2024-03-29T10:35:05Z
https://jurnal.ugm.ac.id/index/oai
oai:jurnal.ugm.ac.id:article/641
2016-06-06T01:39:21Z
mft:ART
oai:jurnal.ugm.ac.id:article/645
2012-12-28T07:46:30Z
mft:ART
0216-7565
dc
Pengaruh Sudut Vertikal Terhadap Hasil Ukuran Jarak dan Beda Tinggi Metode Trigonometris Menggunakan Total Station Nikon DTM 352
Parseno, Parseno
Yulaikhah, Yulaikhah
The measurement of heigh differences using trigonometric technique, and Total Station Nikon
DTM 352 is used.It is identified that the use of different vertical angle will produce different
heights for the same point. It is interesting to analyse further that, the errors of distance and
height differences in trigonometric technique are as the function of vertical angle. This research
tries to investigate the phenomenom mentioned above: is there sistimatical error? and how to
corect them ?
This research is initially arranged to include some steps: (1) preparation of instruments, (2)
measurement of distance and height differences in study area using spirit levelling and
trigonometric levelling, (3) Data processing including correction of differences in height
modelling. Evaluation was carried out by comparing both data of observed height differences.
Based on the result of the statistical test, it is found that the variety of vertical angles do not
affect the computed distance and height differences using Total Station. From the data exercises
resulted that the accuracy of height differences is affected by distance and vertical angle,
however for the distance up to 800 m, the improvement is not signifcant. In addition the field
observations also show that the distance greater than 50m , the contribution of the accuracy of
angle to the change of the accuracy of height differences is greater than the contribution of the
accuracy of the distances.
Keywords: height differences,trigonometric levelling, trigonometric technique, Total Station.
Faculty of Engineering, Universitas Gadjah Mada
2012-07-27 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/645
Forum Teknik; Vol 33, No 3 (2010)
eng
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oai:jurnal.ugm.ac.id:article/646
2012-12-28T07:46:30Z
mft:ART
0216-7565
dc
Zoning Regulation as Land Use Control Instrument: Lesson Learned from United States of America and Singapore
Korlena, Korlena
Djunaedi, Achmad
Probosubanu, Leksono
Ismail, Nurhasan
One of local government authorities is the implementation of land use planning. Due to implementation land use planning, controlling is needed as effort for the implementation is appropriate with the planning. According to Spatial Planning Act No.26/2007, land use control instruments are zoning regulation, permit, incentive and disincentive, and sanction. In Indonesia, zoning regulation is new instrument and only a few of city that have made and uses zoning regulation as land use control instrument. Local government has to create zoning regulation and uses it to control land use in their area. Comparative study is needed to learn from other countries that use zoning regulation as land use control instrument successful.
United State of America and Singapore are relevant as cases study because of their success in using of zoning regulation. This study used a descriptive approach with literature sources. The results show that: (1) there is similarity between United State of America (USA) and Singapore in success using zoning regulation as instrument of land use control; (2) There is different type of land use control system. Most of cities in USA, except Houston City, use regulatory system. In
this system, decision for a land use application is only based on zoning regulation. While Singapore uses discretionary system, the owner’s right to develop is controlled, not only by a zoning regulation, but also by a planning authority’s discretion.
Keywords: zoning regulation, land use control, regulatory system, discretionary system
Faculty of Engineering, Universitas Gadjah Mada
2012-07-27 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/646
Forum Teknik; Vol 33, No 3 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/648
2012-12-28T07:46:30Z
mft:ART
0216-7565
dc
Evaluasi Nilai Noise Sebelum Dan Sesudah Kalibrasi Sebagai Salah Satu Wujud Kinerja Pesawat CT-Scan
Nino Kurniawan, Andrey Nino Kurniawan
Soesanti, Indah Soesanti
The noise has to be measured daily because it directly degrades image quality, which in
turn it is dificult to define between normal and pathological tissues on a-CT image. This
research’s aim was performed to examine noise differences between before and after
calibrating of the CT-scanner system, and also to study the chance of noise deviated values day-
by-day during 20 days of the two different periods of measurement.
A callibrated head water phantom was scanned before and after equipment callibrations,
using the head scanning parameter, and device measurement at ROI 228.2 mm2 to obtain the
noise data. Descriptive statistics was employed to present related information, and the T-test
paired-sample was the statistical tool to test the null hypothese (Ho) with level of significance
(α) 0.05.
The results showed most of noise values between before and after equipment calibrations
fall arround the base line or within two standard deviation (2SD). In before callibration of the
noise, the base line noise value is 4.76 HU whereas the upper limit and the lower limmit of the
noise values are 5.34 HU and 4.18 HU (respectively) with a-1.16 HU difference. In after
callibration of the noise, the base line noise value is 4.35 HU whereas the upper limit and the
lower limmit of the noise values are 5.29 HU and 3.41 HU with a-1.87 HU difference. However,
there are two out of fourty noise values (± 5%) that fall outside of the 2SD limmit if a number
falls outside of 2SD from the base line in the same direction (i.e., all high or all low) more than
four days in a row, it is a shift that could be due to a machine malfunction and should be
investigated before the outer control limit is exceeded. Statistical analyses with paired- sample
T-test showed p-value (0.005) < 0.05. By this meaning that, the noise between before and after
CT-Scanner callibrations are different in their values additonally most of the noise values after
callibration seem to be low compared with that of the values before callibrations.
Keywords: CT scan, evaluation, noise.
Faculty of Engineering, Universitas Gadjah Mada
2012-07-27 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/648
Forum Teknik; Vol 33, No 3 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/649
2012-12-28T07:46:30Z
mft:ART
0216-7565
dc
Pengaruh Parameter Number Of Excitation (NEX) Terhadap SNR
Rochmayanti, Dwi
Sri Widodo, Thomas
Soesanti, Indah
This research aims to observe the influence of Number of Excitation (NEX) to both
parameters the Signal to Noise Ratio (SNR) and the scanning time when performing the MR
neck . Some MR scan parameters (TR, TE, FOV, slice thickness, matrix, flip angle and
bandwidth) are strictly under controlled. All SNR data, due to the 6 NEX variations (NEX 1 to
NEX 6), are required by comparing the ROI’s intensity between the noise background and the
areas of corpus and spinal cord on the images. The scan times are also recorded for each of the
NEX variations being observed. In conclusion, increasing NEX values will simultaneously rise
the SNR and the scanning time.
Keywords : NEX, SNR, Image MRI, Scan time
Faculty of Engineering, Universitas Gadjah Mada
2012-07-27 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/649
Forum Teknik; Vol 33, No 3 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/651
2012-12-28T07:46:30Z
mft:ART
0216-7565
dc
Rancang Bangun Sistem Pengukur Curah Hujan Jarak-Jauh Real Time Sebagai Peringatan Banjir Lahar Dingin
Sunarno, Sunarno
The aim of this research is to set up a sufficient system, which is used for real-time rain
gauge telemonitoring as the early warning system for cold lava avalanche of Mount Merapi.
The system contains a remote station (transducer, Counter Timer, CPM Frequency Converter,
FSK Modulator, and Tx/Rx) and a controller station (Tx/Rx, FSK demodulator, and personal
computer).
Data managements which are developed in this research are expected to be used in a real
time a rain gauge telemonitoring of Mount Merapi. The characteristics of data communication
in this system are unguided type with air as the media, asynchronous serial mode, simplex mode
transmission, with audio modulation and frequency shift keying modulation. A pair of handy-
transceiver was use in data transmitting with VHF/UHF wave at Amateur Radio Data
Frequency (144,100 MHz and 431,125 MHz). Rainfall data changes 60 ml in 10 seconds was
sent with the variation of sound frequency, started at 645 Hz with delay time 0.0168 seconds up
to 2.993 Hz with delay time 0,0015 seconds.
This research is expected to give valuable information for the telemonitoring system
engineering development, especially for engineers who work in the field of telemonitoring
system and for the people who live in the Mount Merapi surrounding
Keywords: telemonitoring, rain gauge, FSK, modulation
Faculty of Engineering, Universitas Gadjah Mada
2012-07-27 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/651
Forum Teknik; Vol 33, No 3 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/652
2012-12-28T07:46:30Z
mft:ART
0216-7565
dc
Analisis Pengaruh Proses Brazing Kuningan Terhadap Perubahan Sifat Mekanis dari Pipa Baja Karbon Rendah
Mardiana, Mardiana
Karmiadji, Djoko W.
Low carbon steel has suitable physical properties such as: easily to be casted, welded and
machined. Generally, this steel is used for construction, hospital and house hold equipment, and
so on. Some equipment structures employ low carbon steel pipe for basic construction, in which
a lot of brazing joins are applied for connecting each pipe to form a house hold or hospital
equipment. This research analyzes the brazing methode, since it is commonly used to obtain
smoother joint surface compared with the other method and having lower melting temperature
than the pipe. The analysis emphasizes the transformation of mechanical characteristics such
as: tensile strength, hardness, micro and macro structures. The result of this research shows
that the maximum tensile strength is 509 N/mm2 when the welded groove is 0,5 mm, or 2,35%
greater than welded metal strength, and 12,5% less than base metal strength. The hardness
values are decreasing compared with the base metal, i.e., 18,5% of average, 18,57% at HAZ
(Heat Afffected Zone), and 19,81% of pipe metal under the value of base metal.
Kata kunci: Brazing, pipa baja karbon rendah, sifat mekanis
Faculty of Engineering, Universitas Gadjah Mada
2012-07-27 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/652
Forum Teknik; Vol 33, No 3 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/653
2012-12-28T07:46:30Z
mft:ART
0216-7565
dc
Karakteristik Menara Pendingin dengan Bahan Isian Ijuk
Johanes, Susanto
In this study the characteristic of a water cooling tower by using the palm fibre as the
packing material have been investigated experimentally. The experiments were carried out in a
rectangle glass tower of 81 cm2 cross sectional area and 100 cm height. The packing used was
constructed of 8 palm-fibre ropes (of about 0,6 cm diameter), zigzag vertically placed above the
stainless steel support on the tower bottom. Its type has 28,3.10-4 kg weighs of rope every m3
volume of the packing.
The experimental results show that the increasing of the water inlet temperature and the
packing height cause the increasing of the tower characteristic. Mean while, the increasing of
the water/air mass flow rate ratio causes the decreasing of the tower characteristic. The tower
characteristic is as a function of the investigated variables which expressed as:
NTU = 3,35.10-3 (m w /m a )-0,995 (Z)0,5050 (T wi )1,1643
with the relative error of 5,5%.
This equation is valid for the range of variables, as m w /m a which is ranged from 4,46 to
9,48, Z which is ranged from 30 to 90 cm, T wi which is ranged from 50 to 60 oC. The mean
effectiveness of the heat transfer were calculated to be 25,9%.
Keywords: Cooling tower, characteristic, effectiveness, palm-fibre ropes.
Faculty of Engineering, Universitas Gadjah Mada
2012-07-27 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/653
Forum Teknik; Vol 33, No 3 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/654
2021-02-15T08:18:41Z
mft:ART
0216-7565
dc
Nilai Kosmologi pada Tata Spasial Permukiman Desa Kapencar, Lereng Gunung Sindoro, Wonosobo
Rejeki, VG Sri
Jurusan Arsitektur FAD Unika Soegijapranata, Jl Pawiyatan Luhur VI/1, Semarang
Soewarno, Nindyo
Dosen Jurusan Arsitektur dan Perencanaan FT UGM,Jl Grafika no 2 Yogyakarta
Sudaryono, Sudaryono
Dosen Jurusan Arsitektur dan Perencanaan FT UGM,Jl Grafika no 2 Yogyakarta
Subroto, T. Yoyok Wahyu
Dosen Jurusan Arsitektur dan Perencanaan FT UGM,Jl Grafika no 2 Yogyakarta
The Kapencar Village, as one of villages on the slope of Sumbing Mountain, has
cosmological concept of spatial setting. The phenomenological research, was done by the
researcher as own instrument, explored for finding the spatial cosmological value in the
Kapencar villages. Some results of the research are:1) The Kapencar Village as the Glondong
vilage, expresed the mon-copat concept, with the Kapencar village as the centre. 2) keblat
wetan as a cosmological concept. Wetan orientation as a symbol of the start of living or the
very previous time of people living. Two cosmological concepts of spatial setting expresed the
Kapencar Village has the grand cosmologycal concept in people lining, there is keblat papat
kalimo pancer (four orientations and the centre as the fifth oerintation).
Kata kunci : Cosmology; the slope of the mountain settlement; spatial setting
Faculty of Engineering, Universitas Gadjah Mada
2012-07-27 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/654
Forum Teknik; Vol 33, No 3 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/682
2012-08-14T01:50:03Z
mft:ART
"100501 2010 eng "
0216-7565
dc
Ektraksi Ciri Citra Termogram Payudara Berbasis Dimensi Fraktal
Nurhayati, Oky Dwi
Widodo, Thomas Sri
Susanto, Adhi
Tjokronagoro, Maesadji
Abstract
The primary purpose of infrared thermography is the locating of thermal differences and anomalies. Infrared thermography can detect numerous conditions in which an anomaly is characterized by an increase or decrease in surface temperature. In this research, we specifically applied calculation of fractal dimension method to a total of20 thermograms of normal breasts as well as of those in advanced breast cancer. In addition standard image pre-processing were also used to enhance the detection capabilitity. Severalmethods in image processing which are pre-processing with canny edge detection, thresholding, calculation of fractal dimension use box-counting and Hausdorff dimension.
The results of this research are shown that Hausdorff dimension in the normal thermogramshave range value 0,4 – 0,95 smaller than the advanced thermograms which have value more than 1,26.
Finally this results show that the difference of fractal dimension can be used todistinguish between normal and advanced thermograms.
Keywords: canny edge detection, thresholding, fractal dimension, box-counting, Hausdorff
Faculty of Engineering, Universitas Gadjah Mada
2012-08-03 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/682
Forum Teknik; Vol 33, No 2 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/716
2012-08-14T01:50:03Z
mft:ART
"100501 2010 eng "
0216-7565
dc
Pengaruh Pewarnaan Beton Cetak Pada Dinding Serap Sebagai Selubung Bangunan Tinggi
Anambyah, Slamet
Setyowati, Endang
Abstrak
The use of exterior building materials will indirectly affect the room temperature. Planners are expected to choose the type of building materials in accordance with the climate andbuilding conditions to produce good quality buildings. One alternative is to use absorbing wall as a building envelope. Absorbing wall is a kind of wall made of concrete plate with a certain thickness (in the study used a thick wall as 10 cm) that could reduce heat to not cause thermal effects on the environment and on the exterior of the building (Frick, 1998). To support the appearance and aesthetics of the building the walls absorb has coloured. Coloring the wall will affect the absorben surface of the wall to ward heat and indirectly affect the room temperature.Besides, the wall thickness and duration of heating also influence.
The research method used was an experiment in the laboratory. Observations were madeby measuring temperature in the room which is divided into four stages of observation, of eachwithin 1.5 hours, six hours and one hour.
The results showed that the walls absorb the color produced in the room temperature is higher than the outer space with a difference in temperature between 2-60 Celsius. This is due partly because the space is measured is a sealed space, no change of air in the morning and night, so hot that occurred during the day generated by the exterior wall confined in the building. According to the standard of comfort at room temperature, the use of absorbtive wallcolor in these experiments included in the category uncomfortable.
Keywords: absorbing wall color, building temperature, heat confined
Faculty of Engineering, Universitas Gadjah Mada
2012-08-03 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/716
Forum Teknik; Vol 33, No 2 (2010)
eng
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oai:jurnal.ugm.ac.id:article/1047
2012-08-14T02:10:22Z
mft:ART
"100501 2010 eng "
0216-7565
dc
Pengaruh Functionality Terhadap Kesuksesan Produk
Trapsilawati, Fitri
., Subagyo
Abstract
This study was done for analyzing relation between product functionality and success of a product. Product functionality data of 58 different products were used in this study. The data of products were taken from different types of industry, i.e.: automotive, telecommunication, electronic and service. The result showed that the relation between product functionality and
success of a product tends to form “must-be” type of Kano diagram. Therefore, in designing a product, producers should not add more “value” in functionality.
Keywords: functionality, Kano diagram, success of a product.
Faculty of Engineering, Universitas Gadjah Mada
2012-08-03 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1047
Forum Teknik; Vol 33, No 2 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1048
2012-09-21T07:21:23Z
mft:ART
"100501 2010 eng "
0216-7565
dc
Perancangan Aplikasi Sistem Seminar Online Berbasis Internet
Mingsep, M
Nugroho, Lukito E
Istiyanto, Jazi E
Hidayat, Risanuri
Abstract
Online seminar system is a real time communication application service used to organizes scientific conference in Internet. The online seminar system application can support text communication, face-to-face communication, dialogue-based communication, and sharing seminar material presentation. The design of the online seminar system application program consists of three parts, which are a server application program, a moderator application program and a client application program.
The importance of the real time communication in organizing online seminar system is its capality to create virtual environment (Internet) as a replication of real world communication, because it supports text communication, file presentation, face-to-face communication and
direct dialogue between participants. The face-to-face communication and direct dialogue can create a dynamic interaction environment, because participants can interact face-to-face, directly talk to each other, obtain feedback, present physical reaction of other participants, and chatting using text communication. It become a solution to the problem of distance and time for meeting activities of two or more individuals using internet.
The result of the research is a class diagram design that contains group functions and rules/processes necessary in communication. The classes formed in the class diagram design are directly used as object classes at implementation level in the form of online seminar application program code.
Keywords: Online seminar system, Real time communication, video conference application design.
Faculty of Engineering, Universitas Gadjah Mada
2012-08-03 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1048
Forum Teknik; Vol 33, No 2 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1049
2012-08-14T02:48:49Z
mft:ART
"100501 2010 eng "
0216-7565
dc
Analisis Komputasi pada Segmentasi Citra Medis Adaptif Berbasis Logika Fuzzy Teroptimasi
Soesanti, Indah
Susanto, Adhi
Widodo, Thomas Sri
Tjokronegoro, Maesadji
Abstract
The objective of this research is to analyze the computation of medical image adaptive segmentation based on optimized fuzzy logic. The success of the image analysis system depends on the quality of the segmentation. The image segmentation is separating the image into regions that are meaningful for a given purpose. In this research, the Fuzzy C-Means (FCM) algorithm with spatial information is presented to segment Magnetic Resonance Imaging (MRI) medical images. The FCM clustering utilizes the distance between pixels and cluster centers in the spectral domain to compute the membership function. The pixels of an object in image are highly correlated, and this spatial information is an important characteristic that can be used to aid their labeling. This scheme greatly reduces the effect of noise. The FCM method successfully classifies the brain MRI images into five clusters. This technique is therefore a powerful method in computation for noisy image segmentation.
Keywords: computation analysis, MRI Medical image, adaptive image segmentation, fuzzy c-means
Faculty of Engineering, Universitas Gadjah Mada
2012-08-03 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1049
Forum Teknik; Vol 33, No 2 (2010)
eng
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oai:jurnal.ugm.ac.id:article/1050
2012-08-14T03:12:43Z
mft:ART
"100501 2010 eng "
0216-7565
dc
Pengaruh Kompaksi dan Kandungan Grafit Terhadap Karakteristik Mekanis Bantalan Luncur Connecting Rod
Medi, Ali
Karmiadji, Djoko W
Abstract
Bearing is an important component in the automotive industry that is needed to be made of material having good properties. Aluminum graphite matrix composite becomes a selected tribology application in self-lubricating bearing. This composite has good wear resistance and
low density compared with bronze bearing material so that gives more economical values. This research is done by the method of powder metallurgy with aluminum matrix composite material using an additive of 5% graphite weight fraction. Variable compactions (P) are 400 MPa, 500
MPa, 600 MPa and sintering temperature is 5500C, with variable holding times (HT) 1 hour, 2 hours and 3 hours. The study aims to analyze the effect of graphite content affecting the mechanical properties of aluminum graphite composite material. The test results show that the optimum condition of 5% graphite content is the density = 5.11 gr/cm3, the hardness = 54.449 HB, the compressive strength = 790 MPa, when P = 600 MPa and HT = 3 hours.
Keywords: aluminium, komposit, serbuk, kompaksi, holding time.
Faculty of Engineering, Universitas Gadjah Mada
2012-08-03 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1050
Forum Teknik; Vol 33, No 2 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1051
2012-08-14T03:24:29Z
mft:ART
"100501 2010 eng "
0216-7565
dc
Kinetika Adsorpsi Phenol Dalam Air Dengan Arang Tempurung Kelapa
Mulyono, Panut
Kusuma, Wisnu Madha
Abstract
Phenol is a hazardous chemical which usually contained in the wastewater from some industries, such as oil refineries, coal processing, and plastics. Phenol is dangerous substance to a microorganism although in low concentration in wastewater. According to the United State Environmental Protection Agency, the maximum concentration of phenol in wastewater is 1 ppm. This requirement is lower than the concentration of phenol in normal wastewater discharged from industries that is 100 to 1000 ppm. One of the most efficient practical method to remove phenol in waste water is adsorption. Many adsorbent can be used to adsorp phenol from waste water. In this study, coconut shell charcoal is used as the adsorbent. The adsorption kinetics of phenol in aqueous solution was studied by measuring the concentration of remaining phenol in the solution as a function of time (t) with the parameters of operation temperature (T), particle diameter of coconut shell charcoal (d), and mass ratio of coconut shell charcoal to the solution (r). The adsorption rate was found to be increased as the operation temperature and mass ratio increase, but it was decreased as the particle diameter increase. The empirical rate expression for the adsorption of phenol in aqueous solution with coconut shell charcoal has been determined as: 0,438 0,1313 1/2 0 2497,83 ln 1,4832exp C d r t C RT − ⎡ ⎤ − ⎛ ⎞ =− ⎜ ⎟ ⎢ ⎥ ⎝ ⎠ ⎣ ⎦ with the relative mean error of 30.74%. C in this equation is the phenol concentration at time t, C 0 is the concentration at t = 0, and R is the gas constant (8.314 J/mol/K). This equation is valid for the ranges of T of 303 to 333 K, d of 767 to 1879 μm, and r of 0.0476 to 0.1666, and for the adsorption of phenol in aqueous solution with coconut shell charcoal in erlenmeyer agitated by using shaker bath.
Keywords: Adsorption Kinetics, Phenol, Aqueous Solution, Coconut Shell Charcoal
Faculty of Engineering, Universitas Gadjah Mada
2012-08-03 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1051
Forum Teknik; Vol 33, No 2 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1052
2012-08-14T04:13:07Z
mft:ART
"100501 2010 eng "
0216-7565
dc
Perbandingan Metode Rasional Dengan Kreatif Untuk Mendesain Alat Bantu Pasang Lampu
Prakosa, Rudy Firman
Tontowi, Alva Edy
Abstract
This article discusses the result comparison of design process of lamp installation device using rational and creative methods and its usability analysis. The study was conducted through team recruitment, prototype development, prototype selection, and usability testing. The teams
recruited involved creative team (K-team) consisting of experienced technical expert and non-exact students, and rational team (R-Team) consisting of exact students with knowledge in product design method. Result of prototype selection using weighted objectives method showed
that rational prototype produced higher total weight compared to that of creative prototype. Usability testing were also conducted in terms of rational and creative prototype methods. Usability testing involved learnability, error, efficiency of use, and satisfaction. Result of usability testing showed that rational prototype had higher efficiency of use, lower error, and higher satisfaction level. Therefore, rational method becomes better design process in lamp installation device.
Keywords: product design, creative method, rational method, usability, device
Faculty of Engineering, Universitas Gadjah Mada
2012-08-03 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1052
Forum Teknik; Vol 33, No 2 (2010)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1053
2024-03-29T10:35:04Z
mft:ART
"031203 2003 eng "
0216-7565
dc
Provenance Study and Tectonic Implications on Rock Sequences in The Lengguru Fold Belt of Western Papua: Constraints from Zircon Fission Track Thermochronology
Sutriyono, Edy
The present zircon fission track thermochronologt study reveals Triassic to Pliocene source terrains supplying clastic materials into the present successions in western Papua. The provenance of sedimentary rocks in the region appears to have associated with igneous activities, suggesting an episode of tectonic events in Mesozoic and Cenozoic. Importantly, the Pliocene Buru Formation in the Lengguru Fold Belt contains abundant Paleogene volcanic zircons, which might have been derived from erosion of the Weylond Terrane in the latest Miocene-Pliocene. This suggests the Weyland Terrane was part of the Paleogene 'Caroline Arc, that was eroded after Lute Miocene collision with the western Papua microcontinent. The main compressional pulse in the studied area occurred from -12-4 Ma. The deformation in the mountainous belt in western Papua from 4-0 Ma has been dominated by transpression. This transpressional regime continued in the fold belt, but with less convergence. Meanwhile, compression continued in the frontal part of the Lengguru Fold Belt, creating Pleistocene foldingfeatures such as the Buru Anticline, the Umar Anticline, and the Poronggo Anticline in the eastern Lengguru Fold Belt section. At the present day, transpression is occurring along the
Tarera'Aiduna Fault with ongoing uplift of the western Papua Fold Belt. However, extension and subsidence are occurring in the Lengguru Fold Belt southeast of Cendrawasih Bay.
Keywords : sedimentary rocks, zircon fission, transpression
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1053
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1054
2024-03-29T10:35:04Z
mft:ART
"031203 2003 eng "
0216-7565
dc
Unjuk Kerja Reaktor Cuscade Bentuk Kolom
Sulistyo, Hary
Ad'hadi, Merry
Abstract
Some heterogeneous reactions such as liquid-solid, liquid-liquid were undertaken in the stirred tank batch reactor. To change a batch process into flow process, plugflow resctor is the reactor with the similar performance to the batch reactor. However, it would be faced with
problem to attain the plug flow pattern. A cascade of ideally mixed reactor was reactor which has a similar performance u,ilh the plugflow reactor especiallyfor heterogeneous system.
Experinrent was wrdertaken in the column which was divided into three sections. This is similar with the three mixed flow reactors. Sodium chloride was used qs a tracer and water as fluid flow. It was investigated two variables such os stited speed and ratio of impeller diameter to the distance ofthe cascade.
In this paper, Bodenstein number of pipe flow reactor and the number of stages for the cascade were determined experinrentally from the residence time distribution of the tluid. It is shown that the results good agreement with the empirical equation proposed by Pawlowski (1962) and Elgeti (1996).
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1054
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1065
2024-03-29T10:35:04Z
mft:ART
"031203 2003 eng "
0216-7565
dc
Pengaruh Kecepatan Pendinginan Terhadap Perubahan Volume Leburan Polymer Crystalline dan Non-Crystalline
Fahrurrozi, Mohammad
Moristanto, Bagus Senowulung dan
Abstract
The study was directed to develop a method to predict the influence of the rate of cooling to the degree of crystallittitv (DOC) and volume change of crystalline polymers. Crystalline polymer melts exhibit volume shrinkage on cooling below melting point due to crystallization. Crystallization and volunrc shrinkage will proceed with varies rate as long as the temperature is above the glass tansition temperatrre. DOC achieved by polymer is not only determined by the inherent crystallinity of the polymer but also influenced by the rate of cooling. Onfast cooling, inherently crystalline polynrer may have zero DOC. This incompletely crystallized polymer will crystallize and experience volume shrinkages on prolong usage at temperatures above glass transition temperature. A mathematical model and a kinetic model of crystallization based of modification of Avrami equation were solved sintultaneously to give temperature and DOC distributions as ftmctions of time for various rote of cooling. Rate of cooling was varied by changing the water hath ternperalure. Labotatory measurement was done to verifu the predicted temperature profile and average degree of crystallinity. The simulated tenxperature profiles as well as average degree of crystallinities give good agreements with experimental results.
Keywords: polymer, degree of crystallinity, cooling, melting point, crystallization, volume
shrinkage, molding
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1065
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1066
2024-03-29T10:35:04Z
mft:ART
"031203 2003 eng "
0216-7565
dc
Karakterisasi Aliran HilirKipas Aksial sudu Datar Variasi Span Sudu dan Sudut Serang
Waluyo, Joko
S, Sutrisno
Abstract
The velocity field downnstream of an axial fan was measured using probe 55 P 51 of a Hot Wire Anemometer to investigate characteristic of the flow. Flat blades werevaried in length of blade's span and angle of attock. The length of blade's span was varied at 0.3, 0'5, 0.75 and l times of 450 mm, at various angles of attack at 5º, 10º and I5º, while it was operated at constant speed of 610 rpm. The measurement was conducted at vertical distances 210, 360, 510 and 660 mm from the fan.
The investigation was focused on the mean velocity in axial and tangential directions at measurement position 210 mrn. Properties of theflow were computed based on integration of Reynolds momentum and continuity equations for determining flux of axial and angularmomentum. The performance of the axial fan was determined by comparing values of torque, thrust, volume rate and consumed power. The swirling number of the flow was also calculated as a consideration to determine performance of the axial fan.
Results indicate that operating the axial fan in variation blade'sspan have significant effect to the value of axial and tangential mean velocities and the area off low, meanwhile variation in angle of attack just influence to the value of axial and tangential mean velocities. Increasing ofblade's span at constant angle of attack If increases volume rate, torque, and thrust of flow and consumed power oJ'the fan. Investigation of increasing angle of attack at span blade 450 mm also increases those values. Span blade 450 mm at angle of attack l5º have a highest performance and consumed power. It can be shown also that swirling increase with respect to increase of angle of attack.
Keywords: velocityfield downstream axial flowfan, span's blade,angle of attack.
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1066
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1067
2024-03-29T10:35:04Z
mft:ART
"031203 2003 eng "
0216-7565
dc
Characterization of Devcon Plastic Steel Adhesive on Mild Carbon Steel Steel
Malau, Viktor
Hadromi, H
The objective of this research is to characterize mechanical and physical behaviors of adhesives bonding (butt and tap joints) on mild carbon steel. The research used an adhesive material of devcon plastic steel. Mechanical properties are tensile sftength, shear strength and
toughness of the joints.
The major parameters of this research were adherends surface roughness Ra, adhesive thickness, curing time and curing temperature. Surface roughness of the carbon steel adherends are Ra = 0,52 pm, 0,76 pt and I,2l 1m' Adhesive thichtess varyfrom: 0,03 mm to 0,3 mm and curing time: 1, 2, 3, 4 hours at curing temperatures: 55, 70, 85, 100, 120 and 140 oC.
The research has been conducted under static loads at room temperature'
The results of static loads (tensile and shear loads) show that adhesive thiclorcss and odherends surface roughness influence signifcantly the strength and toughness of the joints'
An increase in the adherends surface roughness will increase adhesive strengths. For certain surface roughness, the joints have an optimunt adhesive thiclorcss that produces a strength and toughness maximum. Heat lreatntent of the joints at curing temperature for certain curing time
influences significanlly shear stresses. An increase of curing time will increase shear stresses' At certain surface roughness and curing time (for example: Ra : 0,76 pn and curing time = 4 hours), this research shows that the joints have an optimum curing temperature. Specimens
cured at elevated temperqture show generally the increasing strength, however there is an optimum temperature where cure exceed this temperature the strength begins decrease. idhesives bonding
failure of butt joints are generally cohesive and lap joints have a mixed failure cohesive and adhesiveKeywords: adhesive bonding, mild carbon steel, devcon plastic steel, static load, butt joints.
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1067
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1070
2024-03-29T10:35:04Z
mft:ART
"060102 2006 eng "
0216-7565
dc
Studi Kerusakan Jalan Piyungan - Wonosari dari Aspek Geoteknik
Adi, Agus Darmawan
Some road sections in Yogtakarta sufer from frequent damage following the rainy season. Repairs have been conducted regularly and various efforts to improve the road condition have also been done, however, this probletn always comes every year. Soil condition below the road pavement is suspected to give a major contribution on road damage in this region.
A series of investigation was carried out on the soil beneath the road of Piyungan-Wonosari section. Field observation on road damage condition was conducted and it was followed by in situ tests, consisting of hand boring, sampling and cone penetration test. Properties of soil were obtained from several laboratory tests. To simulate effect of water changes on soil strength, a series of shear strength tests were performed on the samples made of soil with various water contents.
The results indicate that the road damages in this region are resulted by several reasons. At road section built on slope, the damage was mainly caused by downward movement of the Jill which was not rnassive enough standing on the original slope. Soil softening due to water changes is identified to give a major contribution on this problem, especially for road constructed on clays. Expansive soil was also found at some road section. This soil type produces signiJicant amount of pressure and volume changes which lead to movement of the adjacent structures.
Keywords : road-damage, soil, strength, water, soften
Faculty of Engineering, Universitas Gadjah Mada
2012-09-20 08:45:20
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1070
Forum Teknik; Vol 30, No 1 (2006)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1071
2024-03-29T10:35:04Z
mft:ART
"040102 2004 eng "
0216-7565
dc
Karakteristik Pasang Surut Laut di Pulau Jawa
Haryono, H
Narni, Sri
Sea tides are cailsed by atlraction of heavenly bodies especially moon and sun to the envelope of sea water of lhe earth. At different places of the earth, sea tides characteristics are different.
Sea tides raw data collected from several sea tides stations in Java island are processed using sea tides computer software and amplitudes of sea tidal constants are determined. Based on Formzal formula,
Formzal numbers are calculated, and sea tides characteristics are
interpreted. Linking lhe sea tides characteristic infurnntion to the digital map of Java island, sea tides characleristics map is discovered.
The result of the research is information on sea tides charateristics
for Jova island. Normally, mixed sea lides characteristics are discovered in Java island. Many users, e.g. hydrographic surveyors, fishermen, coaslal engineers, elc. need sea tides characteristics information for their works.
Keywords: sea lides, Formzal nurnbers, Java island.
Faculty of Engineering, Universitas Gadjah Mada
2012-09-21 10:30:18
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1071
Forum Teknik; Vol 28, No 1 (2004)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1073
2024-03-29T10:35:04Z
mft:ART
"060102 2006 eng "
0216-7565
dc
Penentuan Daerah Rawan Kebakaran dengan Sistem Informasi Geografik (Kasus Pooncarie Region, New South Wales, Australia)
Muryamto, Rochmad
The research was done to produce o map showing areas of a high bushfire risk and to create a statistic table shov'ing,.for each properfy, the totsl area with a high bushfire risk and proportion ofthe high bushfire risk area lo the total area ofthe property.
The research was carried out in Pooncarie region, south western New South Wales Australia, which is best described as an area of semiarid rangeland. GIS (Geographic Information Systems) spatiul analysis was conducted usingfour coverages: Iand system, roads, bores, and property, including their coruesponding attribute data. Bffiring technique and overlay operations for spatial analysis were done using Arcllnfo GIS sofrware based on some determined criteria, yielding a map showing areas of a high bushfire risk.
Five properties had the highest proportion of their land being identified as with a high bushfire risk.
Keywords: bushfire, geographic information ststenn, buffering, spatia\ analysis.
Faculty of Engineering, Universitas Gadjah Mada
2012-09-21 10:30:18
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1073
Forum Teknik; Vol 28, No 1 (2004)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1074
2024-03-29T10:35:04Z
mft:ART
0216-7565
dc
Aplikasi Packet Diffusion Model untuk Menganalisis Pengaruh Fenomena Micromixing terhadap Jalannya Reaksi Kimia Paralel di dalam Reaktor Tangki reraduk Kontinyu dengan Aliran Umpan Terpisah
Altway, Ali
Winardi, Sugeng
Rachimoellah, M
The effect of turbulent mixing on the course of two fast parallel competitive chemical reactions (netralization of sodium biborate snd iodide-iodate oxidation-reduction reactions) carried out in continuous stiwed tank reaktors have been studied theoretically, using Packet
Diffusion Model, and experimentally to validate the theoretical predictions.
System studied consists of flat bottom cylindrical tank 0.2 m in diameter. The height of liquid in the tank is also 0.2 m. The tank was equipped with Fan Turbine with diameter equal to I/3 tank diameter. Sulphuric acid solution (0.5 Il,Q was fed into the tank through 2 mm-diameter pipe, and the aquous solution containing 0.0909 M NaH2Boj, 0.0909 M H:Bo:, 0.0116667 M KI, and 0.0023333 M KIO3wasfed into the tank through I0 mm-diameter pipe. The rate of acid solution was varied 0,045, 0.068, and 0.09 liter/minute, while the rate of the other solution was varied I, 1.5, and 2 liter/minute (the rate variation coruespond to the mean residence time variation of 6, 4, and 3 minutes). The impeller rotation speedwas varied; 9,12, and I5 rps. The iodine concenftation in the tank influent was analyzed using spectrophotometer.
The simulation works conclude that the selectivity of iodine decrease with increasing impeller rototion speed for the mean residence time of 3 and 4 minutes, while for the mean residence time of 6 minutes, the iodine selectivity increase with increasing impeller rotation speed. Increasing the mean residence time from 3 to 4 minutes will decrease the iodine selectivity, while increasing the mean residence time further to 6 minutes will increase the selectivity. The theoretical prediction using Packet Difusion Model agree fairly well with the experimental data. The experimental studies also showed that the feed position in the region of high turbulent intensity (impeller region) give lower iodine selectivity compaired to the selectivity in the region of lower turbulent intensity. The Packet Dffision Model cannot simulate the effect offeed position on the iodine selectivity.
Keywords: Packet Diffusion Model, Micromixing, and Continuous Stirred Tank Reactor
Faculty of Engineering, Universitas Gadjah Mada
2012-09-21 11:15:06
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1074
Forum Teknik; Vol 28, No 2 (2004)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1075
2024-03-29T10:35:04Z
mft:ART
"031201 2003 eng "
0216-7565
dc
Optimasi Kinerja Pompa Sentrifugal Produk Lokal dengan Modifikasi Impeler dan Analisis visualisasi Aliran
Siswantoro, Soeadgihardo
Sutrisno, S
A preliminary efort to inrprove an impeller design for domestic centrifugal pump with 165 mm outlet diameter, semi open impeller has been initiated implementing flow
visualization method. The study was focused on several impellers having different inlet and outlet angles, each of them has the same blade thickness.
A facitity has been constructed to measure the performance
for those impellers at similar speed, 200b rpm. The visualization technique applied in the study was wet paint method applying point on the surface of the impellers with several layers of dffirent colors and wetness.
Impellers hwing optimum inlet ond outlet angles have been identified.
Keywords : impeller, flow visualization
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1075
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1077
2024-03-29T10:35:04Z
mft:ART
"031201 2003 eng "
0216-7565
dc
Penyusunan Model Konsepsual Basisdata untukSistemlnformasiKadasterMultiguna
Muryamto, Rochmad
The term of nrultipurpose
cadastre
is used to describe a system that is designed to record'
store, and provide not only landlenure
and land valuation idormation but also a wide variety
of information
that ,o, u,u
f*rtionally
related to and referenced by property parcels' It means
that multipurpose no,t oniy ,eceiues information
and data
from
many sources' but it also
provides services
and products
for
many purposes and users' The research is directed to design
a conceptual
model oi mltipuipose cadastre
database for
developing its information
system'
The conceptual
model was developed
using entity relationship diagram and represented in
relational database structure.
A model of multipurpose cadastre,was
also developed using some
parcel based data that came
fronr
many ,)ur)rr. The model was situated in Kelurahon
Tahunan, Yogtakarta'
An information
system of multipurpose cadastre based on the conceptual
design can be
developed
and it provided nol onlyiudicial andfiscal information'
but also semices information
such as water, telephone,
and electricity. In addition, some
problems occurred in building the
model were also discussed'
Keywords: multipurpose cadastre' conceptual
design
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1077
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:ojs.175.111.88.38:article/1078
2012-09-26T13:44:25Z
mft:ART
oai:jurnal.ugm.ac.id:article/1079
2024-03-29T10:35:04Z
mft:ART
"031201 2003 eng "
0216-7565
dc
Model Pemilihan Angkutan Sekolah : Studi Kasus Kawasan Kotabaru, Yogyakarta
Haryo I, Antonius
)
Alumni Jurusan Teknik Sipil Fakultas Teknik UGM
Sigit Priyanto
Jurusan Teknik Sipil & Magister Sistem dan Teknik Transportasi UGM
Abstract
With it's title as a city of student, Yogtakarta has a large amount of students which is
around 105,684 students, Iiving in Yogtakarta city. Therefore, it was concluded that trafic in
Yogtakarta could be much influenced by students. The intention of this research is to
understand the characteristics of students traveling with private cars, and if they are offered
public transportation and they choose it. Therefore the congestion can be reduced.
The stated preference method is applied to this study to investigate the response of private
car passengers to shift in public transportation in school troveling.
The results showe that if the public transport is available they may be choose it rather than
private cars.
Keywords: public transport, private car, school traveling
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1079
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1080
2024-03-29T10:35:04Z
mft:ART
"031201 2003 eng "
0216-7565
dc
Karakteristik Arus Lalulintas Sekolah, (Studi Kasus: Kawasan Kota Baru, yogyakarta)
Lipantoro, Banu
Alumni Jurusan Teknik Sipil Fakultas Teknik UGM
Sigit Priyanto
Jurusan Teknik Sipil & Magister Sistem dan Teknik Transportasi Fakultas Teknik UGM
Abstroct
The increase of demand in transportfor school octivities contriibutes inflow characteristics.
The regulation of school entrance time begins at the same time, which is about at 07.00, causes
the surrounding streets experience an increased in trffic
flow.
Therefore, the study is to
illustrate the influence of schools activities in traffic characteristics.
Observation were conducted on streets in Kota Baru area, which is known as school-buildings area. The streets being observed were Jl. Cik Ditiro, Jt. C. Simanjuntak, JI. Sudirman,
and Jl. Suroto. It was considered based on the result on recent study that these streets were
highly inJluenced by school activities.
Findings
from
this research showed that school activities had influenced an (nerage
contribution to sunounding streets up to 43%. Further, because of such high contribution,
street experience a lower oflevel ofservice.
Pendahuluan
Lalulintas yang ada dewasa ini membutuhkan
perhatian lebih mengingat semakin tingginya
beban dan tingkat pengeluaran untuk pemecahan
permasalahannya. Salah satu permasalahan yang
muncul dan cukup mengganggu khususnya di
Yogyakarta adalah arus bangkitan di pagi hari
akibat aktivitas sekolah. Regulasi pemerintah
mengenai waktu masuk sekolah yang sama
mengakibatkan membengkaknya beban aliran
lalulintas dijaringan jalan,
terutama jaringan jalan
yang cenderung menjadi rute untuk siswa sekolah.
Kemacetan berkaitan erat dengan volume,
kecepatan dan kepadatan yang selanjutnya pada
penelitian ini akan dijadikan sebagai parameter
untuk mengetahui seberapa besar pengaruh
aktivitas sekolah terhadap aliran lalulintas pada
ruas jalan yang terpengaruh langsung. Arus jam
puncak yang terjadi di Yogyakarra diidentifikasi
pada umumnya terjadi pada waktu-waktu tertentu,
antara lain: saat pegawai masuk kantor, saat
pelajar masuk
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1080
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1081
2024-03-29T10:35:04Z
mft:ART
"031201 2003 eng "
0216-7565
dc
SIFAT-SIFAT GEOTEKNIK BAHAN TIMBUNAN INTI KEDAP AIR BENDUNGAN BATUTEGI
Djarwadi, Didiek
Soil was already widely used as watertight materials in the embankment dam engineering, where as, the selection and treatment (compaction) will in/Iuenced the geotechnical properties.
As a water tight material the soil used should be impermeable for controlling seepage and hwe efficient shear strength for controlling stability.
The aim of this research was to analyze the soil laboratory test results of core embanlcrnent
materials obtained during the soil investigation and the construction stages of the Batutegi dam,
a 125 meter in height of earth-rockfill dam in Lampung, Indonesia. The research analyzed the
geotechnical parameters and the intercelations of the geotechnical parameters in order to indicate the geotechnical properties of the core embankment materials. The evaluation of the geotechnical parameters from the soil laboratory tests indicated that in term of density, permes-bility, swelling characteristic, compressibility as well as the strength, the core moterials used at Batutegi dam meets the requirement as watertight materials in the embankment dam engineering.
Keywords: geotechnical properties, embankment dam, water tight materials.
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1081
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1082
2024-03-29T10:35:04Z
mft:ART
"031201 2003 eng "
0216-7565
dc
Pengamanan Tebing Pantai Tanjung Playu Batam
Yuwono, Nur
Saputra, Muhammad Effendi
Yuwono, Y
Tanjung Playu Beach, Batam Island, is a wonderfull fishermen village. The housing and public facilities are built a long the coast. These buildings and facilities are subject to wave attack, especially during wave season and high tides. In order to combat this problem, a special research is carried out.
This research is intended to analyze the problem and to find out the solution through the hydraulic model test. Based on this research, the design of sea wall is carried out in order to gct a building which environmentalyfriendly.
Keywords: wave attack, hydraulic model test, sea wall.
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1082
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:ojs.175.111.88.38:article/1083
2012-09-25T13:59:09Z
mft:ART
oai:jurnal.ugm.ac.id:article/1084
2024-03-29T10:35:04Z
mft:ART
"040501 2004 eng "
0216-7565
dc
Pengembangan Auto CAD dengan vB untuk Desain Pola Coran dan Cetakan Produk Pulley Standar Tipe Taper Lock
Herliansyah, Muhammad Kusumawan
dan Adi Nugroho
Jl. Grafika No. 2, Kampus UGM, Yogtakarta 55281
Abstract
This paper presents the development of automatic casting design system
for
Taperlock
pulley type. This system is intended to assist casting designer in pattern design, to reduce design
time, and to minimize error in transfering product design data into pattern design.
The input of this system is data base of taper lock pulley's catalogue in mdb
format,
while
the output is design of the pattern drawing in 2D and 3D solid. Moreover to generate pattern
design is around 59 second.
Keywords: casting, pattern, automat ic.
l.
Faculty of Engineering, Universitas Gadjah Mada
2012-09-21 11:15:06
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1084
Forum Teknik; Vol 28, No 2 (2004)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1085
2024-03-29T10:35:04Z
mft:ART
"040501 2004 eng "
0216-7565
dc
Pengaruh Pengoperasian Reaktor Kartini terhadapKadar DO, BOD, dan COD Air Pendingin primer
Wijatna, Agus Budhie
Affiliation—Country—Bio Statement Principal contact for editorial correspondence. NameTri Wulan Tjiptono Affiliation—Country—Bio StatementPusat Penelitian dan Pengembangan Teknologi Maju - BATAN, Yogyakarta NameTony Dwi Susanto Affiliation—Country—Bio StatementFakultas Teknik Industri, UPN Veteran, YogyakartaTitle and AbstractTitle Abstract
In light water reaclor (LWR) systems, water coolant passes through reactor core to remove heat generated by fission processes. Therefore, the temperature of water coolant raise and thewater coolant is irradialed by neutrons from reactor core.
The research was directed to explorethe influences of both of them to the contents of Dissolved Oxygen (DO), Biological OrygenDentand (BOD) and Chemical Oxygen Demand (COD).The research wss done by chemical titration method to measure the content of DO, BOD5,and COD in the water coolant in which the reactor was operated at critical condition andconstant power. water samplingwere done after 45',90', l3s', IB0',225', and 270', reactoroperation.
The results of this research are: (1) the temperature of the coolant is increasing asoperating time function, (2) the content of DO is also increasing, while BOD5 and COD tends tobe constant, and (3)in general the reactor water coolant is safe to be released to the environment.
Keywords: water coolant, heat, irradiation, chemical titration, DO
Faculty of Engineering, Universitas Gadjah Mada
2012-09-21 11:15:06
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1085
Forum Teknik; Vol 28, No 2 (2004)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1086
2024-03-29T10:35:04Z
mft:ART
"031201 2003 eng "
0216-7565
dc
Pemanfaatan Sistem Informasi Geografik untuk Penentuan Bank Tempat Pembayaran Pajak Bumi dan Bangunan Pelaksana Payment Online System
Sardana, S
Muryamto, Rochmad
The research aims to do the spatial analysis in selecting banks for paying land and building tax (Tp banps) which will be nominated as POS banlrs (Payment Online System) banks in Bandung city by applying GIS (Geographic Information Systems) technology.
GIS spafial analysis was conducted using three coverages; administrative boundaries of Bandung city, land use, and distibution of TP banlcs, including their corresponding attribute data. verything technique and overlay operations using Arc/Info GIS software were conducted to select the priority of TP banks based on some determined criteria.
Nineteen Tp banks were nominated as POS, eight of them were considered as the major priority where their locations are equally distributed in Bandung city.
Keywords: tax, geographic information systems, spatial analysis
Faculty of Engineering, Universitas Gadjah Mada
2012-09-11 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1086
Forum Teknik; Vol 27, No 2&3 (2003)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1096
2017-10-27T00:29:04Z
mft:ART
oai:jurnal.ugm.ac.id:article/1097
2024-03-29T10:35:04Z
mft:ART
"050102 2005 eng "
0216-7565
dc
Koefisien Perpindahan Massa pada Ekstraksi Aspal Buton dari Kabungka dan Bau-Bau dengan Pelarut n-Heksan
Purwono, Suryo
Murachman, Bardi
Tri Yulianti, Dyah
Suwati, dan
Butonion natural asphalt can be used for binder in road construction after its impurities were removed by extraction using suitable solvent. Researches on extraction of Butonion asphalt have been done. However, most of them are explorative research.
This experiment tried to find mass transfer coeficient for Butonion asphalt extraction. The mass tronsfer coefficient will be used in extraction tower design. In this experiment, multi-stage cross-cwrent extraction was used using n-hexane as a solvent. The number of stages was seven. Bitumen obtained was then distilled to separate the n-hexane. The operation variables were : size of solid, rotation and extTaction time.
The relationship of the mass transfer coefficient with other variables can be written as:
The constant values of Kabungka asphalt are : K=6.43558x10tt, a=0.141569, b=0.2825804, c =1.76857, d= - 1.381755, e=t.636537x102 ; those of Bau-Bau asphalt are : K= 6.3x I0tt'a = 0.0891, b= 0.28258, c= L7699, d = -1.3821
Keywords : extraction, mass transfer, Butonion asphalt
Faculty of Engineering, Universitas Gadjah Mada
2012-09-27 18:41:44
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1097
Forum Teknik; Vol 29, No 1 (2005)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1098
2024-03-29T10:35:04Z
mft:ART
"050102 2005 eng "
0216-7565
dc
Evaluasi terhadap Waktu Tunggu dan Jarak Berjalan Penumpang pada Perpindahan Moda di Stasiun Lempuyangan Yogyakarta
Wiarco, Yuwono
Malkhamah, Siti
Lempuyangan Railway Station is located in Jogjakarta. To get to or to leave the station passengers using the railway services take other modes, such as becak, buses, taxis, and motorcycles (ojek). The process of mode changing is very importanl. To do so, passengers have to walk to the next mode stop and sometimes they have to wait for the vehicle arrival. Research was undertaken to investigate the performance of the mode changing process, in terms of waiting time and walking distance, based on site measurement and on what passengers perceived, to model the relationship between the performance expected and what perceived by the passengers, and to evaluate the performance using standards set by Directorate General of Land Transport. It was found that based on both direct measurement and passengers perception, the performance of the changing process was good. There was a very good relationship between what expected and what perceived by passengers. The waiting time and walking distance met the standards required.
Kata kunci: perpindahan moda, waktu tunggu, jarak berjalan kaki.
Faculty of Engineering, Universitas Gadjah Mada
2012-09-27 18:41:44
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1098
Forum Teknik; Vol 29, No 1 (2005)
eng
Copyright (c)
oai:ojs.journal.ugm.ac.id:article/1268
2012-11-23T04:00:57Z
mft:ART
oai:ojs.journal.ugm.ac.id:article/1377
2013-01-10T01:14:32Z
mft:ART
oai:ojs.journal.ugm.ac.id:article/1378
2012-12-28T07:46:30Z
mft:ART
oai:jurnal.ugm.ac.id:article/1509
2024-03-29T10:35:04Z
mft:ART
"060904 2006 eng "
0216-7565
dc
Pengaruh Kondisi Lapangan terhadap Perancangan Menara Komunikasi Tipe Standar SST E-60
Syamsul Basri, Sumargo
I, Irwan
In the recent years, the communication sector has made a progressive development. The development is not only in the cornmunication technology, but also its supporting equipment. Communication tower is among the supporting equipments as a transmitter which is designed using steel material.
At the design stage, companies that design communication tower, have one or few models that hqs been used. Among the communication towers that have been used is communication tower of SST(Self Supporting Tower) E-60 type with 60 m height. The preliminary model is designed with certain field conditions, and came into a question, what will occur if communication tower be built in different field conditions?In this Steady, analysis is conducted to SST E-60, if it can be built in all earthquake zone inIndonesia, can be put in oblique land or with different elevation, how big differential settlement is allowed to happen cmd how many extra antennas can be put on the tower structure. The result shows that commtmication tower of SST E-60 type can be used in all earthquake zone inIndonesia, can be built vith dffirent elevation, has a dffirential ,seltlement ntaxintwn of 2.5 cm, and can he put extra antenna as much as 26 antennas.
Keywords: Communicalion tower, SST E-60, self supporting tower, wilayah gempa (earth zone), tanah miring (oblique land), differential settlement, antena.
Faculty of Engineering, Universitas Gadjah Mada
2013-01-08 07:46:16
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1509
Forum Teknik; Vol 30, No 3 (2006)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1607
2024-03-29T10:35:04Z
mft:ART
"060904 2006 eng "
0216-7565
dc
Pengaruh Potongan Harga pada Sistem Inventori (Q,R) yang Mempertimbangkan Ketergantungan antara Lot Size dan Lead Time
Indrianti, Nur
Prajoko, Setya
Ristyowati, Trismi
This paper is concerned with lot size dependent lead times in a (Q,R) inventory system considering-quantity discounts offered by suppliers. With regards to the existing model that considers the impact of lot size on lead time and safety stock equirements, we present an efficient iterative algorithm to decide lot size that minimizes total inventory cost. The algorithm simultaneously determines lot size and safety stock based on the tradeoff between inventory holding cost and shortage cost. A nurnerical example is provided to clarify the iteration procedure. In addition, we identify the effict of shop floor queing factor on lot size decision.
The result of the study shows that purchasing larger lot size does not always result in minimum total inventory cost. Larger lot size reduces per unit ordering cost and shortage cost, but increases the holding cost due to more inventories. Moreover, we conclude that increased shop floor queuing factor leads to increased production lead time, resulting in larger lot size.
Keywords: (Q,R) inventory system, lot size dependent lead times, quantity discount.
Faculty of Engineering, Universitas Gadjah Mada
2013-01-08 07:46:16
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1607
Forum Teknik; Vol 30, No 3 (2006)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1611
2024-03-29T10:35:04Z
mft:ART
"040904 2004 eng "
0216-7565
dc
Analisis Hidraulik Sistem Drainasi di Lahan Gambut Lapangan Minyak Duri Caltex Pacific Indonesia Riau
Wignyosukarto, Budi
Duri Field covers an area of approximately 9500 hectars that will be developed with steam injection (steamflooding) into I3 areas. During rainy season, several part of the Duri Field are inundated by rain water that disturbing the operation of the exploration. The problent of inundation in The Duri Field Area that endanger the CPI focilities could be caused by limited canal capacity and bad performance of hydraulic stuctures, change of Rainfall – Runoff relation due to the change of infiltration capacity of the watershed area, land subsidence due to excess load and ground water extraction. Unfurtunately, part of the Duri Field is laid down on the peat soil dome that is subject to land subsidence under an intensive drainage.
The important issues in developing a peat lands are land subsidence due to shrinkage and changes to peat properties. Oxidative changes are irreversible. The effort of draining the excess run-off water by increasing the existing canal capacity shall in no way cause for over-draining and lowering the gyound water level during dry season. The drainage system shall be designed to maintain this ground water level to avoid any soil subsidence and drying the peat. An hydraulic simulation to analyze the probable ground waler extraction is performed.
The result of conventional hydraulic simulations require a widening and deepening part of the primary canal. This channel improvement will increase the drainability, but in the other side could prontote the lowering of water table, peat oxidation and land subsidence. Instead of channel improvement, increasing the elevation of Duri Field facilities above flood level and developing collector drainage channel along the border of Duri Field are suggested.
Keywords: drainage, peat soil, subsidence.
Faculty of Engineering, Universitas Gadjah Mada
2012-10-12 15:36:30
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1611
Forum Teknik; Vol 28, No 3 (2004)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1633
2024-03-29T10:35:04Z
mft:ART
"050102 2005 eng "
0216-7565
dc
Pengembangan CNC Retrofit Milling untuk Meningkatkan Kemampuan Mesin Milling Manual Dalam Pemesinan Bentuk-bentuk Kompleks
Herliansyah, Muhammad Kusumawan
In small-size mould manufacturing industry, milling process is an important element because this process consumes the longest produclion time. AIso, milling process needs great investments in tools. Most of the small-size mould manufacturing industries uses manual-milling machine for roughing process. Manual milling machine is used because of capacity limitation of the CNC milling machine and high investment of CNC machines.
A prototype of low-cost CNC retrofit milling system is developed in this research, to enhance manual milling machine capabilities, in accuracy, speed, and process complexity. The advantage of the prototype results in reduced manufacturing cost and reduced lead time. This research also compare the capabilities of the prototype to others milling systems.
The prototype results in accuracy of X axis and Y axis respectively 0.013 mm and 0.009 mm. This system is capable to set the feed rate of minimum 1 mm/min and maximum 250 mm/min, depending on the material being processed.
Keywords: prototype, retrofit, CNC milling
Faculty of Engineering, Universitas Gadjah Mada
2012-09-27 18:41:44
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1633
Forum Teknik; Vol 29, No 1 (2005)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1807
2024-03-29T10:35:04Z
mft:ART
"110102 2011 eng "
0216-7565
dc
Setting Ruang Permukiman dalam Pengembangan Ruang Bermukim Di Kepulauan Togean Sulawesi Tengah
Mulyati, Ahda
Soewarno, Nindyo
Ronald, Arya
Sarwadi, A
Togean the islands are cluster of the small islands located in the district of Tojo Una-una and the very excited tourist attraction in Central Sulawesi Province. Some of the cluster of the islands is the settled place Bajo communities who occupied the coastal areas and the small islands. The islands are formed from the volcanic activity with the fertile plants as well surrounded by the rocks formations. Piles of the rocks to forms and functions as a place to living. Togean the islands has an area of ±362,000 ha and has been designated as one of the Marine National Park in the Indonesia. Case study research approah used with multiple cases, naturalistic quantitative data collection with analysis techniques in exploration.
The islands in the islands Togean as a shelter the coastal communities particularly in the settlements on the islands of Enam/Enau (district Togean) and the island Kabalutan (district Walea the island). The two these islands setting show a very specifically lived spaces because it is strongly influenced by of nature physical factors, socio-economic conditions, and the local wisdom there. The development of the settlement spaces setting formal due to : (a) the limited land areas as a dwelling allocation, (b) presense of land potential that can be developed to support the economic life and the preservation of natural environment, and (c) the environmental suistainability of its settlement that a unique and specific.
Keywords : Setting Space, Housing, Development Settlement
Faculty of Engineering, Universitas Gadjah Mada
2013-04-24 20:18:55
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1807
Forum Teknik; Vol 34, No 1 (2011)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1831
2024-03-29T10:35:04Z
mft:ART
"110102 2011 eng "
0216-7565
dc
Rekayasa Matarial Akustik Ruang Dalam Desain Bangunan : Studi Kasus Rumah Tinggal Sekitar Bandara Adisutjipto Yogyakarta
Kaharuddin, K
Kusumawanto, Arif
This research was conducted to determine the conditions and manipulate the acoustic material by the mathematical experiment method the calculations was using a specific formula replacing the value of material acoustic sound coefficient. The focus of this research was analyzing the sound absorption and noise reductions of acoustic materials used in residential arround Adisutjipto airport of Yogyakarta then proceed with the analysis of sound absorption and noise reduction of coconut palm fiber designed acoustic materials based on buiding physical theory.
The results show that the low sound absorption and noise reduction of the acoustic material inside the sample chamber was due to the material used had a sound reflector characteristic, so optimize the noise reduction it was needed an additional layer of acoustic material used in the fields. The high sound absorption and noise reduction of the coconut palm fiber desgned materials caused by these materials had sound-absorbing properties. The addition of coconut palm fiber layer for acoustic material could optimize the noise reduction. In addition, the coconut palm fiber acoustic material could be used as an altenative sound dampening material at high frequencies that could potentially reduce the waste of nature.
Keywords : Residential, accustics materials, coconut fiber, mathematical experiment.
Faculty of Engineering, Universitas Gadjah Mada
2013-04-24 20:18:55
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1831
Forum Teknik; Vol 34, No 1 (2011)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/1906
2024-03-29T10:35:04Z
mft:ART
"110102 2011 eng "
0216-7565
dc
Peraturan Zonasi: Peran Dalam Pemanfaatan Ruang dan Pembangunan Kembali di Kawasan Rawan Bencana Kasus: Arkadelphia City, Arkansas USA
Korlena, K
Djunaedi, Achmad
Probosubanu, Leksono
Ismail, Nurhasan
Earthquake, tsunami and volcanic eruption are some of the various disasters that frequently hit in Indonesia. These disasters impact damage from small to large. These disasters also have a major impact on the balance of community lifes who are victims. Various efforts of reconstruction, rehabilitation and reconstruction are undertaken by governments, communities and various stakeholders. To succeed as expected, these efforts should be based an a spatial plan which is suitable and comprehensive. The spatial planning in disaster prone areas is indispensable in dealing with disasters before, during and after a disaster. Formulation and implementation of spatial plans are turned to face many problems such as limited and the loss of data due to disasters, as well as social and cultural conditions in disaster prone areas. To streamline the implementation of spatial plans and land use control need zoning regulation as a land use control instrument. Therefore, it is necessary to study the role of zoning regulation in the utilization of space and rebuilding in disaster areas prone.
This study used a descriptive approach with literature sources. The results show that: (1) The Making of spatial plan on the basis of disaster mitigation in disaster prone areas is indispensable in dealing with disasters, before, during and after a disaster and should be complemented with zoning regulations, (2) The making of spatial plan and zoning regulations in the region after the disaster requires a special approach by modifying the normal procedure, and (3) zoning regulation as a land use control instrument control instrument guides the implementation of various activities related to disaster mitigation and need to be adjusted to the social, economic, cultural and characteristics of each disaster prone areas.
Keywords : spatial plan, zoning regulation, disaster prone areas, disaster mitigation.
Faculty of Engineering, Universitas Gadjah Mada
2013-04-24 20:18:55
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/1906
Forum Teknik; Vol 34, No 1 (2011)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/2041
2024-03-29T10:35:04Z
mft:ART
"110102 2011 eng "
0216-7565
dc
Dinamika Pemanfaatan Lahan Kampung Bersejarah 'Luar Batang' - Jakarta Utara
Puspitasari, Popi
Djunaedi, Achmad
Setiawan, Bakti
S, Sudaryono
The dynamic of land utilization is related to changes of land function. In this contect, the morphological study is impemented to uncover the changes in land functions in Kampung Luar Batang, Nort Jakarta, Indonesia. Kampung Luar Batang is a historical Kampung which was estabished by VOC in Batavia under the influence of existence of a Moslem missionary, Al-Habib Husein bin Abubakar Allaydrus, and accelerated by the its strategic geographical location close to urban economic centers, Historically, Luar Batang has been a place for laborers' settlement, VOC defense port, port of transit for migrants, pilgrimage center and rental dwelling that is surrounded by illegal housing. Each function was not chronologically appeared, but developed in multi-layered manner.
In fact the historical meanings of Luar Batang were not obtained through in depth literature study, since the availability of references about the kampung is very limited. This study is an effort to uncover the physical elements of the kampung from historical perspective, based on the maps documentatin and empirical study. The graphical abstraction model presented at this paper is an attempt to clarify the dynamic of land utilization.
Keywords : Morphology, Kampung bersejarah, Luar Batang.
Faculty of Engineering, Universitas Gadjah Mada
2013-04-24 20:18:55
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/2041
Forum Teknik; Vol 34, No 1 (2011)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/2042
2024-03-29T10:35:04Z
mft:ART
"110102 2011 eng "
0216-7565
dc
Ontologi Sistem Penilaian E-Learning Berbasis Kompetensi
Windisari, Desi
Kusumawardani, Sri Suning
Santosa, P. Insap
Automation grading on e-Learning assessment helps educators in assessing the results of the exam. In a previous research, automation grading vaue jus in the form of numbers, not performed a review the achievement of competency standards. In this research we developed assessment system ontology design fo e-learning base competence. This propose ontology design models the relation between matter and competence then made the rule for the calculation of achievement students against each competency and make recommendations to the student passing the exam. From the test results with the protege show that ontology design can grade the assessment and give recommendations to the student passing the exam, in accordance with the rules made.
Keywords : Ontology, assessment e-Learning, Automation grading.
Faculty of Engineering, Universitas Gadjah Mada
2013-04-24 20:18:55
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/2042
Forum Teknik; Vol 34, No 1 (2011)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/2328
2024-03-29T10:35:04Z
mft:ART
"110102 2011 eng "
0216-7565
dc
Ekstraksi Ciri dan Identifikasi Citra Otak MRI Berbasis Eigenbrain Image
Soesanti, Indah
Susanto, Adhi
Sri Widodo, Thomas
Tjokronagoro, Maesadji
In this research, we exctract and identify MRI brain images based on eigbrain image. MRI barain images are used to be input for feature exctraction and identitication. Feature exctraction is done by using the eigbrain image. For all reference image, we find image mean and eigbrain image, and the results are stored. If there is test image, we will find the nearest distance of eigenbrain between test image and reference images. The feature extraction is used to identify the image is whether the normal brain image or the brain image with tumor.
The results show that the method successfully classifies MRI images into tree clusters: normal, glioma, and metastase. The input test images can be identified accurately 100% for image
sizes from 256 x 256 pixels to 64 x 64 pixels.
Keywords : feature extraction, image identification, MRI medical image, eigenbrain image.
Faculty of Engineering, Universitas Gadjah Mada
2013-04-24 20:18:55
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/2328
Forum Teknik; Vol 34, No 1 (2011)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/2329
2024-03-29T10:35:04Z
mft:ART
"110102 2011 eng "
0216-7565
dc
Performa Mesin Sepeda Motor Empat Langkah Berbahan Bakar Premium dan Pertamax
Sukidjo, FX.
The Republic of Indonesian government proposes the owners of private vehicle in order to use pertamax as fuel. Premium will be consumpted specially for the public transportation. Therefore it is required research how the effect of fuel used to the engine performance.
This research has used a matic motor cycle engine as testing material. This vehicle is used because matic vehicle are large applicated as private transportation. Data which are required as performance of the engine, involve power and torsion, rate of fuel consumption, temperature of cylinder head cover and emission of the axhausted gas.
Based on the anaysis of the data, can be concluded that type of the fuel affects to the engine which consumpted pertamax are higher than engine which consumpted premium. Rate of premium consumption is larger than rate of pertamax consumption
Keywords : engine performance, oil fuel, emision.
Faculty of Engineering, Universitas Gadjah Mada
2013-04-24 20:18:55
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/2329
Forum Teknik; Vol 34, No 1 (2011)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/2351
2024-03-29T10:35:04Z
mft:ART
"110102 2011 eng "
0216-7565
dc
Komparasi Karakteristik Menara Pendingin Menggunakan Beberapa Tipe Susunan Pipa-pipa sebagai Pendistribusi Cairan
Johanes, Susanto
The aims of the experiments are to characterize of the cooling tower by using the bank of the pipes as the fluid distributor. The cooling tower is constructed by rectangle of glasses which it has 9 cm x 9 cm in cross section and 100 cm in height. The fluid distributors are constructed by pipes in 5/8 inch of nominal diameter. There were five types of the packing namely the fluid distributor without baffle, fluid distributor with one baffle, the fuid distributor with two baffles, the fluid distributor with there baffles and the fluid distributor with four baffles.
The experiment have been done by flowing the hot water from the top of cooling tower through the fuid distributor, on the other hand, the air cooler is flown above through the fluid distributor opposite to the water flow direction. This process makes the exchanging of the heat between air and water on the fluid distributor. The variables varied in this experiments are the inlet water temperature, Twi (45, 50, 55 and 60 °C), the height of fluid distributor, Z (30.5, 61 and 91.5 mm), the ratio of water/air mass flow, mw/ma (3.624, 5.888 and 7.700) and the number of baffle (without baffle, one baffle, two baffles, three baffles and four baffles).
The experimental results show that in the ratio of water/air mass flow rate which is lower, the increasing of the numbers baffle cause the decreasing of characteristic. Mean while, in the ratio of water/air mass flow rate which is higer, the increasing of the numbers of baffle cause the increasing of the characteristic. The cooling tower without the fluid distributor has the average characteristic is 13.4% and the average effectiveness is 16.2%. For the cooling tower with the fluid distributor has the average characteristic is 31.5% and the average effectiveness is 25.0%.
Keywords : Cooing tower, characteristic, fluid distributor.
Faculty of Engineering, Universitas Gadjah Mada
2013-04-24 20:18:55
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/2351
Forum Teknik; Vol 34, No 1 (2011)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/4340
2014-05-06T09:53:30Z
mft:ART
"130102 2013 eng "
0216-7565
dc
Perubahan Hunian Tradisional Suku Dayak Bukit di Kalimantan Selatan (Kajian Perubahan dengan Metode Etnografi)
M, Bani Noor
D, Tony Atyanto
Ronald, Arya
Ahimsa-Putra, Heddy Shri
This paper explains the change of Dayak Bukit's dwelling in the Meratus Mountain in South Kalimantan Province, Indonesia. This research utilized naturalistic paradigm based on the axioms of the nature of reality. By focusing the study on local people, this research employed ethnography met, .od, particularly domain analysis. Interpretation of the domain came into the result that balai-adat is one of the shelters of Dayak Bukit tribes. Currently, Dayak Bukit tribes do not live in a communal dwelling anymore, but live in scuttered housing. Consequently, the function of balai-adat shift from a dwelling into a place of ceremony and cultural activities. It is concluded that balai-adat is an identity of the groups and it corltributes to maintain the existence and the representation of the structure of the Bukit Dayak tribes.
Keywords: dwelling change, balai-adat, Dayak Bukit tribes, identity of the groups.
Faculty of Engineering, Universitas Gadjah Mada
2014-05-06 16:53:30
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/4340
Forum Teknik; Vol 35, No 1 (2013)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/4359
2014-05-06T09:53:30Z
mft:ART
"130102 2013 eng "
0216-7565
dc
Kenyamanan Visual Ruang Kerja Kantor
Jamala, Nurul
Visual comfort Prameter is the level suficient of illumination recommended which is not exceed the threshold contrsat and stated brightness level, and no room glare occured. Not only to illuminate the work space, level of illumination also effects on the room condition (comfort and fun) that create a comfortable oflce work space.
The goal of this research is to recognize the influence of furniture lay out and light spot placement on the work space, and if the color of materials effect on the reflectance value of wall and ceiling. In this study, descriptive metode applicated on the Dialux program concluded that light point and furniture lay out made effect on the illumination level of the work space, and the color of materials influence the effect of reflectance.
This research is expected to serve as guidelines in designing office work space inaccordance with the recommended illumination level.
Keywords: illumination, luminance, visual comfort
Faculty of Engineering, Universitas Gadjah Mada
2014-05-06 16:53:30
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/4359
Forum Teknik; Vol 35, No 1 (2013)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/4361
2014-05-06T09:53:30Z
mft:ART
"130102 2013 eng "
0216-7565
dc
Spektrum Frekuensi Sinyal EEG Terhadap Pergerakan Motorik dan Imajinasi Pergerakan Motorik
Yulianto, Endro
This research is aimed to getji-equency spectrum of EEG signals for the motor movement and imagination of motor movement. EEG data is measured from scalp electrode of C3, C4, P3 and P4 (Central and Parietal). The motor movement in this research is "turn right” and "turn left” in which the steering wheels are used to facilitate the volunteer in having concentration. Imagination of motor movement meanwhile represents desire of volunteer to turn steering wheel either to right or to left. Fourier transform is used to transform signals in time domain becoming signals in frequency domain. The result in this research shows the difference of frequency spectrum among motor movement of "turn right" and "turn left" as well as in imagination of motor movement.
Keywords: BCI, ERS/ERD, transformasi fourier, motor movement
Faculty of Engineering, Universitas Gadjah Mada
2014-05-06 16:53:30
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/4361
Forum Teknik; Vol 35, No 1 (2013)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/4446
2014-05-06T09:53:30Z
mft:ART
"130102 2013 eng "
0216-7565
dc
Parental Control Model for High School E-Learning
Kusumawardani, Sri Suning
Ferdiana, Ridi
Adopting e-Learning in high school is challenging. The main problem in this situation is the adoption of e-Learning as a self-paced learning. In universities, the problem rarely happens since the students in universities have an awareness to explore and to learn by themselves. In high school level, student awareness is limited.High school students more likely need a control mechanism to use e-Learning. In this research, an efort is made to create a model that collaborate parents to control e-Learning usages. The collaboration of parents in e-Learning strongly believed can provides additional value of effectiveness in student e-Learning usage.The result of this research is a model called PCM (Parental Control Model). PCM is an architectural model that contains of information and software architecture that will cover business process collaboration between parent and student.
Keywords: e-Learning, parental control model, software architecture, interaction model
Faculty of Engineering, Universitas Gadjah Mada
2014-05-06 16:53:30
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/4446
Forum Teknik; Vol 35, No 1 (2013)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/4447
2014-05-06T09:53:30Z
mft:ART
"130102 2013 eng "
0216-7565
dc
Studi Variabilitas Isotop Airhujan Sebagai Fungsi Elevasi untuk Mendapatkan Merapi Meteoric Water Line MMWL
Wijatna, Agus Budhie
Sudarmadji, S
Sunarno, S
Hendrayana, Heru
Theoretically environmental isotopic compositions ofprecipitation decrease with increasing altitude. Linear regression analysis was applied to environmental isotopic compositions (δ18O, δ2H) data on 15 precipitation samples collected along an altitudinal 126 to 1260 m.asl from November 2011 to February 2012 to determine the local meteoric water line for southern slope of mount Merapi. Merapi meteoric water line (MMWL) is an equation that describes the relationship between isotopic compositions of precipitation with altitude. This study was completed as part of a larger research of the groundwater dynamics studies using natural isotopes for southern slope of mount Merapi.
Isotopic compositions of precipitation samples were measured using Liquid-Water Stable Isotope Analyzer LGR DLT-100 at the Center for the Application of Isotopes & Radiation Technology Laboratory, National Nuclear Energy Agency (BATAN), Jakarta. Regression results for the precipitation samples for southern slope of mount Merapi yielded a MMWL defined by the equation δ2H=8.332 δ18O+15.068(r2 =0,998); the change of isotopic compositions in precipitation with altitude of about -1.2%d100m for deuterium and -0. 1 %dl 00m for oxygen-18.
This equation will be useful as reference for hydrological dynamics studies on the southern slope of mount Merapi that use isotopes of 2H and 18O to trace sources of ground-water recharge, to evaluate mixing of sea-water and groundwater, to analyze groundwater-mineral exchange, and to analyze many other groundwater contamination problems.
Keywords: precipitation, isotope ratio, isotopic composition, m.asl, MML .
Faculty of Engineering, Universitas Gadjah Mada
2014-05-06 16:53:30
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/4447
Forum Teknik; Vol 35, No 1 (2013)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/4972
2014-07-21T03:37:52Z
mft:ART
"130502 2013 eng "
0216-7565
dc
Latar Ombo, Fungsi dan Konsep Ruang Publik di Desa Tieng Kabupaten Wonosobo
Hermanto, Heri
Djunaidi, Achmad
Sudaryono, S
Latar ombo (a wide yard) at Tieng village Dieng Wonsobo has a function as a public area to hold cultural and tradition activities. The research questions are, how latar ombo function and role as public area society and what concept underline the building of latar ombo at the Tieng village.
The research uses phenomenology by inductive technique. Data by collected by deep interview, the informans are ten peple.
Based on inductive analysis about information units, it can be found three themes. Then these were discussed to know the local concepts of public space. The result shows that there are interrelation among latar ombos owned by people at Tieng village so that latar ombo becomes a public area which is needed by society.
Keywords: public space, latar ombo, the concept of interrelation
Faculty of Engineering, Universitas Gadjah Mada
2014-07-21 10:37:52
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/4972
Forum Teknik; Vol 35, No 2 (2013)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/4973
2014-07-21T03:37:52Z
mft:ART
"130502 2013 eng "
0216-7565
dc
Pakarangan di Permukiman Desa Singengu Mandailing Julu, Sumatra Utara
Nuraini, Cut
Djunaidi, Achmad
Sudaryono, S
Subroto, T Yoyok
A yard in Singengu Village has a different meaning with a yard in general. Pakarangan or yard in Singengu Village comparises of side area and front area of Bagas (house). It means that the backside area is not a yard. Pakarangan does not has variety vegetation as many house yard, except decorated plant like flower. The objective of this research is to find out pakarangan concept, factors infuenced its concept and what the meaning of pakarangan phenomenon.
This research used phenomenological paradigm with naturalistic approach and inductive-qualitative analysis methode. The result of this research are pakarangan comparises of alaman (space in front of bagas), pamispisan (space beside of bagas) and taruma bagas (space underneath of bagas). The backspace of the house is not part of pakarangan but it is a separate space called parik. The concept of pakarangan is based on Mandailing cosmology's belief about Banua Partoru (bottom word). Parik is cnsidered to Banua Portoru, therefore parik is not a part a pakarangan. The meaning of pakarangan is Singengu village is the whole of bagas area except parik.
Keywords: Pakarangan, Alaman, Bagas, Parik, Banua Partoru
Faculty of Engineering, Universitas Gadjah Mada
2014-07-21 10:37:52
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/4973
Forum Teknik; Vol 35, No 2 (2013)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/5006
2014-07-21T03:37:52Z
mft:ART
"130502 2013 eng "
0216-7565
dc
Rancangan Perumahan dan Interaksi Penghuni dengan Sekitar Studi Kasus : Perumahan Menengah Atas di Yogyakarta
Winandari, Maria Immaculata Ririk
Wibisono, Bambang Hari
Djunaidi, Achmad
Ahimsa-Putra, Heddy Shri
Upper middle-class housing has been growing fast in Yogyakarta, most of these being exclusive estate with limited acces. There has been curiosity that this condition minimizes interaction between in habitants of housing estate and people in the surrounding area. Therefore, the purpose of this study was to examine the relatianshif between housing layout, inhabitants’ interaction, and people in the surrounding area. The study was conducted in four Yogyakarta’s housing estate representhing the upper middle-class income community, they are Pertamina Complex Estate, Nandan Griya ldaman Estate, Griya lntan Permai Estate and Casa Grand Estate. The case study method was used to establish the relatianshif between housing layout and inhabitants’ interaction through comparison of cases. The results of the study show that the number of housing entrances, public, and commercial facilities as well as the obscure physical boundaries influence the interaction among inhabitants of housing estate and people in the surrounding area. The high expectation of safety, security warranty, and the housing surveillance minimised the interaction between in habitants of housing estates and people in the surrounding area eenwendfng ered. The design af the estates that enables local people to use the estates' facilities contributed to the increased interaction between inhabitants of housing estate and people in the surrounding area.
Keywords: housing layout, public open space, interaction, upper midd/e-class, Yogyakarta
Faculty of Engineering, Universitas Gadjah Mada
2014-07-21 10:37:52
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/5006
Forum Teknik; Vol 35, No 2 (2013)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/5134
2014-05-06T09:53:30Z
mft:ART
"130502 2013 eng "
0216-7565
dc
Penjejak Pose Wajah Otomatis pada Sistem Pengenalan Wajah
Firdausy, Kartika
Teknik Elektro
Fakultas Teknologi Industri
Universitas Ahmad Dahlan
Face recognition systems have been widely used in various security applications, for example in attendance system. The success of face recognition system relies on the trained face images as well as the face image captured that being recognized. Among the variables that determine the success of face recognition is face pose. Previous works showed that frontal face pose produced the best face recognition success rate. This paper proposes a face pose tracking sub system that can be used as a filter so that only the frontal face pose that will be processed in the face recognition sub system. The criteria for various face poses, i.e. frontal, tilted and turned, either left or right, have been formulated. Experimental results showed that the success rate of face pose recognition were between 64% up to 96%, with average of 84,7%.
Faculty of Engineering, Universitas Gadjah Mada
2014-05-06 16:53:30
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/5134
Forum Teknik; Vol 35, No 1 (2013)
eng
Copyright (c) 2013
oai:jurnal.ugm.ac.id:article/5135
2014-07-21T03:37:52Z
mft:ART
"130502 2013 eng "
0216-7565
dc
Kebijakan Maintenance Berbasis Analisis Model Kerusakan Studi Kasus Pengoperasian & Pemeliharaan Turbin Uap di Pabrik Gula
Harnowo, Saptiaji
Sunarno, S
Sihana, S
Steam turbine in sugar plant already used as prime mover for exchanged the earlier model was steam engine. In fact, the operation of steam turbine in milling season many failures accured and have not been predicted before so that the system have low in operation.
In this research, steam turbine would be analyzed their failure mode during milling season. The model has been constructed from many failure mode data operation and maintenance that was taken for 4 years (2006-2009). Weibull rank regression is used for this analysis, with the results of 2 (two) weibull parameter, consist of number shape parameter β=2.99, scale parameter η=1967.
Interpreting number of those weibull parameter based on bath tub curve failure mdel, indicated that the steam turbine failure characterized as wear out model with failure rate increasing to mission time. Average life MTBF=82 days (no stop milling, 1 day=24 hours).
To determine maintenance policy based on prediction component life with the result of speed controller (MTBF=984.6 hours), governor valve (MTBF=1649 hours), bearing turbine (MTBF=1892 hours), and lubrication turbine system (MTBF=1026 hours).
With the MTBF life data, we can control the operation and maintenance steam turbine in sugar plant so minimize risk and failure during milling season.
Keywords : failure, MTBF, milling, maintenance, weibull parameter
Faculty of Engineering, Universitas Gadjah Mada
2014-07-21 10:37:52
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/5135
Forum Teknik; Vol 35, No 2 (2013)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/7439
2015-10-01T01:36:04Z
mft:ART
"150929 2015 eng "
0216-7565
dc
Perubahan Sistem Struktur Bangunan Rumah Bugis Sulawesi Selatan
Hartawan, H
Suhendro, Bambang
A structural system determines the strength of the building in order to be able to survive in the long period of time. Functioning as residential house, Bugis houses have been through a long period of time and are supported by the use of specific structural system of the building. This structural system has changed in many ways and forms. This research is aimed at identifying the changes that have occurred in the structural system of old Bugis houses and factors that influence such changes. This research employed descriptive models and typology. Descriptive models were used to reveal the phenomenon of point movement of the structural system aided by SAP 2000 software. Typology was used to classify the types of changes that occurred in the system. The research revealed that the structural system of building of Bugis houses has changed by means of cross and internal system. The system used in the past had lower strength than that used in the next period. The characteristics of the changes in the structural system improved by means of transfer of the use of the construction method from the use of free placement to the use of stiff connection. This change was influenced by three aspects, namely of natural resource aspect, stiffness aspect, and cultural and belief aspects. The natural resource aspect is related to the availability of building materials in terms of quality and quantity. The building of Bugis houses in the past used higher quality materials than the system that developed afterwards. The stiffness is related to the efforts of Bugis technocrats in the past in optimizing the structural system. The results of the analysis indicated that the extent of the horizontal of a point movement is in proportion to the height of point position of the structural system. The higher the location, the greater the movement. The culture and belief are related to the survival for individual and group.
Keywords: changes, structural system, Bugis houses
Faculty of Engineering, Universitas Gadjah Mada
2015-09-29 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/7439
Forum Teknik; Vol 36, No 1 (2015)
eng
Copyright (c) 2015 Majalah Forum Teknik UGM
oai:jurnal.ugm.ac.id:article/7442
2015-11-13T09:54:41Z
mft:ART
"150929 2015 eng "
0216-7565
dc
Perubahan Spasial Permukiman Sulaa Baubau Pasca Reklamasi Pantai
Kadir, Ishak
Djunaedi, Achmad
Teknik Arsitektur dan Perencanaan
Sulaa is one of the coastal villages in Baubau, most people work as fishermen and weaver, therefore the sea is a very important part of their lives. Local Government has reclaimed Sulaa coast as an effort to solve abrasion that was faced by Sulaa’s people every year. The reclamation has impact on the social, economic, and cultural community. This paper aims to show the variety of spatial changes of settlements and spatial behavior of people in the postreclamation of the coastal settlement. This research uses Phenomonology paradigm and inductive analysis methods. The main instrument is the researcher ownself with the hypothesis that a researcher can see the object in its context, observes directly and improves the awarness continuously.
This research showed there are spatial changes occured in post-reclamation of the coastal settlement, includes (1) a change in the spatial patterns and density of buildings, which is followed by a change in the orientation of the building and adjustment of space in their homes, especially the buildings in the area of reclamation;(2) spatial patterns of social, economic and cultural community tends to be oriented to the shore.
Keywords: Spatial changes, post-reclamation of the coastal settlement, Sulaa.
Faculty of Engineering, Universitas Gadjah Mada
2015-09-29 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/7442
Forum Teknik; Vol 36, No 1 (2015)
eng
Copyright (c) 2015 Majalah Forum Teknik UGM
oai:jurnal.ugm.ac.id:article/7480
2015-10-01T01:36:04Z
mft:ART
"150102 2015 eng "
0216-7565
dc
Pengembangan Metode Pembuatan Molding Injeksi Plastik dari Serbuk Komposit
Darmo, Suryo
Aluminium-particulate glass matrices composites generally use the pressure in the making of green parts/green specimens before heating at sintering temperature.The purpose of this research is to develop the glass composites that it can be used as a material for indirect layer manufacturing, especially used for making plastic injection mold/insert mold. To achieve these goals, the flexural strength and dimensional errors were studied.
Starting materials consist of the mixture of glass powders, aluminium powders, and acrylic powders in the volume ratio of 1 : 1 : 1. The glass powders and aluminium powders were
recovered from waste materials. The size of acrylics and glass particles was lower than 0.074 mm and aluminium particles size was lower than 0.297 mm respectively. Green specimens were made by using indirect layer manufacturing processes, while sintered specimens obtained by heating the green specimens in a furnace at a temperature of 700°C for 1 hour. Finished specimens were made by impregnation process of sintered specimens using epoxy resin.
The bending strength of green specimens, sintered specimens, and finished specimens is 20 kg/cm2, 80 kg/cm2, and 170 kg/cm2 respectively. Maximum dimensional error of green specimens and sintered specimens is 50% and 40% respectively. Insert mold made by indirect layer manufacturing is broken after producing as many as 120 pieces of plastic products.
Keywords: glass matrix composite, insert mold, dimensional error, bending strength.
Faculty of Engineering, Universitas Gadjah Mada
2015-09-29 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/7480
Forum Teknik; Vol 36, No 1 (2015)
eng
Copyright (c) 2015 Majalah Ilmiah Teknologi
oai:ojs.journal.ugm.ac.id:article/7481
2015-10-01T01:36:04Z
mft:ART
oai:jurnal.ugm.ac.id:article/7498
2015-10-01T01:36:04Z
mft:ART
"150102 2015 eng "
0216-7565
dc
Aplikasi Isotop Alam untuk Mengetahui Asal-Usul Air Umbul Cokro, Kecamatan Tulung, Kabupaten Klaten
Kharisma, Harry Leo
Wijatna, Agus Budhie
Wilopo, Wahyu
Determination of the goundwater origin of Umbul (spring) Cokro, at Klaten has been done by using environmental isotope tracers, i.e. carbon-13, deuterium, and oxygen-18. Groundwater samples were taken from springs and wells in surround of it, i.e. Wajong Wetan, Kemiri, Karang Podang, Sodong, and Karang Kendal. In the mean time, determination of groundwater genesis has been conducted by analyzing the composition of deuterium (2H) and oxygen-18 (18O) using mass spectrometer. While the direction of groundwater which has the same genesis is determined by analyzing of carbon-13 composition and will be verified by hydraulic gradient.
If the composition of sample from suround is almost equal with sample from spring, hence groundwater from well flows to spring.
The result of this research showed that δ13C composition of each sample is -12,92 + 4,20 until 5,56 + 4,31 o/oo PDB, that means that the sample include in Groundwater Dissolved
Inorganic Carbon; while analysis of deuterium and oxygen-18 indicated that composition of groundwater molecule in Sodong, Karang Podang, and Karang Kendal are almost equal to the spring, with δD composition = -52,00 + 0,77 o/oo and δ18O composition = -9,16 + 0,28 o/oo to Standard Mean Ocean Water (SMOW). Based on those results, groundwater of Umbul Cokro originally from Sodong, Karang Podang, and Karang Kendal.
Keywords: groundwater, recharge area, Umbul Cokro, environmental isotope tracer.
Faculty of Engineering, Universitas Gadjah Mada
2015-09-29 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/7498
Forum Teknik; Vol 36, No 1 (2015)
eng
Copyright (c) 2015 Forum Teknik
oai:jurnal.ugm.ac.id:article/7499
2015-10-01T01:36:04Z
mft:ART
"150102 2015 eng "
0216-7565
dc
Analisis Kualitas dan Kuantitas Steganografi dengan Interpolasi pada Citra Medis
Wulandari, Meirista
Soesanti, Indah
Nowadays sharing of medical images through Internet is very popular to make telediangosis, telesurgeries and teleconsultation. Steganography is an art of hiding information inside of a media, which is called cover media. This research presents steganography image on medical image. The medical image is divided into two areas edge and non-edge area. Each area has its embedding and extraction algorithm. A medical data in a text form is hidden inside
medical image by interpolation technique. Interpolation technique is used to increase the embedding capacity. After steganography process, medical data and its cover image and its earlier image must be recovered and reversibled from extraction its stego image. The results show an average of the optimum embedding capacity is 103,404 bit with average PSNR is 41.8682 dB. Furthermore, analysis on texture of the stego image is done by this research. The analysis shows the impact of embedding process. The results of texture analysis is embedding process gives a big impact to energy 27.9199%, entropy 5.4725% and skewness 1.5266%.
Keywords: steganography, data, medical image, interpolation, texture image
Faculty of Engineering, Universitas Gadjah Mada
2015-09-29 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/7499
Forum Teknik; Vol 36, No 1 (2015)
eng
Copyright (c) 2015 Forum Teknik
oai:jurnal.ugm.ac.id:article/7509
2015-10-01T03:06:31Z
mft:ART
"150102 2015 eng "
0216-7565
dc
Evaluasi Medical Response Preparedness Pada Unit Gawat Darurat (Studi Kasus di IGD Rumah Sakit Umum Pusat Dr. Sardjito Yogyakarta)
Puspitasari, Indah
Masruroh, Nur Aini
In the last decade, there were 2 disasters that killed many people in Yogyakarta, such as earthquake in 2006 and Merapi eruption in 2010. Therefore, as one of reference hospitals,
RSUP Dr. Sardjito must have good medical response preparedness to handle victims that were evacuated to RSUP Dr. Sardjito, therefore evaluation of medical response preparedness that has been applied in RSUP Dr. Sardjito is needed, in purpose deciding resources allocation.
Simulation is used to evaluate medical response preparedness. Model is built based on real system when Merapi eruption is happened and on extreme points of arrival rate of victims to RSUP Dr. Sardjito, that is on 5 and 7 November 2010. Then the model is simulated and evaluated by using average waiting time for victims to be handled as indicator. The evaluation result will decide resources allocation that is needed. simulation of model 5 November results average waiting time for patient with severity 1, 2, 3, and 4 is 2991,26; 72,19; 0; 0 minutes. While model 7 November results waiting time for patient with severity 2, 3, and 4 is 0,22; 0; 0 minutes. From the results, sensitivity analysis is used to decide resources allocation needs.
Keywords: medical responses, emergency department, simulation, disaster, system improvement
Faculty of Engineering, Universitas Gadjah Mada
2015-09-29 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/7509
Forum Teknik; Vol 36, No 1 (2015)
eng
Copyright (c) 2015 Forum Teknik
oai:jurnal.ugm.ac.id:article/7510
2015-10-01T03:20:19Z
mft:ART
"150102 2015 eng "
0216-7565
dc
Analisis Pengaruh Jumlah Responden pada Evaluasi Usabilitas Aplikasi Edukasi Anak-Anak
Puspitasari, Melita
Dharmastiti, Rini
The development in technology for children is now increasing. In order to make the design and appearance of a software/application is easy to operate, run, and understood by children, an usability test is needed. One method that popular in usability testing is thinking aloud that takes at least 3-5 samples so the optimal problem can be found during test. This study aims to determine whether the needs of the number of respondents in the thinking aloud method is still relevant today, especially when applied to children, and to determine the effect of number of children involved in the test on usability problems found.This study involved 10 children as
subjects with a mean age of 10,6 years to play educational application that run on Apple Ipad 2 named Candy Factory. However, the number of respondents in usability test on children's educational application has the effect that the more the number of respondents, the more problems found but only up to 4 respondents. More than 4 respondents, the usability problems that found is decreasing because the children keep revealing the same problem. One respondent
was able to found 45,45% usability problems, and 85% usability problems found by only 4 respondents. While 100 % usability problems can be found by 9 respondents. Moreover, the result of usability test analysis and recommendations for improvement of Candy Factory are explained.
Keywords: usability, number of respondent, thinking aloud, educational game, children
Faculty of Engineering, Universitas Gadjah Mada
2015-09-29 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/7510
Forum Teknik; Vol 36, No 1 (2015)
eng
Copyright (c) 2015 Forum Teknik
oai:jurnal.ugm.ac.id:article/7511
2015-10-01T07:06:07Z
mft:ART
"150102 2015 eng "
0216-7565
dc
Rancang Bangun Kontruksi TEG (Thermoelectric Generator) pada Knalpot Sepeda Motor untuk Pembangkitan Listrik Mandiri
Sugiyanto, S
Umam, Muh Tarum N
The utilization of waste heat from exhaust gas in motorcycle is a typical application of electricity generation using thermoelectric generator (TEG) technology. The construction of TEG that mounted at outer surface of motorcycle exhaust pipe will depend on quality of three
main components: the support structure, the thermoelectric module, and the heat dissipation system. The components will influence heat conversion to electricity so those are must be well designed to required heat transfer process from the surface of exhaust pipe to hot side and cold side of TEG.
The methods that used are designing good construction of TEG with Aluminum material that will to be installed properly on surface of motorcycle exhaust pipe without disturbing the
heat transfer from the surface to the both side of TEG. This design allows the TEG can be assembled easily without damaging the TEG module itself too. Then before testing on
motorcycle, the construction design run testing by the heat transfer software to observe how much heat that generate from the surface and transferred to the both side of the TEG. TEG module used is the HZ-14 which has dimensions of 6.25 cm x 6.25 cm and the selected motorcycle is a 150 cc motorcycle sport type.
The result of TEG construction consists of two main parts, the holder of TEG modules for HZ -14 and a heat sink that adapted to the shape of exhaust pipe motorcycle. The heat sink is also related to the cold sink is made from aluminum fins placed on the cold side of the TEG. The test results generated electrical voltage output indicates that the voltage will begin to be raised shortly after the motorcycle is turned on ,that is about 10 seconds shortly after the motorcycle turned on the voltage generated is 11 mV at idle engine speed range from 1800 to 2000 rpm. The voltage will show stability at 664-665 mV after 15 minutes the motorcycle turned on at engine speed of 4500 rpm .
Keywords: heat sinks, motorcycle exhaust pipe, energy conversion, thermoelectric generators,
power generation
Faculty of Engineering, Universitas Gadjah Mada
2015-09-29 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/7511
Forum Teknik; Vol 36, No 1 (2015)
eng
Copyright (c) 2015 Forum Teknik
oai:jurnal.ugm.ac.id:article/11529
2016-07-20T01:24:09Z
mft:ART
oai:jurnal.ugm.ac.id:article/11530
2016-09-22T06:41:32Z
mft:ART
"160606 2016 eng "
0216-7565
dc
Retrofitting Sambungan Kolom-Balok Beton Bertulang Ekspansi Planar Segitiga dengan Variasi Ukuran
Hernowo, Sigit
Magister Teknik Sipil, Program Pascasarjana Universitas Atma Jaya Yogyakarta
Lisantono, Ade
Magister Teknik Sipil, Program Pascasarjana
Universitas Atma Jaya Yogyakarta
Highly seismic activities in Indonesia, that is followed by a lot of high magnitude earthquakes, make awareness of the people to anticipate the damage that caused by this disaster. The Codes of earthquake have changed and are accompanied by the change of seismic region. There must be some efforts to improve the existing building structure. One of the efforts is retrofitting the beam-column joint which is the weakest element of structure in the building when subjected to earthquake loading. Four beam-column joint reinforced concrete specimens, namely SJC, SJ-01, SJ-02, and SJ-03, made of normal concrete and plain reinforcement were tested in this experimental program. Beam with 150 mm width, 250 mm high, and 1500 length be jointed with column that has section area of 250 mm x 250 mm, and 1750 mm length. The specimens of SJ-01, SJ-02 and SJ-03 were retrofitted by triangular voute in lower side of the beam in the beam column joint region with 125 mm, 187.5 mm, and 250 mm side length, respectively. All specimens are tested with cyclic loading using hydraulic actuator. The results show that the increasing strength of specimen SJ-01 and SJ-03 compare to the reference specimen were 12.74% and 10.29%, respectively. While the strength of specimen SJ-02 a little bit decreases
compare to the reference specimen.
Keywords: beam-column joint, reinforced concrete, retrofitting, voute, cyclic loading.
Faculty of Engineering, Universitas Gadjah Mada
2016-01-06 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/11530
Forum Teknik; Vol 37, No 1 (2016)
eng
Copyright (c) 2016 Forum Teknik
oai:jurnal.ugm.ac.id:article/11534
2016-09-22T06:41:32Z
mft:ART
"160606 2016 eng "
0216-7565
dc
Konsep Hulu-Teben pada Permukiman Tradisional Bali Pegunungan/Bali Aga di Desa Adat Bayung Gede Kecamatan Kintamani Kabupaten Bangli, Bali
Tri Adiputra, IGN
S3 Teknik Arsitektur dan Perencanaan FT UGM
Sudaryono, S
Wiyono, Djoko
Sarwadi, Ahmad
The research tries to explain the specific Hulu-Teben concept of Bayung Gede custom village as dialog result between the normative Hulu-Concept as a background knowledge with the phenomena of spatials system anomaly at Bayung Gede custom
village.
The research utilized phenomenology paradigm of Hussrel where Hulu-Teben of custom village in general takes a role as background knowledge. It’s discussed with the macro spatial system of Bayung Gede custom village to show the uniqueness spatial as the architectural anomaly of mountain village. Deepening study of the anomaly above was done in gaining the community’s social-culture background/their local wisdom as the
transcendental consciousness. Further Hussrel emphasizes that the highest transcendental peak is obtained by doing the three steps of reduction, i.e : (i) a phenomenological reduction of all related information to get some empirical themes, such as ; (a) Upperengga Mala and (b) Tegak Paumahan, (ii) the eidetic reduction of the three empirical themes to generate the architecture concept and (iii) the final reduction is transcendental reduction to discovery the architecture local theory. In the context within the research of Bayung Gede custom village, the aim is only focused at the architecture concept.
The research results show that Hulu-Teben concept of Bayung Gede custom village has adapted Hulu-Teben in general shown by existence of Para Kahyangan Desa (custom village religious indicator) as the appreciating expression form for community’s ancestor. On the other hand, there are some spatial anomalies as an additional and enriching the general Hulu-Teben concept. Those are related with their local wisdom, it’s not only for appreciating their ancestors (upper level of human being) but it’s also for : (i) the former king of Jaya Pangus and the queen of Ulun Danu Batur (upper level of human being but they’re not ancestors), (ii) the equal level of human being and (iii) lower level of human being (the plantation, the animal and other creature).
Keyword : Hulu-Teben spatial “anomalies” Bayung Gede, Custom Village
Faculty of Engineering, Universitas Gadjah Mada
2016-01-06 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/11534
Forum Teknik; Vol 37, No 1 (2016)
eng
Copyright (c) 2016 Forum Teknik
oai:jurnal.ugm.ac.id:article/11930
2016-09-22T06:41:32Z
mft:ART
"160102 2016 eng "
0216-7565
dc
Syaiful, S
Herianto, H
Tool Condition Monitoring system (TCM) is an application for monitoring condition of tool where mounted on a CNC machining system. A good of TCM application is that which is capable of features mapping the signals obtained from the sensor system to appropriate class (tool condition). This study aimed to optimizing the dataset from the sensor signal in the previous study, with the features selection or features reduction, and with optimization parameters decision-making system to separate the two conditions,that is normal tool and breakage tool.
There are 1800x282 dimensional data, where obtained from the two transformed feature in the time domain and frequency domain. The results of the transformation are selected features by comparing three methods of feature selection that is Fishers Discriminant Ratio (FDR), Sequential Forward Selection (SFS). The result of selected method is L-SVM, and there are selected 10 best features by FDR to be input to the neural network backpropagation method. The system had accuracy test 97,8% in normal conditon of tool and 98,9% in breakage condition of tool. Reduction feature by Principal component Analysis (PCA) it's using from selected feature. It takes for understanding how spindle rotate influence to classification the tool condition.
Keywords: Optimization, Feature Selection, Feature Reduction, Tool Condition Monitoring, Neural Networks
Faculty of Engineering, Universitas Gadjah Mada
2016-01-06 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/11930
Forum Teknik; Vol 37, No 1 (2016)
ind
Copyright (c) 2016 Forum Teknik
oai:jurnal.ugm.ac.id:article/12355
2016-07-25T06:43:42Z
mft:ART
oai:jurnal.ugm.ac.id:article/12398
2016-09-22T06:41:32Z
mft:ART
"160106 2016 eng "
0216-7565
dc
Pengembangan Computer Aided Design(CAD) Warna Batik
Rif’ah, Mega Inayati
Departmen Teknik Mesin dan Industri, Universitas Gadjah Mada
Wibisono, Muh. Arif
Departmen Teknik Mesin dan Industri, Universitas Gadjah Mada
One of the problem faced by Indonesian batik industry is about environment issue. This is because batik industry uses synthetic dyes on their coloring process. The use of natural dyes for batik makers deemed to be impractical and has many disadvantages, including lack of bright colors, longer process, and more expensive. Therefore, this research aims to reduce the use of synthetic dye in batik design process, by developing computer aided batik color design (CAD for batik color). This development includes a method for predicting color, methods and algorithms used in the CAD and measurement of its usability level. The results showed that the method can predict color with average error rate of 5% (< 10% tolerance error established), CAD for batik color has been able to run as the concept of batik making, and its usability average value is 3.86. Therefore, it is concluded that CAD for batik color has usability aspects and can be implemented as a design batik color tool that can be operated by its user.
Keywords: batik, creative, design, CAD, color
Faculty of Engineering, Universitas Gadjah Mada
2016-01-06 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/12398
Forum Teknik; Vol 37, No 1 (2016)
eng
Copyright (c) 2016 Forum Teknik
oai:jurnal.ugm.ac.id:article/12399
2016-09-22T06:41:32Z
mft:ART
"160106 2016 eng "
0216-7565
dc
Penentuan Strategi Saluran Distribusi Berdasarkan Karakteristik Produk Sukses
Nurisusilawati, Isnaini
Program Studi S2 Teknik Industri, Departemen Teknik Mesin dan Industri, FT UGM
Subagyo, S
Departemen Teknik Mesin dan Industri, FT UGM
This research was done to determine the distribution channel strategy based on characteristics of successful products. Totaling 100 products from 15 types of product categories were used as a research object. Independent variables consisted of product characteristic variables and distribution channel variable. Product characteristic variables consisted of price, safety, feature, product performance, service, convenience, brand, and design. Coverage was used as adistribution channel variable and market share as a dependent variable. Ordinary Kano and Modified Kano were used to construct some mathematical models. Each model then was evaluated with coefficient determination test. The mathematical model constructed in this study has R2 value 16,26%. Coverage included in one-dimensional requirement which means adding value to coverage variable will linearly increase market share.
Keyword: channel distribution strategy, product characteristics, Kano model, mathematical model.
Faculty of Engineering, Universitas Gadjah Mada
2016-01-06 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/12399
Forum Teknik; Vol 37, No 1 (2016)
eng
Copyright (c) 2016 Forum Teknik
oai:jurnal.ugm.ac.id:article/13124
2016-09-22T06:41:19Z
mft:ART
oai:jurnal.ugm.ac.id:article/13125
2016-09-22T06:45:34Z
mft:ART
"160102 2016 eng "
0216-7565
dc
Pengaruh Jenis Edukasi Terhadap Performansi Pengemudi dengan Karakter Risk Taker
Rezalti, Dian Tiara
Pascasarjana Teknik Industri, Fakultas Teknik, Universitas Gadjah Mada
Jalan Grafika No.2, Kampus UGM, Yogyakarta 55281
The Government has made traffic laws and regulations to create a motor vehicle safety and in order to reduce the number of fatal and serious injuries that occur in motor vehicle crashes every year. However, it’s not much effecting to diminish numbers of road accident causing by lack of knowledge, insights, driving experience, and often to take a risk. This study aimed to identify the effective education in safety driving to improve the driver’s performance which has a risk taker characteristic.
This study was conducted in a laboratory simulation of ergonomics with the respondent amounted 30 people aged 18-25 years and classified into three groups: 10 respondents are educated by using a module, 10 respondents are educated by watching a video, and 10 respondents directly practice using a simulator. Holt & Laury’s Questionnaire is used to knowing Risk Attitude of respondents.
This study showed that video education is the most effective education to reduce a numbers of driving perform interference for those man and woman’s respondents and afterwards followed by module’s education and the last intended by without education
Keywords: risk taker, impaired driving performance, performance time on a task
Faculty of Engineering, Universitas Gadjah Mada
2016-01-06 00:00:00
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/13125
Forum Teknik; Vol 37, No 1 (2016)
eng
Copyright (c) 2016 Forum Teknik
oai:jurnal.ugm.ac.id:article/41722
2018-12-10T04:59:18Z
mft:ART
"181210 2018 eng "
0216-7565
dc
Pengaruh Sambaran Petir Langsung pada Variasi Ketinggian Menara Vertikal terhadap Tegangan Induksi yang Dirasakan oleh Jaringan Distribusi Disekitarnya
Utama, Budi
Jurusan Teknik Elektro STTNAS
If the top of telecommunication towers or radio or television have been struck by a lightning, distribution lines in the vicinity of those would immediately underwent an induced overvoltage impuls. Magnitude of the induced voltage impuls depend on how tall the tower above ground. Such lightning stroke is type of an indirect lightning stroke which is always appear in the problem of the induced overvoltage phenomenon on overhead distribution lines. Examinant of the effects of various height of the tower and the distance parameter between the tower and the route of distribution line on rate of rise of the induced voltage of the lightning is undertaken in this paper, and the computer is as its simulator. The method of the simulation of a lightning stroke in the vicinity of distribution line and its formulation is adopted from a simulation model that has been_ proposed by Ishii et al. (1994) and Eriksson et al (1982) respectively. The result of the simulation show that presence of a vertical tower structure in the vicinity of the distribution line route will result in a lower induced voltage (on the order of 13.4 %), and effect of tower height parameter is very significant for the assumed conditions. It is proposed that this significant parameter be studied extensively in order to predict the induced voltage accurately.
Faculty of Engineering, Universitas Gadjah Mada
2018-12-10 00:00:00
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https://jurnal.ugm.ac.id/mft/article/view/41722
Forum Teknik; Vol 31, No. 3, September 2007
eng
Copyright (c) 2018 Forum Teknik
oai:jurnal.ugm.ac.id:article/58235
2020-07-29T02:51:18Z
mft:ART
"060501 2006 eng "
0216-7565
dc
Laju Reaksi Hidrolisis Herbisida Glifosat di Tanah Jenuh Air
Rahayuningsih, Edia
Jurusan Teknik Kimia, Fakultas Teknik UGM
Mindaryani, Aswati
Jurusan Teknik Kimia, Fakultas Teknik UGM
Mukti, Mukti
Mahasiswa Jurusan Teknik Kimia, Fakultas Teknik UGM
Radjagukguk, Bostang
Jurusan Ilmu Tanah, Fakultas Pertanian UGM
The objectives of the research were to find out the parameters of the hydrolysis reaction rate (k,,) and partition coefficien (Kr) of glyphosate herbicide in saturated soil system, to identify the variables affecting those parameters, and to develop the empirical equations corelating those parameters to the pertinent variables.
The experimental work or physical simulation in laboratory was conducted in a batch reactor. The sterilized soil 5 gram put into a 1000 cm3 of Erlenmeyer glass and 500 cm3 of glyphosate solution with 8 g/1 concentration was added. The Erlenmeyer mouth was covered with plastic film and the entire Erlenmeyer surface was covered with aluminium foil to minimize vaporization and photolysis reaction. The solution was mixed continuously with magnetic stirrer. At the initial time and selected time intervals, 5 cm3 of the samples were taken with syringe. The samples were centrifuged and filtered, 1 cm3 of the filtrate were analyzed its glyphosate concentration with UV- VIS. The experiments were conducted for various soil types, and the empirical correlation between the hydrolysis reaction rate (k,,) and partition coefficien (Kr) with the affecting variables can be developed.
Based on the laboratory data and the simulation of mathematical model, it could be concluded that the empirical correlation between the Kr and kh values with the affecting variables could be represented in the equations:
Kr =11.035 (%organic matter) + 0.25 (%clay mineral) mL gram
kh =1.0810 (%organic matter) + 1.5310-5 (%clay mineral) min-1
Faculty of Engineering, Universitas Gadjah Mada
2020-07-29 09:51:18
application/pdf
https://jurnal.ugm.ac.id/mft/article/view/58235
Forum Teknik; Vol 30, No 2 (2006)
eng
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