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INDONESIA
Majalah Forum Teknik UGM
Published by Universitas Gadjah Mada
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
Arjuna Subject : -
Articles 74 Documents
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Perubahan Hunian Tradisional Suku Dayak Bukit di Kalimantan Selatan (Kajian Perubahan dengan Metode Etnografi) Bani Noor M; Tony Atyanto D; Arya Ronald; Heddy Shri Ahimsa-Putra
Forum Teknik Vol 35, No 1 (2013)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

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.
Kenyamanan Visual Ruang Kerja Kantor Nurul Jamala
Forum Teknik Vol 35, No 1 (2013)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

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
Spektrum Frekuensi Sinyal EEG Terhadap Pergerakan Motorik dan Imajinasi Pergerakan Motorik Endro Yulianto
Forum Teknik Vol 35, No 1 (2013)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

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
Parental Control Model for High School E-Learning Sri Suning Kusumawardani; Ridi Ferdiana
Forum Teknik Vol 35, No 1 (2013)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

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
Studi Variabilitas Isotop Airhujan Sebagai Fungsi Elevasi untuk Mendapatkan Merapi Meteoric Water Line MMWL Agus Budhie Wijatna; S Sudarmadji; S Sunarno; Heru Hendrayana
Forum Teknik Vol 35, No 1 (2013)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

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 .
Latar Ombo, Fungsi dan Konsep Ruang Publik di Desa Tieng Kabupaten Wonosobo Heri Hermanto; Achmad Djunaidi; S Sudaryono
Forum Teknik Vol 35, No 2 (2013)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

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
Pakarangan di Permukiman Desa Singengu Mandailing Julu, Sumatra Utara Cut Nuraini; Achmad Djunaidi; S Sudaryono; T Yoyok Subroto
Forum Teknik Vol 35, No 2 (2013)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

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
Rancangan Perumahan dan Interaksi Penghuni dengan Sekitar Studi Kasus : Perumahan Menengah Atas di Yogyakarta Maria Immaculata Ririk Winandari; Bambang Hari Wibisono; Achmad Djunaidi; Heddy Shri Ahimsa-Putra
Forum Teknik Vol 35, No 2 (2013)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

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
Penjejak Pose Wajah Otomatis pada Sistem Pengenalan Wajah Kartika Firdausy
Forum Teknik Vol 35, No 1 (2013)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

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%.
Kebijakan Maintenance Berbasis Analisis Model Kerusakan Studi Kasus Pengoperasian & Pemeliharaan Turbin Uap di Pabrik Gula Saptiaji Harnowo; S Sunarno; S Sihana
Forum Teknik Vol 35, No 2 (2013)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

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

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