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Risanuri Hidayat
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Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada Jl. Grafika No 2. Kampus UGM Yogyakarta 55281
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Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Published by Universitas Gadjah Mada
ISSN : 23014156     EISSN : 24605719     DOI : 10.22146/jnteti
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Topics cover the fields of (but not limited to): 1. Information Technology: Software Engineering, Knowledge and Data Mining, Multimedia Technologies, Mobile Computing, Parallel/Distributed Computing, Artificial Intelligence, Computer Graphics, Virtual Reality 2. Power Systems: Power Generation, Power Distribution, Power Conversion, Protection Systems, Electrical Material 3. Signals, Systems, and Electronics: Digital Signal Processing Algorithm, Robotic Systems and Image Processing, Biomedical Instrumentation, Microelectronics, Instrumentation and Control 4. Communication Systems: Management and Protocol Network, Telecommunication Systems, Wireless Communications, Optoelectronics, Fuzzy Sensor and Network
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 11 Documents
 1   2 
Search results for , issue "Vol 2 No 1: Februari 2013" : 11 Documents clear
Analisa Teknologi Informasi dalam Mekanisme Pemasangan Iklan Sebagai Jaminan Pendapatan dengan Pendekatan Teori Computational Advertising (Studi Kasus Detikcom) Taufik Rendi Anggara; Suhardi
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 1: Februari 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Internet is one of media of communication with the very rapid development. In Online Advertising company based in particular on Contextual Advertising for revenue assurance (Revenue Assurance) is higher than ever needs to be analyzed in depth theoretical approach is also relevant in order to get results and to solve problems.
Evaluasi Kualitas Layanan Billing Information System Rumah Sakit dengan Metode ServQual (Studi Kasus Pada RSUD Dr. Murdjani Sampit Kabupaten Kotawaringin Timur Provinsi Kalimantan Tengah) Abertun Sagit Sahay; Eko Nugroho; Wing Wahyu Winarno
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 1: Februari 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

To meet customer satisfaction, organizations must figure out what customers want. Customer satisfaction is one of the factors or of the measure of success for any development and implementation of information systems in an organization. Dr. Murdjani Hospital of Sampit, Kota Waringin Timur Regency of Central Kalimantan Province develops and implements a Billing Information System service which integrates all service activities into a system that records all financial transactions. By performing this measurement, the hospital can figure out every single aspect of the service needing special attention for the purpose of improvement, and all parties are satisfied with the services provided. Evaluation of quality of Billing Information System service of Dr. Murjani Hospital using ServQual method has 5 (five) dimensions of customer satisfaction that includes tangible, reliability, responsiveness, assurance and empathy. The results are the 5 (five) dimensions each of which affects significantly customer satisfaction, and they are reliability tangible, assurance, empathy and responsiveness.
Rancang Bangun Sistem Pendukung Keputusan Pemilihan Mahasiswa Berprestasi Menggunakan Metode AHP dan Promethee Julianto Lemantara; Noor Akhmad Setiawan; Marcus Nurtiantara Aji
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 1: Februari 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Student affair often has difficulty in determining students that are sent to event because many outstanding students at institution. So far, the sending of students is still intuitive and subjective. Therefore, this research aims to design and build a decision support system that can provide advice to determine the best student that will be sent to the event. In this research, the method of decision support system that is used is combination of AHP and Promethee. In implementation, AHP is executed to get criteria weight. After that, Promethee is executed to determine the order of candidates priority. The purpose of combination is to increase the quality of advice about the selection of students. The result of research shows that with decision support system that is built, student affair can choose the students that are sent to event more quickly, accurately, and objectively.
Tinjauan Interpretatif Terhadap Aspek-Aspek Institusional dalam Implementasi Layanan Elektronik: Studi Kasus PT. XYZ Agung Darono; Lukito Edi Nugroho; Warsun Najib
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 1: Februari 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

This research aims to determine what institutional aspects that can influence the organization to implement electronic services. This research used qualitative-interpretive research method with single case study research strategy. The findings of this research were: (1) the type of institutional pressures (normative / mimetic / coercive) that surround the organization and the business impact of these pressures determines the response / action of organization isomorphism; (2) the organization uses its institutional logic to perform isomorphism and the result was the decision to develop an electronic service as one of the steps to face existing institutional pressures. This research also proposed a framework which are expected to be used by an organization to identify the institutional aspects related to the implementation of electronic services as a mechanism to respond to these pressures by appropriate isomorphism action.
Analisis Perubahan Parameter Number of Signals Averaged (NSA) Terhadap Peningkatan SNR dan Waktu Pencitraan pada MRI Dwi Rochmayanti; Thomas Sri Widodo; Indah Soesanti
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 1: Februari 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

A study about the influence of NSA shift to SNR to identify the existence of NSA shift to SNR and scan time had performed. The study aims to determine the alteration value of SNR when NSA was changed for every number and to obtain the NSA value which has more optimum image quality. The study was performed in Telogorejo Hospital at Semarang with MR modalities AirisII Hitachi 0.3 tesla by shifting NSA from 1 to 5 in cervical vertebrae (neck) sagittal T1 weighted with spin echo sequence. The SNR of five images were calculated with Matlab tool. SNR value was obtained by measuring the ROI at body of vertebra, spinal cord area and discus intervertebra to attain the signal average value. Experiment results show that the greater the NSA, the SNR is better and scan time is longer. SNR of the organ corpus, medulla spinalis and diskus intervertebra is increases from NSA 1 to 2 is 51%. When the NSA is raised to 3, the SNR increase is 89%, for NSA 4 the SNR increase is 99%, for NSA 5 the SNR increase is 102% . To get an SNR up to 100%, the NSA 4 is used. Meanwhile, to get images with good SNR and imaging duration is not long, the NSA 3 is used.
Rekonstruksi Objek 3D dari Multiple Images Rachmawati; Risanuri Hidayat; Sunu Wibirama
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 1: Februari 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

3D reconstruction is a task of recovering 3D geometry and color information. There are two categories of 3D object reconstruction: active method, 3D model acquisition can be performed by laser scanner or structured light. Passive methods, reconstruct 3D models by image sequences from a single camera or multiple cameras. Object scanning often demand expensive equipment and special skill to operate. As a simple and low cost approach, 3D reconstruction based images became more popular among the researches. In this study apply passive reconstruction technique, the reconstruction of 3D objects made using images taken from different viewpoint leading to the same object using a digital camera.To determine the corresponding points of the two views used epipolar geometry and Direct Linear Triangulation algorithm (DLT). All required parameters are extracted from the image itself, without any calibration of the camera before. The reconstruction process can divided into four part: first, feature point extraction. Second estimate the fundamental matrix from point correspondences, third compute the camera matrix, and the end compute 3D point from image points. All the required parameters are recovered from the images. As objects of experiment used a miniatur of a statue. Experiment result show the residual error from estimation fundamental matrix is 9.9051 x10-04, and reprojection error 1.714 x 10-03 pixel. Visually, the reconstructed 3D model reseamble the shape of the original object.
Penapisan Artifak Logam pada Citra CT-scan dengan Spatial Filter Andrey Nino Kurniawan; Thomas Sri Widodo; Indah Soesanti
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 1: Februari 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

The metal artifact where are produced on CT image can covered some area near metal artifact so it obstructed to define pixel value (CT number), which in turn it is dificult to define between normal and pathological tissues on a-CT image so metal artifact are need to reduce for help a diagnose. This research’s aim was performed to reduce metal artifact on a-CT image.The method of this research is used spatial filtering with convolution technique where it aplicated to a-CT image with metal artifact and use image processing tool. A phantom with and without metal was scanned for to get an image data, and so CT image from patient where it have a metal artifact. The image data are filtering by seven filter where are different oneanother. Mean square error (MSE) was calculated to assessment performance of filters and a subjective assessment by the practitioners of CT-scan.Metal artifacts are generally formed from 2-3 pixels and has the shortest distance between metal artifacts beam of 2-3 pixels so that the filters used have a filter window size is 5 pixels. The results of filtered image in general has decreased in quality, and the results of assessment of respondents, the filter that has been chosen by the respondent is filter 2 is as much as 29.03% and 0,010703 of MSE value. Therefore we can conclude that the filter 2 is the best filter of the seven filters are used to reduce metal artifacts and still maintain the image quality of CT-scan on visualize organ that can still be used for diagnosis.
Akuisisi Data dan Pengolahan Isyarat Elektrokardiograf Menggunakan Modul USB Dataq DI-148U Henry Sulistyo; Thomas Sri Widodo; Maesadji Tjokronagoro; Indah Soesanti
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 1: Februari 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Heart signal data acquisition for the purpose of research is still an obstacle when using the standard ECG equipment from the manufacturer. The problem is the expensive equipment and the conversion of images into digital data. By using instrumentation amplifiers and electronic components in the market can be realized a simple ECG prototype by using interface Dataq DI-148U USB module for cardiac signals data acquisition.In this study, single channel ECG prototype realized with twelve leads by manually selected. Tests using five subjects that compared the results with standard hospital ECG equipment.From ECG prototype tests each sub section, the results are in accordance with the planning. The use of adhesive floating electrode type showed a smaller noise. IIR digital filter effectively reduces noise with SNR above of 20 dB and baseline wander at frequency cutoff 0.95 Hz. The threshold method is capable of detecting the peak R-R interval well to calculate the heart rate.
Analisis Skenario Permintaan dan Penyediaan Energi Listrik pada Sistem Interkoneksi Jawa-Madura-Bali 2050 Rahmat Adiprasetya Al Hasibi; Sasongko Pramono Hadi; Avrin Nur Widiastuti
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 1: Februari 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Scenario analysis of electricity supply to meet the demand of electricity is done by the support of LEAP software. Developed LEAP model used the base year of 2010 and the end year of 2050. In the model, scenario consisted of demand and supply side scenarios. In the demand side, designed scenario consisted of the reference and the conservation scenario. The reference scenario used to describe the demand of electricity without any introduction of conservation strategy. While in the conservation scenario, the strategy of energy conservation was integrated in the model. In the supply side, designed scenario consisted of the reference, the optimized, and the reduction of CO2 emission scenario. The reduction of CO2 emission scenario consisted of the implementation of nuclear power plant and renewable energy power plant. The result of the simulation showed that by the implementation of energy conservation strategy the demand of electricity in JAMALI system can be reduced by 20% compare to the reference scenario. The implementation of nuclear power plant can be used to reduce the CO2 emission with the growth of 3.26% per year. In the other hand, the implementation of renewable energy will reduce the CO2 emission with the growth of 3.14% per year.
Evaluasi Kinerja IMAG pada Pembangkit Listrik Tenaga Mikrohidro Cokro Tulung Kabupaten Klaten Mahalla; Suharyanto; M. Isnaeni B. S.
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 1: Februari 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

IMAG (Induction Motor as Asynchronous Generator) or induction motor that is used as an asynchronous generator having been widely used in micro-hydro Power Plant (MHP)usually in small capacity, i.e below 100 Kw. The reason for the widespread popularity of induction generator is owing to it’s capability to generate the power from variable speed as well as constant speed prime movers, low unit cost, reduced maintenance, rugged and brushless rotors, absence of a separate d.c. source for excitation, absence of moving contacts, inherent overload protection, improved performance due to low transient impedance, natural protection against short circuit, there are many on the market etc. Their main disadvantage is poor voltage and frequency regulation under varying load and speed. Imag performance evaluation needs to be analyzed including it is voltage stability analysis and frequency analysis in expenses. Based on the analysis of the system in general, efficiency is 47,38% total imag and positions the turbine room and Imag are still far from flood-free area, so a high fall (head) can be increased from 1 m up to 2.21 m, this can increase the potential and generated power of 82.56% Based on the analysis of the daily load, major load changes affect changes in voltage and frequency output of the imag, this was due to the load current controller can not work fast (slow response) to divert the major load changes to the load apparent (ballast load). There are several methods that can be done to control the voltage and frequency, one method of which is to adjust the load (dummy load). The results of the analysis will be in the form of recommendations for improvement so that the MHP and the frequency of the voltage instability can be obtained to ensure the quality of the electricity generated by Imag at MHP system.

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