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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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INDONESIA
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 644 Documents
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Sinkronisasi Sensasi Pendengaran dan Visual di dalam Dunia Simulasi Komputer Sentagi S. Utami; Mojtaba Navvab; Randy F. Fela
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 2: Mei 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Current application of virtual environment synthesized by computer simulation still focuses on generating visual cues, while auditory cues has not yet been optimized to create individual movements within the virtual space. Auditory cueing is limited to the ability in detecting the presence of a sound source without further perception. Auralization of variety of spaces with the impact of a variety of architectural elements were synthesized. The auralization data were produced using current computer-simulation technique where both visual and acoustics properties of the room boundaries are considered. Noticeable differences in the auditory cognition of the virtual spaces are measured through the use of subjective evaluation. The acoustical quality are also evaluated utilizing several objective acoustic measures. Diffuser panels were able to increased ability of sound localization up to 12.5% out of the 40 respondents. These panels also increased the speech intelligibility quality, indicated both by the C50 which increased by 89% with 97.5% of respondents approved this condition. Analysis of the subjective and objective measures indicates to what extent the alteration of the simulation is required to create a noticeable auditory cues that enhance the auditory and visual sensation of the virtual space.
Perancangan Sistem Cluster Server untuk Jaminan Ketersediaan Layanan Tinggi pada Lingkungan Virtual Yudi Restu Adi; Oky Dwi Nurhayati; Eko Didik Widianto
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 2: Mei 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Computer based services are now used in various fields, such as business, health, and education. The objective is to improve the performance of the company, institution, or organization. Services and data are stored in a server machine. Therefore, the server machine becomes an important thing that supports the availability of services, beside network infrastructure and electricity. The server machine may have hardware failure or software crash. The server machine can be down because of a power failure, human error, or disaster. The server machine sometimes must be turned off for upgrades or maintenance purposes. When a server is down, services running on the server will stop and important data can be lost. The objective of this research is to build a server cluster system that supports high availability services and data integrity over a virtual environment. The result of this research is a cluster server system that supports high availability services over the virtual environment and guarantee data integrity using server virtualization Proxmox VE 3.4 on two computer machines, FreeNAS x86 9.2.1.9 as a NAS server, two units of the Cisco Catalyst 2960 switch, and DRBD for data synchronization.
Sistem Deteksi Posisi Gajah Berbasis Frekuensi Radio Agus Urip Ari Wibowo; Rizki Dian Rahayani; Arif Gunawan; Wahyuni Khabzli
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 2: Mei 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

This paper is motivated by the human-elephant conflict that often occurs due to the narrowing of the elephant habitat caused by industrial and residential interests. In addition, the habitat breadth and the lack of elephant keepers also becomes a consideration. In this paper, we propose an elephant detector using radio frequency. The detector using KYL-200L as transmitter is mounted on the elephant necklace and the sensor nodes as transceivers are installed at some point in the outer boundaries of the elephant habitat. When an elephant is moving within the sensor node radius, the node will send information to the server to be displayed on surveillance computer, and an alert will be sent via SMS to the elephant keeper. The result shows that the maximum communication distance range obtained is 190 m, depending on the propagation and geographical location of the nodes. The average delay of SMS sending is 4.74 seconds depending on providers’traffic service. The differences on the elephant position detection caused by SMS delay are insignificant compared to the radius of the nodes and the elephant habitat.
Identifikasi Pengaruh Lintasan-Jamak pada DVB-T2 Berdasar Uji Penerimaan Siaran Budi Setiyanto; Risanuri Hidayat; I Wayan Mustika; Sunarno
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 2: Mei 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

In many countries, migration from analog to digital in television (TV) broadcasting technology is being in progress. Indonesia has adopted DVB-T2 (Digital Video Broadcasting-Terrestrial Second Generation) as the standard of free-to-air digital TV (DTV) broadcasting system. Frequency selective fading due to multipath propagation affects the reception of this terrestrial radio communication system. This paper presents those effects on reception of DVB-T2 signal from the Yogyakarta transmitting stations. The presence of these effects were identified experimentally, based on several received-signal describing quantities obtained from some field-observations on indoor/outdoor stationary/mobile receptions. Examples of these quantities are spectrum flatness measurement (SFM), signal quality (SQ) versus signal intensity (SI), power level (P) versus carrier-to-noise ratio (CNR), CNR versus modulation error ratio (MER), local variation of reception-success, and received data packet. Several numerical examples are: (1) SFM achieved as high as about 0.7 and 0.9 for indoor and outdoor, respectively, and (2) spatial-probability of reception-success at an indoor receiver location varied from 40,06 % to 81,85 %, approximately.
Pemrosesan Citra Side Scan Sonar untuk Pemetaan Dasar Laut Pelabuhan Benoa Henry M. Manik; Liva Junaedi; Gentio Harsono
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 2: Mei 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Detection of seabed can be obtained with a high resolution using side scan sonar instrument. This instrument also provides geospatial information of underwater target. This paper aims are to visualize and to interpret side scan sonar imagery both qualitatively and quantitatively, to analyse acoustic backscatter of seabed, and to perform processing characteristics of sonar signal using wavelet transform. Side scan sonar data are processed through the geometric correction to establish the actual position in the image pixel. The location of research study is Benoa Port, Bali Indonesia. The sonar surveys consist of several track lines survey with operating frequency of 325 kHz. The seabed texture consists of gravel with backscatter value range from 13824 mV to 23680 mV and 8832 mV to 13312 mV for sand, sediment ripples of 17792 mV to 32640 mV, dredging seabed of 8000 mV to 19330 mV, texture of mound area has 32640 mV, and rocky outcrop has 14845 mV to 23552 mV. The results analysis of the signal characteristics using wavelet transform generally defines the location of peaks and valleys of the backscatter amplitude for each texture. The peak magnitude of each texture in red color indicates the intensity of the seabed texture is more rough, complex and solid, while the seabed texture is relatively flat and soft physic material has a low magnitude the value in blue color.
Teknik Koreksi Posisi dan Bentuk Objek Citra dalam Basis Waktu-Bilangan Gelombang Is Mardianto
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 2: Mei 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

In the case of radar imagery, the image is the result of convolution between the wave source and the reflection coefficient of the object, which of them is the amount of electrical conductivity and dielectric constant of the object. Image is produced from the concept of scattering, where the absence of scattering events will not produce radar image. The image of the measurement results usually do not represent the position and shape of the actual object condition. To restore the image to the actual condition, a proper technique is needed.This study presents the technique of image correction in the base period and the number of waves (T-K), on the conditions of the object in the form of sloping soil layers and diffraction object in the form of metal that is round. Image correction on the basis of T-K is conducted by performing Fourier transformation on the original image (wave field F (t, k)) in the space dimension x to dimension k that generates a field new wave F (t, k). Then, wave field F (t,k) will be corrected for each wave number by converting it first into a new wave field Q (τ,k), then the wave field Fourier transformed to obtain the corrected section q (τ,x)Results of image correction on the basis of the T-K gives the results of the position and shape of the image that is appropriate based on the actual conditions. This can be ascertained because of the imagery used is a synthetic image of the position and the initial condition is set and known in advance.
Algoritme Genetika untuk Peningkatan Prediksi Kebutuhan Permintaan Energi Listrik Oman Somantri; Catur Supriyanto
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 2: Mei 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Predicting the demand of electrical energy with a high degree of accuracy is expected. Application of an appropriate model using exact method will greatly affect the level of accuracy result. Neural Network (NN) and Support Vector Machine (SVM) models are used to predict the needs of electricity demand. Those models have weaknesses. Both are still difficult in determining the value of parameters used, thus, affecting the level of accuracy. Genetic Algorithm (GA) is proposed as a method to optimize the value of NN and SVM parameters in predicting the demand of electrical energy. The result shows that the NN and GA models have a better accuracy than the SVM and GA.
Pemodelan Awal Ground Penetrating Radar dengan Metode Discontinuous Galerkin dan PML Berenger Pranowo
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 2: Mei 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

This paper discusses the development of Discontinuous Galerkin method, which has both linear shape function and weight function, for modeling Ground Penetrating Radar (GPR) in heterogeneous media. The triangular meshes are used due to their flexibility to deal with complex geometries. The Berenger Perfectly Matched Layer (PML) is used as absorbing boundary condition at the truncation boundaries. The numerical results of the DG method are compared with the exact solutions and the numerical results of FDTD method and the comparisons show that DG method has better accuracy than FDTD method and more stable for long time simulation. The simulation results of GPR show that the PML works well. Propagating waves at the edge of absorbing boundaries can be suppressed without any significant reflection. The results also show that various waves e.g., transmission waves, reflection waves, and diffraction waves produced by heterogeneous material can be simulated well.
Analisis Metode Fuzzy Analytical Network Process untuk Sistem Pengambilan Keputusan Pemeliharaan Jalan Rizky Ardiansyah; M. Aziz Muslim; Rini Nur Hasanah
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 2: Mei 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Road, as one of the land transportation infrastructure, is important for economic improvement of an area. It needs special and regular maintenance by the local government, in order to keep the road in good condition. For this purpose, the government conducts a survey with the aim of getting criteria for determining priority of road maintenance. The obstacle in implementation of road maintenance is the lack of criterias which make difficulties in determining the priority of road maintenance. Decision-making system is needed to solve the problems of determining the priority of road maintenance. Fuzzy Analytical Network Process (FANP) can solve the problem by calculating the criteria to get priority value. This method consists of many steps, namely weighting among criteria, weighting among sub-criteria, triangular fuzzy number, fuzzy synthesis, weight matrix, and priorities. The results show that the priority order of routine road maintenance is Jl. Jakarta, Jl. Kelud, and Jl. Kyai Tamin. The accuracy rate obtained in this research is 66.67%. Sensitivity test shows that the damage of the roads and the road density are important factors in generating the weight value road maintenance priorities.
Wireless Data Logger Suhu Multi Channel Menggunakan Labview Siswo Wardoyo; Arya Prasetyo Habibie; Romi Wiryadinata
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 2: Mei 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Temperature is one of the physical quantities which are often used in control systems. The process of monitoring temperature in the form of a data logger is an important thing that is needed in the industry. This paper designs a wireless temperature data logger with multichannel input. Thermocouple is used as sensor input on this system. The results of this research indicate that the system is able to work wirelessly with a range of 300 meters until 800 m. Result of temperature measurement accuracy of the designed system is 99.419% or error temperature measurement against a reference temperature is 0.581%. Accuracy of voltage measurement towards Labview is 99.316% or error of 0.684%. The output file from data logger is file.tdms, which can be accessed by Microsoft Excel to be printed or processed further.

Page 32 of 65 | Total Record : 644

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