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All Journal International Journal of Electrical and Computer Engineering IJCCS (Indonesian Journal of Computing and Cybernetics Systems) Techno.Com: Jurnal Teknologi Informasi TELKOMNIKA (Telecommunication Computing Electronics and Control) JUITA : Jurnal Informatika Proceeding of the Electrical Engineering Computer Science and Informatics Angkasa: Jurnal Ilmiah Bidang Teknologi CCIT (Creative Communication and Innovative Technology) Journal Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Ahmad Ashari
Universitas Gadjah Mada
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Analisis Penerimaan Pengguna BSE dengan Pendekatan Technology Acceptance Model di Kabupaten Kulon Progo Chris Agung Pramudi; Ahmad Ashari; Selo Sulistyo
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 2: Mei 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (389.808 KB)

Abstract

Aspects of user acceptance become one the main factors for success of the application of information technology. Use of Electronic School Book (BSE) led to a transformation of the how getting a book and learning from the manual into an electronic system, which lead to the attitude and behavior of the user to accepting and use it for real. This study analyzes user acceptance BSE in the Regency of Kulon Progo, measured from the level of user acceptance.Technology Acceptance Model (TAM) is used as a framework for modeling acceptance BSE. Model generated identifies three exogenous variables are: ease of use, usefulness, and behavioral intention to use and 4 endogenous variables are: subjective norm, system relevance, accessibility quality and computer self-efficacy. The model was analyzed using the Structured Equation Modeling (SEM) with AMOS 21 program.The results showed that the TAM model to explain the factors that influence user acceptance BSE. Based on a sample of 167 respondents that are teachers as BSE users, of the total 10 hypotheses suggests that the accessibility variable quality not significantly affect the perception of usefulness and perceived ease of use of BSE. BSE Actual use is low, need to encourage the willingness to use BSE with respect to user acceptance variables.
Fabrication and experimental study of transformer 400 V with a simple rectifier circuit design Fitri Puspasari; Sismanto Sismanto; Ahmad Ashari
International Journal of Electrical and Computer Engineering (IJECE) Vol 13, No 2: April 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v13i2.pp1320-1328

Abstract

The demand for increased voltage in renewable energy sources is relatively high. This study examines the rapid development of technology considering the use of voltage-increasing transformers. Voltage regulator circuits are generally used to stabilize the output voltage of the rectifier according to the amount of input from the transformer. However, components for high-voltage stabilizer circuits are rare, which becomes an obstacle to the stabilization of the rectifier output. This study aimed to determine the performance of the designed rectifier circuit against a non-center tap step-up direct current (DC) 400 V transformer and compare the measurement results to manual calculations. The research method is a direct comparison between the input and output voltage values of the transformer after going through a rectifier circuit. This experiment was conducted using the repeatability method three to five times for each voltage variation on the transformer. The voltage variations successfully created are 0 to 50, 0 to 100, 0 to 200, and 0 to 400 V. The output test results from the DC transformer and rectifier circuit show linear results and an increase in peak-to-peak voltage data between the transformer and rectifier outputs by 3.8%.
Design of Automatic User Identification Framework in Crowdsourcing Requirements Engineering : User Mapping and System Architecture Rosa Delima; Mardhani Riastiawan; Ahmad Ashari
CCIT Journal Vol 16 No 1 (2023): CCIT JOURNAL
Publisher : Universitas Raharja

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (562.803 KB) | DOI: 10.33050/ccit.v16i1.2513

Abstract

The requirement elicitation is the initial stage of requirement engineering where information collected from users. The process are significantly determined by the quality and quantity of information collected. The crowdsourcing is a method of information gathering from many users. The number and variety of users in the crowdsourcing are both advantages and challenges in the elicitation process. This study purposes a framework for user identification that consists of user mapping and architecture system. The identification process consists of 8 main states, start with defining context, user target and scope determination, data source determination, user data collection, data pre-processing, feature selection, data classification and user identification. The results of this study is an initial state for development of an automated tool for user identification to elicit requirement through crowdsourcing. By the framework can be generated the user classification, which can be used to apply the appropriate method for gathering information in elicitation process.
Co-Authors Agus Harjoko Astika Ayuningtyas Chris Agung Pramudi Irwan Endrayanto, Irwan Kabul Kurniawan Khabib Mustofa Lasmedi Afuan Mardhani Riasetiawan Mardhani Riastiawan Medi Taruk Mulyanto Mulyanto Mursid Wahyu Hananto Puspasari, Fitri Rahmat Karim Rosa Delima Selo Sulistyo, Selo Sismanto Sismanto Suharsono Bantun Yohanes Suyanto