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RIYADI
UNIVERSITAS NEGERI JAKARTA (JAKARTA STATE UNIVERSITY )
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Culinary Education: Evaluating Stake’s Countenance Model in Case-Based Learning Yuni Aulia; Riyadi; Rina Febriana
Journal of Pedagogi Vol. 2 No. 1 (2025): Journal of Pedagogi - February
Publisher : PT. Anagata Sembagi Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62872/9cwzxp75

Abstract

This study examines the effectiveness of case-based learning in a culinary education program through the lens of Stake’s Countenance Model of evaluation. The research seeks to identify how this evaluation framework can illuminate critical dimensions of teaching and learning, ultimately guiding improvements in curricular design and instructional practices.
Evaluation Model of Institutions Based on Scriven's Consumer-Oriented Approach to Improve the Quality of Digital Services for Students Dian Pertiwi Josua; Nuridayanti; Riyadi; Soeprijanto; Aip Badrujaman
Information Technology Education Journal Vol. 4, No. 2, May (2025)
Publisher : Jurusan Teknik Informatika dan Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59562/intec.v4i2.7723

Abstract

This study aims to implement an institutional evaluation model based on Consumer-Oriented Scriven to improve the quality of digital services for students at the State University of Jakarta (UNJ). The available digital services are considered less than optimal by students, so an evaluation model is needed that focuses on user needs and satisfaction. This study uses a mixed approach with a case study method, with data collection through in-depth interviews, surveys, and direct observation. The quantitative survey used a Likert scale to measure student satisfaction with various aspects of digital services, such as academic information systems (73% satisfied), e-learning (68%), financial applications (65%), online registration (70%), and online help services (66%). The validity of the analysis instrument was tested through factors and expert assessments, while the reliability showed a Cronbach Alpha (α) value of 0.87 which is classified as very good. The results of the study indicate that this evaluation model is able to identify areas that need to be improved and encourage student participation in the service evaluation process. The application of the consumer-oriented Scriven evaluation model has been shown to make a significant contribution to improving the quality of digital services at UNJ which are more responsive and efficient.
Evaluation Of The Field Work Practice Program (Pkl) Using The Discrepancy Evaluation Model (Dem) In The Computer Engineering And Informatics Expertise Program At Smk Negeri 7 Bandar Lampung Aiza Nabila Hasan; Ivan Hanafi; Riyadi Riyadi
Journal of Social Research Vol. 3 No. 6 (2024): Journal of Social Research
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The 2003 National Education System Law outlines the purpose of national education, emphasizing vocational education as secondary education aimed at preparing students for specific fields of work. However, the COVID-19 pandemic has created challenges in achieving these goals, prompting a need for evaluation and solutions. To address this, a program evaluation is proposed, focusing on analyzing the Industrial Work Program (PKL) in terms of design, implementation, process, and outcomes. The evaluation aims to assess the alignment between program objectives and actual results, considering factors such as program design, HR requirements, implementation scope, street vendors' involvement, and outcomes for schools, students, and industry partners. The Discrepancy Evaluation Model (DEM) by Malcom Provus is chosen for its ability to compare expectations with reality. The evaluation will employ both quantitative and qualitative methods, utilizing questionnaires, observations, interviews, and document analysis. Qualitative data analysis involves activities such as data reduction, display, validation (triangulation), and conclusion drawing, while quantitative analysis utilizes descriptive percentage analysis. The research seeks to generate recommendations that improve education quality and program evaluation practices, particularly in ICT-based competency development during the pandemic transition. By providing a detailed evaluation, the study aims to offer actionable insights for enhancing the PKL program's effectiveness and contributing to educational advancement.
Characteristics of Natural Fiber Composites Materials Reinforced with Aluminum and Copper Powder for The Performance of Automatic Motorcycle Clutch Pad Riyadi Riyadi; Ahmad Kholil; Januar Parlaungan Siregar; Siska Titik Dwiyati; Danang Budi Pratama; Ari Setiawan; Eko Arif Syaefudin
Automotive Experiences Vol. 6 No. 2 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.8878

Abstract

Currently, research on natural fiber composites (NFC) for automotive applications has attracted the attention of researchers and academics. Natural fibers such as coconut fiber and wood powder are mixed with metal materials such as aluminum and copper to obtain the composite characteristics of automatic motorcycle clutch pad materials. Coconut fiber and wood powder are suitable natural materials for composites and are easily obtained from waste. Natural fiber materials with metal reinforcement into composites are expected to produce materials suitable for friction materials such as clutch pads and brake pads with a good characteristic. This study aims to determine the characteristics of the coefficient of friction, wear, and hardness of NFC materials reinforced aluminum and copper powder for the performance of automatic motorcycle clutch pads. Experiments were carried out on various compositions of aluminum and copper powder. Tribometer testing was carried out to determine the friction coefficient and wear. Hardness testing using the Vickers method and testing the performance of automatic motorbikes with a chassis dyno test. The results show that the performances of the clutch pad with NFC-reinforced aluminum and copper show power and torque results that resemble the performances of genuine part materials in each operating cycle. The value of friction coefficient, wear, and hardness of this material are a value close to that of a genuine part clutch pad material. The improved performance of this material is expected to be considered in the manufacture of future clutch pads.
Co-Authors Abizal Ravi Islami Achmad Ridwan Adi Tri Tyassmadi Ahmad Kholil Aip Badrujaman Aiza Nabila Hasan Anisa Cahyaningsih Annisa Nurul Siva Ari Setiawan Arya Firmansyah Danang Budi Pratama Darwin Rio Budi Syaka Dian Pertiwi Josua Dinny Devi Triana Eko Arif Syaefuddin Eko Arif Syaefudin Faisal Madani Gaguk Margono Hasna Rashifah Ivan Hanafi Januar Parlaungan Siregar Lista Apriliani M. Kevin M. Raihasabiq MOCHAMAD HERLAN Muh. Alvaritsi MUHAMAD SUHARDI Muhammad Lutfhi Aziz Nugroho Gama Yoga Nuridayanti Nuridayanti Randika Hadi Pratama Ratu Amilai Avianti Rina Febriana Rizky Nahdatul Sarmidi Sarmidi Siska Titik Dwiyati Soeprijanto Soeprijanto Suratno Suratno Yoga Budi Bhakti Yuda Dwi Rama Putra Yuli Rahmawati Yuni Aulia