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All Journal Jurnal Teknik Informatika UNIKA Santo Thomas Jatilima : Jurnal Multimedia Dan Teknologi Informasi INFOKUM Jurnal Sistem Komputer dan Informatika (JSON) Jurnal Info Sains : Informatika dan Sains Jurnal Teknik Informatika Unika Santo Thomas (JTIUST) Jurnal Komputer Indonesia (JU-KOMI) Pengabdian Kepada Masyarakat Indonesia SEAN (ABDIMAS SEAN) Jurnal Teknik Indonesia (JU-TI) Marsipature Hutanabe: Jurnal Pengabdian Kepada Masyarakat Pascal: Journal of Computer Science and Informatics "Journal of Data Science Jurnal Ekspresi: Desain Komunikasi Visual dan Seni
Manalu, Mamed Rofendi
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Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Library & Information Science Mechanical Engineering Nursing Public Health Social Sciences

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Testing the K-Means Clustering Algorithm in Processing Student Assignment Grades Using the RapidMiner Application Simangunsong, Pandi Barita Nauli; Manalu, Mamed Rofendi
Journal Of Data Science Vol. 1 No. 02 (2023): Journal Of Data Science, September 2023
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/jds.v1i02.2838

Abstract

In the current era of computers and the internet, educational data analysis has become very important to optimize the teaching and learning process. This study focuses on the use of the K-Means clustering algorithm used by the RapidMiner application to group assignment grades given to students during one academic semester. The goal is to discover patterns of achievement and areas that require intervention. The results show that the algorithm is very effective in identifying groups of students based on their performance and dividing them into middle, high, and those who need help. In short, the use of K-Means Clustering with RapidMiner offers a useful analytical approach for education. This allows for a more customized learning approach that is based on analysis of student achievement.
Analyzing ChatGPT Impact on Student Productivity in Information Technology Program at Politeknik Negeri Tanah Laut Hafizd, Khairul Anwar; Manalu, Mamed Rofendi; Arif, M Aidil
Jurnal Sistem Komputer dan Informatika (JSON) Vol. 7 No. 2 (2025): Desember 2025
Publisher : Universitas Budi Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30865/json.v7i2.9495

Abstract

The rapid development of generative artificial intelligence, particularly ChatGPT, has transformed the way students complete academic tasks, especially in the field of Information Technology. Despite its widespread adoption, concerns remain regarding its impact on students’ productivity and learning quality. This study aims to analyze the effect of ChatGPT usage on the productivity of students in the Information Technology Study Program at Politeknik Negeri Tanah Laut. A quantitative research approach with a survey method was employed. Data were collected through a Likert-scale questionnaire distributed to active students who had used ChatGPT for academic purposes. The collected data were analyzed using validity and reliability tests, followed by simple linear regression analysis to examine the effect of ChatGPT usage on student productivity. The results indicate that ChatGPT usage has a positive and significant effect on student productivity. Productivity improvements are mainly observed in task efficiency and timely task completion. However, the quality of academic outputs remains highly dependent on students’ ability to critically evaluate, verify, and further develop the outputs generated by ChatGPT. These findings suggest that ChatGPT functions effectively as an academic assistant rather than a substitute for critical thinking and independent learning. This study concludes that ChatGPT can be utilized as a supportive academic tool to enhance student productivity when used appropriately and responsibly, supported by adequate AI literacy and academic supervision. The findings are expected to provide empirical insights for higher education institutions in formulating policies and guidelines for the ethical and productive use of ChatGPT in academic activities.
Multimedia Design for Imelda Hospital Company Profile Indonesian Workers As Effective Promotional Media Mamed Rofendi Manalu; Denni M Rajagukguk
Jurnal Ekspresi : Desain Komunikasi Visual dan Seni Vol. 1 No. 01 (2023): Jurnal Ekspresi : Desain Komunikasi Visual dan Seni, April 2023
Publisher : Jurnal Ekspresi : Desain Komunikasi Visual dan Seni

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

Abstract

Imelda Hospital for Indonesian workers is a hospital as one of the public service institutions that requires the existence of an accurate and reliable information system, and is sufficient to improve its services to the community and other related environments. To support the information and promotion media that are specifically intended only for Indonesian Workers' Imelda Hospital, in order to provide more detailed and in-depth information about services and facilities and information contained in the Indonesian Workers' Imelda Hospital, research on multimedia design, to solve the problem of how effective promotional media will be carried out to support the sustainability of Indonesian workers' Imelda hospitals.
Co-Authors Abdul Sani Sembiring Amran Manalu Arif, M Aidil Cosmas Samuel Daeli Cosmas Samuel Daeli Denni M Rajagukguk Denni M Rajagukguk Denni M. Rajagukguk Edward Robinson Siagian Elvika Rahmi Elvitrianim Purba Fachry Abda El Rahman Fajar Maulana Ika Yusnita Sari Khairul Anwar Hafizd, Khairul Anwar Khairunisa Khairunisa Khairunisa, Khairunisa Kristian Siregar Kristian Siregar Laia , Bualazatulo Lumbanbatu, Maristella J. M.Rajagukguk, Denni Maristella J. Lumbanbatu Marjones Hardy H Sihombing Maulana, Fajar Mendrofa, Lilis Karlina Monang JT Sihombing Monang Juanda Tua Sihombing Monang Juanda Tua Sihombing Muhammad Iqbal Panjaitan Panjaitan, Muhammad Iiqbal Panjaitan, Muhammad Iqbal Purba, Elvitrianim Rahmi, Elvika Rajagukguk , Denni M. Rajagukguk, Denni M. Riswan Limbong Riswan Limbong RL. Harmadi Tamba Sembiring, Abdul Sani Siagian, Edward Robinson Siddik Karo-Karo Sihombing , Monang Juanda Tua Sihombing, Marjones H.H. Sihombing, Marjones Hardy H Sihombing, Monang JT Simangunsong, Pandi Barita Nauli Siringoringo, Rimmar Susyla, Esti Fitri Tamba, RL. Harmadi