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All Journal CESS (Journal of Computer Engineering, System and Science) InfoTekJar : Jurnal Nasional Informatika dan Teknologi Jaringan JET (Journal of Electrical Technology) Journal of Natural Science and Integration Jatilima : Jurnal Multimedia Dan Teknologi Informasi INFOKUM MEANS (Media Informasi Analisa dan Sistem) INCODING: Journal of Informatics and Computer Science Engineering Instal : Jurnal Komputer Hello World Prosiding Seminar Nasional Teknik UISU (SEMNASTEK) Jurnal Pengabdian Mitra Masyarakat Pascal: Journal of Computer Science and Informatics
Satria Yudha Prayogi
Dosen Universitas Islam Sumatera Utara
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Social Sciences

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Journal : INFOKUM

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Implementation Of Watermarking Using The Singular Value Decomposition Method Satria Yudha Prayogi; Sony Bahagia Sinaga
INFOKUM Vol. 10 No. 1 (2021): Desember, Data Mining, Image Processing, and artificial intelligence
Publisher : Sean Institute

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Abstract

Technological developments have made it easy for the distribution of digital data (such as text, images, audio, and video) both with disk media and through internet media. On the other hand, this convenience can cause problems with copyright protection. One technique to overcome this problem is to insert a sign (watermark) as proof of ownership into digital data known as watermarking. Watermarks can be inserted into the spatial domain or the frequency domain. In general, watermarking in the frequency domain is more resistant to attacks than watermarking in the spatial domain. The watermarking method used in this study uses a transformation domain, namely Singular Value Decomposition (SVD). Tests used to provide a blurring effect). Where the technique using Singular Value Decomposition (SVD) is generally inserted into singular values based on the consideration that the singular value will not experience significant changes if there is a slight disturbance in the image.
Implementation of Question Bank Applications for Website-Based Students Pandi Barita Nauli Simangunsong; Satria Yudha Prayogi; Sony Bahagia Sinaga
INFOKUM Vol. 10 No. 5 (2022): December, Computer and Communication
Publisher : Sean Institute

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Abstract

Every tertiary institution, both private and public, has students with high and low scores. This also happened at the Catholic University of Santo Thomas, a private university in Medan, North Sumatra. So a solution is needed that can help students improve their grades, and one way is to make the previous year's questions a reference for student learning. So, a service or application is also needed that accommodates all the questions that exist at a university such as a question bank that can be accessed easily. The Waterfall method is used for the process of developing system engineering and software in an orderly and systematic manner. This method is taken with a systematic approach starting from needs analysis, system and software design, implementation, unit testing and development. In this application, users can upload questions they have, look for questions as references, mark questions that are considered important and download questions that are needed. Where is the purpose of making this application, students no longer have to bother looking for material references through the questions that were tested before. Where is the purpose of making this application, students no longer have to bother looking for material references through the questions that were tested before. The Waterfall method is used for the process of developing system engineering and software in an orderly and systematic manner. This method is taken with a systematic approach starting from needs analysis, system and software design, implementation, unit testing and development. In this application, users can upload questions they have, look for questions as references, mark questions that are considered important and download questions that are needed. Where is the purpose of making this application, students no longer have to bother looking for material references through the questions that were tested before. In this application, users can upload questions they have, look for questions as references, mark questions that are considered important and download questions that are needed. Where is the purpose of making this application, students no longer have to bother looking for material references through the questions that were tested before. In this application, users can upload questions they have, look for questions as references, mark questions that are considered important and download questions that are needed. Where is the purpose of making this application, students no longer have to bother looking for material references through the questions that were tested before.
Co-Authors Abdul Haris Nasution Ahmad Bakhori Ananta, Ardhan AULIA, RAHMAT Bonar Harahap Darlina Tanjung Ferdian, Ridho Frans Ikorasaki Harizan, Md Haslina, Siti Kennedi Tampubolon Luthfi Parinduri Mahrani Arfah Muarif, Muarif Muksin R. Harahap Nana Mardiana Oris Krianto Sulaiman Pandi Barita Nauli Simangunsong Riswan Limbong S, Sukartika Siddik Karo-Karo Sinaga, Sony Bahagia Sony Bahagia Sinaga Sony Bahagia Sinaga Sony Bahagia Sinaga Tamba, RL. Harmady