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All Journal JURNAL SISTEM INFORMASI BISNIS Jurnal Teknologi Informasi dan Ilmu Komputer Jurnal Terapan Abdimas JOURNAL OF APPLIED INFORMATICS AND COMPUTING KACANEGARA Jurnal Pengabdian pada Masyarakat Abdimas UNWAHAS : Jurnal Pengabdian Masyarakat UNWAHAS Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam Jurnal Desain dan Analisis Teknologi Bulletin of Social Informatics Theory and Application Scientific Journal of Informatics
Dwi Ely Kurniawan
Politeknik Negeri Batam
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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Analisis Hasil Teknik Penyembunyian Hak Cipta Menggunakan Transformasi DCT dan RSPPMC pada Jejaring Sosial Kurniawan, Dwi Ely; Hartadi, Nanda Rachmat; Prasetyawan, Purwono
Jurnal Teknologi Informasi dan Ilmu Komputer Vol 5 No 3: Juni 2018
Publisher : Fakultas Ilmu Komputer, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (74.71 KB) | DOI: 10.25126/jtiik.201853692

Abstract

Perkembangan teknologi internet memberikan kemudahan dalam aktifitas sehari-hari dalam mendapatkan data digital. Seseorang dengan mudah berhak mengklaim data digital sehingga dapar menimbulkan masalah dalam hak cipta suatu data. Salah satu metode yang dikembangkan dalam penelitian ini menggunakan watermark invisible dan digital signature. Teknik penyisipan watermark menggunakan transformasi Discrete Cosinus Transform (DCT) dan Randomly Sequenced Pulse Position Modulated Code (RSPPMC). Hasil dari penelitian diperoleh bahwa dilakukan pengujian pada citra RGB dan grayscale pada masing-masing file JPG dan BMP diperoleh nilai PSNR, dimana untuk file JPG mencapai 54,97 dB dan untuk file BMP mencapai 56,11 dB. Nilai PSNR yang dihasilkan diperoleh bahwa kualitas citra cukup baik, terlihat dari hasil dari histogram analysis citra, sebelum disisipi dan sudah disisipi tidak mengalami perubahan yang mencolok. Pengujian dilakukan dengan upload ke media jejaring sosial, menunjukkan media jejaring Line, Facebook, Flicker, Google Photo, Photo Bucket, TinyPic, dan Imgbb berhasil didecode ulang. Namun pada media jejaring Instagram, Twitter dan Whatsapp gagal didecode ulang, karena jejaring sosial tersebut melakukan kompresi terhadap file citra.   AbstractThe development of Internet technology provides convenience in everyday activities in obtaining digital data. One can easily claim the digital data so that it can cause problems in the copyright of a data. One of the methods developed in this research uses invisible watermark and digital signature. The watermark insertion technique uses Discrete Cosinus Transform (DCT) transformation and Randomly Sequenced Pulse Position Modulated Code (RSPPMC). The result of this research shows that the test on RGB and grayscale image in each JPG and BMP file is obtained by PSNR value, where for JPG file reach 54,97 dB and BMP file reach 56,11 dB. The resulting PSNR values obtained that the image quality is good enough, seen from the results of the histogram analysis image, before inserted and has been inserted did not change significantly. Testing is done by uploading to social networking media, showing network media Line, Facebook, Flicker, Google Photo, Photo Bucket, TinyPic, and Imgbb successfully decoded. But on network media Instagram, Twitter and Whatsapp failed to be decoded again, because the social networking compression of image files.  
Instalasi Jaringan Internet dan Panel Surya Untuk Pengontrolan Absensi Siswa dan Keamanan CCTV di Masjid Dzikri, Afdhol; Kurniawan, Dwi Ely; Resda, Dodi Prima
Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam Vol. 5 No. 2 (2023): Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/abdimaspolibatam.v5i2.6875

Abstract

Nowadays, the application of technology in mosques is important to help the smooth running of activities. Miftachul Jannah Mosque, Duriangkang Village, Sungai Beduk Subdistrict, Batam City seeks to overcome two main problems; first, the repeated theft of charity box money. Second, there are frequent power outages that disrupt the recitation process. As a solution, the service team conducted research aimed at improving security and electricity availability through the installation of internet networks and solar panels, which are integrated with CCTV systems. The object of this research focuses on the application of technology in the mosque environment to ensure the continuity of religious activities without obstacles. The Participatory Rural Appraisal (PRA) method was applied to design and implement the system with the participation of mosque administrators and teachers. The results show that the utilization of solar power generation significantly supports the operation of electronic equipment, such as street lighting and power sources for wifi routers and CCTV. The implementation of this system has proven to provide tangible benefits, in the form of a reliable source of renewable energy and increased security functions through internet-connected CCTV, which also supports the teaching and learning process with an online attendance system for TPQ students. And the administrators and teachers are satisfied with this service.
Optimizing Inventory Management: Data-Driven Insights from K-Means Clustering Analysis of Prescription Patterns Dermawan, Aulia Agung; Ansarullah Lawi; Putera, Dimas Akmarul; Kurniawan, Dwi Ely; Ummatin, Kuntum Khoiro; Jorvick Steve
Scientific Journal of Informatics Vol. 11 No. 3: August 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v11i3.8690

Abstract

Purpose: The goal is to improve how inventory is managed in healthcare by using K-Means clustering to analyze prescription trends. This approach helps ensure better stock availability, streamlines operations, and ultimately increases sales opportunities. Methods: This research applied the K-Means clustering algorithm to analyze a comprehensive dataset of prescription behaviors from XYZ Clinic. By grouping similar prescriptions into clusters, this method highlighted patterns within the data. These insights led to the identification of unique prescription categories, enabling the creation of tailored recommendations for improving inventory management. Result: The analysis showed that Cluster 1 should be prioritized for inventory management due to its high sales potential and consistent prescription patterns. It is recommended to increase stock for the medications in Cluster 1 to improve inventory turnover and streamline clinical operations. These findings underscore the value of K-Means clustering in healthcare, especially for enhancing inventory management and operational efficiency. Novelty: This research presents a novel application of K-Means clustering in healthcare, focusing on prescription patterns and inventory management. While previous studies have primarily used K-Means clustering for areas such as risk assessment and logistics, this study provides valuable data-driven insights to improve inventory management strategies in healthcare. The results highlight how clustering methods can support better decision-making and resource allocation, ultimately leading to greater operational efficiency and improved patient care.
Program pengabdian guru dan tata usaha TK/RA di Batam Kurniawan, Dwi Ely; Dzikri, Afdhol
KACANEGARA Jurnal Pengabdian pada Masyarakat Vol 5, No 1 (2022): Januari
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/kacanegara.v5i1.1052

Abstract

Guru dan tata usaha merupakan ujung tombak dalam pengembangan peserta didik. Namun, banyak guru yang masih mengalami kesulitan mengikuti perkembangan berbagai metode baru dalam pembelajaran terutama pada anak PAUD. Sistem inventarisasi data di sekolahpun masih menggunakan cara konvensional (mencatat di kertas). Guru PAUD dituntut untuk selalu kreatif dalam membuat media pembelajaran yang tepat sesuai perkembangan anak. Staf administrasi (TU) dituntut untuk mengikuti perkembangan teknologi informasi. Metode pelaksanaan dalam program ini meliputi tahap persiapan, tahap pelaksanaan dan tahap evaluasi. Tahap persiapan membuat kesepakatan untuk mengalokasikan waktu dan tempat selama program pelatihan dan pendampingan. Selain itu menganalisis kebutuhan dengan melihat spesifikasi perangkat yang sudah ada dan sistem yang sudah berjalan. Tahap pelaksanaan berupa program pelatihan dan pendampingan untuk guru dan tata usaha di Batam. Pada tahap evaluasi, dievaluasi program pelatihan dan pendampingan secara keseluruhan. Harapannya setelah pelatihan dan pendampingan, guru TK / RA dan tata usaha memiliki kemampuan dalam penguasaan media IT maupun online untuk lebih kreatif dan inovatif dalam menyiapkan pembelajaran yang sesuai dengan perkembangan anak. Selain itu dapat terjalin kerjasama mitra secara kontinuitas.
Co-Authors Adi, Roni Adian Fatchur Rohim Afdhol Dzikri, Afdhol Arnomo, Sasa Ani Aulia Agung Dermawan Budi Arif Dermawan Dimas Akmarul Putera Dzikri , Afdhol Fadila, Aminudin Hartadi, Nanda Rachmat Herman, Nanna Suryana Iqbal Maulana Jaman, Jajam Haerul John Friadi Jorvick Steve Kusworo Adi Leman, Abdul Mutalib Marselina, Sonia Narupi Narupi, Narupi Permatasari, Ismi Aprilianti Prasetyawan, Purwono Raynold, Raynold Resda, Dodi Prima Thohari, Ahmad Hamim Ummatin, Kuntum Khoiro Vonega, Defangga Aby