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All Journal Jurnal Ilmu Ekonomi, Pendidikan dan Teknik (IDENTIK) Jurnal Ilmu Teknologi Informasi Indonesia (JITIFNA)
Cerahman Halawa
Universitas Nias
Religion Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Industrial & Manufacturing Engineering

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Analisis Dan Perancangan Sistem Informasi Pelayanan Administrasi Desa Berbasis Web Pada Desa Lolowonu Niko'otano Fajar Laskar Harefa; Agus Fortiman Telaumbanua; Cerahman Halawa; Jurisman Waruwu
Jurnal Ilmu Teknologi Informasi Indonesia Vol. 2 No. 2 (2026): JITIFNA - Juli
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/jitifna.v2i2.1659

Abstract

The development of information technology has pushed for digitalization in public services, including village administrations. Lolowonu Niko'otano Village still relies on conventional methods for managing citizen data, archiving documents, and issuing letters, resulting in delays and data loss risks. This study aims to analyze, design, and implement a Web-Based Village Administration Information System using the Waterfall development model. System features focus on population data management, administrative letter requests, and automated reporting. System functionality was evaluated using Black Box Testing, while usability was measured using the System Usability Scale (SUS). The Black Box results confirmed that all features functioned correctly according to user requirements. The SUS evaluation showed high user acceptance, indicating that the system effectively improves the speed, accuracy, and overall quality of public services in the village.
Analisis Efesiensi Mesin Carnot Dalam Sistem Termodinamika Cerahman Halawa; Heppy Bulan Seven Halawa
Jurnal Ilmu Ekonomi, Pendidikan dan Teknik Vol. 1 No. 3 (2024): IDENTIK - November
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/identik.v1i3.105

Abstract

This study aims to analyze the literature related to the efficiency of the Carnot Engine in thermodynamic systems, focusing on theoretical limitations and factors affecting efficiency in real applications. The Carnot Engine, as an ideal model, provides an illustration of the maximum efficiency limit for the conversion of heat energy into work in a system involving two heat reservoirs at different temperatures. This ideal efficiency, which is determined only by the reservoir temperatures, is difficult to achieve in practice due to irreversibility factors such as friction, imperfect heat transfer, and entropy increase. This literature review presents a deeper understanding of the principles of thermodynamic efficiency, the applications of the Carnot cycle in modern technologies such as power generation and refrigeration systems, and the challenges in approaching ideal efficiency in real engines. The results of this analysis are expected to contribute to improving energy efficiency in various industrial sectors.
Co-Authors Agus Fortiman Telaumbanua Fajar Laskar Harefa Heppy Bulan Seven Halawa Jurisman Waruwu