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All Journal Proceedings Book of International Conference and Exhibition on The Indonesian Medical Education and Research Institute JIKUM: Jurnal Ilmu Komputer
Khairunnisa, Zulfa
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Computer Science & IT Decision Sciences, Operations Research & Management Health Professions Medicine & Pharmacology Neuroscience Public Health

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Analisis Kinerja Algoritma Hash dan MAC terhadap Integritas dan Autentikasi Data Putri, Luthfiah; Khairunnisa, Zulfa; Senjani, Junita Rahma; Praramadani, Septia; Hasibuan, Yulandari
JIKUM: Jurnal Ilmu Komputer Vol. 2 No. 2 (2026): JIKUM: Jurnal Ilmu Komputer, November 2026
Publisher : LEMBAGA KAJIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (LKPPL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jikum.v2i2.166

Abstract

In information systems, data security plays a crucial role, particularly in ensuring data integrity and authentication during storage and transmission processes. Hash algorithms and Message Authentication Codes (MAC) are two cryptographic techniques commonly employed for these purposes. Hash algorithms are primarily used to maintain data integrity, whereas MAC provides both data integrity and authentication through the use of a shared secret key. This study aims to analyze and compare the performance of hash algorithms and MAC in preserving data integrity and authentication. The research adopts a quantitative experimental method with a comparative analysis approach, using test data of varying sizes and evaluating performance based on specific operational parameters. The results indicate that hash algorithms are effective in detecting data modifications through hash value comparison, while MAC offers stronger guarantees by ensuring both data integrity and authentication using a shared secret key. These findings highlight the strengths and limitations of each mechanism and provide insights into their appropriate application in secure information systems. The findings further suggest that hash algorithms are more suitable for data integrity verification, whereas MAC is more appropriate for systems that require both data integrity and authentication simultaneously.
Chronic Lower Back Pain Among Hospital Workers: Effect of Ergonomic Chair Intervention on Quality of Working Life: A Literature Review Khairunnisa, Zulfa
Proceedings Book of International Conference and Exhibition on The Indonesian Medical Education Research Institute Vol. 9 No. - (2025): Proceedings Book of International Conference and Exhibition on The Indonesian M
Publisher : Writing Center IMERI FMUI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69951/proceedingsbookoficeonimeri.v9i-.322

Abstract

Abstract Chronic lower back pain (CLBP) is a prevalent occupational problem among hospital workers, primarily caused by prolonged sitting and poor ergonomic posture. This condition contributes to reduced productivity, discomfort, and diminished quality of working life. Ergonomic chair interventions have been introduced as a potential preventive and therapeutic strategy to alleviate pain and improve workplace well-being. A narrative literature review was conducted by searching PubMed, Scopus, and Google Scholar databases from 2015 to 2025 using the keywords low back pain, chair intervention, and hospital workers. Selected studies discussed ergonomic chair modifications, posture correction, and work-related health outcomes. Most reviewed studies demonstrated that ergonomic chair interventions reduced pain intensity and disability scores, while improving posture stability and job satisfaction. Enhanced comfort and reduced fatigue were associated with better concentration and productivity. However, inconsistencies in chair design, user compliance, and study methods remain as limitations. A chair which is pivot adjustable and has adjustable backrest can reduce the muscle activity and also decreases the inter-vertebral disc pressure. Therefore, there is some support that adjustability of the chair can be directly associated with the function of the musculoskeletal system. Ergonomic chair interventions provide a promising approach to reducing CLBP and improving the quality of working life among hospital workers. Further high-quality studies are needed to develop standardized ergonomic recommendations for healthcare workplaces. Keywords: ergonomic chair, hospital worker, low back pain, quality of working life
Co-Authors Hasibuan, Yulandari Praramadani, Septia Putri, Luthfiah Senjani, Junita Rahma