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All Journal Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic) Jurnal Rekayasa Sistem Industri OPSI SITEKIN: Jurnal Sains, Teknologi dan Industri Journal Industrial Servicess PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Jurnal Teknik Industri : Jurnal Hasil Penelitian dan Karya Ilmiah dalam Bidang Teknik Industri Jurnal Ergonomi dan K3 Jurnal Kreativitas PKM IJIES (International Journal of Innovation in Enterprise System) Jurnal Ilmiah Teknik Industri Jurnal Optimalisasi Matrik : Jurnal Manajemen dan Teknik Industri Produksi Jurnal ABDINUS : Jurnal Pengabdian Nusantara Jurnal Abdidas Journal of Industrial Engineering and Operation Management (JIEOM) JISO : Journal of Industrial and Systems Optimization Jurnal Abdimas Ilmiah Citra Bakti (JAICB) Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat JURNAL TEKNIK INDUSTRI Integrasi: Jurnal Ilmiah Teknik Industri Journal of Integrated System IJIES (International Journal of Innovation in Enterprise System)
Elty Sarvia
Universitas Kristen Maranatha
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Journal : Jurnal Optimalisasi

 1 
Analisis Pengaruh Jenis dan Intensitas Suara Terhadap Kemampuan Memori Jangka Pendek, Tingkat Kantuk, dan Kecepatan Denyut Jantung Mahasiswa dalam Kegiatan Menghafal Vania, Grace; Soesilo, Novi; Sarvia, Elty
Jurnal Optimalisasi Vol 10, No 2 (2024): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v10i2.9262

Abstract

In the process of learning, having good memory skills is crucial for students. Several factors can affect memory, one of which is an external factor, sound. Sound distraction can disrupt concentration, speed up the pulse rate, and cause sleepiness, but on the other hand, it can also eliminate sleepiness. This research aims to analyze the effect of type and intensity of sound on college students' short-term memory abilities, sleepiness level, and heart rate, analyze the relationship between these variables, and provide suggestions for a conducive learning environment. This research was conducted in a laboratory using Task Short-Term Memory, the Stanford Sleepiness Scale, and an oximeter. The data collected will be processed using ANOVA and Pearson Correlation Tests. The results indicated that the type of sound (preferred music and crowd noise) and sound intensity (±50 dB and ±70 dB) do not affect short-term memory ability, sleepiness level, and heart rate. Furthermore, sleepiness level has a negative correlation with heart rate. Based on the findings, the optimal learning environment suggested for college students is music with a preferred intensity of ±50 dB. In contrast, the worst learning environment is a crowded environment, such as a café.
Reduksi Risiko Musculoskeletal Disorders pada Proses Packing di Industri Garmen Paganta, Dioren Tri; Indrianti, Efie; Sarvia, Elty
Jurnal Optimalisasi Vol 12, No 1 (2026): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v12i1.14848

Abstract

Musculoskeletal disorders (MSDs) remain one of the major issues in manufacturing industries that still rely on manual work, including the textile and garment sectors. The large-scale packing process is often perceived as a simple activity; however, in practice, it involves non-neutral working postures, manual lifting of heavy loads 16–18 kg, and repetitive movements, which increase the risk of MSDs. This study aims to identify the level of postural risk in the large-scale packing process at PT. HX and to design and implement an ergonomic assistive device as an effort to reduce MSD risks. Postural evaluation was conducted on 14 main activity scenarios using the Rapid Entire Body Assessment (REBA) method. The results showed that 92.86% of activities fell into medium to very high-risk categories, with the highest REBA score reaching 11. Further analysis using fishbone diagrams and the 5 Whys method identified that work methods and facility design were the dominant factors contributing to the high ergonomic risk, particularly due to the use of pallets at low working heights (±14 cm) and the absence of ergonomic assistive devices. Based on these findings, an Ergonomic Adjustable Packing Table was designed and implemented, featuring a height-adjustable mechanism using a pneumatic spring and a roller conveyor system with an inclination of approximately 7°. Post-implementation evaluation indicated that no activities remained in the medium to very high-risk categories (0%), and the maximum REBA score decreased from 11 to 2. The number of work activities was also reduced from 14 to 5 ( 64.3% reduction) due to the elimination of high-risk manual handling tasks. In addition, the cycle time for the packing process decreased significantly from 188.04 seconds to 92.15 seconds (an efficiency improvement of 51.0%). These results demonstrate that an ergonomic approach based on postural improvement and assistive device design is effective in enhancing safety, comfort, and work efficiency in large-scale packing processes.
Co-Authors Aji Pranata, Yosafat Akhmad Jauhari Rizal Andrie, Salfredo Andrijanto Andrijanto Andrijanto Ary Dharmawan Augustin, Alena Christie Sofyan Christina Christina Christina Christina Christina Wirawan Cristy Caroline Daniel Willard Danu Ari Hidayat Dewi Christina Syamsir Dharmawan, Ary Elizabeth Wianto, Elizabeth Elvira Natalia Emerentia, Kharens Erwin Ardianto Halim Estri Indah Septarini evita evita Evita Evita Fathurochman, Tri Rizqi Fiona Aprilia Florence Leony, Florence Gavriel Deflin Farisca Putri Gheva Julian Eldrin Gideon B Dacosta Gideon Benjamin da Costa Ginardy Husada Halim, Stefanny Hendry Wong Indrianti, Efie Ismail, Tubagus Panji Jahja Hamdani Widjaja Karin Andrian Kartika Suhada Kevin Tjahyadi Kristianti, Meilena Leonardo Leonardo Leonardo, Leonardo Lydia Liestiana Karliman Markus Tanubrata Martin Martin Michelle Abigail Ersani Mika Gunawan Muhamad Alvito Deannova Muhammad Rafi Nafis Nurtsani Narwasti, Eimel Noek Sulandari Novi Novi Novi Soesilo Paganta, Dioren Tri Panjaitan, Glora Sawita Br Patricia, Joanna Pertiwi Apriyani Pin Panji Yapinus, Pin Panji Puspita, Sintika Rainisa Maini Heryanto Ramadhani, Zukhruf Resa Anggriany Ganesha Roma, Beatus Salim, Gabriel Koesuma Setiawan, Ivonne Averina Soesilo, Novi Soly, Silviana Steffy Sebastian Theodore Setiawan Widjaya Theodore Setiawan Widjaya Tri Rizqi Fathurochman Valdi Valdi Vania, Grace Viando Kurniawan Fernadi Vincent Tantony Vivi Arisandhy Wadu, Christian Vallentino Warren Evander Santoso Wawan Yudiantyo, Wawan William Tata Willy Willy Winda Halim Winda Halim, Winda Yerico Franssugar Hutajulu Yosafat Aji Pranata Yosafat Aji Pranata Yoshua Glenn Winston