Jurnal Online Universitas Pahlawan Tuanku Tambusai
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Analisis Efek Mediasi Stres Kerja dalam Hubungan Beban Kerja dan Kepuasan Kerja Karyawan
Full text linkThis study aims to analyze the mediating effect of work stress in the relationship between workload and employee job satisfaction. The research employs a quantitative approach using a census technique involving all 44 permanent employees. This study employs Structural Equation Modeling (SEM) based on Partial Least Squares (PLS). The results of the study show that: (1) workload does not have a significant effect on job satisfaction, as indicated by a coefficient value of 0.149, t-value of 0.583 < t-table of 1.96, and a significance value of 0.560 > 0.05, (2) workload has a positive and significant effect on job stress, with a coefficient of 0.617, t-value of 3.093 > t-table of 1.96, and a significance value of 0.002 < 0.05, (3) job stress has a negative and significant effect on job satisfaction, with a coefficient of -0.572, t-value of 3.093 > t-table of 1.96, and a significance value of 0.001 < 0.05, (4) workload has a negative and significant indirect effect on job satisfaction through job stress, with a coefficient of -0.353, t-value of 2.180 > t-table of 1.96, and a significance value of 0.029 < 0.05
Analisis Beban Kerja untuk Optimalisasi Produktivitas Tenaga Kerja pada Lini Produksi Mesin Pond (Studi kasus: UD. XYZ)
Full text linkThis study analyzes workload and determines the optimal number of workers on the pond machine production line at UD. XYZ using Workload Analysis (WLA) method and stopwatch time study. Data were collected through direct observation of 7 workers with 24 observations per work station during July-November 2025. The results show significant workload imbalance: the blade board manufacturing station experienced 446% overload, pond processes for Ivory 310, Duplex 350, and Duplex 310 were 185%, 191%, and 192% respectively, while plano paper cutting, QC cleaning, and packaging stations experienced underload below 75%. Standard time for pond processes ranged from 7.79-8.01 minutes. The study recommends adding 3 workers (total 10 people) with optimal redistribution to reduce workload to 46-111%, saving operational costs of Rp 10,368,000 per month (27%) while increasing productivity to achieve the target of 2,000 units per day
Perbandingan Produktivitas Blasting Menggunakan Copper Slag Baru, 1 & 2 Pada Permukaan Kapal dengan Preparation Spot Sweep Menggunakan Metode ANOVA
Full text linkDry abrasive blasting is a critical process in the shipyard industry for removing rust and contaminants from steel surfaces prior to coating. Copper slag, a by-product of copper smelting, is commonly used as an abrasive medium due to its hardness. This study compares blasting productivity using new copper slag, first-cycle recycled copper slag, and second-cycle recycled copper slag. The evaluated parameters include processing time, cleaned surface area, and surface roughness. A quantitative method employing one-way Analysis of Variance (ANOVA) was applied to determine significant differences among the treatments. The results show that new copper slag produces the highest surface roughness but requires longer processing time. First-cycle recycled copper slag provides the most optimal balance between time efficiency and surface quality, while second-cycle recycled copper slag achieves the fastest processing time with reduced surface roughness. ANOVA results indicate significant differences among the three treatments. The findings suggest that copper slag can be effectively reused for one recycling cycle without compromising the Sa 2.5 standard according to ISO 8501-1
Perancangan Sistem Informasi Pengadaan Bahan Baku Menggunakan Model Waterfall untuk Meningkatkan Efisiensi Sistem Purchasing (Studi Kasus: UD La Riz Mebel)
Full text linkThe manual raw material procurement system at UD La-Riz Mebel has caused various operational inefficiencies, including 23 stockout incidents per semester, overstock losses of Rp 20,450,000, order delays reaching 41%, and a recording error rate of 19%. This study aims to design a raw material procurement information system using the Waterfall model to enhance purchasing efficiency. The research methods include field observations, in-depth interviews, documentation studies, and system requirements analysis. System design follows the Waterfall phases: requirements analysis, system design using DFD, ERD, and database modeling, prototype implementation, and black-box testing. The results show that the proposed system reduces purchasing process time from 2.5 days to 0.5 days, decreases recording errors to 2%, reduces stockouts by 83%, and lowers overstock costs by 79%. Functional testing achieved a 100% success rate, while User Acceptance Testing scored 4.73 out of 5. The system significantly improves data accuracy, interdepartmental coordination, and overall operational efficiency
Perencanaan Jumlah Tenaga Kerja Optimal Untuk Memenuhi Permintaan Beras (Studi Kasus: PT Mujiarto Putri Kembar Sejahtera)
Full text linkThis study aims to determine the optimal number of workers at PT Mujiarto Putri Kembar Sejahtera to meet the increasing demand for rice production. The methods employed include work sampling, data uniformity and adequacy tests, performance rating, normal and standard time calculations, and Work Load Analysis (WLA). The results reveal that most work elements operate within reasonable workload limits, but the packaging section experiences excessive workload of up to 110%, leading to production delays and unmet demand. Based on the WLA results, one additional worker is required in the packaging section, raising the optimal workforce to 18 employees. This adjustment is expected to improve production capacity and balance workload distribution across workstations
Analisis Beban Kerja dan Jumlah Karyawan yang Optimal Berdasarkan Pemetaan Proses Bisnis di Restoran Sedjagad 36
Full text linkThis study analyzes the mental and physical workload of employees at Sedjagad36 Restaurant using the NASA-TLX and Cardiovascular Load (CVL) methods. Fourteen employees from barista, kitchen, and waiter divisions participated in the study. The results show that 42.9% of employees experience a high mental workload, while 57.1% fall under the moderate category. Temporal Demand and Effort are the most dominant indicators, indicating pressure from time constraints and exertion. Physical workload measured through CVL falls into the light category, yet it increases significantly during weekends due to higher customer volume. Observational findings also show that operational SOPs and long shifts contribute to both mental and physical workloads. Recommendations include shift adjustments, job rotation, and workload management improvements to reduce fatigue
Analisis Optimalisasi Waktu Proses Kerja pada Divisi Welding Menggunakan Metode Jalur Kritis
Full text linkThis study aims to analyze the optimization of work process time in the welding division using the Critical Path Method (CPM). This method is used to identify the critical path and calculate the slack variable for each production activity. The data used are the sequence of activities, dependency relationships, and production process time in 2024. The analysis process is carried out through the preparation of a network diagram, forward pass and backward pass calculations, and determining the slack value. The results show that the critical path is found in the series of activities A–B–C–D–E–F–G–H with a total duration of 17 minutes. All activities have a slack value of 0, so any delay has the potential to delay the entire process. These findings confirm that the production process in the welding division has been running optimally. The company is advised to maintain the existing work pattern and ensure the appropriate duration of each activity to maintain production efficiency.
Pengembangan Model Bisnis Kolaboratif Eduplay Lolipop Playspace berbasis BMC dan CBMX untuk Mendukung Kesejahteraan dan Work–Life Balance Ibu Bekerja
Full text linkThe increasing number of working mothers has driven the need for support services that can balance the demands of work and caregiving. This study aims to analyze the contribution of eduplay services to the work-life balance (WLB) of working mothers and map the business models of service providers using the Business Model Canvas (BMC) and the Collaborative Business Model Matrix (CBMX). The research approach is qualitative and descriptive, using interviews with working mothers, eduplay managers, and direct observation. The results show that eduplay services play a significant role in improving WLB by providing safe, flexible, and educational play spaces, thereby reducing the burden of daily caregiving. The BMC analysis describes the value structure, operations, and customer relationships that strengthen the service's position. The CBMX integration highlights strategic collaborations between parents, local MSMEs, schools, government, and companies in creating a sustainable service ecosystem. This study confirms that a collaborative approach can strengthen the sustainability of MSMEs in the eduplay sector while providing social impacts for working families, especially mothers
Artikel Review: Teknologi Zeolit untuk Penangkapan Karbon (Carbon Capture): Karakteristik, Modifikasi dan Tantangan Operasional
Full text linkZeolites are promising adsorbents for CO₂ capture due to their high surface area, thermal stability, and cost-effectiveness. Their performance can be enhanced through chemical modifications such as amine impregnation, cation exchange, and hydrophobic surface grafting, enabling improved selectivity and resistance to moisture. However, operational challenges remain, including water competition, regeneration energy demand, and cyclic stability under industrial conditions. Strategies like guard beds, hydrophobic zeolites, and hybrid systems are being developed to overcome these limitations. Zeolite-based adsorption offers a sustainable pathway for reducing CO₂ emissions and advancing low-carbon technologies
Potensi Food Bar Berbahan Daun Kelor, Mocaf, dan Ikan Kembung Sebagai Sumber Zat Besi, Vitamin C, dan Vitamin A Untuk Pencegahan Anemia Remaja Putri
Full text linkAnemia pada remaja putri masih menjadi masalah kesehatan global dengan prevalensi yang cukup tinggi. Kekurangan zat besi, vitamin A, dan vitamin C merupakan faktor utama yang berkontribusi terhadap kejadian anemia. Penelitian ini bertujuan untuk mengetahui potensi food bar berbasis tepung daun kelor, tepung mocaf, dan tepung ikan kembung sebagai pangan fungsional pencegahan anemia. Penelitian dilakukan menggunakan desain Rancangan Acak Lengkap (RAL) satu faktor dengan tiga formulasi (F1, F2, dan F3) dan dua kali ulangan. Analisis kandungan zat gizi dilakukan dengan metode ICP-OES untuk zat besi serta HPLC untuk vitamin A dan vitamin C. Hasil penelitian menunjukkan bahwa formula F3 memiliki kandungan zat besi tertinggi yaitu 3,62 ± 0,04 mg/g, sedangkan formula F2 memiliki kandungan vitamin A tertinggi sebesar 171,87 ± 2,35 mg/g. Kandungan vitamin C tidak terdeteksi pada semua formula, diduga akibat degradasi selama proses pengolahan termal. Secara keseluruhan, food bar berbahan dasar daun kelor, mocaf, dan ikan kembung memiliki potensi sebagai sumber zat besi dan vitamin A yang dapat mendukung pencegahan anemia pada remaja putri meskipun diperlukan strategi pengolahan lebih lanjut untuk mempertahankan vitamin C