Jurnal Online Universitas Pahlawan Tuanku Tambusai
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Analisis Kualitas Udara serta Pemodelan AERMOD untuk Proyeksi Pola Penyebaran Emisi Genset PT. X
Full text linkAir quality is an important aspect in maintaining environmental sustainability in industrial work areas. In facilities that rely on backup power systems such as generator sets, emission release remains a potential source of air pollution, particularly during operation. This study investigates ambient air quality, noise levels, and models the potential dispersion of genset emissions at PT. X. Ambient air, emission, and noise measurements were conducted directly in the field. The results showed that all ambient air quality and noise parameters were below the applicable regulatory limits, with differences influenced by surrounding activities, location characteristics, and genset operation schedules. Dispersion modeling using AERMOD indicated that the highest pollutant concentrations occurred near the emission source and decreased with distance, influenced by wind direction and speed. The modeling results suggest that the environmental impact of genset emissions remains low and within acceptable limits.
Analisa Defect pada Produk Back Cover Menggunakan Metode PDCA untuk Pengurangan Claim Customer di PT. XYZ
Full text linkXYZ is a manufacturing company that produces television back cover components and is required to meet customer quality standards. However, in April, a defect rate of 7% was found, exceeding the company's tolerance limit of 5%, with the dominant type of defect being dirty defects. This situation has led to an increase in customer claims and has affected both quality costs and the company's reputation. This study aims to analyze the causes of dominant defects in back cover products and formulate corrective actions to reduce customer claims using the Plan Do Check Action (PDCA) method. The research method used is quantitative descriptive with data collection techniques through observation, interviews, and production data analysis. Analytical tools include check sheets, Pareto diagrams, fishbone diagrams, and 5W+1H analysis. Research results indicate that the implementation of PDCA is able to identify the root causes of defects and generate effective improvement proposals to reduce defect levels and continuously enhance product quality.
Pengaruh Intervensi Keperawatan Komunitas Menggunakan Aplikasi Nutrikost Dalam Peningkatan Gizi Remaja
Full text linkSaat ini, status gizi banyak remaja masih belum memadai. Kurangnya pengetahuan tentang kebutuhan gizi dan kemampuan untuk menyiapkan makanan bergizi merupakan faktor penyebabnya. Penelitian ini bertujuan untuk melakukan intervensi keperawatan komunitas menggunakan aplikasi Nutrikost untuk meningkatkan gizi remaja. Desain penelitian ini menggunakan desain quasi-eksperimental dengan kelompok kontrol. Analisis data menggunakan uji-t dependen dan uji-t independen. Sampel penelitian ini adalah remaja yang memiliki ponsel pintar. Pada kelompok intervensi, remaja menerima intervensi komunitas menggunakan aplikasi Nutrikost selama satu bulan, dan kemudian pengetahuan dan status gizi mereka dinilai sebelum dan sesudah intervensi. Aplikasi ini menyediakan pendidikan dan konseling dua arah dan satu arah. Kelompok Kontrol menerima layanan kesehatan rutin di pusat kesehatan masyarakat (Puskesmas). Hasil penelitian menunjukkan bahwa tidak ada perbedaan yang signifikan dalam IMT remaja setelah intervensi pada kelompok kontrol dan eksperimen (nilai p > 0,05). Ada perbedaan yang signifikan dalam pengetahuan remaja setelah intervensi pada kelompok kontrol dan eksperimen (nilai p< 0,05). Aplikasi Nutrikost dapat digunakan dalam pendidikan gizi untuk remaja. Perawat komunitas dapat meningkatkan pengetahuan remaja tentang gizi menggunakan aplikasi ini.
Kata Kunci: Aplikasi Nutrikost, Intervensi Keperawatan Komunitas, Nutrisi Remaja.
Abstract
Currently, the nutritional status of many adolescent remains inadequate. Lack of knowledge about nutritional needs and the ability to prepare nutritious meals are contributing factors. This study aims to conduct a community nursing intervention using the Nutrikost application to improve adolescent nutrition. The study design used a quasi-experimental design with a control group. Data analysis used t-dependent and independent t- test. The sample of this study was adolescents who owned smartphones. In the intervention group, adolescents received community intervention using the Nutrikost app for one month, and then their nutritional knowledge and status were assessed before and after the intervention. The App provides two-way and one-way education and counseling. The Control group received routine health services at the community health center (Puskesmas). The Results showed that there was no significant difference in BMI of adolescents after the intervention in the control and experimental groups (P value > 0.05). There was a significant difference in adolescent knowledge after the intervention in the control and experimental groups (P value < 0.05). The Nutrikost application can use in nutrition education for teenagers. Community nurses can improve adolescents’ knowledge of nutrition using this application.
Keywords: Adolescent Nutrition; Community Nursing Intervention; Nutrikost Applicatio
Hubungan Gaya Hidup dengan Risiko Sindroma Metabolik
Full text linkSindrom metabolik adalah kelompok gangguan dalam proses metabolisme tubuh, yang mencakup obesitas di area pusat tubuh, kadar gula darah yang tinggi, tekanan darah tinggi, serta ketidakseimbangan kadar lemak dalam darah. Kelompok gangguan ini bisa meningkatkan risiko terkena penyakit jantung dan pembuluh darah. Penelitian ini bertujuan untuk mengetahui hubungan antara gaya hidup dengan risiko mengalami sindrom metabolik pada peserta Program Pengelolaan Penyakit Kronis (PROLANIS) di Puskesmas Kartasura. Penelitian ini menggunakan metode kuantitatif dengan pendekatan Cross-sectional. Populasi penelitian terdiri dari 100 orang lansia yang tergabung dalam PROLANIS, dan 80 dari mereka dipilih menggunakan rumus Slovin dengan tingkat kesalahan 5%. Data dikumpulkan melalui kuesioner gaya hidup yang ter uji valid dan reliabel dengan nilai Cronbach’s alpha = 0,894, serta pemeriksaan fisik berdasarkan kriteria NCEP-ATP III, yaitu lingkar perut, tekanan darah, kadar HDL, trigliserida, dan kadar gula darah puasa. Hasil analisis dengan uji Chi- square menunjukkan 73,8% responden memiliki gaya hidup sehat, namun 56,3% di antaranya masih berisiko mengalami sindrom metabolik (p = 0,150). Dari hasil tersebut, dapat disimpulkan bahwa tidak ada hubungan yang signifikan antara gaya hidup dengan risiko sindrom metabolik, karena berbagai faktor seperti usia, jenis kelamin, tingkat pendidikan, dan kondisi biologis juga turut memengaruhi
Optimization of Production Scheduling Using Machine Learning: A Systematic Literature Review
Full text linkModern production systems are increasingly complex, requiring scheduling methods that can handle dynamic environments, diverse constraints, and large-scale operations. Traditional approaches often lack flexibility, while machine learning (ML)–based methods, despite their potential, still face limitations related to scalability, generalizability, interpretability, and computational efficiency. This study presents a systematic literature review of 77 primary studies published between 2014 and 2024, conducted in accordance with the Kitchenham and Charters framework. The review analyzes major research outlets, commonly applied ML techniques, reported performance, and proposed enhancements. Reinforcement learning, particularly deep reinforcement learning, dominates the literature, with methods such as Q-Learning, Deep Q-Networks, and Proximal Policy Optimization showing promise for dynamic scheduling. However, challenges remain regarding convergence speed, data requirements, reward design, and real-time adaptability. Future research should focus on scalable, adaptive, interpretable models and tighter integration with real-time data and Industry 4.0 systems.
Analisis Beban Kerja Mental dan Fisik untuk Upaya Pengendalian Kelelahan di CV. XYZ
Full text linkCV. XYZ is a manufacturing company in East Java that produces various types of concrete, including concrete roof tiles. The contract work system with half-day work hours often causes production targets to be missed, especially for workers who excuse themselves due to illness. This condition has an a impact on increasing the pysical and mental workload using a cardiovascular load (CVL) method and the mental workload using NASA-TLX. The results show that worker 3 at the roof tile printing station 1 had that highest %CVL value, namely 70,53%, and decreased to 59,25% after improvements were made. Meanwhile, worker 4 at the roof tile printing station 2 obtained the highest NASA-TLX score of 80,33, which then decreased to 72,33. This study recommends increasing discipline in the use of PPE and placing workers according to age to improve working conditions
Analisis Tata Letak Fasilitas Produksi Kerupuk untuk Meningkatkan Produktivitas (Studi Kasus: UD.MAWAR)
Full text linkUD. Mawar is a small-scale cracker manufacturing enterprise located in Menganti, Gresik, which requires efficient material flow to support its daily production activities. However, the existing facility layout presents inefficiencies such as long travel distances, backtracking, and suboptimal space utilization, resulting in increased transfer time, high material handling costs, and reduced productivity. This study aims to redesign the production layout using Activity Relationship Chart (ARC), Activity Relationship Diagram (ARD), supported by simulation modeling with FlexSim 2019. Findings show that the proposed U-Flow layout reduces monthly material travel distance from 11,616 m to 4,800 m (58.7%), decreases transfer time from 100.17 to 88.33 minutes (11.8%), and lowers handling costs from IDR 363,000 to IDR 150,000 (58.7%). Productivity increases from 239.5 to 271.7 kg/hour (13.4%). The redesigned layout is recommended to enhance operational efficiency
Pemetaan Prioritas Pengembangan Kereta Api Barang Berbasis Sebaran Volume Angkutan di Indonesia
Full text linkThis study maps development priorities for rail freight in Indonesia based on the spatial distribution of freight volume by major island groups. A descriptive quantitative approach was applied using secondary data on rail freight volume (thousand tons) across five island groups. The analysis includes volume tabulation, share calculations, Java-to-other regions dominance ratios, and a Java versus non-Java aggregate comparison. Results indicate a total of 33.0 million tons, dominated by Java at 18.5 million tons (56.06%), followed by Sumatra 7.2 (21.82%), Kalimantan 4.1 (12.42%), Sulawesi 2.3 (6.97%), and Bali–Nusa Tenggara 0.9 (2.73%). The dominance ratio of Java reaches 20.56 over Bali–Nusa Tenggara and 8.04 over Sulawesi, while non-Java accounts for 43.94% (14.5 million tons). These findings support prioritizing rail freight development outside Java through strengthened logistics nodes and intermodal integration.
Analisis Evaluasi Kualitas Air pada Proses Instalasi Pengolahan Air Limbah (IPAL) di Salah Satu Rumah Sakit Wilayah Surabaya Barat
Full text linkHospital wastewater has characteristics that distinguish it from wastewater generated by other human activities. The purpose of this study is to analyze and evaluate the operation of Hospital Wastewater Treatment Plants in West Surabaya and assess how well they affect the quality of the wastewater they produce. The research method applied is direct observation of the WWTP process and discussion with the person in charge of the hospital's WWTP in West Surabaya. The evaluation results show that some WWTP process units are operating according to standards, but some process sections show a decrease in efficiency, which impacts the quality of the water produced. The average removal rate for the parameters BOD5 was 95.03%, COD was 93.73%, NH3-N was 99.9%, and PO4 was 96%. These results indicate that all parameters meet the applicable quality standards and optimization of the maintenance of the WWTP system is required
Analisis OEE Mesin Kemasan Karton di UPT Provinsi Jawa Timur
Full text linkThis study evaluates the effectiveness of four main carton packaging production machines (slitter, slotter, die-cutter/pond, and board-to-board laminator) at a Provincial Technical Unit in East Java using Overall Equipment Effectiveness (OEE) within the Total Productive Maintenance framework. A quantitative descriptive approach was applied based on historical data from October 2025, including scheduled production time, downtime, output, defects, and ideal cycle time. OEE was calculated through Availability, Performance, and Quality components. The results show that average monthly OEE ranged from 18.75% to 32.39% when all days were considered, mainly due to several days with available time but zero output, which sharply reduced Performance and Quality. In contrast, on actual production days (output > 0), Availability remained high (94.52%–96.17%) and Quality was excellent (98.06%–100.00%). The die-cutter achieved an average OEE of 86.38%, meeting the world-class benchmark, while other machines ranged from 65.22% to 75.01%, indicating improvement opportunities in Performance