https://newinera.com/index.php/JournalLaMultiapp/issue/feedJournal La Multiapp2025-02-13T10:14:17+07:00Urfan Taghiyevu.taghiyev@newinera.comOpen Journal Systems<p>International <strong>Journal La Multiapp</strong> ISSN 2721-1290 (Online) and ISSN 2716-3865 (Print) includes all the areas of research activities in all fields Engineering, Technology, Computer Sciences, A<span class="tlid-translation translation" lang="en"><span class="" title="">rchitect</span></span>, Applied Biology, Applied Chemistry, Applied Physics, Material Engineering, Civil Engineering, Military and Defense Studies, Photography, Cryptography, Electrical Engineering, Electronics, Environment Engineering, Computer Engineering, Software Engineering, Electromechanical Engineering, Transport Engineering, Mining Engineering, Telecommunication Engineering, Aerospace Engineering, Food Science, Geography, Oil & Petroleum Engineering, Biotechnology, Agricultural Engineering, Food Engineering, Material Science, Earth Science, Geophysics, Meteorology, Geology, Health and Sports Sciences, Industrial Engineering, Information and Technology, Social Shaping of Technology, Journalism, Art Study, Artificial Intelligence, and other Applied Sciences.</p>https://newinera.com/index.php/JournalLaMultiapp/article/view/1841Prediction of Hydropower Plant Electricity Production Dependence on Weather Conditions Using the SARIMAX Model2025-01-31T09:27:40+07:00Dennis Hasnan Zulfialdadennis.zulfialda@pln.co.idCatur Arie Nugrohocatur.nugroho@pln.co.idHakim Luthfi Malasanmalasan@itb.ac.id<p><em>Electricity production from Hydroelectric Power Plants (PLTA) that depends on the water capacity in the dam. The water capacity depends on uncertain weather conditions such as drought caused by the El Niño Storm, which has an impact on the lack of water supply that enters the hydropower turbine which is then converted into electrical energy. Accurate predictions are needed to be able to mitigate existing weather fluctuations. In this study, the SARIMAX model on electricity production data integrated with weather data for 4 years from January 2020 to December 2023. The SARIMAX model with optimal parameters (p=0, d=1, q=1, P=1, D=0, Q=1, s=12) provides quite satisfactory prediction results for hydropower power production. SARIMAX obtained MSE values of 0.00101, MAE 0.0274, and RMSE 0.0318. The study also highlights the significance of accurate prediction of hydropower production, emphasizing the importance of external factors such as weather in particular El Niño. Understanding and predicting weather patterns is critical to the power generation system of hydropower in making decisions and optimizing the operation of the electricity system efficiently.</em></p>2025-01-30T11:15:09+07:00Copyright (c) 2025 Journal La Multiapphttps://newinera.com/index.php/JournalLaMultiapp/article/view/1785Analysis of Cleaning Service Work Postures to Reduce Musculoskeletal Injuries with the Posture Evaluation Index Approach2025-01-31T09:27:41+07:00Sevialita Debora20032010037@student.upnjatim.ac.idAkmal Suryadi20032010037@student.upnjatim.ac.id<p><em>Ergonomics is one of the important concepts to be applied in the work environment in achieving occupational safety and health. Work postures during work that arise due to the active movement of several limbs with postures that are not ergonomic can pose a risk to workers. Musculoskeletal injuries generally occur due to excessive muscle contractions due to poor work attitudes and the provision of workloads that are too heavy with a long duration of loading. With the aim of this study is to determine the correct work posture using the Posture Evaluation Index so as to prevent and reduce Musculoskeletal injuries in Cleaning Service Employees at Hang Tuah 5 Sidoarjo High School. With the method used is PEI, which is a score parameter in the assessment of work postures included in the OWAS method and integrated with other studies such as RULA and REBA. In this study with a total of 10 employees in lifting gallons / goods, it can be seen that the unergonomic work posture resulted in a PEI value of 2.791 including the high category and improvements must be made immediately in the workplace area.</em></p>2025-01-30T11:26:20+07:00Copyright (c) 2025 Journal La Multiapphttps://newinera.com/index.php/JournalLaMultiapp/article/view/1814Digitalization of Correspondence Information Systems Using Scrum Model2025-01-31T09:27:42+07:00Yunita Ardillayunita.ardilla10@gmail.comAhmad Khairul Hakimkhairul.hakim@uinsa.ac.id<p><em>Rapidly developing technology has an important role in organizational development which can support various human activities or performance, namely the performance of employees in an environment whose faculty activities cannot be separated from correspondance activities that are not yet fully optimized and computerized. Conventional mail services make servicess less than optimal and ineffective. Therefore, an information system is needed that is useful for making employee performance more effective in correspondence activities in the form of a correspondence information system in order to speed up performance and improve services to stakeholders. The development method used by researchers is the scrum method, while the research data collection method includes interviews, observation and documentation with descriptive analysis. The results of this research, a web-based correspondence information system design was produced to streamline employee performance, so as to optimize service and speed up performance.</em></p>2025-01-30T11:47:04+07:00Copyright (c) 2025 Journal La Multiapphttps://newinera.com/index.php/JournalLaMultiapp/article/view/1818Relayout of Production Layout to Reduce Material Handling Costs2025-02-13T10:14:17+07:00Mochamad Jordan Dwi Firmansyahjordandwi18@gmail.comErni Puspanantasari Putrijordandwi18@gmail.com<p><em>Despite its long-standing operation, the company faces several issues related to the production floor layout, such as inefficient material flow, high waiting times, and suboptimal space utilization. These problems have led to decreased productivity, time inefficiencies, and an uncomfortable work environment. This study aims to redesign the production floor layout using the Systematic Layout Planning (SLP) method to improve material flow efficiency and productivity. The SLP method helps identify the relationships between activities and design an optimal layout by minimizing material transfer distances, reducing waiting times, and creating a more comfortable workspace. The research results are expected to provide optimal solutions for maximizing the efficiency of material handling distance and time while demonstrating the positive impact of layout changes on material handling costs. This study successfully redesigned the production facility layout to enhance operational efficiency. Changes were made to facilities C, D2, P, G, J, and I, along with the relocation of machine K and the removal of cutting machine H, which was no longer in use. The results showed a significant reduction in material transfer distances, from 23,457.5 meters to 13,194.65 meters per month (a 43.9% reduction). Additionally, material transfer times decreased from 438.41 minutes to 298.23 minutes per month (a 31.98% reduction). A comparison between the initial and proposed layouts revealed a reduction in material handling costs from IDR 269,738 to IDR 206,452 per month, resulting in savings of 23.46%. The layout optimization proved effective in reducing material flow inefficiencies, directly impacting operational cost reduction and productivity improvement. </em></p>2025-01-30T13:28:31+07:00Copyright (c) 2025 Journal La Multiapphttps://newinera.com/index.php/JournalLaMultiapp/article/view/1846Analyzing the Effect of Wind Flow at Openings, Wall Density and Distance of Livestock Cages on the Spread of Malaria Mosquitoes Using Ecotect Simulation2025-02-13T10:13:48+07:00Cornelia Hildegardischildegardis4@gmail.comTeresia Elfichildegardis4@gmail.comTheresia Marselachildegardis4@gmail.com<p><em>The government has set a target for Indonesia to become malaria-free; However, this goal has not yet been fully achieved, particularly in eastern regions such as Sikka Regency in East Nusa Tenggara. One of the factors contributing to the spread of malaria-carrying mosquitoes is the proximity of openings, wall density, and the distance of livestock enclosures from residential buildings, especially when less than 1 meter apart. Based on this, field observations were conducted in malaria-affected locations. These observations were followed by experiments using *Ecotect Analysis* to analyze wind patterns and velocities by comparing the distance between openings, wall density, and the distance of livestock enclosures at 1 meter and more than 5 meters. The study revealed that while distance does not influence wind velocity, it significantly affects wind flow patterns. Greater distances between openings result in broader air circulation patterns, which, in turn, impact the spread of mosquitoes in the area.</em></p>2025-01-30T13:35:12+07:00Copyright (c) 2025 Journal La Multiapphttps://newinera.com/index.php/JournalLaMultiapp/article/view/1850Analysis of Phonska Fertilizer Product Quality Control Using Seven Tools Method With Fmea: A Case Study2025-02-13T10:13:12+07:00Fitria Novi Ariestiyani22032010032@student.upnjatim.ac.idMoch. Tutuk Safirintutuks.ti@upnjatim.ac.id<p><em>This study aims to analyze the quality control of Phonska fertilizer products at Phonska Warehouses II and III of PT Petrokimia Gresik using the Seven Tools and Failure Mode and Effects Analysis (FMEA) methods. Seven Tools are used to identify and map the root causes of production defects through Pareto diagrams, cause-and-effect diagrams, and control charts, while FMEA is used to measure and mitigate potential failures in the production process. The study was conducted during the period April to October 2024 with product defect data collected and analyzed. The results showed that the main defects were no coating oil (34%) followed by mesh (29%), caking (24%), and no color pigment (13%). The implementation of corrective steps based on Seven Tools and FMEA has proven effective in reducing product defects to increase production efficiency and the quality of Phonska fertilizer.</em></p>2025-01-30T13:42:19+07:00Copyright (c) 2025 Journal La Multiapphttps://newinera.com/index.php/JournalLaMultiapp/article/view/1869Analysis of the Effect of Position and Dimension of Infrared Burner on Heat Distribution and Efficiency of Butterfly Pea Flower Drying Oven2025-02-13T10:12:42+07:00Miftakhul Jannah Febrianajannahfebrianamiftakhul@gmail.comDamora Rhakasywirhakasywi@upnvj.ac.idFahrudin Fahrudinfahrudin@upnvj.ac.id<p><em>Drying is a process of reducing the moisture content of materials using thermal energy. A drying oven equipped with infrared burner technology offers improved efficiency for drying butterfly pea flowers (Clitoria ternatea); however, uneven heat distribution remains a challenge. This unevenness can result in non-uniform drying, prolonged drying times, and reduced final product quality. This study employs Computational Fluid Dynamics (CFD) simulations to model the heat transfer process within the drying oven. Six different configurations of burner positions and dimensions were examined to evaluate their effects on heat distribution and drying rates. The results indicate that more uniform heat distribution is achieved with non-aligned burner positions, while larger burner sizes generally produce better heat distribution and faster drying rates. This research highlights the importance of optimizing burner position and dimensions to maximize drying efficiency and ensure consistent product quality.</em></p>2025-01-30T13:52:24+07:00Copyright (c) 2025 Journal La Multiapphttps://newinera.com/index.php/JournalLaMultiapp/article/view/1793Innovation of Al-Quran Learning Platform with Deepspeech Artificial Intelligence Technology Using Design Sprint Method2025-02-13T10:12:10+07:00Hajon Mahdy Mahmudin6047231059@student.its.ac.idEmmy Pratiwiemmy.p@its.ac.id<p><em>The development of the digital world is increasingly rapid, especially in the era of Industry 4.0 which is marked by advances in information technology. One application of this technology is in learning the Qur'an, the holy book of Muslims which contains divine guidance. This study explores the potential of artificial intelligence (AI) technology, especially Deep Speech, in developing an interactive, adaptive, and easily accessible Qur'an learning platform. This study aims to overcome illiteracy of the Qur'an and improve understanding of the messages of the Qur'an among Indonesian Muslims. Some of the challenges faced in learning the Qur'an in Indonesia include limited accessibility and inadequate learning experiences. This study identifies these problems and offers solutions through the use of AI Deep Speech technology in mobile applications. This technology is expected to increase the effectiveness and interactivity of Qur'an learning and help overcome the barriers of illiteracy of the Qur'an. The results of this study are expected to provide significant benefits for both academics and practitioners in the fields of education and technology. The expected benefits include contributing to the eradication of illiteracy in the Qur'an, the development of AI applications in Qur'an learning, increasing the effectiveness and accessibility of learning, and the development of design sprint methods in the development of technological products. The training model uses Deep Speech supported by TensorFlow, with 30% of the samples used as a validation set to prevent overfitting. The research approach combines qualitative and quantitative methods to gain in-depth insights into user needs and challenges. </em></p>2025-01-31T13:56:05+07:00Copyright (c) 2025 Journal La Multiapphttps://newinera.com/index.php/JournalLaMultiapp/article/view/1878Design of Distributor Performance Measurement System Using Balanced Score Card Method2025-02-13T10:11:42+07:00Deri Apriliyantoderiapriliyanto@gmail.comBambang Syairudinbambangsyairudin01@gmail.com<p><em>The research designs an extensive performance measurement system for distributors of PT Semen Indonesia Tbk by employing the Balanced Scorecard (BSC) methodology. The research examines how the company has struggled to reach Revenue, Sales Volume and EBITDA targets because bulk cement sales experienced a 13.5% rise in demand yet did not fulfill RKAP expectations. The research targets distributor performance assessment since distributors substantially boost company sales beyond direct sales activities. BSC provides organizations with a method to create distributor-level metrics that support corporate objectives through financial and customer and internal process and learning and growth criteria. The study extends key performance indicators (KPIs) from the Corporate Sales Group through multiple levels to distributor performance metrics which include volume while measuring revenue together with market share and customer satisfaction as well as operational efficiency. The introduction of this system during 2024 effectively boosted distributor performance through its 101.6% success in meeting sales targets along with 0.2% higher market share achievement. The research offers final recommendations that support ongoing personnel training as well as periodic KPI socialization alongside plans for additional studies to advance performance assessment systems across the Corporate Sales Group.</em></p>2025-01-31T14:10:06+07:00Copyright (c) 2025 Journal La Multiapphttps://newinera.com/index.php/JournalLaMultiapp/article/view/1881Analysis Implementation Human and Organizational Performance Uses Evaluation Maturity Level in Animal & Nutrition Health Business2025-02-13T10:11:10+07:00Noverto Marlin Suyono Sitohangnovertositohang@gmail.comAdhithya Sudiarnoadhithyasudiarno@gmail.com<p><em>This study analyzes the implementation of Human and Organizational Performance (HOP) using maturity level assessment in the Animal & Nutrition Health business of PT Cargill Indonesia. The research focuses on evaluating the impact of HOP integration, including leadership, training, communication, incident management, and risk assessment programs, on safety culture and compliance. Data collection involved surveys, structured interviews, and incident trend analyses before and after HOP deployment. Findings reveal significant improvements in safety maturity levels, incident reduction, and the effectiveness of corrective and preventive actions. The study emphasizes the critical role of organizational culture in fostering safety compliance and offers recommendations for enhancing safety practices.</em></p>2025-01-31T14:17:15+07:00Copyright (c) 2025 Journal La Multiapphttps://newinera.com/index.php/JournalLaMultiapp/article/view/1852Quality Control of Paint Tube Products Using Six Sigma and FMEA Methods2025-02-13T10:10:37+07:00Nasywa Shabrina Khunaifi22032010003@gmail.comMoch. Tutuk Safirintutuks.ti@upnjatim.ac.id<p><em>PT XYZ is facingproduct quality challenges, especially visual defects in 25 kg pail tubes such as unmold tubes, jetting tubes, and IML on overlapping tubes with unmold tubes reached 55%. This study aims to analyze the main causes of defects in paint tube products at PT XYZ. The methods used are Six Sigma and FMEA with secondary data from the type of 25 kg tube defects in the last 3 months, involving 15 samples with 3 types of defects. The results show that material, mold, machine, and human factors contribute to defects. The Six Sigma value is 3.36, which is below standard. Recommendations for quality improvement are given to reduce the defect rate, with the highest RPN being 240 for unmold tubes.</em></p>2025-02-07T00:00:00+07:00Copyright (c) 2025 Journal La Multiapphttps://newinera.com/index.php/JournalLaMultiapp/article/view/1817Analysis of Plate Raw Material Control with Continuous Review System Method2025-02-13T10:09:58+07:00Devara Priya Ganendradevarpr22121@gmail.comEnny Aryannyennysr43@gmail.com<p><em>In today's era of globalization, many new companies have emerged, both companies engaged in services, manufacturing, and trade. One of the largest assets in the company PT. XYZ is raw material inventory. Raw material inventory is goods that are stored and used for the production process that are adjusted to the usage schedule. Therefore, in order to avoid high raw material inventory costs, the company must have a proper raw material inventory system by using the proposed method as a comparison, namely the continuous review system method. Plate inventory control was obtained in August 2023 - July 2024 with a total inventory cost using the company method of IDR 292,324,000 and the Continuous Review (s, Q) System method of IDR 144,722,000 with cost savings of IDR 147,602,000 and a cost reduction percentage of 50.4%. After forecasting the plate requirements for August 2023 - July 2024, plate inventory control was obtained with an order quantity of 6,560 sheets and a reorder point of 846 sheets with a total inventory cost of IDR 220,902,000.</em></p>2025-02-07T10:53:32+07:00Copyright (c) 2025 Journal La Multiapp