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Journal Of Engineering Sciences (Improsci)
Published by Ann Publisher
ISSN : 30323452     EISSN : 30317088     DOI : https://10.62885/improsci.v1i1
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Journal Of Engineering Sciences (Improsci) merupakan peer-reviewed jurnal yang mempublikasikan artikel-artikel ilmiah dalam bidang industri. Artikel-artikel yang dipublikasikan di Jurnal Improsci meliputi hasil penelitian ilmiah asli (prioritas utama), artikel ulasan ilmiah yang bersifat baru (tidak prioritas), serta hasil kajian dalam bidang industri.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 63 Documents
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Cabinetware Employee Work System: Case Study at CV Diamond, Bandung, Indonesia Nuzulan, Faza Firdaus; Shafira Putri, Adeela; Daniel Godjali, Vincentius; Archer, Raphael; Susanto, Sani; Yogasara, Thedy
Journal of Engineering Sciences Vol 2 No 4 (2025): Vol 2 No 4 February 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i4.628

Abstract

Background. The problems found in CV Diamond Cabinetware stem from the fact that all production activities for furniture and door handles are carried out using human labor, assisted by several machines. The factory's machines include bending, pounding, stamping, drilling, grinding, and hand shears. Aim. This study evaluates the current work system and designs ergonomic improvement solutions to reduce the risk of musculoskeletal disorders (MSDs). Data were collected through direct observation, semi-structured interviews, and workers completing the Nordic Body Map questionnaire. Methods. The risk analysis was carried out using the Rapid Entire Body Assessment (REBA) method, and the results showed a high level of ergonomic risk at specific workstations. Results. Based on the analysis results, improvements were made to ergonomic chairs and tables using SolidWorks software. Proposed improvements were evaluated through Human CAD simulations using CATIA V5 to assess the effectiveness of the design in reducing the risk of injury. Conclusion. The study's results show that the proposed ergonomic design has improved work posture, reduced physical stress, and improved employee comfort. Implementation. This study makes an essential contribution to the application of ergonomics in small-medium industries and is expected to be a reference for developing healthier and more productive work systems.
Modern Technologies in Enhancing Infrastructure Sustainability: A Comprehensive Review Jawad, Zainab Qusay; Ali, Mustafa
Journal of Engineering Sciences Vol 2 No 4 (2025): Vol 2 No 4 February 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i4.642

Abstract

Background. This article analyzes contemporary infrastructure sustainability trends, focusing on using modern technology to enhance building project sustainability. Aim. AI and IoT technologies improve infrastructure management by monitoring systems and predicting maintenance requirements. Smart materials like self-healing concrete and high-performance concrete extend structural life and reduce maintenance costs, boosting project sustainability. Methods. Innovative water management methods like rainwater collecting and wastewater reuse help urban projects save water. Result. Innovative building technology like 3D printing reduces material waste and boosts efficiency. However, switching to renewable energy sources like solar and wind energy reduces environmental effect and non-renewable energy usage. Conclusion. Previous studies show that new technologies like AI and 3D printing lower building costs and enhance environmental efficiency. Implementation. To make cities more climate-resilient, future research should produce smart materials, improve water and energy management, and integrate decentralized energy systems.
Ecobrick Sofa Design Is Environmentally Friendly Using The House Of Quality Method And The Boston Consulting Group (Bcg) Method utami, Arie; Johan, Johan; Prasetyo, Tri Budi; Amalia, Mia
Jurnal Improsci Vol 2 No 2 (2024): Vol 2 No 2 October 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i2.376

Abstract

Plastic is one of the longest decomposing types of waste with a decomposition time of up to 10 centuries. Plastic waste that is difficult to decompose can be minimized by using ecobrick techniques. This ecobrick technique aims to turn plastic waste that was initially worthless (zero value) into a product that has added value. This study uses four methods, namely the House of Quality (HOQ), Quality Function Deployment (QFD), Slovin, and Boston Consulting Group (BCG) methods. These methods are used to determine product planning and development, consumer desires, product position in market share, and systematic evaluation of its ability to produce products to satisfy consumers. This study involved 100 respondents obtained from the slovin method. Where the respondents are positioned as research subjects. The respondent data was obtained from distributing questionnaires through google forms. The data collected is calculated and analyzed for unique and minimalist sofa House of Quality (HOQ). The results of this study inform that customer feedback on the product or Voice of Customer can affect quality control and improvement by using the statistical method or Statistical Quality Control. Furthermore, unique and minimalist sofa companies each have different product development focuses. Following up on the findings in this study, the company can adjust the needs and desires of these consumers to the design and service standards as well as the obstacles that may occur.
The Power Factor Optimization with Cos Phi Mode Trainee Pratama, Aziz Yulianto; Wahyu Asry, Dieta; Usman, Dani; Tulus Asmoro, Purwandito; Siswoyo , Feri
Jurnal Improsci Vol 2 No 2 (2024): Vol 2 No 2 October 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i2.475

Abstract

The power factor cos phi measures the efficiency of using electrical power in a system. A low power factor indicates the presence of high reactive power consumption, which can lead to increased energy losses and operational costs. To overcome this problem, an effective power factor regulation system is required. This research designed and developed the Cos Phi Trainer, which operates in two modes, manual and automatic, to improve the power factor at an electrical load. The system is designed to give users a practical understanding of measuring and improving power factors by setting up compensation capacitors. In manual mode, the user directly sets the value of the capacitor used to fix the power factor. While in automatic mode, the system uses current and voltage sensors to measure the power factor value in real-time and automatically adjusts the capacitor to achieve the optimal power factor. The trainer has an easy-to-use interface and a measurement panel that displays important parameters such as current, voltage, active power, reactive power, and power factor. The test results show that the system can significantly increase the power factor in manual and automatic modes. Thus, this Cos Phi Trainer is an effective tool for training in the laboratory of Indorama Engineering Polytechnic and teaching about electrical power management and energy loss reduction in the electrical system.   Keywords: Power factor, manual, active power, reactive power, trainer
Terje Aven Availability Model Application to the N-1 System with One Unit of Backup Towing Motor Components for Kiln Machine Preventive Maintenance Adianto, Hari; Nashar, Gifari Bayu; Susanto, Sani; Syah Tjaja, Arief Irfan
Journal of Engineering Sciences Vol 2 No 2 (2024): Vol 2 No 2 October 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i2.492

Abstract

The kiln machine is one of the pieces of machinery used to produce granite tiles. One of its many crucial components is the towing motor. The production process requires a high-performance and easily accessible kiln unit because it lasts for 24 hours. As a result, there will be less downtime since the extra towing motor can take the place of the damaged one. The Terje Aven availability model calculates the number of towing motor reserves. The availability of kiln equipment has not yet achieved its full potential because the company currently has six backup towing motors.
Study on Supply Chain Rearrangement to Improve Supply Chain Performance of Sambal Sauce in Company X Case Study using the Enterprise Architecture Design method that utilizes Industrial Revolution 4.0 Technology based on Hybrid Technology Hermawan, Andri; Idris, Mohd Razif; Binti Mustaffa Bakry, Faridah
Journal of Engineering Sciences Vol 2 No 2 (2024): Vol 2 No 2 October 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i2.493

Abstract

Company X is a large enough producer of Sambal Sauce to supply Meatball traders in Indonesia. Many problems in this supply chain include the occurrence of unhealthy competition between internal networks, both between agents and other networks that intersect between supply regions, market prices are not uniform, the availability of field products is not maintained, the uncertainty of delivery from the previous supply from the Supply Chain, high Debts and Receivables from Distributors, the certainty of product delivery to the Supply Chain from Producers, The certainty and stability of the delivery of Sambal Sauce Raw Materials to the Factory, unstable quality of raw materials, and many other problems. Of course, this needs to be fixed immediately, considering that it will be a turning point for product returns if this problem continues. The following is a deeper study of what and why this happens, how to solve the problem, and concrete efforts to solve the problem analytically using the Enterprise Architecture Design method by utilizing Hybrid Technology-based Industrial Revolution 4.0 Technology.
Evaluation of the Multiple Regression Analysis Algorithm on Stock Market Prediction Setiawan, Mohamat; Maturidi, Ade Johar; Novianti, Dian
Journal of Engineering Sciences Vol 2 No 2 (2024): Vol 2 No 2 October 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i2.494

Abstract

Financial time series is one of the most challenging applications of modern time series forecasting. The financial time series is closely related to noise, non-stationary, and deterministic chaos. The characteristics suggest that no complete information can be obtained from the past behavior of financial markets to fully capture the dependency between future prices and that of the past. The data collection method was collected from the Stock Market Online Application "MetaTrader version 4" type "Daily" with a time range from "03/09/2001 to 25/07/2012", as many as 2052 data", with the attributes "Date, Open, High, Low, Close, Volume" with the main attribute "Close" using the Support vector machine algorithm, artificial neural network, and multiple linear regression. The conclusion of the value that is close to the series value is the value by testing on the support vector machine algorithm, with the parameter for the RMSE value that is close to the "0" value obtained from the measurement results on the SVM algorithm on the RBF kernel (radial base function) with a value of "gamma" γ = 100 with the value of RMSE = 0.000, and SE = 0.000. with prediction accuracy error = 0.976
Model of Start-Up Business with Considering Household Spending using System Dynamics Approach Renosori, Puti; Prasetyaningsih, Endang; Satori, Mohamad
Journal of Engineering Sciences Vol 2 No 3 (2024): Vol 2 No 3 December 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i3.537

Abstract

This study investigates a family-run start-up business in which the company's finances are not separate from the family’s finances. The start-up business owner relies on the company's finances to cover the household spending from the beginning because the owner is not paid by the company. As a result, the company fails to grow and is on the verge of bankruptcy. This study focuses on developing a start-up business model that considers household spending as a decision variable allowing it to grow and develop. The System Dynamics approach was chosen due to the complexity of the trade-offs between variables in a start-up business model. The Cassava meatball start-up business run by Madrasah is used as an example. The developed model simulates a variety of treatments, including giving debt to develop start-up businesses. However, this debt can be burdensome because the company must pay it. The findings indicate that the use of income to cover household spending at the beginning is inappropriate while providing debt to revive the startup must be sufficient and timely. The developed model is expected to assist start-up business owners in selecting a variety of alternative policies that will allow the business to grow, develop, and be sustainable.
Evaluation of Irrigation System Performance In Ujungjaya Irrigation Area Sumedang Regency Siswanto, Donny; Sulistijo, Sulistijo; Nurdiyanto, Nurdiyanto
Journal of Engineering Sciences Vol 2 No 3 (2024): Vol 2 No 3 December 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i3.546

Abstract

Water is a human life that must be managed and maintained for sustainability. Water for agricultural businesses can be fulfilled through rainwater or an irrigation system, starting from the dam flowing through the network or irrigation canal from the main canal to the tertiary plots of rice fields. For this reason, it is necessary to evaluate the performance of the existing irrigation system. According to the Regulation of the Minister of PUPR RI No.12/PRT/M/2015, it can be stated that the Performance Condition of the Ujungjaya Irrigation System in Sumedang Regency currently has a performance with a value of 43.41% with Poor Performance Criteria (< Value of 55%), while the Real Needs for Operation and Maintenance (AKNOP) of the Ujungjaya Irrigation Area per year is Rp.3,073,990,000,- or Rp. 1,917,648,,- rounded up to Rp.1,900,000,- per hectare (Ha). With the division for Operational Administration activities, OP activities are Rp. 709,300,,- or around 23.07%, the rest, which is Rp. 2,364,690, or around 76.93% must be used for physical maintenance activities
Feasibility Analysis of Capacity Building at CV X Bintaro Branch Fatahillah Ramdhan, R. Adji; Susanto, Sani; Rian Praktikto, Franciscus
Journal of Engineering Sciences Vol 2 No 3 (2024): Vol 2 No 3 December 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i3.557

Abstract

CV X is a company engaged in beauty services such as nail and eyelash treatment. CV X has a problem: a lack of salon capacity due to the high customer demand. This caused lost sales of IDR 188,597,000 in 2022 because customers were rejected when they wanted to book due to full capacity. Therefore, the owner of CV X plans to increase the capacity of the Bintaro branch to minimize the occurrence of lost sales, which can cause significant losses. To improve this capacity, an analysis is needed to precede it so that CV X can determine whether this capacity-building plan is feasible from various aspects to minimize failures. The feasibility analysis of this capacity building will be carried out on five main determining aspects: market and marketing, operational, legal, financial, and environmental. The market and marketing aspects discuss the company's competitive strength, the potential for market growth, and marketing strategies. The operational aspect discusses the current capacity, plans to increase capacity and layout, and the number of human resources needed. The legal aspect discusses the best form of business entity and the necessary documents and requirements. The financial aspect discusses the feasibility of investment with projected demand estimates, HPP calculations, income statements, and cash flow statements. It assesses feasibility based on Net Present Value (NPV), Internal Rate of Return (IRR), and Payback Period indicators. After the research activities were conducted, the results were obtained that the market aspect was feasible because it had a significant market share and knew the best way to maximize the potential market share. The operational aspect is feasible because it knows the layout plan and the details of the number of workers needed. The legal aspect is feasible because it meets the legal requirements and knows the best form of business entity. The financial aspect is feasible because the projected value generated in the economic calculation exceeds all the indicators used: the NPV value of Rp3,139,234,978, IRR of 219%, and Payback Period of 0.66. The environmental aspect is said to be feasible because it can handle all the waste appropriately produced so that it does not pollute the surrounding environment.

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