cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Desy Lusiyana
Contact Email
improsci@gmail.com
Phone
+6281324918200
Journal Mail Official
improsci@gmail.com
Editorial Address
Jl. Rajawali Gg.Elang 5 No.1 Drono, Sardonoharjo, Ngaglik, Sleman, DIY, Indonesia
Location
Kab. sleman,
Daerah istimewa yogyakarta
INDONESIA
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 74 Documents
 4   5   6   7   8 
Preventive Maintenance Of The Cooling System On The Main Engine On The Mt. Ratu Zainab Nalle, Carles YA; Ashar , Ashar
Jurnal Improsci Vol 3 No 1 (2025): Vol 3 No 1 August 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i1.856

Abstract

Background. The main drive engine is an energy conversion engine that converts thermal energy resulting from chemical reactions between fuel and air into mechanical energy. The process of burning the fuel occurs due to high air pressure in the combustion chamber. Aims. This research was conducted on the MT ship. Ratu Zainab aims to determine the best practices for preventive maintenance of the cooling system on the main engine and identify the factors that impact her work on the MT ship. Queen Zainab. Methods. The method used is qualitative descriptive. The study's results highlight the importance of regular maintenance for the freshwater cooling system to ensure optimal engine performance. The main steps include preparing maintenance schedules, creating checklists, and conducting periodic inspections. Result. Common problems that often occur include a lack of suction in the cooling pump, decreased impeller performance, dirt accumulation in the seals, and leaks in the intercooler cover, thus affecting the cooling system of the main engine on the MT. Ratu Zainab's ship. Daily and monthly maintenance is recommended to detect damage early. Factors that affect the performance of the cooling system include corrosion, clogging of the cooler by dirt, and wear and tear on the standard components. Proper preventive maintenance can reduce damage, improve operational efficiency, and extend the life of machine components. Cooling system failure can lead to overheating, reduced engine efficiency, and severe component damage. Therefore, implementing preventive maintenance is a strategic step to prevent unexpected damage. Conclusion. This research highlights the importance of proactive maintenance and a thorough understanding of seawater cooling systems to ensure the optimal and safe operation of ships. Implementation. Thus, implementing proper preventive maintenance on the main engine cooling system is a crucial effort in ensuring the safety, efficiency, and reliability of the overall ship operation.
Work System Improvement in the Production Process Station Area PT SMS Using Macro Ergonomics and Design (MEAD) to Increase Productivity Setiawan, Heri; Susanto, Sani; Rinamurti, Micheline; Alfian, Achmad; Pratama, Yohanes Dicka; Budiarto, Dominikus
Jurnal Improsci Vol 3 No 2 (2025): Vol 3 No 2 October 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i2.939

Abstract

Background. PT SMS produces bottled drinking water (amdk) in gallons and cups with Vit and Forme brands for gallon packaging and Airnes, Forma, and OK Oce brands in cup packaging. In identifying the problem at PT SMS, it was found that the work system is not well-designed and lacks ergonomics at several workstations, which has an impact on achieving less than optimal daily productivity. The output per work shift set by the company is 2,100 gallons and 3,150 boxes for cup packaging, but in fact, it can only produce approximately 2,050 gallons and 3,000 boxes. Aim. Analyze the factors that cause the work system to be less effective and less ergonomic. The formulation of work system factors encompasses physical work environment factors, equipment, infrastructure, machinery, workload factors, and organisational factors. Methods. The Macro Ergonomic Analysis and Design (MEAD) method is used to identify factors that affect the work system and then implement improvements and design changes based on the identified factors. Results. Physical work environment factors and organisational factors are problems within the work system at PT SMS, as the workspace designated for the production workflow lacks ergonomic support for employees' postures while working, and task management is inadequate. The machinery has not been crafted based on the anthropometric measurements of the workers. Oversight is absent for the work being done, and the standard time required for the production process has yet to be established. So that it increases productivity per work shift at PT. SMS is not optimal and experiences over time. Conclusions. Redesign of physical work environment facilities, scheduling of rest periods, and organisational factors through supervision from PT SMS resulted in output per shift meeting the standards set by the company.. Implication. The application of MEAD can identify factors that cause suboptimal productivity. Redesigning ergonomic physical work environment facilities, scheduling rest periods, and supervisory organisational factors within the company have an impact on optimising productivity, as measured by the output per shift set by the company
Development of an Employee Attendance Management Information System Based on Web and Mobile with Location-Based Service Rizky Prasetyo, Aria; Ikrimach, Ikrimach
Jurnal Improsci Vol 3 No 3 (2025): Vol 3 No 3 December 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i3.947

Abstract

Background. Personnel attendance administration activities at the Karanganyar Regency Education and Culture Office have been integrated with the central system for civil servants, but the attendance method for non-civil servants is not available in a structured manner, so it risks reducing data integrity, being inaccurate, and not allowing real-time monitoring. Aims. This research aims to develop a web-based and mobile-based employee attendance management and scheduling application using Location Based Service in a case study at the Karanganyar Regency Education and Culture Office. Methods. The application that was built provides a presence feature based on the Global Positioning System and a camera for proof of presence photos. Location-based service is used to validate the location of employees when attending to match the predetermined work area. The system is designed using a client-server architecture with a Laravel-based web application for admins, a mobile application for employees, and a centralized database to facilitate data management. Result. The evaluation of the system's functionality is conducted using the black box testing method to assess the suitability of the output results for the specified use scenario. Conclusion. The test results indicate that all application functions meet user needs. Consequently, the developed system is expected to enhance efficiency, ensure data integrity, and offer a more modern and integrated presence solution in the administrative process of non-civil servant personnel within the Karanganyar Regency Education and Culture Office.
Assessing Waste Potential and Greenhouse Gas Emissions from Existing Waste Management Systems: A Case Study of Palembang City South Sumatera of Indonesia Setiawan, Heri; Bangun, Ferdinandus; Budiarto, Dominikus; Pratama, Yohanes Dicka
Jurnal Improsci Vol 3 No 3 (2025): Vol 3 No 3 December 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i3.965

Abstract

Background, Palembang City South Sumatera of Indonesia faces serious waste challenges, generating about 983-1,200 tons daily, 35% plastic and under 10% recycled. Improper disposal drives methane emissions and climate impacts. This study explores low-cost waste-to-energy (WtE) strategies to cut emissions, support a circular economy, and empower communities through sustainable, participatory waste management. Aim, This study analyzes Palembang’s waste generation and GHG emissions to support sustainable and efficient waste management strategies. Methods, This study used mixed methods to assess Palembang’s waste management and emissions, conducted from July-October 2025, data from key stakeholders were analyzed using IPCC Tier 1 Guidelines to compare baseline and intervention scenarios for sustainable community solutions. Results, The analysis revealed that Palembang City South Sumatera of Indonesia generates approximately 1,000 tons of municipal solid waste per day, with organic waste (56%) and plastic waste (24%) as the dominant fractions. Current waste treatment processes, mainly open dumping and limited composting, result in an estimated carbon emission of 420-460 tons CO₂-eq per day. Scenario modeling indicated that implementing a low-cost waste-to-energy (WtE) system and community-based segregation programs could reduce emissions by up to 55%, while generating additional energy potential of 7-9 MWh per day. These findings demonstrate the significant potential of an integrated waste management approach to simultaneously mitigate greenhouse gas emissions and enhance energy recovery in Palembang. Conclusions, Palembang generates 983-1,200 tons of waste daily, mostly food (40.8%) and plastic (20.4%), with 60% sent to Sukawinatan and 40% to Kramasan landfills. Management still relies on open dumping, causing methane emissions of 2,352.9 tons (65,888.2 tons CO₂-eq) valued at about IDR 1.97 trillion. These results underscore the need for integrated, sustainable waste-to-energy (WtE) solutions. Implication, The study guides policymakers in developing low-cost, sustainable waste management through community-based waste-to-energy (WtE) initiatives that reduce emissions and support a circular, resilient city.
Implementation Of Speech Recognition For Voice Command Use Maturidi, Ade Johar; Osman, Didan; Sulaeman, Muhamad
Jurnal Improsci Vol 3 No 1 (2025): Vol 3 No 1 August 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i1.1008

Abstract

Background. Physical limitations of a person sometimes make it impossible to operate a computer with only a keyboard and mouse, Aims. One tool that can be used is a voice command, which is part of speech recognition technology. Methods. The voice signal will be normalized first, and then the coefficient values will be calculated using the Linear Predictive Coding (LPC) and Fast Fourier Transform (FFT) methods. After the coefficient value is obtained, recognition is performed using the backpropagation method of the Artificial Neural Network. Conclusion. The artificial neural network backpropagation method is used because it can adjust its own weights and produce error values that we can determine, thereby improving accuracy. Implementation. This study implements a voice command system using MARF as its speech engine and Java as its programming language.
Implementation Of The Bagging-Based C4.5 Algorithm To Analyze Customer Satisfaction In Electronic Pulse Sulaeman, Muhamad; Setiawan, Mohamad; Irpan, M. Taufiq
Jurnal Improsci Vol 3 No 1 (2025): Vol 3 No 1 August 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i1.1009

Abstract

Background. Many users of Telkom mobile or gadgets in the world, especially in the field of mobile telecommunications technology, provide much convenience for the customer to make purchases of electronic top-up. Aims. Competition among suppliers of telecommunication service providers requires an analysis to determine the level of customer satisfaction with electronic pulses. Methods. In this study, the C4.5 and C4.5 Algorithm Based on Bagging will be used to analyze customer satisfaction, with data collected from 460 customers and 11 variables related to electronic top-up. Conclusion. This research aims to generate customer satisfaction analysis using the C4.5 and C4.5 algorithms, based on the bagging algorithm, to determine an appropriate method for analyzing customer satisfaction with electronic top-up.
State-Owned Enterprises (SOEs) in Construction Services in Indonesia Idris, Mhod Razif; Hermawan, Andri
Jurnal Improsci Vol 2 No 5 (2025): Vol 2 No 5 April 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i5.1026

Abstract

Background. The construction industry plays a strategic role in Indonesia’s economic development, particularly through State-Owned Enterprises (SOEs) that are mandated to deliver national infrastructure projects. Despite their importance, Indonesian construction SOEs continue to face persistent challenges, including low productivity, cost overruns, schedule delays, bureaucratic complexity, and limited organizational agility. Lean Management has been widely recognized as a practical approach to improving efficiency and reducing waste; however, its application in the construction sector has predominantly focused on project-level operations rather than organizational-level readiness. Aims. This study aims to identify the key factors influencing the successful implementation of Lean Management in Indonesian construction SOEs and to assess how these factors interact in determining organizational readiness. Methods. A quantitative research design was employed, with a structured survey administered to 246–250 respondents from six major Indonesian construction SOEs. The study adopts the Lean Construction Maturity Model (LCMM), consisting of 11 main attributes: lean leadership, customer focus, organizational culture, competency, process and tools, change management, work environment, business results, and learning and competency development. Data were analyzed using linear regression to examine relationships among influencing factors and their contribution to Lean Management readiness. Result. The findings are expected to yield a Lean Management Implementation Readiness Index that provides a comprehensive measure of organizational preparedness and highlights critical interdependencies among factors. Conclusion. The study contributes theoretically by extending lean management research to the organizational level within construction SOEs and practically by offering a diagnostic tool to support strategic decision-making, policy formulation, and performance improvement in Indonesia’s construction sector.
Production Quantity Estimation Method in Continuous Line Flow and Discontinuous Line Flow Systems with Barchart Simulation Idris, Mhod Razif; Hermawan, Andri
Jurnal Improsci Vol 3 No 3 (2025): Vol 3 No 3 December 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i3.1035

Abstract

Background. Production quantity forecasting is a crucial element in the planning and control of manufacturing systems, as it directly affects operational efficiency and capacity utilization. Production systems are generally classified into continuous and discontinuous line flow, which differ in process flow characteristics and levels of variability. Aims. This study aims to examine production quantity forecasting methods for both systems using a Barchart simulation approach as a visualization and process time analysis tool. Methods. The research method used is a systematic literature review and conceptual modeling based on production time, cycle time, setup time, and waiting time. Conclusion. The results of the study indicate that Barchart simulation is effective in representing the stability of production flow in continuous line flow systems and identifying process variability and irregularity in discontinuous line flow systems. Implementation. Thus, the Barchart simulation can be used as a simple yet informative tool to support production quantity forecasting based on manufacturing system characteristics.
Analysis of The Design of Thickness Variations of Pressure Cooker Equipment Using A Strainer Muqaffi, Alfan Dabbar; Harmi Tjahjanti, Prantasi; Widodo, Edi
Jurnal Improsci Vol 3 No 3 (2025): Vol 3 No 3 December 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i3.1036

Abstract

Background. In micro, small, and medium enterprises (MSMEs) that make pressure milkfish, the majority still use manual pressure cookers, with the pressure showing that the milkfish is cracked, making it less attractive in terms of performance and appearance. Aims. Therefore, the purpose of this research is to design a presto milkfish pot equipped with a filter. The design uses AutoCAD for 2D drawings and SolidWorks software 2023 for 3D. The results obtained have been used to design pressure-cooker equipment with a filter. Methods. The results of the design of pressure cooker equipment using filters with varying pan thicknesses are for Von Mises stress, displacement (shift)/elongation, strain/strain, and Safety Factor (SF). Result. The analysis of all design results was obtained: (a). The results of the Von Mises stress simulation, with varying pressure cooker thickness, show that the wall thickness is directly proportional to the maximum Von Mises stress. So the wall of the pressure cooker with the greatest thickness (3mm) has the maximum voltage value of Von Mises, also the greatest (978.0 MPa), (b).  The results of the pressure cooker elongation/displacement simulation with varying pressure cooker thickness showed that thickness variation was not significant for elongation/displacement. The average elongation/displacement is 0.008468 mm; the result is quite small, indicating that the thickness of the pan is not related to the elongation of the pressure cooker material at a break or a certain limit (c). The results of the pressure cooker strain simulation with the pressure cooker thickness variation, with a value of 0.004613, indicate that the pressure cooker thickness variation is not significant to the pressure cooker strain, because the strain obtained does not cause a change in the shape of the pressure cooker equipment, even though the pressure cooker wall has a different thickness Conclusion. Safety Factor simulation results/ Factor of Safety (FS) pressure cookers with pressure cooker thickness variations it appears that for the pressure cooker thickness variation, all have an acceptable FS, because the value exceeds the value of 1.
Examination of Harmony Elements In Physically Disabled Families Syakina, Annisa; Sa'adah, Siti; Dewabrata, Bondan
Jurnal Improsci Vol 3 No 3 (2025): Vol 3 No 3 December 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Background. The marriage of a family with a physical disability, both husband and wife or one of them with a physical disability, is not as easy as a family in a normal married condition. The foundation must be religion, because in Islam, marriage is not only a civil contract but also a matter of worship. The Quran describes the bond between husband and wife as the most sacred and strongest bond. Marriage between a man and a woman and uniting to live as husband and wife in the bond of marriage is one of the characteristics of man since he was first created. Method. The method was carried out using 10 respondents from families with physical disabilities who filled out the questionnaire, including (1) how many years they have been married, (2) how communication has occurred so far, and (3) how communication and support between married couples facilitate disability conditions. Questionnaire fill-ins were processed using SPSS. Conclusion. In realizing a harmonious family despite its limitations, it is not an excuse not to fulfill its roles and obligations as a husband and a wife. It is essential to maintain communication with your partner, accept each other, and work together effectively in carrying out daily routines. Implications. The practical implication is that married couples with disabilities can live in harmony and carry out their roles and obligations as husband and wife well, even with their limitations.

Page 7 of 8 | Total Record : 74

 4   5   6   7   8 

Filter by Year

2023 2025


Reset
Filter By Issues
All Issue Vol 3 No 3 (2025): Vol 3 No 3 December 2025 Vol 3 No 2 (2025): Vol 3 No 2 October 2025 Vol 3 No 1 (2025): Vol 3 No 1 August 2025 Vol 2 No 6 (2025): Vol 2 No 6 June 2025 Vol 2 No 5 (2025): Vol 2 No 5 April 2025 Vol 2 No 4 (2025): Vol 2 No 4 February 2025 Vol 2 No 3 (2024): Vol 2 No 3 December 2024 Vol 2 No 2 (2024): Vol 2 No 2 October 2024 Vol 2 No 1 (2024): Vol 2 No 1 August 2024 Vol 1 No 6 (2024): Vol 1 No 6 June 2024 Vol 1 No 5 (2024): Vol 1 No 5 April 2024 Vol 1 No 4 (2024): Vol 1 No 4 February 2024 Vol 1 No 3 (2023): Vol 1 No 3 December 2023 Vol 1 No 2 (2023): Vol 1 No 2 October 2023 Vol 1 No 1 (2023): vol 1 No 1 Agustus 2023 More Issue