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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 78 Documents
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Herbal Treatment Expert System For Ent Disease Diagnosis Using The Certainty Factor Method Based On Android Maturidi, Ade Johar; Fajri, Muhammad Ali; Nurgaha, Deni
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.v3i2.1048

Abstract

Background. Public understanding of ENT (ear, nose, and throat) diseases remains low. Many people still rely on experts manually, resulting in high costs for the general public. Aims. This research was conducted to develop a tool to assist users in diagnosing ENT (ear, nose, and throat) diseases in humans. This tool, an expert system, is designed to diagnose and provide herbal treatment recommendations. Result. This expert system application produces an application program or tool that can be used to diagnose possible ENT diseases in humans based on user-entered symptoms. Conclusion. System testing demonstrated that the system can diagnose ENT diseases based on patient symptoms, despite the uncertainty of those symptoms. Implementation. The diagnostic results are accompanied by a Certainty Factor value, which indicates the level of accuracy and predictability of the possible ENT disease in humans, along with the corresponding herbal treatment.
Digitization Of The Pangeran Cakrabuana Museum: A Website-Based Cultural Asset Management Information System Novianti, Dian; Wicaksono, Freddy
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.v3i2.1049

Abstract

Background. This research discusses the digitization of the Prince Cakrabuana Museum through the development of a website-based cultural asset management information system. The background of this research is that the accessibility and efficiency of museum information management remain limited in conventional ways, which affects the dissemination of information and public museum promotion. Aims. This research aims to design and implement a website-based information system that supports the processes of cultural asset inventory, collection documentation, and digital museum information delivery. Methods. The research method used is a qualitative descriptive case study, conducted at the Cirebon Regency Culture and Tourism Office. Data collection techniques are carried out through observation, interviews, and documentation during Field Work Practice (PKL) activities. Result. The results of the study show that the developed system can manage cultural asset data more structurally, increase public access to information, and support the digital promotion of the Prince of Cakrabuana Museum. Conclusion. The conclusion of this study shows that the application of a website-based information system can improve the efficiency of museum asset management and public interest in the preservation of cultural heritage.
System Dynamics Model of Technology Transition under Resource Constraints: A Catfish Farming Case Prasetyaningsih, Endang; Renosori, Puti; Selamat, Selamat; Wahyudi, Dadan
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.v3i2.1050

Abstract

Background. This study deals with a System Dynamics (SD) model to investigate technology transition under resource constraints, using small-scale catfish farming as a case study. In this context, land availability constitutes the resource constraint. To address this constraint, it is necessary to achieve catfish productivity gains through technological intensification, such as the use of aquaponics. Methods. The SD model captures feedback interactions among production, operating costs, revenue, profit, and reinvestment by setting aside a portion of profits. The SD model's behavior is analyzed by generating six scenarios over 25 years to examine the effects of feed price fluctuations, fingerling price fluctuations, and alternative reinvestment rates. Model outcomes were evaluated using production, profitability, and the benefit–cost ratio (BCR) as an economic performance indicator. Result. The results show that feed and fingerling price fluctuation exerts a strong negative effect on profitability and economic feasibility, while higher reinvestment rates accelerate aquaponics adoption and improve long-term performance. Conclusion. BCR analysis indicates that technology transition in land-limited catfish farming is feasible only when BCR remains above unity, supporting sustained reinvestment. Implementation. The study highlights the importance of reinvestment strategies and feed and fingerling costs management in enabling resilient technological upgrading in spatially constrained aquaculture systems.
Lean Construction: Enhancing Efficiency And Quality In The Construction Industry Idris, Mhod Razif; Hermawan, Andri
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.v3i2.1051

Abstract

Background. Lean Management and Lean Construction have been widely recognized as effective approaches to improving efficiency, reducing waste, and enhancing organizational performance. However, the readiness of construction organizations—particularly State-Owned Enterprises (SOEs)—to implement Lean Management remains insufficiently explored, especially in developing countries. Aims. This study aims to assess the factors influencing Lean Management implementation and to evaluate the readiness level of Indonesian construction SOEs using a quantitative approach. The research adopts Lean Management as its theoretical foundation and applies the Lean Construction Maturity Model (LCMM) as the primary measurement framework to capture organizational readiness comprehensively. Methods. Data were collected through a structured questionnaire distributed to management-level respondents across six Indonesian state-owned construction companies, involving division heads, section managers, staff, and project managers, with a total sample of approximately 250 respondents. The analysis employs linear regression within a structural model to examine the relationships among key readiness factors, including leadership, culture and behavior, competence, continuous improvement support, processes and tools, organizational change, work environment, business results, and learning and competency development. Result. The findings are expected to provide empirical insights into the interdependencies among these factors and to identify critical readiness gaps that may hinder effective Lean Management implementation. Conclusion. This study contributes theoretically by extending the application of LCMM to Lean Management readiness assessment and practically by offering a structured diagnostic framework for SOEs seeking to enhance Lean adoption in the construction sector.
Analysis Of Cadmium (Cd) And Lead (Pb) Levels In Water Samples By Atomic Absorption Spectrophotometry (AAS) At The Lampung Health Laboratory Center Adinda, Calesta; Rustiati, Elly Lestari; Susanti, Iproh; Cicilia, Okferina
Jurnal Improsci Vol 3 No 4 (2026): Vol 3 No 4 February 2026
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i4.1053

Abstract

Background. For sanitary hygiene, water is used for maintaining personal hygiene, such as bathing and brushing, as well as for food washing, dishwashing, and laundry in daily life, so its quality differs from that of drinking water. This study focuses on heavy metal pollution, particularly lead (Pb) and cadmium (Cd), which are known toxic substances harmful to living organisms. Aims. Its purpose is to determine the levels of cadmium and lead in water samples by atomic absorption spectrophotometry at the Lampung Health Laboratory Center, conducted in December 2024-January 2025. T Methods. The method refers to SNI No. 6989.84 of 2019 for 78 samples of sanitary hygiene water by Atomic Absorption Spectrophotometry (SSA). Cadmium (Cd) analysis of 37 samples: 21 were positive for Cd, but none exceeded the threshold limit value of 0.003 mg/L. Conclusion. Meanwhile, the results of the lead (Pb) analysis showed that 1 of 37 samples did not exceed the threshold limit value of 0.01 mg/L, as stipulated in the Indonesian Minister of Health Regulation No. 2 of 2023.
Rubber Ball Theory: An Elastic Model of Production Line Balancing and Its Impact on Supply Chain Performance Kartini, Nuri; Hermawan, Andri; Idris, Mohd Razif
Jurnal Improsci Vol 3 No 4 (2026): Vol 3 No 4 February 2026
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i4.1054

Abstract

Background. Production line balancing is a key element in improving the capacity and stability of manufacturing systems, yet conventional practices often ignore the elastic relationship between production intervals, capacity, and resource structure. This research develops and formalizes Rubber Ball Theory, a theoretical approach that views production systems as elastic entities, where changes in one operational variable trigger compensatory responses in other variables. Aims. The objective of this research is to develop a mathematical model for interval-based production line balancing and analyze its impact on overall supply chain performance. Methods. The research methodology includes developing an interval-based line-balancing optimization model, integrating concepts of bottlenecks and elastic capacity planning, and conducting empirical testing through a manufacturing industry case study. The developed model minimizes the system interval as the primary control variable, accounting for capacity constraints, precedence relationships, and parallel machine configurations. Sensitivity analysis is performed to evaluate the system's response to changes in the target interval and the number of parallel resources. Result. The results show that emphasizing production intervals without adjusting structural capacity leads to system instability and bottleneck displacement, while an elastic approach based on Rubber Ball Theory can sustainably increase production capacity. Furthermore, this approach has been shown to improve the reliability, responsiveness, and efficiency of asset management in the supply chain and contribute to reducing the variability of production flows that trigger the bullwhip effect. Conclusion. The main contribution of this research is the provision of an integrated conceptual and mathematical framework linking production line balancing to supply chain performance through elastic management of production intervals. Implication. These findings provide theoretical and practical implications for designing more adaptive and sustainable production systems and capacity planning.
Improving Food Security and Sustainability in Koperasi Merah Putih: A Conceptual Model of Food Supply Chain Management Widyani, Retno; Kartini, Nuri; Hermawan, Andri; Idris, Mhod Razif
Jurnal Improsci Vol 3 No 4 (2026): Vol 3 No 4 February 2026
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i4.1055

Abstract

Background. Food security and sustainability are key challenges in the modern food system, characterized by fragmented production, high food losses, and weak coordination among supply chain actors. Food Supply Chain Management (FSCM) is a strategic approach to integrating the flow of products, information, and logistics from upstream to downstream. Aims. This study aims to develop a conceptual model of FSCM based on Koperasi Merah Putih, the primary institutional actor in strengthening the food supply chain. Methods. The research method employed a systematic literature review of relevant scientific publications and policy documents. Result. The study results indicate that the Koperasi Merah Putih has the potential to act as a supply chain coordinator through production aggregation, logistics management, and information management. Information technology support, government policies, and logistics infrastructure strengthen the cooperative's ability to improve FSCM performance. Conclusion. Optimal FSCM performance subsequently contributes to increased food security and the sustainability of the food system. Implementation. The developed conceptual model is expected to serve as a basis for further empirical research and a reference for formulating cooperative-based food policies.
Designing Ergonomic Work Aids to Improve Worker Productivity in Spring Mattress Manufacturing at PT Rentang Buana Niagamakmur Lias, Steven; Kurniawan, Daniel; Lihan, David; Gunawan, Andrean; Yogasara, Thedy; Susanto, Sani
Jurnal Improsci Vol 3 No 4 (2026): Vol 3 No 4 February 2026
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i4.1085

Abstract

Background. PT Rentang Buana Niagamakmur is a spring mattress manufacturing company that faces a decrease in productivity due to worker discomfort and ergonomically suboptimal working postures Purpose. This study aims to identify the causes of workers' physical discomfort in the production process and design work aids that can improve comfort and productivity. Method. The research process began with data collection through observation and interviews to understand the activities of workers at the production station. The Nordic Body Map (NBM) was employed to identify workers’ musculoskeletal complaints, while Rapid Entire Body Assessment (REBA) was applied to evaluate ergonomic risk levels. Results. Based on the results of the analysis, the design of work aids was carried out using an ergonomic approach that suits the needs of workers at fabric measurement and foam cutting stations. Evaluation of the effectiveness of the aids was carried out by comparing REBA scores before and after the use of the aids. Conclusion. The results showed that the main physical complaints of workers were identified in the right wrist, waist, and calf. The design of work aids at the fabric measuring station lowered the REBA score from 11 to 3 (low risk), while the aids at the foam cutting station reduced the score from 7 to 3 (low risk). Implementation. The proposed work aids were shown to significantly reduce physical discomfort and improve productivity at both workstations.

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