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All Journal TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES (TIRES)
Laksono Djoko Nugroho
Civil Engineering Study Program, Faculty of Engineering, Universitas 17 Agustus 1945 Surabaya, Indonesia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Mathematics Physics

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Analysis of Work Network and Critical Trajectory on Penganten - Ngampal Road Reconstruction Project Using Critical Path Method (CPM) Akmal Puguh Al-Putro; Laksono Djoko Nugroho; Haris Muhammadun
TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES Vol. 4 No. 1 (2025): JANUARY
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/tires.v4i1.1599

Abstract

The Reconstruction Project of Penganten-Ngampal Road in Bojonegoro Regency faces challenges in time and resource management, leading to project delays. These delays affect time and cost efficiency, which are key issues in achieving the project's objectives. To address this problem, this study aims to analyze the project’s work schedule and critical path using the Critical Path Method (CPM). The research employs a quantitative method, with data collected through primary and secondary data sources. Primary data was obtained through field observations and questionnaires, while secondary data was gathered from project documents and relevant literature. Using CPM, the first step was to construct the project’s work schedule based on the work breakdown structure (WBS) and the relationships between activities. An analysis was then performed utilizing forward pass and backward pass methods to identify the critical path. This path comprises tasks that require timely completion to avoid causing additional project delays. The results show that the critical path for the Penganten-Ngampal Road Reconstruction Project is identified in activities with codes A, C, D, E, and F. The total project completion duration based on the analysis is 47 days. Activities on this critical path must be completed on time, as delays in any of these activities will affect the overall completion of the project. Therefore, better time management and proper resource allocation for critical activities are essential to complete the project according to the planned timeline.
Analysis of Factors Affecting Clean Water Service in Dili City Orlando Gomes; Esti Wulandari; Laksono Djoko Nugroho
TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES Vol. 4 No. 2 (2025): APRIL
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/tires.v4i2.1603

Abstract

Availability of clean water is a basic need in Dili City, Timor Leste, but uneven distribution, inadequate infrastructure, and limited resources are the main challenges. This study aims to analyze the factors that influence clean water services. The research method included multiple linear regression analysis to identify influential factors. Data was obtained through surveys, interviews, official reports and literature review. The results showed that piping distance and number of family members positively influenced water quality and quantity, while household income tended to decrease water quality and quantity. Expenditure on clean water improves water quality and quantity. For water continuity, the number of people in the family had a strong positive effect, while other factors had a negative effect. The coefficient of determination for water quality is 5.3%, water quantity 20.9%, and water continuity 5.9%, indicating that many other factors influence water services in Dili City.
Co-Authors Akmal Puguh Al-Putro Esti Wulandari Haris Muhammadun Orlando Gomes