Bridging Internal Constraints and Performance: A SEM-PLS Analysis of Public Infrastructure Projects in the Buton Islands

Bridging Internal Constraints and Performance: A SEM-PLS Analysis of Public Infrastructure Projects in the Buton Islands

Authors

  • Syamsul Bahri Bahar Universitas Muhammadiyah Buton
  • Ahmad Efendi Universitas Muhammadiyah Buton
  • Agusman Universitas Muhammadiyah Buton
  • Idwan Universitas Muhammadiyah Buton
  • Muammar Makmur Universitas Halu Oleo
  • Sunik Universitas Katolik Widya Karya Malang

DOI:

https://doi.org/10.56741/jnest.v4i03.1263

Keywords:

Construction Management, Project Performance, Infrastructure Delivery, Developing Regions, Site Supervision, Planning Systems

Abstract

Public infrastructure projects in developing regions often face performance issues due to internal capacity gaps and weak management systems. This study emphasizes both the direct and mediating effects of internal factors on project outcomes, with stronger justification for using SEM-PLS and additional comparative methods. Regression-based robustness checks and PLSpredict cross-validation are incorporated to validate the results. The research investigates the mediating role of construction management in linking internal organizational factors to project performance in the Buton Islands, Southeast Sulawesi. Key elements examined include planning quality, supervisory practices, communication effectiveness, and equipment readiness, measured against cost, time, and quality outcomes. A quantitative design using Structural Equation Modeling with Partial Least Squares (SEM-PLS) was applied to data from 54 construction professionals in government and private sectors. To address statistical concerns with the small sample size and many indicators, redundant items were eliminated (loading < 0.70), and discriminant validity was tested using HTMT ratios. Findings indicate that internal organizational conditions have a moderate but significant direct effect on project performance, while this influence is substantially strengthened when mediated by effective construction management. Novelty is underscored by situating the analysis in the Buton Islands, a geographically isolated and resource-constrained region rarely studied in international literature, extending systems theory and the Iron Triangle to new environments. The strongest predictive paths involve budgeting systems, scheduling mechanisms, and quality assurance frameworks. Beyond technical dimensions, managerial practices also foster institutional trust and resilience, offering practical guidance for policymakers and practitioners.

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Author Biographies

Syamsul Bahri Bahar, Universitas Muhammadiyah Buton

Syamsul Bahri Bahar is an academic and researcher at Universitas Muhammadiyah Buton, Indonesia, where he serves as a lecturer and contributes to the development of civil engineering education. In addition to his teaching role, he holds an administrative leadership position as Wakil Rektor Bidang Kemahasiswaan at the university, reflecting his engagement in both academic and student affairs. His research interests are centered on civil infrastructure and engineering optimization, with his recent publications addressing topics such as parking area characteristics in university campuses and construction project analysis. Bahar’s work has been indexed in the Indonesian Science and Technology Index (SINTA), showing active participation in scientific discourse within Indonesia.

Ahmad Efendi, Universitas Muhammadiyah Buton

Ahmad Efendi is a lecturer in the Civil Engineering Department at Universitas Muhammadiyah Buton, Indonesia, where he contributes to teaching and research in infrastructure and community development. Efendi’s scholarly activities are documented in national academic databases such as SINTA, where he is credited with publications examining the design and social impact of civil works projects, including studies on infrastructure in coastal regions and community facility planning. His research reflects a commitment to applying engineering principles to real-world challenges in regional development and sustainable community planning.

Agusman, Universitas Muhammadiyah Buton

Agusman is a faculty member in the Civil Engineering program at Universitas Muhammadiyah Buton, Indonesia. His research contributions include collaborative studies on local infrastructure and environmental engineering topics, as seen in works co-authored with colleagues at the university. Through his academic work, Agusman engages with field surveys and applied analysis to better understand the performance and utilization of civil infrastructure in community settings. His contributions support the institution’s mission to strengthen engineering education and address regional development needs.

Idwan, Universitas Muhammadiyah Buton

Idwan serves as a lecturer in the Civil Engineering Department at Universitas Muhammadiyah Buton, Indonesia, where he is involved in both instruction and research initiatives. His scholarly contributions include joint publications on infrastructure design and community-oriented engineering projects. Idwan’s work complements the department’s efforts to advance applied civil engineering knowledge, particularly in the context of Indonesian regional settings and technical problem-solving.

Muammar Makmur, Universitas Halu Oleo

Muammar Makmur is a lecturer at Universitas Halu Oleo, Indonesia, where he specializes in civil and maritime engineering disciplines. His academic profile highlights expertise in construction management, engineering materials, and the broader aspects of structural and project engineering. Makmur has contributed to research in material technology and construction system analysis, with his works appearing in academic citation sources such as Google Scholar. His role at Universitas Halu Oleo reflects active engagement in both teaching and advancing engineering research within the Indonesian higher-education landscape.

Sunik, Universitas Katolik Widya Karya Malang

Sunik is a senior lecturer in the Department of Civil Engineering at Universitas Katolik Widya Karya Malang, Indonesia, where he focuses on hydraulics and water resources engineering. His academic work spans experimental and applied research, including studies on flow dynamics under hydraulic structures and environmental impact assessments related to water systems. Sunik’s research profile, documented on platforms such as ResearchGate and indexed in SINTA, demonstrates his contribution to the civil engineering body of knowledge, particularly in hydraulic modeling, water quality analysis, and sustainable engineering practices.

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Published

2025-12-27

How to Cite

Bahar, S. B., Efendi, A., Agusman, Idwan, Makmur, M., & Sunik. (2025). Bridging Internal Constraints and Performance: A SEM-PLS Analysis of Public Infrastructure Projects in the Buton Islands. Journal of Novel Engineering Science and Technology, 4(03), 147–154. https://doi.org/10.56741/jnest.v4i03.1263

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