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All Journal JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Jambura Geoscience Review JISIP: Jurnal Ilmu Sosial dan Pendidikan Akuntoteknologi : Jurnal Ilmiah Akuntansi dan Teknologi Ilomata International Journal of Tax and Accounting Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Digital Transformation Technology (Digitech) Jurnal Ekonomi Bisnis, Manajemen dan Akuntansi (JEBMAK) International Journal of Science and Environment SCIENTIA JOURNAL : Jurnal Ilmiah Mahasiswa
Anton Wijaya
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Physics Social Sciences Other

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Stratigraphic Synthesis of the Danau Rayo Geosite: Possible Impact Fragmentation Wijaya, Anton; Setiawan, Budhi; Rochmana, Yogie Zulkurnia
Jambura Geoscience Review Vol 8, No 1 (2026): Jambura Geoscience Review (JGEOSREV)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jgeosrev.v8i1.35667

Abstract

Lake Rayo in West Sulawesi, Indonesia, has been proposed as a potential meteorite impact structure, yet direct evidence supporting this origin remains limited. This study aims to provide a preliminary stratigraphic and granulometric characterization of Lake Rayo’s basin fill to clarify its genesis and support its geoheritage significance. Core sediment samples were collected from the basin floor and analyzed for grain size distribution, color (Munsell system), texture, and crack morphology using standard laboratory techniques. Seven stratigraphic intervals (BR1–BR7) were identified, showing clear vertical variations in granulometric parameters, sorting, and sediment color. Distinct fragmentation horizons, changes in color, and the occurrence of bedding cracks were interpreted as possible signatures of high-energy events, potentially associated with a meteorite impact. Comparative analysis with established impact structures, such as Lonar and Ries, revealed similar sedimentological features, supporting the impact hypothesis. These findings provide initial scientific evidence for the classification of Lake Rayo as an impact-related geoheritage site in Indonesia. The study also highlights the importance of integrating sedimentological data with future multidisciplinary research—such as geochemical and mineralogical shock analysis—to substantiate the impact origin more robustly. Overall, the results contribute valuable insights for geoheritage conservation, geoeducation, and the broader understanding of rare impact structures in Southeast Asia.
Systematic Review of 5D BIM Implementation in Construction Projects Widiasanti, Irika; Fikri, Yusron; Wibisono, Moh Akbar; Wijaya, Anton; Hasanah, Nadilla Hikmatul
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.371

Abstract

integration between scheduling (4D) and cost estimation (5D). The literature search focused on peer-reviewed articles and supporting academic sources published between 2019 and 2025, yielding a set of relevant studies. The analyzed data include project types, software used (Revit, Navisworks/Synchro, CostX), data exchange formats (IFC/CSV), and the relationship among the Work Breakdown Structure (WBS), Quantity Take-Off (QTO), and cost account code (COA). The synthesis shows that 5D BIM improves cost accuracy through model-linked QTO, accelerates estimation workflows, and shortens the time required to identify the impacts of design changes on both cost and schedule. The main obstacles to 5D BIM adoption include the loss of information attributes during cross-software data exchanges, inconsistencies in WBS/COA standards across project stakeholders, and limitations in user competency. Supporting factors for effective implementation include an open BIM approach, a Common Data Environment (CDE), standardized cost libraries, and structured training governance. The study also highlights replicable practices such as early WBS alignment for 4D–5D synchronization, rule-based QTO validation, and linking work progress to payment mechanisms. These findings are expected to contribute to the development of 5D BIM guidelines and educational curricula, particularly for small- to medium-scale contractors.
Co-Authors Abdullah, Arken Ardiansah, Rian Budhi Setiawan Budiman Arpan Choiriyah Endang Mulyani Fikri, Yusron Hasanah, Nadilla Hikmatul Irene Svinarky Irika Widiasanti Lyonita, Vera Moh. Faizal Romdhan, Mohammad Yusri Samaeni, Fera Citra Samara, Aldi Suhendri Suhendri Susanti, Metta Thoyyibah Wi, Peng Wibisono, Moh Akbar Windriyani, Eka Yogie Zulkurnia Rochmana