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Zidnal Falah
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INDONESIA
Indonesian Journal of Multidisciplinary Science
Published by CV. International Journal Labs
ISSN : 28085957     EISSN : 28086724     DOI : 10.55324
Core Subject : Economy, Humanities, Health, Science, Education, Social, Engineering,
Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Public Health Social Sciences
Indonesian Journal of Multidisciplinary Science (IJOMS) is a scientific journal in the form of research and can be accessed openly. This journal has e-ISSN 2808-6724 and p-ISSN 2808-5957. This journal is published monthly by International Journal Labs. The development of the company made the management of this Journal transferred to International Journal Labs which is part of Syntax Corporation Indonesia. Indonesian Journal of Multidisciplinary Science (IJOMS) provides a means for ongoing discussion of relevant issues that fall within the focus and scope of the journal that can be examined empirically. This journal publishes research articles covering multidisciplinary sciences, including: Humanities and social sciences, contemporary political science, Educational sciences, religious sciences and philosophy, economics, Engineering sciences, Health sciences, medical sciences, design arts and media sciences.
Arjuna Subject : Umum - Umum
Articles 692 Documents
 66   67   68   69   70 
Development of Numerical Models for 1D and 2D Pollutant Transport Problems Using the Leapfrog Method with Additional Numerical Filters Hafiyyan, Qalbi; Nirmala, Azwa; Murad, Murad; Bachtiar, Vivi; Sumiyattinah, Sumiyattinah
Indonesian Journal of Multidisciplinary Science Vol. 5 No. 7 (2026): Indonesian Journal of Multidisciplinary Science
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/ijoms.v5i7.1277

Abstract

Pollutant transport in aquatic environments has become a critical environmental issue due to increasing contamination from industrial, domestic, and agricultural activities, which threaten ecosystems and human health. Understanding pollutant behavior through numerical modeling is essential for effective monitoring and mitigation strategies. This study aims to develop and evaluate a numerical model for simulating one- and two-dimensional pollutant transport using the advection–diffusion equation as the governing framework. The method employed is a finite difference approach based on the Leapfrog scheme combined with the Hansen numerical filter to improve model stability and simplicity. The model is tested through several benchmark cases, including pure advection, advection–diffusion, and Gaussian pulse scenarios in both one- and two-dimensional domains, with results compared to analytical solutions. The findings indicate that the proposed Leapfrog–Hansen model demonstrates good agreement with analytical solutions and achieves relatively small error values, particularly in one-dimensional cases. The results also show that spatial and temporal discretization significantly influence model stability and accuracy, where smaller step sizes generally improve performance but may reduce accuracy due to excessive filtering. In conclusion, the Leapfrog–Hansen model provides a simple yet effective alternative for pollutant transport simulation, especially for one-dimensional problems, with potential applications in environmental analysis and decision-making
Legal Certainty for the Fena Customary Law Community Following the Establishment of South Buru Regency (A Study of Buru Regency and South Buru Regency) Mangemba, Toufik; Salmon, Hendrik; Bakarbessy , A.D.
Indonesian Journal of Multidisciplinary Science Vol. 5 No. 7 (2026): Indonesian Journal of Multidisciplinary Science
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/ijoms.v5i7.1279

Abstract

This study examines the issue of legal certainty for the Fena customary law community following the establishment of South Buru Regency in Indonesia. The background of this research is rooted in the mismatch between historically formed customary territories, particularly Regenschaap and Fena, and newly defined administrative boundaries resulting from regional expansion policies. This discrepancy has created legal ambiguity regarding the recognition, authority, and governance of customary institutions. The objective of this research is to analyze the extent to which legal certainty is affected and to propose solutions for harmonizing customary and administrative systems. The study employs a normative legal research method, utilizing primary legal materials such as the 1945 Constitution and statutory regulations, as well as secondary sources including legal literature and scholarly works. Data are collected through document analysis and interpreted using qualitative normative approaches. The results reveal that inconsistencies between customary structures and administrative jurisdictions lead to overlapping authority, unclear leadership legitimacy, and potential conflicts in governance. The discussion highlights the need for formal recognition of Regenschaap, clear mapping of customary territories, and inter-regional coordination mechanisms. In conclusion, strengthening legal certainty requires integrating customary law systems into formal legal frameworks while preserving their sociocultural legitimacy.

Page 70 of 70 | Total Record : 692

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