Abstract:Cut and fill calculation is an essential stage in open-pit mining activities to determine the volume of soil or rock that must be excavated (cut) and deposited (fill) based on elevation changes between the actual topographic…
phic conditions and the planned mine design. This study aims to analyze the results of cut and fill volume calculations using GEOVIA Surpac software in a coal pit area. The data used include topographic maps obtained from RTK (Real Time Kinematic) surveys. The calculation results show a total cut volume of 805.42 MT and a fill volume of 2.09 MT, with a net volume of 803.33 MT, using a rock density of 1. The use of Surpac has proven effective and accurate in calculating material volumes and supporting the optimization of mine design.
Abstract:This study aims to analyze the evaluation of public policy and environmental disaster mitigation predictions regarding the cancellation of the strategic glass industry development in Rempang Island. The study employed a…
qualitative approach with a case study design and data collection through systematic literature review. Data analysis was conducted using the interactive model of Miles, Huberman & Saldana (2014). The results show that the Rempang Eco City National Strategic Project (NSP) failed comprehensively due to a procedurally flawed and non-participatory formulation process. Economic valuation research by Trend Asia et al. (2025) found that the average household income of Rempang residents reached IDR 32.77 million per household per month, far exceeding the government’s claim of IDR 3 million, while potential environmental losses reached IDR 109 million per household per month. Based on Dunn’s (2003) six policy evaluation criteria, this policy proved to be ineffective, inefficient, inadequate, inequitable, unresponsive, and inappropriate. President Prabowo Subianto’s decision to exclude Rempang Eco City from the NSP list through Presidential Regulation No. 12 of 2025 was the right step, yet still requires more decisive regulation to provide legal certainty for affected communities.
Abstract:This research comprehensively analyzes the glass industry development policy on Rempang Island, Batam City, Riau Islands Province, using an environmental risk mitigation approach. Employing a descriptive qualitative method…
od with a case study design and library research, this study examines five main dimensions: the chronology of the Rempang Island case, policy conflicts and controversies, the government regulatory framework, disaster risk analysis from nine environmental perspectives, and overall policy evaluation. The findings reveal that the Rempang Eco City project, designated as a National Strategic Project (PSN) through Permenko for Economic Affairs Number 7 of 2023, triggered prolonged agrarian conflict due to the absence of meaningful participation from indigenous Malay communities who have inhabited 16 ancient villages on the island since 1834. The project implementation was marked by forced evictions, repeated acts of violence, and non-transparent environmental impact assessment (AMDAL) processes. Disaster risk analysis from nine environmental perspectives covering air quality, water quality, coastal and marine ecosystems, sand mining and geological degradation, biodiversity, community health, social-cultural impacts, climate change vulnerability, and environmental governance consistently produces high-risk assessments, affirming that Rempang Island as a small island ecosystem lacks adequate carrying capacity for large-scale glass industrial development without permanent and irreversible ecological damage. Although Presidential Regulation Number 12 of 2025 de facto removed Rempang Eco City from the list of 77 National Strategic Projects under President Prabowo Subianto’s administration, the absence of an explicit revocation of Permenko Number 7 of 2023 creates ongoing legal ambiguity for affected communities. This research concludes that Indonesia urgently requires fundamental reform in its investment-based development policy paradigm, encompassing strengthened indigenous community participation mechanisms, elevation of AMDAL as a non-circumventable legal requirement prior to investment designation, and application of the ecological precautionary principle in small island development.
Abstract:The development of a glass manufacturing plant within the Rempang Eco City project on Rempang Island, Riau Islands Province, represents the Indonesian government's strategy to promote investment and accelerate economic growth…
rowth through the National Strategic Project (PSN) framework. Despite its potential to increase investment, create employment opportunities, and strengthen industrial competitiveness, the project has generated social conflict and environmental concerns. This study aims to analyze the policy rationale underlying the Rempang–Galang glass factory development, examine its implications for social and environmental justice, and evaluate the policy using William N. Dunn’s policy evaluation model. This research employs a qualitative case study approach. Data were collected through a systematic literature review of policy documents, reports from government institutions and civil society organizations, and relevant academic publications. The data were analyzed using content analysis based on the theoretical frameworks of social justice, environmental justice, and public policy evaluation. The findings reveal that the Rempang–Galang development policy is primarily driven by economic growth and investment-oriented objectives. Its implementation has led to an unequal distribution of development benefits and burdens, reflected in the risks of community relocation, loss of living space, pressure on coastal ecosystems, and the emergence of agrarian conflicts. Evaluation based on Dunn’s criteria indicates persistent challenges related to equity, responsiveness, adequacy, and appropriateness. The study concludes that a more participatory, equitable, and sustainable development approach is required through stronger protection of local community rights, inclusive environmental governance, and a fairer distribution of development benefits.
Abstract:This study aims to analyze the relationship and influence of coal quality parameters which include Total Moisture (TM), Ash Content (ASH), and Total Sulfur (TS) on Gross Calorific Value (GCV). The data used in this study…
is data from laboratory tests on 23 samples of Run Of Mine (ROM) coal at seam 16 at PT Unggul Nusantara, North Barito Regency, Central Kalimantan. Data analysis was performed statistically using the help of SPSS software through Pearson correlation test and multiple linear regression analysis. The results of the correlation test showed that simultaneously, the TM, ASH, and TS parameters had a very strong relationship with the GCV value with a correlation coefficient (R) of 0.893 and contributed an influence of 76.5%. Partially, Ash Content (ASH) had a very strong negative relationship (r = -0.881) and had a significant effect on calorie values (p = 0.000). Each 1% increase in ash content would decrease the GCV value by 68.249 Kcal/Kg. Meanwhile, Total Moisture had a significant positive relationship by simple correlation (r = 0.506, p = 0.014), but showed no partial significant effect in multiple regression models (p = 0.364). Total Sulfur was found to have a very weak negative relationship (r = -0.182) and had no significant effect on GCV values (p = 0.406). This study concludes that Ash Content is the most dominant parameter that affects the reduction of the caloric value of coal seam 16 at PT Unggul Nusantara.
Abstract:This study aims to determine the influence of internal control and the village financial system on the managerial performance of village apparatus in the villages of West Limboto District. This research employed a quantitative…
tative method. The data used in this study were primary data collected through questionnaires distributed to village apparatus in West Limboto District, resulting in a sample of 118 respondents. The sampling technique used was purposive sampling. The analytical tool employed was multiple linear regression analysis. The results indicate that the Village Financial System has a positive effect on the Managerial Performance of Village Apparatus, whereas Internal Control does not have a positive effect on the Managerial Performance of Village Apparatus.
Abstract:Direct incentive programs from a brand manufacturer to a distributor's sales force are uncommon in the Indonesian B2B lighting sector, and their consequences for portfolio composition and distributor profitability have not…
ot been empirically tested. This study examines whether a flat 3 percent quarterly bonus, applied uniformly across a portfolio of more than three hundred products spanning a 600-fold price range, produces unintended consequences beyond its stated goal of volume growth. A sequential explanatory mixed-methods design is used. The quantitative phase analyses 781 product-quarter observations covering 326 products over eleven quarters from mid-2023 through end-2025. The qualitative phase uses confirmatory interviews with seventeen informants from distributor management and sales teams. The incentive program successfully drives all four sales performance dimensions measured in the study, covering volume growth, revenue share, transaction frequency, and a cumulative growth index, all of which are statistically significant. However, higher-priced products attract significantly fewer transactions per quarter and grow more slowly over time. Seven of eight hypotheses are supported. Qualitative findings confirm that the incentive effect adds to total selling activity rather than redirecting it, but transaction attention consistently concentrates on lower-priced products across the eleven-quarter period. The study extends agency theory to a three-party setting and provides the first panel-level evidence of composition effects from a uniform sales incentive in Indonesian B2B distribution.
Abstract:Islamic economics operates as a normative framework prioritizing social justice, equitable wealth redistribution, and collective wellbeing. Despite its robust philosophical foundations, empirical consensus regarding how…
these tenets translate into measurable welfare outcomes across heterogeneous developing nations remains highly fragmented. This study addresses this critical gap by executing a systematic literature review guided by the PRISMA 2020 statement to synthesize empirical evidence on the operationalization of Zakat, Waqf, and Islamic Social Finance (ISF) as structural instruments for poverty reduction. Departing from traditional descriptive reviews, this paper introduces an original analytical taxonomy that maps the operational mechanics of ISF against micro-level and macro-level development outcomes. Based on a rigorous multi-stage screening of peer-reviewed empirical studies published between 2020 and 2025 across emerging economies, a final synthesized sample of $n = 10$ high-quality primary articles was evaluated. The qualitative narrative synthesis reveals that integrated ISF instruments exert a structurally positive impact on poverty alleviation, income optimization, and socio-economic empowerment, particularly when embedded within digital financial ecosystems and formal financial inclusion frameworks. However, the analysis uncovers substantial outcome heterogeneity, demonstrating that welfare efficacy is highly conditional upon institutional governance quality, targeting accuracy, and localized implementation designs. The structural novelty of this research lies in its empirical crystallization of the explicit boundary conditions under which normative faith-based capital successfully disrupts poverty traps, offering an evidence-based operational blueprint for policymakers and Sharia social institutions in the Global South.
Abstract:This study aims to analyze the concept and application of hospital criminal liability in cases of medical malpractice in the Indonesian criminal law system, as well as examine the relationship between the individual responsibility…
onsibility of medical personnel and the responsibility of hospital institutions. This study uses a qualitative approach with case study methods and a juridical-normative approach enriched with empirical data. Data was collected through in-depth interviews with legal practitioners, medical personnel, and hospital managers, accompanied by a documentary study of laws and regulations, court rulings, and related literature. The results of the study show that criminal liability in cases of medical malpractice is generally still focused on individual medical personnel as direct perpetrators, while the accountability of hospital institutions has not been optimally applied in criminal law enforcement practices. In addition, it was found that there is a complex relationship between the professional responsibilities of medical personnel and the institutional obligations of hospitals in ensuring health service standards, including aspects of supervision, risk management, and medical service systems. This study concludes that it is necessary to strengthen the concept of corporate criminal liability for hospitals in cases of medical malpractice in order to create legal certainty and more balanced protection for patients, medical personnel, and health service institutions. The findings of this study contribute to the development of health law studies and become a basis for consideration for policymakers in formulating more effective regulations and law enforcement mechanisms.
Abstract:This study aims to reveal the relationship between the values contained in the Qur'an and the traditional practice of dowry (mahr) giving, viewed from both religious and cultural perspectives. Using a qualitative approach…
h based on the textual analysis of Qur'anic verses and in-depth interviews with experts in religious studies and cultural anthropology, this research integrates the frameworks of maqasid al-sharia and cultural anthropology theory to analyze the historical and contemporary transformation of dowry practices. The study also explores the symbolic meaning of dowry, not merely as an obligation but as a form of recognition of women's dignity and rights within the family. Furthermore, it examines the socio-economic factors influencing the amount of dowry and how these factors affect social structures and gender relations within society. In addition, comparisons are made with dowry practices in various other cultures and religions, enabling a deeper understanding of both the unique and shared aspects of universal human values. This comprehensive analysis seeks to provide new insights and a concrete contribution to contemporary discussions on the role of religion in social and cultural life, as well as the challenges of integrating tradition with the needs of modern society. The findings indicate that the practice of dowry giving, as prescribed in the Qur'anic verses, possesses profound normative and strategic values in ensuring justice and social balance within the family structure. Every element of the dowry is not merely symbolic but also embodies meanings that reflect responsibility, respect, and commitment in married life. Over time, the understanding and implementation of this tradition have undergone significant changes, influenced by evolving social, economic, and cultural conditions. This highlights the importance of not only preserving the tradition but also adapting it to meet the demands of contemporary society.