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Showing 331 articles found for "Mining"

Design Of A Decision Support System For Prioritizing Village Infrastructure Development Using The SAW Method

Daud Brilian Simanjuntak, Edward Rajagukuguk, Surianto Sitepu
Abstract: Village infrastructure development planning often faces challenges in determining priorities due to limited budget allocations and assessment mechanisms that still tend to be subjective. This study aims to build an objective,… tive, transparent, and measurable Decision Support System (DSS) to determine the priority order of infrastructure development proposals in Asam Jawa Village, Torgamba District. The applied solution integrates the Rank Order Centroid (ROC) method to calculate criteria weighting based on relative importance, and the Simple Additive Weighting (SAW) method to process the alternative ranking calculation. The evaluation was conducted on 23 physical infrastructure proposals using four main criteria: urgency level (C1), physical condition (C2), benefits (C3), and population size (C4). The results indicate that alternative A4 (Construction of Borehole Well and Public Toilet at Field) and alternative A18 (Sejahtera Street Concrete Cast) achieved the highest preference score of 1.000000, followed by other infrastructure proposals in a structured manner. The combined use of ROC and SAW methods is proven to be effective and consistent in generating accurate rural development priority rankings. The integration of these two methods facilitates village government officials in making accountable decisions while minimizing cognitive bias risks in optimizing development budget allocation.

Procedural Level Generation For 2D Platformer Games Based On Graph And Chunk

Akmal Zidan Fahreza, Chrystia Aji Putra, Yisti Vita Via
Abstract: Level design is one of the key components in determining the gameplay experience in 2D platformer games. However, manual level design is time-consuming and difficult to scale. Graph theory can be used to represent the abstract… stract structure of a level, with nodes as spatial units and edges as paths connecting those spaces. The problem is that this graph structure cannot always be directly translated into a valid and playable physical layout due to platformer constraints, such as jump height, safe distance, and gravity. This research proposes a chunk-based transformation approach, in which each graph node is represented as a fixed-size level chunk containing a platform layout, obstacles, and entry and exit points. The transformation of the graph into a physical level is carried out through the selection, arrangement, and alignment of chunks based on the graph’s topology. This study aims to design a framework for transforming an abstract graph G=(V,E) into a chunk-based 2D platformer level layout. The method used is qualitative-descriptive, involving the formulation of a graph model, rules for mapping and arranging chunks, and playability criteria. The results of the study reveal three main stages: mapping vertices to corresponding chunks, arranging chunks according to the graph’s structure, and validating reachability using an automatic path-finding agent.

Application Of Mamdani's Fuzzy Logic In Modeling The Prediction Of Drug Abuse Levels In Padang City

Cindy Yunaldi, Yusli Yenni
Abstract: Drug abuse is a problem that can be influenced by various interrelated factors. This study aims to apply Mamdani Fuzzy logic in predicting the level of drug abuse in Padang City based on several factors obtained from documentation… umentation and interviews. The input variables used consist of the Age of the Perpetrator, Environment, Socializing, Gender, and Family, while the output variable is the Level of Drug Abuse with Low and High categories. The research stages include data collection, determining variables and fuzzy sets, fuzzification, forming if-then rules, inference using the minimum operator, composition using the maximum operator, and defuzzification using the centroid method. A total of 64 fuzzy rules are used to connect the combination of input variables with the output. Testing is done through manual calculations and implementation using MATLAB. The test results show that the output categories from manual calculations and MATLAB are the same in three test data, namely High, High, and Low. These results indicate that the Mamdani Fuzzy method can be used in modeling the level of drug abuse based on the variables used.

Interest Rates and Financial Performance Effects on IDX30 Mining Stock Prices With Inflation As a Moderating Variable: Evidence From 2021–2024

Hudzaifa, Sarah Ardian, Syah, Silvana
Abstract: This study was motivated by fluctuations in the stock prices of mining sector companies listed in the IDX30 index during 2021–2024, Indonesia’s mineral downstreaming policy, and inconsistencies in previous research findings.… indings. This study aimed to analyze the effects of interest rates and financial performance, as measured by the debt-to-equity ratio (DER) and earnings per share (EPS), on the stock prices of IDX30 mining companies and to examine the moderating role of inflation. The population comprised all mining sector companies listed in the IDX30 index during the year 2021–2024, while the sample was selected using purposive sampling. This study employed a quantitative explanatory approach and panel data regression with Moderated Regression Analysis. The results showed that interest rates had a negative and significant effect on stock prices, whereas EPS had a positive and significant effect. DER did not significantly affect stock prices. Furthermore, inflation did not moderate the effects of interest rates, DER, or EPS on stock prices. These findings imply that mining companies should maintain sustainable profitability and consider interest rate dynamics in financial decision-making. Investors should also consider macroeconomic conditions and company fundamentals when formulating investment strategies.

EXAMINING THE DRIVERS OF E-LOYALTY: THE INTERPLAY OF DISCOUNT FRAMING, BRAND REPUTATION, AND DIGITAL SATISFACTION IN FOOD DELIVERY APPLICATIONS

Sari, Niken Permata, Artha, Bhenu, Julyen, Ade Maryam
Abstract: This study aims to examine the influence of discount framing, brand reputation, e-satisfaction, and e-loyalty on the use of online food delivery applications. The study employs a quantitative approach using survey methods… s and hypothesis testing with SEM-AMOS version 23. The population of this study consists of users of online food delivery applications across Indonesia, with the unit of analysis being individuals. Data for this study were obtained from 135 respondents who filled out an online questionnaire based on a purposive sampling method. The results of the study indicate that discount framing has a positive effect on brand reputation and e-satisfaction. Brand reputation positively affects e-satisfaction. E-satisfaction positively impacts e-loyalty. This indicates that the higher the discount framing, the better the brand reputation and e-satisfaction for ordering food. Furthermore, the better the brand reputation, the higher the e-satisfaction, and the higher the e-satisfaction, the better the e-loyalty in ordering food through online food delivery applications. The implications of these results for application owners are to understand the influence of discount framing, brand reputation, e-satisfaction, and e-loyalty, so they can formulate strategies and policies related to these factors. Meanwhile, the implication for application users is that they can use applications that offer discount framing that suits their needs.

RESEARCH PARADIGMS AND METHODS

Maritasari, Donna Boedi, Sulastri, Dina Fitri, Septiani, Jumiarti, Anggara, Arya
Abstract: Research paradigms and research methods are two fundamental components that determine the quality, consistency, and credibility of scientific research. However, there are still misunderstandings regarding the relationship… p between research paradigms and research methods, particularly in determining the approach that best suits the research objectives. This study aims to analyze the concept of research paradigms and their relationship to the selection of research methods. The study employs a qualitative approach using library research through the analysis of various relevant scientific sources, including books, journal articles, and conference proceedings. Data were analyzed using content analysis to identify and synthesize various concepts related to research paradigms and methods. The results indicate that research paradigms—such as positivism, post-positivism, interpretivism, constructivism, pragmatism, and the critical paradigm—possess distinct characteristics that influence the selection of research methods. Furthermore, the pragmatist paradigm serves as the dominant foundation for the use of mixed methods. This study makes a theoretical contribution by clarifying the relationship between research paradigms and research methods and serves as a practical reference for researchers in determining the appropriate research approach.

FACTOR OF SAFETY AND PROBABILITY OF FAILURE ASSESSMENT OF ROCK SLOPES IN ARTISANAL KAOLIN MINE USING LIMIT EQUILIBRIUM METHOD AND MONTE CARLO SIMULATION

Rianse, Mohammad Suriyaidulman
Abstract: This study aims to evaluate the stability of three rock slopes in an artisanal kaolin mine in Semin, Gunungkidul, Yogyakarta, Indonesia, using deterministic and probabilistic approaches, and to identify the geotechnical… parameters most influencing slope stability. The evaluation is conducted in compliance with Indonesian Mining Regulation (Kepmen ESDM No. 1827 K/30/MEM/2018) to provide quantitative geotechnical evidence for a mine that has been operated without prior formal geotechnical assessment. Field data were collected using the scanline method to characterize rock mass discontinuities. Laboratory tests comprising direct shear and physical properties tests were conducted to determine cohesion (c), friction angle (ϕ), and unit weight (γ) for each slope. Seismic coefficient (ks = 0,0913) was incorporated as a dynamic loading parameter. Slope stability was analyzed using the General Limit Equilibrium (GLE) method to obtain the deterministic Factor of Safety (FoS). Monte Carlo simulation (N = 10.000 iterations) was applied to determine the Probability of Failure (PoF), coefficient of variation of FoS (CoV), and reliability index (β). Sensitivity analysis was performed to quantify the contribution of each geotechnical parameter to FoS reduction. Results show that FoS values ranged from 2,019 (Slope III) to 10,55 (Slope II), all exceeding the regulatory minimum of 1,1. The PoF was 0,00% for all three slopes, well below the maximum allowable limit of 25%, with reliability indices ranging from 5,70 to 31,38. The CoV of FoS ranged from 3% to 9%, indicating low dispersion in stability outcomes despite parameter variability. Sensitivity analysis identified cohesion as the most dominant parameter in Slopes I and II, contributing 28% and 31% to FoS reduction respectively, while Slope III exhibited near-equal contributions from cohesion (20%) and friction angle (21%), reflecting its lower shear strength conditions. All three slopes satisfy the acceptance criteria of Kepmen ESDM No. 1827 K/30/MEM/2018 under current geotechnical and geometric conditions. The combined deterministic-probabilistic approach provides a more comprehensive slope safety assessment than deterministic analysis alone and is recommended for application in artisanal kaolin mining operations. Cohesion is identified as the critical parameter to be monitored and preserved to maintain slope stability.

SUSTAINABILITY COMMUNICATION STRATEGY IN @EOS_INDONESIA TIKTOK CONTENT IN BUILDING ELECTRIC VEHICLE EDUCATION

Rahayu, Dwi Ajeng Sri, Iman, Asrul Nur
Abstract: The increasing use of electric vehicles in Indonesia is a step in the framework of transforming the transportation system to be more environmentally friendly to achieve the Net Zero Emission target of 2060. However, the… increasing use of electric vehicles is not only due to technical and policy changes, but also communication efforts. This study attempts to analyze the sustainability communication strategy used by the TikTok account @eos_indonesia in providing education related to electric vehicles. This study uses a qualitative method with a content analysis approach, These methods consist of digital participatory observation and documentation, The data collection is an analysis of the TikTok account @eos_indonesia content data that will be taken with a time span of April 2025 - June 2026 according to the classification that has been made, the data collected includes: video content (visual, audio and narrative). and content analysis has stages, starting from determining the unit of information, data sampling, recoding or recoding data (coding), grouping based on certain categories until finally interpreting the meaning contained in the message content. The research results show that sustainability communication strategies are carried out through five approaches: providing environmental education, reducing the complexity of electric vehicle technology, storytelling based on user experience, digital visual persuasion, and combining economic and environmental benefits in every communication message. This study contributes to the field of digital communication and sustainability communication by demonstrating the potential effectiveness of social media as a public education platform towards green transportation transformation in Indonesia.

Penerapan Metode MOORA Pada Sistem Pendukung Keputusan Pemilihan Ketua Badan Eksekutif Mahasiswa

Lidya Rizki Ananda, Julianto Simatupang, Rio Bayu Sentosa, Nadia Astri Wulandari, Tika Christy
Abstract: Pemilihan Ketua Badan Eksekutif Mahasiswa (BEM) merupakan proses penting dalam menentukan mahasiswa yang memiliki kompetensi terbaik untuk memimpin organisasi kemahasiswaan. Namun, proses seleksi yang masih bergantung pada… da popularitas dan penilaian subjektif berpotensi menghasilkan keputusan yang kurang optimal. Penelitian ini bertujuan membangun Sistem Pendukung Keputusan (SPK) menggunakan metode Multi-Objective Optimization on the Basis of Ratio Analysis (MOORA) untuk membantu proses pemilihan Ketua BEM secara objektif. Data penelitian diperoleh melalui wawancara dengan pembina BEM untuk menentukan kriteria dan bobot penilaian. Lima kriteria yang digunakan meliputi kepemimpinan, kemampuan komunikasi, pengalaman organisasi, integritas, dan indeks prestasi kumulatif (IPK). Tahapan metode MOORA terdiri atas penyusunan matriks keputusan, normalisasi, perhitungan nilai optimasi, dan proses perangkingan. Hasil penelitian menunjukkan bahwa alternatif K1 memperoleh nilai optimasi tertinggi sebesar 0,473 sehingga direkomendasikan sebagai Ketua BEM terpilih. Penerapan metode MOORA mampu menghasilkan proses pengambilan keputusan yang lebih objektif, sistematis, transparan, dan akurat sehingga dapat dijadikan sebagai alat bantu dalam menentukan Ketua BEM berdasarkan kriteria yang telah ditetapkan. The selection of the Student Executive Board (BEM) President is an important process in determining the most qualified student to lead the student organization. However, conventional selection processes often rely on popularity and subjective judgments, which may lead to less optimal decisions. This study aims to develop a Decision Support System (DSS) using the Multi-Objective Optimization on the Basis of Ratio Analysis (MOORA) method to support a more objective selection process. Research data were collected through interviews with BEM advisors to determine the assessment criteria and their corresponding weights. Five criteria were used, namely leadership, communication skills, organizational experience, integrity, and grade point average (GPA). The MOORA method consists of decision matrix construction, normalization, optimization value calculation, and ranking. The results indicate that candidate K1 achieved the highest optimization value of 0.473 and was therefore recommended as the selected BEM President. The implementation of the MOORA method provides a more objective, systematic, transparent, and accurate decision-making process, making it an effective tool for supporting the selection of the most suitable BEM President based on predetermined criteria.

Analysis of The Marketing Mix Strategy : A Case Study of The Nur Azizah Songkok Recca Enterprise in Bone Regency

Rinaldy, Andi Adriyanto, Rahmatullah, Tuti Supatminingsih, Mustari, Muhammad Dinar
Abstract: Songkok Recca Nur Azizah is a business located in Bone Regency that produces traditional handcrafts in the form of traditional headgear characteristic of the Bugis tribe, South Sulawesi. However, amidst modern market competition,… petition, this traditional craft business faces challenges in optimizing its marketing mix strategy. This study analyzes the implementation of the 7Ps marketing mix strategy in the Nur Azizah Songkok Recca Enterprise in Bone Regency, South Sulawesi. Using a qualitative case study approach, data were collected through observation, in-depth interviews, and documentation. The findings show that the enterprise has implemented the seven elements of the marketing mix, namely product, price, place, promotion, people, process, and physical evidence. Product variety and artisan skills represent the main strengths of the business, while limited digital promotion, conventional payment systems, simple packaging, and a deteriorated business signboard remain key constraints. The study suggests that the enterprise should strengthen digital marketing, adopt cashless payment options, improve product packaging, and renew its physical identity to enhance competitiveness. These findings provide practical insights for culture-based MSMEs seeking to preserve traditional products while adapting to contemporary market changes.