Abstract:This study highlights the problem of managing teak wood raw materials in the form of boards at UD Gemilang, Gunungsitoli City. The company often experiences shortages or excess inventory due to a conventional ordering system…
stem that is not based on optimal demand calculations. This inefficiency causes wasteful costs and disrupts the smooth production process. The main objective of this study is to analyze current inventory management and apply the EOQ (Economic Order Quantity) method to determine the optimal order quantity, as well as evaluate its impact on cost efficiency and production operations. The EOQ method is expected to be a systematic and rational solution for managing inventory more efficiently. This study uses a descriptive quantitative approach. Data were collected through direct interviews with business owners and documentation of raw material purchasing and usage reports for 2024. The analysis was conducted using the EOQ formula to calculate the optimal order quantity, ordering costs, storage costs, safety stock, reorder point, and total inventory cost (TIC). The analysis results show that the optimal order quantity for teak wood raw materials is 282 boards, with an ordering frequency of 6 times a year. This number is more efficient than the actual ordering system which is carried out monthly without a fixed calculation. The recommended safety stock is 22 boards, with a Reorder Point (ROP) of 36 boards. The implementation of the EOQ method successfully reduced total inventory costs from Rp6,768,000 to Rp3,496,800.
Abstract:The main objective of this study is to compare and analyze the effectiveness of the MRP (Material Requirement Planning) method in optimizing raw material inventory management in the Nias Tofu business. This study uses a…
mixed method. Primary data in this study were obtained directly from the Nias Tofu business through observations and interviews, while secondary data were obtained from the company in the form of production data from the Nias Tofu Product business in 2024. Data analysis was conducted using descriptive analysis techniques and the steps taken in the method analysis.MRP. According to the analysis results, the 2024 soybean raw material purchasing and demand data using the conventional method showed a shortage of raw materials of 14,200 kg with an order frequency of 14 times. Inventory management experienced inefficiencies, namely storage costs of IDR 1,600,000 and ordering costs of IDR 400,000, and raw material shortages still occurred, while the application of the MRP method resulted in order planning with an order frequency of 6 times, a fixed order quantity of 16,784 kg, and a much lower total inventory cost of IDR 335,160. The implementation of the MRP method has proven successful in eliminating raw material shortages and reducing operational costs so that the production process runs more smoothly and efficiently. This study proves that the application of MRP is effective in managing raw materials and optimizing production in the Nias Tofu business, making a significant contribution to smooth production and inventory cost efficiency.
Abstract:This study aims to, 1) analyze the differences in problem-solving skills between students who are given treatment in the form of applying the Project Based Learning model with students who are given a conventional model…
in Economic Learning at MAN Jeneponto, 2) to analyze the effect of applying Project Based Learning on the problem-solving skills of class X students in economic learning at MAN Jeneponto. The research method used is quasi-experiment with Nonequivalent (Pretest and Posttest) Control Group Design. Data collection methods are through tests (pretest and posttest), questionnaires, and documentation. The number of samples in this study were 76 students, where in the experimental class there were 38 students and in the control class 38 students. The data analysis used is the N-Gain of the experimental class and control class, as well as the experimental class Hypothesis test. The results of this study indicate that the N-Gain of the experimental class is in the high and effective category, while the control class is in the low and less effective category. This means that the application of Project Based Learning is effective on the problem solving skills of class solving ability of class X students in economic learning at MAN Jeneponto
Abstract:Dinas Perhubungan Provinsi Jambi masih menghadapi kendala dalam pengelolaan surat masuk, surat keluar, dan disposisi yang dilakukan secara konvensional sehingga kurang efisien dan berisiko menimbulkan penumpukan dokumen.…
Penelitian ini bertujuan merancang Sistem Informasi Persuratan berbasis website untuk meningkatkan efektivitas pengelolaan administrasi. Sistem dikembangkan menggunakan metode Prototype dengan pemodelan Use Case Diagram dan Activity Diagram. Hasil penelitian menunjukkan bahwa sistem mampu mempermudah pengelolaan surat, disposisi digital, pengarsipan dokumen, serta penyampaian informasi secara lebih cepat dan terintegrasi.
The Jambi Provincial Transportation Agency still faces challenges in managing incoming mail, outgoing mail, and dispositions through conventional processes, resulting in inefficiency and document accumulation risks. This study aims to design a web-based Correspondence Information System to improve administrative management effectiveness. The system was developed using the Prototype method and modeled with Use Case Diagrams and Activity Diagrams. The results show that the system facilitates correspondence management, digital disposition, document archiving, and information delivery in a faster and more integrated manner.
Abstract: The ability to speak English is very important, especially for coastal communities such as those on Tegal Island, which has tourism potential. However, students at the Pesona Pulau Tegal Community Learning Center (PKBM)…
KBM) still have difficulty communicating, especially in English, because learning has tended to be conventional, focusing on memorization and grammar rather than practical communication. This creates a gap between the need for speaking skills and the teaching methods used, reinforcing students' fear and lack of confidence. Based on these issues, this Community Service activity aims to improve students' speaking skills through the application of the Communicative Language Teaching (CLT) method integrated with the Playful English approach, which involves enjoyable learning through games, role-play, and creative activities. The methods used include guided speaking exercises, conversation simulations, and collaborative projects such as creating promotional posters for beach tourism in English. The results show a significant improvement in students' fluency, confidence, and active participation. Students began to speak more boldly, practice simple sentences, and express ideas spontaneously. The classroom atmosphere became livelier and more enjoyable with minimal psychological barriers such as fear of making mistakes. The implications of this activity are that the CLT approach combined with elements of joy can serve as an effective learning model in non-formal institutions. This method not only enhances language skills but also empowers students socially and emotionally, and can be replicated in similar communities.
Abstract:This research is a quasi-experimental study conducted to improve students' mathematical problem-solving abilities, one of which is through the use of the Self-Directed Learning (SDL) instructional model. The objectives of…
f this study are to determine (a) the learning process using the Self-Directed Learning model; (b) the difference in improvement of students' mathematical problem-solving abilities between those using the Self-Directed Learning model and those receiving conventional (expository) instruction; and (c) students' attitudes toward mathematics learning using the Self-Directed Learning model. Data were collected using research instruments including tests in the form of mathematical problem-solving ability questions and non-tests such as student response questionnaires toward learning using the Self-Directed Learning model. This study was conducted at MAN 1 Gorontalo, with class X IPA-1 as the experimental class and class X IPA-2 as the control class, focusing on vector material. Based on the research results and n-gain data analysis, it was found that: (a) the description of the teacher and student learning process on quadrilateral vector material using the Self-Directed Learning model falls into the good category; (b) the improvement in mathematical problem-solving ability of students who received learning with the Self-Directed Learning model showed a moderate increase. Meanwhile, the improvement in mathematical problem-solving ability of students who received conventional learning showed a low increase. Therefore, there is a difference in the improvement of mathematical problem-solving ability between students using the Self-Directed Learning model and those using conventional learning; (c) most students who received learning using the Self-Directed Learning model responded positively to mathematics learning using this model.
Abstract:Karstification is the dominant geological process controlling groundwater circulation and permeability in carbonate aquifers. Through the dissolution of carbonate rocks, karst processes create highly heterogeneous systems…
s characterized by fractures, conduits, and interconnected channel networks that significantly influence groundwater flow dynamics. This literature review aims to synthesize current knowledge regarding the effects of karst on water circulation and permeability in carbonate aquifers based on hydrogeological, hydrochemical, geophysical, and numerical modeling studies from various regions worldwide. The review shows that karstification substantially enhances hydraulic conductivity and produces complex flow regimes ranging from diffuse fracture flow to turbulent conduit flow. The epikarst zone plays an important role in regulating infiltration and recharge distribution, while tectonic structures such as faults and fractures strongly control groundwater pathways and aquifer compartmentalization. Karst aquifers also exhibit strong spatial variability in permeability, making groundwater flow and contaminant transport difficult to predict using conventional hydrogeological approaches. In addition, the integration of equivalent porous medium (EPM), discrete fracture network (DFN), and conduit network (CN) models is essential for accurately representing karst aquifer behavior. Understanding the influence of karstification on groundwater circulation is therefore crucial for sustainable groundwater management and aquifer vulnerability assessment, particularly in regions facing increasing water demand and climate change pressures.
Abstract:The changing characteristics of children’s learning in the digital era have created a need for learning environments that are more interactive, visual, and experience-based. Conventional learning is increasingly considered…
ered less effective in maintaining children’s engagement due to limited opportunities for exploration and direct interaction during the learning process. In response to this condition, the concept of edutechment has emerged as an approach that integrates educational and entertainment elements to create more enjoyable and meaningful learning experiences. This study aims to analyze the implementation of edutechment at Taman Pintar Yogyakarta as a nonformal educational tourism space. This study employed a qualitative approach using a descriptive observational research design. Data were collected through direct observation, semi-structured interviews, documentation, and field notes involving child visitors, guides, and employees of Taman Pintar. The data were analyzed descriptively through the stages of data reduction, data presentation, and conclusion drawing. The findings revealed that Taman Pintar Yogyakarta has implemented the concept of edutechment through the integration of technology, multimedia, simulations, and educational play activities within various interactive attractions. Children were actively involved in exploration, experimentation, and direct interaction with learning media, creating more concrete and enjoyable learning experiences. However, the study also found that some children tended to focus more on entertainment aspects than on understanding educational concepts. Therefore, stronger facilitation and reflective learning strategies are needed to optimize the implementation of edutechment.
Abstract:This paper presents the design and performance evaluation of a high-voltage direct current (DC) generator based on the Cockcroft–Walton (CW) voltage multiplier for laboratory-scale applications in electrical engineering.…
g. Conventional high-voltage generation methods often involve bulky transformers and complex circuitry, making them less suitable for compact and cost-effective laboratory use. To address these limitations, a modular CW-based system is proposed, integrating a high-frequency input source with an optimized diode-capacitor ladder network. The proposed system is designed to achieve high DC voltage output in the kilovolt range while maintaining acceptable levels of ripple and efficiency. Experimental results show that the system can achieve up to 86% of the theoretical output voltage under no-load conditions, with an efficiency of around 70.8%. Furthermore, the ripple voltage of the generated output voltage is very small, demonstrating stable performance suitable for laboratory applications. The proposed design offers a compact, cost-effective, and reliable solution for high-voltage DC generation, making it highly suitable for educational and low-power applications.
Abstract:The rapid expansion of the digital economy in Indonesia has significantly transformed business practices and, consequently, the landscape of business dispute resolution. This study presents a critical comparative analysis…
s of arbitration—particularly online arbitration—and conventional court litigation in resolving business disputes in post-digitalization Indonesia. The research focuses on two principal aspects: legal certainty and time efficiency. Using normative juridical analysis supported by relevant legal theories, including Progressive Legal Theory, Development Legal Theory, and Legal Convergence Theory, this study examines the adaptability of dispute resolution mechanisms within the framework of Law Number 30 of 1999 on Arbitration and Alternative Dispute Resolution and related regulations governing electronic court administration. The findings indicate that arbitration, especially through Online Dispute Resolution (ODR), offers greater procedural flexibility, shorter resolution time, and cost efficiency compared to conventional litigation, which remains burdened by rigid procedural stages, administrative complexity, and case backlogs. Digitalization has further enhanced arbitration efficiency by enabling electronic submission of documents, virtual hearings, and digital evidence examination. However, challenges persist, including technological infrastructure limitations, data security concerns, and the need for regulatory harmonization to ensure enforceability and equal legal legitimacy with court decisions. This study concludes that while digital arbitration demonstrates superior time efficiency and practical advantages, regulatory reform and institutional strengthening are essential to guarantee optimal legal certainty in Indonesia’s evolving digital business environment.