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The rapid development of digital technology has significantly transformed financial transaction systems, including the use of securities. Conventional securities, which traditionally function as instruments of payment, evidence, and transfer of rights, face various challenges such as document forgery, loss, and administrative inefficiency. These conditions have encouraged the digitalization of securities, requiring adjustments within the Indonesian legal framework. This study aims to analyze the transformation of securities from conventional forms to digital formats within the perspective of Indonesian law and to assess the adequacy of existing regulations in addressing such developments. The research employs a normative juridical approach by examining primary legal materials in the form of statutory regulations and secondary legal materials consisting of legal literature and previous studies. The findings indicate that although electronic documents have been legally recognized as valid evidence, there is no specific and comprehensive regulation governing digital securities. Consequently, legal uncertainty remains regarding the transfer of rights, evidentiary strength, and legal protection for holders of digital securities. This study is expected to contribute conceptually to the development of adaptive legal regulations that ensure legal certainty and protection in the context of modern digital transactions.

Discretion exercised by election management bodies constitutes an administrative instrument that is functionally necessary to prevent stagnation in electoral processes under conditions of legal vacuum, normative ambiguity, or extraordinary circumstances. However, in practice, discretionary decisions often generate public concern and expose election officials to the risk of criminalization, particularly when such discretion is assessed through a formalistic and result oriented criminal law paradigm. This study aims to analyze the construction of criminal liability of election administrators for the use of discretion in conditions of electoral stagnation, by examining the paradigm shift from the old Indonesian Criminal Code to the new Criminal Code and its implications for criminal law enforcement under the Criminal Procedure Code. This research employs a normative legal method using statutory, conceptual, and case approaches. The findings reveal that the old Criminal Code tended to facilitate policy criminalization by emphasizing formal violations and objective consequences, whereas the new Criminal Code introduces a substantive approach centered on subjective fault, official purpose, and rationality of action. Nevertheless, the lack of synchronization with the Criminal Procedure Code which remains focused on conventional evidentiary standards causes discretionary actions of election administrators to remain legally ambiguous. Therefore, harmonization between substantive criminal law and criminal procedure law, along with a transformation in law enforcement reasoning, is essential to ensure that discretion exercised by election officials is assessed proportionally, contextually, and in line with democratic principles.

Indonesia's increasing economic growth has intensified competition in the business world, particularly in the Indonesian banking sector, from conventional to sharia-compliant. Furthermore, the entry of foreign banks has made business activities in Indonesia increasingly complex. The stock market is a crucial source of funding for companies. Publicly listed companies can increase their funding sources by selling ownership in the capital market. Dividends are the distribution of company earnings to shareholders in the form of cash, assets, or other forms. Dividend policy is a policy for sharing company profits with shareholders, which is announced in the form of dividends and retained earnings for the benefit of company growth. The proportion of dividends distributed to shareholders depends on the company's profitability and dividend policy. The percentage of profits distributed to shareholders in the form of dividends is called the Dividend Payout Ratio.Differences in calculations in determining financial ratios in banking companies are an interesting focus in this study. The study results show quite significant results between financial ratios and managers' decisions in making dividend policy decisions. In the future, the results of this study are expected to be a consideration and reference for investors who want to enter the world of investment, especially in the banking sector.

The amalgamation and flotation methods are widely used by miners because the methods are simple, fast and easy. The purpose of this study was aims to test the effectiveness of gold recovery using the amalgamation and flotation methods in conventional gold processing. The research methods used were observation and testing using the amalgamation and flotation methods in conventional gold processing. The effectiveness analysis was carried out by calculating the percentage of gold produced in the amalgamation and flotation processing methods. The test was carried out on 10 samples, each weighing 10 kg. The amalgamation process used a Hg solution, while flotation used a detergent reagent. The total primary gold processing using the amalgamation method was 11.46 grams, while the total primary gold recovery using the flotation method was 12.15 grams. The results of gold processing using the flotation method were higher than those using amalgamation because flotation can separate gold more efficiently from ore containing various impurity minerals. Meanwhile, the amalgamation method, which uses mercury, tends to be less effective and loses some of the gold because it only binds very fine and dispersed gold particles, while flotation can handle ore with lower gold content and larger gold particles.

The coal mining industry requires accurate stockpile volume measurements for inventory and production reporting. Conventional methods have limitations in accuracy, efficiency, and safety. This study compares the accuracy and efficiency of coal stockpile volume measurements using a Terrestrial Laser Scanner (TLS) Leica MS60 and an Unmanned Aerial Vehicle (UAV) DJI Matrice 4E, validated by the ASTM D6172-98 standard. Conducted on five Run of Mine (ROM) coal stockpiles covering 13,500 m² at PT XYZ, Lahat, South Sumatra, the TLS method used 43 scan positions, while the UAV employed 430 aerial images with specific flight parameters. Data were processed using Leica Infinity, Surpac, and Agisoft Metashape. The results showed volumes of 94,076 m³ (TLS) and 94,965 m³ (UAV), with a difference of 889 m³ (0.95%). Volume deviations ranged from 0.48% to 1.89%, with an average of 1.42%, all within the ASTM tolerance (<2%). Time efficiency analysis revealed that the UAV method required 200 minutes (3.33 hours), saving 63.3% (approximately 6.17 hours) compared to the TLS method (570 minutes). The largest efficiency gain occurred during field data acquisition, with an 85% reduction in time. This study confirms UAV photogrammetry as a valid, accurate, and efficient alternative for coal stockpile volume measurement in mining.

The problem of urban flooding is a growing issue due to high population density, increasing volumes of plastic waste, and the reduction of water absorption areas. The use of conventional paving blocks, which are impermeable, further exacerbates flooding conditions because they do not allow water to infiltrate into the soil. This study aims to develop an innovative plastic waste-based paving block incorporating rice straw and sugarcane bagasse, along with the integration of phytoremediation concepts as a solution for urban flood mitigation. The method employed was an experimental approach involving the following stages: material preparation, plastic incineration, material mixing, molding, and testing of water absorption capacity and compressive strength. The results showed that paving blocks with a combination of plastic waste, rice straw, and sugarcane bagasse had the highest water absorption rate of 34% and compressive strength of 21 kg/cm², meeting SNI standards. The addition of natural materials containing silica was proven to enhance the material’s porosity and strength. Additionally, the application of phytoremediation using water hyacinth has the potential to improve the quality of water seeping into the soil. Thus, this phytoremediation-based paving block innovation can serve as an effective alternative solution to reduce flood risks while supporting sustainable waste management and environmental stewardship.

The use of moldboard plows in agricultural land preparation often faces wear problems on the share component, leading to increased maintenance time and reduced operational efficiency. This study aims to design and analyze a modular concept for the plow share to improve maintenance and repair efficiency without compromising structural performance. The research methods include field observation, component dimension measurement, design modeling using CAD software, and structural analysis using the Finite Element Analysis  (FEA) method. In addition, maintenance ease was evaluated through a questionnaire based on a rating scale. The results show that the modular design significantly improves maintenance and repair efficiency, with an average score of 4.59 categorized as very good. Structural analysis indicates that the modular design reduces maximum stress on the moldboard and slightly decreases deformation, reflecting improved structural stiffness compared to the conventional design. However, the Safety Factor on the share component remains below the acceptable limit, indicating the need for further development. Overall, the modular design provides an effective solution to enhance maintenance efficiency while maintaining the structural performance of the moldboard plow.

This study aims to evaluate the effectiveness of implementing an application-based water payment system as a strategy to reduce consumer arrears. Payment delinquency remains a significant challenge in the management of water utility services, often driven by low payment discipline, limited access to transaction channels, and the inefficiencies of conventional manual systems. Employing a quantitative approach, this research utilizes comparative data collected before and after the implementation of the digital payment application, supported by statistical analysis to measure changes in consumer payment compliance. The findings indicate that the adoption of an application-based payment system has a substantial positive impact on reducing arrears, as reflected in increased payment timeliness and a decline in the number of delinquent consumers. Features such as ease of access, automated notifications, and transparent billing information are proven to enhance consumer compliance behavior. These results underscore that the digitalization of payment systems can serve as an effective solution for improving operational efficiency and supporting the sustainability of water utility services.

This study was conducted with the aim of explaining the influence of the project based learning model assisted by four square on the ability to write argumentative texts of class XI students of SMA Negeri 12 Semarang and its implications in learning to write. The method used in this study is a quantitative quasi-experimental approach with the nonequivalent posttest-only control group design. This design was chosen to determine the difference in the ability to write argumentative texts between students taught using the project based learning model assisted by four square and students taught with ordinary or conventional learning models. The results of the study showed that there was an influence of the project based learning model assisted by four square on students' argumentative text writing skills through the non-parametric Mann-Whitney U test of 115.500, a Z value of -4.973, and a significance value (Asymp. Sig. 2-tailed) of <0.001. Because the significance is smaller than 0.05, the null hypothesis (H₀) is rejected. It can be said that there was a significant difference between the results of the argumentative text writing test of students in the experimental class and the control class. Based on this, the application of the project based learning model assisted by four square can be used as an alternative learning model that has a positive influence on the ability to write argumentative texts of class XI students and has implications for writing learning.

This research is based on the importance of implementing the Islamic Religious Education (PAI) curriculum in shaping the character and religious understanding of students in madrasas who still face various challenges in practice. The aim of this research is to examine the implementation of the PAI curriculum which includes aspects of planning, implementation and evaluation of learning. The research uses a qualitative approach with the type of library research through reviewing various relevant scientific literature. The research results show that the implementation of the PAI curriculum has been carried out, but has not run optimally, especially in the implementation of learning which is still conventional and evaluations which focus more on cognitive aspects. The research conclusions show that the success of curriculum implementation is influenced by teacher competency, innovation in learning, and the development of a more comprehensive evaluation system.

Edentulism is a condition of total tooth loss that has a significant impact on the efficiency of mastics, phonetics, and facial aesthetics. This case report presents the rehabilitation of a 72-year-old female patient with a condition of total mandible edentulus using two standard-diameter implants that support the overdenture with a locator retention system. Treatment procedures include clinical evaluation, radiographic analysis, implant placement, prosthesis placement, as well as follow-up evaluation to assess function and comfort. The results of the treatment showed an increase in patient retention, stability, and comfort in daily activities. In addition, patients reported improved confidence and quality of life after the use of implant-based overdentures. These findings confirm that overdenture with mandibular implant support is a predictive, effective, and reliable rehabilitation method in treating total edentulism. The success of this case provides clinical evidence that implant-based approaches are able to overcome the limitations of conventional prostheses, as well as being a solution that supports the functional and psychosocial aspects of elderly patients. Thus, implant-based overdenture can be recommended as the primary therapeutic option in the rehabilitation of mandibular edentulism.

This study aims to analyze in depth the effectiveness of Realistic Mathematics Education (RME) and ethnomathematics in improving students’ mathematical abilities through a Systematic Literature Review (SLR) approach. This study is motivated by the low level of students’ conceptual understanding, mathematical literacy, and mathematical communication skills, which are still dominated by conventional teaching approaches. Data were collected from ten research articles relevant to the topics of RME and ethnomathematics. The analyzed articles employed various research methods, including experimental research, classroom action research, and research and development (R&D). The results of the review indicate that the implementation of RME is consistently effective in enhancing students’ mathematical abilities, such as critical thinking, problem-solving, mathematical communication, and mathematical literacy. The RME approach, which is based on real-life contexts, helps students understand mathematical concepts more deeply and meaningfully. In addition, the integration of culture through ethnomathematics strengthens the effectiveness of learning by providing contexts that are closely related to students’ daily lives, thereby increasing motivation, engagement, and active participation in the learning process.Furthermore, the findings reveal that the success of culture-based RME is influenced by instructional design, the selection of appropriate contexts, and the teacher’s role in managing the learning process. Therefore, culture-based RME can be considered an effective and relevant approach to improving the quality of mathematics education.

The implementation of active learning models such as Problem-Based Learning (PBL) and Project-Based Learning (PjBL) at the junior high school level is often constrained by the complexity of instructional time management. This study aims to examine the role of the principal’s instructional leadership in addressing time management dilemmas in the implementation of active learning at SMP Negeri 6 Panyabungan. A qualitative approach with a descriptive method was employed in this study. Data were collected through non-participant observation and in-depth interviews with key informants, namely the school principal and an Islamic Religious Education (PAI) teacher selected as representatives of field conditions. The findings reveal three main results. First, teachers’ time management constraints are caused by weak control of learning activity transitions, noisy classroom conditions during group division, and low initial student learning readiness. Second, the principal implemented several concrete interventions, including the adoption of block scheduling, clinical supervision focused on classroom management, and the optimization of the Subject Teacher Forum (MGMP) or school learning community. Third, these interventions improved teachers’ instructional efficiency, strengthened classroom activity control, and created a more structured active learning process. However, sustainability challenges remain, particularly resistance from senior teachers who tend to prefer conventional teaching methods. This study concludes that adaptive and solution-oriented instructional leadership is a key factor in addressing the complexity of time management constraints in active learning implementation.

This study addresses the limited integration of environmental education, Islamic values, and creative learning practices in existing pedagogical models. It proposes an eco-friendly Islamic calligraphy approach as an innovative medium for recycling-based learning that promotes both ecological awareness and spiritual development. The study adopts a Participatory Action Research (PAR) design involving 22 students from diverse educational levels at Sanggar Bimbingan Bintang Sembilan. Data were collected through structured observations, semi-structured interviews, and documentation, and analyzed using an iterative qualitative framework to identify changes in students’ cognitive, affective, and behavioral domains. The findings indicate that students initially exhibited low environmental awareness, minimal engagement, and limited ability to utilize recyclable materials creatively. Following the intervention, there was a substantial increase in active participation, creative output, and conceptual understanding of environmental sustainability. Students also demonstrated observable behavioral shifts, particularly in waste reuse practices and environmental responsibility. In addition, the incorporation of Islamic values reinforced ethical awareness and strengthened students’ sense of stewardship toward the environment. This study contributes to the advancement of interdisciplinary learning by offering a contextual and practice-oriented model that integrates environmental education, religious values, and art-based pedagogy. The proposed approach not only enhances student engagement but also fosters holistic learning outcomes, making it a viable alternative to conventional instructional methods in sustainability education.

Manggis Village, Mojosongo District, Boyolali Regency has considerable potential in local products, particularly in agriculture and processed food sectors. However, limited digital literacy among community members has caused marketing practices to remain conventional, with limited market reach and low promotional effectiveness. This community service program aims to improve community skills in creating, managing, and distributing digital content to support the promotion of local products. The methods used include training, hands-on practice, and mentoring in producing photo and video content, writing promotional captions, and managing social media platforms. The activity was conducted over two days and involved local SMEs, youth organizations, and village officials. The results indicate an improvement in participants’ ability to produce attractive digital content and manage social media accounts more systematically. In addition, a village digital media team was formed, and a two-week content plan was developed to ensure continuity. This program positively contributes to strengthening community capacity in utilizing digital media for broader, sustainable local product promotion while supporting economic competitiveness among rural communities in the future.

This study aims to examine the effects of applying a Problem-Based Learning (PBL) method combined with PhET simulation tools on enhancing critical thinking skills among eighth-grade students at SMP Negeri 4 Singaraja when learning vibration and wave topics. It adopted a quasi-experimental approach with a Pretest-Posttest setup and non-equivalent control group design. The participant cohort comprised 75 students distributed across two groups: the treatment group (n=38) who engaged in learning activities using PBL supplemented by PhET simulation, and the comparison group (n=37) who received PBL instruction without PhET simulation support. Data collection was conducted through essay-type assessment instruments containing 7 questions designed to evaluate critical thinking competencies based on Ennis' theoretical framework. Data processing employed descriptive statistical analysis, N-Gain Score computation and ANCOVA testing were conducted at a 0.05 significance level. Results showed the treatment group's average Posttest score at 84, compared to 66 for the control group. The ANCOVA produced an F-value of 103.701 (p < 0.001), confirming a statistically significant difference in critical thinking skills between the groups. The adjusted mean Posttest scores were 83.99 for the treatment group and 66.01 for the comparison group, reflecting a differential of 17.99 points. Consequently, the findings substantiate that the integration of PBL with PhET simulation demonstrates greater effectiveness in fostering students' critical thinking skills in comparison to conventional PBL implementation without technology-enhanced simulation assistance.

Human resource management (HRM) plays a crucial role in improving the quality of da’wah programs in mosques. This study aims to analyze the implementation of HRM in managing da’wah programs at Masjid Raya Pematang Siantar, as well as to identify obstacles and solutions to improve the effectiveness of da’wah activities. The research used a qualitative approach with interview, observation, and documentation techniques. Informants consisted of mosque administrators, preachers (da’i), and active congregants. The results showed that HRM in the da’wah programs already has a fairly clear organizational structure, but several aspects still need improvement. The recruitment of preachers is still conducted informally without clear competency standards, and there are no specialized training programs for preachers. Congregational participation also remains fluctuating. Another weakness is the minimal use of technology in disseminating da’wah information, as promotion is still carried out conventionally without optimizing digital platforms. In addition, limited funding and the lack of professional management personnel are major challenges. Solutions that can be implemented include improving preacher recruitment and training systems, utilizing technology in da’wah dissemination, and optimizing financial management through effective fundraising strategies. With better HRM implementation, da’wah programs at Masjid Raya Pematang Siantar are expected to operate more professionally and provide broader positive impacts on society

Strawberries are horticultural commodities that are highly susceptible to postharvest deterioration due to their high respiration rate, microbial activity, and oxidative degradation, resulting in a relatively short shelf life. This study aimed to evaluate the effectiveness of edible coatings in extending strawberry shelf life through a systematic literature review (SLR) approach. Literature was collected from several scientific databases using keywords related to edible coating, shelf life, and strawberry, covering publications from 2019–2026. From an initial 109 articles, a selection process based on inclusion and exclusion criteria resulted in 35 articles specifically discussing the application of edible coatings on strawberries. The synthesis results showed that all studies reported an extension of shelf life after edible coating application, although the effectiveness was influenced by the type of material, formulation, and storage conditions. Chitosan was the most widely used coating material due to its natural antimicrobial activity and excellent film-forming ability. The incorporation of bioactive compounds such as essential oils, plant extracts, and phenolic compounds was proven to enhance antifungal and antioxidant activities. In addition, nanotechnology-based systems demonstrated better preservation performance compared to conventional systems. However, methodological standardization and industrial-scale validation are still required to support commercial implementation.

Heating, Ventilating, and Air Conditioning (HVAC) systems often suffer from significant energy wastage due to their inability to adapt to real-time environmental changes, leading to high operational costs. Although Proportional-Integral-Derivative (PID) controllers are widely used for their simplicity and reliability, they struggle to handle the complex dynamics of modern environments, requiring advanced optimization to enhance efficiency. This study aims to optimize PID controllers by integrating the Queen Honey Bee Migration (QHBM) algorithm to improve HVAC performance, energy efficiency, and adaptability. The research method employs an experimental approach that compares the performance of conventional PID controllers with PID controllers optimized using the QHBM algorithm under dynamic environmental conditions. The results show that the PID-QHBM system significantly outperforms the conventional PID system, achieving a rise time of 0.2649 seconds and a settling time of 1.6874 seconds with an almost negligible steady-state error of 9.4991e-08. Although it experiences a slight overshoot of 16.3810%, the system stabilizes quickly and maintains the target temperature efficiently. In contrast, the conventional PID controller exhibits slower response characteristics, with a rise time of 1.3730 seconds, a settling time of 2.5144 seconds, and a larger steady-state error of 0.0361. This study demonstrates that integrating the QHBM algorithm into PID controllers provides a more effective solution for real-time temperature control, offering substantial improvements in energy efficiency and system performance. The findings contribute to advancing intelligent HVAC control systems that can better adapt to environmental variations while minimizing operational costs.

Hydrogen-based hybrid microgrid systems have emerged as a promising solution to enhance renewable energy integration and improve energy supply reliability. By combining renewable sources such as solar and wind with hydrogen production and storage technologies, these systems address the intermittency of renewable power while ensuring continuous energy availability. This study evaluates the techno-economic feasibility, environmental impact, and scalability of hydrogen-based hybrid microgrids, with a focus on cost-effectiveness and system performance under varying operating conditions. Simulation tools, including HOMER Pro and MATLAB Simulink, are used to model the system and conduct sensitivity analyses on hydrogen production costs and demand fluctuations. Key performance indicators such as Levelized Cost of Energy (LCOE), Net Present Value (NPV), and CO₂ emissions reduction are assessed. The results show that although the system requires a high initial investment, it becomes economically viable over time due to reduced operational costs and improved efficiency. Additionally, the system demonstrates significant environmental benefits, outperforming conventional fossil fuel-based systems in terms of emissions reduction. Sensitivity analysis further indicates that advancements in hydrogen production technologies could substantially enhance economic feasibility. Overall, hydrogen-based hybrid microgrids offer a reliable and low-carbon energy solution, supporting sustainable energy transitions and reducing dependence on fossil fuels.