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The practice of adulterating RON 92 (Pertamax) fuel has the potential to violate consumer rights and is contrary to applicable laws and regulations. The practice of mixing lower-quality fuel and then marketing it as RON 92 results in material and immaterial losses for users, including reduced vehicle performance and a loss of trust in business operators. This research aims to analyze the legal protections available to consumers regarding the practice of adulterating fuel based on Law Number 8 of 1999 concerning Consumer Protection and related provisions in Law Number 22 of 2001 concerning Oil and Gas. The research method used is normative legal research with a library research approach, through analysis of relevant laws and regulations, scientific literature, and secondary legal sources. The results indicate that the practice of adulterating fuel violates consumers' rights to comfort, security, safety, and accurate information as stipulated in Article 4 of the Consumer Protection Law, and violates the obligations of business actors as stipulated in Articles 7 and 8 of the Consumer Protection Law. Business actors can be held accountable for civil damages, dispute resolution through the Consumer Dispute Resolution Agency (BPSK), or subject to administrative and criminal sanctions in accordance with the Oil and Gas Law. Therefore, legal protection for consumers in cases of fuel adulteration requires an interconnectedness between effective government oversight, firm law enforcement, business actor accountability, and increased consumer legal awareness to ensure legal certainty and fairness in trade activities.

The tradition of marriage gift money (uang hantaran) in the Malay community of Melibur Village, Talang Muandau District, Bengkalis Regency, Riau Province, remains a customary practice preserved as a symbol of respect for the bride’s family and a sign of the groom’s seriousness. However, over time, its meaning has shifted toward materialism, as the amount is often determined by social status, educational background, and family prestige, potentially causing economic burdens, psychological pressure, delays, and even the cancellation of marriages. This study aims to describe the practice of uang hantaran and formulate an Islamic legal reconstruction of the tradition in accordance with the principle of simplicity. This research is a field research employing a qualitative approach. Data were collected through interviews, observations, and documentation, and were analyzed descriptively and analytically using the maslahahmursalah approach in Islamic law. The findings indicate that the practice of uang hantaran in Melibur Village is still maintained as part of local custom; however, its implementation has shifted from a symbolic function to a materialistic one, resulting in economic pressure on the groom’s family, psychological burdens on prospective spouses, and delays in marriage. From the perspective of maslahahmursalah, uang hantaran may be categorized as maslahahhajiyyah when determined flexibly and without imposing hardship, but it becomes mafsadah when the amount is excessive and causes harm. Therefore, the reconstruction of Islamic law regarding this tradition emphasizes that uang hantaran is not a legal requirement for marriage but rather a complementary customary practice whose determination should be based on deliberation, mutual consent, economic capability, and the principle of simplicity (taysir), so that it does not hinder the objectives of marriage in Islam.

This community service program aims to empower students. The lack of digital business literacy and knowledge about Islamic entrepreneurship in Islamic-based schools, as well as the application of sharia business principles, are the main drivers of this program. The activity implementation technique uses the Participatory Action Research (PAR) methodology. Problem identification, needs analysis, preparation of materials and instruments, pre-testing, training in Islamic business ethics and entrepreneurship theory, digital business practices, mentoring, post-testing, and program evaluation are some of the steps included in the activity. A total of 60 12th-grade students and ten instructors participated in this activity. The results showed that students' knowledge of sharia-based digital business, digital marketing skills, and entrepreneurial drive all increased. Student interest in starting a business increased by 78%, and participants' understanding of digital literacy increased by 85%. Furthermore, the program successfully instilled the ideals of Islamic entrepreneurship, such as accountability, honesty, and trustworthiness, as well as the prohibition of usury in digital business operations. In addition to encouraging the development of an Islamic digital business community within the educational environment, this community service program helps students develop personalities with noble morals, creativity, and adaptability.

This study aims to enhance knowledge, foster a sense of patriotism, and strengthen the national identity of Indonesian children living abroad through an educational program introducing Indonesian islands and culture. Children living in foreign environments tend to interact more frequently with foreign cultures, potentially leading to a lack of familiarity with their own national culture. Therefore, this activity was designed as a fun and easily understandable learning experience to ensure children remain connected to their roots. The method used was qualitative descriptive research employing direct observation of 30–40 participants over a two-week period. The program was implemented in several stages: orientation, presentation of materials, video screenings, drawing and coloring activities, and traditional games. The results showed that participants demonstrated increased knowledge of the names of major islands in Indonesia as well as various regional cultures, such as traditional attire, dances, and folk songs. Additionally, the program successfully fostered a sense of pride, boosted self-confidence, and strengthened camaraderie among participants. The children appeared enthusiastic and active in every activity provided. Thus, this educational program proved effective as a means to introduce Indonesian culture while strengthening the national identity of Indonesian children abroad through engaging and enjoyable learning methods.

This study aims to analyze the role of Gambus music education in fostering appreciation for Riau Malay oral traditions in higher education. Amidst the wave of globalization, oral traditions such as pantun, syair, and gurindam are losing their space of actualization among the younger generation. This research employs a descriptive qualitative approach with a case study design at the Universitas Islam Riau. Data were collected through participant observation, in-depth interviews, and documentation. The results indicate that Gambus music learning, which integrates experiential learning methods through three main stages textual analysis, musical practice, and contextual reflection is effective in increasing students' cultural awareness. The integration of oral tradition texts into musical materials allows students to deeply internalize moral, religious, and social values. Despite challenges such as limited curriculum time allocation, the involvement of expert practitioners serves as a key supporting factor in providing an authentic learning experience. The study concludes that Gambus music in higher education functions as a strategic educational instrument to revitalize oral traditions as a "living archive" and strengthen students' cultural identity.

This study aims to analyze students’ mathematical reasoning abilities in quadratic function material through the use of Desmos. The research employed a qualitative descriptive approach using a case study and usability testing method. Data were collected through post-tests and interviews involving students’ responses in solving quadratic function problems. The analysis focused on several indicators of mathematical reasoning, including procedural skills, conceptual understanding, and analytical ability. The results show that students generally demonstrate adequate procedural reasoning, particularly in substitution and computation tasks. They are also able to relate algebraic representations to geometric interpretations, such as determining intercept points and analyzing the direction of parabolas. However, limitations were found in conceptual understanding, especially in identifying graph characteristics without relying on procedural steps. The use of Desmos significantly supports the development of students’ mathematical reasoning by providing real-time visualization, facilitating exploration of function parameters, and enabling verification of results. Overall, Desmos contributes to enhancing procedural, conceptual, and analytical dimensions of mathematical reasoning, although its effectiveness depends on proper instructional design.

This community service program aimed to improve teachers’ understanding and practical skills in preparing Classroom Action Research (CAR) proposals among senior high school teachers in Semarang City, Indonesia. Classroom Action Research is an essential component of teacher professional development, enabling educators to systematically identify classroom problems, implement pedagogical interventions, and evaluate learning improvement strategies. However, many teachers encounter difficulties in translating classroom challenges into structured research proposals. The program involved 22 teachers from public and private senior high schools in Semarang City and was implemented using a participatory and experiential learning approach integrating theoretical sessions, guided discussion, proposal-writing workshops, and direct mentoring. Training materials covered classroom problem identification, research cycles, proposal structure, formulation of objectives, intervention design, and indicators of success. Program effectiveness was evaluated through direct assessment of participants’ practical outputs. The success indicator was defined as a minimum of 90% of participants being able to prepare an initial classroom action research proposal draft correctly according to the provided guidelines. The results showed that the program successfully achieved its target, with 90.9% of participants able to produce an initial classroom action research proposal draft containing essential proposal components. Participants also demonstrated improved confidence and understanding regarding classroom-based research implementation. This program contributes a practical professional development model integrating research literacy enhancement and hands-on proposal writing practice to strengthen teachers’ reflective teaching and evidence-based instructional improvement capacity.

The development of discipline in children should begin at an early age, particularly in managing time for studying, playing, worship, and resting. Simple time management assistance activities are conducted to help children understand the importance of time regulation and to foster disciplined behavior in their daily activities. These activities include introduction sessions, material delivery, question-and-answer sessions, as well as the distribution of gifts and group photo sessions, all carried out in an interactive and participatory manner. The results indicate that children begin to organize their daily schedules, follow instructions, and demonstrate gradual improvements in discipline. The research method used is Participatory Action Research (PAR), which actively involves children, facilitators, and teachers/ustadzah in the stages of planning, implementation, observation, and reflection. This approach enables children to learn by doing, fostering a sense of responsibility, critical thinking skills, and the development of positive habits in a sustainable manner. The activity is also supported by the active participation of teachers/ustadzah and the facilitation team to enhance the effectiveness of the learning process; therefore, simple time management assistance based on the PAR method is effective in fostering discipline and orderliness in children from an early age.

In the education system, learning evaluation plays a fundamental role in measuring students' academic competency achievement. This study was designed to comprehensively examine the importance of high-quality learning instruments and the strategic role of assessment frameworks in ensuring the instrument's alignment with the formulated learning objectives. A qualitative, descriptive approach based on a literature review was used. The study's findings indicate that assessment frameworks serve as a framework or blueprint capable of validly and reliably mapping competencies, material coverage, and assessment weighting. Systematic implementation of assessment frameworks has been proven to increase the transparency and accountability of evaluations, while also supporting educators in integrating Islamic values ​​into the context of Islamic Religious Education (PAI). However, its implementation still faces obstacles, including limited teacher competency in developing Higher Order Thinking Skills (HOTS)-based questions, as well as constraints related to time and resource availability.

Bullying and child harassment in the school environment are serious problems that can negatively affect students’ mental health, self-confidence, and academic achievement. Therefore, preventive efforts are needed through educational activities to increase students’ knowledge and awareness about the dangers of Bullying and child harassment. This activity aims to improve students’ understanding of Bullying and child harassment prevention through the Community Service Program (KKN) at SMAN 1 Koto Kampar Hulu. The method used was a descriptive quantitative approach with a one group pre-test post-test design involving 54 students as participants. The instrument used was a questionnaire administered before and after the educational session. The educational materials included the definition, types, impacts, and prevention efforts related to Bullying and child harassment in the school environment. The results showed an increase in students’ knowledge and awareness regarding the importance of preventing Bullying and child harassment in schools. Therefore, educational programs conducted through the KKN activity can be one of the efforts to create a safe and Bullying-free school environment.

Christian Religious Education (PAK) learning is undergoing significant changes in the Digital 5.0 era with the utilization of technology as the main support. This study explores the challenges in Christian learning and explores technological solutions that can improve student engagement and material comprehension. Through the literature study, the main challenges identified include the limitations of traditional learning resources and the lack of attractiveness of the materials. Solutions are proposed by integrating E-Learning, Virtual Reality, Augmented Reality, and mobile applications in the curriculum. Teacher training and support from the community and church are key in implementing this approach. Continuous evaluation and problem solving are the focus to ensure success and sustainability. The results show that technology contributes significantly to creating an interactive and relevant learning environment, building a solid foundation for increased student engagement and understanding of Christian teachings. By stepping with technology, this article presents a foundation for enhancing Christian Religious Education learning amidst the dynamics of the digital world

The rapid development of the Industrial Revolution (IR) 4.0  and the transition towards Society 5.0 demand an increase in digital literacy and a basic understanding of technology systems starting from secondary education. The Community Service (CS) Program conducted by the Department of Electrical Engineering Universitas Presiden aims to introduce the concepts of logic gates and digital systems to students of SMA 1 Cikarang Pusat. This CS integrates theoretical explanations and simulation practice using the online platform Circuitverse. This CS was evaluated using a Likert scale (1–4) questionnaire instrument, namely Expectation (Importance) and Performance, with a total of 40 student respondents. The analysis results show that all indicators received an average performance score above 3.30, with satisfaction indices ranging from 82.50% to 90.62%, which falls into the very high category. The indicator for the use of appropriate technology received the highest score of 90.62%, indicating the relevance of the material to current technological developments. The Importance–Performance Analysis (IPA) shows that most indicators are in the 'maintain performance' quadrant, indicating alignment between participants' expectations and the activity's performance. These findings suggest that the workshop is effective in enhancing students' understanding of basic digital system concepts while also fostering interest in engineering and technology fields. The activity underscores the strategic role of universities in bridging the technology literacy gap at the secondary education level in response to the challenges of the IR4.0 and Society 5.0.

Furniture is an item needed to complete the needs at home or residence, furniture helps the process of household chores become easier, as a place of storage, and creates comfort for its occupants. In this increasingly environmentally conscious era, product design is here to integrate the principles of sustainability. One of them is waste from industrial HPL (high pressure laminate) which is often thrown away without being utilized, Plywood waste and High Pressure Laminate (HPL) are by-products of the furniture industry that hold potential for reuse through sustainable design practices. This study aims to design a coffee table using plywood and HPL waste by applying the Design Thinking method, which includes the stages of empathize, define, ideate, prototype, and test. This method enables user needs analysis, idea exploration, and iterative prototype development. The results indicate that waste materials can be transformed into a coffee table that is strong, aesthetically appealing, and functional. The use of HPL enhances surface durability and visual value, while the plywood structure can be reinforced through simple joinery systems. The final product meets ergonomic, stability, and aesthetic criteria. In conclusion, Design Thinking is effective in transforming waste materials into high-value furniture and supports sustainable design practices

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.

This study examines the theological tension between devotion to God and the influence of mammon within the context of church ministry, as reflected in Matius 6:24. The research aims to analyze how materialism shapes attitudes, motivations, and practices in ecclesiastical service, particularly in relation to financial and administrative responsibilities. The method employed is a literature analysis combined with a phenomenological approach, allowing for an integration of biblical teachings and lived ministry experiences. The findings reveal that mammon is not merely a material entity but a competing spiritual force that demands human loyalty, often subtly influencing the orientation of ministry. Materialism, therefore, emerges as a critical challenge to ministerial integrity, especially in contexts involving financial management. The novelty of this study lies in its integration of theological reflection with empirical ministry experience, emphasizing that integrity in church service is not only tested in spiritual expressions but also in the handling of material resources. This study contributes to practical theology by offering a contextual understanding of how faithfulness to God must be maintained amidst the persistent tension between spiritual calling and material demands.

Hotel Naripan is still facing challenges in ensuring its employees can have optimal ability and motivation. This occurs in employee performance which can be caused by the lack of training, the absence of rewards from the company. The purpose of this study is to analyze the effect of work ability and motivation on employee performance at the hotel, so that it can be an evaluation material for management to improve service quality and hotel competitiveness in the increasingly competitive hospitality industry. The research method used is quantitative. This method is used to study a specific population or sample with data collection through research instruments. The analysis carried out is quantitative and uses statistical techniques, with the main purpose of testing the hypothesis that has been previously formulated. The results of this research based on multiple linear regression tests, the value of the multiple linear regression coefficient of the work ability variable, has a positive value of 0.635, the value of the multiple linear regression coefficient of the independent variable work motivation, has a positive value of 0.043

Dairi Regency is known as a regency that has a natural charm that can be a potential attraction that can attract many tourists. Puncak Sidiangkat is one of the destinations that is often visited because of its natural beauty which is still very beautiful and green. So this research was conducted with the aim of planning hotels and tourist areas using ecovillage design. Puncak Sidiangkat which has the opportunity to build hotels and glamping along with other tourist facilities, develops knowledge about the advantages of natural resources in Dairi Regency which blends directly with nature in an effort to achieve economic sustainability. The design of hotel and tourist areas is inseparable from how to design buildings that have a positive effect on the surrounding environment, especially the development of mountain tourism infrastructure and facilities as an environmentally friendly and energy-efficient tourism sector. This study also considers local cultural values, community participation, and the use of sustainable materials to ensure long-term environmental balance. Furthermore, the integration of renewable energy systems, proper waste management, and landscape conservation is emphasized to support eco-friendly tourism development. Through this approach, the project is expected to enhance tourist experience while preserving natural resources and improving the local economy.

The limited use of interactive learning media has made it difficult for students to visualize the functions and assembly flow of computer components. This study aims to design and develop an Android-based educational game called “Assemble & Learn” as an interactive medium for computer assembly lessons, specifically for vocational high school students at SMK Negeri 1 Tanjung Jabung Barat. The development process follows the Multimedia Development Life Cycle (MDLC), which includes the stages of concept, design, material collection, assembly, testing, and distribution. The learning content covers several core competencies: KD 3.2/4.2 on computer assembly, KD 3.3/4.3 on assembly testing, KD 3.4/4.4 on BIOS configuration, and KD 3.5/4.5 on operating system installation, with a focus on KD 3.2 and KD 3.5. Research instruments consist of validation questionnaires for subject-matter experts, media experts, and student trials using the System Usability Scale (SUS). Validation results show that the educational game received an average score of 94% from media experts and 100% from subject-matter experts, both categorized as “Highly Feasible.” Meanwhile, student trials indicated strong acceptance, with an average SUS score of 85% (excellent usability). In conclusion, the “Assemble & Learn” educational game offers an innovative solution to boost learning motivation, simplify material visualization, and provide flexible practice opportunities, thereby supporting the achievement of computer assembly competencies in an optimal and effective way.

This study aims to analyze the effect of Independent Board of Commissioners, Audit Committee, Family Ownership, and Voluntary Disclosure on Debt Costs in Basic Materials manufacturing companies listed on the Indonesia Stock Exchange for the period 2021-2023. Using purposive sampling and multiple linear regression analysis, the results show that the Independent Board of Commissioners and Family Ownership have a negative and significant effect on debt costs, while the Audit Committee, measured by meeting frequency, has a significant positive effect, and Voluntary Disclosure has no significant effect. These findings indicate that increased independent supervision and family control can reduce debt costs, but a high frequency of audit committee meetings can create a greater perception of risk in the eyes of creditors. This study has important implications for management and regulators in improving the quality of corporate governance and supervision to reduce debt costs.

The phenomenon of radical transparency in the Bottled Drinking Water (AMDK) industry in 2025 triggered a reputation crisis and a massive erosion of customer loyalty. This crisis began with negative sentiment on social media that led to surprise inspections by regulatory authorities of the industry leader's "Mountain Spring" claim. The unpreparedness of the communication infrastructure in presenting technical data in real time led to a decline in brand image and a significant correction in market share to a critical figure of 47.4%. This article aims to formulate a conceptual framework for adaptive and data-driven PR presentation techniques through the integration of real-time data visualization and narrative reframing strategies. The method used is a descriptive conceptual analysis by evaluating the chronology of incidents and PR responses during the crisis. The analysis results show that unidirectional communication patterns and static presentation materials are deemed to fail to face viral and spontaneous public audits in the digital space. As a theoretical and practical contribution, this article proposes a new model, The Spontaneous Technical Presentation Model, and recommendations for the development of a Crisis Presentation Kit for the FMCG industry. Through a theoretical approach that expands the theory of Image Restoration, this study confirms that corporate image restoration in the digital era is highly dependent on the precision and transparency of visual data presented during field qualification