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This study aims to explore consumer perceptions regarding transaction security on digital marketplaces and to evaluate the impact of community-based educational interventions. A descriptive qualitative method was employed, involving in-depth interviews with ten active marketplace users in Tasikmalaya City. The findings revealed that consumers’ sense of security is shaped by personal experience, understanding of platform security features, and digital literacy. Prior to the intervention, most participants expressed high concern over data breaches and fraud, often opting for cash-on-delivery (COD) as a form of protection. Following a series of community education sessions—comprised of discussions and safe transaction simulations—significant changes were observed in consumer attitudes and behavior. Participants became more aware of the importance of verifying sellers, reading reviews, and using secure payment methods. The study concludes that localized community education effectively enhances awareness and trust among consumers, especially in areas where digital literacy remains limited.

This study aims to analyze the operational conditions of the raw material warehouse at PT Nutrition And Special Foods Division and evaluate the potential implementation of an Internet of things (IoT)-based warehouse management system (WMS) to improve the efficiency and accuracy of warehouse management. A descriptive qualitative approach was used, including field observations and interviews with several operators and warehouse staff. The findings indicate that the currently used manual system causes various obstacles, such as input errors, slow picking processes, and limited stock tracking capabilities. A simulation of WMS implementation using RFID and barcode technology showed significant improvements, including approximately 40% increase in picking  efficiency, around 90% improvement in stock recording accuracy, and a reduction of input errors by up to 85%. The application of this technology also supports real-time tracking using FIFO/FEFO methods and enhances visibility and decision-making in logistics operations. Thus, the integration of RFID, barcode, and QR code in WMS proves effective in transforming warehouse management into a faster, more accurate, and responsive system aligned with supply chain dynamics.

This socialization activity aims to enhance students' understanding of business planning, particularly in the acrylic flower board decoration industry. The main problem faced by the community partners, who are aspiring student entrepreneurs, is the lack of practical and theoretical knowledge in designing comprehensive and applicable business plans. The proposed solution is integrated training that includes basic business planning theory, marketing strategy, financial analysis, and hands-on simulation focused on creative products. The methods used in this activity involve a combination of material presentations, group discussions, and direct practice in preparing business plans using the acrylic flower board as a case study. The results of the activity indicate a significant increase in students’ interest, understanding, and skills in the business planning process, as evidenced by higher evaluation scores before and after the training.This socialization activity aims to enhance students' understanding of business planning, particularly in the acrylic flower board decoration industry. The main problem faced by the community partners, who are aspiring student entrepreneurs, is the lack of practical and theoretical knowledge in designing comprehensive and applicable business plans. The proposed solution is integrated training that includes basic business planning theory, marketing strategy, financial analysis, and hands-on simulation focused on creative products. The methods used in this activity involve a combination of material presentations, group discussions, and direct practice in preparing business plans using the acrylic flower board as a case study. The results of the activity indicate a significant increase in students’ interest, understanding, and skills in the business planning process, as evidenced by higher evaluation scores before and after the training. 

This community engagement article aims to enhance the legal awareness and digital literacy of students at SMA Negeri 1 Wangon in addressing the growing phenomenon of sexual violence in digital spaces, particularly in the era of artificial intelligence. The primary issue faced by Generation Z today is a lack of legal understanding and weak digital ethics, which makes them vulnerable to becoming both victims and perpetrators of online sexual violence. The program employed a participatory approach using methods such as observation, group discussions, case simulations, and evaluation through pre- and post-tests. The results indicate that the legal and digital literacy education program significantly improved participants’ understanding of legal frameworks, including the Law on Sexual Violence Crimes (UU TPKS) and the Electronic Information and Transactions Law (UU ITE). The program also fostered awareness of digital ethics and the importance of personal data security. The implementation process revealed high levels of enthusiasm among students, particularly during the creation of anti-sexual violence digital campaigns, which were later published on the school's social media platforms. This program had a positive impact on students’ ability to recognize, prevent, and respond to digital sexual violence, while also encouraging the formation of a legally conscious student community that can serve as a driving force for digital cultural transformation within the school environment.

This study aims to examine the relationship between healthy food consumption and character development in students. The research is based on the premise that healthy eating plays a vital role not only in physical well-being but also in shaping students' behavior and moral values from an early age. A quantitative descriptive approach was used, employing a theoretical and conceptual analysis design. The findings indicate a strong relationship between healthy eating habits and the development of positive character traits such as discipline, responsibility, and honesty. Based on a regression analysis simulation, healthy food consumption was found to contribute approximately 46% to character formation. These results highlight the importance of integrating healthy eating patterns into character education programs both in schools and at home. The study recommends collaboration among schools, parents, and government bodies to promote healthy eating as a foundation for building strong and positive character in young generations.

Adolescence is an important period in the formation of a person's personality, where individuals tend to be easily influenced by the social environment including associations. Unhealthy associations have the potential to cause various problems such as peer pressure, low self-confidence, and the emergence of deviant behavior. This service activity aims to increase the awareness and understanding of Muhammadiyah 6 Samarinda Junior High School students regarding the importance of applying ethics in society through the provision of classical guidance services. The activity, which carries the theme "Ethics in Society: Fun Friends Are Not Toxic", was held for three days on May 14-16, 2025, with three main sessions lasting 150 minutes every day. The material provided includes the introduction of the concept of social ethics, identification of healthy and unhealthy associations, ethical values in Islam, and ethics of behavior on social media. Through participatory and reflective methods, students are invited to actively discuss, conduct social simulations, and reflect on the values learned. The results of the evaluation showed an increase in student understanding, changes in social attitudes, and openness in communicating with guidance and counseling teachers.

This program was designed to improve the financial literacy of Generation Z, with a specific focus on members of the Maluku Protestant Church Youth Movement (AMGPM) in Poka Village. Initial assessments indicated that most participants had limited financial knowledge, with fewer than 30% understanding basic investment concepts. The initiative employed socialization and simulation methods to educate participants on investment principles, introduce regulated investment applications approved by OJK and BAPPEBTI, and promote secure online investment strategies. Evaluation findings revealed significant progress, with 40% of participants showing improved financial literacy. Additionally, over 75% successfully performed investment steps during simulations, and 85% expressed increased confidence in beginning their investment journey. While the program effectively enhanced participants' understanding, continued training is necessary to ensure long-term impact, particularly in the areas of portfolio diversification and risk management, which are critical for building sustainable and resilient investment practices.

The objective of this study is to examine the simulation of delay time settings on the pelican crossing to minimize vehicle waiting time. The research was conducted through direct observation at two pelican crossing points behind UNAIR Campus B, specifically at the entrance gate side and the opposite side, to capture real usage conditions during peak student hours. This study employs a quantitative approach using the Discrete Event Simulation (DES) method to model and analyze the behavior of the pelican crossing system under various delay time and signal duration scenarios, with the aim of minimizing vehicle waiting time on Dharmawangsa Street,

This study explores the possibility of extraterrestrial life by examining environmental factors that could support survival, such as the availability of liquid water, a balanced atmosphere, and access to energy. The investigative approach was carried out through the integration of various data sources, including telescope observations, spacecraft exploration, and simulation modeling of planetary climate conditions. The findings reveal that a number of exoplanets within the habitable zone have environmental parameters that could potentially support life, although further research is still needed to uncover the biochemical mechanisms and adaptability of life in unusual environments. This study makes an important contribution to the development of astrobiology and expands the opportunities for exploring life beyond our planet, while offering a new understanding of the possibility of life in the vast universe.

Digital transformation in health education opens up innovative opportunities to improve clean and healthy living behavior skills in the adolescent population. This study aims to analyze the effectiveness of education through digital media in improving clean and healthy living behavior skills in guidance studio students in Malaysia. The research method uses a mixed-method approach with a participatory action research design that integrates cooperative learning as the main strategy. The subjects of the study involved 32 students of Sanggar Bimbingan Kampung Pandan Malaysia consisting of 18 male students and 14 female students with an age range of 12-16 years. The intervention was carried out for 12 weeks using the "PHBS Digital Learning" application platform that integrates interactive multimedia features, quizzes, virtual simulations, and group discussion forums. Data collection was carried out through validated pre-test and post-test instruments with a Cronbach's Alpha reliability of 0.847. The results showed a significant increase in the composite knowledge score of 56.0% with a very large effect size (Cohen's d = 4.22), while practical skills increased by an average of 63.2% across all indicators. The digital platform facilitated 847 discussion posts with high engagement levels, reaching an average usage duration of 47.3 minutes per session. The transformation of student attitudes experienced a substantial increase from an average score of 2.3 to 4.2 on a scale of 1-5, with behavioral sustainability maintained by up to 78.1% of students in the follow-up evaluation. This study proves that digital media has high effectiveness in improving clean and healthy living behavior skills through the integration of cooperative learning and digital technology that creates a comprehensive and sustainable learning ecosystem.

Indonesia has great potential in the use of geothermal energy as a source of renewable energy. However, its application at the household scale is still very limited. This study designed a geothermal energy conversion system using a shell and tube type heat exchanger that is optimized for domestic needs. This system uses an isopentane working fluid that has a low boiling point, thus allowing the efficient use of low-thermal heat for water and room heating. The simulation results show that this system has a high heat transfer efficiency, with an output temperature of up to 84°C.  Thus, this system has the potential to become an economical and environmentally friendly renewable energy solution for households.

Education is an important aspect in improving the quality of human resources, especially in higher education in the field of engineering where a deep understanding of technical material is needed. The Electrical Circuit course is often a challenge because there are many abstract concepts that are difficult for students to understand. This study aims to analyze the effect of using PhET Simulation as a technology-based learning media to improve the learning outcomes of Electrical Engineering students in the Electrical Circuit course, as well as evaluating its ability to increase student involvement and become an alternative to limited laboratory experiments. The study used a One-Group Pretest-Posttest design with a sample of 30 students. Data was collected through pretest and posttest, then analyzed using N-Gain test. The results showed that there was a significant increase in the average student score from 59.07 in the pretest to 81.87 in the posttest, with an N-Gain score of 0.55 which was included in the moderate category. This finding proves that PhET Simulation is effective in improving the understanding of Electrical Circuit concepts, as well as increasing student engagement through interactive learning. This simulation also provides flexibility in conducting virtual experiments, so it can be a solution to the limitations of physical laboratories.

The use of Artificial Intelligence (AI) in education offers significant opportunities to transform learning processes, including in Catholic Religious Education (CRE) at the senior high school level. This article aims to identify effective and ethical strategies for integrating AI into CRE instruction by considering Catholic faith values and students’ character development. The study uses a qualitative literature review approach to analyze scholarly sources and current practices of AI application in education. Findings indicate that AI can enhance personalized learning, provide real-time feedback, and create more interactive and context-rich learning experiences. Practical implementations such as adaptive learning systems, chatbots, and AI-based simulations have shown positive impacts on students' comprehension. However, challenges including teacher readiness, technological infrastructure, and ethical concerns must be addressed seriously. Therefore, integrating AI in CRE must be done thoughtfully, responsibly, and in harmony with religious and moral contexts. With careful planning, AI can become a valuable tool to deepen students' faith understanding and support holistic character formation in the digital age.

Tempe artisans in Teluk Betung District, Bandar Lampung City play an important role in providing soybean-based food products. However, the marketing of their products is still conducted conventionally, relying on traditional markets and simple promotional methods, which limits market reach and reduces product competitiveness. This community service activity aims to improve the knowledge and skills of tempe artisans in implementing effective marketing strategies, particularly through digital platforms and product packaging development. The methods used included interactive lectures, group discussions, social media simulations, and practical sessions on designing product labels using simple applications. The workshop results showed that most participants successfully created business social media accounts, designed product labels, and understood the importance of attractive packaging in increasing product value. This activity is expected to serve as a stimulus for developing tempe product marketing in Teluk Betung and surrounding areas.

One of the main challenges faced by prospective educators is the limited understanding and application of Positive Discipline in the educational process, which hampers optimal character development in students. This community service program aims to enhance the capacity of Primary School Teacher Education (PGSD) students at Universitas Terbuka (UT) Jayapura through Smart Education training on the implementation of Positive Discipline as a strategy to build students’ integrity, responsibility, and independence. The activity was conducted using a participatory approach through workshops, interactive discussions, and case study simulations. The results showed an 85% increase in participants’ understanding of Positive Discipline concepts, as well as improved skills in applying such approaches in educational settings. Post-training evaluations also revealed positive changes in participants’ thinking patterns regarding educational communication and the importance of early character education. This program contributes significantly to preparing future teachers who are oriented toward character development and a more humanistic school culture.

Color fastness in Direct to Film (DTF) digital screen printing is influenced by various external factors, one of which is exposure to ultraviolet (UV) light. This study aims to evaluate the impact of UV light on the color stability of DTF prints on two types of fabric, namely 30s cotton and spandex rayon. A quantitative approach was used in this study, involving color difference testing (ΔE), washing simulations, and UV exposure. Based on the analysis results, cotton 30s demonstrated superior color fastness performance compared to spandex rayon, as indicated by lower ΔE values after UV exposure and washing processes. Conversely, spandex rayon experienced more drastic color changes, especially after being washed with bleach detergent. These findings emphasize that the selection of fabric materials and washing methods are critical factors.

MSME actors in Indonesia still face various obstacles in business management, especially in the aspects of marketing and financial bookkeeping. This condition has a direct impact on the low level of bankability of MSMEs to access financing from banking institutions, especially Islamic banks. This activity aims to provide assistance to MSME actors, especially Toko Cipta Swara Elektronik, to be able to prepare basic financial statements and implement simple digital marketing strategies. The method used in this activity is the ABCD (Audience, Behavior, Condition, Degree) approach, with the implementation in the form of lectures, discussions, hands-on practice, and simulations. The results of the activity show that partners are able to prepare two types of basic financial statements (cash flow and profit and loss), design digital marketing strategies through social media, and understand the requirements for applying for Islamic bank financing. This assistance has proven to be effective in increasing the capacity of partners administratively and strategically, as well as opening up greater opportunities to access sharia financing services.

This Community Service was carried out in Kampung Baru,jalan Timor Raya KM 8 Kelurahan Oesao,kecamatan Kupang Timur. Kabupaten Kupang on June 16, 2025 with the aim of increasing public understanding of Financial Technology (FinTech) as part of digital financial literacy. The activity began with a pre-test to identify the community's initial knowledge, continued with the delivery of material through an interactive lecture method, a simulation of the digitalization of the payment system using QRIS, and ended with a post-test and a question and answer session. The material presented included the basic concepts of FinTech, types of digital financial services, digital security, and the benefits and risks of using financial technology. The community showed high enthusiasm, as evidenced by active participation in the discussion and increased understanding based on the results of the post-test evaluation. This PKM activity has a positive impact in raising public awareness and readiness to face the increasingly rapid digital transformation in the financial sector in the future. As a follow-up, the community is expected to be able to learn and utilize FinTech wisely in everyday life, especially in digital transactions and personal financial management.

Vocational high schools (SMK) play an important role in preparing students for the world of work. However, student learning outcomes in the subject of Electrical Lighting Installation at SMK Negeri 5 Kota Padang are still relatively low, with an average pretest score of 57.34. This study aims to test the effectiveness of the Student Teams Achievement Division (STAD) cooperative learning model in improving student learning outcomes. The research method used was classroom action research with 32 students from class XI TITL as subjects. Data were collected through pre-tests, post-tests, and observations of student activities during learning. The results of the study indicate that the implementation of STAD successfully improved student learning outcomes significantly, with an average post-test score of 82.19 and an N-Gain Score of 0.58 (moderate category). Academic achievement also increased from 15.6% to 75%. Further analysis revealed that collaborative interactions within groups, the reward system, and active student participation were key factors contributing to the success of this method. However, challenges such as time management and low student engagement require attention. It is concluded that the STAD model is effective in improving students' learning outcomes in the subject of Electrical Lighting Installation, both in terms of cognitive aspects and social skills. Therefore, it is recommended that teachers implement STAD with proper syntax and consider developing supporting media such as digital simulations to optimize the learning process.

Ground-mounted solar panels are directly exposed to environmental conditions, particularly wind, making structural design essential. While wind tunnel experiments have been a primary research method, they are costly and time-consuming. Computational Fluid Dynamics (CFD) simulations provide an efficient alternative by accurately modeling fluid-structure interactions, allowing for detailed aerodynamic analysis without physical testing. This study examines a solar panel configuration of 2×18 (1700×1200 mm panels) under a wind speed of 30 m/s at a height of 10 m. Wind direction variations (0°, 30°, 60°, 90°, 120°, 150°, 180°) significantly impact aerodynamic behavior. Drag Force analysis reveals that frontal wind (0°) generates the highest drag, while lateral wind (90°) has the least effect. Surface Pressure and Surface Coefficient (Cp) analysis indicate maximum pressure at 0°, where Cp values are highest, highlighting a pronounced pressure differential. At 90°, pressure distribution is more uniform, reducing aerodynamic impact. At 180°, rear-side pressure remains influential but lower than frontal exposure.