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Digital technology opens up great opportunities in the business world, especially online businesses. These opportunities are wide open to many people of various ages and backgrounds, especially young people, considering that their generation has the spirit to try various things, including starting a business. This community service activity aims to provide practical training to vocational high school students on how to start an online business. For two days, they were given an understanding of entrepreneurship, determining potential products, creating accounts on e-commerce, marketing strategies, simulations, and evaluations. This activity is expected to develop economic potential and independence from an early age, and be able to instill an entrepreneurial mindset that is adaptive to the development of the times.

The coastal area of Manado City, particularly the estuary of the Bailang River in Bunaken District, frequently experiences inundation due to the complex interaction between river discharge and tidal fluctuations. This study aims to analyze the spatial distribution and extent of flooding resulting from the combination of river discharge and tides, as well as to evaluate mitigation strategies based on numerical modeling results. A two-dimensional hydrodynamic model was developed using MIKE 21 Flow Model FM HD, utilizing topographic and bathymetric data from DEMNAS and BATNAS, along with 2023 river discharge and tidal data. Simulations were conducted for existing conditions, minimum discharge with maximum tide, and maximum discharge with maximum tide. The results show that tidal influence significantly contributes to the increase in flood extent and duration, especially when high river discharge coincides with peak tidal conditions. The most affected areas are Kelurahan Molas and Tumumpa, located along the riverbanks and near the fish auction port, with inundation covering up to 4.973 hectares and water depths exceeding 0.5 meters. Recommended mitigation strategies include river normalization and the implementation of a real-time hydrodynamic early warning system. This study supports flood risk management and coastal spatial planning, serving as a technical reference for local government policy-making.

This study analyzes the flexural behavior of reinforced geopolymer concrete beams through numerical simulation based on the Finite Element Method (FEM) using ANSYS software, comparing it with conventional reinforced concrete beams. The background of this research focuses on the need for environmentally friendly construction materials, considering the high CO₂ emissions from Portland cement production. The numerical model was developed based on parameters and loading schemes from previous experimental studies, utilizing SOLID65 elements for concrete, LINK180 for steel reinforcement, and SOLID185 for supports. Simulation results show that the flexural behaviour of geopolymer beams is comparable to conventional beams in terms of load-deflection relationships, flexural capacity, and crack patterns, with deviations from experimental data generally below 10%. The patterns and propagation of cracks also exhibited similarities, starting from the tensile zone at mid-span. Furthermore, the analysis demonstrates consistency with the analytical approach based on SNI 2847:2019. This research supports the validity of using geopolymer concrete as a sustainable structural material alternative and shows that the FEM numerical method is effective in evaluating the flexural performance of concrete structural elements.

The low proportion of Grade A harvest quality in Hokkaido corn farming remains a challenge for horticultural agribusiness practitioners. This study aims to develop an operational strategy based on a managerial evaluation of key production factors to improve technical efficiency and harvest quality. The research was conducted at PT Agricole Indonesia Makmur, Cianjur, using data from 24 planting periods in 2024. Six production input variables were analyzed to identify the most influential factors on yield quantity and quality. The results show that only three variables watering frequency, organic fertilizer, and plant age at harvest consistently contributed significantly to the production of Grade A output. Although these variables are inelastic, they play a critical role in maintaining quality. The proposed strategy includes a 10% increase in harvest quantity and a 30% conversion from Grade B to Grade A. Simulation results indicate an additional 7.67 kg of Grade A yield per planting period, generating a value increase of IDR 239,490. The strategy is considered feasible with a positive Return on Investment (ROI) of 14.04% assuming a Grade A selling price of IDR 35,000/kg.

Sewing workers at CV Cahaya Setia Mulia Abadi perform static and repetitive tasks, such as prolonged sitting in a bent posture and continuous sewing movements. These conditions lead to various physical complaints, including back pain (78%), lower neck pain (75%), upper neck discomfort (73%), as well as shoulder fatigue, wrist tingling, and lower back stiffness. This research is conducted to evaluate the potential risk of musculoskeletal disorders (MSDs) through the application of the Rapid Entire Body Assessment (REBA) method, determine the body parts most frequently affected using the Nordic Body Map (NBM) questionnaire, and develop posture correction strategies based on anthropometric measurements.The REBA results indicate that most sewing activities fall into the medium-risk category (score 5–7), with some in the high-risk category (score 8). The intervention involved adjusting chair dimensions based on anthropometry, and adding seat cushions and backrests. After the simulation of improvements, the REBA score decreased to 2, placing it in the low-risk category. These findings demonstrate that ergonomic chair design and proper working posture significantly reduce physical strain, increase comfort, and help maintain worker productivity. This study offers practical recommendations for creating a healthier and safer work environment in the manufacturing sector.

This study explores the lesson planning practices of an English lecturer at Universitas Hafsawaty who teaches English for healthcare students. The findings indicate that the lecturer adopts a contextual and profession-oriented approach, aligning language instruction with medical content and professional communication needs. The lesson plans incorporate materials from health journals, clinical simulations, and academic writing tasks, aiming to enhance both linguistic proficiency and professional relevance. Instructional strategies such as scaffolded learning and multimodal media use are applied to accommodate students’ diverse English proficiency levels. The discussion highlights the integration of English for Specific Purposes (ESP) and Content and Language Integrated Learning (CLIL) frameworks, emphasizing experiential learning and interdisciplinary collaboration. Overall, the study underscores the importance of context-driven lesson planning and the need for institutional support in developing English instruction tailored to professional domains.

A landslide disaster is a life-threatening event that can result in loss of life, environmental damage, and property loss, so it is necessary to have self-evacuation capabilities. Self-evacuation capabilities can be improved with the DEMASI method (Video Animation and Simulation). The aim of this research is to determine the effect of DEMASI (Video Animation and Simulation) on the ability to self-evacuate landslides in class X students at SMA Negeri 1 Dongko. Pre-experimental design research design with a one-group pretest-posttest approach without control. The purposive sampling technique obtained 34 respondents from 170 populations. The research instrument used an observation sheet on self-evacuation capabilities for landslide disasters. Wilcoxon Signed Rank Test statistical test with α 0.05. The results of the research before being given DEMASI intervention (Video Animation and Simulation) were that all (100%) respondents had poor abilities, and after the intervention almost all (85.3%) respondents had good abilities. Results: The statistical analysis showed that the p-value was 0.000 < α 0.05, so there was an influence of DEMASI (Video Animation and Simulation) on students' self-evacuation ability for landslide disasters. The DEMASI method (Video Animation and Simulation) combines two methods that are more interesting, effective, and interactive because audiovisuals recorded by optic and auditory nerves are sent to the occipital lobe and temporal lobe to be described and processed, which involves many brain regions and the frontal lobe so that they can influence the respondent's abilities. The DEMASI method can be used as an educational medium for students and other school residents in an effort to improve their ability to self-evacuate in landslide disasters.

The training on photovoltaic cell implementation at At-Taubah Islamic Boarding School, Tirtamulya, Karawang, aimed to enhance the students’ productivity through mastery of renewable energy technologies. This training was conducted as an empowerment initiative to enable students to independently apply photovoltaic cell technology to meet energy needs within the boarding school environment, while also equipping them with entrepreneurial skills in the renewable energy sector. The training methods included the delivery of basic material on photovoltaic cells, hands-on practice in assembling small-scale solar panels, and simulations of their use for lighting and simple equipment within the school. The results showed an 85% increase in students’ understanding of the working principles of photovoltaic cells, based on pre-test and post-test comparisons, along with improved skills in installing basic solar panel systems. Moreover, the training fostered student interest in developing solar panel installation and maintenance services within the surrounding community. Thus, this program contributed to enhancing the students' productivity and self-reliance while promoting clean energy utilization within the pesantren community.

The advancement of artificial intelligence (AI) technology and social media has significantly influenced the dynamics of societal life, including women. Social media offers a space for the empowerment of women, but at the same time, it also presents various risks such as privacy violations, digital violence, and misuse of personal data. This community service activity aims to strengthen digital literacy among women, particularly in raising awareness of digital risks, protecting digital rights, and promoting safe and responsible social media use. The implementation methods of the activities include outreach in the form of workshops, discussion forums, and case simulations. The results of the activities indicate that there has been an increase in participants' knowledge about privacy in the digital world, forms of gender-based violence in the online realm, and strategies for preventing digital risks. This program is expected to serve as a model for empowering women through the enhancement of digital literacy in responding to the challenges of an increasingly digitalized era.

This community service activity aims to enhance the understanding and capacity of the Village Governments and Village Consultative Bodies (BPD) of Wonreli, Abusur, Lebelau, and Oirata in the process of formulating Village Regulations (Peraturan Desa or Perdes) that are aligned with legal principles and applicable statutory provisions. The socialization was motivated by the generally low level of understanding regarding both the procedures and substance of Perdes formulation, which has led to weak regulatory quality at the village level. The methods employed in this activity included lectures, interactive discussions, and simulations of Perdes drafting, all of which referred to Law Number 12 of 2011 on the Formation of Legislation. The results of the activity indicated a significant increase in legal awareness and participants’ understanding of the importance of legality, participation, and transparency in the village legislative process. This activity also succeeded in encouraging local initiatives to formulate village regulations that are more responsive, accountable, and tailored to the real needs of the local community. Therefore, this socialization made a tangible contribution to strengthening democratic and law-based village governance.

This Community Service Program (PKM) was implemented in response to the high usage of social media among students, particularly Instagram, which often becomes a platform for cyberbullying. This phenomenon becomes increasingly complex when students come from diverse cultural backgrounds. Comments or posts considered normal in one culture may be perceived as offensive in another. A lack of cultural sensitivity often triggers digital conflict and bullying, which can negatively impact students' mental health. This PKM aims to improve students’ understanding of the dangers of cyberbullying and the importance of cross-cultural communication ethics. The program began with a pre-test to assess participants' initial knowledge, followed by an interactive seminar discussing the concepts of cyberbullying, digital ethics, and real-life case studies. Students then engaged in group discussions and simulations, where they analyzed problematic digital content and formulated empathetic, constructive responses. At the end of the activity, a post-test was conducted to evaluate the program’s effectiveness. The results showed a significant improvement in students’ awareness and attitudes. This program successfully encouraged students to be more thoughtful and responsible in their online interactions and to become change agents in creating a safer, more inclusive digital environment. The outcomes of this program include a scholarly publication, an educational video disseminated on social media, and quantitative data showing an increase in participants’ knowledge. Overall, this initiative contributes to strengthening multicultural digital literacy among today’s youth.

This Community Service Program (PKM) was implemented in response to the high usage of social media among students, particularly Instagram, which often becomes a platform for cyberbullying. This phenomenon becomes increasingly complex when students come from diverse cultural backgrounds. Comments or posts considered normal in one culture may be perceived as offensive in another. A lack of cultural sensitivity often triggers digital conflict and bullying, which can negatively impact students' mental health. This PKM aims to improve students’ understanding of the dangers of cyberbullying and the importance of cross-cultural communication ethics. The program began with a pre-test to assess participants' initial knowledge, followed by an interactive seminar discussing the concepts of cyberbullying, digital ethics, and real-life case studies. Students then engaged in group discussions and simulations, where they analyzed problematic digital content and formulated empathetic, constructive responses. At the end of the activity, a post-test was conducted to evaluate the program’s effectiveness. The results showed a significant improvement in students’ awareness and attitudes. This program successfully encouraged students to be more thoughtful and responsible in their online interactions and to become change agents in creating a safer, more inclusive digital environment. The outcomes of this program include a scholarly publication, an educational video disseminated on social media, and quantitative data showing an increase in participants’ knowledge. Overall, this initiative contributes to strengthening multicultural digital literacy among today’s youth.

The continuous operation of airlock machines in wheat milling facilities plays a critical role in the material handling system, especially in the transfer of grain from ships to silo storage. At PT XYZ, the airlock machine has been identified as the equipment with the highest frequency of downtime over a three-month observation period, leading to significant disruptions in production flow and increased corrective maintenance costs. This study aims to analyze the failure modes of the airlock machine using the Failure Mode and Effect Analysis (FMEA) method and to develop preventive maintenance recommendations based on the highest Risk Priority Number (RPN) values. The research adopts a quantitative descriptive approach, involving field observations, interviews with maintenance personnel, historical breakdown analysis, and machine technical documentation review. The FMEA results indicate that the seal, gear, and bearing are the most critical components, with RPN values of 224, 210, and 192, respectively. These components are prioritized for preventive actions such as regular seal replacement, scheduled lubrication, gear inspections, and motor monitoring. Simulation of the proposed maintenance strategy demonstrates a 66.7% reduction in downtime, from 18 hours to 6 hours per month, and a 43.7% reduction in total maintenance costs, from Rp 9,034,500 to Rp 5,087,500 monthly. These results validate the effectiveness of the FMEA method in identifying risk-prone components and optimizing maintenance planning. It is recommended that PT XYZ institutionalize periodic FMEA updates and establish a cross-functional analysis team to continuously monitor and improve equipment reliability.

Object-Oriented Programming (OOP) is a programming paradigm that emphasizes the use of objects and classes to build modular and maintainable software. One of the fundamental concepts in OOP is polymorphism, which is the ability of objects from different classes to respond to the same method in different ways. This study aims to analyze the effectiveness of the polymorphism concept in directing software design in terms of code structure, development utility, and maintenance efficiency. The research method used is a literature study and program code simulation using a procedural approach compared to an object-oriented approach that applies runtime polymorphism. The results of the analysis show that the use of polymorphism can significantly reduce the number of lines of code, logical structure traffic, and facilitate feature expansion without the need to change existing code. Thus, polymorphism has proven effective in improving readability, reusability, and scalability of software design.

The rapid development of information and communication technology demands the education sector to strengthen digital literacy, particularly in mastering computer networks. Observations at SMK Taruna Bakti Baturraden revealed that 10th-grade students face difficulties in understanding basic network concepts such as topology, hardware, IP addresses, and the use of Cisco Packet Tracer. This study aims to measure the effectiveness of interactive teaching methods in improving students' understanding. The activities were carried out through stages including observation, module preparation, delivery of interactive materials, and evaluation. The learning process involved participatory presentations, discussions, and hands-on simulations. Evaluation was conducted using quizzes and student reflections. The results showed a significant increase in students' understanding of networking concepts and enthusiasm in learning network technologies. Furthermore, the activity enhanced students' digital literacy through a practical approach and the use of simulation applications. These findings indicate that interactive teaching methods are effective in improving computer network comprehension and can serve as a replicable digital literacy-based learning model in other vocational schools.

The research with the title Application of Fire and Gas Detection Systems takes place at the North Field Expansion Project (NFXP). The methods used are direct observation, interviews, simulations and literature studies. The objectives of the study were to determine the application of fire and gas detection systems, and  to determine the challenges in the application of fire and gas detection systems in the North Field Expansion Project (NFXP). The results obtained  show that the Fire and Gas Detection System implemented at NFXP is in compliance with international safety standards, and the system is able to detect fire threats and gas leaks with high efficiency through advanced detector technology, automatic response, and integration with other safety systems such as IPS and HVAC. The effectiveness of the system is reflected in the ability to detect threats in less than 5 seconds, with detection coverage that meets the target of 90% by one detector and 85% by two or more detectors. The main challenges in the implementation of fire and gas detection systems include extreme environmental conditions, such as corrosion due to exposure to seawater and high temperatures, and false alarms that reach around 15%. Another obstacle is the lack of technical training for personnel in operating and maintaining the system.

The adoption of PSAK 116 changes the accounting treatment of leases by recognising right-of-use assets and lease liabilities, replacing operating lease expenses with depreciation and interest. These changes have a direct impact on ability-to-pay financial ratios such as Debt Service Coverage Ratio (DSCR) and Net Debt to EBITDA. This study analyses the financial statements of PT Mitra Adiperkasa Tbk (MAPA) for 2019-2024 using a descriptive-comparative and simulation approach in case PSAK 116 is not applied. The results show a technical increase in EBITDA due to PSAK 116, which has an effect on the apparent improvement of DSCR and Net Debt to EBITDA. Simulations using the PSAK 30 approach show more conservative and realistic ratios. These findings highlight the importance of understanding the impact of accounting standards on ratio interpretation and credit decision-making.

Geologically, Indonesia is an archipelagic country that is prone to natural disasters, this is due to Indonesia's geographical location which is surrounded by three earth plates, namely the Eurasian plate, the Indo-Australian plate, and the Pacific plate. As a result of the meeting of the three global plates, Indonesia is located on the path of the fire mountains or what is known as the Ring of Fire which makes Indonesia prone to natural disasters in the form of volcanic eruptions, natural disasters, earthquakes, tsunamis, landslides, floods, droughts, and others. Every region is vulnerable to natural disasters, both those directly influenced by nature and those influenced by humans. Natural disasters can have negative impacts in the form of economic losses, building damage, and loss of life. One effort to anticipate the negative impacts of natural disasters is through disaster mitigation. The purpose of this PKM Activity is to Teach the Community about Community-Based Disaster Management Through the Alert Village in Pagertoyo. Because emergencies can happen anytime and anywhere without exception, the method of implementing the activity consists of the preparation stage by providing socialization, implementation by providing training, assistance and evaluation. The results of the activity showed that most participants understood the material on Community-Based Disaster Management Through the Alert Village. The community is able to demonstrate disaster simulations for evacuating disaster victims and is able to demonstrate resuscitation on victims with respiratory arrest. With this PKM, it is hoped that the community will be able to carry out disaster mitigation to help disaster victims by evacuating victims and can help provide assistance to victims who have experienced respiratory arrest.

Entrepreneurship training is a key strategy for empowering village economies, especially among youth from Karang Taruna and PKK members. In Kaladawa Village, local potential such as agriculture and handicrafts has not been fully utilized due to limited entrepreneurial knowledge and exposure. This program aims to enhance participants' entrepreneurial competencies through practical-based training methods, including interactive lectures, group discussions, and business simulations. A participatory approach was implemented to help participants identify local potentials, develop business ideas, and formulate digital-based marketing strategies. The results of the training indicate a significant improvement in participants’ understanding of entrepreneurship, as reflected in the emergence of innovative business plans focused on local and digital products. Pre- and post-training evaluations showed increased motivation, creativity, and readiness among participants to initiate independent ventures. The training also fostered a sustainable entrepreneurial spirit by covering essential topics such as financial management, digital transformation, and business networking. Participants acknowledged that direct experiences and intensive mentoring during the sessions played a crucial role in building their confidence and competitiveness. However, for long-term success, continuous mentoring and institutional support are required, along with strategic collaboration between stakeholders such as village governments, local MSMEs, and higher education institutions. Thus, this program not only contributes to improving technical and entrepreneurial skills but also plays a pivotal role in developing a self-reliant and sustainable rural entrepreneurial ecosystem. The integration of similar training into broader community empowerment programs is recommended to ensure lasting impact, inclusive access, resilience, innovation, adaptability, creativity, empowerment, collaboration, leadership, and meaningful local economic development.

This Community Service Program (PKM) aims to enhance the leadership capacity and organizational management skills of cadres of the Islamic Student Association (HMI) Dumai Branch through the strengthening of Islamic values and the application of modern organizational management principles. The program was implemented as part of the Intermediate Training (Latihan Kader II/LK 2), which serves as a strategic forum for developing future organizational leaders. The activities were conducted using a combination of lectures, interactive discussions, case-based learning, and leadership simulations designed to encourage critical thinking and active participation. A participatory approach was employed to ensure that participants were directly involved in the learning process and could relate the material to real organizational challenges. The results of the program indicate a significant improvement in participants’ understanding of transformational leadership, collective–collegial leadership, and effective organizational planning and management skills. In addition, the program increased participants’ awareness of the importance of integrating Islamic values as an ethical and moral foundation in student organizational leadership practices. Overall, this PKM contributes to the development of qualified HMI cadres who possess integrity, adaptability, strong leadership competence, and a sustained commitment to community service and organizational development.