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This study aims to analyze the relationship between caffeine consumption and sleep duration on VO₂Max levels among soccer school (SSB) students in Surabaya. VO₂Max is a key indicator of cardiorespiratory fitness and athletic performance. This research employed a quantitative cross-sectional design with an analytical observational approach. A total of 162 SSB students were included as research participants from several soccer schools in Surabaya. Data were collected using the Food Frequency Questionnaire (FFQ) to assess caffeine intake and the Pittsburgh Sleep Quality Index (PSQI) to evaluate sleep duration, and were analyzed using the Chi-Square test. The results revealed a significant relationship between caffeine consumption and sleep duration with VO₂Max (p<0.001). Students with higher caffeine consumption (≥3.5) and adequate sleep duration (≥7 hours) tended to have better VO₂Max values compared to those with lower caffeine intake and insufficient sleep. These findings indicate that appropriate caffeine consumption and adequate sleep duration play an important role in improving cardiorespiratory fitness. Therefore, proper education on healthy lifestyle habits is essential to optimize the performance of young athletes.

Fiqh learning education activities play an important role in improving early childhood worship awareness, particularly in understanding the pillars of Islam as the foundation of Islamic teachings. This study was motivated by the low level of children’s understanding of the pillars of Islam, which was caused by learning methods that were less engaging and less interactive. Therefore, this study aims to improve the understanding, habituation, and worship awareness of early childhood through the use of a simple, communicative, and easy-to-understand lecture method at TPQ Al-Hidayah, Pacar Kembang, Surabaya. This study employed a Participatory Action Research (PAR) approach consisting of several stages, namely problem identification, learning planning using the lecture method, implementation of activities, evaluation, and joint reflection to enhance learning effectiveness. The results showed that fiqh learning through the lecture method had a positive impact on improving children’s understanding of the pillars of Islam, developing worship habits, and fostering full awareness in carrying out daily worship practices. Thus, the lecture method is considered effective in enhancing understanding and worship awareness among early childhood learners.

This study aims to analyze the integration of policy, curriculum, and school culture in realizing an environmentally friendly school at SDN Tanggul Wetan 2. The study used a qualitative approach with a case study type. The research subjects included the principal, teachers, students, program coordinators, and parents. Data collection techniques were carried out through observation, in-depth interviews, and documentation. Data analysis used the Miles and Huberman model which includes data reduction, data presentation, and drawing conclusions. The results showed that the school policy has integrated environmental care values ​​through the Adiwiyata program supported by external partnerships and periodic evaluations. The curriculum implementation was carried out contextually by integrating environmental materials into various subjects and using project-based learning methods. School culture is realized through habituation of activities such as community service, waste sorting, and energy saving which have an impact on changes in student behavior. Supporting factors include the principal's leadership, teacher participation, parental support, and the school environment, while inhibiting factors include the lack of consistent student habits. Thus, the integration of policy, curriculum, and school culture has proven to be key in building a sustainable environmentally friendly character.

Learning fiqh is a very important thing to learn because fiqh regulates all the laws of Allah related to human work where the laws are taken from the Qur'an and Sunnah by means of ijtihad. However, in the field there are still many students who do not understand how to perform tayammum taharah correctly. This happens due to lack of understanding and insufficient habits. Thus, this PKM activity aims to educate students related to taharah so that students not only understand theory, but can apply it in daily life according to Islamic law. The method used is Asset Based Community Development (ABCD) with the stages of discovery, dream, design, define, and destiny. To optimize local potentials such as the competence of ustazah and TPQ facilities, through lectures, demonstrations, discussions, hands-on practice, and evaluation based on interactive quizzes. The results of the tayammum mentoring activities show that TPQ Darul Falah students are very active and interactive during learning. Students who initially did not understand the procedures of tayammum properly and perfunctorially, are now able to do it according to Islamic law. In addition, this training activity provides direct understanding and experience to ustazah and students of TPQ Darul Falah in learning tayamum practice.

This community service program aims to improve the Islamic character and morals of adolescents through religious development activities based on active community participation. This program is implemented using an Asset-Based Community Development (ABCD) approach that emphasizes the utilization of local assets and potential, such as support from religious leaders, mosque facilities, and youth enthusiasm. The implementation method includes observation, participatory planning, implementation of development activities such as prayers, religious sermons, and worship habits, as well as joint evaluation. The results of the activities show an increase in adolescent participation in religious activities, changes in behavior towards a more positive direction, and increased spiritual and social awareness. In addition, this activity has an impact on strengthening community solidarity and creating a more religious and harmonious environment. Thus, the ABCD approach is effective in optimizing local potential to support the development of Islamic character in adolescents in a sustainable manner.

This community service program aims to improve the Islamic character and morals of adolescents through religious development activities based on active community participation. This program is implemented using an Asset-Based Community Development (ABCD) approach that emphasizes the utilization of local assets and potential, such as support from religious leaders, mosque facilities, and youth enthusiasm. The implementation method includes observation, participatory planning, implementation of development activities such as prayers, religious sermons, and worship habits, as well as joint evaluation. The results of the activities show an increase in adolescent participation in religious activities, changes in behavior towards a more positive direction, and increased spiritual and social awareness. In addition, this activity has an impact on strengthening community solidarity and creating a more religious and harmonious environment. Thus, the ABCD approach is effective in optimizing local potential to support the development of Islamic character in adolescents in a sustainable manner.

This community service activity aims to improve participants' understanding of time management in building focus and self-discipline, particularly during the holy month of Ramadan, which is synonymous with various religious and social activities. The activity took place online on March 8, 2026, via Google Meet, with 15 participants, including students and the general public. The activity involved an educational webinar discussing the basic concepts of time management, strategies for managing activities during Ramadan, and the importance of developing disciplined habits in carrying out daily activities. The service method used in this activity was the Asset-Based Community Development (ABCD) approach, emphasizing the utilization of participants' potential and abilities to develop effective time management skills. The activity began with preparation, including creating a webinar flyer, preparing presentation materials using Canva, and scheduling activities through Google Meet. The results showed that participants gained a better understanding of the importance of time management in improving study focus, self-discipline, and productivity during Ramadan. Through this activity, participants are expected to be able to consistently implement time management principles in their daily lives, thereby improving their quality of life both academically and spiritually.

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.

Industrial dust exposure is a hazardous work environment that can potentially cause respiratory problems in workers, particularly in industrial sectors with production activities that generate high levels of dust particles. This study aims to examine the relationship between industrial dust exposure and respiratory problems in workers through a systematic review. The method used was a qualitative descriptive literature study of scientific articles from 2021-2026 obtained through Google Scholar based on inclusion and exclusion criteria, then systematically analyzed. The results of the study indicate that most studies found a significant relationship between dust exposure and respiratory problems, especially in work environments with dust levels exceeding the threshold limit (TLV). Common symptoms include coughing, shortness of breath, phlegm production, and decreased lung function. In addition to dust levels, other factors such as duration of exposure, length of service, smoking habits, and the use of personal protective equipment (PPE) also play a role in increasing the risk. However, several studies showed insignificant results, which are suspected to be influenced by the use of proper PPE and an effective work environment control system. These findings confirm that dust exposure is a significant, multifactorial risk factor, necessitating comprehensive control efforts through a hierarchy of controls, environmental monitoring, and regular health checks to prevent long-term impacts on worker health.

Ngabuburit has grown into a cultural tradition that is deeply embedded in Indonesian society during Ramadan, including among the student demographic. This study investigates the relevance of the ngabuburit tradition to the level of consumer economic literacy and the application of Islamic consumption ethics among university students in the city of Bandung. Employing a quantitative descriptive approach, data were gathered through an online questionnaire distributed to students from various universities across Bandung. The analysis aims to determine whether the pre-iftar waiting activity stimulates impulsive purchasing behavior more strongly than awareness of Islamic consumption principles particularly the avoidance of wasteful spending (tabzir) and extravagance (israf). The study also examines several factors shaping students' consumption patterns, including social environment, lifestyle tendencies, and access to food and beverage products throughout Ramadan. The results are expected to shed light on how students behave as consumers within a local cultural framework and to what degree their economic literacy can moderate consumption behaviors that contradict Islamic principles, while providing an evaluative foundation for cultivating more prudent consumption habits.

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.

Low financial literacy among students, particularly in Islamic boarding schools, poses a challenge in fostering early economic independence. At Pondok Pesantren NW Montong Lisung, students generally lack the ability to manage pocket money, maintain financial records, and develop saving habits. This condition underlies the implementation of a community service program aimed at building smart financial habits through financial management education. The method employed a participatory approach consisting of counseling, training, and mentoring stages. Evaluation was conducted using pre-test and post-test, observation, and assessment of students’ financial record practices. The results showed a significant improvement in students’ financial literacy, increasing from an average of 42.5% to 79.5%, along with positive behavioral changes such as increased saving habits and better expense control. These findings indicate that financial management education is effective in improving students’ financial understanding and skills. Therefore, this program is important to be implemented sustainably to support the development of students’ economic independence in the future.

This community service activity aims to instill religious values in the students at TPQ Miftakhul Huda by establishing the habit of praying before and after wudu, as an effort to transform worship practices from mere physical routines into profound spiritual experiences. Using the Asset-Based Community Development (ABCD) approach, this program is carried out through five main stages: discovery, dream, design, define, and do. The results of the activity indicate that through intensive demonstration and practical guidance, the students experienced significant improvement in discipline, awareness of maintaining purity, and moral responsibility as manifestations of Muslim character from an early age. Integrating prayer into the wudu practice has proven effective as an educational tool in building the foundation of faith from an early age, or the “golden age.” The synergy between the student team, educators, and the utilization of institutional facilities proved effective in establishing operational standards for character education that comprehensively integrate physical, mental, and theological aspects. Thus, the practice of wudu prayer serves as a strategic educational tool in strengthening children’s foundational faith during the golden age amidst the challenges of shifting global values.

KIP Kuliah is a government-funded educational assistance program aimed at high school (SMA) graduates or equivalent who demonstrate strong academic potential but face economic constraints. This program is expected to expand access to higher education and help students complete their studies on time without being burdened by financial concerns. However, the effectiveness of KIP Kuliah utilization depends not only on the amount of aid provided but also on students’ ability to manage their finances wisely through the implementation of good money habits This study is a field research using a descriptive qualitative approach. The sample consists of six informants, namely KIP Kuliah recipients at Politeknik Negeri Medan from the 2020–2023 cohorts. The results show that personal financial management among students includes budgeting, controlling expenses, and saving behavior. In addition, several factors influence students’ financial behavior, such as financial literacy, social environment, lifestyle, and individual needs. With proper financial management, KIP Kuliah funds can be utilized optimally to support students’ academic success.

The routine prayer recitation activity with teenagers in Jatikalang Village, Krian, Sidoarjo, essentially arose from the need for moral development among teenagers amidst today's increasingly complex and externally influenced lives. Through this activity, it is hoped that teenagers can become closer to religious values ​​without feeling patronized, as the activities are simple and relevant to their daily lives. Furthermore, a sense of community among teenagers is fostered, becoming more than just a form of worship but also a positive gathering space. The implementation itself uses an Asset-Based Community Development (ABCD) approach, emphasizing existing community potential, such as the role of administrators, youth involvement, and available village facilities. The activity is relatively simple, starting with an opening and reciting prayers, rowi Diba' (the prayer of the Prophet), mahalul qiyam (the prayer of the Prophet), and closing with a short sermon (kultum) usually containing light but impactful messages. These activities are beginning to show changes: teenagers are becoming more active, a sense of togetherness is growing, and good habits such as discipline, mutual respect, and responsibility are gradually emerging. Furthermore, this activity serves as an alternative to prevent teenagers from getting caught up in less beneficial activities. There are still challenges, particularly with fluctuating attendance and the strong influence of the external environment. However, if maintained and developed consistently, this activity has great potential to become a platform for social and spiritual development for youth. Overall, this sholawat routine is quite effective in developing religious character and strengthening social ties within the community.

This Community Service (PKM) activity aims to improve the memorization skills of students through a program to familiarize them with memorizing daily prayers at the Syubbanul Qur'an Islamic Boarding School (TPQ) in Jambangan, Surabaya. The background to this activity is based on the low ability to memorize daily prayers of students and the lack of habituation in daily life due to limited mentoring in the family environment. The method used in this activity is the Asset Based Community Development (ABCD) approach which emphasizes the utilization of potential and assets owned by the community. The stages of the activity include discovery, dream, design, and destiny which are carried out systematically and participatory. Data collection techniques are carried out through observation and interviews to determine the development of students' memorization skills and the effectiveness of the program. The results of the activity show an increase in the ability to memorize daily prayers, marked by an increase in the number of memorizations, fluency in pronunciation, and increased self-confidence of students. In addition, this program also has an impact on the formation of religious character, discipline, and positive habits in daily life. The program's success was supported by the active involvement of the ustadz/ustadzah (Islamic teacher) and parents, as well as a conducive learning environment. Despite several obstacles, such as differences in student abilities and time constraints, the program remained effective. Thus, the habit of memorizing daily prayers has proven to be an effective strategy for improving memorization skills and sustainably shaping the students' religious character.

MSMEs play a dominant role in the Indonesian economy, but their contribution to the international market remains relatively limited. This situation indicates that the readiness for internationalisation of MSMEs remains a significant issue, particularly in relation to innovation and digitalisation capabilities as strategic resources. This study aims to analyse the influence of innovation and digitalisation on the readiness for internationalisation of MSMEs in Indonesia using the Resource-Based View approach. The study employs an explanatory quantitative design with a survey approach involving 200 owners or primary managers of SMEs in East Java, selected via purposive sampling. Data were analysed using SEM-PLS. The results indicate that innovation and digitalisation have a positive and significant influence on the internationalisation readiness of SMEs. Digitalisation demonstrates a stronger influence than innovation. The structural model also exhibits adequate explanatory and predictive power. These findings confirm that internationalisation readiness is determined not only by market opportunities but also by the ability of SMEs to strategically manage innovation and digital technology. The implications of this study emphasise the importance of strengthening innovation and digitalisation capabilities as the foundation for formulating SME development strategies that are better prepared to enter international markets.

The purpose of this community service program is to enhance the capacity and independence of Micro, Small, and Medium Enterprises (MSMEs) by providing improved training in business management. The program covers the use of digital technology in the agricultural sector, the implementation of occupational safety and health practices, intellectual property protection, and simple financial record-keeping practices. In Pugeran Village, the activities were carried out using a collaborative approach involving the village government, MSME actors, and university students participating in the Community Service Program (Kuliah Kerja Nyata). A qualitative descriptive approach was employed through observation, interviews, and focus group discussions, complemented by direct mentoring and counseling sessions. The results indicate that MSME actors have begun to understand the importance of maintaining simple financial records, utilizing digital technology to market their products, and becoming more aware of workplace safety as well as legal protection for their businesses. The program also encouraged MSME actors to shift their perspectives and manage their enterprises in a more professional manner. However, the speed of implementation varied depending on differences in age, educational background, and established business habits. Overall, this community service activity contributed to strengthening the capacity of MSMEs and supporting sustainable economic growth in the village

The routine prayer recitation activity with teenagers in Jatikalang Village, Krian, Sidoarjo, essentially arose from the need for moral development among teenagers amidst today's increasingly complex and externally influenced lives. Through this activity, it is hoped that teenagers can become closer to religious values ​​without feeling patronized, as the activities are simple and relevant to their daily lives. Furthermore, a sense of community among teenagers is fostered, becoming more than just a form of worship but also a positive gathering space. The implementation itself uses an Asset-Based Community Development (ABCD) approach, emphasizing existing community potential, such as the role of administrators, youth involvement, and available village facilities. The activity is relatively simple, starting with an opening and reciting prayers, rowi Diba' (the prayer of the Prophet), mahalul qiyam (the prayer of the Prophet), and closing with a short sermon (kultum) usually containing light but impactful messages. These activities are beginning to show changes: teenagers are becoming more active, a sense of togetherness is growing, and good habits such as discipline, mutual respect, and responsibility are gradually emerging. Furthermore, this activity serves as an alternative to prevent teenagers from getting caught up in less beneficial activities. There are still challenges, particularly with fluctuating attendance and the strong influence of the external environment. However, if maintained and developed consistently, this activity has great potential to become a platform for social and spiritual development for youth. Overall, this sholawat routine is quite effective in developing religious character and strengthening social ties within the community.

The implementation of Clean and Healthy Living Behavior (PHBS) begins at an early age, particularly among school children, who learn extensively from their surrounding environment through the School Health Program (UKS). Although the family is the primary unit in shaping PHBS habits, parents’ busy schedules often lead children to interact more with teachers and peers at school. This study aims to determine the effectiveness of the UKS program on students’ PHBS at SD Lambaro Angan, Darussalam District, Aceh Besar Regency in 2024. This research employed a cross-sectional design with a population of 321 students and a sample of 76 respondents. Data collection was conducted on March 4, 2024. The results indicate that the UKS program has a significant effect on students’ PHBS, including habits such as washing hands with running water and soap, purchasing healthy snacks at the school canteen, disposing of waste properly, participating in physical exercise, not smoking at school, eliminating mosquito larvae, and using school sanitation facilities (p < 0.05). However, no significant effect was found on activities such as weighing body weight and measuring height. In conclusion, the UKS program is effective in improving students’ PHBS. These findings are expected to provide input for schools to optimize the implementation of UKS and enhance PHBS promotion so that students can apply clean and healthy living behaviors in their daily lives.