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Food safety of fresh fish is an important concern because fish is highly perishable and may be misused with hazardous preservatives such as formalin. This study aimed to determine formalin content and analyze the relationship between length and weight of Nile tilapia (Oreochromis niloticus) and formalin levels in traditional markets of Gorontalo City. The study was conducted from January to February 2026 in five traditional markets, namely TPI Tenda, Moodu, Potanga, Andalas, and Sentral. Nile tilapia samples were analyzed using a formaldehyde test kit, and formalin levels were expressed in ppm. Total length and fish weight were measured, and the relationship between physical size and formalin content was analyzed using Pearson correlation. The results showed that all Nile tilapia samples tested positive for formalin, with concentrations ranging from 0.11 to 0.23 ppm. The highest formalin levels were found in TPI Tenda and Moodu, each at 0.23 ppm, while the lowest level was found in Sentral at 0.11 ppm. Fish length ranged from 19.43 to 25.61 cm, while fish weight ranged from 0.17 to 1.78 g. The correlations between length and formalin content and between weight and formalin content were both very strongly negative, with r = -0.97. These findings indicate that smaller fish tended to contain higher formalin levels. Market supervision, trader education, and formalin-free fish handling practices should be strengthened to protect consumer health.

Rapid developments in digital technology have had a significant impact on students’ lives, particularly in the use of social media and excessive consumption of digital content. The phenomenon known as Brain rot has become a growing concern because it can affect students’ concentration, learning motivation, and quality of thinking. This study aims to provide education regarding the impact of brain rot on students’ concentration and learning motivation in the digital era. The activities were carried out through counseling methods, interactive discussions, and mentoring for junior high school students. The materials presented included the definition of brain rot, the effects of excessive digital media use, the importance of learning time management, and strategies to improve learning focus. The results of the activity showed that students gained a better understanding of the negative impacts of uncontrolled digital media use. In addition, students began to realize the importance of limiting gadget use and increasing productive learning activities. This educational program also helped raise students’ awareness of the importance of maintaining mental health and cognitive abilities amid the rapid development of digital technology. Through this educational activity, students are expected to use technology wisely so that their concentration and learning motivation can improve optimally. Educational programs regarding brain rot need to be carried out continuously as part of strengthening digital literacy within the school environment.

Digital transformation has brought fundamental changes to the structure and dynamics of modern industrial economics. Technologies such as Artificial Intelligence (AI), the Internet of Things (IoT), and big data not only modify production and distribution processes but also revolutionize marketing strategies and patterns of industrial competition. This study is motivated by the need to understand how digital marketing transformation influences the development of competitive advantage through changes in digital market structure from an industrial economics perspective. In this context, digital marketing functions as a strategic instrument that integrates technology, data, and consumer behavior into market mechanisms. The analysis shows that digitalization creates a network-based market structure characterized by the concentration of economic power in major digital platforms and dominance in data control. This structure affects the intensity of competition, the direction of innovation, and patterns of industry differentiation. Digital marketing transformation enhances efficiency, expands market access, and lowers entry barriers for new players, yet it also creates competitive imbalances due to the dominance of large platforms.Through a digital Structure–Conduct–Performance (SCP) approach, the study finds that market structure acts as an intermediary variable that channels the impact of digitalization on competitive advantage. Digitalization significantly promotes industrial efficiency, innovation, and profitability. Proposed strategic solutions include strengthening digital literacy, developing adaptive regulations, and fostering cross-sector collaboration to create an inclusive, competitive, and sustainable digital industrial ecosystem

Anemia in adolescents is a serious health issue that impacts students' concentration and productivity. This community service activity aims to conduct early detection of anemia through a comprehensive manual screening method at three high schools: SMA Sains Alumnika Palembang, SMA Candradimuka, and SMA Mandiri. The implementation method involved three main stages: identification of clinical signs and symptoms (5L), visual observation of the palpebral conjunctiva, and hemoglobin (Hb) level measurement using Point of Care Testing (POCT) devices. Held from April 1st to 8th, 2026, the activity involved the active participation of students and school authorities as an effort toward independent nutritional surveillance. The screening results showed a correlation between subjective symptoms, pale conjunctiva conditions, and Hb measurement results in the field. Changes in students' behavior regarding nutritional intake and the emergence of new awareness among school authorities about the importance of routine check-ups served as indicators of successful social transformation. In conclusion, integrated manual screening is highly effective as a preventive health measure for adolescents within educational environments.

This study examines the implications of the micro-shopping phenomenon and omnichannel integration for market structure and competitive dynamics in Indonesia’s retail sector from an industrial organization perspective. The transformation of modern retail is characterized by a shift toward small-value, high-frequency transactions alongside increasing integration between physical stores and digital channels. Employing a descriptive-analytical approach, this study utilizes secondary data on market shares and the number of retail outlets operated by major firms during the 2022–2024 period. Market structure is assessed through market share distribution, outlet ownership ratios, the four-firm concentration ratio (CR4), and the Herfindahl–Hirschman Index (HHI). The results indicate that Indonesia’s retail market exhibits a highly concentrated, network-based oligopolistic structure. The dominance of large retail firms is reflected not only in their substantial market shares but also in their dense outlet networks, which enable the aggregation of dispersed micro-shopping transactions. Furthermore, omnichannel integration reinforces these structural advantages by enhancing logistical coordination and distribution efficiency. Overall, the findings suggest an increasing tendency toward market consolidation and a declining competitive space for small and traditional retailers, highlighting important implications for competition policy and the long-term sustainability of retail market structure.

Menstrual stress is a common reproductive health problem among adolescent girls, which can interfere with learning activities, concentration, and overall quality of life. This community service activity aimed to improve the ability of female students to manage menstrual stress through education and practice of deep breathing techniques at SMPN 2 Rambutan, Banyuasin Regency. The activity used a one-group pretest–posttest pre-experimental design involving 30 female students who had experienced menstruation. Health education was delivered through interactive lectures, discussions, and practical demonstrations of deep breathing techniques, while evaluation was conducted using pre-test and post-test questionnaires on menstrual stress levels. The results showed a reduction in menstrual stress, with most participants shifting from moderate stress before education to mild stress after the intervention. These findings indicate that deep breathing techniques are effective in helping students independently manage menstrual stress. Therefore, health education combined with practical deep breathing exercises is recommended to be implemented continuously in schools as a promotive and preventive strategy for adolescent reproductive health.

Menstrual stress is a common reproductive health problem among adolescent girls, which can interfere with learning activities, concentration, and overall quality of life. This community service activity aimed to improve the ability of female students to manage menstrual stress through education and practice of deep breathing techniques at SMPN 2 Rambutan, Banyuasin Regency. The activity used a one-group pretest–posttest pre-experimental design involving 30 female students who had experienced menstruation. Health education was delivered through interactive lectures, discussions, and practical demonstrations of deep breathing techniques, while evaluation was conducted using pre-test and post-test questionnaires on menstrual stress levels. The results showed a reduction in menstrual stress, with most participants shifting from moderate stress before education to mild stress after the intervention. These findings indicate that deep breathing techniques are effective in helping students independently manage menstrual stress. Therefore, health education combined with practical deep breathing exercises is recommended to be implemented continuously in schools as a promotive and preventive strategy for adolescent reproductive health.

Modern retail expansion in Situbondo Regency has intensified competitive interaction with traditional markets, making it important to map differences in market structure, firm conduct, and performance outcomes. This study compares (i) market structure using concentration indicators (CR4 and the Herfindahl–Hirschman Index/HHI), (ii) competitive conduct (pricing practices, promotional intensity, service attributes, and relationship patterns), and (iii) performance proxies (sales turnover and selected price efficiency measures) within the SCP framework. The analysis applies a descriptive quantitative approach supported by targeted primary observations and questionnaire-based information, and complemented by official statistics and regulatory documents. Traditional-market samples include Panji, Besuki, and Panarukan markets, while modern-retail samples include local outlets of Indomaret, Alfamart, and Basmalah. Results indicate that traditional markets are relatively unconcentrated (CR4 = 38.0%; HHI = 744), consistent with a competitive structure dominated by many small vendors. Modern retail is more concentrated (CR4 = 77.0%; HHI = 1,644), suggesting moderate concentration and a tendency toward local oligopoly. Average monthly turnover per unit is higher for modern retail (IDR 36.36 million) than for traditional vendors (IDR 15.63 million). Price efficiency varies across commodities: some items show near parity, while several fresh commodities remain cheaper in traditional markets. Policy implications point to balanced local governance: zoning and permitting for modern stores, continuous revitalization of traditional markets, and strengthened MSME partnership schemes to ensure healthy and inclusive competition.

The increasing use of electronic devices, specifically gadgets, among elementary school children has caused various problems, such as addiction, decreased social interaction, health problems, and decreased concentration in learning. These problems involve not only children but also objects and things around them, as well as parents in managing them. Gadget use is not just a matter of quantity that exacerbates this condition. As a solution, the community service team held a socialization focused on improving healthy digital literacy through counseling, interactive discussions, and practical simulations. Results achieved included increased knowledge about the risks of excessive gadget use, increased collective awareness in limiting usage time, and the formation of practical guidelines for healthy gadget use in school and family environments. The results of the activity were documented in the form of a scientific article published in the community service journal as an academic contribution. Overall, the activity has gone according to plan in terms of planning, implementation, and partner involvement. Active participation of participants was evident in the enthusiasm in the discussions and the school's commitment to continuously monitoring gadget use. Thus, this program is expected to have a long-term positive impact in shaping wise behavior in using technology among elementary school children.

The rapid development of digitalization and innovation has become a key driver in improving business processes and the competitiveness of organizations worldwide. This study is the first comprehensive bibliometric analysis examining the relationship between digitalization and innovation in business processes, to map the intellectual structure of this field, track the development of its themes, and identify remaining research gaps. This analysis, which utilizes data from Scopus processed using VOSviewer and Biblioshiny software, covers publications from 2010 to 2024 and employs co-occurrence, co-authorship, and thematic evolution techniques. The results show a rapid growth in publications since 2016, peaking at over 110 publications in 2024. Eight key thematic clusters stand out: Industry 4.0, artificial intelligence, robotic process automation, blockchain, drivers, and agile business process management. Despite the field's maturity, it still suffers from high fragmentation, strong geographic concentration, and a reliance on cross-sectoral research designs. As a result, longitudinal insights remain limited, and digital transformation failure rates remain high, reaching up to 70%. This research presents the first quantitative and visual roadmap of global knowledge flows in this domain and underscores the need for longitudinal, geographically inclusive, and people-centric research to move beyond single-point understandings to a sustainable, context-sensitive framework that enhances both the theoretical depth and practical success of digital-based business process innovation

Population density plays a critical role in shaping public health outcomes and environmental quality, particularly in rapidly urbanizing regions. This study aims to analyze the relationship between high population density and its impacts on sanitation conditions, air quality, access to clean water, and the incidence of various diseases in densely populated areas. The research adopts a qualitative descriptive approach by combining a comprehensive literature review with field observations conducted in several urban areas characterized by high population concentration. The findings reveal that increased population density is closely associated with environmental degradation, including inadequate sanitation systems, reduced air quality due to pollution, and limited availability of clean water. These environmental challenges contribute directly to a higher prevalence of health problems, such as respiratory infections, waterborne diseases, and other communicable illnesses. Overcrowded living conditions also intensify the spread of diseases, placing additional pressure on public health infrastructure. Furthermore, the study highlights that insufficient public facilities and poor environmental management exacerbate the negative effects of population density on both health and the environment. To address these challenges, effective strategies are required, including population growth control, improved urban planning, and enhanced investment in public health and environmental sanitation facilities. Strengthening community awareness and participation in maintaining environmental cleanliness is also essential. Overall, this study emphasizes the need for integrated policies that balance population management with sustainable environmental and public health development.  

This study aims to systematically analyze the influence of Work Family Conflict (WFC) and Work Life Balance (WLB) on employee performance through a Systematic Literature Review (SLR) approach. The increasing demands of work and family roles in modern organizational settings make these variables highly relevant in organizational behavior research. The SLR procedure was conducted based on guidelines by Kitchenham and Wahono, consisting of planning, conducting, and reporting stages. Literature searches were performed across several academic databases, including Google Scholar, Garuda Ristek, ResearchGate, and university journal portals, covering publications from 2020 to 2025. From a total of 5,992 identified articles, 28 studies met all inclusion and quality criteria and were reviewed in depth. The findings indicate that Work Family Conflict consistently exerts a negative effect on employee performance by increasing stress, reducing concentration, and impairing psychological well-being. Conversely, Work Life Balance demonstrates a significant positive influence on performance, as employees who successfully balance their professional and personal responsibilities tend to exhibit higher productivity, job satisfaction, and engagement. Furthermore, factors such as organizational support, flexible working arrangements, and job satisfaction are shown to mediate or moderate the relationship between WFC, WLB, and employee performance. This study contributes by mapping the latest empirical patterns and providing recommendations for organizations to develop supportive work policies that enhance employee well-being and sustainable performance.

Global concern on climate change has encouraged policymakers and central banks to adopt green financial instruments such as green bonds within sustainable monetary frameworks. Research on the integration of green bonds and monetary policy has grown rapidly in recent years, reflecting wider trends in sustainable finance, climate risk management, and central bank policy innovation. Green bonds play an important role in supporting low-carbon transitions and can influence monetary operations through asset purchases and collateral policies. This study applies a bibliometric analysis of publications on green bonds and monetary policy indexed in Scopus from 2021 to 2025. Using bibliometric methods with VOSviewer and R Studio, the analysis maps dominant themes, co-authorship networks, and the evolution of green monetary studies. The results show strong growth in research output, high levels of international collaboration, and a concentration on sustainable development and green finance. However, fewer studies address climate policy uncertainty and geopolitical risk, even though these factors are highly relevant to financial stability and the effectiveness of monetary policy. Future research in these underexplored areas could provide stronger scientific foundations for building more adaptive and resilient monetary systems in both developed and emerging economies.

This research focused on improving fine motor development in early childhood through creative learning activities that utilize recycled materials, designed and implemented using the ADDIE instructional model. The study involved children from class B2 at TK Prawidya Darma and was conducted systematically through five stages, namely analysis, design, development, implementation, and evaluation. Throughout the learning process, children were engaged in a variety of hands-on craft activities, including cutting, folding, gluing, and assembling recycled objects, which were intentionally structured to train hand–eye coordination, finger flexibility, and concentration. The results demonstrate that learning activities based on recycled materials offer rich and meaningful experiences for young learners. Children showed noticeable improvements in accuracy, independence, and creative expression while completing tasks. In addition, the use of recycled materials helped cultivate environmental awareness from an early age, as children learned the value of reusing everyday objects. The classroom atmosphere became more interactive and enjoyable, with students actively participating and showing enthusiasm during the activities. Overall, the findings indicate that creative recycling-based activities are effective in supporting fine motor skill development through enjoyable, practical, and environmentally friendly learning experiences. This study concludes that integrating recycled materials into creative activities can be an innovative, sustainable, and pedagogically valuable approach for early childhood education programs.

This community service activity aims to increase the learning concentration of SD Negeri Pojok Kediri students through educational training with five simple and fun methods, namely focus games, Pomodoro Kids techniques, light physical activity, mindfulness exercises, and relaxation. The main problem faced by schools is the low level of focus of students during learning, especially when the material requires high concentration and sustained attention duration. The method of the activity includes initial observation to identify classroom conditions, teacher training related to the application of methods, direct application in the classroom, and periodic mentoring and evaluation. The results showed a significant improvement in students' focus skills, which was characterized by increased attention duration, faster response to instructions, and more active student involvement in the learning process. Teachers also reported that the classroom atmosphere became more conducive, orderly, and interactive after the methods were applied consistently. In addition, positive behavioral changes such as self-regulation skills, better emotion management, and more regular learning habits appear. Thus, this training has proven to be effective, easy to implement, and has the potential to be used as a sustainable strategy to improve the quality of the teaching and learning process in elementary schools.

This study focuses on mentoring activities for male and female students of Madrasah Ibtidaiyah Khalafiyah Syafi’iyyah Zainul Hasan Genggong related to children’s development during the school period. The main issue identified is the lack of optimal learning motivation and independence among students, which affects their academic achievement and character formation. The purpose of this study is to improve students’ observation skills, creativity, critical thinking, emotional regulation, social interaction, and learning motivation in an integrated manner. This research employed a descriptive qualitative method with observation, interviews, and in-depth documentation as the primary data collection techniques. The findings indicate a significant improvement in students’ concentration, creative expression through drawing, logical thinking, emotional stability, harmonious social interaction, as well as motivation and discipline in learning. The mentoring activities provide a sustainable positive impact on students’ psychological growth and holistic development within the madrasah environment

This study focuses on mentoring activities for male and female students of Madrasah Ibtidaiyah Khalafiyah Syafi’iyyah Zainul Hasan Genggong related to children’s development during the school period. The main issue identified is the lack of optimal learning motivation and independence among students, which affects their academic achievement and character formation. The purpose of this study is to improve students’ observation skills, creativity, critical thinking, emotional regulation, social interaction, and learning motivation in an integrated manner. This research employed a descriptive qualitative method with observation, interviews, and in-depth documentation as the primary data collection techniques. The findings indicate a significant improvement in students’ concentration, creative expression through drawing, logical thinking, emotional stability, harmonious social interaction, as well as motivation and discipline in learning. The mentoring activities provide a sustainable positive impact on students’ psychological growth and holistic development within the madrasah environment

In the context of the influence of social media on the learning concentration of Students in the learning concentration if students in the J-PBSI (Indonesia Language and Literature Education Department) at Lambung Mangkurat University, social media is one of the most influential technological products in the lives of students today. Students in J-PBSI at Lambung Mangkurat University are increasingly dependent on various digital platfroms to support their educational processes. Theses applicantions have become essential tools for socializing and sharing information with other students. The influence of social media use on the learning concentration of J-PBSI students shows that many students experience a lack of focus while studying due to the distracting effects of social media. This distraction often reduces students’ ability to contcentrate, which in turn affects their overall to concentrate, which in turn affects their overall learning performance. This study uses a descriptive qualitative method with in-depth interviem techniques conducted with several students from the Indonesia Language and Literature Education Department. The results of the most students use sosial media on a daily basis. High usage of social media tends to decrease learning concentration because students are often distracted by notifications of the urge to open social media while studying. However, there are also J-PBSI students who use social media effectively, utilizing it as an additional learning resource. Thus, the influence of social media is twofold, depending on the intensity and purpose of ir use. This study aims to determine the extent to which social media affects students’ learning concentration. It is also expected to provide a better understanding of how social media influences the learning process. Students are encouraged to use social media wisely and responsibly so that is does not interfere with their focus on studying, but instead supports their academic activities.

The purpose of this study is to evaluate income inequality and poverty as key indicators of uneven economic development in North Sumatra Province in 2024. This study analyzed various secondary sources, including BPS reports, SINTA-indexed national journals, and regional economic policy publications. The results show that regencies in the west coast and mountainous regions of North Sumatra tend to be lagging behind, while urban areas such as Medan and Deli Serdang have the highest concentration of economic growth, meaning that income inequality remains at a moderate-high level. The finding that economic progress remains uneven is reinforced by the fact that the poverty rate remains higher than the national average. From the results of this study, not only economic factors influence inequality and poverty, but also structural factors such as infrastructure access, human labor quality, and regional fiscal inequality. Therefore, more inclusive and integrated policies are needed to address inequality and improve welfare across all provinces.

This community service activity was carried out to increase students' understanding of the dangers of drug abuse and its impact on academic achievement and the future of the younger generation at SMK Negeri 1 Pagelaran. The problem of low student awareness and limited access to accurate information about drugs was the main background for this activity. The community service program was designed using interactive socialization and education methods that included direct counseling, educational video screenings, group discussions, and the provision of supporting media in the form of leaflets as a means of reinforcing the material. The results of the activity showed an increase in students' knowledge and understanding regarding the risks of drug abuse, particularly its impact on decreased learning concentration, physical and mental health disorders, and weakened motivation and academic achievement. In addition, students showed high enthusiasm during the activity and were able to identify internal and external factors that can encourage and prevent involvement in drug abuse. This activity made a positive contribution to the school as a preventive effort and became the basis for the development of a sustainable and more comprehensive drug prevention program.