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The rapid expansion of the digital economy has significantly accelerated the growth of technology startups while simultaneously increasing market concentration among dominant digital platforms. This condition has intensified the implementation of anti-monopoly policies as a regulatory instrument to maintain fair competition. Amid the ongoing global economic crisis extending into 2025, debates have emerged regarding whether anti-monopoly policies foster or hinder innovation among technology startups. This study aims to examine the impact of anti-monopoly policies on technology startup innovation within the context of the global economic crisis. The research adopts a qualitative approach using a narrative literature review and policy analysis. The data are derived from academic journal articles, scholarly books, and official reports issued by international organizations and competition authorities published within the last five years. The analysis is conducted through a descriptive-analytical method by synthesizing key findings related to anti-monopoly policy, technological innovation, digital market dynamics, and global economic conditions. The findings indicate that anti-monopoly policies can create a more equitable competitive environment for technology startups by limiting market dominance and abusive practices by large firms. However, during periods of global economic crisis, the effectiveness of such policies largely depends on regulatory design, consistency of enforcement, and the state’s capacity to balance competition protection with innovation incentives. Overly restrictive policies may suppress investment and startup growth, whereas adaptive and market-responsive regulations can enhance the resilience of technology startup innovation. This study contributes theoretical and policy insights for developing competition law frameworks that are more responsive to the challenges of the digital economy and global economic uncertainty.

The global energy crisis and climate change are driving the development of biodiesel as a renewable energy source. Graphite as an additive shows significant potential in improving the efficiency and reducing emissions of biodiesel. This study maps graphite-biodiesel research in Southeast Asia using a meta analysis of systematic reviews of 68 publications from Scopus, Web of Science, and ScienceDirect from 2015-2024. The results show that Malaysia leads in publication contributions (32%), followed by Thailand (28%) and Indonesia (18%). The optimal graphite concentration of 50 ppm increases brake thermal efficiency by 8.3% and reduces CO (15.7%), HC (12.4%), and smoke (18.9%) emissions, although there is an increase in NOx (6.8%). Palm oil methyl ester dominated the research (56%). Indonesia has strategic opportunities with abundant feedstock and graphite deposits, but faces challenges in research infrastructure, limited international collaboration, and the absence of an integrated national roadmap. Infrastructure investment, human resource strengthening, and industry academia collaboration are needed to accelerate national biodiesel research.

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.

In this study, a device was designed and implemented to control the water pH and nutrient density (concentration) in a hydroponic system using the Mamdani method of fuzzy logic, thus maintaining nutrient solution parameters within an optimal range for plant growth. This system relies on three input values ​​obtained from a water pH sensor, a nutrient TDS sensor, and a flow meter. These three sensors are used to control four peristaltic motors, each of which functions to increase and decrease the pH and nutrient levels in the solution. The speed of the peristaltic pump motor, when the water pH is set at 6.5 and the nutrient concentration is set at 700 ppm, is influenced by the difference between the sensor reading and the set point. The greater the difference, the higher the peristaltic pump motor speed. Conversely, the smaller the difference between the sensor reading and the set point, the lower the peristaltic pump motor speed. Furthermore, the amount of water flowing through the pipe also influences the peristaltic pump motor speed.

The advancement of information technology has increased young children’s exposure to digital devices, which potentially affects language development. This study aims to analyze the relationship between daily screen time duration and language development of children aged 5–6 years in Desa Mendalo Indah, Kecamatan Jambi Luar Kota, Kabupaten Muaro Jambi. This research employed a descriptive qualitative approach with a case study design. The subjects were six children aged 5–6 years who had more than two hours of daily screen time. Data were collected through observations of children’s language abilities, interviews with parents, and documentation of daily activities, and analyzed using Miles and Huberman’s (2014) interactive model, including data reduction, data display, and conclusion drawing. The results showed variations in children’s language abilities despite having relatively similar screen time durations. Children who received active parental guidance and accessed educational content demonstrated better receptive and expressive language skills, including following sequential instructions, forming simple sentences, and expressing ideas verbally. Conversely, children who used screen time passively without supervision tended to have limitations in vocabulary acquisition, concentration, and verbal interaction. These findings indicate that screen time duration alone is not the sole determinant of children’s language development; it is also influenced by the quality of parental guidance, the type of content accessed, and social interaction experiences. This study is expected to provide guidance for parents, teachers, and early childhood education practitioners in managing digital media use wisely to optimally support children’s language development.

Reading ability is a basic skill that plays a crucial role in the success of students' learning process. However, various studies indicate that the reading ability of junior high school students remains low. This study aims to analyze the reading ability of students at the UPT SMP Negeri 2 Mappakasunggu using Alfred Schutz's social phenomenology perspective. The research approach used was qualitative with descriptive methods. Data collection techniques included in-depth interviews, observation, and documentation of students and teachers. The results indicate that students' low reading ability is not solely caused by cognitive factors but is also influenced by subjective meanings formed through students' social experiences. The lack of a literacy culture in the family and school environment results in reading not being perceived as an important or enjoyable activity. Furthermore, the dominant use of gadgets for entertainment creates habits that reduce students' interest and concentration in reading texts. From Alfred Schutz's social phenomenology perspective, these conditions are related to students' lifeworlds and stock of knowledge, which shape their perspectives and actions toward reading. This study concludes that improving students' reading ability requires a comprehensive approach, taking into account experiences, social interactions, and the formation of meaning in reading in students' daily lives.

Acne (Acne vulgaris) is one of the most common skin problems, affecting 80–85% of adolescents aged 15–18 years, with some cases persisting into adulthood. One of the associated bacteria is Staphylococcus epidermidis, a normal skin flora that can become an opportunistic pathogen. Bay leaves (Syzygium polyanthum) are known to contain secondary metabolites such as alkaloids, flavonoids, tannins, saponins, and essential oils with antibacterial activity. This study aimed to formulate ethanol extract of bay leaves into ointments with concentrations of 10%, 20%, and 30%, test their antibacterial activity against Staphylococcus epidermidis using the disc diffusion method, and evaluate their physical quality (organoleptic properties, homogeneity, pH, adhesion, and spreadability). Results showed that the ethanol extract of bay leaves contained alkaloids, flavonoids, saponins, and tannins. The ointments met topical quality standards with pH 5.8–6.9, adhesion time 36–41 seconds, and spreadability 6.9–8.1 cm. Antibacterial activity increased with higher concentrations: 7.8 mm (10%), 12 mm (20%), and 15 mm (30%), although still lower than the positive control (clindamycin, 34 mm). In conclusion, ethanol extract of bay leaves has potential as an active ingredient in topical anti-acne ointments, but further studies with higher concentrations, in vivo testing, and optimized formulations are needed to achieve efficacy comparable to synthetic antibiotics.  

Arabica coffee (Coffea arabica) contains various bioactive compounds such as caffeine, polyphenols, flavonoids, and alkaloids that have the potential to produce diverse pharmacological effects on both the autonomic and central nervous systems. The variation in its chemical composition is influenced by factors such as cultivar, post-harvest processing, and preparation methods, resulting in biological responses that are dose-dependent and not always linear. This study aimed to evaluate the pharmacological activity of arabica coffee simplicia powder at three concentrations (1%, 2%, and 4%) by observing parasympathomimetic, parasympatholytic, sympathomimetic, sympatholytic, analeptic, central nervous system stimulation and depression, as well as muscle relaxation parameters. The research was conducted using a laboratory experimental design with test animals administered orally according to the designated concentrations. The results showed that some parameters increased at higher concentrations, such as parasympathomimetic activity (51.85%) and central nervous system stimulation (63.74%), while other parameters demonstrated decreasing or biphasic patterns, such as sympatholytic activity, which was high at 1% and 4% but low at 2%, and analeptic activity, which dropped sharply at 2% and increased again at 4%. These response patterns align with literature indicating that caffeine and polyphenols such as chlorogenic acid may interact synergistically or antagonistically, generating complex pharmacological effects through mechanisms involving adenosine modulation, excitatory neurotransmitters, the enteric nervous system, as well as antioxidant and anti-inflammatory pathways. Overall, this study demonstrates that arabica coffee simplicia exhibits multipotential pharmacological activity, with responses strongly influenced by concentration and the composition of its bioactive compounds, thereby providing a basis for further research on the phytopharmaceutical potential of arabica coffee.

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.

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 use of technology in elementary school learning plays a crucial role in improving the quality of the educational process. One frequently used tool is the infocus (LCD projector), which serves to present learning materials in visual and audiovisual forms. The purpose of this study was to assess the effectiveness of using infocus-based learning media in elementary schools and its impact on student learning. The method used was a qualitative approach, collecting data through observation, interviews, and documentation. The results showed that the use of infocus can improve students' concentration, motivation, and understanding of the subject matter, as the presentation becomes more engaging and easier to understand. However, the use of infocus in elementary schools still faces various challenges, such as limited facilities and infrastructure, teacher readiness to operate the equipment, and technical problems such as power problems and additional devices. Therefore, supporting facilities and improving teacher skills are needed to ensure the effective and sustainable use of infocus as a learning medium.

The extract of Carica papaya L. leaves contains phytochemical compounds such as flavonoids, alkaloids, phenolics, and saponins that play a role in biological activities, including antioxidants, anti-inflammatory, analgesic, and modulation of the nervous system. This study aims to evaluate the effects of fresh papaya leaf extract on the central nervous system (CNS) and autonomic nervous system based on varying extract concentrations. The study used test animals with treatment groups consisting of negative control, positive control, and extracts at concentrations of 4%, 8%, and 16%. Parameters observed included parasympathomimetic (PSM), parasympatholytic (PSL), sympathomimetic (SM), sympatholytic (SL), analeptic effects (ANA), CNS stimulation (SSSP), CNS depression (DSSP), and muscle relaxation (RO). The results showed that the 16% concentration produced the highest PSM activity (46.82%) and dominant CNS stimulation (38.59%), while DSSP and RO decreased at higher concentrations. This phenomenon indicates that increasing the extract concentration does not always enhance CNS depression, but rather leads to stimulation. These findings support the potential of papaya leaf extract as a neuroprotective and multifunctional agent. Further research is needed to confirm its molecular mechanisms and clinical effectiveness as a phytotherapy candidate.

Academic stress has become a significant psychological issue among university students, particularly during periods of high academic pressure such as examinations, intensive coursework, and academic performance demands. Excessive academic stress may negatively affect students’ psychological well-being, learning motivation, and academic performance. This study aims to explore in depth the experiences of academic stress and psychological responses among students during periods of high academic pressure. A qualitative descriptive approach with a phenomenological perspective was employed to capture students’ lived experiences. Data were collected through in-depth semi-structured interviews with six student participants selected using purposive sampling. The data were analyzed using thematic analysis, involving open, axial, and selective coding to identify emerging themes. The findings reveal that the main sources of academic stress include excessive academic workload, time management difficulties, high self-expectations, and external academic pressures. Students experienced varying levels of stress ranging from mild to severe, manifested through psychological responses such as anxiety, emotional instability, mental fatigue, decreased concentration, and reduced motivation. The study also found that students applied diverse coping strategies, including adaptive strategies such as time management, seeking social support, and self-reflection, as well as maladaptive strategies such as procrastination and emotional withdrawal. These findings highlight that academic stress is a complex and subjective experience influenced by individual perceptions and coping capacities. The study implies the importance of supportive academic environments and accessible mental health services in higher education institutions to promote students’ psychological well-being and resilience. The results may serve as a reference for developing preventive and promotive mental health programs for students facing academic stress..    

This study examines the teacher's strategy in guiding the memorization of prayer prayers in early childhood at RA Muslimat NU Banin Banat Manyar through a qualitative case study approach. The main focus is the application of the practice (repetition) and habituation method, which was observed for 6-8 weeks in 35 children in group AB (aged 4-6 years), including participant observation, in-depth interviews with 4 teachers and 5 parents, and analysis of RPP documentation and murojaah videos. The results show that the practice method is applied rhythmically daily (3x / day, 10-15 minutes), starting from simple pronunciations such as iftitah and ruku' with 20-30 repetitions per chain cycle, resulting in an average increase in memorization from 42% to 91%, with variations in singing and movements reducing boredom by 27%. Meanwhile, integrated habituation through congregational prayer routines (Dhuha, Zuhur simulation, Ashar), independent ablution, and home supervision, achieved 89% of children's independence in becoming mini imams after 21 days consistently, supported by verbal rewards and gender row rotation. The discussion confirmed alignment with Piaget's theory (preoperational stage) and Vygotsky's (ZPD scaffolding), where drills build sensory memory schemes while habituation forms permanent religious character ala Abdullah Nasih Ulwan. Supporting factors include parental collaboration and a conducive NU environment, overcoming the obstacle of low concentration. Practical implications recommend replicating this strategy in similar RAs to optimize the golden age of Islamic early childhood, with memorization retention of 8-10 basic prayer prayers.

This study aims to evaluate the level of heavy metal pollution and the potential ecological and human health risks in the waters of Selangan, Bontang City. The research focuses on analyzing the concentrations of iron (Fe) and mercury (Hg) in sediment, considering that both elements are toxic, persistent, and capable of bioaccumulating within the food chain. The study was conducted over six months, from January to June 2023, at four sampling stations representing the environmental conditions of Selangan waters. The methodology included sediment sampling, sample preparation through drying and grinding, and laboratory analysis using Inductively Coupled Plasma–Optical Emission Spectrometry (ICP-OES) to determine Fe concentrations. The results were then compared with quality standards established by the Washington Annotated Code 173-204-320 and Indonesia’s National Agency of Drug and Food Control (BPOM) Regulation No. 5 of 2018. The findings indicate the presence of heavy metal contamination across all sampling stations. Fe concentrations ranged from 2.35 mg to 6.308 mg, significantly exceeding the permissible limit of 0.3 mg/L. Meanwhile, Hg concentrations ranged from 0.015 mg to 0.028 mg, also surpassing the standard threshold of 0.001 mg/L. These results clearly demonstrate heavy metal pollution in the Selangan waters, posing potential threats to marine ecosystem health and coastal communities. Regular monitoring and mitigation measures are urgently recommended to prevent further environmental degradation.

Wheat has limited nutritional content, therefore fortification with other ingredients is required to complement these nutrients, one of which is fortification with pineapple peel flour and chicken bones in noodle products. Thus, this study was conducted to investigate the impact of adding chicken bone and pineapple peel flours on the characteristics of wheat flour noodles, with the goal of developing a product enriched in fiber and minerals, and exhibiting acceptable sensory qualities. The research design used a completely randomized design (CRD) with 2 experimental factors, namely pineapple peel flour concentration (0%,3%,5%) and chicken bone flour concentration (0%,5%,10%) with triplicate replication. Based on the optimal treatment by Zeleny method, sample N1T3 emerged as the most favorable formulation. This sample exhibited the following chemical profile: a moisture content of 8.77%, an ash content of 4.52%, a protein content of 14.45%, a fat content of 1.52%, and a fiber content of 0.4%. Furthermore, sensory evaluation of Sample C yielded scores of 3.11 for color, 3.11 for aroma, 3.00 for taste, 2.89 for texture, and 2.89 for overall acceptance.

Academic stress is one of the main challenges experienced by postgraduate students due to complex academic workloads, such as thesis writing, scientific publications, work demands, and personal roles. This condition can trigger emotional exhaustion, decreased concentration, anxiety, and burnout. This study used the Systematic Literature Review (SLR) method to analyze the role of mindfulness as a stress management strategy in college students. The literature analyzed included studies from 2020–2025 that examined the relationship between mindfulness and academic stress, including interventions based on Mindfulness-Based Stress Reduction (MBSR) and Mindfulness-Based Cognitive Therapy (MBCT). The study results showed that mindfulness has a significant effect on reducing academic stress, improving emotional regulation, learning focus, sleep quality, and psychological well-being. Mindfulness also helps students build resilience and develop adaptive mindsets in dealing with academic pressure. These findings confirm that mindfulness can be an effective and applicable strategy in supporting the mental health of postgraduate students.

The purpose of this study was to determine how puzzle games affect the problem-solving abilities of early childhood children. This study used quantitative methods and a quasi-experimental design. The study involved children aged 4 to 6 years from various early childhood education institutions (PAUD). Purposive sampling was used to collect samples. Data were collected through pre-tests and post-tests of problem-solving abilities and observations of children's behavior while playing puzzles. Logical thinking, creativity, concentration, focus, use of problem-solving strategies, and willingness to learn were all metrics used for assessment. To determine the differences in abilities before and after treatment, the collected data were analyzed statistically. The results of the study showed that puzzle game intervention improved children's problem-solving abilities. Children learned to identify problems, make plans for solutions, and work independently. In addition, it was proven that puzzle games as a learning medium were more effective with the help and guidance of teachers and parents. According to this study, puzzle games are an effective tool for developing the cognitive, social, and emotional abilities of early childhood.

The purpose of this study was to examine how problem-based mathematics learning affected the learning interest of 5- to 6-year-old students at the Ki Hajar Dewantara State Kindergarten in South Jakarta. To compare problem-based mathematics learning and conventional learning, this study used a quantitative method and a quasi-experimental design. Problem-based learning is intended to use mathematical problems in children's daily lives. Children in group B were divided into experimental and control groups. To collect data, structured observations were conducted on elements of children's interest in learning. These included enjoyment, focus, activity, and willingness to participate in learning activities. To determine the difference in the level of interest in learning between the two groups, the data obtained was analyzed statistically. The results showed that, compared to conventional learning, problem-based mathematics learning had a significant effect on increasing children's interest in learning. Children showed more enthusiasm, better concentration, active involvement in activities, and critical thinking skills in solving mathematical problems. The results showed that effective problem-based mathematics learning made learning meaningful, enjoyable, and appropriate for the characteristics of early childhood development.