This study was conducted to analyze the effect of rainwater on the survival of koi fry. The background of this study is based on the increasing demand for koi fish which encourages breeders to improve the quality and quantity of fry production. However, the success of seeding is influenced by several factors, especially air quality such as temperature and pH. Rainwater is known to have less stable quality, especially due to its low pH value, so it is necessary to study its impact on koi fry. This study was conducted on November 25–28, 2024 in the Bossbaster experimental pond, Legok Nyenang Village, Kadudampit District, Sukabumi Regency. The media used were 15 plastic gallons, each containing 5 liters of air and 40 newly hatched koi fry. The experimental design used a Completely Randomized Design (CRD) with 5 treatment levels and 3 replications. Treatments included A (100% rainwater), B (75% rainwater + 25% well water), C (50% rainwater + 50% well water), D (25% rainwater + 75% well water), and E (100% well water). The results of the ANOVA test showed that there was no significant difference (P>0.05) in the survival value of koi fish fry in the five treatments. Thus, it can be concluded that the use of rainwater does not have a significant effect on the survival of koi fish fry. In addition, the results of water quality observations showed that all parameters were still within the standard quality range, except for the temperature which was slightly below the standard.

Preventing and addressing bullying in schools is crucial for creating a safe and supportive educational environment for student development. Bullying, whether physical, verbal, or psychological, can have long-term impacts on the mental and emotional well-being of students who are victims. This study aims to explore strategies implemented by schools to address and prevent bullying, and to analyze the challenges faced in implementing these strategies. The research employed a descriptive qualitative approach with a case study approach in several schools in Indonesia. Data were collected through in-depth interviews with principals, teachers, students, and parents, as well as observations of school programs. Document analysis of school policies on bullying was also conducted. The study found that although most schools have policies related to bullying, insufficient supervision and a lack of parental involvement in supporting these policies remain obstacles. Other factors influencing the effectiveness of bullying prevention are teacher awareness and skills in addressing students' social issues. This study recommends a community-based approach, in which all parties, from students, teachers, and parents, play an active role in creating an anti-bullying culture. Training programs for teachers and outreach to students regarding the negative impacts of bullying need to be improved. With stronger policies and increased awareness, it is hoped that bullying can be minimized and addressed, making schools a safe place for learning and development. Implementing this community-based approach is expected to create a culture that is free from bullying and provide better support for victims of bullying.

Maternal anxiety during the childbirth process is a common psychological condition that can potentially increase the risk of complications, prolong labor, and reduce the likelihood of a positive birthing experience. High anxiety levels in mothers may interfere with the effectiveness of labor, impact maternal and fetal well-being, and lead to increased medical interventions. One of the most important support systems during labor is the presence and active involvement of the husband. The husband’s role is not only limited to being present but also includes providing emotional, physical, and motivational support to the mother. Recognizing the importance of this role, this community service program was designed to enhance husbands’ understanding and skills in supporting their wives during childbirth, thereby helping to reduce maternal anxiety.The program consisted of several stages, including the delivery of structured health education sessions on maternal needs during labor, demonstrations of effective communication techniques, simulations of support during different stages of childbirth, and interactive discussions to address questions and share experiences. Through these activities, participants were encouraged to build empathy, strengthen their knowledge about labor, and develop the confidence to assist their wives effectively. The results of the program indicated a noticeable improvement in the husbands’ awareness of the importance of their role, as well as increased confidence in providing both emotional reassurance and physical assistance. Participants reported feeling better prepared to accompany their wives, manage unexpected situations, and foster a more supportive environment during childbirth. This initiative highlights the significant impact that targeted education and training for husbands can have on maternal psychological well-being, ultimately contributing to safer and more positive birth experiences.

The handling of hazardous chemicals, such as sulfuric acid (H₂SO₄), in industrial processes requires a control system that ensures both operational reliability and safety. Manual pump operation in such contexts carries a significant risk of over-pumping, leaks, and exposure, which can lead to environmental contamination and safety hazards. To address this issue, this study focuses on the design and implementation of an automatic pump control system prototype using the Arduino Mega 2560 microcontroller. The system integrates three key sensors: a float switch for basic level detection, an ultrasonic sensor (HC-SR04) for precise liquid level measurement, and a water flow sensor (YF-S201) for monitoring flow rate. The prototype is programmed to automatically regulate pump operation based on real-time input from the sensors. When the liquid level reaches a predetermined threshold, the pump activates or deactivates accordingly. Sensor data, including fluid height and flow rate, are displayed in real-time on a 3.5-inch TFT LCD, allowing for direct operator monitoring. Both the hardware configuration and software algorithms were tested for functionality, response time, and accuracy under simulated industrial conditions. The results indicate that the system can reliably control pump activation with minimal error rates. The ultrasonic sensor demonstrated an average measurement error of 0.94%, while the water flow sensor achieved an error rate of 1.19%. The software successfully processed sensor data and executed output actions consistent with the programmed logic. Overall, this automated control system proved effective in mitigating the risk of over-pumping and improving safety in handling hazardous chemical fluids. Given its accuracy, reliability, and cost-effectiveness, the developed prototype is considered suitable for small- to medium-scale industrial applications, with potential for further refinement to meet larger operational demands.

This study aims to analyze the effect of brand awareness, celebrity endorser, and product quality on the purchase decision of Emina cosmetic products among university students in Berau Regency, East Kalimantan. The background of this research is driven by the significant growth of the local cosmetic industry and the high adoption of Emina products among young consumers, especially students. As a popular local cosmetic brand, Emina has successfully captured the attention of its young audience with approaches that resonate with their characteristics. Therefore, it is important to understand the factors influencing their purchasing decisions. The study uses a quantitative approach with a survey technique involving 100 purposively selected respondents. Data was collected through questionnaires and analyzed using multiple linear regression with the help of SPSS version 25. The results of the study show that, simultaneously, all three independent variables (brand awareness, celebrity endorser, and product quality) significantly affect the purchase decision of Emina products. However, when analyzed separately, only celebrity endorser and product quality have a positive and significant influence, while brand awareness does not show a significant impact on the purchase decision. Product quality proves to have the most dominant influence in driving the purchase decision, indicating that consumers prioritize product quality over other factors. The findings provide important recommendations for marketing strategies, particularly for Emina, to focus on emotional value-based promotions that resonate with the young audience. In addition, the selection of relevant celebrity endorsers and consistency in maintaining product quality are crucial factors to consider. This research is expected to contribute to the development of evidence-based marketing strategies in the local cosmetic industry, particularly in non-metropolitan areas, which face unique challenges in increasing product adoption.

Sukapura batik represents the local wisdom of the Tasikmalaya Regency community, showcasing their relationship with the surrounding natural and social environments. This batik has distinct characteristics, particularly in its color palette, which features dark blue, maroon, and beige tones. Despite its long history, Sukapura batik struggles to achieve the same recognition as well-known batik from regions like Cirebon, Solo, and Pekalongan. As a result, the number of batik artisans in Sukaraja has gradually declined. This research examines the communication efforts to preserve Sukapura batik and explore its growth potential. Using a qualitative method and a case study approach, the study gathers data from participants through interviews, observations, and the analysis of written documents, both online and offline. The results showed that there are differences in marketing strategies between craftsmen in Sukapura Village and Janggala Village. Sukapura Village craftsmen still rely on traditional marketing, while the Gandok Jaya Mukti Joint Business Group (KUB) utilizes exhibitions and social media. The main challenges are low digital literacy and limited capital. Sukapura batik has the potential for development, despite challenges posed by global competition. Realizing this potential depends on support from the local government in areas such as human resource development, as well as marketing and promotion through online channels. The sustainability of Sukapura batik relies on the government's and policymakers' proactive involvement to devise and implement strategies that enhance promotional and marketing endeavors, particularly those targeting the younger generation. Efforts to raise awareness of Sukapura batik require collaboration between artisans, the government, and the community. One approach is through education and training for young batik makers, as well as providing facilities to support digital marketing.

This literature review investigates the influence of fair value accounting (FVA) on enhancing financial transparency, particularly within the evolving context of digital assets. By analyzing 103 peer-reviewed articles, the study evaluates how FVA facilitates automated, real-time, and market-based disclosures. It identifies FVA as a tool for increasing investor trust and improving the clarity of financial statements by aligning valuations with current market conditions. The review also highlights the specific challenges of applying FVA to decentralized and volatile digital assets such as cryptocurrencies and non-fungible tokens (NFTs). Although FVA contributes to more transparent and relevant reporting, the implementation of FVA for digital assets is hindered by several critical issues. These include inconsistent valuation methodologies, lack of standardized regulatory guidance, susceptibility to market manipulation, and technological limitations in tracking asset value across decentralized platforms. Furthermore, the rapid pace of innovation in digital finance outstrips the adaptability of existing accounting standards and legal frameworks, creating a gap that weakens the consistency of fair value assessments. The review proposes the integration of FVA within a broader theory of decision-making under uncertainty, emphasizing the need for adaptive and digitization-responsive accounting practices. It suggests practical frameworks that align valuation procedures with the unique characteristics of digital assets while ensuring compliance with emerging regulations. This research encourages ongoing examination and policy innovation to ensure that FVA continues to support transparency and informed decision-making in a dynamic financial landscape.

This study aims to determine the effect of academic self-efficacy on academic performance in the 2021 intake of students at Padang State University. Academic self-efficacy is an individual's belief in their ability to complete academic tasks, which is believed to play a significant role in determining student academic achievement. This study used a quantitative approach with a survey method, involving 55 respondents as a sample. Data collection was carried out through a questionnaire using a Likert scale to measure students' academic self-efficacy levels, as well as data collection on their Grade Point Average (GPA) as an indicator of academic performance. Data analysis was carried out using the SPSS program, through several testing stages, namely instrument validity and reliability tests, and simple linear regression tests to determine the effect of independent variables on the dependent variable. The results of the analysis indicate a positive and significant influence between academic self-efficacy and academic performance. This is evidenced by the regression coefficient value of 0.009, with a calculated t-value of 15.278, which is greater than the t-table of 2.266, and a significance value of 0.006, which is less than 0.05. These findings indicate that the higher a student's level of confidence in their academic abilities, the better their academic achievement. Therefore, developing academic self-efficacy can be an important strategy for improving the quality of learning and student academic achievement.
 

Technological developments have penetrated various sectors of life, including in the transportation and communication lines in Indonesia. KAI Access is a digital service issued by PT Kereta Api Indonesia in the form of an application. This application is present as a strategic innovation to improve the convenience and comfort of customers in accessing various train services, from ticket bookings, schedule information, to cancellations and refunds. However, from the complaint data submitted by customers, there are two biggest problems that are often experienced, namely related to responsiveness and action from KAI Access which is considered slow in handling user complaints and technical problems. When quick response services are not accompanied by concrete settlement actions, customer trust tends to decline. This research is based on service theory with a service quality and excellent service approach, where the variables of responsiveness and action are the main focus in the analysis of customer loyalty. Using a quantitative approach, with data collection techniques in the form of questionnaires, interviews, and literature studies, the respondents in this study were KAI Access users from the Edan Sepur train loving community. The results showed that the action variable had a positive and significant influence on customer loyalty, while the responsiveness variable did not have a significant influence directly. An important conclusion from this study is that in the context of digital applications such as KAI Access, customers prioritize concrete problem solving rather than just quick response. Therefore, PT KAI needs to strengthen concrete actions in handling complaints to increase long-term loyalty. Therefore, PT KAI needs to strengthen concrete actions in handling complaints to increase long-term loyalty, especially in the era of digitalization of public services that continues to grow rapidly.

This study investigates the effectiveness of an integrative learning model in improving Indonesian literature appreciation skills among high school students. A quasi-experimental design was employed, involving 120 eleventh-grade students from two public high schools in Jakarta, Indonesia. The participants were divided into two groups: the experimental group, which received instruction through the integrative learning model, and the control group, which followed traditional teaching methods. The integrative model was designed to combine language skills development—such as reading comprehension, vocabulary enrichment, and critical writing—with structured literary analysis focusing on themes, characterization, style, and cultural context. Data were collected using pre-test and post-test assessments to measure learning outcomes, observation sheets to monitor classroom activities, and student questionnaires to capture perceptions and engagement levels. The results indicated that students in the experimental group experienced a significantly higher improvement in literature appreciation skills compared to those in the control group (p < 0.05). They demonstrated enhanced abilities to interpret literary works, analyze narrative elements, and articulate critical responses to Indonesian contemporary literature. Observation data revealed that the integrative approach fostered more active participation, collaborative learning, and deeper reflection during classroom discussions. Moreover, student feedback highlighted increased motivation, enjoyment, and perceived relevance of literature learning to real-life experiences. These findings underscore the pedagogical potential of integrative learning models in secondary school literature education. By linking language proficiency with analytical and interpretative competencies, this approach not only strengthens students’ linguistic abilities but also cultivates their critical thinking, cultural awareness, and aesthetic appreciation. The study recommends the wider adoption of integrative methods in Indonesian high schools as an effective strategy for promoting meaningful and enduring engagement with literature.