Publication Search

This studyyaims tooevaluate environmental activities at the Tenggilis Community Health Center by assessing compliance with occupational health and safety, risk management, and environmental health aspects. The method used is descriptiveequalitative with dataacollection through questionnaires, observation,iinterviews, andddocumentation. The analysis was conducted through reduction, presentation, and conclusion drawing. The results of the study show that the Tenggilis Community Health Center has generally met the criteria in each aspect, buttthere are still someeshortcomings. Innthe OSH aspect, training needs to be scheduled immediately. In risk management, all policies need to beeupdated to include the name and signature of theenew head offthe CommunityyHealth Center. In the environmental health aspect, deficiencies were found relateddto the completeness offthe administration of technical approval for wastewater quality standards and permits for B3 waste storage and wastewater treatment plants, which must be resolved immediately.

This study aims to analyze the impact of the USD/CNY exchange rate and the Federal Reserve interest rate on the stock returns of Volkswagen AG. Volkswagen AG is chosen as the object of analysis because it is a multinational corporation with significant exposure to the Chinese market, making it highly sensitive to fluctuations in global economic conditions, particularly exchange rate movements and monetary policy changes. The study adopts a quantitative research approach using multiple linear regression analysis to examine the relationships between variables. The data used are monthly secondary data covering the period from 2017 to 2023, resulting in 84 observations. The dependent variable in this study is Volkswagen AG stock returns, while the independent variables consist of the USD/CNY exchange rate and the Federal Funds Rate. The empirical results show that the USD/CNY exchange rate has a negative and statistically significant effect on Volkswagen AG stock returns, indicating that currency depreciation or appreciation plays a crucial role in influencing investor sentiment and firm valuation. In contrast, the Federal Funds Rate does not show a statistically significant effect on stock returns during the observed period. However, the simultaneous test indicates that both variables jointly have a significant influence on Volkswagen AG stock returns. Overall, the findings suggest that exchange rate risk is more dominant than U.S. monetary policy in affecting the stock performance of Volkswagen AG over the study period.

This study examines customer churn prediction in subscription-based telecommunications from a digital marketing perspective using machine learning. The analysis utilizes a secondary dataset of 7,043 customer records that simulate behavioral, contractual, and financial attributes commonly found in telecom services. Three classification algorithms Logistic Regression, Random Forest, and Gradient Boosting are applied to model churn behavior. Data preprocessing includes handling missing values, encoding categorical variables, and splitting data into training and testing sets. Model performance is evaluated using accuracy, recall, and ROC-AUC, with emphasis on recall due to its importance in identifying at-risk customers. The results show that Gradient Boosting achieves the highest overall performance with an ROC-AUC of 0.84, while Logistic Regression provides relatively higher recall. Key drivers of churn include short-term contracts, higher monthly charges, and lower service engagement. However, recall remains moderate, indicating limitations in capturing complex behavioral factors. These findings suggest the need to combine predictive models with behavioral insights and highlight the importance of early customer engagement and long-term retention strategies.

Reading ability is a fundamental skill that must be mastered by first-grade elementary school students as a foundation for understanding various subjects. However, in practice, many students still experience difficulties in early reading, such as recognizing letters, combining syllables, and understanding simple words. One alternative method that can be used to address this issue is the storytelling method in learning activities. This study aims to describe the effectiveness of the storytelling method in improving the reading ability of first-grade elementary school students. This research employs a qualitative approach using a literature study method. Data were collected from various sources, including scientific journals, books, and relevant previous studies published within the last five years. The data collection technique was carried out through documentation, while data analysis used content analysis by reviewing, comparing, and synthesizing findings from different sources. The results of the study indicate that the storytelling method is effective in improving students’ early reading skills. This method enhances students’ reading interest, enriches their vocabulary, and helps them recognize letters and words more easily in an enjoyable learning environment. In addition, storytelling creates an interactive classroom atmosphere and increases student engagement in the learning process. In conclusion, the storytelling method is an effective and relevant instructional strategy to improve the reading ability of first-grade elementary school students. Therefore, it is recommended as an innovative approach to support the development of early literacy skills.

Individual behavioral factors are critical determinants of organizational effectiveness and a vital component of modern organizational diagnosis. This study aims to identify and map individual behavioral factors as strategic indicators in organizational diagnosis using a Systematic Literature Review (SLR) approach guided by PRISMA 2020. Analysis of ten selected articles reveals that organizational effectiveness in the digital transformation era is driven by a reciprocal equilibrium between an individual's cognitive infrastructure and volatile work environment demands. The findings synthesize these behaviors into four strategic clusters: psychological well-being as primary infrastructure, digital structural support audits, justice and trust equilibrium, and psychological contract synchronization. This research provides tactical implications for Human Capital practitioners to transform annual diagnostic methodologies toward the implementation of monthly pulse surveys to detect fluctuations in well-being and disengagement intentions in real-time. This predictive diagnostic step is essential to mitigate turnover risks and design precise institutional interventions in hybrid work ecosystems.

This study is motivated by the fact that the regulation of securities investment and direct investment in Indonesia still faces legal harmonization issues between the provisions of Law No. 4 of 2023 concerning the Development and Strengthening of the Financial Sector particularly those governing the capital market and Government Regulation No. 63 of 2019 concerning Government Investment. This research aims to analyze the compatibility, substantial differences, and legal implications of the two regulations in the context of establishing an integrated and equitable investment legal system. This study applies a normative juridical approach with a descriptive analysis method. Data were collected using a literature study technique through a review of legislation, legal literature, and related policy documents. Furthermore, the data was analyzed using qualitative data analysis techniques with an emphasis on systematic interpretation and the principle of harmonization of laws and regulations. The results of this study indicate that there is still a lack of synchronization between the regulation of securities investment in the capital market and the mechanism of direct investment by the government, particularly in terms of authority, risk management, and legal accountability. The findings of this study imply the need for improvements to derivative regulations and implementation guidelines that are capable of integrating capital market legal principles with government investment policies in order to create legal certainty and effective management of national investments. Keywords: Legal Harmonization, Securities Investment, and Government Investment

The rapid development of Artificial Intelligence (AI) has brought significant changes to the criminal justice system, particularly in criminal investigations and evidentiary processes, while simultaneously raising complex legal and ethical challenges. Objective: This study aims to analyze the legal implications of the use of AI in criminal investigations, focusing on its benefits, risks, and challenges related to the admissibility of AI-based evidence, as well as the need for regulatory frameworks that ensure fairness, transparency, and accountability. Methods: This research employs a normative qualitative approach through the analysis of legal regulations, a review of legal and technological literature, and a comparative approach across jurisdictions, complemented by case studies of AI applications in law enforcement practices. Results: The findings indicate that AI enhances investigative efficiency through data analysis, crime prediction, and digital forensics; however, it also poses risks such as algorithmic bias, human rights violations, and issues concerning the reliability and transparency of evidence. Furthermore, differences across legal systems result in the absence of uniform standards for the admissibility of AI-based evidence. Therefore, adaptive regulatory frameworks grounded in the principles of fairness, transparency, and accountability are required, along with strengthened human oversight to ensure that the use of AI aligns with the principles of justice and human rights protection.

School snacks are one of the food sources commonly consumed by elementary school children; however, they are at risk of microbiological contamination if not properly managed. One of the pathogenic bacteria that can contaminate food is Salmonella, which can cause diarrheal disease. This study aimed to analyze hygiene and sanitation factors of food handlers on Salmonella bacterial contamination in pentol snacks at elementary schools in Palang District, Tuban Regency. This study used an observational analytic design with a cross-sectional approach. The sample consisted of 20 pentol vendors and 20 pentol snack samples. Data were collected through observation using a hygiene and sanitation checklist and laboratory examination to detect the presence of Salmonella bacteria. Data analysis was initially planned using the Chi-square test; however, due to homogeneous results, the analysis was conducted descriptively. The results showed that most vendors had good hygiene and sanitation (85%) and sufficient (15%). Laboratory examination results showed that all pentol snack samples (100%) were negative for Salmonella bacteria. In conclusion, pentol snacks at elementary schools in Palang District were microbiologically safe from Salmonella contamination.

This study aims to analyze the effect of Independent Board of Commissioners, Audit Committee, Family Ownership, and Voluntary Disclosure on Debt Costs in Basic Materials manufacturing companies listed on the Indonesia Stock Exchange for the period 2021-2023. Using purposive sampling and multiple linear regression analysis, the results show that the Independent Board of Commissioners and Family Ownership have a negative and significant effect on debt costs, while the Audit Committee, measured by meeting frequency, has a significant positive effect, and Voluntary Disclosure has no significant effect. These findings indicate that increased independent supervision and family control can reduce debt costs, but a high frequency of audit committee meetings can create a greater perception of risk in the eyes of creditors. This study has important implications for management and regulators in improving the quality of corporate governance and supervision to reduce debt costs.

This study evaluates the management audit of the procurement of goods and services for the 4G Base Transceiver Station (BTS) project managed by BAKTI Kominfo, with a primary focus on compliance with applicable regulations, the effectiveness of internal controls, and deviations at various stages of procurement. A qualitative approach was used, with analysis of documents, official news, and investigative audit findings from BPKP. The results indicate that the project procurement did not comply with Presidential Regulation No. 16 of 2018 and BAKTI Director Regulation No. 7 of 2020, with findings including tender manipulation, weak contract verification, and low levels of transparency. The planning process was also unsupported by adequate feasibility studies, while weak internal oversight exacerbated tender rigging and fund disbursements without proper verification. This study emphasizes the need for improvements in internal oversight, strengthening control mechanisms, and the implementation of e-procurement systems to enhance transparency and accountability in public procurement.

Chili (Capsicum annuum L) ) is one of the most important horticultural commodities widely consumed in Indonesia and has high economic value. To maintain productivity and prevent pest attacks, farmers commonly apply chemical pesticides intensively. However, excessive and improper pesticide application can leave harmful residues on the surface and within the tissues of chili fruits. The accumulation of these residues not only poses health risks to consumers but also contributes to environmental pollution, particularly in wastewater generated from chili washing activities. This study aims to reduce pesticide residues of Cherizeb and Emacel in chili washing water using the photolysis methodassisted by a ZnO/zeolite catalyst. Zinc oxide (ZnO) acts as a photocatalyst activated by ultraviolet (UV) light to produce reactive hydroxyl radicals (•OH) capable of decomposing complex organic compounds into simpler compounds such as CO₂ and H₂O. Meanwhile, zeolite is used as a catalyst support due to its large surface area and high adsorption capacity, allowing adsorption and photocatalytic processes to occur simultaneously. The results showed that the photolysis method using the ZnO/zeolite catalyst significantly reduced pesticide residues, with optimum degradation efficiencies of 85.66% for Cherizeb using 0.8 g ZnO/zeolite under UV irradiation for 60 minutes, and 83.97% for Emacel using 0.8 g ZnO/zeolite under UV irradiation for 75 minutes. The samples were characterized using Fourier Transform Infrared Spectroscopy (FTIR) to identify functional groups, indicating the disappearance of specific organic functional groups. Pesticide residues on chili samples were analyzed using UV-Vis spectrophotometry to determine concentrations before and after treatment. X-Ray Diffraction (XRD) analysis confirmed that the crystalline structure of the catalyst remained stable after the photolysis process. Based on these findings, the ZnO/zeolite catalyst is proven to be effective in reducing pesticide residues through photocatalytic degradation and has the potential to be applied as a safe, efficient, and environmentally friendly post-harvest technology to improve the quality of agricultural products.

Urban development has resulted in an increase in impermeable surfaces, increasing the risk of runoff inundating the road network. This situation occurs in the drainage system on Jl. Letjend S. Parman, Jl. Emo Kurniaatmaja, and Jl. Pulau Banda, Pasirkareumbi Village, Subang Regency. This study aims to evaluate the hydraulic performance of existing channels and develop redesign guidelines to reduce the risk of local flooding. The methods used include hydrological analysis of daily maximum rainfall data from the Subang rainfall station, rainfall frequency analysis using the Generalized Extreme Value (GEV) distribution, Intensity-Duration-Frequency (IDF) curves, and hydrological and hydraulic simulations using the Storm Water Management Model (SWMM). Model parameters include sub catchment area, rainfall intensity, time of concentration, infiltration using the Curve Number method, channel dimensions, cross-sectional shape, channel material, and the Manning coefficient. The results indicate that the GEV distribution provides a good fit for determining design rainfall. Based on the typology of a metropolitan city and a catchment area of ​​26.04 ha, the modeling period is 2 to 5 years. The SWMM simulation results indicate that some channel segments have very high flow velocities, potentially causing scour, while other segments have very low velocities, potentially causing sedimentation. This confirms the need for evaluation and restructuring of channel dimensions and slopes to improve the hydraulic performance of road drainage and reduce localized flooding.

Adolescent mental health is a crucial factor in supporting students’ academic success, social interactions, and personal development within the school environment. The various pressures faced by adolescents such as academic demands, developmental changes, and the influence of social and digital environments can increase the risk of mental health issues. Therefore, effective protective factors are needed, one of which is social support. This study aims to examine the relationship between social support and adolescent mental health in the school environment using a qualitative method with a literature review approach. Data were obtained from relevant, openly accessible national journals published between 2020 and 2025. Analysis was conducted using content analysis on 14 articles that met the inclusion criteria. The results of the study indicate that social support has a positive and significant relationship with adolescents’ mental health. Support from family, peers, and teachers has been shown to reduce stress and anxiety levels, as well as improve students’ psychological well-being, resilience, and coping abilities. Conversely, low levels of social support contribute to an increased risk of mental disorders among adolescents. Thus, social support serves as an important protective factor in maintaining and improving students’ mental health. The implications of this study underscore the importance of the involvement of families, schools, and the social environment in building a sustainable support system for adolescents.

This study critically examines the transformation of the regulatory framework governing Fixed-Term Employment Agreements (Perjanjian Kerja Waktu Tertentu/PKWT) following the enactment of Indonesia’s Job Creation Law and its implications for workers’ legal protection. The research focuses on the paradigm shift from a worker-protection-oriented model toward labor market flexibility and its impact on employment security. Using a normative juridical approach, this study employs comparative legal analysis between the Manpower Act No. 13 of 2003 and the Job Creation Law No. 6 of 2023, along with its implementing regulation, Government Regulation No. 35 of 2021. The analysis is supported by systematic statutory interpretation, labor law doctrine, and Constitutional Court Decision No. 168/PUU-XXI/2023. The findings reveal a significant regulatory shift characterized by the extension of the maximum duration of fixed-term contracts, the removal of mandatory grace periods for contract renewal, and the substantial narrowing of grounds for automatic conversion of PKWT into permanent employment agreements (PKWTT). Although the Job Creation Law introduces new protective instruments, including end-of-contract compensation and expanded social security coverage, these measures are insufficient to offset the decline in job security and legal certainty for workers. Consequently, workers face an increased risk of prolonged employment precarity. This study underscores the urgency of rebalancing labor market flexibility with the constitutional rights of workers in Indonesia’s future labor law reform. Keywords: Job Creation Law; Fixed-Term Employment Agreement (PKWT); Legal Protection; Labor Market Flexibility; Precarious Work; Constitutional Court Decision.

Administrative letter services at the village (nagari) level are still largely conducted using conventional methods, resulting in various issues such as limited service hours, slow processing times, and risks of document loss. This study aims to develop a web-based letter service system with the implementation of digital signatures in Nagari Bukit Bais to improve efficiency, security, and transparency of public services. The research adopts the Agile Development method with an iterative approach, including requirement analysis, system design, implementation, and testing. The developed system enables citizens to submit requests online and is equipped with features such as officer verification, digital signing by the village head, automatic notifications, digital archiving, and document verification using QR Codes. Security mechanisms are implemented using SHA-256 cryptographic hashing and RSA-2048 digital signature algorithms, supported by X.509 digital certificates. Functional testing using end-to-end methods shows that all system features operate successfully without failures, while non-functional testing confirms the reliability of document security and integrity. The resulting system is able to automate the entire service process, reduce processing time, and ensure document authenticity and security. Therefore, this system can serve as a solution to support the digital transformation of public services at the village level.

The objectives of the study are: 1) To analyze the level of vulnerability of agricultural land to flash floods in Nagari Pauh Kamang Mudiak, 2) To analyze the condition of agricultural land in Nagari Pauh Kamang Mudiak before and after the flash flood. The results of this study: 1) Analysis of the level of vulnerability of agricultural land to flash floods in Nagari Pauh Kamang Mudiak, namely in the safe class covering an area of 8.34 hectares, the non-vulnerable class covering an area of 12.01 hectares, the vulnerable class covering an area of 51.91 hectares and the very vulnerable class covering an area of 18.13 hectares. This shows that most of the research areas have a high level of vulnerability to flash floods. Furthermore, the analysis of flash flood risks with 4 risk classifications is an area with a low risk of 16.94 hectares, a moderate area of 30.60 hectares, a high area of 37.78 hectares, and a very high area of 5.07 hectares. Based on the results of this analysis, the agricultural land most affected by the flash flood in Nagari Pauh Kamang Mudiak is rice fields covering an area of 72.2 hectares, 2) Analysis of the condition of agricultural land vegetation in Nagari Pauh Kamang Mudiak before and after the flash flood, namely with 5 classes, namely the very low greenness class covering an area of 12.69 hectares, low covering an area of 29.69 hectares, medium covering an area of 13.22 hectares, and high covering an area of 34.84 hectares. The results of the accuracy test using overall accuracy reached a suitability of 89.58% and the kappa coefficient reached a suitability of 84.32%, meaning good accuracysuitability between the classification results and actual conditions in the field.

Exposure to toxic materials in the workplace remains a major occupational health and safety issue, particularly in industrial sectors with high chemical use intensity. Various control efforts have been implemented through industrial hygiene and occupational safety (OHS) programs, but their effectiveness varies. This study aims to analyze strategies for controlling toxic material exposure through industrial hygiene and OHS programs based on literature review over the past five years. The method used was literature review of 10 national journals relevant  the topic of toxic material exposure in various industrial sectors. The analysis results indicate that toxic material exposure is still found in various sectors, with types of materials such as heavy metals, organic solvents, toxic gases, and industrial dust. The most commonly implemented control strategies are the use personal protective equipment (PPE), administrative controls, and some engineering controls such as ventilation. However, the effectiveness of these controls is less than optimal due low worker compliance, limited supervision, and the minimal implementation of higher-level controls such as elimination and substitution. Therefore, it is necessary to strengthen integrated industrial hygiene programs, improve worker compliance, and implement a more comprehensive hierarchy of controls to minimize the risk of toxic material exposure in the workplace.

This study aims to analyze the impact of the geopolitical conflict between the United States, Israel, and Iran in 2026 on global macroeconomic stability and climate change dynamics. Using a qualitative approach through a Systematic Literature Review (SLR), this research synthesizes findings from various international journal articles, reports, and academic sources. The results indicate that the conflict has significantly disrupted global energy markets, leading to a sharp increase in oil and gas prices. This energy shock has triggered global inflationary pressures, reduced purchasing power, and increased economic uncertainty across both developed and developing countries. Furthermore, monetary tightening policies implemented to control inflation have created trade-offs with economic growth, increasing the risk of global recession. On the fiscal side, government interventions such as energy subsidies have helped mitigate short-term impacts but have raised concerns about long-term fiscal sustainability. In addition, the energy crisis has slowed the transition toward renewable energy, thereby exacerbating climate change risks. The study highlights the interconnectedness between geopolitical conflict, macroeconomic instability, and environmental sustainability. Therefore, coordinated global policies and integrated economic strategies are essential to address these multidimensional challenges effectively.

This study aims to analyze the protection of victims of sexual violence crimes from a victimology perspective within Indonesian criminal law. This research employs a normative legal method with a qualitative approach, utilizing statutory and conceptual approaches. Data were collected through library research based on legislation and recent scientific journals published between 2021 and 2026. The results indicate that, normatively, Indonesia has established a relatively strong legal framework, particularly with the enactment of Law Number 12 of 2022 concerning Sexual Violence Crimes. However, its implementation remains constrained by several challenges, including limited capacity of law enforcement officials, weak inter-institutional coordination, and structural and cultural factors such as patriarchal culture and victim blaming practices. Furthermore, victims are still at risk of experiencing revictimization during the criminal justice process. From a victimology perspective, this condition reflects that the Indonesian criminal justice system is still in a transitional phase toward victim-oriented justice. Therefore, strengthening the victimological approach through comprehensive legal reform, enhancing the professionalism of law enforcement officers, and transforming legal culture in society are essential to ensure effective and substantive justice for victims.

Aggressive behavior is one of the manifestations commonly found in individuals with mental disorders, and this can potentially cause harm both to themselves and to their surroundings. To address this condition, one non-pharmacological approach that can be implemented is the use of Mozart classical music therapy. This study aims to evaluate the impact of Mozart classical music therapy on patients who have the potential to exhibit violent behavior at Aceh Mental Hospital. The research activities were conducted from July 2 to 5, 2025. The research design adopted in this study is pre-experimental using the One group pretest-posttest Design method. The study subjects consisted of 15 inpatients who had been identified as being at risk for violent behavior, with sample selection carried out through purposive sampling. The findings of the study showed that the average score of signs and symptoms before the intervention was 5.73, with a score range of 3 to 8. After the intervention in the form of Mozart classical music therapy, the average score of signs and symptoms decreased significantly to 1.60, with a range between 1 and 2. Statistical analysis using the Wilcoxon Signed Rank test showed a Z value of -3.437 with a significance level of P = 0.000 (P < 0.05). Based on these results, it can be concluded that Mozart classical music therapy has a significant effect in reducing the risk of violent behavior in patients. Therefore, Mozart classical music therapy is recommended as an effective supportive intervention and can be routinely integrated into psychiatric care rooms.