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This study explores the phenomenon of abuse of authority in the investigation stage of corruption cases, focusing on various violations of practices, causative factors, and implications for justice and legal certainty. The study uses a normative juridical approach through the study of laws and regulations, legal doctrine, and empirical literature to build a comprehensive and systematic analysis. The findings indicate that oversight gaps, weak institutional control, and low integrity of the authorities are the main triggers for actions that go beyond authority, which in turn reduces the effectiveness of evidence and lowers public trust in law enforcement institutions. In addition, the lack of transparency and accountability mechanisms further exacerbates the risk of procedural violations during the investigation process. These conditions can potentially undermine the principles of due process of law and fairness in the criminal justice system. To address this problem, it is necessary to improve internal and external control mechanisms, strengthen supervision by independent institutions, and ensure the consistent implementation of disciplinary measures and legal sanctions against violators. By reinforcing these efforts, it is expected that law enforcement agencies can enhance professionalism, maintain integrity, and restore public confidence in handling corruption cases. (Soekanto & Mamudji, 2020; KUHAP; Corruption Law).

The high cost of colloid fluids and the large number of patients are concerns in determining which treatment standard should be chosen from several treatment alternative, where the total cost for 43 cases with a combination of crystalloid colloid fluids is IDR 209.370.993 while the total cost for 45 cases of crystalloid fluids is only UDR 146.492.268 which causes hospital losses. This study aims to determine the difference in the cost-effectiveness between crystalloid fluids and crystalloid-colloid combinations in hospitalized dengue fever patients without shock at Tangerang City Hospital. The research design used was cross-sectional with a comparative quantitative analysis method, where cost effectiveness was analyzed using the Average Cost Effectiveness Ratios (ACER) method. There were two groups of study samples: the first group, 25 patients who received crystalloid fluids, and the second group, 23 patients who received crystalloid-colloid combination fluids. This study showed a difference in the average hospitalization costs for dengue patients between crystalloid fluid therapy and crystalloid-colloid combination therapy. Hospitalization costs for dengue patients were lower in the crystalloid fluid group, with a significant difference (p=0.000). It was also found that crystalloid fluids were more cost-effective than the crystalloid-colloid combination. The implications of the study results consist of theoretical implications and practical implications. Based on the results of the analysis carried out, the crystalloid solutions are more cost-effective than crystalloid-colloid combinations. This finding can be used as a consideration in making decisions and policies that are in accordance with quality control and cost control for patients covered by the National Health Insurance (BPJS Health insurance).

This study aims to determine the effectiveness of the implementation of cooperative learning methods on learning outcomes and students' understanding of Islamic Religious Education (IRE) subjects for Class VIII at MT Hubbul Wathon Sangatta Selatan. This study uses a quantitative method with a quasi-experimental research type using a non-equivalent control group design. The study population was 48 students of class VIII A and VIII B, with a sample size of 44 students, each class consisting of 22 students from the experimental class and the control class. Data collection techniques were carried out through tests (pre- and post-tests), observation, and recording. Data analysis used descriptive statistics, normality tests, homogeneity tests, N-Gain tests, and hypothesis tests (t-tests). The results showed that the average learning outcomes of students in the experimental class increased from 61.14% in the previous class to 84.09% in the next class, while in the control class increased from 63.41% to 77.73%. The results of the normality test showed that the data were normally distributed and the homogeneity test showed that the variances of the two groups were identical. The t-test results showed a significance value of 0.000 < 0.05, so it can be concluded that there is a significant difference between the experimental class and the control class. Thus, the cooperative learning method has a positive and effective effect in improving student learning outcomes and understanding in the Islamic Religious Education subject for Class VIII MT Hubbul Wathon Sangatta Selatan.

This research is motivated by the problem of uneven bandwidth distribution in hotspot internet services at Oey Alycia Resto & Cafe, which negatively affects connection quality for users. The purpose of this study is to design and implement a bandwidth limitation-based hotspot internet system by applying a Fair Usage Policy (FUP) using Mikrotik devices, in order to achieve fair and efficient internet access distribution. The research method includes network requirement analysis, network topology design, Mikrotik RouterOS configuration, and system performance testing through direct observation and user questionnaires. The system implementation involves hotspot user authentication, per-user bandwidth allocation, and automatic speed reduction when data usage exceeds the predefined FUP threshold. The results show that the implemented system effectively limits excessive bandwidth usage by individual users, improves network stability, and ensures equitable internet access for all hotspot users. Furthermore, questionnaire results indicate positive user responses regarding improved internet service quality after the application of FUP. This research implies that the proposed system enhances the effectiveness of hotspot bandwidth management and can serve as a practical solution for public network administrators in optimizing bandwidth usage in a fair and controlled manner.

The development of Artificial Intelligence (AI) technology has significantly changed strategy and decision making in marketing management. However, the massive use of AI raises new challenges regarding ethics, transparency and governance. This research aims to analyze the impact of using AI, especially recommender systems and large language models (LLMs), on the effectiveness of marketing decisions, as well as the role of AI governance in controlling emerging ethical issues. The research method uses a quantitative approach with Structural Equation Modeling (SEM) analysis of data collected from 250 marketing professionals in Indonesia. The research results show that the use of AI has a significant positive effect on the effectiveness of marketing decisions (β=0.62, p<0.001), but also raises ethical issues (β=0.48, p<0.01). Ethical issues were proven to reduce the effectiveness of marketing decisions (β=-0.31, p<0.05), while good AI governance was able to moderate the negative impact of ethical issues (β=0.27, p<0.05). These findings underscore the importance of AI governance in building effective and ethical marketing systems.

This study aims to examine the effect of the Jigsaw learning model on X grade students of the Electrical Installation Engineering program at SMKS Raden Paku, enhanced with the use of the Kahoot! platform. The research employs a quantitative method with a quasi-experimental design and a nonequivalent control group design. The subjects of the study were divided into two groups: the control group, which applied the Jigsaw learning model using PowerPoint media, and the experimental group, which applied the Jigsaw model using the interactive Kahoot! media. Data were collected through pretest and posttest, as well as observation sheets to assess students' learning outcomes in the affective and psychomotor aspects. Data analysis techniques included normality test, homogeneity test, paired sample t-test, independent sample t-test, and normalized gain (N-Gain) analysis. The findings showed that the average learning outcomes difference between the control group (71.5%) and the experimental group (72.3%) was in the moderately effective category. However, the use of the Jigsaw learning model with Kahoot! had an effect on student learning outcomes, but the influence was not very large. This study provides insights into the effectiveness of using Kahoot! in the Jigsaw learning model.

Basketball requires mastery of basic technical skills and supportive physical conditions, including agility, which plays a crucial role in dribbling control and game effectiveness. In the extracurricular activities of Stepa Basketball Madiun, agility training has not been applied systematically, necessitating effective training methods to enhance athletes’ abilities. This study aimed to examine the effects of zig-zag run and shuttle run exercises on athletes’ agility and to compare the effectiveness of both exercises. A numerical methodology utilizing a pre-experimental One-Group Pretest–Posttest framework was implemented. The participants comprised 12 athletes between 13 and 15 years of age, who were allocated into two intervention groups. Data were collected using the Edgren Side Step Test before and after six weeks of training, conducted three times per week, and analyzed using t-tests. The results indicated that both exercises significantly improved athletes’ agility, with shuttle run showing a slightly greater improvement than zig-zag run. These findings reinforce the concept that agility can be enhanced through structured training emphasizing directional changes and speed, and provide practical implications for coaches to integrate shuttle run and zig-zag run exercises in training programs to optimize athletes’ performance.

Work engagement is a crucial factor that supports organizational effectiveness, particularly within public institutions that bear significant responsibilities in delivering public services. This study aimed to examine the relationship between Perceived Organizational Support (POS) and Work Engagement among Civil Servants (Pegawai Negeri Sipil PNS) at the Medan Center for Drug and Food Control (Balai Besar Pengawas Obat dan Makanan BBPOM). A quantitative approach with a correlational research design was employed. The study population consisted of 127 civil servants, all of whom were included as research participants using a total sampling technique. Data were collected using the Survey of Perceived Organizational Support (SPOS) and the Utrecht Work Engagement Scale (UWES). Data analysis was conducted using the Pearson Product-Moment Correlation test. The findings revealed a positive and significant relationship between Perceived Organizational Support and Work Engagement (r = 0.266; p = 0.002). These results indicate that higher levels of perceived organizational support are associated with higher levels of employee work engagement. Descriptively, the majority of respondents reported high levels of POS (66.9%) and high levels of work engagement (73.2%). The findings suggest that organizational support manifested through fairness, concern for employee well-being, supervisory support, and recognition of employee contributions plays an important role in enhancing employees’ vigor, dedication, and involvement in their work. This study provides practical implications for BBPOM Medan to continuously strengthen organizational support as a strategic effort to improve employee work engagement and optimize the performance of civil servants.

Reproductive health education is a critical need for adolescent girls who face various sexual and reproductive health risks, while access to comprehensive education remains limited. Advances in digital technology offer new opportunities through digital-based educational interventions that are more flexible and accessible. This study aims to evaluate the effectiveness of digital reproductive health education interventions for adolescent girls and to identify factors influencing their effectiveness. The method used was a literature review of studies employing randomized controlled trial designs that assessed various digital interventions, including mobile applications, text messaging, educational games, and entertainment-based videos. The findings indicate that digital interventions consistently improve adolescent girls’ knowledge and attitudes toward reproductive health and enhance their confidence in accessing health services. However, changes in risky sexual behaviors and long-term contraceptive use remain limited. The implications of this study suggest that digital interventions should be integrated with supportive approaches, such as family involvement and continuous follow-up, to achieve more effective and sustainable behavioral change.

This study aims to analyze the strategic management of disaster services in handling flood-affected communities in Surabaya City. This study uses a qualitative descriptive approach with an analytical framework of strategic management theory according to Wheelen and Hunger (2008), which includes four main stages: environmental observation, strategy formulation, strategy implementation, and evaluation and control. Data were obtained through documentation studies, field observations, and secondary data searches from official reports from the Regional Disaster Management Agency (BPBD), the Central Statistics Agency (BPS), and relevant online sources. The results show that the BPBD of East Java Province has implemented a systematic strategic management cycle in disaster services. During the environmental observation stage, the BPBD was able to identify the main threat in the form of the dominance of hydrometeorological disasters, particularly floods. During the strategy formulation stage, the BPBD established a mission, objectives, and strategic policies focused on disaster risk reduction, increasing community preparedness, and strengthening cross-sectoral coordination. Strategy implementation is realized through mitigation, preparedness, and emergency response programs, as well as the utilization of early warning systems and command centers. Meanwhile, evaluation and control are carried out continuously through monitoring disaster events and adjusting policies based on actual conditions in the field. The flood-affected community management strategy demonstrates a responsive and collaborative approach, despite still facing structural challenges such as tidal flooding and limited drainage infrastructure. This study concludes that implementing strategic management based on the theory of Wheelen and Hunger (2008) can improve the effectiveness of disaster services, but requires strengthening long-term mitigation and community empowerment.

This study examines the effectiveness of the THIEVES strategy in enhancing students’ critical reading comprehension in an English as a Foreign Language (EFL) context, particularly at the senior high school level. Employing a quasi-experimental research design, the study involved two groups: an experimental group taught using the THIEVES strategy and a control group that received conventional reading instruction commonly applied in the classroom. The participants consisted of tenth-grade students of SMA Muhammadiyah 8 Gresik who were selected to represent learners with similar academic backgrounds. Data were collected through pre-tests and post-tests that were specifically designed to measure students’ critical reading comprehension skills, including their ability to identify main ideas, infer meaning, and evaluate textual information. The findings revealed that students in the experimental group showed significantly higher improvement in post-test scores compared to those in the control group. Statistical analysis using paired-sample and independent-sample t-tests confirmed that the observed improvement was statistically significant and not due to chance. These results indicate that the THIEVES strategy effectively promotes active engagement, critical analysis, and deeper comprehension of reading texts. Therefore, the strategy is strongly recommended as an effective instructional approach for improving students’ critical reading skills in EFL classrooms.

Focusing on Yuli Bakery, this study aims to examine in depth how production planning budgets and cost effectiveness influence business profitability, particularly in the food and bakery industry sector. This research is based on the assumption that effective production planning can optimize the utilization of available resources, minimize raw material waste, and establish more efficient and structured business operational performance. The study explores the implementation of labor management, raw material management, and production process control oriented toward cost efficiency without reducing product quality, thereby enabling sustainable profitability improvement. The results of the analysis show that Yuli Bakery successfully reduced its cost of goods sold (COGS) by IDR 12,800,000, which directly contributed to an increase in operating profit and gross profit. This cost reduction did not affect overall production volume nor generate additional expenses in other cost components. These findings indicate that even in the absence of significant revenue growth, cost optimization through proper production planning can make a substantial contribution to improving Yuli Bakery’s profitability.

This study analyzes the strategic role of quality-based marketing models in enhancing the competitiveness of kombucha products, with a specific focus on Rumah SCOBY DBA, produced by the Yayasan Dharma Bintang Akademia. By integrating Total Quality Management (TQM), Quality Assurance (QA), and Quality Control (QC), the research explores how quality-driven frameworks contribute to marketing effectiveness, consumer trust, brand positioning, and sustainable performance in the functional beverage industry. Employing a Systematic Literature Review (SLR) combined with conceptual analysis, the study systematically examined publications from 2015 to 2025 across leading academic databases, focusing on themes of quality management, functional beverage marketing, kombucha production, consumer behavior, and digital strategies. The findings reveal that product quality—characterized by fermentation stability, microbiological safety, and nutritional consistency—serves as the primary driver of consumer purchase intention. Process quality, through standardized SOPs, hygiene protocols, and traceability systems, reinforces credibility, while service quality, including transparent labeling, health education, and digital engagement, strengthens brand trust. Integrating TQM principles into marketing fosters consumer loyalty, differentiates brands in competitive markets, and supports long-term sustainability. This study provides practical guidance for producers, community-based enterprises, and policymakers to adopt quality-driven marketing models, offering a novel conceptual framework tailored to kombucha products and mapping future research directions in functional beverage innovation.

The investigation stage constitutes a crucial phase in the criminal justice system, as it determines the direction and quality of subsequent law enforcement processes. Within the context of Indonesian criminal procedural law, the Criminal Procedure Code (Kitab Undang-Undang Hukum Acara Pidana/KUHAP) grants extensive authority to law enforcement officials, particularly investigators, in order to ensure the effective disclosure of criminal offenses. However, such dominance of authority has the potential to create an imbalance between the interest of law enforcement effectiveness and the protection of human rights, especially when it is not accompanied by adequate mechanisms of limitation and oversight. This study aims to critically analyze the dominance of law enforcement authority at the investigation stage and its implications for law enforcement effectiveness and the potential for abuse of power. The research employs normative legal research using statutory and conceptual approaches, supported by qualitative analysis of legal doctrines, legislation, and relevant academic literature. The findings indicate that while the dominance of investigative authority does contribute to the effectiveness of investigations, it simultaneously creates opportunities for abuse of power due to weak internal and external oversight mechanisms. This condition results in the erosion of the principles of due process of law and the protection of suspects’ rights within the criminal justice system. Therefore, this study emphasizes the need to strengthen judicial control mechanisms, enhance the accountability of law enforcement officials, and reform criminal procedural law in order to achieve a balance between effective law enforcement and the protection of human rights within a democratic rule-of-law state.

This study aims to develop a Student Worksheet (LKPD) on Chemical Bonding assisted by Augmented Reality (AR) based on deep learning and to examine its feasibility, practicality, and effectiveness in improving learning activities and higher-order thinking skills (HOTS) of high school students. The research employed a 4D development model (define, design, develop, and disseminate) using a pretest posttest control group design involving 11th grade students. Research instruments included expert validation sheets, learning activity questionnaires, and HOTS test instruments. Data were analyzed using descriptive and inferential statistical methods. The results indicated that the AR-based LKPD met very feasible and practical criteria based on expert judgment and student responses. Furthermore, there was a statistically significant difference between the experimental and control groups in learning activities and HOTS achievement (p = 0.005). The increase in HOTS scores in the experimental group was categorized as moderate, indicating meaningful learning gains. These findings demonstrate that the AR-assisted Chemical Bonding LKPD is effective as an innovative learning medium for supporting students’ understanding of abstract chemistry concepts and fostering higher-order thinking skills.

This study examines the role of the General Affairs (GA) Division in ensuring the effectiveness of administrative processes and facility management at PT. Panorama Indah Permai (Saloka Theme Park). The research was conducted during an internship program from September to December 2025, during which the researcher was directly involved in daily operational activities. Using a descriptive qualitative method, data were obtained through direct observation, administrative document analysis, and informal interviews with GA personnel. The results show that the GA Division functions as a critical support unit responsible for logistics management, documentation control, meeting room preparation, and operational vehicle administration. Several challenges were identified, including inconsistencies in documentation, high workload during peak operations, and limited digital integration. Despite these challenges, the GA Division plays a central role in coordinating with other departments to maintain workflow continuity. This study reinforces the relevance of operations management, office administration, facility management, and organizational communication theories in practical workplace settings. The findings imply that improving digital administrative systems, enhancing coordination mechanisms, and standardizing procedures could significantly strengthen GA performance and overall organizational efficiency.

The research was conducted at KSP Kopdit Obor Mas Maumere. The purpose of this study is to examine the effect of employees’education level and work experience on the effectiveness of the internal control system. The research method used is a quantitative approach with multiple linear regression analysis techniques. The research result show that the Education Level variable does not have a significant effect on the Effectiveness of the Internal Control System, while the Work Experience variable has a positive and significant effect on the Effectiveness of the Internal Control System. Simultaneously, both independent variables have a significant effect on the Effectiveness of the Internal Control System. The coefficient of determination (R2) indicates that variations in the effectiveness of the internal control system can be explained by Education Level and Work Experience. These findings affirm that Work Experience plays is dominant role in enhancing the effektiveness of the intenal control system, whereas Education Level is not a key factor in the context of this study.

This study aims to analyze the effectiveness of the internal control system in the Personnel Division of PT Sendang Derma Pesona in supporting effective, efficient, and well-governed human resource management. The background of this research is based on the importance of internal control systems in preventing administrative errors, reducing the risk of fraud, and ensuring compliance with labor regulations, particularly in personnel and payroll functions. This study employs a descriptive qualitative approach using an operational audit method. Data were collected through questionnaires, interviews, and document observation covering recruitment procedures, personnel data management, employee transfers, authorization processes, as well as payroll and bank reconciliation procedures. The results indicate that, in general, the internal control system in the Personnel Division has been implemented adequately, as reflected by complete personnel documentation and multi-level authorization in decision-making processes. However, several weaknesses were identified, including the lack of proper segregation of duties between payroll preparation and salary payment, the absence of regular bank reconciliation, and the continued use of manual personnel archive management. These weaknesses indicate that the internal control system still needs to be strengthened to minimize the risk of errors and improve the efficiency of personnel administration. The findings of this study are expected to provide practical implications for management in improving internal control policies and procedures to support better corporate governance and sustainable organizational performance.

Adolescents are a vulnerable group to digital sexual violence, including sextortion, which involves sexual extortion through threats to distribute sexually explicit content. Low levels of self-control may increase adolescents’ vulnerability to such risks. This study aimed to examine the effectiveness of psychoeducation in enhancing self-control understanding as a preventive effort against sextortion among adolescents. A quantitative approach with a pre-experimental one-group pre-test–post-test design was employed. The participants consisted of 36 students aged 15–17 years from a public senior high school in Samarinda. The psychoeducational intervention was delivered through interactive lectures, Focus Group Discussions (FGD), and educational video screenings. Data were analyzed using the Wilcoxon Signed-Rank Test. The results of the analysis showed a statistically significant difference (Z = −2.201; p = 0.028 (p < 0.05)). This indicates that there was a difference in adolescents’ self-control before and after the psychoeducation intervention. The post-test mean score (M = 8.39) was higher than the pre-test mean score (M = 8.00). These findings suggest that psychoeducation was effective in improving adolescents’ understanding of self-control as a preventive effort against sextortion. Self-control psychoeducation can therefore be considered a relevant preventive approach to be implemented in school settings.

This study aims to determine the effect of implementing the Problem-Based Learning (PBL) model on student learning outcomes in the Ignition System competency at SMKN 1 Katapang. The background of this study stems from the low understanding of students regarding the ignition system material due to the dominant use of the Teacher-Centered Learning (TCL) model, which tends to make students passive and only memorize concepts without understanding the overall working process. PBL is considered more relevant because it emphasizes real problem-solving, critical thinking, collaboration, and analysis according to constructivist theory. The method used is a quasi-experiment with a Nonequivalent Control Group Design. The research subjects consist of two classes of 11th-grade Light Vehicle Engineering students: an experimental group using the PBL model and a control group using TCL, with a total population of 70 students. Data collection was done through pretests and posttests using a validated multiple-choice objective test instrument. Data analysis includes comparing the learning outcome improvements of both groups to determine the effectiveness of PBL. The results show a more significant improvement in learning outcomes in the class using the PBL model compared to the TCL class. This proves that the implementation of PBL is effective in improving analysis skills and diagnostic skills in the ignition system. Therefore, PBL is recommended as a more suitable teaching model for practice-based subjects in vocational schools, especially in automotive electrical competencies.