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Quality culture in educational institutions has become a strategic issue to improve learning service quality and school accountability. However, its implementation still faces challenges such as limited human resources, resistance to change, and weak sustainable quality management strategies. This study aims to answer the question: how are the implementation strategies and supporting factors in strengthening quality culture within educational institutions based on previous research findings? This study employs a Literature Review (LR) method by collecting scientific articles from Google Scholar and Publish or Perish (PoP) using the keyword “budaya mutu” (quality culture) with a publication range from 2020 to 2025. From a total of 30 identified articles, a screening and eligibility process was conducted, resulting in 5 main articles analyzed thematically. The synthesis reveals three key themes: (1) the role of leadership and Total Quality Management (TQM) in reinforcing quality culture, (2) the application of the PPEPP/MBBS cycle for sustainable educational quality, and (3) supporting factors and challenges in developing a culture of quality. In conclusion, strengthening quality culture requires effective leadership, systematic management strategies, and cross-sector collaboration; future research is encouraged to develop field-based intervention models to test the effectiveness of quality culture strategies.

The use of buck converters as DC step-down voltage regulators is increasingly important in various power electronics applications. However, the quality of the output voltage is often disturbed by the presence of ripple, which is influenced by variations in the duty cycle. This study aims to analyze the effect of duty cycle variations on the output voltage and ripple of a buck converter using MATLAB/Simulink simulation. The method used is quantitative simulation by varying the duty cycle from 10% to 90% in a buck converter circuit with fixed parameters: input voltage 30 V, switching frequency 40 kHz, inductor 176.25 μH, and capacitor 44.33 μF. The simulation results show that the output voltage is proportional to the duty cycle, increasing from 3.245 V at D=10% to 26.82 V at D=90%. The highest ripple occurred at D=40% with a value of 0.07 V, while the lowest ripple was at D=50% with a value of 0.0003 V. These findings indicate the existence of an optimal operating point where the system works most stably. This study provides practical guidance in designing efficient and stable buck converters for applications such as battery charging and renewable energy systems.

Quality control is a crucial aspect in various fields, such as education, the food industry, and manufacturing, as it functions to maintain the consistency of service or product quality. Inaccuracy in managing quality can cause financial losses, damage an institution's reputation, and reduce stakeholder trust. Based on this urgency, this study reviews recent literature to answer the main question of how quality control strategies can be effectively applied in diverse organizations. The review was conducted through a qualitative literature review approach by exploring scientific publications via Google Scholar and the Publish or Perish (PoP) application. Article selection was based on the relevance of keywords related to quality control and was limited to publications from 2020–2025. Out of 24 articles found, filtering was done until 5 of the most relevant articles remained for in-depth analysis. The analysis reveals three main findings. In higher education, a strong internal quality system and a sustainable quality culture are needed. The food industry emphasizes the standardization of raw materials and optimization of production processes. Meanwhile, the manufacturing sector makes extensive use of statistical techniques and tiered inspections. Overall, the effectiveness of quality control requires a combination of technical, managerial, and organizational culture aspects. Future research is recommended to explore the integration of digital technology and sustainability principles in quality control practices.

Service excellence has become a strategic issue in modern educational management because it is directly related to service quality, customer satisfaction, and the image of educational institutions. In the context of global competition and demands for public transparency, educational institutions are required to provide services that are effective, efficient, and oriented to the needs of students and the community. This study aims to systematically examine how the concept of service excellence is implemented in educational institutions and its impact on customer satisfaction. The method used was a systematic literature review, searching articles in national databases such as Google Scholar, Garuda, and campus journal portals using the keywords "service excellence," "service excellence," "education," and "customer satisfaction." Of the 20 articles found, seven met the analysis criteria. The results of the study revealed three main themes: improving the professionalism of educational staff, implementing the TQM concept in service, and strengthening a customer-oriented service culture. This literature synthesis concluded that service excellence significantly increases customer satisfaction and loyalty in educational institutions. Future research should focus on an integrative model of digital-based service excellence in educational institutions.  

The development of information technology has accelerated digitization in various sectors, including in the decision-making process. In the DayTrans Shuttle service, the selection of the best route is still done manually using Microsoft Excel. This process is time-consuming, inefficient, and has the potential to cause errors and subjectivity. The purpose of this study is to design and develop a web-based decision support system by applying the Weighted Product (WP) method to determine the most optimal shuttle route objectively and efficiently. The research data was obtained through interviews, observations, and literature studies, then analyzed according to system requirements. The development was carried out through the stages of requirements analysis, database and interface design, implementation, and testing. The developed system is equipped with features for managing criteria data, alternative routes, weight calculations, and real-time presentation of recommendation results. The research results show that the system functions well, is able to speed up the route selection process, and produces accurate and transparent recommendations. Thus, this system is expected to improve DayTrans' operational efficiency while supporting the quality of inter-city transportation services.

The Family Hope Program (PKH) is a conditional social assistance program provided by the government to improve the quality of life of underprivileged families through support in the education, health, and social welfare sectors. In its implementation, the process of determining PKH candidate recipients at the West Sumba Regency Social Service often experiences obstacles, especially with regard to objectivity, accuracy of targets, and limitations in complex data management. Thus, a decision support system (SPK) is needed that can assist the agency in selecting prospective recipients more effectively, efficiently, and on target. This study proposes the application of the Naive Bayes method in the development of SPK to determine PKH recipients. The Naive Bayes method was chosen because of its ability to classify data based on probability, and it can handle large volumes of data with a good degree of accuracy. The criteria applied in the classification include the level of household income, the number of members covered, the state of residence, the education of children, and the health of family members. The research process includes needs analysis, system design, data collection, application of Naive Bayes algorithms, and system testing. The findings of the study show that SPK based on Naive Bayes can provide recommendations for PKH recipients with better accuracy compared to manual methods. In addition, the system is able to improve transparency, fairness, and speed in the recipient selection procedure. With this system, it is hoped that the distribution of PKH in West Sumba Regency can be more orderly, balanced, and on target in accordance with the goals of government programs.

Bottled Drinking Water (AMDK) “VOCA” is produced by the Teaching Factory Water Treatment, Vocational School of Diponegoro University, to meet the hydration needs of the academic community. However, several issues have been identified, such as packaging defects, uneven product distribution, and stock shortages during peak demand, particularly at large-scale campus events. These issues may affect consumer satisfaction with the VOCA product. This study aims to analyze the influence of product availability, distribution, and product quality on consumer satisfaction. The research uses a quantitative approach with a survey method involving respondents who have consumed VOCA. The sampling technique applied was purposive sampling, and the data were analyzed using multiple linear regression. The results show that all three variables—product availability, distribution, and product quality—have a positive and significant effect on consumer satisfaction, both partially and simultaneously. Among them, product quality is the most dominant factor. These findings highlight the importance of consistently maintaining product quality, improving distribution systems, and ensuring stock availability to meet consumer expectations and enhance the competitiveness of VOCA on campus.

The development of information technology plays an important role in improving the quality of public services, including the processes of public complaints and grant submissions. Currently, these services at the Welfare Section of Situbondo Regency are still carried out manually, which often causes recurring problems such as delayed verification, lack of transparency in decision-making, and difficulties in data archiving and retrieval. These challenges not only slow down administrative processes but also reduce public trust in government services. Therefore, the design of a web-based information system is considered crucial to support the implementation of e-government and to ensure more effective, efficient, and accountable services. This study aims to design an integrated web-based information system that facilitates both public complaints and grant submissions within one platform. The research method applied is Object Oriented Analysis and Design (OOAD), which emphasizes systematic analysis and modeling using the Unified Modeling Language (UML). The analysis phase includes identifying system requirements, business process modeling, and defining functional and non-functional needs. The design phase produces various models such as business process design, input-output forms, application architecture using a three-tier structure, UML diagrams (use case, activity, class, and sequence diagrams), and database modeling. The results of this research are expected to provide a system design that improves the speed of service delivery, enhances transparency through real-time status tracking, reduces the risk of data loss by implementing digital archiving, and increases efficiency in the verification process. Overall, the proposed system design contributes to strengthening good governance practices in Situbondo Regency and serves as a reference for similar developments in other local government institutions.

Livestock production in rural communities relies heavily on the availability and quality of animal feed. In Aek Korsik Village, Asahan Regency, farmers continue to use manual methods to chop forage, which are time-consuming, inconsistent, and physically demanding. To address these issues, a portable forage chopper machine was designed and introduced through a community service program (KKN). The machine features a compact mechanical system powered by a small motor, making it lightweight, mobile, and easy to operate in various conditions. The implementation process included three stages: machine development, field testing, and community training. During testing, the machine efficiently processed forage materials like grass, corn stalks, and agricultural residues, producing uniform feed sizes much faster than manual methods. Farmers reported reduced workload, improved availability of chopped forage, and better livestock feeding practices. The portable design allowed the equipment to be shared among farming groups, fostering cooperation. This study underscores the role of appropriate technology in addressing rural agricultural challenges. By integrating engineering innovation with community service, the portable forage chopper machine enhances technical efficiency and socio-economic empowerment for farmers. Future improvements should focus on durability, cutting capacity, and sustainable energy alternatives to better meet the needs of smallholder farmers.

Equal access to education is a crucial issue in Islamic educational institutions in Indonesia. Ensuring that all students, without exception, have equal access to quality education is vital for the advancement of education in the country. In this context, Management Information Systems (MIS) play a crucial role in enhancing the efficiency, effectiveness, and transparency of educational services. The implementation of MIS can streamline administrative processes, improve decision-making, and facilitate more equitable access to educational resources. This research employs a literature study approach, relying on books and journal articles as primary sources. The findings indicate that the application of MIS provides significant benefits in terms of planning, management, and evaluation. By providing real-time data, MIS enables educational institutions to make better decisions, monitor student progress, and allocate resources more effectively. Additionally, MIS enhances the transparency of educational services, ensuring that all stakeholders—students, parents, and educators—have access to important information related to educational processes and outcomes. However, challenges in the implementation of MIS remain, such as technical barriers related to inadequate infrastructure and limited access to technology, as well as human resource issues like insufficient training. To address these challenges, the research recommends providing comprehensive training programs for educators and administrators, investing in technological infrastructure, and promoting data integration across educational institutions. Overall, while MIS offers many advantages in promoting equal educational access, addressing technical and human resource challenges is crucial to fully realizing its potential in Islamic educational institutions in Indonesia.

This study aims to determine the effect of knowledge sharing, personal knowledge, and work procedures on employee performance in Tanjungtirto 1 Public Elementary School. The background of this study is based on the importance of human resource quality in supporting organizational effectiveness, especially in elementary education institutions. The study population was all employees at Tanjungtirto 1 Public Elementary School with data collection using quantitative methods through questionnaires. The data obtained were then analyzed with the help of SPSS software through multiple linear regression tests to test the effect of independent variables on the dependent variable. The results showed that knowledge sharing did not have a significant effect on employee performance, as well as personal knowledge which also did not have a direct effect on performance. In contrast, work procedures were proven to have a positive and significant effect on improving employee performance. In addition, simultaneously knowledge sharing, personal knowledge, and work procedures together had a positive and significant effect on employee performance. This finding means that the existence of clear and structured work procedures has an important role in increasing work effectiveness, while knowledge sharing and personal knowledge require the support of a more focused management system to provide optimal contributions to employee performance in elementary school environments.

This study aims to determine the effect of training and competency development on the improvement of competencies among Papuan students in the YPMAK – Binterbusih Scholarship Program. The research is based on the importance of training and development in preparing high–quality and competitive human resources from Papua. A quantitative research method with a survey approach was employed. Data were collected through questionnaires distributed to recipients of the YPMAK – Binterbusih scholarship. The results of the analysis indicate that the training variable has a positive and significant effect on student competency improvement, with a significance value of 0.001 (p < 0.05). Likewise, the competency development variable also shows a significant influence with the same level of significance. Simultaneously, the two independent variables contribute 79.3% to the improvement of student competencies, while the remaining 20.7% is influenced by other factors beyond the scope of this study. These findings emphasize that systematically and relevantly designed training and development programs can enhance both the academic and non-academic capabilities of Papuan students. Therefore, it is recommended that YPMAK continue to enhance structured and sustainable training programs to develop a generation of Papuans who are competent and ready to compete at national and global levels.

The 5-star hotel is full of beauty, futuristic design, and perfect service. One of the components that guests complain about at the Tentrem Hotel Yogyakarta is housekeeping negligence. The research method is qualitative, with data collection techniques including interviews, observations, and documentation. The results of the study show that the forms of negligence that occur in housekeeping services at Hotel Tentrem Yogyakarta are 3 (three) actions: first, negligence in cleaning guest rooms, errors in placing guests' personal belongings, and delays in providing additional requests (amenity delay). Housekeeping negligence affects guest satisfaction at Hotel Tentrem Yogyakarta by reducing the reliability and tangibles dimensions of service quality. Guests feel the hotel cannot be trusted to provide a comfortable stay experience, leading to a decrease in the empathy and assurance dimensions. Guests feel their privacy is violated, which may even lead to suspicion toward hotel staff. Efforts to improve the negligence occurring in housekeeping services at Hotel Tentrem Yogyakarta involve three actions: implementing an inspection checklist and supervisor verification before guests check-in, ensuring staff are well-trained, educated, and professional in their work, and adopting a digital logistics system to record guest requests and prioritize deliveries.

Abdominal pain is one of the main complaints frequently encountered in patients in emergency departments and inpatient wards. This condition may be caused by various factors, ranging from gastrointestinal disorders and inflammation to reproductive system problems. Poorly managed pain can affect the patient’s quality of life, reduce daily activities, and increase anxiety. This case study aims to describe nursing care for Mrs. U, who presented with abdominal pain at dr. Soeselo Hospital, Tegal Regency. The research method applied was a case study with a nursing process approach, including assessment, diagnosis, intervention, implementation, and evaluation. The assessment revealed that the patient complained of lower abdominal pain with a pain scale of 5 (moderate), accompanied by nausea, weakness, and intermittent fever. The primary nursing diagnosis established was acute pain related to physiological injury agents. Interventions included pain management education, relaxation techniques, application of warm compresses, and collaboration in administering analgesics. The evaluation showed a decrease in pain intensity from a scale of 5 to 3, with the patient appearing calmer and showing improved sleep quality. This study emphasizes the crucial role of nurses in providing comprehensive care to reduce abdominal pain through both independent and the collaborative interventions with the medical team.

This study aims to analyze the influence of Human Resource Management and Good Manufacturing Practices on Improving Production Hygiene, with the research focused on employees of Bakpia Kukus Tugu Jogja. The problems that often occur are the ineffectiveness of implementing hygiene standards and weaknesses in the human resource management system which are the important basis for conducting this research. This study uses a quantitative approach with a survey method by distributing questionnaires to 102 respondents who are employees of Bakpia Kukus Tugu Jogja in the production and quality control divisions. Data analysis was carried out using multiple linear regression with the help of SPSS software version 25.

This article presents a review study that proposes a blended model combining actual programming techniques with queuing theory to improve the performance and service quality of service systems. The main objective is to design a system that is capable of serving customers as efficiently as possible, using solutions derived from queuing theory to regulate and optimize customer flow, while applying accurate programming methods to ensure that the system operates correctly and in accordance with established standards. The study discusses how these two approaches complement each other and demonstrates that integrating them provides a balance between operational efficiency and the quality of services delivered. To illustrate the effectiveness of this hybrid model, a case study is examined to highlight the practical impact and real-world implications of the proposed framework. Both mathematical formulations and experimental analyses were employed to evaluate the model’s effectiveness. Findings indicate that this combined approach not only enhances system reliability but also provides measurable improvements in customer satisfaction and service outcomes. By offering a structured way to integrate queuing solutions with precise programming, this research contributes to the development of more sustainable and effective service management strategies. The model therefore has significant potential for broader application in industries that rely heavily on service delivery and customer flow optimization.

Biomass is one of the materials that can be utilized as fuel. To ensure optimal quality, effective management of biomass is required to maximize its potential. One possible approach is the application of a biomass stove fueled by rubber wood pellets. By integrating a thermoelectric generator, data can be obtained to determine whether all aspects meet the established standards. This system is designed to generate electrical energy from combustion heat, supported by components such as a buck-boost converter and a 3V DC lamp. Testing was carried out using proximate and ultimate analyses on the fuel as well as the Water Boiling Test (WBT) on the stove, referring to SNI 8021:2020 and SNI 8021:2014 standards. The results showed that rubber wood pellets contained 7.64% moisture and had a calorific value of 4050 kcal/kg. The stove demonstrated an efficiency of 23.53%–37.28% and a fuel consumption rate of 0.61–0.77 kg/hour, both of which meet the requirements. In addition, the thermoelectric generator produced a voltage of 3.6 V and an electric current of 0.05 A, which are higher than those reported in previous studies (2.06 V and 0.01 A, respectively). Therefore, this thermoelectric biomass stove system is considered successful and feasible for further development as an alternative energy application.

The integration of Internet of Things (IoT) with cloud computing has revolutionized healthcare systems, offering scalable and real-time patient monitoring. However, optimizing response times and energy consumption remains crucial for efficient healthcare delivery. This research evaluates various algorithmic approaches for workload migration and resource management within IoT cloud-based healthcare systems. The performance of the implemented algorithm in this research, Hybrid Dynamic Programming and Long Short-Term Memory (Hybrid DP+LSTM), was analyzed against other six key algorithms, namely Gradient Optimization with Back Propagation to Input (GOBI), Deep Reinforcement Learning (DRL), improved GOBI (GOBI2), Predictive Offloading for Network Devices (POND), Mixed Integer Linear Programming (MILP), and Genetic Algorithm (GA) based on their average response time and energy consumption. Hybrid DP+LSTM achieves the lowest response time (82.91ms) with an energy consumption of 2,835,048 joules per container. The outcome of the analysis showed that Hybrid DP+LSTM have significant response times improvement, with percentage increases of 89.3%, 79.0%, 83.8%, 97.0%, 99.8%, and 99.94% against GOBI, GOBI2, DRL, POND, MILP, and GA, respectively. In terms of energy consumption, Hybrid DP+LSTM outperforms other approaches, with GOBI2 (3,664,337 joules) consuming 29.3% more energy, DRL (2,973,238 joules) consuming 4.9% more, GOBI (4,463,010 joules) consuming 57.4% more, POND (3,310,966 joules) consuming 16.8% more, MILP (3,005,498 joules) consuming 6.0% more, and the GA (3,959,935 joules) consuming 39.7% more. The result of ablation of the Hybrid DP+LSTM model achieves a 47.05% improvement over DP-only (156.57ms) and a 70.64% improvement over LSTM-only (282.41ms) in response time. On the energy efficiency side, Hybrid DP+LSTM shows 22.80% improvement over LSTM-only (3,671,51 joules), but 7.34% underperformance compared to DP-only (2,640,93). These research findings indicate that the Hybrid DP+LSTM technique provides the best trade-off between response time and energy efficiency. Future research should further explore hybrid approaches to optimize these metrics in IoT cloud-based healthcare systems.

Effective, efficient, and accountable public services are one of the fundamental pillars of good governance. At the village level, the success of these services is highly dependent on the performance of government officials, particularly in administrative services that directly address the community’s basic needs. This study aims to analyze employee performance in administrative services at the Maliran Village Head Office, Ponggok Subdistrict, Blitar Regency, and to identify obstacles faced during the service process. A descriptive qualitative research method was employed, with data collected through observation, interviews, and documentation. The findings indicate that employee performance can be categorized as fairly good based on ten performance indicators: work quality, work quantity, timeliness, effectiveness, independence, reliability, responsiveness, assurance, empathy, and tangible evidence. These aspects reflect that village officials are generally able to carry out their duties in meeting the administrative needs of the community. However, several obstacles remain, including reliance on digital technology that is not supported by adequate infrastructure, particularly the frequent occurrence of power outages which disrupts the continuity of services. The study highlights the importance of strengthening digital infrastructure, enhancing technical training for village officials, and ensuring the availability of backup systems to anticipate service interruptions. These efforts are essential to improve service delivery, strengthen public trust, and support the realization of good governance at the village level.

Traditional herbal medicine MSMEs face challenges in increasing the appeal of their products among the younger generation who prefer fresh and modern drinks. To overcome this, innovation in the presentation of herbal medicine is needed to make it more practical, hygienic and attractive. One solution is the manufacture of a microcontroller-based portable box cooler that can maintain the freshness of herbal medicine at an optimal temperature. This box cooler is equipped with an automatic cooling system controlled by a microcontroller, ensuring the jamu stays fresh and high quality for a longer period of time. A temperature sensor monitors and adjusts the cooling conditions as needed, so that the herbs remain at their best when served. In addition, the automatic dispenser system helps regulate the volume of herbs dispensed precisely, reducing wastage and maintaining flavour consistency. With its portable and efficient design, this box cooler is perfect for use in various locations such as bazaars, cafes, offices, or community events. This innovation not only improves the efficiency and competitiveness of MSMEs, but also reinforces the image of jamu as a modern and contemporary healthy drink, making it more attractive to young consumers.