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Steam turbines remain a core technology in thermal power generation and continue to evolve through advances in aerothermal design, materials, control strategies, and digital maintenance. This paper presents a systematic literature review (SLR) of recent international studies published between 2020 and 2025 to synthesize current developments in steam turbine performance and thermal efficiency improvement. Article identification was conducted through SCOPUS using keywords related to turbine efficiency, blade/nozzle optimization, failure analysis, and material enhancement. The selected studies were analyzed thematically across four domains: (1) design and optimization using CFD/FEA, (2) material and structural resilience, (3) operational performance under variable/part-load conditions, and (4) integration with hybrid renewable systems and predictive maintenance. The reviewed evidence indicates that CFD-based nozzle/blade optimization and advanced control approaches can yield measurable efficiency improvements (approximately 2–7.3%), while material innovations and enhanced cooling strategies improve durability by mitigating thermal stress and fatigue risks. In parallel, digitalization through IoT-based predictive maintenance and additive manufacturing is increasingly reported as a pathway to reduce downtime and accelerate component production. However, recurring gaps include limited real-world validation, insufficient studies in humid/tropical environments, and a lack of long-term economic/lifecycle assessments. Future work should prioritize experimental or field verification, region-specific performance studies, and integrated techno-economic evaluation to support broader deployment of high-efficiency steam turbine systems.

This research aims to develop an E-Catalog Information System for the Library of SMPK St. Yohanes Wewewa Barat as a digital platform that provides students and teachers with fast, accurate, and efficient access to book collection information. The system is designed to replace the previous manual book search process, which often caused delays and reduced the effectiveness of library services. The development of this system applies The Model-View-Controller (MVC) method structures the system by dividing it into three distinct parts: the model, the view, and the controller, each with its own specific function resulting in a structured architecture that is easier to manage, maintain, and improve. This method was chosen because it supports modular development and provides flexibility for future system enhancements. The results of this study show that the developed e-catalog system functions properly and performs well according to the intended design. All main features, including book searching, book detail display, and book data management, operate optimally without significant issues. Moreover, the system helps improve the efficiency of library services and enhances the user experience in accessing digital book information.

Corruption is an extraordinary crime that has multidimensional impacts on a country’s social, economic, and political life. In Indonesia, corruption cases not only cause financial losses to the state but also undermine public trust in the government and weaken the rule of law. This study examines the case of social assistance (bansos) corruption during the Covid-19 pandemic involving former Minister of Social Affairs, Juliari P. Batubara, who was proven to receive bribes from vendors providing social assistance amounting to tens of billions of rupiah. The study aims to understand the regulation of corruption under Indonesian law, the chronology of the bansos corruption case, and the criminal liability of the former Minister of Social Affairs. The analysis shows that this case not only caused financial losses to the state but also inflicted social suffering on the poor affected by the pandemic and reduced the government’s legitimacy. The prison sentence, fines, and obligation to pay state compensation imposed on Juliari affirm the principle of criminal accountability, while digital-based reform in social assistance distribution and multi-layered supervision serve as preventive measures to curb future corruption. This study emphasizes the importance of transparency, accountability, and strict law enforcement in combating corruption in Indonesia.

This study examines the ideas of Ziauddin Sardar and Azyumardi Azra in three major areas: Islamic education, digital religious authority, and religious moderation. Using a library research approach, this article analyzes how Sardar’s Postnormal Times (PNT) framework explains global complexity, chaos, and contradictions that shape the future of Islamic thought and education. Meanwhile, Azra’s concept of Islam Nusantara and wasathiyah provides a historical and cultural foundation for constructing moderate Islamic identity in Indonesia. Findings indicate that Sardar emphasizes adaptive education oriented toward future literacy, while Azra highlights the integration of tradition, modernity, and local culture. In the context of digital authority, Sardar views the transformation as a structural effect of postnormal conditions driven by algorithmic systems, while Azra stresses the need to strengthen scholarly legitimacy based on sanad, institutions, and ethical guidance. Both perspectives converge on the importance of moderation. Sardar presents moderation as a strategy to manage global complexity, whereas Azra positions wasathiyah as the inherent identity of Islam in the archipelago. This study concludes that synthesizing both frameworks can strengthen Islamic education, stabilize digital religious authority, and reinforce Indonesia’s moderate Islamic identity in responding to contemporary challenges.

This study aims to describe the forms of emotional trauma experienced by adolescent victims of verbal violence in Tuntungan Village 1. The study used a qualitative approach with a case study method on three adolescents who were purposively selected based on their experiences of verbal violence in their family environment. Data collection techniques included in-depth interviews, participant observation, and documentation to obtain a comprehensive picture of the psychological condition of the research subjects. The obtained data were then analyzed descriptively qualitatively through the processes of reduction, presentation, and drawing conclusions. The results of the study indicate that verbal violence has a significant impact on the emotional health of adolescents, including decreased learning motivation, the emergence of withdrawal behavior from social environments, and the loss of a sense of security and comfort within the family. In addition, harsh, demeaning, and repetitive family communication patterns form a negative self-concept in adolescents, which has the potential to affect personality development and social relationships in the future. The findings of this study emphasize the important role of families, schools, and communities in creating a supportive environment, as well as the need for preventive efforts and psychosocial interventions to prevent and address emotional trauma in adolescents on an ongoing basis.

Type 2 diabetes mellitus is a chronic metabolic disease that requires comprehensive management, including insulin therapy; therefore, the knowledge, attitudes, and practices of medical students as future physicians play an important role in therapeutic success. This study aimed to describe the level of knowledge, attitudes, and practices of medical students of the Faculty of Medicine, Universitas Tarumanagara, Class of 2022, regarding insulin administration in patients with type 2 diabetes mellitus. This study employed a quantitative descriptive design with a cross-sectional approach involving 93 respondents. Data were collected using questionnaires assessing knowledge, attitudes, and practices related to insulin administration and analyzed descriptively. The respondents had a mean age of 21.08 years (median 21; range 20–26 years) and were predominantly female (69 respondents; 75.5%). The results showed a mean knowledge score of 8.5 ± 1.47, with 56.1% of respondents categorized as having good knowledge. Attitudes toward insulin administration had a mean score of 7.67 ± 1.25, with 56.1% classified as good, while insulin administration practices were categorized as very good, with a mean score of 9.99 ± 0.74 and 95.7% of respondents in the good category. This study indicates that medical students of Universitas Tarumanagara Class of 2022 possess good levels of knowledge, attitudes, and practices regarding insulin administration in patients with type 2 diabetes mellitus.

This research explores strategies for developing the Lewaja Natural Tourism Area in Enrekang Regency, which has considerable potential as a leading destination but has not yet been managed effectively. The study aims to examine the current conditions of the site, highlight its opportunities and constraints, and design strategies for sustainable development. A descriptive qualitative approach was employed, utilizing SWOT (Strengths, Weaknesses, Opportunities, Threats) in conjunction with IFAS and EFAS to establish strategic priorities. The results indicate that Lewaja possesses advantages in terms of natural scenery and accessibility, while weaknesses are found in facility provision and managerial aspects. The proposed strategies derived from the SWOT framework emphasize infrastructure improvement, enhancement of supporting amenities, digital-based promotional efforts, community involvement in destination management, and stronger collaboration between governmental bodies and the private sector. Overall, the study concludes that the future development of Lewaja Peak Natural Tourism should align with the principles of sustainable tourism, aiming to increase its attractiveness, raise service standards, and deliver economic value to the local community.

Advances in in vitro fertilization (IVF) technology have expanded the scope of reproductive interventions, from simply addressing infertility to enabling genetic selection of embryos through preimplantation genetic testing (PGT). This advancement not only enables the detection and prevention of severe genetic diseases, but also opens up opportunities for the selection of non-medical traits such as intelligence potential, physical characteristics, or specific polygenic scores, giving rise to the phenomenon of “designer babies.” This development presents complex bioethical issues related to human dignity, social justice, biological safety, and the right of children to have an open future. This paper aims to analyze the ethical issues of selecting non-medical characteristics of embryos in modern IVF through a literature review using a biomedical ethics framework, including the principles of autonomy, beneficence, non-maleficence, and justice. The findings show that the application of technology for non-medical purposes is still fraught with scientific risks, biological uncertainties, the potential for commercialization of humans, and the threat of socio-biological inequality. This analysis emphasizes the need to restrict the use of technology to clear medical indications, increase regulation and governance, and involve the public in policy formulation. Thus, advances in reproductive technology must be accompanied by strict ethical considerations so as not to sacrifice individual dignity and the value of justice in society.

The forest fire that occurred in Mount Merbabu National Park in October 2023 had a significant impact on hiking tourism activities along the Thekelan trail in Semarang Regency, Central Java, Indonesia. This study aims to identify the impacts of forest fires on hiking tourism, explore stakeholders’ perceptions of post-fire management challenges, and develop an applicable adaptive management framework for the sustainable management of hiking tourism. The research employed a qualitative descriptive approach, with data collected through semi-structured interviews involving basecamp managers, national park officers, hikers, and local community members. The findings reveal that the wildfire caused severe vegetation damage, an estimated eighty percent decline in community income, and disruptions to both ecological balance and tourism activities. Despite these challenges, the local community demonstrated strong solidarity and active participation in recovery and rehabilitation efforts. The study proposes an adaptive management framework encompassing impact assessment, collaborative planning, rehabilitation and education, phased reopening, and continuous monitoring and adjustment. The adaptive management approach proves effective in enhancing the resilience of nature-based tourism destinations to future environmental disturbances and in promoting sustainable tourism practices.

The shift in economic structure from a reliance on traditional agriculture to modern industrialization has yielded various competitive advantages for a region. The presence of leading sectors at the local level is a strong indicator of increased added value and high productivity, fueled by a healthy competitive climate among business actors. This phenomenon is closely related to the characteristics of the industrial sector, which possesses very strong forward and backward linkages, making it a primary driver of national economic growth. Progress in the manufacturing sector is not merely a measure of economic success but also serves as a driver of fiscal stability through massive employment absorption and increased foreign exchange earnings. Industrial growth is considered highly strategic because it holds significant potential for future expansion through technological innovation and production efficiency. This condition makes industrial cluster development an instrument for driving sustainable economic growth in Indonesia, while simultaneously strengthening the competitiveness of local products in the global market through the integration of a more organized production system.

Customer satisfaction is a central issue in marketing management, as it plays a crucial role in determining customer loyalty amid increasingly intense business competition. A comprehensive understanding of the factors influencing customer satisfaction is essential not only for academics in strengthening marketing theory but also for practitioners in designing effective service and product strategies. This article aims to address two research questions: (1) what are the dominant factors influencing customer satisfaction, and (2) how does customer satisfaction relate to customer loyalty? The study employed a qualitative literature review method. The data consisted of scientific articles published between 2020 and 2025, accessed through Google Scholar and Publish or Perish (PoP) using the keyword “customer satisfaction.” From an initial selection of 30 articles, 27 were identified as relevant, and 5 core articles were further analyzed. The findings reveal three main themes: product and service quality as the dominant determinants of customer satisfaction; price, brand image, and promotion as supporting factors; and customer trust as an important mediating variable in building loyalty. This study concludes that customer satisfaction serves as a strategic link between service quality and customer loyalty. Future research is encouraged to explore the roles of digitalization, customer experience, and sustainability in shaping long-term customer satisfaction.

This study aims to analyze the influence of Innovative Work Behaviour, Upskilling, and Work Ethic on the Health Workers Performance with Intention to Stay as an intervening variable at RSUD Sumberrejo. The background of this research stems from challenges in improving service quality, high workload, and the need to strengthen competency and retention among health workers. The study employs a quantitative approach using a survey method through the distribution of questionnaires, with data analyzed using Partial Least Squares–Structural Equation Modeling (PLS-SEM) through SmartPLS version 4.0. The population consists of 216 employees, and the sampling technique used is non-probability sampling, resulting in 140 respondents. The findings reveal that Innovative Work Behaviour, Work Ethic, and Intention to Stay have a significant positive effect on the performance of health workers. In addition, Innovative Work Behaviour and Work Ethic significantly influence Intention to Stay. However, Upskilling shows a positive but non-significant effect on both Intention to Stay and Performance, indicating that skill enhancement requires managerial support and motivation to contribute effectively to employee performance. Intention to Stay serves as a mediating variable in several relationships among the constructs. Strengthening innovative behaviour, work ethic, and competency development, accompanied by appropriate retention strategies, is essential for improving the performance of health workers in regional hospitals. Future studies are recommended to develop the research model by incorporating additional variables that may have stronger effects on Intention to Stay and Performance. Keywords: Innovative Work Behaviour; Upskilling, Work Ethic; Intention to Stay; Health Workers Performance

This study analyzes and designs a dual-role web-based ordering information system to optimize order management at Sunrise Bakery. This SME currently faces inefficiencies due to manual recording. The system, developed using the SDLC Waterfall method with PHP and MySQL, serves two main actors: customers, who can order online, browse catalogs, track orders, and pay digitally; and administrators (admin, cashier, owner), who manage products, update stock, input in-store orders, generate daily/monthly sales reports, and manage user access. Black Box Testing confirms all core functions work correctly. The system successfully addresses manual process shortcomings by improving data accuracy and providing real-time monitoring for both customers and management. It offers a comprehensive digital solution to enhance operational efficiency and service quality. Limitations include the lack of integrated digital payment gateways and external messaging. Future development should incorporate payment gateways (e.g., OVO, GoPay), WhatsApp notifications, a mobile application, and predictive analytics for sales and stock forecasting.

This study aims to develop a web-based inventory information system to facilitate inventory data management and improve operational efficiency at Toko Anugerah Sticker. Currently, inventory management is still performed manually using paper, which complicates monitoring stock, recording incoming and outgoing items, and preparing reports accurately and promptly. To address these issues, the system was developed using the Waterfall method, consisting of five stages: requirement, design, implementation, verification, and maintenance. PHP was employed as the programming language for system development, while MySQL served as the database for storing inventory data. The system was tested using Blackbox testing to unsure that each function worked as expected. The result show that the web-based inventory information system successfully replaced the manual process, making inventory management more effective and efficient. It also enables real-time stock monitoring and generates reports faster and more accurately. The implementation of this system is expected to improve the quality of inventory data management at Toko Anugerah Sticker in the future.

Hypertension is a highly prevalent non-communicable disease often referred to as "The Silent Killer" because it rarely shows symptoms until it causes serious complications such as stroke, kidney failure, and heart disease. This community service activity aims to optimize the Mobile Blood Pressure Monitoring Program as a hypertension screening method in Sanahu Village. The methods used include participant data collection, blood pressure checks with a manual sphygmomanometer, and health education on hypertension prevention. A total of 96 participants participated in this activity, and the results showed that 58 participants (60.4%) were hypertensive. This program has proven effective in reaching communities with limited access to health services and raising public awareness about the importance of early detection of non-communicable diseases. In addition, this activity succeeded in providing knowledge to the community about how to prevent hypertension and the importance of maintaining a healthy lifestyle, which is expected to reduce the incidence of hypertension in the future.

The advancement of technology has made social media a strategic platform for companies, including PLN Icon Plus, to build corporate image and reputation through public interaction and the promotion of Corporate Social and Environmental Responsibility (TJSL) programs. This study aims to identify and analyze effective social media management strategies and measure their effectiveness in improving the company's image. Employing a qualitative approach, data was collected through in-depth interviews, observation, and content analysis on the PLN Icon Plus platform, conducted from August 19 to December 20, 2025. The findings indicate that the implemented strategies, which include rapid interaction, the use of engaging visuals (especially reels focusing on TJSL), collaboration with national news media, and publication of achievements, are proven effective. Instagram insights analysis showed a significant increase in content views, reach, and interaction from August to November 2025. The study concludes that proper social media management is essential for building a positive image, with implications for the need for continuous content innovation, active audience interaction, and routine evaluation to achieve future business goals.

This study aims to examine the relationship between occupational nutrition and employee productivity through a systematic literature review. The background of this research lies in the increasing attention to workplace health and the growing evidence that nutritional status can influence physical performance, cognitive function, and work outcomes. A total of 74 articles were initially identified from databases such as PubMed, ScienceDirect, Google Scholar, and Garuda, of which 12 met the inclusion criteria and were analyzed further. The findings indicate that adequate intake of macronutrients and micronutrients—particularly iron, protein, and B vitamins—correlates positively with productivity levels. Interventions such as nutritional education, iron supplementation, and structured meal programs at the workplace showed measurable effects in reducing absenteeism and fatigue while improving concentration and efficiency. The study concludes that occupational nutrition plays a vital role in supporting workforce performance and suggests its integration into workplace health policies. Theoretical and practical implications are discussed, along with recommendations for future research

Distribution transformers play a crucial role in delivering electrical energy from the distribution system to consumers to ensure power quality and supply continuity. However, in practice, overload conditions often occur due to increasing demand and load growth that exceed the transformer’s rated capacity. This situation can lead to reduced efficiency, increased power losses, and accelerated equipment aging. This study aims to analyze the performance of the CMY distribution transformer at PT PLN (Persero) ULP Labuan, which operates beyond its nominal capacity, and to propose an alternative solution through transformer mutation, namely the replacement of the existing unit with a transformer of more appropriate capacity based on load analysis results. The Least Square Method is employed to predict future load growth and determine the projected time when the transformer will again experience overload after the mutation. The results indicate that the existing 100 kVA transformer is overloaded and should be replaced with a 160 kVA unit. After the mutation, the loading percentage decreases significantly, the transformer’s lifespan is extended, and the reliability of the distribution system improves. Furthermore, the Least Square prediction suggests that the new transformer may experience overload again in future years if no further planning is carried out. Therefore, transformer mutation can be considered an effective and medium-term solution to enhance and maintain the reliability of the electrical distribution system within the operational area of PT PLN (Persero) ULP Labuan.

This study aims to develop a predictive model using linear regression to identify potential arrhythmias in the elderly based on electrocardiogram (ECG) data. Data were collected through observations at healthcare facilities from elderly patients with indications of arrhythmia, then preprocessed such as cleaning, normalization, feature selection, and outlier checking were carried out. The features used include PR interval, QRS duration, QT interval, and heart rate. The dataset was divided into training data (80%) and test data (20%) to build and evaluate the model. The training results showed that the model was able to predict the risk of arrhythmia with a Mean Squared Error (MSE) value of 0.15 and a coefficient of determination (R²) close to 1. Evaluation using a confusion matrix showed an accuracy of 76.19%, precision of 82.80%, recall of 76.19%, and F1 score of 72.70%. These results prove that linear regression can be used as an initial approach in the early detection of arrhythmias non-invasively in the elderly. This study provides a foundation for the development of ECG data-based clinical decision support systems and suggests future exploration of more complex models and integration with real-time monitoring technologies.

This study aimed to improve the speaking skills of sixth-grade students at SDN Negeri Kelapa Dua Wetan 01 Pagi in using the Simple Past Tense pattern (was/were) through the implementation of the Role Playing method. The research was conducted in two cycles involving 32 students as the subjects. The research method used was Classroom Action Research, consisting of the stages of planning, action implementation, observation, and reflection in each cycle. Data were collected through oral pre-tests and post-tests, as well as observations of students’ learning activities during the lessons. The results showed a significant improvement in students’ speaking skills. Their average score increased from 60.3 on the pre-test to 74.1 on the post-test. The percentage of students who achieved the Minimum Mastery Criteria also rose from 31% to 75%. The Role Playing method proved effective in enhancing students’ accuracy in using was/were, improving speaking fluency, and boosting self-confidence in oral communication. In conclusion, the application of the Role Playing method had a positive and significant impact on English learning outcomes among the sixth-grade students at SDN Negeri Kelapa Dua Wetan 01 Pagi. It is recommended that teachers continue to apply this method consistently, and that schools provide additional supporting facilities to optimize the learning process. For future studies, teachers and students are encouraged to expand the variety of role-play scenarios and include a control group to obtain a deeper and more comprehensive understanding of the effectiveness of the Role Playing method.