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Accurate wind turbine power curve modeling plays a crucial role in performance evaluation, energy yield estimation, and data-driven control strategies. However, actual power curves often exhibit non-linear behavior influenced by atmospheric variability, measurement noise, and SCADA anomalies, making conventional modeling approaches less effective. This study proposes an optimized logistic power curve model whose parameters are tuned using Particle Swarm Optimization (PSO) to improve predictive accuracy. The analysis uses the Wind Turbine SCADA Dataset from Kaggle, which undergoes extensive preprocessing including physical rule filtering, outlier detection with the Interquartile Range (IQR) method, anomaly removal, and smoothing of the power signal. A three-parameter logistic model is selected due to its ability to capture the typical S-shaped relationship between wind speed and power output. PSO is applied to identify optimal model parameters by minimizing the Mean Squared Error (MSE), utilizing 40 particles over 200 iterations. The optimized model achieves strong predictive performance with RMSE of 404.09, MAE of 179.96, and R² of 0.904 on the test set, indicating that more than 90% of the variability in actual power can be explained by wind speed. Residual analysis reveals heteroscedastic patterns and slight overestimation in mid-range wind speeds, yet overall model consistency remains high. Comparative evaluation against Linear Regression, Random Forest, and logistic modeling using curve_fit shows that the Logistic–PSO approach provides the most accurate and stable predictions. These findings demonstrate that combining logistic modeling with PSO offers an effective and robust method for data-driven wind turbine power curve optimization.

The main objective of this study is to examine whether agreements reached in electronic transactions through online shopping platforms comply with the fundamental principles of contract law. The principles tested include the principle of freedom of contract, the principle of consensualism, the principle of pacta sunt servanda, and the principle of good faith. In addition, this study also aims to understand the legal protection framework for consumers in the context of digital transactions. The methodology applied in this study is normative law, using an approach that focuses on legislation and a conceptual approach. The legal material used consists of primary, secondary, and tertiary legal materials. The collection of legal material was carried out through a literature study, which was then analyzed using deductive logic.Based on the results of the research and data analysis, it was concluded that agreements formed in electronic transactions through online shopping sites have fulfilled the principles of freedom of contract, consensualism, pacta sunt servanda, and good faith. Legal protection for consumers in e-commerce transactions has been adequately provided through the regulation of Law Number 11 of 2008 concerning Electronic Information and Transactions and Law Number 8 of 1999 concerning Consumer Protection.

This paper analyzes the relevance of the Frankfurt School’s Critical Theory in shaping public policy in Indonesia’s trade sector, particularly in the context of implementing Law Number 7 of 2014 on Trade. Using key concepts of Critical Theory—such as alienation, reification, instrumental rationality, and emancipation—this study evaluates how the structure of modern political economy can generate social inequality, the marginalization of small business actors, and the dominance of market-driven logic in national trade practices. A thematic analysis approach based on a literature review is employed to examine relevant scholarly works, including theories from Adorno, Horkheimer, Habermas, and contemporary critical theorists. The findings indicate that trade policies tend to be technocratic, efficiency-oriented, and insufficiently reflective of economic democracy, social justice, and empowerment principles for grassroots economic actors as mandated by the constitution. Such conditions reproduce structural injustices, particularly for MSMEs, which are often marginalized within a competitive trade system dominated by large capital. Therefore, more inclusive, participatory policy designs that are sensitive to structural inequalities are urgently needed. This study concludes that Critical Theory serves as a robust conceptual framework for analyzing power relations within the trade sector while also offering a transformative direction for policy development. Strengthening deliberative public spheres, enhancing MSME protection, and transforming power relations are essential steps toward achieving trade policies that are fairer, more humanistic, and emancipatory.

This research is aimed at examining the operational strategies carried out by PT. Samudera Sarana Karunia Dumai in ensuring the smooth operation of the Mt. Meghna Trader ship at Pelindo Dumai Port. The main focus of the research is directed at the identification and assessment of the effectiveness of operational strategies which include the planning, implementation, and control stages of various activities such as loading and unloading, logistics, coordination with relevant parties at the port, and operational risk management. This research also includes consideration of external factors, including port regulations, market conditions, available infrastructure, and supply chain dynamics. In addition, this study emphasizes the importance of continuous performance evaluation to ensure that ship operations can run according to safety standards, time efficiency, and procedural accuracy. A qualitative approach with a case study design is used and reinforced by quantitative data to get a more comprehensive analytical picture. Data was obtained through in-depth interviews, direct observations in the field, review of operational documents, and surveys involving internal and external parties who play a role in supporting the operational process of ships at the port.

Logical thinking is a fundamental competency for prospective teachers, as it supports systematic reasoning and professional decision-making. This study aimed to analyze the relationship between academic communication and emotional regulation with the logical thinking skills of students at the Faculty of Teacher Training and Education, Satya Wiyata Mandala University, Nabire, Central Papua. A quantitative correlational design was employed with 100 students selected through proportional random sampling. Data were collected using an academic communication questionnaire, an emotional regulation scale, and a logical reasoning test, and analyzed through Pearson correlation and multiple regression. The findings indicate that both academic communication and emotional regulation have positive and significant relationships with logical thinking skills, both partially and simultaneously. These results emphasize that logical thinking development in higher education requires the integration of cognitive, interpersonal, and emotional competencies.

This study aims to determine how to optimize container loading and unloading activities at PT. Pelindo Multi Terminal Sibolga Branch. Container loading and unloading activities are one of the main activities in port operations that greatly affect the efficiency and productivity of maritime logistics. PT. Pelindo Multi Terminal Sibolga Branch as one of the port service providers has an important role in ensuring the flow of goods in the West Coast of North Sumatra. This study is to analyze and identify factors that affect container loading and unloading performance as well as optimization strategies to improve time, costs, and resource utilization. The methods used in this study include field observations, interviews with related parties, and analysis of historical data on operational activities. The results of the study indicate that the main obstacles come from limited equipment, lack of coordination between parties, and low utilization of information technology. Suggested optimization efforts include the addition of heavy equipment for unloading, increasing workforce training, and digitalizing monitoring and scheduling systems.  

Production quantity planning is a crucial component in the bottled water industry (AMDK) to ensure that consumer demand is met efficiently. Inaccuracies in determining the amount of production can lead to overproduction and supply shortages, which ultimately leads to increased operational costs and decreased customer satisfaction. This study applies the Sugeno fuzzy logic method to predict the amount of production based on two main variables, namely weekly demand and raw material stock. The analysis stages include the fuzzification process, the preparation of the rule base, inference using the zero-order Sugeno method, and defuzzification using the Weighted Average (WA) method. The data used is synthetic data that represents the operational conditions of the medium-scale bottled water industry. The results show that the Sugeno fuzzy system is able to produce production predictions that are adaptive and responsive to fluctuations in demand and stock availability. This model provides consistent and stable output, so it can help companies in determining the optimal production amount. These findings confirm that Sugino's fuzzy approach can be an effective decision support tool in bottled water production management, especially in the face of uncertainty and variability in market demand.

This study aims to analyze the information technology (IT) infrastructure of PT RedEx using SWOT and McFarlan Strategic Grid methods to evaluate internal and external factors affecting IT performance and its strategic positioning. The SWOT analysis identifies strengths, weaknesses, opportunities, and threats, while the McFarlan Grid maps IT systems into four quadrants: Strategic, High Potential, Key Operational, and Support. Data were collected through observation, interviews, and documentation. The results show that PT RedEx’s IT infrastructure supports operational activities but lacks real-time integration across branches. Based on the McFarlan analysis, most systems are in the Key Operational and Support quadrants, indicating a focus on daily operations rather than strategic innovation. Recommendations include system integration through cloud computing, digital transformation, and IT human resource development. The study provides insights into strategic IT planning for logistics companies in the digital era.

In the fast-moving fashion retail industry, supply chain efficiency is a key factor in operational success. Heybeb Factory Outlet, as one of the retail business actors, faces challenges in managing the flow of goods from upstream to downstream, particularly in balancing demand between offline (physical stores) and online (e-commerce/marketplace) channels. This proposal aims to design and analyze the logistics workflow starting from goods ordering (restocking) from the central warehouse, the goods receiving process, rigorous Quality Control (QC) procedures, storage in a dedicated transit warehouse, and the stock distribution mechanism (stock split) for the two sales channels. The main issues identified include the risk of overselling in one channel while stock accumulation occurs in another, as well as the potential for defective items to pass through due to an unstructured QC process. This study employs a descriptive qualitative approach by mapping out an ideal Standard Operating Procedure (SOP). The expected outcome is the development of an integrated inventory management system capable of minimizing return rates caused by defective items and maximizing inventory turnover through accurate stock allocation between online and offline divisions.

Acute Respiratory Infections (ARI) in the working area of Mulyorejo Public Health Center, where an aluminum factory is located, rank first among the ten most common diseases. This study aims to analyze the influence of sociodemographic characteristics and PM2.5 exposure on ARI complaints in the aluminum factory area of Payageli Village, Deli Serdang Regency. The cross-sectional observational study involved 160 housewives living within a radius of 10–1500 meters from the factory’s chimney. The analysis included univariate, bivariate, and multivariate methods. Results showed that 58.1% of respondents experienced ARI symptoms in the past month. The average ambient (outdoor) PM2.5 concentration measured from three sampling points was 12.3 µg/m³, which did not exceed the WHO standard (<15 µg/m³). The highest concentration was recorded in the southern direction (15.5 µg/m³). Bivariate analysis indicated that education (p = 0.010), direction of house location (p = 0.001), and indoor PM2.5 concentration (p = 0.006) were significantly associated with ARI. Multivariate logistic regression analysis showed that the most dominant factor influencing ARI was indoor PM2.5 concentration (p = 0.039), followed by education (p = 0.013) and direction of house location (p = 0.001). This study provides a scientific basis for air quality control and housing environment improvement to reduce the risk of environmentally related diseases in industrial zones.

The purpose of this study is to investigate the strategic role of air transportation management in Military Operations Other Than War (MOOTW), particularly in archipelagic contexts such as Indonesia, where rapid humanitarian response, territorial surveillance, and civil–military cooperation are essential for resilience. By applying a Systematic Literature Review (SLR), this article synthesizes findings on humanitarian logistics, technological transformation, and policy frameworks for strengthening national defense readiness. Design/methodology/approach – This study employs a qualitative Systematic Literature Review (SLR) methodology guided by PRISMA principles, analyzing 30 scholarly contributions from 2009–2025, including international peer-reviewed journals, Routledge and Springer volumes, arXiv preprints, and Indonesian academic publications.Results highlight that strategic air  transportation is indispensable for disaster relief, medical evacuation, and supply delivery in archipelagic nations. The adoption of AI, machine learning, UAVs, and reinforcement learning has enhanced responsiveness and equity in humanitarian supply chains. However, persistent challenges include aging fleets, interoperability constraints, and fragmented civil–military coordination. The study underscores the need for modernization of air assets, institutionalized civil–military collaboration, and integration of AI-based routing and command systems. Strengthening these aspects can enhance Indonesia’s resilience and preparedness in MOOTW scenarios. This article uniquely bridges global research on data-driven air power with Indonesian defense perspectives, proposing a scalable strategic framework for air transportation management that advances archipelagic resilience.

The position of judges in the process of proving civil cases occupies a fundamental role in upholding justice and legal certainty within the Indonesian judicial system. This study aims to examine the judge’s position, duties, and authority in the evidentiary process of civil cases through a literature review focusing on doctrines and jurisprudence. Using a normative juridical method with a library research approach, this paper analyzes legal theories, statutory provisions, and judicial precedents that regulate evidentiary procedures in civil law. The findings show that a judge is not merely a passive law enforcer but an active truth-seeker who must interpret and assess evidence based on principles of fairness, propriety, and moral values. The judge’s discretion in evaluating evidence reflects the responsibility to harmonize formal legal norms with the pursuit of substantive justice. Jurisprudence demonstrates that judges play an essential role in shaping evidentiary standards and ensuring that court decisions reflect the ideals of justice and legal certainty. The study concludes that the authority and independence of judges are crucial in realizing a fair trial, as they ensure that decisions are based on verified facts, logical reasoning, and moral responsibility. Strengthening the professionalism and integrity of judges is necessary to guarantee that the evidentiary process in civil proceedings fulfills the principles of equality before the law and promotes justice in society. 

This study aims to analyze the role and strategies of introducing mathematical proofs appropriately for students, as well as to describe their contribution to enhancing logical, critical thinking, and understanding of mathematical concepts. The method used is library research with a descriptive qualitative approach through the analysis of various current scientific literature relevant to mathematics learning and education. The results of the study indicate that mathematical proofs not only function as a tool for verifying the truth of a statement but also as an epistemological process that develops deductive, argumentative, and reflective reasoning skills in understanding the structure and relationships of mathematical logic. Effective introduction strategies include the use of visual representations, collaborative learning, linguistic scaffolding, and the application of a gradual approach from informal argumentation to formal deduction. The approach has been proven to enhance students conceptual understanding, argumentative skills, and logical awareness. The implication is that proofs need to be systematically integrated into mathematics learning in secondary schools to strengthen Higher Order Thinking Skills (HOTS) and develop a scientific mindset in accordance with the principles of the Merdeka Curriculum

This research investigates the impact of the work environment and workload on job satisfaction among employees in the Operational Logistics Division at Pos Indonesia, Surabaya Main Branch. A quantitative method was applied with a total of 45 respondents selected through a saturated sampling technique. Data were obtained using interviews, questionnaires, and observations based on a Likert scale, and analyzed using Partial Least Square (PLS). The results reveal that the work environment has a positive and significant effect on job satisfaction, while workload has a negative and significant effect. These findings indicate that an improved work environment increases employee job satisfaction, whereas higher workloads tend to decrease it.

Learning mathematics not only focuses on mastering concepts and calculation skills, but also requires creating a conducive learning environment so that students can think critically, logically, and creatively. A conducive learning environment plays a crucial role in fostering student motivation and active engagement, making the success of the learning process highly dependent on the strategies implemented by the teacher. This research aims to describe mathematics teachers' strategies in creating a conducive learning environment thru the application of active and contextual learning strategies. The method used is library research, which involves collecting and reviewing various scientific sources such as books, journals, and academic articles relevant to the research topic. The research results indicate that active learning strategies are able to increase student participation, strengthen reasoning abilities, and foster learning motivation. Teachers play an important role as facilitators, motivators, mediators, and evaluators, directly influencing the learning climate in the classroom. Contextual learning strategies like REACT (Relating, Experiencing, Applying, Cooperating, Transferring) have proven effective in connecting mathematical concepts with students' real-life experiences and creating a fun and meaningful learning environment. In addition, humanistic classroom management, the use of technology, and adapting learning to students' different abilities are supporting factors in achieving a conducive learning environment. The implications of this research indicate that the success of mathematics learning is not solely determined by the methods used, but also by the teacher's ability to build positive relationships with students and create an interactive, adaptive learning environment that optimally fosters students' potential development.

Purpose –The objective of this research is to analyze the role of advanced materials as a foundation for technological innovation and as a strategic element in strengthening the national defense system. The study focuses on the interrelationships between policy aspects, industry dynamics, and theoretical frameworks to explain the urgency of adopting advanced materials in Indonesia. Design/methodology/approach –This study uses a conceptual approach based on a systematic literature review (SLR) by examining reputable international publications published by Elsevier, Springer, Wiley, Taylor & Francis, IEEE, ACM, ScienceDirect, SAGE, JSTOR and DOAJ as well as national literature indexed by SINTA. The analysis was conducted using a thematic synthesis method that combines regulatory and policy dimensions, empirical data related to budget trends and industrial implementation, and theoretical models including diffusion of innovation, technology acceptance models, and behavioral reasoning theory. Findings –Studies have shown that advanced materials such as lightweight composites, high-entropy materials, smart materials, and functional coatings have a significant role in strengthening military resilience, reducing dependence on imports, and improving the efficiency of defense logistics. However, the adoption of these materials still faces obstacles such as high production costs, limited human resources, and the vulnerability of critical mineral supply chains, which are heavily influenced by global geopolitical dynamics. Practical implications –This study emphasizes the importance of strengthening national research, integrating the defense industry into the DEFEND ID ecosystem, and international collaboration to accelerate technology transfer. Mapping the critical mineral supply chain also needs to be a strategic priority to ensure the sustainability of defense materials development. Originality/value –This article offers a novel contribution through the simultaneous integration of policy perspectives, empirical data, and theoretical frameworks in the context of advanced materials development in Indonesia, an aspect that has rarely been comprehensively explored in previous studies.

This study examines the implementation of Green Disaster Management (GDM) policies by the Surabaya City Disaster Management Agency (BPBD) as a means to enhance disaster resilience through environmental sustainability. The research analyzes the integration of GDM principles across all phases of the disaster cycle pre-disaster, during response, and post-disaster recovery. Data was collected through in-depth interviews with key informants, participant observation, and document analysis at BPBD and pilot project sites, including mangrove conservation areas, green emergency posts, and eco-friendly reconstruction sites. The findings indicate that Surabaya has demonstrated significant commitment to embedding sustainability into disaster management through community education, environmentally friendly logistics, and eco-based mitigation measures. Nonetheless, challenges persist, such as limited funding, resistance from developers, logistical constraints, and societal perceptions favoring immediate response over environmental considerations. During disaster response, innovations such as solar-powered emergency equipment and waste segregation practices are being adopted, but their widespread application remains hampered by resource limitations. Post-disaster, efforts in eco-friendly reconstruction and reforestation programs have shown promising results but require enhanced public awareness and long-term maintenance. The success of GDM implementation depends on effective inter-agency coordination, political commitment, and community engagement. Despite progress, hurdles related to budget constraints, social resistance, and knowledge gaps fully hinder the adoption of green approaches. This study highlights the importance of strategic collaboration, policy support, and community participation to mainstream sustainability in disaster management continuously. Strengthening these aspects will not only improve Surabaya's disaster resilience but also contribute to sustainable urban development aligned with global frameworks such as the Sendai Framework for Disaster Risk Reduction.

This study explores the dissemination of Sufi teachings through the TikTok account @Al.Amiin.id, highlighting how visual aesthetics, symbolism, and narrative techniques play a role in conveying spiritual messages to young audiences in the digital era. Using a qualitative approach with a critical case study strategy, this research analyses how elements such as colour, light, music, and spiritual metaphors are combined with reflective emotional narratives to preserve the depth of Sufi teachings. Drawing on Stig Hjarvard’s perspective on the mediatization of Religion, the study examines how social media not only functions as a channel for message dissemination but also reshapes religious practices and experiences. The findings reveal that @Al.Amiin.id successfully utilises the logic of digital media—such as short duration, visual aesthetics, algorithms, and trends—as instruments to present Sufism in the form of personal and easily comprehensible micro-narratives. This strategy demonstrates that Sufi preaching undergoes a process of mediatization, in which spiritual values are not merely transmitted but also reconstructed to align with the consumption patterns and cultural sensibilities of digital generations. The study further emphasises that despite the risks of commodification and simplification, Sufi preaching on social media can still preserve its spiritual depth through adaptive approaches. This research contributes to the study of how religious practices are transformed by digital media, offering a model of Sufi preaching that is communicative, inclusive, and relevant in the era of algorithms.

Scientific writing plays an important role in developing knowledge and shaping the intellectual character of students. Through academic writing, students not only learn to organize ideas systematically but are also trained to think critically, analytically, and reflectively. This study employs a literature review method to examine the concepts, processes, and originality of scientific work based on academic theories and established scholarly standards. The findings indicate that writing scientific papers is not merely an academic requirement but also a reflection of logical, objective, and ethical thinking. A high-quality scientific work must demonstrate originality, intellectual honesty, and the proper application of scientific methods—from problem formulation and data collection to analysis and conclusion. In addition, scientific writing should contribute to the development of knowledge and offer solutions to current issues in society. Therefore, higher education institutions need to strengthen students’ scientific literacy, academic writing skills, and understanding of research ethics. These efforts are essential for fostering an academic culture that upholds integrity, encourages innovation, and prepares young scholars to become responsible and competitive individuals.

The advancement of digital technology has transformed children's media consumption patterns, marked by the growing use of short video content such as TikTok, YouTube Shorts, and Instagram Reels. This study aims to explore the psychological impacts of short video addiction on elementary school-aged children, focusing on cognitive, affective, and social aspects. Using a phenomenological qualitative approach, data were collected through in-depth interviews, observation, and documentation involving 10 children, 7 parents, and 4 teachers from two elementary schools. The findings indicate that children who intensively access short videos (more than two hours per day) experience reduced concentration, emotional instability, and social withdrawal. These results were analyzed using theoretical frameworks from Piaget (cognitive), Krathwohl (affective), Erikson and Bandura (social), and Young’s digital addiction model. The main conclusion reveals that short video addiction negatively affects children's developmental tasks, including logical thinking abilities, emotional regulation, and social skills. Therefore, digital literacy-based interventions and active supervision by parents and teachers are essential to prevent the long-term detrimental impacts on children's psychological development.