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This study aims to improve early childhood learning activities by utilizing vacant land as a nature center at Aisyiyah Bustanul Athfal 50 Kindergarten, Surabaya. The underlying problem is the lack of variety in early childhood learning, which tends to be limited to the classroom and the suboptimal use of the surrounding environment as a learning resource. This study used a qualitative approach with the Classroom Action Research (CAR) method, conducted in two cycles. The subjects were 15 children in Group B, characterized by active learning but limited focus on learning and environmental exploration. Data were collected through observation, interviews, and documentation, while data validity was tested through triangulation of sources and techniques. The results showed that children's learning activities increased significantly after the implementation of nature-center-based learning. Children became more active, enthusiastic, and were able to interact better with their environment and peers. Activities such as planting, watering, observing insects, and maintaining garden cleanliness provided meaningful and enjoyable learning experiences. In addition, the utilization of vacant land was an effective solution in creating a contextual and child-friendly learning atmosphere. The environment around the school was optimally utilized as a learning medium appropriate to the development of early childhood. This study concluded that the nature center significantly contributed to increasing children's learning activities. Therefore, this nature-based learning model can be recommended as an innovation in early childhood learning for other educational units. 

Perang siber adalah suatu kondisi konflik dengan menggunakan perkembangan teknologi informasi dan komunikas dimana menjadi sebuah fenomena sosial dalam relasi internasional yang menjadi masalah serius bagi bangsa-bangsa di dunia dalam membangun stabilitas internasional. Mmenghadapi variasi bentuk perang siber, dibutuhkan adanya proses pembangunan nasional berbasis keamanan siber/cyber security sebagaimana telah dilakukan oleh beberapa bangsa-bangsa di dunia. Perang siber sesungguhnya merupakan bentuk dari perang dunia ketiga yang sudah terjadi. Kekosongan dalam literatur hukum internasional membuat model serangan siber semakin menunjukkan kesiapannya untuk terlibat dalam konflik bersenjata. Konflik siber, yang melibatkan serangan terhadap sistem komputer dan jaringan digital, menimbulkan pertanyaan kompleks mengenai bagaimana prinsip-prinsip hukum humaniter yang ada dapat diterapkan dalam konteks konflik ini. Menggunakan metode penelitian yuridis normatif (legal  study  research) yang bersifat kualitatif dengan pendekatan perundang-undangan, konseptual dan kasus dari bahan primer dan sekunder. Tantangan HHi dalam mengatur konflik siber mulai dari definisi, pelacakan pelaku, perlindungan masyarakat, sampai penyesuaian hukum dengan teknologi baru. Diperlukan pembaruan hukum, peningkatan kerja sama antar negara, dan penguatan cara penegakan hukum agar perlindungan kemanusiaan tetap terjaga di zaman digital. HHI dapat diterapkan pada konflik siber tetapi perlu adaptasi melalui instrumen baru atau interpretasi progresif sebagaimana Kasus Rusia-Ukraina yang menjadi bukti urgensi penyesuaian hukum.

Drug stock-outs are an indicator of pharmaceutical management failure that directly affects patient safety and the quality of hospital services. Gatoel Hospital Mojokerto experienced an increase in the percentage of drug debt from 3.14% in January to 6.20% in July 2025, with 1,607 patients affected. This study aims to identify the factors causing drug stock-outs and formulate preventive strategies through the optimization of the Minimum-Maximum Stock Level (MMSL) system based on the Hospital Information System. A mixed-method approach was used, combining secondary data analysis (January–July 2025) and in-depth interviews. Fishbone analysis was applied to identify root causes, USG analysis to determine priorities, and SWOT analysis to formulate intervention strategies. Priority drug classification was carried out using the ABC-VEN method. The intervention involved implementing an MMSL pilot project for 150 drug items under Pareto category A. The analysis identified six dimensions of stock-out causes: man, materials, methods, machines, measurement, and environment. The highest priority issue was drug demand forecasting based on historical data (USG score: 125). SWOT analysis placed the organization in quadrant II, recommending a Weakness-Opportunities (WO) strategy. MMSL implementation was initiated through the development of SOPs and the entry of 150 priority drug items into the system. Drug stock-outs are caused by multifactorial issues that require systemic intervention. MMSL optimization has the potential to serve as a long-term solution, provided there is expanded coverage, strengthened human resource capacity, and comprehensive system integration.

This study aims to analyze the strategy of utilizing vacant spaces within airports to enhance non-aeronautical revenue through collaboration with Micro, Small, and Medium Enterprises (MSMEs). Given the growing importance of non-aeronautical revenue sources in the aviation industry, this research focuses on how airports can optimize underutilized spaces for commercial purposes. The research method applied is library research, where relevant literature, journals, and previous studies are reviewed to gain insights into successful strategies and best practices. The findings of the study indicate that the development of commercial spaces, such as fast-food tenants, retail outlets, and photo booths, can significantly enhance the passenger experience by providing convenient services and entertainment. Additionally, these developments offer a sustainable alternative revenue stream for airports, diversifying income beyond traditional aeronautical activities. The research also explores the role of the Value Proposition Canvas business model to assess the alignment between the value offered by these services and the needs of passengers. By applying this model, the study emphasizes the importance of understanding customer expectations and ensuring that airport services meet these demands. The analysis further highlights that successful implementation of these strategies requires careful planning, including collaboration between airport management, MSMEs, local governments, and sponsors. Building strong partnerships and ensuring mutual benefit are critical for maximizing the non-aeronautical revenue potential. The study concludes by suggesting that airports can leverage vacant spaces more effectively to not only boost revenue but also improve the overall passenger experience, contributing to the long-term sustainability and growth of the airport sector.

Empty oil palm bunches processed by palm oil mills in Indonesia are still abundant, reaching 56.35 million tons per year. Empty oil palm bunches contain around 40% cellulose, so they can still be used for various derivative products, one of which is composite products. The use of empty oil palm bunches as raw materials for Bioplastic production is a series of ongoing research, one of which is starch-cellulose blend, but until now it has not been successfully commercialized. The design of the starch cellulose blend bioplastic industry using palm oil as raw material produces two factories, namely a cellulose factory and a composite bioplastic factory. Both factories are designed in separate buildings. The separation of cellulose from TKKS uses a chemical method with soda, after mechanical treatment of size reduction. The industry is designed in 3 scales of production capacity, namely a large scale of 190,000 tons / year, medium 115.00 tons / year, and small 40,000 tons.year. The financial analysis of the three scales of production capacity as a whole is declared feasible. Profit margin is calculated at a minimum of 17.6%. The average payback period is between 3-5 years with an IRR of 24-49%. Analysis of the economic value produces an EScale index of 0.64 which indicates that the economic scale has been achieved. The economic scale of the starch cellulose blend bioplastic industry from TKKS is at a production capacity of 40,000 tons per year with a minimum supply of TKKS raw materials of 20,203 tons/year. At the smallest economic scale, the BEP is actually only 6627.4 tons/year, where this condition can be achieved because the industry has relatively small fixed costs.

This study examines the legal uncertainty regarding the status of adopted children as heirs within Indonesia’s pluralistic national inheritance legal system. The Civil Inheritance Law (KUH Perdata), Islamic Inheritance Law (KHI), and Customary Inheritance Law each regulate adopted children differently and incompletely, thereby creating a legal vacuum. that harms adopted children socially and emotionally. This study aims to analyze the weaknesses of these three legal systems and formulate a reconstruction of the status of adopted children based on substantive justice. Using a normative approach and the theories of legal reconstruction, substantive justice, and legal certainty, this study finds that reconstruction can be achieved through strengthening the mandatory will (wasiat wajibah), revising Article 209 of the KHI, and codifying and unifying national inheritance law through an Omnibus Law model. The parameters of justice used include the best interests of the child, public welfare, and non-discrimination. In conclusion, the reconstruction of the status of adopted children as heirs is urgently needed to fill the gaps in national inheritance law in a just manner.

This study aims to examine the effect of varying the length of oil palm empty fruit bunch (EFB) fibers on the mechanical properties and macrostructure of Palmfiber Reinforced Concrete (PRC) as an alternative to Glassfiber Reinforced Concrete (GRC). EFB fibers were selected due to their abundance, eco-friendliness, and potential to enhance the mechanical properties of lightweight concrete. The methods employed include flexural testing and macrostructural observation using five fiber length variations (3 cm, 4 cm, 5 cm, 6 cm, and 7 cm). The results show that a fiber length of 5 cm produced the highest flexural stress of 11.78 kg/cm², while a length of 4 cm yielded the highest modulus of elasticity at 162.2 kg/cm². Macrostructural observations revealed good bonding between fibers and matrix in most specimens, although performance differences were observed due to fiber distribution and manual compaction processes. In conclusion, fiber length affects the mechanical performance of PRC, yet production process optimization is necessary to achieve more consistent results.

This study aims to determine the process of making oil palm empty fruit bunch briquettes through variations in tapioca flour as an alternative material, through the stages of research which include briquette making, namely drying, carbonization and printing. Briquette characterization includes proximate tests, namely water content, ash content, calorific value and densit. From the results of the proximate test at a ratio of 91:9, it shows that the quality of oil palm empty  fruit bunch biochar briquettes with a moisture content of 7.07%, ash content of 8.769%, calorific value of 5850.2 cal/g and density of 0.55 g/cm3. The utilization of oil palm empty fruit bunches not only reduces waste, but also provides a solution for sustainable energy needs.