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Gesang Mulya Uga Wicaksana; Muh. Hanif

Jurnal Miftahul Ilmi: Jurnal Pendidikan Agama Islam 2026 STIKes Ibnu Sina Ajibarang

This qualitative study aims to explore the effectiveness of reward-and-punishment-based Islamic Religious Education in strengthening students' learning motivation at SMA Negeri 1 Bukateja using Travis Hirschi's social control theory framework. This research was conducted through a case study approach in one of the public high schools in Purbalingga Regency. Data were collected through interviews, participant observation, and documentation studies. The results of the study indicate that the implementation of rewards and punishments functions as a social control mechanism that is able to activate four elements of social bonds: attachment, commitment, involvement, and trust. The reward system in the form of praise, certificates, and gifts has been proven to strengthen the emotional bond between students and teachers, thereby increasing active participation and enthusiasm for learning. Meanwhile, educational punishments, such as reprimands, additional assignments, and community service, are able to build student commitment to rules and reduce indiscipline behavior.This study contributes to the development of Islamic education theory through a social control perspective and serves as a practical reference for Islamic Religious Education teachers in designing effective, fair, and sustainable learning systems.

Gunawati, Dita Novarina; Puspitasari, Cesaria Fitri; Arnyke, Errythrina Vinifera; Amalta, Luky; Damayanti, Cindy Audina

JAPSI (Journal of Agriprecision and Social Impact) 2026 CV. Komunitas Dunia Peternakan

Poultry agribusiness is a key driver of food security and rural economic development in developing countries. However, the sector remains vulnerable to infectious diseases such as avian influenza and Newcastle disease, which can disrupt production systems and supply chain continuity. Although previous studies have examined poultry disease control, biosecurity, and supply chain disruption, evidence on how risk and crisis communication supports outbreak management and resilience in developing-country poultry agribusiness remains fragmented. This study applied a systematic literature review (SLR) approach under PRISMA guidelines to synthesize risk and crisis communication strategies in poultry disease management and their contribution to supply chain resilience. Only seven relevant studies published between 2020 and 2025 met the inclusion criteria and were analyzed using the PICO framework. Quality assessment using the Mixed Methods Appraisal Tool (MMAT), combined with systematic data extraction in Microsoft Excel 2021, was conducted to improve methodological transparency and consistency. The novelty of this review lies in integrating communication strategies, enabling and constraining factors, digital tools, One Health perspectives, and public–private collaboration within a single analytical synthesis. The findings indicate that participatory, transparent, and coordinated communication can support disease prevention and crisis preparedness, particularly when strengthened by stakeholder trust, policy support, training, and accessible information channels. However, limited digital literacy, inadequate infrastructure, and cultural barriers may reduce communication effectiveness. Overall, this review highlights the need for inclusive communication systems and collaborative governance to strengthen poultry supply chain resilience in developing countries, while recognizing that the small evidence base limits broad generalization.

Rizkuna, Akhmat; Arifin, Dani Nur; Aldiyanti, Amani

JAPSI (Journal of Agriprecision and Social Impact) 2026 CV. Komunitas Dunia Peternakan

Heat stress is a major constraint in broiler production systems located in humid tropical climates, where high ambient temperature and relative humidity impair growth performance, feed efficiency, and animal welfare. This systematic review synthesizes peer-reviewed studies published between January 2015 and December 2025 evaluating environmental housing designs and cooling strategies for mitigating heat stress in broiler chickens. This systematic review followed the PRISMA 2020 guidelines and synthesized peer-reviewed studies retrieved from Scopus, Web of Science, and ScienceDirect, published between January 2015 and December 2025. From 500 records initially identified, 26 studies fulfilled the predefined eligibility criteria and were included in the qualitative synthesis. The findings demonstrate that evaporative cooling systems, tunnel ventilation, and automated climate control technologies consistently reduced indoor temperature (2–6°C) and improved body weight gain, feed conversion ratio (FCR), and mortality rates under hot-humid conditions. However, cooling efficiency was strongly influenced by ambient humidity, necessitating integrated and adaptive environmental control approaches. Smart sensor-based systems further enhanced microclimate stability and thermal uniformity within broiler houses. Beyond performance improvements, optimized environmental management reduced physiological stress indicators, including heterophil-to-lymphocyte ratios and corticosterone levels. Overall, integrated, humidity-adaptive, and energy-efficient cooling strategies are essential to sustain productivity, welfare, and climate resilience in tropical broiler production systems.

Sukatno; Armanto, Ony

Journal of Technology and Science 2026 Fakultas Sains dan Teknologi, Universitas Teknologi Surabaya

The rapid growth of Solar Power Plant (PLTS) installations in Indonesia faces efficiency challenges due to the continuously changing position of the sun. Fixed panel systems cannot absorb solar radiation optimally throughout the day. This study aims to evaluate and compare the efficiency of various solar tracking system methods developed over the last five years using a simple literature review approach. The research method was conducted by collecting, screening, and synthesizing secondary data from five reputable scientific journals using a synthesis matrix. The review results indicate that single-axis tracking systems increase power efficiency by 15% to 24.5%. Meanwhile, dual-axis systems achieve higher efficiency, ranging from 30% to 35%, by tracking both horizontal and vertical solar movements. In terms of control systems, astronomical algorithms are found to be more reliable in cloudy weather conditions than pure light sensors. However, the internal power consumption of the actuator motors remains a critical factor that can reduce the system's net energy gain. The implication of this study emphasizes the importance of shifting future research focus toward energy-saving algorithm optimization to maximize net power yield in dynamic solar panel implementations.

Andriyanti, Aulidina Dwi Nur; Aulia, Masyitah

Journal of Technology and Science 2026 Fakultas Sains dan Teknologi, Universitas Teknologi Surabaya

concern for pet owners. Consequently, cat owners seek equipment that can support and simplify their daily pet care activities. However, the busy schedules of many cat owners often make it difficult for them to provide consistent care, raising concerns about the neglect of their pets. To address this issue, this study developed an automatic cat feeding system for a cat enclosure using an experimental research method. The proposed system utilizes a load cell sensor, a Real-Time Clock (RTC), a servo motor, and an ATmega16 microcontroller. The load cell sensor is employed to determine the appropriate food portion based on the cat's nutritional requirements, while the RTC controls the feeding schedule by dispensing food twice a day at predetermined times. The experimental results demonstrate that the system was successfully implemented, with the load cell measurement exhibiting an error rate of 10.71% relative to the predefined set point. Furthermore, the servo motor effectively controlled the valve mechanism, achieving a maximum opening angle of 85 degrees. Overall, the developed system performed reliably and met the expected operational objectives..

Viky Zakiyatus Sariroh

Jurnal Mutiara Ilmu Akuntansi (JUMIA) 2026 Pusat Riset dan Inovasi Nasional

Digital technology advancements have greatly changed how small businesses manage their finances. This change is not only about recording transactions, but it also affects financial control, report preparation, and business decision making. Accounting Information System (SIA) came about as a solution to help small and medium businesses easily, organize, and accurately record their finances, as well as provide reliable financial information. This study aims to explain the role of the Accounting Information System in making it easier to manage the finances of small and medium businesses in the digital age, the benefits gained from using it, and the challenges faced during its implementation. The method used in this research is a literature review, which involves examining books, journals, and other related scientific publications, followed by analysis using a descriptive qualitative approach. Research findings show that using a digital-based Accounting Information System can improve business efficiency, speed up financial reporting, increase transparency, and make it easier for small and medium-sized businesses to get funding access. However, the implementation of the Accounting Information System still faces challenges such as a lack of technological understanding, limited infrastructure, and high implementation costs. Therefore, collaboration and support from various parties are needed to ensure the accounting information system is implemented effectively and sustainably in small and medium businesses.

Siti Muntari; Febriansyah, Febriansyah

JURNAL ILMIAH KOMPUTER GRAFIS 2026 UNIVERSITAS STEKOM

Early Marriage in Pagar Alam City is currently still quite high, the Pagar Alam Religious Court only relies on a recap of the number of cases per year to draw conclusions about the early marriage data. This method has limitations in classifying early marriage factors, so the Religious Court has difficulty in monitoring and controlling the occurrence of Early Marriage in Pagar Alam City. The purpose of this research thesis is to produce a classification system for Early Marriage factors using the K-Nearest Neighbor Algorithm to find out what factors influence the occurrence of Early Marriage, the method used in this study is the Cross Industry Standard Process for Data Mining (CRISP-DM) which has 6 stages, namely: Business Understanding, Data Understanding, Data Preparation, Modeling, Evaluation, and Deployment. The testing stage in this study uses Confusion Matrix and BlackBox Testing. The final results of this study indicate that the system can classify Early Marriage factors. The classification model built achieved an Accuracy of 94.12% and a Precise value of 85.71% and a Recall value of 100.00%, while testing using Black Box testing in the form of alpha obtained a feasibility value of 83.2%, so this system is very suitable for use.  

Nurul, Amelia; Nurul, Amelia; Nuralvianti, Regita

JURNAL ILMIAH KOMPUTER GRAFIS 2026 UNIVERSITAS STEKOM

Image Quality Assessment has become an important research area in computer vision due to the increasing use of digital imaging in medical, industrial, and remote sensing applications. This study conducted a Systematic Literature Review (SLR) using articles retrieved exclusively from the Scopus database. A total of fifteen Scopus-indexed articles were selected through the PRISMA process consisting of identification, screening, eligibility, and inclusion stages. The findings indicated that convolutional neural networks, transformer architectures, and no-reference approaches dominated recent studies because of their ability to capture complex visual features and improve evaluation accuracy. The application domain strongly influenced method selection, particularly in medical imaging, industrial quality control, and remote sensing. Deep learning methods achieved high performance but required large datasets and high computational resources. Overall, recent research trends shifted from traditional image enhancement toward artificial intelligence-based quality evaluation.

Atikah Nur Faizah; Sinta Julia Sahputri; Alfira Angelica Oktavia; Revi Ani Sundari; Aris Dwi Saputra +2 more

Jurnal Nusantara Berbakti 2026 Universitas Kristen Indonesia Toraja

This community-based project aimed to analyze the cash management system of the micro, small, and medium enterprise (MSME) Bakpia Juwara Satoe and develop recommendations to improve the company's financial performance. Cash management is a crucial but often overlooked aspect of MSME financial management, which can lead to cash flow problems, inaccurate record keeping, and poor management decisions. The methodology used included qualitative data collection through direct observation, in-depth interviews, and financial statement analysis. The project findings revealed that Bakpia Juwara Satoe lacked a functioning cash management system. There was no separation between cash receipts and disbursements, no standardized system for handling cash, and transaction recording remained manual and inconsistent. As part of the project, standard operating procedures (SOP) for cash management were developed, financial accounting training was conducted, and support was provided in creating simple cash flow statements. Following the implementation of these measures, record accuracy increased by 78%, and cash losses were reduced. It was determined that the implementation of efficient cash management contributed significantly to the improvement of Bakpia Juwara Satoe's financial performance.

Annisa Dwi Sandy; Febby Maharani; Sarah Adelia Hasibuan; Abdurrozzaq Hasibuan

VitaMedica : Jurnal Rumpun Kesehatan Umum 2026 STIKES Columbia Asia Medan

Industrial hygiene is a branch of public health research that aims to prevent illness and promote Industrial hygiene is an aspect of public health that prioritizes health protection measures for workers through the identification, evaluation, and control of various elements of the work environment that can cause health problems. The goal of implementing industrial hygiene is to prevent work-related illnesses and create a safe, healthy work environment that supports workers’ well-being. Industrial Safety and Health (IS&H) encompasses these various components, including risk identification, risk assessment, risk mitigation, and worker health monitoring, waste management, and emergency response planning. Workplace risks can include physical, chemical, biological, psychological, and ergonomic hazards. Hazard analysis is a crucial step in industrial hygiene as it helps identify and document potential health risks in the workplace. The hazard analysis process includes hazard identification, risk assessment, hazard prioritization, and risk control. The implementation of Occupational Safety and Health aims to ensure the protection of employees’ safety and health from potential hazards arising from work, while ensuring a safe and sustainable work environment. The implementation of OSH and environmental health also provides broad strategic benefits such as worker protection, cost efficiency, increased productivity, regulatory compliance, and enhanced corporate reputation.  

Rahman, M Arief; Marti Utari; Ferizka Tiara Devani; Fitrianto Puja Kesuma; Nurul Ilma Hasana Kunio

Sevaka : Hasil Kegiatan Layanan Masyarakat 2026 STIKES Columbia Asia Medan

This community service activity aimed to improve communication competence and customer experience among service actors in a higher education environment. The training was implemented at Gedung Aula KPA Politeknik Negeri Sriwijaya on 19 February 2026 under the theme of excellent service transformation based on integrity to support the institutional commitment toward an Integrity Zone and Corruption-Free Area. The method consisted of preparation, needs identification, interactive presentation, case-based discussion, service communication simulation, and reflective evaluation. The material emphasized service attitude, active listening, empathy, complaint response, and customer experience touchpoints in academic and administrative services. The activity showed that participants were able to identify the importance of consistent communication behavior, emotional control, and service recovery in creating positive experiences for students, lecturers, partners, and public stakeholders. The implication of this activity is the need for continuous service culture reinforcement through standard operating procedures, role-play-based training, and periodic evaluation of user satisfaction in higher education services.

Fathiha Zahra Damanik; Muktarruddin Muktarruddin

Tabsyir: Jurnal Dakwah dan Sosial Humaniora 2026 STAI YPIQ BAUBAU, SULAWESI TENGGARA

This study aims to analyze the management of young preacher (dai cilik) training in developing students’ preaching skills at SD IT Al-Washliyah Kelambir Lima Medan using a management function approach (*planning, organizing, actuating, and controlling*). This study employed a descriptive qualitative method, with data collected through in-depth interviews, participant observation, and documentation. The research informants consisted of the principal and teachers responsible for the young preacher training program. The collected data were analyzed systematically to describe the implementation of management functions in the young preacher training activities and their contribution to the development of students’ preaching skills. The results showed that planning was carried out through the development of a practice-based preaching curriculum, organizing was implemented through task allocation and regular scheduling, implementation focused on *public speaking* practice, sermon material preparation, and moral development, while evaluation was conducted periodically through student performance assessments. The implementation of this systematic training management contributed to the improvement of students’ preaching skills in cognitive, affective, and psychomotor aspects. These findings indicate that management functions applied in a structured manner play a strategic role in supporting the development of students’ preaching competencies at the elementary school level. Furthermore, continuous training provides opportunities for students to enhance their self-confidence, communication skills, and readiness to effectively deliver Islamic preaching messages

Angkin Dayu Safitri; Firdaus Firdaus; Pamungkas Stiya Mulyani

Al-Tarbiyah: Jurnal Ilmu Pendidikan Islam 2026 STAI YPIQ BAUBAU, SULAWESI TENGGARA

This study examines the effectiveness of integrating the demonstration method with audio-visual interactive multimedia to enhance Grade III elementary students' proficiency in sunnah rawatib prayers. A quasi-experimental design was employed with an experimental group (n=21) receiving demonstration-assisted multimedia instruction and a control group (n=22) undergoing conventional teaching. The primary instrument was a validated worship practice observation checklist (CVR=1; Cronbach's Alpha=0.873). Data analysis included the Shapiro-Wilk normality test, N-Gain calculation, and the Mann-Whitney U test. The experimental group achieved a posttest mean of 85.95 (100% mastery rate) compared to the control group's 74.32 (77.27% mastery). The experimental group's N-Gain score of 0.7146 (high category) substantially exceeded the control group's 0.4423 (moderate category). The Mann-Whitney U test yielded an Asymp. Sig. (2-tailed) value of < .001, confirming a statistically significant difference between both groups. These findings affirm that demonstration enriched by interactive multimedia scaffolding effectively constructs students' procedural knowledge of worship rituals and optimally engages multiple sensory modalities at the primary level.

Miko Dwi Saputra; Vika Rizkia; Sahiba Sahila

JURNAL ILMIAH TEKNIK INDUSTRI DAN INOVASI 2026 CV. ALIM'SPUBLISHING

Pressure sensitive labels (PSLs) made of polyethylene (PE) white are widely used in the packaging industry due to their flexibility, moisture resistance, and ease of application on various substrates. This study aimed to examine the effect of glossy and matte lamination on the tensile strength and color difference (ΔE) of PE white PSLs. An experimental method was employed, with tensile testing conducted using a universal testing machine (UTM) in accordance with ASTM standards and color measurement performed using a spectrodensitometer based on the CIE Lab system. The samples were divided into three treatment groups, namely no lamination, glossy lamination, and matte lamination, with ink coverage controlled at two design conditions, full ink and minim ink. The results indicated that lamination type significantly affected both the mechanical and visual characteristics of the labels. In the tensile strength test, the highest mean value was obtained by one treatment group, indicating superior resistance to tensile loading. In terms of color stability, higher ΔE values indicated greater color change and lower lightfastness, whereas lower ΔE values reflected better color retention. Overall, the findings show that the combination of lamination type and ink coverage influences the performance of PE white PSLs in both mechanical strength and color stability.

Ivander, Davin Danny; Khiroh, Siti Muhimatul

JURNAL ILMIAH TEKNIK INDUSTRI DAN INOVASI 2026 CV. ALIM'SPUBLISHING

Ketidaksesuaian kualitas pada proses assembly sepatu kulit kerap memicu siklus rework berulang yang menguras sumber daya waktu maupun biaya produksi secara signifikan. Penelitian ini mengkaji mekanisme pengendalian cacat yang diterapkan pada Product D-01 di Lini C PT XYZ, dengan menggunakan DMAIC sebagai kerangka perbaikan utama serta Pareto, P-Chart, Fishbone Diagram, 5 Whys, Failure Mode and Effects Analysis (FMEA), dan Cost of Quality (COQ) sebagai alat pendukung. Data primer bersumber dari catatan produksi internal perusahaan, pengamatan lapangan, dan wawancara terstruktur bersama pengawas produksi dan staf quality control. Pengukuran baseline menunjukkan bahwa Lini C menyumbang volume cacat paling tinggi di antara seluruh lini yang ada, dengan Product D-01 mencatat 10.487 pair cacat dari total output 80.387 pair, sehingga menghasilkan defect rate sebesar 13,05%. Distribusi Pareto mengidentifikasi wrinkle, incorrect colour, dan not straight sebagai tiga kategori cacat paling kritis. Penilaian FMEA menetapkan Risk Priority Number tertinggi sebesar 245 pada perilaku operator yang terburu-buru selama proses lasting dan brushing. Tindakan korektif mencakup pemasangan SOP visual, implementasi checklist QC pra-shift, verifikasi kondisi mesin secara rutin, dan penyediaan sampel referensi warna serta bentuk yang terstandar. Pemantauan selama dua periode berikutnya mengkonfirmasi penurunan defect rate secara bertahap menjadi 12,80% dan kemudian 11,65%, disertai penurunan estimasi biaya kegagalan internal dari Rp 2,36 juta menjadi Rp 1,86 juta per periode.

Luthfi Azhari; Wildan Maulana Assani Mualim; Muhammad Daffarezel Ramadhan; Pujo Santoso

JURNAL WILAYAH, KOTA DAN LINGKUNGAN BERKELANJUTAN 2026 Fakultas Teknik Universitas Cenderawasih

This study aims to synthesize empirical and theoretical literature on the Planning–Organizing–Actuating–Controlling (POAC) framework in public sector management, identify asymmetries among its functions, and propose a reconfiguration of POAC that is relevant to digital and collaborative governance. The study employs an integrative literature review by examining classical management literature, peer-reviewed journals, government regulations, and official governance indicators. Data were analyzed thematically based on the four POAC functions and synthesized across themes, using Indonesia during the 2021–2025 period as the empirical context. The findings reveal that planning and organizing functions have developed relatively well, while actuating and especially controlling remain persistent weaknesses. This condition is reflected in improvements in several formal governance indicators, including the Electronic-Based Government System (SPBE) Index, Indonesia’s ranking in the E-Government Development Index (EGDI), Unqualified Audit Opinions (WTP), and public service compliance ratings. However, during the same period, the Corruption Perceptions Index (CPI) declined. These findings indicate a gap between administrative achievements and substantive outcomes, consistent with the concept of means–ends decoupling in neo-institutional theory. The study contributes by bridging classical management theory with contemporary governance paradigms and proposing a Data-driven, Networked, Adaptive, and Participatory (DNAP) model of POAC. Practically, the results highlight the need to strengthen controlling functions and adaptive leadership to foster more effective, transparent, and outcome-oriented public governance.

Haryanto; Passalowongi, A. Alya; Hadira; Ramadhani, Salsabila; Rois, Adelia +2 more

Jurnal Mahasiswa Ilmu Kesehatan 2026 STIKes Ibnu Sina Ajibarang

Penelitian ini bertujuan untuk mengkarakterisasi tingkat toksisitas ekstrak etanol 60% daun trembesi (Samanea saman) terhadap larva Artemia salina melalui penentuan nilai LC₅₀ menggunakan metode Reed-Muench dan analisis probit. Penelitian ini merupakan penelitian eksperimental dengan rancangan post-test only control group design. Larva Artemia salina digunakan sebagai organisme uji dan dipaparkan pada berbagai konsentrasi ekstrak, yaitu 10 ppm, 100 ppm, 500 ppm, 1000 ppm, 5000 ppm, dan 10.000 ppm. Parameter yang diamati adalah jumlah kematian larva setelah 24 jam perlakuan. Hasil penelitian menunjukkan bahwa persentase kematian larva meningkat seiring dengan kenaikan konsentrasi ekstrak, yang mengindikasikan adanya hubungan dosis-respons. Perhitungan nilai LC₅₀ dengan metode Reed-Muench diperoleh sebesar 351,07 ppm, sedangkan analisis probit menghasilkan nilai LC₅₀ sebesar 468,05 ppm. Berdasarkan klasifikasi toksisitas Brine Shrimp Lethality Test (BSLT), nilai LC₅₀ tersebut termasuk dalam kategori toksik (30–1000 ppm). Hal ini menunjukkan bahwa ekstrak etanol 60% daun trembesi memiliki aktivitas toksisitas sedang terhadap larva Artemia salina. Dengan demikian, ekstrak ini berpotensi sebagai sumber senyawa bioaktif yang dapat dikembangkan lebih lanjut, namun diperlukan penelitian lanjutan untuk mengidentifikasi senyawa aktif serta mengevaluasi keamanan pada sistem biologis yang lebih kompleks.

Evi Dwi Hastri; Absori Absori

This study is motivated by the proliferation of regulations that facilitate the exploitative extraction of natural resources in Indonesia as a consequence of the penetration of neoliberal ideology, which deviates from the mandate of Article 33 of the 1945 Constitution of the Republic of Indonesia. The significance of this research lies in the strategic role of Muhammadiyah through the "Constitutional Jihad" movement in restoring state sovereignty over natural resources for the benefit of the public welfare. The study aims to analyze the philosophical foundations of Constitutional Jihad in reconstructing the vision of a Progressive Indonesia (Indonesia Berkemajuan) and to examine Muhammadiyah’s legal advocacy strategies in resisting the hegemony of liberal economic policies. The research focuses on how Muhammadiyah’s philosophical framework and litigation strategies are capable of correcting national energy policies, as reflected in Constitutional Court Decision Number 36/PUU-X/2012. This research employs a normative legal method using statutory, case, and theological-ideological approaches. The findings reveal that, philosophically, Constitutional Jihad represents the transformation of Al-Ma’un theology and the concept of Darul Ahdi wa Syahadah into a constitutional framework that integrates divine sovereignty with popular sovereignty. In terms of strategy, Muhammadiyah utilizes Public Interest Litigation supported by interdisciplinary expert collaboration and moral mobilization rooted in civil society. The analysis of Constitutional Court Decision No. 36/PUU-X/2012 demonstrates that Muhammadiyah’s advocacy successfully invalidated unconstitutional provisions of the Oil and Gas Law that had weakened state control, while simultaneously reaffirming the state's direct management function over natural resources. The study concludes that Constitutional Jihad constitutes an effective form of national ijtihad in reconstructing a progressive, sovereign, and socially just legal order in Indonesia.

Alfirmansyah Alfirmansyah; Insannul Kamil; Dwi Eri Yanti; Ummi Jayanti

JURNAL WILAYAH, KOTA DAN LINGKUNGAN BERKELANJUTAN 2026 Fakultas Teknik Universitas Cenderawasih

This study aims to formulate an engineering strategy for water quality management and pollution control in the Tiku Sub-watershed, North Musi Rawas Regency. The study used a descriptive approach by integrating selected technical data from a dissertation-based assessment with semi-structured interviews involving 20 key informants representing technical agencies, village and subdistrict governments, community leaders, artisanal and small-scale gold mining actors, farmers, and riverbank communities. The analysis focused on water quality status, water availability and demand, pollution sources, perceived impacts, implementation constraints, and priority interventions. The results showed that the Tiku Sub-watershed is under significant environmental pressure. The average pollution index was 6.65, indicating a moderately polluted status, while mercury, cadmium, phosphate, and ammonia were the dominant parameters of concern. Surface water availability remained relatively adequate at 45,842,699.79 m3/year, and the average Criticality Ratio was 0.266; however, the water pollution carrying capacity was poor. Interview results indicated that mercury use and processing waste from artisanal gold mining were the most urgent issue (35%), followed by land-cover change and riparian degradation. The recommended strategy combines mercury-free processing technology, alternative livelihood development, cross-sectoral supervision, riparian rehabilitation, and transparent water-quality monitoring. The findings imply that watershed engineering should integrate technical, institutional, and socio-economic interventions.

Hendro Damanra; Bambang Istijono

JURNAL WILAYAH, KOTA DAN LINGKUNGAN BERKELANJUTAN 2026 Fakultas Teknik Universitas Cenderawasih

Limited land availability is a major constraint in developing school infrastructure in active urban educational facilities. This study evaluates the classroom development plan at SDN 39 Lubuklinggau from the perspective of a planner, focusing on land limitation, functional needs, safety, constructability, and long-term building performance. A descriptive-evaluative approach was applied through technical observation, document review, alternative assessment, weighted scoring, and risk analysis. The results indicate that horizontal expansion is constrained by limited open space and may reduce internal circulation, student activity areas, and emergency space. Three alternatives were compared: horizontal expansion, building rearrangement, and a two-storey classroom scheme. The two-storey alternative obtained the highest score of 84, compared with 61 for rearrangement and 56 for horizontal expansion. However, its feasibility depends on further soil investigation, structural design, staircase and evacuation safety, utility coordination, construction phasing, and strict site safety control. The study recommends that the planner prioritize detailed site measurement, geotechnical investigation, detailed engineering design, construction safety planning, and post-construction functional evaluation. A vertical classroom strategy can be considered a rational solution for land-constrained schools when supported by accountable technical planning and integrated project control.