Journal of Engineering and Applied Technology
Scripta Technica: Journal of Engineering and Applied Technology is a peer-reviewed scientific journal that focuses on the dissemination of high-quality research in the fields of engineering and applied technology. It serves as an open platform for researchers, engineers, practitioners, and academics to publish innovative studies, technical developments, and theoretical contributions that address real-world engineering problems and technological advancement.
Socialization of Employee Attendance System Prototype Design Using the Prototyping Method at the South Sumatra Provincial Archives Office
This study aims to design a prototype of a digital-based employee attendance system using the Prototyping method at the South Sumatra Provincial Archives Office as an effort to improve the accuracy, efficiency, and transparency of attendance administration. The background of this study is based on the problems of manual attendance, which is prone to recording errors, data manipulation, and requires a long time in the report recapitulation process. The research method used is applied with stages of gathering requirements through observation and mockup interface design, prototype development, and functional testing using Black Box Testing. The results show that the designed attendance system prototype is capable of performing its main functions optimally, particularly in the geolocation validation feature to ensure that employees are present within the office radius, the prevention of double attendance, and the automation of attendance data recording. The discussion confirms that the application of the Prototyping method facilitates the adjustment of the system to user requirements from the early stages of development. In conclusion, the resulting attendance system prototype is considered feasible as the basis for developing the final system to support more effective and accountable personnel management.
Attendance System, Prototyping Method, Digitization, Archives Office, User Interface
Copyright (c) 2025 Derta Octara, Andri Andri (Author) https://creativecommons.org/licenses/by/4.0
Vernacular Islamic Architecture as a Manifestation of Social and Spiritual Sustainability in Local Muslim Communities
Vernacular Islamic architecture represents the connection between Islamic values and local wisdom that developed in the social and cultural context of Muslim communities. This study aims to examine vernacular Islamic architecture as a form of social and spiritual sustainability of local Muslim communities through a conceptual approach. The research method used is non-empirical qualitative with a critical literature review of scientific sources in the form of reputable journals, dissertations, and academic publications relevant to Islamic architecture, vernacularity, and sustainability. The results of the study show that vernacular Islamic architecture not only functions as a space for worship, but also as a medium for collective identity formation, strengthening social relations, and internalizing spiritual values in everyday life. The discussion reveals that sustainability in vernacular Islamic architecture is holistic because it encompasses social, spiritual, cultural, and ecological dimensions that are integrated into community spatial practices. The conclusion of this study affirms that vernacular Islamic architecture has a strategic role in maintaining the continuity of values and the life of local Muslim communities amid the dynamics of social change and modernization..
Vernacular Islamic Architecture, Social Sustainability, Spiritual Sustainability, Local Wisdom, Local Muslim Communities.
Copyright (c) 2025 Mohamad Alfian Nur Aziz, Imam Kharomen (Author) https://creativecommons.org/licenses/by/4.0
Colonial Architecture in Madiun City: Analysis of Style, Building Systems, and Tropical Adaptation from the Indische Empire to Nieuwe Bouwen
Colonial architecture in Madiun City reflects a complex interaction between political power, technological development, and environmental adaptation during the Dutch colonial period. As an administrative center of the Madiun Residency, the city experienced architectural transformation from the monumental Indische Empire style to the more rational and functional Nieuwe Bouwen approach. This study examines architectural styles, building systems, and tropical adaptation strategies embedded in colonial buildings in Madiun. The findings indicate that early colonial architecture emphasized symmetry, massive walls, and classical proportions, while later developments adopted reinforced concrete structures and simplified forms. Despite technological modernization, colonial buildings consistently integrated passive design strategies, including wide verandas, high ceilings, large openings, and strategic orientation to optimize ventilation and thermal comfort. The use of local materials combined with European construction techniques demonstrates a pragmatic response to tropical climate conditions. These architectural characteristics position colonial buildings in Madiun as valuable historical artifacts and as relevant references for contemporary tropical architecture. Understanding their design principles contributes to heritage conservation efforts and offers insights into sustainable architectural practices rooted in historical experience.
colonial architecture, Madiun City, Indische Empire, Nieuwe Bouwen, tropical adaptation.
Copyright (c) 2025 Uswatun Hasanah (Author) https://creativecommons.org/licenses/by/4.0
The Meaning of Yogyakarta's Imaginary Axis in the Perspective of Landscape Architecture
The Imaginary Axis of Yogyakarta is a conceptual line that connects Mount Merapi, the Yogyakarta Palace, and the Southern Sea, which carries philosophical, cultural, and ecological values in shaping the urban space. This study aims to examine the meaning of the imaginary axis from the perspective of landscape architecture, focusing on the relationship between natural elements, urban spatial planning, and Javanese cultural symbolism. The methods used include literature review, spatial analysis, and a descriptive qualitative approach to urban landscape morphology. The research results indicate that the imaginary axis is not merely an urban planning orientation, but also a representation of Javanese cosmological harmony that integrates humans, nature, and spirituality. From the perspective of landscape architecture, this axis demonstrates visual, ecological, and philosophical connectivity that creates Yogyakarta's landscape identity as a cultural city. Thus, the imaginary axis holds deep significance for spatial balance, the value of local wisdom, and provides inspiration for the development of sustainable architecture and landscapes in the future.
Imaginary Axis, Javanese Architecture, Landscape Architecture, Yogyakarta.
Copyright (c) 2025 Sandi Adji Pratama (Author) https://creativecommons.org/licenses/by/4.0
Analysis of Material Usage in the Warak Kayu Microlibrary Building in Semarang
In the process of constructing a building, material selection is an important aspect that must be carefully considered by architects or designers. Materials not only influence the aesthetic value of a building but also play a role in determining building quality and environmental sustainability. This study analyzes the Microlibrary Warak Kayu designed by SHAU (Suryawinata Haizelman Architecture Urbanism), located on Dr. Sutomo Street, Semarang. The purpose of this research is to identify the types of materials used in the Microlibrary Warak Kayu, both in exterior and interior elements, so that it can serve as a reference for other public building designs. The research employs a qualitative descriptive method with a phenomenological approach. Data were obtained through field observations and supported by literature studies from various sources. The results indicate that all building elements of the Microlibrary Warak Kayu use wood materials certified by the Timber Legality Verification System (SVLK), with most also certified by the Forest Stewardship Council (FSC). These materials were prefabricated by PT. Kayu Lapis Indonesia and derived from processed factory wood waste. The use of sustainable materials contributes to environmental preservation and helps reduce the carbon footprint of the construction industry.
Material, Environmental Sustainability, Wood, Architecture.
Copyright (c) 2025 Misbahudin Efendy, Kridha Agishna Mukti (Author) https://creativecommons.org/licenses/by/4.0
Literature Review on Efforts to Optimize Mold Change Time Using SMED (Single Minute Exchange of Dies)
This study presents a qualitative literature review on efforts to optimize mold changeover time through the implementation of the Single Minute Exchange of Dies (SMED) method in manufacturing industries, particularly injection molding processes. The review synthesizes findings from national and international studies published between 2020 and 2025 to identify common problems, implementation strategies, and performance impacts of SMED. The results indicate that prolonged mold changeover time is a major contributor to machine downtime and productivity loss, mainly caused by non-standardized procedures, poor preparation, and the dominance of internal setup activities. The implementation of SMED consistently demonstrates significant reductions in setup time by separating internal and external activities, simplifying work steps, and standardizing operating procedures. Furthermore, the literature reveals that SMED contributes to improvements in production output, equipment utilization, cost efficiency, and process stability. The findings also highlight the importance of operator involvement and managerial commitment to ensure sustainable results. Overall, this review confirms that SMED is a flexible and effective approach for enhancing manufacturing performance and supporting continuous improvement initiatives.
SMED, mold changeover time, injection molding, setup time reduction, manufacturing efficiency.
Copyright (c) 2025 Dionisius Tegar Cahyadi, Wijayanto Wijayanto, Riska Anggun Sucianingrum, Agus Yoga Nafasa, Muhamad Annur, Yudi Prastyo (Author) https://creativecommons.org/licenses/by/4.0
Integration of Sustainable Architecture Principles and Tropical Spatial Planning in Urban Cafe Design: A Case Study of Tanatap Wall Garden in Semarang
This study examines the integration of sustainable architecture principles and tropical spatial planning in the design of an urban café through a case study of Tanatap Wall Garden Semarang. The research employs a qualitative descriptive method with a case study approach, supported by field observations, spatial analysis, and literature review. The findings reveal that sustainable design strategies are implemented through passive design approaches, including natural ventilation, optimal daylight utilization, climate-responsive spatial zoning, and the extensive use of bioophilic elements. Tropical spatial planning is reflected in the transition between outdoor, semi-open, and indoor spaces, which enhances thermal comfort and reduces reliance on mechanical systems. These design strategies not only improve environmental performance but also shape visitors’ spatial experience, comfort, and sense of place. The integration of sustainability, tropical design, and user experience demonstrates that urban cafés can function as environmentally responsive public spaces. This study contributes to architectural discourse by highlighting the potential of café design as a medium for sustainable and climate-adaptive architecture in tropical urban contexts.
sustainable architecture, tropical spatial planning, urban café, bioophilic design, user experience.
Copyright (c) 2025 Mutiara Fajar Sholehah, Zakiyah Wardah Isfahani (Author) https://creativecommons.org/licenses/by/4.0
Analysis of the Causes of Discrepancies Between Inventory and Actual Items: A Case Study of Company X Using the RCA Method
This study examines stock accuracy performance, customer complaints, and the alignment between demand and fulfillment within a six-month operational period in order to identify the dominant factors contributing to inventory discrepancies. The findings show that variations in stock accuracy are closely related to nonstandard placement practices, non-real-time documentation, and inconsistencies in material movement across warehouse areas. Customer complaint records indicate recurring issues regarding wrong motif, wrong color, and shortage of delivered units, demonstrating that operational errors still play a substantive role. Additional analysis of demand and fulfillment across multiple ceramic sizes highlights that several product categories experience recurring gaps between requested and supplied quantities, particularly in the 60×60 WB variant. Root cause identification through a Pareto approach further reveals that human error, mixed materials in pallets, and misalignment between actual transfer and recorded data represent the largest contributors to overall discrepancies. These insights underscore the importance of strengthening warehouse discipline, enhancing personnel capability, and standardizing control mechanisms to ensure reliable inventory performance. The study concludes that structured interventions and continuous monitoring are required to maintain a stable and accurate stock management system.
Stock accuracy, Inventory management, Warehouse operations, Root cause analysis, Demand fulfillment.
Copyright (c) 2025 Muhammar Zidan Inprasepta, Aldi Allaudin, Nandana Malik Prayata, Anugrah Ramadhani Hidayah Warman, Yudi Prastyo (Author) https://creativecommons.org/licenses/by/4.0
Energy Efficiency in Industrial Telecommunications Systems to Improve Operational Efficiency in Indonesia 2022-2024
This study analyzes energy efficiency in the Indonesian telecommunications industry during 2022–2024 by examining the interaction between infrastructure expansion, green technology investment, and network capacity enhancement. The findings indicate that the uncontrolled increase in the number of base transceiver stations tends to reduce energy efficiency when optimization measures are not implemented, particularly in regions with fluctuating traffic demand. In contrast, capital expenditure allocated to green technology demonstrates a strong positive effect on energy performance, as renewable-based systems, modernized equipment, and automated energy management configurations significantly reduce operational electricity consumption. Network capacity enhancement also contributes to operational efficiency by distributing traffic loads more effectively, minimizing equipment strain, and stabilizing service performance across diverse geographical areas. The combined impact of these factors highlights the need for structured modernization and energy-aware planning within the sector. Strengthening energy efficiency not only lowers operational costs but also supports national digital transformation goals through more resilient, reliable, and sustainable telecommunications infrastructure. These results emphasize that energy-efficient strategies are essential for improving long-term operational performance in Indonesia’s telecommunications industry.
Energy Efficiency, Telecommunications Infrastructure, Green Technology Investment, Network Capacity, Operational Performance.
Copyright (c) 2025 Septian Rizky Firdaus, Muhammad Syuaibi Chuluq Syuhadah (Author) https://creativecommons.org/licenses/by/4.0
Integration of Batik Ornaments in Islamic Architecture and Spatial Design as a Reinforcement of Indonesian Cultural Identity
This study examines the integration of batik ornamentation into Islamic architectural and spatial design as a culturally grounded strategy to reinforce Indonesia’s national identity. Batik, as a symbolic visual language deeply rooted in Indonesian heritage, possesses philosophical depth that aligns with the spiritual and aesthetic principles of Islamic art. The research synthesizes literature on architectural identity, symbolic ornamentation, and cultural adaptation to trace how batik motifs can be meaningfully incorporated into façades, interiors, and urban religious environments. Findings reveal that successful integration requires careful selection of motifs, technological adaptation through digital processing, and collaborative interpretation between designers, scholars, and religious authorities to maintain symbolic coherence. Hybrid design approaches enable traditional motifs to coexist with contemporary Islamic architectural expressions without losing their cultural essence. This paper argues that integrating batik into Islamic architecture not only enriches visual harmony but also strengthens collective cultural consciousness among communities. Ultimately, batik-based architectural design presents a viable model for developing culturally resonant, spiritually grounded, and contextually relevant Islamic spaces in Indonesia.
Batik ornament, Islamic architecture, cultural identity, spatial design, Indonesiat.
Copyright (c) 2025 Habib Auliya Rahman (Author) https://creativecommons.org/licenses/by/4.0
Evaluation of the Effectiveness of Waste Bank Programs in Reducing Waste and Methane Emissions in Urban Areas
Urban waste generation continues to rise in line with increased consumption patterns, particularly in rapidly developing cities. This study analyzes the effectiveness of community-based waste banks in reducing municipal waste volume, lowering methane emissions, and strengthening urban climate resilience. Waste banks play a pivotal role in diverting recyclable and organic materials from landfills through structured sorting systems, economic incentives, and integrated organic processing such as composting and maggot cultivation. These mechanisms significantly reduce anaerobic decomposition, which is the primary source of methane emissions in landfills. Community participation, institutional capacity, technological support, and government collaboration emerge as key factors that determine the overall performance of waste bank programs. The development of circular economy practices within waste bank operations contributes to environmental quality improvement while simultaneously generating economic benefits for local communities. The findings highlight that waste banks are not only tools for waste reduction but also essential components of urban climate mitigation strategies. Their ability to integrate social, ecological, and economic functions positions them as effective, low-cost solutions for modern urban environmental management.
waste bank, methane emission reduction, circular economy, urban resilience, organic waste management.
Copyright (c) 2025 Erna Tri Asmorowati, Eko Sutrisno, Diah Sarasanty, Ainin Bashiroh, Faizatus Sholikhah (Author) https://creativecommons.org/licenses/by/4.0
Occupational Safety and Health (OSH) Analysis to Minimize Potential Hazards Using the Job Safety Analysis (JSA) Method at Bleduk Jati MSMEs
This study aims to analyze potential hazards in the production process of Bleduk Jati MSMEs through the application of the Job Safety Analysis (JSA) method to strengthen occupational safety and health efforts. Hazard identification was carried out by mapping all stages of work, collecting primary data through questionnaires, and confirming field conditions using supporting documentation. Risk scores were obtained from a combination of frequency and severity values, which were then summarized in a risk matrix to determine the hazard category for each production process. The results showed that several activities, such as cutting, baking, and smoothing, had high to extreme levels of danger, especially those involving direct contact with machinery, exposure to heat, and material dust. These findings emphasize the importance of stronger control through technical improvements, the use of personal protective equipment, work area rearrangement, and increased worker understanding of safety procedures. The study concludes that the application of JSA provides a more structured overview of risks and can serve as a basis for developing safe work procedures for the operational sustainability of MSMEs.
Job Safety Analysis, Occupational Safety, Potential Hazards, MSMEs, Production Risks
Copyright (c) 2025 Ali Asnawi (Author) https://creativecommons.org/licenses/by/4.0
The Role of Employees in the Occupational Safety and Health (OSH) Culture of PT. Yura Putra Pratama
Occupational safety and health (OSH) culture plays an important role in ensuring worker safety, especially in the construction sector, which has a high level of risk. This study aims to analyze the role of employees in building and strengthening OSH culture at PT Yura Putra Pratama, a contracting company engaged in building construction, road construction, and railway door installation. Through a qualitative descriptive approach based on literature review, it was found that active employee involvement in OSH implementation, including compliance with procedures, use of personal protective equipment (PPE), reporting of potential hazards, participation in training, and work communication, are key factors in reducing workplace accidents and improving project performance. The study results emphasize that OSH culture is not only the responsibility of management but also requires the awareness and commitment of every employee to create a safe, healthy, and productive work environment across all PT Yura Putra Pratama projects
OSH Culture, Occupational Safety, Occupational Health, Employee Role, Construction, PT Yura Putra Pratama.
Copyright (c) 2025 Rizky Aulia Firdaus, Ananda Yhuto Wibissono Putra (Author) https://creativecommons.org/licenses/by/4.0
Integration of Deep Learning Technology in Measuring Physical Fitness of High School Students
This study aims to integrate deep learning technology to measure the physical fitness of high school students more accurately and efficiently than traditional manual methods. A total of 240 students from three schools participated in the assessment of five fitness components: cardiovascular endurance, muscular strength, flexibility, speed, and body mass index (BMI). A Convolutional Neural Network (CNN)-based system was employed to analyze students’ movement video data and evaluate their fitness levels. The results show that the deep learning model achieved an accuracy of 94.6% compared to manual assessments by professional trainers, while reducing evaluation time by 62% (from 25 minutes to 9.5 minutes per student) and improving inter-rater consistency from 0.71 to 0.93. Additionally, 87% of physical education teachers reported that the system was highly beneficial for assessment and documentation. These findings indicate that the integration of deep learning enhances the accuracy, efficiency, and objectivity of physical fitness evaluation and holds significant potential for broader application in technology-based physical education.
Deep learning, physical fitness, high school students, artificial intelligence, physical education.
Copyright (c) 2025 Butsiarah (Author) https://creativecommons.org/licenses/by/4.0
Mathematical Model-Based Slope Stability Analysis for Sustainable Urban Infrastructure Planning
Slope stability is a fundamental aspect in the planning and implementation of urban infrastructure projects. This study aims to examine the application of mathematical models in slope stability analysis to improve the reliability and efficiency of infrastructure planning. The research method used is a conceptual study based on a review of the latest literature related to analytical and numerical approaches, including the limit equilibrium method, finite element analysis, and other numerical methods. The results show that the integration of mathematical models with location-specific geotechnical parameters can increase the accuracy of safety factor predictions by up to 25% compared to conventional empirical methods. The implementation of this model has the potential to optimize slope reinforcement design and project cost efficiency by up to 20%. This study recommends the development of a real-time data-based integrative system to support sustainable infrastructure development.
Slope Stability; Mathematical Models; Geotechnics; Urban Infrastructure; Sustainable Development.
Copyright (c) 2025 Risang Setyobudi (Author) https://creativecommons.org/licenses/by/4.0
An Engineering Approach to Architectural Heritage Conservation at Taman Sari in Yogyakarta
This study discusses the conservation of the Taman Sari complex in Yogyakarta as an architectural heritage that combines elements of Javanese culture, European influences, and functional principles as a water palace, garden, and defensive fortress, amid challenges of structural degradation, changes in function, and the pressures of urbanization. The research method uses a qualitative-descriptive approach with case studies, examining historical documentation, scientific publications, and digital modeling through Heritage Building Information Modeling (HBIM) and close-range photogrammetry to assess existing conditions, identify critical areas, and formulate engineering-based conservation strategies. The results show that the integration of water elements, building structures, cross-cultural ornaments, and hydraulic systems requires holistic conservation intervention, combining traditional and modern techniques as well as digital documentation to preserve function, aesthetics, and historical value. The conclusion affirms that an engineering conservation approach allows Taman Sari to be fully restored, while supporting educational, cultural, and sustainable tourism experiences.
Taman Sari, Architectural Conservation, Engineering, HBIM, Cultural Heritage.
Copyright (c) 2025 Rahmania Suryaning Widyas, Shofiyyaturrodhiyah M. D. (Author) https://creativecommons.org/licenses/by/4.0
Aesthetic Impression and Function of the Roofless Pinisi Pedestrian Bridge on Sudirman Street: A Perspective on Urban Design Evaluation to Optimize Urban Safety and Comfort
This study analyzes the aesthetics of the roofless Pinisi Pedestrian Bridge in the Sudirman area as an element of public space that plays a role in shaping the visual quality and pedestrian experience in the city center. A qualitative approach was used to understand users' perceptions of the form, materials, structure, and visual impressions that emerged after the revitalization. Documentation and thematic analysis studies show that design changes have improved comfort, safety, and area identity, in line with previous studies emphasizing the importance of aesthetics in urban spaces. The results of the study show that the presence of visual elements that are in harmony with the surrounding environment can create a more organized flow of movement and a more attractive atmosphere for the community. The revitalization of the Pinisi pedestrian bridge also strengthens the image of the Sudirman area as a modern public space that supports pedestrian activity. These findings confirm that the integration of aesthetic value and function is key in designing pedestrian infrastructure that is adaptive to the needs of urban communities.
JPO aesthetics, public space, Sudirman, urban design, user comfort
Copyright (c) 2025 Triana Amalia Putri, Mamluatul Uyun (Author) https://creativecommons.org/licenses/by/4.0
Analysis of the Role of Javanese Vernacular Architectural Elements on the Effectiveness of Natural Ventilation in Tropical Climates
This study discusses the role of Javanese vernacular architectural elements in the effectiveness of natural ventilation in tropical climates, given Indonesia's high temperatures, humidity levels of over 70%, and high solar radiation intensity throughout the year. The research method used was a descriptive qualitative approach through literature study, field observation, and architectural element analysis, focusing on the Joglo and Limasan house typologies, wood materials, cross openings, and roof shapes. The results show that the combination of structural elements, strategic openings, building orientation, and passive ventilation can reduce interior temperatures by 3–3.3°C, maintain humidity, and improve air quality without relying on mechanical systems. The discussion emphasizes the synergy between local wisdom and bioclimatic principles in creating thermal comfort, while also serving as a reference for sustainable modern tropical design. In conclusion, the integration of traditional elements and natural ventilation strategies effectively supports comfortable, healthy, and energy-efficient tropical housing.
Vernacular Architecture, Natural Ventilation, Traditional Javanese Houses, Tropical Climate, Thermal Comfort.
Copyright (c) 2025 Muhammad Syihabul Milal (Author) https://creativecommons.org/licenses/by/4.0
Integration of Adaptive Learning Approaches and Interactive Technology to Optimize Student Learning Processes in Digital Higher Education Environments
Transformasi pendidikan tinggi menuju era digital menuntut inovasi dalam metode pembelajaran yang dapat mengakomodasi keragaman karakteristik mahasiswa. Artikel ini mengkaji integrasi pendekatan pembelajaran adaptif dengan teknologi interaktif sebagai solusi untuk mengoptimalkan proses pembelajaran di universitas digital. Melalui metode studi literatur, penelitian ini menganalisis berbagai sumber ilmiah untuk memahami konsep, implementasi, dan dampak integrasi kedua pendekatan tersebut. Hasil penelitian menunjukkan bahwa pembelajaran adaptif yang diperkuat dengan teknologi interaktif dapat secara signifikan meningkatkan personalisasi pembelajaran, keterlibatan mahasiswa, dan hasil belajar. Integrasi ini memungkinkan penyesuaian konten, kecepatan, dan metode pembelajaran berdasarkan kebutuhan individu mahasiswa, sambil memanfaatkan berbagai media interaktif untuk meningkatkan pengalaman belajar. Tantangan utama dalam implementasi meliputi keterbatasan infrastruktur, kesiapan sumber daya manusia, dan kebutuhan akan pergeseran paradigma pembelajaran. Namun, dengan strategi implementasi yang tepat dan dukungan institusional yang memadai, integrasi pembelajaran adaptif dan teknologi interaktif dapat menjadi kunci keberhasilan transformasi pendidikan tinggi di era digital.
Copyright (c) 2025 Ikhwan Pujiono, Viviane Manoppo, Rendy Bagus Pratama (Author) https://creativecommons.org/licenses/by/4.0
Collaborative Governance in the Supervision of Public Freight Transportation Contributing to the Zero Over Dimension and Over Loading Program
The Zero Over-Dimension and Over-Loading (ODOL) program is a strategic government effort to improve transportation safety and maintain the sustainability of road infrastructure. However, the effectiveness of its implementation depends heavily on cross-agency synergy and the participation of various stakeholders. This article analyzes the role of collaborative governance in strengthening oversight of public freight transportation to align with the Zero ODOL goal. This research employed a qualitative method, with informants selected purposively, considering their understanding of the challenges posed by the local government in promoting air connectivity in Southeast Sulawesi Province. The research was conducted from August to November 2025. The results concluded that effective oversight of public freight transportation is key to the success of the Zero Over-Dimension and Over-Loading program in maintaining safety and infrastructure sustainability. Collaborative governance, as a multi-stakeholder governance model, provides a strategic solution to address the complexity of oversight.
Copyright (c) 2025 R. Harryawan Latullah, Galih Adi Sulistyo, Maudhy Satyadharma, Hado Hado (Author) https://creativecommons.org/licenses/by/4.0
Analysis of Soil Stability and Foundation Bearing Capacity in Infrastructure Development in Earthquake-Prone Areas
Indonesia, as an archipelagic country located at the meeting point of three major tectonic plates, faces enormous challenges in developing infrastructure in earthquake-prone areas. This study analyzes soil stability and foundation bearing capacity as crucial factors in planning earthquake-resistant infrastructure development. The study was conducted using a quantitative approach with secondary data analysis from various infrastructure projects in earthquake-prone areas in Indonesia. The parameters analyzed include soil characteristics, bearing capacity, safety factors, and soil response to seismic loads. The results of the study show that a comprehensive understanding of soil mechanics, the application of appropriate analysis methods, and the selection of suitable foundation types are critical to the success of infrastructure development in earthquake-prone areas. Stability analysis shows that deep foundations such as piles and bored piles are more effective at withstanding earthquake loads than shallow foundations on soft soil. This study recommends the use of soil improvement technology and hybrid foundation systems to increase soil bearing capacity in high seismic zones. These findings make an important contribution to civil engineering practitioners in planning safe and sustainable infrastructure in disaster-prone areas
Copyright (c) 2025 Buyung Mantap, M. Wisridani P., Parwito (Author) https://creativecommons.org/licenses/by/4.0
Utilization of Automatic Irrigation Technology and Soil Moisture Sensors in Supporting Water Efficiency and Sustainable Food Security
Limited water resources and increasing global food demand require the application of efficient and sustainable agricultural technologies. This study examines the use of soil moisture sensor-based automatic irrigation technology to improve water efficiency and support sustainable food security through literature review and secondary data analysis. The results show that this technology can save water usage by 30–50%, increase crop productivity by up to 25%, and reduce long-term operational costs. The system works by continuously monitoring soil moisture and regulating water supply according to crop needs. The main challenges include initial investment costs, farmers' limited knowledge, and supporting infrastructure, but these can be overcome through policy support, training, and appropriate business models. This study recommends the development of affordable automated irrigation systems, increased farmer capacity, and comprehensive policies to accelerate the adoption of this technology at the field level.
Copyright (c) 2025 Parwito (Author) https://creativecommons.org/licenses/by/4.0
The Role of Local Government in Improving Air Transportation Connectivity in Southeast Sulawesi Province
Air transportation is an important element in supporting regional development, especially in archipelagic areas such as Southeast Sulawesi Province. This study aims to analyze the role of local government in improving air transportation connectivity in the region. The method used is a qualitative approach with purposive sampling techniques of informants who understand air transportation management policies and practices. Data were obtained through interviews, observations, and document reviews during August–November 2024. The results show that the Southeast Sulawesi Regional Government plays a significant role in supporting air transportation connectivity through four main functions, namely as a regulator, dynamizer, facilitator, and catalyst. As a regulator, the local government establishes policies and provides support for land acquisition; as a dynamizer, it encourages collaboration with the private sector; as a facilitator, it bridges cooperation between regions and airlines; and as a catalyst, it accelerates infrastructure development and creates a conducive investment climate. These roles have proven to have a positive impact on increasing mobility, economic growth, and the development of the tourism sector in Southeast Sulawesi. Strengthened collaboration among stakeholders is needed so that air connectivity can function optimally.
Copyright (c) 2025 Muhamad Rajulan, Maudhy Satyadharma, Hado (Author) https://creativecommons.org/licenses/by/4.0
Review of Membrane Technology Developments in Separating CO₂ from CH₄
Global CO₂ emissions exceeding 30 billion tons annually significantly contribute to global warming, including in natural gas, biogas, and landfill gas streams containing CH₄. High CO₂ content lowers CH₄’s calorific value, requiring efficient separation technology. Gas membranes offer an energy-efficient, low-cost, and simple alternative to conventional methods. This study reviews advancements in CO₂/CH₄ separation membranes, focusing on material innovations and performance. A systematic literature review was conducted following PRISMA guidelines, covering international publications (2010–2025) with relevant keywords. Data were analyzed qualitatively and quantitatively by membrane type, material, separation mechanism, and performance parameters such as permeability (PCO₂) and CO₂/CH₄ selectivity. Results show a publication surge after 2015, driven by developments in high-free-volume polymers (PIMs), carbon molecular sieves (CMS), zeolite-based inorganic membranes, mixed-matrix membranes (MMMs), and 2D materials like graphene and MOFs. Some materials exceeded the Robeson limit, achieving PCO₂ in the tens of thousands of Barrer with selectivity >100. Remaining challenges include plasticization, long-term stability, production costs, and scalability.
Copyright (c) 2025 Rafi Indratama, Isaki Sico (Author) https://creativecommons.org/licenses/by/4.0
Analysis of Degradation and Prediction of Lithium-ion Battery Life Based on NREL Dataset
Penelitian ini menganalisis performa baterai lithium-ion berdasarkan NREL Battery Lifetime Dataset yang memuat hasil pengujian pada berbagai kondisi operasional. Metode penelitian meliputi pembersihan data, analisis hubungan kapasitas terhadap jumlah siklus, visualisasi tren degradasi, serta pemodelan prediksi umur pakai menggunakan regresi linier. Hasil menunjukkan bahwa metode pengisian pulse current memiliki laju degradasi lebih rendah dibandingkan metode constant current–constant voltage (CC-CV), dengan perbedaan kapasitas akhir mencapai 7% pada siklus ke-1000. Analisis parameter sebelum dan sesudah 500 siklus memperlihatkan penurunan kapasitas dan State of Health masing-masing sebesar 18%, peningkatan resistansi internal sebesar 22,2%, waktu pengisian lebih lama 13,3%, serta penurunan efisiensi energi sebesar 7,4%. Model regresi menghasilkan nilai R-squared sebesar 0,991 dan p-value < 0,001, menandakan hubungan negatif yang signifikan antara jumlah siklus dan kapasitas. Temuan ini menegaskan pentingnya pemilihan metode pengisian yang tepat, pemantauan parameter secara real-time, dan manajemen baterai berbasis data untuk memperpanjang umur pakai serta meningkatkan keandalan sistem penyimpanan energi.
Copyright (c) 2025 Muhammad Yasphi Matondang, Bahma Efendi Matondang (Author) https://creativecommons.org/licenses/by/4.0
Design, Development, and Implementation of a Web and Android-Based Payment Gateway at the Bukit Cinta Tourist Attraction in Semarang Regency
Advances in information and communication technology have brought significant changes to various aspects of life, including the tourism sector. Bukit Cinta Tourist Attraction in Semarang Regency is one of the tourist destinations that continues to strive to improve its services to visitors. One of these efforts is to implement a web-based and Android payment gateway system. This study aims to design and develop a payment gateway system that can facilitate digital payment transactions for visitors to the Bukit Cinta Tourist Attraction. The system is designed to integrate various payment methods, such as bank transfers and digital wallets, thereby simplifying the process of paying for entrance tickets and various services at the tourist site. The research method used is the agile method, which includes planning, design, development, and testing phases. The results of the black-box testing indicate that the application interface functions well as planned. In the stress test, it was found that higher network speed availability improves application performance, and overall, the system can handle request loads effectively. It is hoped that the results of this research will contribute positively to Bukit Cinta Tourist Attraction in Semarang Regency by enabling ticket purchases to be made anywhere and generating accurate transaction data
Copyright (c) 2025 Ayudya Sawitri, Nabila Kusumawardani, Helmy, Sindung Hadwi Widi Sason (Author) https://creativecommons.org/licenses/by/4.0
The Effect of Network Speed on the Performance of the Google Drive Web-Based Cloud Application
The development of digitalization has led to the massive use of cloud services such as Google Drive, but its performance is greatly influenced by network speed. In Indonesia, the average internet speed still lags behind other countries in ASEAN, so a quantitative analysis of its impact on application performance is needed. This study aims to measure the relationship between network speed variations and the performance of web-based Google Drive through four indicators: upload time, download time, latency, and throughput. The method used is a quantitative experiment with a between-subjects design, testing five speed levels (5, 10, 25, 50, 100 Mbps) on three file sizes (10 MB, 100 MB, 500 MB), each repeated 30 times in a controlled environment using a network emulator. Data were analyzed using descriptive statistics, one-way ANOVA, post-hoc Tukey tests, and linear regression. Results showed that network speed significantly influenced all indicators (p < 0.001), with R² values ranging from 0.87 to 0.96. Increasing speed up to 25 Mbps resulted in significant performance improvements, but beyond this point, a diminishing return phenomenon occurred. Practically, each 1 Mbps increase reduced upload time by 0.075 seconds, download time by 0.068 seconds, latency by 0.215 ms, and increased throughput by 0.019 MB/s.
Copyright (c) 2025 Widiyanto Widiyanto, Amir Syamsudin (Penulis) https://creativecommons.org/licenses/by/4.0
Designing a Web-Based Employee Performance Evaluation Information System Using the RUP Method at PT. Cinta Food
This study aims to analyze the implementation of a web-based employee performance appraisal system at PT. Cinta Food, focusing on effectiveness, consistency, and administrative efficiency. The research employed a case study design with a descriptive quantitative approach, supported by system testing using the blackbox method. Findings reveal that the implementation of the web-based system reduced the performance appraisal process from 14 days to 4 days, achieving a 71.43% efficiency gain. The consistency rate between appraisers increased from 78% to 95%, indicating a significant reduction in subjective bias. Additionally, the administrative workload in the HRD division decreased by up to 60% due to automated archiving and integration of attendance data with performance targets. The system’s audit trail feature enhanced transparency and simplified dispute resolution. These results align with previous studies highlighting the benefits of digitizing performance appraisals to improve accuracy and speed. The findings are expected to serve as a reference for other organizations aiming to optimize performance evaluation systems through information technology.
Copyright (c) 2025 Muhammad Masngudi, Halimah Halimah (Penulis) https://creativecommons.org/licenses/by/4.0