Title proper: Jurnal Kridatama Sains dan Teknologi E-ISSN: 2685-6921 Jurnal Kridatama Sains dan Teknologi This journal is a scientific information medium that contains articles on research results and theoretical studies within its scope, as well as original scientific papers, review articles, and case studies. Jurnal Kridatama Sains dan Teknologi is published twice a year in June and December with a publish us you go scheme. Focus and Scope focused on Civil Enginering, Agriculture, Informatics Enginering, Education, and Animal Hubandry as well as related topicsof agricultural science. Jurnal Kridatama Sains dan Teknologi is published twice a year. From January 2023 Jurnal Kridatama Sains dan Teknologi We are excited to announce is moving to a “publish-as-you-go” scheme. This means that we no longer wait to accumulate several articles into an issue before publication. Rather, articles are continuously added to current issues as they are accepted and complete the production process. As an online publication, we are free of the constraints imposed by print publishing, and publishing articles on the go will reduce publication lag for our authors, and make the newest research available to our readers more quickly. After completing the review process, an article is assigned a DOI and published online in the current issue. When the issue period ends, a new issue is activated and articles with DOI are added until the end of the issue period. So accepted articles are published without waiting for the issue period. Publisher: Universitas Ma'arif Nahdlatul Ulama Kebumen
Universitas Ma'arif Nahdlatul Ulama Kebumen
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-ShareAlike 4.0 International License that allows others to share the work with an acknowledgment of the work’s authorship and initial publication in this journal
Model Machine Learning yang Dioptimalkan untuk Prediksi Penyakit Jantung Menggunakan R Shiny
Heart disease continues to be a major contributor to global mortality, highlighting the critical importance of early detection in enhancing patient outcomes. The increasing availability of structured clinical datasets has enabled the application of intelligent systems for risk prediction and diagnostic support. In this paper, the effectiveness of three supervised learning algo- rithms—Random Forest (RF), Support Vector Machine (SVM), and Decision Tree (DT)—is evaluated for the task of heart disease prediction. This investigation is based on the Heart Failure Prediction dataset sourced from the Kaggle platform. The training process for each model involved a 10-fold cross- validation, with its hyperparameters later being tuned using grid search optimization. Model efficacy was measured against standard classification benchmarks, including accuracy, sensitivity, specificity, and the area under the ROC curve (AUC). The Random Forest model emerged as the most effective, demon- strating superior performance with an AUC of 0.9517, sensitivity of 81.18%, and specificity of 90.44%. To facilitate clinical use, this model was subsequently integrated into a user-friendly web tool built with the R Shiny framework. The interface allows users to input patient-level clinical data and obtain real-time predictions, along with visualizations of feature importance and risk probability. This implementation bridges the gap between algorithm development and practical application, offering a user- friendly decision support tool for early heart disease screening. The findings affirm that machine learning models, when properly tuned and validated, can serve as effective and interpretable tools in clinical decision-making. This work contributes to the advancement of e-health and the integration of AI-driven models into medical workflows
Copyright (c) 2026 Yadhurani Dewi Amritha, Ni Luh Putu Ika Candrawengi, Md Wira Putra Dananjaya, Made Ari Riska Dayanti https://creativecommons.org/licenses/by-sa/4.0
Implementasi Sistem Absensi Guru Dan Tenaga Kependidikan Berbasis Geolokasi Dan Validasi Jam Kerja
Improving the accountability and work discipline of teachers and educational staff requires an accurate, transparent, and tamper-resistant attendance system. This study implements a geolocation-based attendance system with work-hour validation at MI Misbahul Munir Sogaan Pakuniran Probolinggo to ensure that attendance is recorded within a predetermined location and time window. The system was developed using a Research and Development (R&D) approach comprising needs analysis, design, implementation, and testing. A web-based application was built using HTML5, PHP (CodeIgniter), and MySQL, leveraging the Geolocation API to obtain user coordinates and validate them against the school reference point and a predefined radius. The implementation results indicate geolocation accuracy of up to 3.2 meters in open areas; however, when used indoors, the deviation increased to 8 meters, suggesting a radius adjustment for certain zones. Functional testing using black-box testing across 15 main scenarios (authentication, check-in/check-out, and reporting) achieved a 100% success rate under normal conditions, and the system fulfilled approximately 95% of the requirements identified during the analysis stage. In addition, the system contributed to improved punctuality, reflected by a reduction in average lateness from 22.5 minutes to 6.8 minutes based on attendance recapitulation before and after implementation. With geolocation and work-hour validation, the system reduces opportunities for fraud, accelerates reporting, and enables real-time monitoring for the school principal. This study contributes a practical reference for adopting web-based geolocation attendance systems in primary Islamic schools and similar educational institutions
Copyright (c) 2026 Moh. Sukron, Moh. Rendy, Moh Haris Hamdani https://creativecommons.org/licenses/by-sa/4.0
Studi Perbandingan Perilaku Balok Beton Tulangan Baja Konvensional dan Balok Beton Tulangan Glass Fiber Reinforced Polymer
Reinforced concrete commonly uses conventional steel reinforcement due to its good tensile strength and ductility. However, steel reinforcement is susceptible to corrosion and has a relatively high self-weight. Glass Fiber Reinforced Polymer (GFRP) has emerged as an alternative reinforcement material with high tensile strength, low weight, and excellent corrosion resistance. This study aims to compare the flexural behavior of reinforced concrete beams using GFRP reinforcement and conventional steel reinforcement in terms of maximum flexural capacity, load–deflection behavior, and crack patterns. The research was conducted experimentally through laboratory testing using the two-point loading method. The test specimens were concrete beams measuring 150 × 150 × 600 mm, reinforced with either steel or GFRP bars with diameters of 6 mm and 8 mm. The results indicate that GFRP-reinforced beams exhibit higher maximum flexural capacity than steel-reinforced beams, with increases of 44.53% for 6 mm diameter bars and 15.65% for 8 mm diameter bars. In addition, GFRP-reinforced beams show greater deflection, indicating higher flexibility compared to steel-reinforced beams. Crack pattern observations reveal that GFRP-reinforced beams develop more numerous and widely distributed cracks and tend to experience shear failure, whereas steel-reinforced beams display more controlled flexural cracking. These findings suggest that GFRP reinforcement has significant potential as an alternative to conventional steel reinforcement, particularly for structures requiring high corrosion resistance and a high strength-to-weight ratio, while careful consideration of shear failure is necessary in design
Copyright (c) 2026 Kharisma Dwi Ramadhani, Annisa Rahma Sabrina, M. Vicky Restu Bachtiar, Aviv Setiawan, Endah Kanti Pangestuti, Nurti Kusuma Anggraini https://creativecommons.org/licenses/by-sa/4.0
Interaksi Air Tanah dan Air Permukaan Sungai Asem Ruas Antara Bendung Boreng sampai Area Industri Kabupaten Lumajang
The interaction between groundwater and river water is an important hydrological process that affects the quantity and quality of water resources. The purpose of this study was to identify and analyze the interaction between groundwater and surface water in the Asem River in the section between Boreng weir and the Industrial Area of Lumajang Regency. The study was conducted during the dry season, namely from May to October 2025. Sampling was carried out at 5 river cross-sections, each consisting of groundwater on the left side of the river flow, surface water (river), and groundwater on the right side of the river. The physical-chemical parameters observed included pH, temperature, TDS, and EC. The measurement data were analyzed using a statistical approach that included time series analysis, correlation analysis, principal component analysis, and cluster analysis. Based on the results of the time series analysis, it can be stated that there are similarities in the fluctuation patterns of physical-chemical parameters, especially temperature and pH, between groundwater and river water. Based on the results of the correlation analysis, it can be stated that the level of relationship is moderate to strong between groundwater and river water. Based on the results of the principal component analysis, it can be stated that the TDS and EC parameters play a dominant role in differentiating water characteristics. Based on the results of the cluster analysis, it can be stated that the interaction between groundwater and river water is not uniform along the river flow, with strong interactions identified in Cross Section-4 and Cross Section-5. In general, it can be concluded that at the research location there is an interaction between groundwater and river water which is influenced by local hydrological conditions
Copyright (c) 2026 Anisa Tri Widiyanti, Hari Siswoyo, Linda Prasetyorini https://creativecommons.org/licenses/by-sa/4.0
Perancangan UI/UX Website Point of Sale (POS) Menggunakan Metode Design Thinking di PT Hayaa Investama Group
The process of managing sales transactions, inventory, and financial records at PT Hayaa Investama Group is still done manually. This causes the work process to be less efficient and risks causing recording errors. This condition indicates the need for the implementation of a web-based Point of Sale (POS) system that can support the company's operational activities more effectively, especially in terms of ease of use. This study aims to design the interface and user experience of the web-based Point of Sale system at PT Hayaa Investama Group using the Design Thinking method. This method is implemented through five stages, namely Empathy, Definition, Ideation, Prototype, and Testing. Data collection was carried out through observation and interviews with employees and company owners to obtain an overview of user needs. The result of this study is a High-Fidelity prototype equipped with features for managing transactions, inventory, suppliers, purchases, sales, and reports. Prototype testing was conducted using Maze Usability Testing and resulted in a score of 80% from 9 respondents with 7 block missions. The test results indicate that the developed system design is quite easy to use and can be understood by users
Copyright (c) 2026 Naesya Azzahra, Pradita Eko Prasetyo Utomo, Muhammad Razi A. https://creativecommons.org/licenses/by-sa/4.0
Analisis Kapasitas Hidraulik Saluran Drainase Menggunakan Pemodelan Storm Water Management Model (SWMM): Studi Kasus di Kecamatan Banguntapan
Inundation is a major problem that frequently occurs in both residential areas and other urban zones, particularly in large cities. Flooding in residential areas is often caused by the failure of drainage channels to convey excess water. This condition commonly occurs when high rainfall intensity is not supported by adequate drainage capacity or when drainage channels are obstructed by solid waste. This study employs a mixed-methods approach, combining quantitative and qualitative methods. Identification was conducted through coordination with relevant stakeholders and direct observation of existing conditions at the study location. The analysis was carried out using hydraulic modeling of drainage channels with the SWMM 5.2 software. The results of the hydraulic modeling indicate that, in several locations, the drainage channel capacity is no longer sufficient and therefore requires capacity enlargement. Meanwhile, in locations where the channel capacity remains adequate, significant amounts of waste and sedimentation were found, causing blockages and reducing the effective capacity of the existing drainage system. To ensure the sustainability of the drainage system in Kapanewon Banguntapan, routine and periodic operation and maintenance activities are required, including rehabilitation of drainage channels that are already in deteriorated condition.
Copyright (c) 2026 Muhamad Arifin, Cahyaning Kilang Permatasari https://creativecommons.org/licenses/by-sa/4.0
Pemanfaatan Teknologi Web dalam Pengembangan Sistem Informasi Sekolah untuk Meningkatkan Layanan Publik di SD Negeri 1 Demung Besuki, Situbondo
Digital transformation in the basic education sector has become an urgent necessity in the era of information technology. SD Negeri 1 Demung Besuki, Situbondo, as an educational institution, has not yet implemented an integrated information system to manage public services such as academic information, the school profile, and communication with parents. The school still relies on manual methods that may lead to inefficiency and delays in delivering information. This study aims to design and implement a web-based school information system to improve the quality of public services through technology integration. This research adopted the waterfall method, consisting of the following stages: requirements analysis (field observations and interviews with stakeholders, including the principal, teachers, and parents), system design (relational database design, process flow design, and user interface design), system implementation, and testing and evaluation. Functional testing was conducted using black-box testing, while usability was evaluated using the System Usability Scale (SUS) questionnaire. The developed system provides core school information services, including dynamic content management (school profile, news, and gallery), a real-time announcement module, and an admin dashboard for updating information, with a responsive interface compatible with mobile devices. The evaluation results indicate a 72% improvement in information delivery efficiency, calculated by comparing the average efficiency indicator scores (e.g., speed of accessing information, timeliness of receiving announcements, and reduced need for manual confirmations) before and after the system implementation, based on questionnaire data from participants consisting of teachers/parents. Therefore, the web-based school information system contributes significantly to faster and more efficient public service delivery compared to conventional methods
Copyright (c) 2026 Muafi Muafi, Muh. Ilham Fahmi, Narendra Yogi Prasetyo, Dwi Candra Aldianto https://creativecommons.org/licenses/by-sa/4.0
Sistem Informasi Dana Penunjang Pendidikan dan Kegiatan (DPPK) Berbasis Web di MA Nurul Jadid
MA Nurul Jadid is one of the upper secondary education institutions under the auspices of Nurul Jadid Islamic Boarding School, Probolinggo Regency. The school offers three majors (Science, Social Studies, and Language) as well as three programs (excellent, regular, and religious) to accommodate students’ interests and needs. The management of the Educational and Activity Support Fund (DPPK) is still carried out manually using cash books and Microsoft Excel, which causes several issues such as recording errors, delayed reporting, and difficulties in real-time financial monitoring. This study aims to design and develop a web-based information system to improve administrative efficiency, data accuracy, and transparency in DPPK management. The research applies a mixed-methods approach, consisting of qualitative methods (interviews and observations) to identify user needs and challenges, and quantitative methods to measure system effectiveness through indicators such as recording accuracy and simplified reporting processes. The system was developed using the Laravel framework version 11 and MySQL database. The results show that the system is capable of automating the recording, monitoring, and reporting processes in a more structured and real-time manner. External testing of 10 respondents resulted in a 90% satisfaction rate. regarding ease of use and clarity of functions, indicating good user acceptance. In conclusion, the implementation of this system significantly improves DPPK financial management by reducing administrative errors and accelerating information access. Future developments may include integrating mobile platforms and technologies such as Node.js to enhance accessibility and flexibility.
Copyright (c) 2026 Bambang Bambang, Helyatin Nisyak, Nadzirotul Fithriyah https://creativecommons.org/licenses/by-sa/4.0
Prototipe Alat Deteksi Banjir Berbasis ESP32, TinyML, dan Notifikasi Telegram
Floods are among the most frequent hydrometeorological disasters in Indonesia and cause significant impacts on public safety, economic activities, and community infrastructure. To support improved preparedness, a water level monitoring system that operates in real time, provides accurate measurements, and is easy to implement in the field is required. This study aims to develop a prototype of an Internet of Things (IoT)-based water level monitoring and classification system using an ESP32 microcontroller, an HC-SR04 ultrasonic sensor, and a Tiny Machine Learning (TinyML) model that performs on-device inference. Water condition determination is based on predefined criteria and water level thresholds established during the analysis stage, which are subsequently used for data labeling and TinyML model development. The system is equipped with LED indicators (green, yellow, red), a 0.96-inch I2C OLED display for local monitoring, and an automatic notification mechanism via the Telegram application as a remote early warning system. The research adopts a Research and Development (R&D) approach using the ADDIE model, which includes needs analysis, system design, hardware and software development, prototype implementation, and system performance evaluation. Experimental results show that the system is able to measure water levels stably with a maximum error of 0.2 cm. A Mean Absolute Error (MAE) of 0.025 cm was obtained from eight experimental trials within a test range of 0–22.5 cm. The system successfully classified water conditions into “Safe,” “Alert,” and “Flood” categories using the TinyML model, achieving 100% agreement with test scenarios across ten test conditions. Furthermore, the Telegram notification mechanism operated as designed, with warning messages sent during all tested warning status transitions (five out of five scenarios) and not sent under stabel safe conditions. These findings indicate that the integration of IoT and TinyML has strong potential to support responsive and efficient flood monitoring and early warning systems, suitabel for small- to medium-scale prototype deployment in residential areas prone to inundation with measurable water level variations.
Copyright (c) 2026 Laily Rahmad Fauzi, Imam Suharjo https://creativecommons.org/licenses/by-sa/4.0
Evaluasi Aplikasi Pembayaran di Madrasah Tsanawiyah (MTs) Berbasis Website
This research was conducted at MTs Ma'arif NU 01 Susukan from November to December 2024 with the aim of evaluating the development of a website-based Syahriyah Madrasah Application. The type of research used was Research and Development (R&D) with the ADDIE development model. The focus of paper publication was on the evaluation stage. Research data was obtained through interviews with competent media experts in their fields, then analyzed using a Likert scale (Aurora & Effendi, 2019). The validity test of the development results refers to the criteria set by Hidayat et al. (2024) a percentage of 75.01%–100% is categorized as very valid, 50.01%–75% is quite valid, 25.01%–50% is invalid, and 0%–25% is very invalid. The results of the research evaluation showed that the developed application obtained an average SUS score of 63.25, which is in the fairly valid category. These findings indicate that the application is suitable for use in supporting the management of Syahriyah payments in madrasas, although further development is needed to improve quality, convenience, and user satisfaction. Evaluation of the results of the website-based Syahriyah Madrasah application can be an effective solution for increasing transparency and accuracy in school financial management.
Copyright (c) 2026 Akhmad Fadjeri, Taufik Hidayat, Endang Wahyuningsih, Mokhamad Isro, Anisa Dwi Nurchayati https://creativecommons.org/licenses/by-sa/4.0
Uji Aktivitas Antibakteri Ekstrak Etanol 96% Daun Angsana (Pterocarpus Indicus) Dengan Konsentrasi 5% dan 10% terhadap Bakteri Shigella Dysenteriae
Diarrhea is an abnormal condition of fecal excretion commonly caused by bacterial, viral, or parasitic infections, as well as poor sanitation and hygiene. One of the main pathogenic bacteria responsible for diarrhea, particularly bacillary dysentery, is Shigella dysenteriae. The high incidence of diarrhea has encouraged the search for alternative treatments derived from natural materials, including angsana leaves (Pterocarpus indicus), which are known to contain bioactive compounds. This study aimed to determine the antibacterial activity of ethanolic extract of angsana leaves against the growth of Shigella dysenteriae at concentrations of 5% and 10%. The research employed a Completely Randomized Design (CRD) with a post-test only control group design. The samples consisted of six treatment groups with four replications each. Angsana leaf extract was obtained through an extraction process using 96% ethanol and subsequently tested for antibacterial activity using the disc diffusion method. All treatments were incubated for 24 hours to observe the formation of inhibition zones. The results showed that no inhibition zones were formed in the negative control group or in the groups treated with angsana leaf extract at concentrations of 5% and 10%, indicating the absence of antibacterial activity against Shigella dysenteriae. Normality testing revealed that the data were not normally distributed. Based on these findings, it can be concluded that the ethanolic extract of angsana leaves (Pterocarpus indicus) at concentrations of 5% and 10% is not effective as an antibacterial agent against Shigella dysenteriae. Further studies using higher extract concentrations or different extraction methods are recommended to obtain more optimal results.
Copyright (c) 2026 Wulan Pratiwi, Putri Nur Riani, Melly Annisa Putri, Nazwa Vidya Malik https://creativecommons.org/licenses/by-sa/4.0
Pengembangan Sistem Informasi Penjualan dan Persediaan Berbasis Web dengan Notifikasi Stok Real-Time Menggunakan Metode Design Thinking
This study aims to develop a web-based sales and inventory information system for Fotocopy Fajarsidik in Banjar City. The primary issue identified is that sales transactions and inventory records are still managed manually, resulting in potential recording errors, stock data inconsistencies, and delays in report generation. The method applied is Design Thinking, which consists of the stages of empathize, define, ideate, prototype, and test, using a user-centered approach. The results from black-box testing using the Boundary Value Analysis (BVA) approach indicate that the system achieved a 100% success rate across all testing scenarios. The system is capable of automating sales transaction recording, inventory management, and generating integrated, accurate reports. The novelty of this study lies in the integration of the Design Thinking approach in developing a user-oriented system, as well as the implementation of a real-time low-stock notification feature that is automatically displayed after user login. This feature not only provides minimum stock information but also serves as an early warning system to support proactive inventory control, distinguishing it from conventional approaches that lack automatic notification mechanisms. Therefore, the developed system can improve operational efficiency and support decision-making at Fotocopy Fajarsidik in Banjar City
Copyright (c) 2026 Muhammad Fajrusshodiq F, Ghufron Zaida Muflih https://creativecommons.org/licenses/by-sa/4.0
Potensi SIRIPLUS sebagai Balutan Luka Biodegradabel Berbasis Pati Singkong dan Ekstrak Sirih Merah (Piper crocatum): Systematic Literature Review
Chronic wounds, particularly diabetic ulcers, remain a major global medical challenge due to their high recurrence rate and substantial treatment costs. Current biomedical research increasingly focuses on wound dressings that are biodegradable, biocompatible, and therapeutically active. This article evaluates the potential of SIRIPLUS, an innovative wound dressing that integrates cassava starch (Manihot esculenta) as a natural polymer matrix and red betel leaf extract (Piper crocatum) as an active pharmacological agent. Using a systematic literature review approach referring to the PRISMA framework, the analysis synthesizes evidence on antioxidant and antibacterial activities, mechanical characteristics, and biodegradation performance. The reviewed studies indicate that Piper crocatum contains key secondary metabolites such as flavonoids, alkaloids, and tannins that may regulate p53, E-cadherin, and SOD1 pathways to support re-epithelialization and collagen deposition. Cassava starch offers film-forming ability, biocompatibility, and environmental degradability, while its physical performance can be optimized through plasticizers and cross-linking strategies. Overall, SIRIPLUS shows strong theoretical potential as an effective and environmentally sustainable modern wound dressing
Copyright (c) 2026 Mangde Anata Sindhu https://creativecommons.org/licenses/by-sa/4.0
Studi Kuat Tekan Beton dengan Substitusi Serbuk Kapur Tohor sebagai Pengganti Semen Portland
Large-scale Portland cement production contributes significant CO₂ emissions and increases construction costs. This study aims to analyze the effect of quicklime powder (CaO) substitution on concrete compressive strength and to determine the substitution level that still meets the target compressive strength. A laboratory experimental method was used with three substitution variations: 0% (control), 2.5%, and 5.5%. Each variation comprised 3 cube specimens measuring 15×15×15 cm (9 specimens total), with a concrete mix designed according to SNI 7656:2012 for a planned strength of K-125. Mix design parameters: w/c = 0.56; planned slump 75–150 mm; composition per m³: cement 366.07 kg, sand 693.78 kg, gravel 1,085.15 kg, water 205 liters. Compressive strength testing was conducted at 28 days using a Compression Testing Machine (CTM) per SNI 1974:2011, with age limited to 28 days as it represents final concrete strength per SNI 1974:2011 and ASTM C39/C39M. Results showed mean compressive strengths of: 0% = 19.78 MPa (SD = 1.28 MPa; CV = 6.5%), 2.5% = 17.95 MPa (SD = 0.65 MPa; CV = 3.6%), and 5.5% = 15.72 MPa (SD = 4.44 MPa; CV = 28.2%). Strength reduction was caused by the dilution effect, low CaO reactivity compared to Portland cement, and non-uniform particle distribution at higher substitution levels. The 2.5% substitution still met the target compressive strength (16.89 MPa) and is considered feasible, while 5.5% did not. The optimal substitution level is ≤2.5%
Copyright (c) 2026 Asroful Anam, Arie Taveriyanto https://creativecommons.org/licenses/by-sa/4.0
Gap Score Analysis Indikator Transportation UI GreenMetric pada Perguruan Tinggi Vokasi: Studi Kasus Politeknik Negeri Medan
Sustainable transportation is one of the key indicators in the UI GreenMetric ranking system, reflecting a university’s commitment to reducing carbon emissions and promoting sustainable campus development. This study aims to evaluate the achievement of the Transportation (TR) indicators in the UI GreenMetric at Politeknik Negeri Medan and identify improvement priorities based on the gap level for each indicator. A descriptive quantitative approach with a descriptive-evaluative method was employed. Data were collected through field surveys, observations of transportation facilities, vehicle counts, parking area measurements, and reviews of institutional documents and the UI GreenMetric 2025 assessment instrument. Data were analyzed using Gap Score Analysis, comparing actual scores with the maximum scores established by UI GreenMetric. The results revealed that Politeknik Negeri Medan achieved a Transportation score of 372.5 points, equivalent to 20.69% of the maximum score of 1,800 points. Campus mobility remains highly dependent on motorized vehicles, with a vehicle-to-population ratio of 0.18 and parking areas occupying 9.54% of the total campus area. Furthermore, the campus has not yet provided shuttle services, zero-emission vehicles, or information technology-based transportation systems. The Gap Score Analysis identified TR2 as the indicator with the highest gaps. Therefore, future transportation development should prioritize low-emission transportation modes, private vehicle reduction programs, and smart mobility implementation
Copyright (c) 2026 Nurkhasanah Rina Puspita, Soraya Muthma Innah Nasution, Veriza Agistin, Frans Tomy Syahputra Butarbutar https://creativecommons.org/licenses/by-sa/4.0
Evaluasi Jaringan Sistem Pipa Gua Pulejajar Menggunakan EPANET 2.2: Solusi Irigasi Berkelanjutan di Kawasan Karst Gunungkidul
The karst region of Gunungkidul Regency is characterized by highly permeable limestone formations that cause rainwater to rapidly infiltrate into the ground, resulting in limited surface water availability. Pulejajar Cave, located in Jepitu Village, Girisubo District, Gunungkidul Regency, serves as an important groundwater source utilized to irrigate approximately 200 hectares of agricultural land. This study aims to evaluate the hydraulic performance of the Pulejajar Cave water distribution network and determine the optimal pipe dimensions using EPANET 2.2. The data employed in this study include the existing distribution network map, pipe dimensions and characteristics, elevation data, and irrigation water demand of 1.45 L/s/ha. Hydraulic simulations were conducted to analyze flow rate, velocity, pressure, and network optimization requirements.The results indicate that the total water supply from Pulejajar Cave reaches 2,738.98 L/s, while the total irrigation water demand is 1,031.95 L/s, resulting in a surplus of 1,707.03 L/s or 165.41% above the required demand. Despite this substantial water availability, the evaluation of the existing network revealed several pipe sections that did not satisfy the hydraulic criteria for HDPE pipes. In particular, Pipe Puncung 1 exhibited a flow velocity of 9.03 m/s, significantly exceeding the recommended maximum limit of 3.0 m/s. Through pipe dimension optimization, the diameter of Pipe Puncung 1 was increased from 90 mm to 200 mm, successfully reducing the flow velocity to 1.83 m/s, which complies with the recommended design standards. Further optimization of other critical pipe segments also improved hydraulic performance, enhanced distribution efficiency, and minimized the risk of infrastructure deterioration. Therefore, EPANET 2.2 proved to be an effective tool for evaluating and optimizing water distribution networks, supporting the sustainability of irrigation systems in the karst region of Gunungkidul
Copyright (c) 2026 Muchamad Arif Budiyanto, Ratih Nurmala Saridewi, Afnan Juli Arochma https://creativecommons.org/licenses/by-sa/4.0
Pemodelan dan Prediksi Pengeluaran Bulanan Mahasiswa Berbasis Algoritma Ordinary Least Squares dalam Bahasa Pemrograman C++
Financial management is a common challenge faced by students living away from home, especially those who often run out of pocket money before the end of the month. This condition is not always caused by consumptive behavior, but also due to a lack of planning and a structured expenditure prediction system. This study developed a financial analysis program based on the C++ programming language with an object-oriented programming (OOP) approach that implements the Ordinary Least Squares (OLS) algorithm to model and predict students' monthly expenses based on the amount of pocket money they receive. The research data were obtained from 30 students with pocket money ranging from Rp 1,100,000 to Rp 3,500,000 per month, which reflects the real conditions of students in medium-large cities in Indonesia. Descriptive statistical analysis shows that on average, students spend approximately 82.9% of their pocket money each month. The modeling results show a regression equation Ŷ = Rp 119,867 + 0.8221 × X with a correlation coefficient of r = 0.9979 and a determination coefficient of R² = 0.9957, meaning that the pocket money variable is able to explain 99.57% of the variation in student expenditure. The F-test produces F-calculated = 6,732.45, which far exceeds F-table = 4.20 at a significance level of 5%, proving the model is statistically significant. Accuracy evaluation using MAE produces a value of Rp 18,142 (approximately 1% of the average expenditure) and an RMSE of Rp 23,457. It was also found that the marginal propensity to consume (MPC) phenomenon decreases with increasing pocket money, consistent with the economic theory of consumption. This study proves that the OLS algorithm implemented in C++ is an effective, accurate, and efficient tool for analyzing and predicting student financial patterns computationally.
Copyright (c) 2026 Alisha Zulfa Salsabila, Talitha Falakh Tasya, Lina Azaria, Ilham Dwijokangko, Imam Prayogo Pujiono https://creativecommons.org/licenses/by-sa/4.0
Redesain Antarmuka Pengguna Situs Web Bimbingan Belajar Sinar Education Menggunakan Metode Design Thinking dan System Usability Scale (SUS)
This study aimed to redesign the mobile user interface of the Sinar Education admin panel, an educational tutoring institution in Tambun Selatan, Bekasi Regency. The existing admin panel displayed desktop-oriented data tables that, when accessed on mobile devices, resulted in truncated columns requiring horizontal scrolling, inconsistent action button placement across pages, and a persistent sidebar consuming screen space. The redesign focused on five main pages: dashboard, admin management, applicant list, student management, and payment management. The study employed Design Thinking through five stages (empathize, define, ideate, prototype, test) combined with System Usability Scale (SUS) evaluation before and after the redesign on 10 administrators. The mean SUS score increased from 53.25 (median 55, OK category) to 81.75 (median 82.5, good to excellent category), an improvement of 28.50 points. The Wilcoxon Signed-Rank Test confirmed that this improvement was statistically significant (W=3, p=0.0098, effect size r=0.89). The greatest improvements were observed in workflow clarity and perceived complexity. This study suggests that card-based layouts replacing columnar tables and hamburger menus replacing persistent sidebars have the potential to improve perceived usability for mobile admin panels in nonformal education contexts. This study measured perceived usability via SUS rather than objective task performance, and generalization of the findings should take this limitation into account
Copyright (c) 2026 Desman Dwi Saputra, Andika Hartanta, Akriz Alam Annaba', Dafa Alfauzi, Garno Garno https://creativecommons.org/licenses/by-sa/4.0
Pengembangan Pembelajaran Fisika Berbasis Proyek untuk Meningkatkan Keterampilan Proses Sains: Systematic Literature Review
This study aims to synthesize and analyze various strategies for enhancing Science Process Skills (SPS) in physics education based on a literature review of several previous research findings. Science process skills are a key element in physics learning that views science not only as a product of facts and theories but also as a research process through observation and experimentation. The method used in this article is a systematic literature review by analyzing 15 research articles covering the use of learning models such as Problem-Based Learning (PBL), guided inquiry, STEAM, and the utilization of digital media such as e-modules. According to Rachmat Rizaldi, the results of the analysis indicate that the application of active learning models significantly improves students' SPS with varying effectiveness scores, where the use of PBL-based e-modules recorded an effectiveness score of 75.41. Furthermore, a positive correlation was found between school accreditation status and students' SPS achievement levels, with A-accredited schools showing higher performance compared to B and C-accredited schools. This study concludes that the integration of innovative learning models, digital media, and the development of scientific attitudes is the most effective strategy to optimize SPS. The implications of this research are expected to serve as a reference for educational practitioners in designing more adaptive and comprehensive physics learning tools.
Copyright (c) 2026 Nabila El Shofy, Sri Jumini https://creativecommons.org/licenses/by-sa/4.0
Penerapan Biologi Etika dalam Proses Fermentasi Pembuatan Pupuk Organik Cair Berbahan Dasar Air Kelapa “Cocos nucifera”
This study is motivated by the high volume of coconut water (Cocos nucifera) waste that has not been optimally utilized, despite containing natural nutrients such as sugars, minerals, and bioactive compounds with potential as liquid organic fertilizer (LOF) material. This condition leads to environmental problems in the form of organic waste accumulation and the loss of potential economic value from local resources. The aim of this study is to analyze the application of biological ethics in the fermentation process of coconut water-based LOF and its impacts on environmental, economic, and agricultural sustainability aspects. The research employed an experimental approach using anaerobic fermentation assisted by Lactobacillus sp. and Saccharomyces cerevisiae over 14 days. The observed parameters included pH changes and microbial activity during the fermentation process. The results indicated a gradual decrease in pH, reflecting optimal fermentation activity and the formation of organic acids that enhance nutrient availability. From a bioethical perspective, the utilization of coconut water as LOF provides positive impacts, including waste reduction, increased economic value of organic residues, and support for sustainable agriculture practices. In addition, this process encourages community participation in managing local resources in an environmentally responsible manner. Therefore, coconut water-based LOF has the potential to serve as an innovative and sustainable solution for organic farming systems.
Copyright (c) 2026 Wiwik Romauli Nababan, Maya Febrina Sinaga, Nella Juriska Raja GukGuk, Nurbaity Situmorang, Khairiza Lubis https://creativecommons.org/licenses/by-sa/4.0
Analisis Konsep Fisika pada Penyinaran Buah Naga
Artificial lighting in dragon fruit cultivation involves several physics concepts, particularly light intensity, wavelength, lighting duration, energy conversion, and sensor-based lighting control systems. Among these concepts, this article focuses on light intensity, LED wavelength, lighting duration, and the use of light sensors in automation systems. Dragon fruit (Hylocereus spp.) is a prickly cactus plant originally from Central America and is now widely cultivated in Indonesia. One of the main challenges in dragon fruit cultivation is the limited flowering and fruiting season, which occurs only during certain periods. This study aims to analyze the application of physics concepts in artificial lighting systems to improve the productivity and quality of dragon fruit. The method used in this study is a literature review of relevant previous research. The findings indicate that the use of LED lamps with specific light intensities and wavelengths can stimulate photosynthesis, flowering, and the formation of bioactive compounds such as flavonoids and anthocyanins. In addition, the use of light sensors, solar panels, and Internet of Things-based systems supports energy efficiency and automatic lighting control. Therefore, the application of physics concepts in dragon fruit lighting plays an important role in the development of productive and sustainable smart agriculture.
Copyright (c) 2026 Arinda Salsa Bella, Zilfiyatul Makida, Sudarti Sudarti, Kendid Mahmudi https://creativecommons.org/licenses/by-sa/4.0
Pemanfaatan Tepung Ampas Kopi Robusta (Coffea canephora l.) sebagai Substitusi Tepung Terigu dalam Pembuatan Brownies Kukus
Indonesia is recognized as one of the largest coffee producers in the world, with robusta as one of its leading varieties. Based on data from the Central Statistics Agency (2023), Indonesian coffee exports in 2023 reached USD 915.92 million with a total volume of 276,280.8 tons. The increasing coffee consumption has led to a significant rise in coffee waste, particularly coffee grounds. Several studies have shown that coffee grounds contain high fiber content and possess considerable antioxidant potential. Therefore, coffee grounds have strong potential to be utilized as a substitute ingredient in bakery products, especially in brownies formulation. This study was conducted in October 2024 at the PHP Laboratory of Politeknik Negeri Jember. The research employed an experimental method using a Completely Randomized Design (CRD) with a non-factorial model. The treatments consisted of variations in coffee ground flour substitution levels in brownie formulations. Organoleptic evaluation was conducted based on five parameters, namely taste, aroma, texture, color, and overall acceptance, using a Likert scale (1–5) with 32 panelists. The collected data were analyzed using ANOVA followed by the Honestly Significant Difference (HSD) test at a 5% significance level. The results indicated that treatment O2 showed the highest preference in several parameters, particularly taste (4.38), color (4.06), and overall acceptance (4.03). These findings demonstrate that robusta coffee ground flour substitution significantly affects the organoleptic characteristics of brownies. Therefore, coffee grounds can be considered a potential alternative ingredient for developing value-added bakery products based on food waste utilization
Copyright (c) 2026 Rizky Nirmala Kusumaningtyas, Wildhatul Aluf Fitriatin, Setyo Andi Nugroho, Ujang Setyoko https://creativecommons.org/licenses/by-sa/4.0
Penerapan Metode Star Rating pada Evaluasi Keselamatan Jalan (Studi Kasus Ruas Jalan Frans Seda Kota Kupang)
Road safety is an essential component of a sustainable transportation system. Kupang City, as the capital of East Nusa Tenggara Province, has experienced a significant increase in vehicle volume, which contributes to a higher risk of traffic accidents, particularly along Frans Seda Road. This study aims to evaluate the road safety risk level of this road segment using the International Road Assessment Programme (iRAP) methodology. The research employed a quantitative approach through direct field surveys, utilizing a 100-meter road segmentation technique. Each segment was assessed based on physical road safety parameters, including lane width, median condition, road surface quality, traffic signs and markings, lighting facilities, pedestrian crossings, and sidewalk availability. The collected data were processed using the iRAP system to generate the Star Rating Score (SRS), which is converted into a star rating scale (1–5) for each road user category. The results indicate that segments 22A and 22B obtained a 1-star rating for all road user types, indicating a very high risk level. After simulated infrastructure improvements, the rating increased to 3 and 4 stars, demonstrating a significant improvement in road safety conditions. These findings confirm that the iRAP method is effective for identifying road safety risks and provides a quantitative basis for evidence-based infrastructure improvement planning.
Copyright (c) 2026 Varda Marietta Adam, Imam Basuki https://creativecommons.org/licenses/by-sa/4.0
Analisis Statistik Curah Hujan Terhadap Suhu dan Kelembapan di Provinsi Banten Tahun 2016-2024
Rainfall is one of the climate elements influenced by various factors, including air temperature and humidity. Banten Province, with diverse geographical conditions, has varying rainfall patterns across its regions. This study aims to analyze the relationships between air temperature and humidity and rainfall in Banten Province during the 2016–2024 period using three statistical methods. Data were obtained from four stations of the Meteorology, Climatology, and Geophysics Agency (BMKG), namely the Climatology Station of South Tangerang, the Meteorology Station of Serang, the Meteorology Station of Curug, and the Geophysics Station of Tangerang, and were retrieved from the Central Statistics Agency (BPS). The analyses used include descriptive, multiple regression, and time-series analyses. The results of the descriptive analysis indicate diverse climate conditions across stations, with average air temperatures ranging from 27.04°C to 28.76°C, humidity ranging from 77.50% to 82.73%, and rainfall ranging from 115.51 mm/year to 194.87 mm/year. The multiple regression analysis results indicate that the influence of air temperature and humidity on rainfall is weak to moderate, with coefficient of determination values ranging from 11.46% to 54.61%. The time series analysis indicates a similarity in pattern between the predicted and actual rainfall values, with the highest degree of conformity found at the Meteorology Station of Curug. Overall, rainfall in Banten Province is fluctuating and influenced by the complexity of interactions among various natural climate factors.
Copyright (c) 2026 Rakha Mahardika Yudana, Tubagus Hafid, Angga Sutja Putra https://creativecommons.org/licenses/by-sa/4.0
Sistem Informasi Penerimaan Beasiswa KIPK Mahasiswa Institut Karya Mulia Bangsa (IKMB) Berbasis Website
Scholarships are financial assistance awarded to support education, typically to students with academic achievements and those from economically disadvantaged backgrounds. This program aims to improve educational accessibility and ensure continuity of learning opportunities. The Karya Mulia Bangsa Institute (IKMB) has established a scholarship program for outstanding students as part of efforts to enhance human resource quality in Semarang Regency. However, the dissemination of scholarship information remains limited, making it difficult for students to obtain timely, accurate information on registration procedures. This study aims to develop a web-based scholarship information system that integrates infographic technology to enhance information accessibility and presentation. The system development approach is implemented in the IKMB campus environment as the research site and data collection location. The developed system is expected to provide structured, interactive, and easily accessible scholarship information for students. The results indicate that the developed information system can facilitate students in accessing scholarship information and completing online registration processes without the need to visit the registration site directly. Therefore, this system contributes to improving the effectiveness of information dissemination and the efficiency of scholarship administrative processes within IKMB
Copyright (c) 2026 Rudi Hermawan, Supatman Supatman https://creativecommons.org/licenses/by-sa/4.0
Tanggung Jawab Profesional dalam Keamanan Cyber Perspektif Etika dan Hukum
Cybersecurity is an essential aspect of protecting data and digital infrastructure in the era of rapid technological transformation. The increasing number of cyber threats requires professional responsibility that goes beyond technical aspects and considers ethical and legal dimensions. This study aims to examine professional responsibility in cybersecurity from ethical and legal perspectives and to analyze the challenges in its implementation. This research employs a qualitative approach using literature review and case study methods. Data were collected through the analysis of scientific journals, cybersecurity regulations, and organizational policies, as well as semi-structured interviews with cybersecurity professionals, including system administrators, information security analysts, and IT security practitioners. Data analysis used thematic analysis to identify patterns of professional responsibility in cybersecurity practices. The findings indicate that professional responsibility in cybersecurity includes the protection of personal data, compliance with regulations such as the General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA), and the implementation of professional codes of ethics such as the ISC² Code of Ethics and the EC-Council Code of Ethics. In addition, the study reveals that the main challenges lie in ethical hacking practices, user activity monitoring, and vulnerability management, which create dilemmas between security, privacy, and legal compliance. This study concludes that integrating ethics, law, and organizational policies is essential to creating a secure and responsible cybersecurity ecosystem. Professional codes of ethics play a crucial role in guiding ethical behavior and maintaining integrity in facing increasingly complex cyber threats
Copyright (c) 2026 Amiruddin Amiruddin, Mohd Wildan Qasthari, Muhammad Nazar, Nov Indra Adiwira Suryantyo, Rahmadani Rahmadani, Raja Rahmad Hafizhul Manik, M. Fadil Nasution https://creativecommons.org/licenses/by-sa/4.0
Efektivitas Allicin Bawang Putih terhadap Fusarium oxysporum f. sp. raphani pada Lobak In Vitro: Systematic Literature Review
Fusarium wilt caused by Fusarium oxysporum f. sp. raphani is one of the major constraints in radish cultivation, as it infects the plant vascular system and leads to significant yield losses. Conventional control methods mainly rely on synthetic fungicides; however, their long-term use may cause environmental damage and the development of pathogen resistance. Therefore, there is a need for environmentally friendly alternatives such as allicin derived from Allium sativum L. This study aims to evaluate the effectiveness of allicin as a biological control agent against F. oxysporum f. sp. raphani using a systematic literature review approach. This study employed a qualitative method based on a systematic literature review of 18 relevant scientific articles. Data were analyzed using thematic analysis focusing on antifungal activity, mechanisms of action, and concentration effectiveness of allicin. The data sources were obtained from peer-reviewed journals, both national and international, indexed in reputable scientific databases. The synthesis results indicate that allicin exhibits significant antifungal activity against Fusarium spp. through sulfhydryl (-SH) enzyme inhibition, oxidative stress induction, and disruption of fungal cell membranes. Its effectiveness is influenced by concentration and extraction methods. However, specific studies on F. oxysporum f. sp. raphani remain limited, indicating a research gap. In conclusion, allicin has strong potential as an environmentally friendly biological control agent for inhibiting the growth of F. oxysporum f. sp. raphani. This study contributes to the development of sustainable plant disease management strategies based on natural compounds
Copyright (c) 2026 Najwa Luthfiah Khanza https://creativecommons.org/licenses/by-sa/4.0