Journal Title : Jurnal Sains dan Teknologi Language : Indonesia and English e-ISSN : 2828-4984 p-ISSN : 2828-4992 Frequency : 6 issues per year (February, April, June, August, October and December) DOI : doi.org/10.55123/insologi Editor-in-chief : Angelia Putriana Email : jurnal.insologi@gmail.com Publisher : Yayasan Literasi Sains Indonesia Citation Analysis : Google Scholar Jurnal Sains dan Teknologi yang disingkat INSOLOGI merupakan Jurnal yang diterbitkan 6 (enam) kali dalam setahun, yaitu pada bulan Februari, April, Juni, Agustus, Oktober dan Desember oleh Yayasan Literasi Sains Indonesia. Jurnal Sains dan Teknologi merupakan jurnal yang dapat diakses secara terbuka bagi para Peneliti, Dosen dan Mahasiswa yang ingin mempublikasikan hasil penelitiannya pada bidang ilmu sains dan teknologi. Jurnal Sains dan Teknologi juga merupakan wadah informasi berupa hasil penelitian, studi kepustakaan, gagasan, aplikasi teori dan kajian analisis kritis dibidang perkembangan sains dan teknologi yang meliputi bidang ilmu pengetahuan alam (biologi, kimia, dan fisika), matematika dan statistik, perikanan/kelautan, kesehatan dan farmasetika, pertanian (agribisnis dan agroteknologi), keteknikan (teknik sipil, mesin, arsitektur, lingkungan, dan pertambangan), pengembangan/desain miniatur/rancang bangun dan bidang ilmu lainnya yang relevan dengan penelitian sains dan teknologi.
Hak cipta pada setiap artikel adalah milik penulis. Penulis mengakui bahwa INSOLOGI (Jurnal Sains dan Teknologi) sebagai publisher yang mempublikasikan pertama kali dengan lisensi Creative Commons Attribution 4.0 International License. Penulis dapat memasukan tulisan secara terpisah, mengatur distribusi non-ekskulif dari naskah yang telah terbit di jurnal ini kedalam versi yang lain, seperti: dikirim ke respository institusi penulis, publikasi kedalam buku, dan lain-lain. Dengan mengakui bahwa naskah telah terbit pertama kali pada INSOLOGI (Jurnal Sains dan Teknologi).
Transformasi Pertanian Presisi Berbasis Digital di Indonesia: Tinjauan Sistematis Peluang dan Tantangan
Precision agriculture has emerged as a key solution to address food security challenges, resource efficiency, and agricultural sustainability in Indonesia. This study aims to analyze the opportunities and challenges of adopting digital applications in precision agriculture through a systematic literature review using the PRISMA approach. Data were obtained from eight scientific articles published between 2021–2025 and one additional relevant supporting article. The findings indicate that digital applications in precision agriculture provide significant opportunities for improving productivity, optimizing input use, and enhancing information access. However, several challenges persist, including low digital literacy among farmers, limited internet infrastructure in rural areas, high technological investment costs, resistance to adoption, socio-economic disparities, and inadequate policy support. Proposed solutions include the development of user-friendly application interfaces, digital literacy training programs, provision of affordable internet access, subsidized devices, cross-sector collaboration, and evidence-based regulatory policies. This review concludes that inclusive, participatory, and sustainable digital transformation is essential to advance agricultural modernization in Indonesia.
Copyright (c) 2025 Iwan Patria https://creativecommons.org/licenses/by/4.0
Kualitas Morfologi Sel Asites Setelah Dilakukan Fiksasi Alkohol 96% dan NBF 10% pada Sediaan Sitologi Pewarnaan Hematoksilin-Eosin (HE)"
Ascitic fluid is an important specimen in diagnostic cytology for detecting malignancy and inflammation within the peritoneal cavity. The accuracy of cytological interpretation depends on cellular morphology, which is influenced by the type and effectiveness of fixation. Fixatives help preserve cellular integrity prior to Hematoxylin–Eosin (HE) staining. Alcohol 96% acts as a coagulative fixative that rapidly denatures proteins, whereas 10% Neutral Buffered Formalin (NBF) is a non-coagulative fixative that forms protein cross-links, providing greater structural stability but requiring longer fixation time. This study aimed to evaluate and compare the morphological quality of ascitic fluid cells fixed with 96% alcohol and 10% NBF on HE-stained cytological preparations to determine the most optimal fixative. A quantitative comparative design with a laboratory-based observational approach was used. Six ascitic fluid specimens were fixed with 96% alcohol for 15 minutes and 10% NBF for 24 hours. Thin smear preparations were stained with HE and assessed for nuclear clarity, cytoplasmic integrity, and staining artifacts using an ordinal score of 1–4. Data were analyzed using the Mann–Whitney U test at a 95% confidence level (α = 0.05). Results showed that 96% alcohol produced clearer nuclear details, sharper cytoplasmic borders, and fewer artifacts than 10% NBF. Although NBF provided stable cellular structures, nuclei appeared darker and cytoplasmic homogeneity decreased due to prolonged fixation. Statistical analysis showed a significant difference (p < 0.05). Thus, 96% alcohol offers superior ascitic cell morphology and serves as an efficient alternative fixative for body fluid cytology.
Copyright (c) 2025 Yohanes Ardian, Eviomitta Rizki, Adinugraha Amarullah, Marinta Marinta https://creativecommons.org/licenses/by/4.0
Teknologi Live Streaming Agency" menjadi "Kapabilitas Inti dan Keunggulan Kompetitif Berkelanjutan Berbasis VRIO pada Live Streaming Agency PT Check Out Time (COT)
This study aims to analyze PT COT's internal factors by identifying its strengths and weaknesses, as well as evaluating its resources and capabilities using a SWOT analysis and the VRIO framework. The research method used was a descriptive qualitative case study approach, with data collected through interviews, observations, and documentation studies. The results indicate that PT COT possesses key strengths in the form of high-quality studios and production equipment, data analytics technology (BICOT), a competent production team, a relevant KOL network, pricing flexibility, content creativity, and strategic partnerships with major brands. However, its weaknesses include limited access to marketplace platforms and low brand awareness. Therefore, the recommended strategy is to strengthen digital marketing to increase brand visibility, expand business partnerships, and continue investing in technology and human resource development. This study confirms that PT COT has a strong internal foundation to compete in the e-commerce live streaming industry, but further optimization is needed to build a sustainable competitive advantage.
Copyright (c) 2025 Brian Kalti Pranata, Edi Hamdi, Dimas Angga Negoro, Muhammad Dhafi Iskandar https://creativecommons.org/licenses/by/4.0
Kualitas Air Tanah dan Peta Sebaran Kualitasnya di Sekitar Tempat Pembuangan Akhir (TPA) Galuga
The increasing population has resulted in a higher volume of waste at the Galuga landfill, generating leachate that potentially contaminates the surrounding shallow groundwater. Groundwater serves as a crucial source for domestic needs; thus, its contamination poses serious health risks and threatens ecological balance. This study aims to analyze the quality of shallow groundwater around the Galuga landfill and to map its spatial distribution as a foundation for sustainable environmental monitoring and management. The research methods included collecting groundwater samples from seven representative points along the groundwater flow direction, analyzing physical parameters (temperature, pH, turbidity), chemical parameters (Fe, Mn, NO₃⁻, and Cl⁻), and microbiological parameters (E. coli and total coliform), followed by calculating the Water Quality Index (WQI) using the NSF-WQI method. The findings revealed that several parameters, particularly Fe, Mn, E. coli, and total coliform, exceeded the permissible drinking water standards established by the Indonesian Ministry of Health Regulation No. 492/Menkes/Per/IV/2010. The average WQI score of 61.30 indicates a moderate water quality category. Therefore, it can be concluded that the shallow groundwater surrounding the Galuga landfill has been contaminated and is not suitable for direct consumption as drinking water. Consequently, it is recommended to implement more effective leachate management systems and conduct regular groundwater quality monitoring to prevent further contamination and safeguard community health and environmental sustainability.
Copyright (c) 2025 Sri Melianti Rahayu, Farid Ramadhan, Teti Syahrulyati, Sutanto Sutanto https://creativecommons.org/licenses/by/4.0
Model Data Mining untuk Penetapan Plafon Kredit dengan Algoritma C4.5
Manual credit limit determination in distributor companies is often subjective and inconsistent, increasing the risk of bad debts. This research aims to design an objective data mining model to support customer credit limit decisions at CV. XYZ. The method used is the Decision Tree with the C4.5 algorithm, applied to 66 historical records of customer payment data. Data analysis was performed by calculating Entropy and Information Gain values to build the decision tree, which was then validated using RapidMiner Studio software. The research successfully built a valid and consistent classification model. The "Piutang" (receivables/transaction volume per invoice) attribute was identified as the main determinant (root node), followed by the "Pembayaran" (payment history) attribute as a branch node. This model generates three interpretable decision rules, including the discovery of a risky pattern where high-volume customers with poor payment histories are associated with large credit limits. The proposed model can be implemented as a decision support tool to standardize credit policies, reduce subjectivity, and minimize the company's financial risk.
Aulia Rizky Muhammad Hendrik Noor Asegaff
Copyright (c) 2025 Frans Mikael Sinaga, Jefri Junifer Pangaribuan, Aulia Rizky Muhammad Hendrik Noor Asegaff, Wenripin Chandra, Riche Riche https://creativecommons.org/licenses/by/4.0
Hubungan Tingkat Stres dengan Keteraturan Siklus Menstruasi pada Mahasiswi S1 Kebidanan Universitas Muhammadiyah Semarang
Background: Menstrual cycle regularity is an important indicator of women's reproductive health. Factors such as stress, lifestyle, and academic activities can affect menstrual cycle regularity, especially in female students who face high demands during their studies. Objective: This study aims to analyze menstrual cycle regularity and the factors that influence it in undergraduate Midwifery students at Muhammadiyah University of Semarang. Method: Descriptive quantitative research with a cross-sectional approach was conducted on 77 female students. Data were collected using a questionnaire and analyzed univariately to describe the frequency distribution of menstrual cycle regularity. Results: Based on the research that has been done, it was found that 49 female students, or 63.6% of respondents, had regular menstrual cycles, while 28 female students, or 36.4%, experienced menstrual irregularities. Students who experienced regular menstrual cycles and experienced low stress were 31 respondents, while those who were irregular were 4 respondents, then students who experienced low stress and regular cycles were 16 respondents followed by those who were irregular as many as 11 respondents, for students who experienced severe stress and experienced regular menstrual cycles as many as 2 people, the remaining 13 people experienced irregular menstrual cycles. Conclusion: There is a significant relationship between stress levels and menstrual cycle regularity, this is proven by the sig value (p-value <0.05) which is 0.000.
Copyright (c) 2025 Sherkia Ichtiarsi Prakasiwi, Sutiara Sinta https://creativecommons.org/licenses/by/4.0
Sistem Absensi Berbasis Deteksi Wajah dengan Pendekatan Eksperimen
This study compares the accuracy of two face detection algorithms, Haar Cascade and Multi-task Cascaded Convolutional Networks (MTCNN), to determine the most suitable method for implementation in a facial recognition–based attendance system. The evaluation was conducted through a series of tests under common real-world conditions, including variations in distance, lighting intensity, and face orientation. Each algorithm was assessed using performance metrics such as Precision, Recall, F1-Score, and processing time to provide a comprehensive understanding of their strengths and limitations. The results indicate that MTCNN consistently achieves higher accuracy across nearly all tested scenarios, particularly under low-light conditions and when the face is not oriented frontally. In contrast, Haar Cascade demonstrates faster processing time but experiences significant decreases in accuracy under non-ideal conditions typically found in practical applications. Based on these findings, MTCNN is considered more suitable for attendance systems that require high accuracy and robustness to environmental variations, while Haar Cascade may be preferred in applications where computational efficiency and speed are the primary considerations.
Copyright (c) 2025 Meryatul Husna, Kinarta Ketaren, Sharfina Faza , Orli Binta Tumanggor, Aprilza Aswani https://creativecommons.org/licenses/by/4.0
Konsumsi Jantung Pisang sebagai Galaktagog Lokal terhadap Peningkatan Berat dan Tinggi Badan Bayi Usia 0–6 Bulan: A Quasi Experimental
The banana blossom has significant potential as a local superfood that can enhance both the production and quality of breast milk (ASI). Its nutritional components—including plant-based proteins, fiber, minerals, and phytonutrients—make it a safe, natural, and easily accessible alternative source of nutrition across various regions of Indonesia. This study is particularly important given the persistently high prevalence of nutritional problems among infants and the low rate of exclusive breastfeeding in the country.The development of banana blossom–based food innovations is expected to serve as an effective strategy to strengthen household food security and address nutritional challenges among vulnerable groups, particularly breastfeeding mothers and infants in their early stages of life. The purpose of this study is to examine the potential effects of banana blossom consumption on optimizing the growth and development of infants aged 0–6 months. This research employs an experimental design using a pre–post-test control group method. The participants consist of 40 breastfeeding mothers with infants aged 0–6 months within the working area of Puskesmas Stabat, Medan. The intervention group received banana blossom consumption every three days for four weeks. The results show that banana blossom consumption had a significant effect on increasing infants’ weight and height, indicating its potential contribution to sustainably improving infant nutritional status.
Copyright (c) 2025 Wilda Yunita, Nurhaida Br. Kaban https://creativecommons.org/licenses/by/4.0
Evaluasi Dampak ASI Non-Eksklusif dan Gaya Pengasuhan Nutrisi terhadap Risiko Stunting Anak di Komunitas Nelayan Medan Labuhan
Stunting is a serious public health issue in Indonesia, with long-term impacts on children’s physical and cognitive development. Fishing communities often face challenges in accessing adequate nutritional information and resources, making it crucial to examine the contributing factors to stunting in these environments. The high prevalence of stunting in coastal areas of Medan, including Medan Labuhan, underscores the urgency of this study. Factors such as low parental education, limited nutritional knowledge, and poor economic conditions contribute significantly to the high incidence of stunting. In addition, non-exclusive breastfeeding practices and suboptimal nutritional parenting styles serve as major risk factors affecting child growth. This study aims to evaluate the impact of non-exclusive breastfeeding and nutritional parenting styles on the risk of stunting among children under five in the fishing community of Medan Labuhan. A quantitative approach with a cross-sectional design was employed, involving 100 respondents selected purposively from Kampung Nelayan Indah, Medan Labuhan. Data were collected through structured questionnaires and anthropometric measurements of children aged 24–59 months. The data were analyzed using chi-square and logistic regression tests. The results indicated that most variables—such as exclusive breastfeeding, breastfeeding frequency, age of complementary feeding introduction, caregiver, number of food types, and daily meal frequency—were not significantly associated with children’s nutritional status (p > 0.05). However, food refusal behavior (≥ 3 times/day) showed a significant association (p < 0.05), indicating that children who frequently refused food were more likely to experience poor nutritional status.
Copyright (c) 2025 Widyastuti Widyastuti, Herny Misnita, Yulinda Aswan https://creativecommons.org/licenses/by/4.0
Analisis Deteksi Penyakit Daun Pisang Menggunakan Ekstraksi Fitur CNN (MobileNetV2) dan Klasifikasi SVM
Banana plants (Musa spp.) are one of the leading horticultural commodities in Indonesia that have high economic value and play an important role in national food security. However, banana productivity often decreases due to attacks by various diseases such as Sigatoka, Cordana, and Pestalotiopsis infections that can spread quickly. Early detection of these diseases is crucial to prevent greater losses. This study aims to develop a banana plant disease detection system based on digital image processing with the Support Vector Machine (SVM) algorithm. The research method includes the stages of banana leaf image acquisition, pre-processing using color segmentation, color and texture feature extraction, and disease type classification with the SVM algorithm. The test results show that the developed system is able to recognize banana leaf diseases with an accuracy of 97.8%, precision of 97%, and recall of 98%. These findings prove that the application of digital image processing and the SVM algorithm is effective in detecting banana plant diseases. This system is expected to be a fast, efficient, and accurate diagnostic tool for farmers to increase the productivity and quality of banana harvests.
Copyright (c) 2025 Yuyun Yusnida Lase, Lampson Pindahaman Purba, Santi Prayudani, Arif Ridho Lubis, Hikmah Adwin Adam https://creativecommons.org/licenses/by/4.0
Kuantifikasi Prioritas Pengembangan Fitur Aplikasi dengan Kerangka Outcome-Driven Innovation: Studi Kasus Aplikasi Pembelajaran Bahasa Asing
This study aims to identify user satisfaction, importance, and development priorities for the English Language Speech Assistant (ELSA) application by integrating Outcome-Driven Innovation (ODI) and sentiment analysis methods. Using reviews collected from the Google Play Store via ScrapeStorm, two sentiment models were applied. Namely, Valance Aware Dictionary and sEntiment Reasoner (VADER) for overall sentiment polarity and Aspect-Based Sentiment Analysis (ABSA) for feature-spesific sentiment extraction. The result show that 86.23% of user reviews express positive sentiments, reflecting high satisfaction with ELSA’s functionality and learning experience. Correlation testing confirms strong validity between VADER and ABSA models (r = 0.98), and moderate alignment with user rating (r 0.55), confirming both construct and external validity. The ODI analysis further identifies Pronunciation as the highest-priority aspect (opportunity = 12.1), followed by Learning (opportunity = 2.6), highlighting key areas for innovation. Other aspects, such as Support and Subscription, show balanced performance with low opportunity values. The integration of ODI and sentiment analysis provide a data-driven framework for product improvement, enabling developers to prioritize enhancements based on user-perceived value. The findings contribute to informed strategic decision-making in the development of digital language-learning applications.
Copyright (c) 2025 Kevin Bastian Sirait, Nicholas Dickson, Romindo Romindo https://creativecommons.org/licenses/by/4.0
Design and Development of a Mobile-Based “Sembako” Application Using Flutter
The rapid development of information technology has transformed the way people conduct business transactions, shifting from traditional face-to-face methods to online systems through e-commerce platforms. However, challenges remain in ensuring equitable access to essential goods, particularly for communities with limited distribution networks. This study aims to design and develop a mobile-based Sembako (basic commodities) application using the Flutter framework to improve efficiency, accessibility, and user experience in purchasing daily necessities. The research employed the Waterfall method within the System Development Life Cycle (SDLC), involving stages of planning, analysis, design, implementation, and testing. Data were collected through observation, interviews, and literature studies conducted at an MSME store in Central Jakarta. The system was developed using Dart for programming and Firebase as the database for real-time data management. Results showed that the Sembako application successfully met functional requirements, enabling efficient management of stock, transactions, and digital payments while achieving a high user satisfaction score of 4.82 out of 5 in User Acceptance Testing. The study contributes to the advancement of mobile commerce by offering a practical and scalable solution for digital transformation in MSMEs, although future improvements should integrate loyalty systems and automated customer services.
Copyright (c) 2025 Nadia Nadia, Yulhendri Yulhendri https://creativecommons.org/licenses/by/4.0
Faktor Risiko yang Berhubungan dengan Kejadian Hipertensi pada Masyarakat di Wilayah Kerja Puskesmas Krueng Barona Jaya Kabupaten Aceh Besar Tahun 2025
Hypertension is a non-communicable disease with the highest prevalence in Indonesia, so it is necessary to conduct research on its risk factors. This study aims to determine the risk factors associated with the incidence of hypertension in the community in the working area of ​​the Krueng Barona Jaya Community Health Center, Aceh Besar Regency in 2025. The type of research is descriptive analytic with a case-control design. The sample consisted of 176 respondents, namely 88 cases and 88 controls, who were selected by random sampling. The study was conducted on August 7–12, 2025 through interviews with a structured questionnaire, and data were analyzed using the chi-square test in SPSS. The results showed that 50.0% of respondents were hypertension cases. A total of 58.0% had consumed caffeine, 55.7% were obese, 33.5% had high physical activity, 58.5% had poor diet, and 47.2% had comorbidities. Bivariate analysis showed a significant relationship between caffeine consumption, BMI, physical activity, diet, and comorbidities with the incidence of hypertension. It is recommended that Community Health Centers strengthen health promotion, cadres increase early screening, and the Health Service support community examination and sports facilities.
Copyright (c) 2025 Ayu Vinezia Situmeang, Tahara Dilla Santi, Farrah Fahdhienie https://creativecommons.org/licenses/by/4.0
Evaluasi Kinerja Instalasi Pengolahan Air Limbah Farmasi PT. X
This article aims to evaluate the performance of the wastewater treatment plant (WWTP) operated by the pharmaceutical industry PT. X. The study assesses the effectiveness of wastewater treatment by testing water quality parameters from both the inlet and outlet, as well as analyzing each treatment unit, such as Oil and Scum Separation, Oil and Scum Collection, Equalization and Neutralization Tank, Aeration Tank, Clarifier, Break Tank, Filtration, Final Tank, and Sludge treatment units, including Sludge Collection and Stabilization Tank and Filter Press. Monitoring results show that PT. X’s wastewater meets the established quality standards. However, operational issues were observed, including overflow in the equalization and neutralization tanks, foam formation in the aeration tank, and sludge bulking in the clarifier unit, all requiring corrective actions. Recommended improvements include installing ultrasonic sensors, increasing dissolved oxygen (DO) concentration and the food-to-microorganism (F/M) ratio, and replacing filter media to optimize the treatment process. This evaluation is essential to ensure optimal wastewater treatment performance and compliance with environmental quality standards.
Copyright (c) 2025 Kevin Leonardo Sulistiyo, Wahyu Ugroseno https://creativecommons.org/licenses/by/4.0
Green Synthesis Nanopartikel Perak Menggunakan Ekstrak Daun Pepaya (Carica papaya L.)
Papaya (Carica papaya L.), a plant commonly found in Indonesia, holds potential as an active ingredient in the pharmaceutical field, particularly in the environmentally friendly synthesis of silver nanoparticles. This study explores the ability of papaya leaf extract to act as a natural reducing agent through a green synthesis method, utilizing the flavonoid content it contains. The extract, obtained through an infusion process, was mixed with a 5 mM AgNO₃ solution at a specific ratio, and the formation of nanoparticles was indicated by a change in the solution’s color. Measurement using UV-Vis spectrophotometry at a wavelength of 350 nm showed a maximum absorbance value of 0.684, confirming the formation of silver nanoparticles. Thus, papaya leaf extract is proven to function effectively as a bioreductor in the synthesis process. Green synthesis offers a green alternative for the production of silver nanoparticles that is safer and more environmentally friendly. This research demonstrates great potential in the development of sustainable green technology in Indonesia by utilizing abundant natural resources. The results of this research can serve as a basis for further development in the application of silver nanoparticles in the fields of pharmacy and health, as well as increasing the economic value of papaya plants (Carica papaya L.). This also open up new opportunities for further research.
Copyright (c) 2025 Sefelin Sefelin, Sri Royani, Dian Islamiyati https://creativecommons.org/licenses/by/4.0
Analisis Komparasi Distribusi Keuntungan Penjualan Gabah dan Beras di Kabupaten Musi Rawas
Musi Rawas Regency is one of the regencies that has experienced significant growth in agriculture, especially rice. The choice to sell in the form of grain or rice is a strategic decision for farmers because it concerns production efficiency, potential profits, and risks that must be faced. This study aims to provide a comparative analysis quantitatively and qualitatively of both forms of sales, including considering cost factors, distribution models and supporting institutions in Musi Rawas Regency. The determination of the farmer sample in this study used purposive random sampling of 75 people. The data sources in this study used primary and secondary data The research results show that selling unhusked rice is more profitable for farmers if done directly, with a 100% profit margin (farmer to Bulog). Unhusked rice sales are more profitable because they don't require post-harvest activities. This differs from selling rice, which requires post-harvest handling and therefore incurs costs. There are three profit comparison models for rice sales: 70%/30%, 50%/50%, and 30%/70%. The largest marketing margin is located in marketing channel 1, with a total margin of Rp 5,300, while the smallest total margin is in marketing channel 3, namely Rp 2,000. From the analysis results, it is known that the marketing margin of agricultural products is influenced by the number of marketing institutions involved, transportation costs. High margins do not necessarily indicate inefficiency, but may reflect the high operational costs and risks borne by intermediaries.
Copyright (c) 2025 Ira Primalasari, Vera Octalia https://creativecommons.org/licenses/by/4.0
Analisis Data Pola Musim di Indonesia Menggunakan Data Equivalent Water Height (EWH) dari Satelit GRACE
Indonesia, as a tropical country, exhibits rainfall patterns that are strongly influenced by both global and regional atmospheric dynamics. The seasonal climate system in Indonesia, which consists of the wet season, dry season, and transitional periods, plays a crucial role in water resource management, agricultural activities, and disaster mitigation. To better understand these complex atmospheric and hydrological interactions, climatological parameters such as Equivalent Water Height (EWH) serve as important indicators of terrestrial water storage variability. The application of GRACE and GRACE-FO satellite missions provides a novel approach to monitoring hydrological dynamics through EWH, enabling large-scale and continuous observations of terrestrial water storage changes. The results of this study reveal a strong negative relationship between the Oceanic Niño Index (ONI) and EWH at zero time lag, indicating that El Niño events tend to reduce terrestrial water storage across Indonesia. This simultaneous response suggests that changes in atmospheric circulation during El Niño phases immediately affect hydrological conditions over land. In particular, the reduction in water storage is primarily associated with weakened moisture transport from both the Indian Ocean and the Pacific Ocean, which are the main sources of atmospheric water vapor influencing Indonesia’s climate system. As a result, decreased moisture convergence leads to reduced precipitation and a rapid decline in terrestrial water reserves. Bias evaluation further indicates distinct spatial patterns across the Indonesian region. Negative bias predominantly occurs in Sumatra and Kalimantan, whereas positive bias is more commonly observed in Nusa Tenggara and Maluku. In addition, the RMSE analysis shows that EWH estimates are relatively more accurate in regions with homogeneous rainfall patterns, while their performance decreases in areas characterized by high rainfall variability. These findings highlight the importance of considering regional climatic characteristics when interpreting satellite-based hydrological observations and emphasize the role of large-scale atmospheric–oceanic interactions in shaping terrestrial water storage dynamics in Indonesia.
Copyright (c) 2025 Muhammad Taufiq, Ira Mutiara Anjasmara https://creativecommons.org/licenses/by/4.0
Faktor Risiko yang Berhubungan dengan Stunting pada Balita Usia >6-59 Bulan di Wilayah Kerja Puskesmas Gunung Meriah
Stunting is a serious global problem affecting more than 160 million children under five worldwide. In Aceh Singkil, the stunting rate reached 34.01% (SKI, 2023). This study aims to determine the risk factors associated with stunting in toddlers aged >6–59 months in the Gunung Meriah Community Health Center, Aceh Singkil Regency, in 2025. This study used a descriptive analytical design with a cross-sectional approach. A sample of 98 respondents was selected randomly from the population of mothers with toddlers. Data collection was conducted through interviews and observations using questionnaires and measuring instruments, and analyzed using the chi-square test in the SPSS application. The results showed a stunting prevalence of 38.8%. Factors that had a significant relationship with stunting were complete basic immunization (p = 0.002) and exclusive breastfeeding (p = 0.002). Meanwhile, maternal knowledge, parenting patterns, and information sources did not show a significant relationship. The results of the multivariate analysis showed that immunization has a statistically significant relationship with the incidence of stunting, with a p-value of 0.002 and an OR of 3.846, meaning that toddlers who do not receive immunization have a 3.8 times greater risk of experiencing stunting compared to toddlers who receive complete immunizations. It was concluded that exclusive breastfeeding and complete immunization play an important role in preventing stunting. Therefore, it is recommended that the Health Office strengthen education regarding the importance of exclusive breastfeeding and immunization, as well as encourage parental involvement in monitoring children's growth and development.
Copyright (c) 2025 Erlian Damayani, Ramadhaniah Ramadhaniah, Vera Nazhira Arifin https://creativecommons.org/licenses/by/4.0
Prediktor Obesitas Sentral dan Korelasinya dengan Tekanan Darah Diastolik: Studi Observasional pada Populasi Lansia di Pedesaan
Hypertension is a major health problem among the elderly and is strongly associated with central obesity, which often increases due to physiological changes during aging. Waist circumference (WC) and waist-to-height ratio (WHtR) are recognized as practical anthropometric indicators for assessing central obesity and predicting cardiovascular risks, including elevated blood pressure. This study aimed to examine the relationship between waist circumference and waist-to-height ratio with systolic and diastolic blood pressure among elderly individuals in Cemani Village. This research employed an analytical observational design with a cross-sectional approach involving 69 elderly respondents selected through consecutive sampling. Data on waist circumference, height, and blood pressure were obtained through direct measurements. Statistical analysis was performed using Pearson or Spearman correlation tests based on normality results. The findings showed that most respondents had WC and WHtR values categorized as centrally obese. Waist circumference and WHtR were not significantly associated with systolic blood pressure (p = 0.794; p = 0.824), but both demonstrated significant associations with diastolic blood pressure (p = 0.002; p = 0.001). These results indicate that central obesity, reflected by WC and WHtR, may contribute more strongly to diastolic pressure elevation than to systolic changes. Therefore, routine monitoring of anthropometric indicators among the elderly is essential for early detection and prevention of hypertension.
Copyright (c) 2025 Aristawidya Dwi Rahmadevi, Sudrajah Warajati Kisnawaty, Nur Lathifah Mardiyati https://creativecommons.org/licenses/by/4.0
Pengaruh Berbagai Antecedent dari Green Innovation terhadap Sustainable Performance
Sustainable development is seen as a key tool that has attracted attention from academics, politicians, leaders, and practitioners because of the growing demands from consumers on the environment, organizations, and companies. These entities can use green innovation as a main contribution to sustainable development. This study aims to examine the effect of green innovation as a mediator from green transformational leadership, ethical leadership, green organizational culture, and knowledge management on sustainable performance in construction companies in the Jabodetabek region. Using a quantitative approach and the Partial Least Structural Equation Modeling (PLS-SEM) analysis method, this research collects data from respondents working in the construction sector, with a total of 183 participants. The findings show that green innovation significantly mediates the impact of green transformational leadership, green organizational culture, and knowledge management on sustainable performance. However, ethical leadership does not have a significant effect on green innovation. These results highlight the importance of green innovation as a key link between green transformational leadership and green organizational culture with sustainable performance. The practical implications of this study suggest that construction companies need to develop green innovation through leaders who focus on well-planned project management, including scheduling, budgeting, and resource allocation, as well as monitoring cash flow, project financing, and cost control, which are essential for maintaining the company's financial health and project success.
Copyright (c) 2025 Herman Susanto, Edi Hamdi https://creativecommons.org/licenses/by/4.0
Rancang Bangun Smart Feeder Terintegrasi Monitoring Kualitas Air Bertenaga Surya Berbasis IoT pada Budidaya Perikanan
This study presents the design and implementation of a smart feeder system integrated with real-time water quality monitoring powered by a solar photovoltaic system and based on the Internet of Things (IoT). The system automatically dispenses fish feed and monitors key water quality parameters such as pH, temperature, and Total Dissolved Solids (TDS). The ESP32 microcontroller was used as the main controller, integrated with multiple sensors and an MQTT-based monitoring application. The entire system is powered by a 30 Wp solar panel and a 12 V battery, enabling autonomous operation in remote areas without grid access. Experimental results show that motor rotation speed significantly affects feed distribution. The optimal feeding performance was achieved at medium motor speed with a feed distance of 8 m, ensuring uniform feed dispersion and low energy consumption (±14.4 W). Water quality parameters remained within the ideal range for freshwater aquaculture: pH 6.6–6.9, temperature 27.5–28.8 °C, and TDS 380–450 ppm. The photovoltaic system generated around 90–110 Wh/day, meeting the system’s daily energy demand (±45 Wh/day). This integrated IoT–solar solution demonstrates high efficiency and sustainability, suitable for rural aquaculture applications.
Copyright (c) 2025 Elvinda Bendra Agustina https://creativecommons.org/licenses/by/4.0
Pemanfaatan Ampas Tebu sebagai Adsorben untuk Penyisihan COD pada Limbah Cair Laboratorium
Laboratory wastewater at the Environmental Engineering Study Program of Jember University (UNEJ) is wastewater generated from various practical activities and research involving the use of inorganic and organic chemicals. UNEJ Environmental Engineering laboratory wastewater is used as a means of supporting lectures and research for students and lecturers. The UNEJ Environmental Engineering Laboratory has never conducted tests on the characteristics of the wastewater produced. This study aims to examine the effectiveness of sugarcane bagasse in adsorbing COD levels in laboratory wastewater at various adsorbent heights and activator variations. The initial COD content of the laboratory wastewater was 665 mg/L. The variations in adsorbent height in the adsorption column reactor were 2 cm, 3 cm, 4 cm, and 5 cm, while the variations in sugarcane bagasse adsorbent activators were HCl, H3PO4, KOH, and Na2CO3. Based on the results of the study, the best COD removal efficiency was achieved with a column height variation of 5 cm and a KOH activator variation of 92.05%. The COD content in the initial laboratory wastewater of 665 mg/L after undergoing the adsorption process using bagasse waste adsorbent became 52.9 mg/L.
Copyright (c) 2025 Tika Kumala Sari, Noven Pramitasari, Yeny Dhokhikah, Farid Nauval Nugraha, Nanda Diva Adea Fara https://creativecommons.org/licenses/by/4.0
Uji Aktivitas Antibakteri Propionibacterium Acne ATCC 6919 Ekstrak Etanol Daun Si Kejut (Mimosa Pudica L)
Vulgaris acne is a chronic inflammatory condition commonly experienced by adolescents and young adults, with a prevalence reaching up to 85%. Propionibacterium acnes plays a significant role in the inflammatory process of acne, which is influenced by sebum production, hyperkeratinization, and the inflammatory immune response. Acne treatment often involves antibiotics, but resistance to antibiotics such as erythromycin and clindamycin has increased, creating serious challenges in dermatology. Therefore, the development of non-antibiotic therapies for acne is crucial. One promising alternative is the extract of Mimosa pudica L., also known as the sensitive plant, which is recognized for its antimicrobial activity. The extract of Mimosa pudica L. leaves has been shown to inhibit the growth of various pathogenic bacteria and has potential anti-inflammatory effects based on in silico studies, opening up significant opportunities for the development of plant-based treatments for acne and other inflammatory diseases. This study aims to evaluate the effectiveness of ethanol extract of Mimosa pudica L. leaves in inhibiting the growth of Propionibacterium acnes ATCC 6919. The results of the study show that the 30% ethanol extract can inhibit bacterial growth with an inhibition zone diameter of 11.537 mm, indicating the potential of this extract as a safer and more effective alternative treatment for acne.
Copyright (c) 2025 Anna Fitriawati, Annie Rahmatillah, Nurul Agustiningrum https://creativecommons.org/licenses/by/4.0
Sistem Informasi Testimoni Menggunakan Metode Fuzzy Associative Memory Berbasis WEB
In running a business, every company must provide good service to customers, because satisfactory service is very much needed to increase sales figures. However, building a sense of customer satisfaction is not that easy, it takes time to build it. Kaf Fragrance Shop, a shop engaged in the perfume sector, does not yet have a system to analyze customer testimonials effectively as a determining factor, so the store cannot identify customer needs. The purpose of creating this system, researchers want to evaluate customer satisfaction assessments by applying the FAM method or fuzzy associative memory to analyze how satisfied consumers are with the service provided by Kaf Fragrance. The FAM method was chosen because it can handle the uncertainty and ambiguity of data obtained from the questionnaire. The calculation is carried out from the questionnaire given which will later be calculated using the FAM method and the results will be classified using the defuzzification method which is carried out using the winner take all method or taking the largest value. The findings from the study are designed for assisting Kaf Fragrance elevating service quality and strengthening initiatives to improve customer satisfaction.
Copyright (c) 2025 Baqiyatur Rahma, Muhammad Fakhriza https://creativecommons.org/licenses/by/4.0
Karakteristik Sifat Fisik dan Kimia Tanah pada Lahan Perkebunan Kelapa Sawit (Elaeis guineensis Jacq.) di Desa Batu Belah, Kabupaten Kampar, Riau
Soil characteristics play a crucial role in determining soil fertility status, land capability, and sustainable land management strategies through the assessment of physical, chemical, and biological properties. Land management practices in oil palm plantations directly affect plant growth and productivity as the plantation ages. This study aims to identify and evaluate the physical and chemical properties of soils under different oil palm planting ages. The research was conducted in Batu Belah Village, Kampar Regency, Riau, using three age categories: T1 (1–5 years), T2 (5–10 years), and T3 (>15 years). A survey method and direct field observations were employed to determine soil sampling locations. The physical parameters measured included texture, bulk density (BD), particle density (PD), total pore space (TPS), fiber content, and moisture content. Chemical parameters included N, P, K, organic C, pH, Pb, and Cd. The results showed significant changes in several soil physical and chemical properties with increasing plant age. These findings indicate that the evaluation of soil characteristics can guide the development of appropriate soil management strategies to support sustainable productivity in oil palm plantations.
Copyright (c) 2025 Niken Ellani Patitis, Widya Sinta Mustika https://creativecommons.org/licenses/by/4.0
Identifikasi Senyawa Flavonoid Fraksi Etil Asetat Bunga Pacing Tawar (Costus speciosus) Metode FTIR sebagai Analgesik
Pain is a natural signal to tissue damage in the body. One of the plants that has the potential as a natural analgesic is the pacing tawar flower (Costus speciosus) which is known to contain compounds that play a role in providing analgesic effects. This research method uses a pre-post test design to see the effectiveness before and after being given a test suspension in the form of (mefenamic acid, Na CMC, and ethyl acetate fraction of pacing tawar flowers at doses of 125 mg/kgBB, 250 mg/kgBB, and 500 mg/kgBB) in mice induced by pain with the tail flick method. The results of the phytochemical screening study showed that only the ethyl acetate fraction of pacing tawar flowers (Costus speciosus) was positive for containing flavonoid compounds with the formation of a yellow color compared to the n-hexane fraction and the water fraction. Functional groups identified in flavonoid compounds are C-H, C=O, C-O groups. Ethyl acetate fraction of pacing tawar flower at doses of 250 mg/kgBB and 500 mg/kgBB can provide analgesic effects with a p value (<0.05). Based on the research that has been done, it can be concluded that the ethyl acetate fraction of pacing tawar flower contains flavonoid compounds that can inhibit pain with the most optimal and stable fraction dose at a dose fraction of 500 mg/kgBB with a p value (<0.05).
Copyright (c) 2025 Indri Maharani Syahputri, A.M.Muslihin, Ratih Arum Astuti https://creativecommons.org/licenses/by/4.0
Studi Bibliometrik: Analisis Tren dan Pemetaan Pengetahuan Mikroplastik Serta Dampak Kesehatan di ASEAN: Studi Bibliometrik Berbasis Scopus (2019-2024)
Plastic waste is a problem faced by various countries, especially ASEAN member countries. Microplastics are even more dangerous if they enter the food chain. Several studies have found microplastics in aquatic biota, which, if consumed by humans at certain levels, can harm health. In the ASEAN region, research related to microplastics is still limited despite the region having high levels of plastic pollution. This study seeks to investigate the interconnectedness of microplastic research in ASEAN through bibliometrics. Vosviewer was used for bibliometric studies to provide a comprehensive overview and identify future research directions based on past works in the Scopus database on microplastics. This study utilized 1,656 journal articles from the last five years, from 2019 to 2024, focusing on 10 ASEAN countries. The analysis results show that research is still dominated by studies of microplastic pollution and distribution in aquatic environments, with an emphasis on particle abundance. Although attention to aspects of toxicity, bioaccumulation, and human health implications is starting to increase, research integrating the physicochemical properties of microplastics with toxicological mechanisms and biological impacts is still limited. Furthermore, indicator organism-based biomonitoring approaches and comprehensive risk assessments have not been widely developed. Therefore, further research needs to focus on interdisciplinary approaches that link microplastic characteristics, adsorbed contaminants, and health impacts.
Copyright (c) 2025 Nisrinah Nisrinah, Mushliha Mushliha https://creativecommons.org/licenses/by/4.0
Penerapan Model AI Gemini pada Pengembangan Chatbot Tanya Fiqih Haji dan Umrah
This study aims to develop a hybrid mobile application prototype called “Tanya Fiqih Haji dan Umrah” as a supportive consultation medium for Islamic jurisprudence (fiqh) related to Hajj and Umrah. The application utilizes the Gemini 2.5 Flash model with a Retrieval-Augmented Generation (RAG) approach that is restricted to two official references issued by the Indonesian Ministry of Religious Affairs, namely the Hajj Manasik Infographic Book 2025 and the Hajj Supplications and Dhikr Guide 2025. The system is implemented using a modern web-to-mobile hybrid architecture based on React, TypeScript, Tailwind CSS, and Capacitor, enabling deployment as a lightweight Android application with local conversation history storage. System evaluation was conducted through expert validation on ten test questions representing the core themes of Hajj and Umrah fiqh. The results show that 70% of AI responses were categorized as fully aligned with the references, 10% as partially accurate, and 20% as not aligned. These findings indicate that the RAG mechanism helps maintain consistency between AI-generated answers and authoritative literature, potentially reducing hallucination in generative models, although expert clarification remains necessary in certain cases. This study contributes to the application of RAG-based large language models in the domain of Hajj fiqh and offers a technological support tool that may benefit pilgrims, particularly independent pilgrims.
Copyright (c) 2025 Ahmad Farisi, Chriestina Chriestina, Dafid Dafid, Adit Jansa https://creativecommons.org/licenses/by/4.0
Optimizing Coal Transfer Productivity at Taboneo: A Socio-Technical Analysis of STS Operations
This qualitative study investigates the determinants of coal loading-unloading productivity at the Ship-to-Ship (STS) Transfer Taboneo in Indonesia. Through thematic analysis of interviews, observations, and documents involving crane operators, port managers, and ship crews, the research reveals a "Resilience through Informality" model. Findings indicate that high operational effectiveness is achieved not through optimal technical systems, but through the exceptional adaptive capacity and experiential knowledge of the workforce that compensates for significant vulnerabilities in equipment logistics and formal workflow systems. While this human-centric approach currently ensures operational continuity, it presents inherent fragilities related to workforce welfare, knowledge retention, and environmental compliance. The study concludes that sustainable productivity enhancement requires a dual strategy: formalizing existing tacit knowledge through competency-based frameworks while simultaneously strengthening technical and logistical infrastructures. This research contributes to maritime studies by highlighting the critical role of human capital in port efficiency and provides practical insights for developing sustainable port management strategies in resource-constrained environments.
Copyright (c) 2025 Mohamad Nufel, Lili Purnamasita, Meilina Nurhasanah Hutagaol https://creativecommons.org/licenses/by/4.0
Evaluation of Ambient PM2.5 Levels in The Campus Area Using Information from A Low-Cost Sensor Device
This study assesses ambient PM2.5 concentrations alongside temperature and humidity at two campus sites, UPN and UGM, utilising a Low-Cost Sensor (LCS) IoT-based device. LCS-IoT provides a cost-effective and sustainable solution for air quality monitoring, addressing the shortcomings of costly traditional sensors. Data indicates considerable daily fluctuations in PM2.5 concentrations; UPN documented morning peaks surpassing 100 µg/m³ at approximately 08:00 AM, but UGM exhibited lower peaks, remaining below 45 µg/m³ during the same timeframe. This discrepancy is associated with the positioning of UGM's sensors within the campus's Green Open Space (RTH)/vegetation zone, whereas UPN is situated adjacent to a bustling roadway. This observation highlights the effectiveness of green spaces and vegetation in reducing PM2.5 pollution. The temperature trend at both analogue locations peaked at 31-33°C during the day. Relative humidity exhibits an inverse correlation with temperature, peaking at 80-90% during the early morning and declining to a low of 59-70% during the day. The research findings underscore the significance of air quality monitoring within the campus environment and the necessity for specific mitigation strategies to safeguard the health of the academic community. Extended research with prolonged measuring periods is recommended for a more thorough comprehension.
Copyright (c) 2025 Dian Hudawan Santoso, Ahmad Yuda Hermawan, Bryan Tegar Mahardika, Ichlasul Kevin Hilmi, Mufid Rona Nuansa https://creativecommons.org/licenses/by/4.0
Keberlanjutan dari Hutan: Bagaimana Pasang Ri Kajang Mempengaruhi Regulasi Lingkungan Modern
This study examines the integration of Pasang Ri Kajang into Regional Regulation (Perda) No. 9 of 2015 of Bulukumba Regency and its relevance to sustainable development within the Ammatoa Kajang Indigenous Community. Pasang Ri Kajang, as the philosophical foundation of the community, embodies ecological ethics, social norms, and moral values that regulate human interaction with nature. Using a qualitative case study approach, data were collected through in-depth interviews, observation, and documentation involving customary leaders, community members, and local government officials. The findings indicate that Perda No. 9/2015 functions as a formal instrument that institutionalizes the values of Pasang, particularly in protecting customary land rights, preserving cultural traditions, and managing customary forests through conservation principles. This integration produces a hybrid governance model that combines the moral legitimacy of customary norms with the legal certainty of state regulation. The implementation of the regulation contributes positively to ecological, social, and economic sustainability, although it still faces challenges such as modernization pressures, land-use conversion, and weak policy enforcement. Overall, the study highlights the crucial role of Pasang Ri Kajang in strengthening sustainable environmental governance at the local level.
Copyright (c) 2025 Nurfatimah, N, Risma Handayani, Nursyamsi Faradillah https://creativecommons.org/licenses/by/4.0
Perancangan Sistem Informasi Persediaan, Penjualan & Pembelian Barang pada PT.XYZ Berbasis Web
In today's digital era, internet technology plays a vital role in the business sector, enabling companies to grow more rapidly and adapt to market demands. The integration of information technology has transformed business operations, as evidenced by the increasing number of large enterprises adopting such technologies. One of the main advantages is the ability to conduct online transactions, allowing customer to make purchases without queuing and enabling employees to work more efficiently. Consequently, transaction processes become faster and more convenient, while also expanding the company’s customer base and increasing profitability. This study presents the development of an information system using the prototyping methodology. The proposed system is built using PHP programming language and the CodeIgniter framework. The system design includes use case diagrams, activity diagrams, class diagrams, and entity relationship diagrams. The implemented information system aims to optimize the purchasing and sales processes at PT. XYZ, enhancing overall business efficiency and supporting strategic decision-making. The final outcome of this research is a web-based application that facilitates and streamlines product sales and purchases within the company.
Copyright (c) 2025 Ellyse Obe Johanis, Hery Hery, Eric Jobiliong, Calandra A. Haryani, Andree E. Widjaja https://creativecommons.org/licenses/by/4.0
Evaluasi Robustness dan Deployment Readiness Model XGBoost untuk Prediksi Risiko Gagal Jantung di Indonesia
Cardiovascular diseases, particularly heart failure, remain a leading cause of mortality in Indonesia, affecting an estimated 2.78 million individuals. This study aims to develop a heart failure risk prediction model using the XGBoost algorithm and to evaluate its performance through a comparative validation approach across two datasets with distinct characteristics. The primary model was trained on a large-scale Indonesian population dataset (N = 158,355; 28 features) representing the complexity of real-world clinical data, while the UCI Heart Disease dataset (N = 918; 12 features) was used as a benchmark under more controlled conditions. Experimental results show that the Indonesian model achieved a testing accuracy of 73.50% with a very small training–testing performance gap of 0.53% and an AUC-ROC value of 0.814, indicating strong stability and generalization capability. In contrast, the model trained on the UCI dataset obtained a higher accuracy of 88.59% but exhibited moderate overfitting, reflected by a larger performance gap of 4.60%. Feature importance analysis consistently identified a history of heart disease, hypertension, and smoking behavior as the most influential predictors across both datasets. These findings highlight that model stability and generalization on real-world data are more critical than raw accuracy derived from small, idealized datasets when assessing the clinical deployment readiness of medical artificial intelligence systems in Indonesia.
Copyright (c) 2025 Triandes Sinaga, Ayumi Ayumi, Jefri Junifer Pangaribuan https://creativecommons.org/licenses/by/4.0
Analisis Desain Faktorial Pengaruh Variabel Proses terhadap Kualitas Permukaan Potong pada Proes Laser Cutting
Laser cutting is a precise and efficient manufacturing technology, but process parameters significantly influence the quality of the cut surface. A smooth cut surface is one of the essential criteria in laser metal cutting, especially in the manufacturing industry. The roughness of the cut surface is influenced by several key parameters, including the laser beam focal point, and optimal cutting gas pressure can help clean the surface. This study aims to analyze the effects of process variables on the roughness of the cut surface in laser cutting. Experiments were conducted with a combination of three variables, namely cutting speed, gas pressure, and focal point, on 3 mm mild steel material using the factorial design method. The results showed that the optimal parameter combination for the lowest surface roughness was a cutting speed of 2.3 m/min, a gas pressure of 1.8 bar, and a focal point of 4.3 mm. The cutting speed and gas pressure variables have a significant effect on surface quality, and the interaction between cutting speed and focal point also significantly affects surface roughness.
Copyright (c) 2025 Totok Suwanda, Dinda Aliunnisa https://creativecommons.org/licenses/by/4.0