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Penggunaan fly ash sebagai bahan tambahan untuk menggantikan sebagian semen merupakan salah satu hal untuk mendorong penggunaan material alternatif. Penelitian ini mengkaji pengaruh persentase substitusi fly ash sebesar 10%, 30%, dan 50% dengan penambahan zat aditif superplasticizer sikament-NN (Tipe F) dengan dosis 1,2% terhadap kemudahan pengerjaan (workability) dan kekuatan tekan beton. Kinerja beton dianalisis berdasarkan kekuatan tekannya pada hari ke-28 dab kelancaran kerjanya berdasarkan slump. Hasil penelitian ini menunjukan bahwa kombinasi penggunaan fly ash dan superplasticizer sikament-NN (Tipe F) dapat meningkatkan kemudahan adukan, dengan nilai slump maksimum mencapai 14,3 cm pada presentase fly ash 50%. Namun, peningkatan kelacakan ini berbanding terbalik dengan kekuatan tekan yang konsisten menurun seiring dengan peningkatan penambahan fly ash. Nilai kuat tekan maksimum dicapai oleh campuran beton yang hanya menggunakan superplasticizer tanpa fly ash sebesar 320,50 kg/cm2, sementara nilai yang optimal ditemukan pada variasi persentase 10% dengan penambahan superplasticizer 1,2% menghasilkan kuat tekan sebesar 307,65 kg/cm2, sehingga penggunaan kombinasi ini diharapkan dapat memberikan kontribusi efisiensi bagi rekayasa sipil.

Pierhead casting is a critical activity in toll road infrastructure projects that requires continuous concrete supply to maintain quality and execution time. Factors influencing the smooth casting process include the regularity of truck mixer arrival intervals and the work cycle of the truck concrete pump. This study aims to analyze the effect of truck mixer intervals and truck concrete pump performance on the productivity of pierhead casting at Pierhead P37S on the Solo–Yogyakarta–NYIA Toll Road Project, Section 2 Package 2.1A. The analysis method used field observation through time study techniques to measure the cycle duration of truck mixers and the operating time of the truck concrete pump. The analysis stages included calculating cycle time, productivity, production capacity, and working duration of each equipment. The results show that the truck concrete pump achieved a productivity of 0.425 m³/minute, while the truck mixer reached 0.989 m³/minute. These values were influenced by cycle time, equipment condition, work area condition, execution method, and work volume. Based on duration analysis, the truck concrete pump required about 4.7 hours to complete the casting of 120 m³ of ready-mix concrete, while the truck mixer required 2.022 hours to support the concrete supply process.

Simpang empat tak bersinyal memiliki peran penting dalam mengatur pergerakan lalu lintas, namun sering menimbulkan permasalahan ketika volume kendaraan tinggi. Penelitian ini bertujuan untuk menganalisis kinerja simpang empat tak bersinyal di Simpang Jalan DR. Sutomo, Jalan Lintas Utama Sumatera, dan Jalan Letkol Rusman Effendy Bustan, Kota Baturaja, dengan menggunakan metode Pedoman Kapasitas Jalan Indonesia (PKJI) 2023. Pengumpulan data dilakukan melalui survei selama tiga hari dengan pengamatan pada jam puncak pagi pukul 07.00-09.00 Wib, siang pukul 12.00-14.00 Wib, dan sore pukul 16.00-18.00 Wib. Hasil penelitian menunjukkan bahwa volume lalu lintas tertinggi terjadi pada hari Senin pukul 08.30–08.45 WIB dengan Qtot = 2.932 SMP/jam dan kapasitas simpang C = 3.446 SMP/jam. Perhitungan kinerja simpang menghasilkan derajat kejenuhan (DJ) = 0,85, tundaan rata-rata = 14,57 detik/SMP, dan peluang antrean berkisar 29%–57%. Berdasarkan kriteria PKJI 2023, simpang ini termasuk dalam Tingkat Pelayanan E Situasi ini menunjukkan bahwa kinerja simpang berada pada kondisi kritis dan tidak stabil.  

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

Nugget is a high protein frozen food. Catfish is one of the raw materials that can be used to make nugget Catfish contains high protein, tastes good, has a soft texture and is relatively cheap. To increase the nutritional content, vegetables are added in the processing. Broccoli is one of the vegetables that can be added in making nuggets because contains high fiber and potassium. The purpose of this study was to determine the effect of adding broccoli with different concentrations on the crude fiber, potassium and organoleptic values of catfish nuggets. The research design used was a completely randomized design with 4 treatments, each with 3 replications. The treatment in this study was based on the concentration of broccoli added, namely B0 (0%), B1 (25%), B2 (50%) and B3 (75%). Parameters observed were crude fiber, potassium, and organoleptic value of catfish nuggets. The results showed that the addition of broccoli at various concentrations had a significant effect (P<0.05) on crude fiber, and potassium value but had no significant effect on organoleptic values. The most preferred nuggets with the addition of broccoli was treatment B1 (25%). The addition of broccoli in the processing of catfish nuggets can increase crude fiber and potassium.

Mie basah bebas gluten umumnya memiliki kandungan protein yang relatif rendah karena didominasi oleh bahan berpati, sehingga diperlukan upaya peningkatan nilai gizi tanpa menurunkan tingkat penerimaan konsumen. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan tepung ikan teri medan (Stolephorus sp.) terhadap tingkat kesukaan mie basah bebas gluten serta mengetahui karakteristik kimia pada perlakuan terbaik. Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan empat taraf penambahan tepung ikan teri medan, yaitu P0 (0 g), P1 (5 g), P2 (10 g), dan P3 (15 g). Tingkat kesukaan dinilai oleh 40 panelis pada parameter warna, aroma, rasa, dan tekstur menggunakan uji hedonik. Data dianalisis menggunakan Analysis of Variance (ANOVA) dan dilanjutkan dengan uji Duncan. Perlakuan terbaik ditentukan menggunakan metode indeks efektivitas dan selanjutnya dianalisis secara proksimat. Hasil penelitian menunjukkan bahwa penambahan tepung ikan teri medan berpengaruh terhadap tingkat kesukaan mie basah bebas gluten. Perlakuan terbaik diperoleh pada P1 (5 g) berdasarkan nilai indeks efektivitas tertinggi. Hasil analisis kimia pada P1 menunjukkan kadar air 37,33%, kadar abu 1,71%, kadar lemak 3,34%, kadar protein 9,76%, dan kadar karbohidrat 47,86%. Kadar protein telah memenuhi persyaratan mutu mie basah berdasarkan SNI 2987:2015, meskipun kadar air masih melebihi standar. Penambahan tepung ikan teri medan berpotensi meningkatkan nilai gizi mie basah bebas gluten dengan tetap mempertahankan tingkat penerimaan konsumen.

Karbohidrat dan protein merupakan nutrisi penting yang dibutuhkan oleh tubuh. Penelitian ini diarahkan untuk melakukan identifikasi kualitatif karbohidrat (gula pereduksi) dengan uji benedict dan uji fehling, serta melakukan identifikasi/konfirmasi protein dengan uji biuret pada berbagai sampel pangan, serta mendiskusikan interpretasi hasil uji. Pada uji biuret, perubahan warna menjadi ungu / violet menandakan adanya protein (ikatan peptida). Pada uji benedict, perubahan warna menjadi hijau berarti terdapat sedikit gula reduksi, kuning berarti sedang, oren berarti signifikan, dan terberntuk endapan merah bata berarti banyak terdapat gula reduksi. Pada uji fehing, hasil positif ditandai dengan berubahnya warna larutan biru menjadi hijau dan terdapat endapan merah bata. Pangan yang signifikan mengandung protein adalah tempe, ayam, nugget, sosis, dan telur mentah. Pangan yang mengandung protein tetapi tidak begitu siginifikan adalah roti tawar dan croissant. Bahan pangan yang tidak terdeteksi adanya kandungan protein pada uji biuret adalah mie dan jeruk nipis. Bahan pangan yang signifikan mengandung gula pereduksi adalah nasi, mie, croissant, dan roti tawar. Bahan pangan yang tidak begitu signifikan mengandung gula pereduksi adalah jeruk nipis, tempe, nugget, dan telur mentah. Bahan pangan yang tidak mengandung gula pereduksi pada penelitian ini adalah ayam dan sosis.

Abstract:

This study aims to analyze the relationship between epistemology and scientific logic in the development of scientific knowledge using a library research approach by reviewing relevant literature in the fields of philosophy of science, theory of knowledge, and principles of scientific logic. The findings indicate that epistemology serves as a philosophical foundation for understanding the origin, structure, and validity of knowledge, while scientific logic functions as a systematic tool that guides reasoning in constructing rational and consistent scientific truth. Both have a complementary relationship, where epistemology provides a normative framework for determining the criteria of knowledge validity, and scientific logic ensures that the reasoning process is structured, coherent, and free from fallacies. Therefore, the integration of epistemology and scientific logic plays a crucial role in producing scientific knowledge that is objective, measurable, and academically accountable, while also enhancing the overall quality and credibility of the scientific process.

This study aims to determine and analyze the impact of the work environment on employee job satisfaction at the Human Resources Development Agency (BPSDM) of Jambi Province. The research is motivated by the importance of a supportive work environment in creating comfort, increasing motivation, and improving employee job satisfaction, since preliminary observations found several work-environment problems such as inadequate room cooling, disrupted toilet water supply, and unstable Wi-Fi network. This study used a quantitative approach with an associative research design. The population consisted of 75 employees, all of whom were used as the sample through a saturated sampling technique. Data were collected using a four-point Likert-scale questionnaire and analyzed with validity tests, reliability tests, classical assumption tests, and simple linear regression using SPSS. The results show that the work environment has a significant impact on employee job satisfaction, evidenced by a significance value smaller than 0.05, with a coefficient of determination of 61.8 percent. This indicates that the better the work environment, both physical and non-physical, the higher the employee job satisfaction. This research is expected to serve as a consideration for the agency in improving the quality of the work environment to support employee job satisfaction and performance.

This study aimed to determine the effect of different levels of beef liver addition on the nutritional, physicochemical, and color characteristics of chicken patties. Beef liver, an underutilized animal by-product with high nutritional value, was incorporated at different levels (0%, 20%, 40%, and 60%) into chicken patty formulations. The experiment was conducted using a Completely Randomized Design with four treatments and five replications. The collected data were analyzed using analysis of variance (ANOVA) and followed by Duncan’s Multiple Range Test (DMRT). The results showed that the addition of beef liver had no significant effect (P>0.05) on protein content, water activity (aw), and b* values, but had a highly significant effect (P<0.01) on moisture content, fat content, cooking loss, texture, and color characteristics (L* and a*). Increasing beef liver levels improved the nutritional profile and modified the physical and visual characteristics of the patties. These findings demonstrate the potential of beef liver as a value-added functional ingredient for developing nutritious chicken patties while promoting the sustainable utilization of underutilized livestock by-products.

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

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

Cattle farming plays a strategic role in rural economic development by generating employment, supplementary household income, and contributing to food and nutritional security. However, in Indonesia, most smallholder cattle enterprises remain traditional and small-scale, leading farmers to treat livestock farming primarily as a secondary livelihood. While previous studies have largely focused on technical adoption and production performance, limited attention has been given to farmers’ psychological interest as a foundation for sustaining livestock enterprises. Therefore, this study aims to analyze the level of community interest in cattle farming and examine the influence of farmers’ characteristics (age, education level, herd size, number of family dependents, farming experience, and primary income) on such interest. A quantitative survey was conducted involving 34 cattle farmers in Taji Village, Jabung District, Malang Regency, selected using total sampling. Data were collected through structured questionnaires and analyzed using multiple linear regression. The findings reveal that community interest in cattle farming is generally high, as reflected in emotional (3.93), cognitive (3.81), and conative (3.74) dimensions measured on a four-point Likert scale. Regression results indicate that age has a significant positive effect (p = 0.022), whereas farming experience has a significant negative effect (p = 0.025) on interest levels. Other variables show no statistically significant influence. These findings highlight that psychological engagement in cattle farming is shaped more by demographic and experiential factors than by formal education or income level. The study contributes to the literature by positioning interest as a psychological determinant of livestock sustainability. Policy implications emphasize the urgency of risk-mitigation extension programs to address farmer burnout, incentivized intergenerational knowledge transfer, and cooperative-based institutional support to ensure smallholder livestock sustainability.

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

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

Open burning of household waste remains the dominant waste disposal practice in rural areas of Indonesia, posing significant risks to public health and environmental quality. This community service activity aimed to provide an innovative, low-smoke waste combustion solution — the rocket stove incinerator — to the residents of Dusun Allukeke, Desa Belapunranga, Kecamatan Parangloe, Kabupaten Gowa. A baseline survey conducted during PBL 1 revealed that 87.6% of households disposed of waste through open burning. An asset-based community development (ABCD) approach was adopted, engaging community members at every stage from planning, construction, to utilisation. The rocket stove was constructed over three days using locally available materials and was demonstrated to significantly reduce visible smoke emissions compared to conventional open burning. The technology works through a vertically insulated combustion chamber that promotes near-complete combustion, reducing waste volume by 50–90% while suppressing particulate matter and hydrocarbon emissions. Community participation strengthened local ownership of the solution. This activity demonstrates that appropriate technology co-constructed with communities can serve as a practical, sustainable, and replicable model for rural waste management.

Breastfeeding should ideally begin immediately after birth and be provided exclusively for the first six months of life. However, in 2022, the coverage of exclusive breastfeeding among infants aged 0–6 months in Jayapura was only 21%, which remains far below the national target of 45%. Various factors contribute to this low coverage, including limited knowledge, lack of experience, insufficient support systems, and concerns among adolescent mothers that breastfeeding may interfere with their education or employment. This study aimed to explore the breastfeeding experiences of adolescent mothers in Wahno Village, Abepura Subdistrict. A qualitative research design was used, with structured interviews conducted using a questionnaire. The results indicated that the initiation of exclusive breastfeeding among adolescent mothers was generally positive. Participants reported mixed emotional experiences, including feelings of happiness, pride, stress, and discomfort. Family support, particularly from husbands, played an important role in sustaining breastfeeding practices. Most respondents also demonstrated adequate knowledge regarding how to manage breastfeeding-related challenges. Overall, adolescent mothers in Wahno Village showed a reasonable level of understanding and commitment toward exclusive breastfeeding. Continued education and support are recommended to further strengthen breastfeeding practices among adolescent mothers and their families.

Stunting is a chronic nutritional problem that remains a major public health challenge in Indonesia, including in Ngombakan Village, Polokarto District, Sukoharjo Regency. Moringa leaves (Moringa oleifera Lam.) are known as a superfood plant with nutritional content far exceeding conventional food ingredients, including protein, vitamin A, calcium, potassium, iron, and vitamin C, making them highly potential as a functional food for stunting prevention. This community service activity aims to improve the knowledge of mothers at the Posyandu of Ngombakan Village about stunting and the benefits of moringa leaves, while also introducing the innovation of moringa leaf pudding as a nutritious supplementary food for toddlers. The activity was carried out from August 13 to September 6, 2024 through 6 meetings at the posyandu using lecture methods, leaflet distribution, and pudding-making demonstrations. The results showed a significant increase in mothers' knowledge about stunting and the nutritional content of moringa leaves, as well as positive enthusiasm from participants in accepting moringa leaf pudding as an affordable and nutritious supplementary food alternative for toddlers.

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