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Disposal area is an area at an open pit mine that is used as a place to store or dispose of worthless materials. Disposal must also follow the specified safety factor standards, if the disposal design is not safe after being analyzed by a geotechnical engineer, the design must be redesigned to achieve the desired safety factor value. One way to increase the fk value is to make a Counterweight plan in making disposal. Where Counterweight is a fill material that is made with special treatment so that the soil bearing capacity increases which functions to withstand the load on it. Landslides on disposal slopes are one of the serious problems faced in mining activities, especially in areas with vulnerable geological and topographic conditions. PT Jembayan Muarabara, which operates in Marangkayu District, Kutai Kartanegara Regency, East Kalimantan Province, is no exception to this challenge. The A–A’ cross section shows a safety factor value of 1.118 in saturated conditions, which indicates that the slope is at a stable limit and needs to be improved through engineering such as adding counterweights. The B–B’ cross-section has a safety factor value of 2.332, which is included in the safe category and has met the provisions of the ESDM Ministerial Decree No. 1827 K/30/MEM/2018. The C-C’ cross-section has a safety factor value of 1.511, which is included in the safe category and has met the provisions of the ESDM Ministerial Decree No. 1827 K/30/MEM/2018.

This study aims to evaluate the performance of the loading and unloading equipment in coal mining activities at the Mahakam Pit, PT Insani Bara Perkasa Site Km 11, East Kalimantan. The research was motivated by the importance of achieving mechanical equipment performance standards according to the Decree of the Minister of Energy and Mineral Resources No. 1827 of 2018. Data were obtained through direct observation and analysis of actual working time and evaluation of operational constraint factors. The results of the analysis showed that before the evaluation, the mechanical availability (MA) value was 87.24%, physical availability (PA) 88.51%, availability utilization (UA) 88.73%, and effective utilization (EU) 78.54%. After evaluating the constraint time, there was an increase in all parameters: MA to 88.71%, PA to 89%, UA increased to 90%, and EU reached 80%. This evaluation also had an impact on increasing the productivity of the loading and unloading equipment from 268.41 bcm/hour to 284.43 bcm/hour. Thus, the evaluation of work obstacles is proven to be effective in increasing the efficiency and productivity of the digging-loading equipment at the research location.

The mining system applied by PT Bukit Baiduri Energi is an open pit mining system utilizing the open-pit method. The application of the open-pit method creates a depression that has a high potential to become a catchment area for both surface runoff and groundwater. In the mining pit of PT Bukit Baiduri Energi, there is a sump located at an elevation of -86 meters above sea level (mdpl). The planned mining boundary is at an elevation of -110 mdpl. Therefore, this research aims to determine the area of the catchment, runoff discharge values, sump capacity, and pump capacity, so that the volume of incoming water can be known, allowing for the control of the sump to prevent overflow that could disrupt mining activities.. Based on the data obtained and the calculations performed, the catchment area was found to be 103.42 ha. In the calculation of runoff discharge using the rational method, the total runoff discharge entering sump A9 was found to be 4,211.66 m3/day. The capacity of the sump was measured at 125,187.62 m3. In the pump capacity calculation, the pump capacity based on the pumping discharge was found to be 2,926.80 m3/day.

This study aims to evaluate and optimize the effects of vacuum pressure and drying time on moisture content in the freeze drying process. Freeze drying was selected due to its ability to preserve the quality of food products by removing moisture through sublimation under low vacuum conditions. The vacuum pressure variables applied in this study were -62.8 cmHg, -64 cmHg, -67 cmHg, -70 cmHg, and -71.2 cmHg, while the drying times were varied at 8.2 hours, 9 hours, 11 hours, 13 hours, and 13.8 hours. Response Surface Methodology (RSM) with a Central Composite Design (CCD) was employed to analyze the individual effects and interactions of the two factors on final product moisture content. The results showed that both vacuum pressure and drying time significantly influenced moisture reduction, while their interaction effect was statistically insignificant. The optimum conditions were achieved at a vacuum pressure of -70.5 cmHg and a drying time of 12.6 hours, meeting the moisture content requirements based on SNI 8273:2023 standards. These findings are expected to serve as a practical reference for determining optimal operating parameters in freeze drying processes to improve efficiency and product quality.

Corruption in the education sector is a serious problem that harms the state and has a direct impact on the quality of education and the future of the younger generation. This article discusses various forms of corruption in education, ranging from misuse of procurement project budgets to misappropriation of education grants. The impact of this corruption is seen in poor education facilities, inequitable access, and declining quality of teaching and curriculum. Overcoming these problems requires transparency, strict supervision, character education, and active community involvement in monitoring. Only with collective efforts and shared commitment can corruption in education be eradicated, so that the hope of creating a smart and competitive generation is maintained.

Most people are exposed to sudden death as a result of viral hepatitis infection, especially at an advanced age, so we need to know the continuation of the disease until death in a sample of hospitals to know the differences in the services provided by those hospitals. The research aims to estimate a function for the Rayleigh distribution (RD) using several methods (maximum likelihood function, White, s, weighted least square) and choose the best method for estimation using the mean square error (MSE) and compare the survival rates of patients admitted to (Al-Kadhimiya, Al-Karkh, and Yarmouk) hospitals, The results of the research showed in the experimental aspect that the maximum likelihood method for all sample sizes is the best, followed by the weighted least squares method and finally the White method. In the applied aspect, on a sample consisting of (63) patients (liver cirrhosis + liver cancer) for the first quarter of 2025, it was found that their survival rate until death is (33%) for a time average of (2) months and (15) days.

Coastal environmental pollution, especially due to plastic waste, has become a serious threat to marine ecosystems and public health. Nambo Beach in Kendari City, Southeast Sulawesi, is one of the areas affected by the lack of waste management and low public awareness. This community service activity aims to increase community awareness and participation in maintaining beach cleanliness through clean-up actions and environmental education. The methods used include collecting rubbish by students and providing education to visitors through poster media. The results of the activity show that there is community enthusiasm for this activity as well as increased understanding of the importance of protecting the environment. Visual education has proven effective in conveying environmental messages, while beach clean-up actions encourage direct behavior change. This activity proves that collaboration between academics and the community can create a positive impact and needs to be implemented sustainably as part of a participatory-based waste management strategy in coastal areas.

Socio-economic action activities aim to increase participants' awareness of the importance of social and environmental roles through educational and participatory approaches. This study aims to describe the implementation of the activity of feeding maggot to chickens as a form of organic waste utilization and the activity of decorating bokor as a preservation of local culture. The method used was participatory observation, where participants were directly involved in both activities. The results showed that participants understood the benefits of maggot as a waste management solution and alternative feed, and showed high enthusiasm in decorating bokor as a form of preserving cultural values. This activity was able to increase social, environmental, and cultural awareness in participants in an integrated manner in one series of activities.

This student service activity aims to increase awareness of the young people of the HKI Aek Raso Church regarding the cleanliness and health of the church environment through a participatory approach. The main problem raised was the young generation's low awareness of the importance of keeping places of worship clean. Students from the Christian Education Management and Christian Religious Education Study Program at IAKN Tarutung actively involve youth in mutual cooperation activities, reflective discussions, and the preparation of routine cleaning schedules. This approach does not only focus on physical actions, but also character and theological education which emphasizes that cleanliness is part of the testimony of faith. The results of the service show an increase in youth initiative and responsibility in protecting the church environment. Apart from creating positive behavioral changes, this activity also strengthens social relations between congregations. It can be concluded that participatory based service is effective in forming a culture of sustainable hygiene care and strengthening the spirituality of the church community

This research is motivated by the low attendance and involvement of church youth in spiritual activities, as well as the weak Christian character that should be the basis of their lives. The purpose of this study is to analyze the impact of the service learning approach by IAKN Tarutung students on character development and increasing participation of Naposo Bulung youth at HKBP Maranatha Ressort Cinta Damai. This research is based on the theory of service learning (Eyler & Giles, 1999), experiential learning (Kolb, 1984), and the concept of sense of belonging (Etzioni, 1991) which emphasizes the importance of emotional involvement and critical reflection in the learning and service process. The method used is a descriptive qualitative approach with data collection techniques through observation, in-depth interviews, and documentation, which were conducted for three months. The results of the study showed that the service learning program had a significant influence in increasing the attendance of youth from an average of 14 to 25 people per week, as well as fostering positive characters such as responsibility, discipline, and social concern. Students not only act as implementers of activities, but also as spiritual mentors and spiritual friends, who form authentic and contextual relationships with teenagers. The implications of this study confirm that service learning is an effective approach in the formation of church teenagers because it combines aspects of direct service with spiritual and academic reflection. Therefore, it is recommended that this approach be integrated more systematically into the curriculum of higher theological education and used as a model of sustainable service in the church community.

Shrimp shell waste is a potential marine biomass resource rich in bioactive compounds such as astaxanthin and chitin, yet remains underutilized in the livestock sector. This study aimed to evaluate the effect of incorporating shrimp shell meal into duck (Anas sp.) feed rations on the yolk color intensity of duck eggs. The experimental design applied a completely randomized design (CRD) with a single factor and four treatments: D0 (100% rice bran, control), A1 (rice bran + 2% shrimp shell meal), A2 (rice bran + 6%), and A3 (rice bran + 10%), with a 21-day observation period. The primary parameter measured was yolk color intensity, assessed visually using a standardized color scale. The results indicated that the addition of shrimp shell meal significantly enhanced yolk color intensity, with the highest pigmentation observed in the A3 treatment. Astaxanthin, functioning as a natural carotenoid pigment, was biologically absorbed and distributed into the yolk via lipophilic pathways, while chitin supported gut health and nutrient absorption efficiency. This study aligns with the principles of the circular economy by valorizing marine processing waste as a functional feed ingredient. A 10% inclusion rate was found to be visually optimal; however, further studies are required to assess its physiological impacts and economic feasibility in broader production contexts.

Akurasi estimasi biaya diperlukan dengan perencanaan seoptimal mungkin seperti dengan melakukan perbandingan estimasi biaya konstruksi menggunakan metode AHSP dengan perhitungan dari kontraktor. Perbandingan dapat menjadi referensi untuk mengukur akurasi dan efisiensi penerapan metode dengan objek proyek gudang baja. Penelitian menggunakan metode analisis kuantitatif untuk memperkirakan rencana anggaran biaya dengan mengacu pada AHSP SE Direktur Jenderal Bina Konstruksi No. 68/SE/Dk/2024 yang selanjutnya dibandingkan dengan hasil perhitungan dari kontraktor. Hasil penelitian diperoleh bahwa estimasi biaya konstruksi dari pihak kontraktor lebih ekonomis dibandingkan dengan hasil AHSP 2024. Hasil perhitungan menunjukkan bahwa total biaya dari perhitungan AHSP 11,02% lebih tinggi dari estimasi kontraktor. Hal ini disebabkan karena upah tenaga kerja, bahan dan peralatan yang lebih tinggi pada AHSP dibandingkan dengan estimasi dari kontraktor. Saran penelitian selanjutnya untuk melakukan perhitungan pada pekerjaan lainnya, untuk menunjukkan keseluruhan biaya konstruksi.

Unsignalized intersections are a major point of concern due to the increasing number of vehicles. Bima City is a city located on the eastern part of Sumbawa Island, West Nusa Tenggara Province. As a developing city, congestion and busy traffic often occur on roads or intersections of Mongosidi and Anggrek roads. Therefore, this study was conducted to determine the performance and level of service of unsignalized intersections at Mongosidi Street and Anggrek Street. The method used refers to the Indonesian Road Capacity Manual (MKJI) 1997. This study aims to determine the indicators of traffic behavior at unsignalized intersections. The results of the calculation obtained a total flow of 3147 smp / hour, a capacity value (C) of 4234 smp / hour and a degree of saturation (DS) of 0.74, Traffic Delay (DT) of 8.07 sec / smp, intersection delay (D) of 11.73 sec / smp and upper and lower limit queuing opportunities of 44.46% and 17.74% respectively. This condition occurs on Monday, March 17, 2025 at the peak hour of 06.45-07.45 WITA. For the level of service of the intersection pattern, the conditions on Monday, March 17, 2025 at the peak hour of 06.45-07.45 WITA are also categorized as type C, namely stable flow, but the speed and movement of vehicles are controlled.Drivers are limited in choosing speed, with saturation density (Ds) around 0.45 - 0.74.

Eye fatigue is a common condition often experienced by workers in the textile industry when their eyes feel very tired due to prolonged and continuous use in low light conditions. Among textile workers in Dalangan Village, Tawangsari, Sukoharjo, 100% of the 10 respondents experienced eye fatigue due to insufficient lighting intensity that did not meet the standard (300 Lux). This study aims to investigate the relationship between lighting intensity and eye fatigue among textile workers in the central textile industry in Dalangan Village, Tawangsari, Sukoharjo. This is a quantitative study using observational analysis with a cross-sectional approach. Lighting intensity was measured using a lighting measurement observation sheet with a Lux Meter, while eye fatigue was measured using a questionnaire. The study population consisted of 35 workers, and the sample was selected using total sampling. Based on the results of the chi-square test analysis, a significant relationship was found between lighting and eye fatigue among textile workers, with a p-value of <0.05 and a p-value of 0.039. The analysis yielded a PR value of 0.727, meaning that respondents with inadequate lighting have a 0.727 times higher risk of experiencing eye fatigue compared to respondents with adequate lighting. We recommend that weaving workers pay more attention to eye health and ensure that the lighting levels used comply with standards.

Indonesian National Arts are different from other countries. One of them is textile craft art, which includes batik craft art, which was recognized by UNESCO as an original Indonesian cultural heritage on October 2, 2009. Batik is the art of drawing on clot . Hand-drawn batik is batik that is produced using a canting tulis which is used as a tool in placing wax liquid on the cloth. To create this work, the author uses the creation method from Sp. Gustami which consists of 3 stages, namely: Exploration, Design, and Realization. The results of the creation of this hand-drawn batik work produced 12 batik works in the form of two-dimensional works of various sizes. The types produced from this work are: Hijab, Long Cloth and Wall Decorations. Batik works have aesthetic value (beauty) namely the combination of Torch Ginger Plants. Torch Ginger Plants are used as the main motif in this batik work and other motifs are isen-isen. The process of creating written batik works that begins with the initial steps of making motifs on paper, transferring patterns from paper to cloth, the canting process, coloring batik, locking colors, and ngelorod batik. The process of creating written batik works that begins with the initial steps of making motifs on paper, transferring patterns from paper to cloth, the canting process, coloring batik, locking colors, and ngelorod batik.

The learning method is a systematic and orderly process carried out by teachers or educators in delivering material to their students. Through the learning method, it is expected that the teaching and learning process can run well. Thus, it is very important for an educator to know the methods in learning so that students feel more enthusiastic when participating in learning in the classroom. In addition, choosing the right method makes students not quickly feel bored or tired when participating in teaching and learning activities in the classroom. The purpose of writing this article is to find out how a teacher chooses a learning method. The method in this study is qualitative narrative, with data collected from the results of semi-structured interviews with a teacher. The results of this study indicate that there are 2 factors that a teacher can consider in choosing a learning method, namely internal and external factors. Internal factors include student characteristics, facilities and infrastructure, teacher experience and skills, and learning objectives. Then external factors include the curriculum and learning environment.

Traditional arts are an important part of cultural heritage that must be preserved. One of the unique and distinctive art forms from Batu Bajanjang, Lembang Jaya District, in Solok Regency, West Sumatra, is the Plate Dance in Ateh Talua. This dance has deep philosophical values and requires extraordinary skills from the dancers. However, modernization and the decreasing interest of the younger generation are major challenges in preserving this dance. This article discusses the History of Plate Dance Art, Plate Dance Art in Diateh Talua, and efforts that can be made to Preserve Plate Dance in Ateh Talua so that it remains part of the cultural identity of the Batu Bajanjang community. Through education, cultural festivals, and government and community support, this art can continue to develop and be passed on to future generations.

Indonesia faces significant challenges in maintaining environmental ethics amid rapid economic growth and urbanization. Environmental degradation, such as deforestation, water pollution, and poor waste management, reflects a widespread lack of ecological awareness. However, local wisdom offers an alternative approach to environmental sustainability. This study aims to describe the forms of environmental ethics embedded in the local wisdom of the Betawi community in the Betawi Cultural Village of Setu Babakan, South Jakarta. Using a descriptive qualitative method, the research explores cultural practices that support environmental preservation, including the use of home gardens, reverence for nature, and community-based waste management. The findings show that the Setu Babakan community applies ecological principles through traditions, customs, and active participation in environmental care. Moreover, synergy between the government, local communities, and the tourism sector contributes to developing an area that not only preserves Betawi culture but also maintains ecological balance. These findings highlight the importance of integrating local cultural values into environmental policy as a pathway toward sustainable development.

This study is a literature review that aims to identify and analyze the application of GeoGebra applications in learning geometric transformations at the high school level. Geometric transformation is a material that requires high spatial visualization skills, so learning media are needed that are able to present concepts in a concrete and interactive way. GeoGebra, as a dynamic mathematics application, is considered capable of facilitating student understanding through direct visualization of transformation processes such as translation, reflection, rotation, and dilation. The study was conducted by reviewing 11 relevant scientific articles, published in the last five to ten years, and meeting certain inclusion criteria. The results of the analysis show that the application of GeoGebra in learning has a positive impact, both cognitively, affectively, and technically. GeoGebra is able to improve students' understanding of concepts, learning motivation, and learning outcomes. The implementation strategy includes the development of e-modules, digital teaching materials, problem-based learning, and application usage training. Overall, GeoGebra has proven to be valid, practical, and effective in supporting more interesting and meaningful learning of geometric transformations.

Dating relationships as a form of intimate personal relationships do not always go as expected. In fact, many cases show that these relationships can lead to discomfort and forms of violence, such as physical, psychological, sexual and financial abuse. This phenomenon has become one of the most discussed social issues, especially on social media. The Instagram account @indonesiatanpapacaran is present as a response to this issue, by voicing an invitation to abandon the practice of dating through moral and religious narratives. The existence of this account has led to various responses from the public, including students as a group of active social media users. This research aims to find out how students perceive the existence of the @indonesiatanpaparan account in the digital space. This research uses a descriptive qualitative approach with in-depth interview techniques and observation as data collection methods. The results showed that students gave diverse responses to the account, reflecting different attitudes, experiences, and perspectives in addressing the dating issues raised. This diversity also confirms that social media is a dynamic space that allows the formation of public opinion on complex social issues.