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Coal quality must be controlled from the pit area to the ROM stockpile to ensure compliance with market specifications. However, hauling and stockpiling processes often lead to changes in coal characteristics. This study aims to analyze variations in proximate parameters between coal from Pit B1 and ROM Stockpile Km4 at PT Trisensa Mineral Utama and to identify factors contributing to these changes. The methodology includes field sampling at both locations, sample preparation based on ASTM standards, and laboratory testing of inherent moisture, residual moisture, ash content, volatile matter, and fixed carbon. The results indicate that coal undergoes quality changes after being stored in the stockpile, marked by a decrease in inherent moisture of 2.54% (from 17.64% to 15.10%), a decrease in residual moisture of 1.42% (from 17.17% to 15.75%), a slight reduction in ash content of 0.16%, a decline in volatile matter of 0.28%, and a reduction in fixed carbon of 0.18%. These changes are influenced by field conditions, material contamination during mining, rainfall, coal porosity, and handling activities at the stockpile. The findings highlight the need for improved sampling management, better surface water control, and stricter material handling procedures to minimize coal quality degradation.

Mine disposal materials such as tailings, overburden, and waste rocks are critical components in mining operations that require comprehensive understanding of their geotechnical properties to ensure stability and safety of storage facilities. This literature review aims to analyze the role of particle gradation and mineralogical composition in determining shear strength and compressibility of mine disposal materials, with particular focus on nickel mining. A sistematic literature review method was employed by analyzing 30 scientific publications from 2019-2025 obtained from various academic databases. The review findings indicate that particle size distribution (gradation) has significant influence on shear strength and compressibility, where materials with coarser gradation and higher coefficient of uniformity (Cu) exhibit greater shear strength and lower compressibility. Mineralogy, particularly clay mineral content, increases cohesion and microporosity but also increases compressibility under loose conditions. Studies on nickel mine waste demonstrate that ferronickel slag possesses favorable drainage characteristics suitable for rockfill material, while tailings require strict gradation control. In conclusion, comprehensive characterization integrating gradation parameters (Cu, Cc, D50) with mineralogical analysis (XRD, XRF) is essential for predicting mechanical behavior of mine disposal materials and designing safe storage facilities.

This Community Service Program was conducted to enhance the competencies of supervisors in the logistics and transportation division of an international cargo company through leadership training tailored to the characteristics of Generation Z. The program aimed to strengthen participants’ capabilities in managing workplace dynamics, improving team communication, and promoting more effective performance through a flexible leadership approach. The training was held on November 18, 2025, at the company’s head office in Bekasi and was attended by 16 supervisors. The methods used included material presentations, group discussions, case study analysis, and an interactive question-and-answer session. The results indicate an increased understanding among participants regarding Generation Z work behavior, appropriate leadership principles, and more adaptive management strategies. This program is expected to provide sustainable benefits for human resource development and to enhance leadership effectiveness within the logistics sector.

This study aims to determine the optimal pectinase enzyme concentration and hydrolysis duration for the most preferred physical, chemical, and organoleptic characteristics of kweni mango syrup. The research was conducted from October 2024 to August 2025 at the Integrated Laboratory and Basic Science Laboratory of the Agricultural Institute (INTAN) Yogyakarta using a Completely Randomized Design (CRD) with a factorial pattern consisting of two factors and two replications. The first factor was the pectinase enzyme concentration (0%, 0.25%, 0.50%, and 0.75%), and the second factor was the hydrolysis duration (0, 30, and 60 minutes). Observation parameters included yield, vitamin C, viscosity, pH, total soluble solids, and organoleptic attributes. Data were analyzed using ANOVA at a 5% significance level followed by Duncan’s Multiple Range Test (DMRT). The results showed significant effects of both pectinase enzyme concentration and hydrolysis duration on yield, viscosity, total soluble solids, and organoleptic characteristics (color, taste, aroma, and overall acceptability), while no significant effects were observed on vitamin C content and pH. The best formulation was obtained using 0.50% pectinase enzyme concentration with a hydrolysis duration of 30 minutes.

Biodiversity is essentially a reflection of the number of species and individuals inhabiting a community, as seen in the Pteridophyta group. These plants, which have evolved to have differentiated roots, stems, and leaves, play an important role in forest systems, primarily as protectors of the soil surface from the effects of erosion, in addition to contributing to the decomposition of organic matter that produces nutrients, and being a major part of the producer chain in the trophic structure. The Jaboi hot spring area, located in the Sukajaya District of Sabang City, exhibits unique ecological characteristics, influenced by the presence of the Jaboi volcano, which gives rise to geothermal phenomena such as fumarole activity, hot steam emissions, and the emergence of high-temperature water flows. This geothermal dynamic directly causes alterations in the physical and chemical conditions of the local soil, thereby shaping habitat characteristics and influencing the existence of vegetation, including ferns. To date, there is little scientific information available on the diversity of ferns in this area. Therefore, this study was conducted to examine and measure the diversity of ferns in the Jaboi hot spring area. The study was conducted in October 2025 using an exploratory survey approach to determine plots and purposive sampling techniques for field data collection. Diversity analysis was based on the Shannon-Wiener index (Ĥ) formula. Based on the identification results, 15 species of ferns from a total of 6 families and 433 individuals were found. The diversity index obtained (Ĥ=2.490171) indicates a moderate level.

This research originated from a concern about the existence of villages that are factually underdeveloped, but aren't recognized as 3T (Terdepan, Tertinggal, dan Terdepan) regions in the national regulatory framework. This research was conducted in Kabupaten Banyumas, which consists of 301 villages, with several villages indicated to be underdeveloped. Through the analysis of secondary data from BPS, Dinsospermades, and Bappedalitbang Banyumas, this study took 6 sample villages to analyze in order to understand the pattern of underdevelopment that is not covered by the formal 3T status. The purpose of this study is to highlight the reality of de facto remote areas that aren’t administratively recognized as 3T areas, and therefore don't have access to special funding schemes, and to examine the potential for replication of 3T area policies that can be adapted in Kabupaten Banyumas, with adjustments to local characteristics. Using a qualitative approach based on in-depth interviews with village government officials, this research mapped the needs, barriers, and opportunities for more contextualized policy interventions. This research recommends the development of a planning and budgeting model based on local needs and a social justice approach in the distribution of development resources. Thus, Banyumas can become an alternative policy laboratory to address development inequality outside the formal framework of the 3T regions.  

Effective learning requires teachers to be able to select and apply innovative learning strategies so that the learning process becomes more meaningful for students. Innovation in learning strategies is important because it can increase student engagement, motivation, and learning outcomes through approaches that are tailored to their needs and characteristics. This study aims to describe the role of innovation in learning strategies as the key to encouraging improved student learning outcomes. The method used is a qualitative literature study by collecting and analyzing various literature sources in the form of books, journals, and relevant scientific documents. The findings show that innovative learning strategies, such as problem-based, collaborative, contextual learning, and the use of technology, can improve students' critical thinking, creativity, and active participation. In addition, strategies creatively designed by teachers can create a more engaging learning atmosphere and motivate students to achieve learning objectives. This study implies the importance of improving teacher competence in developing innovative learning strategies as an effort to achieve optimal learning outcomes.

This article discusses the role of Special Assistant Teachers (GPK) in creating an effective inclusive classroom, where all students, including children with special needs, can participate optimally in the learning process. GPK plays the role of facilitators, mediators, and regular teacher partners in accommodating diverse learning needs. This role is realized through individual needs assessments, adjustment of learning strategies, modification of teaching materials, and provision of academic and social-emotional support to students. The results of the study show that the success of inclusive education is greatly influenced by GPK's professional competence, especially in understanding the characteristics of children with special needs and implementing differentiatory learning. In addition, effective collaboration between GPK and regular teachers is a key factor in creating an inclusive and non-discriminatory learning environment. Institutional support, such as inclusive school policies, the availability of infrastructure, and the support of school leaders, also play an important role. This article emphasizes the need for sustainable professional development, clear division of duties, and supportive education policies to strengthen GPK's role in promoting inclusive education equity in Indonesia.

Cone is a type of biscuit in wafer qualification that is cone-shaped and used as an ice cream holder. Cone is usually made from wheat flour with the addition of other ingredients as supporting ingredients. Research on making ice cream cones is still rarely done, especially making ice cream cones using red sorghum flour and Eucheuma cottonii puree. This study aims to determine the chemical, physical, and organoleptic characteristics of ice cream cones that are high in fiber and protein, and preferred by consumers. The research used a two-factor factorial completely randomized design (CRD), namely the ratio of wheat flour: red sorghum flour ((90:10), (80:20), (70:30)) and the addition of Eucheuma cottonii seaweed puree/100ml water (5%, 10%, 15%). The results showed that the best treatment was found in the treatment of the ratio of wheat flour: red sorghum flour (80: 20) and the percentage of Eucheuma cottonii puree 10% with fiber content of 4.14% and protein content of 9.73% and organoleptic tests with the results of color 3.53 (neutral), taste 4.23 (like), aroma 3.83 (neutral-like), texture 3.63 (neutral-like), overall liking 4.20 (like). Red sorghum flour ice cream cone and seaweed puree (Eucheuma cottonii) can provide an alternative in increasing food products that are high in protein and fiber.

Jam is a paste-shaped food usually made from fruit which is quite popular from children to teenagers. Aloe vera is one of the 10 best-selling plant species in the world which was developed as a raw material in the pharmaceutical and food industries, especially in countries on the European continent. Inulin is a dietary fiber contained in various types of vegetables and fruits that are beneficial for digestive health. Purple sweet potato is used in the addition of jam because purple sweet potato contains vitamin A, B vitamins and antioxidants. The purpose of this study was to determine the concentration of inulin thickener and purple sweet potato extract with high antioxidant activity, and to determine the characteristics of the panelists' preference to jam. This study used a completely randomized design with the first factor being variations in the concentration of inulin as thickener 1, 2, and 3 g. The second factor was the addition of purple sweet potato extract (40, 50, and 60%). The results of this study indicated that the jam formulation with high antioxidant activity on variations in the concentration of 1 g of inulin thickener with the addition of 60% purple sweet potato extract. The jam formulation that was preferred by the panelists was found in variations in the concentration of 2 g of inulin with the addition of 40% purple sweet potato extract which had an overall value of 3,40 (neutral). Higher purple sweet potato extract, the higher the antioxidant activity of the jam. Purple sweet potato extract can be used as a source of antioxidants in jam making.

This community‑engagement study aimed to revitalize the Qur’anic ecosystem in Sempu Village (Ngancar District, Kediri Regency) by fostering inter‑generational synergy—among families, youth communities, and TPQ (Qur’an Study Groups)—using an asset‑based community development (ABCD) approach. The program identified and mobilised local assets such as TPQ students/alumni, active youth, community leaders, mosque/TPQ facilities, and locally established networks to strengthen Qur’an mentoring with a psycho‑spiritual dimension. The research employed a qualitative intervention method executed in three phases: asset mapping & diagnosis; design & implementation of the intervention; and program evaluation & reflection. Results indicated that youth attendance increased from 45 % to 78 %; the number of participating families rose from 18 to 32; and 90 % of TPQ administrators expressed the intention to continue the inter‑generational forum model on a regular basis. Discussion revealed that the intervention did more than improve attendance—it reinforced a sense of ownership, social connectedness, and internalization of Qur’anic values (spiritual well‑being). The psycho‑spiritual approach proved effective in strengthening youth identity and building a sustainable Qur’anic community culture. Limitations include the short duration of the intervention (12 weeks) and persistent communication barriers between generations related to time constraints and family workloads. Recommendations include conducting long‑term measurements, adapting the mentoring modules to accommodate family/youth time issues, and replicating the model in other villages with different characteristics.

This study aims to identify and describe the teaching process of Social Studies (IPS) in third-grade elementary school through direct observation. The method used involved an observation sheet designed in accordance with the research objectives to collect information on teacher and student activities, the teaching approach applied, and the use of teaching materials. The research findings revealed that although students were less actively involved, the lecture technique was still the main method in teaching Social Studies in third-grade elementary school. However, the practice of interactive instructional strategies, such as group discussions, the effective use of suitable instructional media is believed to enhance learners’ participation and foster greater motivation in the learning process. Furthermore, a harmonious interaction between educators and students also plays a role in establishing a supportive and comfortable learning atmosphere. The main obstacles include limited teaching materials and limited learning time. This study concludes that teaching Social Studies at the elementary school level needs to utilize a variety of interesting techniques and teaching materials to increase learning efficiency and foster student interest. These results provide useful empirical data as a basis for evaluating and improving Social Studies teaching in third-grade elementary school, so that it is more appropriate to the characteristics and needs of students.

This study aims to describe the characteristics of AIESEC Future Leaders (AFL) promotional content on the Instagram account @aiesecupnvy using a descriptive qualitative approach and Charles Sanders Peirce's semiotic analysis. Promotional content was chosen as the focus of the research because it plays a crucial role in building audience interest and understanding of the self-development programs offered. The research results indicate that AIESEC UPNVY utilizes several types of visual and verbal signs designed to attract attention and build emotional closeness with its target audience, namely students and young people. Content highlighting program benefits, testimonials from previous participants in the form of single words, expressions of delegates' happiness, and symbolic videos about togetherness proved effective in creating social proof and strengthening AFL's image as a program that provides valuable experiences. This strategy aligns with the AIDA principle, where each piece of content is designed to attract attention, generate interest, cultivate desire, and encourage registration action. Additionally, using a cutting-edge approach thru creative visuals, short narratives, and authentic content strengthens the promotional appeal on digital platforms. Overall, this study concludes that the AFL promotional content has been strategically and innovatively crafted, enabling it to enhance the effectiveness of marketing communication and help strengthen audience engagement with the program.

This research compares legal entity licensing systems in Indonesia and other ASEAN member states in response to the growing need for regulatory harmonization and improved ease of doing business within the region, particularly after ASEAN economic integration accelerated cross border investment activities. Differences in administrative requirements, processing duration, and the level of digitalization among countries often create barriers for business expansion, making a comparative assessment essential to understand Indonesia’s current position and identify potential improvements. The main objective of this study is to analyze the characteristics of Indonesia’s legal entity licensing system by comparing it with ASEAN countries that have adopted more advanced administrative reforms, while also evaluating how regional best practices can inform national policy development. The study applies a qualitative method using a descriptive comparative approach, focusing on regulatory frameworks, institutional arrangements, levels of digital integration, and indicators related to ease of doing business. The results show that although Indonesia has introduced electronic licensing systems, several challenges remain, including uneven implementation, overlapping institutional authority, and variations in service quality across regions. In contrast, countries such as Singapore and Malaysia have established licensing systems that are more integrated, transparent, and oriented toward user needs, resulting in greater legal certainty for investors. These findings highlight the importance of strengthening regulatory alignment, improving digital system integration, and enhancing institutional capacity so that Indonesia can reach efficiency levels comparable to its regional counterparts and contribute to a more competitive and sustainable ASEAN business environment.

This study aims to analyze inventory control of catfish seeds at ABC Company by comparing the conventional inventory method represented by the Economic Order Quantity (EOQ) approach and the Just In Time (JIT) system in order to improve cost efficiency. This research employed a descriptive quantitative approach using a case study design. Data were collected through direct observation, semi-structured interviews with company management, and documentation of inventory and cost records for the 2024 operational period. The analysis method involved calculating optimal order quantities, ordering frequency, delivery frequency, and total inventory costs using EOQ and JIT formulas, followed by a comparative cost efficiency analysis. The results show that the conventional method resulted in a total inventory cost of Rp 75,050,000 per year with high ordering frequency. In contrast, the implementation of the JIT system reduced inventory costs to Rp 18,762,500 per year, achieving a cost efficiency of 72%. These findings indicate that the JIT system is more cost-efficient than the conventional method; however, its implementation requires careful consideration of supplier capacity, logistics readiness, and biological risks associated with live inventory. This study contributes empirical evidence on the applicability of JIT in the aquaculture sector, which has different characteristics from manufacturing industries.

This study analyzes the effect of Bitcoin prices, the LQ45 Index, mutual fund net asset value (NAV), and the net profit margin (NPM) of gold mining companies on the price of gold as a safe haven asset within the context of the Indonesian financial market. Gold is often seen as a safe haven asset that is the primary choice of investors when economic uncertainty increases, but the relationship between gold and various other investment instruments still requires further study. This study uses a multiple linear regression method with a robust standard errors approach to analyze 420 monthly and quarterly data observations during the 2018-2022 period. The results of the study found that the price of Bitcoin and the NPM of gold mining companies had a significant positive influence on the price of gold, while the LQ45 Index had a significant influence effect. Meanwhile, the NAV of mutual funds showed a significant positive influence that was not in line with the initial hypothesis. These findings indicate that gold does not always function absolutely as a safe haven asset, as its role is contextual and still influenced by the dynamics of other investment instruments such as digital assets, stock markets, and mutual funds. The study's results make an important contribution to financial literature by proving that the safe haven characteristics of gold are complex and dynamic, so investors need to consider various factors and market conditions before allocating investments to gold as a hedging strategy in their portfolios.

The current practice of Islamic Religious Education (PAI) learning in schools still faces the challenge of the dominance of conventional methods that tend to be teacher-centered, so that the aspect of internalization of values by students is often not optimal . This article aims to describe the characteristics and conceptual relationships between the Social Interaction and Personal learning models in the context of PAI, while also examining the relationship between the two models with constructivist and humanistic learning theories . Through a literature study, the analysis shows that the Social Interaction model based on constructivist theory emphasizes the construction of knowledge through group dynamics, collaboration, and social interaction . Meanwhile, the Personal model based on humanistic theory is oriented towards the development of individual potential, self-awareness, and spiritual reflection . The results of the study conclude that the integration of these two models offers a holistic learning approach, where students not only understand PAI material cognitively, but are also able to actualize religious values through real social experiences and deep personal appreciation .

This study aims to analyze the improvement of students’ knowledge and the alignment of the Civic Education learning model with the characteristics of third-grade students at SDN Kadipiro. The research problem arises from the tendency of Civic Education in elementary schools to rely heavily on lecture-based instruction, which results in low student engagement and limited comprehension of abstract concepts such as rights and obligations. A descriptive qualitative approach was employed through observations, interviews, and documentation to obtain a comprehensive picture of the learning process, the instructional model applied, and classroom dynamics. The findings reveal that the teacher implemented a game-based Discovery Learning model that emphasizes exploration, categorization, verification, and independent conclusion-making by students. This model proved effective, as evidenced by 85% of students being able to understand and distinguish examples of rights and obligations in accordance with the Civic Education learning outcomes. The study also indicates that game-based learning is more compatible with the students’ predominant visual and kinesthetic learning tendencies, enabling them to maintain focus more effectively than when using traditional lecture methods. However, several challenges emerged, including variations in students’ writing literacy skills and the absence of a structured assessment rubric. These findings underscore the need for flexible instructional design, the integration of concrete learning media, and the implementation of more systematic formative assessment practices. Future research is recommended to develop differentiated instructional strategies and to utilize more diverse media to accommodate the needs of heterogeneous classrooms.

This community service program aimed to enhance students’ knowledge and awareness regarding the use of natural ingredients in producing lavender-scented air freshener gel as a safe and environmentally friendly alternative. The activity employed an educational outreach approach, combining material presentations, video demonstrations, and direct observation of product samples. The program engaged 32 eighth-grade students at MTsN 1 Palangka Raya. Through these activities, students learned about the various natural ingredients used in the gel, the functional properties of each ingredient, and the environmental and health benefits of lavender aromatherapy. The results of the program indicated significant improvements in students’ understanding of gel production concepts and their ability to identify the characteristics of the products during observation. Students showed high enthusiasm for using natural ingredients in household products, which also contributed to enhancing their environmental literacy. Furthermore, the program provided MBKM students with valuable experience in delivering applied science education. The success of this program not only fostered students' awareness of sustainable practices but also provided an engaging learning experience. Based on the positive outcomes observed, the program is recommended for replication in other schools, with the addition of hands-on practice sessions to further reinforce the concepts learned.

Plastic waste detection in indoor environments is an essential challenge in the development of intelligent cleaning systems and robotic automation. Small and medium-sized plastic debris is often difficult to identify using conventional methods due to variations in color, shape, and reflectance. This study proposes an image-processing-based approach that combines thresholding and contour detection techniques to improve the accuracy of detecting plastic objects on floor surfaces. The initial stage involves converting the image into a color space that is more stable under varying illumination, such as HSV or grayscale, to reduce the influence of lighting intensity. Subsequently, adaptive thresholding is applied to separate plastic objects from the background by using dynamic threshold values tailored to the image’s conditions. The segmentation results are refined through morphological operations such as opening and closing, enabling the removal of small noise and enhancing the clarity of object boundaries. The core stage of the system employs contour detection to extract object shapes and areas, allowing the identification of plastic waste based on size, perimeter, and specific geometric characteristics. Experiments were conducted under different lighting conditions and various floor types, and the results demonstrate that the proposed approach successfully detects plastic debris with satisfactory accuracy and relatively fast processing time. Therefore, this method is suitable for implementation in robotic cleaning systems, indoor cleanliness monitoring devices, and other computer vision applications requiring real-time and efficient object detection.