Consumer behavior, especially in online shopping, has evolved significantly due to advances in digital technology. The researcher aims to examine how price and product quality affect customer purchases on Tokopedia. A quantitative research approach was used, involving 52 active Tokopedia users as respondents. Data were analyzed using multiple linear regression through IBM SPSS version 29. The findings show that product quality and price have a significant influence and lead to a positive impact in shaping consumer purchasing decisions. Between the two, price has a greater influence, with a coefficient value of 0.413 compared to 0.272 for product quality. The R² value of 0.419 indicates that both elements contribute 41.9% of the variance in purchasing decisions. These results highlight the importance of a competitive pricing strategy and providing products that meet customer expectations to drive sales on digital platforms. However, other elements such as customer reviews, service quality, and seller reputation should also be considered to support better purchasing decisions.

The lack of integration of ethical principles into corporate social responsibility (CSR) practices remains a common issue, posing significant challenges in building public trust and ensuring business sustainability. This study aims to examine how the implementation of business ethics can enhance the effectiveness of CSR within corporate environments. The research employs a literature review method, analyzing various academic publications, regulatory frameworks, and corporate reports relevant to business ethics and CSR. The findings reveal that consistent application of ethical values can deepen the meaning and impact of CSR initiatives, improve corporate reputation, and strengthen relationships with stakeholders in a more meaningful and sustainable manner.Nevertheless, several challenges persist, particularly in the form of organizational cultural differences and the suboptimal internalization of ethical principles into corporate systems and work culture. Therefore, strategic efforts are required to ensure that business ethics are not merely treated as normative concepts, but are truly embraced as core values in CSR practices aimed at achieving social and environmental sustainability.

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.

The development of early childhood social-emotional intelligence is an important aspect in the formation of character and social adaptability of children. This community service activity aims to enhance the understanding and competence of teachers and prospective PAUD educators through a national seminar that focuses on their strategic role in supporting children's social-emotional development. The implementation method is an interactive seminar involving expert speakers, group discussions, and practical case studies. The results of the activity showed a significant increase in participants' knowledge of the concept of social emotional intelligence, effective learning techniques, and strategies for managing children's emotions and positive social interactions. In addition, this seminar succeeded in encouraging teachers and prospective educators to apply a more empathetic and responsive learning approach to the emotional needs of early childhood. This activity makes a significant contribution to strengthening the role of educators as primary facilitators in the development of children's social-emotional intelligence, which ultimately supports the creation of a conducive and inclusive learning environment.

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.

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.

This study aimed to determine the effect of talking stick learning model on students' self-confidence in geography class X SMAN 1 Srengat Blitar. This study used a quantitative approach of quasi-experimental design with nonequivalent control group design. The sample in this study was selected using purposive sampling technique with 34 students in the control class and 34 students in the experimental class. The data in this study were obtained through the results of students' self-confidence questionnaire scores which were analyzed by the Independent Sample T-test and Effect size test. From the results of this study, it can be seen that the talking stick learning model has an effect on student confidence as evidenced by the acquisition of a sig (2-tailed) value of 0.000 <0.05. This study shows that the implementation of the talking stick model can increase students' active participation in learning which can then increase students' self-confidence.

This community service aims to foster and develop an entrepreneurial spirit among teenagers in Sanrobone Village, Takalar, through the optimization of Micro, Small, and Medium Enterprises (MSMEs) based on local potential. Teenagers are identified as strategic assets that need to be empowered for economic independence and job creation. The method of implementing this activity adopts a participatory and educational-practical approach, including the preparation stage, implementation of training and mentoring, and monitoring and evaluation. A total of 35 teenagers from Sanrobone Village were actively involved in a series of basic entrepreneurship training, identification of local business opportunities, technical production skills workshops, and simple digital marketing. The results of the activity showed a significant increase in teenagers' understanding of the concept of entrepreneurship from just selling to creating value. They succeeded in identifying 15 potential business ideas from local resources and 20 teenagers were able to produce product prototypes from these ideas. In addition, the initiative to form five micro-business groups initiated by teenagers is clear evidence of the growth of motivation and collaboration. In conclusion, this program is effective in laying a strong foundation for the development of a youth entrepreneurship ecosystem in Sanrobone Village, which is supported by the potential of natural resources and the enthusiasm of the participants. It is recommended that there be ongoing mentoring, facilitation of access to micro-capital, strengthening of networks, and integration of entrepreneurship curriculum in schools to ensure the sustainability and long-term impact of the program.

This study aims to analyze students’ difficulties in understanding the concept of Stokes’ Theorem in the Vector Calculus course. The method used is a descriptive qualitative approach with data collected through semi-structured interviews with mathematics education students who have studied the topic. The results show that students struggle to comprehend the relationship between line integrals and surface integrals, as well as to connect the concept of curl with vector direction in three-dimensional space. Limited understanding of prerequisite material and the lack of visual media further exacerbate these difficulties. Students reported that learning methods based on visualization and group discussion were helpful. This study recommends the use of contextual learning strategies and interactive media to improve students’ understanding of abstract concepts in Stokes’ Theorem.

This study aims to improve students' learning outcomes in Social Sciences (IPS) through the implementation of the Science, Technology, Engineering, and Mathematics (STEM) learning model. The background of this study is based on the low learning outcomes of IPS in class VII of SMP Negeri 3 Jakarta, as well as the lack of variations in innovative learning models. The study used the Classroom Action Research (CAR) method of the Kemmis and McTaggart model which was carried out in two cycles. Each cycle includes the stages of planning, implementation, observation, and reflection. The subjects of the study were 36 class VII-B students. Data collection techniques used learning outcome tests, observations, interviews, and documentation. The results of the study showed a significant increase in student learning outcomes. In the first cycle, the percentage of students who achieved the Minimum Completion Criteria (KKM) was 77.77%, increasing to 91.6% in the second cycle. In addition, student activity in learning activities also increased. These results prove that the Science, Technology, Engineering, and Mathematics (STEM) learning model is able to integrate social studies concepts with real situations, thus facilitating students' understanding and improving the quality of learning.