This study was conducted with the aim of evaluating the extent to which sand quality influences consumer purchasing decisions in the sand mining area located in Kalicilik Hamlet, Candirejo Village, Blitar Regency. The background of this research is based on the fact that in the construction and development sector, the quality of building materials is a very crucial factor. Sand, as one of the main components in construction, plays a vital role in determining the final outcome of a construction project. Therefore, the quality of the sand used is a primary consideration for consumers in choosing a location or sand seller. This study applies a quantitative approach using a survey method as a data collection technique. Respondents in this study consisted of 74 consumers who actively make purchases at the sand mining location. Data were obtained through the distribution of questionnaires containing questions related to consumer perceptions of sand quality and their decisions in making purchases. The collected data were then analyzed using simple linear regression analysis techniques run with the help of SPSS software. The results of the analysis indicate a highly significant relationship between sand quality and consumer purchasing decisions. This is demonstrated by the coefficient of determination (R²) of 0.540, meaning that 54% of the variation in consumer purchasing decisions can be explained by sand quality. Furthermore, the significance value of 0.000 strengthens this finding, indicating that the relationship is not a coincidence. Therefore, this study concludes that the better the quality of sand offered by the mining company, the higher the likelihood of consumers deciding to purchase. The implication of these results is that businesses in the sand mining sector need to pay special attention to the quality of the products they offer.

Worldwide trade is conducted 80% through maritime routes, including the export and import of coal. Coal is a non-renewable energy source, often used as fuel for power plants. As technology advances, detecting metal contaminants in coal cargo becomes crucial to prevent contamination of coal with metal materials. This study aims to (1) understand the operation of a conveyor in transporting coal, and (2) assess how the Proximity inductive sensor detects metal presence. The methods used in this research include real data analysis and literature review, conducted aboard the ship. The researcher designed and developed a prototype system for this purpose. The Proximity inductive sensor is utilized to detect metal contaminants, such as aluminum, iron, and stainless steel, among the coal cargo. The research was carried out during sea practice (prola) aboard the WHS ISKANDAR 1. The findings indicate that the conveyor is driven by a DC motor, and the Proximity inductive sensor effectively detects metals to separate them from the coal cargo, thus purifying the coal from metal contaminants.

Extreme climate change in Indonesia, caused by air pollution from the use of fossil energy, has encouraged the development of renewable energy technology, including Wind Power Plants (PLTB). This technology is increasingly important for providing clean energy, especially in the maritime industry. The aim of this applied scientific work is to provide a battery charging solution when the emergency battery charger charging system on commercial ships experiences problems. To make it easier to monitor the power produced by wind power plants and also battery capacity via a smartphone application in real time. The method used in this applied scientific research research is experimental. The results of calculating the average power during testing at night show an average power of 10.22 Watt/min and an average current of 0.78 A. So it can be concluded that battery charging takes 11.53 hours. Meanwhile, the results of calculating the average power during testing during the day show an average power of 13.41 Watt/min and an average current of 1.02 A. So it can be concluded that charging the battery lasts for 8.82 hours. From the two data obtained, it can be concluded that charging is optimal during the day because the efficient charging time is 8.82 hours.

This research examines the suitability of e-commerce practices with the principles of fiqh muamalah in Islam, especially in the aspects of transaction validity, justice, consumer protection, and the application of business ethics. The method used is descriptive qualitative with a literature research approach to analyze Islamic economic theory, fiqh muamalah regulations, and their relevance to digital transaction practices. The research data was obtained from secondary literature sources, including books, scientific journals, fatwas from the National Sharia Council of the Indonesian Ulema Council (DSN-MUI), as well as references from the Qur'an and Hadith.The results show that e-commerce practices are acceptable in Islam as long as they fulfill principles such as transparency, honesty, and transaction security. Salam and istisna' contracts are identified as the most suitable contracts for digital transactions as they fulfill the terms and conditions stipulated in Islamic law for buying and selling. However, challenges such as uncertainty (gharar), usury, fraud (tadlis), and gambling (maisir) need attention through regulation and the application of business ethics based on Islamic law. This research is expected to contribute to business people, policy makers, and academics in integrating Islamic economic values with technological advances to build a fair and sustainable business ecosystem.Keywords: E-commerce, Fiqh Muamalah, Islamic Economics, Salam Contract, Maqashid Sharia.

This research aims to examine the application of business ethics in Islam, particularly moral principles in muamalah transactions, as well as the challenges faced in its implementation in the modern era. Using a descriptive qualitative approach based on a literature study, this research highlights key values such as honesty, openness, trustworthiness and responsibility as the foundation of Islamic business ethics. The case study of Toko Roti Gembul in Pontianak shows how these principles can be applied in the business world. The results also reveal various challenges, such as a lack of understanding of sharia concepts, weak supervision, and not optimal integration of Islamic values in business strategies. Al-Ghazali's thoughts on positive motivation and business as fardhu kifayah also strengthen the urgency of ethics in building a fair and sustainable economic system. This research is expected to be an academic and practical contribution in encouraging the application of Islamic values in modern business activities.Keywords: Islamic business ethics, morals, muamalah, transactions, sharia principles.

This article discusses the importance of a multicultural approach in guidance and counseling, in a country rich in cultural diversity. Within this context, counselors are expected to understand and appreciate the cultural differences faced by clients, including different values, norms, and perspectives. Multicultural counseling not only increases the effectiveness of the counseling process, but also creates a safe counseling environment for clients to express themselves. By understanding the client's cultural background, the counselor can minimize potential conflicts and increase confidence in the counseling relationship. This research uses a qualitative method with a literature study to explore the challenges and solutions in multicultural counseling practice. The findings of this article suggest that sensitivity to cultural diversity is essential for successful inclusive and responsive counseling.

This study aims to analyze the influence of regional financial management, technology utilization, and regional financial accounting systems on the quality of regional government financial reports. The method used in this study is quantitative. Data were obtained by distributing questionnaires to respondents who had been determined using purposive sampling techniques. Data analysis techniques used in this study include descriptive statistics, validity tests, reliability tests, classical assumption tests, and multiple linear regression analysis. The results showed that regional financial management had a significant effect on the quality of regional government financial reports with a t count of 6.333> t table 1.668 and a significance of 0.000 <0.05. The use of technology had a significant effect on the quality of regional government financial reports with a t count of 5.837> t table 1.668 and a significance of 0.000 <0.05. The Regional Financial Accounting System had a significant effect on the quality of regional government financial reports with a t count of 4.102> t table 1.668 and a significance of 0.000 <0.05.

The problem of plastic waste in Indonesia is increasingly urgent as plastic consumption increases and sustainable management is lacking. This research aims to explore the potential of utilising plastic bottle waste as a creative and environmentally friendly product in the form of "ReBloom" pencil case. This research uses a descriptive quantitative approach, which collects data from respondents aged 18-25 years old in Surabaya to measure perceptions and interest in recycled products. The study results show that the majority of respondents are interested in environmentally friendly products at an affordable price. The business feasibility analysis revealed that ReBloom has a positive economic outlook with a break-even point that can be achieved within a certain production quantity. Besides contributing to the reduction of plastic waste, the product also raises public awareness of the importance of recycling and circular economy. Digital marketing strategies and collaboration with communities are proposed to increase market acceptance. This research confirms that sustainability-based innovation can be a promising business opportunity while contributing to environmental preservation.

This study aims to determine the impact of labor costs, marketing costs, and sales volume on the net profit of manufacturing companies in the food and beverage sub-sector listed on the Indonesia Stock Exchange (IDX) for the years 2020-2024. This research utilizes a descriptive research type with a quantitative approach. The population of this study includes manufacturing companies in the food and beverage sub-sector that are listed on the IDX for the years 2020-2024, totaling 48 companies. The sampling technique employed is purposive sampling, involving 20 companies. The data source for this research utilizes secondary data. Data collection methods are obtained from the Indonesian Stock Exchange (IDX). This study employs data analysis methods, which include descriptive statistical tests, classical assumption tests, and hypothesis testing, comprising multiple linear regression analysis, F test, t test, and the coefficient of determination (R2) test.The results of this study indicate that labor costs do not have a significant effect, while marketing costs and sales volume do have a significant effect.

This study aims to enhance students' engagement and mathematics achievement through the implementation of differentiated learning. The method employed is classroom action research conducted in two cycles, each consisting of planning, action implementation, observation, evaluation, and reflection stages. The research was carried out during the odd semester at SMK Muhammadiyah 1 Sleman with the participation of 28 students from the XI Automotive class. The findings reveal a significant improvement in students' engagement and learning outcomes. In the first cycle, the average engagement score was 9.51, which increased to 17.12 in the second cycle. Regarding learning outcomes, in the first cycle, only 10 students (35,71%) achieved the passing grade, while 18 students (64.29%) did not, with an average score of 64.75. In the second cycle, the number of students achieving the passing grade sharply increased to 28 students (100%) with an average score of 84.92. These results demonstrate that differentiated learning effectively enhances student engagement and mathematics achievement in the XI Automotive class at SMK Muhammadiyah 1 Sleman during the 2024/2025 academic year