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This study aims to analyze the economic and social impacts within the environmental context on the sustainability of catfish farming in Basanah Village. Environmental issues such as water quality, land availability, and land-use changes have significantly affected aquaculture practices. Moreover, the social dynamics of the surrounding community, including patterns of cooperation, public perception of catfish farming, and economic impacts on farmers’ income and welfare, are central to the investigation. This research employs a descriptive qualitative approach through field observations, in-depth interviews, and documentation involving local farmers, community leaders, and relevant stakeholders. The findings reveal that economic aspects, such as production cost efficiency and income improvement, are highly dependent on stable environmental conditions and strong social support. Conversely, environmental degradation and weak social participation hinder business development. Therefore, participatory-based policies integrating sustainable environmental management with the strengthening of local socioeconomic capacities are urgently needed. This study offers a significant contribution as a foundation for formulating empowerment strategies for environmentally and socially-based small-scale aquaculture enterprises at the village level.

In this era of globalization, business organizations must continue to improve the level of professional services in their respective fields. The use of PLN Mobile in the customer service department at PLN ULP Medan Baru has the potential to provide significant benefits in improving service quality and customer satisfaction. This application is expected to bring positive changes by providing easy access to information for customers regarding billing, blackouts, and other important information. The purpose of this research is to analyze the customer service and benefits of PLN Mobile at PLN ULP Medan Baru. This study uses a qualitative approach to explore an in-depth understanding of the benefits of using PLN Mobile in the customer service department at PLN ULP Medan Baru. A qualitative approach allows researchers to understand customer perspectives, views, and experiences in depth and contextually. Based on the results of the research and discussion conducted by the researchers, it can be obtained that the customer service and benefits of PLN Mobile at PLN ULP Medan Baru are quite good and very useful for customers at PLN ULP Medan Baru, Medan City to meet their electricity needs, complaints and complaints, however, socialization that has not been evenly distributed has resulted in there being PLN ULP Medan Baru customers who have not used the PLN Mobile application. The five dimensions of customer service used by researchers according to Tjiptono (2014: 18), namely the Tangibility, Reliability, Responsiveness, Assurance, and Empathy dimensions at PLN ULP Medan Baru are quite good.  

Education plays an important role in all aspects of human life. Education is the most effective tool to improve the quality of individuals to be more productive. Competition between formal educational institutions, especially at the Vocational High School (SMK) level, so that schools compete to improve the quality and quality of education to attract attention and seize market share and offer the services provided. Therefore, schools must design strong marketing strategies in order to make students interested and satisfied with the services provided. Several aspects that affect student satisfaction such as education costs, location and quality of service. This study aims to determine and analyze which factors are the most dominant influencing student satisfaction among education costs, location and service quality. The population in this study were 855 students at SMK PAB 2 Helvetia. With the Slovin formula, the number of samples obtained is 86 students of SMK PAB 2 Helvetia. Data were taken by distributing questionnaires to students which were then measured using a Likert scale. The data analysis technique used Multiple Linear Regression. This study uses SPSS 20 as data processing. The results showed that simultaneously the cost of education, location and service quality had a significant positive effect on student satisfaction. While partially the cost of education, location and service quality have a significant positive effect on student satisfaction.