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p-Index From 2021 - 2026
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All Journal Dinasti International Journal of Education Management and Social Science Advances in Economics & Financial Studies
Kosasih Kosasih
Universitas Sangga Buana YPKP Bandung, Indonesia
Economics, Econometrics & Finance Education

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The Effect of Service Quality and Personal Marketing on Customer Satisfaction and it’s Implications on Syifamart Customer Loyalty (Survey at Syifamart Putri Jalancagak, Subang Regency) Dian Fitri Damayanti; Kosasih Kosasih; Farida Yuliaty; Ayi Wahid
Dinasti International Journal of Education Management and Social Science Vol. 7 No. 3 (2025): Dinasti International Journal of Education Management and Social Science (Febru
Publisher : Dinasti Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/dijemss.v7i3.6115

Abstract

This study aims to analyze the influence of service quality and personal marketing on customer satisfaction and its implications for customer loyalty at SyifaMart Putri Jalancagak, Subang Regency. The background of this study is based on the increasing competition in the retail business that demands every business actor to be able to provide superior service and build personal relationships with customers. This study used a quantitative method with a survey approach to 105 customers selected through a purposive sampling technique. Data were collected through questionnaires and analyzed using path analysis to test the direct and indirect effects between variables. The results showed that service quality and personal marketing have a positive and significant effect on customer satisfaction, and customer satisfaction has a significant effect on customer loyalty. In addition, customer satisfaction was proven to mediate the effect of service quality and personal marketing on customer loyalty. This study concluded that improving service quality and implementing an effective personal marketing strategy can strengthen SyifaMart's customer satisfaction and loyalty in a sustainable manner.  
The Impact of Transformational Leadership Style of School Principals and Work Motivation on Teacher Performance: An Empirical Study Muhamad Qumarudin; Kosasih Kosasih; Yuyun Yuniarsih
Advances in Economics & Financial Studies Vol. 4 No. 2 (2026): February - May
Publisher : Yayasan Pendidikan Bukhari Dwi Muslim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60079/aefs.v4i2.755

Abstract

Purpose: This study aims to examine the influence of principals’ transformational leadership and teachers’ work motivation on the performance of senior high school teachers in Keerom Regency, Papua. The study addresses concerns regarding suboptimal teacher performance, limited instructional innovation, and leadership practices that remain largely administrative rather than transformational. Research Method: This study employed a quantitative approach with descriptive and inferential designs. The population consisted of 113 senior high school teachers in Keerom Regency, of whom 88 were selected using the Slovin formula with a 5% margin of error. Data were collected through structured questionnaires based on indicators of transformational leadership, work motivation, and teacher performance. The data were analyzed using multiple linear regression to examine the partial and simultaneous effects of the independent variables. Results and Discussion: The findings show that transformational leadership has a positive and significant effect on teacher performance. Work motivation also has a positive and significant effect, emerging as the dominant factor. Simultaneously, transformational leadership and work motivation significantly contribute to improving teacher performance. Implications: The findings suggest that principals should strengthen transformational leadership practices, while policymakers should support teacher motivation through professional development and conducive work environments. Originality: This study contributes by examining teacher performance in the specific context of the geographically challenging border areas of Keerom Regency, Papua.
Co-Authors Ayi Wahid Dian Fitri Damayanti Farida Yuliaty Muhamad Qumarudin Yuyun Yuniarsih