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All Journal JER Determinasi: Jurnal Penelitian Ekonomi Manajemen dan Akuntansi
Tamara, Ardelia Putri
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Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance

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Kualitas Layanan, Kualitas Produk, dan Kepercayaan Pelanggan terhadap Keputusan Pembelian Gen Z pada Aplikasi Shopee di Kota Surakarta Amira, Nura; Radia, Refi Ayu; Tribuana, Nazla Asyifah; Wibisono, Andrea Khoirunnisa; Tamara, Ardelia Putri
Determinasi: Jurnal Penelitian Ekonomi Manajemen dan Akuntansi Vol. 3 No. 2 (2025)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/determinasi.v3i2.467

Abstract

This study aims to analyze the effect of service quality, product quality, and customer trust on purchasing decisions on the Shopee e-commerce platform. This research uses a quantitative approachwith purposive sampling to determine the sample of respondents consisting of Shopee consumers in Surakarta. Data were collected through questionnairesdistributed to 150 respondents and analyzed using EViews software to test the hypotheses using multiple linear regression. The results indicate that servicequality, product quality, and customer trust have a positive and significant effect on purchasing decisions. Specifically, good service quality, such as quick responses, timely delivery, and effective customerservice, has a significant positive impact on purchasing decisions. Additionally, the product quality sold on Shopee, which can be assessed through reviews and ratings, also contributes to the improvement ofpurchasing decisions. Customer trust in products and the e-commerce platform, particularly regarding product authenticity and transaction security, influences purchasing decisions. The results of thecoefficient of determination test show an R-squared value of 0.819692 and an Adjusted R-squared value of 0.814058, meaning that the regression model explains approximately 81.97% of the variation in purchasing decisions. This study contributes significantly tounderstanding the factors influencing consumer behavior on e-commerce platforms, with a recommendation for future research to consider othervariables that may further clarify the factors affecting purchasing decisions.
The Impact of Work Ethic and Transformational Leadership on Employee Performance Mediated by Work Motivation at Company XYZ Tamara, Ardelia Putri; Maimun, Muhammad Halim
Jurnal Economic Resource Vol. 9 No. 1 (2026): October - March
Publisher : Fakultas Ekonomi & Bisnis Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57178/jer.v9i1.2332

Abstract

This study aims to analyze the effect of work ethic and transformational leadership on employee performance, with work motivation as a mediating variable at Company XYZ. The study is motivated by the importance of managing behavioral factors and leadership practices to enhance employee performance in a dynamic organizational environment. A quantitative approach was employed through a survey. Primary data were collected through closed-ended questionnaires distributed to 120 permanent employees of Company XYZ, selected using purposive sampling. Data were analyzed using Structural Equation Modeling based on Partial Least Squares (SEM-PLS) with the assistance of SmartPLS software. The results indicate that work ethic has a positive and significant effect on employee performance and work motivation. In contrast, transformational leadership has no significant direct effect on employee performance or work motivation. Work motivation has a positive and significant effect on employee performance. It mediates the relationship between work ethic and employee performance, but not the effect of transformational leadership. These findings suggest that improving employee performance is more effectively achieved by strengthening work ethic and enhancing work motivation than by relying on the direct or indirect influence of transformational leadership. The practical implications of this study highlight the importance of human resource management strategies that cultivate a strong work ethic and internal motivation to achieve sustainable performance improvements.
Co-Authors Amira, Nura Maimun, Muhammad Halim Radia, Refi Ayu Tribuana, Nazla Asyifah Wibisono, Andrea Khoirunnisa