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All Journal OPSI IIJSE
Satitidjati Dewayana, Triwulandari
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Economics, Econometrics & Finance Industrial & Manufacturing Engineering

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Improving Operational Performance: The Influence of Buyer-Supplier Relationship, Supply Chain Quality, and Firm CSR to Enhancing Supplier Performance Widiaswara, Ardhia; Santosa, Wahyuningsih; Satitidjati Dewayana, Triwulandari
Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE) Vol 8 No 1 (2025): Sharia Economics
Publisher : Sharia Economics Department Universitas KH. Abdul Chalim, Mojokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31538/iijse.v8i1.5645

Abstract

This research aims to analyze the influence of the buyer-supplier relationship, supply chain quality, and corporate social responsibility on supplier performance, as well as how supplier performance influences operational performance. This study employs a Conclusive Design with a Cross-Sectional Design type. Data is collected through Multiple Cross-Sectional methods, where data is taken one time from one group of respondents in stages. A non-probability sampling technique was applied because not all members of the population could become samples. The results of the research indicate that there is a positive influence of the buyer-supplier relationship and corporate social responsibility on supplier performance. Additionally, there is a positive influence of the buyer-supplier relationship, corporate social responsibility, and supplier performance on operational performance. However, no positive influence of supply chain quality on supplier performance or operational performance was found.
Evaluating music teacher performance through 360-Degree Feedback: A study in a music education institution Dewi, Amelia Miranti; Satitidjati Dewayana, Triwulandari; Suhardini, Didien
OPSI Vol 18 No 1 (2025): OPSI - June 2025
Publisher : Jurusan Teknik Industri, Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v18i1.11933

Abstract

Yayasan Pendidikan Musik Music School in Jakarta has been operating for years without a performance measurement system for its employees, which makes it difficult to improve service quality and efficiency, as well as the effectiveness of the activities carried out. This study aims to design and implement a performance measurement system for music teachers using the 360-degree feedback method. This method is used to provide an objective and comprehensive assessment of performance. Performance criteria are evaluated through a literature review that is tailored to the duties, responsibilities, and job descriptions of the teachers, and then weighted using Pairwise Comparison. The performance measurement tool is implemented in the evaluation of three teachers, assessed by superiors, colleagues, students or parents, and themselves. The assessment results are then analyzed to identify areas for improvement. The results of this study show that all teachers received an average final score of 4, indicating good performance.
Enhancing customer satisfaction towards the service quality of Soekarno-Hatta International Airport using servqual and binary logistic regression Graciela, Felice; Satitidjati Dewayana, Triwulandari; Habyba, Anik Nur
OPSI Vol 17 No 2 (2024): ISSN 1693-2102
Publisher : Jurusan Teknik Industri, Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v17i2.11930

Abstract

The world is experiencing rapid change, leading to transformations in human lifestyles that necessitate adaptation. However, the aviation industry appears to have reached a point of stagnation. Soekarno-Hatta International Airport must adapt to the new needs and demands of passengers by implementing necessary changes and incorporating the latest available technologies. To gain a deeper understanding of passenger satisfaction regarding the service quality at Soekarno-Hatta International Airport, the SERVQUAL method and Binary Logistic Regression Analysis will be employed. Both methods aim to identify services that has significant impact and determine the relative influence of these services on the overall service quality at Soekarno-Hatta International Airport. The results of the SERVQUAL method in this study indicate that there are 14 services at Soekarno-Hatta International Airport that do not meet passenger satisfaction standards, with a need for particular attention to the reliability dimension. Subsequently, the Binary Logistic Regression analysis results indicate that only parking price and ambiance significantly influence passenger satisfaction, with the likelihood of increasing satisfaction being 1.7732783 and 2.0773711 times respectively. Focus should be placed on improving operational accuracy through stringent Standard Operating Procedures (SOPs) and comprehensive staff training, reducing supplementary expenses like toll charges, expanding parking facilities, and optimizing parking flow, improving illumination, customer engagement, and noise control measures. 
Co-Authors Dewi, Amelia Miranti Didien Suhardini Graciela, Felice Habyba, Anik Nur Santosa, Wahyuningsih Widiaswara, Ardhia