Articles

Quality Improvement to Enhance Customer Satisfaction Using Lean Six Sigma (Case Study: XYZ Restaurant)

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Bandung was designated as a national culinary destination city in 2017 by the Ministry of Tourism due to its culinary diversity. The development of food and beverage businesses in Bandung, which increased from 524 in 2020 to 729 in 2021[4], shows that competition in the culinary business is quite intense. XYZ is one of the restaurants that can survive during the Covid-19 pandemic. However, XYZ often experiences complaints from customers regarding the quality of its products and services. Usually, this restaurant can receive 200-300 customers on weekdays and 400-600 customers on weekends. But until now, XYZ only receives 50% of its customers. This research will discuss the improvement of product and service quality using the DMAIC Lean Six Sigma methodology. The research uses primary data by distributing questionnaires to XYZ customers who visited in 2021 to 2023. From the results of the questionnaire, 4 out of 19 sub-variables customers feel that the performance is not good but has a high importance, namely in T1 (Taste), TX1 (Texture), E1 (Empathy), and R1 (Reliability). These four indicators need to be improved so that customers feel satisfied with the services and products provided by XYZ. Based on the main problems from the data obtained, quality improvement efforts that can be made such as employee training and quality control at suppliers. These efforts aim to improve and maintain the quality of XYZ for the long term so that an increase in the number of customers can be achieved, such as 200-300 visitors on weekdays and 400-600 on weekends.

Proposed Design of Service Quality Performance Management System for Indonesian HSR

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In some countries, the development of High-Speed Railway (HSR) represents a significant technological advancement which helps modern society’s value of time and various activities. Despite of having complex operational support and significant financial outlays, studies have shown that HSR sector has several growth barriers due to poor punctuality, reliability, pricing, and inconvenient passenger journeys. These brought specific impact on deciding factors whether or not passengers choose the transport option as it affected passenger satisfaction level. Recognizing the global challenge, this paper anticipates the impending Indonesian HSR operation by observing passengers’ relevant service quality attributes. The findings served as the performance management design’s foundation. In order to assist HSR operators to improve passenger experience and satisfaction, this study aims to identify the relevant service quality of Indonesian HSR potential passengers as one of many solutions to eliminate lack of demand problem. Qualitative and quantitative data analysis from in-depth interviews with several Indonesian railway expert and information from prior publication of Asian HSR which was used to carry out external benchmarking, validate results, support design process, and create contextual performance indicators for attributes using Knowledge-Based Performance Management System (KBPMS). This paper produced numbers of service quality performance indicators whose prioritization was arranged in specific order. Five variables are used to measure tangibility attributes’ performance, whereas six variables are used to measure reliability attributes’ performance. Tangibility and reliability were chosen based on Indonesian railway market preference and common success factor of HSR best practices. This performance indicators were specifically developed based on these attributes’ sub-attributes which has been contextualized. In contrast to other countries, Indonesian HSR place a distinctive value on physical facilities as it affects travelling motivation. These new insights would direct Indonesian HSR operators to develop targeted solutions to increase passenger satisfaction and economic benefits.