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Kyu Wan Choi 3 Articles
[English]
A Case Study on Restaurant Online Coupon Redemption Behavior of Resting Customers
Seo Ho Shin, Seo Young Shin, Kyu Wan Choi, Il Sun Yang
Korean J Community Nutr 2008;13(5):693-700.   Published online October 31, 2008
AbstractAbstract PDF
The purposes this study were to a) analyze the revisiting ratio of resting customers after issuing online coupons, b) compare the characteristics of coupon redemption customers with non-redemption customers. For this study, the customers of M restaurant who did not revisit during the last 8 months were classified as 'resting customers', totaling 4,052 customers. The online coupons, valid for 9 months, were sent via e-mail to those customers. After that, the data collected from those who redeemed the coupon in September 2006 was utilized. As a result of sending the coupon to 4,052 resting customers, 1,288 customers redeemed the coupon during the study period, showing relatively high redemption ratio (31.6%). The average check of customers with the online coupon was decreased by 22% compared with customers without the coupon, but the party size remained almost the same, 2.6 customers, and also the redemption ratio was increasing as the expiration date of the coupon was approaching. The redemption ratio of female (35.3%) was much higher than male (19.2%), representing higher redemption possibility of the female customers by issuing the coupon. The redemption ratio of the twenties (69.1%) was obviously higher than other age groups. Also, the non-redemption ratio of other groups except the twenties was higher than the redemption ratio. The redemption ratio of low-educated was higher, under college degree (58.6%), college degree (35.4%), and over college degree (16.6%). Following the result of the average visiting frequency of redemption customers during last the 8 months was 4.2, the frequency of non-redemption customers was 9.8. The total average visiting of non-redemption customer was 10.5, and that of redemption customers was 8.6. Customers who visited the restaurant less frequently in the past have higher possibility to revisit after receiving the coupon
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[English]
Personnel Scheduling of Restaurant using Integer Programming
Kyu Wan Choi
Korean J Community Nutr 2007;12(5):630-638.   Published online October 31, 2007
AbstractAbstract PDF
The purpose of this study is to investigate an efficient use of labor in personnel scheduling for the restaurant industry. More specifically, this study attends to reduce overall labor cost while not sacrificing both full-time and part-time employees' schedules. The customers' demands were measured by sales in this analysis. Historically, server scheduling in the restaurant has been practiced by manager's experience and intuition; however, those practices provided drawbacks because managers often fail to consider external factors such as a employees' working conditions and change in a restaurant's size. The result of a new method in personnel scheduling provided significant cost saving compared to a previous scheduling technique. This study found that a new method in personnel scheduling allowed the restaurant to save labor cost. The outcome of this study should offer important strategic implication for the restaurant managers.
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[English]
Efficiency Analysis of Contract-managed Business and Industry Foodservice Operations Using Data Envelopment Analysis
Kyu Wan Choi, Young Min Park, Seo Young Shin, Tong Kyung Kwak
Korean J Community Nutr 2007;12(2):178-188.   Published online April 30, 2007
AbstractAbstract PDF
This study was performed to suggest a new efficiency measurement indicator is necessary for evaluating management efficiency of food service operations in contract-managed foodservice companies, to distinguish efficient food service providers and inefficient ones by measuring comparative efficiency among food service operations, and to provide guidance for effective management through showing benchmarking targets for improving inefficient food service providers. The subjects of this study were the 93 B&I foodservice Operations of a domestic contract food service company. The analysis was conducted using CCR model in DEA model. A software, 'Frontier analyst', was used for the analysis. Based on the results derived from comparison of efficiency evaluation classified by providers with use of DEA, it was possible to identify efficient food providers and inefficient providers, and subsequently provide benchmarking guidelines for improvement of the inefficient groups. In analyzing the differences between the results of DEA efficiency evaluation by detailed operation status of food service providers, there was significant difference of efficiency outcomes in terms of contract types, while there was no significant difference in terms of business condition.
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