• KIPS Transactions on Software and Data Engineering
• /
• v.4 no.4
• /
• pp.161-168
• /
• 2015

It is difficult to provide proper cloud services for cloud users, because the number of cloud services are increasing and the type of cloud services are diversifying. To overcome this problem, the concept of cloud service broker is presented to mediate cloud services between cloud providers and tenant. The most important role of cloud service broker is to finding cloud services that fulfill requirements of tenant. However, current existing cloud service broker conduct passive requirements analysis process with cloud service expert's assistance. In addition, the systematic functional and non-functional requirement analysis is insufficient. Therefore, we need the new methods for requirement analysis to find nearest service that matches with requirement of tenant. In this paper, we apply pairwise comparison from AHP method to analyze requirement automatically and systematically. It calculates score of service by comparing requirement with service specification, calculating importance rate, and so on.

• Journal of the Korean Applied Science and Technology
• /
• v.40 no.6
• /
• pp.1213-1224
• /
• 2023

The purpose of this study was to analyze the mediating role of self-efficacy in the relationship between the behavioral routines of beauty service workers on service performance and work performance. The subjects of the study were 311 beauty consumers in Seoul and Gyeonggi, and data were collected and analyzed using a structured questionnaire. For data analysis, descriptive statistics, confirmatory factor analysis(CFA), correlation analysis, structural equation model analysis(SEM), and mediating effect analysis using bootstrapping techniques were conducted. The conclusions drawn through a series of research procedures are as follows. First, the behavioral routines of beauty service workers were found to have a statistically significant positive(+) effect on self-efficacy, service performance, and work performance. Second, the self-efficacy of beauty service workers was found to have a statistically significant positive (+) effect on service performance and work performance. Third, the partial mediating effect of self-efficacy was shown in the relationship between beauty service workers' behavioral routines, service performance, and work performance.

• Journal of Information Technology Services
• /
• v.15 no.2
• /
• pp.51-63
• /
• 2016

In this study, we conducted a comparative analysis of R&D investment efficiency and operational efficiency of IT firms using Data Envelopment Analysis (DEA). We categorized thirteen sample firms into two groups-IT manufacturing and IT service-after an extensive literature review on IT industry classification. We adopted an output-oriented two-stage DEA model suggested by Banker et al. (1984) with total asset and R&D investment as input variables. Then, we constructed investment efficiency and operational efficiency by using Return on Equity (ROE) and Return on Asset (ROA) as intervening variables and operating income and Earnings Per Share (EPS) as output variables. The outcome of the analysis is summarized as follows. First of all, IT manufacturing firms were more efficient (57% on average) than IT service firms. To be specific, IT service firms showed decreasing returns to scale (DRS) with diseconomy of scale. In contrast, IT service firms showed higher operational efficiency (81.5% on average) than IT manufacturing firms. Also, we conducted a Mann-Whitney U test to compare the output of IT service firms and IT manufacturing firms. Lastly, we found a negative correlation ($R^2$ = -.754) between R&D investment efficiency and operational efficiency which infers the trade-off between two constructs

• Journal of the Korean Operations Research and Management Science Society
• /
• v.27 no.3
• /
• pp.115-133
• /
• 2002

In this paper, 15 South Korean telecommunications service failure cases were analyzed. Through the in-depth case study, 8 factors were found to be the major causes contributing to the telecommunications service failure. They were (1) ineffective marketing, (2) poor demand forecasting due to misjudgment of customer preference, (3) failure to satisfy technical specifications, (4) loss of cost advantage due to the price cut of competing services or new entry with lower price, (5) loss of utility advantage due to the increased utility of competing services or new entry with higher utility (6) decrease of market attractiveness due to change of customer preference, (7) impact of government policy, and (8) insufficient or low quality of contents. Additional analysis was done to derive managerial implications to the new telecommunications service development strategy. The findings from the paper will provide valuable Insight to the successful Implementation of new service development and service provisioning processes.

• Journal of the Korean housing association
• /
• v.18 no.5
• /
• pp.143-150
• /
• 2007

The purpose of this research is to example the general trend of the service environment evaluation of the silver town and classify based on the service environment evaluation to suggest a effective method and alternatives fur development companies. The survey population of this study focused on 40s and 50s' middle aged both genders living in the Seoul and national capital region, we used random sampling method. The analytical methods used in this study were frequency, mean, standard deviation, factor analysis, Chi-Squae analysis, ANOVA, cluster Analysis, post-hoc estimation (Duncan test), To verify the reliability of each measure, Cronbach's alpha coefficient was used. As a result of classifying the environment evaluation elements, it was classified into 5 groups for the differentiating strategy on each group. The groups are: life support service type, medical and health support service type, cultural support service type, indifference type, and food support service type.

• Journal of Korean Society for Quality Management
• /
• v.41 no.4
• /
• pp.527-539
• /
• 2013

Purpose: Methods for increasing health-care service quality are considered for a women-centered hospital located on a local city. A walk-through audit is applied to uncover areas for improvement. Methods: A survey questionnaire with 25 questions is constructed based on a service blueprint for a walk-through audit, and a survey is conducted both to patients and service providers to assess a health-care service quality. Frequency analysis, statistical tests and customer-provider analysis are used to analyze surveyed data. Results: According to customer-provider analysis, 6 attributes belong to 'problem unawareness' zone in which they are rated high by service providers but low by patients, and another 6 attributes belong to 'problem awareness' zone in which they are rated low by both groups. These attributes are considered to be improved with priority. Conclusion: Both patient group and service provider group have lots of different perceptions on most attributes that are examined, and the hospital to be studied is, in general, competitive in technical quality and less competitive in functional quality.

• Journal of the Korean Society for information Management
• /
• v.19 no.3
• /
• pp.237-261
• /
• 2002

The purpose of this study is to measure the library online service quality based on the expectation and the service performance from the users' point of view. The online questionnaire was developed based on SERVQUAL, however information quality dimension was added on it, and the survey was conducted within a research library. The factor analysis for effecting library online services showed that 5 service dimensions were loaded discretely, and information quality was put in the other dimension. The IPA (Important Performance Analysis) result confirmed that information quality, service reliability, and service assurance were considered as important factors : multiple regression analysis revealed that tangibility and information quality were the most significant dimension for the library online service.

• Journal of Distribution Science
• /
• v.18 no.8
• /
• pp.89-102
• /
• 2020

Purpose: Our purpose in this study is to compare the SERVQUAL, SERVPERF, and non-difference score measures and to find out which one is better for measuring the service quality of the multiplex cinema service. We also aim to analyze the structural relationships between service quality, customer satisfaction and customer loyalty. Methodology: For the study, we collected data from respondents who have used the multiplex cinema services and conducted an empirical test. SPSS 18.0 was used for descriptive frequency analysis, reliability analysis, and multiple regression analysis, AMOS 18.0 was used for structural equation modeling analysis of causal relationships among variables introduced in research hypotheses. Results: The main results of this study are as follows. First, we found that the non-difference score measure provided a much better model than did other service-measuring models (SERVQUAL, SERVPERF) in Korean and Chinese multiplex cinema. Second, two service-quality factors (Korea-tangibles and assurance vs. China-tangibles and empathy) between the multiplex cinema service quality factors significantly influenced customer satisfaction, which had a significant effect on customer loyalty in Korean and Chinese multiplex cinema. Conclusions: Based on the results, the authors discuss the implications and limitations of this study and future research directions at the end of the paper.

• Journal of Korean Institute of Industrial Engineers
• /
• v.41 no.5
• /
• pp.499-510
• /
• 2015

The purpose of this research is to identify new service opportunities for enhancing driving safety of intra-city buses based on driving behavior analysis. Service opportunity identification involves finding target customers of service (to whom), motivations for service (why), service contents (what), and service delivery process (when, where). This paper presents an analysis of driving behaviors using the operational data of intra-city buses in conjunction with traffic accident data and drivers' driving history data. This paper also presents four identified service opportunities based on the data analysis results. This research would contribute to enhancing driving safety of intra-city buses in Korea and serve as a basis for developing new services for driving safety enhancement.

• Asian Journal of Business Environment
• /
• v.5 no.4
• /
• pp.47-57
• /
• 2015

Purpose - The purpose of this study is to analyze franchise coffee shop service quality factors based on pilot research. In the proposed analysis, store atmosphere is added as one of the service quality factors. We aim to examine how franchise coffee shop service quality and store atmosphere influence customer satisfaction and loyalty. Research design, data, and methodology - Data was collected from 482 Korean coffee shop franchises and analyzed using frequency analysis, reliability/validity assessments, correlation analysis, and regression analysis with the software program SPSS 19.0. Results - The results are as follows. First, taste is revealed to be the most influential factor among components that have an impact on service quality. Second, taste also turned out to have the most impact on service quality among components influencing customer loyalty. Last, customer satisfaction affected customer loyalty. Conclusions - This study's findings show that taste was the most influential factor on service quality. The conclusion here is that most of the coffee shop customers are very familiar with coffee taste and this is influencing their loyalty.