• Proceedings of the Safety Management and Science Conference
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• 2007.04a
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• pp.105-111
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• 2007

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.695-698
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• 2008

오늘날 시장환경이 급변하고 다양한 비즈니스 요구에 부응하기 위해 IT Outsourcing 전략을 채택하고 있는 기업들이 증가하고 있다. 기업의 전반적 비용 효율성에 대한 인식이 증대하고 안정적 IT 서비스 지원을 통한 비즈니스의 연속성의 중요성을 인식한 기업들이 IT Outsourcing을 도입함으로써 국내 IT 서비스 시장은 꾸준한 성장세를 보이고 있다. 그러나 기존의 IT 서비스 제공 프로세스가 체계적이지 못하고 성과측정에 대한 표준안이 제대로 갖춰지지 못하여 고객기업들의 불만이 높아지고 있다. 이에 IT 서비스 기업들은 보다 고품질의 IT 서비스 제공하기 위해 Best Practice 기반의 ITIL을 이용한 ITSM 시스템 구축에 심혈을 기울이고 있다. 이에 국내 ITSM 시스템이 도입 초기 단계부터 선도적으로 구축한 I 사의 실제 구축사례를 소개하고 ITSM 시스템을 여러 다양한 기업에 적용하여 성과관리지표를 측정하여 ITSM 시스템 도입 기대효과의 실질적인 지침을 마련하고자 한다.

• Convergence Security Journal
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• v.15 no.5
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• pp.29-35
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• 2015

The network security encryption type is divided into two, one is point-to-point, second method is link type. The level of security quality attributes are a system security quality requirements in a networked environment. Quality attributes can be observed and should be able to be measured. If the quality requirements can be presented as exact figures, quality requirements are defined specifically setting quality objectives. Functional requirements in the quality attribute is a requirement for a service function which can be obtained through the encryption. Non-functional requirements are requirements of the service quality that can be obtained through the encryption. Encryption quality evaluation system proposed in this study is to derive functional requirements and non-functional requirements 2 groups. Of the calculating measure of the evaluation index in the same category, the associated indication of the quality measure of each surface should be created. The quality matrix uses 2-factor analysis of the evaluation for the associated surface quality measurements. The quality requirements are calculated based on two different functional requirements and non-functional requirements. The results are calculated by analyzing the trend of the average value assessment. When used this way, it is possible to configure the network security encryption based on quality management.

• Journal of the Korean Applied Science and Technology
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• v.36 no.1
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• pp.90-101
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• 2019

The study wanted to compare the use status of general beauty salons and men's hair salons for male customers managed by male practitioners and to check the impact of service quality awareness on satisfaction and loyalty. A total of 405 people were used as analysis materials. Principle Component Analysis was used to verify the reliability and validity of the measurement tool. Sub-factors of service quality recognition have derived expertise, affinity, reliability and persistence. The validity and reliability of satisfaction and loyalty were verified. Based on the results of this study, the differences in hair involvement in general beauty salons and men's specialty salons, service quality awareness, satisfaction and loyalty were identified. The relationship between professionalism, affinity, reliability, persistence by sub-factor of service quality awareness has been identified with satisfaction, loyalty and statistically significant positive (+). In addition, male professional beauty salons had positive effects on service quality awareness of satisfaction and loyalty. Service quality satisfaction has been confirmed to have a positive impact on loyalty. In this study, the beauty of the men through the significant marketing potential use as basic data on the market feed that the portraits.

• Journal of Broadcast Engineering
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• v.13 no.2
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• pp.179-187
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• 2008

In this paper, we proposed the qualify metric based on SVC and the subjective quality. The proposed quality metric is for a general purpose. It means we can use it for any video sequences regardless of its temporal and spatial characteristics. The Quality of Service(QoS) is one of the important issues in heterogeneous environment which has diverse restrictions such as limited network bandwidth and limited display resolution. Scalable Video Coding(SVC) is the efficient video coding skill in heterogeneous environment. Because SVC can be adapted to various quality bitstreams using three scalabilities(spatial, temporal, and SNR) from one bitstream which has full scalability. To maximize the QoS in this environment, we should consider the subjective quality which is the viewer response. And also we should consider temporal and spatial characteristics of video sequence because the subjective quality is affected by temporal and spatial characteristics of video sequence. To verify the efficiency of the proposed method, we perform subjective assessments. The experimental results show that the proposed method has high correlation with subjective quality. The proposed method can be a decision tool of SVC birstream extraction.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.7
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• pp.1609-1617
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• 2013

TFRC(TCP-Friendly Rate Control) has a performance degradation in wireless networks because it performs congestion control by judging all the losses occurred in wireless networks as a congestion indicator. It is also degraded by the increased Round Trip Time(RTT) due to packet retransmission and contention overhead in the link layer. In this paper, we propose an adaptive rate control scheme based on cross-layer to improve the quality of streaming services in the wireless networks. It provides new RTT estimation and loss discrimination methods to improve transmission rate of TFRC. The simulation results show that the proposed scheme can improve the performance of TFRC.

• Journal of the Korea Society of Computer and Information
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• v.13 no.6
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• pp.301-314
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• 2008

The purpose of this study is to examine the effect of information service quality on user satisfaction and individual performance in Outbound Callcenter. A survey was conducted and data were collected from 330 respondents of 1 company which adopted CMS. Validity and reliability of the research instrument were tested and research hypotheses were examined using PLS Graph 3.0. As a result of data analysis, 6 out of 8 hypotheses were supported. User satisfaction is significantly influenced by information quality factors such as accuracy, currency, and relevancy. 2) Also, User satisfaction is significantly affected by internal service quality factors such as training support and reward system. 3) Individual performance is significantly influenced by user satisfaction. Implications of these findings are discussed for researchers and practitioners.

• Journal of Navigation and Port Research
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• v.40 no.4
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• pp.223-230
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• 2016

While marine transport freight is steadily increasing, people are more interested in terminals handling cargo. But the domestic researches on terminals were almost on container terminal. This study attempted to study the service quality for bulk terminals. The users of bulk terminal services were divided into shipowners and shippers to compare their differences by using bulk terminal service provided. During the attributions proposed in this study, Tangibles were descripted by the numbers of berth or depth, facilities, and so on. So it was suitable to consider the tangibles by formative indicators. And also this study has tried using "reflective model" and "formative model" to make a measurement model for comprehensive analyses. The results showed that all of the items were significant except the relation between empathy and performance satisfaction in the overall measurement model analyses. User groups difference analyses results have showed that the trust responsiveness impact on performance satisfaction was more importantly assessed by shippers than by shipowners. It was expected to use the results of this study as a good strategic resource to help bulk terminal administrators make various expansion plans to improve the bulk terminal's competitiveness in the future.

• Proceedings of the Korean DIstribution Association Conference
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• 2005.02a
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• pp.125-158
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• 2005

This study tried to identify major factors which determine repurchase intentions. We consider customer satisfaction, service quality, switching cost and consumption emotions which are recently proposed in the related literatures. To test them empirically, we collected 374 questionnaires among 620 from corporate customers of major banks and 112 from employees of a major bank in corporate banking and analyzed them by LISREL 8.12.. The result of this study can be summed up as follows. First the most important determinant factor in repurchase intentions is customer satisfaction. Second, it is desirable to measure service quality not only in terms of 'process service quality', a process of service delivery to customers, but also 'outcome service quality', what customers receive from services or from service providers. Third, positive consumption emotions have positive influence upon customer satisfaction, negative consumption emotions have negative influence upon customer satisfaction and repurchase intentions. Fourth, switching cost, even though small in its influence, has been proved to be antecedent in repurchase intentions along with customer satisfaction and negative consumption emotions. As precedents in customers' repurchase intentions, customer satisfaction and process service quality are revealed to exercise the biggest influences. Also, positive consumption emotions, negative consumption emotions, outcome service quality and switching cost can be used as determinants in predicting corporate customers' repurchase intentions.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10c
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• pp.118-120
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• 2004

차세대 네트워크 인프라에서 높은 대역폭을 필요로 하는 어플리케이션의 품질 보장에 대한 요구가 증가함에 따라, 네트워크의 성능을 측정하고 분석하여 특정 네트워크 지역의 병목현상이나 네트워크 장애에 대해 사전에 대비하도록 하는 장기적, 주기적으로 성능을 측정하는 인프라에 대한 필요성이 대두되고 있다. 우리는 본 논문에서, 기가급의 대역폭을 서비스를 제공하는 차세대 네트워크인 연구망의 성능을 사용자 입장에서 측정할 수 있는 인프라를 제안한다.