• Journal of Korea Port Economic Association
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• v.28 no.1
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• pp.203-227
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• 2012

Based on the review of the existing studies, this study built the conceptual framework describing the structural relationships among port service quality dimensions(port internal service quality, external service quality, interaction quality), customer satisfaction, customer trust and customer loyalty. In specific, switching barrier was included as moderator in customer satisfaction and customer loyalty relationships. The subjects are the customers who use the Busan New Port. A survey using 317 customers was conducted, Confirmatory factor analysis was conducted to test the validity of the measurement model, and AMOS analysis approach was used to gain important insights into how customer retention in the port business can be ensured. Results in this paper indicate that customer trust and satisfaction are identified as antecedents of the port service quality dimensions. Customer satisfaction positively influences trust. Customer trust and satisfaction positively influence loyalty. Switching barrier positively moderates the relationship of customer satisfaction and customer loyalty. Finally, this study suggests that the implications of these findings and offers directions for future research.

• Journal of Scientific & Technological Knowledge Infrastructure
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• s.7
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• pp.128-133
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• 2001

본 논문에서는 DiffServ망의 EF PHB를 이용해 구현한 프리미엄 서비스를 UDP및 TCP 플로우에 적용하였을 때 나타나는 특성을 측정 및 분석함으로써, DiffServ망을 이용하여 고품질의 서비스를 제공받고자 하는 서비스 사용자에게 미치는 영향을 제시하였다.

• Journal of Korea Society of Industrial Information Systems
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• v.23 no.6
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• pp.113-123
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• 2018

There are no studies related to the cryptocurrency exchange, unlike the explosive topic and the active transaction of the cryptourrency around the world. In this study, variables were constructed based on the previous researches to examine the effects of e-service qualities(information quality, transaction quality, design quality, safety quality), satisfaction and continuance intention of cryptocurrency exchange. The samples consist of 180 survey data drawn from the users of cryptocurrency exchange. The collected data were analyzed by SPSS 24.0 and AMOS 21.0. According to results of the reliability and validity test, all were found reliable, and all items were included. As a result of hypothesis testing through path analysis, First, the e-service qualities (information quality, transaction quality, design quality, safety quality) of the cryptocurrency exchange showed positive effects on satisfaction at the significance level of 1% and 5%. Second, e-service qualities (information quality, transaction quality, design quality, safety quality) of the cryptocurrency exchange were found to have positive effects on continuance intention at the significance level of 1% and 5%. Third, the satisfaction of the cryptocurrency exchange has a positive effect on continuance intention at 1% level of significance.

• Journal of Digital Convergence
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• v.14 no.10
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• pp.129-136
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• 2016

This study aims to explore the influence of the social support services that have an effect on the organizational commitment and service quality of the labors working in the convergence service industry. Data for this study were collected from 233 labors working in the convergence service industry;20 smaller businesses located in Seoul and the metropolitan area. Structural equation modeling analysis method was performed for analyzing key data. As a study result, support of seniors and colleague, which is regarded as the variable of social support, had a significant positive effect on organizational commitment of the labors working in the convergence service industry. It also had a significant positive effect on the service quality that organizational commitment went through the support of the seniors and colleagues. I discussed theoretical and empirical implications with these findings and described the future research.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.572-575
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• 2009

With the advent of integration environment of broadcasting and communication, IPTV has been widely used. It provides services such as information, movie contents and broadcasting through TV using super-high speed networks. Developments of Wireless LAN and IP network technology create various and fusional services such as IPTV, VoIP that are based on IP network. The development of Wireless LAN is very important in IPTV network field which requires the best quality of service on the security, QoS and bandwidth. In this Paper, We configure the experimental network in its RIP and OSPF environment to test the Video Quality of IPTV in Wireless LAN. We measure and evaluate broadcasting quality by using PSNR to show the corelation of Routing Protocols in Wireless LAN in which how they affect to the IPTV real-time Video Quality.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.977-980
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• 2009

본 연구는 NGN QoS보증을 위해 어떤 체계 하에서 품질이 관리 되어야 하는지를 도출하기 위해서 VOIP와 멀티미디어 트래픽을 중심으로 NGN QoS 관리 프레임워크를 연구제시 한다. NGN QoS 프레임워크는 QoS 측정메트릭스, 측정구간과 측정계위, 측정도구와 측정장비, 측정방법 및 측정결과분석에 대한 일련의 프로세스와 방법론을 모델화하여 운용현장의 NGN QoS 보증활동에 적용토록 한다. 통신서비스 품질은 스스로 보장되지 않으며 끊임없이 측정되고 관리될 때에만 목표수준 확보가 가능하다. 특히 차세대통신망으로의 네트워크기술 패러다임 대 전환이 전개되고 있는 이 시기적 중요성을 감안할 때 NGN QoS 관리에 대한 연구는 앞으로 지속적으로 추진되어야할 핵심 소재이다.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.3
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• pp.309-316
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• 2016

Recently, the voice service over a mobile communication system tends to be provided based on the packet-based technology. Even though the sufficient transmission rate is supported by LTE mobile communication system, the quality of VoIP service that is experienced by the user can be degraded by the change in the transmission conditions and the terminal mobility. This paper has established an environment on which experiments are conducted for the different values of the major parameters that represent the transmission conditions. The result can contribute to the decision of the requirement that the mobile system should meet for maintaining the quality of VoIP service.

• The Journal of Society for e-Business Studies
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• v.16 no.1
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• pp.17-34
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• 2011

Because the mobile services is composed of heterogeneous attributes, it is hard to find out customer's potential needs and more difficult to analyze customer's satisfaction factors toward mobile services. Therefore, this study approached this issue from a new viewpoint and applied Kano Model in analyzing customer's satisfaction and dissatisfaction factors toward mobile services. By using Kano Model, it tried to find out how differently customers perceive the mobile services. Firstly, we found out perception gaps of Korean and American customers toward mobile services. While Korean customers perceived most mobile services as indifferent service attributes, American customers perceived them as attractive service attributes. We could find main reasons of these perception differences from different national backgrounds and adoption rates of smart phones between two countries. Secondly, based on TRI scores, we categorized subjects into four groups and named as Pioneers, Explorers, Skeptics and Laggards. And then we examined the perception differences to mobile services among four groups. We found that there were no significant perception differences among four groups.

• Culinary science and hospitality research
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• v.15 no.3
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• pp.356-372
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• 2009

The purpose of this study is to study academic tendency in the researches on the service quality of Korean restaurants by analyzing the studies related to the service quality of Korean restaurants. As a result of this study, the studies related to the service quality of Korean restaurants, included in 7 academic journals selected, are totally 26 articles. Among them, there are 14 researches targeting medium-large size Korean restaurants with more than 100 seats. In the methodological aspect, the scales, which were used most frequently in measuring the service quality of Korean restaurants, were indicated to be SERVQUAL in Parasuraman et al.(1988), DINESERV in Stevens et al.(1995) and Brady & Cronin(2001)'s scale. Also, as a result of examining the tendency of researches related to the service quality in Korean restaurants in the contextual aspect, the interaction quality between employees and customers out of customers' perceived service quality was surveyed to have greater influence upon customers' behavioral reaction than the physical quality or technical quality. Consequently, in order to conduct an institutional research through examining the service quality in Korean restaurants, understanding the customers' perceived service quality needs to be implemented preferentially with a systematically verified scale. Moreover, such researches on the service quality of Korean restaurants appear to focus on specific subjects. Thus, in order to escape from this tendency, it is necessary to explore creative research subjects and design diversely and scientifically analytical methods.

• Electronics and Telecommunications Trends
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• v.9 no.1
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• pp.1-10
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• 1994

본 고에서는 전화망에서 발생되는 여러 전송 장애 요인들이 팩시밀리 통신에서 화상에 어떤 영향을 주는지 각 파라미터에 대하여 측정하였다. 이 연구에서 선정된 주요 파라미터는 최근의 측정 결과를 바탕으로 하였다. 이러한 파라미터들은 전송 선로의 특성에 따른 감쇠 왜곡, 군지연 왜곡 등과 그 외에 임펄스성 잡음, 위상지연, 위상 히트 등이다. 이 파라미터들은 모두 팩시밀리 화상 품질에 영향을 주고 있으므로 일정 수준의 팩시밀리 품질을 유지하기 위해서는 영향을 주는 파라미터를 관리하여야 한다.