• ETRI Journal
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• v.24 no.1
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• pp.43-55
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• 2002

This paper proposes a flow-based admission control algorithm through an Asynchronous Transfer Mode (ATM) based Multi-Protocol Label Switching (MPLS) network for multiple service class environments of Integrated Service (IntServ) and Differentiated Service (DiffServ). We propose the Integrated Packet Scheduler to accommodate IntServ and Best Effort traffic through the DiffServ-aware MPLS core network. The numerical results of the proposed algorithm achieve reliable delay-bounded Quality of Service (QoS) performance and reduce the blocking probability of high priority service in the DiffServ model. We show the performance behaviors of IntServ traffic negotiated by end users when their packets are delivered through the DiffServ-aware MPLS core network. We also show that ATM shortcut connections are well tuned with guaranteed QoS service. We validate the proposed method by numerical analysis of its performance in such areas as throughput, end-to-end delay and path utilization.

• ETRI Journal
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• v.36 no.6
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• pp.1041-1050
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• 2014

As the Internet Protocol TV (IPTV) service enters the broadcasting market, the competition intensifies. This paper explains the factors influencing new media subscription and their influential differences on IPTV and digital cable TV (DCTV). We use the information systems success model and gratification opportunity theory to develop our research model. We sample 621 people and collect their responses through web-based measuring software. Structural model analysis shows that the willingness to subscribe to a new broadcasting medium is influenced by three characteristics of the medium: media richness, interactivity, and video quality. Multigroup analysis reveals that motivation to use a medium partially differs between IPTV and DCTV. This research concludes that the IPTV service is not attractive enough to act as a substitute for the already existing DCTV. In addition, for the IPTV service to proliferate, its business model should be promoted with new and differentiated revenue structures and services. The managerial implications in this study help new media businesses set business goals and product functionality, and allocate resources for the continued diffusion of IPTV.

• Journal of Distribution Science
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• v.17 no.5
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• pp.29-37
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• 2019

Purpose - This paper analyzes the effects of the SST characteristics at airports on behavioral intention through technology acceptance and customer satisfaction, and presents a strategic plan for introducing SSTs to airports providing differentiated services. Research design, data, and methodology - We examine the role of airport self-service characteristics and access the influence of the Technology Acceptance Model (TAM) on both customer satisfaction and behavioral intentions towards SSTs. To do this, a survey is conducted with passengers having used self-service technologies(SSTs) at Incheon International Airport. A total of 400 questionnaires are then analyzed using structural equation modeling. Results - According to the results, of the self-service characteristics, customer satisfaction and behavioral intention were affected by optimism through perceived ease of use, perceived usefulness, and perceived enjoyment and by innovativeness and insecurity through perceived ease of use. Conclusions - According to the results of the study, the purpose of using TBSS in the airport is to save time and convenience. Therefore, it is necessary to closely analyze the differences in technology acceptance by age and generation, increase user self-efficacy, increasing satisfaction through effective management of cognitive and emotional waiting time will have a positive impact on behavioral intentions.

• Journal of Industrial Convergence
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• v.13 no.2
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• pp.25-37
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• 2015

The purpose of this study is about the influence of the Service quality on the customer loyalty depending on the customer value(social and psychological value, functional value) because of the dynamic business environment is react quickly and flexibly, many of today's companies are required to consult an expert. According to the circumstances, Service Firms(Hotel) should be provide a differentiated service for each customer. And this paper attempt to theoretical organize and take advantage of practical in Service industry. The questionaries of 154 from the companies which have received Service in 3 years in the metropolis and small and medium-sized cities were used to test hierarchical regression model with mediating effects of customer value between Service quality and Customer loyalty by SPSS(PASW) 18.0 version. From these analyses, the following results were obtained: First, social-psychological value have partially mediated effect on the tangibility, responsibility, assurance and customer loyalty. Second, functional value have partially mediated effects on the between tangibles, reliability and customer loyalty. The result suggests that 'tangibility', 'reliability', 'responsibility', 'assurance', 'empathy' are the most important factors to affect customer loyalty, and there are partially mediated effects of customer intention between Service quality and Customer loyalty. In conclusion, to improve the specific and actual meaning and value about the Hotel service quality and to give the suggestions on the Hotel's marketing communication by understanding the customer action.

• The KIPS Transactions:PartC
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• v.11C no.6 s.95
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• pp.807-814
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• 2004

This paper researches and evaluates a bandwidth reallocation mechanism for efficient DiffServ QoS support in MPLS networks by monitoring the network traffic status and reallocating unused bandwidth. While the Differentiated Services in MPLS Networks architecture provides QoS management through the RSVP resource reservation, this mechanism is based on a static provisioning of resource. But this approach can lead to waste bandwidth in some service classes or, leave some service classes' resource starved. This paper presents the bandwidth reallocation dynamically based on network traffic status for bandwidth usage maximization.

• Journal of the Korea Safety Management & Science
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• v.11 no.2
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• pp.187-195
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• 2009

Various kinds of service measurement including the development of the measurement of service quality have been developed. Especially the mobile telecommunication service being represented by the mobile communication company would be the mostly developed area. Its service development can be understood along with the development of the telecommunication companies as well as cellular companies. It is a differentiated phenomenon in the current research, such as the organic influence between the service quality and product. Of course there are such products placed on sale and enjoyed the common service, but at present there is another case that the product is on the market exclusively with the mobile company in here. This article is to estimate service efficiency for Mobile Communication and Cellular company. In this paper, We tried to measure the service quality and overall satisfaction by using Data Envelopment Analysis(DEA), degree of combination and top2box which is a little bit different methodology from traditional ones. This paper uses CCR model in DEA to measure service efficiency in the Mobile Communication.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38B no.10
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• pp.817-823
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• 2013

This paper examined the performance of differentiated services applied to each different traffic. For this purpose, we used three traffics which have a different quality of service and generate packets from a specific source to destination. To allocate a proper code point according to QoS, a common policy which is the simple policy model of time sliding window with 3 color marking (TSW3CM) was established to each traffic. To evaluate the performance, we investigate and compare code points to each traffic. Simulation results using NS-2 showed that the code points 10, 11, and 12 can be differently allocated to each traffic according to its sending rates 1Mbps, 2.5Mbps, and 4Mbps.

• Proceedings of the Korean Information Science Society Conference
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• 2000.04a
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• pp.274-276
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• 2000

IP 망에서 서비스 품질을 제공하기 위한 기술로 RSVP 신호 프로토콜을 사용하는 종합 서비스 모델(Integrated Service Model)과 차등화 서비스(Differentiated Service)가 있다. 그러나, RSVP는 플로우별로 상태를 유지하고, 처리하기 때문에 거대한 네트워크에서는 확장성 문제가 고려되어야 한다. 반대로, 차등화 서비스는 클래스별로 처리하기 때문에 확장성 문제를 해결할 수 있지만, 완전한 형태의 서비스 품질을 보장하지 못한다는 단점을 가지고 있다. 본 논문에서는 RSVP의 장점과 차등화 서비스의 장점을 상호 결합하기 위한 통합 모델을 살펴보고, 경계 라우터의 각 모듈과 기능을 정의하였다. 또한, 차등화 서비스 영역에서 자원 예약 메시지를 최우선 서비스로 처리함으로써 동적인 자원 예약 프로토콜의 단점을 보완 하도록 하였다. 경계 라우터는 RSVP 메시지를 처리하는 RSVP 처리 모듈, RSVP의 자원 요청에 대응하는 차등화 서비스 클래스를 결정하는 서비스 매핑 처리 모듈, 마지막으로 패킷 우선순위에 따라 차별화된 서비스를 제공하는 차등화 서비스 처리 모듈로 구성되어 있다. 본 논문에서 제안한 자원 예약 메시지의 우선 처리 방법과 경계 라우터의 설계는 향후 IP 네트워크에서 쉽게 적용하고, 확장될 수 있으리라 사료된다.

• Culinary science and hospitality research
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• v.23 no.7
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• pp.97-111
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• 2017

As a single-person household emerges as an important consumer group, an Online-to-Offline or Offlineto-Online(O2O) service market is rapidly growing. This study attempted to verify the effects of convenience and webrooming characteristics of O2O service using the Technology Acceptance Model (TAM). The purpose of this study was to investigate the effects of the convenience and webrooming of food O2O service on users' perceived ease of use and perceived usefulness, and the effects of perceived ease of use and perceived usefulness on purchase intention of O2O services. Using a convenience sampling technique, an online survey was conducted through Google survey from April 16 to April 30, 2017 and was distributed to 447 O2O service users. A total of 320 questionnaires were included in the final analysis. The results showed that convenience had a significant effect on users' perceived ease of use as well as perceived usefulness. In addition, users' perceived ease of use had a significant impact on users' perceived usefulness. Finally, both perceived ease of use and perceived usefulness positively affected users' purchase intention of O2O services. These findings suggest that differentiated events, promotions, and store information should be provided when launching O2O service because webrooming is a more important factor in enhancing perceived usefulness than the perceived ease of use.

• The Korean Journal of Franchise Management
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• v.11 no.4
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• pp.17-29
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• 2020

Purpose: As the untact culture has spread due to the recent COVID-19, the service industry as well as the beauty salon is shrinking. In order to overcome such a crisis in beauty salons, the lower dimension of beauty salon service quality is divided into servicescape, technical service, and employee service, and actions are taken with the 'perceived value of the customer' as a parameter. In this study, S-O-R(Stimulus-Organism-Response) theory was applied for customer-centered analysis, and gender and regularity were selected as moderator variables to add practical implications. Research design, data, and methodology: All constructs were measured using items developed and used in the previous study. A total of 261 questionnaires were collected online using NaverForm. The data were analyzed using factor analysis, correlation analysis, and measurement model analysis with SPSS 22.0 and AMOS 22.0. After testing the research model and hypothesis for the entire group, a multi-group analysis was conducted by dividing into male and female groups, regular customers, and non-regular customers. Results: First, this study showed that the service environment of beauty salon customers had a negative (-) effect on perceived utilitarian value, and the technical service and perceived hedonic value had a positive (+) effect on the customer's behavioral intention. Technical service and employee service had a positive (+) effect on perceived hedonic value, but perceived hedonic value did not affect customer's behavioral intention. Second, there is no statistically significant difference in each path between male and female groups. Third, there was a statistically significant difference between regular customers and non-regular customers, only the path that the servicescape influences the perceived hedonic value. Conclusion: According to the results of this study, technical service and utilitarian value should be considered in order to induce behavioral intention of customers, and technical service quality should be considered first. Also, operating a beauty salon requires a differentiated approach to the salon servicescape according to the ratio of non-regular and regular customers. The beauty salon servicescape generally showed negative practical value for non-regular customers, but positive for the Hedinic value for servicescape such as comfortable service and clean interior for regular customers.