• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제16권11호
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• pp.1076-1080
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• 2010

EPC(Electronic Product Code) 기반의 물류정보 네트워크인 EPCglobal 네트워크는 다수 기업이 유기적으로 결합하여 이루어지는 개방형으로 발전하고 있다. EPC-global 네트워크에서는 물류정보가 분산되어 있고, 그 양이 방대하기 때문에 효과적으로 정보를 관리하기 위한 노력이 요구된다. EPCglobal에서는 세계적인 연구소 및 업체들이 모여 RFID/EPC 기반 물류 네트워크에서의 EPC Information Service(EPCIS), Object Naming Service(ONS) 등의 구조에 대한 표준을 정의하고 관련 표준에 대한 연구를 계속하고 있다. 본 논문에서는 EPCIS와 EPC Discovery Service(EPCDS)에 대해 표준에서 요구하는 기능과 역할을 충족시키고, 나아가 더욱 효율적인 물류정보 관리를 위해 확장된 기능의 EPCIS와 EPCDS를 제안한다.

• International Journal of Advanced Culture Technology
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• 제10권1호
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• pp.310-316
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• 2022

The smart tourism service provides services such as travel planning and tour guides to tourists using key technologies of the 4th industrial revolution, such as the Internet of Things, communication infrastructure, big data, artificial intelligence, AR/VR, and drones. We are developing smart tourism services such as recommended travel products, my travel itinerary, tourism information, and chatbots for tourists through the smart tourism app. In this paper, we develop a smart tourism service system that provides real-time location-based tourism information and weather information to tourists. The smart tourism service system consists of a smart tourism app, a smart tourism information system, and an IoT data collection device. The smart tourism information system receives weather information from the IoT data collection device installed in the tourist destination. The location-based smart tourism service is provided as a smart tourism app in the smart tourism information system according to the Beacon's UUID in the IoT data collection device. The smart tourism information system stores the Beacon's UUIDs received from tourists and provides a safe hiking service for tourists.

• Journal of Information Technology Applications and Management
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• 제25권3호
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• pp.29-41
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• 2018

The purpose of constructing university information system is for improvement in diversification and throughput of information, streamlines business processes, rapid exchange of information, sharing of information, decision-making information, and securing educational facilities. Similar to business information technology system, university information system does not have a review system for sharing and overlapping investment of information. Due to the lack of project management for outsourcing and vulnerability of system suitability, system audit is absolutely needed for the university information system. This paper especially focuses on an operational phase in the audit of university information system. Additionally, we proposed operating model and checklists of the university information system based on Management Guidelines of ITIL V3 Operational and Information System. We derived the checklists of operation audit by each domain of service strategy, service design, service transition, service operation, and continual service improvement. As the result, this study appear to have more than average satisfaction the suitability results were.

• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.35-44
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• 2022

The Internet is extremely important to accomplish numerous items, from education to businesses and entertainment. Therefore, the quality of its performance must be efficient. Nowadays, there is a lack of information available for users to choose a suitable Internet service. What information is available might be insufficient, inaccurate, or regularly updated. Accordingly, there is a need to develop an electronic system that enables users to evaluate their current Internet service subscription. Several factors are used as evaluation criteria in the system that affect users' decisions. In this paper, a prototype of a design science research project is proposed to address a few objectives. First, it can help Internet service users in Saudi Arabia to make the best decision for themselves regarding Internet services subscriptions. Second, it can assist the Saudi government to seek one of the 2030 vision goals: the digital transformation that depends on having a good Internet connection. The proposed solution is a promising one that would help Internet service users to make the best decision for themselves and choose the best Internet service that fits their needs. A qualitative method has been used to evaluate the efficiency and the utility of the proposed system prototype. The results showed the extent of participants' acceptance of the Internet Service Evaluation System.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권8호
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• pp.2783-2804
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• 2021

In the network function virtualization environment, dynamic changes in network traffic will lead to the dynamic changes of service function chain resource demand, which entails timely dynamic adjustment of service function chain resource configuration. At present, most researches solve this problem through virtual network function migration and link rerouting, and there exist some problems such as long service interruption time, excessive network operation cost and high penalty. This paper proposes a dynamic adjustment method of service function chain resource configuration for the dynamic changes of network traffic. First, a dynamic adjustment request of service function chain is generated according to the prediction of network traffic. Second, a dynamic adjustment strategy of service function chain resource configuration is determined according to substrate network resources. Finally, the resource configuration of a service function chain is pre-adjusted according to the dynamic adjustment strategy. Virtual network functions combination and virtual machine reusing are fully considered in this process. The experimental results show that this method can reduce the influence of service function chain resource configuration dynamic adjustment on quality of service, reduce network operation cost and improve the revenue of service providers.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권11호
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• pp.3030-3049
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• 2023

With the development and wide application of hybrid network computing modes like cloud computing, edge computing and fog computing, the customer service requests and the collaborative optimization of various computing resources face huge challenges. Considering the characteristics of network environment resources, the optimized deployment of service resources is a feasible solution. So, in this paper, the optimal goals for deploying service resources are customer experience and service cost. The focus is on the system impact of deploying services on load, fault tolerance, service cost, and quality of service (QoS). Therefore, the alternate node filtering algorithm (ANF) and the adjustment factor of cost matrix are proposed in this paper to enhance the system service performance without changing the minimum total service cost, and corresponding theoretical proof has been provided. In addition, for improving the fault tolerance of system, the alternate node preference factor and algorithm (ANP) are presented, which can effectively reduce the probability of data copy loss, based on which an improved cost-efficient replica deployment strategy named ICERD is given. Finally, by simulating the random occurrence of cloud node failures in the experiments and comparing the ICERD strategy with representative strategies, it has been validated that the ICERD strategy proposed in this paper not only effectively reduces customer access latency, meets customers' QoS requests, and improves system service quality, but also maintains the load balancing of the entire system, reduces service cost, enhances system fault tolerance, which further confirm the effectiveness and reliability of the ICERD strategy.

• Journal of the Korean Data and Information Science Society
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• 제17권3호
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• pp.763-774
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• 2006

The purpose of this study is to identify relationship among service quality, service value and customer satisfaction of food service industries. The respondents included 120 customers of K-restaurant in the survey. Data were analyzed by confirmatory factor analysis and cause-effect analysis among the constructs. After research model testing, the following results was obtained : Service Value was influenced directly and positively by the service quality. And customer satisfaction was influenced directly and positively by the service value. But customer satisfaction was not influenced directly and positively by the service quality.

• 한국컴퓨터정보학회논문지
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• 제16권3호
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• pp.157-165
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• 2011

B3G 네트워크에서 SLA 기반 QoS 관리방안은 서비스 이용자와 서비스 제공자 사이에서 이루어지는 협약으로 서비스 제공자는 협약된 사항을 근거로 사용자에게 통신 서비스를 제공하게 된다. 서비스 제공자는 협의된 서비스 레벨을 유지하기 위한 QoS 방안을 제공하며 이는 정책레벨에서 시스템 레벨까지의 세부방안을 포괄하여 다룬다. 협약된 서비스 정책에 의하여 서비스 제공자는 서비스 사용자와의 협약에 맞추어 정해진 QoS를 제공하며, 따라서 서비스 사용자는 신뢰적으로 서비스를 제공받을 수 있다. 따라서 본 논문에서는 B3G 네트워크에서 SLA 기반에서 이루어질 수 있는 서비스 협약을 통하여 사용자 서비스 제공을 위한 융합 망의 QoS 매핑에 대한 방안을 제안한다.

• 정보관리학회지
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• 제19권3호
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• pp.237-261
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• 2002

본 연구는 기대와 성과간의 비교를 통하여 이용자 관점에서 도서관 온라인 서비스에 대한 품질을 평가하였다. 이를 위해 22개 SERVQUAL 문항에 정보품질에 관련된 7개 항목을 추가하여 총29개의 측정항목을 개발하였고, 대덕연구단지내의 한 연구 도서관을 대상으로 온라인 설문을 실시하여 데이터를 수집하였다. 요인분석 결과 온라인 서비스의 품질을 결정하는 요소인 서비스차원은 5개로 묶여졌고, 정보품질 차원은 별개로 분리되어 나타났다. IPA(Importance Performance Analysis) 분석결과 정보품질, 신뢰성, 그리고 보증성이 중요한 서비스 요소임이 밝혀졌고, 다중회귀분석 결과 이용자의 만족에 가장 커다란 영향을 미치는 서비스 요소로는 유형성과 정보품질인 것으로 규명되었다.

• 한국콘텐츠학회논문지
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• 제7권7호
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• pp.133-143
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• 2007

본 연구의 목적은 정보품질과 서비스품질이 백화점의 서비스 만족도에 미치는 영향과 효과를 실증적으로 분석하는데 있다. 이러한 연구목적을 달성하기 위하여 문헌연구와 요인분석, 분산분석, 회귀분석을 이용한 실증적 연구를 함께 실시하였다. 본 연구의 분석결과는 다음과 같다. 첫째, 회귀분석결과 정보품질과 서비스 만족도와의 관계는 통계적 유의성이 매우 높게 분석되었다. 둘째, 분산분석에서 서비스품질에 따라 정보만족과 서비스기대치와의 관계도 유의성이 있는 것으로 나타났다. 결과적으로 정보지원체계와 서비스품질은 고객과의 관계에 있어서 주요한 요인으로 분석되었다.