• Asia pacific journal of information systems
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• 제24권4호
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• pp.473-491
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• 2014

There is a growing interest for 'Cloud computing' to cut costs, and help the users focus on their core business instead of being impeded by IT obstacles. As it became IT version 3.0 which represents the era of cloud services and the dominance of a new kind of IT service provider, cloud service providers (CSPs)' role is more critical as a trusted IT advisor to include cloud migration and integration expertise. However, previous literatures related to cloud computing service have mainly analyzed from customers, although it is hard for customers to totally understand the complex and diverse cloud ecosystem. Therefore, it is an urgent task to mitigate the inhibitory factors in providing the cloud services for activating cloud industry. This study, an exploratory research based on interviews, has derived factors of promoting and hindering the activation of cloud computing from the provider's perspective, and has analyzed a sequence of cause and effect for each factor. For this, the casual loop diagram was developed to deduce key issues, and propose an alternative. The results of this study are expected to help activate 'Cloud computing' in Korea by minimizing the potential negative effects of activating 'Cloud computing' industry.

• 한국IT서비스학회지
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• 제12권4호
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• pp.1-23
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• 2013

This study examines whether key characteristics of cloud computing services would affect the intention of use for personalized cloud computing services. The research model was generated based on Technology Acceptance Model (TAM) with resistance variable, and verified statistically by undertaking a survey about the perception of personal users. As the results of this analysis, we could find the structural relationship among the factors affecting adoption of the cloud computing service. We found that the expectation of ubiquity as a representative function of the cloud computing service meaningfully affected the perceived ease of use and resistance, and that the relativeness with existing services also meaningfully affected the perceived ease of use, but not the resistance. In addition, the moderating effects of use experience in the path leading from the perceived ease of use and resistance to the intention of use were identified. This study will provide diverse implications for the companies providing personalized cloud computing services.

• 한국전자통신학회논문지
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• 제7권5호
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• pp.1041-1051
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• 2012

최근 공개되어진 네트워크 인프라를 활용한 서비스 집약 솔루션인 Cloud Computing에 대한 공격은 개발 플랫폼과 웹 기반 제공 소프트웨어, 자원 서비스 등을 무력화시키는 침해 사고와 서비스 장애를 발생시키고 있다. 따라서 불법적인 서비스 차단에 대한 공격으로부터 Cloud Computing 시스템이 지원하는 3가지 서비스 (3S' : laaS, PaaS, SaaS)의 운영정보와 생성된 자료에 대한 보안연구가 필요하다. 본 논문은 Cloud Computing 서비스에 대한 공격과 방어 실험을 단계별 4-Stage 기반의 방어기법으로 최적의 서비스가 가능한 시스템 구축에 관한 연구이다. 최초 네트워크에 대한 접근을 관제하고 가상화 서비스 제어와 지원 서비스 분류, 다중화 경로 선정 등의 순차적이며, 단계적인 4-Stage 접근 제어를 실시하는 방어정책으로 공격을 분산시키고 각 Stage별 접근 제어를 위한 모니터링과 분석을 통해 방어정책 구현과 분석을 시행함으로써 공격 유형별 방어를 실험하고 연구 결과는 Cloud Computing 서비스 기반의 방어정책 구현을 위한 실무적인 기초자료를 제공하고자 한다.

• International Journal of Advanced Culture Technology
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• 제9권3호
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• pp.315-320
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• 2021

Currently, cloud computing is being used as a technology that greatly changes the IT field. For many businesses, many cloud services are available in the form of custom, reliable, and cost-effective web applications. Most cloud service providers provide functions such as IoT, machine learning, AI services, blockchain, AR & VR, mobile services, and containers in addition to basic cloud services that support the scalability of processors, memory, and storage. In this paper, we will look at the most used cloud service providers and compare the services provided by the cloud service providers.

• Journal of Information Processing Systems
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• 제16권6호
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• pp.1281-1292
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• 2020

More and more cloud computing services are being applied in various fields; however, it is difficult for users and cloud computing service platforms to establish trust among each other. The trust value cannot be measured accurately or effectively. To solve this problem, we design a service-oriented cloud trust assessment model using a cloud model. We also design a subjective preference weight allocation (SPWA) algorithm. A flexible weight model is advanced by combining SPWA with the entropy method. Aiming at the fuzziness and subjectivity of trust, the cloud model is used to measure the trust value of various cloud computing services. The SPWA algorithm is used to integrate each evaluation result to obtain the trust evaluation value of the entire cloud service provider.

• 한국빅데이터학회지
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• 제4권1호
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• pp.129-142
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• 2019

건설 프로젝트는 불완전한 생산환경으로 인해 많은 건설실패가 발생하고 있다. 본 연구는 건설 현장에서 건설 기간 동안 ICT 자원을 임대하여 활용하고, 물리적인 유선 통신망 대신 스마트 폰, 테블릿 PC, 노트북 등 Mobile Device를 활용하는 Mobile Cloud Computing Service(이하 M-Cloud)를 도입할 경우 M-Cloud가 갖고 있는 신속정확성, 공유협업성, 편재성 등의 특성들이 건설현장에 참여하고 있는 다양한 프로젝트 참여자들 간의 사회적 관계망에 영향을 주어 참여자들 간의 정보교환 및 융합을 촉진하고, 상호 신뢰증진과 함께 궁극적으로 프로젝트 기대성과에 큰 도움을 줄 수 있다는 것을 실증적인 방법으로 연구하였다.

• Journal of Information Technology Applications and Management
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• 제20권2호
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• pp.57-68
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• 2013

Recently, cloud computing has been viewed as a technology of great influence. Despite the importance of personal cloud services, the majority of cloud computing studies has been focused on an enterprise level. Therefore, in this research, we list variables of personal cloud computing characteristics (accessibility, storage, trust, perceived ease of use, availability) from preceding research done on an enterprise level. So, through pilot testing, we analyze whether examined characteristic variables affect the intention to use personal cloud computing. Next, we investigate the relevancy between user characteristics, including gender, age, and occupation, and the usage rate of personal cloud computing. Lastly, we implement an analysis of variance in order to speculate whether there is any difference between the five characteristic variables in using personal cloud computing between cloud service enterprises. For empirical testing people with experience in personal cloud computing are surveyed. Frequency analysis, exploratory factor analysis, internal consistency analysis, T-test, ANOVA, and multiple regression analysis are implemented with 325 valid samples. The analysis results are as follows: First, among user characteristic variables, 'occupation' shows a significant relationship with cloud service usage, Second, between cloud service enterprises, all five characteristic variables of 'Naver N Drive' are thoroughly evaluated and 'Google Drive' receives a high evaluation in availability and accessibility. Third and finally, all of the selected characteristic variables affect the intention to use personal cloud computing. However, availability is identified to be the most important factor. This research will serve as a reference to enterprises for the practical implementation of personal cloud computing service.

• 한국IT서비스학회지
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• 제14권3호
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• pp.99-116
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• 2015

The concept of Cloud computing has been introduced in the IT field over 10 years and industry has been expanding constantly. However, compare to the maturity of global market, Korea cloud computing industry is only in the early stage. Even the Korea has advantages in technology infrastructure; the pace of Korea cloud computing market growth is taking a serious downturn. Under these circumstances, it is needed to be discussing that strategy for expanding the cloud computing market size and for sustaining global competitiveness of local companies. Previous studies on plans for Korea cloud computing market has been conducted since 2009 and most of them are tend to examined in demand perspective. Thus, this study aims at identifying the priority of business challenges for making better performance in the market with service provider aspects. To analyze the important factors in the providing cloud computing service, ANP methodology was applied in this study. The network model including five clusters, security, stability, performance, consumer, and institution, was defined through literature review and expert survey was conducted to collect data. As a result of ANP analysis, 'Securing service reliability' was analyzed as the most important factor and followed by 'Preparing the range of legal liability', 'Preventing personal information leakage' and 'Preventing confidential information data leakage.' The priority of result indicates that service provider needs to focus on to make the secured service environment. This study has significance on analyzing the priority of business challenges in the service provider perspective. This study will provide useful guidelines to for establishing strategies in cloud computing market.

• 융합보안논문지
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• 제13권4호
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• pp.93-100
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• 2013

2012년 시스코가 발간한 '시스코 글로벌 클라우드 인덱스 2011-2016'에 따르면 전 세계 데이터 센터 트래픽은 2016년까지 4배 가량 증가하고, 클라우드 트래픽은 6배 가량 증가할 것이라고 전망했다. 이처럼 급증하는 데이터 센터의 트래픽 대부분은 데이터 센터 및 클라우드 컴퓨팅 워크로드로 인해 발생된다. 국방부는 지난 2010년, '2012 정보화사업계획'의 일환으로 2014년까지 클라우드 컴퓨팅 기술이 포함된 국방통합정보관리소를 구축하기로 결정하였고, 현재 추진 중에 있다. 국방통합정보관리소(메가 센터) 구축 시 반드시 고려해야 할 요소 중 하나가 클라우드 컴퓨팅 트래픽이다. 국방 클라우드 컴퓨팅 시스템이 구축되고 난 이후 국방 클라우드 트래픽은 꾸준히 증가할 것이다. 본 논문에서는 국방 클라우드 컴퓨팅 시범체계를 모델로 CloudAnalyst 시뮬레이션 툴을 이용하여 클라우드 트래픽 증가에 따른 서비스 가용성을 분석하였다. 3개 시나리오를 구성하여 시뮬레이션 수행 결과, 현재 시점에서 2016년까지 예측되는 클라우드 트래픽 성장률만큼 클라우드 워크로드가 증가하여도 국방 클라우드 시범체계는 서비스 가용성을 충족한다는 결론을 도출하였다.

• Journal of Biosystems Engineering
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• 제43권4호
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• pp.440-444
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• 2018

Purpose: Cloud-computing technology has several advantages, including maintenance, management, accessibility, and computing power. A greenhouse-control system utilizing these advantages was developed using a private cloud-computing system. Methods: A private cloud needs a collection of servers and a suite of software tools to monitor and control cloud-computing resources. In this study, a server farm, operated by OpenStack as a cloud platform, was constructed using servers, and other network devices. Results: The greenhouse-control system was developed according to the fundamental cloud service models: infrastructure as a service, platform as a service, and software as a service. This system has four additional advantages - security, control function, public data use, and data exchange. There are several considerations that must be addressed, such as service level agreement, data ownership, security, and the differences between users. Conclusions: When the advantages are utilized and the considerations are addressed, cloud-computing technology will be beneficial for agricultural use.