• Journal of KIISE
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• v.42 no.5
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• pp.580-590
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• 2015

Recently, the issue of efficient power management in datacenters as a part of green computing has gained prominence. For realizing efficient power management, effective power monitoring and analysis must be conducted for servers in a datacenter. However, an administrator should know the exact structure of the datacenter and its associated databases, and is required to analyze relationships among the observed data. This is because according to previous monitoring approaches, servers are usually managed using only databases. In addition, it is not possible to monitor data that are not indicated in databases. To overcome these drawbacks, we proposed an ontology-based monitoring approach. We constructed domain ontology for management servers at a datacenter, and mapped observed data onto the constructed domain ontology by using semantic annotation. Moreover, we defined query creation rules and server state rules. To demonstrate the proposed approach, we designed an ontology based monitoring system architecture, and constructed a knowledge system. Subsequently, we implemented the pilot system to verify its effectiveness.

• Proceedings of the KIPE Conference
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• 2003.07b
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• pp.938-941
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• 2003

본 시스템은 나주 생물자원산업화센터에 설치된 태양광 및 태양열 시스템에 대한 운전결과특성으로써 특용작물배양의 전원 및 온수공급을 위한 것이다 태양광발전은 10kWP이고, 태양열시스템은 500l 로 구성되어 있다. 태양광발전시스템의 인버터는 10kW급 계통연계형으로써 상용전원과 연계해서 사용할 수 있도록 하였으며 태양열시스템은 생물자원산업화센터의 실험용 급탕으로 사용된다. 본 논문에서는 태양광발전과 태양열시스템이 설치된 생물자원산업화센터에 상주 근무인원을 대체하기 위해서 원격 모니터링 시스템을 구성하였고, 모니터링에 의해 축적된 데이터를 통해 그 특성을 비교하고자 한다.

• Proceedings of the KAIS Fall Conference
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• 2004.11a
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• pp.127-130
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• 2004

e-VLBI(electronic VLBI)는 각 관측 사이트에서 얻은 대용량의 VLBI 데이터를 영상합성처리센터로 전송하기 위하여 네트워크를 이용하는 기술이다. 이는 전세계의 관측소에서 얻어낸 막대한 용량의 데이터를 실시간, 준-실시간 형태로서 데이터센터에 전송할 수 있는 유일한 방법으로서 초고속정보통 신망을 적극적으로 활용하는 전파천문학의 혁신적인 방법이라 할 수 있다. 한국천문연구원에서는 연세대, 울산대, 탐라대에 건설되는 21m 전파망원경과 대덕전파천문대의 14m 전파망원경을 네트워크로 연결하는 e-KVN(Korean VLBI Network) 계획을 추진중에 있으며 이는 각관측소에서 얻은 VLBI 데이터를 네트워크를 통하여 1024Mbps로 데이터센터까지 실시간으로 전송하는 것을 그 궁극적 목표로 하고 있다.

• Journal of Digital Convergence
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• v.11 no.12
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• pp.467-477
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• 2013

The cloud computing has propagated rapidly and thus there is growing interest on the introduction of cloud services in the public institution. Accordingly, domestic public institution are adoption of cloud computing impose and devise a plan. In addition, more specifically, is building a cloud computing system in the public institution. However, solutions to various security threats(e.g., availability invasion of storage, access by unauthorized attacker, data downloaded from uncertain identifier, decrease the reliability of cloud data centers and so on) is required. For the introduction and revitalize of cloud services in the public institution. Therefore, in this paper, we propose a public key based secure data management scheme for the cloud data centers in public institution. Thus, the use of cloud computing in the public institutions, the only authorized users have access to the data center. And setting for importance and level of difficulty of public data management enables by systematic, secure, and efficient. Thus, cloud services for public institution to improve the overall security and convenience.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.12
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• pp.8400-8407
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• 2015

The purpose of this study was to understand the subjective perception of Related group's Concerning the Identity of Community Children Center. Q methodology was applied of the study. 23 Q-statements were created based on selected 337 statements and were classified by 40 candidates who related Community Children Center. The obtained data were analyzed by means of PC Quanl program. The result showed that the identity of Community Children Center were classified in 4 types. The types included "Type I: the leading agency for children, families and communities", "Type II: Agency that operated by dedication and commitment" "Type III: Center that complements the family" "Type IV: Systematic operational support standardization is required. In conclusion, the results of the data revealed the importance of the various recognition-types of individuals related to the identity of the community children's center.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.47 no.11
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• pp.7-13
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• 2010

For swiftness and economic feasibility of parcel delivery, optimal location of mail exchanging centers considering not only section delivery distance but also some weights like the number of delivery vehicles are necessary. In this paper, a mechanism with section delivery distance and vehicle number for locating of mail distribution centers which connect some mail centers of major cities in Republic Korea by applying GOSST theory is proposed. This mechanism for locating mail exchange centers can make the total delivery distance of postal matters less than not only present method which assigns Daejun as mail exchange center, but also Steiner tree method which does not consider weights like number of delivery vehicles. The mechanism is good for protecting the environment as well as rapid and economic delivery. In experiment, the proposed mechanism could curtail total delivery distance by 2.52 percentages compared with Steiner tree method and by 6.66 percentages compared with present method. The mechanism may be used in electric power transmission routing, distribution line topology design, power relay station locating where various voltages and other weights should be considered.

• Journal of Information Technology and Architecture
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• v.11 no.1
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• pp.53-62
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• 2014

The research tries to find appropriate nations and cities of the international supporting centers according to Korean firms' requests. It also tries to find out proper designs of governance structure and strategic and operational control system of the center. Two methods are used to find out Korean firms' requests. One is the expert interviews and the other is the questionnaire survey. The email survey is sent to 120 firms of IT service, package software, telecom facilities and broadcasting equipment industries. Their opinions in addition to interview results are used as a basis of selecting potential regions for new centers and types of their services. According to survey results, southeast asia is the most preferred region and Indonesia, Vietnam, Thailand, Malaysia and Singapore are selected as potential nations for a location of the center in southeast asia. However, the survey result is not fully agreed with the interviewees' opinions. The interviewees tell that there are not much demand in nations with low purchasing power and low IT industry level. That is, Indonesia and Vietnam are not proper places for the centers.

• Journal of the Korea Society of Computer and Information
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• v.20 no.4
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• pp.11-16
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• 2015

Data center, not only the development of globally of cloud-based IT solutions, As the big data, education, use of development electronic equipment of communication means is increased, Demand of domestic and international data center has increased steadily. Due to the increase of data center demand, heat generation of server rack due to the development of IT equipment is also increasing continuously. Calculating heat value of the data center, because more than 99% of the power usage of IT server is converted into heat, the calorific value as the size and capacity of the server is larger will increase. In this paper, to center the cooling system of air-cooled, and research and development of air conditioning systems for energy reduction of data center, through performance analysis and simulation, it has been analyzed that there is energy savings.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.414-417
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• 2012

Recently, there will be many changes that revised emergency medical service with prescribe specialist doctor emergency medical center duty. if emergency patients come emergency medical center, in the existing system, emergency patients receive treatment in order emergency room doctor and 1-2 resident and 3-4 resident and specialist doctor. in improved system, emergency patients receive treatment to emergency room doctor and duty specialist doctor. as a result, the procedure was. simplify. but appling such a system, there should be placed duty specialist doctor about all departments in hospital. So, all hospitals be difficult to place duty specialist doctor about all departments in hospital. In this paper, to use mobile device, there design integrated emergency center management system for revision of the emergency medical service to use emergency medical center service near the user's and specialist doctor service in hospital and the hospital's information service and Emergency room usage service.

• Proceedings of the KAIS Fall Conference
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• 2010.05b
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• pp.1185-1188
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• 2010

본 연구는 최근 고객접점근무자인 콜센터 산업 근무자들은 고객과 기업의 접점에 위치하여 일대일 고객 응대가 이루어지는 곳의 중요 인적자원으로 자리 잡고 있다. 이러한 콜센터 산업은 높은 이직률로 인하여 안정적인 조직성과 달성 및 긴밀한 고객관리 관계를 어렵게 한다. 또한 콜센터를 운영하는 기업은 인적자원의 직무만족과 조직에의 몰입도를 제고함으로 조직유효성에 전략적으로 접근할 수 있다. 즉, 고객과 기업의 접점에서 기업의 연결고리 역할을 수행하고 있는 콜센터 부분 인력의 직무만족과 직무몰입 정도에 영향을 미치는 요인을 파악하여 오늘날 기업 경영 흐름에 전략적 대응을 이끌어 내고 이직률이 높고 직업만족도가 낮은 고객접점근무자들에게 화두를 제시하고 있다. 고객의 요구를 즉시 반영 할 수 있고 고객관계 관리를 위하여 고객정보 수집이 이루어지는 대고객접점위치의 콜센터 산업(부문) 여성인력들의 직무만족과 조직 몰입도에 영향을 미치는 요인을 분석하는데 그 목적을 두고 있다. 연구결과 먼저, 직무만족에 영향을 미치는 요인으로는 첫째, 동기요인 중에서 직무, 승진, 능력은 직무만족에 영향을 미치는 것으로 나타나고 동기요인 중에서 성취, 책임은 기각되었다. 둘째, 위생요인 중에서 보수, 상사는 직무만족에 영향을 미치는 것으로 결과가 나타나고 위생요인 중에서 동료는 기각되었다. 직무의 몰입에 대한 결과는 첫째, 정서적 몰입은 동기요인 중 직무와 능력요인은 정서적 몰입에 영향을 미치나 위생요인은 그렇지 않을 것으로 분석되었다. 둘째, 조직몰입에 대한 신호방향(인/아웃바운드)으로 나누어 보면 인바운드 부서에서 조직몰입에 영향을 미치는 요인은 성취와 보수이고 아웃바운드는 직무, 능력, 승진, 성취, 보수가 채택되었다.