• Journal of the Korean Society for Library and Information Science
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• v.38 no.1
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• pp.263-279
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• 2004

This study intends to design a metadata service system of the science information for youth on the web based on the efficiency of the metadata system. Metadata scheme of the science information for youth on the web has been developed and designed metadata collection on the basis of the previously designed classification system. Metadata scheme of the science information for youth, which is consisted of six essential elements and four additional elements, has been brought out, compared to not only Dublin Core Metadata Element Set, but also the main studies related to domestic and foreign metadata projects. Based on the results of it, metadata database of the science information has been designed and it is expected to be applicable to metadata service system of the science information for youth on the web.

• Journal of Broadcast Engineering
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• v.25 no.3
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• pp.305-312
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• 2020

As a demand for a new video coding standard having higher coding efficiency than the existing standards is growing, recently, MPEG and VCEG has been developing and standardizing the next-generation video coding project, named Versatile Video Coding (VVC). Many inter prediction techniques have been introduced to increase the coding efficiency, and among them, an adaptive motion vector resolution (AMVR) technique has contributed on increasing the efficiency of VVC. However, the best motion vector can only be determined by computing many rate-distortion costs, thereby increasing encoding complexity. It is necessary to reduce the complexity for real-time video broadcasting and streaming services, but it is yet an open research topic to reduce the complexity of AMVR. Therefore, in this paper, an efficient technique is proposed, which reduces the encoding complexity of AMVR. For that, the proposed method exploits a special VVC tree structure (i.e., multi-type tree structure) to accelerate the decision process of AMVR. Experiment results show that the proposed decision method reduces the encoding complexity of VVC test model by 10% with a negligible loss of coding efficiency.

• Journal of KIISE:Computer Systems and Theory
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• v.35 no.12
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• pp.568-575
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• 2008

Server consolidation by sever virtualization can make one physical machine(PM) to run several virtual machines simultaneously. Although It is attractive in cost, it has complex workload behaviors. For that reason, efficient resource management method is required. Dynamic relocation of virtual machine(VM)[3,4] by live migration[1,2] is one of resource management methods. We proposed SCOA(Server Consolidation Optimizing Algorithm) : a fine-grained load balancing mechanism worked on this dynamic relocation mechanism. We could obtain accurate resource distribution information through pointed physical machines on multi dimensional resource usage coordination, so we could maintain more balanced resource state. In this paper, we show the effectiveness of our algorithm by comparison of experimental results between SCOA and sandpiper[3] by software simulation.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.30 no.3
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• pp.229-240
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• 2012

In Korea, u-City has been constructed as IT-based new city with introduction of the ubiquitous concept. However, most currently provided u-services are just monitoring services based on the USN(Ubiquitous Sensor Network) technology, so spatial analysis is insufficient. Especially, buildings have been rapidly constructed and expanded in multi-levels, and people spend a lot of time in indoor space, so indoor spatial analysis is necessary. Therefore, connectivity relationship in indoor space is analyzed using the topological data model. Topological relationships could be redefined due to the dynamic changes of environment in indoor space, and changes could have an effect on analysis results. In this paper, the algorithms of finding isolated zones is developed by analyzing connectivity relationship between space objects in built-environments after changes of environment in indoor space due to specific situation such as fire. And the system that visualizes isolated zones as well as three-dimensional data structure of indoor space is developed to get the analysis result by using the analysis algorithms.

• Journal of the korean Society of Automotive Engineers
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• v.27 no.6
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• pp.30-33
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• 2005

10년 후, 미래의 자동차는 더 이상 단순한 운송수단이 아닌 우리의 삶을 윤택하고 더욱 풍요롭게 만들어주는 일상의 공간(업무 휴식 정보)으로 진화 발전할 것이다. 이러한 자동차 패러다임 변화의 중심에는 지능형자동차 기술이 자리하고 있다. 지능형자동차 기술은 자동차산업뿐만 아니라 사회 경제 전반에 미치는 파급효과가 매우 크기 때문에 국가 경쟁력 강화를 위한 차원에서도 큰 가치를 지니고 있다. 또한 미래형자동차는 안전성 편의성 향상이라는 소비자들의 다양한 요구와 시장의 확대를 희망하는 기업의 요구가 잘 맞물려 있기 때문에 향후 기술개발에 대한 예산 확충 및 지원 확대가 절실히 필요하다. 지난 1990년대부터 지능형자동차 개발에 적극적으로 참여한 일본, 미국, 유럽 등 자동차선진국은 최근 각종 신기술을 개발해 시장에 내놓고 있다. 자동차 10대 강국 중하나인 한국은 21세기 세계 자동차시장 선점과 오는 2010년 세계 3위의 기술 강국으로 도약한다는 야심찬 계획을 세우고, 지난 2003년에 미래형자동차를 국가 '차세대 성장동력산업'으로 선정하였다. 이에 따라 국가연구개발사업인 '미래형자동차사업'을 출범시켰으며, 국내 자동차업계는 물론 대학 및 연구소 등과 연계하여 '지능형자동차' 등 3분야의 관련 핵심기술 개발에 박차를 가하고 있다. '지능형자동차 기술개발'이라는 비전과 목표를 달성하기 위해서는 IT기술과 자동차와의 융합기술 개발이 그 무엇보다 중요하다. 우리나라가 세계에 IT강국으로서 명성을 널리 자랑하고 있다는 점에서 지능형 자동차의 미래는 밝다고 할 수 있지만, 관련 분야의 인적자원 네트워크 구축이 보다 탄탄하게 다져지지 않는다면 이는 그저 '빛 좋은 개살구'에 지나지 않을 것이다. 끝으로 국내에서 진행되는 ITS 관련 프로젝트와 지능형자동차 개발 연구과제의 유기적 연계와 효율적 추진, 지능형 자동차 시험 평가방법 표준화, 국제 기술 표준화 및 안전규제에 적극 대응, 지능형자동차 신규제품 및 서비스의 도입을 위한 제도개선 및 정비 등에, 정부와 산 학 연이 지혜를 모아 중점 실행계획을 수립하고 행동으로 옮길 때 우리의 지능형 자동차 미래는 밝을 것이다.

• Proceedings of the KSR Conference
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• 2008.06a
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• pp.1479-1485
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• 2008

This paper shows the result of study on the detailed applicable procedure of software Escrow account applied for rolling stock. The customer as end-user requires software source code, related critical technical documents etc. about software based system of train for maintenance purpose through software modification and enhancement after completion of warranty period. Otherwise, it is not easy to keep up with the customer's requirement of demanding supplier's exclusive information because it is considered as intellectual property rights of supplier as software developer. Therefore, the main contractor(normally called as Car-builder) need to introduce software Escrow service in order to coordinate the different a standpoint between software developer and end-user. Software Escrow is a legal arrangement in which an software Escrow packages (software source code, software development tool, build process, proprietary information, copyright and etc.) is deposited into and Escrow account under the trust of a reliable third party (Escrow agent) depending on mutual agreement on Escrow contract condition as signing off Escrow agreement document. This paper deals with the study on the detailed procedure about the following general category of Escrow procedure and purpose to apply this specific procedure of Escrow into the future project onward.

• Design Convergence Study
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• v.15 no.2
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• pp.169-184
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• 2016

Using geospatial information in the early design phase is crucial because it requires considerable time, money, and effort. We use VWorld, part of the National Spatial Information Distribution system provided by the Korean Ministry of Land, Infrastructure and Transportation, for providing geospatial information to building designers. We provide methods to adopt VWorld geospatial information to building design and develop plugins for a BIM authoring tool to transform and construct necessary BIM data in a user-friendly format. BIM users are benefitted from extra design information supplied from sibling disciplines such as urban design. GIS users are benefited by feedback building information continuously supplied from building projects based upon standard GIS coordinates. It is clear that an architectural designer with BIM tool can save time and efforts to obtain the geospatial information related a project using the developed system as result of this research.

• Korean Journal of Construction Engineering and Management
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• v.17 no.3
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• pp.23-31
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• 2016

The domestic market of CM at Risk has not been activated yet. It was analyzed duo to the fact that construction owners didn't have confidence in CM at Risk, because of the concerns regarding CM firms reliability, service, specialty, system and feasibility. Therefore, this study analyzed the problems to find the reason for declines in orders through a business diagnosis based on the Business Model Canvas(BMC) and set up the direction of business model improvement with one on one expert interviews. Additionally, we suggested the sub-activities for the business model improvements of CM at Risk service that are divided into 9 building blocks. Through this method, we determined that we would need preceding innovation activities such as good communication with customers, reinforcement of subcontract and excellence in project operations to convert the successful practice and settlement of the CM business model based in BMC. It is expected that the business model suggested from this study would contribute to improvement of CM at Risk competition and the differentiation strategy when compared with other firms. Also, it would be used a basis data to develop CM at Risk business model in the future.

• The Korean Society of Law and Medicine
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• v.17 no.2
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• pp.221-255
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• 2016

The Russian government enacted the 'Federal Law on the Free Port of Vladivostok' to improve the medical industry in the Far East in 2015. As a result, Korean medical institutions are increasingly interested in advancing into Free Port of Vladivostok. Increased demand for high-quality Korean medical services from Russian patients and the active government policy direction of the Russian government serve as strengths and opportunities for advancing into Free Port of Vladivostok. On the other hand, the legal imperfections caused by the delay in the establishment of sub-regulations for Federal Law on the Free Port of Vladivostok and the low reliability of the Russian government are both weaknesses and threats. Therefore, Korean medical institutions will need to carefully consider the timing of advancing into Free Port of Vladivostok by closely monitoring the process of establishing the sub-regulations of Federal Law on the Free Port of Vladivostok. And it is the most realistic model for Korean medical institutions to establish 'Professional clinic model linked with health screenings(1st stage model)'. The Korean government needs to conclude a 'MOU for Cooperation on Health and Medical Care between Korea and Russia' with the Russian government and should also carry out the 'Korean Minnesota Project'.

• Asia pacific journal of information systems
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• v.23 no.2
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• pp.41-66
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• 2013

IS outsourcing has an important meaning to the Korean SME's (Small and Medium Enterprises) which want to use the IS Services. The objective of this research is to manage IT risks occurred during IS outsourcing project process. This study tries to identify these risks using real option methodology. In order to perform this objective, this study set up the research model which is composed of two main concepts. The first one is the risk factors occurred during IS outsourcing project process: User's Risks, Supplier's Risks and Transaction's Risks. All of these risks are based on Transaction Cost Theory. The second one is the intention to get (or buy) Real Options to manage the risks. In the research model, two types of real option are included: option to abandon (put option) and option to defer (call option). This study uses questionnaires and statistics methodology (PLS) to analyze the hypotheses proposed in the research model. Compared with prior studies, this study is different in two ways. First, this study restricts the range of IT risks. Prior researches of IT Risk management in MIS area cover various range of IT risks, but this study focuses on the Korean SME's IT outsourcing risks on the basis of Transaction Cost Theory. This study tests the relationship between the risks and real option types. Second, this study tries to test the moderating effect of user's risks and supplier's risks on the relationship between transaction's risks and real option types. In IT outsourcing research area, almost studies focus on the direct relationships between IT risks and outsourcing success. But in reality, the co-relationship among IT risks may occur. There are some findings according to the research analysis. First, risks related with user's risks have strong causal relationships with the intention to get option to abandon (put) and option to defer. But risks related with supplier's risks have causal relationships only with option to abandon (put). Second, user's risks and supplier's risks have no moderating effect on the relationship between transaction's risks and real option types. According to the research results, this research have some important and interesting implications on the IS outsourcing business area. First, this study identifies the effective types of real option to minimize the risks occurred during the IT outsourcing projects. So IS outsourcing service users can manage (or minimize) effectively the risks, which occurred during outsourcing projects, using real options. Second, real option gives benefits to suppliers and users at the same time (i.e., win-win strategies between IS outsourcing service providers and users). Vendors (:IS outsourcing service providers) can offer users the real options which can minimize the occurrence of risks in time. "IN TIME" means that before the IS outsourcing project starts, vendors can offer users the opportunity to buy real options in appropriate prices to manage the possibility of the risks of IS outsourcing project. And users also have chance to minimize the IT outsourcing risks occurred during the project process using real options.