• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.05a
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• pp.524-527
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• 2001

According to the very rapid technological change and market mega-trends, the ITU(International Telecommunication Union) is now under Reform. In line with whole ITU reform, ITU-T (ITU- Telecommunications Standardization Sector) as global standards development organization has setup the two major environment such as ITU-T resolutions and new standards approval process for new study period 2001-2904 in the WTSA-2900. In this paper, we analyze on detailed EDH(Electronic Document Handling) activities, EDH related resolution and Methods as strategic tools within the ITU-T and its application to the New approval process which is described in ITU-T Recommendation A.8(AAP). Finally, we discuss future ITU-T EDH policy and suggest direction of Korean EDH policy.

• Journal of the Korea Computer Industry Society
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• v.3 no.8
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• pp.981-988
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• 2002

In this paper, a simple parallel compiler of a sequential loop is presented. This is a procedure for the automatic conversion of a sequential loop into a nested parallel DOALL loops at compile time. For this. the source program of Parafrase II parallel compiler is analyzed and a new general method the extracting parallelism in order to parallel processing effectively in nested loop is implemented.

• Journal of Intelligence and Information Systems
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• v.8 no.2
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• pp.51-69
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• 2002

In the supply chain environment on the web, collaborative problem solving and case-based modeling has been getting more important, because it is difficult to cope with diverse problem requirements and inefficient to manage many models as well. Hence, the approach on case-based modeling is required. This paper provides a framework that generates a goal model based on multiple cases, modeling knowledge, and forward chaining and it also develops a search algorithm through sensitivity analysis to reduce the modeling effort.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.280-283
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• 2014

Cloud Computing virtualizes logical resources like cpu, memory and disks etcs from physical machines. This virtualization technology increases computing resource utilization and supports dynamic resource allocations. Because of these benefits, global cloud computing services like Amazon AWS, Google Cloud and Apple iCloud are prevalent. With this cloud Computing services, there has been a request about cloud migration between different cloud environments. If one service which operates in a cloud computing environment wants to migrate to another cloud environment, there should have been a compitability between two different cloud environment. but even global cloud computing services do not support this compitability. In this paper, we suggest a process and technology to cloud migrations based on open sources.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.34 no.1
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• pp.341-353
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• 2014

In order to deliver a centimeter-level kinematic positioning solution with GPS carrier-phase measurements, it is prerequisite to use correctly resolved integer ambiguities. Based on the mathematical modeling of GPS network with application of its geometrical constraints, this research has investigated an instantaneous ambiguity resolution procedure for the so-called 'integer constrained least-squares' technique which can be effectively implemented in real-time structure monitoring. In this process, algorithms of quality control for the float solutions and hypothesis tests using the constrained baseline for the ambiguity validation are included to enhance reliability of the solutions. The proposed procedure has been implemented by MATLAB, the language of technical computing, and processed field trial data obtained at a cable-stayed bridge to access its real-world applicability. The results are summarized in terms of ambiguity successful rates, impact of the stochastical models, and computation time to demonstrate performance of the instantaneous ambiguity resolution proposed.

• 한국IT서비스학회:학술대회논문집
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• 2008.05a
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• pp.349-355
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• 2008

2006년 07월 정보시스템의 효율적 도입 및 운용을 지원하기 위해 ITA/EA 구축이 법제화 된 이후 ITA/EA 구축 기관의 수가 급격히 증가하고 있는 추세이다. 행정안전부의 자료에 따르면 2007년 10월 기준으로 약 36개 기관이 ITA/EA를 도입하였으며, 향후 총 49개 중앙행정기관, 총 16개 광역지방자치단체가 ITA/EA 도입계획을 제출하였다. 향후 5년간($2007{\sim}2011$) 약 1900억 원에 이르는 소요예산이 계획되어 있다. 그러나 활발한 구축 열기에 비해 기 구축된 아키텍처 정보의 관리 및 활용에 대해서는 다소 미흡한 부분이 있다. 행정안전부가 발표한 ITA/EA 기 구축 기관의 ITA 성숙도 측정결과 총 4개의 성숙도 측정 영역(투입, 산출, 관리, 활용) 중 "관리", "활용" 두개 영역의 성숙도가 가장 떨어지는 사실이 이를 반증하는 결과이다. 이러한 이유로 아키텍처 정보의 관리 및 활용에 대한 이슈는 최근 ITA/EA 추진하는 조직의 최대 관심사가 되고 있다. 넥스젠엔씨지는 이러한 현행의 ITA/EA 추진의 이슈를 해결하기 위한 방안으로 기 구축된 아키텍처 정보의 현행화를 위한 ITA/EA 현행화 프레임워크(NAMF)와 구체적인 현행화 절차를 개발하였다. 또한 최근 이를 적용하여 대규모 아키텍처 정보에 대한 현행화를 완료하였다. 넥스젠엔씨지의 아키텍처 현행화 방법론과 적용 사례는 현재 ITA/EA 도입을 계획하거나, 기 도입한 조직의 아키텍처 정보 현행화 이슈 해결하는데 이바지 할 것으로 기대된다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.4A
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• pp.342-351
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• 2008

In this paper, a new handover procedure for OFDM-based multi-hop relay systems is proposed to reduce the handover overhead by distinguishing inter-cell handover event from intra-cell handover event at the level of physical layer using a hierarchical design concept of preamble. A Subcell ID concept for identifying RS in a cell is proposed in the design of hierarchical manner, in addition to the existing Cell ID for identifying BS. The decision on either inter-cell handover or intra-cell handover is made by the signal quality measure of CBINR(Carrier of BS to Interference and Noise Ratio) and CRINR(Carrier of RS to Interference and Noise Ratio), provided by the hierarchical preamble. The proposed handover procedure can simplify scanning procedure and skip/simplify network re-entry procedure (capability negotiation, authorization, registration), resulting in a significant reduction of handover overhead.

• Journal of the Korean Society of Marine Environment & Safety
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• v.18 no.1
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• pp.49-54
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• 2012

The purpose of this study is to define emergency response procedures by BDMS [Building Disaster Management System] when earthquake occurs on long-span bridge structures. The study is about developing a computer-based algorithm for various earthquake intensities that works with the System. Presently, long-span bridge disaster prevention relies on closed-system centered on human intervention alone. However, this study combines IT technology and internet-based open system creating a more practical system. Additionally, assigned duties and tasks are clearly defined to all personnel involved in various disaster situations using the Active Action Diagram(AAD) techniques. Also, the design of 3-dimensional view assists to determine the appropriate initial response in times of earthquake and other disasters. The combination of the existing manual emergency response procedures and the scenario-based (IT) response system being developed will create an efficiency and fast response actions in times of emergencies.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.06a
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• pp.223-224
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• 2014

Along with container freights keep increasing globally, lots of containers used for inland distribution increase steadily too. In Korea, there are many modes to transfer container freights such as roadway, railroad, coastal shipment. The roadway transportation is the most common but it is considered as the most inefficient mode. This paper studies about reasons that affect to the inefficiency of roadway transport and finds solution to resolve the problem. First backhaul transportation is addressed and some suggested solutions are presented such as construction of inland inspection center or managing efficiently container management. Then mathematical model is used to show the quantitative evaluation of backhaul transport solution.

• Korean Journal of Construction Engineering and Management
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• v.7 no.1 s.29
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• pp.128-137
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• 2006

Recently the role and the importance of design value engineering is expected to be high, so research is needed for its effective accomplishment. But in domestic arena, the introduction of the history of design value engineering is too short and insufficient in act of research. Therefore in this research we have suggest the standard for the effective accomplishment of design value engineering work. The way is the abstraction many causes. firstly, we analyzed the team project case of value engineering professional instruction. second, we analyzed the cause of problem produced in accomplishment process of design value engineering work through research for the professional field. So from the base of the analyzed content, we have suggest main control factor for the effectiveness of design value engineering work and the following scheme and process of work efficiency optimization.