• Proceedings of the Korean Information Science Society Conference
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• 2008.06b
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• pp.105-109
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• 2008

자동차, 항공기, 철도차량, 선박 등의 제품개발에 필요한 일련의 엔지니어링 활동들을 유기적으로 연결하고 통합하기 위해서는 엔지니어링 협업(비지니스 프로세스)을 처리하기 위한 시스템이 요구된다. 엔지니어링 프로세스 협업을 구성하는 엔지니어링 서비스는 일반적인 웹 서비스와 비교할 때 상대적으로 긴 응답시간과 높은 실행비용 등에서 차별화 된다. 본 논문에서는 서비스 조합에 수치해석 특성, 서비스 크기 등의 엔지니어링 서비서의 특성들을 반영시켜 제한된 시간과 비용을 만족하는 엔지니어링 프로세스 협업을 처리할 수 있는 웹 서비스 조합 시스템을 제안하였다. 또한 서비스 조합 모델링 단계에서 QoS 기반 서비스 선택 액티비티와 서비스 조합 실행 단계에서 서비스 선택 알고리즘을 제시하였다.

• Journal of KIISE:Software and Applications
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• v.29 no.5
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• pp.289-294
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• 2002

It is known that restructuring feed-forward neural network affects generalization capability and efficiency of the network. In this paper, we introduce a new approach to restructure a neural network using abstraction of the hidden knowledge that the network has teamed. This method involves extracting local rules from non-input nodes and aggregation of the rules into global rule base. The extracted local rules are used for pruning unnecessary connections of local nodes and the aggregation eliminates any possible redundancies arid inconsistencies among local rule-based structures. Final network is generated by the global rule-based structure. Complexity of the final network is much reduced, compared to a fully-connected neural network and generalization capability is improved. Empirical results are also shown.

• KOREAN POULTRY JOURNAL
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• v.4 no.3 s.29
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• pp.40-43
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• 1972

지난 1월 부화협회의 생산조절사업이 시도되었다가 보류된 상태에서 이번에는 생산업자들이 자체 조절을 하지 않으면 불황을 타개 할 수 없다는 결론끝에 모였다. 이 모임을 확대해 나가면 생산자 출하조합으로 까지 연결시킬 수 있을 것이라는 희망을 가지고 생산자들의 이목을 집중시키고 있다.

• Journal of Korean Society of Steel Construction
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• v.19 no.3
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• pp.303-312
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• 2007

Steel box girder bridges are being commonly designed for medium-span bridges of span length. Composite truss bridges with steel diagonals instead of concrete webs can be an excellent design alternative, because it can reduce the dead weight of superstructures. One of the key issues in the design of composite truss bridges is the joint structureconnecting the diagonal steel members with the upper and lower concrete slabs. Because the connection has to carry concentrated combined loads and the design provisions for the joint are not clear, it is necessary to investigate the load transfer mechanism and the design methods for each limit state. There are various connection details according to the types of diagonal members. In this paper, the joint structure with group stud connectors welded on a gusset plate is used. Push-out tests for the group stud connectors of were performed. The test results showed that the current design codes on the ultimate strength ofthe stud connection can be used when the required minimum spacing of stud connectors is satisfied. Flexure-shear tests were conducted to verify the applicability of the design provisions for combined load effects to the strength of joint structures. To increase the pullout strength of the connection, bent studs were proposed and utilized for the edge studs in the group arrangement of the joint. The results showed that the details of the joint structure were enhanced. Thereafter, design guidelines were proposed.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.445-447
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• 2003

본 논문에서는 NAT와 프락시를 조합하여 그리드 환경에 적합한 사설 IP 클러스터의 통신 연결 중계방안을 제시한다. 기존에 서비스되고 있는 NAT와 사용자 영역의 프락시를 조합하여 사용하면 프락시만을 사용한 것에 비해 문맥 전환 비용을 전반으로 줄인 수 있고 커널 영역에서만 구현한 것에 비해 이식성을 놓일 수 있는 장점이 있다. 성능 측정 결과 25% 정도의 성능 향상이 있었으며 차후에는 이 메커니즘을 MPICH-G2에 이식하여 사설 IP를 사용한 글로버스 시스템의 구축이 가능하도록 할 것이다.

• Proceedings of the Korean Society for Information Management Conference
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• 1995.08a
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• pp.111-114
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• 1995

전산환경에서 유용한 색인도구로서의 통제어휘집을 구성하는 원칙과 방법을 제시하고자 전조합색인용 통제어휘집인 LC주제명표목표의 표목구조와 후조합색인용 통제어휘집인 시소러스의 용어구조를 비교하였다. 주제명표목표에서 사용되는 도치표목, 전치사로 연결된 표목, 접속사로 연결된 표목, 세목을 가진 표목을 시소러스에서 사용되는 색인구조와 비교분석 하였다. 주제명표목표가 참조구조를 시소러스체제로 변환시켰을 때 나타나는 문제점도 파악하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04d
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• pp.530-532
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• 2003

이 논문에서는 Semi-lightpath를 이용한 복구 경로의 준-동적 조합에 의한 WDM 망 복구 기법을 제안한다. 제안된 기법에서는 광파장 채널의 종단 노드간에 여러 개의 부분적인 대체 광파장 채널을 연결함으로써 복구를 수행한다. 이 방법은 정적인 복구 기법과 동적인 복구 기법의 장점을 모두 수용하여 빠른 복구 속도와 복구 동작의 유연성을 동시에 제공하며, 종단간 대체 경로를 여러개의 부분적인 대체 경로로 분할함으로써 복구 경로 및 예비 대역폭의 공유 정도를 높여 통신망 자원 이용의 효율성을 높일 수 있다.

• The KIPS Transactions:PartD
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• v.12D no.6 s.102
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• pp.889-898
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• 2005

Recently, one of the most challenging problems is to compose web services dynamically, that is, on demand. A number of researchers have been considerably interested in the dynamic web services composition. However, while most of them focused on the semi-automatic web services composition with a human controller, very little attention was devoted to the full automation of this process. This paper primarily focuses on the automatic web services composition techniques. The main idea is to implement an automatic web services composition system using web ontologies to realize the semantic web and workflow technologies to play a major role in E-businesses. In this paper, we propose a matching algorithm for web service discovery and present an approach based on the use of ontologies to facilitate the interoperability of web services. Finally, we describe a workflow execution plan to support the automatic web services composition, and an experimental study that shows the high performance of our system.

• Korean small business review
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• v.43 no.3
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• pp.43-73
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• 2021

The purpose of this study is to examine the effect of the collective psychological ownership (CPO) of the board of directors of cooperatives on organizational performance, and to find out the mediator effect of shared leadership between CPO and organizational performance. In this study, we collected a data set of the survey of 453 directors from 78 local consumer cooperatives of iCOOP Korea. The study found that the CPO of the board of directors of consumer cooperatives had a positive impact on the social performance and activity performance of the organization. More importantly, the mediator effect of shared leadership between CPO and performance was statistically significant. These results suggest that strengthening CPO on the board is necessary for the performance of co-operatives, and that shared leadership is an important medium for linking CPO to performance.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.30 no.11A
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• pp.979-986
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• 2005

In optical networks, traffic demands often demonstrate periodic nature for which time-overlapping property can be utilized in routing and wavelength assignment (RWA). A RWA problem for scheduled lightpath demands (SLDs) has been solved by combinatorial optimal solution (COS) and graph coloring, or heuristic sequential RWA (sRWA). Such methods are very complex and incurs large computational overhead. In this paper, we propose an efficient RWA algorithm to utilize the time disjoint property as well as space disjoint property through fast grouping of SLDs. The computer simulation shows that our proposed algorithm indeed achieves up to $54\%$ faster computation with similar number of wavelengths than the existing heuristic sRWA algorithm.