• 경영과정보연구
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• 제36권2호
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• pp.1-20
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• 2017

SCM은 기업의 성과를 향상시키기 위해 공급사슬 전체를 유기적으로 통합한 전략적 협업체이다. SCM의 활동을 효율적으로 달성하기 위해서는 상호 장기적 관계수립을 위한 변화관리가 강조되고 있다. SCM 시스템의 구현은 공급사슬 내의 기업 및 구성원들의 광범위한 변화를 가져오고, 이러한 변화는 기업 및 구성원의 저항에 부딪칠 수 있기 때문이다. 따라서, 효과적인 변화관리 없이는 SCM 시스템의 성공을 보장 할 수 없다. 또한 본 연구에서는 정보특성 (정보품질, 정보공유)를 통한 SCM 시스템성과를 측정하기 위해 정보역량을 개념을 채택하였다. 따라서, 본 연구는 변화관리가 정보품질과 정보공유를 통해 정보역량에 미치는 상호호혜적인 인과관계를 밝히고자 하였다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 변화관리는 정보품질, 정보공유, 정보역량에 모두 유의한 영향을 보였다. 둘째, 정보품질 역시 정보공유 및 정보역량에 유의한 영향을 보였다. 마지막으로, 정보공유 또한 정보역량에 유의한 영향을 보였다.

• 산경연구논집
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• 제8권6호
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• pp.61-73
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• 2017

Purpose - Aviation control, navigation, and aircraft control in the air transportation area are very specialized. Each part is in progress for safety, efficiency, automation, and further. On the other hand co-work among each part including knowledge sharing has been inattentive for many reasons. The purpose of this research is to show how practicians and professionals in the air transportation area perceive the issue of knowledge sharing and to recall the necessity of knowledge sharing in the area. And we try to find ways to activate the knowledge sharing in the area. Research design, data, methodology - For the research, we inquired into whether practicians and professionals think knowledge sharing can effect safe aviation positively or not and what steps are necessary to activate knowledge sharing in the area. We adopted survey method using questionnaires for current practicians and interview for specialists. The survey and interview results were analyzed using regression analysis and AHP method. The interview for specialists and analyzing the results using AHP was to investigate what are the precedence factors to activate the knowledge sharing. Results - First, practicians perceive that knowledge sharing will affect aviation safe positively. Second objective knowledges such as, tower air traffic control procedure of aviation control area, flight principle and structure of aircraft control area, instrument landing system of navigation area, for knowledge sharing of each area were identified. Also the precedence factors such as, knowledge absorbability of personal factor, personal expectation of result of expectation factor, leadership of management of Structure factor, method of knowledge spread of application factor for knowledge sharing were found. Conclusions - Knowledge sharing for practicians and professionals in the aviation area is very important especially from the perspective of safety. However, for various many reasons including the environment of each special area that focusing on their own area, knowledge sharing has not been emphasized. We found that practicians in the area feel that knowledge sharing is necessary and helpful. For it, each practician's active participation is the most important and many ways such as chatting room to share knowledge are to be developed. And the organization culture should be changed to encourage knowledge sharing.

• International journal of advanced smart convergence
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• 제4권2호
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• pp.145-153
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• 2015

Development of IT technology, in combination with the medical area, a number of developments have been made of the digital advanced medical devices, also increased interest in health, sharing of medical information has become increasingly necessary. Standardization for medical information sharing to satisfy these requirements have been studied. However, the medical information system is to build a system independent hospital itself, is difficult to share and exchange medical data with other medical institutions. In this paper, we provide a medical cloud system that can share medical information. Use DBaaS of cloud services. And is an international standard to have a HL7 share information by forming a meta-schema, each of the data transfer, the format of the document oriented data solves the heterogeneity between hospitals. Extracts the required field name of examination information, to exchange information with each of the local information and mapping. Health diagnostic information in the present study and diagnosis through accurate information sharing and exchange is possible ongoing management.

• Geomechanics and Engineering
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• 제16권4호
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• pp.449-461
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• 2018

The load sharing ratio (${\alpha}_{pr}$) of piles is one of the most common problems in the preliminary design of piled raft foundations. A series of 3D numerical analysis are conducted so that special attentions are given to load sharing characteristics under varying conditions, such as pile configuration, pile diameter, pile length, raft thickness, and settlement level. Based on the 3D FE analysis, influencing factors on load sharing behavior of piled raft are investigated. As a result, it is shown that the load sharing ratio of piled raft decreases with increasing settlement level. The load sharing ratio is not only highly dependent on the system geometries of the foundation but also on the settlement level. Based on the results of parametric studies, the load sharing ratio is proposed as a function of the various influencing factors. In addition, the parametric analyses suggest that the load sharing ratios to minimize the differential settlement of piled raft are ranging from 15 to 48% for friction pile and from 15 to 54% for end-bearing pile. The recommendations can provide a basis for an optimum design that would be applicable to piled rafts taking into account the load sharing characteristics.

• 한국멀티미디어학회논문지
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• 제17권4호
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• pp.405-412
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• 2014

Due to the popularity of mobile phones, Peer-to-Peer (P2P) content sharing in mobile phones is highly desirable, especially in a mobile data connection. In addition, there has been an increasing demand for content sharing applications for P2P communication in Android-based smartphones as ubiquitous mobile devices. However, due to wireless network limits, unstable characteristic and restricted storage space, mobile users confront challenges in establishing connections and sharing video frames with other users. To solve this issue, we propose an architectural design and implementation of key frame sharing application that uses Chord, a distributed lookup protocol to establish a content sharing platform for mobile devices, combined with the Chord SDK based on Android. Our proposed system enables users easily to share key information on video data in real-time over a wireless network without manual processing of devices which join or leave the group and cost associated with the 3G/4G network.

• 한국컴퓨터정보학회논문지
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• 제24권5호
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• pp.73-80
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• 2019

In Korea, a budget of tens of trillion won is put into the national R & D project every year. Thanks to these efforts, Korea's ICT industry is gaining global attention. However, there are still a lot of problems that are lacking in terms of the cycle of managing national ICT R&D projects. In particular, the issue of sharing is very insufficient throughout the cycle of the national ICT R&D. In this paper, In this paper, We propose a platfom that can be shared throughout the cycle of managing blockchain-based national ICT R&D projects. This platform we call the Perfect Sharing Project Platform (PSPP). We describe that PSPP can achieve excellent research results through information sharing of project process[1-2]. To support the perfect sharing, this platform uses a new notion of consensus algorithm, called POA (Proof of Atomicity). This platform is suitable for sharing information.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.567-574
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• 2011

The purpose of this paper is to identify factors that influence knowledge sharing and determine the attitudes of quantity surveyors towards knowledge sharing based on the factors. The analysis was based on an online questionnaire survey of Registered Quantity Surveyors from Selangor and Kuala Lumpur. Individualism and collectivism were identified as two major factors that influence attitude towards knowledge sharing. Indicators of individualism include individual attitude, competitiveness, care, incentives and rewards; while the indicators of collectivism are trust, social behaviors and motivation. The findings show that the level of attitudes towards knowledge sharing among quantity surveyors is generally high under enabling organizational environment. However, this is a cautious conclusion as the valid sample on which the analysis is based is relatively small. Willingness to share was found to be highest when incentives and rewards are involved as well as when there is a knowledge management system to promote continuous learning and sharing of knowledge.

• 인터넷정보학회논문지
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• 제23권3호
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• pp.21-33
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• 2022

본 논문은 기업비밀 노출로 초래될 손실을 현격히 줄일 안전 비밀조각 공유 시스템을 제안한다. 본 연구 시스템은 중앙서버 방식이 아닌 효율적 P2P 분산 시스템을 제안한다. 최근 비트코인 유통 시스템도 역시 P2P 분산 방식을 사용하고 있다. 본 연구는 기능이 단순하고 확장성이 높고 전송 효율적인 토렌트 P2P 분산 구조와 그 프로토콜을 사용하여 토렌트 파일조각 대신 임계 샤미르(Shamir) 비밀조각의 보안 유통을 설계한다. 본 연구는 임계 샤미르 비밀조각 공유기법 (Threshold Shamir Secret Sharing Scheme)을 시스템에 적용하고. 동시에 다중 협동장치의 서명기법을 사용하여 안전하고 강력한 다중인증방식의 사용자 인증을 수행한다. 안전한 비밀 데이터 유통도 공개키로 암호화 교환된 임시키의 대칭암호방식의 효율적 암호화로 전송을 한다. 짧은 유효기간의 임시키는 세션 동안 생성되고 세션 마감후 소멸하므로 키 노출에서 안전하다. 특별히 본 제안한 시스템의 특징은 임계 분산기법을 효율적 토렌트 P2P 분산 시스템에 구조적 변경없이 효과적으로 적용한다. 동시에 본 시스템은 효율적인 임시키 대칭암호방식으로 비밀파일 유통에 기밀성을 보장하고 임시키는 공개키 암호방식으로 안전하게 교환된다, 본 시스템은 외부 유출 기기도 사용자로 동적 등록이 가능하다. 이 확장성으로 기밀성과 인증성을 동적으로 등록된 사용자에게도 적용할 수 있다.

• 한국통신학회논문지
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• 제41권12호
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• pp.1707-1714
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• 2016

이 논문은 OFDM (Orthogonal Frequency Division Multiplexing)기반의 이종 네트워크에서 주파수 공존 방식에 따른 시스템 전체의 전송률을 분석한다. 특히, 시간 축 또는 주파수 축 기준으로 직교한 형태의 공존 방식과 비직교 방식의 공존 방식 간의 성능을 비교하였으며, 비직교 공존 방식에서 이종 네트워크의 주파수 공유 또는 겹침(overlapping)이 전체 전송률에 미치는 영향을 분석하였다. 또한 실제 구현 환경을 고려하기 위해 송신단에 HPA(High Power Amplifier)의 nonlinear effect를 추가하여 이 HPA 파라미터에 따른 성능 분석을 하였으며 이에 따른 최적화된 이종 네트워크의 주파수 공존 전략을 제시하였다.

• Journal of Power Electronics
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• 제16권6호
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• pp.2315-2326
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• 2016

This paper discusses the elimination of DC voltage deviation and the enhancement of load current sharing accuracy in multi-terminal high voltage direct current (MT-HVDC) systems. In order to minimize the power line losses in different parallel network topologies and to insure the stable operation of systems, a decentralized control method based on a modified droop control is presented in this paper. Averaging the DC output voltage and averaging the output current of two neighboring converters are employed to reduce the congestion of the communication network in a control system, and the decentralized control method is implemented. By minimizing the power loss of the cable, the optimal load current sharing proportion is derived in order to achieve rational current sharing among different converters. The validity of the proposed method using a low bandwidth communication (LBC) network for different topologies is verified. The influence of the parameters of the power cable on the control system stability is analyzed in detail. Finally, transient response simulations and experiments are performed to demonstrate the feasibility of the proposed control strategy for a MT-HVDC system.