• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.744-745
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• 2015

Since the G20 summit in 2011, South Korea who was dependent on foreign energy needs of 97% receives natural gas from Russia from 2015 to 30 years, but South Korea is a situation of scarce experience and skills of pipeline project in permafrost area. In this study, we kept the target for analyzing the data and information flow of the pipeline projects in permafrost area, and the ultimate goal is set to developing the hierarchy structure of design and construction data for an efficient administration of the project. In order to develop that structure, Configuration Management was introduced and through this method, it is expected to be used to build the overall information management system in O&M phase.

• Management Science and Financial Engineering
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• 제3권1호
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• pp.15-38
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• 1997

In a flexible manufacturing system, a cell controller is able to identify and evaluate a number of alternative decisions to meet the objectives set by the factory level controller. In this paper, a Petri net-based cell controller is presented to accomplish this task. A static model is developed by using the Integrated Computer Aided Definition(IDEF0) method to represent clear functional relationships among the objects of the system. Based on the static model, two Petri net models are developed for the physical part flow and for the information flow. Multiple decision alternatives are generated from the physical part flow model and are synchronized with the information flow model for execution of the selected alternative.

• Spatial Information Research
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• 제8권1호
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• pp.131-140
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• 2000

하천의 흐름해석 분야에서는 모형이 요구하는 입·출력 자료의 구성이 복잡할 뿐만 아니라 흐름의 공간적 분포특성 도시가 매우 중요하지만 지금까지 체계적인 자료관리가 이루어지지 않은 실정이다. 본 연구에서는 등고, 하천, 표고, 경계 및 하도단면 등으로 구성된 국가지리정보시스템과 연계된 데이터베이스를 구축하는 방법과 등간격 하도단면 자료를 구축하는 방법을 제안하였다. 연구대상지역은 팔당댐 하류에서 인도교 지점에 이르는 한강구간을 선택하였다. 구축된 데이터베이스는 연구대상지역의 과학적인 하천유량 관리에 유용하게 이용될 것이다.

• 한국건설관리학회논문집
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• 제5권1호
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• pp.133-139
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• 2004

최근 도심지 고층건축공사가 증가하면서 건설자원의 효율적인 관리가 중요시되고 있으나 현재 국내 건설현장에서 건설자재의 공급에 대한 많은 문제점을 가지고 있다. 공정과 연계되지 못한 자재의 조달 및 양중은 현장 내 재고 증가 및 작업지연을 유발하며, 복잡한 정보전달 체계는 관련 작업의 의사결정의 지연의 원인으로 작용하여 결과적으로 공사기간에 절대적인 영향을 미치고 있다. 따라서 공정진행을 고려한 조달 및 양중작업에서 각 공사담당자간의 효율적인 정보전달 체계의 구축은 효과적인 공사수행을 위해 필수적이다. 본 연구에서는 사례조사를 통해 건설자재의 조달 및 양중작업의 문제점을 분석하여 가치흐름분석을 통해 구체적인 낭비요소를 추출한 뒤, 공사참여자간의 의사소통 체계를 구축 및 양중계획 업무흐름 개선방안을 제시하였다. 개선방안은 web을 기반으로 한 조달 및 양중시스템의 전반적인 체계로서 활용될 것이다.

• 대한안전경영과학회지
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• 제12권3호
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• pp.295-302
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• 2010

Nowadays, due to the development of computers and the information and communication technology, data processing and transmission is made very vastly and fast. The development of the technologies bring many changes and revolutions to the life of ordinary people. Although, e-Business grows continuously, it is in experimental stage in domestic area because of limits of infrastructure. Also, in spite of explosive growth of internet, the research on the internet has not been fully studied yet. The objectives of this study are that how service consumers perceive the flow of e-Business, and that what effect the makes on their satisfaction and re-purchase intention. This means that the research enables a marketing manager to take the meaning of comparative weight among the components of e-Business flow, and to provide very useful information to establish marketing strategies which are close to the consumers.

• 한국정보시스템학회지:정보시스템연구
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• 제16권4호
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• pp.1-31
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• 2007

The current study investigates the relationship of antecedents of flow, organizational commitment, knowledge sharing, information technology usage for knowledge sharing, and job satisfaction of organizational employees. This study analyze the effects of psychological states of employees both on affective states of them and on knowledge sharing by applying the internet-based flow theory to knowledge sharing. The antecedents of flow are found to have positive effects on organizational commitment. In addition, it is found that organizational commitment has a positive effect on knowledge sharing, information technology usage for knowledge sharing, and job satisfaction. While it is found that knowledge sharing has a positive effect on job satisfaction, it is found that information technology usage for knowledge sharing does not have an effect on job satisfaction, but have a positive effect on knowledge sharing. The result of this study would not only provide significant insights to knowledge management researchers and practitioners but also contribute to applying the flow theory to knowledge sharing.

• 경영과학
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• 제23권2호
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• pp.41-57
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• 2006

The purposes of this research are to identify causalities among flow and customer loyalty In Chinese online games, and to identify the factors by which flow are influenced. This research tests the model with Chinese on-line game users and compare this result with Korea and Japanese results which were conducted by Lee's research. These implications are thought to be helpful for Korean online game companies to understand the Chinese online game user and to develop the penetration strategies. The results indicated that significant Path coefficients to flow were the convenience of operator, the provision of information, the reality of design. The results indicated that significant path coefficients to customer loyalty were the involvement of virtual community and flow. The involvement of virtual community to flow was not significant but to customer loyalty was significant. The provision of information was negatively influenced on flow. The result of comparison indicated that the path coefficients were different among nations. Korea online game companies need to develop the indigenized online game and to Provide the information to their Chinese partner correctly and quickly.

• 경영과학
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• 제31권3호
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• pp.77-94
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• 2014

This study empirically investigated the relationships among inter-organizational cost management (IOCM), cooperation with suppliers, information exchange between partners, inter-organizational learning, control integration, and the supply-chain performance of a firm. The results showed that the adoption of IOCM positively affects the collaboration between buyers and suppliers, which also leads to the increased information flow between them. According to the results of this study, it was found that inter-organizational information flow causes inter-organizational learning, and this learning contributes to the improved supply-chain performance. In this study, the positive effects of the cooperation with suppliers through IOCM on the control integration in supply-chains were not empirically confirmed. However, the impact of IOCM on control integration was significant and positive. Finally, the fact that the enhanced control integration can improve the supply-chain performance of a firm was empirically demonstrated.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2003년도 학술대회지
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• pp.442-445
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• 2003

최근 도심지 고층건축공사가 증가하면서 건설자원의 효율적인 관리가 중요시되고 있으나 현재 국내 건설현장에서 건설자재의 공급에 대한 많은 문제점을 가지고 있다. 공정과 연계되지 못한 자재의 조달 및 양중은 현장 내 재고 증가 및 작업지연을 유발하면, 복잡한 정보전달 체계는 관련 작업의 의사결정의 지연의 원인으로 작용하여 결과적으로 공사기간에 절대적인 영향을 미치고 있다. 따라서 공정진행을 고려한 조달 및 양중작업에서 각 공사담당자간의 효율적인 정좌전달 체계의 구축은 효과적인 공사수행을 위해 필수적이다. 본 연구에서는 사례조사를 통해 건설자재의 조달 및 양중작업의 문제점을 분석하여 가치흐름분석을 통해 구체적인 낭비요소를 추출한 뒤, 공사참여자간의 의사소통 체계를 구축 및 양중계획 업무흐름 개선방안을 제시하였다. 개선방안은 web을 기반으로 한 조달 및 양중시스템의 전반적인 체계로서 활용될 것이다.

• Journal of Communications and Networks
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• 제18권5호
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• pp.818-825
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• 2016

Network management and anomaly detection are challenges in high-speed networks due to the high volume of packets that has to be analysed. Flow-based analysis is a scalable method which reduces the high volume of network traffic by dividing it into flows. As sampling methods are extensively used in flow generators such as NetFlow, the impact of sampling on the performance of flow-based analysis needs to be investigated. Monitoring using sampled traffic is a well-studied research area, however, the impact of sampling on flow-based anomaly detection is a poorly researched area. This paper investigates flow sampling methods and shows that these methods have negative impact on flow-based anomaly detection. Therefore, we propose an efficient probabilistic flow sampling method that can preserve flow traffic distribution. The proposed sampling method takes into account two flow features: Destination IP address and octet. The destination IP addresses are sampled based on the number of received bytes. Our method provides efficient sampled traffic which has the required traffic features for both flow-based anomaly detection and monitoring. The proposed sampling method is evaluated using a number of generated flow-based datasets. The results show improvement in preserved malicious flows.