• Journal of Communications and Networks
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• v.12 no.4
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• pp.366-374
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• 2010

Coded cooperation is a promising user cooperation scheme. In this paper, we first propose a novel network-coding-based coded cooperation scheme. When a user decodes its partner's information correctly in the first frame, it transmits the combination of the partner's parity bits and its own parity bits through network coding in the second frame. This is distinct from the classical scheme, where the user only transmits the partner's parity bits during cooperation. We analyze the outage probability of the proposed scheme, and show that it achieves a full diversity order. Numerical evaluations reveal that the proposed scheme outperforms the classical scheme when the inter-user channel is poor, yet is worse when the inter-user channel is strong. Also, the results show that the proposed scheme always outperforms that of no cooperation in various channel conditions while the performance of classical scheme is worse than that of no cooperation with the poor inter-user channels. This means that the performance of the proposed scheme is more stable than the classical scheme and the proposed scheme is more tolerant to the poor inter-user channels. To combine the advantages of the proposed scheme and the classical scheme under different inter-user channel conditions, we propose an adaptive solution. This adaptive scheme enhances the system performance considerably in all channel conditions in spite of the inter-user channel quality, at the expense of only one acknowledgement or non-acknowledgement bit.

• Journal of the Korean Geographical Society
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• v.40 no.4 s.109
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• pp.402-415
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• 2005

This study inquired the features of restructuring of shipbuilding industry and structure of community cooperation. The Sinhyeon-eup region has experienced rapid changes as a large shipyard location. Prior to Korea, Japan has developed the cooperation of company-community-residents relationships and the reorganization of location systems through division and accumulation system. The restructuring of shipbuilding industry in Korea have focused on the improvement of business environment. So they have not been efficiently settled in the accumulation and the cooperation structure between company and region. Japan established the organic cooperation structure of company and community before the large restructuring, while the shipbuilding industry city of our country commenced it with the crisis of community by the restructuring. In the Sinhyeon-eup region, The connecting ring among the production sections of a core company in center is established. However the structure of community cooperation is weak. The structure of community cooperation as local governance consist of company, pubic institution, local residents, and regional expert. This structure can be a rational channel in which it can not only strengthen the cohesion of the community, but also solve the present questions of the industrial city.

• Journal of Digital Convergence
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• v.11 no.10
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• pp.189-201
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• 2013

With the rapid development of information and communication technologies, the boundaries of markets become blurred, and with the increasing uncertainties and risks of the future, competition among global companies becomes more intense. Accordingly the enterprises are considering or already taking cooperation strategies with enterprises in a competitive relationship as well as cooperative enterprises in a high correlation with one's own company as a plan to actively cope with changes in management environments. Thus, a cooperation strategy is an important element for the strengthening of the competitiveness of enterprises as well as the survival of the enterprises. However most preceding studies on cooperation strategies focus only on the effects of the properties of cooperation enterprises on the selection of cooperation partner enterprises and the business performance of the enterprises. Therefore, this study carried out an empirical analysis of the motivation and purpose of the construction of cooperation strategies by enterprise and what differences there are in factors to which importance is attached in selecting partners. In addition, this study analyzed the differences depending on the size: large and small enterprises and depending on the industry: electronics and chemical industries during AHP using a pairwise comparison technique.

• Journal of Digital Convergence
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• v.17 no.12
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• pp.77-82
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• 2019

In this paper, we propose a new industry - university collaboration plan through the analysis of the present state of industry-academia cooperation and government support projects, and analysis of major overseas cases. The following is the plan for activating the new crop cooperation. First, it is necessary to strengthen the innovation of education system and establishment of new education course based on future demand through future-oriented industry-university cooperation. Second, active industry-academia cooperation should stimulate entrepreneurship education and entrepreneurship based on university resources. Third, it should act as an anchor of regional innovation by actively cooperating with local innovation entities. It is necessary to develop an industry-university cooperation model that can generate profits and contribute to university finance.

• Land and Housing Review
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• v.12 no.4
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• pp.15-30
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• 2021

Korean urban development cooperation is gradually expanding into Latin America and the Caribbean (LAC) region, but strategies to encourage domestic market players to participate are insufficient. This paper investigated the Colombian urban planning system, urban development projects, and Korean projects in Colombia, which leads to implications for international cooperation in LAC. This research, first, compares the national and regional urban planning systems of Colombian major cities, Bogotá and Medellín. Second, case studies are carried out with a land readjustment project, a Macro project for large-scale public rental housing supply, and urban development cooperation between Korea and Colombia. By doing so, the role and the directions for Korean urban development cooperation with LAC such as Colombia are discussed and proposed. The findings suggest, first, aid projects through Official Development Assistance (ODA) should establish urban networks in recipient countries. Second, it is necessary to understand the financing structure for urban development cooperation projects that are different from infrastructure projects. Third, the successful case of urban development cooperation should be demonstrated by making the development period and size optimal and manageable.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.9
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• pp.3271-3276
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• 2010

Preparing to reclaim the wartime operational control of South Korea's armed forces, Korea Military have to embattle the right capability in relation to conduct of the war. Although Korea Military are operating Joint Exercise Simulation Training System, they are having a lot of difficulties because of interoperability according to a joint exercise with USA military and pursue an independent korea military models. Therefore this study analyzes technical problems and proposes some measures to establish Exercise Simulation System out of regard for South Korea's self defense.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.10
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• pp.3998-4004
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• 2010

This study investigated the agents for self-healing system that could be developed to prevent UST(underground storage tank) from leaking. The system involves short range wireless communication to locate a leakage. Four commercially available silicons are arbitrarily chosen to evaluate suitability as a self-healing agent through a series of laboratory experiments. finally the experiments are simulated using computational Fluid Dynamic Program.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.3
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• pp.1336-1340
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• 2011

In this paper, the efficient prevention of cross talk technique for basically avoiding the confusion problem between the overlapped ubiquitous network of the other object is developed within the same area. The intelligent unified wireless network remote meter reading system of the ubiquitous ZigBee base is developed based on this technology. Therefore, in this paper, each meter reading equipments managed the information of its own adjacent ZigBee channel. The intelligent network system steadily transmitting data a relay was developed based upon this information in each region through the flexible channel conversion technique.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.1
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• pp.108-113
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• 2008

A proposed system can decrypt each contents block through a double buffer algorithm which can continually buffer contents by dividing a multimedia contents into some blocks and provides more improved method of encryption than existing system by being not capable of decrypting the whole multimedia contents if one key is exposed. Also, using digital signature and public encryption algorithm for mutual authentication between systems, this paper proposes the system which sends and encrypts symmetric keys for contents encryption through SOAP messages.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.12
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• pp.3645-3652
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• 2009

Most important factor for successful operation of collaborative project, which is a project based curriculum, is systematic and rational assesment. In this paper, we design and implement multidimensional performance assessment support system which can overcome simplicity of result-oriented evaluation. In the proposed system, learner can diagnose problems and improve those by oneself. We design the system satisfying both professor and student about evaluation results through evaluating total course of collaborative project.