• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.4
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• pp.1675-1683
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• 2011

The cluster project in Korea has restructured to develop the cluster into a core engine for the pan-regional development policy and connect industrial parks across the country. Korean government has made great efforts to attract research institutes, support organizations and universities in industrial parks and enhance growth potential through a close cooperation network. Especially A mini-cluster is an integrated group joined by companies, universities and research institutes and support organizations. It has been developing business opportunities through industry-academia-research cooperation and providing assistance through network activities. Mini clusters have implemented a variety of network activities. This paper proposed three strategies to accomplish self-sustainable growth of mini-clusters. First of all, mini-cluster needs to provide useful contents that can attract the participation of members. Then it is necessary to promote mini-cluster initiative. Finally, mini-clusters need to make up a cooperative culture.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.22 no.1
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• pp.24-29
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• 2011

Comparing conventional one-way relaying, two-way relaying scheme with network coding can achieve high throughput by reducing the transmission time. Coded cooperation protocol, which is a algorithm that uses coding on physical layer, can achieve high reliability. In this paper, we propose coded cooperation protocol over two-way relay network. Simulation results show proposed protocol has better performance in terms of reliability and throughput compare with conventional amplify and forward protocol. Also, with same throughput, proposed protocol has better performance in terms of reliability compare with the conventional hybrid decoded and forward protocol.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.10 no.9
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• pp.4145-4164
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• 2016

Energy harvesting is an increasingly attractive source of power for cellular networks, and can be a promising solution for green networks. In this paper, we consider a cellular network with power beacons powering multiple mobile terminals with microwave power transfer in energy beamforming. In this network, the power beacons are powered by grid and renewable energy jointly. We adopt a dual-level control architecture, in which controllers collect information for a core controller, and the core controller has a real-time global view of the network. By implementing the water filling optimized power allocation strategy, the core controller optimizes the energy allocation among mobile terminals within the same cluster. In the proposed green energy cooperation paradigm, power beacons dynamically share their renewable energy by locally injecting/drawing renewable energy into/from other power beacons via the core controller. Then, we propose a new water filling optimized green energy cooperation management strategy, which jointly exploits water filling optimized power allocation strategy and green energy cooperation in cellular networks. Finally, we validate our works by simulations and show that the proposed water filling optimized green energy cooperation management strategy can achieve about 10% gains of MT's average rate and about 20% reduction of on-grid energy consumption.

• The Journal of the Korea Contents Association
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• v.21 no.4
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• pp.404-413
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• 2021

Small and medium sized firms(SMFs) would form the technology cooperation network with external firms and institutions of owning a variety of technology and knowledge, and according to resource based theory, forming cooperation network is another resource in uncertain business environment. Unlike the related studies, this study examined the effect of individual cooperation activity on innovation performance for SMFs located in Taegu region, and investigated the moderating effect of technology capability in the relationships between individual cooperation activity and innovation performance. In the empirical results, only cooperation research development positively affected innovation performance, and technology capability moderated the relationships between individual cooperation activity and innovation performance. The empirical findings imply that SMFs should do cooperation research development as an intangible asset to overcome the obstacle of development resulted from limited resources, and that SMFs should increase the impact of individual cooperation activity as promoting technology capability.

• Transactions of the Korean hydrogen and new energy society
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• v.33 no.5
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• pp.470-498
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• 2022

Recently, the world has been considering hydrogen energy as the primary energy transition means to achieve carbon neutrality by 2050. In order to achieve the goal of reducing greenhouse gas emissions, Korea is also promoting a clean hydrogen economy. However, it is necessary to introduce various clean hydrogen from overseas so that the projected demand can not meet the domestically produced. For this study, we conducted the policy comparison approach between countries other than the generally considered technical and economic approaches. The finding proposes the direction of bilateral cooperation for a strategy of securing overseas clean hydrogen from a geopolitical perspective. Germany was a target country for the policy comparison since it has a high proportion of manufacturing, like Korea, and is taking the lead in the renewable-based energy transition policy. According to the survey and analysis of the policy establishment status and new projects of the two countries, Germany is promoting bilateral international cooperation in the hydrogen area with about 33 countries based on 7 types of activities. In comparison, Korea is involved in bilateral cooperation with about 12 countries on relatively few activities. Among the types of bilateral cooperation, R&D cooperation with advanced countries for hydrogen technology was a common activity type. Germany preemptively promotes cooperation for demonstration and commercialization, considering geopolitical means and strengthening manpower training and assistance on policy and regulation to preoccupy the market for the future. Therefore, it is necessary to consider establishing a network of an entire life cycle of supply and demand network that links the future market with securing clean hydrogen considering the geopolitical distribution. To this end, Korea also needs to expand bilateral cooperation countries by activity type, and it seems necessary to seek various geopolitical-based bilateral cooperation and support measures for developing countries to diversify the supply sources of hydrogen.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.2
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• pp.280-286
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• 2009

The NGN(Next-Generation Network) structure has been considered from various points of view as all If wireless-wired integration network and its performance is one of the main issue in these days. In this paper, various wired and wireless integrated networks with voice service are designed and simulated to obtain problems and factors affects the network performance using OPnet simulator. The characteristics only showed in the wired and wireless integrated networks are measured and analyzed compared with the single networks such as a wired or wireless networks. Especially, in the wired and wireless integrated networks showed degrading performance even if there are few transmissions in the network and furthermore, the various networks of increasing numbers of the nodes and transmission are simulated and evaluated.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.2
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• pp.379-387
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• 2008

We proposed models that can implement RFID/USN in terms of teaching-learning part, facility management part, teacher and student management part in primary and secondary school in this study. To support these models in school network, we also proposed a new wired network model and a new wireless network model. A new wired network model is derived from existing wired school network that can apply to all sorts of models presented above. And also a new wireless network model is derived from existing wireless LAN that can solve space restriction problem. We calculated communication bandwidth according to school size and network capacity.

• 한국지구물리탐사학회:학술대회논문집
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• 2003.11a
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• pp.3-6
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• 2003

Fusion technology is a key to maximize innovative potential of geoscience for many challenging issues today that require integrated multi-disciplinary approach. Successful fusion technological advance can be achieved when interdisciplinary cooperation is firmly established. In order to establish firm the context of inter-disciplinarity that is still feeble, it is urgent to continuously develop geoscientific models and systematic infra for interdisciplinary cooperation such as well-prepared geo-spatial database and knowledge base network that can support multi-lateral cooperation between multiple disciplines and multi-phase international cooperation.

• Journal of the Korea Convergence Society
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• v.9 no.4
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• pp.201-208
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• 2018

The purpose of this study is to analyze the demand for the science park development as a regional innovation hub to strengthen the internationalization capacity of local governments and to promote international exchange and cooperation based on public - private partnerships. For this, i)the main areas of interest and expectation for international exchange and cooperation, ii)preference for major projects, and iii)demand for development cooperation projects were identified, and it was figured out iv)what the core program is for cities of developing countries through network analysis using the UCINET program. Through these analysis, it was found that cities in developing countries wanted exchange and cooperation projects for the development of industrial and economic sectors. Especially, they wanted to develop industrial infrastructures and transfer advanced systems to foster regional strategic industries. In addition, the demand for the development of science park as a development cooperation project was found to be significant. Therefore it could be inferred that cities in developing countries want to develop a science park as a platform for regional development and industrial development, and to acquire development experience of advanced cities through continuous exchange and cooperation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.8
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• pp.5219-5226
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• 2014

This paper proposes an improved scheme of pedestrian position information system using neural network theory in a GPS-disabled area. Through a learning/obtaining gait pattern and step distance about walk, run, duck walk, crab walk and crawl, the position estimation error could be minimized by rejecting the inertial navigation drift. A portable hardware module was implemented to evaluate the performance of the proposed system. The performance and effectiveness of the suggested algorithm was verified by experiments indoors.