• The Journal of Society for e-Business Studies
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• v.17 no.2
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• pp.23-38
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• 2012

The purpose of this study is to find factors affecting knowledge sharing activities which have two aspects-quantity and quality. We surveyed the members of a virtual community of practice called "UPOW.com". It is dedicated to sharing knowledge about job related problems, questions, experience of educational official. This study derived factors from social cognitive theory and social capital theory. The findings of the study can be summarized as follows; first, quality of shared knowledge and quantity of knowledge sharing both have positive effect on knowledge utilization. Second, individual factors and social relations have positive effect on quantity of knowledge sharing. However, individual factors' effects on quantity of knowledge sharing are not significant. These results have academic implications to find factors affecting both side of knowledge sharing. Also these finding will give an insight to develop virtual community of practice for an organization's sustained competitiveness.

• Journal of Korea Technology Innovation Society
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• v.11 no.2
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• pp.219-240
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• 2008

This paper aims to suggest a policy for biological resource based on a comprehensive understanding on biological resources. Biological resources are different from traditionally recognized viable organisms (Biodiversity) in ecosystems. Biological resources are culturable and replicable resources of living organisms such as tissues, cells and genes. Moreover, biological resources include human-derived biological materials. Biological resources is not simply a matter of science and technology. Biological resources should be dealt with as national resources. There are many international issues regarding biological resources, such as intellectual property rights (IPRs), safety on handling and distribution, material transfer agreements (MTAs) for mutual benefits and biological standards. Ethical debates are also being raised because biological resources are related with human-derived biological materials. Every nation has tendency to adopt its government policies to strengthen its sovereignty on biological resources and international cooperation. In addition, international linkages are essential for providing enhanced worldwide accessibility to biological resources. Japan has shown several international initiatives in the field of biological resources. Korea has just begun to design appropriate policies for the use and R&D of biological resources. Therefore, this paper suggests the following needs: 1) policy at the national level beyond the interests of researchers, 2) inter-ministerial coordination across government ministries, 3) expansion of scope and size of each BRC (Biological Resource Centers), and 4) building networks and systems such as national information center, representative centers by field, and each BRC.

• Journal of the Korea institute for structural maintenance and inspection
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• v.22 no.2
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• pp.59-67
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• 2018

The interference between the lattice bar of existing LB-DECK and the bars placed at site degrades the constructability, which is pointed as a problem. HB-DECK simplified the shape of lattice bar, and converted the direction of main rebar direction to the distributing bar direction, and installed the rib on the underside of HB-DECK to increase the stiffness. The purpose of this study is to verify the structural performance of HB-DECK and cast in place concrete slab. The static load test was conducted to verify the structural performance according to Korean highway bridge design code(2015) and composite behavior of HB-DECK with Cast in Place Concrete Slab. Three-dimensional finite element analysis was carried by MIDAS FEA, and analyzed to compare the result of analysis and experiment. At a result, composite behavior was examined between HB-DECK and cast in place concrete slab, and structural performance satisfied Korean highway bridge design code(2015).

• Journal of KIISE:Databases
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• v.28 no.4
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• pp.632-642
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• 2001

The nearest neighbor query is an important operation widely used in multimedia databases for finding the object that is most similar to a given object Most of techniques for processing nearest neighbor queries employ multidimensional indexes for effective indexing of objects. However, the performance of previous multidimensional indexes, which use N-dimensional rectangles or spheres for representing the capsule of the object cluster, deteriorates seriously as th number of dimensions gets higher, In this paper we first point out the fact that the simple representation of capsuler incurs performance degradation in processing nearest neighbor queries. For alleviating this problem,. we propose(1) adopting new axis systems appropriate to a given cluster (2) representing various shapes of capsules by combining rectangles and spheres, and (3) maintaining outliers separately, We also verify the superiority of our approach through performance evaluation by performing extensive experiments.

• Applied Chemistry for Engineering
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• v.32 no.6
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• pp.607-612
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• 2021

Silicon (Si) is one of the promising active materials to replace the widely used graphite because of its low electrochemical potential and high theoretical capacity. However, Si anodes still face in problems with the huge volume expansion and continuous decomposition of the electrolyte during repeated charge and discharge processes. To address these issues, a cross-linkable waterborne polyurethane (CWPU) based on a bio-oil, castor oil, was prepared and reacted with Tris(2,3-epoxypropyl) isocyanurate (TGIC) linkers, resulting in the formation of a mechanically robust 3D network structure. Si anodes fabricated with the CWPU-TGIC exhibited stable cycling performances and excellent discharge capacities. The results revealed that the CWPU-TGIC binder efficiently accommodates the large volume change for Si anode during charge and discharge cycles. Overall, the eco-friendly binder shows great promise in improving the electrochemical performances of Si anodes.

• Journal of Cadastre & Land InformatiX
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• v.51 no.1
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• pp.125-136
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• 2021

Recently, Unmanned Aerial Vehicle utilization and image processing technology for remote sensing have diversified remarkably with Orthophoto and Digital Surface Model. In particular, It uses more application fields such as spatial information analysis and hazardous areas as well as land surveying. This study analyses the accuracy of the coordinate on Orthophoto and DSM height on slope area with high and low differences by using UAV images. As the result of this study, in the case of GCP on 2D orthophoto, the location error was not produced significantly. The vertical position of the DSM showed the highest accuracy when the height difference between GCPs is under 30m(RMSEZ=0.07m). The location of the GCPs was divided into approximately 10m, 20m, 30m, and 40m with analysis for each of the eight points of GCP and inspection points in general. This study expects that producing both horizontal accuracy of Orthophoto and vertical accuracy of DSM using UAV on the sloped area which similar to this research area will help in spatial information fields.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.2D
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• pp.259-267
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• 2008

Nowadays PMIS (Project Management Information System) based on web is widely applied to communication, collaboration and community in construction jobsite for various organization such as subcontractors, general contractor, engineering company, supervisors and client. However, individual PMIS in jobsite is prone to be troublesome issue for integration and exchange of information regarding project management in corporate and may result in conflict of data application. The main reason should be lack of information strategy plan such as company master plan for information. This research shows a critical success factor that a big construction company of Korea establishes procedure and method for information strategy plan. In addition, It is to suggest how to be implemented PMIS architecture and execute business process innovation in corporate level. This research expects contribution that many construction companies reduce mistakes to be implemented management information system and to optimize system in corporate level.

• The Journal of the Korea Contents Association
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• v.9 no.12
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• pp.777-786
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• 2009

In recent, the ships of the Republic of Korea have been suffered from acts of piracy at the seas. With the increase of the threats from the acts of piracy and armed robbery against ships, some of the countries have dispatched their navy warships to the international waters and to carry out military operation against the pirates. However, the total eradication of the piracy has not been achieved due to the lack of international cooperation and the limitation of the international maritime convention itself. In addition, the absence of counter-measures to be taken by the ships itself including the employment of the professional maritime security forces should not be overlooked. In this connection, this paper examined the reality of the piracy together with armed robberies at the seas and the problems in the response were also analyzed. Based on the research, it suggested some possible measures with special reference to the private security. The limitation of this paper is that it only focus on the aspect of the private security. In this paper, the cooperation among the countries according to the maritime convention and internationally accepted norms and practices. To achieve the goals of this paper, through the comparative review of the related literatures, the practical measures applicable to the prevention of the piracy were suggested.

• Korea journal of population studies
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• v.20 no.2
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• pp.135-159
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• 1997

Education effect on women's participation in the labor market has been known to be small in Korea. Then, the meaning of women's education as human capital needs to be questioned. Both the increasing desire for working among women and the criticism to under-utilization of women's education in the labor market reflect that women's education is surely perceived as human capital. However, women's education dose not seem to function well as human capital in the labor market. According to previous studies, it is pointed out that educational effect on women's participation in the labor market is weak but the effect on earnings is evident. There were few attempts to evaluate economic returns to women's education over the life-cycle analyzing both working and non-working women. Considering that the economic behaviors of women in nonagricultural sector have changed little until the mid-1980s, I tried to examine the meaning of education as human capital over the women's life cycle using cross - sectional data. This study shows that the educational effect on women's participation in the labor market does not exist and the working period is very short. Although the educational effect on earnings among working women is clearly shown, it tends to limited to younger women. Despite the educational effect on earnings among younger women, the meaning of education as human capital among Korean women does not hold well due to short working period and the low participation of the educated in the labor market.

• Korean Journal of Social Welfare
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• v.51
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• pp.287-310
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• 2002

The purpose of this study was to investigate how early retirees spent their days and how daily life was experienced. In order to cover as many aspects as possible of the subject, this study examined sources of life satisfaction/dissatisfaction. Data were drawn from in-depth interviews in which 101 early retirees residing in Seoul. The Majority of early retirees in this study were at least somewhat dissatisfied with their daily life. Content analysis of reasons for life satisfaction/dissatisfaction revealed that the sources were categorized into 6 categories and 66 specific sources. Analysis of sources of life satisfaction revealed that early retirees mentioned most frequently as their sources of life satisfaction in this order: subjective emotions, family relations, stability of economy, positive attitude on retirement. Analysis of sources of life dissatisfaction revealed that life dissatisfaction was intimately connected with the loss of work role, family, unstability of economy, and ill preparation for retirement. Implications for macro and micro alternatives to support early retirees were provided.