• Journal of Korean Society of Transportation
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• v.8 no.1
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• pp.119-128
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• 1990

교통자산과 같은 내구재는 일정 기간 동안의 수명을 가지게 된다. 이 기간 동안에 내구재는 어떠한 형태로 소비되어 지고 이에 따라 내구재는 효율성을 잃어 간다. 내구재를 효율적으로 사용하기 위해서는 적절한 관리를 필요로 한다. 본 연구는 내구재를 효율적으로 사용하기 위해 필요한 관리비용의 동적형태를 이론적으로 고찰한 다음, 미국에서의 업무용 비행기의 관리비용자료를 사용하여 경험적인 결과를 제시한다. 본 연구의 결과는 다음과 같다. (1) 관리비용은 시간이 감에 따라 줄어든다. 그러나 관리비용의 잠재가격(Shadow Price)에 대한 비율은 여러 가지 외적변수들에 결정된다. (2) 미국에서의 업무용 비행기의 시장가격에 대한 관리비용의 비율은 시간이 감에 따라 늘어난다.

• International Journal of Human Ecology
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• v.5 no.1
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• pp.45-58
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• 2004

It has been repeatedly reported that the quality and quantity of relationships with other people moderate responses to stress and influence health and adjustment. This evidence has stimulated research on the characteristics of social support. In this review, the definition of social support for parents will be discussed. This study also will connect the concept of social support with family theories such as the human ecology theory and the developmental contextualism. The findings from previous studies will be summarized to examine the effects of social support on parenting and to understand the social support within a cultural context.

• Proceedings of the KIEE Conference
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• 1997.07c
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• pp.988-990
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• 1997

In this paper, the design automation system is proposed, which adopts the expert system technology and fuzzy decision making technology. It has a capability of selecting the most desirable protective devices for the industrial power systems.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.21 no.45
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• pp.253-263
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• 1998

This study presents a method of realizing the theoretical results of Demyanov in practice on a computer in order to produce a kind of constructive evidence for his theory and a practical method of getting numerical results for quasi-differentiab1e optimization problems which may arise in industry and science. A practical result for a restricted nondifferentiable optimization problem is experimented with a simle example.

• Molecules and Cells
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• v.27 no.4
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• pp.491-492
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• 2009

We present the result of our research on the tumorigenic ability of single cell clones isolated from an aggressive murine breast cancer cell line in a matched allografting mouse model. Tumor formation is basically dependent on the cell numbers injected per location. We argue that in vivo tumor formation from single cell clones, isolated in vitro from cancer cell lines, may not provide conclusive evidence to disprove the cancer stem cell (CSC) theory without additional data.

• The Journal of Korean Academic Society of Nursing Education
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• v.17 no.3
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• pp.464-477
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• 2011

Purposes: The purpose of this study was to identify recent trends of experimental research by analyzing doctoral dissertations in all colleges of nursing in Korea. Methods: The areas of research, the content, methodological and intervention characteristics used in this study were explored in experimental research on doctoral dissertations (n=132) published from 2006 to 2010. Results: In the issues of research, practice/clinical issues were most frequently used. As to outcome measurement, physiological variables increased more than psychological/emotional variables. Most theory applied in the research was taken from other disciplines, and nursing theory was only Roy's adaptation theory. A large majority of the research was quasi-experimental designs and the number of true-experimental designs was very low. In more than half of the dissertations, internal validity was not described, and the described external validity rate was very low. There were more single intervention programs than bundle ones and education/exercise programs were most frequently used as the source of intervention. Conclusion: Doctoral dissertations need to increase and encourage more high quality experimental research to expand nursing knowledge and to develop evidence based nursing practice.

• 한국벤처창업학회:학술대회논문집
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• 2017.04a
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• pp.49-49
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• 2017

This paper provides theory and evidence on how venture capital's (VC's) investment influence on new venture (NV) performance. Despite the wealth of research on the relationship between VC's investment and NV's performance, there are conflicts about whether the VC's investment can contribute to the performance of NV and NV's market value or not. For the accurate measure of the investment effect from VC, this research explored how the venture capital's investment in each development stage affects the NV's performance. The research was based on signaling theory and the theory of information asymmetry and looked for which factors affect a NV's performance. Using a sample of 364 firms went to public from 2000 to 2007, we find NV performance increases as NV acquires initial investment of VC in the early stage of development. While NV's potential absorptive capacity moderates the main relationship positively, we find no indication that NV's realized abortive capacity and NV's reputation have significant effect on the main relationship as moderators.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.8
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• pp.817-826
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• 2016

The importance of common life safety is getting growth with modern society progress. This paper shows the extended way of assessment of danger that outcomes better result than the previous assessment based on crime frequency assessment. The assessment of this paper involves time, illusion degree, floating population and the personal condition. The evidence theory is not beneficial when the number of component increases, the assessment is more complex than before. This research solves the problem through the fuzzy theory adoption. This paper shows more advanced result that can express better danger awareness and get the adjective expression.

• Journal of Korean Medical classics
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• v.30 no.4
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• pp.109-121
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• 2017

Objective : The subject of this paper's study is the annotation of Suwenliuqixuanzhumiyu, which is a book regarding the theory of yunqixue, as discovered in so-called Huangdineijingsuwenyipian or Yipian. The purpose of this paper is to ponder upon the relationship of the two texts, and, furthermore, review the relationship between the chapter of Suwen about yunqixue and other texts. Method : Annotations are collected and reviewed based on the theory of yunqixue, and much attention is given to the analysis of estimating in which period Yipian was written. Result : The annotation of Xuanzhumiyu found in Huangdineijingsuwenyipian coincides with that of the currently existing sentence in Suwenliuqixuanzhumiyu. With the publication period of Suwenliuqixuanzhumiyu as evidence, it seems that there is a lot of overlapping between that and Xuanzhumiyu since it was annotated in Huangdineijingsuwenyipian. However, since Huangdineijingsuwenyipian seems to have annotated a part of Xuanzhumiyu, it seems that it was written in a slightly later period. Conclusion : The two books are published in a relatively early period, and they are assessed to be important research data for the theory of yunqixue since they include within them clinical needle techniques and other matters that are not found in the chapter of Suwen about yunqixue.

• Knowledge Management Research
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• v.5 no.2
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• pp.67-98
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• 2004

New knowledge is created through the dynamic interaction of knowledge that depends largely on a social context within the organization. Social processes influence the nature of knowledge and learning. This paper is rooted in the concept of social capital. Social capital theory emphasizes the importance of social relationship. Using social capital theory, this paper suggests three factors that must be satisfied for the development of knowledge combinative capability. The first factor is that the opportunity exists to make the exchange or combination of knowledge. The second factor is that people is motivated for the creation of new knowledge. The third factor is that people must share the common knowledge. This paper examines the change case of KIPO (Korean Intellectual Property Office). This case provides evidence that the three factors can develop social relationship, and build knowledge combinative capability. The man finding from this research is that social factors play an important part in the creation of knowledge, and processes of knowledge exchange and combination heavily rely upon social patterns, practices and processes in ways which emphasize the value and importance of collective action and knowledge sharing. This research may have several implications for the development of the knowledge creation mechanisms.