• 한국재료학회지
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• 제28권7호
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• pp.381-390
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• 2018

Shape memory alloys(SMAs) have revolutionized the material engineering sciences as they exhibit exclusive features i.e. shape memory effect(SME) and super-elasticity. SMAs are those alloys that when deform return to their predeformed shape upon heating, they also restore their original shape by removing the load. Research on properties of newly advent of several types of ferrous based shape memory alloys(Fe-SMAs), shows that they have immense potential to be the counterpart of Nitinol(NiTi-SMA). These Fe-SMAs have been used and found to be effective because of their low cost, high cold workability, good weldability & excellent characteristics comparing with Nitinol(high processing cost and low cold workability) SMAs. Some of the Fe-SMAs show super-elasticity. Fe-SMAs, especially Fe-Mn-Si alloys have an immense potential for civil engineering structures because of its unique properties e.g. two-way shape memory effect, super elasticity and shape memory effect as well as due to its low cost, high elastic stiffness and wide transformation hysteresis comparative to Nitinol. Further research is being conducted on SMAs to improve and impinge better attributes by improving the material compositions, quantifying the SMA phase transition temperature etc. In this research pre-existing Fe-SMAs are categorised and collected in a tabulated form. An analysis is performed that which category is mostly available. Last 50 years data of Fe-SMA publications and US Patents is collected to show its importance in terms of increasing research on such type of alloys to invent different compositions and applications. This data is analysed as per different year groups during last 50 years and it was analysed as per whether the keywords exist in title of an article or anywhere in the article. It was found that different keywords related to Fe-SMAs/categories of Fe-SMAs, almost don't exist in the title of articles. However, these keywords related to Fe-SMAs/categories of Fe-SMAs, exist inside the article but still there are not too many publications related to Fe-SMAs/categories of Fe-SMAs.

• 한국군사과학기술학회지
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• 제11권6호
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• pp.117-126
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• 2008

Recently, the investment and importance have been increasing concerning the researches which are based on fundamental studies. In defense science and technology development, the defense research centers are involved in a large portion of developing the potential capability such as defense applied technology, enhanced human resource, etc. In this paper, we analyzed the relative efficiency of 9 research centers(9 DMU : Decision Making Unit) supported by the defense budget, using DEA(Date Envelopment Analysis) method especially with the CCR-I(Charnes, Cooper, Rhodes-Input) model. Some variables are selected such as budget(input data), patent, article and human resource(output data) to be analyzed. Conclusively, the needs to identify performance-indicators, increase incentives to promote the performance and induce enthusiastic participation in defense science and development projects, are suggested via a relative efficiency analysis.

• Journal of Microbiology and Biotechnology
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• 제11권6호
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• pp.907-914
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• 2001

A whole genome analysis for monitoring specific changes in gene expression, using microarrays or proteome profiling of the same, are the two tools that have already revolutionized current approaches for studying disease. These methods are particularly important in cancer research as there are many overexpressed genes, and their products remain uncharacterized. This article presents a general overview of these technologies and their applications for studying cancer.

• 아동학회지
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• 제30권5호
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• pp.1-8
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• 2009

For the purpose of this analysis of trends in research on creativity of preschool children, 98 volumes with articles on the creativity of preschool children were selected from 6 reliable Korean academic journals. Analysis was for year, content, research methods, research design, and subjects. Results showed that (1) the changes by year were that the number of qualitative researches increased from 4 articles in 1998 to 24 articles in 2006. (2) The greatest amount of research content concerned educational methods for the generation of creativity. (3) Most research methods were empirical studies. (4) The most used measurement scale was the Korean Comprehensive Creativity Test for Young Children (Jeon, 2000). (5) Most data analyses were by t-test.

• 보건행정학회지
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• 제19권3호
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• pp.45-70
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• 2009

Outbreaks of health risks such as the Influenza A virus (H1N1) are continuing, which highlights the immediacy of risk control strategies to reduce public's fear and protect the safety of the society. Evidence suggests that success for risk management is basically dependent on the public's willingness to adopt health behaviors recommended by experts, and the behavioral intention relies on their risk perception. Understanding of how individuals think of and feel about health risks is thereby important. This article aims to provide insights for future study on health-risk perception. The main streams and recent developments of theorizing and research on health risk perception are reviewed. The issues, such as (1) health risk perception is an important component for shaping relevant health policies as it reflects public trust of the institutions managing health risks, (2) despite this significance, however, few attempts have been made to address the meaning of 'perceiving health risks' in health services research, are shed light on. On the basis on the critical discussion of the contributions and the limitations of the literature, this article finishes with a few of research agendas by three levels of analysis in risk perception research.

• 한국산업정보학회논문지
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• 제12권1호
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• pp.108-117
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• 2007

효율적인 프로젝트 관리를 위해 PERT 네트워크에 대한 다양한 민감도 분석이 수행되다. 활동의 평균시간에 관한 평균사업완성시간의 민감도 분석에 관한 기존 연구에서는 활동시간의 분포가 정규분포를 따른다는 가정 하에서 활동의 평균시간의 변화에 따른 평균사업완성시간의 변화량을 추정한다. 보 연구에서는 이산형의 활동시간 분포를 갖는 PERT 네트워크에서 활동의 평균시간에 관한 평균사업완성시간의 민감도 분석을 위해 기존의 민감도 분석 방법을 수정한 방법을 제안한다. 그리고 다양한 PERT 네트워크에 대해 얻어진 결과를 분석함으로써 제안된 방법의 적용 타당성을 예증하고자 한다.

• 한국언론정보학보
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• 제31권
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• pp.113-165
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• 2005

이 글은 매체산업의 계급론을 복권하기 위한 시도이다. 한국사회가 계급적 질서에 따라 구성된 만큼 매체산업도 계급적 이해관계를 반영할 것인지를 입증하기 위해 매체 소유 집중, 경영과 편집권 지배, 내용 통제 등에 대하여 분석하였다. 분석 결과 매체산업은 재벌기업, 종교자본, 외국자본, 정보 통신자본 등 여러 형태의 자본이 매체산업에 진출하여 구조를 변동시키고 있다. 거대 자본에 의한 산업 지배는 언론의 독립적 기반을 위협하며, 매체 생산물도 자본의 압박에 따라 더 보수화, 상업화되는 추세이다. 그런데 전통적인 관점에서 보면 매체는 계급간, 계층간 설득과 타협의 장으로서 가치가 있는 것으로 이해하고 있지만, 실제로는 그렇지 못하다. 매체는 거대한 자본을 중심으로 집중되고, 지배 블록을 단결시키는 역할을 한다. 매체산업과 연관된 자본이나 정치 세력은 한 몸이 되어 국가 권력과 여론을 좌우한다. 그 정점에는 삼성그룹이 있다는 점을 이 연구에서 밝혔다.

• Nonlinear Functional Analysis and Applications
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• 제27권3호
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• pp.587-601
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• 2022

In this article, we introduce the concept of contractive mapping, which is generally weak in metric spaces, and show the existence and uniqueness of the fixed point for such mapping in a metric space.

• 한국실내디자인학회논문집
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• 제24권6호
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• pp.38-46
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• 2015

The purpose of this study was to identify the research trend through content analysis of the previous researches on wayfinding issues in the field of spatial design in Korea. Total 91 research articles published in domestic academic journals from 1991 to 2015 were collected through the online search and analyzed using descriptive statistics. As conceptual framework for content analysis, research article publication year, academic field based on journal title, research methodology, target space for analysis, and type of research purpose were included. The major findings were as follows. Substantially, wayfinding research in Korea was begun in 1990s and was peaked in the latter half of 2010s. Healthcare facilities including hospitals and nursing homes were most frequently analyzed as target space, i.e., research subject. Majority of the researches analyzed were published in the diverse journals of design area. In many cases, qualitative research methods such as spatial construction analysis using Space Syntax, field study, observation, interview, etc were used by the researchers frequently. It was found that the majority of researchers focused on behavioral and psychological response of space users in the process of wayfinding. For further study, it is recommended to extend the scope of analysis to sign system which support effective wayfinding. In addition, foreign academic journal articles should be included for in-depth analysis.

• 아동학회지
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• 제27권4호
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• pp.17-38
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• 2006

This analysis of trends in research on children's temperament published in Korean journals during the 25years dating from 1980 consisted of articles from 10 reliable journals related to child studies and analyzed for research frequency, contents, and methodology. Results showed that 51 research articles on children's temperament were published during this period, most of them in child studies and early childhood education/educare journals. The main content of research was the role of temperament in development. Most of the studies used methods categorized as quantitative and non-experimental; subjects were more than 100 children younger than school age with their mothers as adult subjects. Instruments validated in Korea and based on the individual approach and quantitative data analysis methods were used frequently.