• The Korean Journal of Financial Studies
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• v.8 no.1
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• pp.99-116
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• 2002

본 연구는 우리나라가 1996년 외환자유화와 자본자유화로 특징지워지는 국가들의 국제조직인 OECD에 가입한 이후 국내주식시장에서 환위험과 세계시장위험에 조건부로 가격보상이 이루어지고 있는가를 가격결정모형의 가장 일반적 형태인 확률적 할인요소를 이용하여 검정하였다. 무조건부 가격결정모형을 이용하여 국내주식시장에서 환위험프리미엄과 세계시장위험 프리미엄의 존재를 검정하고자 하는 연구들의 결론들이 일치되지 않고 있는 상황에서 조건부 가격결정모형을 이용한 검정노력은 자연스러운 접근순서로 볼 수 있다. 무조건부 가격결정모형에서 위험프리미엄이 존재하지 않는 것으로 검정되는 경우에도 조건부 프리미엄은 존재할 수 있다. 확률적 할인요소는 국내시장위험, 환위험, 세계시장위험 등 세 가지 위험요인이 포함되도록 정의하였으며, 조건부 정보를 구성하는 도구변수는 기존의 선행연구를 참조하여 6개를 선정하였다. 여기에는 상수, 전기의 국내시장수익률, 현재기의 무위험이자율, 전기의 세계시장수익률, 전기의 부도위험스프레드, 전기의 유로달러이자율이 포함된다. 월별 시계열 자료를 이용하여 가설을 검정한 결과 환위험 프리미엄과 세계시장프리미엄이 모두 존재하는 것으로 나타났다. 이 결과는 외환위기 기간이었던 1997년을 제외하더라도 차이가 없었다. 따라서 기업의 재무결정에서 환위험헤징활동 등이 기업가치창조와 무관하지 않음을 의미하고 있다. 국내시장위험과 세계시장위험이 모두 프리미엄을 요구하고 있음은 우리 국내시장이 세계시장과 완전 통합된 상태는 아님을 보여준다고도 해석될 수 있다.

• Journal of Korean Academy of Nursing
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• v.12 no.1
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• pp.53-66
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• 1982

본문은 보건사업이용문제를 취급한 국내외의 문헌을 조사하여 사회인구학적. 경제적, 사회문화적(사회심리학적, 조직적 그리고 사회제도적）인 입장에서 보건사업이용문제를 어떻게 설명하는가를 보고저 했다. 사회인구학적 측면에서 볼 때 연령, 성별, 교육수준, 결혼관계, 직업별, 종교, 거주지, 가족의 크기 가족구성등의 요인들이 일면외 연구중에서 정도를 달리하며 보건사업이용에 영향을 미치고 있음이 밝혀지고 있다. 경제적 입장에서는 가구수입, 의료비, 의료보험비와 경제적지위에 관한 다른 여러가지 요인들이 직접적으로 보건사업활용행위에 영향을 주고 있으며 사회문화적 입장에서 생각할 때 보건사업이용행위는 사회계급과 문화적 가치, 인종적차이와 의료적 태도의 상이에 따라 크게 좌우되고 있음을 보여주고 사회심리학적으로서는 보건에 관한, 태도, 믿음 및 지식과 지병으로부터 오는 정신적 압박감과 환자와 의사간의 상호작용등의 요인들이 보건사업이용과 어떠한 상관관계를 가지느냐에 그의 초점을 두는 바 이러한 주요인들이 다소나마 보건사업이용행위에 영향을 가하고 있음을 관계문헌은 말해주고 있다. 조직적 견해로서는 보건사업구조의 어떠한 조직적 변화는 보건사업이용행위에 영향을 준다는 것을 전제하고 있으며 사회제도적 입장에서는 한 개인은 여러 요소들이 상호관계되어 있는 한 제도의 일부요소로 보고한 개인의 보건사업이용행위가 다른 관계된 요소들에 비해서 어떻게 영향을 받고 있는가를 밝히려 하고 있다. 끝으로 보건사업이용에 관한 조사연구자들은 이상에서 말한 여러가지 견해의 접근방법중 단순히 한가지 접근방법만을 접하지 않고 있으며 앞으로도 더욱 종합적인 접근방법에 의해서 보건사업이용에 관한 연구가 이루워 질 때 보다 의미 있는 결과를 얻을 수 있을 것이다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.18 no.9
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• pp.1239-1247
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• 1993

Mathematical morphology based on the set theory has been applied to various areas in image processing. In this study, we propose a new pyramid structure for binary images based on the morphological operations. We use a specific class of structuring elements to shrink or expand images, and prove that the whole operations are separable to construct the pyramid. Through a simulation study, we show that the pyramid can be used as a progressive image coding.

• Journal of the Korean Society for Library and Information Science
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• v.54 no.1
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• pp.243-275
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• 2020

The purpose of this study was to explore the direction of librarianship by analyzing differences in Librarian and User perceptions of Librarianship Professionalism. Literature research was used to derive the components of librarianship Professionalism and to conduct surveys on librarians and users. As a result, librarians recognized expert knowledge as the most important factor, while users recognized service attitude as the most important factor. Users recognized that librarians have low social recognition due to their lack of enjoyment, enthusiasm, and challenging spirit and their ability to develop and provide services by understanding user needs and the flow of knowledge. On the other hand, librarians did not actively engage in communication or exchange with users due to their lack of expert knowledge.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2010.11a
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• pp.126-129
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• 2010

MEMS(micro electro-mechanical systems) inertial switch which is applicable to the ignition Safe-Arm- Unit of propulsion system is devised. The MEMS inertial switch is designed according to the general design procedure for conventional mechanical elements. Unlikely conventional MEMS accelerometer, threshold inertial switching mechanism is adopted which makes a MEMS element an abrupt switching in a certain acceleration level. By comparing the design data and test results of the specimen a small discrepancy in switching acceleration level is found which is presumably due to the nonlinear characteristics of the beam spring and the flexure hinge which are the main parts of the MEMS inertial switch.

• Science of Emotion and Sensibility
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• v.5 no.3
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• pp.21-28
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• 2002

In order to reflect emotion and sensibility of consumers to textile pattern design, the effect of design elements of block stripe pattern on sensitivity was investigated. The stimuli were manipulated with 4 design elements of value difference (3 levels), arrangement (2 levels), width (2 levels) and interval (3 levels). Among the 36 combinations, 27 stimuli, which showed independent sensibility results in the pretest, were adopted as final stimuli. Male and female university students (n=30) evaluated each sensibility subjectively using a questionnaire developed for this study. The effect of design elements on 12 sensibility dimensions drawn by factor analysis and the relationships between the physical quantities of each stimulus and the sensibilities were investigated. As the results of ANOVA for the effect of design elements on sensibility, there were more significant differences in sensibility in the orders of value difference, interval, width, and arrangement. The value difference showed the highest explanatory power. Looking at the sensibility differences according to the level of design elements, the narrower the width of the stripe, the more 'humble', 'clean', 'modern', 'simple', and 'comfortable', and the narrower the interval between stripes, the more 'impressive' and 'conservative' The smaller the value difference, the more 'luxurious', 'modern', 'humble', 'simple', 'soft', and 'clean'. Regression models to predict the 12 sensibilities showed higher values of goodness of fit except 'conservative', 'casual' and 'modern', which were all over 0.6. Based on these results, 2 design prototypes reflecting consumer's sensibility were presented.

• The Journal of Engineering Geology
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• v.2 no.1
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• pp.19-35
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• 1992

aThe elastic properties of the fault zone (width; 3~12m), the shattered zone (width; over 40m) and the fresh rock zone distributed under the core foundation of fill dam in granitic gneiss have widely different range. The deformation moduli of the fresh rock zone, the fault zone and the shattered zone obtained from in situ rock tests - Plate Load Test and Bore Hole Deformation Test - show a range of $42,000~168,000kg/\textrm{cm}^2,{\;}963~2,204kg/\textrm{cm}^2{\;}and{\;}1,238~2,098kg/\textrm{cm}^2$, respectively. The differential settlements hetween the fault zone and the fresh rock zone are expected after the dam construction. Therefore, the displacement of foundation and concrete fill are evaluated using FEADAM 84 program of finite element analysis. The geometric distribution of discontinuifies obtained from the site mapping and drilling is considered in the finite element analysis. The analysis shows that the differential settlements between the fault zone and the fresh rock zone is about 6cm, while that of concrete fill is within 0.5cm.

• The Journal of Korean Association of Computer Education
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• v.11 no.3
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• pp.1-11
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• 2008

All learners have to improve problem-solving abilities based on the principles of Computer Science and Computational Concepts as well as enhance their information technology fluency for living in the 21st century. However, there are no clear answers for fundamental questions such as 'What is Computer Science?' or 'What is the nature of Informatics education?'. Informatics education is threatened by the terminological confusion and misleading external images of Computer Science or Informatics education. Therefore, in this study, we closely reviewed perspectives on the nature and necessity of Informatics education and suggested a perspective to improve Informatics education. First, we examined how the definition of Computer Science has changed and pointed out that the Computer Science curriculum has operated differently from country to country because of the different viewpoints about Computer Science. Moreover, we presented evidence to assert that Informatics education should be considered as an independent science subject that is for all students. Finally, we suggested essential elements to insist that Informatics is a discipline to improve computational thinking. Essential elements consisted of 'Representations', 'Processes', 'Machines', 'Relationships' and 'Construction'. We suggested that the concept of Informatics should be extended based on these five elements.

• Journal of Korea Game Society
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• v.8 no.4
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• pp.17-27
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• 2008

This study has made an in-depth analysis of the 'Puzzle System' which is a characteristic structural unit of the Adventure Game, and concentrates on the mechanism where the experience arouses in the player a 'desire (quasi-need) to finish' that leads to one's immersion and engagement in the game. In the course of conducting this study, documentary records were consulted and also this writer personally played video games to learn the component elements and fundamental characteristics of the Adventure Games and to experience how the player was immersed in the game. Thus, the Puzzle System in the Adventure Game was defined and an analysis was made of the structure and course of play where the puzzle part and the narrative part within the system organically interacted between them in the system. In order to confirm the formation and effects of 'desire to finish' shown in the hypothetic assumptions, two experiment-purpose game units were produced, one with dramatic cut scenes and the other without them, so that differences between them could be found. I also conducted an experiment to learn the generation and effect of the 'desire to finish' of the Puzzle elements by using different games with a varying degree of difficulty.

• Science of Emotion and Sensibility
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• v.9 no.4
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• pp.341-351
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• 2006

The effect of color evokes a certain feeling and affects behavior. Especially, an understanding and applying color are critical because well-designed color substantially contributes to quality and usability. In this study, the effects of three color components(hue, value, and chroma) on apparent warmth were investigated separately and relatively, and then feasibility of applying to the information display was examined. The result showed that the apparent warmth of 10 Hues was a U-shaped function declining from Red to Purple-Blue and increasing from Purple-Blue to Red-Purple with following order of color-circle. Chroma made the character of hues remarkably clear, so warm color becomes warmer and cool color becomes cooler if chroma gets higher. But value has no effect on warmth. These results propose that we can change the apparent warmth by varying chroma in the limitation of color use. And there was a sharp distinction between warm and cool color, Meanwhile, in the reading task of the graphical information, the subjects' judgment distortion overestimating or underestimating the actual degrees was ascertained. This result should be applied to control operator's sensitivity in accordance with the purpose of task and display.