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이용환(Lee, Yong-hwan),유영중(Yoo, Young-joong) 글로벌경영학회 2012 글로벌경영학회지 Vol.9 No.2
본 연구는 주가변동성에 영향을 미치는 재무적 요인은 무엇인가를 규명하고, 이러한 재무적 요인이 주가변동성에 영향을 주는 정도가 기업특성에 따라 다르게 나타나고 있는지를 분석하고자 하는 것이다. 분석을 위하여 표본기업을 매출액증가율과 순이익증가율에 따라 4개의 집단으로 분류하였으며, 집단간 변수의 차이를 검증하기 위하여 분산분석을 실시한 바, 자기자본순이익률과 자기자본영업이익률을 제외한 모든 변수가 집단 간 유의적인 차이가 있는 것으로 나타났다. 4개의 집단에 대하여 주가변동률과 재무지표 사이의 회귀분석을 실시한 결과 집단 마다 유의성을 가지는 변수와 그 변수가 가지는 비표준화계수의 부호 및 크기에 차이가 있음을 알 수 있었다. 따라서 기업의 특성에 따라 재무비율이 주가변동율에 미치는 영향은 차이가 있을 것이라는 가설은 지지되고 있는 것으로 해석된다. The motivation of this study is identify financial factors influenced to volatility and analysis the effect of financial factors to volatility that is presumed different by business trait. For this study group sample business into four classes by increase ratio of sales and increase ratio of net profit. As a result of analysis of variance all the variables except ratio of net profit to equity capital and ratio of sales profit to equity capital shows resonable differences between four groups. Then it is expected that financial factors shows resonable relations to volatility at each four groups differently. As a result by regression it shows different resonable variables between four groups. And the size of unstandardized coefficients and symbols of unstandardized coefficients are different between four groups. So it is accepted that the effect of financial factors to volatility are different between four groups.
이용환(Lee, Yong-hwan),유영중(Yoo, Young-joong) 글로벌경영학회 2012 글로벌경영학회 학술대회 발표논문집 Vol.2012 No.1
본 연구는 주가변동성에 영향을 미치는 재무적 요인은 무엇인가를 규명하고, 이러한 재무적 요인이 주가변동성에 영향을 주는 정도가 기업특성에 따라 다르게 나타나고 있는지를 분석하고자 하는 것이다. 분석을 위하여 표본기업을 매출액증가율과 순이익증가율에 따라 4개의 집단으로 분류하였으며, 집단 간 변수의 차이를 검증하기 위하여 분산분석을 실시한 바, 자기자본순이익률과 자기자본영업이익 률을 제외한 모든 변수가 집단 간 유의적인 차이가 있는 것으로 나타났다. 4개의 집단에 대하여 주가변동률과 재무지표 사이의 회귀분석을 실시한 결과 집단 마다 유의성을 가지는 변수와 그 변수가 가지는 비표준화계수의 부호 및 크기에 차이가 있음을 알 수 있었다. 따라서 기업의 특성에 따라 재무비율이 주가변동율에 미치는 영향은 차이가 있을 것이라는 가설은 지지되고 있는 것으로 해석된다. The motivation of this study is identify financial factors influenced to volatility and analysis the effect of financial factors to volatility that is presumed different by business trait. For this study group sample business into four classes by increase ratio of sales and increase ratio of net profit. As a result of analysis of variance all the variables except ratio of net profit to equity capital and ratio of sales profit to equity capital shows resonable differences between four groups. Then it is expected that financial factors shows resonable relations to volatility at each four groups differently. As a result by regression it shows different resonable variables between four groups. And the size of unstandardized coefficients and symbols of unstandardized coefficients are different between four groups. So it is a
약물의 in vitro 투과 실험을 위한 사람의 비강점막상피세포 단층막의 일차배양
유진욱,김유선,이민기,노환중,이치호,김대덕 한국약제학회 2002 Journal of Pharmaceutical Investigation Vol.32 No.1
The primary culture of human nasal epithelial cell monolayer was performed on a Transwell. The effect of various factors on the tight junction formation was observed in order to develop an in vitro experimental system for nasal transport studies. Human nasal epithelial cells, collected from human normal inferior turbinates, were plated onto diverse inserts. After 4 days, media of the apical surface was removed for air-liquid interface (ALI) culture. Morphological characteristics was observed by transmission electron microscopy (TEM). A polyester membrane of 0.4 μm pore size was determined as the most effective insert based on the change in the transepithelial electric resistance (TEER) value as well as the ^14C-mannitol transport study. The ALI method was effective in developing the tight junction as observed in the further increase in the TEER value and reduction in the permeability coefficient (P_app) of ^14C-mannitol transport. Results of the transport study of a model drug, budesonide, showed that the primary culture system developed in this study could be further developed and applied for in vitro nasal transport studies.
유환희,김종오,김의명 경상대학교 환경보전연구소 1996 環境保全硏究所報 Vol.4 No.1
This study represents the present situation and the future prospect of waste management, the regulations for environmental protection, and the criteria and procedure for selecting the waste landfill sites using GIS. The criteria for selecting the waste landfill sites composes of 8 items ; topography, hydrology, geology, ecology, location, landuse, society, and others. In order to secure the accuracy and objectivity for selection of suitable waste landfill sites, individual weights of 8 items were introduced using the concept of fuzzy set. Also, unacceptable conditions were described for deciding which sites should not be selected because of environmental concerns. As showed in the result obtained by the case study in Chinju, GIS technology was demonstrated as a useful tool for the management and analysis of environmental data in the suitability analysis for the waste landfill sites.
최성환,정은기,김유광 大韓神經精神醫學會 1993 신경정신의학 Vol.32 No.6
The aged population is growing rapidly in Korea. In 1989, the people aged 65 and older marked 4.7% of the population and is expected to exceed 5% in 1993. It has been considered that as the elderly grow older, their cognitive function decline. As the proportion they take in the society is becoming larger, the use of more stable and reliable examination tools become more important to deal with and prevent their cognitive dysfunction. This study looked into the characteristics of cognitive functions of the elderly living in nursing homes. Mini-mental status examination and Brief cognitive rating scale were administered to 530 eldery(mean age 76±7.5) residing in 8 nursing homes located in Kyun-Gi province, vicinity of Seoul, in 1989 and in 1991. Cognitive function correlated with educational level, but not with age. The correlation of MMSE with BCRS was high. According to the results, it was not evident that aging deteriorates cognitive function. The deterioration of cognitive function was related to educational level. MMSE and BCRS were considered appropriate instruments in brief assessment of cognitive function and its prognosis in the elderly. Lengthened follow up interval and the cognitive evaluation of more various groups are desired in the future studies.
敎科書制度에 대한 憲法裁判所와 法院의 判例分析 : 敎科書制度의 발전을 위한 示唆點과 批判
김유환 梨花女子大學校 法學硏究所 2002 法學論集 Vol.7 No.1
Despite the apparent pro status quo arguments presented in the decisions of Korean judicial courts and the Korean Constitutional Court, their reasoning reveals different aspects of their real opinions. Even though the prevailing opinions of the courts confirm the legality of current regulatory system, I believe, most judges of the courts hoped to reform the current textbook regulations. I have found a number of useful reformative arguments from the reasoning of their decisions. From these arguments, I probed the possible reformative model of the textbook regulation system. First, the textbook adoption system must be regulated not by a Presidential decree but by a Statute enacted by the National Congress. Second, the National publication system of school textbooks must be abolished. Third, participatory rights of the parents should be enhanced, so much so that they can take part in selecting the textbooks. Fourth, procedural regulations should be introduced to the current textbook adoption process to restrict the discretionary power of the Textbook Adoption Committee and the other relevant administrative agencies. Fifth, In order to facilitate the judicial review for cultural diversity, the statutory clauses that provide guarantee against political and philosophical monopoly of the prevailing group should be created by National Congress.