• The Korean Journal of Financial Management
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• v.11 no.2
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• pp.65-81
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• 1994

주식의 기대수익률과 체계적 위험과의 관계를 설명한 자본자산가격결정모형(CAPM)은 지난 30년간 많은 재무학자들에 의해 지속적으로 검증 받아 왔다. 물론, 자본시장의 효율성도 포함된 결합가설(結合假說)(joint hypothesis)의 검증이라는 어려운 점도 있으나, 일련의 연구는 기존에 발견된 주가이례(株價異例)현상을 설명하기 위해 새로운 위험 변수가 필요하다고 지적하였다. 이러한 방향으로의 연구 중 차별정보가설은 투자분석에 이용 가능한 정보의 양(量)이 위험측정의 불확실성을 결정하므로 주식의 수익률도 따라서 변하게 된다고 설명하고 있다. 본 연구는 기업의 다각화가 진행됨에 따라 각 사업단위의 회계정보 및 소속산업의 자료수집을 통한 정보의 양이 증가된다는 가정아래 차별정보가설을 실증 분석한다. 기업규모를 통제하여 구성한 포트폴리오 분석 방법은 다각화지 수가 낮은 기업이 체계적으로 높은 초과수익률을 갖는 것으로 나타났다. 이 분석결과는 차별정보가설이 예 상하는 바와 일치하는 결과로 해석될 수 있다. 그러나, 기업규모의 통제없이 구성한 다각화 포트폴리오의 분석결과와 개별기업 차원의 회귀분석 결과는 초과수익률과 기업의 다각화 정도가 선형 관계가 아닌 U자형의 관계에 있다는 것을 보여주고 있다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.2
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• pp.606-614
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• 2012

With rising concerns on downturn of global economy, college graduates are experiencing a serious unemployment crisis. In this reality, undergraduates preparing for employment face much stress from worries and conflicts. Accordingly, the purpose of this study is to examine the influence of university student's belief of destiny on sub factors of employment stress such as environmental, physical, psychological and keen behaviors according to internal and external locus of control. 550 surveys were distributed to four-year university students in Seoul, capital area and rural area for 15 days from October 5 until October 20, 2011. 480 surveys were returned, among which 430 were effective as study subjects. As a result of this study, first, environmental influence on employment stress was high at 49% while physical influence was 7%. Second, as a result of performing correlation analysis on employment stress and locus of control, external locus of control showed positive influence in environmental, physical, psychological and keen behaviors. Internal locus of control showed negative influence in all behaviors, suggesting that more diverse career information must be provided. Since increase in career efficacy and reduction of employment stress in university students are directly linked to unemployment rate of youths, diverse and active methods are deemed necessary.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.5
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• pp.410-417
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• 2018

The purpose of this study was to investigate the perception of elder abuse, subjective norms, and perceived behavioral control and to examine what factors influence attitudes toward elder abuse. The subjects were 404 nursing students at D and S universities in G province. The data were collected from November 20th, 2017 to January 26th, 2017. The collected data were analyzed using descriptive statistics, independent t-test, ANOVA, Pearson's correlation coefficient, and stepwise regression using the SPSS / WIN 22.0. The results show that perception of elder abuse had a score of 3.60, subjective norms had a score of 2.69, and perceived behavior control and attitude had scores of 2.62 and 2.97. Perception of elder abuse, subjective norms, and behavioral control and attitudes showed significant positive correlations and showed significant differences according to elderly nursing education. Factors influencing attitudes toward elder abuse were perception of elder abuse, subjective norms, and perceptions of behavioral control and grade. The results of this study indicate that it is important to increase awareness, subjective norms, and behavioral control for the intervention of elder abuse. We suggest that nursing education of the elderly is important for the intervention of elder abuse.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.9
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• pp.5610-5620
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• 2014

This study was conducted to determine the levels of job stress, as well as its association with psychosocial factors (type A behavior pattern, locus of control, and self-esteem). Self-administered questionnaires were given to 634 clerical public officers in the C Provincial Office between February 18 and Mar. 10, 2013. As a result, the job stress levels of the subjects was significantly different according to age, sex, educational level, marital status, job position, job career, satisfaction in job life, smoking, alcohol drinking, sleeping time, type A behavior pattern, locus of control, and self-esteem. Regarding the correlation of job stress and psychosocial factors, the level of job demand was negatively correlated with the internal locus of control. The decision latitude was negatively correlated with the type A behavior pattern, internal locus of control and self-esteem. Supervisor support was negatively correlated with the external locus of control. In hierarchial multiple regression analysis, the affecting factors to the job stress selected variables, such as age, subjective health status, job position, overtime work, experience of sick absence, satisfaction in work, sleeping time, leisure time, visiting out-patient department, type A behavior pattern, locus of control, and self-esteem, and the explanatory powers of these factors was 32.1%. In particular, the factors related to the psychosocial factors (type A behavior pattern, locus of control, self-esteem) were strongly related to the job stress, increasing the explanation of factors up to 15.0%.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.11
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• pp.552-562
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• 2016

Although a number of studies have been conducted in Korea since 2000 on the impact of early English education, their interpretation is still not conclusive, due to their lack of control groups and failure to control for third factors and use valid measurements. The present study was designed to examine the effect of an English education program on young children's English proficiency after 8 months using the most well-known official English proficiency measure, the WIDA for kindergarteners. In addition, the children's Korean language proficiency, cognitive abilities, personality, parents' SES, and parents' attitudinal variables before the education were measured and controlled. The results indicated that the intervention group performed better than the control group in both listening and speaking skills, even when all relevant factors were considered. This effect, however, was only found in the item-level analyses.

• Journal of The Korean Association of Information Education
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• v.21 no.2
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• pp.247-257
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• 2017

The aims of this study are to analyse how smartphone affects (1)self-control and (2)self-directed learning ability of middle-school students, and also affect (3)self-directed learning ability by mediation of self-control. For these aims, this study used Seoul Educational Longitudinal Study panel data which was conducted in 2015, and conducted multi-group comparisons using structural equation modeling analyses. In analysis of smartphone effects, the use of smartphone of students was divided into 'for entertainment' and 'for learning', and also their first time of smartphone use was considered(elementary vs. middle school). Results indicated that while 'smarphone use for entertainment' was related negatively with self-control and self-directed learning ability of students, 'smarphone use for learning' was related positively, regardless of when smartphone was first used. Also, while 'smarphone use for entertainment' was related negatively with self-directed learning ability by mediation of self-control, 'smarphone use for learning' was related positively.

• Korean Journal of Childcare and Education
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• v.6 no.1
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• pp.47-65
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• 2010

The current study aims to examine differences of mother's child-rearing attitude by background variables of infant's and mothers, the influence of mother's child-rearing attitude, temperament and goodness of fit of infant's on adjustment to childcare center, and relative influence among elements. Subjects for the study were 165 infant's of two year old attending 8 childcare centers in Seoul, Gyeonggi-do and Jeju-do, and their mothers and homeroom teachers at childcare centers. As a result of the study, it was found that there was no difference in background variables such as sex and order among siblings of infant's, childcare experience and average hours at childcare centers a day, and mother's age and job, while there were differences in mother's child-rearing attitude by mother's education, household's monthly income and mother's working hours per week. Also it was observed that mother's restrictive attitude, positive attitude and infant's regular temperament influenced their adjustment to childcare centers, and relatively influential elements on general adjustment to childcare centers were mother's restrictive attitude and positive attitude. That IS, it was found that as mother's restrictive attitude and positive attitude were high, infant's general adjustment to childcare centers became high. These study results show that if infant's learn basic rules and habits from parents at home by having positive relationship with mothers, getting appropriate educative instruction, having proper autonomy and obtaining positive assessment from their mothers, rather than strict restriction or bluff, can adapt themselves to childcare centers with no difficulty.

• Korean Journal of Social Welfare
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• v.59 no.2
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• pp.355-379
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• 2007

This study examined the role of social support and mastery in the effects of hopelessness and depression on suicidal ideation in order to identify elders' suicide and it's related factors. Especially, it focused to find out whether the hopelessness excluding depression has an independent effect on elders' suicidal ideation, and psychosocial factors such as social support and mastery has an interaction effects with elders' hopelessness variables and depression on suicidal ideation. This study recruited 297 elders over 65(older persons in the elder education programs of senior welfare center in Masan, Changwon and Jinhae) and employed a self-administered survey method during January, 2007. The following are the major results of the study. First, the level of hopelessness, depression and suicidal ideation related elders' suicide indicated differences according to their educational level, marital state, income, and their chronical disease numbers. Especially, the lower income and higher chronical disease numbers showed higher level of hopelessness, depression and suicidal ideation among the elder subjects. Second, interaction effects of social support and depression were significant in suicidal ideation, the more level of social support in elder' subjects, the lower the suicidal ideation. While, interaction effects of social support and hopelessness, and mastery and depression/hopelessness in suicidal ideation were not statistically significant. Third, psychosocial factors such as social support and mastery on elders' suicidal ideation have a significant effect when other relevant variables are controlled. From these results, hopelessness is other significant factor predicting suicidal ideation(suicide) among elders. Also, social support and mastery is very significant factor influencing to prevent or decrease suicidal ideation among elders.

• Korean Security Journal
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• no.32
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• pp.205-225
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• 2012

This study is to present an improvement of facility security through the evaluation of facility security operation level. To fulfill the purpose of the study, a survey of some facilities was conducted and the result was analyzed as follows; First, although security personnels were deployed in the facilities, the level of security personnel operation was relatively low. Second, job education training level was relatively proper, that is relevant to the result that show the level of service mind and the working mind of security personnel were proper, also relevant to the relatively good work shift system. Third, although situation room was operated well, the level of restricted area set-up and access control of visitor were low, and the level of article inspection and vehicle access control were very low. Forth, the level of security manual application that include detailed security method and procedure was proper. But accident prevention and response manual application was lower than security manual application, that show preparation for fire and negligent-accident is passive. For the improvement of facility security, the high level part and low level part in the survey result could be merged. For example, we could specify factors that show low level in the survey such as security personnel operation, access control of visitor and vehicle, article inspection, accident prevention and response in the security manual and promote education circumstance that show high level.

• Journal of Digital Convergence
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• v.10 no.11
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• pp.541-550
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• 2012

The purpose of this study was to investigate the effect of aerobic exercise training and half bath on blood component, cardiorespiratory function, and vascular compliance of middle-aged obese men. The subjects were 3 groups; aerobic exercise(n=10), half bath(n=10), and controlled group(n=10). They were tested on their blood component, cardiorespiratory function, and vascular compliance at the beginning and at the end of the 12-week study(pre-post test). For data analysis, mean and standard deviation scores were calculated, and repeated measure two-way ANOVA and Scheffe were used. The results of this study are as follows. First, aerobic exercise group was significantly improved on all blood component after the 12-weeks, and showed significant difference among groups. Half bath group was better than control groups on Triglyceride, LDL-C, and HDL-C levels. Second, aerobic exercise group was significantly improved on maximum oxygen uptake, maximum heart rate, and maximum ventilation after the 12-weeks. Third, in vascular compliance measured in both hands and both feet, the half bath group and aerobic exercise training group were significantly increases the control group. Therefore, these results imply that aerobic exercise and half bath can be helpful for better blood component, cardiorespiratory function, and vascular compliance in middle-aged obese men.