• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.7
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• pp.3237-3243
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• 2012

The purpose of this study is to analyze city's built environment that have influence on residents' health in the 40 small and medium-sized cities. In the study, landuse, urban form and facility accessibility of cities and other socio-demographic variables were used as explanatory variables, and a statistical analysis was carried out by applying multi-level analysis. Analysis shows that a high level of population density lower the obesity, and a high level of landuse-mix have a positive effect on EQ-5D & hypertension. In terms of urban form and facility accessibility, residents show a high level of obesity in an environment where roads are closely connected and access to bus service is bad. Finally, as more access to open space have a positive effect on EQ-5D. Therefore, landuse-mix, access to public transportation and open space should be used for planning factors to make a health improvement plan in cities.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.2
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• pp.780-785
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• 2010

This research have aimed for analyzing the effect of relative factors on healthy life styles by the income level in a medium-sized city. Especially, the research tried to figure out whether the public health center's health-promotion-activity had different effects on healthy life styles by the income level. The random sampled data of 809 citizens aged between 19 and 69 were analyzed through phone survey by the Korea Gallop inc(surveyed from 2006.10.11 to 10.13). In the low socioeconomic status, the relation between people's positive conception about public health center's health-promoting-program and healthy behavior tendency is low. But in the high socioeconomic status, the relation is high. This result suggest that the effect of public health center's health promotion programs on healthy life styles is different by income level.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.11
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• pp.6685-6693
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• 2014

This study was designed to identify the relationships among powerlessness, self-esteem and depression in Korean-American immigrant elderly. The purpose was to provide baseline data for nursing intervention to improve their health. The results showed that depression was significantly correlated with self-esteem and powerlessness, self-esteem was also significantly correlated with powerlessness. Powerlessness was different from the level of education and health conditions. Self-esteem was significantly different to the frequency of family visits. Depression was significantly different from age. 50.0% of depression was explained by powerlessness and self-esteem. This suggests that a higher level of powerlessness and a lower level of self-esteem are associated with a higher the level of depression. In conclusion, to improve the psychological health of Korean-American immigrant elderly, it is crucial to consider age, the level of education and health conditions, and continually manage the levels of powerlessness and self-esteem.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.2
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• pp.351-360
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• 2016

The purpose of this research is to suggest directions for urban planning and policies for the creation of a happy urban environment. To achieve this objective, this study extracted the urban environment characteristic elements that were expected to affect the levels of individual happiness and empirically analyzed the factors that affect the happiness levels of people. To determine the elements of the urban environment, this research analyzed the variables, urban environment characteristics, such as physical environment, natural environment, social environment, and individual characteristics. Regarding the physical environment of the city, a lower population density and a higher level of walking environment satisfaction showed a high level of individual happiness. In terms of the natural environment of the city, more spacious park areas and higher green area satisfaction showed a high level of individual happiness. Finally, regarding the social environment of the city, social trust was found to affect the happiness levels.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.10
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• pp.7118-7125
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• 2015

This study examined one of the concerned or even imperative issues in the field of contemporary finance related to approaching an optimal level of cash holdings for the firms belonging to the chaebols in the Korean domestic capital markets. However, the subject may not have been drawn much attention so far, even if there are still ongoing and active debates among the interest parties at the macro- or micro-level. Two primary hypotheses were postulated to be empirically tested. On the results of the first hypothesis test for the existence of an optimal cash reserves for the sample firms, two estimation techniques were performed in terms of a quadratic regression equation and a relationship between a firm's value and the residuals derived from the static panel date model. As a primary financial implication of the study which may contribute to the practitioners and the academics in finance, the optimal level of cash holdings can be estimated by controlling for the a priori significant components for the sample firms towards maximizing firm value.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.10
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• pp.4561-4568
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• 2011

In this paper, carrier comparison PWM method for voltage control of Vienna rectifier is discussed. In general, in industrial and communications applications, the two-level rectifier is used. However, this two-level rectifier has the limit of high THD and low efficiency. So, the studies of three-level rectifier has been carried out so far, and the Vienna rectifier circuit is the representative. The space vector pulse width modulation(SVPWM) method is generally used for Vienna rectifier, in which voltage vectors and duration time are calculated from the voltage reference. However, this method require very sophisticated and complex calculations, so realizing this method by software is very difficult. To overcome this disadvantage, simple carrier comparison PWM method for Vienna rectifier is proposed which is modified from the carrier comparison method for 3 level inverter. Furthermore, to verify the usefulness of the Vienna rectifier carrier comparison PWM the simulation and experiment are carried out.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.9
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• pp.4163-4170
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• 2013

The recent studies indicated that the major sources of the failure in carrying out the programs of weapon systems development would be the unsatisfaction of the required key performance and also the use of premature technology. As such, to manage the risk during the weapon systems development, the use of the technical performance measurement (TPM) and the technology maturity assessment (TMA) turned out to be necessary. However, the TPM studied so far seems to cover the assessment of performance at the component level only, and thus is insufficient in considering the system integration effect. On the other hand, the system readiness level (SRL) method has been presented by reflecting the effect on system integration, but the system performance and maturity has not been considered. To overcome this, a measurement method is proposed in the paper by utilizing the combined system readiness level and achieved technical performance at the system level. This system performance measure can be useful in managing the risk in the weapon systems development.

• Korea Journal of Hospital Management
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• v.3 no.1
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• pp.62-82
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• 1998

The purpose of this study is to assess the cause and level of conflict arising within and between departments among administration office workers who work in a recently established tertiary hospitals of a major cooperation or related non-profit cooperation: The study also aimed to find methods for resolution of such conflicts by comparing with other existing university hospitals. The subject population included 299 business administration office workers randomly selected from two cooperate related tertiary hospitals of less than 3 years in its existence and two university hospitals over 700 beds in Seoul and Kyong In area. Data were collected through a survey questionnaire. To define related factors for the level of conflict among departments in each hospitals multivariate regression analysis was conducted. Independent factors were characteristics of subjects, conflicting factors within and between the departments. The results are as follows: 1. Those in the 30-39 rears of age group demonstrated significantly higher level of conflict between departments. Those working in the new hospitals, who were older and had long-term tenure, and those with short-term job experience at current working hospital had higher level of conflict between the departments with statistical significance. 2. Concerning the involvement of conflicting factors and the level of conflict in the administration there was statistically significant positive correlation between reliability and job-related intra- and interdepartmental level of conflict in existing hospitals. There was a significant positive correlation between intradepartmental conflicting factors of mutual dependence, difference in goal/orientation and intra- and interdepartmental level of conflict. 3. In multivariate regression analysis, women more than men, and those who had worked for many years in hospitals had statistically significant influence on factors involved in interdepartmental level of conflict, explaining 51.0% of the model. 4. In existing hospitals, gender was a significant factor with women showing a higher level of interdepartmental conflict compared to men. Among the interdepartmental factors, mutual dependence had statistically significant influence and showed a positive relationship with interdepartmental level of conflict. In the new hospitals, job position was a significant factor which showed that those in high position such as section chief or above, compared to those in managerial or general position had higher level of conflict. Among the interdepartmental characteristics, factors of mutual dependence and goal/orientation had statistically significant influence and showed a positive relationship with interdepartmental level of conflict. In the new hospital setting efforts to reduce conflict in areas among workers with high position, old age, and long tenure and those in Purchasing, Material and Computer Department should be made and prudent management and planning for improved manpower and increased budget or efficient allocation and clear definition of job description are necessary to adequately assess and make improved efforts for rapid stabilization of the premature hospital system from its inception, In the existing hospitals a lack of conflict within and between departments may give rise to stagnation or inefficiency of the organization. Future study are needed with respect to the relationship between interdepartmental level of conflict and the effectiveness of the hospital organization for improved resolution of conflict in the organization and hospital management.

• Proceedings of the KAIS Fall Conference
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• 2011.05b
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• pp.796-799
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• 2011

본 논문에서는 공무원의 관광산업에 대한 효과지각이 관광산업의 중요성 인식에 어떤 영향을 미치는 가에 대한 관계를 규명하였다. 공무원의 관광에 대한 효과지각은 관광과 관련된 업무정도에 따라 관광산업의 중요도를 다르게 인식한다는 점을 실증분석하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.2
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• pp.736-745
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• 2011

The economy of the EU left behind the US economy in many aspects and the gap is widening. One major reason that promoted the EU's leading position, is the ability to continuously advancing industrial technology and it's high level of competitiveness. The role as a powerhouse of technological development is nurtured by a systematic attempt of the EU commission to stimulate international cooperation. Although the EU is focussing its efforts on international cooperation between EU-member states, nonmembers, namely Korea, can profit from this policy as well and generate win-win situations for both cooperating partners. Despite the enormous benefits for the Korean economy that would result from close ties with the EU in terms of technological cooperation, academic research in this area is very sparse. The main focus of the Korean academic community has been on the US and Japan so far; the cooperation between Korea and the EU was rather ignored. The purpose of this paper is to shed light on the potential of technological cooperation between Korea and the EU. After an introduction, chapter 2 explains the technology and innovation policy of the EU. Chapter 3 introduces the Framework Program for Research and Technological Development of the EU. Chapter 4 focuses on small and middle sized businesses and examines EUREKA, the EU’s effort to coordinate pan-european research cooperation.