• Journal of Industrial Convergence
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• v.20 no.6
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• pp.83-92
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• 2022

This study is to investigate the factors affecting post-traumatic stress disorder (PTSD) symptoms among hospital nurses during the COVID-19 pandemic in Korea. Cross-sectional, descriptive design is used in this study. Data collection was completed through an online self-administered survey from December 2020 to January 2021 among 180 registered nurses dealing with COVID-19 patients at hospitals. This survey includes socio-demographic questions, including a 22-item PTSD questionnaire, a 14-item type D personality questionnaire, a 25-item resilience questionnaire, and a 23-item Social Support Scale questionnaire. 56.1% of the subjects in this study were at risk of PTSD. In the high-risk group for PTSD, resilience and social support were lower than those in the low-risk group for PTSD. But there was no statistically significant difference in both variables (resilience t=0.21, p=.836, social support t=1.07, p=.287). However, education (OR = 2.23, p= .041) and type D personality (OR = 3.67, p < .001) were significant factors for PTSD symptoms. The results of the study can be utilized to recognize PTSD in nurses by identifying factors influencing PTSD during epidemics such as COVID-19, and to apply management systems such as psychological programs to help overcome them.

• Journal of Korea Entertainment Industry Association
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• v.13 no.3
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• pp.221-229
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• 2019

This study intended to find out the participants' learning process in senior counselling program for life care and the meanings of senior's social support and participation in society. The study method was conducted with this researcher through a narrative' interview during 15-week learning course of senior counselling program in the life-long learning institute at A university. As the results, it could found that senior trainees were able to enhance their intellectual level through the senior counselling program to enhance their self-esteems and improve their memory through the education. Also, through the license of senior counsellor, they became more sophisticated and developed the abilities of comprehension and empathy about the senior in experiencing the intergenerational interactions in the space of social interactions, and the enjoyment of learning changed the senior's behaviors and increased their life quality. This research identified that a learning process enabled to continue the senior's social support and participation in society and made the senior achieve various interactions and practical learning through the exchange of trainees' various cultures. Based on these results, it is expected that various, systematic educational programs will be able to improve the senior's life care in future.

• Journal of Digital Convergence
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• v.10 no.10
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• pp.383-388
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• 2012

The purpose of this study is to examine the eco-systemic factors that affect the care givers' job satisfaction, and to attain the real data that is useful for increasing the care givers' job satisfaction. The subjects were 195 care givers who involved in long-term care service center in D city. Collected date were analyzed through frequency, percentage, correlation and hierarchical regression analysis. The results are as follow. The factors that affect the care givers' job satisfaction are the age of care givers, the levels of self-esteem, the respect from client, and the levels of support received from friend. The implication of our findings is that for the puporse or increasing the care givers' job satisfaction, the education programs for the care givers and client are necessary.

• The Korean Journal of Financial Management
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• v.24 no.1
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• pp.59-83
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• 2007

In this paper, we test empirically free cash flows hypothesis about stock repurchase. The main results of this study can be summarized as follows. First, repurchasing firms do not experience a growth in profitability relative to their peer firms. Second, repurchasing firms experience a contraction in their investment opportunity, and so capital expenditures and cash reserves decline after the repurchase. Third, repurchasing firms experience a decline in systematic risk and investments and in their cost of capital. Fourth, the reduction in profitability and cost of capital are sources of the positive market reaction to the repurchase announcement. And the market reaction to stock repurchase announcements is stronger among those firms that are more likely to overinvest. Conclusively, these results support free cash flows hypothesis. When firms experience a decline in profitability, capital expenditures and cash reserves, systematic risk and cost of capital, they decide to repurchase stocks to reduce free cash flows.

• Convergence Security Journal
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• v.18 no.4
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• pp.45-52
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• 2018

As the era of the 4th Industrial Revolution has progressed and the information and communication technologies have developed dramatically, the cyber threats will gradually become more intelligent and sophisticated. Therefore, in order to take systematic and prompt action in case of an accident while preparing measures against the threat, the role of intelligence agency is important. However, Korea is having difficulty in responding to the threats due to the lack of support for the national cybersecurity bill or the amendment bill of the National Intelligence Service. In this paper, I examine the cybersecurity function of the intelligence agency, the recent debate trends, and implications for the role of intelligence agency in our current situation. And then I intend to suggest some measures such as concentration on information gathering and analysis, enhancement of cyber threat prediction and response capacity, and strengthening of legal basis as a way to establish the role of intelligence agency for reinforcement of cybersecurity performance system.

• Journal of the Korea Society of Computer and Information
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• v.28 no.3
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• pp.177-187
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• 2023

This study aims to validate a tool evaluating MOOCs for higher education from the perspective of education service. Based on the results of related researches, a potential model for evaluating MOOCs (4 factors and 8 sub-factors) was made. An evaluation tool consisting of 18 survey items was delivered to 138 college students. After data cleaning, 136 surveys were used for exploratory factor analysis (principal component analysis. varimax rotation) and reliability analysis that confirmed the fitness of the potential model. Four exploratory constructs and seven sub-factors were extracted: Factor I was labeled as 'Systemic Learning Experience,' Factor II, 'Value Experience,' Factor III, 'Co-creation of Value Experience,' and Factor IV, 'High Order Learning Experience.' Reliability estimates using Cronbach's alpha indicated that the evaluation tool had good internal consistency. In conclusion, the evaluation tool for MOOCs in higher education was proven to be valid and reliable.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1991.04a
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• pp.91-93
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• 1991

DARBS는 저널베어링 및 구름베어링에 지지되어 있는 회전체-베어링계에 대한 동력학적 해석을 수행하는 프로그램이다. 해석에는 유한요소법(finite element method)을 이용하며 선회속도(whirl speed), 모우드 형성(mode shape), 임계속도(ciritical speed) 그리고 비동기 가진응답(asynchronous response)등에 대한 해석결과를 제공한다. 본 프로그램의 주된 특징은 람다 행렬(lambda matrices)의 개념을 도입하여 비동기 가진응답의 해석에 적용하 고, 베어링 상수와 자이로 효과와 같은 회전속도 의존성에 대하여 체계적인 접근방법을 사용했다는 점이다. 본 프로그램은 IBM PC 및 호환 기종에 적 합하도록 개발되었으며 기본적인 출력장치를 지원하는 S/W가 포함되어 있 다. 또한 대화식 데이타 입력과 메뉴처리방식을 채택하여 사용하기 편리하게 하였으며, 오류발생시 메세지가 나타나 오류수정을 용이하게 하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.439-441
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• 2012

수해양 공간 이용에 대한 다양한 시도와 관심이 증가하고 있다. 하지만 플로팅 건축물의 설계 및 설치를 위한 법제도의 미비와 명확하지 못한 법적 지위로 인하여 플로팅 건축물을 적극적으로 도입하고 활용하는 과정에서 많은 어려움이 발생되고 있다. 이러한 법제도의 미비와 법적 지위의 불평확함은 플로팅 건축물 및 관련 산업의 성장을 저해하는 가장 중요한 요소 중 하나로 국내 상황에 적합한 법제도의 정비와 개선이 시급한 실정이다. 하지만 현재까지 이와 관련된 자료조사나 연구가 체계적으로 이루어 지지 못 하고 있다. 따라서 본 연구에서는 플로팅 건축물에 대한 현행 법제도의 문제점과 법 적용 현황을 분석하고 국외 법제도 사례조사를 통해 플로팅 건축물의 설계 및 설치에 있어 가장 많은 영향을 미치는 플로팅 건축물의 법적 지위, 입지, 대지 및 인 허가에 대한 법제도 개선방안을 제시하였다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1993.04b
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• pp.131-136
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• 1993

일반적으로 공작기계 주축계에 대해서 요구되는 기본적인 항목들로는 고강성, 고감쇠, 고회전정밀도, 저발열, 장수명 등이 있다. 최근에는 이러한 기능들과 함께 가공능률과 가공정밀도의 향상을 도모하기 위해서 고속절삭을 실현햐ㄹ 수 있는 공작기계 주축계의 고속화, 즉 고속 주축계에 대한 연구가 활발히 진행되고 있다. 본 연구에서는 고속주축계의 동특성을 체계적으로해석하기 위해서 주축회전수의 영향을 고려한 유한요소모델(finite element model)을 도입하였다. 특히 주축은 세장비가 비교적 자기 때문에 Timoshenko보 이론으로, 베어링은 유한한 폭을 가지고 있기 때문에 반경방향 외에도 모멘트방향의 강성 및 감쇠특성을 가지고 있는 것으로 모델화 하였다. 그리고 고속주축계의 설계조건들을 도출하기 위해서 동특성 해석결과들로 부터 고속주축계의 모드매개변수들인 고유진동수와 감쇠비에 대한 주축 회전수, 베어링의 지지특성, 베어 링의 간격, 주축재료의 내부감쇠율 등의 영향을 고찰하였다.

• Journal of Korean Library and Information Science Society
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• v.30 no.2
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• pp.29-53
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• 1999

Today, the central government and an autonomies make an attempt to contracting out, restructuring, and renaming for public libraries in Korea. These attempts are plot for a disorganization of public libraries. The purpose of this study is to analyze an entity of the plot and to extricate from the disorganization crisis. Based of the analysis, the best alternatives to extricate the crisis are reinforcing the basis of popular support, establishing the identity for public library, finding out opposing logic, taking a legal actions, pressing for a formation of local committee of library development, and overthrowing the confusion of library administrative system.