• Korean Journal of Culture and Social Issue
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• v.20 no.4
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• pp.281-305
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• 2014

This study investigated the relationship between older driver's safe driving behavior, driving mobility(amount of driving, assessment for driving-related physical ability, confidence for adaptation in driving situation, amount of social activity) and subjective well-being(life satisfaction, positive/negative affect). The data of these variables were collected by questionnaire method based on face-to-face interview. The results can be summarized as followings. First, the older driver who reported higher scores in the self-report safe driving behavior questionnaire tended to show higher level of subjective well-being and driving-based mobility. Second, all the sub-factors in the driving-based mobility questionnaire were positively related to life satisfaction, positive affect but negatively related to negative affect except amount of driving. Finally, it was found that both confidence for adaptation in driving situation and amount of social activity positively mediated the relationship between self-report safe driving behavior and life satisfaction and positive affect, but confidence for adaptation in driving situation negatively mediated the relationship between self-report safe driving behavior and negative affect, Implication and suggestion were discussed.

• Korean Journal of Culture and Social Issue
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• v.20 no.4
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• pp.415-441
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• 2014

The purpose of this study was to examine the cultural characteristics of Korean interpersonal relationships. A total of 45 preliminary items were selected through book and literature review about the characteristics of the Korean or Korean society in study 1. The first survey data were collected from the Korean university students. Through the item analysis and Exploratory Factor Analysis(EFA), 4 factors composed of 32 items were extracted. Four factors were found: 'friendly attitude, harmony, jeong(interpersonal affection), keeping relationship', and using content analysis, 20 items were refined. Study 2 was conducted with the data collected from the Korea adults. As the result of carrying out EFA and Confirmatory Factor Analysis(CFA), the final 17 items were fixed as an affective relationships scale of the Korean. And CFA were implemented to evaluate discriminative validity. Finally, the implications and limitations of this study were discussed.

• Korean Journal of Culture and Social Issue
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• v.19 no.2
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• pp.235-257
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• 2013

The purpose of this study is to develop the Leisure Obsession Scale and examine the validity of the scale. The Leisure Obsession Scale was developed and identified its validity by exploratory factor analysis, confirmatory factor analysis, and correlation analysis. The Leisure Obsession Scale consists of two factors, which are 'Leisure Preoccupation' and 'Leisure Stereotype'. Those two factors indicated the reasonable fit index by confirmatory factor analysis. In addition, this scale displayed discriminant validity via measurement of obsession, workaholism, leisure anxiety, and leisure constraint. Also, the results of criterion validation analysis shows that the Leisure Obsession Scale and its subscale are correlated with measure of age, leisure information searching, intention of participation to new leisure activities, and intention of increase in leisure time. Conceptualizing leisure obsession and exploring components of leisure obsession would be valuable for understanding the nature of leisure obsession and its effects on leisure satisfaction, and suggesting more effective psychological intervention in a diverse population.

• Journal of Venture Innovation
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• v.6 no.3
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• pp.203-220
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• 2023

This study conducted an empirical analysis of the factors affecting the job commitment of employees within a financial sales organization, focusing particularly on agile leadership and organizational justice. Agile leadership was subdivided into four components: adaptability, collaboration promotion, proficiency, and an agile approach, whereas organizational justice was broken down into distributive justice, procedural justice, and interactional justice. Data were gathered through an online survey, and 245 valid responses were subjected to hierarchical regression analysis. The results revealed a significant positive effect of distributive justice, interactional justice, adaptability, promotion of collaboration, and an agile approach on job commitment among the employees of the financial sales organization. However, the influence of proficiency, a component of agile leadership, and procedural justice, a dimension of organizational justice, did not prove to be statistically significant. The order of influence among the significant variables was found to be: adaptability, interactional justice, promotion of collaboration, distributive justice, and an agile approach. These findings confirmed the impact of agile leadership in financial sales organizations, traditionally viewed as conservative, and suggested practical implications for the financial sector to adapt in anticipation of the Fourth Industrial Revolution.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.11 no.1
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• pp.7-13
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• 2011

While the TCP throughput degradation problem in coded wireless mesh networks is well-known, few effective solutions have been proposed. Most schemes proposed attempts to mask packet reordering by ordering packets at a lower layer or to adjust a packet transmission rate to solve the scarcity problem of coding opportunities. Through the throughput comparison of traditional standard TCP variants, we show that losses and duplication of TCP acknowledgements in coded wireless mesh networks can impact throughput. In addition, we show that a TCP variant that does not rely on duplicate acknowledgements is more suitable for coded wireless mesh networks.

• The Korean Journal of Financial Management
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• v.16 no.2
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• pp.263-284
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• 1999

완전자본시장에서는 주가에 영향을 비치는 모든 정보가 신속하고 정확하게 주가에 반영될 것이므로 특정 주가나 지수가 다른 주가나 지수를 선행하는 일은 없을 것이다. 그러나 시장이 불완전한 경우 여러 가지 이유에 의해 주가나 지수의 선행성현상이 발생할 수 있다. 기존의 연구에서는 대부분 이러한 선행성의 문제를 기술적인 문제로 취급하고 있으나 Atchison, Butler 와 Simond(1987)가 지적하듯 이러한 선행성현상을 모두 기술적인 이유로 돌리기에는 어려운 점이 많다. 본 연구에서는 이러한 주가나 지수의 선행성문제를 거래비용이라는 경제적 이유로 설명하고자 한다. 대기업의 주식은 거래량이 많고 이에 따라 유동성비용이 낮은 반면 소기업의 주식은 거래량이 적고 유동성비용이 크다. 정보를 가진 투자자에게 유동성의 문제는 큰 의미를 갖는데 그 이유는 정보의 가치는 시간이 지남에 따라 급격히 감소하기 때문이다. 따라서 정보를 가진 투자자는 유동성이 큰 주식을 선호하며 이에 따라 유동성이 큰 대기업 주식에 정보가 더 빨리 반영되어 유동성이 큰 대기업 주식이 유동성이 작은 소기업 주식의 가격을 선행할 것이다. 본 연구에서는 이러한 가설을 토대로 자본금의 크기순으로 상위 15%정도의 기업의 대기업으로, 하위 15% 정도의 기업을 소기업으로 간주하여 주가수익률의 선행성검증을 실시한 결과 대기업의 주가수익률이 소기업의 주가수익률을 선행하는 것으로 나타났는데 이러한 현상은 산업별로도 거의 일관적으로 나타났다. 주가수익률의 선행성이 비거래효과에 의해 나타날 수도 있으므로 이리한 효과를 제거하고 검증해 보았는데 그 결과 역시 비거래효과를 제거하기 전과 큰 차이가 없었다.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.409-409
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• 2020

경제가 발전함에 따라 산업화 및 도시화로 인해 많은 지역에서 지속 가능한 수자원관리의 어려움을 겪고 있으며, 기후 및 환경 변화는 지표수의 증발을 증가시키고 강우 및 기타 수문학적 순환과정의 시기와 역학을 변화시킴으로써 물에 대한 스트레스를 높이는 등 다양한 문제가 발생하고 있다. 이러한 환경 변화로 인해 개인, 국가 등 전 세계가 여러 형태의 현실적 물 문제에 당면하고 있음에 따라 본 연구에서는 위와 같은 물 관련 문제를 평가할 수 있는 물 안보 평가 방법을 제시함으로써 국가차원의 수자원관리에서 발생하는 문제점에 대한 해결 방안을 모색하고자 하였다. 본 연구에서는 물 안보를 적절한 제도, 바람직한 거버넌스 등 물과 기타 요소 간의 연계성을 바탕으로 깨끗한 물과 적절한 위생 서비스를 사회구성원 모두에게 공평하게 제공하고, 인간 생명과 환경을 오염 및 물 관련 재해로부터 보호하며, 수생태계 보전과 회복을 달성하는 능력 등 4가지 분야로 정의하였다. 이러한 물 안보 상황을 평가하기 위해 1) 사회적 공평성(social equity), 2) 경제적 효율성(economic efficiency), 3) 환경 지속성(environmental sustainability), 4) 수재해 회복 탄력성(resilience to water-related disasters)과 같이 네 가지 핵심 분야로 구분하였으며, 4개 핵심분야의 특징을 반영한 14개 하위 지표를 선정하였다. 국가별 평가는 아시아 국가를 대상으로 진행하였으며, 본 연구가 제시한 물 안보의 정의와 평가 프레임워크를 기반으로 수자원 현황 및 문제점 등을 평가하고 향후 국가별 물 관리 정책의 방향성을 제시할 수 있을 것으로 기대된다.

• Annual Conference on Human and Language Technology
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• 2019.10a
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• pp.272-275
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• 2019

단어 중의성 해소 방법은 지식 정보를 활용하여 문제를 해결하는 지식 기반 방법과 각종 기계학습 모델을 이용하여 문제를 해결하는 지도학습 방법이 있다. 지도학습 방법은 높은 성능을 보이지만 대량의 정제된 학습 데이터가 필요하다. 반대로 지식 기반 방법은 대량의 정제된 학습데이터는 필요없지만 높은 성능을 기대할수 없다. 최근에는 이러한 문제를 보완하기 위해 지식내에 있는 정보와 정제된 학습데이터를 기계학습 모델에 학습하여 단어 중의성 해소 방법을 해결하고 있다. 가장 많이 활용하고 있는 지식 정보는 상위어(Hypernym)와 하위어(Hyponym), 동의어(Synonym)가 가지는 의미설명(Gloss)정보이다. 이 정보의 표상을 기존의 문장의 표상과 같이 활용하여 중의성 단어가 가지는 의미를 파악한다. 하지만 정확한 문장의 표상을 얻기 위해서는 단어의 표상을 잘 만들어줘야 하는데 기존의 방법론들은 모두 문장내의 문맥정보만을 파악하여 표현하였기 때문에 정확한 의미를 반영하는데 한계가 있었다. 본 논문에서는 의미정보와 문맥정보를 담은 단어의 표상정보를 만들기 위해 구문정보, 의미관계 그래프정보를 GCN(Graph Convolutional Network)를 활용하여 임베딩을 표현하였고, 기존의 모델에 반영하여 문맥정보만을 활용한 단어 표상보다 높은 성능을 보였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.4
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• pp.710-717
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• 2016

This study was progessed from March 3, 2015 to March 31 for purpose of evaluating the effects of the trauma-patient practice education using simulation on knowledge, satisfaction and problem-solving in paramedic students. To closely examine the adequacy of education for paramedic students in one university, a comparison was made by dividing 28 male and female students into two groups of experimental group with 14 students and control group with 14 students. The experimental group was carried out the practice education of the trauma-patient simulation using simulator. The control group was conducted the theoretical and practical education through a traditional instructor-led class. As a result of the research, the experimental group can be known to be significantly higher(t=2.09, p<.05) than the control group in the post-knowledge survey and satisfaction following the development in each educational method for 4 weeks. Also, in consequence of the variable-based correlation in the sub-factors of satisfaction, a correlation was shown between interest and clinical help or between interest and problem-solving ability(p<.05, p<.01). Based on the results of this study, it is considered that the simulation practice education in the emergency department is demanded and that the practice education will need to be continuously applied through developing a proper scenario.

• Journal of Gifted/Talented Education
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• v.26 no.3
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• pp.449-471
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• 2016

This study was conducted in order to investigate how a Problem-Based Learning (PBL) program titled(called) 'Designing Safe and Strong Bridge' effects scientifically gifted students' scientific attitude, scientific career orientation and leadership. The participants were 19 scientifically gifted students in the second grade in C high school in Gyeonggi province; they were selected by participation in the tri-level gifted students identification step. Before and after 14 units of the program, the participants were asked to take tests about scientific attitude, scientific career orientation and leadership and to write a review about the PBL program at the end. The major results of this study are as follows. First, participants' scientific attitude was statistically significantly improved after the PBL program (p<.05). In the sub-domain of this area, six parts excluding the part of openness were significantly developed. Second, the degree of scientific career orientation was statistically significantly improved after the PBL program (p<.05). All 4 sub-domains in the degree of scientific career were significantly developed. Third, all of leadership scores were statistically significantly increased after the PBL program (p<.05). In the first factor, the parts of inner and inter personal characteristics were significantly developed. According to their post-program opinions, participants developed in terms of all the secondary factors, such as ability of interpersonal relation, consideration for others and groups, responsibility for the task, confidence and vision, during the process of PBL problem-solving in the small group work.