• Title/Summary/Keyword: 부집단

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Mining of Subspace Contrasting Sample Groups in Microarray Data (마이크로어레이 데이터의 부공간 대조 샘플집단 마이닝)

  • Lee, Kyung-Mi;Lee, Keon-Myung
    • Journal of the Korean Institute of Intelligent Systems
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    • v.21 no.5
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    • pp.569-574
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    • 2011
  • In this paper, we introduce the subspace contrasting group identification problem and propose an algorithm to solve the problem. In order to identify contrasting groups, the algorithm first determines two groups of which attribute values are in one of the contrasting ranges specified by the analyst, and searches for the contrasting groups while increasing the dimension of subspaces with an association rule mining strategy. Because the dimension of microarray data is likely to be tens of thousands, it is burdensome to find all contrasting groups over all possible subspaces by query generation. It is very useful in the sense that the proposed method allows to find those contrasting groups without analyst's involvement.

A New Hybrid Evolutionary Programming Technique Using Sub-populations with Different Evolutionary Behaviors and Its Application to Camera Calibration (서로 다른 진화 특성을 가지는 부집단들을 사용한 새로운 하이브리드 진화 프로그래밍 기법과 카메라 보정 응용)

  • 조현중;오세영;최두현
    • Journal of the Korean Institute of Telematics and Electronics C
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    • v.35C no.9
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    • pp.81-92
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    • 1998
  • A new hybrid technique using several sub-populations having completely different evolutionary behaviors is proposed to increase the possibility to quickly find the global optimum of continuous optimization problem. It has three sub-populations. Two NPOSA algorithms showing good performance in the problem having a rugged fitness function are applied to two sub-populations and a self-adaptive evolutionary algorithm to the other sub-population. Sub-populations evolve in different manners and the interaction among these sub-populations lead to the global optimum quickly. The efficiency of this technique is verified through benchmark test functions. Finally, the algorithm with three sub-populations has been applied to seek for the optimal camera calibration parameters. After an error function has been defined using measured feature points of a calibration block, it has been shown that the algorithm searches for the camera parameters that minimize the error function.

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Effects of Group Art Therapy on Self-esteem and Stress of School Maladjusted Adolescents (집단미술치료가 학교부적응 청소년의 자아존중감과 스트레스에 미치는 효과)

  • Kim, Eun-Ji;Kim, Mi-Hyun
    • Journal of the Korea Convergence Society
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    • v.12 no.11
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    • pp.143-154
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    • 2021
  • The purpose of this study is to investigate the effect of applying a group art therapy program on self-esteem and stress for adolescents who are maladjusted to school. The subjects of this study were 6 school maladjusted adolescents enrolled in the second year of B middle school in A region, and the period was from May 12 to June 9, 2021, twice a week, for a total of 10 sessions of 60 minutes each. As a research tool, the Self-Esteem Scale(SEI) and the Person-In-The-Rain(PITR) were examined to observe the students. For data analysis, Wilcoxon test was conducted to examine the change in self-esteem, and the Person-In-The-Rain(PITR) was qualitatively analyzed to observe stress by two art therapists. The results of this study were first, that the group art therapy program had a significant effect on improving the self-esteem of adolescents and second, the group art therapy program was effective in reducing the stress. In conclusion, group art therapy can be seen to help improve self-esteem and reduce stress in school maladjusted adolescents.

A Study on The Causes and Outcomes of Relationship-Orientedness between Businesses (관계지향성의 구성요인 및 원인과 성과에 관한 연구)

  • 최낙환;김영아;이호정
    • Asia Marketing Journal
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    • v.3 no.3
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    • pp.1-24
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    • 2001
  • 본 연구는 자원의존이론, 거래비용이론, 관계계약이론 등의 선행연구를 검토하여 관계지향성의 원인과 성과를 밝히고자 하였다. 먼저 구매기업과 공급기업간의 행동적 관계지향요인과 관계지향성 분석을 실시하였다. 행동적 관계지향요인으로는 정보교환, 조화노력, 행동적 규범, 업무결속을 들고, 관계지향성 분석을 위해 군집분석을 실시하였다. 연구표본에는 C지역의 전문건설업체를 대상으로 500부의 설문지를 배포, 그 중 185부를 회수하여, 적합한 설문 140부가 사용되었다. 군집분석결과 관계지향성 집단은 정보교환, 조화 노력, 협동규범 수용, 업무결속이 모두 높게 나타났고, 비관계지향성 집단은 정보교환, 조화노력, 협동규범 수용, 업무결속이 모두 낮게 나타나 기업간의 관계지향성을 의미있는 2개의 집단으로 나눌 수 있었다. 둘째, 기업간 관계지향성의 영향요인으로 환경의 역동성, 대안의 이용가능성, 공급의 중요성, 상호호혜전략, 신뢰성을 검토하였다. 본 연구에서 선정한 관계지향성에 대한 영향요인들이 관계지향집단과 비관계지향집단으로 분류하는데 얼마나 유용하게 이용될 수 있는가를 알아보기 위해 판별분석을 실시하였다. 관계지향집단과 비관계지향집단의 분류에 환경의 역동성, 대안의 이용가능성, 공급의 중요성은 영향이 없는 것으로 나타났으며, 호혜전략, 신뢰성은 의미가 있는 것으로 나타났다. 셋째, 기업간 관계지향성의 성과로서 실현경쟁우위와 관계유지의도를 검토하였다. 관계지향성이 성과에 어떠한 영향을 미치는가를 검증하기 위해 MANOVA(multivariatee analysis of variance)분석을 실시하였다. 실증 결과, 관계 정도가 높은 집단이 관계 정도가 낮은 집단보다 실현 경쟁우위수준을 높게 지각하고 관계를 유지하려는 의도가 높은 것으로 나타났다.

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The Difference in Pupil Size Responding to Cognitive Load and Emotional Arousal Questions between Guilty and Innocent Groups (유죄 및 무죄 집단 간 인지적 부하 및 정서적 각성 질문에 따른 동공크기의 변화의 차이)

  • Cho, Ara;Kim, Kiho;Lee, Jang-Han
    • Korean Journal of Forensic Psychology
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    • v.11 no.2
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    • pp.155-171
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    • 2020
  • The purpose of this study is to examine the effects of emotional arousal and cognitive load on pupil diameter during a lie detection interview. The guilty group (n = 30) committed a mock crime (i.e., stealing cash) and the innocent group (n = 30) performed a mission (i.e., sending a message) in the research assistant's office. After that, their pupil size was measured using a wearable eye-tracker during the interview. The interview questions were classified with the three cognitive load, three emotional arousal, and three neutral questions. The results indicate that the main effects of group and time were not significant, but the interaction between group and time was significant. It means that when answering cognitive load questions, the guilty group showed larger increase in pupil diameter than the innocent group. The present study suggests that inducing cognitive load is more effective than inducing emotional arousal during an interview when using pupil diameter as an index of deception, and it is expected to improve the accuracy of lie detection.

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Influences of Student's Major Satisfaction on Job-seeking Stress - Focusing on Differences of IPP Experienced, Nonexperienced Groups - (대학생의 전공만족도가 취업스트레스에 미치는 영향 - IPP형 장기현장실습 경험 유무 집단 간 차이를 중심으로 -)

  • Chung, Byoung-gyu
    • Journal of Venture Innovation
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    • v.3 no.1
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    • pp.87-99
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    • 2020
  • This study empirical analysed how student's major satisfaction affected job-seeking stress. It also analysed the mean differences of major satisfaction and job-seeking stress between two groups(IPP experienced, non-experienced groups). 200 data were collected from the field survey questionnaires administered to a quota sample of university students who had IPP experience or non-experience. For hypothesis testing, the IBM SPSS Statistics 24.0 was used. As a result of empirical research analysis, first, it was found that major satisfaction had a negative effect on job-seeking stress. Among major satisfaction sub categories, subject satisfaction had negative effects on cognitive and physical stress, and relationship satisfaction also had negative effects on cognitive and physical stress. On the other hand, general satisfaction had a negative effect only on emotional stress. Second, there was a significant difference between major satisfaction and job-seeking stress. Major satisfaction of IPP experience group was high, and the job-seeking stress was low. Third, in the group of students who practiced IPP, subject satisfaction had a negative effect on emotional and physical stress, whereas subject satisfaction in the group of students who did not practice IPP had no significant effect on job-seekingt stress. In the case of relationship satisfaction, only non-practice groups had a negative effect on cognitive stress and physical stress. In the case of general satisfaction, only the IPP group showed negative effects on emotional stress. The results of this study supported the preceding studies that major satisfaction had an effect on job-seeking stress, and the study was meaningful in that it confirmed that there were differences between the IPP experienced, non-experienced groups. Based on this results, academic and practical implications were suggested.

한국기업의 기업탈퇴(企業脫退)(Divestiture)중 자산처분(資産處分)(Sell-off)이 주주부에 미치는 영향 - 영업일부양도(營業一部讓渡)를 중심(中心)으로 -

  • Kim, Won-Gi;Park, Chun-Gwang
    • The Korean Journal of Financial Studies
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    • v.1 no.2
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    • pp.119-152
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    • 1994
  • 본 연구는 한국기업들이 기업자산을 제 3자 혹은 신설기업으로 탈퇴시키므로써, 즉 자산, 제품생산라인, 자회사, 사업부 등을 현금, 증권 등으로 교환하므로써 발생된사건, 특히 자산중 영업일부를 양도한 기업에 있어 주가수익율의 영향을 분석하고자 한다. 분석결과 영업일부를 양도한 기업들은 (+)의 평균초과수익율을 얻는 것으로 나타났다. 이것은 한국증권시장에서 영업(營業) 일부양도(一部讓渡)가 양도기업 株主(주주)의 부(富), 즉 주식(株式)의 시장가치에 정(+)의 영향을 미친다는 것을 의미한다. 그리고 영업 일부양도 후 후속 재무구조 개선집단과 악화 집단간의 시장반응에 있어 악화집단이 오히려 더 큰 정(+)의 시장반응을 보이며 유의적인 큰 차이가 존재했으며, 또한 후속 EPS 증가집단과 EPS 감소집단에 있어서 후속 EPS 증가기업이 더 큰 정(+)의 시장반응을 보이며 유의적인 차이가 존재했다. 이러한 사실로 미루어 볼때 영업(營業) 일부양도(一部讓渡)는 투자자들에 의해 재무구조개선 및 비수익성 영업일부의 양도를 통한 기업수익성(企業收益性)의 증대라는 관점에서 크게 받아들여 지고 있다는 것을 암시해 준다.

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A Moderating Effect of Help-Seeking in the Relationship between Violence in sports, Depression, and Intention to Sport Continuance among Female Athletes (여성선수의 운동부 내 폭력 피해경험과 우울, 운동지속의사의 관계에서 도움요청(Help-Seeking)의 완충효과)

  • Kim, Jae Yop;Lee, Jeen Suk;Choi, Sun Ah
    • Korean Journal of Social Welfare Studies
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    • v.43 no.1
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    • pp.59-87
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    • 2012
  • The purpose of this study is to understand the effect of violence in sports on intention to sport continuance among female athletes and to analysis the mediating effect of depression and the difference groups according to help-seeking. In order to accomplish these purposes, this study surveyed from September to October in 2010. The final subjects in the analysis were 345 female athletes who are belong to school athletic team, professional team, business team, and national team. The data were analyzed with SPSS 18.0 and AMOS 10.0 for conducting multiple group analysis. The main results of this study are as follows; First, those who were suffered by emotional violence were 62.4%; those who are damaged by physical violence were 28.6% among the participants in this study. In case of intention to sport continuance, when measured by a rule of five, was average 3.15. 29.9% of the female athletes scored above the standard of depression. Second, depression turned out to have a partial mediating effect within the relationship where violence in sports has effect on intention to sport continuance. Third, between experimental and non-experimental group on help-seeking among female athletes, there was a statistically significant difference in the structural relationship. This means that help-seeking has moderating effect within the path of violence in sports affecting depression. Based on the results, this study suggested that there is a strong need for intervention for the both prevention and cure of the sports violence. It is necessary to develop preventive programs and coping strategies on female athletes' depression and intention to sport continuance.

The Effects of Solution-focused Group Art Therapy on School Life Adjustment of the Maladjusted Adolescents (해결중심 집단미술치료가 학교부적응 청소년의 학교생활적응에 미치는 효과)

  • Yang, Jee-Won;Kim, Hyung-Mo
    • The Journal of the Korea Contents Association
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    • v.15 no.5
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    • pp.661-673
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    • 2015
  • This study is about the effects of the solution-focused group art therapy which was implemented for school maladjusted adolescents. The pre-test was conducted for 30 students who had difficulties to adapt school life in K middle school at K city, Gyeonggi province. 20 out of the 30 students were chosen to the participants for this study and randomly divided into an experimental group and control group, with 10 in each group. The experimental group received a 12 session solution-focused group art therapy including pre- and post-tests. This study found that the solution-focused group art therapy program improved the school life adaptation competency of the participants. In conclusion, the findings suggest that the solution-focused group art therapy can be a good approach to help adolescents to improve their school life adaptation ability.