• Communications for Statistical Applications and Methods
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• v.4 no.1
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• pp.167-175
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• 1997

확률화 블럭 계획법에서 동위회귀를 이용하여 우산형 대립가설에 대한 비모수검정법을 제안하고자 한다. 제안된 검정통계량은 Mack과 Wolfe (1981)의 통계량에서 처리들에 가중치를 준 형태가 되며, 동위회귀를 이용하여 확률변수인 가중치를 구하고 붓스트랩을 이용한 소표본에서 모의 실험을 통하여 몇가지 사례 및 분포에 대해 제안된 통계량의 검정력을 알아본다.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2005.04a
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• pp.166-169
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• 2005

질적인 속성을 양적인 계열로 전환하여 측정하는 방법으로서 설문의 최소 문항으로서 최대의 효과를 나타내기 위하여 한 항목을 k번 측정하여 평균과 $95\%$ 신뢰구간을 퍼지수로 한 데이터들을 리커트 척도로 활용하여 내분비방법에 의하여 검정을 하였다.

• Journal of Korea Society of Industrial Information Systems
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• v.1 no.1
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• pp.128-152
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• 1996

본 연구는 4년제 대학의 경영정보학과에서 개설해야 할 전공과목에 있어서 교수와 현업의 실무자간에 어떠한 인식의 차이가 있는가에 대하여 연구하였다. 특히 경영정보학과에서 개설해야 하는 전공과목의 우선순위, 전공구분(전공필수와 전공선택), 그리고 개설학년에 있어서 교수와 실무자간의 어느 정도의 인식 차이가 있는가에 대하여 실증적으로조사하였다. 이러한 연구의 목적을 달성하기 위하여 본 연구에서는 첫째로 경영정보학분야의 교과과정에 관한 기존의 연구에 대하여 간략하게 살펴보았다. 둘째, 연구 방법으로서 조사대상, 자료의 수집방법, 연구가설, 그리고 자료의 분석방법에 관하여 언급하였다. 셋째, 연구결과로서 표본의 특성, 주요 전공과목의 학년 및 전공별 분류, 그리고 가설검정의 결과에 대하여 구체적으로 논하였다. 특히 연구가설은 (1)전공과목의 우선순위에 관한가설, (2) 전공과목의 구분(전공필수, 전공선택)에 관한 가설, 그리고 (3) 전공과목의 개설학년에 관한 가설로 세분하여 구체적으로 검정하였다. 끝으로 , 본 연구의 결과를 요약하였고 향후 연구방향에 대하여 언급하였다.

• Journal of The Korean Association For Science Education
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• v.19 no.1
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• pp.117-127
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• 1999

The present study investigated Korean and the US college students' scientific reasoning skills involving hypothesis-testing skills and tested the hypothesis that hypothesis-testing skills are more advanced ones than other scientific reasoning skills investigated in this study. Seven hundred and seventy-four(774) Korean and five hundred and sixty-eight(568) the US students were sampled in university level. The Test of Scientific Reasoning was used as a scientific reasoning test. The test is consisted of two conservational reasoning, two proportional reasoning, one pendulum, two probability reasoning, two controlling variable, one correlational reasoning, and two hypothesis-testing reasoning tasks. Korean students showed a significant higher score in proportional and probability reasoning tasks than the US students. However, the Korean showed a significant lower score in conservation and correlation reasoning tasks than their American counterparts. Further, Korean and the US college students showed a notably poor performance in hypothesis-testing skills comparing with other scientific reasoning skills, which supported the hypothesis that hypothesis-testing skills are more advanced ones than other scientific reasoning skills. In addition, the Korean showed a severe deficiency in candle-burning task which required the skill that students have to design a scientific test-procedure to test theoretical hypotheses. This study also discussed on the educational implications of the results of the present study.

• The Journal of the Korea Contents Association
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• v.8 no.9
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• pp.204-217
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• 2008

This study is designed for the purpose to provide realistic way for the increasing of organizational citizenship behavior(OCB) through the experimental analysis regarding the mediating role of variables of trust. It also aimed to find out the effect that main subordinate variables of transformational leadership and empowerment leadership are influenced on the subordinate variables of organizational citizenship behavior. The result of study is summarized as followings. First, individual consideration of transformational leadership has a positive effect on the knowledge based trust.. It also impact of empowerment leadership has a positive effect on the knowledge based trust. On the other hand ,analysis show the knowledge based trust has a positive effect to altruism, civic virtue and sportsmanship of OCB. Second, individual consideration of transformational leadership has no effect to altruism, civic virtue and sportsmanship of OCB. The impact of empowerment leadership has a positive effect only on the civic virtue, other two hypothesis are not selected due to ineffective factors. The result, accordingly, of this study indicate that the knowledge based trust has a mediating role between leadership(transformational, empowerment leadership) and organizational citizenship behavior.

• Journal of the Korean Institute of Intelligent Systems
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• v.21 no.1
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• pp.25-28
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• 2011

In this paper, we study some properties of condition for fuzzy data, agrement index by ratio of area and the uniformly most powerful fuzzy test of hypothesis. Also, we suggest a confidence bound for uniformly most powerful fuzzy test. For illustration, we take the most powerful critical fuzzy region from exponential distribution by likelihood ratio and test the hypothesis of ${\chi}^2$-distribution by agreement index.

• Environmental and Resource Economics Review
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• v.19 no.3
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• pp.571-595
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• 2010

This research applies an panel data stationarity and stochastic convergence test developed by Carrion-i-Silvestre et al. (2005), which has the advantage of considering multiple structural breaks and the presence of cross-section dependence in order to investigate the hypothesis that relative emission $CO_2$ per capita stochastically converge for 11 Asian countries from 1971~2007. We find that relative emission $CO_2$ per capita is stationary after the structural breaks and cross-section dependence are introduced into the model. We also investigate whether Environmental Kuznets Curve (EKC) hypothesis exists in 11 Asian countries. For EKC test, using the panel cointegration tests of Banerjee and Carrion-i-Silvestre (2006) and Westerlund and Edgerton(2007), we find that relative emission $CO_2$ per capita and relative GDP per capita are cointegrated. However EKC hypothesis in 11 Asian countries is not supported.

• The Korean Journal of Applied Statistics
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• v.3 no.1
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• pp.11-25
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• 1990

The objective of this paper is to propose a nonparametric distribution-free test for ordered alternatives in k crossed factor designs by using the concepts of combined factor and within-blocks ranks. We investigate the asymptotic normality of the proposed test statistic and the Pitman efficiencies. We also compared the small empirical powers of the tests considered in this paper by Monte Carlo study. Thus we can conclude that the proposed test is efficient and robust for the underlying distribution.

• Journal of the Korean Institute of Intelligent Systems
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• v.17 no.5
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• pp.614-618
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• 2007

We propose some properties of fuzzy p-value and fuzzy significance level to the fuzzy hypotheses testing for vague response data with reflected correlation in survey research, Appling the principle of agreement index, we suggest the methods for fuzzy hypothesis testing by fuzzy rejection region.

• Communications for Statistical Applications and Methods
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• v.3 no.3
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• pp.169-178
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• 1996

일반적인 실험군과 대조군의 척도모수에 대한 가설을 Orban과 Wolfe(1982)가 도입한 placement를 이용하여 비모수적 검정법을 제안하였다. 위치모수를 알고 있는 경우에 제안된 통계량의 귀무가설하에서의 평균과 분산 그리고 반복점근분포(iterative asymptotic distribution)를 구하였고 기존의 검정법들과 소표본 모의실험을 통하여 실험 유의수준과 실험검정력을 비교하였다.