• 응용통계연구
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• 제24권2호
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• pp.239-251
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• 2011

국가 간 경기 동조화 현장은 한 나라의 경기변동이 긴 시차를 두지 않고 관련국의 경기와 금융시장의 변동으로 직결되면서 동반 이동이 어떤 형태를 보이는지에 대한 통계적 분석의 필요성이 중대하고 있다. 본 연구에서는 동조화 현상과 파급효과에 대한 견인차 가설에 입각해 규모가 큰 경제가 작은 규모 국가의 변동을 유발하는지의 여부와 성향을 파악하고자 한 미 양국의 현재와 미래의 경기동향 및 주식시장 간 장기적 역학관계와 구조적 성향에 대해 통계적으로 검정해 보았다. 국내 주식시장에는 국내 경기동향이나 미국의 현 경기여건보다는 미국의 미래 경기전망이 유의한 영향을 미치는 것으로 나타났다.

• 보건교육건강증진학회지
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• 제15권2호
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• pp.55-66
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• 1998

The purpose of this study was to test whether adhesive taping therapy, one of rehabilitation, helps to relieve chronic low back pain. Sample were selected from 35 outpatients at oriental medicine hospital in the period from April 20 to June 20, 1998. The research design was one-group pretest - posttest design. The pretest included measuring discomfort depending on the scope and types of a range of motion, and their pain by their activity of daily living(ADL). In this research design, a treatment was to expose adhesive taping therapy to samples. The posttest included remeasuring of their discomfort and pain by ADL. The results of this study was as follows: Hypothesis I was that the discomfort score of the post-treatment group had lower than does that of the pre-treatment group. This study accepted the hypothesis (t=2.70, p=.015). Hypothesis II was that the post-treatment group had the pain score by ADL lower than does the pre-treatment group. Empirical results showed statistical significance(t=4.53, p=.000). In summary, the effect measured by the discomfort with a visual analog scale was statistically significant. The degree of pain according to postures in ADL also showed statistical significance. Consequently, these findings showed that the adhesive taping therapy was effective to alleviation of chronic low back pain.

• 기본간호학회지
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• 제19권4호
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• pp.416-424
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• 2012

Purpose: This study was done to identify the effects of the BeHaS exercise program consisting of exercise, education, and cognitive supports on the hand strength, depression and life satisfaction in institutionalized elderly people with CVA. Method: A quasi-experimental design with an experimental group (n=18) and a control group (n=18) was used. The elders in the experimental group participated in the program once a week for eight weeks. Data were analyzed using descriptive statistics, Chi-square and t-test with SPSS/Win 18.0. Results: Hypothesis 1 was supported as the hand strength of the elders in experimental group significantly increased compared to those in the control group. Hypothesis 2 was also supported as depression scores for elders in the experimental group significantly decreased compared to those in the control group. Hypothesis 3 was supported as life satisfaction scores for elders in the experimental group significantly increased compared to those in the control group. Conclusion: The results of this study indicate that the BeHaS exercise program can play a useful role in improving depression and life satisfaction in institutionalized elderly people with CVA.

• 한국조리학회지
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• 제23권8호
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• pp.27-39
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• 2017

This study was to examine how consumption value of female consumers affects impulse consumption and purchase satisfaction when they buy bakery goods, present specific determinant factors that affect them, and identify its influencing factors. The survey was conducted with those who have bought bakery goods of female consumers in Seoul and Kyonggi area, using a convenience sampling method. After a total of 400 responses was collected, 366 responses were included for the multiple regression analyses in order to test the hypotheses. To summarize findings from this study, analysis of the first hypothesis showed that "emotional impulse buying," "stimulating impulse buying," "reminder impulse buying," and "situational impulse buying" among impulse buying factors in consumption value factors had positive effects. The second hypothesis analyzed that "emotional impulse buying," "stimulating impulse buying," and "situational impulse buying" gave positive impacts on "purchase satisfaction," while "reminder impulse buying" had no influence. Analysis of the third hypothesis demonstrated that "consumption value" had positive effects on "purchase satisfaction." These findings were significant to examine consumption value that show the consuming pattern of consumers, analyze influencing factors on impulse buying of female consumers, and further present marketing strategies used for advantageous tools with competing stores to bakery owners or marketers.

• 대한전자공학회논문지SP
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• 제43권3호
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• pp.34-42
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• 2006

일반적으로 웨이블릿 계수는 적은 수의 계수에 거의 대부분의 정보가 저장되어 있다. 이러한 웨이블릿 계수의 성긴 특성은 가우스 확률밀도 함수와 영점에서의 점 질량(point mass) 함수의 혼합으로 모델링될 수 있으며, 이 프라이어(prior) 모델에 대한 베이지안 추정법으로 잡음 제거를 수행한다. 본 논문에서는 가설-검증 기법을 이용하여 잡음 제거를 위한 파라미터를 추정하는 방법을 제안한다. 가설-검증은 관찰된 웨이블릿 계수의 분산에 적용되며, $X^2$-검증을 사용한다. 모의실험 결과를 통하여 본 논문의 방법이 직교 웨이블릿 변환을 사용한 최신의 잡음 제거 방법보다 대략 0.3dB 정도 우수한 PSNR(peak signal-to-noise ratio) 성능을 나타낸다.

• 응용통계연구
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• 제26권4호
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• pp.595-610
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• 2013

범주형 자료에서 순서화된 대립가설을 검정하는 경우는 의학 사회학 경영학 등 다양한 응용분야에서 발생한다. 이러한 검정 방법은 대부분 대표본이론에 근거하여 개발되었다. 하지만 표본크기가 작거나 표본크기가 매우 불균등한 경우 대표본이론에 근거한 검정방법의 제 1종 오류 확률은 목표로 하는 5%와 멀어지는 경우가 많이 발생한다. 본 논문에서는 범주형 자료에서 순서화된 대립가설을 검정하는 경우 표본크기가 작거나 표본크기가 매우 불균등한 경우에 사용될 수 있는 정확검정방법을 소개하고 이에 대한 검정력 및 정확 p-value를 제시할 것이다.

• The Journal of Asian Finance, Economics and Business
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• 제5권4호
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• pp.135-147
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• 2018

There has been a recent increase in the interest towards founding companies and in line with the South Korean Government's policy on start-up support, discussions are rife about the effect of entrepreneurship on the management and performances of these companies. To enhance the competitiveness of SMEs, it is expedient to acquire and deploy consistent entrepreneurship, differentiate corporate resources, ensure the appropriate utilization of resources and the integration of such factors in response to the changing environment. This research examines relationships among entrepreneurship, three components of corporate capabilities, dynamic capability and technical performance based on resource-based view and the dynamic capability theory. The authors also investigate the moderating role of corporate life cycle. To test the hypothesis, we conducted a survey on 352 technologies -innovative SMEs located in South Korea via professional research institutes. The findings confirm the hypothesis that SMEs' entrepreneurship has a positive effect on three kinds of corporate capabilities (e.g., marketing, R&D, operations capability), and it had a positive effect on dynamic capability, whiles dynamic capability also had an influence on technical performances. The findings also confirmed the hypothesis that corporate life cycle moderates the relationship between dynamic capability and technical performances respectively. The research implications for both practitioners and academicians are discussed.

• Design & Manufacturing
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• 제13권4호
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• pp.51-56
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• 2019

Due to industrial development, the importance of GD&T tolerance is growing day by day. Roundness measurement means the size deviated from the ideal circle. Roundness evaluation methods include LSCI, MZCI, MCCI, and MICI. Generally, A is used a lot at industrial evaluation. In this experiment, we studied the variations in table velocity, filter values, and detector angles, which can cause errors in roundness measurements. The measurement conditions were table speeds of 10, 30 and 60 mm/s, probe angles of 10, 20 and 30 degrees and frequency filter settings of 15, 150 and 500 upr and The number of experiments was measured 30 and the average value was chosen as a representative value. The hypothesis test showed that the p-value for the frequency filter was greater than 0.05, and the experiment rejected the null hypothesis and adopted the alternative hypothesis.

• Management Science and Financial Engineering
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• 제11권3호
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• pp.109-124
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• 2005

The study on the critical success factors (CSF) for electronic commerce systems has been a hot topic in both academe and industry. On the basis of reviewing papers on CSF and analyzing their problems, this paper designs the initial assessment indictors and website features and functions influencing EC success. Using Delphi survey and data analysis, we get the five important assessment indictors and seven important web features and functions. Furthermore, the hypothesis of CSF model is proposed. Finally, we conduct a survey on the Chinese Publishing Industry to test the hypothesis. The result shows that the hypothesis is partly supported, which means useful and understandable information, complete and timely information, credible and accurate information, all product-related information are the critical success factors for EC publishing industry. This research not only impels EC research in China, but also has instructional effect on the implementation of EC for enterprises to increase the success rate of EC.

• 논리연구
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• 제23권2호
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• pp.71-115
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• 2020

어느 가설에 대해 동일한 증거라 할지라도 그 증거가 어떤 방식으로 얻어진 것인가에 따라 분명 해당 가설에 대한 지지의 정도가 다른 것으로 보인다. 이러한 점에서 증거를 얻는 절차에 관한 메이요의 '엄격한 시험' 개념과 그에 대한 기법의 개발은 주목할 만하다. 그럼에도 불구하고 그에 대한 비판들이 여러 측면에서 제기되었는데, 여기서는 그 가운데 특별히 정동욱 (2018)과 Iseda (1999)에서 제기된 비판에 초점을 맞춰, 메이요를 대신해 그에 답해 보기로 한다. 이를 위해 본 논문에서는 특히 '증거-가설의 메커니즘'이라는 새로운 개념이 제안된다. 이 과정에서 또한 메이요 자신의 잘못에 대해서도 지적하게 될 것이다.