• The Korean Journal of Applied Statistics
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• v.24 no.2
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• pp.239-251
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• 2011

The need for statistical analysis to discern the existence and the type of international business comovement has increased as business and economic variations in one country is directly transmitted to business and financial market conditions in another without a long lag. This study performs the statistical tests for th locomotive hypothesis to understand the structural character of the long-run mechanism among Korea-US current and future business movements and the domestic stock market. The U.S. future business prospect, rather than the US current and the domestic current and future business conditions, appears to signi cantl a ect the domestic stock market movement.

• Korean Journal of Health Education and Promotion
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• v.15 no.2
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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.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.19 no.4
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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.

• Culinary science and hospitality research
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• v.23 no.8
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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.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.43 no.3 s.309
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• pp.34-42
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• 2006

In general, almost information is stored in only a few wavelet coefficients. This sparse characteristic of wavelet coefficient can be modeled by the mixture of Gaussian probability density function and point mass at zero, and denoising for this prior model is peformed by using Bayesian estimation. In this paper, we propose a method of parameter estimation for denoising using hypothesis-testing problem. Hypothesis-testing problem is applied to variance of wavelet coefficient, and $X^2$-test is used. Simulation results show our method outperforms about 0.3dB higher PSNR(peak signal-to-noise ratio) gains compared to the states-of-art denoising methods when using orthogonal wavelets.

• The Korean Journal of Applied Statistics
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• v.26 no.4
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• pp.595-610
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• 2013

Testing of order-restricted alternative hypothesis in $2{\times}k$ contingency tables can be applied to various fields of medicine, sociology, and business administration. Most testing methods have been developed based on a large sample theory. In the case of a small sample size or unbalanced sample size, the Type I error rate of the testing method (based on a large sample theory) is very different from the target point of 5%. In this paper, the exact testing method is introduced in regards to the testing of an order-restricted alternative hypothesis in categorical data (particularly if a small sample size or extreme unbalanced data). Power and exact p-value are calculated, respectively.

• The Journal of Asian Finance, Economics and Business
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• v.5 no.4
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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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• v.13 no.4
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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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• v.11 no.3
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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.

• Korean Journal of Logic
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• v.23 no.2
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• pp.71-115
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• 2020

It seems certain that even if the same evidence is in itself given for any hypotheses, the way how it is obtained makes some differences in its support degree of them. In this respect, it is worth paying our attention to Mayo's conception of "severe test" and her technical development of it, which are just concerned with the procedures of getting evidence. Nonetheless, there have been criticisms against her theory from various respects. Among them, here this paper focuses on those especially raised by Jung (2018) and Iseda (1999). And it attempts to defend Mayo's theory on behalf of her against their critiques. For this purpose, the paper also proposes particularly a new concept of what is called the "mechanism generating an evidence-hypothesis". On the way, Mayo's own faults are revealed as well.