• Journal of Society of Preventive Korean Medicine
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• v.19 no.2
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• pp.57-66
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• 2015

Objective : This study aims to investigate the priority of education needs of managerial competencies for Korean Medicine doctors. Method : Self-administered questionnaires were sent via on-line survey system to 4,107 Korean Medicine (KM) doctors who were registered in the Association of Korean Medicine and whose business places were in Seoul. The cognition of necessities, present levels, and future importance of managerial competencies were measured. To measure the degree of educational needs on health management, t-test and Borich method were used. Results : The response rate was 1.9%(79 persons) and 68 responses were included in the analysis. The cost-effectiveness studying ability and the public relations ability were the most important competencies. Analyzing the competency groups by t-test and Borich method, the marketing group was the most important competency group. Many KM doctors (53 persons; 68.9%) who answered this questionnaire expressed needs of the business administration course. Conclusion : KM doctors conceded the necessity of business competency to manage their hospitals or clinics. Academic institutions needs to consider the implementation of business administration courses for KM students in accordance with needs of the managerial competencies.

• Journal of the Korean Applied Science and Technology
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• v.37 no.4
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• pp.996-1007
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• 2020

The purpose of this study was to investigate the general characteristics, working condition, discrimination experience and job engagement of office workers and to examine the effect of discrimination experience on job engagement. This study was the secondary analysis of date from the fifth Korean Working Conditions Survey and the subjects included 6,718 office workers. Collected data were analyzed using descriptive statistics, x²-test, t-test, and complex samples general linear model(CSGLM). As a result, job engagement was high when they never experienced discrimination. Based on the results of this study, in order to improve job engagement of office workers, manage to prevent discrimination in the workplace should be included.

• Journal of Korean Physical Therapy Science
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• v.7 no.2
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• pp.697-709
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• 2000

The purpose of this study was to evaluate the effectiveness of ElectroMyoscope(Electro_Acuscope and Myopulse) in tissue repairing on fatigue quadriceps femoris(rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis). Subjects were female adult volunteers with (n=13) and without (n=5) chronic fatigue muscle pain. We needed to fatigue the rectus femoris by overusing of a Cybex machine exercise. We turned the Electro-Myoscope to treatment mode and treated with treatment probe on the fatigue muscle, then turned instrument back to EMG and took the reading. The results indicated that the reading after the treatment was lower than before the treatment. A two-tailed t-test and Chi square indicated significant results(P<.03). It appears that the Electro-Myoscope is effective in treatment on the fatigue muscle.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.3
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• pp.2219-2228
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• 2015

The proposed RDT(Reversed Double T) girder bridge is suitable to eco corridor, because of its cross section which resembles Korean alphabet vowel "ㅛ". The total height and cost of bridge would be reduced for its inner space containing some of plant soil. In this study, the performance of the RDT girder was assessed by comparing results of static test with those of nonlinear analysis. The cracking load of the RDT girder was evaluated more than two times of design load.

• Journal of the Korea Society for Simulation
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• v.21 no.4
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• pp.1-9
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• 2012

This paper suggests a two-phase look-ahead Banker's algorithm for efficient operation of capacitated automated production systems. The algorithm improves the ability of detecting safe states of the previous one by considering the possibility of processing each job to completion at once as well as partial movement between jobs. The improved performance of the proposed algorithm is testified by performing numerical experiment in terms of (i) detection rate of safe states and (ii) system throughput and verified by using paired t-test.

• Journal of Korean Public Health Nursing
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• v.6 no.1
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• pp.25-31
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• 1992

The purpose of this study was to investigate the relationship between perceived stress and exercise and sleeping of high school girls. For the survey, 1829 respondents were randomly selected from Seoul and local area. The survey was conducted from the 1st to the 14th of June, 1991 by the use of questionnaires made·after a pilot study. For the analysis, descriptive statistics were used by calculating frequencies, percentages and mean scores. t-test, ANOVA and Pearson's correlation coefficient were employed to test the differences and the statistical significance. The results of this study are summarized as follows: (1) 'There was no significant difference in stress level between the subjects who took exercise and who didn't take exercise. (2) Significant positive correlation was revealed between stress level and sleeping time. It means that a increase in stress level brought on increased sleeping time. (3) Residential makes the significant differences in terms of stress level. The stress level of Seoul students(3.0l) showed higher than that of local students(2.65). The results of the study lead us to the suggestion that, for the high school girls, the health education for stress management must be required. In addition, adolescents welfare work would be reached by supporting the group activity and sufficient leisure facilities.

• Journal of Environmental Science International
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• v.20 no.4
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• pp.493-500
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• 2011

This study investigates the relationship between Asian dust and asthma disease in Seoul, using data of Asian dust occurrences and the number of treatments for asthma between 2005 and 2008. The data include the number of treatments for asthma on the basic day paired with the average number of treatments for asthma on the compared days. The compared day is defined by the day of no Asian dust in same month and day of the week as the basic day, when Asian dust occurs. Also, the basic day is expanded to the day after three days from the day of Asian dust. The paired two sample t-test for the number of treatments for asthma on the basic day and the compared days revealed that the Asian dust occurrences are correlated with the asthma disease. The number of treatments for asthma is significantly increased on the one and two days after Asian dust occurs. On the other hand, there's no significant difference in the number of treatments for asthma between the days of Asian dust occurrence and the days of no Asian dust, which implies that people usually try not to go out when Asian dust occurs.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.30 no.8 s.251
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• pp.923-930
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• 2006

A Kriging model is a sort of approximation model and used as a deterministic model of a computationally expensive analysis or simulation. Although it has various advantages, it is difficult to assess the accuracy of the approximated model. It is generally known that a mean square error (MSE) obtained from the kriging model can't calculate statistically exact error bounds contrary to a response surface method, and a cross validation is mainly used. But the cross validation also has many uncertainties. Moreover, the cross validation can't be used when a maximum error is required in the given region. For solving this problem, we first proposed a modified mean square error which can consider relative errors. Using the modified mean square error, we developed the strategy of adding a new sample to the place that the MSE has the maximum when the MSE is used for the assessment of the kriging model. Finally, we offer guidelines for the use of the MSE which is obtained from the kriging model. Four test problems show that the proposed strategy is a proper method which can assess the accuracy of the kriging model. Based on the results of four test problems, a convergence coefficient of 0.01 is recommended for an exact function approximation.

• Korean Journal of Rural Living Science
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• v.10 no.2
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• pp.37-51
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• 1999

The objectives of this study were to understand the working stress of rural women and their coping strategies, and to provide basic data related with rural welfare policy. The data were obtained through 318 samples of rural women under sixty years old who work full-time at their farms with their husbands. The questionnaire employed Likert-type scale with four-point, and then the data were analyzed by statistical methods of frequency, percentage, mean score, analysis of variance, t-test and Duncan test through SAS program. The significance level was p ＜ .05. The results of this study are as follows ; 1) The average stress level of rural women was over 2.9 points out of 4. 2) The stress level showed meaningful correlation with such variables as age, education, perception on economic status, and recognition by their husbands and other family members. The rural women who are over forty years old, below high school, disregarded from their family members were marked high stress level. 3) The level of rural women's stress coping strategies was quite as low as 1.95 out of 4. 4) The level of coping strategies showed meaningful correlation with such socio-demographic variables as age, perception on economic status and job satisfaction level. Those who aged over 40, perceives low economic staus, lives together with husbands'parents, and shows “average” job satisfaction scored significantly lower coping strategy levels. 5) The level of stress didn't indicate significant relation with the type of coping strategy.

• Journal of Plant Biotechnology
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• v.30 no.2
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• pp.143-149
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• 2003

This experiment was carried out to confirm the stability of bar gene introduced into petunia plant through Agrobacerium-mediated transformation. Twenty-five transgenic plants T$_{0}$ plants, back cross (BC$_1$) populations to wild type and F$_1$plants between different T$_{0}$ plants were prepared, and polymerase chain reaction(PCR), PCR-Southern blot analysis, and field test with 0.1% Basta treatment were done. The results of PCR, PCR-Southern blot hybridization, and field test indicated that NPTII and bar gene introduced into the genome of petuina plants were stably transmitted to their progenies, and conferred the plants resistance to herbicide, Basta.sta.