• Journal of Korean Society for Quality Management
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• v.34 no.1
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• pp.27-33
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• 2006

In this paper, an effective method for identifying influential main effects and interactions in the 2-level factorial designs is suggested by exploiting the resolution V designs developed by Kim(1992). For analysis of such designs, we employ the Bayesian approach for easy and clear identification of influential effects in the half normal probability plot.

• Journal of Korean Medicine for Obesity Research
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• v.13 no.2
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• pp.51-57
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• 2013

Objectives: This study was conducted to analyze anti-obesity effects of the main single medicinal herbs which have effects on obesity or metabolic syndrome. Methods: We selected the 8 main single medicinal herbs, and then 3 databases were searched using search words "obesity", and "each scientific name of selected 8 main herbs". Results and Conclusions: Only Ephedra sinica and Panax ginseng were analyzed through 3 methods, in vitro, animal studies and randomized controlled trial (RCT)s, Ephedra sinica was shown weight loss effects in RCTs, but Panax ginseng couldn't. Other 6 selected medicinal herbs were not verified in RCTs, all had anti-obesity effects in high fat fed mice (or rats) and the others except for Radix notoginseng and Radix puerariae had inhibitory effects on lipid accumulation in 3T3-L1 cells.

• Culinary science and hospitality research
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• v.13 no.4
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• pp.57-66
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• 2007

The purpose of this study was to assess the effects of service quality, perceived sacrifice, food price and image on value. A total of 273 questionnaires were completed. MANOVA, ANOVA, and ANCOVA were used to measure the main effects and mediating effects of service quality and perceived sacrifice on the relationships among price, image, and value. The main effects of price on service quality, perceived sacrifice, and value were statistically significant. The main effects of image on service quality and value were statistically significant. As expected, when price, service quality, and perceived sacrifice regressed on the value, they were statistically significant. Moreover, when image, service quality, and perceived sacrifice regressed on the value, they had statistically significant effects on value. The results demonstrated that service quality played a mediating role in the relationship between price and value.

• Journal of the Korean Statistical Society
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• v.25 no.3
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• pp.419-432
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• 1996

When interactions are not present in a three-way layout, the lim-iting null distribution of the F statistic for testing main effects when applied to the rank-score transformed data is the same as the limiting null distribution of the usual F statistic when applied to the normal data. The simulation results exhibit that the rank transform test is robust with respect to significance level and powerful for testing main effects in a three-way factorial experiment.

• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.7 no.1
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• pp.119-119
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• 1998

The purpose of this study is to investigate the effects of operation factors of a typical main spindle system on the efficiency of machine tool. In this study. both static and dynamic analysis of typical main spindle system of the machine tool are performed using a finite element method. These finite element results are then used to predict the bearing stiffness. the amount of heat generation as well as the bearing life in the spindle system. Effects of material type of ball-bearing. bearing-lubricant type and main spindle bearing preload are examined.

• Korean Journal of Human Ecology
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• v.5 no.1
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• pp.28-41
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• 2002

This study investigated the effects of the high school students' self-efficacy, sex, and division of school upon their clothing fashionability and conspicuous consumption to understand a part of their clothing behaviors during adolescent period. Questionnaires were distributed to and collected from 575 male and female high school students attending academic and vocational high schools locating in Kwangju, Korea, from October 9 to October 14, 2000. The data were analyzed using descriptive statistics, factor analysis, MANOVA, and t-test. The results were as follows: 1. The main effects of the self-efficacy on the fashion interests and fashion knowledge were significant(p<.05, p<.01, respectively). 2. The main effects of the sex of respondents on the fashion interests and fashion knowledge were significant(p<.01, both). 3. The main effect of the self-efficacy on conspicuous consumption to demonstrate the economic status was significant (p<. 01). 4. The main effects of the sex of respondents on conspicuous consumption to high priced brand oriented was significant (p<. 01).

• Publications of The Korean Astronomical Society
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• v.1 no.1
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• pp.1-8
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• 1984

Under the context of Stein's linear theory of stellar models, the luminosity-effective temperature relationship is derived for contracting pre-main sequence stars which are losing mass, according to the empirical formula, given by Reimers (1975). The effects of mass loss on their evolution are investigated by calculating evolutionary tracks of 1. $1.5M_{\odot}$, $5M_{\odot}$, and $10M_{\odot}$, stars. Our calculations reveal that the effects of mass loss show up in the radiative equilibrium stage of the evolution. It is found that an increase of mass loss rate leads to delay the onset of radiative equilibrium, thus resulting in under-luminous main sequence stars. It is also noted that the mass loss prolongs the pre-main sequence life time. Detailed results of the calculations are discussed.

• Archives of Pharmacal Research
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• v.28 no.7
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• pp.765-769
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• 2005

The essential oil fraction of Ostericum koreanum was analyzed by GC-MS. Inhibiting activities of this oil and its main components were tested by the broth dilution assay and disk diffusion test against one antibiotic-susceptible and two resistant strains of Salmonella enteritidis and S. typhimurium, respectively. The GC-MS analysis revealed thirty-four compounds; the main components were $\alpha$-pinene (41.12%), $\rho$-cresol (17.99%) and 4-methylacetophenone (7.90%). The essential oil of O. koreanum and its main components were significantly effective against the tested antibiotic-susceptible strains as well as against the resistant strains of the two Salmonella species, with MICs (minimum inhibitory concentrations) ranging from 2 mg/mL to 16 mg/mL. The anti-Salmonella effects of the oils were dose-dependent on $M\"{u}ller-Hinton$ agar plates in this experiment. Additionally, checkerboard titer test results demonstrated significant combined effects of streptomycin and O. koreanum oil or cresol, one of the main components of this oil, against the two streptomycin resistant strains of S. typhimurium, with FICIs ranging from 0.12 to 0.37.

• Journal of the Korean Society for Precision Engineering
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• v.6 no.4
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• pp.136-144
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• 1989

This paper presents the vibrational characteristics of linear damped vibrational systems with a linear dynamic absorber. The amplitude ratios of main vibrational system are derived from the equation of motion for the system, and optimal natural frequency ratio and damping ratio of dynamic absorber are obtained by computer simu- lation, which minimize the amplitude ratio of main vibrational system for the whole range of the frequency ratio. And, the effects of the parameters on the amplitude ratios are investigated. As the results, the effect of the natural frequency ratio on the amplitude ratio of main vibrational system is more important than that of the damping ratio of dynamic absorber as damping ratio of main vibrational system becomes larger. For the case of large damping ration of main vibrational system becomes larger. For the case of large damping ratio of main vibration system, the amplitude ratios are not decreased dramationally in spite of inoreasing mass ratio.

• Proceedings of the Korea Water Resources Association Conference
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• 2001.05a
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• pp.152-157
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• 2001

No Abstract (See Full-text)