• Proceedings of the KSRS Conference
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• 2004.10a
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• pp.162-165
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• 2004

The authors' previous study found an interannual covariability between actual evapotranspiration (ET) and the Normalized Difference Vegetation Index (NDVI) over northern Asia. This result suggested that vegetation controls interannual variation in ET. In this prior study, NDVI data from the Pathfinder AVHRR Land (PAL) dataset were analyzed. However, studies of NDVI interannual change are subject to uncertainty, because NDVI data often contain errors associated with sensor- and atmosphere-related effects. This study is aimed toward reducing this uncertainty by employing NDVI dataset, from the Global Inventory Monitoring and Modeling Studies (GIMMS) group, in addition to PAL. The analysis was carried out for the northern Asia region from 1982 to 2000. 19-year interannual change in PAL-NDVI and GIMMS-NDVI were both compared with interannual change in model-assimilated ET. Although the correlation coefficient between GIMMS-NDVI and ET is slightly less than for PAL-NDVI and ET, for both NDVI datasets the annual maximum correlation with ET occurs in June, which is near the central period of the growing season. A significant positive correlation between GIMMS-NDVI and ET was observed over most of the vegetated land area in June as well as PAL-NDVI and ET. These results reinforce the authors' prior research that indicates the control of interannual change in ET is dominated by interannual change in vegetation activity.

• Journal of Korean Society of Water and Wastewater
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• v.21 no.5
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• pp.589-599
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• 2007

This study was conducted to investigated the removal efficiency of BOD and nutrient for the treatment of low strength municipal wastewater by a biological nutrient removal system. In this experiment, the effect of operating parameter including HRT of 7.0hr, BOD/TN ratios of 2.62~4.08, internal recycle of 50~300%, and return sludge of 50~100%, were studied during winter season. Efficiencies of organic matter and T-P removal and denitrification were not significantly affected by the change of temperature in winter season. However, the specific nitrification rate and nitrification efficiency decreased at low temperature. Besides, denitrification efficiencies increased with increasing BOD/TN ratios. It was also found that the internal recycle and return sludge ratio below 50% is required for the effective denitrification of low strength municipal wastewater. With operating mode 4 of the optimum, the effluent BOD, T-N and T-P concentration were obtained to average 5.8, 14.6, and 0.84 mg/L, respectively. The temperature-activity coefficient (${\theta}$) of specific nitrification rate, specific denitrification rate and specific phosphorus uptake rate were obtained 1.044, 1.017, 1.028, respectively.

• Korean Journal of Microbiology
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• v.30 no.6
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• pp.483-487
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• 1992

Among a few number of UV-resistant isolated form various environmental sources (10), we made a comparative physio-chemoanalytical study on one of spherical bacteria isolated from air dust, presumably Deinococcus sp. (CM strain 29) with an UV resistant bacterium, Deinococcus radiophilus ATCC 27603 as the reference strain. Our isolate of UV resistant coccus, Deinococcus sp. CM 29 and D. radiophilus ATCC 27603 showed more than 75% matching coefficient in metabolic activity of various substrates. The most predominant cellular fatty acid of both strains was palmitoleic acid (C 16 :1, cis 9), but the detail fatty acid profiles were slightly dissimilar to each other. Cell-bound arange pigment seemed to be an identical chemicals on spectrophotometric analysis. L-ornithine was detected as cell-wall amino acid in both strains. Galactose was detected as cell-wall sugar in D. radiophilus ATCC 27603, whereas glucose in Deinococcus sp. CM 29. G-C molar ratio of both strains was comparable, 63-65%.

• 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 the Korea Fashion and Costume Design Association
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• v.14 no.2
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• pp.49-62
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• 2012

The purpose of this study was to investigate the relationship between well-being lifestyles and herbal cosmetics benefits sought of female consumers. The data were collected from 301 women living in Seoul, Gyeonggi, Gwangju, Busan, and Gyeongnam province in June, 2011. Statistical methods including frequency, F-test, t-test, Duncan test, factor analysis, Cronbach's ${\alpha}$, correlation coefficient, and multiple regression were used for this study. The results of this study were as follows.: The well-being lifestyles were composed of five factors, 'health pursuit activity', 'eco-friendly product interest', 'eco-friendly dietary', 'eco-friendly clothing', and 'eco-friendly housing'. The herbal cosmetics benefits sought were composed of seven factors, 'special function pursuit', 'skin 'fitness pursuit', 'brand pursuit', 'nutritional reinforcement pursuit', 'economy pursuit', 'fragrance pursuit', and 'scarcity pursuit'. The well-being lifestyles and herbal cosmetics benefits sought according to female consumers's demographic characteristics showed a difference. Female consumers's well-being lifestyles showed that correlation with the herbal cosmetics benefits sought. Female consumers's well-being lifestyles had a influence on their herbal cosmetics benefits sought. The study results are highly expected to be used as valuable sources in marketing strategies for herbal cosmetic industries.

• Proceedings of the Korean Environmental Health Society Conference
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• 2002.04a
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• pp.9-12
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• 2002

Diffusive transport of volatile organic compounds(VOCs) and their degradation by bacteria in unsaturated soils are couple by poorly understood mass transfer kinetics at the gas/water interface. Determination of the fate of VOCs in unsaturated soil is necessary to evaluate the feasibility of natural attenuation as a VOC remediation strategy. The objective of this study was to develop a mechanistically based mathematical model that would consider the interdependence of VOC transport, microbial activity, and sorptive interaction in a moist, unsaturated soil. Because the focus of the model was on description of natural attenuation, the advective VOC transport that is induced in engineered remediation processes such as vapor extraction was not considered. The utility of the model was assessed through its ability to describe experimental observations form diffusion experiments using toluene as a representative VOC in well-defined soil columns that contained a toluene degrading bacterium, Pseudomonas Putida, as the sole active microbial species. The coefficient for gas-liquid mass-transfer, K$\sub$LA/, was found to be a key parameter controlling the ability of bacteria to degrade VOCs. This finding indicates that soil size and geometry are likely to be important parameters in assessing the possible success of natural attenuation of VOCs in contaminated unsaturated soils.

• The Journal of Korean Physical Therapy
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• v.20 no.4
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• pp.1-6
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• 2008

Purpose: We studied the correlation between BBS (Berg Balance Scale), Functional Reach Test (FRT), Timed-Up & Go test (TUG), Stability Index (STI), MBI (Modified Barthel Index), and Fall History. Methods: We recruited 20 stroke patients from the Gang Dong Gu Health Care Center in Seoul, Korea. All subjects could walk with or without an assisting device. Subjects first completed a questionnaire pertaining to their fall history and Activity of Daily Living (MBI), and then were evaluated with BBS, TUG, FRT, and STI. We used the Tetrax posturography system that calculates a STI based on fluctuations in vertical ground reaction forces. The data were analyzed using a Pearson Correlation Coefficient. Results: The BBS and FRT (p<0.05) and MBI (p<0.01) showed a significant positive correlation. BBS negatively correlated with STI and TUG (p<0.01). Fall history and BBS, TUG, MBI, FR, STI did not correlate. Conclusion: The BBS helps predict weight shifting, walking, and ADL, but is not good for predicting fall risk. So, we need to study about factors that affect falling.

• Women's Health Nursing
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• v.23 no.3
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• pp.181-190
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• 2017

Purpose: The purpose of the study was to identify factors influencing health promotion behavior of late-middle aged women. Methods: The subjects were 128 women who were attending a cultural center located in B metropolitan city. Data were collected from July 1 to July 31, 2016. Data were analyzed using descriptive statistics, t-test, ANOVA, $Scheff{\acute{e}}$ test, Pearson correlation coefficient, Stepwise multiple regression with SPSS/WIN 23.0 program. Results: Health promotion behavior of later middle-aged women was different by general characteristics such as religion, exercise, economic satisfaction, life satisfaction, and leisure time activities. Health promotion behavior had a positive relationship with health perception and perception of successful aging, and a negative relationship with aging anxiety. Health perception, perception of successful aging, exercise, leisure time activities (exercise and social activity) were verified significant factors influencing health promotion behavior accounted for 38%. Conclusion: The results indicate that health perception and perception of successful aging influence health promotion behavior of late-middle age women. It would provide the basic data for the development of program aimed at improving health promotion behavior of late-middle age women.

• Journal of Integrative Natural Science
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• v.11 no.2
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• pp.93-100
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• 2018

Caspases, a family of cysteinyl aspartate-specific proteases plays a central role in the regulation and the execution of apoptotic cell death. Caspase-3 has been proven to be an effective target for reducing the amount of cellular and tissue damage because the activation of caspases-3 stimulates a signalling pathway that ultimately leads to the death of the cell. In this study, Hologram based Quantitative Structure Activity Relationship (HQSAR) models was generated on a series of Caspase-3 inhibitors named 3, 4-dihydropyrimidoindolones derivatives. The best HQSAR model was obtained using atoms, bonds, and hydrogen atoms (A/B/H) as fragment distinction parameter using hologram length 61 and 3 components with fragment size of minimum 5 and maximum 8. Significant cross-validated correlation coefficient ($q^2=0.684$) and non cross-validated correlation coefficients ($r^2=0.754$) were obtained. The model was then used to evaluate the eight external test compounds and its $r^2_{pred}$ was found to be 0.559. Contribution map show that presence of pyrrolidine sulfonamide ring and its bulkier substituent's makes big contributions for improving the biological activities of the compounds.

• Proceedings of the Korean Nuclear Society Conference
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• 1996.11a
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• pp.97-102
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• 1996

A methodology for estimating the number of failed fuel rods bused on the primary coolant activity in operating PWRs has been developed. This method deals with both the diffusion and the kinetic models. In case of small or medium cladding failures, the diffusion model which can consider different sizes of failure is used, whereas for large cladding failures the kinetic model is used. From the kinetic model, the release-to-birth rate ratio (R/B) is represented as a linear function of the number of failed fuel rods. This has been done by expressing the escape rate coefficient in terms of the slope of log(R/B) versus $log\;{\lambda}$. The present method has been applied to the cases of 26 cycles of several nuclear power plants for which ultrasonic testings were performed. The results show that the present method gives better predictions than the existing computer codes such as IODYNE and CADE.