• Korean Journal of Childcare and Education
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• v.8 no.5
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• pp.179-202
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• 2012

This study examined the relationship among children's theory of mind, social skills, and emotional intelligence. A total of 76 five-year old children in the Seoul area participated in this study. Children were tested on three different type of theory of mind tasks and teachers rated their children's emotional intelligence and social competency. SPSS 18, t-test, correlation analysis, and step-wise of multilateral regression were performed for data collection. The results were as follows: First, 40.8% of participants passed the task of theory of mind. There were significant differences in total score of theory of mind, social competence skills, and emotional intelligence between successors and failures. Second, by gender, there were significant differences in total score of theory of mind, social competence skills, and emotional intelligence. Third, there was a relationship between theory of mind and social competence skills, social competence skills and emotional intelligence, and theory of mind and emotional intelligence.

• Korean Journal of Food Science and Technology
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• v.34 no.1
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• pp.123-127
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• 2002

Echinacea is a North American native medicinal herb used traditionally for wounds, burns, snake or insect bites, colds, infections, and inflammation by indigenous Americans. We investigated the effects of the root and stem of fresh Korean-grown Echinacea angustifolia methanol extracts and fractionation extracts on the cytotoxicity against cancer cells (HL60, 3LL). The extracts were prepared by step-wise fractionation of methanol extracts of Echinacea angustifolia using hexane, chloroform, ethyl acetate, buthanol, and water. From the tests, root and stem parts of Echinacea showed the cytotoxic effect on cancer cells. The cytotoxie rate of the ethyl acetate fraction of the root parts showed 79% against HL60 cells at low concentration (0.125 mg/mL), and hexane fraction of the root and stem parts gradually increased as the concentration of samples increased, and the root parts showed 82% at 1.0 mg/mL concentration against HL60 cells, chloroform fraction of the root part showed 78.4% against HL60 cells and 68.4% on 3LL cells at 1.0 mg/mL concentration, water and butanol fraction of these results, it is considered that ethyl acetate fraction of the root and stem parts showed 60.1% to 77.1% against HL60 cells, after testing by MTT assay system. From these results, it is considered that ethyl acetate fraction of the Echinacea angustifolia root parts has stronger anticancer effects than any other fractions in vitro.

• Asian-Australasian Journal of Animal Sciences
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• v.15 no.10
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• pp.1507-1516
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• 2002

Meat and bone meal is a valuable protein and mineral source in diets of production animals and contributes to the protein, energy and mineral component of diets. The aim of the present study was to more accurately characterise the apparent ileal amino acid digestibility of meat and bone meals produced in New Zealand and evaluate routine in vitro assays used in practise to measure meat and bone meal quality. A total of 94 commercial meat and bone meals from 25 New Zealand rendering plants over a two and a half year period were analysed for proximates, gross energy, gross amino acid content (incl. hydroxyproline, hydroxylysine and lanthionine), apparent ileal amino acid digestibility, pepsin nitrogen digestibility, protein solubility and bone content. The mean crude protein content of the 94 meat and bone meal samples was 56.8% with a range of >35% units and a coefficient of variation of 9.8%. The mean crude fat and ash content were 10.0 and 28.4% respectively. These latter components showed a large range (16 and 43%, respectively) with coefficients of variation above 22%. Amino acid digestibility between samples was highly variable with lysine and sulphur amino acids digestibility ranging between 45.8-89.0 and 38.2-85.5%, respectively. Pearson correlation coefficients are presented between crude protein content and individual gross amino acids, crude protein content and individual digestible amino acid content, and pepsin N digestibility and individual digestible amino acid content. There was a significant relationship between the digestible amino acid nitrogen content and the crude protein content while pepsin nitrogen digestibility was not correlated to ileal amino acid nitrogen digestibility (r=-0.06). Meat meals with a high protein content had relatively low hydroxyproline and hydroxylysine levels something that was attributed to the levels of collagen from bone. The data indicated that lanthionine (formed upon heat treatment of cysteine with a hydroprotein) is not a good indicator of the heat treatment employed to meat and bone meals. Step-wise multiple regression equations to predict the apparent digestible content of amino acids from rapid in vitro assays are presented. The most selected variables included ash and crude fat content. In general the equations derived for the essential amino acids had a higher degrees of fit (R2) compared to the non-essential amino acids. The R2 for the essential amino acids ranged from 0.43 for histidine and 0.68 for leucine. These equations provide a means of more rapidly estimating the apparent ileal digestible amino acid content (protein quality) of meat and bone meal using standard analyses.

• Journal of Digital Convergence
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• v.15 no.8
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• pp.235-245
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• 2017

This study aimed to identify the convergence relationships among nutrition knowledge, health beliefs, diet self-efficacy, and diet management behaviors among Sri Lankans with hypertension (HTN). 91 adults diagnosed with HTN for more than one year participated in this study. A set of interviewer-administered questionnaire was used to assess general characteristics, nutrition knowledge, health beliefs, diet self-efficacy, and diet management behaviors. A stepwise multiple regression analysis was conducted to identify the factors that might influence diet management behaviors. There were statistically significant positive correlations between nutrition knowledge (r=0.26, p=.013), health beliefs (r=0.35, p=.001), diet self-efficacy (r=0.34, p=.001) and HTN diet management behaviors. Three variables, nutrition knowledge, health beliefs, and diet self-efficacy, explained 19.9% of the variance in HTN diet management behaviors (F=8.36, p=.001). Diet self-efficacy was the most significant influencing factor (${\beta}=.29$, t=2.75, p=.007), followed by nutrition knowledge (${\beta}=.25$, t=2.50, p=.014). The findings of this study can be used as valuable data for developing effective interventions to improve diet management behaviors of persons with HTN.

• Journal of Hospice and Palliative Care
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• v.19 no.3
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• pp.233-239
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• 2016

Purpose: Little is known regarding the factors associated with the willingness of family caregivers of terminal cancer patients to participate in a bereaved survey. This study aimed to ascertain the pre-loss factors that predict actual participation in a bereaved survey. Methods: We conducted a prospective observational study using data from two multi-center surveys at the end-of-life and after loss. In order to identify the pre-loss factors associated with participating in the bereaved survey, we used a step-wise multivariate logistic regression analysis. Results: Among 185 bereaved individuals, 30 responded to the survey (response rate: 16.2%). There were differences between the participation group and the non-participation group regarding religion, economic status, and perceived quality of care as assessed by the Quality Care Questionnaire-End of Life. A final multivariate model revealed that bereaved individuals who professed a religion (adjusted odds ratio [aOR]=5.01; P=0.008), had a high income (aOR=4.86, P=0.003), and satisfied with the care for familial relationship (aOR=4.49, P=0.003) were more likely to engage in the bereaved survey. Conclusion: Our finding suggests that improving the quality of end-of-life care may promote actual participation in a bereaved survey through easing post-loss distress. More attention should also be paid to those bereaved individuals who are hesitant to participate in a bereaved survey.

• Korean Journal of Social Welfare
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• v.37
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• pp.217-239
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• 1999

The main premise of this study is that a successful treatment and rehabilitation of the mentally ill depends on an active. coping of their family members, who are the primary care-takers of the patients, even if families are confronting many difficulties because of caring their patients. Accordingly, this study aims to find out which factors are related to families active coping with the mentally ill. This study is conducted the survey with 191 family members of the mentally ills in order to discover: 1) what kinds of relations do exist between sociodemographic factors of the respondents, care-burden toward the mentally ill, and social supports, and the active coping, and 2) in what extent do these related factors affect on the active coping. The major findings of the study are: 1) gender and educational background of the respondents are positively related to the active coping; 2) regarding care-burden felt by the respondents, there is statistically significant positive relationship between - the respondents' burden due to a lack of social and institutional support and their active coping; 3) considering the relationship with social support, there is highly positive relationship between decision. emotional. material supports and the active coping; 4) using a multiple regression, respondents' sociodemographic background, care-burden, social support affect significantly on the active coping by 26.2% of explanatory power; and 5) using a step-wise multiple regression, the most powerful influenced factors on active coping are emotional support, burden due to a lack of social and institutional support, and educational background of the respondents. In conclusion, this study recommends clinicians to use an educational and support model for the families. All these efforts will contribute to enhance active coping of the families with the mentally ill.

• Korean Journal of Childcare and Education
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• v.10 no.1
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• pp.43-58
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• 2014

The purpose of this study was to investigate the effect on child care teachers' self-efficacy in teaching science. Subjects were 297 childhood teachers who were working at a day care center. The data were collected by using three questionnaires(Science Teaching Efficacy Belief Instruments, Inventory of Science Attitude, and Attitude Test for Child Care Teachers). The data were analyzed by Pearson's correlation and step-wise Regression. The results of this study are as follows; First, there were positive correlations between aptitude for child care teacher and self-efficacy in teaching science. Second, there were positive correlations between science attitude and self-efficacy in teaching science of child care teachers. Third, the significant predictors of self-efficacy in teaching science were interest in science, social value of science, interpersonal relationship management abilities, and positive emotions. The results of this study can be used to develop effective teacher training programs for early childhood science education.

• Journal of Korean Society of Forest Science
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• v.87 no.2
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• pp.260-269
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• 1998

This study was conducted to screen the biological activity of urushiol in the sap of lac tree(Rhus verniciflua STOKES) which has been used in traditional folk remedies. Cytotoxic activity of urushiol was screened with L1210(mouse luekemia cell), PC-9(human lung adenocarcinoma cell), A427(human lung adenocarcinoma cell) and KATO III (human stomach adenocarcinoma cell) The stepwise hexane : acetone eluent fractions of the urushiol were obtained by the silica gel adsorption column chromatography and added to the culture media containing L1210, PC-9. A427, and KATO III, respectively. A hexane : acetone(90 : 10, v/v) eluent fraction of them showed the lowest 50% inhibition concentration($IC_{50}$) of $0.018{\mu}g/m{\ell}$ for the cell line of A427. Much lower level of $IC_{50}$ of the hexane : acetone(90 : 10, v/v) eluent fraction of the urushiol showed the equal inhibition effect with tetraplatin(i.e., anti-cancer drug of platinum complexes) on the cancer cell lines as follows ; 3.4 times lower for L1210, 3.9 times lower for PC-9, and 105.5 times lower for A427. However, $IC_{50}$ of the hexane : acetone(90 : 10 v/v) eluent fraction for KATO III was exceptionally 3.9 times higher than that of tetraplatin.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.9
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• pp.316-325
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• 2018

In this paper, to integrate distributed IT resources and manage human resource efficiently as purpose of cost reduction, infrastructure of wind turbine monitoring system have been designed and developed on the basis of SaaS cloud. This infrastructure hierarchize data according to related task and services. Softwares to monitor conditions via the infrastructure are also developed. Softwares are made up of DB design, field measurement, data transmission and monitoring programs. The infrastructure is able to monitor conditions from SCADA data and additional sensors. Total time delay from field measurement to monitoring is defined by modeling of step-wise time delay in condition monitoring algorithms. Since vibration data are acquired by measurements of high resolution, the delay is unavoidable and it is essential information for application of O&M program. Monitoring target is gearbox in wind turbine of MW-class and it is operating for 10 years, which means that accurate monitoring is essential for its efficient O&M in the future. The infrastructure is in operation to deal with the gearbox conditions with high resolution of 50 TB data capacity, annually.

• Environmental and Resource Economics Review
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• v.21 no.1
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• pp.93-127
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• 2012

We estimate how much KEPCO can save their loss and how much social welfare can be increased by applying the real-time pricing instead of current regulated retail price in the electricity market in order to analyze the problem of the regulated retail price which is fixed below the marginal cost. We estimate the demand functions of peak time and off-peak time in summer (June to August) and winter (December to February). We construct the supply function based on hourly step-wise linear marginal cost functions, too. We find that the increase of social welfare will be 67 billion won in summer if the fixed retail price is changed into the real-time pricing scheme. The total 705 billion won will be transferred from consumer surplus to producer surplus and the rest (67 billion won) will be saved from the reduction of deadweight loss among KEPCO's loss. In winter, the increase of social surplus will be 225 billion won and 1,174 billion won of KEPCO's loss will be transferred from consumer surplus. As a result, we conclude that the regulation of the retail price in the electricity market induces the social welfare loss and KEPCO suffers a huge loss.