• Korean Journal of Child Studies
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• v.27 no.6
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• pp.1-11
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• 2006

Analysis of the data concerning 525 middle and high school students showed that positive affect correlated positively with cognitive reappraisal strategy and with self-control but correlated negatively with expressive suppression strategy. Negative affect correlated positively with expressive suppression strategy and negatively with self-control. The group of higher positive and higher negative affect was higher than the group of lower positive and lower negative affect in cognitive reappraisal strategy. The group of higher positive and higher negative affect was higher than the group of higher positive and lower negative affect in expressive suppression strategy. The group of higher positive and lower negative affect was higher than the group of higher positive and higher negative affect in self-control.

• Korean Journal of Child Studies
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• v.29 no.2
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• pp.139-153
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• 2008

The purpose of this study was to examine the relationship between the teachers' belief of efficacy and their personality dispositions (reflective thinking, emotional adaptability, and motivation orientation). A survey was conducted of 282 kindergarten teachers working in the area of Seoul and Gyeonggi-Do. Data were processed and analyzed by statistical methods of descriptive statistics, Pearson correlations, and hierarchical multiple regressions. Results showed that teachers' belief of efficacy was positively correlated with their personality dispositions of reflective thinking, emotional adaptability, and motivation orientation-approach. They were negatively correlated with motivational orientation-avoidance. Teachers' belief of efficacy was highly correlated with emotional adaptability in all variables, followed by reflective thinking and motivation orientations-avoidance.

• Food Science and Preservation
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• v.31 no.3
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• pp.374-384
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• 2024

Soybean paste is a staple food used to make doenjang (DE), cheonggukjang (CGJ), and miso (MI). In this study, solid-phase microextraction followed by gas chromatography-mass spectrometry was used to identify volatile components in DE, CGJ, and MI, and principal component analysis (PCA) was performed to determine their correlation between soybean pastes. Esters and hydrocarbons accounted for more than 55% of the total volatile components. PCA showed that esters were highly correlated with DE; pyrazines were correlated with CGJ; and alcohols were highly correlated with MI. Because DE, CGJ, and MI are made of the same material, their overall volatile content tended to be similar. However, the main volatile components and fragrances were different. These findings will be used as basic research data to promote quality improvement of soybean-based fermented foods in Korea and Japan.

• Korean Journal of Community Nutrition
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• v.6 no.2
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• pp.162-171
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• 2001

This study was performed to investigate the relationship between obesity, health-related lifestyle, and dietary intake and serum lipid level in 96 male university students. Health-related lifestyle factors were obtained from questionnaires. Dietary intakes were evaluated with one-day 24-hr recall and two-day dietary record. Anthoropometric data were recorded and serum cholesterol and triacylglycerol concentrations were measured. 21.9%, 36.5%, 36.5%, and 6.2% of the subjects had levels beyond the normal range in serum total cholesterol(TC), HDL-cholesterol(HDL-C), LDL-cholesterol(LDL-C), and triacyglycerol respectively, and 57.3% of the subjects had more than one hyperlipidemic factor. TC was correlated positively with BMI(p〈0.01), waist length(p〈0.05), hip length(p〈0.05), and the amount of smoking(p〈0.05). HDL-C was correlated negatively with BMI(p〈0.05) and hip lenghth(p〈0.05). LTD-C was correlated positively with BMI(p〈0.01), water length(p〈0.05), hip length(p〈0.01), and coffee consumption(p〈0.05). TG was correlated positively with waist length(p〈0.01), waist-to-hip ratio(p〈0.05), and amount of smoking(p〈0.01) and negatively correlated with frequence of exercise(p〈0.05). Among nutrient intakes, only the ratio of protein to energy was correlated negatively with TC(p〈0.05). Logistic regression analysis revealed that BMI, waist length, hip length, waist-to-hip ratio, and amount of cigarette smoking were associated with an increased risk of hyper-TC. BMI, waist length, and hip length were associated with an increased risk of hypo-HDL-C. BMI and coffee consumption were associated with an increased risk of hyper-LDL-C. Amount of cigarette smoking was associated with an increased risk of hyper-TG. In conclusion, a high prevalence of hyperlipidemia in subjects was observed. Also obesity, smoking, and coffee consumption were observed to be highly with the risk of hyperlipidemia in subjects. These findings imply that these factors should be primarily considered in planing the nutrition education program for the prevention of cardiovascular disease in male university students.

• Communications for Statistical Applications and Methods
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• v.15 no.6
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• pp.969-976
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• 2008

Mixed linear models have been widely used in various correlated data including multivariate survival data. In this paper we extend hierarchical-likelihood(h-likelihood) approach for mixed linear models with right censored data to that for left censored data. We also allow a general random-effect structure and propose the estimation procedure. The proposed method is illustrated using a numerical data set and is also compared with marginal likelihood method.

• KIEAE Journal
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• v.8 no.6
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• pp.21-26
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• 2008

According to the tendency of energy efficiency and environment-friendly chracteristics, demend of High-efficiency lighting using LED(Light Emitting Diode)are being increased actively and applied in various fields. However, In order to adequate application of LED light sources, it is necessary to lighting environment and luminous characteristics of LED light sources. This Study aims to characterize the work-plane lighting environment by LED light sources comparing with fluorescent light sources which are widely used. For the sake of this study, a fluorescent light source and 5 LED light sources were introduced and luminance and correlated color temperature were measured to evaluate luminance contrast. The experimental model is Mock-up which is $4.9m{\times}7.2m$ with a height of 2.9m. The test room was set up partition and desks. Luminance and correlated color temperature were measured work-plane on the desk which was set up local lighting by the Radiant Imaging ProMetric 1400. The optical characteristics data of LED can give a lot of advantages to design LED lighting appliances. Hereafter, the object of research will be conducted to evaluate effects of LED light sources on working performance, survey of visual performance, preference and physiology of subjects.

• Korean Journal of Occupational Health Nursing
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• v.22 no.3
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• pp.198-207
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• 2013

Purpose: The purpose of this study was to describe hospital nurses' knowledge and beliefs about hand hygiene and to identify the relationships between knowledge and beliefs. Methods: Data were collected from 232 nurses working in four university hospitals and were analyzed using SPSS/WIN 20.0 program. Results: The mean score of knowledge of hand hygiene was 8.1. The mean scores of behavioral, normative, and control belief about hand hygiene were 2.3, 2.5, and -0.7, respectively. Knowledge was correlated with educational level (p=.013) and experience of hand hygiene campaign (p=.018). The behavioral belief was correlated with age (p<.001) and career (p=.002). The normative belief was correlated with work department (p=.007). The control belief was correlated with educational level (p=.043) and experience of being monitored on hand hygiene (p=.010). The subjects who believed that head nurses, charge nurses, and colleagues practiced better hand hygiene had higher behavioral and normative belief scores than those who did not. There were no significant relationships between knowledge and beliefs. Conclusion: There is a need to improve knowledge of hand hygiene in hospital nurses. This study provides information for developing strategies to strengthen beliefs about hand hygiene.

• Journal of the Korean Operations Research and Management Science Society
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• v.36 no.1
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• pp.13-26
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• 2011

In order to explain the U-shaped pattern of autocorrelations of stock returns i.e., autocorrelations starting around 0 for short-term horizons and becoming negative and then moving toward 0 for long-term horizons, researchers suggested the use of a state-space model consisting of an I(1) permanent component and an AR(1) stationary component, where the two components are assumed to be independent. They concluded that auto-regression coefficients derived from the state-space model follow a U-shape pattern and thus there is mean-reversion in stock prices. In this paper, we show that only negative autocorrelations are feasible under the assumption that the permanent component and the stationary component are independent in the state-space model. When the two components are allowed to be correlated in the state-space model, we show that the sign of the auto-regression coefficients is not restricted as negative. Monthly return data for all NYSE stocks for the period from 1926 to 2007 support the state-space model with correlated noise processes. However, the auto-regression coefficients of the ARIMA process, equivalent to the state-space model with correlated noise processes, do not follow a U-shaped pattern, but are always positive.

• Asian Pacific Journal of Cancer Prevention
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• v.14 no.3
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• pp.1995-1998
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• 2013

Objective: To study the expression of the mismatch repair proteins hMSH2 and nm23 in sporadic colorectal cancer, determine any inter-relationship, and further investigate any clinical significance. Methods: Expression of hMSH2 and nm23 proteins was assessed in 87 colorectal cancer tissues by SP immunohistochemistry, with analysis of survival using follow-up data. Results: In the sporadic colorectal cancer tissues, nm23 protein expression appeared independent of the histological type (P>0.05), but correlated with the invasion depth and lymphatic metastasis (P<0.05). In contrast, hMSH2 protein expression was not significantly correlated with these clinicopathologic features (P>0.05), although it positively correlated with that of nm23 protein in the sporadic colorectal cancers (rs=0.635, P<0.05). Combined expression of the two was found to be related with invasion depth, lymphatic metastasis and prognosis of sporadic colorectal cancer (P<0.05). Conclusion: nm23 protein level was related with the degree of malignancy, and could be used as an index to predict the invasion and metastasis potential. The expression of hMSH2 protein is positively correlated that of nm23 protein, and the combined expression of the two has certain guiding significance for the prognosis of sporadic colorectal cancer.

• Korean Journal of Adult Nursing
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• v.18 no.5
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• pp.699-708
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• 2006

Purpose: This correlational study was undertaken to examine the relationship among daily life stress, self-efficacy, hardiness, and health behavior of university students. Methods: Two hundred sixty five university students were gathered from the undergraduate classes. Data were collected through self-reported question- naires which included daily life stress scale, self-efficacy scales, hardiness scales, and health behavior scales. Results: The daily life stress level had a maximum score of 4 with a mean score of 2.09 and the mean score of health behavior was 2.56. A negative correlation exists among daily life stress, self-efficacy, and health behavior. The self-efficacy is positively correlated with the health behavior. According to the hardiness factor, health behavior is positively correlated with hardiness. In the subareas, health behavior is positively correlated with control, commitment, and challenge. The self- efficacy factor was positively correlated with challenge. Conclusions: In conclusion, based onthe results of this study, both self-efficacy and hardiness are useful concepts in reducing the stress level and in increasing the health promoting behavior. Therefore, it is necessary to develop a program based on both self-efficacy and hardiness.