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Seongnam, South Korea

Kim H.-S.,Shingu College | Jeong J.-H.,Kyung Hee Medical Center | Jeong J.-H.,Kwangwoon University | Lee J.-W.,Kyung Hee University | And 5 more authors.
Journal of the Korean Physical Society | Year: 2011

We have attempted to understand the characteristics of images through the dependence of distortion and noise production on the compression and to quantitatively estimate of picture quality according to the type of detector used to obtain digital mammography images. We determined the differences in the original images with Signal to Noise Ratio, Peak Signal to Noise Ratio, Root Mean Square Error, and Mean Absolute Error by applying the compression rates of JPEG2000 and JPEG and selecting eight sample images after we checked the Module Transfer Function with the edge method based on IEC 62220-1-2 from the direct Hologic detector and the indirect GE detector. The picture quality of the direct detector was superior to that of the indirect detector with MTF. However, the distortion of the direct detector was more severe than that of the indirect detector in image compression. Source


Shin B.-M.,Gangneung - Wonju National University | Ryu J.-I.,Shingu College | Sheiham A.,University College London | Do L.G.,University of Adelaide | Jung S.-H.,Gangneung - Wonju National University
Journal of Clinical Periodontology | Year: 2015

Aim To assess whether the relationship between socioeconomic position (SEP) and periodontal health fitted the Critical Period or the Social Mobility life course models. Methods A nationally representative sample of 5570 Korean adults from KNHANES IV study. Log-binomial regression models adjusting for adulthood or childhood socioeconomic (SES) variables was used to assess independent effects of socioeconomic differences for childhood, adulthood and period of transition from child to adult in periodontal health. Results In the Critical Period model, poorer periodontal status was associated with SES disadvantage in adulthood and not predicted by SES disadvantage in childhood. For the intergenerational Social Mobility model, prevalence of current periodontal disease was only different for females aged 30-39 and 40-49 years, after adjustment. Prevalence of periodontal disease in females was highest in the downwardly mobile group. Conclusions The Critical Period model was better at explaining association between socioeconomic position and periodontal health, such as the adulthood socioeconomic variables (SEP), had a stronger effect than childhood factors on periodontal disease. The Social Mobility model explained more of the variation in the association between SEP and periodontal health among women than among men. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. Source


Shim J.E.,Daejeon University | Kim J.,East Carolina University | Kim J.,University of Illinois at Urbana - Champaign | Lee Y.,Shingu College | And 9 more authors.
Journal of Nutrition Education and Behavior | Year: 2016

Objective: To examine the association between feeding practices and both fruit and vegetable intakes of preschoolers. Design: Cross-sectional; data collected from 2009 to 2010. Setting: Child care centers enrolled in the cohort of the Synergistic Theory and Research on Obesity and Nutrition Group Kids program. Participants: Three hundred and sixteen mother-child dyads were recruited in the baseline survey as primary caregivers of children aged 2-5 years. Main Outcome Measures: Ten aspects of maternal feeding practices were measured using a Comprehensive Feeding Practices Questionnaire. The frequency of children's fruit and vegetable consumption was estimated by mothers. Analysis: Spearman's rank order correlation and linear regression analysis between parental feeding practices and both fruit and vegetable consumption were adjusted for potential confounders. Pearson's correlation coefficients among 10 parental feeding practices were calculated. Results: Children in the study consumed fruit 1.7 ± 0.9 times per day and vegetables 1.4 ± 0.8 times per day. Feeding practices of building a healthy home food environment and involvement were positively related and those of restriction for health were negatively related to children's vegetable consumption (P < .001); moreover, encouraging balance and variety and monitoring were positively related to children's fruit consumption (P < .001). Conclusions and Implications: The results of this study suggest that both fruit and vegetable intakes of preschool children are more likely to increase if parents employ feeding practices that encourage child autonomy, competence, and relatedness. © 2016 Society for Nutrition Education and Behavior. Source


Lee Y.,Shingu College | Kim C.-I.,Korea Health Industry Development Institute
Journal of Nutrition and Health | Year: 2013

The purpose of this study was to examine the characteristics of the dietary intake of Korean elderly according to chewing ability using data from the Korea National Health and Nutrition Examination Survey (KNHANES) conducted during 2007-2010. Among subjects aged 65 years and over, more than half, 54.3% of elderly people, were classified as the difficulty in chewing group (DC). The DC group had lower nutrients and food intakes than those of in the no difficulty in chewing group (NDC). Findings showed that subjects in the DC group consumed fewer foods, especially fruits and vegetables. In addition, the DC group had significantly lower intakes of pan-fried food, stir-fried food, braised food, and seasoned-cooked vegetables, which could not be easily cooked or chewed. On the other hand, the number of soups and stews included in the top 30 largely consumed dishes were higher in the DC group than in the NDC group. No difference in numbers of daily meal/snack intake was observed between the two groups, however, the DC group had lower numbers of side-dishes compared to the NDC group. Fewer side-dishes per meal could be related to lower intakes of nutrients in dietary quality. Findings of this study demonstrated that dietary intake was influenced by chewing ability of elderly Korean people. Therefore, study of factors affecting dietary intake such as convenient cooking methods to decrease cooking time and skills to extend preservation and storage time of foods will necessary. In addition, development of food products and new techniques of cooking considering health status, chewing, and swallowing ability is required for the elderly, followed by establishment of standards for senior-friendly food products. © 2013 The Korean Nutrition Society. Source


Bae S.-J.,Yeungnam University | Mohanta T.K.,Yeungnam University | Chung J.Y.,Ajou University | Ryu M.,Yeungnam University | And 8 more authors.
Biological Control | Year: 2016

Trichoderma species are well-known biological control agents. In this study, metabolites from 128 Trichoderma isolates were extracted from liquid cultures using ethyl acetate and tested for their activities against seven Phytophthora isolates. Following preliminary analysis, eight Trichoderma isolates were selected for further tests. Among them, the metabolites from Trichoderma atroviride/. petersenii (KACC, Korea Agricultural Culture Collection, 40557) and Trichoderma virens (KACC 40929) showed the strongest inhibitory activities against Phytophthora isolates. Treatment with KACC 40557 extract inhibited Phytophthora growth, induced defense-related genes, and caused plant hormonal changes during Phytophthora infection in the detached leaves of pepper and tomato plants. Our results showed the potential for use of Trichoderma metabolites as biological control agents against Phytophthora pathogens. © 2015 Elsevier Inc. Source

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