• Journal of Broadcast Engineering
• /
• v.18 no.4
• /
• pp.619-630
• /
• 2013

In this paper, we propose an edge directed color demosaicing algorithm considering color channel correlation. The proposed method consists of local region classification step and edge directional interpolation step. In the first step, each region of a given Bayer image is classified as normal edge, pattern edge, and flat regions by using intra channel and inter channel gradients. Especially, two criteria and verification process for the normal edge and pattern edge classification are used to reduce edge direction estimation error, respectively. In the second step, edge directional interpolation process is performed according to characteristics of the classified regions. For horizontal and vertical directional interpolations, missing color components are obtained from interpolation equations based on intra channel and inter channel correlations in order to improve the performance of the directional interpolations. The simulation results show that the proposed algorithm outperforms conventional approaches in both objective and subjective terms.

• Journal of Nutrition and Health
• /
• v.26 no.7
• /
• pp.899-906
• /
• 1993

Human blood selenicum(Se) level depends on the Se content and bioavailablilty of foods. In countries where the soil has low Se content, the differences of Se intake and blood Se concentration are shown according to the type of diet. In this study, Se status of women eating an average German diet(175 German healthy women) and wholesome nutrition group(243 women) were studied. There were significant differences in wholeblood and plasma Se levels between the two groups. In average German diet group, mean wholeblood Se concentration was 84.97ug/l and plasma Se concentration was 75.02ug/l. In wholesome nutrition group mean wholeblood Se concentration and plasma Se concentration with Se levels, correlation analysis was conducted between Se concentration and BMI, age and daily food intake. BMI and age did not correlate significantly with wholeblood and plasma Se levels. In wholesome nutrition group, serum and wholeblood Se levels had significant correlation with fish intake.

• Journal of Korea Water Resources Association
• /
• v.33 no.5
• /
• pp.527-536
• /
• 2000

This study estimates the pollution load in a basin by regional groups analyzing the relationship between the discharge and pollution load. The study area is placed in the Miho stream basin known as the main tributary of the Kum river. Four major Telemetary streamflow stations are chosen. In this research, discharge and water quality in a dry season and a flood season from the observed discharge in the stream are analyzed. The Rating-Curve and the Pollutograph are drawn analyzing discharge and water quality at the major stations. The characteristics of runoff for each stream are analyzed and the change of water quality are analyzed for rainfall period. The relationship between discharge and water quality has been investigated. The relationship between the discharge and pollution load is analyzed and a representative equation is derived. These relationships permit an estimates of the pollution load at the Miho stream basin. basin.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.36 no.7
• /
• pp.840-848
• /
• 2007

This study was performed in order to investigate the stress levels, sleep, anthropometric measurement and nutrient intakes their correlations of college students. General characteristics, stress scores using a stress test, sleep scores using a sleep test, anthropometric measurement, body composition using Inbody 3.0 and nutrient intakes using 3-day recalls were measured in 353 subjects (183 males and 170 females). Mean total stress score of the male students was 68.2${\pm}$45.0 and that of the female students was 86.5${\pm}$48.7. Stress for study, future, economic and value-related factors were higher than other factors in both male and female students. Female students were more stressed than male in friend, family, study, future and value-related factors. Mean sleeping time and sleep scores of the male students were 7.0 hrs and 40.6${\pm}$5.7, respectively and that of the female students were 7.1 hrs and 41.5${\pm}$5.3, respectively. Mean height, weight, percent body fat (PBF) and waist-hip ratio (WHR) of the male students were 174.8 cm, 73.3 kg, 19.0% and 0.84, respectively. Mean height, weight, PBF, and WHR of the female students were 161.7 cm, 55.3 kg, 28.7% and 0.81, respectively. Mean energy and protein intakes of the male students were 2026.3 kcal (77.9% EER) and 83.0 g (150.9% RI) and those of the female students were 1538.2 kcal (73.2% EER) and 60.7 g (134.9% RI), respectively. In male students, sleep duration, professor and future problem showed significantly negative correlation (p<0.05). For both male and female students, in correlations between sleep scores, life stress experience frequency and importance, the total scores showed significantly negative correlation (p<0.01). Sleep scores (sleep quality) have more significant correlation than sleep duration in life stress. In male students, correlations between economic problem and weight, waist circumference and hip circumference showed significantly negative correlation. In female students, correlations between different gender problem and body mass index (p<0.05), PBF (p<0.01), WHR (p<0.01) and obesity degree (p<0.05) showed significantly negative correlation while correlation between study problem and PBF (p<0.05), WHR (p<0.05) showed significantly positive correlation. In male students, there were significantly positive correlations between life stress experience frequency and carbohydrate calcium, iron, vitamin A; correlation between importance and calcium, iron as well as correlation between total life stress scores and iron (p<0.05). In female students, correlation between life stress experience frequency and thiamin along with correlation between importance and thiamin showed significant negative correlation (p<0.05). College students need to practice good life habits for the purpose of correctly managing life stress.

• Journal of Nutrition and Health
• /
• v.42 no.8
• /
• pp.682-690
• /
• 2009

The purpose of this study is to analyse the relation between dietary habit and nutrition knowledge, and ADHD (Attention Deficit Hyperactivity Disorder) in the middle school students in Seoul, Korea. Total study subjects were 631 students, 51.8% was male and 48.2% was female. In the assessment of predisposition of ADHD, 93% was normal group and 7% was ADHD group. As for the gender in ADHD group, 56.8% was male and 43.2% was female. Normal group showed the higher breakfast consumption rate than ADHD group (p < 0.05). Dietary habits were better in normal group than ADHD group. Nutrition knowledge scores of normal group was 7.38 out of 15 and scores of ADHD group was 5.77 out of 15 (p < 0.01). The nutrition knowledge score and the dietary habits score showed a positive correlation (p < 0.01). The nutrition knowledge score and snack meal purchasing frequency showed a negative correlation (p < 0.05). There are significant negative correlation between attention deficit hyperactivity score and nutrition knowledge score (p < 0.01). In conclusion, ADHD group showed lower level of nutrition knowledge and worse dietary habits than the normal group.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2022.07a
• /
• pp.667-670
• /
• 2022

본 연구는 간호대학생의 성지식, 성태도, 생식건강증진행위를 확인하고 이들의 상관관계 확인을 위한 서술적 조사연구이다. 간호대학생 300명을 대상으로 설문하고 229부로 분석하였다. 연구도구는 Jeon(2004)의 성지식, Ho(2009)의 성태도, Jo(2014)의 생식건강증진행위 측정도구를 사용하였다. 자료분석은 일반적 특성은 실수와 백분율, 평균과 표준편차, 성지식, 성태도, 생식건강증진행위는 평균과 표준편차를 이용하였다. 일반적 특성에 따른 성지식, 성태도, 건강증진행위 차이는 independent t-test, one-way ANOVA, 사후검정으로 Scheffe's test를 이용하였다. 상관관계는 Pearson's correlation coefficients로 분석하였다. 여학생의 성지식이 높았으며, 생식건강증진행위 교육은 저학년이 적절한 시기임을 알 수 있다. 또한, 성지식이 높을수록 생식건강증진행위가 높아 생식건강증진행위 향상을 위한 성교육의 필요성이 여전히 요구됨을 시사한다. 이에, 본 연구는 간호대학생의 생식건강을 위한 상담과 교육에 활용할 생식건강증진행위의 교육자료 개발에 기초자료로 활용될 수 있을 것이다.

• Journal of Nutrition and Health
• /
• v.49 no.2
• /
• pp.88-98
• /
• 2016

Purpose: We recruited 118 women in their early 20's to examine the relationship between sodium intake and salty taste thresholds and preference. We also examined the association of salty taste preference with sodium-related dietary behaviors and major dishes contributing to sodium intake. Methods: Daily sodium intake was estimated using a 127-item dish-frequency questionnaire. Salty taste thresholds and preference were measured using rating scales using water solution of NaCl and a self-administered questionnaire based on a Likert scale, respectively. Results: Salty taste preference showed positive correlation with daily sodium intake and sodium intake-increasing behaviors, and inverse association with sodium intake-decreasing behaviors, including salt and soy sauce use at the table, the frequency of eating out and home delivery of foods, broth consumption of soup, stew or noodle soup, the use of ready-to-serve or processed foods, fresh vegetable intake, and the accommodating attitude toward bland food. Intake of sodium-contributing dishes, including ramen, spicy soft-tofu stew, radish kimchi, and dishes containing kimchi, also showed positive association with salty taste preference. Unexpectedly, detection and recognition thresholds of salty taste showed no association with salty taste preference, sodium intake, and sodium-related dietary behaviors. Conclusion: These findings suggest that salty taste preference could reflect sodium intake of individuals rather than thresholds of saltiness, and may be used as a simple and effective proxy for usual sodium intake.

• Geotechnical Engineering
• /
• v.7 no.4
• /
• pp.25-34
• /
• 1991

In this study, relationships between CBR values tested by Korean Standards (KS CBR) and the elastic moduli from CU compression tests are developed for the subgrade soils. Triaxial compression and KS CBR tests are carried out on five types of samples from 15 points in Korean ezpressways. Triaxial compression tests are performed under 3 types of coifining pressures to generalize the CBR -elastic modulus relationship as functions of confining pressured and mean principal stresses. From the regression analyses of experimental results, equations for relationships between the KS CBR and elastic moduli of roadbed Boils are proposed. An equation for the relation- ship between the KS CBR and the maximum dry density of roadbed soil is also proposed.

• Journal of Digital Convergence
• /
• v.19 no.8
• /
• pp.275-283
• /
• 2021

This study was intended to help improve assessment in college EFL classes by examining the relationship between formative assessment (FA) and summative assessment (SA). Participants for the study were 75 undergraduates, taking an eight-week optional college English course at a four-year college in China. FA data were collected in the final course of the course by a self-reporting survey using the online training platform Mosoteach. To achieve the finding, the relationship between FA scores and SA scores (final exam and performance scores) was analyzed in SPSS by means of Pearson correlation analyses. Significant positive correlations were found between FA and SA scores overall. In addition, students' performance on chapter tests, online discussions, brainstorming, quick-responses, assignments and the number of thumbs-up clicks by teachers were significantly correlated with SA scores. The results suggested that FA administered through the Mosoteach app could improve students' academic performance, thus providing an empirical basis for improving educational assessment. Based on these findings, implications for assessment in EFL classes were described.

• The Journal of Engineering Geology
• /
• v.14 no.4 s.41
• /
• pp.371-379
• /
• 2004

Soil investigation data at 7 different locations around Honam costal region were analyzed and experimental correlations between soil properties and parameters of soft clay were presented. Most soils were classified as CL and CH by the Unified Soil Classification System and were unstable structurally because the water contents were generally greater than the liquid limits. The compression index has good correlations with water content, liquid limit and initial void ratio. The trend of these correlations were similar to the Skempton equation Cc = 0.009(LL -10) and other studies for Korean soft clays but the constants were small different. The slope of these correlations for Honam costal region were slightly greater than those for Kyunggi costal region and Kyungnam costal region. The correlation coefficient (R) between the liquid limit and the plastic index is 0.93. It is seen that not only the water content and the liquid limit but also the water content and the initial void ratio are correlate, therefore the experimental equations were presented for the practical purpose.