• Journal of the Korean Dietetic Association
• /
• v.6 no.1
• /
• pp.9-16
• /
• 2000

This study was carried out with 436 college students in Chungnam to investigate the relationship between residences and eating patterns of college students. The subjects were devided into two groups; those who live in self-boarding house(SB) and home with parents(HWP). The results were as follows. An average height, weight and BMI were 173.5cm, 66.0kg and 21.9 in male SB and 161.8cm, 50.2kg and 19.2 in female SB and 172.9cm, 67.6kg and 22.6 in male HWP and 161.2cm, 50.9kg and 19.6 in female HWP, respectively. There were no significant differences in the general characteristics between the SB and the HWP. The proportions of disease possession, vitamin/mineral supplements and physical exercise were not significantly different between two groups by residences. Sleeping time of the SB was longer than that of the HWP. And, frequency of cigarette smoking and alcohol drinking of the SB were higher than those of the HWP. The proportions of skipping meals in the SB were higher than those in the HWP. Approximately 40.42% of the SB tended to skip the breakfast, while 11.26% of the HWP did. It turns out that the most common reason why skipped meals was due to a eating habit(44.21%) in the SB and a lack of time(48.85%) in the HWP, respectively. The survey shows that while a great majority of the SB had lunch at campus(50.00%) and home(30.00%), the HWP ate lunch at campus(33.79%) and restaurant(33.33%). About 48% of the SB ate out more than 2-3 times a week compared to 42% of the HWP. The daily intakes of calcium, iron, vitamin A, vitamin $B_2$, niacin and vitamin C in the SB were significantly higher than those in the HWP. The percent RDAs of calcium and iron intakes were lower in female students than in male students. In conclusions, students of self-boarding had more dietary problems than students of home with parents. These results suggest that college students of self-boarding might have low ability of meal management. Therefore, nutrition education for college students is needed, and menus of campus cafeterias should be developed to meet the various needs of students.

• Molecules and Cells
• /
• v.38 no.11
• /
• pp.950-958
• /
• 2015

BCS1L gene encodes mitochondrial protein and is a member of conserved AAA protein family. This gene is involved in the incorporation of Rieske FeS and Qcr10p into complex III of respiratory chain. In our previous study, AluYRa2-derived alternative transcript in rhesus monkey genome was identified. However, this transcript has not been reported in human genome. In present study, we conducted evolutionary analysis of AluYRa2-exonized transcript with various primate genomic DNAs and cDNAs from humans, rhesus monkeys, and crabeating monkeys. Remarkably, our results show that AluYRa2 element has only been integrated into genomes of Macaca species. This Macaca lineage-specific integration of AluYRa2 element led to exonization event in the first intron region of BCS1L gene by producing a conserved 3' splice site. Intriguingly, in rhesus and crabeating monkeys, more diverse transcript variants by alternative splicing (AS) events, including exon skipping and different 5' splice sites from humans, were identified. Alignment of amino acid sequences revealed that AluYRa2-exonized transcript has short N-terminal peptides. Therefore, AS events play a major role in the generation of various transcripts and proteins during primate evolution. In particular, lineage-specific integration of Alu elements and species-specific Alu-derived exonization events could be important sources of gene diversification in primates.

• Korean Journal of Health Education and Promotion
• /
• v.20 no.2
• /
• pp.63-79
• /
• 2003

This study has examined the degree of depression and anxiety among high school students in an urban area and then explored the factors influencing their depression and/or anxiety status. Self-administered questionnaires were offered to 2,381 students from ten high schools in Daejon Metropolitan City. The items for investigation included such factors as various characteristics of school and family life, daily life style, and the degree of depression and anxiety. Based on the study results, the following conclusions were made； 1. The distribution according to the depression degree has shown that 61.9％ of students were normal, 32.9％ of students had mild depression, 5.0％ moderate depression, and 0.3％ severe depression. As for anxiety, 40.2％ of students were normal, while 19.1％ were classified as having anxiety and 40.7％ borderline anxiety. 2. As regards to the degree of depression and anxiety, it was greater in girls than boys, in 3rd graders than 1st and 2nd graders, and in the groups who have recieved lower grades in studies, who had poor relations with their friends and a low feeling of satisfaction with school life. In particular, concerning various characteristics of family life, the scores of depression and anxiety were higher in the groups whose financial conditions were poor, whose parents' interests were lower, whose degree of satisfaction with their family and school life was lower, than their counterparts. 3. According to their life styles higher scores of depression and anxiety were found in the groups whose sleeping time was inappropriate, whose breakfasts were skipped, who ate daily snacks, who didn't take regular exercises, and who had poor health habits, compared to their counterparts, respectively. 4. As for the correlation between the degree of depression and its associated variables, the higher scores of depression were in positive correlation with the groups who had lower grades in studies, poor relation with their friends, low feeling of satisfaction with school and home life, low parents' interest, poor subjective condition of health, breakfast skipping, lack of regular exercises, and lower indices of health habits. 5. As for anxiety, the higher scores of anxiety were in the positive correlation with the groups with poor relation with their friends, low feeling of satisfaction with school and family life, poor subjective condition of health, lack of regular exercises, and poor health habits. 6. The influential factors on the depression of students were selected such as subjective condition of health, sex, feeling of satisfaction with family and school life, grades in studies, relation with their friends, presence of regular exercises, degree of interest of parents, sleeping time, cigarette smoking and eating breakfast. 7. The influential factors on the anxiety state of students were selected such as subjective condition of health, feeling of satisfaction with family and school life, sex, sleeping time, regular exercises, cigarette smoking, snacking and relations with their friends. The present study results suggest that girls rather than boys, higher graders than lower ones are more vulnerable to anxiety and depression state, and besides, various characteristics of school and family life, and daily life style can be influential on students' emotional states. Therefore, better management of psychological status of students is thought to require a wide variety of measures to modify the influencing factors and to encourage social support.

• Korean Journal of Community Nutrition
• /
• v.8 no.6
• /
• pp.951-963
• /
• 2003

The purpose of this study was to investigate the eating behaviors, the self-perception of body images, the hematological indices and the nutrient intake of adolescent female athletes in Incheon. The subjects were 112 female athletes(track and fleld: n=32, target shooting: n=27, fencing n=29, swimming: n=14, badminton: n=10) from middle and high schools in Incheon. This cross-sectional study was conducted by means of a sol(-administered questionnaire. Fasting blood samples were obtained and analyzed for hemoglobin (Hb), hematocrit (Hct), ferritin, serum iron, mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration(MCHC), unsaturated iron binding capacity (UIBC), total iron binding capacity (TIBC) and transferrin saturation (TS). Nutrient intakes obtained by means of the 3 day-recall method were analyzed using the Computer Aided Nutritional Analysis Program. Statistical analysis was conducted using the SPSS 10.0 program. Most of the female athletes had dietary problems such as eating unbalanced meals, skipping meals, and preferences for processed foods. More than 60% of the female athletes skipped breakfast. As for perception of their body images, track and field athletes in particular, controlled their weights significantly better than the other athletes (p<0.05). With regard to their physical exertion during exercise, 56.3% of the swimmers and 31.3% of the track and field athletes answered “very hard”, which was a significant difference (p< 0.001). More than 80% of the female athletes experienced vertigo during exercise (p< 0.01). Also more than 50% of the female athletes, with the exception of the badminton players, had experienced irregular menstruation (p<0.05). The average serum iron levels (p<0.05), the serum ferritin levels (p<0.05) and TS (p<0.05) of the track and field athletes was significantly lower as compared to that of the other athletes. The nutrient intakes of the female athletes, with the exception of Vitamin B$_{6}$, niacin and phosphorus were lower than the Korean Recommended Daily Allowances (RDA). In particular, the calcium and iron intakes of the female athletes were under 50% of the Korean RDA. Therefore, proper nutritional education and supplementation are required for female athletes to encourage desirable eating habits, as well as to improve their nutritional status and exercise performances.s.

• Korean Journal of Community Nutrition
• /
• v.11 no.5
• /
• pp.608-617
• /
• 2006

This study compared the food habits and attitudes towards dietary life culture in types of feeding management, gender and grade. The subjects were 352 elementary school students who lived in Seocheon, Chungnam. The independently managed school students were better than jointly managed school students in food habits (p<0.05). In skipping school meals, upper grade students were skipped more than lower grade students (p<0.05). In rate of eating school meals, boys were faster than girls (p<0.001). The independently managed school students and the jointly managed school students were different on distasteful food. Boys disliked vegetables and girls disliked cereals and beans (p<0.05). Upper grade students ate more well-balanced meals than lower grade students (p<0.05). As for the question 'what you will do if the distasteful foods are provided through school meals', they responded. the highest percent of students, 'I will try once or twice'. And the response 'I have them for health' was higher independently in managed school students than the jointly managed school students (p<0.05), girls than boy (p<0.05), and the lower grades than the upper grades (p<0.05). As for the question 'what you will do if the distasteful foods are provided, after the guide for school meals was performed', the response, 'I will make an effort to have it' accounted for the highest percents, and there were differences in lower grade students who were high percents than upper grade students (p<0.01). As for the recognition for unbalanced diets, most of the students recognized that it is a 'bad habit'; the girl students accounted for more percentage than boys (p<0.05). The criterion of food choice were different in gender and grade (p<0.01). As for the factor of influences for the food habits formation, lower grade students were 'school education' and upper grade students were 'parents' (p<0.05). Thus, the systematic guide for proper intakes of nutrition should be performed. Also, the time when students can be educated by an expert of nutritional education, which is connected with school meals and students can grow healthily.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.23 no.8
• /
• pp.2010-2024
• /
• 1998

In video coding, it is important to improve the average picture quality as well as to maintain cosistent picture quality between consecutive pictures. In this paper, we propose a distortion-rate estimation method for MPEG-2 video and a forward rate control method, using the proposed estimation result, to be able to obtain the improved and consistent picture quality of CBR (Constant Bit Rate) encoded MPEG-2 video. The proposed distortion-rate estimation enable us to predict the distortion and the bits generated from an encoded picture at a given quantization step size and vice versa. The most attactive features of proposed distortion-rate estimation are its accuracy and low computational complexity enough to be applied to the practical video coding. In addition, the proposed rate control first determined a quantization parameter per frame by following procedure: distortion-rate estimation, target bit allocation, distortion constraint and VBV(Video Buffer Verification) constraint. And then this quantization parameter is applied to the encoding so that improved and consisten picture quality can be obtained. Furthermore the proposed rate control method can solve the error propagation problem caused by scene change or anchor picture degradation by using the B-picture skipping and the guarantee of the minimum bit allocation for the anchor picture. Experimental results, comparing the proposed forward rate control method with TM5 method, show that the proposed method makes more improed and consistent picture quality than TM5.

• The Korean Journal of Community Living Science
• /
• v.12 no.1
• /
• pp.1-13
• /
• 2001

The purpose of this study was to investigate of gender difference on dietary behavior and food preferences of elementary school children. This survey was carried out through questionnaire method for 274 male and 257 female of the 6th grade elementary school children in Anyang city. By calculating WLI(weight-length index), 26.9% of students were overweight, and 26.2% were under-weight. Average height of male was 147.9cm and that of female was 148.9cm, and their weight was 40.9 kg and 39.2kg respectively. The average BMI(body mass index) was 18.1 kg/㎡. The self-recognition of health status was different according to gender, male recognized better health status than female. There was no significant difference of parents´ education level and the occupation depending on gender. The 56.7% of students had regularly for breakfast, and 60% for lunch and 42.9% for dinner. The female students had irregular meal time more frequently than male did for dinner(p<0.01). They skipped more breakfast(7.0%) than other meals. Reasons of skipping meal were lack of time to eat(50%), boring side-dishes(17.0%) etc. For snacks, choice depends on taste (55.4%), and they bought at the shop nearby (36.5%) and convenience shop(29.9%). They had a meal outside once a month(42.9%), and selected Korean traditional food(52.5%). For almost all of foods male students´ preference showed higher than female except cucumber. Low score of preference was obtained in such as salted vegetables, soy pastes, and fish(shellfish) groups raw or fermented. The preference level was a little higher in such as vegetables & kimchi group and pot stews. The results assert the importance of nutrition education for the students in puberty. It is necessary breakfast should be taken regularly, and therefore we should carry out the education of importance of nutrition and health for children considering the dietary behavior and food preference for balanced diet.

• Journal of the East Asian Society of Dietary Life
• /
• v.17 no.3
• /
• pp.338-350
• /
• 2007

The objectives of this study were to analyze nutrition-related problems and to develop the nutrition education programs for high school students A survey was conducted with 500 students in the second grade level at high schools in Daegu who differed in socio-economic characteristics. In addition, body composition analysis was accomplished by the Inbody 3.0. The developed questionnaires were distributed and 481 questionnaires were collected with a 96.2% of response rate. Statistical data analysis was completed using SPSS WIN(ver.12.0) for descriptive analysis, reliability analysis, factor analysis, t-tests and $X^2$-tests. We first analyzed students' problems related to nutrition and environmental factors. In a question addressing skipping breakfast, only 11.5% answered they "do not eat" breakfast. In regards to BMI, the male students' degree of obesity was higher. Second, we analyzed living environments, which greatly influence dietary behavior. For the snacks-related categories, most of the students liked bread, cake and other snacks. When they chose the snacks, they mainly considered taste. There were significant difference among the males and females(p<.01) in terms of snacks intake habits, where 43.1 % of the males answered they snack "occasionally" and 43.4% of the females answered they snack "according to how they feel". In the case of beverages, the males consumed significantly more(p<.001). Based on their regional groups, the area A group preferred milk and milk products, and the area B group preferred soft drinks. As for the time of beverage intake, 77.6% of the females answered "with snacks", which was significantly higher than 61.4% of the males(p<.001), 12.2% of the males drank beverages after exercise. For late snacking, 68.0% of the male students and 71.1 % of the female students consumed late snacks. Most of them preferred bread, cake and other snacks. The reasons for taking a late snack were "when I feel hungry" by 61.8% of the males which was higher than the females(p<.001), 23.6% of the females consumed late snacks "impulsively". Ideally, in order to improve the food habits of high school students effective and practical nutrition education programs that consider gender and regional school group, should be carried out.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2011.10a
• /
• pp.431-435
• /
• 2011

This paper presents optimized searching technique to improve the performance of H.264/AVC. The proposed CAVLC encoder uses forward and backward searching algorithm to compute the parameters. By zero-block skipping technique and pipelined scheduling, the proposed CAVLC encoder can obtain better performance. The experimental result shows that the proposed architecture needs only 66.6 cycles on average for each $16{\times}16$ macroblock encoding. The proposed architecture improves the performance by 13.8% than that of previous designs. The proposed CAVLC encoder was implemented using VerilogHDL and synthesized with Megnachip $0.18{\mu}m$ standard cell library. The synthesis result shows that the gate count is about 15.6K with 125Mhz clock frequency.

• Korean Journal of Community Nutrition
• /
• v.13 no.3
• /
• pp.374-385
• /
• 2008

A study has been performed to provide the basic information about the current dietary habits, health related behaviors, and body indices and to bring forward the importance of this information to the people's attention based upon the relation between employee's life patterns and health conditions in their daily lives. Three hundred and five department store workers were examined from August 2006 to September 2006. With the average BMI values $23.9{\pm}2.2$ for males and $20.0{\pm}1.9$ for females, both gender groups were in normal, but 62.2% of the males were overweight and 15.4% of the females were under-weight. Regarding dietary and health related factors on how they perceive themselves, as normal were 204 (66.9%) the most and bad and very bad were respectively 43 (14.1%) and 5 (1.6%). Half of the subjects (43.2%) perceived sleeping hours to be insufficient, and 64.4% of them need to exercise regularly. As problems related to eating habits, they reported irregular meal times, overeating, preference of hot and spicy food, skipping meal, unbalanced meals. Regarding weight control they have attempted were the most (73.0%), after weight reduction, 51.2% of the subjects had side effects, such as gastrointestinal troubles, anemia, dizziness, sense of fatigue, constipation, physiological disorder, and diarrhea, etc. In the food habit score, it was shown that overall average score of the subjects was $62.63{\pm}9.86$ which is lower than other studies. Female ($62.76{\pm}10.15$) had better score than male ($61.67{\pm}8.06$). While the item with the highest point was eat all three meals of the day, that was the lowest point, exercise every day. The food habit score of the younger group had lower than older group, and also they preferred sweet foods to other group. The results suggest that nutrition education for workers at specific working fields needs to be more focused on the improvement of dietary habits and health status of workers.