• Journal of the Korean Dietetic Association
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• v.2 no.1
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• pp.29-37
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• 1996

This study was undertaken to evaluate the relation between obesity and dietary life of children aged 4-7 divided into two groups based on height for age, weight for age and weight for height. Controls were selected based on sex and age similar with those of cases. Cases and controls were selected using the combination of weight for height, weight for age and height for age by the World Health Organization standard. Cases were 23 children judged as obese. Controls were 37 judged as normal. Whether their mother had a job or not, showed relative risk 1.35(95% C1 0.32-5.64). In obese group, employmental statue of mother was 17.4% compared with 13.5% in control group. In mother's concern for cooking pattern, the relative risk was 5.64 and 95% CI was 1.70-18.66 in the item of "We consider the color arrangement when we serve foods" which was the highest rate. The item having the lowest relative risk was "We cook the meal by ourselves with spending time" which of the relative risk was 0.52 and 95% CI was 0.16-1.65. The item having a great significance in the dietary habit of subjects were "They beat the tablewear with the chopstick"(RR:1.64, 95% CI:0.22-12.73) and "I talk with food in my mouth"(RR :1.11, 95% CI:0.39-3.15), and the other items didn't show significancy. Number of food eating per day for male was 30.0$\pm$10.93 in obese group where as 23.2$\pm$9.80 in control group. 22.3$\pm$4.56, 21.8$\pm$10.91 were taken obese group and control group respectively in female. In the survey for general habit in life, the item of "We has a time for conversation with our family regularly" was high correlation to obesity and item of "We made our children change clothes and go to toilet themselvesj has slight relation to obesity. From above, we observed normal and obese children had different factors such as mother's attitude for preparing meals, table manners and habit of living. So we should take a continuous interest in children's dietary life in order to correct the wrong dietary habit and to protect from future problems.

• Korean Journal of Social Welfare
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• v.61 no.1
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• pp.163-194
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• 2009

The purposes of the presented study were to investigate the characteristics related to the acculturation strategies and to investigate characteristics which discriminated the acculturation strategies among immigrated women in Korea based on the multidimensional perspective on acculturation. The study was designed as a social survey study. Data from 346 immigrated women were analyzed. Findings indicated that 37% of the respondents were marginalization, 30% were integration, 18% were segregation, and 15% were assimilation. Integration was associated with Vietnam nationality, younger age, lower level of education. Assimilation was related to longer period of residence, higher number of children, lower level of resilience. Marginalization was associated with North Korea, Japan, China nationality, older age, higher level of education. Segregation was related to older age, higher level of education, lower number of children. Also, Southeast nationality, age, level of education, spouse, and number of children significantly discriminated the acculturation strategies. Especially, the rate of correct discrimination was 80% only for integration. Practical implications from this study were discussed.

• Korean Journal of Microbiology
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• v.26 no.4
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• pp.283-290
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• 1988

A spontaneous revertant of mutation rbsB103 that is ribose taxis-positive was characterized. This revertant was found to be export-competent in the export of ribose-binding protein shown by the disappearance of accumulated mutant precursor protein and the export of mature ribose-binding protein to the periplasm. The reversional change was shown to be in the region of risB gene that codes for the amino terminal portion of ribose-binding protein. Analysis by high-performance liquid chromatography of peptide patterns of ribose-binding proteins confirmed the relationship between the wild-type and the revertant proteins as shown for the mutant previously (Iida et al., 1985). When the processing rate of presursor proteins from the wild type and the revertant strain in vivo was compared by pulse-chase experiment, it was found that processing is less efficient than normal in the revertant. Purified mature proteins from both wild-type and revertant were subjected to amino acid sequencing. The results confirmed the amino acid changes deduced from the DNA sequencing and showed that processing of the revertant precursor occured in the correct position even though there are two different amino acids present in the signal sequence.

• Journal of Korean Home Economics Education Association
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• v.20 no.4
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• pp.91-105
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• 2008

The purpose of this study was to conduct a questionnaire survey for total 503 high school female students in Wonju area, Kangwon province, and thereby determine any potential effectiveness of their trials to reduce weight in their satisfaction with their own figure, daily living practices related to weight control, nutrition knowledge and dietary behaviors. Out of all respondents, it was found that 284 girl students(58.4%) ever tried to reduce weight, and both trial group(trying to reduce weight) and no-trial group were much interested in weight control(94.7% vs. 60.7%). But 85.2% of trial group and 50.3% of no-trial group were dissatisfied at their figure. It was found that the percentage of trial group practicing regular exercise was higher than that of no-trial group doing so(21.8% vs. 5.5%). Subjects scored 14.3 out of 20 on a nutrition knowledge scale, but trial group scored significantly higher points(14.5) than no-trial group(13.9)(p<0.01). In particular, it was notable that trial group showed higher rate of correct answer in certain items such as balanced diet and knowledge about weight control. It was found that our all respondents showed moderate dietary behaviors, which is demonstrated by their mean score of 31.3 in dietary behaviors(possible score: $15{\sim}45$). Notably, it was found that there were problems exposed in their dietary velocity, intake of various diets and intake frequency for each food group(dairy products, marine plants and vegetative oil and fat). And it was found that the percentage of trial group taking diet with vegetative oil was higher than that of no-trial group.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.22 no.3
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• pp.282-291
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• 2011

Adaptive modulation(AM) is an important technique to increase the system efficiency, in which transmitter selects the most suitable modulation mode adaptively according to channel state in the temporary and spatially varying communication environment. Fixed modulation on channels with varying signal-to-noise ratio(SNR) is that the bit-errorrate(BER) probability performance is changing with the channel quality. An adaptive modulation scheme can be designed to have a BER which is constant for all channel SNRs. The correct as well as fast and simple SNR estimation is required essentially for this adaptive modulation. In order to operate adaptive modulation system effectively, in this paper, we analyze the effect of SNR estimation performance to it through the average BER and data throughput. Applying SNR estimation based on auto-correlation of decision feedback signal and others to adaptive modulation system, we also confirm performance degradation or improvement of its which is decided by SNR estimation error at each transition point of modulation level. Since SNR estimation based on auto-correlation of decision feedback signal shows stable estimation performance for various quadrature amplitude modulation(QAM) comparatively, this can be reduced degradation than others at each transition point of modulation level.

• Journal of Korean society of Dental Hygiene
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• v.6 no.4
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• pp.469-479
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• 2006

The purpose of this study is to prevent the oral disease and to improve the oral sanitation by investigating the behavior on the awareness of oral health aimed at the residents who lives in the Yeongdong-gun, Choongbuk, Korea. This study was carried out from September 26th to September 27th of 2006 and surveyed aim at 176 persons of residents of Yeongdong-gun. The results of this study can be utilized as a base data of program development on the oral health education of sectional residents and can be reached at the following conclusions. 1. The number of residents who have not experienced oral health education takes possession of 67.5% for men and 48.4% for women, the path how to learn of oral health education holds 67.7% for men and 51.6% for women(p<0.001). In case of the content of oral health education, prothodontics treatment is predominantly showed up as 60.2% for men and 44.2% for women(p<0.01). 2. The number of residents who has visited the dental clinics within 6 months holds 52.4% for men and 27.3% for women(p<0.01). With regard to the number of residents who has visited the dental clinics on the purpose of prevention(examination) of oral disease within 1 year, 'not experienced' showed up no differences as 52.4% for men and 57.6% for women. In case of the number of residents who has experienced prothodontic and conservative treatment, scaling is extremely much as 37.6% for men and 52.6% for women(p<0.05). 3. In case of brushing teeth, 2 times a day is the first rank of 52.3% on the frequency of toothbrushing and the time when brush your teeth after breakfast, lunch and dinner is 22.2%, 16.5% and 20.3% respectively. Below 2 minutes is 64.7% and over 3 minutes is 10.3% on how long do you brush your teeth. With regard to the method on how to brush teeth, `up, down & across' is the first rank of 35.2%. In case of utilization of oral hygiene utensils, the number of resident who is `not used' occupies 62.5%. 4. In the knowledge of oral health, 60.7% of residents replied that the cause of dental carious is the infection by the bacteria. The relationship between the smoking and oral health, 50.5% of them replied `Not relevant' and 33.6% of them replied `Relevant'. The average point of the correct response rate of 9 items related with the knowledge of oral health is merely showed up as 3.39 point. Therefore, it shows up that the knowledge and education related with the prevention of oral disease is much deficient.

• Journal of Nutrition and Health
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• v.50 no.5
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• pp.472-482
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• 2017

Purpose: This study examined the dietary behavior and the effects of nutrition education according to the stages of behavioral changes in sodium reduction of healthy male adults (20~69 years) in Gwangju Chonnam Regions. Methods: The research subjects were 200 male adults. Results: A significantly higher mean age was observed in the stage of Action Maintenance (A M) than in the stage of Precontemplation (PC) and stage of Contemplation Preparation (C P). Significant differences in the frequency of exercise, eating out, and preference for salty food, intake frequency of Udon, Ramen and Sundae according to the stages of behavior change in sodium reduction were observed. The dietary behavior scores and intake frequency-related dietary behavior scores of A M were significantly higher than PC and C P. Nutrition education for sodium reduction improved the dietary behavior score significantly in PC and C P, as well as the rate of correct answers of sodium-related nutrition knowledge in all stages. After the nutrition education, PC decreased greatly, and A M increased. Conclusion: Subjects in PC and C P had an undesirable propensity in dietary behavior, and nutrition knowledge compared to A M, but the nutrition education for sodium reduction greatly improved their dietary behavior and nutrition knowledge.

• The Journal of Korean Society for School & Community Health Education
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• v.15 no.1
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• pp.121-140
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• 2014

Objectives: Recently, the rate of death by chronic disease, is increasing steadily. To prevent this, the public health center will have taken a leading role in the local community medical business through an establish to the national health promotion act and an amendment to the law of public health center in Korea. Results: Accordingly this research, using the Pender's health promotion model which is related with subject health behavior who government employees serve at the public health center have taken important position in the local community health promotion, have comprehended the actual condition of health behavior. For increasing the health behavior practice of subject to comprehend the factor which have effect on health behavior practice, which can be a correct role model in the local community health promotion. A survey was performed on 406 government employees who serve at five public health centers in Seoul. The period of survey was from 25th October, 2010 to 15th November, 2010. The results of this study were summarized as below. 1. Work-related stress, perceptible beneficial obstacle, and self-efficacy were composed by 5 points measure. The results show those work-related stress were $3.06{\pm}0.469$, 74perceptible beneficial obstacle were $3.74{\pm}0.471$, and self-efficacy were $3.49{\pm}0.469$. 2. As for the health behavior by general characteristic, the results have specific differences on age, education level, state of marriage, rank of the position, field of the occupation and employment forms in statics analysis. 3. As for the past health behavior by health behavior characteristic, work-related stress have specific differences on the past frequency of drinking (p<.05) in statics analysis, perceptible beneficial obstacle have specific differences on the past frequency of having breakfast(p<.05), having snacks(p<.05) and doing exercise(p<.05) in statics analysis. Self-efficacy have specific difference on the past frequency drinking(p<.01) in statics analysis. 4. According to the correlation between the factors related with health behavior and health behavior, the health behavior have specific differences on perceptible health condition(p<.01), the past health behavior and perceptible beneficial obstacle(p<.05). Work-related stress and self-efficacy don't have specific relation in health behavior practice. 5. The factors, which effect on health behavior practice have specific differences on the past health behavior, employment forms and field of the occupations. The ability of explanation occupied 54.8% what explained of the health behavior practice by general characteristic, perceptible health condition, employment forms and perceptible beneficial obstacle. Conclusions: According to the correlation between the factors related with health behavior, the health behavior have specific differences on perceptible health condition(p<.01), the past health behavior and perceptible beneficial obstacle(p<.05). The factors, which effect on health behavior practice have specific differences on the past health behavior, employment forms and field of the occupations.

• Journal of Korean Society on Water Environment
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• v.23 no.4
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• pp.518-526
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• 2007

There have been serious soil erosion and water pollution problems caused by highland agriculture practices at Doam-dam watershed. Especially agricultural activities, chemical and organic fertilizer and pesticide applications, soil reconditioning to maintain soil fertility are known as primary causes of soil erosion and water qaulity degradation in the receiving water bodies. Among these, soil reconditioning can accelerate soil erosion rates. To develop soil erosion prevention practices, it is necessary to estimate the soil erosion from the watershed. Thus, the Universal Soil Loss Equation (USLE) model has been developed and utilized to assess soil erosion. However, the USLE model cannot be used at watershed scale because it does not consider sediment delivery ratio (SDR) for watershed application. For this reason, the Sediment Assessment Tool for Effective Erosion Control (SA TEEC) was developed to assess the sediment yield at any point in the watershed. The USLE-based SA TEEC system can estimate the SDR using area-based SDR and slope-based SDR module. In this study, the SATEEC system was used to estimate soil erosion and sediment yield at the Doam-dam watershed using the soil properties from reconditioned agricultural fields. Based on the soil sampling and analysis, the US LE K factor was calculated and used in the SA TEEC system to analyze the possible errors of previous USLE application studies using soil properties from the digital soil map, and compared with that using soil properties obtained in this study. The estimated soil erosion at the Doam-dam watershed without using soil properties obtained in the soil sampling and analysis is 1,791,400 ton/year (123 ton/ha/year), while the soil erosion amount is 2,429,900 ton/year (166.8 ton/ha/year) with the use of soil properties from the soil sampling and analysis. There is 35 % increase in estimated soil erosion and sediment yield with the use of soil properties from soil reconditioned agricultural fields. Since significant amount of soil erosion are known to be occurring from the agricultural fields, the soil erosion and sediment yield from only agricultural fields was assessed. The soil erosion rate is 45.9 ton/ha/year without considering soil properties from soil reconditioned agricultural fields, while 105.3 ton/ha/year after considering soil properties obtained in this study, increased in 129%. This study shows that it is very important to use correct soil properties to assess soil erosion and sediment yield simulation. It is recommended that further studies are needed to develop environment friendly soil reconditioning method should be developed and implemented to decrease the speed of soil erosion rates and water quality degradation.

• Journal of KIISE:Information Networking
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• v.36 no.5
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• pp.413-424
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• 2009

Wireless sensor network is based on an event driven system. Sensor nodes collect the events in surrounding environment and the sensing data are relayed into a sink node. In particular, when events are detected, the data sensing periods are likely to be shorter to get the more correct information. However, this operation causes the traffic congestion on the sensor nodes located in a routing path. Since the traffic congestion generates the data queue overflows in sensor nodes, the important information about events could be missed. In addition, since the battery energy of sensor nodes exhausts quickly for treating the traffic congestion, the entire lifetime of wireless sensor networks would be abbreviated. In this paper, a new congestion control method is proposed on the basis of genetic algorithm. To apply genetic algorithm, the data traffic rate of each sensor node is utilized as a chromosome structure. The fitness function of genetic algorithm is designed from both the average and the standard deviation of the traffic rates of sensor nodes. Based on dominant gene sets, the proposed method selects the optimal data forwarding sensor nodes for relieving the traffic congestion. In experiments, when compared with other methods to handle the traffic congestion, the proposed method shows the efficient data transmissions due to much less queue overflows and supports the fair data transmission between all sensor nodes as possible. This result not only enhances the reliability of data transmission but also distributes the energy consumptions across the network. It contributes directly to the extension of total lifetime of wireless sensor networks.