Park, Choi-Kyu;Song, Jae-Young;Wee, Sung-Hwan;Lee, Eune-Sub;Yoon, Hachung;Moon, Oun-Kyeong;Choi, Eun-Jin;Nam, Hyang-Mi
Korean Journal of Veterinary Research
/
v.46
no.2
/
pp.107-117
/
2006
This paper described the epidemiological characteristics of 2002 outbreak of classical swine fever (CSF) in Korea. A total of thirteen CSF-infected farms could be classified into two clusters according to the location and time of outbreak. Two farms located in the same county of Gangwon province and 11 farms located in several different districts of Incheon metropolitan/Gyeonggi province were identified as CSF-infected from April 16 to 30 and from October 7 to December 21 in 2002, respectively. As the result of epidemiological analysis, the two clusters of outbreaks were turned out to be independent epidemics which had different sources of virus introduction. Three farms were found to have been infected primarily; one located in Cheolwon county of Gangwon province and two located in Kangwha county of Incheon metropolitan area. The most likely factors of virus introduction into these primary infected farms were considered to be direct or indirect contact by foreign workers and/or owners of the infected farms who had come back from traveling in China before outbreaks. This was supported by the genetic typing of CSF viruses isolated from the pigs of infected farms. All the virus isolates of 2002 outbreak were found to be genetic type 2, whereas the viruses isolated before 2000 were type 3 and the reference strains, such as attenuated live vaccine virus (LOM strain) and high virulent challenge virus (ALD strain), were type 1. Accordingly, we concluded that the 2002 CSF outbreak must have been caused by a newly introduced virus from overseas and the type 3 virus must have been eradicated after the last outbreak of 1999 by the national CSF eradication campaign which were implemented since 1996. Based on the combined analysis of epidemiological data and genetic typing, the transmission routes of classical swine fever virus were found to be the movement of vehicles (60%) and persons (10%), neighbourhood spread (20%) and unknown (10%). It is expected that the analyzed data and findings of classical swine fever outbreak epidemic could be very useful to establish the disease control and eradication program for the country in the future.
This study approaches the effects of Balance Training on excercise performance and the prevention from the injuries caused by excercise. The subjects of the Balance Training program are female exercise beginners and the research period covers 8 weeks from January 10 to March 7, 2003. The research objects are 19 female golf beginners in 30s to 40s, who live in Seoul or Seongnam in Gyeonggi province and have played golf less than 6 months. The programs of the Balance Training and exercise performance were conducted to an 11 experimental group among the 19 research objects at the same time, and only the exercise performance program was applied to an 8 control group for 8 weeks. Before and after 8 weeks' application of the research programs to each group, the research subjects were examined, especially the components of their bodies, the balance and the performance capability were measured both before and after the test. The frequency of injuries by exercise was measured after the test, and the difference of the frequency was compared with the frequency before exercise. First, the experimental group, in a measurement of balance, showed that SN, MB, SAr and SAg of static balance decreased in a situation of MEO, MEC, GEO, GEC, TBEO, TBO, FHEO, FEO(p <0.05), but the control group increased. Second, the analysis on the change of exercise performance indicated better improvement in distance, ball speed, and accuracy of the experimental group than the control group(p<0.05). Third, the experience of injuries showed that there were 2 injuries in the experimental group and 11 injuries in the control group. The injured parts were 2 cases in the hands and fingers of the experimental group, and 1 case in the shoulder, 4 in the elbows, 4 in the hands and fingers and 2 in the lumber of the control group. From the above-mentioned results, it is recognized that the Balance Training program improved the exercise performance of female golf beginners and had good effects on the prevention from injuries. Accordingly, if this program is applied to sports-beginners, it will contribute to the improvement of the public health.
Purpose - For small and medium sized firms, CEO characteristics are main factor influencing firms' prosperity as well as performance. So it is quite natural that many people are interested in factors of CEO that matters. In this research, CEO characteristics in terms of capabilities and skill or special knowledge necessary to run the business are invested for manufacturing firms. Precedent studies reveal that CEO characteristics such as psychological factors including desire to succeed, tendency to take risks, personal factors including age, year of running business, and task related factors including managing capability, communication skills, network influence firm performance for manufacturing firms. However, these studies simply verify whether or not those factors affect firm's managing performance. This study, however, goes further to investigate how is the affecting process from CEO's capabilities and organization characteristics to firm's core competence, and from core competence to advantages, and from advantages to managing performance. Research design, data, and methodology - We make a questionnaire and surveyed manufacturing firm CEO's in Gyeonggi-do area. General characteristics analysis, factor analysis, regression analysis, and control effect analysis was conducted. SPSS 2.0 Win, version was used. Results - The CEO characteristics including basic capability, task capability, leadership, and organization characteristics affect core competence at the statistically significant level. And, core competence affect both price advantage and differentiation advantage at the significant level. Some unique finding is that while differentiation advantage affects both financial achievement and non-financial achievement, price advantage does not affect both financial and non-financial achievement. And firm characteristics mainly measured by CEO characteristics of skills has control effects on the trace from core competence to price advantage. Conclusions - For small and medium sized firms CEO characteristics is the most important factor influencing firm's prosperity. For manufacturing firms, whether CEO has the skill or special knowledge to run the firm is critical factor. The study results show that CEO's for manufacturing firms put importance on price and price advantage which seems to be familiar to them. However, the price advantage does not influential to financial and non-financial achievement. This result suggests that small and medium sized manufacturing firms' CEO's should make effort to improve other aspects of advantages to be more competitive.
Job satisfaction is an important part of social workers who strive to improve the quality of life and independence of their clients. The goal of this study was to reveal the correlation between social workers' self-efficacy, job satisfaction, and supervision to determine whether supervision regulated the effect of social worker's self-efficacy on job satisfaction. In addition, the effect of social worker's self-efficacy on job satisfaction was grasped, and the control effect of supervision regarding the process of social worker's self-efficacy on job satisfaction was identified. For the study, 150 social workers at 10 community welfare centers in Gyeonggi-do and North Seoul area were surveyed, and the statistical program PASW (SPSS) 25.0 was used for data analysis. As a result of the study, it was confirmed that the social worker's self-efficacy had a significant effect on job satisfaction, and that the social worker's self-efficacy had a significant static effect on job satisfaction. In addition, in the process of social worker's self-efficacy affecting job satisfaction, the mediating effect of the supervision function (administrative, educational, and supportive) was found to be significant, so it turned out that the supervision function for social workers was crucial to enhance self-efficacy.
The objective of this study was to examine the effect of storytelling-used drawing activities on young children's creativity and linguistic expressiveness, thus working out basic data to help young children's development of creativity and linguistic expressiveness. Study subjects were 20 4-year old children at D Child-care Center in Anyang City, Gyeonggi-do. The experiment group conducted storytelling-used drawing activities, whereas the control group carried out drawing activities after viewing famous paintings and hearing fairy tales. Study findings are as follows: First, young children in the experiment group who carried out storytelling-used drawing activities presented significantly higher improvement in creativity than children in the control group did. Regarding the sub-variables of creativity, the score of the experiment group was higher in sensitivity, originality and flexibility than that of the control group, and the difference was statistically significant. Second, young children in the experiment group who carried out storytelling-used drawing activities presented significantly higher improvement in linguistic expressiveness than children in the control group did. Regarding the sub-variables of linguistic expressiveness, the score of the experiment group was higher in the area of 'story development after seeing paintings' and 'connected story development after seeing paintings' than that of the control group, and the difference was statistically significant. In conclusion, the significance of this study seems to be in that it verified storytelling-used drawing activities have positive effects on young children's improvement of creativity and linguistic expressiveness, and confirmed storytelling-used drawing activities are an effective technique to improve young children's creativity and linguistic expressiveness.
The study uses a regional climate model to check future changes in extreme climate, to calculate extreme indexes presented by STARDEX, and to analyze the trends to predict the continuity and changes in the spatial distribution of extreme climate in the future. An analysis of extreme climate indices showed that they are likely to increase in the Seoul metropolitan area, in Gyeonggi-do, in Yongdong in Gangwon-do, and in the southern shore region of Korea. It is, however, forecasted to diminish in the central inland region. The analysis also showed that the average temperature in Korea will increase because of climate change. On the other hand, an analysis of extreme rainfall indexes showed that the trend of heavy rainfall threshold is 0.229 in Seogwipo, the greatest five-day rainfall is 5.692 in Seogwipo, and the longest dry period is 0.099 in Sokcho. Of extreme temperature indexes, the trend of Hotdays threshold is 0.777 in Incheon and the longest heat wave is 0.162 in Uljin. The Coldnight threshold is 0.075 in Inje and -0.193 in Tongyeong, according to the analysis.
Changes of the characteristics in summer rainfall in the Republic of Korea by the regime shift and their causes were examined by analyzing long-term observational data. There has been an abrupt increase in rainfall variability since 1998, which was mainly due to the enhanced rainfall during August~September, although the gradual increase was also detected in June~July. In June~July, the enhanced rainfall developed as a band type covering the whole East Asia while in August~September, it is only found over the Republic of Korea with the greatest increase of 130 mm over Seoul and Gyeonggi area. The two intensified anticyclonic anomalies over the north-northwest/east of the Republic of Korea resulted in producing northerlies/southeasterlies, transporting cold/warm-wet air flows, respectively. The center of the convergence zone from the two separate systems located in the Republic of Korea, leading to a favorable condition for the development of the extreme rainfall. The enhanced barotropic anticyclonic anomalies also affected in warming the sea surface temperature anomalies covering from the eastern coast of East Asia to North Pacific Ocean, which in turn leaded to enhance warm air transporting back to the Republic of Korea.
This study aims to contribute to overcoming difficulties that disability assistance workers experience by verifying the effect of job stress and self-efficacy on their turnover intentions, and whether job engagement has a mediating effect in the process. For this purpose, a survey was performed on 290 disability assistance workers associated with disability support organizations in the Seoul and Gyeonggi area during the period of 2019.5.1.-2019.6.30. The collected survey data was analyzed with the SPSS 24.0 statistical software, the results of which are as follows. First, job stress and self-efficacy appears to affect job engagement. High levels of conflict and maladjustment in the workplace had adverse effects on job engagement, while high levels of emotional, evaluative, and informational support had positive effects. Second, job stress and self-efficacy also had an effect on turnover intentions. High levels of conflict, instability, and maladjustment in the workplace led to a higher level of turnover intentions. Third, job engagement had a mediating effect between job stress and turnover intentions. Fourth, job engagement had no mediating effect between self-efficacy and turnover intentions. These results serve to propose practical measures to reduce the job stress and improve the job engagement of disability assistance workers.
This study provides basic data for the development of nutrition education programs for high schools by examining adolescents' demand for nutrition education and their dietary and health behaviors. A survey was conducted for 500 students attending two high schools in the Gwangmyeong area. The questionnaire addressed their dietary habits, health behaviors, and nutrition education. In terms of meal conditions, 70.6% of all respondents had meals at least four times a day, 67.2% skipped breakfast frequently, and only 29.9% had breakfast with their family members. In addition, 66.0% reported a slightly unbalanced diet depending on the food (35.1% for vegetables and 28.2% for legumes). Nutrition labeling was checked occasionally (44.4%) by male respondents and surely (39.3%) by female respondents (p<0.01). In terms of health behaviors, 67.4% of male respondents reported a lack of sleep (5-7 hours), 33.3% of male respondents reported exercising three to four times a week, and 42.7% of female respondents reported no exercise. For the level of stress, 58.9% of male respondents reported "sometimes", and 43.0% of female respondents reported "always". For interest in nutrition education, 58.3% of the respondents reported "no". A majority of the respondents learned about nutrition through "the media or the Internet" (89.6%). The health behavior score was significantly carelated with dietary habits (p<0.01) and the stress score (p<0.05) for male students, and it was negatively correlated with checking nutrition labels (p<0.01) and positively correlated with the BMI for female students. These results suggest that appropriate health behaviors can help overcome stress and produce better dietary habits for male students, but for females, the results are ambiguous. A majority of the respondents (57.9%) perceived a need for nutrition education as part of the high school curriculum, and the content of such a curriculum included more meals with family members and the importance of breakfast. Based on the results, nutrition education for male students should focus on nutrition labeling, whereas that for female students, on exercise frequency and proper weight management.
This research had been executed to find out the structure of Magnolia obovata community, a dispersal range and characteristics of scatter investigation, and to prepare management measure of it. In the result of this study, Magnolia obovata was distributed in a native plant community from planting trees of UNESCO Peace Center. The maximum numbers of Magnolia obovata were found in $20{\sim}100m$ from trees of mother. Seed of Magnolia obovata has a characteristics of gravity dispersal. But some individuals was found in 420m from its tree of mother. Seeds of Magnolia obovata has a characteristics of animal dispersal, too. Major species of animal dispersal are Garrulus glandarius, Ciurus vulgaris coreae, and Tamias sibiricus asiaticus in the study site. The importance value between native plants and Magnolia obovata had a negative relation. Because Magnolia obovata is more shade tolerant than other trees. Also, the growth of Magnolia obovata is faster than other trees. And so if the influence of Magnolia obovata reduce, it is necessary to expand native plant community, and to cut Magnolia obovata over 10m of the height and over 10cm of the DBH, for preventing influence of Magnolia obovata.
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