• Proceedings of KOSOMES biannual meeting
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• 2007.11a
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• pp.185-185
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• 2007

Starting at the beginning q the 20th century, increasing amounts of tetrach1oroethene (PCE) and trichloroethene (TCE)were manufactured due to the extensive use of these compounds in industry, in the military, and in private households, mainly as nonflammable solvents. This widespread use, along with careless handling and storage, are among the most serious contaminants of soil, sediment and groundwater. Highly chlorinated ethenes are typically not degraded through oxygenation by aerobic bacteria Since complete reductive dechlorination of PCE and TCE to ethene (ETH) has been observed in anaerobic enrichment culture, anaerobic dehalorespiring bacteria have received increased attention in the last decade. Under anaerobic conditions, these compounds con be reductively dehalogenated to less-chlorinated ethenes or innocuous ethene by microorganism through dehalorespiration. We have been studying anaerobic enrichment culture which used lactate as the electron donor for reductive dechlorination of PCE to ETH the anaerobic mixed microbial culture was enriched from the sediment sample taken from site contaminated with PCE. PCE was consistently and completely converted to ethene. In addition, the accumulation of intermediate products such as 1,2-ds-dichloroethene (cis-DCE) and vinyl chloride (VC) was observed in the anaerobic mixed microbial culture. the established dechlorinating enrichment culture was analyzed by DGGE using primers specific to DefrJ1ococcoides 16S rRNA gene sequences. In conclusion, we established the PCE dechlorinating enrichment culture and confirmed the existence of Dehalococcoides in an enrichment culture.

• Journal of the Korean earth science society
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• v.40 no.4
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• pp.340-352
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• 2019

The purpose of science education is scientific literacy, which is extended in its meaning in the $21^{st}$ century. Students must be equipped with the skills necessary to solve problems from the community beyond obtaining the knowledge from curiosity, which is called 'computational thinking'. In this paper, the authors tried to define computational thinking in science education from the view of scientific literacy in the $21^{st}$ century; (1) computational thinking is an explicit skill shown in the two steps of abstracting the problems and automating solutions, (2) computational thinking consists of concrete components and practices which are observable and measurable, (3) computational thinking is a catalyst for STEAM (Science, Technology, Engineering, Arts, and Mathematics) education, and (4) computational thinking is a cognitive process to be learned. More implication about the necessity of including computational thinking and its emphasis in implementing in science teaching and learning for the envisioned scientific literacy is added.

• Journal of agricultural medicine and community health
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• v.6 no.1
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• pp.73-81
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• 1981

This study was designed to analyze the result of Tb worker's activities on the performance of follow up program as part of the government tuberculosis program. The specific objectives of this study was also to improve the method of managing the patient who were registered at health center by the setting the priorities depend upon in their results of sputum examination and X-ray examination. All the medical records of 509 patients who were dropped out from government health center in Kyongnam area during 1978, were analyzed and interpreted. Followings are the result of the study. 1. The number of investigated cases were 509 (356% males and 153 females), by age the most prevalent group was 20~29 year old group as 27.3% and 20~40 year old group was 61.5%, above 61 year old was 14.9%. 2. The microscopic result of their sputum was positive in 52.1%, and by X-ray examination moderate advanced case was 63.9% minimal 18.5% and far advanced 17.6% in order. 3. Average duration of treatment was 9.03 months, 11.4 months in microscopic positive cases and 6.5 months in negative cases. 4. Conversion rate of microscopic positive case was 42.9% on sputum culture, in the negative cases, it was confirmed in negative 20.1% only by the initial sputum culture. 5. The rate who get take X-ray and sputum examination among any family member of the patients was 43.4% in positive cases, 20.9% in negative cases. 6. 80.2% of positive cases took X-ray for following up in every 6 month after registration, 41.0% in negative cases. 7. Defaulting reasons which recorded in individual card were undetermined reason (42.0%), treating elswhere (22. 4%), refused treatment (17.9%) and moved out (17.7%).

• Korean Journal of Environmental Agriculture
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• v.31 no.1
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• pp.52-59
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• 2012

BACKGROUND: Cultivation of genetically modified(GM) crops rapidly has increased in the global agricultural area. Among those, herbicide resistant GM crops are reported to have occupied 89.3 million hectares in 2010. However, cultivation of GM crops in the field evoked the concern of the possibility of gene transfer from transgenic plant into soil microorganisms. In our present study, we have assessed the effects of herbicide-resistant GM Chinese cabbage on the surrounding soil microbial community. METHODS AND RESULTS: The effects of a herbicide-resistant genetically modified (GM) Chinese cabbage on the soil microbial community in its field of growth were assessed using a conventional culture technique and also culture-independent molecular methods. Three replicate field plots were planted with a single GM and four non-GM Chinese cabbages (these included a non-GM counterpart). The soils around these plants were compared using colony counting, denaturing gradient gel electrophoresis and a species diversity index assessment during the growing periods. The bacterial, fungal and actinomycetes population densities of the GM Chinese cabbage soils were found to be within the range of those of the non-GM Chinese cabbage soils. The DGGE banding patterns of the GM and non-GM soils were also similar, suggesting that the bacterial community structures were stable within a given month and were unaffected by the presence of a GM plant. The similarities of the bacterial species diversity indices were consistent with this finding. CONCLUSION: These results indicate that soil microbial communities are unaffected by the cultivation of herbicide-resistant GM Chinese cabbage within the experimental time frame.

• The Journal of the Convergence on Culture Technology
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• v.5 no.2
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• pp.257-261
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• 2019

Service user satisfaction in the community service is also an important factor that leads to the improvement of the quality of the social service and the self - reliance of the service provider. The purpose of this paper is to examine the satisfaction factors affecting service continuity intentions in community service users, and provide direction and demand forecast information to improve user satisfaction and service satisfaction. In this study, the reliability test was conducted to check the reliability of each measurement tool and descriptive statistics and frequency analysis were conducted to identify the general characteristics of the study subjects. Logistic regression analysis was conducted to determine the effect of user satisfaction factors on service continuity. As a result of this study, it was confirmed that service user satisfaction in the community service is an important factor for improving the quality of social services and for the independence of service providers.

• Korean Journal of Social Welfare Studies
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• v.45 no.3
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• pp.179-207
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• 2014

The purpose of this study was to investigate the effects of the performance-oriented culture of a community welfare center on the job performance of its social workers. For that purpose, the study conducted a survey by mail with 1,162 social workers working for community welfare centers around Busan and Gyeongnam Province from January 4 to 31, 2013. Of the collected questionnaires, a total of 755 from 81 community welfare centers were used in the final analysis. This study used the SPSS 21.0, AMOS 21.0, and HLM 6.02 statistical software packages to perform data analysis for each hypothesis. The analysis results of the unconditional model of the hierarchical linear model, the unconditional random coefficient model, and the conditional model show that the job satisfaction and organizational commitment of social workers had positive (+) effects on their job performance. Secondly, customer orientation, one of the sub-elements of performance-oriented culture, had positive (+) effects on the job performance of social workers, whereas the result orientation had negative (-) effects on it. In addition, innovation orientation had no impacts on their job performance. Based on those findings, the study proposed management plans for organizational culture to enhance the job performance of social workers.

• Journal of Families and Better Life
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• v.27 no.1
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• pp.61-71
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• 2009

The purpose of this study was to resolve the issues of inferior housing environment and the population decrease in rural community by improving the environment and attracting urban inhabitants. A simulation on the costs and the local programs was operated from a point of view that Pension Insurance House with Long-term Lease and a plan for the program in connection with local resources should be accompanied to attract urban inhabitants. The study was carried out through mainly documents analysis and specialists' opinions. The simulation results are as follows. Firstly, the pre-existing rural housing development projects have only emphasized the hardware, while underestimated the post-management with operating programs. The software should be underlined when Pension Insurance House is developed. Secondly, as a result of the simulation on construction expenditure and the operating and maintenance cost for 30 years, about 82.3 million Wons are necessary residential expenses for 15 years per unit. Thirdly, in case of MUJU County, it has made the most of its pre-existing institutions. It's medical institutions provide medical care system with health education, facilities related leisure and culture offer recreational programs and the local community center and its program of each town helps new habitants adopt to the rural life. Additionally, the employment project of a local welfare center allow people living in a rural community to continue their careers with their talents and interests through local class programs for a life worth living. Lastly, guide for getting information of rural life, local community gathering and preliminary education should be carried out to reduce expectant tenants' incompatibility and assist them settle down early. The community program expansion is also required at the local government level.

• International Journal of Advanced Culture Technology
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• v.8 no.4
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• pp.64-76
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• 2020

Purpose: Several screening tools have been developed to identify sarcopenia in rural community-dwelling older adults. We aimed to compare the diagnostic accuracy of two such tools, namely the SARC-F and SARC-CalF assessments. Methods: This cross-sectional study on 388 community-dwelling older adults comprised 254 women and 134 men with a mean age of 77.8 ± 6.26 year in Korea. We assessed muscle mass, muscle strength, and physical performance using a bioimpedance analysis device, hydraulic hand dynamometer, and 4 m gait speed test, respectively. Three widely-used diagnostic criteria [the Asian Working Group for Sarcopenia (AWGS), European Working Group on Sarcopenia in Older People, and the International Working Group on Sarcopenia] were applied. Sensitivity and specificity analyses were performed on the SARC-CalF and SARC-F tests. We used receiver-operating characteristic curves and the area under the curves (AUCs) to compare the diagnostic accuracy of the assessments with regard to sarcopenia. Results: An analysis using four sets of diagnostic criteria showed that the prevalence of sarcopenia was 27.6% to 41.0%. Using the AWGS 2019 criteria as a reference standard, the SARC-CalF had a sensitivity of 83.02% and a specificity of 53.71% in the entire study population, whereas the SARC-F had a sensitivity of 79.87% and a specificity of 41.92%. The AUCs for the SARC-CalF and SARC-F tests were 0.725 (95% confidence interval 0.678-0.769) and 0.645 (95% confidence interval 0.595-0.693), respectively (p<001). In the analyses using the other three diagnostic criteria, similarity was also confirmed. Conclusion: SARC-CalF showed better sensitivity than did SARC-F when diagnosing sarcopenia in rural community-dwelling older adults. Further studies are needed to verify this finding in different populations.

• The Journal of the Convergence on Culture Technology
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• v.8 no.1
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• pp.299-306
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• 2022

Today, the paradigm of lifelong education has changed, emphasizing the role of universities as a lifelong educational institution. Re-opening a new horizon as a lifelong education institution that is not only centered on leisure education in the hierarchy where lifelong education can be afforded as before, or simply in line with changes in the social environment and the lengthened life cycle of the aging era. Let's propose a structured figure. Universities now have to create a virtuous circle structure that coexists not only with the role of the university itself, but with constant interaction with the local community. Adult learners, in particular, play a strong role in the development of their communities, so they are educated at the university to grow further and create structures that can return talent to the communities that go out into society. I should go. In the future, the university will actively open its doors to adult learners, position the university at the center of lifelong education, and in order to contribute to the development of the community, it will have to interact and cooperate with the community.

• Journal of the Korea Society of Computer and Information
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• v.24 no.2
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• pp.201-207
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• 2019

The purpose of this study is to suggest some implications by empirical testing the relationships between children's self-perception and human rights recognition in local children's center. For this study, Total 438 children were sampled and surveyed. The analytical results are the followings. First, personal characteristics was shown to have a significant effect to human right recognition. Second, self-perception was shown to have a significant effect to human right recognition. Third, right guarantee of center was shown to moderate the relationship between self-perception and human right recognition. This study provides some theoretical and polcy implications basing on these analytical results.