• Journal of the Korean Ceramic Society
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• v.33 no.6
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• pp.679-685
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• 1996

• The Science & Technology
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• v.28 no.3 s.310
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• pp.78-80
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• 1995

지난 1월6일 부터 4일간 미국 네바다주 라스베가스 컨벤선센터에서 열린 '95 CES 겨울쇼를 참관하고 돌아왔다. 매년 겨울과 여름2회에 걸쳐 열고 있는 CES는 컴퓨터, 통신기기, 가전, 멀티미디어 제품을 전시하는 전자쇼로 최근에는 개인용 컴퓨터와 멀티미디어, 이동통신부문이 강화되고 있다.

• Korean Journal of Soil Science and Fertilizer
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• v.47 no.1
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• pp.41-47
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• 2014

Agricultural soils surrounding mine areas in South Korea are often contaminated with multiple metals such as Cd, Pb and Zn. It poses potential risks to plants, soil organisms, groundwater, and eventually human health. The aim of this study was to examine the changes in phytoavailability of Cd, Cu, Pb and Zn after application with calcined eggshell (CES; 0, 1, 3, and 5% W/W) in an agricultural soil contaminated by mine tailings. The contents of Cd, Cu, Pb and Zn in soils were 8.79, 65.4, 1602, and $692mgkg^{-1}$ (aqua regia dissolution), respectively. The experiments were conducted with lettuce (Lactuca sativa L. var. longifolia) grown under greenhouse conditions during a 30-d period. $NH_4NO_3$ solution was used to examine the mobile fraction of these metals in soil. The application of CES dramatically increased soil pH and inorganic carbon content in soil due to CaO and $CaCO_3$ of CES. The increased soil pH decreased the mobile fraction of Cd, Pb, Zn: from 3.49 to < $0.01mgkg^{-1}$ for Cd, from 79.4 to $1.75mgkg^{-1}$ for Pb, and from 29.6 to $1.13mgkg^{-1}$ for Zn with increasing treatment of CES from 0 to 5%. In contrast, the mobile fraction of Cu was increased from 0.05 to $3.08mgkg^{-1}$, probably due to the formation of soluble $CuCO_3{^0}$ and Cu-organic complex. This changes in the mobile fraction resulted in a diminished uptake of Cd, Pb and Zn by lettuce and an increased uptake of Cu: from 4.19 to < $0.001mgkg^{-1}$ dry weight (DW) for Cd, from 0.78 to < $0.001mgkg^{-1}$ DW for Pb, and from 133 to $50.0mgkg^{-1}$ DW for Zn and conversely, from 3.79 up to $8.21kg^{-1}$ DW for Cu. The increased contents of Cu in lettuce shoots did not exceed the toxic level of $>25mgkg^{-1}$ DW. The mobile contents of these metals in soils showed a strong relationship with their contents in plant roots and shoots. These results showed that CES effectively reduced the phytoavailability of Cd, Pb, and Zn to lettuce but elevated that of Cu in consequence of the changed binding forms of Cd, Cu, Pb, and Zn in soils. Based on these conclusions, CES can be used as an effective immobilization agent for Cd, Pb and Zn in contaminated soils. However, the CES should be applied in restricted doses due to too high increased pH in soils.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.6
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• pp.524-537
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• 2017

This study examined the relationship between the sociodemographic characteristics, health related factors, physical functions (ADL, IADL), mental functions (CES-D, MMSE-K), oral health impact profile (OHIP-14), and the quality of life (WHOQOL-BREF) for the elderly in long-term care facilities. The research was conducted in 602 facility allowance beneficiaries authorized to be eligible for long-term care in long-term care facilities through personal interviews using a structured questionnaire from May 1 to June 30, 2016. As a result, the quality of life was lower among females than males in the group receiving government subsidies than the group whose livelihood was maintained by themselves or their children, in the group with a longer period of care, in the drinking group than the non-drinking group, in the group with irregular exercise than the regular exercise, in the group with irregular meals than regular meals, in the group with poor subjective health conditions than good subjective health condition, in the group with a smaller number of daily toothbrushing, in the group with xerostomia than no xerostomia, in the group with a lower OHIP-14, in the group with a lower ADL and IADL, and in the group with a lower CES-D and MMSE-K. In particular, the quality of life was affected more by health-related factors and CES-D and MMSE-K than by other factors. Therefore, it is necessary to make efforts to prevent depression and cognitive impairment, including health-related behavior, with the objective of improving the quality of life for the elderly in long-term care facilities.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.4
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• pp.500-511
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• 2016

This study examined the effects of the physical functions (ADL, IADL), mental functions (CES-D, MMSE-K) and oral health impact profile (OHIP-14) on the quality of life (WHOQOL-BREF) of the elderly in long-term care facilities. The study subjects were 602 elderly people, who were surveyed at the entrance to the long-term care facilities. The interviews were conducted using a questionnaire during the period from May 1, to June 30, 2014. As a result, the quality of life was affected more by the CES-D and MMSE-K than by the ADL and IADL or by OHIP-14; the quality of life improved with a higher ADL, IADL, and OHIP-14 and a higher CES-D and MMSE-K. A higher OHIP-14, ADL and IADL resulted in a higher CES-D and MMSE-K. These results suggested that the quality of life is correlated significantly with the physical functions (ADL, IADL), mental functions (CES-D, MMSE-K), and the oral health impact profile (OHIP-14).

• Korean Journal of Culture and Social Issue
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• v.14 no.2
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• pp.41-61
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• 2008

This study was performed to investigate the North Korean defectors's depression through the CES-D and a projective test simultaneously. So 40 North Korean defectors and 40 South Koreans participated in this study. The results are the following. First, the North Korean defectors demonstrated more higher CES-D scores than the South Koreans, while there were not significant differences in the Rorschach depression-related indexes, DEPI, CDI, S-CON between two groups. Second, at the analysis of the sex difference effect, women among the North Korean defectors showed the most high CDI index scores. In addition, we analyzed the mean differences between two groups for morbid content, shading response, achromatic response, human movement response, form dimension response, Lamda, and the number of total response. However, there are not significant differences between two groups for those variables, except for form dimension(FD) response. It suggested the probability that the North Korean women defectors could experience more psychological distress underlyingly than the North Korean men defectors. Third, most importantly, the correlation between CES-D and DEPI in the Rorschach test was significantly different in the two groups(the North Korean defectors and the South Koreans). In conclusion, the self-report of the North Korean defectors on depression could be exaggerated. So we should be cautious to interpret the self report results of the North Korean defectors.

• Journal of Korean Public Health Nursing
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• v.32 no.2
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• pp.263-274
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• 2018

Purpose: This study examined the correlation of insomnia, sleep quality, depression, and circadian rhythm in nursing students. Methods: A total of 213 subjects completed a questionnaire consisting of their general characteristics, Insomnia Severity Index (ISI), Pittsburgh Sleep Quality Index (PSQI), Center for Epidemiologic Studies Depression (CES-D), and Composite Scale of Morningness (CSM). The collected data were analyzed by descriptive statistics, t-test, ANOVA, and Pearson's correlation coefficient using the SPSS 23.0 program. Results: The subjects' mean scores were ISI 7.18; PSQI 11.18; CES-D 16.00; and CSM 30.18. In insomnia, there were significant differences according to caffeine, perceived health status and major satisfaction. In sleep quality, there were significant differences according to perceived health status and major satisfaction. Significant differences in depression were observed according to gender, caffeine, subjective health status, major satisfaction, and circadian rhythm by drinking and exercise. A significant positive correlation was observed among ISI, PSQI, and CES-D. ISI and CES-D were negatively correlated. Conclusion: Tailored health care programs should be developed and applied to prevent and manage sleep-related and emotion-related problems in nursing students by considering the health status, major satisfaction, and gender.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.6
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• pp.1336-1341
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• 2013

Through reviewing the characteristics of digital TVs, which have emerged in CES since 2005, in the view of technology growth and substitution curves, this paper is to provide a prediction on the next generation's multi-media on smart environment. As a result, digital TV has been developed on the flow of its technology growth curve from the early version in 2005 to smart digital TV in 2013, which emphasizes the key word "connected", and it has already come to the market puberty.

• Journal of The Korean Association For Science Education
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• v.16 no.2
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• pp.217-225
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• 1996

Science-related attitudes, perceptions of science classroom environments, and their relationships were investigated for a sample of 535 primary and secondary school students. Two scales of the Test of Science-Related Attitudes and five scales of the Classroom Environment Scale(CES) were administered. Students' perceptions of preferred science classroom environments were also investigated using the same scales of the CES and compared with those of actual classroom environments. The results indicated the primary school students had the most positive attitudes on Enjoyment of Science Lesson and Career Interest in Science. They also had the highest scores on perceptions of actual classroom environments, while the high school students had the lowest scores. Regarding the relationships between science-related attitudes and perceptions of classroom environments, multiple correlations for the five scales of the CES were found to be significant(p<01). The scores of four scales-Involvement, Teacher Support, Order and Organization, Rule Clarity-are significantly correlated with the scores of Enjoyment of Science Lesson. Students' perceptions of preferred classroom environments on the four scales of the CES are significantly higher than those in actual environments. However, students' perceptions of actual environments on Task Orientation are similar to those of preferred environments, and are not significantly correlated with Enjoyment of Science Lesson. Educational implications are discussed.

• 한국신재생에너지학회:학술대회논문집
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• 2008.10a
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• pp.372-374
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• 2008

Korea classified into a development country when UNFCCC was concluded in 1995. So Korea doesn't have a GHG reduction duty until 2012. As the UNFCCC is strengthened, recently there is a growing interest in renewable energy and energy usage efficiency improvement for reducing GHG emission. It is associated with CES and renewable energy. CES is a total energy (heat, cooling and power)supplier in aggregated demand zone like a hotel, building, hospital and redevelopment district using CHP and it improves energy usage efficiency. At present, renewable energy is needed for GHG reduction duty but renewable energy doesn't have economic feasibility. So renewable energy is needed various support system to popularize which is a FIT and RPS. Especially RPS is carrying out instead of FIT in many advanced country and it will be inroduced in Korea. RPS is a duty which electricity service provider must guarantee renewable energy as much as specific ratio of total capacity. Therefore this study conducts an economic feasibility estimation of CES considering renewable energy when RPS will introduced in the future.