• Journal of Environmental Health Sciences
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• v.12 no.1
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• pp.69-78
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• 1986

In order to determine the content levels of trace metals in cow's milk, 79 market milk samples were collected from markets in major cities of Korea from July to August, 1985 and analyzed for content levels of Cu, Fe, Zn, Mn, Pb, Cd. The Results were as follows Cu, average 43.5 $\mu$g/l range 14 ~ 172.7 $\mu$g/l Fe, average 398.4 $\mu$g/l range 35 ~ 1,873 $\mu$g/l Zn, average 2.917 mg/l range 1.233 ~ 7.46 mg/l Mn, average 26.74 $\mu$g/l range 7.6 ~ 102 $\mu$g/l Pb, average 33.9 $\mu$g/l range N.D. ~ 105 $\mu$g/l Cd, average 1.73 $\mu$g/l range N.D. ~ 5.4 $\mu$g/l

• The Journal of Korean Academic Society of Nursing Education
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• v.13 no.2
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• pp.229-236
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• 2007

Purpose: The purpose of this study was to investigate the relationship between critical thinking disposition and self-efficacy of college nursing student. Method: Data was collected from 186 nursing students in D and M cities. Result: The average scores were; critical thinking disposition 62.59 and self efficacy 88.91. The critical thinking disposition level was significantly different according to the general characteristics of the high school system. The self-efficacy level was significantly different according to the general characteristics of gender. The critical thinking disposition level and self-efficacy level showed a positive correlation(r=.335, p<.000). Conclusion: A strategy for development of the critical thinking disposition and self-efficacy is needed for nursing students.

• Proceedings of the Korea Concrete Institute Conference
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• 2005.11a
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• pp.695-698
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• 2005

Ever since man learnt to build homes and cities around 10,000 years ago, clay materials has undoubtedly been one of the most widely-used construction materials in the world. However, the clay has poor strength, water resistance and durability, thus being limitedly used as calcined clay after being calcined. Pozzolan materials is to improve the strength and the durability of concrete as a result of the pozzolanic reaction. Therefore, the purpose of this study is to analyzes ingredient about clay mineral about Chung-buk area 10 places and to examine the application of clay minerals for the concrete admixtures.

• Proceedings of the Korea Concrete Institute Conference
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• 2005.11a
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• pp.459-462
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• 2005

Recently, interest grew on the quality of aggregates following the diminution of primary resources from river and the growing construction demand which exhausted high-quality sand sources around large cities and incited the use of low grade aggregates like shore sand and sea sand that can be supplied in natural state. Moreover, the most sensitive aspect highlighted by the unstability of aggregate supply is the quality. The extreme insufficiency of quality criteria about the materials currently used as substitute aggregates and about concrete mixed with such materials is also critical. This study investigated influence of qualities of concrete which is using mixed crushed sand and natural sand

• Journal of Construction Engineering and Project Management
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• v.7 no.1
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• pp.30-36
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• 2017

Most local agencies such as counties and small cities continuously express difficulties in making technically and financially defensible decisions on their pavement infrastructure maintenance and rehabilitation. Unlike pavement systems managed by state highway agencies, the total lane-miles of many local pavements are significantly short and they are managed by a limited number of staff who typically have multiple responsibilities. Most local agencies also do not have historical pavement performance data and the lack of a systematic decision making framework exacerbates the problem. A structured framework and an easily accessible decision support tool that reflects their local requirements, practices and operational conditions would greatly assist them in making consistent and defensible decisions. This study fills this gap by developing a systematic pavement treatment selection framework and a spreadsheet based tool for local agencies. It is expected that the proposed framework will significantly help local agencies to improve their pavement asset management practices at the project level.

• KIEAE Journal
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• v.2 no.2
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• pp.23-31
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• 2002

The purpose of this study is to suggest an environmentally friendly energy system of ecological architecture, with the reference to foreign cases, judge feasibility of it. The ecological architecture is very similar to the natural ecosystem. There is growing international scientific consensus that human activities are having a discernible effect on the global climate. Therefore, with a precise understanding of the concept of ecological approach and concrete perception of the necessity it, an establishment of planning which recognizes the ecological architecture as a organism a same time, ensures diversity, stability and cycling stemmed from the ecosystem to various activities through a ecological structure shall bring the introduction of substantial ecological architecture into domestic realm. As a result, in this Age of industrial science, We are proposing useful materials and suggestion regarding the ecological architecture planning of korean cities, by preestimating the characteristics of a city heading toward the Age of the new ecological environment.

• KIEAE Journal
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• v.7 no.4
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• pp.31-38
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• 2007

Streetscape plays on important role in urban cities. Characteristics of streets is basically defined by the building facade, signs, plants and paving during the daytime. However at night, street receives a new appearance due to the shop light from the buildings, exterior lightings, signboards and street light, and it creates most of the image of the streets. This study aims to analyze the luminous environment and its subjective image of two different pedestrian's commercial streets. Insa-dong street and Myungdong street were chosen for the study. Horizontal illuminance and luminance on building surface, advertisement billboards and pedestrian road were measured. Thirty students were asked to rate the five scaled questionnaire on their subjective images of the streets. Statistical analysis including profile, correlation and T-test are conducted and some findings are discussed

• Korean Journal of Child Studies
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• v.19 no.2
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• pp.3-17
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• 1998

Five metropolitan cities in Korea were the setting for a survey of the use of media by 622 families. Correlations with children's problem behavior, cognitive development, and family environment were analyzed. Parents completed questionnaires on media use by family members, children's problem behavior, and family environment. Children were tested individually with 4 sub-scales of the Wechsler Intelligence Scale. There were age as well as sex differences in the use of media. There were correlations between children's use of media and their problem behavior, intelligence, and family environment. Regression analyses revealed that the parents' use of media was the most important determinant of children's use of media. Therefore, adult media education as well as children's education is recommended as a way to improve the media environment for children.

• Korean Journal of Child Studies
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• v.29 no.4
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• pp.231-248
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• 2008

This research used Q-Methodology to investigate kindergarten teachers' perception style regarding children's creativity. The 30 participants had various teaching experiences and educational backgrounds and were teaching in a variety of types of kindergartens in the cities of Busan and Ulsan. Individual teacher's subjective perspective was the main target for the analysis. Results showed four types of teachers' perceptions of creativity : 1) perceiving creativity as children's creative thinking ability, 2) focusing on creative curriculum development 3) perceiving creativity as children's creative personality, and 4) focusing on either teacher's thorough understanding of children's creativity or teachers' creativity. These results indicate that teachers tend to perceive creativity in narrow and specific domains. These findings are discussed with respect to their educational implications.

• Korean Journal of Child Studies
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• v.29 no.4
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• pp.79-95
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• 2008

This study investigated developmental pathways mediating effects of child abuse on peer rejection. Participants were 904 poor children aged 10-15 from 16 nationwide cities/provinces who receive financial sponsorship from Childfund in cooperation with the Ministry for Health, Welfare and Family Affairs. Structural equation modeling was employed for statistical analyses. Results showed that child abuse was directly associated with heightened risk of rejection by peers; the relationship was indirectly mediated by aggression and cognitive ability. The hypothesized partially mediated model had a better model fit than the fully mediated model. Aggression and low cognitive ability, significant effects of abuse, were associated with peer rejection. Social withdrawal, also associated with child abuse, did not account for the association between abuse and peer rejection.