• 대한안전경영과학회지
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• 제17권1호
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• pp.1-11
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• 2015

The efficient safety estimation for a business should analyze an accident data by considering every possible and potential factor. Thus, we consider several factors to build the safety estimation model to meet fairness and rationality. This paper present the yearly statistic data of accident from KOSHA analyze the data by industry, scale, year of service of a employee, age and other factors; build the safety estimation model for the business based on the accident report derived the analysis. The estimation model is established by the weights for accident type, degree, scale, industry, year of service, and age of the employee derived from ANP(Analytic Network Process).

• 아동학회지
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• 제26권2호
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• pp.193-207
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• 2005

The present research studied children's coping strategies by age, sex, and frequency of victimization and examined the relationship of coping strategies to loneliness in peer victimization. Participants were 434 children from the 3rd to 6th grades of an urban elementary school. Self-report data indicated seven types of coping strategies : cognitive distancing, adult support seeking, peer support seeking, negative problem solving, positive problem solving, internalizing, and externalizing. With increasing age, children used less adult support seeking and more positive problem solving. While girls used more adult and peer support seeking, boys employed more externalizing and negative problem solving. Children with higher victimization frequencies were more likely to use negative problem solving and internalization. Lack of strategies for seeking social support was associated with loneliness.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2008년도 추계 학술발표회 제20권2호
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• pp.621-624
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• 2008

This study deal with the effects of ground granulated blast furnace slag (SG) and silica fume (SF) on the mechanical characteristics of pavement concrete made with ordinary portland cement and regulated set cement. Compressive and flexural strengths as well as unit weight of concretes were monitored. From a result of the study, it was found that the SG was effective for development of flexural strength of concretes, but not for development of compressive strength. However, it must be noted that the present study is limited only to the data by the age of 28 days. More data at long-term age should be accumulated for reliability.

• 대한치과의사협회지
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• 제19권2호통권141호
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• pp.181-185
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• 1981

In this study an attempt has been made to throw some light on the problem of the mandibular third molar on measurement made from 302 orthopantomograms of patients at the age of 8 to 20 years. The following conclusions were drawn on the basis of the present study. 1. The amount of growth from the lower first molar to the anterior border of the ramus from 8 years to 14 years was 7.9mm in the male and 7.5mm in the female. The growth from 15years 20 years was 4.5mm in the male and 2.6mm in the female. 2. The growth from the lower first molar to the posterior border of the ramus from 8 years to 14 years was 10mm in the male and 9.8mm in the female. The growth occurred after that was 5.8mm in the male and 2.0mm in the female. 3. The difference between A and C measurements for the various age groups remained fairly constant in the male and female.

• 음성과학
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• 제15권3호
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• pp.133-144
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• 2008

The present study examined multicultural family children's articulation accuracy and phonological process using Assessment of Phonology and Articulation for Children(APAC), and compared them with normally developing children. The subjects of this study were 24 multicultural family children between ages 3 years, 6 months and 3 years, 11 months. The multicultural family children's articulation accuracy was significantly lower than the normally developing children's. In case of the normally developing children, phonological processes the multicultural family children showed were observed at a younger age and did not appear at the age of the children participating in this study. The Japanese multicultural family children and the non Japanese multicultural family children showed different rate of the changes. This result shows that articulation development in the multicultural family children may be different among them according to the classification and that the children's error patterns are related to their mothers' native language. The results of this study are proposed to be applicable to articulation assessment and treatment.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 가을 학술발표회 논문집
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• pp.309-312
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• 2003

Quasi-instanteneously performed creep loading is probably one way to seperate the viscous and the plastic creep from the elastic deformation. For mature concrete no differences seem to exist depending on whether the loading is rapidly applied or not. At early age the plastic deformations probably dominate the deformation. A series of test have been done to measure the quasi-instanteneous deformation in concrete specimens according to loading durations and concrete ages. The present study indicates that even very short-term loading contains creep deformation. As concrete is younger and load duration is longer, the proportion of creep deformation in quasi-instanteneous deformation is increased.

• 농촌지도와개발
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• 제14권2호
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• pp.471-491
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• 2007

The purpose of this study were (1) to thumbnail sketch of present general condition of foreigners and international marriage in Korea, (2) to study special trend of international marriage in rural Korea, particularly immigration connected with poverty, and (3) to focus on prospect of the problem of mixed-bloods, especially half blood children in rural Korea. Many of foreigners were treated discriminatingly, for example racial discrimination and wage discrimination. And discrimination to mixed-blood children will be happen in future. They are in a disadvantageous position because of economic status and appearances. Half blood children have korean nationality because one of his parent is korean. When they grow up and reach their the age of puberty and the age of working, they will resist to discrimination in working and marriage. I had examined precedent studies, and class theory in general, and to suggest it is time to looking for way of reduce social cost and way of coexistence.

• Advances in pediatric surgery
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• 제3권2호
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• pp.164-167
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• 1997

Conjoined twins are one of the rarest and most challenging congenital anomalies in pediatric surgery. Successful surgical separation is difficult because it the majority of conjoined twins in is technically typical to separate shared vital organs successfully. The timing of separation is variable, but separation is usually delayed until such infants are relatively mature(i.e, 9-12 months of age). Operative survival was 50 % in the neonatal period, but 90 % in those over 4 months of age. The present case was successfully separated early beacase of cardiac problems in one of the twins. These twins were omphalopagus and only the liver was shared through a bridge. The vascular and biliary trees were independent from each other. Successful surgical separation was on 11th day of life, but one died of sepsis 18 days after operation.

• 대한가정학회지
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• 제29권3호
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• pp.191-207
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• 1991

The present study investigated the parent's educational views according to sex, age, educational level of parent, and social class. The study also examined parent's educational views resulting from participation of parent education and the types of parent education of marital partner. The subjects were consisted of 162 couples(324 persons) whose children were attending elementary school in Seoul. The instrument was "A tools of Parent's Educational Views Measurement". The major findings are: 1. Parent's educational views showed a tendency to be adult oriented rather than child centered regardless of parent's sex and age. However, the higher parent's education and SES are, the more child oriented views are. 2. Mothers who had participated in the specialized parent education were found to be child oriented educational views. 3. The fathers whose wives participated in the specilized parent education showed the child oriented educational views, probably because of mothers' influence on fathers' educational views.

• 천문학회지
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• 제29권spc1호
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• pp.133-134
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• 1996

We present the systematic variations of H$\beta$ index of simple stellar populations due to horizontal-branch (HB) stars. Most of the previous works have been done without careful considerations of HB stars. Since the Balmer line strengths are very sensitive to the temperature, including the HB stars are quite important. We found that the strength of H,6 index is strongly affected by HB stars, and hence the age estimation without careful consideration of the variation of HB morphology with metallicity and age would underestimate the ages of ellipticals.