• Proceedings of the Korean Society for Language and Information Conference
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• 2007.11a
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• pp.532-541
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• 2007

This paper investigates children's comprehension and production of demonstrative pronouns (DPs), 'zhege' (this) and 'nage' (that), in Mandarin Chinese. Subjects are children of ages three, four, five and six. Based on the results of the present experiment, children's developmental stages and the corresponding age grading are provided. Also, the present study incorporates a physical clue into the experiment. The result suggests that in the acquisition of deixis children rely highly on physical context to work out the meaning distinction. In addition, Piaget's egocentrism hypothesis and H. Clark's marking hypothesis are examined in the study. The result seems to support the egocentrism hypothesis. Subjects under the age of six do fail to shift the deictic center when they and the experimenter have a different perspective. As for the marking hypothesis, the study seems to challenge the hypothesis. The result shows that children actually performed better on the marked term 'zhege' than the unmarked member 'nage'.

• Asian review of World Histories
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• v.1 no.1
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• pp.85-116
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• 2013

The theory of terrestrial impact which has been developed by the astronomy scientists since 1970s is employed for this article in a new angle that atmospheric conditions of our planet should be adopted in the interpretation of the history of mankind. Large and small terrestrial impacts must be acknowledged as key tasks in terms of the study of 'world history'. The Society of Interdisciplinary Studies has already advocated that the 'Bronze Age Civilization' was strongly influenced by the long term terrestrial impact phenomena. Based on historical materials from Korea, the present study was able to identify the years 680-880, 1100-1220, 1340-1420, and 1490-1760 as periods in which territorial impacts occurred.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2009.11a
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• pp.101-105
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• 2009

The purpose of this study is to reduce autogenous shrinkage of high-strength concrete. Previous studies were investigated to measure the effects of reductions to autogenous shrinkage when applying bean oil to concrete. The results of the study showed that as the mixture rate of BO increased, fluidity decreased and air quantity decreased slightly. In early age, compressed strength increased compared to Plain while decreased in long-term age. As an autogenous shrinkage characteristic, reduction effect increased according to increase in mixture rate. When mixture rate is 1%, approximately 30% decreased compared to Plain in BO. At 2%, BO decreased by about 32%. In addition, in the case of BO, autogenous shrinkage was shown to decrease compared to expansive additive and shrinkage-reducing agent.

• Journal of the Korean Home Economics Association
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• v.41 no.3
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• pp.57-71
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• 2003

The purpose of this research was to find out how the interactions between mothers and their children differed depending on the age of the child and the type of book. The subjects of this study were thirty 2-year-olds and thirty 4-year-olds and their mothers. The number of male and female children was the same. The maternal interactions were analyzed in term of attention gelling, explanation, request, asking questions, and feedbacks, and the children's verbal and nonverbal reactions were also analyzed. The results showed that the characteristics of the mother and child interactions were different according the age of the child and the type of picture books. The results were discussed from the perspective of maternal scaffolding and the quality of mother-child interactions. The implications of the study were suggested in terms of the importance of the picture books and maternal roles in reading pictures books to their child.

• Journal of the Korea institute for structural maintenance and inspection
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• v.3 no.3
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• pp.177-185
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• 1999

In this study, study about fly ash and blast-furnace slag used as substitutive materials for cement, and the influence on the neutralization of high flow concrete durability with these substitutive materials was performed and analyzed. The results are as follows 1) Aggregate segregation was partially improved with the progress of the admixture input at the mix proportion above slump flow 65 cm 2) Compressive strength with the progress of the increasement of fly ash input was decreased in early age, but decrease range was improved in long term age. Also, in case of blast-furnace, similar or improved compressive strength was appeared. 3) The neutralization depth with fly ash input was noticeably increased. But blast-furnace slag was effective to prevent. 4) In this experiment, high powder content was advantageously affected on preventive effect of the neutralization, and the relationship between the compressive strength and the neutralization depth was inversely proportional.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.231-232
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• 2021

This study intended to verify the alkali activation effect of concrete by replacing FA and CBS-Dust with cement to find out how to utilize CBS-Dust generated during cement production. Experiments result shows that air flow and liquidity can be secured when CBS-Dust is replaced by 5% in FA 20%, and that relatively high compressive strength is expressed in the initial age of 3 days and 7 days and long-term age of 91 days.

• Asian-Australasian Journal of Animal Sciences
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• v.15 no.11
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• pp.1653-1658
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• 2002

The objectives of this study were to examine calpain activity and meat tenderness by three different feeding patterns in Korean native cattle (KNC). Total forty-five animals were assigned each fifteen in long term restriction feeding (LTFR), long-term restriction feeding and hormone treatment (LTFR-tH), and short term non-restriction feeding (STFNR), respectively. Concentrate was restricted based on body weight in exp 1 and 2. However, it was fed ad libitum in exp. 3. Hormonal implantation was made with $M-PO^{TM}$ for bulls and with $F-TO^{TM}$ for heifers at 18, 20, 22 months of age in exp. 2. Animals were purchased (3-5 month old) from local cattle market and managed in two local farms and university research unit at three different years. Animals were slaughtered at 24 months for long-term trial and at 18 month for short term-trial. Loin and tender loin muscle was used for calpain activity and meat quality. Calpain proteolytic system was not changed by treatment. However, calpastatin activity was low in short-term trial. The calpain and calpastatin activity is reciprocal relationship, therefore, the high calpain activity may effect on quality grade. The shear force value was decreased as the processing of aging after postmortem. On the other hand, the cooking loss was significantly higher in short-term than in long-term trial, and then gradually decreased by the aging. Hormone implants to increase meat yield influenced to calpastatin activity more powerfully than calpain activity to meat tenderness. In meat color-a*, there was not significant difference in loin. Meat color-b* was decreased as postmortem aging time increased in tenderloin. Western blots were done to learn whether these proteins are degraded during postmortem storage and whether this degradation temporally parallels the decrease of shear force value. Vinculin was detected at 0 day and 1 day and degraded after 3 day. In conclusion, Calpain activity was affected slightly on meat tenderness. But meat tenderness was influenced by calpastatin, more effectively.

• Korean Journal of Human Ecology
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• v.8 no.2
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• pp.245-254
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• 1999

The purpose of this study was to investigate parenting attitude of juvenile delinquent parents. The subjects ware 95 boys and 60 girls. According to the parenting attitude of juvenile delinquent on the ground of sex, fathers' parenting attitude showed connective relation with permissive and democratic attitude. Also in term of home environment, mothers' age, place of growth and fathers' job had the connection of overcaring. Though correlative with parenting attitude of juvenile delinquent, consistent parenting attitude was showed.

• Korean Security Journal
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• no.5
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• pp.71-88
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• 2002

This research is aimed to clarify police officer's working personality characteristics. The sample was divide in two sub-groups according to research group of career police officer and comparative group of novice police officer. The followings are list of significant tendencies. First, career police officer have aggression, cynicisms, suspicion contrast to novice police officer. Second, working personalities of aggression, cynicisms, suspicion is relationship between age, rank, service term. Findings of this study is that working personality of police officer in korea was made survey empirically, and identified change process of police officer's working personality.

• Clinical and Experimental Pediatrics
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• v.53 no.4
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• pp.477-480
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• 2010

Advances in research and medical and supportive care have contributed to a growing population of adults formerly treated for childhood cancer. History of cancer and its therapy can have significant life-long health implications. Late effects of cancer therapy can be insidious on onset, occur outside the pediatric age, and contribute to premature morbidity and mortality. In this review, I have focused on the key long-term effects of pediatric cancer therapy, particularly on the metabolic syndrome, including cardiopulmonary complications, infertility, and secondary neoplasm.