• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2001.11a
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• pp.255-259
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• 2001

본 연구에서는 긍/부정 판단 과제 시 연령간 뇌파 반응의 차이를 밝히고자 한다. 실험 대상의 연령은 10명(20대 5명, 60대 5명)이었으며, 모두 오른손잡이였다. 실험과제는 의미과제와 일화과제로 구분되며 각각 12문항으로 구성된다. 의미기억과제 덧셈문제를, 일화기억 과제는 도형을 이용하였으며, 마우스 버튼을 눌러 긍/부정 판단 반응을 하도록 하였다. 뇌파는 PE1, PF2, F3, F4, O1, O2에서 단극유도법으로 측정되었으며, EOG를 측정하여 뇌파분석 시에 눈 깜박임으로 인하 noise를 제거하도록 하였다. 뇌파 분석은 원자료를 FFT(Fast Fourier Transformation)를 수행하여 각 대역의 상대적인 power를 구하는 방법으로 이루어졌다. 분석 결과, 반응 시간은 긍/부정판단간의 차이는 없었으나, 두 과제 모두에서 연령별로 유의미한 차이가 있었다. 긍/부정판단간의 따른 뇌파 반응은 명확한 차이가 나타나지 않았다. 연령에 따른 뇌파반응은 theta파, slow beta, fast beta에서 유의한 차이가 나타났다.

• 보건세계
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• v.60 no.3
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• pp.18-20
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• 2013

• 건강소식
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• v.18 no.9 s.190
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• pp.62-63
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• 1994

• 건강소식
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• v.30 no.6 s.331
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• pp.20-20
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• 2006

• Monthly Korean Chicken
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• v.17 no.10
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• pp.120-121
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• 2011

• 건강소식
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• v.28 no.10 s.311
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• pp.20-21
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• 2004

• Korean journal of communication and information
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• v.31
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• pp.355-378
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• 2005

This study aims to examine the differences of Humor Preferences and Uses by the distinction of sex and age. For this purpose, an experimental survey was analyzed. The major findings of this analysis could be summarized like as follows: There is few significant difference in the sex distinction, although men prefer aggressive humor more than women. But there are significant differences in the distinction of age. The teenagers prefer nonverbal humor compare to other ages, and the over forties prefer verbal humor. There are also significant differences of humor uses between age groups. The under twenties use humor more than over thirties. This study deliberates on the reason why there are significant differences of humor preferences and uses in the distinction of age. This study suggests one of the reasons which is related with face consciousness of korean.

• Korea journal of population studies
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• v.24 no.2
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• pp.117-147
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• 2001

The main purpose of this paper is to analyze sex and age composition of the 1994 North Korean census data. First this paper describes the background information concerning the first population census ever taken in North Korea since the separation of the North and South. It utilizes the available data to explain the trend and current population status of North Korea. The focus of this research is to point out and analyze the problems in the sex and age composition of the North Korean census data. One of the most striking characteristics of the census data is that an enormous portion of the young male population was excluded from the census counts. Such omissions are strongly suggested by a incredible drop in sex ratios for the age groups of 16 to 25. In addition, the total sum of the population by age groups turns out to be substantially smaller than the total sum of the population by geographical regions. The total discrepancy amounts to 691 thousand. Along with sex ratios and age ratios, Myers indices, UN age-sex accuracy indices, indices of relative difference, and indices of dissimilarity are calculated to analyze the characteristics and accuracy of sex and age composition in the North Korean census data. Finally, this paper readjusts the sex and age composition of the 1994 census data, and attempts to produce a more accurate population of North Korea.

• The Korean Journal of Pesticide Science
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• v.16 no.1
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• pp.21-27
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• 2012

Dietary exposure assessment by ages was performed in this study using pesticide residues data examined in vegetable commodities collected in Seoul from 2007 to 2009, and the vegetable intakes for Seoulites which were obtained after analysing the Korea National Health and Nutrition examination survey data of 2008. There was a statistical difference for vegetable intakes by ages (P<0.001). Vegetable intake was the highest in 40~59 age group and was the lowest in under 5 age group. The %ADI was calculated using vegetable pesticide residues and vegetable intake for Seoulites by ages. Considering below 1 of the %ADI by ages, the risk caused by pesticide residues in vegetables was very low and vegetable intake was safe.

• Development and Reproduction
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• v.13 no.4
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• pp.227-237
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• 2009

Recently, adipose mesenchymal stem cells (AdMSC) that are similar to bone marrow MSC and blood derived MSC are thought to be another source for stem cell therapy. However, the diseases that can be applied for stem cells therapy are age-dependent degenerative diseases. Accordingly, the present study investigated the growth and differentiation potential to neural cells of human AdMSC (hAdMSC) obtained from aged thirty, forty and fifty. The growth of cells and cell viability were measured by passage and neural differentiation of hAdMSC was induced in neural differentiation condition for 10 days. Our results demonstrated that cell number, viability and morphology were not different from hAdMSC by age and passage. Immunofluorescence analysis of neural cell marker (TuJ1, NSE, Sox2, GFAP or MAP2) demonstrated no significant differences in neural cell differentiation by age and passage. As the number of passage was increased, the mRNA level of MAP2 and Sox2 was decreased in hAdMSC from age of 50 compared to hAdMSC from age of 30. In conclusion, the present study demonstrated that ability of neural cell differentiation of hAdMSC was maintained with ages, suggesting that autologous stem cells from aged people can be applied for stem cell therapy with age-dependent neural disease with the same stem cell quality and ability as stem cell derived from young age.