• 산업공학
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• 제13권2호
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• pp.147-156
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• 2000

It is known that the human stature and its related dimensions generally increase until the late teens or early twenties, remain relatively constant throughout early adulthood, and decline from early-to-middle adulthood into old age. However, there is exception that the length of the human ears, which continue to grow throughout life. In this study, 600 Korean male and female subjects aging from 17 to 89 were selected. Four different points of external ears including Pinna length, ear connection point length, Concha length, and Lobule thickness were measured along with other relative subjects' demographic data(e.g., age, stature, weight) to determine the relationship among these obtained data. The results showed that the age, sex, and different ethnic populations were functions of ear dimensions similar to the human stature. For example, the Pinna length increases as the age increases(r= 0.689, p<0.00l). The primary objective of this study was thus to provide anthropometric dimensions of Korean ear for the product designers and recommend the appropriate product design solutions in relation to human ear. Based on the results of this study, it is suggested that the continuing growth of the human body parts should be considered in the application of anthropometric data to the design of the things especially for human use.

• 대한치과기공학회지
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• 제40권4호
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• pp.239-247
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• 2018

Purpose: The purpose of this study was to investigate the denture attachment status and the denture need of elderly Koreans and to provide basic data for improving the quality of life by developing methods and education programs for the oral health of the elderly. Methods: This study selected 4,340 persons who completed questionnaires and oral examinations among elderly people aged 65 or older only from the National Health and Nutrition Examination Survey data of the 6th period (2013-2015). Results: There was a significant relationship between age, residence, and education level in complete dentures. There was a significant relationship between gender, age, residence, and education level in the partial denture wearing state. In the complete denture need, there was a significant relationship with age. The need for partial denture was found to be significant in gender, age, and residence. Conclusion : Based on the results of this study, it can be used as basic data for oral health education and dental prosthesis related to denture which can improve oral health of the elderly in the future.

• 한국컴퓨터정보학회논문지
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• 제22권12호
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• pp.163-170
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• 2017

The purpose of this study is to introduce policy and theoretical implications by analyzing affecting factors for the elder's happiness. For this study, we analyzed data using HLM. Data include a world value survey(hereafter, WVS) as personal level analysis data and also OECD's Social Expenditure Database(hereafter, SOCX) and database from the World Bank as national level analysis data. The subjects of personal level analysis were the elder who are over 65-years od age, and they were total 3,297 people, and while the subjects of national level analysis were total 9 OECD countries. For the data analysis, hierarchial linear model(HLM) analysis was done by using HML 7.0 program. As a result of analysis, First, for the elderly's happiness, they should improve self-disposition, members of social groups, and social class. Second, the old-age pension and the survivor's pension had no meaningful effect on the happiness. but it was found that self - disposition, social class, gender, and health status showed meaningful interaction effect according to old - age pension, survivor pension, per capita GDP, income inequality. This suggests that efforts to improve the happiness of the elderly should be made at the individual level and the national level at the same time.

• 노동경제논집
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• 제41권3호
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• pp.161-186
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• 2018

1980년대 이후 특허 데이터를 이용한 많은 연구가 있었지만, 특허문서에 나온 기술 개발자의 정보를 이용한 연구는 큰 진전을 이루지 못하였다. 이는 해외 모든 국가의 경우 특허에 기재된 개발자의 이름만으로는 동일인 파악이 어렵기 때문이다. 한국 특허 데이터에 포함된 개발자의 식별번호, 생년, 그리고 성별 정보를 이용하여, 본 연구는 생애주기에서 개발자의 기술개발 생산성이 어떻게 변하는지, 세대별로 생산성의 향상이 있었는지 분석하였다. 앞으로 이 개발자 패널데이터를 이용하여 기술개발의 중요한 요소인 기술인력에 관한 연구가 크게 진전되리라고 기대한다.

• Journal of Preventive Medicine and Public Health
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• 제28권3호
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• pp.651-662
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• 1995

In Korea there is no specific method of age adjustment in noise induced hearing loss(NIHL). We attempted the age adjustment to understand the effects of age on the diagnosis of NIHL. We used the International Standard Organization 1999 as an age adjustment method. We used the 1, 617 otologically normal person's hearing data from a health examination center, and 206 workers diagnosed as NIHL. We concluded as follows; 1. The ISO 7029 function used for age specific hearing loss is not suited to Korean people. 2. The mean of age specific hearing loss is 11.0 6.2dB and the older of age, the more decrease on hearing loss, especially in 4000Hz. 3. The difference of NIHL between before age adjustment and after age adjustment in the 3rd decade is 5.4dB, in the 4th decade is 6.7dB, in the 5th decade is 8.5dB, in the 6th decade is 10.4dB, and in the 7th decade is 12.9dB. The older, the more is the difference. 4. After age adjustment, the number of workers diagnosed as NIHL decreases to 60% of unadjusted.

• 음성과학
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• 제12권2호
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• pp.139-149
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• 2005

The purpose of this study was to propose a preliminary norm for 'Korean-Test of Articulation for Children(K-TAC)'. The K-TAC was designed to test 19 Korean consonants in various phonetic contexts through 37 words. We collected the data of 220 normally developing children aged 2;6(years;months) to 6;5. We analyzed the mean percentage of consonants correct and the age of acquisition for K-TAC. The results were as follows: first, The mean percentage was over 60% at late 2 years of age, over 80% at th age of 3, and over 90% after the age of 4. There were significant differences among age groups. Second, based on the criterion of correct production by 75% of children, Korean children acquired stops and nasals except for SF velars, glottal fricative, SF liquid and affricates by late 2 or 3 years of age. After that they acquired SF velars at the age of 4 and SI liquid at the age of 5. However, they could not acquire alveolar fricatives by the age of late 6. Third, if the distorted sounds were scored as correct, they acquired SI liquid at 4 years of age and alveolar fricatives at 5 years of age.

• 복식문화연구
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• 제25권6호
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• pp.719-740
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• 2017

Sociocultural and demographic shifts have resulted in a changing perception of older age. Older women, historically subjected to age-ordering rules of dress, have increasingly refused to be marginalized fashion consumers and have been striving to construct a more positive age identity. Although studies have examined consumers' negotiation of marginalized identities, age identity has not received much attention as a type of marginalized identity. This study argues that Pinterest acts as a platform for identity work by allowing older women to creatively reconstruct their sense of self by saving images and organizing them into thematic boards. Drawing on symbolic interactionism theory and notions of digital self-presentation, this paper seeks to explore the discursive practices that older women employ on Pinterest to resist ageist fashion discourses. The sample consisted of 15 fashion-oriented Pinterest profiles of older women. Netnographic inquiry was employed first to examine what images were saved and what thematic boards were created. Three analytical frameworks for visual data analysis were integrated to further scrutinize the visual texts within the thematic boards. The analyses revealed three main themes-rejecting age, accepting age, and consuming age. The themes that emerged formed the basis for an age identity reconstruction process whereby women attempted to bridge the existing gap between older age and mainstream fashion discourse.

• 한국인구학
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• 제3권1호
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• pp.52-61
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• 1979

The purpose of the study is to construct a life table for population. It is based on the fraction of last year of life, $a_X$. The data necessary for this purpose have been obtained from the 1975 Population Census Report of Korea and the Vital Statistics of Shindong-myon, Chunseong-gun, Gangwon Province which is collected for the Seoul National University public health program. Age specific death rate is adapted by the Model Life Table, West, Level 21. For the age groups of less than 5 years of age, when the record of vital events can be obtained, the fractions are calculated from the community vital statistics. And for the age groups older than 5 years of age, Greville's Method is used. The findings are summarized as follows: 1) The fraction of last year of life in infantile group is 0.3684 for males, 0.3711 for females, and in 1-4 years of age group 1.2164 for males, 1.2274 for females. Both are more than those of Japan and U.S. in 1963. 2) Infant mortality rate is 42.37 for males, 31.77 for females per 1,000 live births. 3) The mortality curves show that a higher rate is observed under 1 year of age. It drops to the lowest point at around 10 years of age and rises again as the age increases. 4) The age estimated half-survival rate is during the age group of 70-74 for both sexes. 5) Life expectancy at the age of 0 shows 65.73 years for males and 69.22 years for females.

• Journal of Oral Medicine and Pain
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• 제43권4호
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• pp.118-124
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• 2018

Purpose: Age estimation is often used in the identification of living persons. Various methods are used for age estimation using teeth, and there are many studies on the methodology. But the study of changes in the social aspects of age estimation with the passage of times is still insufficient. Therefore, the purpose of this study is to analyze the age estimation cases in the social aspects and to investigate the changes of age estimation cases in Jeollabuk-do. Methods: From January 2008 to December 2015, 76 cases of age estimation were collected. The collected data were organized and analyzed. The distribution of patients by age and year, the difference between alleged and registered age, the purpose of age estimation, and regional distribution were examined. In addition, we compared the previous study which analyzed the age estimation cases in Jeollabuk-do from 2000 to 2007. Results: According to the distribution by age, the age distribution was the largest in the 50s and 60s, with 69.8%. The most reason to correct age was related to welfare benefits (38.2%), and most of the people who corrected for welfare benefits were over 50 years old. The age correction for purpose of welfare benefits existed every year during the study period. As the result of comparison with previous study, total number of age estimation cases was decreased very sharply, and distribution by age group was also changed. Conclusions: Changes in age estimation cases were observed when compared to the previous study. A significant decrease in the total number of age estimation cases was observed, but the number of age estimation in the 50s did not decrease. Although the total number of age estimation requests decreases, age estimation in the elderly are likely to persist. Thus, it is necessary to study new age estimation methods suitable for the elderly.

• 한국산학기술학회논문지
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• 제20권8호
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• pp.331-343
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• 2019

본 연구는 Framingham Heart Study의 심장나이 예측 모형을 활용하여 심장나이의 추이를 관찰하여 한국인 심혈관질환 발생 위험을 평가해보고자 하였다. 연구대상은 2005년~2013년 국민건강영양조사 자료를 이용하여 30세~74세 대상자 중 심혈관질환 기왕력이 없고, 모형의 결정요인에 해당하는 자료의 결손이 없는 20,012명을 연구대상으로 하였다. 이들에 대해 Framingham Heart Study 비실험실 자료를 이용하는 심장나이 산정 모형을 적용하여 심장나이를 계산하였으며 성별로 심장나이와 실제나이와의 차이, 연령대별 차이, 10년 이상 초과율, 지역별 차이에 대해 연도별 추이를 관찰하였다. 자료분석은 SAS 9.3으로 수행하였으며 가중치를 적용한 복합표본설계분석을 수행하였다. 연구 결과 심장나이와 실제나이의 평균 차이는 남성은 2005년에 7.8세, 2013년 7.7세, 여성은 2005년 1.2세 2013년 1.2세로 남성이 여성보다 컸고, 연령대가 증가할수록 나이차이가 많아졌으며, 연도별로 뚜렷한 추이 변화는 없었다. 심장나이가 실제 나이보다 10년 이상 초과한 비율은 남성은 2005년에 35.0%, 2013년에 34.8%, 여성은 2005년에 17.7%, 2013년에 18.7%로 남성이 여성보다 거의 두 배 정도 높았으며 연령대가 증가할수록 차이가 많이 났다. 지역별로 차이를 보였으며 남녀 차이가 많았다. 본 연구결과로 볼 때 한국인의 10년 내 심혈관질환 발생 가능성은 상당히 높은 수준이었다. 본 연구에서 사용한 심장나이는 미래의 심혈관질환 발병 위험을 간단하고 편리하게 예측할 수 있는 유용한 종합 지표로 사용될 수 있으며, 이를 한국인 심혈관질환 예방을 위한 경고효과와 계도목적으로 현장에서 공중보건 관리에 활용되기를 제안한다. 한국형 심장나이 예측 모형의 개발을 위한 심층 연구도 필요하다.