• Journal of Korean Medical Science
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• v.33 no.48
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• pp.311.1-311.10
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• 2018

Background: In postmenopausal women, there is rapid bone loss due to estrogen depletion. In women, reproductive factors such as age at menarche, breastfeeding, and parity are considered risk factors of osteoporosis. Many reports suggest that obesity is associated with a reduced risk of osteoporosis. This nationwide, population-based study aims to identify the association between maternal age and osteoporosis risk in postmenopausal women of different obesity classifications. Methods: We assessed data from the Korean National Health and Nutrition Examination Survey 2010-2012. The study included 1,328 postmenopausal women, after excluding women with missing data for reproductive history among 4,546 postmenopausal women in the survey. Multivariate regression was used to identify the association between childbirth age and postmenopausal bone mineral density after adjustments for confounding factors. Results: The prevalence of postmenopausal osteoporosis was 35.24% (n = 468). After dividing the subjects into obese and non-obese groups based on body mass index (BMI) and waist circumference, there were significant differences between non-osteoporosis and osteoporosis groups with regard to age at first childbirth, age at last childbirth, and parity in the BMI-based general obesity group. The prevalence of osteoporosis was highest in women older than 35 years old at last childbirth. The prevalence of osteoporosis was also greater in women with parity ${\geq}4$ compared to those with lower parity levels. Conclusion: Postmenopausal women of older age at last childbirth and higher parity were at increased risk of osteoporosis in the BMI-based non-general obesity group.

• Korea journal of population studies
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• v.25 no.2
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• pp.5-40
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• 2002

Using detailed data of women's work history, this study analyses the transition process between employment and non-employment over the life history in order to identity individual and structural determinants in the processes. Korean women comprise very heterogeneous groups in terms of work continuity: one group having a continuous work history and another having an interrupted work experience. While 4.0% of total women have stayed in the labor market since leaving school, 17.3% have not worked outside at all and remaining 87.9% have experienced into and out of the labor market at least once. On the average, the cumulated time of employment per woman is 8.2 years and the cumulated time of unemployment is 13.1 years. Thus Korean women work a total of only 38.5% of their whole lifetime after leaving school. We can conclude that the increase of the employment rate of married women in Korea since the 1970s has been due to the increase of the new entrants with short or little working careers into the labor market, not to the increase of women's work continuity on the whole. A women's educational achievement does not seem to be positively related to employment duration, contrary to the suggestion of the human capital theory, Rather, family variables, especially the existence of the child under 6 yens old, is a more significant determining factor for an individual's exit from employment. And there is little difference among different age cohorts which implies little improvement in the employment continuity of younger women. This study also documents the importance of structural variables, such as the type of occupation, as significant determining factors for the hazard rate. Specially women with professional jobs tend to stay longer in the labor market. Therefore, women's entry into more professional occupations is expected to contribute to the continuity of employment. Our results also show that duration-dependence is not spurious. When unobserved heterogeneity is controlled, the negative relation between the rate from employment and the duration of employment does not disappear.

• Journal for History of Mathematics
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• v.18 no.3
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• pp.67-78
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• 2005

In this paper we deals with Leibniz's definition of infinite and infinitely small quantities, infinite quantities and theory of quantified indivisibles in comparison with Galileo's concept of indivisibles. Leibniz developed 'method of indivisible' in order to introduce the integrability of continuous functions. also we deals with this demonstration, with Leibniz's rules of arithmetic of infinitely small and infinite quantities.

• Journal of the Korean Society of Costume
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• v.50 no.6
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• pp.89-107
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• 2000

Underwear has undertaken the auxiliary role of outwear also. Thus, as outwear has changed forming the characteristic mode in every period, underwear has changed endlessly, so that it may match the form and function of outwear, in accordance with the stream of period. In this study, this researcher examined hoop and petticoat which were used for widening the skirt which is female clothes with diverse names in every period. under one name which is farthingale, centering around the West and korea, from 16th century to 20th century(the first term). In addition, it examined by comparison the relevancy between to the history and change factor of underwear which was used for swelling the skirt in Korean clothes. The result to have studied on the history and change factor about the farthingale of West and Korea is as follows: This study found that the silhouette of women's clothing has a strong relationship with underwear. Also The result to compare the underskirt of the West with that of Korea is as follows : They has other character, but in 18th century, being compared the underskirt of the West with that of Korea, for the swelling of skirt, this study found that they had something in common with the underskirt of the West and Korea.

• Journal of the Korean Society of Food Culture
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• v.30 no.6
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• pp.825-833
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• 2015

This study was conducted to investigate the effectiveness of a nutrition and exercise education program on weight control and nutrition knowledge. The nutrition-exercise educational period was 12 weeks. The subjects were 160 adult women with an average age of 48.1 years. We investigated general characteristics, diet history, eating habits, and intake frequencies of six food groups by survey. A total of 94 women among the subjects participated in the pre and post nutrition knowledge evaluations and anthropometric data assessment. After the program, body weight, body mass index (BMI), and waist circumference significantly decreased. Further, % of body fat decreased, but not significantly. BMI significantly decreased (p<0.001) from 25.14 to $24.80kg/m^2$, and waist circumference significantly decreased (p<0.001) from 79.72 to 77.63 cm. The nutrition knowledge scores of subjects significantly increased (p<0.001) from 8.01 to 9.03. However, there was little change in employment. These results suggest that the nutrition-exercise education program may improve obesity index and nutrition knowledge. However, it is necessary to develop a specialized weight control program for workers.

• Journal of Sasang Constitutional Medicine
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• v.28 no.4
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• pp.330-337
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• 2016

Objectives The purpose of this study was to investigate whether the menstrual pain affect the Sasang constitutions questionnaire response in adult women. Methods Using a structured menstrual history questionnaire, we evaluated the degree of menstrual pain of 550 adult women who participated in this clinical trial. Based on the survey we classified them into menstrual pain group and control group. They filled out SSCQ-P (Sasang Constitution Questionnaire for Patients) and we had compared the difference in response by Sasang constitutions. From 329 women in menstrual pain group and 212 women in control group, 541 questionnaire was analyzed statistically by their constitutions. Results 7 questions in Soyangin, 11 questions in Taeeumin and 20 questions in Soeumin were statistically significant in response between menstrual pain group and control group. Conclusions Soyangin's menstrual pain shows less influence on SSCQ-P than Taeeumin and Soeumin. Taeeumin who has Taeyangin's appearances and characteristics has more menstrual pain. In Soeumin, menstrual pain may result in negative and less expressive characteristics.

• Journal of Korean society of Dental Hygiene
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• v.24 no.4
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• pp.333-341
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• 2024

Objectives: This study aimed to identify the key components and tools for Comprehensive Dental Hygiene Care (CDHC) among dental hygienists and provide foundational data for widespread implementation in dental institutions. Methods: A third Delphi survey involving experts derived the CDHC components and materials. Dental hygienists' characteristics and the CDHC application status were analyzed for frequency. The perceived need for and willingness to apply the CDHC components based on general characteristics were assessed using t-tests. Results: The results of the Delphi survey identified the following CDHC components: 11 for medical history; three, dental history; five, oral hygiene practices; seven, dental conditions; three, occlusion conditions; six, periodontal conditions; and, three, other examinations. Planning included 3 items for healthy gums and 4 for gingivitis and mild periodontitis. Evaluation included 7 items for mild periodontitis, 5 for patient education, and totally 27 CDHC-related materials. Dental hygienists' needs and willingness varied, with higher levels among those in clinics, university graduates, those in counseling or managerial roles, team leaders or those at higher positions, and those with >6 years of experience (p<0.05). Conclusions: The Delphi survey identified the CDHC clinical application process, confirming the strong desire of dental hygienists to apply it in practice.

• International Journal of Costume and Fashion
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• v.13 no.2
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• pp.65-77
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• 2013

The purposes of this study were to document the fashions adopted by young women in the United States in the 1980s and to explore if and how the dynamic shifts toward postmodernist values influenced those fashion trends. Fifteen U.S. women who were college students in the 1980s were interviewed for the study. In analysis of the data, we focused on social changes during the 1980s and the cultural impact of postmodernism vs. modernism as influential factors. Both postmodern and feminist ideas challenged the mainstream cultural framework of capitalism. U.S. women's styles and behaviors concerning dress reflected characteristics of postmodern consumption patterns, which include nostalgia, ethnic dress, androgyny, eclectic and novel clothing combinations, surprising or humorous appearance, and nonconformity. Despite the critique of conformity and conservatism in dress that had emerged in the 1960s and remained in at least minority or subversive trends, the importance of brand names and designer labels increased in mainstream fashion. This study helps us better understand the dynamics of fashion as it reflects societal and value changes in a transitional time in history.

• Journal of the Korean Society of Costume
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• v.67 no.3
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• pp.66-80
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• 2017

The headdress is one of the most important clothing characters in China, as it was used to distinguish the 55 minority groups in China. Each minority group has a unique headdress culture. Among the 55 minority groups, the Zang, the Yi, and the Miao focus their ethnic costumes on the headdress, and have a more distinctive headdress culture compared to be other nationality groups. The Yi is one of the minority groups that linvd in Southwest China. They usually lived in compact communities in Sichuan, Yunnan, and Guizhou provinces, as well as the Guangxi Zhuang Autonomous region. The total population of the Yi is the sixth largest among the 55 minority groups. Modern scholars believe that the Yi people are descendants of the ancient Qiang people, which is a group that lived in Northwest China six or seven thousand years before. It is believed that the Qiang went down to the southern part of China and allied with the aboriginals in that region, and this group of people became the Yi, Due to its long history, cultural background, and the large number of people and settlements, they have produced a unique costume culture. The women's headdress culture is considered to be the one of the most important characteristics of their costume culture. There are four forming element of the Yi women's headdress, religious faith, myths, geographical distribution and customs & festivals. The first three elements play an important role in the protection and spread of headdress, while the fourth element provides potential for the modern headdress development. Because of much influence factors, more than 100 types of Yi women headdresses have developed. Depends on categories, Yi woman headdress can be divided into kerchief, hat, fascinator and other accessories wore on the hand. This study investigated the development of the Yi women's headwear, and screened and analyzed representative Yi women accessories, such as the headscarf, hat, and fascinator. This analysis will provide basic materials for further studies of Yi women's headdress or costume.

• Journal of the Korean Society of Costume
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• v.60 no.4
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• pp.30-44
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• 2010

The definition of pregnancy has changed as society and its values have developed through different periods of history. In the ancient period, the definition of a woman's fertility was that female deities provided fecundity to barren women and barren land, and protected both the pregnant women during the period of gestation and also the land during the time of growth. These goddesses also administered the appropriate ceremonial rituals for conception and childbirth, and for planting and harvesting. After that, for the last 2,000 years, the most conspicuous icon has been "The Virgin Mary with the Infant Christ". Mary was the mother of Jesus Christ and model for Christian women. However, the centuries the image of woman and pregnancy has been changed, modern society through education, careers and job opportunities allows many women to be more than just a wife or a mother. Moreover, in the 21st century, many pregnant women want stylish maternity wear because they are proud and their minds are opened by these new icons of birth culture as like the pregnancy of many famous stars. From this the purposes of this study are as follows, Firstly, to study on the meaning of woman's fertility from ancient period to present time by social changes. Secondly, to investigate the historical concept of the maternity wear for current modern maternity fashion market. Finally, to expect to use this study would be helpful basic data for develop of the new researches of the maternity fashion in the future.