• Korea journal of population studies
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• v.31 no.3
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• pp.131-157
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• 2008

The purpose of this study was to examine the difference in depression level of Japanese, Chinese and Vietnamese wives who are residing in Korean society. Special focus was taken to compare the differences in terms of the origin of nationality. Guided by the role theory, we analyzed the effect of parental role and work role on depression of foreign wives. Also we considered the social resources, ethnic characteristic that are well-known to be associated with the role performance, in this study. The data came from the sample of 524 foreign wives case (Japanese 35%, Chinese 31%, Vietnamese 34%). The result show us that depression level is different by origin of nationality of foreign wives: Vietnamese wives were more depressed compare to Japanese or Chinese wives. The effects of two social role on depression were significant even if the social resources and ethnicity are considered in the model. However, the strength of the effect of social roles were different by one another: having a job was especially effective to decrease the Chinese wife's depression level, while for the Vietnamese wives, parental role was essential to lower the depression level. In addition, the social determinants of depression were differ by the nationalities of wives. The results imply that the social adaptation process of foreign wife may be varied by the origin of nationality.

• Asian-Australasian Journal of Animal Sciences
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• v.20 no.11
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• pp.1631-1635
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• 2007

Japanese Brown cattle, one of the four domestic beef breeds in Japan, are suffering from numerical reduction due to economic pressure from profitable breeds. In this study, all the reproductive cows in the Kouchi sub-breed of the Japanese Brown cattle that were alive in July 2005 were investigated by pedigree analysis to clarify genetic structure and composition of genetic variability. In addition, genetically important individuals for the maintenance of genetic variability of the sub-breed were also identified through the core set method. The number of cows analyzed was 1,349. Their pedigrees were traced back to ancestors born around 1940, and pedigree records of 13,157 animals were used for the analysis. Principal component analysis was performed on the relationship matrix of the cows, and their factor loadings were plotted on a three-dimensional diagram. According to their spatial positions in the diagram, all the cows were subdivided into five genetically distinctive subpopulations of 131 to 437 animals. Genetic diversity of the whole sub-breed, which is estimated to be 0.901, was decomposed into 0.856 and 0.045 of within-subpopulation and between-subpopulation components. Recalculation of genetic diversity after removal of one or several subpopulations from the five subpopulations suggested that three of them were genetically important for the maintenance of genetic variability of the sub-breed. Applying the core set method to all the cows, maximum attainable genetic diversity was estimated to be 0.949, and optimal genetic contributions assigned to each cow supported the previous results indicating relative importance of the three subpopulations as useful genetic materials.

• Journal of Engineering Education Research
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• v.9 no.3
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• pp.78-89
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• 2006

The economic depression during the last decade of the 20th century caused various drastic changes in the social structure, including employment and educational systems. Japanese universities have devoted much effort to research activity and the development of teaching methodology for engineering education was not a major effort for professors. Decrease of 18 years old population, however, forced universities to change this attitude. University education is no more for only elite but is becoming very popular among young people. Another impact came from the 'globalization'of industrial societies such as establishment of WTO and APEC. Japan Accreditation Board for Engineering Education (JABEE) was established to cope with both domestic and international problems in 1999, and JABEE was admitted as a full signatory member of the Washington Accord in 2005. The Professional Engineer Law was amended linked with JABEE. The importance of engineering ethics has been recognized with these social structure changes. Japanese Society for Engineering Education (JSEE) is contributing for reformation of Japanese engineering education through its activities including supporting JABEE. This paper describes the problems now Japanese engineering education is facing and the role of JSEE in order to reorganize the engineering education in Japan.

• Asian-Australasian Journal of Animal Sciences
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• v.8 no.2
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• pp.187-194
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• 1995

Genetic variants of ${\alpha}s_1$-casein, ${\beta}$-casein, ${\kappa}$-casein and ${\beta}$-lactoglobulin were investigated by starch urea gel electrophoresis in milk samples of 280 Korean native cattle. A new ${\beta}$-casein variant, designated ${\beta}$-casein $A^4$, was found in milk samples of Korean native cattle. It has a much slower electrophoretic mobility than the ${\beta}$-casein $A^3$ variant in acid gel. This new variant appeared together with either ${\beta}$-casein $A^1$, $A^2$ or B variant. Gene frequencies and genotypic frequencies were estimated. Gene frequencies of four milk protein loci in Korean native cattle were compared with those of imported cattle breeds raised in Korea and Japanese brown cattle. Gene frequencies were ${\alpha}s_1$-casein B .846, ${\alpha}s_1$-casein C .154; ${\beta}$-casein $A^1$ .216, ${\beta}$-casein $A^2$ .666, ${\beta}$-casein $A^4$ .048, ${\beta}$-casein B .070; ${\kappa}$-casein A .648, ${\kappa}$-casein B .352; ${\beta}$-lactoglobulin A .148, ${\beta}$-lactoglobulin B .852. The population was in Hardy-Weinberg equilibrium at all milk protein loci. Gene frequencies of Korean native cattle were very similar to those of Japanese brown cattle. Interestingly, a new variant, ${\beta}$-casein $A^4$, was found only in Korean native cattle and Japanese brown cattle. These results support the hypothesis that Korean native cattle were used in the development of the Japanese brown cattle.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.9
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• pp.3685-3690
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• 2015

Background: Low-dose oral contraceptives (OC) were approved by the Japanese Ministry of Health, Labor and Welfare in 1999, yet despite their contraceptive and non-contraceptive health benefits, only 5% of the target population use them. Fear of increased cancer risk, particularly breast cancer, is one reason for this. Due to low OC uptake and low screening participation, a paucity of data is available on the risk of OC use and breast cancer in Japanese women. The present study investigated OC use and breast cancer risk, as well as menstrual, reproductive and family factors. Materials and Methods: This was a clinic-based case-control study of women aged 20-69yrs who had undergone breast screening between January 2007 and December 2013 in central Tokyo. In all, 28.8% of the participants had experience with OC use. Cases were 155 women with a pathologically confirmed diagnosis of breast cancer. Controls were the remaining 12,333 women. Results: Increased age was a significant risk factor for breast cancer (p<0.001). A lower risk was found in premenopausal women presently taking OC compared to never users (OR 0.45; 95% CI 0.22-0.90) after adjusting for age, parity and breast feeding, and a family history of breast cancer. Conclusions: Increased age rather than OC use had a greater effect on breast cancer risk. This risk may be decreased in premenopausal women with OC use, but further long-term prospective studies are necessary.

• Asian-Australasian Journal of Animal Sciences
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• v.29 no.12
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• pp.1696-1701
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• 2016

Japanese quail is still used as a model for poultry research because of their usefulness as laying, meat, and laboratory animals. Microsatellite markers are the most widely used molecular markers, due to their relative ease of scoring and high levels of polymorphism. The objective of the research was to determine genetic diversity and population genetic structures of selected Japanese quail lines (high body weight 1 [HBW1], HBW2, low body weight [LBW], and layer [L]) throughout 15th generations and an unselected control (C). A total of 69 individuals from five quail lines were genotyped by fifteen microsatellite markers. When analyzed profiles of the markers the observed ($H_o$) and expected ($H_e$) heterozygosity ranged from 0.04 (GUJ0027) to 0.64 (GUJ0087) and 0.21 (GUJ0027) to 0.84 (GUJ0037), respectively. Also, $H_o$ and $H_e$ were separated from 0.30 (L and LBW) to 0.33 (C and HBW2) and from 0.52 (HBW2) to 0.58 (L and LBW), respectively. The mean polymorphic information content (PIC) ranged from 0.46 (HBW2) to 0.52 (L). Approximately half of the markers were informative ($PIC{\geq}0.50$). Genetic distances were calculated from 0.09 (HBW1 and HBW2) to 0.33 (C and L). Phylogenetic dendrogram showed that the quail lines were clearly defined by the microsatellite markers used here. Bayesian model-based clustering supported the results from the phylogenetic tree. These results reflect that the set of studied markers can be used effectively to capture the magnitude of genetic variability in selected Japanese quail lines. Also, to identify markers and alleles which are specific to the divergence lines, further generations of selection are required.

• The Journal of Korean Medical History
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• v.29 no.1
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• pp.89-101
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• 2016

Hae-Yong Shin was a renowned merchant during the transitional period from Korean Imperialism to Japanese Occupation, and devoted his life during the period of Japanese Occupation as a proponent of patriotic enlightenment movement and translator. He also authored many medical and scientific works; in particular, he integrated the modern Western medicine into the Korean herbal medicine in his writings. His early works include New Edition of Natural History (1907), Physiology published in six series in the YaRoe, a magazine for the patriotic enlightenment movement, and the New Edition of Zoology (1908). These writings are assumed to have deepened Shin's knowledge of and insights into human and animal physiologies and anatomies. In the Danbang-Biyo-Gyeongheom-Shinpyeon (1913), he sought to incorporate the aspects of the Western medicine while mainly adopting the approach of the Korean herbal medicine. While keeping the contents and formations of Donguibogam, he recorded many empirical prescriptions and deleted theories incomprehensible for the general population, shamanic prescriptions, and poisonous and deadly ingredients. Its most salient features are the use of the Korean vernacular script for explications and simple ingredients for prescriptions. As medicinal materials, he presented commonly found low-cost native ingredients easily obtainable and affordable for. In the disciplines of childbirth, childbearing, and first aid, he adopted Western medical treatments. Danbangshinpyeon is particularly significant in that it contributed to public health by spreading practical basic medical knowledge in the vernacular script easily applicable at home in difficult situations for obtaining medical services under the Japanese colonial rule.

• The Journal of the Korean Society for Microbiology
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• v.11 no.1
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• pp.87-91
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• 1976

It has been known that there are more than 50 species of mosquitoes in Korea but little study was done on distribution of summer mosquitoes species in Seoul. The author collected and investigated the species and seasonal distribution of mosquitoes in Seoul from 1967 to 1972. 1) The most abundant species of summer mosquitoe was A. vexans nipponii, $30{\sim}70%$ of total mosquito population. 2) The next abundant species was C. pipiens but there was wide frequencies according to different years. 3) C. tritaeniorhynchus, the vector of Japanese encephalities, was third in order, possesed about 9% of total mosquitoe population every year and reached peak in August and September. 4) It was found that there ware 7 species of mosquitoes commonly in Seoul City.

• Korea journal of population studies
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• v.22 no.2
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• pp.163-195
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• 1999

이 글은 '강력한 남성 부양자'국가로서 90년대 일본사회가 제시한 여성노동력에 대한 사회적 보호정책을 살펴보고 평가하는데 그 목적이 있다. 논의의 초점은 크게 3가지로 구분되는데 어머니로서는 보육정책을, 노동자로서는 노동정책을, 부인으로서는 사회보장 정책에 대한 논의가 그것이다. 보육정책의 경우 급격한 소자녀와 추세에 따라서 94년에 도입된 "엔젤 플랜"의 성격을 소개하였다. 노동정책은 99년 4월 실시된 개정 '노기법', 균등법', 휴업법' 내용을 다루었다. 정책내용에 담겨 있는 성이 여성의 규정방식을 평가하였다. 90년대 이후 지속되는 일본경제의 장기 불황 그리고 전세계적으로 도입되고 있는 신자유주의적 사조는, 90년대 이루어진 여성노동력에 대한 사회적 보호정책 개정의 효과를 반감시키는 요인으로 작용할 수 있다. 즉, 최근 개정된 일련의 여성노동력에 대한 사회적 보호정책의 기조는 '강력한 남성부양자' 국가인 일본사회의 남성 중심성을 수정 보완하기에는 역부족으로 보인다.

• The Korean Journal of Malacology
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• v.3 no.1
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• pp.35-43
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• 1987

Morphological variations of six Korean and one Japanese populations of Parafossarulus manchouricus were observed. Mean length of shell was 9.36mm(n=376), and mean width was 8.0mm. Average aperture length and width were 4.72 and 3.78mm, respectively. Number of whorl ranged from 3.5 to 5.25(at most 4.5)in all popuiations . Yangsoori population had no spiral line or spiral keel, but ther populations had spiral lines. Number of spiral line on their penultimate shorls ranged 4 to 14.The lips of aperture were generally thickened, except in some Chongpyong, Haman and Fukuoka populations. The most of shell was eroded in only apex part and/ or in othker sculpture, especially Yangsoori population was heavily eroded.