• The Korean Journal of Malacology
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• v.32 no.4
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• pp.249-254
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• 2016

The purpose of this study is to estimate genetic parameter and growth traits by sex of Pacific abalone, Haliotis discus hannai. The abalone 10 family produced using 1:1 mating system of male and female for analyses of sex ratio and growth traits (shell length, shell width, and total weight) by sex. Overall mean in phenotypic traits at 30-month-old showed 85.01 mm of shell length, 57.49 mm of shell width and 73.34 g of total weight respectively. The sex ratio (female : male) was 1:0.93 (n = 191:177). The values of growth traits by sex showed significant difference (P < 0.05). The each value of female growth traits were shown to be higher than the values of male growth traits. The heritability of growth traits by sex were estimated that the heritability of female growth traits are higher than male that. The results suggest a possibility of improving the growth of cultured abalone using selection breeding by sex.

• Korean Journal of Plant Resources
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• v.24 no.6
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• pp.702-711
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• 2011

Buckwheat (Fagopyrum esculentum Moench), one of the minor crops grown in Korea belonging to the Polygonaceae family, is an annual crop widely cultivated in Asia, Europe, and America and has a character of outcrossing and self-incompatibility. The objective of this study was to analyze the genetic variability, phylogenetic relationships and population structure of buckwheat landraces of Korea using SSR markers. Ten microsatellite markers have been detected from a total of 79 alleles among the 179 buckwheat accessions were collected from Korea. The number of allele per marker locus ($N_A$) ranged from 2 (GB-FE-001, GB-FE-043 and GB-FE-055) to 31 (GB-FE-035) with an average of 7.9 alleles. GB-FE-035 was the most polymorphic with the highest PIC value 0.93. Major allele frequencies ($M_{AF}$) for the 10 polymorphic loci varied from 0.12 to 0.97 with a mean allele frequency of 0.57. The expected heterozygosity ($H_E$) values ranged from 0.05 to 0.94 with an average of 0.53. The observed heterozygosity ($H_O$) ranged from 0.06 to 0.92 with an average of 0.42. The overall polymorphic information contents (PIC) values ranged from 0.05 to 0.93 with an average of 0.48. The landrace accessions of buckwheat used in the present study were not distinctly grouped according to geographic distribution. The study concludes that the results revealed genetic differentiation was low according to the geographic region because of outcrossing and self-incompatibility. We reported that our analyses on the genetic diversity of common buckwheat cultivars of Korea were performed by using of microsatellite markers.

• The Research Journal of the Costume Culture
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• v.10 no.2
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• pp.160-177
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• 2002

Wedding ceremony is a most basic and significant rite of religion. Clothing fur the ceremony is also assumed religious in essence. Thus this study focuses on ideas and religious qualities implied in wedding dresses for women in the latter period of Chosen. Among those wedding dresses for women in the public class, in this study, Yeom-Eui(염의), Won-Sam(원삼) in green and Hwal-Ot(활옷) are discussed. Yeom-Eui seemed preferred by only some of the nobel class who still considered manners and customs as very important. The rest people often wore a brilliant Hwal-Ot rather than Yeom-Eui under influences of a loosened social position system and sumptuous moods. Since a wedding is the reflection of social condition and at the same time a religious rite, the above mentioned difference in wedding dresses between the class of scholars obsessed with Confucianism and the rest public seems attributable to differences in values and religious views between the two groups. Of course, Hwal-Ot was also transmitted from the Chinese nation of Tang, so it complied with a contemporary flunkeyism about Chinese culture. Won-Sam and Hwal-Ot were designed with patterns representing the very significance of wedding and those wishing worldly blessings more children and more sons, longevity and wealth and prosperity. The fact that wishes of more children and more sons were more often implied by patterns of wedding dress in the latter Chosen indicates the legitimate oldest son-oriented patriarchical family system at that time influenced to such contemporary dresses. Meanwhile, those patterns used for Won-Sam and Hawl-Ot were influenced mainly by Confucianism, but sometimes based on Buddhism and Taoism. It suggests that the Chosun dynasty emphasized Confucian manners and customs to restore previous values which had been about to be collapsed since wars with the Chinese Ching and Japan, but nevertheless in the public class, Buddhism and Taoism were more deeply prevailed. This was supported by patterns and colors shown in wedding clothing.

• The Korean Journal of Malacology
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• v.28 no.1
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• pp.55-64
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• 2012

Ultrastructural studies of germ cell development during spermatogenesis and taxonomic values in mature sperm morphology of Argopecten irradians irradians were investigated by transmission electron microscopic observations. In the early stage of spermatid during spermiogenesis, a few granules and proacrosomal granules are formed by the Golgi complex. In the late stage of spermatid during spermiogenesis, a proacrosomal vesicle becomes an acrosomal vesicle in the acrosome through spermiogenesis. The sperm is approximately $ 45-48{\mu}m$ in length including a jar-shaped sperm nucleus (about $1.45{\mu}m$ long), an acrosome (about $0.34{\mu}m$ long) and tail flagellum. The axoneme of the sperm tail shows a 9+2 structure. As one of common characteristics of mature sperm morphologies in Pectinidae species in subclass Pteriomorphia, mature spermatozoon consists of the cone-shaped acrosomal vesicle and subacrosomal material on the invaginated jar-shaped nucleus. The acrosomal vesicle of this species is composed of electron high dense opaque part (material) from the base to the tip, as have seen in the species in the subclass Pteriomorphia. Exceptionally, five mitochondria are found in the sperm midpiece of this species, unlike four in most species of Pectinidae in subclass Pteriomorphia. However, the acrosomal vesicle of spermatozoa of A. irradians irradians resemble to those of other investigated Pectinidae species in subclass Pteriomorphia. Therefore, we can use sperm morphology as a tool in the resolution of taxonomic relationships within the Pectinidae species. These morphological charateristics of acrosomal vesicle belong to the family Pectinidae in the subclass Pteriomorphia.

• Journal of Convergence for Information Technology
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• v.10 no.3
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• pp.141-150
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• 2020

This study examined the experience of cosmetic surgery and its related factors in order to establish the correct values for female college students' appearance. Data were collected from 283 female college students in Gyeonggi, Chungcheong, and Jeolla-do provinces, and analyzed by Chi-square test, T-test and Binary logistic regression using SPSS 18.0 program. As a result, the experience rate of cosmetic surgery was 66.1%, and the experience of cosmetic surgery was high as the grade was increased. The most common source of information was 'family and people around' at 45.9%, and the cosmetic surgery type 'eye surgery' was the highest at 25.8%. Appearance of interest and cosmetic surgery recognition were higher than those who had no cosmetic surgery experience. Factors related to cosmetic surgery experience were grade, allowance, and appearance interest. It is necessary to prepare basic data on cosmetic information and to develop a program to establish proper beauty values, and education and counseling to make rational decisions about cosmetic surgery will be required.

• Asian Pacific Journal of Cancer Prevention
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• v.17 no.6
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• pp.2841-2846
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• 2016

Background: Tobacco use is the single most important preventable risk factor for cancer. Surveillance of tobacco-related cancers (TRC) is critical for monitoring trends and evaluating tobacco control programmes. We analysed the trends of TRC and evaluated the population-based cancer registry (PBCR) in Delhi for simplicity, comparability, validity, timeliness and representativeness. Materials and Methods: We interviewed key informants, observed registry processes and analysed the PBCR dataset for the period 1988-2009 using the 2009 TRC definition of the International Agency for Research on Cancer. We calculated the percentages of morphologically verified cancers, death certificate-only (DCO) cases, missing values of key variables and the time between cancer diagnosis and registration or publication for the year 2009. Results: The number of new cancer cases increased from 5,854 to 15,244 (160%) during 1988-2009. TRC constituted 58% of all cancers among men and 47% among women in 2009. The age-adjusted incidence rates of TRC per 100,000 population increased from 64.2 to 97.3 among men, and from 66.2 to 69.2 among women during 1988-2009. Data on all cancer cases presenting at all major government and private health facilities are actively collected by the PBCR staff using standard paper-based forms. Data abstraction and coding is conducted manually following ICD-10 classifications. Eighty per cent of cases were morphologically verified and 1% were identified by death certificate only. Less than 1% of key variables had missing values. The median time to registration and publishing was 13 and 32 months, respectively. Conclusions: The burden of TRC in Delhi is high and increasing. The Delhi PBCR is well organized and generates high-quality, representative data. However, data could be published earlier if paper-based data are replaced by electronic data abstraction.

• Journal of Convergence for Information Technology
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• v.9 no.12
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• pp.190-197
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• 2019

The purpose of this study was conducted as a basic data for the formation of a correct job value and to investigate the relationship between lifestyles and their job value in the dental hygiene students. A self-reported questionnaire was completed by 237 dental hygiene students in Seoul city from September 1 to 30, 2018. The data were analyzed by t-test, one way ANOVA, Pearson's correlation. regression analysis. There were lifestyles(3.27), job value(3.77) in subject. The faster birth order, the higher tended to have the internal job value(p<.05). The challenge·adventure, family-oriented lifestyles were were higher in female(p<.05). In order for college students' lifestyles to have a positive meaning on job values, it is necessary to apply job values education, career aptitude tests, and application of individual counseling programs.

• The korean journal of orthodontics
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• v.51 no.6
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• pp.407-418
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• 2021

Objective: To investigate differences in the heritability of skeletodental characteristics between twin pairs with skeletal Class I and Class II malocclusions. Methods: Forty Korean adult twin pairs were divided into Class I (C-I) group (0° ≤ angle between point A, nasion, and point B [ANB]) ≤ 4°; mean age, 40.7 years) and Class II (C-II) group (ANB > 4°; mean age, 43.0 years). Each group comprised 14 monozygotic and 6 dizygotic twin pairs. Thirty-three cephalometric variables were measured using lateral cephalograms and were categorized as the anteroposterior, vertical, dental, mandible, and cranial base characteristics. The ACE model was used to calculate heritability (A > 0.7, high heritability). Thereafter, principal component analysis (PCA) was performed. Results: Twin pairs in C-I group exhibited high heritability values in the facial anteroposterior characteristics, inclination of the maxillary and mandibular incisors, mandibular body length, and cranial base angles. Twin pairs in C-II group showed high heritability values in vertical facial height, ramus height, effective mandibular length, and cranial base length. PCA extracted eight components with 88.3% in the C-I group and seven components with 91.0% cumulative explanation in the C-II group. Conclusions: Differences in the heritability of skeletodental characteristics between twin pairs with skeletal Class I and II malocclusions might provide valuable information for growth prediction and treatment planning.

• Journal of Digital Convergence
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• v.19 no.1
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• pp.217-228
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• 2021

This study was to identify generational difference of values of life and factors influencing turnover of Korean nurses. Total 294 nurses of generation-X, Y, and Z participated. Analysis of variance(ANOVA) and Multiple Regression Analyse was conducted. The result of the study was that Gen-X and Y nurses considered family life as the most important thing in life and Importance of work was the next by Gen-X and leisure time by Gen-Y. However, Gen-Z nurses regarded leisure time as the most important. These findings indicate that influencing factors on turnover of Korean nurses were different by nurses generations. These results indicates that it is necessary to develop different strategies by generations in order to manage turnover issues for Korean nurses.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.55 no.5
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• pp.549-556
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• 2022

The aim of this study was to evaluate the genetic parameters of growth traits for improvement breeding in olive flounder Paralichthys olivaceus at the 8^th generation of selective breeding in April 2021. Growth traits such as total length, body weight and condition factor at 11 months of age were measured for 7,508 individuals with confirmed paternity. Data were analyzed using the restricted maximum likelihood method applied to a multiple traits animal model. The effects of sex and family were significantly different across traits (P<0.05). The heritability values of total length, body weight and condition factor were estimated to be high as 0.479, 0.457, and 0.466, respectively. Correlation analysis between phenotypic and breeding values, indicated that the selection accuracy was 75.9-85.2% for all traits. To increase the selection accuracy for parent fish selection, the sex and pedigree characteristics that affect each trait should be considered. Moreover, further improvement of multiple traits can be achieved if the correlation between each trait is appropriately considered.