• Journal of Ecology and Environment
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• v.44 no.3
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• pp.143-154
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• 2020

Background: Korean wild boars (Sus scrofa coreanus Heude), because of their adaptability, are a widespread large mammal; however, they sometimes cause problems by invading farms and eating the crops, creating insufficiencies of some foods in South Korea. To understand the diet composition of Korean wild boars according to sex and body size, we collected their feces from Mt. Jeombongsan, Seoraksan National Park, South Korea. The sizes of fecal samples were measured, and genomic DNA was extracted from the samples. We amplified specific loci targeting plants (rbcL and trnL) and animals (COI) to detect the food sources of this omnivore and amplified the ZF and SRY regions to determine the sex. Results: In the wild boar feces, Rosaceae and Bryophyte were the most frequently detected plant food sources at the family level and Diptera and Haplotaxida were the most frequently detected animal food sources at the order level. As a result of sex determination, the sex ratio of wild boars collected in the Mt. Jeombongsan area was approximately 1:1. Our result suggested that there is no significant difference between the diet composition of male and female boars. Based on the average cross-sectional area of the feces, the top 25% were classified into the large body size group and the bottom 25% were classified into the small body size group. The large body size group mainly preferred Actinidiaceae, and the small body size group most frequently consumed Fagaceae. The diet of the large body size group was more diverse than the small body size group. Conclusions: Our results showed that the wild boars preferred Rosaceae, especially Sanguisorba and Filipendula, as plant food sources, and Diptera and Coleoptera of Insecta as animal food sources. Based on the results, the dietary preferences of wild boar appear to be distinguished by not their sex but their body size. Our study could help to elucidate the feeding ecology and population structure of wild boar, as well as address conservation and management issues.

• Journal of Korean Public Health Nursing
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• v.12 no.2
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• pp.149-171
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• 1998

This study attempted to find out a way which is to establish a desirable value and social culture related to sexuality. This study examined student's value and preference about sex and at the same time resolving method to correct ill-rooted value of male preference in our social culture. This study subjects consisted of 409 male and female students of a college located in Incheon area. The study data collected from June 5th to June 11th. 1998. Survey technique was chosen to collect data and analized by SPSS/PC+, SAS program using statistical methods of frequency. percent. $X^ 2-test$ and t-test. The study results are as follows ; 1) Sex satisfaction score of male students was higher than female students and the difference was significant statistically (p<0.0001). 2) There was a difference between male and female student's thought that our socity's structure has a sex discrimination. But female students felt strongly unequality of sex in our socity. 3) $65.4\%$ of total students have a general knowledge about sex and female student's score was higher than male students. The high percent of students get into know sex through mass media $(32.6\%)$ and peer groups $(31.9\%)$. 4) Student's attitude to sex was different from male and female students. Male students have more liberal attitude about sex than female students. 5) $97.1\%$ of the total students believe that our socity has son preference. 6) $86.5\%$ of the total students thought that sex ratio disproportion resulted from male preference is worriable problems in our socity. But there was no significant difference between both sexes.

• Korean Parent-Child Health Journal
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• v.2
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• pp.53-63
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• 1999

The purpose of this study is to describe how what influence sexuality has on women's health. Sex is determined by the sex chromosome: but sociocultural norms have much influence on the sex role of a woman or man. Women's sexuality has had a negative impact on them in a male-dominated society, which destroyed women's health, put women in a powerless position and forced them to live as dependent persons. Sociocultural perception of the sex role has not been very open, and very strict rules have controlled those perceptions; but currently these perceptions have been changing dramatically. Especially, women's sex role has changed, bringing about many problems: the number of women engaging in premarital sex, the number of unwed mothers, the number of pregnancies without marriage, the divorce rate, and the number of dysfunctional families have all increased. Those kinds of problems have negative effects on women, children and members of the whole family. Sexually transmitted disease because of free sex is a serious health issue for women: the number of women with AIDS has increased rapidly. Another big issue is sexual abuse, which is insulting to women, decreases women's self-esteem, increases depression, puts women in a powerless position and eventually causes women to get sick. Male-preference (among newborns) ideology raises health issues for women, such as artificial abortion. In the area of sex differentiation, therefore, we have to change people's thinking from male-preference ideology to equal sex preference. Finally, we have to use a holistic approach for women's health and increase awareness of the fact that the sex role and women's health are very important for the family, society and nation. Women's health is the nation's power.

• Development and Reproduction
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• v.10 no.2
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• pp.79-84
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• 2006

We reviewed sex-change patterns in the wrasses Halichoeres poecilopterus, H. tenuispinis, Pteragogus flagellifer, and Pseudolabrus sieboldi inhabiting the coastal waters of Jeju, Korea, based on the sex distribution according to standard length and sex characteristics of the gonads. Halichoeres poecilopterus, H. tenuispinis, Pt. flagellifer, and Ps. sieboldi are protogynous hermaphroditic fish. Histological observations revealed that these wrasses are undelimited type 2 species because testicular tissue(spermatogenesis area) appears in most parts of the gonads during ovary of degenerative stage. Both initial- and terminal-phase males were present in the investigated populations, indicating that Halichoeres poecilopterus, H. tenuispinis, and Ps. sieboldi are of the diandric type. In contrast, Pt. flagellifer is considered a monandric type, because all males in the investigated populations were terminal-phase males produced via sex change from functional females.

• Journal of Korean Academy of Nursing
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• v.34 no.8
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• pp.1477-1482
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• 2004

Purpose. With the continuous spread of the AIDS virus and other sexually transmitted diseases (STDs) throughout Asia, it has become imperative for HIV/AIDS prevention outreach programs to stress the need for using prophylactics as one form of protection. This is particularly true for commercial sex workers. This pilot study was conducted to investigate the rate of condom use among the commercial sex workers in Korea and reasons why they frequently do not wear condoms during sexual intercourse. Methods. Fifty female commercial sex workers who worked in the Yong San area were recruited while outreach was performed and forty eight responses were analyzed due to two incomplete questionnaires. The data were collected on June 28, 2004 as part of an outreach program for condom use promotion. Results. The subjects ranged in age from 21 to 45 years. Nearly half of the subjects ($47.9\%$) did not consistently use condoms. The major reason for not using protection was clients' reluctances for using condoms. When condoms were used, the subjects preferred lubricant-rich and less painful condom during intercourse. Conclusion. Due to the inconsistent use of condoms, it is clear that many commercial sex workers and clients are susceptible to sexually transmitted diseases. Therefore, it is important to not only educate commercial sex workers, but also to educate their pimps and clientele about the importance of condom use. In general, it is recommended that practical strategies and a policy for condom use promotion be developed.

• Research in Community and Public Health Nursing
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• v.9 no.2
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• pp.441-457
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• 1998

The purpose of this study is to provide fundamental information for the development of new sex education image media through the analysis of those tools produced by Planned Parenthood Federation of Korea. Twenty three video tapes related to the sex education were analysed. The data were sampled on the basis of the sex education instructions for primary and secondary schools published by the Seoul Office of Education in 1996 and the list of sex education information composed by the Planned Parenthood Federation of Korea with the following requirements. 1) The education materials are oriented to the middle and high school students as well a juveniles and are being used in public health centers and schools. 2) The education materials are not confined to the single subject such as AIDS or contraception. Because this study is focused on the analysis of image media, an analysis method widely and effectively used in public media study was chosen. The frequency analysis and percentage treatment were done by an SAS program. The results of the study are as follows : 1. An analysis of the material structure type showed that the frequency of the following subjects in 15 video tapes, composed as drama and cartoon, had this decreasing orde : sex behavior, sex relation ships, sex health, human development, personal technique, and society and culture. 2. The eight tapes of explanation and counseling showed a different sequence from that of the drama and cartoon material, primarily treating human development with 5419 seconds (47.9%) of type. The following were also considered in decreasing order: at 2000seconds (17.6%) sex behavior, at 1366 seconds (12.1%) sex health, at 1240 seconds (11.0%) society and culture, at 667 seconds (6.0%) relation ships, and at 611 seconds (5.4%) personal technique. 3. In a thematic analysis those education materials dealing with human development show this frequency sequence: anatomic physiology, reproduction, and adolescence. In relation, ships the sequence is dates, love, marriage and vows, and family. For personal technique, it is expressed as asking for help, and an empnasis on moral values. For sex behavior, they focus on abstinence, the co-responsibility of sex behavior, the sexual response of the human, and sexual nightmares. For the sex health area, the focus is contraception with abortion and reproductive health following that. In society and culture diversity is considered. 4. An analysis of the differences in production and content between 1980s and 1990s was also done. For materials produced in the 1980s the frequency of the subjects follows this order: sex behavior, human development, relation ships, sex health, personal technique, and society and culture with sub subjects such as abstinence, dating, adolescence, anatomic physiology, reproduction, calls for help, and the sexual response of a human being. For materials produced in the 1990s, highest frequency was sex behavior, the same as the 1980s. The rest of the material follows this decreasing order: relationships, human development, sex health, society and culture, and personal technique with sub subjects such as dating, co-resposibility in sex behavior, abstinence, and love frequently considered.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.05a
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• pp.375-376
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• 2000

Sex ratio of a population is a key factor to determine reproductive rate of the population. If the population has skewed sex ratio to the male, the population size may decline gradually at an area which it inhabits, and, furthermore, if a species plays an ecologically important role in its community (e.g., a keystone species in Paine, 1966), its potential reproductive rate will be to form a characterized community because community structure is strongly influenced by the abundance of the ecologically important species (Hughes, 1986). A number of workers (e.g., Bryan et al., 1986 in Nucella lapillus; Spence et al., 1990 in Thais haemastoma) suggested that high frequency and/or late stage of imposex might affect the female mortality and normal reproduction adversely. Consequently, the imposex could affect sex ratio of natural population of some neogastropod including thaisid species. (omitted)

• Journal of the Korean Society of School Health
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• v.3 no.1
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• pp.73-82
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• 1990

Sex does not mean simply the physical behaviors related to man and woman, rather the sexuality needed socializing process toward total personality. It is believed that religion or social norms on sex, limit talking about sex openly. But children have, their own sexual thinking and want to know why and how. This survey was conducted to find out the need in sex education of primary school students and their parents in Seoul area, comparing students'sexual knowledge, attitude, and behavior to their parents', in October 1989. Total 400 students and their parents who are attending two primary school in Seoul, were given the questionnaires, and 395 students' and 310 parents', respectively, were finally analyzed. The following results were obtained. 1. The mean of 11 questions In asking sexual knowledge of students was 6.18, and showed no difference between boys and girls. But the higher grade, the higher score. 2. The positive attitudes on marriage and sex roles were showed, but negative on physical changes with puberty, which was same to the parents' reaction. 3. Moro than three-forths of students wanted to take sex education class, and one-third of them believed that it should be conducted by school nurses. This was accorded with their parents. 4. The sexual knowledge degree and attitudes of parents went proportionately to their higher educational background. Protestants reacted more negatively to the given sexual terms. No significant difference was made among the age groups of them. As stated above. the degree of sexual knowledge and attitudes are movable accordingly to their children's sexual thinking and need. Therefore, it is strongly recommended that sex education In the primary schools should be conducted systematically involving parents, especially mothers. And it is suggested that school nurses undertake their responsibilities as the sex educators.

• Child Health Nursing Research
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• v.16 no.2
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• pp.93-101
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• 2010

Purpose: The purpose of this study was to provide basic data to develop appropriate sexual education program for children in day care centers. Methods: The data were collected from 361 day care center teachers using self-report questionnaire. Results: 1) The mean score of the degree of sexual education for children was high at the score of 4.18 (${\pm}0.43$). 2) In the mean score of 3 sub-areas, 'living' area was at the highest at the point of 4.32 (${\pm}0.31$), 'social' area was 4.28 (${\pm}0.46$), and 'physical' area was 3.94 (${\pm}0.55$). 3) There was significant difference in the degree of sexual education requirement according to subject's major (t=-2.586, p=.010). Conclusion: It is necessary to include all items of sexual education for early-childhood children in day care center.

• International Area Studies Review
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• v.14 no.2
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• pp.275-296
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• 2010

This study aims to identify effective ways to prevent sexually transmitted diseases among sex workers as well as the general public in Korea by examining the case of Thailand, regarded as a model internationally in reducing prevalence rate of sexually transmitted diseases, under the circumstances in which the implementation of the new anti-sex-trade law causes confusion over the existing sexually transmitted disease control program. For the purpose, the study firstly assesses the anti-sex-trade law which has engendered recent debates over the relationship between sex trade and sexually transmitted diseases, and reviews a change of the sexually transmitted disease control system made by the anti-sex-trade law. The Thai case is explored with some special emphasis on relationship between socio-cultural, political and economic factors and sexually transmitted disease control policies. Comparing to the Thai case, the study proposes some suggestions to make the existing sexually transmitted disease control program more effective under the new anti-sex-trade law.