• Journal of the Korean BIBLIA Society for library and Information Science
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• v.34 no.2
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• pp.205-232
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• 2023

This is an exploratory study that examines the publication and use of sex education books for youth and considers their values and applicability to sex education for youth in the future. In-depth interviews were conducted with book editors, sex education experts, and public librarians-those who play important roles in children and young adults' reading of sex education books-and analyzed. According to the research participants, parents and caregivers often rely on sex education books when they find it hard to deliver sex education to their children on their own. Sex education books are also often used by sex education experts in their classes. The research participants said many sex education books that were published in South Korea only focus on 'the body education,' which deals with body changes during puberty. Gender inequality is another subject that needs to be changed. The research participants agreed that a sex education book should not just be a simple medium that delivers fragments of knowledge on sexuality but a broader learning playground where children and young adults can learn independent perspectives on sexuality based on comprehensive views on life. This study suggests a guideline for sexuality education books, which will be useful for library collection development.

• Journal of Society of Preventive Korean Medicine
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• v.27 no.3
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• pp.25-33
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• 2023

Objectives : The purpose of this study is to examine strategies for improving the school doctor of Korean medicine (SDKM) program through an analysis of the sex education case in the medical vulnerable area. Methods : Sex education was conducted by one SDKM in three elementary schools in Wando county. The contents of sex education focused on the characteristics of puberty and the prevention of sexual violence. The survey conducted on sex-related knowledge, desirable perception of sex, and satisfaction with education before and after the sessions. Results : A total of 316 students participated in the education. A survey was conducted with 130 participants, and all 130 responded to the pre-survey. In the post-survey, 113 participants responded. After education, the sexual knowledge score of students increased from 4.04±1.87 points to 5.02±1.79 points, and the average satisfaction score was 4.14±1.05. Conclusions : Sex education for students in the medical vulnerable area is an effective education that increases sex-related knowledge, positively changes sexual perception, and has high satisfaction. To improving SDKM program, development of a standardized education program and administrative support is necessary.

• Advanced Industrial SCIence
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• v.3 no.1
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• pp.37-50
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• 2024

This study explored the link between reproductive health knowledge, attitudes, and self-efficacy in young women from Uganda's Luwero district. A survey was conducted on 82 women in the Luwero region from May to July 2016, and the predictive power of knowledge and attitudes toward self-efficacy was evaluated through multiple linear regression analysis. Results showed positive correlations among these factors, with knowledge and attitude predicting self-efficacy. Specifically, understanding healthy puberty habits and valuing women's roles positively influenced self-efficacy for healthy behaviors. These findings emphasize the need to target these aspects in reproductive health education programs, crucial for addressing adolescent pregnancy and related issues in Uganda's rural areas.

• Development and Reproduction
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• v.28 no.1
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• pp.21-28
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• 2024

Present study aimed to investigate the temporal changes in expression of some reproductive hormones in testis, originally found in hypothalamus and pituitary. Rats were sacrificed on postnatal day 23 (PND23; immature), pubertal (PND53) and PND 81 (young adult). The testicular RNAs were extracted, and semi-quantitative PCRs for gonadotropin-releasing hormone (GnRH), kisspeptin 1 (KiSS1), pituitary adenylate cyclase-activating polypeptide (PACAP), LH subunits and LH receptor were performed. Transcript levels of GnRH and KiSS1 at PND23 were significantly higher than levels of PND53 and PND81 (p<0.001). PACAP mRNA level at PND23 was significantly lower than those of PND53 and PND81 (p<0.001). The mRNA levels of both testis type and pituitary type luteinizing hormone β subunit (tLHβ and pLHβ, respectively) at PND23 were significantly lower than levels of PND53 and PND81 (p<0.001). The mRNA level of glycoprotein hormone common alpha subunit (Cgα) at PND23 was significantly lower than those of PND53 and PND81 (p<0.001). Present study revealed the intratesticular expression of KiSS1 and GnRH showed a very similar trend while the expression of PACAP in the testis showed reversed pattern. The expressions of LHβ subunits (tLHβ and pLHβ) were very low during immature stage then increased significantly during puberty and early adulthood. Our attempt to study the local role(s) of intratesticular factors will be helpful to achieve precise understanding on the testis physiology and pathology.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.13 no.1
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• pp.15-23
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• 2002

Knowledge regarding the resilience factors and risk factors of the childhood trauma on the developental trajectory is in its infancy due to the lack of prospective follow-up studies in the childhood trauma and limited understanding of the complex reciprocal interactions between childhood trauma, develop-ent and various aspects of children's environment. These difficulties in the conceptual framework and research methods in the childhood trauma are partly reflected in the inconsistencies, even controversies, of the results in the childhood trauma researches. Despite these difficulties, common aspects of the risk factors and resilience of the childhood trauma on the development can be identified from the previous studies. The resilience to the negative outcome on the development by childhood trauma includes：sex female before puberty, male after puberty or infancy), high socioeconomic status, no organic problem, easy temperament, no previous experience with early loss or separation, younger age at the trauma, better problem solving capacity, high self-esteem, internal locus of control, high coping skills, ability to identify interpersonal relationships, ability to play, sense of humor, having capable parents, having a warm relaionship with at least one of the parents, high education and participating in the organized religious activities. These commonalities of the results suggest that risk and resilient factors of the childhood trauma are interdependent, each factor has multiplicity in the impacts on the children's development according to the developmental stage of the child, family and children's other environment, trauma and stressor have diverse effects according to their intensity and risk and resilience factors could have synergistic or antagonistic effects to each other. To develop comprehensive understanding on the relationship between childhood trauma and developmental psychopathology, risk and resilience factors and to develop effective and efficient prevention and intervention, research on the effect of the stress on the neurodevelopment, on the individual differences of the response to the trauma including genetic factors and constitution, and on the brain plasticity should be accompanied in the future.

• The Research Journal of the Costume Culture
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• v.3 no.2
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• pp.241-260
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• 1995

The Maori's traditional clothing materials, basic forms of dress, and the pattern and technique of tatoo were examined in the present study in order to deepen the appreciation of the cultural heritage of the Maori. The research method employed was the analysis of written materials. And a fild-trip was also made for the study. The study was limitted to the traditional culture of body adornment of the Maori including the clothing which is preserved and practicing by them at the present day, and the origin and the process of the historical development of those are not included in the scope of the present study. Followings are the results of the study: (1) By far the most widely used fiber for Maori clothing is abtained from what is commonly called New Zealand Flax. The fiber of kiekie(Freycinetia baueriana) and cabbage trees(Cordyline spp.) may also be used. The strong, long-lasting fiber of toi(cordyline indivisa) is used for a prestige warrior's cloak. Flat strips of ti kauka(Cordyline australi) are also used as thatch on rain cloaks. (2) Regardless of technique used, Maori weaving is always worked horizontally from left to right. Traditionally the work was suspended between two upright turuturu or weaving sticks. As the work progressed a second pair of uprights was used to keep the work off the ground. These uprights were moved forward as required. Because the weaver sat on the ground, the working edge was kept at a height that was comfortable to reach. No weaving tools are used, the wefts(aho) being manipulated by the fingers. The two main Maori weaving techniques are whatu aho patahi(single-pair twining) and whatu aho rua(double-pair twining). (3) The Maori wore two basic garments - a waist met and a cloak. The cloth of commoners were of plain manufacture, while those of people of rank were superior, sometimes being decorated with feather or dyed tags and decorated borders. Children ran more-or-less naked until puberty, being dressed only for special events. Some working dress consisted of nothing more than belts with leaves thrust under them. Chiefs and commoners usually went barefoot, using rough sandals on journeys over rough country (4) The adornment of men and women of rank was an important matter of tribal concern as it was in chiefly persons that prestige of the group was centred, The durable items of Maori persons adornment were either worn or carried. Ornaments of various kinds were draped about the neck or suspended from pierced earlobes. Combs decorated the head. Personal decorations not only enhanced the appearance of men and women, but many had protective magical function. The most evident personal ornament was the hei-tiki made of jade or other material. Maori weapons were treasured by their owners. They served on bottle and were also personal regalia. A man of rank was not fully dressed without a weapon in hand. Also weapons were essential to effective oratory. (5) No man or woman of rank went without some tattoo adornment except in extremely rare instances when a person was too sacred to have any blood shed. The untattooed were marked as beeing commoners of no social standing. This indelible mark of rank was begun, with appropriate rite and ritual, at puberty. And tattoo marked the person as being of a marriageable age. Maori tattoo was unlike most traditional tattoo in that its main line were 'engraved' on the face with deep cuts made by miniature bone chisels. The fill-in areas were not tattooed with cuts but with the multiple pricks of small bone 'combs' that only lightly penetrated the skin surface. The instrument of tattoo consisted of small pots of pumice or wood into which was placed a wetted black pigment made from burnt kauri gum, burnt vegetable caterpillars or other sooty materials. A bird bone chisel or comb set at right angles on a short wooden handle was dipped into the gigment, that a rod or stick was used to tap head of this miniature adze, causing penetration of the skin surface. Black pigment lodged under the skin took on a bluish tinge. A full made facial tattoo consisted of major spirals with smaller spirals on each side of the nose and sweeping curved lines radiating out from between the brows over the forehead and from the nose to the chin. The major patterns were cut deep, while the secondary koru patterns were lightly pricked into the skin.

• Clinical and Experimental Pediatrics
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• v.52 no.12
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• pp.1370-1376
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• 2009

Purpose:Treatment of precocity with gonadotropin releasing hormone analogue (GnRHa) might theoretically exert a detrimental effect on the bone mass during pubertal development. We investigated the short-term changes in bone mineral density (BMD) during GnRHa treatment and the enhancement in the changes with the co-administration of GnRHa and human growth hormone (hGH). Methods:Forty girls with precocious or early puberty who were using GnRHa for more than 1 year were enrolled. Of them, 14 concurrently received hGH. Lumbar bone mineral density was measured before and after the treatment, and bone mineral density-standard deviation scores (BMD-SDSs) were compared according to chronologic age (CA) and bone age (BA), as well as according to the administration of GnRHa alone (Group I) or the co-administration of hGH and GnRHa (Group II). Results:BMDs before and after treatment were in the normal range according to CA but were significantly lower according to BA (P<0.05). During treatment, BMD-SDSs did not change according to CA but significantly increased according to BA (P<0.05). BMD-SDSs in group I did not change during treatment according to CA or BA, while those in group II increased significantly according to BA (P<0.05), but not according to CA. Conclusion:Lumbar BMD was adequate according to CA at initial manifestation of precocity but was lower if compared to BA, that is, BMD did not increase with BA. Because co-treatment with hGH significantly increased BMD-SDSs according to BA, hGH co-treatment could be considered during GnRHa therapy.

• Korean Journal of Poultry Science
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• v.33 no.3
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• pp.181-188
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• 2006

Changes in the fine structure of testicular Leydig cell from hatching to adulthood were studied in Korean native chickens of 1, 2, 4, 6, 8, 10, 12, 14, 16, 18, 21, 24, 28, 32, 44, 52 and 64 weeks (n=13 chickens per group) of age. The objective of this study were to elucidate Leydig cell ultrastructure during testicular development. Testes of chickens were fixed by whole body perfusion using a fixative containing 2.5% glutaraldehyde in cacodylate buffer, processed and embedded in Epon-araldite. Using $1{\mu}m$ sections stained with methylene blue-azure II, qualitative and quantitative(stereological) morphological studies were performed. The ultrastructural changes of the Leydig cell were investigated by ultrathin section with the transmission electron microscope. The stages of the Leydig cell development described focus on mitochondria, endoplasmic reticulum, and lipid droplets which are involved in androgens as fullows. 1) Approaching puberty. The closely packed Leydig cells and sparse intercellular space. The nucleus occupied a large portion of the Leydig cell volume. The population of Leydig cells contained two types of cells that differed in the appearance of their nuclei which were either highly electron-opaque or relatively electron-lucid. The cytoplasm was characterized by large amounts of lipid droplets, relatively few spherical mitochondria, and sparse smooth endoplasmic reticulum. 2) Puberty to adult. The Leydig cells which display features compatible with significant androgen synthesis: large volume of cytoplasm containing extended smooth endoplasmic reticulum, abundant mitochondria, and reduction of lipid droplets.

• Development and Reproduction
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• v.12 no.1
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• pp.97-105
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• 2008

Vinclozolin (VCZ) is a systemic fungicide commonly used in fruits, vegetables and the wine industry. VCZ and its metabolites, butenoic acid (M1) and enanilide (M2) derivatives, act as anti-androgens through actions on the androgen receptor. Although there is growing body of evidence that VCZ's action as an endocrine disrupting chemical (EDC) in male reproductive physiology and pathphysiology, no evidence on the VCZ's EDC action in female is available yet. Previously we found that the prepubertal VCZ exposures could effectively delay the onset of puberty in female rats, suggesting the postponed or weakened activities of hypothalamus-pituitary-ovary (H-P-O) reproductive hormonal axis. The present study was performed to examine whether the VCZ administration affects the transcriptional activities of reproductive hormone-related genes in the same animal model. VCZ (10 mg/kg/day) was administered daily from postnatal day 21 (PND 21) through the day when the first vaginal opening (V.O.) was observed. To determine the transcriptional changes of reproductive hormone-related genes in hypothalamus and pituitary, total RNAs were extracted and applied to the semiquantitative reverse transcription polymerase chain reaction (RT-PCR). As a result, treatment with VCZ significantly lowered the transcriptional activity of nitric oxide synthase-2 (NOS-2) which is known to adjust gonadotropin-releasing hormone (GnRH) secretion in the hypothalamus (p<0.01). Similarly, the mRNA levels of KiSS-1, G protein-coupled receptor 54 (GPR54) and GnRH were significantly decreased in hypothalamus (p<0.01) from VCZ-treated group. As expected, the transcriptional activities of luteinizing hormone-${\beta}$ (LH-${\beta}$) and follicle stimulating hormone-${\beta}$ (FSH-${\beta}$) in the anterior pituitary from VCZ-treated group were also significantly lower than those from the control group. The present study indicates that(i) the inhibitory effect of VCZ exposure on the onset of puberty in immature female rats could be derived from the reduced transcriptional activities of gonadotropin subunits and their upstream modulators such as GnRH and KiSS-1 in hypothalamus-pituitary neuroendocrine axis, and (ii) these inhibitory effects could be mediated by NO signaling pathway.

• Journal of Korean Public Health Nursing
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• v.12 no.2
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• pp.27-47
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• 1998

The Purpose of this study is to offer basic data when the new printed media for sex education are developed, by grasping the problem through analyzing the data of the printed media for sex education that are produced by the government and composed of relatively inclusive contents. The subjects of analyzed data were 10 printed media books connected with sex education. This study focused on analysis for the printed media. therefore the method of analysis used effectively for the study of the mass media was used. The SAS program was used for analyzing the frequency of data and processing with percentage. The result of this study is as follows. 1. The subject of sex education that the printed media intend for was classfied the data for students and for teachers and the general. 2. According to the result of analyzing the writers of the printed media for sex education, classified by occupation, research workers accounted for $30.2\%$ as 23 persons, and the rest were distributed as 19 professors $(25\%)$, 13 teachers $(17.2\%)$, 10 workers in related institutions of various kinds $(13.1\%)$, 6 doctors $(10.6\%)$ and 3 writers $(3.9\%)$. Examing the organization of writers of the printed media for sex education for students, it was composed of sequence as research workers $30.5\%$. workers in related institutions of various kinds $19.6\%$, teachers $19.5\%$, professors $13\%$, doctors $10.8\%$ and writers $6.5\%$. And that of writers of the printed media for sex education for teachers and the general was shown as professors $43.2\%$ (13 persons), research workers $30.1\%$ (9 persons), teachers $13.2\%$ (4 persons) and doctors $10.2\%$ (3 persons). 3. Seeing the result of analyzing for the printed media, classified by themes, it was shown as 314.1 pages $(28.5\%)$ in a field of development of men, 195.9 pages $(17.6\%)$ in a field of sex-health, 141.7 pages $(12.9\%)$ in a field of relationship. 74.1 pages $(6.7\%)$ in a field of a sex act. 51.7 pages $(4.6\%)$ in a field of a personnal technology and 313.4 pages $(28.4\%)$ in the others. As are suit of the analysis classified by themes about the printed media for sex education for students, it was distributed as the content about sexual abuse $12.3\%$ (60.2 pages), the anatomical physiology of reproduction $12.1\%$ (59.3 pages). a friendship $8.5\%$ (41.6 pages). the reproduction $7.2\%$ (35.5 pages). a sexual disease $6.8\%$ (33.2 pages) and the puberty $4.3\%$ (20.9 pages). Examing the result of the analysis about contents classified by themes of the printed media for sex education for teachers and the general. it was indicated as 67.1 pages $(10.9\%)$ on the 'puberty', 37.9 pages $(6.2\%)$ on the anatomical physiology of reproduction, 36.6 pages ($6.0\%$ on a sexual disease, 23.2 pages $(3.8\%)$ on dating, 21.7 pages $(3.5\%)$ on a human sexual reaction. 21.0 pages $(3.4\%)$ on a sexual role. 20.1 pages $(3.3\%)$ of the reproduction. The suggestion according to the upper result is as follows. 1. It is needed to expand the range of analysis into the data. besides the printed media. into the data for sex education using such media as a video. a slide, a CD-ROM, on internet, etc. 2. It is necessary to develop the ideal program for sex education of teenagers and analyze the effect. on the basis of analyzing data about data sex education. 3. It is needed that practice workers for nursing or teachers for nursing as well as workers in educational field or medical experts participate in producing data for sex education.