• 제목/요약/키워드: Sexual differences

검색결과 443건 처리시간 0.022초

Gametogenic Cycle and the Number of Spawning Seasons by Quantitative Statistical Analysis, and the Size at 50% of Group Sexual Maturity in Atrina (Servatrina) pectinata (Bivalvia: Pinnidae) in Western Korea

  • Chung, Jae Seung;Chung, Ee-Yung;Lee, Chang-Hoon
    • 한국패류학회지
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    • 제28권4호
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    • pp.363-375
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    • 2012
  • The gametogenic cycle, the number of spawning seasons per year and first sexual maturiity of the pen shell, Atrina (Servatrina) pectinata, were investigated by quantitative statistical analysis using an Image Analyzer System. Compared two previous results (the spawning periods in the reproductive cycles in 1998 and 2006) by qualitative histological analysis with the present results by quantitative statistical analysis, there are some differences in the spawning periods: the spawning period (June to September) by quantitative statistical analysis was one month longer than those of two previous reports (June to July or June to August) by qualitative histological analysis. However, the number of spawning seasons studied by the qualitative and quatitative analyses occurred once per year. In quantitative statistical analysis using an image analyzer system, the patterns of monthly changes in the percent (%) of the areas occupied by follicles to the ovary area in females (or that of the areas occupied by spermatogenic stages to the testis area in males) showed a maximum in May, and then sharply droped from June to September, 2006. From these data, it is apparent that the spawning season of A. (S.) pectinata occurred once a year from June to September, indicating a unimodal gametogenic cycle during the year. Shell heights of sexually mature pen shells (size at 50% of group sexual maturity, $GM_{50}$) that were fitted to an exponential equation were 15.81 cm in females and 15.72 cm in males (considered to be one year old).

묵납자루, Acheilognathus signifer (Cyprinidae: Acheilognathinae)의 성적 이형과 이차 성징 (Sexual Dimorphism and Secondary Sexual Characters of Acheilognathus signifer (Cyprinidae: Acheilognathinae))

  • 백현민;송호복
    • 한국어류학회지
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    • 제18권2호
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    • pp.141-147
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    • 2006
  • A. signifer의 성숙한 암수는 외형적으로 형태와 체색이 다르며, Hubbus and Laglar(1964)의 방법에 따라 계측한 11개의 형질 중에서 체장에 대한 두장 및 체고의 백분비, 두장에 대한 문장 및 양안간격의 백분비에서 암수 간에 유의한 차이가 있었다. 혼인색은 전체적으로 녹색계열의 색이 가장 폭넓게 분포하며 몸통부분은 녹색과 푸른색계열, 배 부위에는 노란색계열이 대부분이었고, 미병부는 붉은색계열과 노란색계열이 분포하였다. A. signifer의 추성은 입의 바로 위 양쪽으로 각질 위에 밀집되어 형성되어 있었다. 한쪽에 25~30개 정도의 추성이 있었고, 비산란기인 9월에 추성은 대부분 사라지고 양 끝부분에 일부만이 흔적으로 남아 있었다.

낙지 (Octopus minor)의 성 성숙과 성장 특성 (Sexual Maturity and Growth Characteristics of Octopus minor)

  • 김동수;김재만
    • 한국수산과학회지
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    • 제39권5호
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    • pp.410-418
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    • 2006
  • Sexual maturity and growth characteristics of Octopus minor were investigated in 796 individuals from mud flats in Goorori, Muan-Goon, Korea. Gonadosomatic index (GSI) peaked between June and July in females and between November and January in males. The discrepancy in the index peaks between females and males might result from the earlier sexual maturation of males. The sex ratio was biased toward females (68%) in April and toward males (78%) in September, although the differences were not significant (p>0.05). In females, about 50% of individuals with a mantle length of 70.6 mm were sexually mature versus 100% of individuals with mantle lengths over 80 mm. In females, fecundity was also related to size, ranging from 44 eggs in individuals with a mantle length of 54 mm to 179 eggs in the female with a mantle length of 100.5 mm. The relationship between mantle length (ML) an body weight (BW) was BW=0.008 ML$^{2.2797}$ (n=389, r$^2$=0.83, p<0.01) in males and BW=0.029 ML$^{2.2797}$ (n=407, r$^2$=0.74, p<0.01) in females. Analysis of co-variation showed that the difference in the slopes of the two regression lines was significant (p<0.01). Analysis of mantle length-frequency for each month revealed 1 to 3 normal distribution modes. The growth parameters obtained by fitting the modal progression to the seasonalized von Bertalanffy growth function (VBGF) were ML$\infty$= 112.38 mm, K=1.9, C=0.90, and WP=0.1. The results indicate that the seasonal growth oscillation of the stock is very strong and winter is the season when growth is the slowest.

에로티시즘 표현 진 의류광고의 선호도 및 제품 구매의도에 대한 유행의사선도자와 추종자 집단간 차이 (Eifferences between Fashion Opinion Leader and Follower in Preferences of Advertisements and Intentions to Buy the Advertised products in sexuality Oriented Fashon Jeans Advertising)

  • 홍희숙
    • 대한가정학회지
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    • 제35권1호
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    • pp.291-306
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    • 1997
  • The purposes of this study were 1) to identify the gender differences in the perception of sexuality in jeans fashion advertising 2) to identify the differences between fashion opinion leaders and followers in the preferences of advertisements and followers in the preferences of advertisements and intentions to buy the advertised jeans in highly and low sexual advertising. The data were collected via a questionnaire from 441 collesge students(female=225, male=216) living in Seoul. Korea, and analyzed by t-test. The results of this study were as follows: First there were significant differences between male and female in the perception of sexuality in jeans fashion advertising. Second to significant differences between fashion opinion leaders and followers in intentions to buy the advertised jeans of highly sexy advertisements were found in the data collected from male. But there were not significant differences between fashion opinion leaders and followers in preferences and intentions to buy the advertised jeans of highly sexy advertisements in female's data. Third there were significant differences between fashion opinion leaders and followers in the preference of low sexy advertisements in female's data. But there were not significant differences between fashion opinion leaders and followers in preferences and intentions to buy the advertised jeans of low sexy advertisements in male's data.

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한국인 성인의 악안면 연조직의 심미적 안모형태 분석에 관한 연구 (A SOFT TISSUE ANALYSIS ON FACIAL ESTHETICS OF KOREAN YOUNG ADULTS)

  • 백승학;양원식
    • 대한치과교정학회지
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    • 제21권1호
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    • pp.131-170
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    • 1991
  • This study was designed to analyze morphological characteristics of Korean young adults, norms and standard deviation of variables, sexual differences, correlationship between each area of face and correlationship between hard tissue and soft tissue. The primary sample consisted of 45 males and 57 females who were early and middle twenties and had acceptable profile, no history of previous orthodontic treatment, absence of remarkably large overjet and overbite, full complement of permanent teeth, Class I skeletal and dental relationships and good vertical facial proportions. Their cephalograms were analyzed morphologically with a computer morphometrics. Then the final sample - 25 males and 38 females - were selected within 1 S.D. of E-line, ANB, P/A facial height ratio, Interincisal angle, L1 to A-Pog, ODI and APDI. The results of the study were as follows: 1 In the form and proportion of facial skeleton there were no significant differences between males and females, but in the size males were larger than females. 2. The dental protrusion patterns had no significant sexual difference and no significant correlationship between protrusion of upper lip and inclination of upper incisor. But mentolabial angle had positively correlated with interincisal angle and negatively with inclination of upper and lower incisor. 3. In the relationship between nose and soft-tissue profile, males were larger than females in nasal length, height and angular measurements. 4. In analysis of soft-tissue profile, males were larger than females in the length and thickness. In the angular measurements and proportion of soft-tissue profile, there were no significant differences between males and females.

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An Exploratory Study on Gender Differences in Marital Preparation Skills of College Students

  • Lee, Sung Hoon
    • International Journal of Human Ecology
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    • 제14권2호
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    • pp.53-68
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    • 2013
  • The purpose of this study was to highlight the importance of 'marital preparation skill' by focusing on more substantial and tangible skills in marriage life, and to conduct an exploratory research to examine the current conditions and gender differences in marital preparation skills of college students. Data were gathered through a self-administered questionnaire in four universities located in Seoul and Gyeong-gi areas in the spring of 2013, and a total of 332 senior students chosen were used for data analysis. Based on the instrument used in Olson & Olson's(2000) PREPARE/ENRICH Program, the present study sought to suggest a measurement tool with the moniker of 'marital preparation skill' that included seven domains: conflict resolution skill, sexual relationship skill, household labor skill, financial management skill, leisure management skill, parenting preparation skill, and parental role skill. Each domain consisted of four items and thus, a total of 28 items were utilized for this study. Descriptive statistics were analyzed in order to examine the degree of marital preparation skills, and t-tests were conducted in order to assess the gender differences in marital preparation skills. The main results of this study are as follows: First, overall the degree of marital preparation skills of male students was higher than that of female students. Particularly, female students were lower than male students in the skills of financial management and conflict resolution. Second, regarding the basic household labor skill related to clothing and housing life, male students showed higher than female students, implying the impact of military life. Third, even though the degree of consciousness about appropriate preparation of parenthood and parental role seemed to be heightened, the actual degree of readiness of college students revealed to be insufficient. Male students had a much higher degree of confidence and sacrifice acceptance about parenthood, and understanding about their parents' child-rearing style than female students, while the mindset of child-rearing participation of male students was lower than that of female students. Findings of this study can be used as basic data for developing more effective and differentiated educational programs of marital preparation skills for men and women.

흰쥐에 있어서 부신척출이 성선, 갑상선 및 혈청성분에 미치는 영향에 관한 연구 (Effects of Adrenalectomy on Sexual Gland, Thyroid Gland and Serum Components in Rats)

  • 신광순
    • 한국가축번식학회지
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    • 제5권1호
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    • pp.43-63
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    • 1981
  • This study aimed to determine the effects of adrenalectomy on the sexual gland, the thyroid gland and the serum components. A total of 192 Wister strain albino rats were evenly divided into 4 sexually equal groups for the comparisons. Each groups was divided into a control and a treatment group by sexuality. Each tissue of the sexual gland and the thyroid gland was microscopically examined, and at the same time body weight and serum components were also examined on the 1st, 7th, 14th, 28th, 42nd, 56th, 70th and 84th day respectively following adrenalectomy. The results obtained were as follows: 1. The body weight was sufficiently retarded in decreasingly after the adrenalectomy as compared to that of control. 2. The histological change of testis started atrophy of spermatogonia and degeneration of spermatocyte. There was a, pp.ared no cell division activity. Spermatozoa in the seminiferous tuble was not noticed but degeneration of interstitial cell was started and spermatozoa in the epididymal duct disa, pp.ared. 3. Degeneration of oocyte and follicular cell was noticed as the histological change of ovary. There was not a, pp.arance of primary follicle and corpus Iuteum but interstitial cell was proliferated. 4. For the effect of adrenalectomy on the histological change of the thyroid gland, the number of small follicle decreased and that of large follicle increased as the time passed following the adrenalectomy. And the follicular epithelial cell became squamous as typical condition of functional decreased. 5. It was shown that in the total contents of serum protein no difference with control occurred with in the 70th day for male and female adrenalectomized, respectively. But the differences in protein contents were significanly decreased on the 70th day. 6. No difference occurred in the total serum lipids on the 7th day, but they decreased significantly on the 42nd day, and (P<0.01) on the 56th, and 70th day. A tendency to decrease was noted as time elapsed following adrenalectomy. 7. Increase and decrease were intercrossed in the serum cholesterol contents between the control and th treatment groups on the 28th day. But the difference significantly decreased on the 42nd, 56th, and 70th day after adrelalectomized. The contents showed tendency to decrease as time elapsed following adrenalectomy. 8. The blood glucose contents rapidly decreased with time. The difference were significant on the 28th and 42nd day, and highly significant on the 56th and 70th day for male adrenalectomized. 9. In case of solium, there was no noticeable sexual distinction. There was slight in creasing or decreasing for the control group. But the treatment group tended continuously to decrease for male and female. 10. It was shown that potassium contents tended to increase on the 28th day for male and female, but the differences were small. 11. As for chlorine, it tended to decrease rapidly on 7th day for male and female adrenalectomized, and the tendency continued.

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Morphometric Characteristics and Fin Dimorphism between Male and Female on the Marine Medaka, Oryzias dancena

  • Im, Jae Hyun;Gil, Hyun Woo;Lee, Tae Ho;Kong, Hee Jeong;Ahn, Cheol Min;Kim, Bong Seok;Kim, Dong Soo;Zhang, Chang Ik;Park, In-Seok
    • 한국발생생물학회지:발생과생식
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    • 제20권4호
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    • pp.331-347
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    • 2016
  • Sexual dimorphism is the most conspicuous difference between the sexes. This study examines possible sexual dimorphism and the relative growth patterns of morphometric characteristics in the marine medaka, Oryzias dancena for their potential to help differentiate between males and females of this species. The von Bertalanffy growth parameters estimated by a non-linear regression method were $L_{\infty}=30.2mm$, K=3.22/year, and ${\tau}_0=-0.05$. All 18 characteristics measured showed a difference between males and females from 70 days after hatching. Each of these characteristics were significantly different between sexes (ANCOVA, P<0.05), and the ratio of standard length between sexes showed that males were larger than females for all five morphometric measurements. Fin length measurements were taken for 21 distances of anal fin and 7 distances of dorsal fin between landmarks. There were all differences for all dorsal fin rays between the males and the females and there is significant difference in 70 days after their hatch when the sexual dimorphism is presented. The significant difference (P<0.05) in fin ray for male and female was more greatly seen as they grow. Male marine medaka showed more rapid growth than females, with longer length, dorsal fins and anal fins. Differences in these characteristics will be useful during experiments when it is necessary to differentiate between sexes of marine medaka.

남녀성차에 대한 라캉의 구조적 정의와 그 문제 (The Critical Discussion about Lacanian Structural Definition of Sexual Difference.)

  • 문장수
    • 철학연구
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    • 제129권
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    • pp.53-82
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    • 2014
  • 본 글은 라캉의 주체 개념 및 이것의 연장인 남녀성차에 대한 구조적 정의에 대한 내용을 분석하고 이러한 정의들에 내포된 문제들을 비판한다. 라캉이 제공하는 남녀성차에 대한 구조적 정의를 분석하고 비판하기 위해서는 우선 그가 이론화하고 개념화한 저 다양한 정신분석학적 용어들, 즉 상상계, 상징계 그리고 실재계의 관계성, 이상적 자아와 자아 이상의 구분, 남근과 기표의 의미, 타자와 욕망, 의식과 무의식, 소외와 분리 등과 같은 기본적인 용어들의 사용법을 분석하는 것이 급선무이다. 이를 위해 필자는 우선 제 2장에서 상상계와 이상적 자아 사이의 관계, 그리고 제 3장에서는 상징계와 자아 이상 사이의 관계를 논구할 것이다. 그렇게 하여 '이상적 자아'와 '자아 이상'의 차이와 유사를 해명할 것이다. 그리고 제 4장에서 타자, 욕망 그리고 무의식적 주체 사이의 연관성을 해명하고, 제 5장에서는 라캉이 말하는 남근과 기표의 의미를 분석할 것이다. 그리고 제 6-7장에서는 상기의 분석들을 토대로 남녀성차에 대한 라캉의 구조적 정의를 본격적으로 분석할 것이다. 그리고 마지막 결론 장에서는 주체 이론 및 남녀성차에 대한 라캉이론의 전체적 의의 및 그 한계를 최종적으로 정리할 것이다. 그런데, 물론 결론의 장에서 성차에 대한 라캉의 구조적 정의를 전체적으로 비판하기 이전에 각 장들의 말미에서 그 장의 핵심적인 관념들을 비판하는 책무를 소홀히 하지 않을 것이다. 필자의 최종 결론은 이것이다. 라캉과 라캉 학파의 성차에 대한 다양한 정의들이 최소한의 객관적인 의미라도 가지려고 한다면, 그것들은 궁극적으로 해부학적 차이에 근거해야만 한다는 것이다.

지적장애인 성폭력 사건 특성과 법원의 판단 (Characteristics and Court's Decisions of Sexual Assault Case against the intellectually disabled)

  • 이미선
    • 한국심리학회지:법
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    • 제11권2호
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    • pp.211-239
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    • 2020
  • 본 연구는 지적장애인 성폭력 사건의 특성과 쟁점에 대한 법관의 판단을 확인하기 위하여 2015년부터 2018년 사이 선고된 하급심 판결문 분석을 실시하였다. 총 716건의 지적장애인 성폭력 사건에 대한 판결은 무죄 6.0%, 자유형 53.5%, 집행유예 36.7%로 나타났다. 절반 이상의 피해자는 반복적으로 피해를 경험했으며 특히 피고인이 친족이거나 아는 사람인 경우 피해가 반복되는 경향이 높았다. 전체 사건 중 절반은 피해 일시를 특정하지 못하였는데 피고인이 아는 사람이거나 피해가 반복된 경우 일시 특정에 더 어려움을 경험하였다. 지적장애인 사건의 쟁점사항은 진술의 신빙성, 사건당시 항거불능 여부 및 피고인이 피해자의 장애 인식 여부로 나타났다. 진술의 신빙성 판단 시 법관이 가장 빈번하게 사용하는 판단 기준은 진술의 일관성, 구체성, 허위 진술동기, 피해자 인지능력, 진술분석 결과 등의 순이었다. 항거불능 판단 기준으로는 피해자의 태도, 피고인의 태도, 성에 대한 지식 및 이해 순이었다. 장애인식 여부의 경우 피고인의 태도, 피해자의 언어 및 의사소통 능력, 관계지속기간, 일상생활능력 순이었다. 피해자의 장애등급과 성별에 따라 유무죄 판결 및 쟁점사항에 차이는 존재하지 않았다. 다만 피해자 연령이 13세 미만인 경우 13세 이상 피해자와 비교하여 진술의 신빙성 판단이 쟁점이 되는 빈도가 더 높은 반면 장애 인식 여부의 빈도는 유의미하게 더 낮은 것으로 나타났다. 마지막으로 본 연구의 결과에 대한 시사점 및 실무에서 활용방안에 대해 논의하였다.

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