• 문화기술의 융합
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• 제6권2호
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• pp.15-23
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• 2020

본 연구는 비정규직 고용률과 여성고용률이 출산율에 미치는 효과를 동태패널모형을 통해 분석하였다. 분석결과, 출산율은 전년도 출산율이 높을수록 상승하는 경향을 확인하였으며, 임시직 고용률이 높을수록 출산율이 하락하는 반면, 여성고용률이 개선되는 것은 출산율을 높이는 영향을 보이는 것으로 분석되었다. 또한, 높은 경제성장률은 개인이 직면하게 되는 소득의 상승으로 이어질 수 있으므로 경제성장률이 높을수록 출산율이 높아질 수 있는 반면, 주택 임대료가 증가하는 것은 출산율을 낮추는 것으로 분석되어 주거비부담과 출산간 경합관계가 성립함을 확인할 수 있었다. 고출산 국가들에 대한 분석에서는 전년도 출산율과 임대료 수준의 영향만 확인할 수 있었던 반면, 저출산 국가에서는 임시직 고용률이나 여성 고용률, 경제성장률이 출산율에 영향이 있는 것으로 분석되어 출산율 수준에 따라 차별적인 영향력을 확인하였다. 이는 우리나라와 같이 저출산 국가는 임시직 고용률을 낮추면서 정규직 비율을 높이고, 여성의 고용률을 높이는 것과 같은 노동정책 개선이 출산율을 개선하는데 도움이 되는 정책적 방향이라는 것을 시사한다.

• Journal of Genetic Medicine
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• 제13권2호
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• pp.95-98
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• 2016

We report the prenatal diagnosis of an unbalanced translocation between chromosome Y and chromosome 15 in a female fetus. Cytogenetic analysis of parental chromosomes revealed that the mother had a normal 46,XX karyotype, whereas the father exhibited a 46,XY,der(15)t(Y;15) karyotype. We performed cytogenetic analysis of the father's family as a result of the father and confirmed the same karyotype in his mother and brother. Fluorescence in situ hybridization and quantitative fluorescent-polymerase chain reaction analysis identified the breakpoint and demonstrated the absence of the SRY gene in female members. Thus, the proband inherited this translocation from the father and grandmother. This makes the prediction of the fetal phenotype possible through assessing the grandmother. Therefore, we suggest that conventional cytogenetic and molecular cytogenetic methods, in combination with family history, provide informative results for prenatal diagnosis and prenatal genetic counseling.

• Animal Bioscience
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• 제34권8호
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• pp.1253-1270
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• 2021

Assessment of male fertility is based on the evaluation of sperm. Semen evaluation measures various sperm quality parameters as fertility indicators. However, semen evaluation has limitations, and it requires the advancement and application of strict quality control methods to interpret the results. This article reviews the recent advances in evaluating various sperm-specific quality characteristics and methodologies, with the help of different assays to assess sperm-fertility status. Sperm evaluation methods that include conventional microscopic methods, computer-assisted sperm analyzers (CASA), and flow cytometric analysis, provide precise information related to sperm morphology and function. Moreover, profiling fertility-related biomarkers in sperm or seminal plasma can be helpful in predicting fertility. Identification of different sperm proteins and diagnosis of DNA damage has positively contributed to the existing pool of knowledge about sperm physiology and molecular anomalies associated with different infertility issues in males. Advances in methods and sperm-specific evaluation has subsequently resulted in a better understanding of sperm biology that has improved the diagnosis and clinical management of male factor infertility. Accurate sperm evaluation is of paramount importance in the application of artificial insemination and assisted reproductive technology. However, no single test can precisely determine fertility; the selection of an appropriate test or a set of tests and parameters is required to accurately determine the fertility of specific animal species. Therefore, a need to further calibrate the CASA and advance the gene expression tests is recommended for faster and field-level applications.

• Asian Journal for Public Opinion Research
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• 제10권3호
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• pp.200-229
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• 2022

The purpose of this study is to analyze the effects of youth job policy measures, set forth in Korea's 2016-2020 Third Basic Plan for Low Fertility and Aging Society (December 2015), on marriage and fertility among young people. Based on the results, we provide theoretical explanations for the findings and suggest policy alternatives to overcome the low fertility phenomenon in Korea. Previous studies have shown that employment is an important factor for marriage among youth, and a job policy could increase marriage and fertility rates. To test this assumption, we performed an exact matching between Statistics Korea's Employee-Enterprise Linkage DB and the Newlyweds DB from 2011 to 2019, in order to identify all young people aged 15-34. Then, linear spline regression analysis was used to examine the impact of the youth job policy on marriage and fertility. Comparing the period before the implementation of the employment policy (2011-2015) and after (2016-2019), the fertility rate increased as the number of young people looking for work increased. In addition, it was found that these impacts were greater after the implementation of the measures (2016-2019) than before (2011-2015). It is interesting to note that job growth among young people did not lead to an increase in marriage. However, the number of births significantly increased when young people who occupy jobs got married, which seems to be related to the delay in marriage among young people who are employed. Survey results about the intentions to marry and views on fertility are utilized for the explanation of the study results.

• Animal Bioscience
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• 제36권12호
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• pp.1796-1805
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• 2023

Objective: This study aims to identify heat shock protein70-2 (HSP70-2) and protamine-1 (PRM1) mRNA and protein in Madura bull sperm and demonstrate their relation as bull fertility biomarkers. Methods: The Madura bull fertility rates were grouped based on the percentage of first service conception rate (%FSCR) as high fertility (HF) (79.04%; n = 4), and low fertility (LF) (65.84%; n = 4). mRNA of HSP70-2 and PRM1 with peptidylprolyl isomerase A (PPIA) as a housekeeping gene were determined by quantitative real-time polymerase chain reaction, while enzyme-linked immunoassay was used to measure protein abundance. In the post-thawed semen samples, sperm motility, viability, acrosome integrity, and sperm DNA fragmentation index were analyzed. Data analysis was performed on the measured parameters of semen quality, relative mRNA expression, and protein abundance of HSP70-2 and PRM1, among the bulls with various fertility levels (HF and LF) in a one-way analysis of variance analysis. The Pearson correlation was used to analyze the relationship between semen quality, mRNA, proteins, and fertility rate. Results: Relative mRNA expression and protein abundance of HSP70-2 and PRM1 were detected and were found to be highly expressed in bulls with HF (p<0.05) and were associated with several parameters of semen quality. Conclusion: HSP70-2 and PRM1 mRNA and protein molecules have great potential to serve as molecular markers for determining bull fertility.

• Asian-Australasian Journal of Animal Sciences
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• 제9권6호
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• pp.705-709
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• 1996

A simplified dilutor for cock spermatozoa at ambient temperature was achieved by adjusting the 5% concentration of fructose in isotonic saline. Motility of cock spermatozoa was arrested completely for maximum 6 hrs without affection the survivability of spermatozoa by employing this sugar. To study the effect of high concentration of fructose on fertility, sperm were inseminated with or without fructose at different hrs. Fructose from semen samples was removed by centrifugation. High fertility obtained in the hens inseminated with fructose free sperm (washed). In addition, washed sperm maintained the 85.00% fertility for 6 hrs in winter season ($17-21^{\circ}C$) and 82.67% fertility for 3 hrs in summer season ($31-35^{\circ}C$). Whereas control groups showed 47.33 and 25.33% fertility in winter and summer season respectively. No significant difference was found in percent motility and live counts between the control and washed experimental groups during winter season. However, these measures differed significantly in summer. Washing of cock spermatozoa more than once, high speed centrifugation and more duration for centrifugation proved harmful to fertility. It may be concluded that fructose (5%) can be used as a motility or metabolic inhibitor of spermatozoa for short-term storage of cock semen at ambient temperatures.

• Clinical and Experimental Reproductive Medicine
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• 제44권4호
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• pp.187-192
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• 2017

Although the survival rate of hematologic malignancies in young patients is very high, cytotoxic therapies such as chemotherapy and total body irradiation therapy can significantly reduce a patient's reproductive capacity and cause irreversible infertility. Early ovarian failure also commonly occurs following additional cancer treatment, bone marrow transplantation, or autologous transplantation. Because the risk of early ovarian failure depends on the patient's circumstances, patients with a hematologic malignancy must consult health professionals regarding fertility preservation before undergoing treatments that can potentially damage their ovaries. While it is widely known that early menopause commonly occurs following breast cancer treatment, there is a lack of reliable study results regarding fertility preservation during hematologic malignancy treatment. Therefore, an in-depth discussion between patients and health professionals about the pros and cons of the various options for fertility preservation is necessary. In this study, we review germ cell toxicity, which occurs during the treatment of hematologic malignancies, and propose guidelines for fertility preservation in younger patients with hematologic malignancies.

• Child Health Nursing Research
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• 제26권3호
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• pp.329-337
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• 2020

Purpose: This study investigated intentions and attitudes towards future parenthood and awareness of fertility among university students in South Korea. Methods: The participants comprised 166 female and male undergraduate students enrolled at five universities. A cross-sectional survey was conducted from May to July 2019 using the Korean version of the Fertility Awareness Questionnaire and Attitudes of Parenthood. The data were analyzed using descriptive statistics based on participants' general characteristics, the χ² test to identify differences in intentions, and the t-test to evaluate attitudes towards parenthood and awareness of fertility in female and male students. Results: Both female and male students desired to have two children, but they lacked awareness about fertility. The possibility of combining work and having children, along with the availability of childcare resources, impacted the desire for parenthood. Male students tended to consider parenthood as less impactful on their lives and careers than female students. Social structures might also impact the decision to have children. Conclusion: It is important to provide health education emphasizing fertility awareness and parenthood in young adulthood so participants can consider these facts in advance. In addition, the government should provide resources for couples making parenthood decisions.

• 한국연초학회지
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• 제21권1호
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• pp.36-48
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• 1999

Field test was conducted in Chungbuk province to evaluate the soil fertility using landscape and soil attributes by application of geographic information system(GIS) in 48 tobacco fields during 2 years(1996 ; 23 fields, 1997 ; 25 fields). The soil fertility factors and fertilizer effects were estimated by twenty five independent variables including 13 chemical properties and 12 GIS databases. Twenty five independent variables were classified by two groups, 15 quantitative indexes and 10 qualitative indexes and were analyzed by multiple linear regression (MLR) of SAS, REG and GLM models. The estimation model for evaluation of soil fertility and fertilizer effect was made by giving the estimate coefficient for each quantitative index and for each group of qualitative index significantly selected by MLR. Estimation for soil fertility factors and fertilizer effects by independent variables was better by MLR than single regression showing gradually improvement by adding chemical properties, quantitative indexes and qualitative indexes of GIS. Consequently, it is assumed that this approach by MLR with quantitative and qualitative indexes was available as an evaluation model of soil fertility and recommendation of optimum fertilization for tobacco field.

• 한국콘텐츠학회논문지
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• 제16권1호
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• pp.558-567
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• 2016

한국과 비슷한 초저출산율에서 출산율 회복에 성공한 프랑스의 경우 1980년부터 출산율이 계속 하락하여 1994년에는 1.66까지 낮아졌으나 1990년대 중반부터 적극적인 가족지원정책을 통해 출산율이 증가하여 2008년 2.02명, 2010년 1.99명, 2013년 현재 2.0명으로 유럽국가 군에서 선두를 유지하고 있다. 본 연구는 이름하여 선진 복지국가 군으로 분류되지 않는 프랑스가 어떻게 저출산 문제를 극복할 수 있었는가를 역사적, 사회 경제적 측면, 제도적 측면 등에서 살펴보고, 프랑스의 저출산 문제 극복 요인들이 비슷한 문제를 안고 있는 한국사회에 주는 시사점을 찾아보고자 한다.