• 대한생식의학회:학술대회논문집
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• 대한불임학회 2002년도 제42차 춘계학술대회
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• pp.87.2-88
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• 2002

• 한국환경과학회지
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• 제1권1호
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• pp.23-27
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• 1992

The changes of pectoral muscle size (as an index of protein reserves) and fat reserves (as an index of lipid) were measured in wintering Dunlin during 1988 -1989 on two estuaries located in the south coast of Korea. The mean of lean mass of February population was greater(11.8%) than that of October population. SMI of October population was greater(4.5%) than that of February population and lipid index of October population also greater(1.6%) than that of February population. This show that the body condition of October population is better than February population. The mean of fat and protein reserves of 22 % of Dunlin arriving on October for their wintering were higher than that of others, this group seems to continue their migration to south further and 11% of the wintering population seems to starve during winter.

• Asian-Australasian Journal of Animal Sciences
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• 제10권4호
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• pp.428-434
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• 1997

The effect of genetic diversity in sub-populations on breeding efficiency was examined with prospect of potential crossbreeding. Simulation study of selection was performed for 20 generations with 20 replications each, comparing average breeding values and inbreeding coefficients between the two breeding systemes; single population scheme and two population scheme. The different genetic levels were assumed to be caused by different gene frequencies. Phenotypes of two traits generated polygenic effect with additive 36 loci and residuals distributed normally were selected by selection index procedure. High genetic gain with less inbreeding was clearly recognized in the single population scheme, independently of difference in genetic level, economic weight and genetic correlation. Genetic correlation after selection in the single population scheme was lower than the two population scheme. When crossbreeding between the sub-population was taken into account, superiority of the two population scheme was suggested under those restrictions; difference in genetic level is moderate, selection criterion for the two traits is not far from even economic weight, and genetic correlation is positive with low to moderate value. The use of complementarity increased the possibility of the two population scheme.

• 한국소음진동공학회논문집
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• 제24권10호
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• pp.802-808
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• 2014

The purpose of this study is to suggest efficient methods for estimating population exposed to noises by analyzing differences of population exposed to noises estimated by each method through comparing exposed population estimated by utilizing existing methods and those estimated by using census output areas reflecting the actual population information of each address. For population exposed to noises, the error of exposed population estimated by using the per capita living space turned out to be the biggest, and other estimation methods had no significant difference. For population exposed to excess noises, as a result of analyzing population estimated by each method based on census output areas, the error of the method using a grid noise map turned out to be the biggest. For the method to estimate population exposed to noises by using a noise map, the estimation methods using census output areas and total ground area are considered to be more rational than the grid noise map estimation method or the method to estimate the living space per capita.

• 농촌계획
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• 제25권3호
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• pp.1-9
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• 2019

Population is important as a fundamental element of local industry and economy, and census data is essential to regional planning and policy making. Although there have been many researches on population and regional planning, there are few studies on population considering spatial unit. In this study, the population of three spatial scales were compared in order to establish the spatial unit suitable for the rural planning. The study area is Gangwon, Chungcheong-Nam, Chungcheong-Buk, Jeolla-Nam, Jeolla-Buk, Gyeonsang-Nam, Gyeonsang-Buk and Jeju province. Population were compared using statistical data analysis, GIS visualization, and spatial statistics. The mean, maximum, minimum, and variance of population were calculated and the coefficient of variation according to spatial unit was compared. The mean, maximum, minimum, and variance of population were calculated and the coefficient of variation according to spatial unit was compared. As the results, the census output area unit is difficult to interpret spatial analysis results. Administrative district unit has the limit that includes areas where the population does not live. The grid unit is well suited to the geographical characteristics but has many disadvantages of the grid with small population. Therefore, It is necessary to complement the limits of the Eup and Myeon-dong administrative district through the grid unit data.

• 한국발생생물학회지:발생과생식
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• 제23권2호
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• pp.193-198
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• 2019

Genomic DNA samples were obtained from cultured penaeid shrimp (Penaeus chinensis) individuals such as fresh shrimp population (FSP) and deceased shrimp population (DSP) from Shinan regions in the Korean peninsula. In this study, 233 loci were identified in the FSP shrimp population and 162 in the DSP shrimp population: 33 specific loci (14.2%) in the FSP shrimp population and 42 (25.9%) in the DSP population. A total of 66 (an average of 9.4 per primer) were observed in DSP shrimp population, whereas 55 unique loci to each population (an average of 7.9 per primer) in the FSP shrimp population. The Hierarchical dendrogram extended by the seven oligonucleotides primers indicates three genetic clusters: cluster 1 (FRESH 01, 02, and DECEASED 12, 13, 15, 16, 17, 19, 20, 22) and cluster 2 (FRESH 03, 04, 05, 06, 07, 08, 09, 10, 11, and DECEASED 14, 18, 21). Among the twenty-two shrimp, the shortest genetic distance that exposed significant molecular differences was between individuals 20 and 16 from the DSP shrimp population (genetic distance=0.071), while the longest genetic distance among the twenty-two individuals that established significant molecular differences was between individuals FRESH no. 02 and FRESH no. 04 (genetic distance=0.477). In due course, PCR analysis has revealed the significant genetic distance among two penaeid shrimp populations.

• Asian Pacific Journal of Cancer Prevention
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• 제15권19호
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• pp.8503-8508
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• 2014

Background: After the WHO recommended HPV vaccination of the general population in 2009, government support of HPV vaccination programs was increased in many countries. However, this policy was not implemented in Korea due to perceived low cost-effectiveness. Thus, the aim of this study was to analyze the cost-utility of HPV vaccination programs targeted to high risk populations as compared to vaccination programs for the general population. Materials and Methods: Each study population was set to 100,000 people in a simulation study to determine the incremental cost-utility ratio (ICUR), then standard prevalence rates, cost, vaccination rates, vaccine efficacy, and the Quality-Adjusted Life-Years (QALYs) were applied to the analysis. In addition, sensitivity analysis was performed by assuming discounted vaccination cost. Results: In the socially vulnerable population, QALYs gained through HPV vaccination were higher than that of the general population (General population: 1,019, Socially vulnerable population: 5,582). The results of ICUR showed that the cost of HPV vaccination was higher for the general population than the socially vulnerable population. (General population: 52,279,255 KRW, Socially vulnerable population: 9,547,347 KRW). Compared with 24 million KRW/QALYs as the social threshold, vaccination of the general population was not cost-effective. In contrast, vaccination of the socially vulnerable population was strongly cost-effective. Conclusions: The results suggest the importance and necessity of government support of HPV vaccination programs targeted to socially vulnerable populations because a targeted approach is much more cost-effective. The implementation of government support for such vaccination programs is a critical strategy for decreasing the burden of HPV infection in Korea.

• 응용통계연구
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• 제33권3호
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• pp.347-355
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• 2020

IM 모형(Isolation-with-Migration model; IM model)은 현존하는 집단들의 크기, 그 집단들이 공통 조상 집단으로부터 분리 된 분화 시간, 그리고 현존 집단 간의 이주율을 추정하는 데 널리 사용되는 진화 모형이다. IM 모형과 같은 진화 모형은 그 진화 모형 내 현존 집단으로부터 추출 된 DNA 염기서열을 분석하여 추정할 수 있다. 참인 진화 모형이 데이터가 추출되지 않은 미표본 집단(unsampled population) 혹은 소위 ghost라 불리는 집단을 포함할 때, 종종 이 미표본 집단을 제외한 진화 모델이 추론된다. 본 논문에서는 미표본 집단이 표본집단의 크기 추정에 미치는 영향을 조사하기 위해 모의실험을 수행하였다. 표본집단과 미표본집단 사이에 이주 사건들이 존재하는 경우, 표본집단의 크기의 추정량은 편향되었다. 그러나 미표본집단을 포함한 진화 모델이 추정되면 표본집단의 크기의 추정량은 많은 경우 개선되었다.

• 농촌계획
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• 제29권3호
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• pp.15-24
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• 2023

The sense of crisis regarding regional extinction due to low birth rates and an aging population is expanding. Generally, the local extinction index is used to analyze local extinction. However, it is challenging to diagnose the actual situation of village extinction risk in rural areas, even though the regional extinction index can be analyzed in units such as Si-Gun-Gu and Eup-Myeon-Dong. This difficulty arises because the regional extinction index solely relies on natural population growth indicators (elderly population and female population aged 20-39). Therefore, the purpose of this study is to develop a village extinction index that can identify the disappearance of rural villages. Additionally, the aim is to apply the developed indicators to the village (administrative ri) spatial unit. The existing regional extinction index used only mortality-related indicators as factors for natural population decline and fertility-related indicators as factors for natural population growth. However, the developed village extinction index included not only the factors of natural population change but also incorporated social population growth factors and factors related to the pace of village extinction. This is the key difference between the developed village extinction index and the existing regional extinction index. In this study, the indicators of "total population," "number of young women aged 20-44," "number of elderly population aged 70 or older," and "number of incoming population" were selected to develop a village extinction index. The village extinction index was developed by incorporating both natural population growth indicators and social population growth indicators. The developed village extinction index was applied to administrative villages. This research is expected to provide a more accurate understanding of the current state of rural villages facing extinction.

• Journal of the Korean Data and Information Science Society
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• 제28권1호
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• pp.99-108
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• 2017

대한민국 공식인구통계는 인구센서스와 장래인구추계통계와 주민등록인구통계, 세 가지가 있다. 이들 중에 장래인구추계통계는 5년마다 시행되는 인구센서스통계를 기반으로 만들어진다. 본 연구는 장래인구추계통계와 주민등록인구통계를 비교 분석하였다. 인구조사과정의 오류를 발견하기위하여 인구통계데이터들의 이상치와 특이값들을 조사하였다. 이를 기반으로 공식인구통계의 신뢰성을 검증하는데 목적을 두었다. 주민등록인구 통계에서는 0세에서 12세 사이가 나이가 증가함에 따라 인구가 줄어들어야 함에도 불구하고, 오히려 없던 인구가 생겨나서 증가하는 경향을 보였다. 장래인구추계에서는 18세에서 28세 사이가 나이가 증가함에 따라서 새로운 인구가 생겨나서 인구가 증가하는 현상을 보였다. 또한 주민등록인구에서는 2009년에서 2010년 사이에서, 장래인구추계에서는 2010년에서 2011년 사이에 전 연령대에서 나이가 증가함에 따라서 새로운 인구가 생겨나서 인구가 증가하는 기이한 현상을 보였다. 두 공식인구통계의 인구조사가 보다 정확한 검증을 통하여 수행되어질 필요가 있다. 고령화 사회에 있어서 노인 인구통계에 대한 정학한 조사에 보다 신뢰성을 높이는 것이 행정정책 수립에 보다 높은 효율성을 제공할 것이다.