• 한국비블리아학회지
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• 제27권3호
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• pp.201-233
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• 2016

본 연구는 초등학교 3~6학년 다문화가정 어린이와 일반가정 어린이를 대상으로 문화다양성교육을 제공함으로써 세계의 여러 다른 문화와 다양한 가치, 삶의 방식을 존중하고 문화다양성에 대한 인식을 개선하고자 하였다. 이를 위해 공공도서관에서의 문화다양성교육 프로그램을 개발하여 적용하고 문화다양성교육 프로그램에 대한 사전-사후 인식 차이, 실험집단-비교집단의 인식 차이, 도서관 서비스와 이용률 및 서비스 활성화 방법에 대해 분석하였다. 그 결과, 문화다양성교육 프로그램 인식조사를 통해 문화다양성에 대한 이해, 수용, 배려, 존중 등이 높아진 것으로 나타났다.

• Asian-Australasian Journal of Animal Sciences
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• 제33권1호
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• pp.12-23
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• 2020

Objective: The objective of a conservation program is to maintain maximum genetic diversity and preserve the viability of a breed. However, the efficiency of a program is influenced by the ability to accurately measure and predict genetic diversity. Methods: To examine this question, we conducted a simulation in which common measures (i.e. heterozygosity) and novel measures (identity-by-descent probabilities and parental genomic components) were used to estimate genetic diversity within a conserved population using double-labeled single nucleotide polymorphism markers. Results: The results showed that the accuracy and sensitivity of identity-by-state probabilities and heterozygosity were close to identity by descent (IBD) probabilities, which reflect the true genetic diversity. Expected heterozygosity most closely aligned with IBD. All common measures suggested that practices used in the current Chinese pig conservation program result in a ~5% loss in genetic diversity every 10 generations. Parental genomic components were also analyzed to monitor real-time changes in genomic components for each male and female ancestor. The analysis showed that ~7.5% of male families and ~30% of female families were lost every 5 generations. After 50 generations of simulated conservation, 4 male families lost ~50% of their initial genomic components, and the genomic components for 24.8% of the female families were lost entirely. Conclusion: In summary, compared with the true genetic diversity value obtained using double-labeled markers, expected heterozygosity appears to be the optimal indicator. Parental genomic components analysis provides a more detailed picture of genetic diversity and can be used to guide conservation management practices.

• Asian-Australasian Journal of Animal Sciences
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• 제26권6호
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• pp.755-765
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• 2013

The accumulation of inbreeding and the loss of genetic diversity is a potential problem in the modern swine breeds in China. Therefore, the purpose of this study was to analyze the pedigrees of Chinese Duroc (CD), Landrace (CL) and Yorkshire (CY) swine to estimate the past and current rates of inbreeding, and to identify the main causes of genetic diversity loss. Pedigree files from CD, CL and CY containing, 4529, 16,776 and 22,600 records, respectively, were analyzed. Pedigree completeness indexes of the three breeds, accounting for one generation back, were 83.72, 93.93 and 93.59%, respectively. The estimated average annual inbreeding rates for CD, CL and CY in recent three years were 0.21, 0.19 and 0.13%, respectively. The estimated average percentage of genetic diversity loss within each breed in recent three years was about 8.92, 2.19, and 3.36%, respectively. The average relative proportion of genetic diversity loss due to unequal contributions of founders in CD, CL and CY was 69.09, 57.95 and 60.57%, and due to random genetic drift was 30.91, 42.05 and 39.43%, respectively. The estimated current effective population size for CD, CL and CY was 76, 117 and 202, respectively. Therefore, CD has been found to have lost considerable genetic diversity, demanding priority for optimizing the selection and mating to control future coancestry and inbreeding. Unequal contribution of founders was a major cause of genetic diversity loss in Chinese swine breeds and random genetic drift also showed substantial impact on the loss of diversity.

• 한국전자파학회논문지
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• 제10권5호
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• pp.766-776
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• 1999

본 논문에서는 실내 전파 환경에서의 편파 다이버시티와 공간 다이버시티의 성능을 분석하기 위하여 영상 법을 기본으로 한 3차원 광선 추적법을 이용하였다. 본 모텔링은 선호강도 뿐만 아니라 채널의 페이딩 특성 을 예측할 수 있기 때문에 편파 및 공간 다이버시티 기법의 성능을 분석하는데 이용될 수 있다. 측정과 시율 레이션 결과로부터 편파 및 공간 다이버시티가 실내 무선 통선 채널의 성능을 향상시킬 수 있음을 확인하였 고, 특히 지향성 안테나를 이용한 편파 다이버시티를 제안하여 기존의 다이폴 안테나를 이용하는 다이버시티 기볍보다 우수한 성능을 가짐을 보였다.

• Asian-Australasian Journal of Animal Sciences
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• 제20권12호
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• pp.1783-1790
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• 2007

The genetic diversity of domestic quail and two wild quail species, Japanese （Coturnix coturnix）and Common quail (Coturnix japonica), found in China was studied using microsatellite DNA markers. According to a comparison of the corresponding genetic indices in the three quail populations, such as Polymorphism Information Content (PIC), Mean Heterozygosity ($\bar{H}$) and Fixation Index, wild Common quail possessed rich genetic diversity with 4.67 alleles per site. Its values for PIC and $\bar{H}$ were the highest, 0.5732 and 0.6621, respectively. Domestic quail had the lowest values, 0.5467 and 0.5933, respectively. Wild Japanese quail had little difference in genetic diversity from domestic quail. In addition, from analyses of the fuzzy cluster based on standard genetic distance, the similarity relationship matrix coefficient between wild Japanese quail and domestic quail was 0.937, and that between wild Common quail and domestic quail was 0.783. All of these results showed that the wild Japanese quail were closer to the domestic quail for phylogenetic relationship than wild Common quail. These results at the molecular level provide useful data about quail's genetic background and further supported the hypothesis that the domestic quail originated from the wild Japanese quail.

• 한국전자파학회논문지
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• 제9권3호
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• pp.369-377
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• 1998

본 논문에서는 편파 다이버시티에 대한 전파전파 특성 분석과 상용의 이동전화 기지국 시스템에 적용하기 위 한 가능성을 검증하였다. 이를 위하여 교외지역 및 주거지역을 대상으로 $\pm45^{\circ}$ 선형 편파특성을 가진 이중편파 안테나를 이용하였고, 다이버시티 이득(Diversity gain)과 상호상관계수(Cross correlation coefficients)의 관 점에서 기존의 공간 다이벼시티의 성능과 비교 분석하였다. 분석 결과 공간 다아버시티가 편파 다이버시티보다 1~2 dB 정도의 다이버시티 이득은 높게 나타났으며, 휴대용 이동전화 환경에서는 편파다이버시티와 공간다이 버시티 각각에 대한 상호 상관 계수는 그 차이가 $\pm0.1$ 이내로 큰 차이가 없음올 CDF(Cummulative Distrib bution Function) 분석을 통하여 확인할 수 있었다.

• Journal of electromagnetic engineering and science
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• 제15권2호
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• pp.115-119
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• 2015

This paper proposes a reconfigurable square-patch antenna with polarization diversity. The proposed antenna consists of a square radiating patch and a Y-shaped feed structure with two PIN diodes. The shape of the feed structure can be changed by adjusting the bias states of the two PIN diodes, which helps switch between two orthogonal linear polarizations. The polarization diversity characteristic is validated by the simulated current distribution and the measured radiation pattern.

• 아시안잔디학회지
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• 제9권2호
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• pp.131-136
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• 1995

The herb, shrub, understory and canopy strata, which arbitrarily delineated by size classes, were sampled separately. The former one were sampled by the pin-point quadrat method. And remaining three by size quadrats, diversity (H= =$\Sigma$ Pi log Pi) of of each stratum was estimated for each set of census data. Species diversity within a stratum was independent of sample plot size above a minimum cumulative area. Diversity based on plotless and plot samples could he determined by the same equation, and by pooling the data needed to estimate diversity of each stratum.

• Journal of Forest and Environmental Science
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• 제26권3호
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• pp.161-170
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• 2010

A study was conducted for indentifying the floral biodiversity of woody species by calculating four diversity indices using data collected from 4 stands of different age groups and disturbance regimes in two areas of Madhupur tract. Results showed that highest species diversity in the old growth secondary coppice forest (>60 years) under moderate anthropogenic disturbances of Madhupur National Park area (delete (D=0.74, H'=3.36) followed by old growth secondary forest stands (>40 years) under moderate disturbances at Bhawal National Park area (D=0.65, H'=2.81). Plant species diversity of the young enrichment plantations (<20 years and <15 years) under high anthropogenic disturbances in both the areas are much low (D=0.54 and H'=2.16 and D=0.52 and H'=1.92 respectively), which indicate high anthropogenic disturbances coupled with introduction of invasive exotics that are rival for endemic species are detrimental for conservation of biological diversity of tropical moist deciduous forests of Madhupur tract in Bangladesh.

• Asian-Australasian Journal of Animal Sciences
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• 제20권2호
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• pp.178-183
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• 2007

China has numerous native domestic goat breeds, but so far there has been no extensive study on genetic diversity, population demographic history, and origin of Chinese goats. To determine the origin and genetic diversity of Chinese goats, we analyzed the complete mtDNA D-loop sequences of 183 goats from 13 breeds. The haplotype diversity value found in each breed ranged from 0.9333 to 1.0000. The nucleotide diversity value ranged from 0.006337 to 0.025194. Our results showed that there were four mtDNA lineages (A, B, C and D), in which lineage A was predominant, lineage B was moderate, and lineages C and D were at low frequencies. Lineages C and D were observed only in the Tibetan breed. The results revealed multiple maternal origins of Chinese domestic goats. There was weaker geographical structuring in the 13 Chinese goat populations, which suggested that there existed high gene flow among goat populations caused by the extensive transportation of goats in the course of history.