排序方式： 共有102条查询结果，搜索用时 15 毫秒
101.
LI DeSheng~ CUI HengMin~ WANG ChengDong~ LING ShanShan~ HUANG Zhi~ & ZHANG HeMin* China Research Conservation Center for the Giant P a Ya’an China Medical College of Animal Sichuan Agricultural University Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education State Conservation Center for Gene Re- sources of Endangered Wildlife Hangzhou 《科学通报(英文版)》2011,56(24):2559-2564
Captive populations provide a precious genetic resource for endangered animals and a source of individuals for reintroduction to depleted habitats. Therefore, accuracy in determining paternity is of vital importance for managing captive populations and in selecting representative individuals of known genetic characteristics for release. In this study, we established a fast and effective method to conduct paternity testing for captive giant pandas in the Wolong population. This technique uses two highly poly... 相似文献
102.
在常用的计算时间阈值识别方法的基础上,提出了一种改进的基于 URL 页面类型、页面信息量和访问时间的平均阈值识别方法.针对不同的页面类型采用不同的阈值计算方法设置时间阈值,相对于已有的对所有用户页面使用单一的先验阈值和现有动态阈值计算,该方法能够更真实地反映用户会话的情况,且识别的准确率有了较大提高. 相似文献