维普中文期刊产品整合服务
9篇 您的检索式:作者名="Zhan Xingzhi"
    题名 作者 年代 出处 被引量
1On the span of Hadamard products of vectors 显示文摘Qiu Li Zhan Xingzhi 2007Linear Algebra and Its Applications2007,422,1:1
2Inequalities involving unitarily invariant norms and operator monotone functions显示文摘HIAI F ZHAN Xingzhi 2002Linear Algebra and Its Applications2002,341,2:1
3Norm inequalities related to operator monotone functions显示文摘Tsuyoshi Ando Xingzhi Zhan 1999Mathematische Annalen1999,,4:1
4Extermal eigenvalues of real symmetric matrices in an interval显示文摘Zhan Xingzhi 1996Siam J Matrix Anal Appl1996,27,3:1
5On singular numbers of τ-measurable operators 显示文摘Zhan Xingzhi 2004Journal of Shanghai University (English Edition)2004,8,:1
6On the matrix equation X + A^T X^-1A = 1 显示文摘Zhan Xingzhi Xie Jianjun 1996Linear Algebra and its Applications1996,247,:1
7Possible numbers of ones in 0-1 matrices with given rank显示文摘Hu Qi Li Yaqin Zhan Xingzhi 2005Linear and Multilinear Algebra2005,53,6:1
8Comparative urbanization of birds in China and Europe based on birds associated with trees显示文摘Urbanization effects on living organisms are spatially heterogeneous.Here we quantified the abundance of birds per tree in forested urban and rural habitats for 85,829 trees mainly in China and Europe.A population model was based on the assumption that:1)birds have a normally distributed habitat preference;2)an increase in population size linked to the habitat preference;3)a population size dependent on the habitat preference;and 4)the removal of a certain fraction of individuals giving rise to extinction.We tested for large-scale differences in the impact of urbanization on the frequency distribution of the difference in abundance between urban and rural habitats in China and parts of Europe.The difference in the frequency distribution of urban population density of birds in trees minus rural population density of birds in trees in China and Europe was statistically significant suggesting that the abundance of birds differed between trees in urban and rural habitats,but more so in China than in Europe.We hypothesize that more pronounced differences in China than in Europe may have arisen due to the Four Pests Campaign in 1958-1962 that resulted in death of hundreds of millions of birds(mainly tree sparrows Passer monfanus,but also numerous other less common species that were starting to become urbanized around 1960).Species that were less common in 1960 could not sustain reductions in population size in urban areas and hence these species are still rare or absent in urban areas today 60 years later.Anders Pape MOLLER Canwei XIA Bo ZHOU Xianli CHE Xingzhi CHE Changzhang FENG Karsten LAURSEN Federico MORELLI Wangming LI Jianping LIU Qing QUAN Min ZHANG Qiang ZHANG Qiangwen ZHAN Laikun MA Haitao WANG Fasheng ZOU Wei LIANG 2019Current Zoology2019,65,6:0
9精细的Rado最优化定理显示文摘给定x=(x1,…,xn)^T∈R^n,令x[1]≥…≥x[n]表示x的分量按非增次序的重排.设x=(xi),y=(yi)∈R^n,若对于k=1,2,…,n-1。Xingzhi Zhan 陆柱家(译) 姚景齐(校) 2008数学译林2008,27,1:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费