本文在ANA序列下,利用Rosenthal不等式,研究边缘频率插值密度估计的一致强相合性,并在适当的条件下得到其收敛速度,拓展了已有文献的研究。为验证结论的有效性,使用R软件进行数值模拟。模拟结果显示,随着样本量的增大,边缘频率插值密度...本文在ANA序列下,利用Rosenthal不等式,研究边缘频率插值密度估计的一致强相合性,并在适当的条件下得到其收敛速度,拓展了已有文献的研究。为验证结论的有效性,使用R软件进行数值模拟。模拟结果显示,随着样本量的增大,边缘频率插值密度估计值逐渐趋于真实密度。In this paper, we study the uniform strong consistency and its rate of the density estimation of edge frequency polygons under asymptotically negatively associated (ANA) sequences using Rosenthal-type inequality, which extends the existing studies in the literature. To validate the theoretical conclusions, we conduct numerical simulations in R software. The results demonstrate that the proposed density estimator converges uniformly to the true density as the sample size increases.展开更多
[Objective] The study was to analyze the phylogenesis of Anas platyrhynchos. [Method] Complete sequence of mitochondrial ND2 gene of 4 Anas platyrhynchos was determined by direct DNA sequencing based on PCR products. ...[Objective] The study was to analyze the phylogenesis of Anas platyrhynchos. [Method] Complete sequence of mitochondrial ND2 gene of 4 Anas platyrhynchos was determined by direct DNA sequencing based on PCR products. Combined with ND2 gene sequences of the Anas Linnaeus accessed in GenBank, phylogenetic tree was constructed by Neighbor-joining and maximum parsimony methods. [Result] The ND2 gene sequences of 4 Anas platyrhynchos were identical(1 041 bp in length; the nucleotide contents of A, G, T, and C were 28.91%, 13.35%, 20.75% and 36.98% respectively; A+T content approximated to that of C+G). Sequences of ND2 gene of mallard were same as spotbill duck, and had high homology with others. The phylogenetic trees indicated mallard and spotbilled duck were close in genetic relationship, both shared a haplotype; then Philippine duck, green-winged teal and northern pintail fell into branch ''A". [Conclusion] The domestic duck may be domesticated from mallard and spotbilled duck.展开更多
腰果是引起人们过敏的主要食物之一。作者采用生物信息学方法,通过Pubmed网络服务器、生物信息分析软件SOPMA、swiss-model网络服务器、DNAStar生物分析软件等对腰果主要过敏原Ana o 2的结构和抗原表位进行预测,分析Ana o 2蛋白的抗原...腰果是引起人们过敏的主要食物之一。作者采用生物信息学方法,通过Pubmed网络服务器、生物信息分析软件SOPMA、swiss-model网络服务器、DNAStar生物分析软件等对腰果主要过敏原Ana o 2的结构和抗原表位进行预测,分析Ana o 2蛋白的抗原表位可能是108-111,181-186,217-218,234-238,244-255,283-287。这为腰果过敏原的进一步研究提供理论参考,并对开发低过敏腰果制品提供帮助。展开更多
文摘本文在ANA序列下,利用Rosenthal不等式,研究边缘频率插值密度估计的一致强相合性,并在适当的条件下得到其收敛速度,拓展了已有文献的研究。为验证结论的有效性,使用R软件进行数值模拟。模拟结果显示,随着样本量的增大,边缘频率插值密度估计值逐渐趋于真实密度。In this paper, we study the uniform strong consistency and its rate of the density estimation of edge frequency polygons under asymptotically negatively associated (ANA) sequences using Rosenthal-type inequality, which extends the existing studies in the literature. To validate the theoretical conclusions, we conduct numerical simulations in R software. The results demonstrate that the proposed density estimator converges uniformly to the true density as the sample size increases.
基金Supported by National Key Technology R&D program(2006BAD06B06)National Infrastructure of Natural Resources for Science and Technology(2004DKA30460)~~
文摘[Objective] The study was to analyze the phylogenesis of Anas platyrhynchos. [Method] Complete sequence of mitochondrial ND2 gene of 4 Anas platyrhynchos was determined by direct DNA sequencing based on PCR products. Combined with ND2 gene sequences of the Anas Linnaeus accessed in GenBank, phylogenetic tree was constructed by Neighbor-joining and maximum parsimony methods. [Result] The ND2 gene sequences of 4 Anas platyrhynchos were identical(1 041 bp in length; the nucleotide contents of A, G, T, and C were 28.91%, 13.35%, 20.75% and 36.98% respectively; A+T content approximated to that of C+G). Sequences of ND2 gene of mallard were same as spotbill duck, and had high homology with others. The phylogenetic trees indicated mallard and spotbilled duck were close in genetic relationship, both shared a haplotype; then Philippine duck, green-winged teal and northern pintail fell into branch ''A". [Conclusion] The domestic duck may be domesticated from mallard and spotbilled duck.
基金国家自然科学基金项目(30871752,30570421)The International Science and Technology(ISAT)Linkages Fund,Royal Soci-ety of New Zealand(ISATB09-33)+1 种基金广东省科技重点专项(2003A3080502)教育部留学回国人员科研启动基金资助项目
文摘腰果是引起人们过敏的主要食物之一。作者采用生物信息学方法,通过Pubmed网络服务器、生物信息分析软件SOPMA、swiss-model网络服务器、DNAStar生物分析软件等对腰果主要过敏原Ana o 2的结构和抗原表位进行预测,分析Ana o 2蛋白的抗原表位可能是108-111,181-186,217-218,234-238,244-255,283-287。这为腰果过敏原的进一步研究提供理论参考,并对开发低过敏腰果制品提供帮助。
