移动智能终端“一张图”设计与关键技术研究

采用MVC架构模式构建了数据集成、辅助决策的离线版移动智能终端"一张图"系统,在概述系统主要功能的基础上,重点阐述了本系统开发过程中所应用的空间数据索引、数据离线查询和数据更新等关键技术.     

基于开放地图引擎的地图编注实现技术研究

当需要了解地理位置的详细信息时,通过百度地图上提供信息不能完全满足用户需求。针对百度地图在小区域内显示信息不完整的缺陷,从百度地图所提供的API接口出发,探讨了其开放接口的使用方法。通过对百度地图API进行二次开发,利用Java Script和JSP技术,实现了小区域内地点信息标注及点、线、面图层添加功能,采用了AJAX技术,实现了页面的无刷新访问和地图图层的动态加载,节省了网络流量,同时对小区域导航也进行了初步探讨,实现了自定义图层在百度地图上的添加,对利用百度地图进行特定区域内地理信息展示应用开发具有较好的借鉴意义。     

Endoderm contributes to endocardial composition during cardiogenesis

Heart formation commences from a single heart tube, which fuses from bilateral primordial heart fields. The developing heart tube is composed of outerlayer myocardial cells and innerlayer endocardial cells. Several distinct populations of precardiac cells contribute to cardiac morphogenesis. However, it still remains not very clear about the lineage of endocardium at gastrulation stage. Thereby, this study focused on ascertaining the correlation between the hypoblast in gastrulation and endocardium during cardiogenesis. Firstly, the fusing heart tube morphologically is closed to endoderm-derived pharynx floor, implying the possibility that pharynx floor might be wrapped into the formation of endoderm. Secondly, HNK1 is expressed in hypoblast strongly at gastrula stage and subsequently appeared in endocardium of cardiogenesis. Moreover, fate map data displayed that DiI labeled hypoblast was also present in endocardium later on. One more evidence is chickquail chimera of hypoblast transplantation, in which quailhypoblast derivative could be identified in endocardium of cardiogenesis by QCPN antibody. In sum, our current data suggests that endoderrn in gastrula contribute at least partly to the formation of endocardium of cardiogenesis.     

Smith特殊指数与Borsuk-Ulam型定理

本文利用Smith周期交换理论,给出了带有无定点周期变换的拓扑空间的Smith特殊指数的计算和若干Borsuk-Ulam型定理。     

L—fuzzy拓扑空间中的同胚定义

以反例表明现有LF拓扑理论中诸同胚概念均存在局限性,进而给出一种新的同胚定义。该种同胚与其它概念相和谐,且能充分反映LF拓扑空间的结构特点。     

太行山猕猴〔Macaca mulatta(Rhesus monkey)〕染色体组型分析

本文报道了太行山猕猴染色体组型的观察,并根据测试数据经统计分析,绘出染色体组型图及其相对长度、臂比指数和置信限。结果证明太行山猕猴和其它地区的猕猴,在染色体组型上无明显差异。     

一类非线性系统的定性分析

通过对非线性方程d^2x/dt^2=-(sinx-αsin2x)的定性分析，得出其各种轨道图形及闭轨的周期映射性质．     

关于球面中子流形的一个刚性定理

本文研究球面中子流形的Gauss映照,推广了Nomizu和Smyth关于球面中超曲面的一个刚性定理。     

Two New Methods for Calculating the b_js of Multivalued Functions

Two new methods for evaluating the coefficients of the canonical Reed-Muller expansion for a given multivalued function are proposed. These methods are simple in operation and convenient for memory.