基于Google Maps API的地理CAI课件设计与实现

以Authorware为平台,设计、开发基于Google Maps API的强交互性的地理CAI课件,用以辅助地理课堂教学.该课件具有海量地理空间信息查询检索、显示分析的功能,并且实现代码简单,不需安装任何插件即可运行使用.以高中地理教材"城市空间结构"一课的课件设计为例,说明此课件在增加课堂教学容量、激发学生学习兴趣方面的优势.     

Decay of geometry for unimodal maps:The C~2 case

We prove that a C2 unimodal interval map with critical order not greater than 2 has the decay of geometry property, by showing that all the cross-ratio estimates needed in the previous proof for the C3 case remain true.     

涉及重整化变换的有理映照族

考虑类金刚石等级晶格上λ-态的Potts模型,采用复动力学的方法,证明了其重整化变换后的有理映照族具有Feigenbaum现象.     

Computation in cognitive science: it is not all about Turing-equivalent computation

It is sometimes suggested that the history of computation in cognitive science is one in which the formal apparatus of Turing-equivalent computation, or effective computability, was exported from mathematical logic to ever wider areas of cognitive science and its environs. This paper, however, indicates some respects in which this suggestion is inaccurate. Computability theory has not been focused exclusively on Turing-equivalent computation. Many essential features of Turing-equivalent computation are not captured in definitions of computation as (digital) symbol manipulation. Turing-equivalent computation did not play the role in McCulloch and Pitts’s early cybernetic work that is sometimes attributed to it. Finally, various segments of the neuroscientific community invoke a notion of computation that differs from the Turing-equivalent notion.     

凸度量空间中可交换映射的公共不动点定理

本文主要研究了可交换映射在凸度量空间的不动点问题.文中所选取的映射是从紧子集到全空间的可交换映射,通过合理运用凸度量空间的空间性质进行构造不等式,再运用选取映射的特点得到了映射的公共不动点结论.     

Modeling the hot working behavior of near-α tita nium alloy IMI 834

The hot working behavior of near-a titanium alloy IMI 834 with a duplex starting microstructure was studied using the technique of processing map.The processing map was interpreted in terms of the microstrucmral processes occurring during deformation,based on the values of dimensionless parameter η which represents the energy dissipation through microstructural processes.An instability criterion（ξ<0） was also applied to demarcate the flow instability regions in the processing map.Both the parameters（η and ξ） were computed using the experimental data generated by carrying out hot compression tests over a range of temperatures（850-1060℃） and strain rates(3×10^-4-1/s).The deterministic domains observed under the investigated temperature and strain rate conditions were attributed to continuous dynamic recrystallization or globularisation of a lamellae,dynamic recrystallization and growth of β grains through microstructural observations.An unified strain compensated constitutive equation was established to describe the hot working behavior of the material in the selected temperature-strain rate range.The established constitutive equation was validated using standard statistical parameters such as correlation coefficient and average absolute relative error.     

一种新的自学习特征映射算法研究

为了有效地提高矢量量化(VQ)码书的性能,提出了一种新的自学习特征映射(SLM)算法,并应用到图像VQ中,实验表明,与自组织特征映射(SOM)算法相比,SLM算法具有聚类特性好和峰峰信噪比高等优点,是一种非常有前途的码书设计算法.     

物体色度值的计算方法探讨

文章从理论上探讨了色度学的基本原理,结合色度图阐述了色度参数的定义方法;最后从理论上介绍了在一束特定光束照射下,物体的三刺激值,色纯度以及饱和纯度等色度值的计算方法.     

关于网络计划图的绘制

给出了绘制网络图的一种方法，根据１项工程中各工序之间的逻辑关系，利用结点删去法，画出各个工序的工序网络图；其次按照所画各工序网络图中结点代号的先后顺序，装配忧１张网络图；按照绘制网络图的有关规则对所得到的网络图进行适当的调整，修正，得到１张正确的网络图     

HARMONIC MAPS VERSUS POISSON EQUATIONS ON NONCOMPACT RIEMANNIAN MANIFOLDS

1.Introducti0llStartingfromtheworkofP.LiandT.F.Taml1'2])therearesomeprogressonthestudyofharmonicmaPsbetweennegativelycurvedc0mplete,noncompactriemannianmanifolds.Wemayquote[2-5]justforafew.Thenewstartingpoilltin[1]isthea-ssumption0fagivenmaPwithitstensi0nfieldinasuitableSob0levspace.Asacomparison,wementi0nthatthekeytechniqueofthemethod0fEells-Sampsonl6]istheuseofaBochnertypeevoluti0n0ftheenergydensitywithaninitialdataoftotalenergy.InthispaPer,wetrytogivealargec1assofapprokimateharmonicma…