Vegetation Spatial Heterogeneity of Different Soil Regions in Inner Mongolia, China

The vegetation spatial heterogeneity and ecological characteristics in different soil regions were analyzed by surveying the vegetation in 12 different soil regions of Inner Mongolia, China, including conifer- ous-broadleaf deciduous forests, shrub, grassland, and desert regions with 1122 large 2 cm × 2 cm quad- rats (actual size 30 km × 30 km, referred to as L-quadrat hereafter) in about 1.18 million km2. Each L- quadrat was divided into four small 1 cm × 1 cm quadrats (actual size 15 km × 15 km, S-quadrat). The vegetation was analyzed based on the beta-binomial distribution to describe the frequency of occurrence and spatial heterogeneity for each kind of vegetation. The weighted average of the heterogeneity of all vegeta- tion in the same soil region provides a measure of the soil regional landscape level heterogeneity which de- scribes the spatial complexity of the regional landscape composition of the existing vegetation. Comparison of the vegetation characteristics in the 12 soil regions shows that, the calcic gray soil has the highest average vegetation type per quadrat. The largest soil region is calcic chestnut soil and has the most vegetation types. Every soil region has its own dominant vegetation sequence which dominates in occurrence and dominant vegetation types which dominates in spatial heterogeneity. For the Inner Mongolian vegetation, the weighted average of the heterogeneity is 0.60 and the vegetation diversity index is 4.47.     

广州内环路的交通噪声地图

城市发展建设中各样的问题干扰着人们的生活．广州中心区内环路的建设而引起的交通噪声更是极大地影响了中心区的环境．为了控制交通噪声污染，绘制交通噪声地图、管理和削减内环路的噪声水平是迫切需要的．文中将地理信息系统的数据整合于噪声模型中，利用内环路噪声监测的多项数据，通过噪声分析软件绘制了内环路的道路交通噪声地图．该噪声地图以可视化的方式展示了道路噪声状况，并预测了监测点的噪声水平．通过预测声级和实测道路噪声声级的比较，证明该噪声地图具有较高可信度，可作为中心区环境保护决策支持的工具．     

了解积分——求和

求一个函数的黎曼积分,实际上就是一个分割、近似代替、求和、取极限的过程.求和运算是整个积分计算的轴心.就积分四部曲中的求和问题,做一个一般性的讨论.文中使用的是分析和讨论的语言,不去追求数学语言本身的严格性.目的不仅是探讨求和这个步骤,在黎曼积分意义下具体实现的过程和隐含的内容,而且对一般的积分中的求和实现的可能性、应该满足的条件、实现的过程,以及应该注意那些基本问题,也做一点儿逻辑上的探讨.已达到以知识为媒介,提高认知能力的目的.     

Comparison between a white-light interferometer and a tactile formtester for the measurement of long inner cylindrical surfaces

Shape measurements of engineering surfaces are an interesting and important application for white-light interferometry (WLI). Due to some factors such as: (a) the high-processing speed, (b) the ability to measure a huge quantity of points of the evaluated surface, and (c) the non-contacting nature; WLI has become a valuable tool for practical applications. This paper shows the achieved comparison between a modified white-light interferometer and an established measurement system, namely a formtester with a tactile spherical stylus sensor, which is the most commonly used instrument in the industry. Furthermore, this paper shows that the combination between the modified white-light interferometer and an adequate measurement and processing strategy has enabled to obtain a good agreement between optical and tactile measurements of long inner cylindrical surfaces. A cloud of points (COP) measured with the modified white-light interferometer has presented a standard deviation of about 0.3 μm when it was compared with formtester measurement of the same parts.     

用Mathematica来实现非线性规划问题

本文用Mathematica编程实现了一类有约束条件的非线性规划问题的求解。文中先介绍了该类非线性规划问题的相关定义如约束条件、惩罚函数和内点法等,又介绍了用内点法解决非线性规划问题的相关定理和算法。经过研究这些理论和算法,结合Mathematica语言的特点编写出了相应的程序,并计算了几个实例。最后简单分析了用mathematica编写内点法程序的优越性和程序中所涉及到的部分函数和语句的功能及其作用。     

江西省生态渔业模式初探

在分析江西省生态渔业发展的历史背景后归纳总结了江西省成功的生态渔业典型模式，探讨了其内部运行机制和物能循环转化流程，并就文中模式的应用推广提出了作者的见解．     

Discovery of potassic spilite (or poenite) in Langshan Group of Tanyaokou District, Inner Mongolia, China

It is believed that the albite-potash-feldspar-greenschists in the middle Proterozoic Langshan Group in Tanyackou District are synsedimentary potassic spilite (or poenite) based on the following facts and features: (i) they occur in beds and look blackish (or apple) green and compact; (ii) they bear blasto-glomeroporphyritic and blastocrystalloclastic crystals which consist of (altered) albite laths with hollow skeleton crystal texture in which there are slender dark strips and minor pyroxene, and blasto-amygdaloid filled with pyrite, chlorite, magnetite, etc.; (iii) the results of the petrochemical diagrams show that they are orthometamorphites; (iv) Sm-Nd isotopic age of them is 1 824 Ma (model age (t_DM) is 2 006–2 132 Ma).     

内蒙古高校学报2002～2006年评价指标统计分析

以《中国学术期刊综合引证报告》(CAJCCR)为评价工具,采用文献计量学、数值比较和分类统计的方法,对内蒙古13家高校学报2002~2006年的评价指标(载文量、影响因子、总被引频次、基金论文比)进行分析.结果表明,内蒙古13家高校学报总体质量不断提高,但个体之间的差异和差距较大,发展不平衡,与全国同类高校学报相比,内蒙古高校学报质量偏低,作为地方高校学报应找准定位,走特色化办刊之路.     

On the Accuracy of Gaussian Approximation in Hilbert Space

The bound on remainder term in CLT for a sum of independent random variables taking values in Hilbert space is obtained. This bound sharpens the result due to Bentkus and Götze.     

蒙古独立外因探源

蒙古独立问题前后经历约半个世纪 ,其外部原因与沙俄、苏俄、苏联的扩张主义 ,二战结束前美国的大国主义及蒋介石政府的集团利益驱动是分不开的。它是大国政治交易的结果 ,是苏美强权政治的产物