女性新生儿血红蛋白正常参考值与中国地理因素

为制定中国女性新生儿血红蛋白正常参考值的统一标准提供科学依据,收集了中国85个单位用氰化高铁血红蛋白(HiCN)法测定的5231例女性新生儿血红蛋白正常参考值.运用相关分析和回归分析的方法,研究了其与地理因素的关系.发现女性新生儿血红蛋白正常参考值与中国地理因素之间有显著相关关系(F=23.51).用逐步回归分析方法推导出了回归方程:Y∧=182.8 0.01471X1-0.008858X5±30.0.如果知道了某地区的地理因素,就可用回归方程估算这个地区的血红蛋白正常参考值.依据血红蛋白正常参考值与地理因素的依赖关系把中国分为青藏区、西南区、西北区、东南区、华北区、东北区等6个区.     

青春期女性血红蛋白正常参考值与中国地理因素

收集了中国76个单位用氰化高铁血红蛋白(HiCN)法测定的11 792例青春期女性血红蛋白正常参考值,运用相关分析和回归分析的方法,研究了其与地理因素的关系,发现青春期女性血红蛋白正常参考值与中国地理因素之间有很显著的相关关系(F=85.40).用逐步回归分析的方法推导出了一个回归方程:Y∧=120.7 0.005554X1 0.2460X3-0.8110X4±11.4如果知道了中国某地的地理因素,就可以用回归方程估算这个地区的血红蛋白正常参考值.依据血红蛋白正常参考值与地理因素的依赖关系把中国分为青藏区、西南区、西北区、东南区、华北区、东北区等六个区.     

我国中年女性血红蛋白的正常参考值与地理因素关系的研究

为制定中国中年女性血红蛋白正常参考值的统一标准提供科学依据.收集了中国268个单位用氰化高铁血红蛋白(HiCN)法测定的25917例中年女性血红蛋白正常参考值,运用相关分析和回归分析的方法,研究了其与地理因素的关系.结果发现中年女性血红蛋白正常参考值与中国地理因素之间有很显著的相关关系(F=212.88).用逐步回归分析的方法推导出了一个回归方程.根据中国某地的地理因素,用回归方程可以估算这个地区的血红蛋白正常参考值.依据血红蛋白正常参考值与地理因素的依赖关系把中国分为青藏区、西南区、西北区、东南区、华北区、东北区等六个区.     

老年前期女性血红蛋白正常值与地理因素关系

为制定中国老年前期女性血红蛋白正常参考值的统一标准提供科学依据，章收集了中国161个单位用氰化高铁血红蛋白(HiCN)法测定的17019例老年前期女性血红蛋白正常参考值，运用相关分析和回归分析的方法，研究了其与地理因素的关系，发现老年前期女性血红蛋白正常参考值与中国地理因素之间有很显的相关关系(F=123．03)。用逐步回归分析的方法得出回归方程：^Y=91．8 0．007540X1 0．005186X2 0．4540X3-0．63504，Y的预测区间为[^Y-15.7，^Y 15．7]。如果知道了中国某地的地理因素，就可以用回归方程估算这个地区的血红蛋白正常参考值．依据血红蛋白正常参考值与地理因素的依赖关系把中国分为青藏区、西南区、西北区、东南区、华北区、东北区等六个区。     

幼儿前期女性血红蛋白正常参考值与中国地理因素

为制定中国幼儿前期女性血红蛋白正常参考值的统一标准提供科学依据,收集中国43个单位用氰化高铁血红蛋白(H iCN)法测定的4733例幼儿前期女性血红蛋白正常参考值,运用相关分析和回归分析的方法,研究了其与地理因素的关系。结果发现幼儿前期女性血红蛋白正常参考值与中国地理因素之间有很显著的相关关系(F=12.16),并用逐步回归分析的方法推导出了一个回归方程Y^=127.4+0.007157X1-0.004071X2-0.004542X5±14.8据此,如果知道了中国某地的地理因素,就可以用该方程估算这个地区的血红蛋白正常参考值。(依据血红蛋白正常参考值与地理因素的依赖关系把中国分为青藏区、西南区、西北区、东南区、华北区、东北区等六个区)。     

幼儿前期女性红细胞计数正常参考值的地理分布规律

为制定中国幼儿前期女性红细胞计数正常参考值的统一标准提供科学依据,收集了中国36个单位用显微镜计数法测定的6406例幼儿前期女性红细胞计数正常参考值,运用相关分析和回归分析的方法,研究了其与八个地理因素的关系.发现幼儿前期女性红细胞计数正常参考值与中国地理因素之间有很显著的相关关系(F=25.92,P=0.000).用逐步回归分析的方法推导出了一个回归方程:∧Y=2.390 0.0003248X1 0.008563X3 0.02051X6±0.41.如果知道了中国某地的地理因素,就可以用回归方程计算这个地区的幼儿前期女性红细胞计数正常参考值.依据幼儿前期女性红细胞计数正常参考值与地理因素的依赖关系,把中国分为八个区.     

青春期女性用力肺活量正常参考值与地理环境的关系

为制定中国青春期女性用力肺活量正常参考值的统一标准提供科学依据,收集了中国53个单位测定的7 094例青春期女性用力肺活量正常参考值,应用SPSS统计软件,运用相关分析和回归分析的方法,研究了其与8项地理因素指标的关系.发现青春期女性用力肺活量正常参考值与中国地理因素之间有很显著的相关关系(F=7.371,P=0.000).用逐步回归分析的方法推导出了一个回归方程:Y=8.751-0.0005089 X1-0.1232 X4-0.1184 X5-0.01537 X6±0.269.在以上的回归方程中,Y是青春期女性用力肺活量正常参考值(L),X1是海拔高度(m),X4是年平均气温(℃),X5是气温年较差(℃),X6是年平均相对湿度(%);0.269是剩余标准差的值.得出结论:如果知道了中国某地的地理因素,就可以用回归方程计算这个地区的青春期女性用力肺活量正常参考值.依据青春期女性用力肺活量正常参考值与地理因素的依赖关系,把中国分为8个区.     

中国健康女性最大通气量正常参考值的地理环境分布规律

为制定中国健康女性最大通气量（MVV）正常参考值的统一标准提供科学依据，收集了中国39个单位测定的3053例健康女性最大通气量正常参考值，应用SPSS统计软件，运用相关分析和回归分析的方法，研究其与8项地理环境要素的关系．结果发现健康女性最大通气量正常参考值与中国地理环境要素有显著的相关关系，并用逐步回归分析的方法推导出了回归方程．结论为如果知道了中国某地的地理环境要素数值，就可以用回归方程计算出该地的健康女性最大通气量正常参考值．依据健康女性最大通气量正常参考值与地理环境要素的依赖关系，把中国划分为东北、华北、晋陕内蒙古、长江中下游、东南、西北、西南、青藏8个区．     

青年男性血沉正常参考值与地理因素的关系

为制定青年男性血沉正常参考值的统一标准提供科学依据．收集了中国157个单位甩温氏法测定的12180例健康青年男性血沉正常参考值．运用偏相关分析的方法，研究了其与地理因素的关系．发现海拔高度是影响青年男性血沉正常参考值最主要的因素，随着海拔高度的逐渐增大，青年男性血沉正常参考值在逐渐的减小，相关性极显．用主成分分析的方法提取了两个主成分z1和z2，它们能较全面的反映所有变量的信息．用青年男性血沉正常参考值对这两个主成分进行回归分析，得到回归方程：^Y=3.68-0.0009201X1 0.005251X2 0.05234X3 0.1038X4 0．0005743X5。如果知道了中国某地的地理因素，就可以用回归方程估算这个地区的青年男性血沉正常参考值．依据青年男性血沉正常参考值与地理因素的关系把中国分为青藏区，西南区，西北区，东南区，华北区，东北区等6个区。     

中年男性血红蛋白参考值与中国地理因素分析

目的 为制定中国中年男性血红蛋白正常参考值的统一标准提供科学依据.方法 收集了中国299个单位的35 815例中年男性血红蛋白正常参考值;再运用偏相关分析和主成分回归分析方法 .研究了其与地理因素的关系.结果 通过偏相关分析发现海拔高度是影响中年男性血红蛋白正常参考值的最主要因素,随着海拔高度的逐渐增加,中年男性血红蛋白正常参考值也相应逐渐增大,偏相关系数ry1,2345=0.486 6,相关性很显著.用主成分回归分析的方法 推导出了一个回归方程.结论 实证分析说明,若已知一个区域的海拔高度、年日照时数、年平均相对湿度、年平均气温、年降水量等,用偏相关分析和主成分回归分析的方法 可以估算一个区域的中年男性血红蛋白正常参考值.     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

英文诗歌中的喻类修辞

为了有助于提高英文爱好者的个人情操、文化素养和学习兴趣,以及专业人员对英语学习和研究进行多途径的探索,本文通过一些精选诗歌的引证和分析,着重论述了喻类修辞法在英文诗歌中的运用其及效果。     

Man Is Unable to Change the Miserable Life——Analysis of the Arrangement of Four Characters in The Glass Menagerie

Tennessee Williams is considered as one of the most important American playwrights since World War II.The Glass Menagerie is his first successful drama,which describes a tragic situation of family and means to say that Man is unable to change the miserable life,no matter whatever means he try,This essay focuses on the analysis of the arrangement of the four main characters:Laura.Amanda,Jim and Tom to reveal the theme.Laura is fragile.Amanda is brave.Jim is vital.Tom is sensible.And all of them develop and try the different means to struggle against life,but fail tragically.With the evidence,the paper comes to conclusion naturally that Man is unable to change the miserable life,and he dooms to fail.     

Characterization of root-nodulating bacteria on Retama raetam in arid Tunisian soils

The aim of this study is to investigate the diversity of Retama raetam root-nodule bacteria isolated from arid regions of Tunisia. Twelve isolates, chosen as representative for different 16S rRNA gene patterns, were characterized by 16S rRNA gene sequencing and phenotypic analysis. Isolates were assigned to Sinorhizobium, Rhizobium and Agrobacterium. Symbiotic properties of Sinorhizobium and Rhizobium isolates showed a large diversity in their capacity to infect their host plant and fix atmospheric nitrogen. Strain RK 22 identified as Rhizobium was the most effective isolate.     

Features of Women''s language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Affordable Accurate Evaluation of the Binding Conformations Predicted by Molecular Docking Studies in Bio-System

正Recently,docking has been widely used to predict the binding-modes of protein-inhibitors,when the crystal complexes structure was absent.Most docking algorithms are able to generate a large number of probable conformations,it,however,is difficult to effectively evaluate these docking poses and identify the most reasonable bindingmode.In the present study,on the basis of the crystallographic data of human 3-hydroxy-3-methylglutaryl coenzyme