共线性在多元二次多项式回归模型中的危害及其处理方法

以1个均匀设计应用的实例为对象，回归分析得到2个多元二次多项式方程，（1）Y=0.084826＋0.23179X3—0.050286X2X3＋0.028422X1X3—0.0013962X2X2；(2)Y=0.062320＋0.2511X3—0.0600X3X3＋0.02347X1X3。对这2个方程进行线性变换处理后，用SPSS软件包进行共线性诊断分析，得出方程（1）第4项和第2项存在强烈的共线性关系，共线性的存在使方程的预测变得不可靠；方程（2）没有共线性存在，可以正确指导科研工作。     

宜昌市城镇建设用地需求量预测与分析

为了探讨城镇建设用地的规划预测值与实际需求量的一致性,利用宜昌市1996-2004 年土地利用变更数据和社会经济统计资料进行了关联度分析,并结合该市国民经济和社会发展的中、长期规划目标,预测了2010-2020 年城镇建设用地的需求量.结果表明,城镇人口、固定资产投资总额和工业总产值等3个因素是驱动城镇建设用地增长的主要因子,其权重分别为0.404、0.316和0.280,预测到2010、2015和2020年,比规划基期(2004年)累积增加城镇建设用地面积742.36、1 673.12和2 857.43 hm2,其预测结果可为制定宜昌市城镇建设规划提供依据.     

树莓组织培养与快繁技术研究

以树莓的顶芽和茎段为外植体进行了离体培养，筛选出最佳培养基：（1）腋芽诱导培养基为MS＋6-BA0．5＋TDZ0．3＋NAA0．1；（2）试管苗增殖培养基为MS＋6-BA0．5＋TDZ0．1＋NAA0．1；（3）生根培养基为MS＋NAA0．4。     

凸函数的一个性质的推广

设φ：S→2^Y是非空凸集S包含X上的集值映射．如果存在λ0∈（0,1）使得λ0φ（X1）＋（1-λ0）φ（X2）-φ（λ0X1＋（1-λ0）X2）∈K,任意X1,2∈S那么T：={λ∈[0，1]：λφ（X1）＋（1-λ）φ（X2）-φ（λX1＋（1-λ）X2）∈K,任意X1,X2∈S}在[0，1]上稠密．     

分子电距矢量用于氯代苯类化合物毒性的预测

通过对18个氯苯类化合物的分子电距矢量（MEDV）与其分子毒性关系进行关联，建立多元线性回归方程：-lgIC50=3．3377＋3．2080v1＋1．1453v2—0．5353v3—0．0571v6＋0．3118v8，R为0．9420．随后采用留一法（LOO）交叉检验（CV）、内部模型验证法对其进行了验证，结果表明，该模型具有良好的稳定性和预测能力，在一定程度上阐明了氯苯类化合物与其分子电性距离矢量之间的关系．     

昆嵛山萱草属(Hemerocallis L.)植物的核型及其染色体变异研究

研究了两种来自昆嵛山萱草属（Hemerocallis）植物的染色体数目、核型，结果表明：黄花莱（H．citrina）的体细胞中期染色体核型为2n=2X=22=16m＋4sm＋2T。核型不对称系数为58．9％，染色体相对长度组成为2n=2X=22=6L＋10M1＋6S。染色体总体积为105．39μm^3；对于北萱草（Hesculenta），以上各项则分别为2n=2X=22=20m＋2T、53．8％、2n=2X=22=4L＋2M2＋14M1＋2S和99．43μm^3．同时对染色体的性状进行了巢式方差分析，表明居群内个体间、细胞间染色体的形态和大小具有一定程度的变异。且居群内的变异主要来自于个体间．     

丽格海棠的组织培养与快速繁殖研究

以丽格海棠的茎状、叶柄、叶片为外植体进行组织培养。最佳培养基：（1）诱导培养基MS＋6－BA4．0mg/L(单位下同）＋IBA1．0；（2）增殖培养基MS＋6－BA0．5＋IAA0．2；（3）生根培养基MS＋NAA0．2．生根壮苗培养50d左右，经移栽，成活率达92％左右。     

锂快离子导体Li1+2x+2yAlxMgyTi2-x-ySixP3-xO12系统的合成与表征

以LiTi2（PO4）3为基，用分析纯原料经高温固相反应（～900℃）制得一系列锂快离子导体材料Li1＋2x＋2yAlxMgyTi2-x-ySixP3-xO12（以下简称Ti—Mg—Lisicon）．系统的合成温度随x和y的增大而降低．应用交流阻抗技术测定的电导率数据结果表明x=0．1，y=0．1的合成物室温电导率最好为1．31×10^-4S／cm，而673K时x=0．1，y=0．3的合成物的电导率最大，为2．93×10^-2S／cm．X射线衍射分析结果表明在x=0．1，y≤0．7；x=0．2，y≤0．6的组成范围内均得到空间群为R3C的合成物.     

Zn-Ce共掺杂Bao．2Sr0．8TiO3陶瓷结构及介电性能的研究

采用固相反应方法制备了系列Znce共掺杂Bao．2Sr0．8TiO3陶瓷材料,用X射线衍射（XRD）、扫描电子显微镜（SEM）和变温变频介电谱方法,对它们的微观结构和复介电常数进行了测量．结果表明,Zn^2＋、Ce^4＋的掺入,没有改变陶瓷试样的晶相结构,形成了均匀的固溶体．在1Hz测得的介电性能结果表明,随着Ce^4＋掺杂量的增加,介电常数实部ε′逐渐增大,介电损耗tan占逐渐减小,介电常数峰明显减弱,并有逐渐变宽的趋势,呈现明显的相变弥散效应特征．当掺杂量Zn^2＋为0．03864mol,C^4＋为0．06mol时,陶瓷试样的介电损耗最小,为1．75×10^-3（1Hz）．     

Li3V2（PO4）3掺镍的性能研究

摘要：采用溶胶凝胶法制备了锂离子电池正极材料Li3＋xNixV2-x（PO4）3（x=0、0．05、0．10、0．20）．通过XRD和SEM图谱对材料的结构及表面形貌进行了表征，结果表明Li3＋xNixV2-x（PO4）3与Li3V2（PO4）3具有相同的结构，均属单斜晶系P2 1／n，掺杂后样品的颗粒随着Ni含量的增加而变大．循环伏安和充放电测试表明，随着Ni含量的增加，Li3＋xNixV2-x（PO4）3的充放电容量降低，循环性能也变差，说明掺杂后样品的电化学性能变差．     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

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.     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.