集值鞅与拟鞅以及L~1-极限鞅关系定理

讨论了集值鞅、集值拟集、集值Ｌ１－极限鞅之间的关系,得到了集值鞅集值拟鞅集值Ｌ１－极限鞅,而集值Ｌ１－极限鞅可用集值鞅逼近,以及集值Ｌ１－极限鞅存在集值拟鞅子列等关系定理     

曲面上法曲率的最值和最值切方向的性质

考虑曲面上法曲率最值和最值切方向的直接求法问题,给出了直接的导出方法,得到最值和最值切向量的特征值、特征向量的性质和2最值切向量的正交共轭性质.     

亚纯函数的例外值

主要介绍亚纯函数的Picard例外值、Borel例外值、Nevanlinna例外值和Valiron例外值.在此基础上提出两个新的例外值和待解决的问题,并且比较系统地总结了这些例外值集之间的相互关系.     

福建生态经济系统的能值分析及可持续发展评估

运用能值理论与方法,对福建省1981-2004年的净能值产出率、能值投入率、人均能值用量、能值货币比率、能值使用强度、电力能值使用量比例、环境负荷率、可持续发展能值指数和人口承载量等9个指标24年来的变化趋势进行了分析,并对各项能值指标2010年的数值进行了预测.结果表明:(1)24年来福建的能值投入率、人均能值用量、能值使用强度、电力能值使用比例不断上升,能值货币比率则持续下降,表明福建省经济得到了巨大的发展;(2)24年来福建省净能值产出率、可持续发展能值指数不断下降,环境负荷率不断升高,说明福建经济的发展是以资源大量消耗和环境破坏为代价而取得的;(3)按各项能值指标的变化趋势曲线对2010年福建省各项能值指标预测表明,若按以往发展模式,福建省产品竞争力将下降,资源环境压力过大,生态经济系统的功能将退化或散失.     

具有模糊联盟值的n人合作博弈的模糊Shapley值

利用模糊集表现定理对具有模糊联盟值的n人合作博弈的模糊Shapley值重新进行研究.定义了具有模糊联盟值的n人合作博弈的α-博弈,并给出了其Shapley值定义及表达式.通过研究所有α-博弈的Shapley值之间的关系,验证了所有α-博弈的Shapley值构成一个集合套.利用模糊集表现定理和α-博弈Shapley值,定义了具有模糊联盟值的n人合作博弈的模糊Shapley值.实例研究表明,具有模糊联盟值的n人合作博弈的模糊Shapley值的有效性.     

灌浆料回弹值与抗压强度关系的实验研究

利用回弹法履万能材料试验机压斌块法对灌浆料的强度值进行对比，结果显示，压斌块法测得强度值远远大于回弹法，具体关系为，未加豆石，灌浆料抗压强度值为回弹值的2.58倍，加入豆石后，其抗压强度值为回弹值的2.12倍，说明，加了粗骨料后，回弹值与抗压强度值差距在缩小。     

基于改进集的集值Ekeland变分原理的等价性

根据各种Ekeland变分原理的等价形式,主要研究具有改进集的集值Ekeland变分原理的等价性。首先利用具有改进集的集值Ekeland变分原理证明了集值Caristi-Kirk不动点定理,集值Takahashi非凸极小化定理和集值Oettli-Théra定理。进一步研究具有改进集的集值Ekeland变分原理、集值Caristi-Kirk不动点定理、集值Takahashi非凸极小化定理和集值Oettli-Théra定理的等价性。     

畜禽预期综合选择指数制定原理及其应用研究

阐述了预期综合选择指数的制定原理，其中包括表型通径分析、遗传通径分析和表型遗传通径分析的原理；建立利用早期性状表型值预测晚期性状表型值和育种值以及利用早期性状育种值预测晚期性状育种值的“最优”回归方程的原理；利用预测的表型值和育种值分别制定预期表型值和预期育种值综合选择指数的原理；得出了预期育种值综合选择指数遗传进展的计算公式。制定了凉山４８～５０支半细毛羊母羊的预期综合选择指数。结果表明，预期表型值和预期育种值综合性选择指数的综合育种值进展量分别为独立淘汰法的１．２３０和１．４６４倍。研究结果提示；预期综合选择指数制定原理可用于畜禽早期选种工作中的研究，以提高早期选种的准确性和综合育种值进展量。     

基于差别矩阵的区间值形式背景属性约简

目的在形式概念分析理论框架下,研究区间值形式背景的属性约简。方法给出区间值属性集差别矩阵和区间值形式背景属性约简的定义,并研究相关性质;研究协调区间值属性集的判定定理。结果给出协调区间值属性集的判定定理,以及基于区间值属性集差别矩阵的区间值形式背景约简方法。结论区间值形式背景可进行属性约简。     

一类集值映射在迭代下集值点个数不增的条件

集值点个数的增加是集值映射迭代之所以复杂的根本原因.本文研究一类只有一个集值点的集值映射的迭代,给出这类映射在迭代下集值点个数不增加的条件.     

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.     

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…     

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     

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.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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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。     

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.     

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