类硼离子基态的非相对论能量及其相对论修正

导出了类硼离子基态非相对论能量的解析表达式,并利用变分法计算出类硼离子基态的非相对论能量值;利用不可约张量理论导出了类硼离子基态能量相对论修正项(包括相对论质量修正项、单体和双体达尔文修正项、自旋-自旋接触相互作用项)的解析表达式,在此基础上计算了类硼体系(Z=5～8)基态的总能量,计算结果与实验数据符合得较好.     

类锂体系1s22p2P态能量的相对论修正

利用不可约张量理论,导出了锂原子(含类锂离子)能量的相对论修正(包括相对论质量修正、达尔文修正、自旋-自旋接触相互作用和轨道-轨道相互作用)的解析表达式,在此基础上具体计算了类锂体系(Z=3→7)激发态1s22p 2P的总能量,所得计算结果与实验数据符合得较好.     

类铍体系基太以及低激发态能量的相对论修正

利用不可约张量理论,导出了铍原子(含类铍离子)能量的相对论修正(其中包括相对论质量修正、达尔文修正、自旋-自旋接触相互作用)的解析表达式,以此为基础,对于类铍体系(Z=4-8)基态(1s)22s2s1S以及低激发态(1s)22s2p3P分别完成角向、径向积分以及自旋求和,具体计算了这两个态的总能量,计算结果与实验数据符合得较好.     

类铍体系能量的相对论修正

对铍原子波函数包含多个Slater基函数的复杂情形,利用不可约张量理论导出了铍原子(含类铍离子)谱项能量的相对论修正(包括相对论质量修正、达尔文修正、自旋-自旋接触相互作用)的解析表达式,具体计算了类铍(Z=4～8)体系(1s)22s2p1P态和(1s)2(2p)21S态的总能量,计算结果与实验数据符合得较好.     

多电子原子塞曼哈密顿的球张量形式

利用不可约张量理论和角动量耦合理论,导出多电子原子塞曼哈密顿的球张量形式.这种形式使得塞曼哈密顿中每一项的径向、角向和自旋部分相互分离,便于在表象中计算塞曼哈密顿的矩阵元.     

类铍离子1s22s2p3P态精细结构的计算

利用不可约张量理论导出了类铍离子态精细结构(包括自旋-自旋、自旋-其它轨道以及轨道-轨道相互作用)的解析表达式,完成所有角向积分、自旋求和的计算,使类铍离子1s22s2p3P态精细结构能级最终可以表示为径向积分之和,从而得到了对应能级的精细结构的理论计算值,计算结果与实验观测值误差小于0.08%.     

夸克间微扰势的相对论性非微扰修正

计算了胶子凝聚与夸克凝聚对于微扰量子色动力学中克与夸克之间的相互作用的非微扰修正的相对论形成对论形式及其非相对论形式展开，由于超出了一般的非相对论近似，一些新形式的自旋－自旋相互作用项、自旋－轨道相互作用项出现在势的表达式中。     

Hubbard模型的局域方法三阶近似

应用局域方法近似对Hubbard模型作了三阶计算。考虑到同格点及相邻格点的电子和自旋相关,计算了相关能、基态能和局域磁矩,结果表明:在U和n较大时,三阶计算结果对保留项的二阶计算结果的修正比对略去项的二阶计算结果的修正小得多,从而说明,在二阶计算中项的贡献是重要的,不能略去。保留项的二阶计算结果可用于一般精度的计算。     

高自旋场对Schwarzschild黑洞熵的量子修正

利用brick-wall模型研究具有高自旋的引力场和电磁场对Schwaxzschild黑洞熵的量子修正．计算结果表明，除通常的正比于体积的一项外，量子修正项包括两部分：一项与视界面积成正比，另一项当Ξ→O时，呈现对数发散，这与标量场所得结果有所不同．     

一类改进的多电子原子波函数

提出了多电子原子波函数中ns电子径向函数的一种构造方法,在此基础上利用变分法对氦原子1sns(n=2-5)组态、铍原子1s22sns(n=3-6)组态、碳原子1s22s22pns3P(n=3-6)态的非相对论能量进行了计算,并计算了其相对论修正值(包括质量修正、单体达尔文修正、双体达尔文修正、自旋-自旋接触相互作用修正、轨道-轨道相互作用修正),计算结果与实验值相当接近.     

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.     

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.     

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)

正~~     

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).     

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.