H*(A)中一族乘积元素（英文）

令A为模p Steenrod代数,证明了在A的上同调,也就是球谱的Adams谱序列的E2-项中,当p≥11,0s,p和n≥5时,乘积b0h0hnδs∈Exts+4,t(s)A(Z/p,Z/p)是非平凡的.其中t(s)=q[(s-2)+(s-1)p+(s-1)p2+sp3+pn]+s-4.     

球面稳定同伦群的一族新元素g_0(b_1)~2■_s

证明了在经典A dam s谱序列中,当p≥11,3≤s≤p-3时,g0(b1)2∈E x t6,A 2p2q p q 2q(H*V(2),Zp)在A dam s谱序列中收敛到π2p2q p q 2q-6V(2)的非零元,g0(b1)2s~γ∈E x t6A s,(s 2)p2q sp q sq (s-3)(Zp,Zp)在A dam s谱序列中收敛到(πs 2)p2q sp q sq-9S的非零元.     

Airy函数乘积的积分

本文提出对∫x~nA~(p)B~(q)dx型不定积分普遍方法,其中A、B都是含有参变量λ的Airy方程y~″=(λ x)y的解,p、q是微分阶数,n是非負整数。当p、q≤1,A与B所含的参数均不相同时,导出了上述积分普遍公式。当A=B时,文中提出了与Albright完全不相同的求积方法。     

｜A（G）｜=2^4p^2q的有限交换群G的构造

利用有限交换群G的自同构群A(G)的阶来刻划群G的结构,证明了当|A(G)|=24p2q(p,q是不同的奇素数)时,G至多有150型.     

关于(ap+1)/(a+1)的素因数

设a是大于1的正整,p是奇素数,A(a,p)=(ap 1)/(a 1)。文章证明了:当q=2p 1是素数时,如果a 1 0(modq)且(1/q)=-1,其中(a/q)是Legendre符号,则q是A(a,p)的素因数。     

拟南芥翻译延伸因子EF1A的亚细胞定位研究

探讨了拟南芥的翻译延伸因子EF1A的亚细胞定位.以Col野生型拟南芥的cDNA为模板,通过高保真KOD扩增酶获得2 363bp的拟南芥转录延伸因子EF1A基因片段,将其与GFP融合后共同连入p1300表达载体,利用农杆菌侵染法将p35S∶GFP和p35S∶EF1A∶∶GFP转入野生型拟南芥中,观察转基因植物细胞中GFP的表达情况.结果显示:p35S∶GFP转基因植物中,细胞核中GFP荧光强度显著高于细胞质中荧光强度,但是在p35S∶EF1A∶∶GFP转基因植物中,细胞核中荧光强度与细胞质中荧光强度无显著差异,说明在进行蛋白翻译时细胞质中的EF1A含量显著高于细胞核中,这也为翻译延伸因子EF1A的亚细胞定位提供了实验依据.     

一类半线性椭圆方程（组）整体大解的存在性

A．V．Lair,A．W．Wood（2000）和A．V．IJair（2010）的文章‘}1分别介绍了半线性椭圆方程／tu：P（｜x｜）u^α以及方程组Au=p（｜x｜）u^α,△v=q（｜X｜）v^β径向整体大解的存在性,其中P,q是R^n上的非负连续函数,0〈α,β≤1．笔者研究了参数满足条件d,p〈0时半线性椭圆方程／tu=p（｜x｜）u^α及相应方程组径向整体大解存在的充要条件,补充了α／〈0（或α,β〈0）时A．V．Lair,A．W．Wood（2000）和A．V．Lair（2010）的相应结果．     

g0(b1)2在Adams谱序列中收敛到π*V(1)的非零元

p≥11时,利用g0(b1)2∈Ext6,2p2q pq 2q A(H*V(2),Zp)在Adams谱序列中的收敛性证明了g0(b1)2∈Ext6,2p2q pq 2q A(H*V(1),Zp)在Adams谱序列中收敛到π2p2q pq 2q-6V(1)的非零元.     

一类非线性椭圆型方程弱解的-C1,α正则性

研究了非线性椭圆型方程-div(→A(x,▽u)+→f(x))=B(x,u,▽u),在可控增长条件|B(x,z,h)|≤∧1(|h|p(1-1/p*)+|z|p*-1+g(x))下,得到弱解的C1,α正则性,其中1＜p≤N.1＜p<N时,p*=Np/(N-p);p=N时,p*为任一正数.     

de Sitter空间中的类空子流形的整体拼挤定理

证明了若Mn是de Sitter空间snp+p(1)(p＞1)中具有平行平均曲率向量的紧致类空子流形,σ为Mn的第二基本形式长度的平方,γ和M分别表示Mn的等周常数和体积,则存在仅与n,γ,M有关的常数A,当(∫σn/2dV)2/n＜A时,Mn是全脐的;de Sitter空间Snp+p(1)(p＞1)中极大的紧致类空子流形必为全测地的.     

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).     

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.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.