关于广义Dedekind和与Lerch-zeta函数的混合均值

对于给定的正整数q,n和任意整数h,(h,q)=1,广义Dedekind和定义为S(h,n,q)=∑qa=1Bn(qa)Bn(hqa),其中Bn(x)是第n个周期Bernoulli多项式.利用DirichletL-函数L(s,χ)的均值性质研究广义Dedekind和与Lerch-zeta函数的混合均值分布性质,得到了一个有趣的渐进公式.     

单位超球B~n上的(p,q)格林形式(英文)

设g（z）是单位超球BnCn上具紧支集的可数（p,q）形式．构造了满足方程N＝g的（p,q）格林形式N（z,w）的显示表达式,其中是Bn上关于内蕴度量的Hodge对偶算子．这有助于求出单位超球Bn上关于内蕴度量的方程的解．     

单位球上Bloch型空间中复合算子的本性模估计

设Bn是n维复空间C^n中的单位球,φ=（φ1,…,φn）是Bn到自身的一个全纯映射,令P,q〉0,复合算子Cφ由（Cφf）（z）=f（φ（z））定义,通过找到一个性质很好的检验函数（见命题1）得到了单位球上p-Bloeh空间到q—Bloeh空间之间的有界复合算子Cφ的本性模的下界估计（具体结果见定理1）．     

Bn(3)型单群的谱刻画

群的全部元素的阶的集合称之为谱.利用素图的连接标准,对非连通的Bn(3)型单群进行了谱刻画,证明了任意与Bn(3)具有相同谱的有限群必然和Bn(3)同构(其中n>3),进一步验证了A.S.Kondratiev猜想.     

频率对稳定振动状态的影响

二阶振动方程可近似表示为二阶线性方程:x" p(t)x' q(t)x=h(t) (1)P,q,h皆为连续的T周期函数.p(t)>0,g(t)>0.在(1)式中:p(t)x'表示阻力;q(t)x表示恢复力;h(t)表示外力.(1)式化为方程组为:     

M矩阵Hadamard积的特征值的界

利用矩阵特征值包含域定理中系数的不同选择,以及非奇异M矩阵A的逆矩阵A-1的元素估计式的不同选择,得到了q(AA-1),q(BA-1)新的一些下界.这些估计式使得估计q(AA-1),q(BA-1)下界时的选择更加丰富.     

关于中心极限定理的余项与重对数律之间的关系的一个结果及其应用

设 {Xi,i≥ 1}为一独立随机变量序列 ,E(Xi) =0 ,D(Xi) =σ2 i <∞ ,Sn = ni=1Xi,Bn = ni=1σ2 i,Bn →∞ ,Bn/Bn+ 1→ 1.本文首先在Δn =supx｜P(Sn ≤x Bn) -Φ(x)｜=O((Ψ (x) ) - 1)的条件下证明了重对数律 .其中Φ(x)是标准正态分布的分布函数 ,Ψ (x)是对充分大的x有定义的正值非降函数 .满足∫+∞dxxΨ(x) <∞ .应用上述结果证明 ,对任意独立序列 {Xi,i≥ 1}若liminfBnn >0 ,limsup1n ni=1E(X2 iΨ1(｜Xi｜) <∞ ,则重对数律仍然成立 ,Ψ1(x)与上述Ψ(x)相似 ,但定义域为 [0 ,+∞ ) .     

Cn中单位球上加权Bloch空间上的复合算子

对于单复变情形, Bloch空间、小Bloch空间上的复合算子以及加权复合算子的研究已有很多结果.对于Cn中的单位球Bn,通过定义其上的加权Bloch空间Blog={f∈H(Bn):supz∈Bn(1-|z|)ln 2/1-|z| f(z)|< ∞},其中H(Bn)为单位球上全纯函数的全体,f(z)=( f/ z1,…, f/ zn)为f的梯度函数,作者刻画了此空间上的复合算子的有界性和紧性,并得到了充要条件.     

关于Lehmer DH问题及其推广

对奇数q≥3,设r(q)表示同余方程x·x≡1(modq),1≤x,x≤q—1且满足x和x具有相反奇偶性的解的个数。主要目的是给出r(q)的一种三角和表示式,从而推出r(q)的一个较强的渐近公式。     

E(q_1、q_2)类拟共形映照的近似表示与K(q_1、q_2)拟共形映照类中Белинский的极值定理

设q1(z),q2(z)是有界可测复函数,且|q1(z)| |q2(z)|≤q0<1。我们称方程(?)的广义正则解为K(q1、q2)类拟共形映照,此地、K=(1 q0)/(1-q0)。特别,若|q1(z)| |q2(z)|≤q0<ε<1时,称为ε(q1、q2)类拟共形映照。本文中,作者建立了全平面及单位圆上ε(q1、q2)类拟共形映照的近似表示式,并用之证明了K(q1、q2)类中的Белuнскuü极值定理。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

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.     

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.     

A computer generator for randomly layered structures

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

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

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。     

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.     

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

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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