一族单叶函数的对数系数

研究单叶函数的一个新子族S．，它是星像函数的拓广。得到S．中函数的对数系数的估计，并给出在系数估计上的应用。     

关于β型螺形函数的一类子族

在单位圆盘D内引入β型螺形函数及其一类子族,同时研究了(1)函数族Sβα中函数f(z)与函数族S*(α)中函数g(z)的一个重要关系式,Sβ,α中函f(z)二项系数的精确估计;(2)函数族Sβα中函f(x)的增长、掩盖定理.     

一类定义在特殊解析函数族上的积分算子

设S表示在单位圆D ={z :|z|<1}内单叶解析函数 f(z) =z +∑∞n =2 anzn 的全体组成的族 .引进S的一个新子族Aα(A ,B) ,对该族证明了函数 f(z)∈Aα(A ,B)当且仅当zf′(z) ∈Bα(A ,B) (Bazilevich函数 ) ,并研究了积分算子 .     

有关α螺旋形函数的一族解析函数

根据α螺旋形函数的定义引进D^λ映射定义一族解析函数Sα（λ，β），导出族中函数的积分表达式；研究了Sα（λ，β）中函数的某种积分运算及卷积定理。     

单叶复调和函数的二个子族

对单叶复调和星像函数的一个子族和单叶复调和凸像函数的一个子族进行了研究，得到了这两个族分别将任一原点为心的圆盘映成星像或凸像区域，还得到了系数估计，增长定量、覆盖半径等。     

关于β型螺形函数的一类子族的增长、掩盖定理和系数估计

在考虑零点阶数的情况下,研究了单位圆盘D上的β型螺形函数的一类子族Sβα族的增长、掩盖性质以及系数估计,所得结果推广了一些已知结论.     

关于一类积分算子的近凸性

讨论了解析函数子族S（m,M)的积分变换,相应地给出了一类近于凸积分算子的某些结果。     

娄威纳方程所确定的某些特殊函数

表示单位园盘|z|<1内的任一正则单叶函数,所有具有(1)的形式的单叶函数所构的族用S表示:f(z)(?)S、娄威纳(Lowner)曾用参数表示法建立了函数族S中的一个重要的子族,使得族S中的任一函数都可用此子族中的函数来逼近,他的主要理论包含在     

对称单叶函数系数序列相互增高的牵制

设 f_k(z)=z+∑~∞_(n=1)c~(k)_(kn+1)z~(kn+1)为园|z|<1内的一个 K 次对称正则单函数,S_k 表示其全体所成的族,特别当 K=1时 S_=S,即普通的正则单函数族。对于 S_k 中的函数,如映射圆|z|<1为凸区域时,称此函数为凸象函数,用 S~*_k 表示其全体所成的族。对于 S_k 中的函数,如映射圆|z|<1为星形区域时,称此函数为一星象函数,用 S~#_k 表示其全体所成之族。     

单叶函数渐近性质的一点注记

设函数在单位圆△:|Z|<1内解析单叶,记其全体为S.B.G.EKe[2]定义S的子族S(θ_1,θ_2,…,θ_k)如下:设f(Z)∈S,存在δ>0,C>0及一数列r_n→1 使     

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.     

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.     

A computer generator for randomly layered structures

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

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the