区间值直觉模糊子群

研究了区间直觉模糊子群,且引入了区间值直觉模糊正规子群概念,并利用集合套研究了区间值直觉模糊子群和区间值直觉模糊正规子群.     

亚纯函数微分单项式分担一个值的正规定则

运用Nevanlinna 值分布理论和正规族理论研究了亚纯函数微分单项式分担一个值的正规族问题, 得到了几个正规定则。     

Lahiri型正规定理

利用亚纯函数的值分布理论,对分担值的Lahiri型正规性进行研究.得到了1个正规定理,推广了先前的一些结果.     

T_H型区间值模糊正规子群的乘积与同态象定理

在群上的区间值模糊集空间上,引入幂等区间范数ＴＨ,定义了ＴＨ型区间值模糊集的乘积,在此基础上,研究了这种乘积在其模糊正规子群空间上的推广性质,给出了ＴＨ型区间值模糊正规子群的同态象定理．     

TH型空间值模糊正规子群的乘积与同态象定理

在群上的区间值模糊集空间上,引入幂等区间范数ＴＨ,定义了ＴＨ型区间值模糊集的乘积,在此基础上,研究了这种乘积在其模糊正规子群空间上的推广性质,给出了ＴＨ型空间值模糊正规子群的同态象定理。     

分担值与正规族

研究了与分担值有关的亚纯函数的正规性,并得到了相关的正规定则。正规族的理论是与函数取值的问题紧密地联系在一起,把亚纯函数正规族与分担值或分担函数结合起来考虑是亚纯函数正规族理论研究的一个重要课题。目前正规族理论在亚纯函数的唯一性、复解析动力系统和复微分方程等方面有着许多应用。利用Nevanlinna理论研究一类涉及分担值的亚纯函数族的正规性,应用Zalcman-Pang方法得到一个与分担值相关的正规定则。主要结果为:设F是单位圆盘Δ上的一族亚纯函数,a和b是任意两个非零有穷复数,k为正整数,若对任一f(z)∈F,有f(z)的零点重级至少为k+1,极点重级至少为2,且f~(k)(z)=a■|f(z)|≥b,则F在Δ上正规。     

关于算子值加权移位

本文主要研究了权序列为某一可分 Hilbert 空间上的有界线性算子列的算子值加权移位.证明了算子值加权位移是2—自反的.在一定条件下,证明了双侧亚正规算子值加权移位没有循环向量,最后,讨论了亚正规算子值加权移位本性谱的结构.     

正规矩阵的性质注记

借助正规矩阵的基本性质、特征和相关研究成果,并利用矩阵的特征值与奇异值的关系,获得了正规矩阵的一些等价条件和代数性质.     

涉及分担函数的两族正规性（英文）

研究了涉及分担函数的两族正规性,得到了两个定理.这些定理改进了叶亚盛,刘晓俊和庞学诚的关于分担值的两族正规性的相关结果.     

关于分担集合的亚纯函数的正规定则

从分担值集的角度出发,研究了亚纯函数的正规性,推广了前人的结果,得到了关于分担集合的亚纯函数正规性的一个结果。即：设n,6为两个判别的有穷复数,s={a,b},如果{f（κ）}中所有函数,f（κ）在D内以S为IM分担值集。则{f（κ）}在D内正规。     

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