序列空间上的相似算子与近相似算子

在给出序列空间上相似算子与近相似算子的等价条件后,探讨两者之间的关系,并得到新结论.     

双论域上基于Brouwer-正交补的粗糙近似

主要研究广义近似空间上粗糙近似算子的扩展模型.首先,将Cattaneo提出的抽象近似空间理论具体运用于广义近似空间中的粗糙集模型研究,利用空间中双论域间的二元关系,导出指定论域上的一个Brouwer-正交补算子,据此算子构造性地定义了指定论域上的两对粗糙近似算子.然后,研究了新算子的基本性质和代数表示,将它们与已有近似算子进行对比,指出它们的异同,给出它们之间的大小顺序关系.最后,研究了新近似算子和已有近似算子的等价性,给出它们与邻近算子之间等价的条件,讨论了等价条件之间的关系.     

关于弱同伦正则态射

本文在点标道路连通CW空间的同伦范畴中,引进了弱同伦正则态射的概念,研究了它存在的条件、性质以及它与弱同伦单(满)态和弱同伦等价之间的关系.     

一类捕食者- 食饵三次Kolmogorov脉冲系统正周期解的存在性

研究一类三次Kolmogorov脉冲系统正周期解的存在性, 通过在适当的Banach空间中引入算子, 将微分系统化为等价的算子方程; 利用重合度的同伦不变性证明了所引入的算子满足重合度理论中连续性定理的条件, 并建立了存在正周期解的充分条件, 推广并改进了一些相关结果.     

拟代数Domain的若干性质

基于拟连续Domain的等价定义及其构造，研究了拟代数Domain的一系列性质，并且给出了它的等价刻画，由此得到拟代数Domain一定是拟连续Domain．通过讨论Scott连续闭包算子保持集合与集合之间的Waybelow关系这一特性，证明了拟代数Domain在Scott连续闭包算子下的像仍是拟代数Domain；得到了拟代数Domain上赋予Scott拓扑构成Baire空间，拟代数格上赋予Lawson拓扑构成Priestley空间等结论．     

严格循环算子代数上的拓扑

一般算子代数上的强拓扑和范数拓扑不一致,范数拓扑强于强拓扑。本文证明,对于Banach空间上的严格循环算子代数而言,其上的这两种拓扑却是等价的。     

M-纤维式同伦扩张及其应用

着重研究了M-纤维式范畴中的同伦论相关概念, 即M-纤维式同伦扩张性质. 通过M-纤维式收缩以及M-纤维式形变收缩的概念，给出了M-纤维式同伦扩张性质的等价描述，从而推广了一般拓扑范畴中同伦扩张性质的相关等价描述. 另外，证明了在M-纤维式范畴中的一些空间构造，如M-纤维式贴附空间的同伦不变形性. 最后, 对于2个M-纤维式映射是否同伦等价的问题，通过M-纤维式映射柱的概念给出了相关的判定定理，这一判定是一般拓扑范畴中两映射是否同伦等价的判定的自然推广.     

一类非自治n种群互惠系统的周期正解

研究了一类具有周期系数互惠的n种群微分系统.在适当的Banach空间中引入算子,将微分系统化为等价的算子方程;利用Arzela-Ascoli及重合度的同伦不变性质,证明了所引入的算子满足重合度延拓定理的条件,从而证明了系统周期解的存在性,并给出解的估计.     

Banach空间中度量投影算子的性质

本文在一定的Banach几何框架下讨论了度量投影算子的若干性质．先利用对偶映射给出了投影算子的几个等价条件，然后利用等价条件讨论了自反、光滑、严格凸Banach空间中度量投影算子的线性性质和投影算子在凸闭子集中的方向导效等性质．     

有限秩算子及n-自反性

主要工作：（１）设Ｓ是向量空间Ｖ上的有限维线性算子空间，ＳＦ表示Ｓ中全体有限秩算子，则Ｓ是ｎ＿代数自反的等价于ＳＦ是ｎ＿代数自反的；（２）Ｓ是Ｂａｎａｃｈ空间Ｘ上的连续线性算子空间，当Ｓ满足一定条件时，Ｓ是ｎ＿拓扑代数自反的等价于ＳＦ是ｎ＿拓扑代数自反的     

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.     

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.     

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.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-