关于遗传弱次亚紧和弱次亚紧的Tychonoff乘积性质

本文主要获得下列三个Ｔｙｃｈｏｎｏｆ乘积定理：（１）设Ｘ＝∏ｉ＜ωＸｉ,若ｎ＜ω,∏ｉ＜ｎＸｉ是遗传弱次亚紧空间,则Ｘ是遗传弱次亚紧的;（２）设Ｘ是遗传弱次亚紧空间且Ｙ具有σ－不相交基,则Ｘ×Ｙ是遗传弱次亚紧的;（３）若Ｘ是弱次亚紧的Ｐ－空间且Ｙ具有σ－点有限基,则Ｘ×Ｙ是弱次亚紧空间．     

关于遗传超仿紧空间的Tychonoff乘积性质

本文主要证明：（1）如果∏σ∈∑Xσ是遗传｜∑｜-超仿紧空间,则X是遗传超仿紧空间当且仅当А↓F∈∑,∏σ∈FXσ以是遗传超仿紧空间．（2）设x=∏σ∈∑Xσ以是遗传可数超仿紧空间,则下列三条等价：X是遗传超仿紧空间;А↓F∈[ω]^〈ω,∏i∈FXi是遗传超仿紧空间;А↓n∈ω,∏isnXi是遗传超仿紧空间．     

S－仿紧空间与可数S－仿紧空间

拓扑空间（Ｘ，Ｊ）称为可数Ｓ－仿紧空间，如果对Ｘ的每个可数正则闭复盖，都存在一个局部有限的正则闭加细．给出了（可数）Ｓ－仿紧空间的一些刻划．１°空间（Ｘ，Ｊ）是（可数）Ｓ－仿紧空间的充要条件是对于每个（可数）正则闭复盖Ｕ，都存在一个局部有限加细．２°设（Ｘ，Ｊ）是（可数）Ｓ－仿紧空间，则存在正则开子空间是（可数）Ｓ－仿紧空间．３°设（Ｘ，Ｊ）是拓扑空间，Ｘ的每个局部有限闭复盖都有一个局部有限正则闭加细     

关于Dσ-空间和局部ω△-空间的某些结论

证明了次亚紧局部ω△┐空间是ω△┐空间；仿紧（Ｍ－空间）－散布空间是Ｄ－空间；强∑－空间是Ｄσ－空间；仿紧Ｃ散布空间是Ｄ－空间．     

强次亚紧和遗传次亚紧的σ—积

主要获得如下两个定理：１）设Ｘ＝σ｛Ｘα：α∈Ａ｝，如果Ｘ的每个有限子积是强盗人亚紧的，则Ｘ是强次亚紧的。（２）设Ｘ＝σ｛Ｘα：α∈Ａ｝，如果Ｘ的每个有限子积是遗传次亚紧的且Ｘ正规，则Ｘ是遗传次亚紧的。其次，证明了次ｏｒｔｈｏ紧空间不具有类似于（１）的性质。     

逆极限的超仿紧性

本研究得到如下结果：设Ｘ是逆系统（Ｘａ，πβ＾α，Λ）的极限，│Λ│＝λ，假设每个投射πａ；Ｘ→Ｘａ是开且到上的，Ｘ是λ－超仿紧的，如果每个Ｘα是超仿紧的，则Ｘ是超仿紧的，进一步还要得到遗传超仿紧的类似结果。     

弱于可数紧性的性质

讨论了弱于可数紧性的若干性质，主要结果是：空间Ｘ是可数紧的当且仅当Ｘ是闭遗传星紧的；空间Ｘ是紧的当且仅当Ｘ是仿紧且ｄｆｃｃ的．     

关于J.C.Smith的一个问题和仿紧性的一些刻画

本文的主要结果之一是：可数亚紧的弱θ可加细空间是狭义拟仿紧的，作者在一定分离性分理的下给出了仿紧空间的一个刻画，即；正则拓年空间Ｘ仿紧的充要条件是Ｘ是σ－离散Ｈ，Ｃ可膨胀的狭义次拟仿紧空间。本文还对序列空间中 仿肾性作了一些讨论。．     

Lindelof空间与（d—）仿紧（亚紧）空间的乘积

证明了可展的Ｌｉｎｄｅｌｏｆ空间与ｄ－仿紧的Ｐ空间的积是ｄ－仿紧的，Ｌｉｎｄｅｌｏｆ空间与仿紧（亚紧）的Ｐ空间之积是仿紧（亚紧）的，改进了Ｔａｍａｎｏ定理和已有文献的结果。     

D－空间的某些充分条件

证明了（Ｄ－空间）－ｌｉｋｅ空间是Ｄ－空间，从而得到定理：若Ｘ是弱可加细且（Ｓ（Ｄ－空间）－ｌｉｋｅ空间，则Ｘ是Ｄ－空间．因此有推论：亚紧且紧－散布空间Ｘ是Ｄ－空间，同时讨论了Ｄ－空间．     

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-