逆极限空间转移映射非游荡集的中心测度

证明了关于X的逆极限空间的转移映射具有下述结论:转移映射的强非游荡点集等于映射f的强非游荡点集的逆极限空间;f在测度中心上为非游荡点集,当且仅当转移映射的测度映射在其测度中心为非游荡点集;f在测度中心上为强非游荡点集,当且仅当转移映射的测度映射在其测度中心为强非游荡点集.     

关于逆极限空间转移映射的某些性质

证明了关于Ｘ的逆极限空间的转移映射具有下述结论：①转移映射的弱几乎周期点集等于映射ｆ的弱几乎周期点集的逆极限空间,类似的结论对拟弱几乎周期点集,一致几乎周期点集,测度中心和极小吸引中心也成立;②ｆ在测度中心上为Ｓｃｈｗｅｉｚｅｒ－Ｓｍｉｔａｌ混沌的．当且仅当转移映射在其测度中心上为Ｓｃｈｗｅｉｚｅｒ－Ｓｍｉｔａｌ混沌的,文后,举出了实例．     

弱Specification性质与不变概率测度

对紧致度量空间上连续自映射,研究了弱Specification性质与不变概率测度之间的关系,证明了具有弱Specification性质的系统一定存在f:X→X的不变概率测度m,使得Suppm=X,并且f:X→X有满测度中心,即M(f)=X.     

华沙圈上的一些动力学性质

设W为一个华沙圈,f为W到其自身的连续自映射,本文主要研究f的一些动力学性质,首先证明了f是传递的当且仅当f是D evaney混沌;其次证明了逐点回归映射是恒等映射;最后,得到华沙圈上拓扑序列熵具有交换性.     

圆周自映射的混沌与伪轨跟踪性质(英文)

设f:S1 →S1 是圆周S1 上的连续自映射 ,本文证明 :如果f是 2 ∞ 型的混沌映射 ,那么f不具有伪轨跟踪性质     

关于强跟踪性的注记

研究了紧度量空间X上的连续映射的强跟踪性质,证明了如下结论:①若X上的连续映射f具有强跟踪性质,则由(X,f)生成的逆极限空间上的转移同胚σf也具有强跟踪性质;②若f是X上的同胚映射,fσ具有强跟踪性质,则f具有强跟踪性质.另外,还给出了强跟踪性质的一个性质.     

混沌与拓扑半共轭

（X,f）与（Y,g）为拓扑动力系统,f与g是拓扑半共轭的,对基于拓扑半共轭特殊性质扩充的混沌性进行了探讨,作为应用,给出了区间映射拓扑熵大于0与几乎周期点集中有不可数混沌集是等价的一个新的证明。     

双重逆极限空间上移位映射的Martelli混沌

讨论双重逆极限空间上移位映射的一个动力性质,证明σf∧σg是Martelli混沌的,当且仅当f∧g是Martelli混沌的.     

Banach空间上的几乎周期性与混沌性

设（x,‖·‖）是Banach空间,f：x→x是连续Frechet可微的映射。对（x,f）的混沌性进行了探讨,证明存在紧致子集ACA（f）使得fA是Xiong-混沌的和Kato混沌的。     

Scott连续自映射不动点集的性质研究

主要研究了一些连续domain上Scott连续自映射的不动点集的性质．证明了若L是双有限domain,f：L→L是一致交换映射,则Fix（f）是双有限domain;提出了连续cpo上不动点集的一个例子;并证明了若L是有界完备domain,f：L→L是稳定映射且max（L）CFix（f）,则Fix（f）是L的收缩等性质．     

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-