三角形不等式判定程序agl2009的改进及应用

从8个方面对三角形不等式判定程序agl2009进行了改进和补充,使改进后的程序能够处理更多类型的不等式;针对传统不等式证明器只对给定不等式判定的不足,给出了批量发现非平凡不等式的应用实例;提出了若干形式新颖的不等式猜想.     

四边形不等式的自动发现

对圆内接四边形和双圆四边形不等式的自动发现进行了探讨,并编写了应用程序;讨论了圆内接四边形不等式与双圆四边形不等式的区别和联系;初步探讨了圆内接四边形不等式的证明方法;发现了大量新颖优美的圆内接四边形不等式和双圆四边形不等式新结果;提出了若干待解决的问题.     

关于Archbold不等式

利用改进的 Cauchy- Schwarz 不等式,得到了 Archbold 不等式的一个很强的结果, 且通过引入一个权系数ω_k( ω_k≠0, k= 1, …, n) ,对 Archbold 不等式进行了推广, 建立了一个新的不等式.     

锐角三角形几何不等式的差分代换证法及应用程序

对用差分代换方法研究三角形不等式进行了新的探讨;给出了锐角三角形几何不等式的一种判定算法和Maple应用程序agl;指出agl程序在验证和发现一类根式型三角形不等式方面,性能优于Bottema软件;讨论了三角形不等式的有理化方法;提出了待解决的问题。     

等腰取等三角形几何不等式研究的若干新结果

回顾了等腰取等不等式的研究发展过程;提出了等腰取等量并详细讨论了它在加强等腰取等不等式方面的应用;对已有的一些不等式发现模型进行了新探讨;提出了验证等腰取等不等式最佳系数的一种方法;给出了大量的应用实例及新的不等式成果.     

再谈不等式自动发现与判定程序agl2010的改进和应用

对不等式自动发现与判定程序agl2010的功能进行了若干改进,通过15个具体实例演示了程序的强大功能;利用agl算法得到了一类三角形几何不等式最佳系数的估算方法;结合Bottema软件的xprove命令,得到了一种带约束条件不等式自动发现的设计方案;通过建立数据限制函数,实现了一类变元取值范围受限制条件不等式的自动发现和自动加强,从而拓展了包括Fan Ky不等式在内的一大批不等式类型;最后提出2个有趣的不等式问题.     

高等数学中一道不等式试题的证明

由于不等式在纯粹的数学中扮演着关键的角色,而且对不等式的证明,方法难易悬殊,使用技巧各异。文中通过一道高等数学中出现的不等式试题＂已知f＇（x）〉0,x∈R,求证：f（a＋x）＋f（a-x）≥2f（a）＂,对一些常用的不等式证明方法进行总结,运用中值定理;函数的凹凸性;泰勒公式法;函数的极值法;函数的单调性证明该不等式。     

三角形几何量的秩序图和量级图初探

以不等式自动发现与判定程序agl2010为工具,通过对已知不等式进行隔离研究,提出了研究三角形几何不等式的有向图表示方法,并绘制了三角形中部分几何量的秩序图和量级图;讨论了秩序图和量级图的数据描述结构;隔离了一些著名不等式结果;提出了待解决的不等式问题.     

Lp投影不等式与Lp质心不等式的等价性

Petty投影不等式和Busemann-Petty质心不等式是经典Brunn-Minkowshi理论的基本不等式.在最近的研究中,Lutwak,Yang,Zhang又把以上2个不等式推广到L_p Brunn-Minkowshi情形中.该文的目的是建立起L_p-Petty投影不等式和L_p Busemann-Petty质心不等式的等价性.     

推广的曲率熵不等式

曲率积分不等式不仅对刻画曲率流的演化过程起关键性作用，而且对人们理解晶体生长、燃烧过程也起着重要的作用。利用凸函数的性质与仿射等周不等式，推广了R2中的曲率熵不等式, 得到了Rn中类似的关于Gauss曲率的不等式，并证明了等号成立的情形。事实上，当n=2时，给出了已有的曲率熵不等式的一个简化证明。
     

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-