两个序半群直积的主左理想

本文给出了两个序半群直积的主左理想Ｌ（ｓ,ｔ）等于Ｌ（ｓ）×Ｌ（ｔ）;Ｌ－类Ｌ（ｓ,ｔ）等于Ｌｓ×Ｌｔ的充要条件。     

复数域上无限维矩阵李代数的y-型李代数

在无限维矩阵李代数ｇｌ∞（Ｃ）中定义了ｙ－型李代数,且证明了ｙ－型李代数是单李代数,在ｈ－型李代数中统一了１９９６年Ｌ．Ｃｈｅｎ章中的两类李子代数ｇｌ∞（ｐ（ｔ）和ｇｌ∞（ｐ（ｔ））,并完善了ｓｌ∞（ｐ（ｔ））的构造。     

嘉陵江西河赤眼鳟的生长研究

赤眼鳟属中小型经济鱼类，在筑坝河段生长较快．体长与体重的相关关系为：Ｗ＝００１３８９８Ｌ３０６６８（ｒ＝０９３２０７）；体长和体重生长方程为：Ｌｔ＝６７２１３１［１－ｅ－０１４６４（ｔ＋０９９２５）］，Ｗｔ＝５５９０４９２［１－ｅ－０１４６４（ｔ＋０９９２５）］３０６６８；体重生长拐点ｔｒ＝６６，拐点体重为１６４４１５ｇ．讨论了地方种群间的生长差异，探讨了资源利用状况和保护措施．     

一类平稳过程的逗留极限定理

设｛Ｘ（ｔ）,－∞〈ｔ〈∞为一实可分可测平稳随机过程,Ｌｔ（ｕ）＝∫＾ｔ０Ｉ（「Ｘ（ｓ）〉ｕ」ｄｓ,ｕ,ｔ〉０,ｖ＝ｖ（ｕ）为一适当函数,当ｕ→∞时,ｖ（ｕ）→∞,研究了在一定条件下∫＾∞ｘＰ（ｖＬｔ（ｕ）〉ｙ）ｄｙ／Ｅ（ｖＬｔ（ｕ））,ｘ〉０的收敛性,且这些条件表明｛Ｘ（ｔ）｝的边附分布Ｆ∈Ｄ（Φａ）,根据上述结果,还探讨了｛Ｘ（ｔ）｝超过高移动壁的逗留极限定理。     

新安江水库太湖新银鱼Neosalanx taihuensis Chen生长特性的初步研究

对生活在新安江水库的太湖新银鱼进行了生长测算，并测定了各体长组的肥满度，结果如下：（１）体长和体重的相关关系Ｗ＝３．４３２×ｌ０￣（－６）Ｌ￣（３．０５６）（ｒ＝０．９９８），（２）体长和体重的生长方程分别为Ｌ＿ｔ＝８０［１－ｅ￣（－０．１２４（ｔ＋０．１９８）］￣3和Ｗ＿ｔ＝２．２５［１－ｅ￣（－０．１２４（ｔ＋０．１９８）］￣３；（３）拐点年龄为８．８１月龄；（４）体长增长以１～２月龄最大，体重增长以８～１０月龄最快；（５）体长５５～６０ｍｍ的鱼肥满度最大。     

用球面多项式最佳逼近阶刻画Besov空间

设Ｅｎ（ｆ）ｐ表示ｆ∷Ｌ＾ｐ的ｎ次最佳逼近,Ｅｎ（ｆ）ｐ＝ｄｉｓｔ（ｆ;ｎ,Ｌ＾ｐ）－ｉｎｆ＾ｈｎ∈ｎ｜｜ｆ－ｈｎ｜｜ｐ,Ｄ＾ｐ．ｒ表示序列型子空间,则在球面函数的Ｈｏｌｄｅｒ范数下,Ｄ＾ｐ．ｒ为Ｂａｎａｃｈ空间,且有结论：若ｆ∈Ｌ＾ｐ（１≤ｐ〈∞）以及ｒ,ｎ∈Ｎ,则有Ｅｎ（ｆ）≤ｃｏｎｓｔＫ．（ｆ,ｎ＾－ｒ,Ｌ＾ｐ,Ｄ＾ｐ．ｒ）。又用球面函数的Ｈｏｌｄｅｒ范数,定义了一类Ｂｅｓｏｖ空间,用球面最     

一类连续分布时滞模型的稳定性

运用Ｌｙａｐｕｎｏｖ泛函方法，研究一类具有连续分布时滞模型ｘ′ｉ（ｔ）＝－ｂｉｘｉ（ｔ）＋∑ｎｊ＝１ａｉｊｆｊ（μｊ∫ｔ－∞ｋｉｊ（ｔ－ｓ）ｘｊ（ｓ）ｄｓ）＋Ｆｉ（ｔ），τｉｊ∈［０，∞），ｉ，ｊ＝１，２，…，ｎ其平衡点的全局渐近稳定性，获得了一些新的充分条件．     

一类H—值扩散过程的大偏差性质

设Ｈ是实可分Ｈｉｌｂｅｒｔ空间，Ｈ＝｛Ｘ（ｔ）；ｔ≥０｝是由下列随机微分言程｛ｄＸ（ｔ）＝σ（Ｘ（ｔ））ｄＷ（ｔ）Ｘ（０）＝０ｔ≥０决定的Ｈ－值扩散过程。λ（．）：「１，＋∞）→」１，＋∞）。本文讨论了Ｃ（「０，１」，Ｈ）上概率测度族｛Ｐ．（Ｘｔ（．）／√ｔλ（ｔ））＾－１；ｔ≥１｝的大偏差性质。在一定的条件下，得到了下界及弱型上界。     

新疆乌伦古湖河鲈种群的生长模型及生态参数的研究

本对新疆乌伦古湖河鲈种群的数量生长模型和生态学参数作了计算和分析，研究结果如下：１河鲈的生长模型为：Ｌｔ＝５３．６５（１－ｅ＾－０．１５（ｔ＋０．４１）．．．体长模型 Ｗｔ＝４０５２．７４（ｌ－ｅ＾０．１５（ｔ＋０．４１））＾３．１９８６．．．体重模型 ２体重增长率函数在ｔ＝２＾＋龄时有一拐点，此时体重增长加速度达最大值，表明２＾＋的河鲈体重的增长节律比之以往生命时期有了一个跃式上升，这时．．．     

红血球补充模型的全局吸引性

研究了动物体内红血球补充模型Ｎ（ｔ） ＝ ｒ（ｔ） － Ｎ（ｔ） ＋ Ｐｅｘｐ － ∑ｎｉ＝ １γｉＮ（ｔ－ τｉ） ,ｔ≥０,其中ｒ（ｔ） ∈Ｃ（［０, ＋ ∞）,（０, ＋ ∞））,Ｐ＞ ０,γｉ,τｉ ∈（０, ＋ ∞）。获得了保证其每一正解Ｎ（ｔ）趋于一常数的若干充分条件,改进了已有结果。     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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