Fibonacci数列Cassini公式的推广

对Ｆｉｂｏｎａｃｃｉ数列的一个重要性质：Ｆｎ＋１Ｆｎ－１Ｆ＾２ｎ＝（－１）＾ｎ（Ｃａｓｓｉｎｉ）公式进行了推广。由此推广给出Ｆｉｂｏｎａｃｃｉ数列的另一个重要性质：Ｆｍ＋ｎ＝Ｆｎ－１Ｆｍ＋ＦｎＦｍ＋１的新证明，并得到任意两个Ｆｉｂｏｎａｃｃｉ数的平方和（差的）关系式。     

Fe—Mn二元系中相能量MEAM研究

应用修正嵌入原子法（ＭＥＡＭ）研究了Ｆｅ－Ｍｎ二元合金中γ相（ｆｃｃ）和α（ｂｃｃ）随Ｍｎ含量变化的不同能量,它们的能量变化趋势与Ｆｅ－Ｍｎ二元相图的推测结果一致,由此表明,用ＭＥＡＭ法研究Ｆｅ－Ｍｎ二元系中两种立方相的能量是有效的。     

Fe-Mn-Si形状记忆合金fc(γ)→hcp(ε)马氏体相变温度的热力学预报

借助于Ｆｅ－Ｍｎ－Ｓｉ合金层错几率Ｐｓｆ的Ｘ射线测量,计算了Ｐｓｆ与合金成分的关系,得到Ｆｅ－Ｍｎ－Ｓｉ三元系的１／Ｐｓｆ表达式．结合层错形核的热力学模型,经回归得Ｆｅ－Ｍｎ－Ｓｉ合金ｆｃ（γ）→ｈｃｐ（ε）马氏体相变的临界相变驱动力和Ｐｓｆ的关系式,进而得到临界相变驱动力与合金成分的关系．借助Ｐｓｆ建立了成分与相变驱动力之间的关系,结合有关热力学分析计算得到的Ｆｅ－Ｍｎ－Ｓｉ合金γ和ε两相Ｇｉｂｂｓ自由能曲线,预报了Ｆｅ－Ｍｎ－Ｓｉ三元系合金的ｆｃｃ（γ）→ｈｃｐ（ε）马氏体相变的温度．     

两类不可约图的判定方法

本文讨论了Ｆｉｂｏｎａｃｃｉ数列｛Ｆｎ｝,Ｌｕｃａｓ数列｛Ｌｎ｝及数列｛δｎ｜δｎ＝Ｌｎ－１＋Ｆｎ－１｝中的整除关系和素数的判定方法,据此证明了两类图Ｐｎ和Ｄｎ是不可约图的充分条件．为图的色性分析理论奠定了基础．     

一类复合图的niche数上界

研究证明：在一定条件下,两个有限ｎｉｃｈｅ图Ｇ１和Ｇ２的两点粘接图的ｎｉｃｈｅ数ｎ（Ｇ１：Ｇ２（ｕ１＝ｖ１,ｕ２＝ｖ２）≤ｎ（Ｇ１）＋ｎ（Ｇ２）－ｒ,其中ｒ＝０,１,２。     

分担两个小函数的亚纯函数

设ｆ和ｇ是非常数亚纯函数,ｎ为非负整数,ａ,ｂ,ｃ,ｄ是ｆ和ｇ的小函数,其中ａ≠ｃ＾（ｎ）,ｂ≠ｄ＾（ｎ）。如果ｆ＾（ｎ）＝ａ＝ｇ＾（ｎ）＝ｂ及δ（ｄ,ｇ）＋２（∞,ｆ）〉ｎ＋５,δ（ｃ,ｆ）＋δ（ｄ,ｇ）＋２（∞,ｇ）＋（ｎ＋２）（∞,ｆ）〉ｎ＋５,则ｆ＾（ｎ）－Ｃ＾（ｎ）／ａ－ｃ＾（ｎ）＝ｇ＾（ｎ）－ｄ＾（ｎ）／ｂ－ｄ＾（ｎ）呀（ｆ＾（ｎ）－ｃ＾（ｎ）（ｇ＾（ｎ）－ｄ＾（ｎ）＝（ａ－ｃ＾（ｎ）     

不定复空间型中的全实极大类空子流形

设Ｎ＾ｎ（ｃ）是复ｎ维带有指标为ｎ的常全纯截面曲率为ｃ的复空间型，Ｍ是等距浸入在Ｎ＾ｎ（ｃ）中实ｎ维完备的全实类空子流形。本文获得：当Ｍ极大时，Ｍ是全测地的（ｎ≥２，ｃ≥０或者０≤Ｓ≤－ｎ（ｎ－１）ｃ／０），其中Ｓ表示Ｍ的第二基本形式长度的平方。     

PECVD生长nc-Si:H膜的掺杂特性研究

采用常规ＰＥＣＶＤ工艺,以高Ｈ２ 稀释的ＳｉＨ４ 作为反应气体源,以ＰＨ３ 作为Ｐ原子的掺杂剂,在Ｐ型（１００） 单晶硅（ｃ－ Ｓｉ） 衬底上,成功地生长了掺Ｐ的纳米硅膜（ｎｃ－ Ｓｉ（Ｐ）：Ｈ） 膜。通过对膜层结构的Ｒａｍａｎ 谱分析和高分辨率电子显微镜（ＨＲＥＭ） 观测指出：与本征ｎｃ－ Ｓｉ：Ｈ 膜相比,ｎｃ－ Ｓｉ（Ｐ）：Ｈ 膜中的Ｓｉ 微晶粒尺寸更小（～３ ｎｍ） ,其排布更有秩序,呈现出类自组织生长的一些特点。膜层电学特性的研究证实,ｎｃ－ Ｓｉ（Ｐ）：Ｈ 膜具有比本征ｎｃ－ Ｓｉ：Ｈ 膜约高两个数量级的电导率,其σ值可高达１０－ １ ～１０１ Ω－１ｃｍ －１ 。这种高电导率来源于ｎｃ－ Ｓｉ（Ｐ）： Ｈ 膜中有效电子浓度ｎｅ 的增加、Ｓｉ 微晶粒尺寸ｄ 的减小和电导激活能ΔＥ的降低。     

Banach空间的K-凸性模与K-光滑性模

首次对Ｂａｎａｃｈ 空间引进了 Ｋ－ 光滑性模的概念,从而刻划了 Ｋ－ 一致光滑空间的特征．给出了Ｂａｎａｃｈ 空间的 Ｋ－ 凸性模和 Ｋ－ 光滑性模之间的关系,利用这些关系得到如下结果：（ｉ） 一列Ｂａｎａｃｈ 空间｛ Ｘｉ｝ ∞ｉ＝ １ 的ｌｐ － 乘积空间是一致光滑当且仅当对任意ｉ,Ｘｉ 为一致光滑且具有共同的光滑性模;（ｉｉ） 一列Ｂａｎａｃｈ 空间｛ Ｘｉ｝ ∞ｉ＝ １ 的ｌｐ － 乘积空间是 Ｋ－ 一致光滑当且仅当存在 ｎ０ ,当 ｎ ＞ ｎ０ 时,Ｘｎ 为一致光滑且具有共同的光滑性模,当１ ≤ｎ ≤ｎ０ 时,Ｘｎ 为Ｋｎ － 一致光滑且∑ｎ０ｎ ＝ １Ｋｎ ≤ｋ ＋ ｎ０ － １ ．另外,文中还给出了 Ｋ－ 一致光滑空间的一个充分必要条件．特别地,当ｋ ＝ １ 时得到了一致光滑空间的一个新的充分必要条件．最后说明了 Ｋ－ 一致光滑空间具有一致正规结构     

复空间中全纯自同构的逼近

改进了Ａｎｄｅｒｓéｎ，Ｌｅｍｐｅｒｔ和Ｆｏｒｔｎｅｒｉｃ两个关于复空间中全纯自同构逼近的结论．     

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.     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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