Littlewood－Paley算子和Marcinkiewicz积分的一些性质

在适当条件下，若ｆ（ｘ）∈δ，则ｇ（ｆ）（ｘ）（ｓ（ｆ）（ｘ），ｇ（ｆ）（ｘ），μ（ｆ）（ｘ））＝∞，ａ．ｅ．ｘ∈Ｒ，或ｇ（ｆ）（ｘ）（ｓ（ｆ）（ｘ），ｇ（ｆ）（ｘ），μ（ｆ）（ｘ））＜∞，ａ．ｅ．ｘ∈Ｒ．在后一情形，有ｇ（ｆ）（ｘ）（ｓ（ｆ）（ｘ），ｇ（ｆ）（ｘ），μ（ｆ）（ｘ））∈δ，且‖ｇ（ｆ）‖ａ．ｐ．ｗ（‖ｓ（ｆ）‖ａ．ｐ．ｗ，‖ｇ（ｆ）‖ａ．ｐ．ｗ‖μ（ｆ）‖ａ．ｐ．ｗ）≤Ｃ‖ｆ‖ａ，ｐ．ｗ，其中Ｃ是与ｆ（ｘ）无关的常数．     

二阶非线性中立型微分方程的振动准则

文章主要研究了如下方程的振动性（r（t）｜（x（t）＋p（t）x（τ（t）））′｜α-1（x（t）＋p（t）x（τ（t）））′）′＋q0（t）｜x（τ0（t））｜α-1x（τ0（t））＋∑ni=1qi（t）｜x（τi（t））｜βi-1x（τi（t））=e（t）,t≥T.其结果推广和改进了已有结论.     

矩阵多项式的交与和的像空间及核子空间

给出了同一个矩阵A的若干个多项式的像空间及核子空间的和与交的结构,得出了以下的结果：1）R（f1（A））∩R（f2（A））∩…∩R（fk（A））=R（[f1（A）,f2（A）,…,fk（A）]）;2）R（f1（A））＋R（f2（A））＋…＋R（fk（A））=R（（f1（A）,f2（A）,…,fk（A）））;3）N（f1（A））∩N（f2（A））∩…∩N（fk（A））=N（（f1（A）,f2（A）,…,fk（A）））;4）N（f1（A））＋N（f2（A））＋…＋N（fk（A））=N（[f1（A）,f2（A）,…,fk（A）]）.它们推广了蒋永泉、胡付高等的结果.     

三阶泛函微分方程非振动解的渐近性

考虑三阶非线性泛函微分方程（r2（t）（r1（t）x′（t））′）′＋p（t）x′（t）＋q（t）F（x（σ（t））,x′（σ（t））,（r2（t）x′（r（t）））′）=0得到了方程的非振动解x（t）满足limt→∞x（t）=0的充分条件．     

带时滞一类非线性微分方程周期正解存在性

对带时滞一类非线性微分方程：x′（t）=-a（t）x（t）＋f（t,x（t-τ1（1,x（t）））,…,x（t-τm（t,x（t））））x′（t）=a（t）x（t）-f（t,x（t-τ1（t,x（t）））,…,x（t-τm（t,x（t））））利用锥压缩拉伸不动点定理,研究了它们至少存在一个周期正解的充分条件及有关结论,较之相关研究前进了.     

由强迫函数诱导的高阶泛函微分不等式的有界振动

本文考虑了非线性泛函微分不等式Ｘ（ｔ）｛ＬｎＸ（ｔ）十ｆ（ｔ，ｘ（ｇ１（ｔ））），…Ｘ（ｇｍ（ｔ）））－ｈ（ｔ）｝≤０．（当ｎ为奇数时）（１）ｘ（ｔ）｛Ｌｎｘ（ｔ）－ｆ（ｔ，ｘ（ｇ１（ｔ）），…Ｘ（ｇｍ（ｔ）｝≥０（当ｎ为偶数时）（２）的振动问题，得到了不等式（１）和（２）的一切有界解振动和一切解振动的充分条件．     

全球瞩目中国稀土

镧（La）、铈（Ce）、错（Pr）、钕（Nd）、钷（Pm）、钐（Sm）、铕（Eu）、钆（Gd）、铽（Tb）、镝（Dy）、钬（Ho）、铒（Er）、铥（Tm）、镱（Yb）、镥（Lu）,以及与镧系的154个元素密切相关的两个元素——钪（Sc）fn钇（Y）共17种元素,被称为稀土元素（RareEarth）。简称稀土（RE或R）。     

河北省藓类植物新记录及其地理分布

首次报道9种河北省藓类植物新记录：（1）深色红叶藓（Bryoerythrophyllumatrorubens）,（2）纽藓（Tortellahumilis）,（3）树生墙藓（Tortulalaevipila）,（4）短尖叶墙藓（Tortulaschmidii）,（5）拟阔叶小石藓（Weisiaplatyphylloides）,（6）齿边缩叶藓（Ptychomitriumdentatum）,（7）狭叶缩叶藓（Ptychomitriumlinearifolium）,（8）卷叶紫萼藓（Grimmiaincurva）,（9）厚边紫萼藓（Grimmiaunicolor）,并对它们的认别特征做了简要讨论．     

二阶非线性时滞微分方程的振性

给出方程ｘ（ｔ）＋ａ（ｔ）ｕ（ｘ（ｔ））＋ｐ（ｔ）ｆ（ｘ（ｔ），ｘ（ｈ１（ｔ）），…，ｘ（ｈｍ（ｔ））＝０所有解振动的若干充分性判据。     

一类一阶微分方程的通解问题

文章讨论了微分方程y′（x）u（y）=q（x）v（y）解的特殊求法,得出：当{u（y）/v（y）}′=y′/v（y）时y′＋p（x）u（y）=q（x）v（y）有通解u（y）/v（y）=e^-∫p（x）dx[∫q（x）e^∫p（x）dx dx＋c]。     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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