具误差的渐进伪压缩映射不动点的迭代

主要研究在巴拿赫空间中具误差的渐进伪压缩映射Ishikawa和Mann 迭代收敛到不动点的问题.Ishikawa迭代和Mann迭代是具误差的Ishikawa迭代和Mann迭代的特例.在以前的基础上,将渐进伪压缩映射从单值推广到多值,将Ishikawa迭代和Mann迭代从不带误差推广到带误差.论文中所得到的结果是对以前结果的一种推广.     

Hilbert空间中极大单调算子零点的带误差项的迭代格式

令H为Hilbert空间,A:H→2H为极大单调算子,受Wittmann和Mann对非扩展映射不动点存在性研究方法的启发,把Mann迭代和Rockafellar提出的近似邻近点算法揉和在一起,引进了2种带误差项的迭代格式.分别证明了一种迭代格式强收敛于极大单调算子的零点;另一种弱收敛于极大单调算子的零点.     

Banach空间中修改的Mann迭代与隐Mann迭代收敛的等价性定理

在一般的Banach空间中,证明了修改的Mann迭代序列和修改的隐Mann迭代序列关于几乎一致L-Lipschitz的广义渐近Φ-压缩映射收敛的等价性定理,推广和改进了近期的相关结果.     

3种迭代收敛的等价性

当T是强逐次伪压缩映射时,3种迭代(改进的Mann迭代,改进的Ishikawa迭代和改进的3重迭代)的收敛性是等价的.     

3种迭代的收敛的等价性(Ⅱ)

若T是强逐次伪压缩映射时,则三种迭代(改进的Mann迭代,改进的Ishikawa迭代和改进的三重迭代)的收敛性是等价的.     

关于三重迭代收敛性的若干问题

在实Banach空间中,讨论一类渐近非扩张-伪压缩映射的三重迭代序列的收敛性和在Lipschitz映射下三种迭代（改进的Mann迭,改进的Ishikawa迭代和改进的三重迭代）的收敛性等价性。     

q一致光滑Banach空间中一类非线性映射的Mann迭代过程

在q一致光滑Banach空间中,研究了一类非Lipschitz、非值域有界的Φ 强伪压缩映射和Φ 强增生映射的Mann迭代收敛问题,所得结果改进和扩展了近期许多相关结果.     

具误差的多值φ-强增生算子的三步迭代程序

在一致光滑Banach空间中,对不含连续条件的多值φ-强伪压缩映射的三步迭代序列的收敛性进行了讨论.Ishikawa迭代和Mann迭代可以作为本文结论的特殊情况.文中的这些结果提高和推广了Noor M A和Osilike M O的相应结论.     

解变分不等式的超梯度Mann迭代算法

介绍了关于变分不等式近似解的一种新的超梯度迭代算法.该算法在迭代过程中使用了Mann迭代,规定了一个较优的搜寻步长,并且选择了与以往投影算法所不同的搜寻方向.同时证明了所构造的算法生成的迭代序列在广义单调条件下是全局收敛的.     

在凸度量空间中拟非扩张映射的不动点定理

引入了凸度量结构和满足(Φ)条件的函数的概念,通过构造带有误差的广义Mann型迭代序列,探讨弱可共处映射公共不动点问题.     

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.     

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     

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