一类二次二层规划的平衡点算法

Manoel Campelo[1]借助线性规划的单纯形算法,给出了求解线性二层规划的平衡点算法.本文借助线性规划的单纯形法和二次规划的Lemke算法,给出求解一类非线性二层规划的平衡点算法,并给出算例说明算法可行性.     

线性二级价格控制问题的Topkis-veinott修正算法

利用K-T条件把线性二级价格控制问题转化为单层数学规划问题,结合Topkis-veinott修正算法,给出了线性二级价格控制问题的Topkis-veinott修正算法;同时,对其收敛性做了深入的研究,给出并证明了线性二级价格控制问题的Topkis-veinott修正算法的收敛性定理.     

双层线性分式规划的性质和算法

讨论了双层线性分式规划问题，利用分式对偶理论和Kuhn-Tucker条件，给出一些二层规划解的最优性条件，并且借助于PCP算法的思想，给出求解双层线性分式规划行之有效的算法．     

求解线性不等式组问题的几种方法

本文研究了求解线性不等式组的几种实用算法,首先把线性不等式组问题转化为线性规划和凸二次规划,通过求解线性规划和凸二次规划得到线性不等式组的一个解,紧接着给出了直接求解线性不等式组的旋转算法;实例说明这些方法是可行的.     

求解线性多目标规划的一种新方法

给出求解线性多目标规划问题弱有效解子集的一种新算 法. 在不同的条件下, 运用此算法得到了线性多目标规划的弱有效解子集, 并在得到的解子 集中再次进行寻优, 进而得到弱有效解集中决策者满意的较优解; 同时用VC++语言实现 了此算法, 并给出了具体算例.     

一类带有混合约束的二次半定规划及其投影收缩算法

研究带有线性等式及线性不等式约束的二次半定规划问题.讨论对偶理论、最优性条件及其等价的单调变分不等式,给出相应的投影收缩算法.经收敛性分析,可得该算法是全局收敛的.     

具有预测功能的规划识别算法研究

对规划识别中各种事件之间的关系进行了详尽的分析,根据分析结果,给出了具有预测功能的规划识别算法的知识图和规划识别算法,新的规划识别算法采用了自下而上和自上而下相结合生成解图的方法,对Kautz方法、基于规划知识图的方法和具有预测功能的规划识别算法在知识表示结构、搜索方法、冲突解决和求解结果等方面进行了对比和讨论.最后给出了实验结果,结果显示随着领域知识的增加识别算法所需的时间线性增加.     

DC规划的整体算法

通过对DC规划问题目标函数的线性下界估计,建立了DC规划的松弛线性规划,给出了 DC规划问题的一个新的整体优化算法.并通过对松弛线性规划可行域的细分以及一系列松弛线性规划的求解过程证明了算法的可行性,实例显示算法对大规模问题也是有效的.     

求解线性双层规划的一个全局收敛算法

基于线性双层规划的最优解在约束域极点上达到这一特性,得到了线性双层规划问题的一些性质。然后给出了一个求解线性双层规划的全局收敛算法,该算法从合理反应集的一个顶点开始进行搜索。最后通过一个算例说明这种算法的可行性和优越性。     

基于过滤信赖域算法的非线性二层规划求解方法

引入过滤信赖域技术,给出了一种利用线性二次二层规划逼近求解非线性二层规划的方法,并通过一个数值试验,验证算法的可行性.     

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