自相关线性回归模型的若干问题

在普通线性回归模型的理论、方法的基础上，对讨论更一般的线性回归模型－－自相关的线性回归模型。     

灰色GM(1,1)与线性回归组合模型及其在变形预测中的应用

将GM（1，1）模型和线性回归模型组合起来进行变形预测，改善了原线性回归模型中没有指数增长趋势及灰色GM（1，1）模型中设有线性因素的不足，使组合模型更适用于变形的一般情况。     

机械工业宏观计量经济模型研究

基于时间序列分析的基本理论，采用线性回归和传递函数分析方法，研究了机械工业主要经济指标与宏观主要经济指标之间的相互影响关系．在此基础上，分析比较了机械工业主要经济指标的多元线性回归模型和多输入单输出传递函数模型．结果显示，传递函数模型比线性回归模型精度更高，更具有普遍性．     

线性等式约束下线性回归模型参数估计的局部影响评价

本文研究线性回归模型在线性等式约束下参数估计的局部影响评价问题，导出了线性等式约束下线性回归模型在各种扰动模式下参数估计的局部影响度量，通过实例分析，表明了本文方法的有效性。     

增长记忆型自适应线性回归模型参数估计算法及应用

本文讨论了根据经济信息的不断增长，调整原有线性回归模型的必要性，介绍了一种增长记忆型自适应线性回归模型参数估计算法，并给出了应用实例。     

模糊线性回归模型的参数估计

对观测值为梯形模糊数的线性回归模型，通过一个适当的距离利用最小二乘法讨论参数估计的存在性。对于一元线性回归得到参数估计的解析表达式，对多元线性回归的参数估计转化为二次规划问题。文中例子说明了模型的适用性。     

一般正态线性回归模型岭估计的贝叶斯推广

本文讨论了一般正态线性回归模型的参数岭估计问题，从贝叶斯方法出发给出了岭估计在解决相关问题时的一种合理性的解释，并且将贝叶斯方法在特殊正态线性模型中的应用推广至更一般的正态线性回归模型．     

自相关线性回归模型的若干问题

在普通线性回归模型的理论、方法的基础上,讨论更一般的线性回归模型——自相关的线性回归模型。     

BP网络与多元回归在原油黏度预测中的比较研究

通过探索原油的族组成与黏度的关系，比较了多元线性回归模型与BP网络模型对这种关系的关联能力及泛化能力.结果表明，BP网络模型对原油的族组成与黏度的预测远好于多元线性回归模型，其平均相对偏差仅为4.0%.     

统计回归模型及其优化算法综述

在大数据时代,正则化(惩罚)回归模型成为高维数据分析的一种有效分析工具.文中从统计模型理论和优化算法两个角度对正则化回归模型进行简要的概述,主要介绍线性回归模型、广义线性模型和分位数回归模型三种经典且重要的回归模型以及相应的正则项.对于线性回归模型,介绍最小二乘回归和l_1-正则最小二乘回归问题的优化算法;对广义线性模型和分位数回归模型,介绍逻辑回归模型和求解l_1-正则逻辑回归问题的优化算法,并展示分位数回归模型和求解相应的正则化分位数回归模型的优化算法.最后,对正则化回归模型未来的研究方向进行展望.     

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