英国《每日电讯报》：中国A股为何疯狂

过去，国际投资者不大喜欢中国股票，因为企业资产负债表往往不够透明。这使上海证券交易所和深圳证券交易所看起来与其说像是有信誉的交易中心，不如说更像是赌场。上证综合指数从2008年的5500点暴跌至1820点后，在几年时间里一直没有起色。然而，据《香港经济日报》报道称，上证综合指数于12月8日大涨2．8％，突破3000点，创至44个月以来的新高。而奥地利《新闻报》也称，自今年年中以来。上证综合指数涨幅已经超过40％。中国A股这轮暴涨的背景是：在房价连续下跌5个月后。为了防止住房市场崩盘，中国当局10月份进行“定向宽松”，11月又意外降息。     

股票市场的分形特征

针对我国股票市场所具有的混沌特征，运用分形理论的方法对我国上证指数进行分析,给出一种构造生成元的新方法——尺度生成法，并采用此生成法构造出我国上证综合指数的生成元．根据分形迭代函数系统理论与方法，迭代生成我国上证综合指数的模拟走势图，并计算出其分形维数，从而得到了股市波动的复杂程度的定量值．     

基于无偏灰色-马氏链组合模型的股价研究

通过对股票价格运行特点分析，将这一随机时间序列分解成由灰色模型拟合的趋势变动序列和马尔可夫链，并在对两详细剖析的基础上建立了无偏灰色—马氏链组合模型，以此预测上证综合指数的区间概率分布、平稳分布、均值以及平均涨落时间，检验和实例表明该模型具有较高精度和应用价值．     

后危机时期中美股市的联动性分析

考虑通过中国股指和美国股指这一宏观经济的晴雨表来分析危机后中美股市的联动性.针对中国上证综合指数和和美国道琼斯工业平均指数日对数收益率(2012/6/26~2014/9/30)建立了VAR模型,并进行Granger因果关系检验、脉冲响应和方差分解等实证分析,结果表明:在后危机时期,道琼斯工业平均指数前一日的对数收益率变动一个单位,会引起上证综合指数当日对数收益率同向变动0.165013个单位.短期内,美国股市对中国股市具有单方向的影响,而反之不然.     

利率、股票指数、货币供应量与房地产价格关系的实证研究

利用计量经济学方法,选取利率、股票指数和货币供应量三个变量建立向量误差修正（VEC）模型,并通过脉冲响应函数与方差分解的方法研究各变量对房地产价格的动态影响及其效果。结果表明：当期房地产销售价格指数FPI、货币供应量M2、上证A股综合指数SZHA、金融机构1–3年贷款基准利率R都对滞后期房地产销售价格有持续影响,且不同时间段影响方向不同;随着时间的推移,房地产销售价格指数和上证A股综合指数对房地产销售价格波动解释的贡献率较大,远超出货币供应量和金融机构1–3年贷款基准利率对房地产销售价格波动解释的贡献度。     

基于朴素贝叶斯分类算法的股指预测研究

预测大盘指数的涨跌幅度在股票投资中具有重要的意义。大盘指数的涨跌既与国家的宏观经济政策有关,也与大盘指数自身运行状态有关。结合朴素贝叶斯分类算法和股票大盘指数涨跌的影响因素建立了大盘指数分类预测模型,以上证指数为例进行了实验,结果表明分类预测模型有效,准确性较高。     

我国央行历次下调基准利率的原因分析及对寿险的影响

1990年至2012年,我国中央银行32次调整金融机构存贷款基准利率,以间接控制信用规模,调节货币流通,维持金融体系稳定运行。在这22年里,我国一共经历了四次降息周期,这四个周期持续时间、降息幅度各不相同,降息政策制定的原因也有所差别。利率下调对我国保险业也产生了广泛影响,首当其冲的是寿险行业。面对我国仍然存在的降息空间,寿险公司应该提高警惕,合理采取各种措施防范利率下调带来的风险,避免利差损失的出现,以保障长久稳定地运行。     

财经剪贴

６月２５日，美联储主席格林斯潘再次挥起了降息大棒，不过幅度并非市场所预期的５０个基点，而是２５个基点。至此，联邦基金利率已经降至１％，为１９５８年以来的最低水平。对于格老此举，业内人士反应不一。支持者称格老老谋深算，降息将进一步防范通货紧缩风险，防止美国经济步日本的后尘；反对人士则称，格老已黔驴技穷，短期利率已经降至１％，未来可供联储使用的“子弹”寥寥无几。孰是孰非，只有拭目以待。美国权威的半导体工业协会日前发表报告预测，２００３～２００６年全球半导体产品销售额年均增长率将达到９．８％，这表明，…     

稳定分布及其在GARCH中的运用

用稳定分布的特征函数和Fourier变换得到稳定分布的参数估计和概率密度．应用稳定分布对上证交易所的综合指数进行分布拟合，并建立了GARCH-稳定模型，探讨稳定分布对GARCH模型的影响．     

基于BP神经网络的股票价格预测

影响股票价格变动的因素有很多,且股票数据具有高度的非线性和时变性等特征,因而采用经典线性时间序列模型可能无法完全提取非线性部分的信息.针对这一问题,建立了BP神经网络模型、PCA-BP神经网络模型、GA-BP神经网络模型和ARIMA(6,1,6)模型对上证综合指数的收盘价格进行预测.计算各预测模型下的统计指标RMSE和MAE,并对4个模型进行对比分析.结果表明,GA-BP神经网络预测模型与其它三种模型相比具有更小的误差,也就是说GA-BP神经网络预测模型对上证综合指数的收盘价格预测效果更好.     

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