基于VAR模型的我国食品价格与货币供给关系的动态研究

结合我国2001年1月至2011年9月的数据，利用VAR模型进行实证分析，认为我国货币供给增长是食品价格上涨的格兰杰原因，食品价格上涨是M0增加的格兰杰原因。短期内，M1对食品价格的影响作用最强，M0对食品价格的影响速度最快。食品价格上涨促进M0增速上升，而M1和M2增速下降。长期来看，食品价格与M0、M1和M2具有稳定的协整关系，成本推动的食品价格上涨和货币供给增加是CPI走高的根本原因。提出有效控制货币增长、合理干预食品价格和保障食品供给的政策建议。     

可约的Dehn手术与含本质环面的Dehn手术

设M为紧致、可定向、不可约、不可约、不含本质平环及本质环面的3-流形，并且M只有一个环面分文T0，证明了：如果r1，r2为T0上使M（r1）可约，且使M（r2）含有一个本质环面的两个斜度，则（r1，r2）≤3．     

广义基本相对内射模

将基本相对内射的概念推广到广义基本相对内射。如果M1，M2是M的两个子模，得到了模M2是广义基本M1-内射的必要条件和充分条件。     

利用微机对“Ni(M)_4X_2型化合物光磁性质”的数值计算

本文根据统一晶场理论模型，设计了计算Ni（M）4X2（M=Pz、mpz，X=Cl、Br、I）型化合物能量矩阵的特征值、特征关以及计算其ZFS和EPR参量的计算机程序，并总结出了利用该程序对Ni（M）4X2（M=Pz、mpz，X=Cl、Br、I）型化合物的光谱、ZFS和EPR参量，并总结出了利用该程序对Ni（M）4X2（M=pz、mpz，X=Cl、Br、I）型化合物进行参量拟合的一般规律，其计算结果与实验值一致．     

含苯甲醚基团的高分子液晶的合成及表征

本文讨论了侧链含有亚甲氧基连接基高分子液晶的合成及表征．用酚类与苯甲基氯制备了六种单体，用硅氢加成法合成了高分子液晶．六种单体为：4-(4—烯丙氧基苯甲氧基)联苯(M1)，4’—甲氧苯基4—烯丙氧基苯甲醚(M2)，4’—甲苯基—4—烯丙氧基苯甲醚(M3)，苯基4—烯丙氧基苯甲醚(M4)，4—(4-烯丙氧基苯甲氧基)4’—甲氧基联苯(M5)，4—(4—甲氧基苯甲氧基)-4’—烯丙氧基联苯(M6)．用偏光显微镜和DSC测定了单体和高分子液晶的相转变温度和介晶范围，单体M5和M6显示较好的液晶性，聚合物PM1、PM5、PM6、P(M2—M5)和P(M2—M6)显示出较好的液晶性，共聚物液晶比其它高分子液晶的介晶范围宽．     

3-流形沿不可压缩曲面的融合（amaigamafion）及性质

主要研究了3-流形融合的一些性质，特别是两个3-流形沿不可压缩曲面融合的情形．设Fi包含δMi为3-流形Mi中的不可压缩曲面，h：F1→F2为一同胚，M=M1∪hM2．给出了不可压缩曲面Fi满足一定的条件时，两个3-流形M1和M2的融合M有不可压缩的边界．讨论了在两个3-流形M1和M2都不可约的基础上，M也是不可约的．由上述的两个结果，得到了一些相应的推论．     

含联吡啶或邻菲绕啉过渡金属配正离子与[Ni(cdc)_2]~(2-)的加合物的合成和波谱性质

合成了一系列含联吡啶或邻菲绕啉配体过渡金属配正离子与双（N-氰基亚胶基二硫代甲酸）合镍负离子的加合物，其通式为［ML2］［Ni（Cdc）2］（M＝Cu，Ni，CO；L＝bpy，Phen），［L2Cu2（P－C2O4）］［Ni（cdc）2］（L＝bpy，Phen）以及［M（Phen）n］［Ni（cdc）2］·2H2O（n＝1，M＝Cu；n＝2，M＝Zn）．通过元素分析、红外光谱、电子光谱、磁化率和顺磁共振谱对这些加合物进行了表征，讨论了正、负离子间的相互作用．     

球面上两点的最短距离的证明

教科书上对此问题只提出结论：“在球面上两点的最短距离，就是经过这两点的大圆在这两点之间的劣孤的长度．”《数学教学通讯》1983年2期上有文章给予了证明，简述如下；如图，M1M2为球面上两点，设则微分可以证明，y与R成减函数关系．所以当R最大等于球的半径时，MIMZ长有最小值，因此大圆劣孤M1M2长是M1到M2的球面最短距离．以上证明有两个问题：一是使用微分已超出高中数学范围；二是此种证法先人为主地规定了，M1到M2的最短路线是一道圆孤，只是去找最小的圆孤．为什么？没有论证．笔者提出一种证明方法，可以避免上述两个问题．…     

曲柳和荷兰豆的染色体核型分析与比较

对豌豆属植物曲柳(Pisum stiua L)和荷兰豆(Pisum sativum L)细胞染色体作了计数，并讨论了有关细胞学和分类学问题。实验表明，曲柳的核型公式为K(2n)＝14＝6m十6sm十2st，属于“2A”型，相对长度组成为2n＝14＝2L 4M2十8M1；荷兰豆的核型公式为K(2n)＝14＝8m 2m(SAT) 2sm十2st，属于“2A”型，相对长度组成为2n＝14＝8M2十6M1。同时还计算了两种植物染色体的体积，研究了它们的相对长度变异幅度、臂比变异幅度等。     

延长酚水多级泵的检修周期

1．振动原因分析 65Y-50＊7型油泵气蚀余量2．0M，电机功率55KW，流量25T／h，扬程350M。80Y-50＊8型油泵允许气蚀余量4M，扬程400M。泵的中心线在酚水储罐最低液位下2．5M，酚水温度在75℃左右。造成振动的主要原因有以下几个方面。     

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     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has