基于VAR模型的辽宁省经济增长波动分析

通过建立向量自回归模型，运用脉冲响应函数和预测方差分解的方法对辽宁省宏观经济系统中经济增长的波动情况进行实证分析．研究结论表明：辽宁省经济发展基本符合出口导向型增长假说，影响辽宁省宏观经济波动的变量中，出口额占主要地位，长期上看GDP变化对其响应显著为正，且方差分解中来自出口的新息对GDP波动的贡献也最大．因此，目前加速辽宁省宏观经济增长的有效途径是实施出口导向型战略，在振兴东北老工业基地的基础上大力发展现代化工业并逐步扩大出口。     

经济增长中的波动

提出了一个宏观经济的动力学模型，该模型把短期的市场波动因素加入到长期的增长趋势中，得到了经济增长中增长波动的结果。     

国内生产总值对建筑业增长影响的计量分析

建筑业产出在很大程度上受到整体经济环境影响。采用序列稳定性检验（ADF）技术、协整检验技术和误差较正模型，分析了中国过去20年间国内生产总值（GDP）增长对建筑业增长影响。发现：中国建筑业与GDP之间有长期稳定的均衡增长关系，因此长远来看，建筑业会随着整体经济增长而发展壮大。另外，我国建筑业增长相对于GDP有1－2年滞后期，GDP每增长1％，建筑业会在1－2年后增长1．5％－1．6％，所以根据目前国家宏观经济增长情况，可以预测未来短期内的建筑业大致增长状况，这对于建筑业和房地产投资有指导意义。     

我国煤碳矿区发展规模的影响因素分析

本文通过定性分析与定量分析相结合的方法对矿区发展规模的影响因素进行了探讨．分析认为影响矿区发展规模的影响因素主要有：市场需求、资源储量、开采技术条件、投资、企业效益目标、国家政策、矿区自然地理等。矿区的发展规模必须与相关影响因素相适应．才能取得良好的矿区经济效益和社会效益。     

政府收支对我国经济波动的平抑效果

 采用构建的向量自回归模型（VAR模型）和向量误差修正模型（VEC模型），基于我国1985—2019年度经济发展相关数据的研究发现，政府支出冲击能在一定程度上提高实际产出和私人消费水平，对经济具有显著的促进作用；政府支出冲击会对私人投资造成短期挤出效应和长期挤入效应；从长期来看，政府收入冲击会导致实际产出水平的下降，政府收入冲击会造成私人消费和私人投资的剧烈波动。增强政策的正向效应，需要明确宏观调控中财政政策的目标，重视政府支出的度以及政府收入对私人消费和私人投资的影响，严格把控财政政策效应的滞后期。     

中国上市公司可持续增长的主因素分析

选择中国1994年底以前在上海、深圳证券交易所上市的282家A股上市公司为研究对象，运用主成份分析和多元回归分析的数理统计方法，确定和解释了影响中国上市公司可持续增长的主成份因素，并研究了上市公司可持续增长与公司营运能力、偿债能力、盈利能力和成长能力的平衡关系。分析结果表明：1)公司可持续增长率与资产负债率成反比，与流动比率、速动比率成正比；2)公司可持续增长率与公司盈利能力正相关，即盈利率越高，可持续增长比率也越高；3)除商业行业外，其余行业公司的可持续增长率与成长能力正相关；4)除商业行业外，不论是样本整体还是分行业、分规模，公司的可持续增长率均与营运能力正相关。     

我国国债对私人投资的挤入与挤出效应实证分析

我国采用积极的财政政策增发国债,扩大政府公共投资支出,对刺激内需、拉动私人投资和促进国民经济经济增长产生了明显作用。但我国国债规模的扩张,债务规模急剧增加会不会给经济运行带来负面影响？是否挤出私人投资,损害我国长期经济增长的能力等。本文主要运用对政府发行国债与私人投资等指标之间的建立回归方程,通过检验的结果可以看出国债发行与私人投资的t值检验都是显著的,说明中国发行国债对私人投资起到促进作用。     

影响上海股市的因素筛选和统计分析

为定量分析上海股市发展的内在机制以及宏观经济因素对股市的影响,特选取１８个表征股市的内部因素和６个与股市有关的宏观经济因素进行相关分析和因子分析,筛选出影响上海股市的１０余个主要因素．通过因子分析得到代表上海股市变化的几个主因子,为进一步研究股市扩容奠定基础．     

我国环境污染的影响因素及对策研究

经济增长对生态环境的影响始终是环境资源与生态经济学研究的热点。目前,我国正处在社会主义的初级阶段,经济增长主要依靠投资和对外贸易拉动,该经济发展方式带来了诸多环境问题。本文通过环境质量因素分析,有针对性地提出环境治理的政策建议：倡导有利于可持续发展的经济增长方式、生产方式和消费方式;优化经济结构,按照生态规律组织经济活动;加大环境保护的投资,实施长远而稳定的环境政策。     

投资项目评价中通货膨胀因素处理方法的探讨

通货膨胀对投资项目评价影响重大，本文就如何处理投资项目评价中的通货膨胀因素进行了探讨．     

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