从外资在中国产业结构的失衡谈吸引外资产业政策的调整

过去20多年来,随着外资的大量流入,一方面解决了中国资金的不足,促进了技术进步和我国经济的增长,另一方面也为中国经济的进一步增长带来了隐患,特别是外资在产业结构方面存在严重的不合理因素,如果不及时调整并加以改善,将影响中国产业结构的优化升级和外资的使用效率。文章围绕中国进行产业结构调整的必要性、外资在中国产业结构中的现状及其对中国产业结构的影响以及中国调整吸引外资产业政策的思路与对策进行了探讨。     

外商直接投资促进福建省工业产业结构升级的实证分析

主要对福建省外资工业产业结构的现状及其产业结构的升级效应进行了实证分析,认为外商在福建省工业企业的直接投资具有较为明显的行业倾向性,外商直接投资对产业升级的促进作用来源于其本身所具有的资本规模优势。     

金融发展与产业结构升级及经济增长的关系

对1978—2004年我国金融发展和产业结构升级、经济增长的关系进行了实证研究。结果表明,金融发展促进了我国产业结构的升级;金融体系通过促进我国产业结构升级从而促进了我国经济的增长。     

关于利用外资促进福建产业结构升级的若干问题

利用外资是福建经济具有有活力和潜力的经济增长点。本文分析了福建利用外商直接投资的现状及其对福建产业结构变动的影响 ,在此基础上 ,提出了要进一步优化外商投资环境以吸引更多的外资 ,同时 ,又要加强外商投资的产业引导 ,从而更好地推动产业结构的升级     

优化产业结构,促进我国对外贸易可持续发展

对外贸易和产业结构升级是经济领域的两大热点问题。优化产业结构可以促进对外贸易的发展,同时发展对外贸易,通过技术引进又可以优化我们的产业结构。国内外学者对这两个问题分别作了大量的理论分析和实证研究,但是对二者之间相互影响的研究并不多,其理论体系尚不成熟。本文以对外贸易对产业结构升级的影响作用作为研究对象作理论研究和实证分析,从而在对外贸易促进经济增长,进而影响产业结构升级这一层面上深入考察对外贸易与产业发展的内在联系和作用机理,从而更有针对性的促进和推进我国产业结构优化升级和对外贸易可持续发展。     

技术创新对江苏产业结构演进的影响研究

从技术创新的视角探讨江苏产业结构演进机理,采用2000—2012年的时间序列数据,分析了江苏省技术创新与产业结构演进的现状,并运用Granger因果关系检验和回归分析,揭示技术创新对江苏产业结构演进的具体影响。结果表明,江苏技术创新与产业结构演进存在单向因果关系,技术创新能够有效地促进江苏产业结构转型升级;而且,技术创新人才投入对第二产业的促进效果比第三产业显著,技术创新经费投入对第三产业的促进效果比第二产业显著。最后,提出技术创新促进江苏产业结构优化升级的对策建议。     

论国际直接投资的产业结构升级效应

国际直接投资可以有效促进发展中国家的产业结构升级,加速利用外资政策的调整,充分利用国际直接投资的产业升级效应是加入WTO后我国实现产业结构升级的必然选择。     

空间接近是否会影响城市产业结构升级趋同——基于空间杜宾模型的实证分析

本文在新经济地理学的框架下,基于空间距离的成本视角,以2005至2018年全国278个非区域中心地级市为考察样本,运用空间杜宾模型考察空间接近对区域城市产业结构升级趋同性的影响。研究表明:空间接近对产业结构升级的溢出效应十分明显,城市之间空间距离的成本缩小能够有效地促进本地城市产业结构升级,同时空间溢出效应会提升邻近等地区产业结构升级的趋同性。同时,东部地区的空间接近更容易引起城市产业结构升级趋同,而中西部地区产业发展在空间上较为独立。空间接近能通过劳动力流动促进产业结构升级趋同,通过金融集聚的方式可能会导致金融集聚对趋同性产生反向影响。     

城镇化、产业结构升级和城乡收入差距——基于PVAR模型的实证

选取我国1998—2013年的省际面板数据,对各地区的城镇化、产业结构升级及城乡收入差距的动态互动关系建立面板向量自回归模型.实证研究发现:城镇化和产业结构升级之间互为格兰杰因果关系,而城镇化与城乡收入差距之间以及产业结构升级和城乡收入差距之间只存在单向格兰杰因果关系; 城镇化水平的提高虽然会促进产业结构的升级,却不利于城乡收入差距的缩小; 产业结构升级则会抑制城镇化水平的提高; 随着城乡居民收入差距的逐渐减小,产业结构升级水平逐渐提高.     

基于协整分析的产业结构升级与城市化进程的关系研究

产业结构升级与城市化进程之间存在着密切的互动联系,城市化是推动产业结构升级的重要力量,同时城市化又必须与产业结构的升级调整相一致。城市化的发展带动了产业结构的演变和升级,而产业结构的优化、调整和升级又进一步推动城市化发展进程,城市化与产业发展之间是一种螺旋上升互相推动的关系。所谓城市化进程,就是人类社会活动及生产要素从农村地区向城市地区转移的过程。这其中包括了人口城市化与经济城市化两个概念。其所带来的结果就是,城市最终成为了人类社会的生活、生产、消费和污染集聚之地。因此,人口和经济的集聚状态成为衡量现代城市化的两项基本指标。本文通过对我国产业结构升级与城市化进程的协整分析表明,产业结构升级与城市化进程之间存在着长期均衡关系,具体表述为产业结构升级推动了城市化进程,而城市化进程发过来又进一步促进了产业结构的升级调整。     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

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