政府经济职能的经济理论分析

经济思想的新发展——规制理论、产权理论和公共选择理论时政府的经济职能有着非同小可的影响。我们不应局限于政府应不应该干预经济的讨论，而应利用新的经济思想，重新审视作为市场失灵的补救措施的政府经济职能及其两种基本形式：政府规章和公企业。     

遗产旅游的外部不经济及其治理策略

随着我国“世界遗产”数量的增加，遗产旅游正日益成为旅游业的一个热点。文章在充分分析遗产旅游外部性的基础上，提出了中国遗产旅游外部不经济的治理策略。     

乐山市低碳旅游开发策略研究

低碳旅游是低碳经济环境下旅游业发展的必然趋势,是低碳经济的内在要求。乐山市是我国西部地区的著名旅游城市,拥有丰富的旅游资源,正大力实施低碳旅游发展战略。乐山市低碳旅游开发策略的研究为低碳旅游实践提供了现实性的理论支持,引领了低碳旅游的发展方向。乐山市低碳旅游发展策略主要包括政府支持、碳足迹测度、低碳专业技术人才培育、低碳旅游产品开发和推广绿色旅游等。     

体验经济时代下的攀枝花旅游业策略分析

文章以体验经济理论为依据,根据体验旅游产品开发设计原则,结合攀枝花独有的旅游资源优势和发展情况,提出了体验经济时代下攀枝花的旅游业发展策略,即在可持续发展的理念下创意体验主题,增加体验成分以及充分开发旅游纪念品市场。     

山西省旅游业空间发展研究——基于旅游竞争力与经济联系的视角

随着地方旅游业的迅速发展,旅游空间结构成为研究的一个重要方向.本文基于旅游空间发展相关理论,利用统计年鉴、统计公报等数据,运用因子分析和引力模型对山西省11个地市旅游业进行了竞争力和经济联系分析,结果表明:山西省各区域旅游业发展差异较大,各地市之间的旅游经济联系具有显著差别,太原市、晋中市竞争力最强,且与其他城市的经济联系最活跃.11个地市旅游竞争力与经济联系量排名具有很大契合度,太原、晋中居首,朔州、吕梁居尾.结合区域地理分布特征,因地制宜地提出山西省旅游产业发展空间结构即核心旅游经济圈、晋北旅游经济带、晋南旅游经济圈.     

基于"体验经济"理念的旅游发展战略研究

旅游业已成为众多地区经济发展的重要依托，而体验经济时代的来临，赋予了旅游业新的内涵与机遇。在分析了“体验经济”的内涵及其与旅游的关系的基础上，从旅游发展现状综合评价、旅游发展总体目标的制定、旅游资源的整合和旅游市场的开拓四个方面探讨了基于“体验经济”理念的旅游发展战略的制定。     

邓小平发展旅游业思想与中国旅游业的发展

邓小平发展旅游业思想是邓小平理论的重要组成部分,《邓小平论旅游》是邓小平发展旅游业思想的集中体现,邓小平把发展旅游业作为中国解放思想、改革开放、加快社会主义现代化建设的突破口之一,邓小平发展旅游业思想内容丰富,主要包括政府主导型旅游发展战略,旅游业发展要以经济为中心,走旅游产业化的发展道路,优先发展入境旅游的市场发展战略,正确处理资源保护与旅游开发的关系,旅游开发要和城市建设一体化,要重视旅游昨旅游教育等内容,邓小平发展旅游业思想是中国发展旅游业的行动指南。     

攀枝花市旅游企业发展的政府支持与保障措施研究

旅游企业是旅游业的重要组成部分,对旅游业的发展起着非常重要的作用。攀枝花市的旅游企业由小型旅游企业构成,没有力量改善其外部生存环境,在激烈的市场竞争中处于不利地位,亟需政府为旅游企业发展提供强有力的支持与保障。本文主要从九个方面构建了旅游企业发展的政府支持系统,以促进旅游企业和旅游业的快速发展。     

南崇经济带旅游业竞争力的培育及提升策略

文章运用Porter的钻石理论对南崇经济带旅游业的旅游资源、客源市场、相关产业、发展机遇及政府政策等五个因素进行系统分析,并提出发挥政府主导,加强地方扶持力度;整合旅游资源,构建跨境旅游市场网;健全合作机制,提高旅游安全系数;挖掘旅游产品,延长旅游产业链;搭建网络平台,实现旅游信息共享等发展策略,旨在提升南崇经济带旅游业的竞争力。     

西部旅游业的发展潜力及对策

西部旅游资源得天独厚，旅游业发展潜力巨大。要发展西部旅游业，需要有科学的规则与管理，更新的观念，改变传统的开发模式，规范的旅游市场，加大旅游地形象宣传和促销并建立信息网络，形成大运量立体旅游交通网络，优化旅游经济结构，实现知识创新开发并培养高素质人才队伍。     

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