案例教学法在西方经济学教学中的运用探析

在西方经济学教学中应用案例教学法,可以帮助学生更好地理解和应用西方经济学的基本原理和理论。但国内西方经济学案例教学中存在问题较多,教学效果较差。本文通过对国内案例教学中存在的问题进行分析探讨,以达到合理利用案例教学法提高西方经济学教学效果的目的。     

体育教学中如何培养学生的创造性思维

在体育教学中,需要培养学生的创造性思维能力是多样的。本文试从体育教学的特点出发,探讨学生创造性思维在体育教学中的培养途径,使学生成为创造性思维人才,将永远是社会发展的主流,也是经济时代和社会发展的需要。     

基于经济管理类高等数学教学改革的研究

高等数学作为高等学校经济管理类学生的一门专业必修课,一直是高校深化教学体制改革中的重点和难点．由于大多数的经济管理类专业都属于文理兼收,因此在高等数学教学中学生水平容易出现参差不齐的现象．如何能全面提高教学质量,激发学生的学习兴趣,通过详细分析经济管理类学生的学习特点,提出了可供参考的具体改革思路．     

浅谈数据仓库与数据挖掘的本科教学

根据在大学计算机类和经济管理类本科生中教授数据仓库与数据挖掘课程中存在的问题及特点,提出在教学中要根据计算机类和经济管理类本科生的不同特点展开教学,对计算机类的学生应侧重算法和设计,而对管理类的学生则应侧重具体应用.     

高职院校经济管理专业课程教学信息化改革探索

阐述了经济管理专业教学中引入信息技术的意义,从教师教学环节、学生学习环节、案例教学活动环节3个方面,深入探讨了信息技术在经济管理课程教学中的应用。     

试论物理教学中学生创新能力的培养方法

随着社会经济的快速发展,课程改革的不断深化,教学中由指导学生继承学习向引导学生创新学习转变已经是时代赋予我们教育工作者的起码要求,同样,物理教学中在创新学习框架下培养学生的创新能力不仅体现了时代的要求,更体现了物理教学自身发展的需要。     

让学生真正成为语文教学的“主体”

语文教学的主体是学生，只有重视对学生教学主体意识的培养和提高，使学生在教学生活中表现出高度的自主性、主动性，才能培养和造就出适应未来经济时代所需的高级人才。     

经济数学课程教学研究

以经济数学教学实践为基础,针对经济数学的教学现状,分析教与学中存在的问题,对该课程的教学提出几点建议,以激发学生的学习兴趣,培养学生的素质和应用能力,提高教学质量.     

经济法案例教学

经济法作为经济管理类专业的一门专业核心基础课程，内容繁杂，抽象且学时较少。在教学中运用案例教学法，充分提高学生的主动性和积极性，能够使这门课中抽象的理论具体化，最大限度地发挥学生在教学中的主体作用，提高经济法课的教学效果，最终达到准确运用经济法律基础知识，解决实际生活中的经济法律问题的目的。     

西方经济学教学实践之善用比较教学法

通过数十年的西方经济学教学实践和研究,可以看出为了帮助学生更好地学习和掌握西方经济学的基本原理和理论体系,培养学生的创新思维能力,教师应该在教学过程中善于运用比较教学法,以提高教与学的效果。     

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