冲切破坏理论在浅埋溶洞顶板的利用探讨

研究冲切破坏理论在浅埋溶洞顶板的利用，对已有的经验和理论公式进行完善和修正，使得在基础设计和地勘工作中对溶洞顶板的取舍和利用程度的判断更为准确客观。     

我国证券市场会计信息质量博弈关系的分析

使用博弈理论分析了上市公司、会计师事务所（CPA）之间会计信息质量的博弈，求出混合战略纳什均衡解，讨论了纳什均衡解的存在性。得到了强化事后监管力度和加强综合治理是现阶段提高会计信息质量的保证之结论。     

主体的对象化与对象的主体化 --兼论《1844年经济学哲学手稿》对当代美学文艺学的现实意义

主体的对象化与对象的主体化是两个互动、互补的动态化过程，前强调历史主体性和实践基础，其理论渊源于马克思《1844年经济学哲学手稿》；后则强调主体的自主性和独立性，在此基础上还深入研究了一种“主体间性”理论。在历史主体性和实践论基础上，“主体间性”理论对当代美学艺学产生了巨大影响，尤其是两个动态化过程中产生的超越性的二元思维和多元思维，极大地推动了当代美学艺学的思维方式转型。     

现代教学论：对象和课题

在教学论研究对象问题上，主要有两种不同的观点，其一，教学论研究教养的课题；其二，教学论研究教学规律。本以教学论学科形成史为线索，分析了与这两种观点相关的各种不同观点产生的渊源与局限性，对教学论的研究对象进行再认识，在此基础上论述现代教学论应予关注的主要课题。     

组合投资理论分析及应用研究

在对现代组合投资理论分析的基础上，结合我国证券市场的实际，提出了有效规避市场系统风险和各单项资产非系统风险的组合投资模型，对实际投资具有良好的指导作用。     

Elastic wave scattering by two-dimensional periodical array of cylinders

We extend the multiple-scattering theory (MST) for elastic wave scattering and propagating in two-dimensional composite. The formalism for the band structure calculation is presented by taking into account the full vector character of the elastic wave. As a demonstration of application of the formalism we calculate the band structure of elastic wave propagating in a two-dimensional periodic arrangement of cylinders. The results manifest that the MST shows great promise in complementing the plane-wave (PW) approach for the study of elastic wave. Foundation item: Supported by the National Natural Science Foundation of China (No. 10174054) Biography: Mei Jun (1977-), male, Master candidate, research direction: the multiple scattering theory     

Investigation for Electromechanical Coupling Unstability of Rolling Mill

The unsteady condition of rolling Mill vibration that was caused by flexural vibration of strip was investigated. The parametric flexural vibration equation of rolled strip was established. The parametric flexural vibration stability of rolled strip was studied and region of stability and unstability was determined based on Floquet theory and perturbation method. The flexural-vibration of strip was unstable if the frequency of variable tension was twice as the natural frequency of flexural-vibration strip. ...     

Unsteady-State Grinding Technology (I) Theoretical Generalization and Research on Grinding Mechanism

In conventional grinding theory, it is obvious that there must be a very high hardness difference between grains of the grinding wheel and workpieces. The best grinding wheels are those giving the lowest “natural limiting surface roughness“ while cutting at appreciable plunge velocities. With the development of new materials and new machining processes, conventional theories of grinding techniques are no longer suitable to explain many phenomena in the course of grinding procedures. In dealing with precisio...     

Analysis of EET on Ca increasing the melting point of Mg17Al12 phase

The present investigation showed that the additions of Ca to the alloy AZ91 were mainly dissolved into the Mg17Al12 phase and increased its melting point and thermal stability, which would have great effects on the high- temperature properties of AZ91 alloy. The empirical electron theory (EET) of solid and molecules was used to calculate the valence electron structures (VES) of Mg17Al12 intermetallic compound with and without Ca addition. The results showed that Ca dissolving in Mg17Al12 phase increased the strength of bonds that control the thermal stability of Mg17Al12 phase. Additions of Ca also made the distribution of the valence electrons on the dominant bond network more uniform in the whole unit cell of Mg17Al12. The theoretical conclusions well account for the experimental results.     

基于建构主义理论的中学信息技术教学

考虑到建构理论以学生为中心这个特点 ,通过问卷形式 ,从建构主义理论中学习环境的四大要素(即情境、协作、会话、意义建构 )出发 ,进行分析研究 ,发现现在的中学信息技术课堂是适合 ,而且极需要推行建构主义理论的 ,并就目前的客观条件 ,提出了一个逐步推行建构主义理论的可行性方案 .