AVS-P3音频解码器的算法优化

基于嵌入式系统应用中实时解码对速度和存储空间的要求，通过分析AVS—P3解码器原理及其技术特点，以AV3 release version1为蓝本对AVS音频解码器进行结构和算法上的优化．其中时频变换模块对intIMDCT算法进行分析与处理，量化模块定点化处理和AVS解码器熵解码模块的实现算法提出了新的方法．经过ARM9平台测试，在音乐质量没有受到损害的前提下，解码速度比原来提高10倍以上，存储空间也减少了一半以上．     

苯胺分子结构和红外光谱的密度泛函研究

用Onsager模型和密度泛函BLYP方法在6-31G·基组水平上对苯胺分子的几何构型进行了全优化,计算了最优构型的红外光谱.将计算所得的苯胺红外光谱与其Sadtler标准谱进行了比较,用自然键轨道(NBO)方法讨论了氨基的结构,并对红外光谱进行了归属,确定了氨基在苯环上的结构.结果表明,该Onsager模型适于研究液态苯胺分子的结构和红外光谱.     

激光场的空间非均匀性对阈上离化的影响

本文在基本态模型中计及激光场的空间非均匀性,得到了与实验相吻合的结果.     

MONOTONIZATION IN GLOBAL OPTIMIZATION

A general monotonization method is proposed for converting a constrained programming problem with non-monotone objective function and monotone constraint functions into a monotone programming problem. An equivalent monotone programming problem with only inequality constraints is obtained via this monotonization method. Then the existing convexification and concavefication methods can be used to convert the monotone programming problem into an equivalent better-structured optimization problem.     

A new analytical model for thermal stresses in multi-phase materials and lifetime prediction methods

Based on the fundamental equations of the mechanics of solid continuum, the paper employs an analytical model for determination of elastic thermal stresses in isotropic continuum represented by periodically distributed spherical particles with different distributions in an infinite matrix, imaginarily divided into identical cells with dimensions equal to inter-particle distances, containing a central spherical particle with or without a spherical envelope on the particle surface. Consequently, the multi-particle-（envelope）- matrix system, as a model system regarding the analytical modelling, is applicable to four types of multi-phase materials. As functions of the particle volume fraction v, the inter-particle distances dl, d2, d3 along three mutually per- pendicular axes, and the particle and envelope radii, R1 and R2, respectively, the thermal stresses within the cell, are originated during a cooling process as a consequence of the difference in thermal expansion coefficients of phases rep- resented by the matrix, envelope and particle. Analytical-（experimental）-computational lifetime prediction methods for multi-phase materials are proposed, which can be used in engineering with appropriate values of parameters of real multi-phase materials.     

数列在解特殊方程与不等式中的灵活运用

中学课本中方程和不等式的解法多是常规方法,用其来解一些结构比较特殊的方程与不等式就难以奏效,或过于繁锁.本文就一些方程及不等式采用化归、转化的思想,充分利用数列有关性质来解来,供读者参考.……     

物理学家名言录

 (1)品质--爱因斯坦“不管时代的潮流和社会的风尚怎样,人总是可以凭着自己的高贵品质,超脱时代和社会,走自己正确的道路,他们不追求物质的东西,他们追求理想和真理。得到了内心的自由和安宁”.