Experimental Observables on Nuclear Liquid Gas Phase Transition

Progress on nuclear liquid gas phase transition （LGPT） or critical behavior has been simply reviewed and some signals of LGPT in heavy ion collisions, especially in NIMROD data, are focused. These signals include the power-law charge distribution, the largest fluctuation of the fragment observables, the nuclear Zipf law, caloric curve and critical exponent analysis etc.     

Applications of Transition Metals in Organic Synthesis and Polymerization

1 Results Classic oxidants require rigorous control of the experimental conditions added with the problem of lack of selectivity. Catalysis by transition metals with environmentally safe oxidants provides synthetic routes to minimize pollution by giving environmental benign by-products. Fe (Ⅵ) is a powerful and a selective oxidant with Fe(Ⅲ) as a by-product, while hydrogen peroxide is clean with water as the only by-product. Separation of sodium or potassium ferrates requires tedious processes. Associat...     

概率论与数理统计课程教学改革初探

结合教学实践,从教材和教学模式两方面探讨了概率论与数理统计的教学改革。     

一个Markov转移概率函数的确定

利用柯尔莫哥洛夫向前方程计算了电话呼唤次数的随机过程的转移概率函数。     

判别线性不等式组相容性的ALN法

本文将ＡＢＳ算法应用到线性不等式组上．给出了一种判别ＡＸ＜０的相容性的方法．     

二维正态分布矩形区域概率质量的局部单调性

研究了二维正态分布矩形区域概率质量当矩形区域中心沿某特定方向平移时的局部单调性。同时给出了一簇矩形区域,其中任一矩形区域的概率质量对正态分布相关系数的绝对值具有局部单调性。     

伴随矩阵的性质

讨论了伴随矩阵在对称、反对称、正定、半正定、正交、相似和特征值等方面的性质。     

半参数模型约束条件下估计量的统计诊断

利用最小惩罚二乘原理构造加权惩罚平方和，导出了约束条件下，半参数模型中正规化矩阵正定时半参数平差的计算方法，用直接法得到了参数和半参数的估计量，并将此方法引入测绘领域，给出了相应的公式。     

The Experimental and Theoretical Research of “Local Resonance“ in Ultrasonic Honing System

In 1982, Professor Fang Guoliang found the “Non full resonance“ phenomenon in a tool system while he use the thin-long tool ultrasonically machining deep-small hole. He called it as “local resonance“. Also this “Non full resonance“ phenomenon was discovered in the ultrasonic drilling and the ultrasonic honing system later. To its mechanism, professor Fang thought that the coupling of long-thin tool bar and driving system is weak, so the tool bar can vibrate independently, but the quantitative relation betwe...     

多个矩阵之和与积的特征值关系问题

给出了3个以上矩阵之和与积的特征值之间的若干等价关系.