计算反应标准平衡常数的一个公式

介绍了计算几种类型反应的标准平衡常数的一个总公式K反应^-＝(K反应物^-)^n／(K生成物^-)^m，利用此公式，解题快速，计算准确，可直接算出一系列K反应^-，根据K反应^-的大小，可以判断出该反应进行的可能性.根据需要还可以绘制出各种前人还没有绘制出的表格，直接用于指导教学及科研．     

溅射时氧分压对LaNiO3-x薄膜性能的影响

在较低的衬底温度(260 0C)和不同氧分压下,采用射频溅射在(111)Si衬底上制备出了具有(100)择优取向的 LaNiO3薄膜. SEM分析表明薄膜具有光滑连续的表面和均匀的晶粒尺寸. I-V特性表明薄膜均具有金属导电性,且随着氧分压的增加,电阻率逐步降低并达到一个稳定值 10Ω@μ m.实验结果同时表明,随着氧含量的增加,Ni、 La含量比单调增大,并且当溅射气氛中的氧气分压在 20%～30%范围时,Ni、 La含量比为 1:1而且比较稳定.当氧气分压为30%时,薄膜的晶面间距达到最小值.制备 LaNiO3薄膜的最佳氧气分压应该控制在 30%左右.     

基于恒模算法的DS-CDMA系统下行信号接收机

本文研究多径频率选择性衰落信道下,DS-CDMA系统下行信号检测技术。提出了一种新的基于恒模算法的检测方法。将均衡器的输出投影到一个未使用的扩频序列上,以结果为零作为约束条件,本文分别给出了批处理和自适应的线性约束恒模算法。本文方法克服了常规恒模算法无法保证收敛到期望用户的缺点,并且对周期和非周期扩频系统都有效。仿真结果验证了本文方法具有良好的检测性能,可以在克服信道衰落的同时抑制多址干扰。     

Investigation on gradient dielectric characteristics of bamboo (Dendrocalamus strictus)

Dielectric constant (ε′) and tan δ dependence on distance from the outer most skin to the center of bamboo has been determined. Dielectric measurements have been done in the temperature range from 24 to 120°C and in the frequency range from 4 to 100 kHz. Gradient behavior in dielectric constant (ε′) and tan δ has been found in bamboo. It has also been observed that the dielectric constant (ε′) and tan δ increase with the increasing temperature and decrease with the increasing frequency. Relaxation times have been calculated for the four samples at 80, 90, and 100°C temperatures, which show that relaxation time decreases with the increase of temperature due to the increased molecular mobility. A continuous increase in the hardness from the center 48 to the outer surface 70 and density from 0.45 to 0.80 g/cc has been observed. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 3489–3494, 2006     

多功能光纤二次套塑线设计

在研制偏置牵引法控制光纤余长的基本型光纤二次套塑线的基础上，增添设备内容，扩展功能，设计出能满足多种产品科研实验及小批量生产需要的多功能光纤二次套塑生产线， 根据产品所需，将诸多设备内容方便灵活地组合成多种产品批量生产专用的二次套塑生产线。     

Developmental differences in the effects of repeated interviews and interviewer bias on young children's event memory and false reports.

The present study investigated developmental differences in the effects of repeated interviews and interviewer bias on children's memory and suggestibility. Three- and 5-year-olds were singly or repeatedly interviewed about a play event by a highly biased or control interviewer. Children interviewed once by the biased interviewer after a long delay made the most errors. Children interviewed repeatedly, regardless of interviewer bias, were more accurate and less likely to falsely claim that they played with a man. In free recall, among children questioned once after a long delay by the biased interviewer, 5-year-olds were more likely than were 3-year-olds to claim falsely that they played with a man. However, in response to direct questions, 3-year-olds were more easily manipulated into implying that they played with him. Findings suggest that interviewer bias is particularly problematic when children's memory has weakened. In contrast, repeated interviews that occur a short time after a to-be-remembered event do not necessarily increase children's errors, even when interviews include misleading questions and interviewer bias. Implications for developmental differences in memory and suggestibility are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

偏心介质棒加载圆波导模式分析

本文基于柱谐基函数展开,对偏心介质棒加载的圆波导模式进行分析.利用Bessel函数的加法定理,在边界上进行场匹配,获得关于诸传播常数K_z的方程.对方程进行级数截断后,可以方便地解出该波导的各种传播模式,具有收敛性可靠,结果精确、计算量小的特点,比PMM和LSBRM更为可靠易行.     

Estimation of the Lipschitz Norm with Neural Networks

This paper describes a method to estimate the Lipschitz gain of an operator through identification with neural networks. It is shown that through simple manipulation of the network coefficients, the Lipschitz constant could be estimated. Illustrations and applications are also given to show the effectiveness and usefulness of this estimation scheme.     

一种简便快速的电子衍射谱分析方法

本文根据特征平行四边形法和N/(1/2)比值法提出了一种简便快速的电子衍射谱分析方法——图表法,由于它以一些简单的操作取代了常用分析法的数据测量和计算过程,因此具有简便、快速、可靠性高等优点。