传递对准中基准信息时间延迟的估计与补偿

针对传递对准过程中基准信息时间延迟对传递对准精度的影响,给出了一种基于角速率积分最小方差曲线拟合的时间延迟估计方法.首先,记录一段时间内主、子惯导陀螺传感器的输出数据,并对该数据进行积分.然后,定义基准信息可能存在的时间延迟的最大范围,并在该范围内对主惯导数据进行逐点移位,计算曲线各对应点的差的平方并求和.最后,通过最...     

Adaptive early termination of fast mode decision in MVC based on inter-view correlation

Variable size motion estimation (ME) and disparity estimation (DE) are employed to select the best coding mode for each macroblock (MB) in the current joint multiview video model (JMVM).This technique achieves the highest possible coding efficiency,but it results in extremely large computation complexity which obstructs the multiview video coding (MVC) from practical application.This paper proposes an adaptive early termination of fast mode decision algorithm for MVC.It makes use of the coding information o...     

OFDM系统中导频辅助信道估计算法的误差性能比较研究

对正交频分复用(OFDM)系统中的两种导频辅助信道估计方法，即最大似然估计(MLE)和贝叶斯最小均方误差估计(MMSEE)，在估计误差性能方面的特性进行了详尽的比较研究。理论分析及计算机仿真试验表明，当信道噪比较低时，MMSEE有比MLE更好的估计误差性能，但有比MLE复杂得多的计算复杂度。而当信道信噪比较高或插入导引符号序列数目足够多时，MMSEE与MLE误差估计性能基本一致。     

椭球约束下混合模型的线性极小极大估计

给出在椭球约束下带随机信息的混合模型的线性极小极大估计b(2 ) ,讨论了b(2 ) 在MDE-Ⅱ准则下相对于经典回归模型在椭球约束下的线性极小极大估计b(1) 的优良性 ,并得出了b(2 ) 比b(1) 优的一个充分条件     

Robust parameterisation of ages of references in published research

The purpose of this research is to illustrate the use of the gamma distribution to model the ages of references in published research, and to demonstrate that the two gamma distribution parameters characterise a field of research in a manner that is complementary to and more nuanced than the Price Index or mean age of references.Minimum Distance Estimation is shown to produce robust estimates of the gamma distribution parameters because of the insensitivity of the Kolmogorov–Smirnov test in the tails of the distribution.Using a sample of 816 articles from 26 different journals across six subject areas, it is shown that the gamma distribution is at least as good as a lognormal distribution to model the ages of references in research articles.The two gamma distribution parameters indicate the rate of publication of new knowledge within the respective discipline and the citing behaviour in terms of the recency of references. Interpretation of these gamma distribution parameters enables a more nuanced and granular interpretation of the distinctiveness of disciplines, sub-disciplines, formats of publication and the distribution of references within articles than possible using the Price Index, half-life or mean age of references.     

《管子·揆度》篇经济思想对中国会计文化的贡献

《管子·揆度》篇提出了大夫已散其财,万人得受其流;国之财物,尽在贾人;国无游贾,贵贱相当;五官之数,不籍于民;富能夺,贫能予;以寡为多,以狭为广;乡吏视事,葬于公壤;五其本,远近通的思想,对中国会计文化建设的贡献在于适当消费、繁荣经济、运用杠杆、调节经济、管理商业、财政收入、鼓励生产、开发资源、优抚到位、体恤人民、外贸经济、满足需要。     

广义线性模型极大似然估计弱相合性的数值模拟

广义线性模型是经典线性模型的自然推广,它是一类应用广泛的统计模型.选择Probit模型,利用matlab编程,通过数值模拟的方法验证了广义线性模型的极大似然估计的弱相合性.     

约束条件下的广义最小二乘估计

本文仿造约束最小二乘估计和广义最小二乘估计的推导方法．给出约束条件下的广义最小二乘估计。     

二项分布中p~2的矩估计与极大似然估计

基于二项分布B(n,p)总体,给出了未知参数p2的矩估计和极大似然估计,并讨论了估计量的无偏性。     

P,Q对称熵损失函数下的二项分布的参数估计

在P,Q对称损失函数下,讨论二项分布参数θ的Bayes估计及其容许性,并给出了多层Bayes估计具体形式和Bayes置信下限.