高保密性的时变参数混沌同步通信方法

提出了一种时变参数混沌同步保密通信方法,极大地提高了混沌同步的通信保密性,使目前的各种破译手段均无法破译该方法;并基于Chua电路进行了仿真。采用该方法进行混沌同步通信,击败了目前各种破译手段的攻击,证实了其高保密性。     

Normalité asymptotique d'estimateurs convergents du mode conditionnel

We state sufficient conditions for asymptotic normality of convergent estimates of the conditional mode, irrespective of data dependence, and give an application to α-mixing stationary processes.     

Nonconglomerative coherent conditional probabilities in statistical inference

Noteworthy connections among conglomerability, countable additivity and coherence are discussed in detail, reaching the conclusion that nonconglomerable conditional probabilities must not be doomed and play a significant role in statistical inference. Extended and updated version of a contributed paper presented at the International Conference on “Information Processing and Management of Uncertainty in knowledge-based systems”, IPMU 2004, Perugia, Italy.     

分整、协整及时变波动建模理论新进展——兼论诺贝尔经济学奖得主Granger和Engle的工作

综合分析近20年来经济计量建模理论在分数维长记忆时间序列的分析建模、协整(同积)理论的建立以及刻画经济金融波动的时变条件异方差过程的分析建模三个方面发生的重要变化以及在这些领域,Granger和Engle做出的极其重要贡献,并提出新的发展方向和领域。     

Graphical Models for Composable Finite Markov Processes

Abstract.  Composable Markov processes were introduced by Schweder (1970) in order to capture the idea that a process can be composed of different components where some of these only depend on a subset of the other components. Here we propose a graphical representation of this kind of dependence which has been called 'local dependence'. It is shown that the graph allows to read off further independencies characterizing the underlying Markov process. Also, some standard methods for inference are adapted to exploit the graphical representation, e.g. for testing local independence.     

如何保障本科毕业论文质量

毕业论文是体现本科教学质量的一个重要实践环节,按照制药工程专业和化学工程与工艺专业培养学生的特点,加强本科毕业论文的管理与规范,从选题、毕业论文进行中的过程管理与检查、撰写毕业论文、答辩与成绩评判采取适当的措施和管理办法,可以有效地保障和提高本科毕业论文质量.     

COVARIANCE MODELS FOR LATTICE DATA

Given observations on an m × n lattice, approximate maximum likelihood estimates are derived for a family of models including direct covariance, spatial moving average, conditional autoregressive and simultaneous autoregressive models. The approach involves expressing the (approximate) covariance matrix of the observed variables in terms of a linear combination of neighbour relationship matrices, raised to a power. The structure is such that the eigenvectors of the covariance matrix are independent of the parameters of interest. This result leads to a simple Fisher scoring type algorithm for estimating the parameters. The ideas are illustrated by fitting models to some remotely sensed data.     

副词“才”主观量表达的语义基础

副词“才”表示“方始”,即在某个时间点,某个事件从无到有。强调事件在这个时间点而不是这个时间点之前实现,并且,从事件实现到说话时的时间段相对较短。当客观时间量在句子中出现,“才”进一步虚化表达主观量:前指表达主观大量,后指表达主观小量。“T才P”是限制条件的肯定P,这个条件就是T,用于肯定句可以用转折来表示,而条件之外则不能肯定P。名词语进入“才 名词语”这一句法格式的条件是:名词本身有明显的序列推移性或者在某种特定条件下能进入某个排序中。     

测谎结论的证据资格及其规范

现行三大诉讼法均未明确规定将测谎结论作为证据种类单列,诉讼法学界对此也存有争议。首先通过对否定测谎结论作为证据的观点进行反证分析后认为:测谎结论具有证据的客观真实性和关联性,可作为诉讼证据使用;再将测谎结论与司法精神病鉴定进行对比分析后认为,测谎结论可归于证据种类中鉴定意见一类。最后,建议对测谎技术作如下规范:一是制定行业标准,严格规范测谎员的资格认证;二是加强对测谎鉴定机构的监管。     

Non-parametric estimation of the conditional mode

The problem of estimating the mode of a conditional probability density function is considered. It is shown that under some regularity conditions the estimate of the conditional mode obtained by maximizing a kernel estimate of the conditional probability density function is strongly consistent and asymptotically normally distributed.