Reflected BSDE of Wiener-Poisson type in time-dependent domains

In this paper we study multidimensional reflected backward stochastic differential equations driven by Wiener-Poisson type processes. We prove existence and uniqueness of solutions, with reflection in the inward spatial normal direction, in the setting of certain time-dependent domains.     

基于耦合Duffing振子和Van der pol振子系统的微弱信号检测研究

传统的微弱信号检测在检测信噪比较低的信号时效果不理想,基于此提出了一种基于Duffing振子和Van der pol振子的耦合非线性系统,建立了非线性耦合模型,详述了耦合系数对耦合非线性系统的影响。采用Simulink数值仿真的方法,分析了Duffing振子和Van der pol振子耦合非线性系统的动力学行为,阐述了基于相平面变化进行微弱信号检测的工作原理。并且具体分析了耦合系统在色噪声背景下的微弱信号检测效果,取得了很好的效果。     

Preliminary Inspection of Multivariate Data

A simple approach to the direct inspection of multivariate data is discussed in the context of a specific data set.     

Hierarchical Bayesian models to assess between- and within-batch variability of pathogen contamination in food

Assessing within-batch and between-batch variability is of major interest for risk assessors and risk managers in the context of microbiological contamination of food. For example, the ratio between the within-batch variability and the between-batch variability has a large impact on the results of a sampling plan. Here, we designed hierarchical Bayesian models to represent such variability. Compatible priors were built mathematically to obtain sound model comparisons. A numeric criterion is proposed to assess the contamination structure comparing the ability of the models to replicate grouped data at the batch level using a posterior predictive loss approach. Models were applied to two case studies: contamination by Listeria monocytogenes of pork breast used to produce diced bacon and contamination by the same microorganism on cold smoked salmon at the end of the process. In the first case study, a contamination structure clearly exists and is located at the batch level, that is, between batches variability is relatively strong, whereas in the second a structure also exists but is less marked.     

“技术侦查”法律解释若干问题评析——以法律解释学为视角

新《刑事诉讼法》在"侦查"一章中增加了"技术侦查措施"一节,将一直处于秘密隐晦状态的"技术侦查"措施法制化,体现了保障人权与控制犯罪的平衡。然而法典相关规定过于抽象、概括,亦存在立法疏漏。为使立法得以贯彻实行,法律解释发挥着不可替代的作用。但是,从实然层面分析,有关"技术侦查措施"之法律解释条文问题丛生,就适用案件范围、批准条件与程序、种类等问题的解释要么照搬法律条文,要么逾越立法自行创设制度。通过对"技术侦查措施"之法律解释条文进行批判性分析,以点带面,揭示整个刑事诉讼法揭示存在的问题并进行反思。     

一种基于客户行为时序分析的反洗钱异常交易识别方法

可疑交易报告制度是打击洗钱活动的一项基本机制,如何有效甄别可疑交易是金融机构和金融情报中心面临的一个技术难点。为辅助反洗钱分析人员从海量金融交易信息中甄别客户异常交易,本文提出一种预测误差和统计处理综合法--CPEST,通过分析客户前后行为的一致性来发现异常。CPEST建立客户行为模型,根据预测误差对客户行为进行时点异常检验,并在此基础上构造一个窗口检验,以提高对涉嫌洗钱行为的识别能力。本文在支持向量回归和核密度估计等具体实现手段的基础上,运用CPEST对实际交易和仿真数据进行分析,结果表明该方法的有效性和可行性,具有应用推广价值。     

Generalized Scan Statistics for Disease Surveillance

In applying scan statistics for disease surveillance, it would be valuable to have an integrated model that simultaneously includes environmental covariates and spatial correlation. In this paper, a generalized scan statistics under quasi‐likelihood functions is proposed to address this issue. We use a two‐step estimation process to obtain estimates of coefficients and adapt a bootstrapping method for the minimal p‐value to address the multiple‐testing problem. Under suitable conditions, the proposed method is consistent and can control the type I error rate. Simulations and applications to real data sets are used to evaluate the method.     

刑事沉默权的应用与刑事侦查行为的改进

刑事沉默权与刑事侦查行为同属刑事侦查工作的两个方面.应用刑事沉默权对刑事侦查行为虽然具有一些消极作用,但从总体上看,是有利于提升刑事侦查行为,推动刑事侦查工作的.我们应当在刑事侦查工作中有限制地应用刑事沉默权,使刑事侦查工作既能够有力地打击犯罪,同时也能体现人文精神.     

试析康有为《大同书》对《回顾》的吸纳及改造

在康有为的《大同书》中可以找到贝拉米虚构的新社会的"影子",他们都对现实社会进行了深刻的揭露和批判,主张未来社会的公有制、有计划生产和分配,详尽地设计了未来理想社会中人们的劳动、消费、休息等各个方面的社会制度,都十分关注妇女问题、婚姻问题和儿童教育问题。他们的未来社会理想都是以进化论和天赋自由平等权为理论基础的。可见,在《大同书》中康有为对贝拉米的《回顾》一书有多方面的吸纳与改造。     

A characterization of the independence - distribution - preserving covariance structure for the multivariate maximum squared - radii statistic

Necessary and sufficient conditions on the observation covariance structure and on the set of linear transformations are given for which the distribution of the multivariate maximum squared - radii statistic for detecting a single multivariate outlier is invariant from the distribution assuming the usual independence covariance structure. Thus, we extend the work of Baksalary and Puntanen (1990), who have given necessary and sufficient conditions for an independence-distribution-preserving covariance structure for Grubbs' statistic for detecting a univariate outlier. We also extend the work of Marco, Young, and Turner (1987) and Pavur and Young (1991), who have given sufficient conditions for an independence-distribution-preserving dependency structure for the multivariate squared - radii statistic.