基于多Agent的入侵快速响应系统

从分析信息安全的现状入手,设计了一个基于多Agent的快速入侵响应系统CI2D&R。结合该系统的网络部署设计,介绍了该系统两个主要组成部分安全间谍和安全警卫的主要功能,并提出了该系统的分层体系结构,分析了系统的主要组成部件及其相应功能,论述了该系统的数据流和接口设计及解决Agent可靠运行的方法。     

Theory & Methods: Incomplete detection in enumeration surveys: Whither distance sampling?

This paper considers the problem of undercount or incomplete detection in enumeration surveys that are intended to estimate population counts or population abundance. The problem is widespread in ecology but also occurs in other surveys: the census undercount is a well-known example of the problem. After framing the problem in a general context, the paper focuses on line transect sampling and the distance sampling method which has been widely applied in surveys of ecological populations. It describes distance sampling data and presents a graphical derivation of the distance sampling estimator. The graphical analysis leads to a new expression for the distance sampling estimator which gives useful insights into the nature of the estimator. The paper discusses the uniformity assumption on which distance sampling depends and describes the properties of the distance sampling estimator when uniformity does not hold. It then explores the relationship between this and other evaluations of distance sampling and mentions briefly some statistical ideas for treating the general incomplete detection problem. The paper concludes with some reflections on general insights arising from the research.     

刑事诉讼中的程序正义与权力法治化

权力法治化在刑事诉讼中的关键是审前程序,其中又以侦查程序中的权力法治化和起诉环节权力法治化为最关键。“程序正义”是现代司法的基本理念,是诉讼制度文明化、人性化的必然要求和重要表现,而程序正义的关键是程序中的权力的正当性,可以说,权力的正当性是程序正义的基础,而权力正当性只能通过法治化来实现。     

When is a curve an outlier? An account of a tricky problem

ABSTRACT The analysis of a set of data consisting of N short (≤20 observations each) multivariate time series, where the observations are irregularly spaced and where observations for the different components of each multivariate series are observed at different times, is discussed. With the increased use of automatic recording devices in many fields, data such as these, which are of course samples from smooth response curves, are becoming more common. In this application, which was a clinical trial comparing two cements for use in hip replacement surgery, the key to the analysis was in recognizing that the interest lay in the degree to which the five curves representing a patient's vital signs deviated from baseline (i.e., normal for that patient) during surgery. This enabled the statisticians to define appropriate response variables. The analysis included Rosseeuw's (1984) technique for the identification of multivariate outliers and logistic regressions to identify any effects on the process producing the outliers due to treatment or covariates.     

U.S. Aviation Regulations Increase Probability of Midair Collisions

A purely stochastic Monte Carlo model is used to compare the relative midair collision course probabilities and mean closing velocities of four systems of rules for aircraft cruising altitudes as a function of altitude error: (1) current U.S. federal rules, (2) random altitudes, and (3) two proposed alternatives to the current rules. This model increments error while: (1) counting collisions among cruising pairs of aircraft following the four rules being tested on random headings between randomly placed airports, and (2) calculating mean closing velocities for each rule. The calculations verify that: (1) federal rules increase collision course probabilities by about four times more than for a chaotic system of aircraft cruising at randomly selected altitudes, (2) risk is directly proportional to the level of compliance, and (3) mean closing velocities resulting from the current rule are slightly less than for random altitudes, while being almost twice as high as for the proposed rules. High closing velocities are shown to increase the collision probability.     

前景化理论与翻译研究

本文从风格和意义两个角度分析前景化理论在翻译实践中的运用,着重谈到有些前景化语言的不可译性问题以及如何在翻译实践中辨识前景化语言。旨在为译者提供一种新颖的翻译理论基础,为促进理论与实践具体结合方面起到方法论的作用。     

毛细管电泳法直接分离检测水溶液中Cd2+、Cu2+、Ni2+、Zn2+的研究

建立了毛细管电泳法直接分离测定水样中Cd2 、Cu2 、Ni2 、Zn2 金属离子的方法,研究了缓冲溶液种类、浓度、pH值、有机添加剂等对分离的影响,对分离条件进行了优化.在波长223nm,分离电压25kV,pH=4.30,150 mmol/L HAc-NaAc乙醇(20%)缓冲溶液中,使Cd2 、Cu2 、Ni2 、Zn2 与邻二氮菲形成的配合物在4 min内得到了较好的分离,迁移时间和峰面积的相对标准偏差分别小于0.95%和3.5%,且浓度与峰面积之间具有良好的线性关系.     

一种视频图像中运动目标检测方法研究

针对序列图像中的运动目标检测问题,在独立分量分析的基本理论和算法的基础上,提出采用基于正交对称矩阵的快速定点算法对实际视频图像中的运动目标进行运动检测的方法。实验结果表明:该方法不仅能检测运动轨迹,还能提取运动目标的轮廓,并判断运动方向,是一种有效的运动目标检测方法。     

基于FPGA的高速图像预处理系统设计

介绍了一种用单片FPGA实现的实时、多任务、高速图像处理系统。该系统承担着提高信噪比、压缩数据量、Stokes参数观测和仪器及观测模式控制等任务。针对一个星载系统,采用了核心逻辑片内冗余、设计了相应的冗余管理线路等可靠性设计技术,采用了放置片内测试和校验模块等可测性设计技术,使系统工作时钟达40 MHz,图像处理速率达100 Mbps。     

采用CCSK承载非同步随机接入信息的方法

未来的移动通信系统要求提供的数据传输速率将高达100Mb/s以上,支持的业务也将从语音业务扩展到多媒体业务(包括实时的流媒体业务)。该文提出采用m序列的不同循环移位来构建CCSK序列,并在前导CAZAC序列上叠加CCSK序列,以用于隐含承载接入信息。为了减少两个序列之间的相互影响,调整两种序列之间的能量比例以及采用干扰消除,将显著提高两种序列的检测性能。