基于语义分析的设计实体智能搜索

本文提出了在设计联盟组织过程中实现互联网上设计实体智能搜索的方法。根据对互联网上设计实体搜索问题的分析建立了设计实体智能搜索策略；定义了提取设计实体查询向量和描述向量的语义分析规则；提出了基于语义分析的设计实体智能搜索算法；最后编程实现了各项功能。     

Visual discovery of the correlation between BGP routing and round-trip delay active measurements

Inter-domain routing data and Internet active probing measurements are two types of information commonly available in huge datasets and subject to extensive, focused analysis. However, the study of the correlation between these two complementary types of information still remains one of the most challenging problems in today’s research in networking. In this paper we describe a metaphor for the visualization of the interplay between the routing information exchanged via BGP and the round-trip delay measurements collected by several geolocated probes. We implemented a prototype based on the above metaphor. Our prototype highlights both the Autonomous System topology and the latency associated with each AS-path over time. Further, it shows how probes are partitioned into clusters associated with each border gateway, based on observed traffic patterns. The resulting visualization allows the user to explore the dynamics of the correlation between the two types of information.     

耐盐性树脂PAA的合成及应用研究

以丙烯酸-丙烯酰胺为单体，过硫酸钾为引发剂，N，N-亚甲基双丙烯酰胺为交联剂。水浴阶梯升温共聚合成耐盐性树脂，采用正交试验通过分析，研究了主要因素对产物性能的影响，确定较佳反应条件：T=50℃(2h)～65℃(3h)，单体配比nAM：nAA=1：11，单体中和度[N]=90％～95％。引发剂浓度[I]=0．3％，单体浓度[M]=30％～35％，交联剂浓度[C]=0．025％～0．03％，并将此树脂作为缓释剂应用于固载二氧化氯中，取得了良好的效果。     

Catkin liked nano-Co3O4 catalyst built-in organic microreactor by PEMOCVD method for trace CO oxidation at room temperature

In this paper, tricobalt tetraoxide (Co₃O₄) catalyst was coated on the polydimethylsiloxane microchannel by the plasma-enhanced metal-organic chemical vapor deposition technology. The obtained Co₃O₄ film was characterized by SEM, XRD, XPS, and TEM, and the results show that the as-deposited Co₃O₄ film was initially composed of many cauliflowers-shaped microclusters. Also, the microcauliflower was transformed from an amorphous phase to a crystal phase when the Co₃O₄ film was treated by Ar and O₂ plasma for more than 20 min, and the crystal lattice line occurred on the surface of nano-sized-Co₃O₄ particles. Meanwhile, the interface of Co₃O₄ particles with diameter between 3 and 12 nm became obvious and some nano-catkin structures were also formed on the Co₃O₄ film. The ratio of Co³⁺/Co²⁺ in the spinel-type Co₃O₄ was nearly 2, and the nano-particles predominantly expose their {311}, {111}, and {220} planes. These morphologies and structure characteristics were found to be ideal for increasing the catalytic activity efficiency of Co₃O₄ for CO oxidation, and the catalytic stability of Co₃O₄ coated on the organic microreactor lasted nearly 85 h for trace CO oxidation at room temperature.     

可动态重构的旋翼飞行器设计与运动特性分析

针对旋翼飞行器因机体结构受运动路径中空间变窄限制而无法连续穿越的问题,研究设计了一种可动态重构的旋翼飞行器,通过改变机体构形实现对空间变化的运动应对,提高飞行器在复杂环境下连续运动作业的能力.该系统采用链式模块化结构,通过旋转关节实现构形的2维变化.根据机体结构特点和运动控制方式,基于D-H(Denavit-Hartenberg)规则推导了空间变换矩阵,求解了变化重心,建立了机体运动学模型.基于几何、动力和控制响应约束,提出了构形变换的求解方法,并针对该模型给出了边界条件.最后进行了飞行器稳定性、操纵性及临界构形实验.结果 表明,构形变换过程中,飞行器姿态稳定,无明显突变,各轴向最大变化量在4°以内;濒近临界构形时飞行器操控顺畅,跟踪控制响应能够在0.1s内完成.实验验证了姿态可控的临界构形角度集为{180°,180°,113°},通过几何运算,采用固定航向方式,飞行器的通过半径可缩小21.89％,结合航向控制的方式,最大通过半径可缩小67％.飞行器具备稳健完成动态重构和通过窄间隙的能力.     

合成绝缘子内部缺陷的超声检测

针对合成绝缘子挂网运行后出现的界面击穿、芯棒脆断问题，研究了组成合成绝缘子各材料的声学特点及用超声波进行检测的可行性，采用的方法可实现对界面φ0.5mm圆孔气隙的检测；还研究芯棒机械强度下降与其声速变化的关系，得出了超声可以应用到实际的绝缘子检测工作中的结论。     

INSIGMA: an intelligent transportation system for urban mobility enhancement

Intelligent Transportation Systems (ITS) aim to improve safety, mobility and environmental performance of road transport. The INSIGMA project provides a fresh look at the possible innovations in this field, by enhancing the functionality and accuracy of ITS in urban environments. This paper describes the architecture, sensors, processing algorithms, output modules and advantages of the developed system. A comparison of existing ITS systems has been provided as background. Special attention has been given to performance and privacy issues, as the system includes social aspects such as location monitoring.     

网络可靠性分析方法研究

总结了进行网络可靠性分析的一般步骤,比较了传统的网络分析方法的优缺点,重点论述了一种基于有序二叉决策图的方法,在考虑失效节点的网络可靠性分析中的应用。