飞行器结构特征提取与识别

针对天空背景下的飞行器，从目标的结构特征出发，采用SUSAN算子将目标从背景中提取出来；结合边缘信息，利用灰度重构对云层区域进行抑制；对处理后的图像二值化后，利用形态学算子对目标区域填充；最后对目标区域细化，利用先验知识发现目标的头部，实验结果证明了该方法的可行性．     

一种基于反射镜的2×2机械式光开关

研制出一种基于反射镜的 2× 2机械式光开关 ,介绍了该器件的结构、原理及影响重复性的因素 ,该器件采用两个双光纤准直器对光路进行耦合 ,利用继电器带动反射镜工作 ,能够灵活地改变光路 .该器件主要用于光交叉连接和光路信号上下载中 ,实验和测量结果表明具有插损低、可靠性好的特点 ,应用前景极其广泛 .     

一种基于聚类的粗糙集连续属性的离散化算法

粗糙集理论是一种新的处理不精确、不完全与不相容知识的数学工具。粗糙集理论只能对离散属性进行处理，而不能处理连续属性。中针对这一缺陷，利用连续数值属性有序性的性质和统计方差理论，提出了一种基于聚类的连续属性离散化算法。运用典型数据将本算法与现有方法进行了比较分析，得到了满意的结果。     

An oscillatory neural network and dynamical associative memory

Ａｒｔｉｆｉｃｉａｌｎｅｕｒａｌｎｅｔｗｏｒｋｈａｓｒｅｃｅｎｔｌｙｒｅｃｅｉｖｅｄｃｏｎｓｉｄｅｒａｂｌｅａｔｅｎｔｉｏｎｆｒｏｍｖａｒｉｏｕｓｒｅｓｅａｒｃｈｆｉｅｌｄｓ．Ｍｕｃｈｅｆｏｒｔｈａｓｂｅｅｎｍａｄｅｔｏｗａｒｄｓｔｈｅｕｎｄｅｒｓｔ...     

灰色残差修正模型在中长期负荷预测中的应用

电力系统负荷预测是电力系统发电计划的重要组成部分,也是电力系统经济运行的基础。本文在应用GM（1,1）模型的基础上,建立了两种应用残差对预测数据进修正的模型。实例表明本文提出的方法较传统GM（1,1）模型有更高的精度。     

A Novel Routing Method for Social Delay-Tolerant Networks

The lack of continuous connectivity and a complete path from source to destination makes node communication quite difficult in Delay-Tolerant Networks(DTNs). Most studies focus on routing problems in idealized network environments without considering social properties. Communication devices are carried by individuals in many DTNs; therefore, DTNs are unique social networks to some extent. To design efficient routing protocols for DTNs, it is important to analyze their social properties. In this paper, a more accurate and comprehensive metric for detecting the quality of the relationships between nodes is proposed, by considering the contact time, contact frequency, and contact regularity. An overlapping hierarchical community detection method is designed based on this new metric, and a tree structure is built. Furthermore, we exploit the overlapping community structure and the tree structure to provide message-forwarding paths from the source node to the destination node.The simulation results show that our Routing method based on Overlapping hierarchical Community Detection(ROCD) achieves better delivery rate than SimBet and Bubble Rap, the classic routing protocols, without affecting the average delay.     

方差分量估计和多余观测分量计算方法探讨

本文根据矩阵迹运算规则,对消去定向角未知数前后赫尔默特方差分量估计公式作了简化,简化后公式仍精确.本文还提出一种方差分量估计的近似方法.利用该法进行方差分量估计,其估值无偏.此外,本文还导出消去定向角未知数后多余观测分量计算公式.利用上述有关公式进行方差分量估计和多余观测分量计算,既能节省计算机内存,又能提高运算速度.     

基于行为模式挖掘的网络入侵检测

基于系统模型DMIDS，提出了一种有效防范网络入侵的方法。该方法基于IP包信息挖掘出用户的频繁行为模式，能自动建立正常和异常的用户行为规则库；利用相似性匹配，能实时地检测出已知的和未知的攻击。详细介绍了用户频繁行为模式挖掘算法－－IDSPADE，实验结果表明该算法能够有效地发现多种网络入侵行为。和现有基于知识工程的方法相比，该方法具有更高的智能性和环境适应性。     

具有可变时滞的随机系统的指数稳定性

研究了具可变时滞的随机系统ｄｘ（ｔ）＝［Ｆ（ｔ,ｘ（ｔ）,ｘ（ｔ－δ１（ｔ）））＋Δｆ（ｔ,ｘ（ｔ）,ｘ（ｔ－δ２（ｔ）））］ｄｔ＋ｇ（ｔ,ｘ（ｔ）,ｘ（ｔ－δ３（Ｔ）））ｄｗ（ｔ）的ｐ阶均值指数稳定性与几乎必然指数稳定性,引入对应的随机系统（无时滞与扰动）ｄｘ（ｔ）＝ｆ（ｔ,ｘ（ｔ）,ｘ（ｔ））ｄｔ＋ｇ（ｔ,ｘ（ｔ）,ｘ（ｔ））ｄｗ（ｔ）并假设它是指数稳定的,应用Ｒａｚｕｍｉｋｈｉｎ技巧证明了当时滞δｉ（ｔ）（ｉ＝１,２,３）与扰动Δｆ充分小时,原随机时滞系统仍指数稳定．     

Fluid inclusions evidence for differential exhumation of ultrahigh pressure metamorphic rocks in the Sulu terrane

Since the discovery of coesite and diamond inclusions in eclogites from the Dabie-Sulu orogen, east-central China[1―3], this largest ultrahigh pressure (UHP) metamor- phic terrane in the world has attracted extensive scientific interests. A number of hydrous minerals such as zoisite, phengite, magnesite and talc have been found in the UHP rocks, showing that fluids have played an important role in this type of extreme metamorphic evolution[4―8]. Sev-eral techniques have been applied to th…