面向对象的人工神经网络模拟

面向对象程序设计已成为９０年代程序设计的主流，它采用全新的方法来求解问题，本文在概述面向对象程序设计的基础上，着重介绍了用面向对象程序设计语言Ｃ（＋＋）来表示神经网络结构和学习算法，介绍了实现ＢＰ和ＢＡＭ网络的软件模拟技术，并给出了一个应用实例。     

传感器网络推拉混合模式代码传输方法

代码传输是实现无线传感器网络应用重构的关键技术.首先研究传感器网络环境自适应应用重构(EAAR)模型的两种代码传输模式-拉模式和推模式,并结合两种模式的特点提出一种适用于分簇传感器网络的能量有效代码传输模式-基于簇的混合代码传输(Cluster-based Hybrid Code Transmission, CHCT).在该模式下,簇头节点采用拉方式从基站获取代码,簇内节点采用推方式进行代码传输.仿真实验验证了方法的有效性并讨论了影响CHCT性能的主要参数.     

基于RTDX技术的多用户检测实验平台设计

介绍了一种基于RTDX技术的多用户检测试验平台设计方法,同时阐述了如何利用RTDX技术实现多用户检测试验平台设计的具体方法。     

层析成像的模糊-神经网络重建方法

考虑投影数据不足时，射线层析成像的离散重建算法难以取得较好效果的情况，利用模糊理论建立了表示物体衰减系数的连续函数，用神经网络学习算法确定该连续函数中的待定参数．提出了一种适于投影数据或投影方向不够时的CT图像重建算法．计算机仿真结果显示了该方法在投影数据严重缺少时的良好效果。     

Efficient and power-awareness query over sensor networks

Sensor networks consisted of low-cost, low-power, multifunctional miniature sensor devices have played an important role in our daily life. Light and humidity monitoring, seismic and animal activity detection, environment and habitat monitoring are the most common applications. However, due to the limited power supply, ordinary query methods and algorithms can not be applied on sensor networks. Queries over sensor networks should be power-aware to guarantee the maximum power savings. The minimal power consumption by avoiding the expensive communication of the redundant sensor nodes is concentrated on. A lot of work have been done to reduce the participated nodes, but none of them have considered the overlapping minimum bounded rectangle (MBR) of sensors which make them impossible to reach the optimization solution. The proposed OMSI-tree and OMR algorithm can efficiently solve this problem by executing a given query only on the sensors involved. Experiments show that there is an obvious improvement compared with TinyDB and other spatial index, adopting the proposed schema and algorithm.     

中枢型尼古丁受体与阿尔茨海默病

阿尔茨海默病是一种以渐进性的认知功能障碍为主要特征的神经退行性疾病，该病最终会导致死亡，是痴呆病中最常见的一种类型。近年来研究发现中枢尼古丁受体在AD的发病中起着非常重要的作用，本文对此进行综述。     

The concentration quenching characteristics of ~5D_3-~7F_J and ~5D_4-~7F_J (J=0―6) transitions of Tb~(3 ) in YBO_3:Tb~(3 ) phosphor

The photoluminescence quenching behaviors of 5D3-7FJ and 5D4-7FJ (J = 0―6) transitions of Tb3 in YBO3:Tb under 130―290 nm excitation were systematically investigated. The results revealed that the quenching concentrations of both 5D3-7FJ and 5D4-7FJ transitions of Tb3 in YBO3:Tb were mainly de-pendent on excitation wavelength. Particularly,the quenching concentrations of 5D4-7FJ transitions of Tb3 under 130―290 nm excitation were correlated with excitation bands of YBO3:Tb. The quenching concentrations of 5D3-7FJ transitions remained at low concentration (2%) under 186―290 nm excitation and then increased gradually with energy of incoming excitation photon when excited at 130―186 nm. This dependence should be involved in their excitation mechanisms and quenching pathway in particular excitation region.     

Conflict Pattern Analysis: Preparing the Ground for Participation in Policy Implementation

The participation of non-state actors in implementation processes is often understood as a means to increase compliance efficiency. But the implementation of spatial policies frequently focuses on pre-established goals, processes and instruments and thus renders difficult open discourse and shared decision-making. This paper introduces conflict pattern analysis (CPA) as a tool that supports the analysis of the actual actor constellation in order to define efficient approaches that avoid common problems of participatory processes. CPA is a semi-formalised method that helps to identify key-actors, their relations and interaction amongst each other as well as their core beliefs, interests and resources. It aggregates this information to interaction patterns that can be compared, classified and linked to different participatory methods on a theoretically informed basis. Particularly on the local and regional level, this could be the first step for successful (participatory) implementation strategies.     

用硫化物沉淀法脱除甲基紫染料中的铜

在pH为2～3的硫酸介质中,缓慢加入稀硫化钠溶液,可以将甲基紫染料中的铜含量降至1000ug/g以下.本方法工艺简单,设备投资低,试剂用量少,经济效益高,是理想的甲基紫染料生产工艺改进方法.讨论了工业生产中的废料利用及治理环境污染等问题.对该方法已成功进行了工业放大实验.     

一种求解刚体3D运动参数的鲁棒算法

提出一种基于鲁棒统计学中位数的３Ｄ运动参数估计方法，能够有效地克服由于出格点造成的粗差，并且不需任何参数初始值，整个算法计算简便，计算机模拟显示，其估计精度是令人满意的。