“十五”期间我国农产品加工技术与装备发展重点(Ⅰ)

本文介绍了国内外农产品加工技术与装备的发展趋势和存在的差距。通过对新阶段市场需求的分析 ,阐述了我国“十五”期间农产品加工技术与装备的发展重点和发展步骤 ,并提出行业发展的相关政策和措施     

Graph-based representations and techniques for image processing and image analysis

In this paper we will discuss the use of some graph-based representations and techniques for image processing and analysis. Instead of making an extensive review of the graph techniques in this field, we will explain how we are using these techniques in an active vision system for an autonomous mobile robot developed in the Institut de Robòtica i Informàtica Industrial within the project “Active Vision System with Automatic Learning Capacity for Industrial Applications (CICYT TAP98-0473)”. Specifically we will discuss the use of graph-based representations and techniques for image segmentation, image perceptual grouping and object recognition. We first present a generalisation of a graph partitioning greedy algorithm for colour image segmentation. Next we describe a novel fusion of colour-based segmentation and depth from stereo that yields a graph representing every object in the scene. Finally we describe a new representation of a set of attributed graphs (AGs), denominated function-described graphs (FDGs), a distance measure for matching AGs with FDGs and some applications for robot vision.     

Hypersonic Waverider Surface Development Using Aerodynamic Flow Around Conical Bodies

1 Introduction The future high speed aircrafts flying with hypersonic speeds are in search of configurations giving a better lift to drag ratio. With advent of scramjets, it is also required to provide an adequate inlet pressure and mass flow rate for its operation. The Waverider based forebodies have been considered as one option. They are developed from a known aerodynamic flow field and get their name due to the reason that they develop their lift force form the pressure difference between…     

水平位置测控调平装置研究设计

本文介绍了水平位置测控装置的研究和设计,该装置主要由MB90F549单片机构成的低压电机控制器,嵌入式监控器,低压直流电机、减速器以及T形丝杠组合和稳定平台台体构成。系统内部通信通过CAN总线和RS232连接,并可以通过CAN总线技术扩展成为分布式系统。该装置可以为车载武器系统提供高精度的水平状态测控,具有现实意义,并可作为产品向业内推广。     

用度量矩阵和偏差矩阵加速修改AHP中判断矩阵的多对元素交叉方法

本文通过分析判断矩阵,一致性矩阵,导出矩阵及度量矩阵的关系,提出一种用度量矩阵和导出矩阵交叉加速修改AHP中的判断矩阵.当判断矩阵的一致性较差时,基于导出矩阵和度量矩阵中偏离大的元素对判断矩阵一致性的影响较大,通过度量矩阵得出加速修正的步长.每次修改判断矩阵的一对元素即可进行判断矩阵的修正.实例分析表明,交叉修正法是可行的,且可根据问题的性质,灵活确定修正的步长.     

提高配线数据的准确率

针对衡水电力通信网中配线记录越来越多,因长期对该项数据记录混乱,削弱了对其监管力度,直接影响了通信设备的维护、施工和改造效率.文章从影响配线记录准确性因素的分析入手,通过破解原有的配线维护流程,绘制出错误配线记录原因分析关联图,找出了影响配线记录准确率的关键因素,进而有针对性地完善了管理系统功能,规范了配线数据地收集、更新方法,增加了核对记录和培训制度等,有效地提高了配线记录的准确率.     

矿用低压电动机的短路电流保护

通过对低压电动机短路电流分析和计算,说明低压电动机短路的种类和保护方法.     

盐碱地种植水稻的水利措施

根据江东灌区盐碱地种植水稻成功经验，针对影响水稻生长和产量的不利因素，提出盐碱地种植水稻的水利工程措施、灌水技术措施，使水稻获得高产。     

日本阪神地震对钢框架节点设计的影响

介绍了1995年日本阪神地震引起的钢框架梁柱节点特别是混合连接节点的破坏情况，分析指出坡口焊缝处的衬板和引弧板造成人工缝，梁翼缘坡口焊缝出现超应力等是造成节点破坏的主要原因.讨论总结了改进节点设计的途径和改进措施，如：改变节点的构造形式，去除梁翼缘焊缝衬板缺口效应，改进扇形切角构造，加强梁腹板与柱的连接等.     

基于相容风险测度的结构夏普比率

在相容风险测度的意义下,对夏普比率给出一个新的结构性解释,在包括无风险资产和纯粹风险资产的投资组合下对夏普比率进行推广,考虑了投资结构对风险的影响,及其在具有多资产组合和一般测度空间背景下的应用.实证分析研究了郑州商品交易所农产品期货投资中最优资产分配和最优投资绩效问题.