Radar Imaging Based on Iterative Algorithms

It has long been realized that the problem of radar imaging is a special case of image reconstruction in which the data are incomplete and noisy. In other fields, iterative reconstruction algorithms have been used successfully to improve the image quality. This paper studies the application of iterative algorithms in radar imaging. A discrete model is first derived, and the iterative algorithms are then adapted to radar imaging. Although such algorithms are usually time consuming, this paper shows that, if the algorithms are appropriately simplified, it is possible to realize them even in real time. The efficiency of iterative algorithms is shown through computer simulations.     

纳米SiO2作为蓄电池添加剂的研究

研究了纳米SiO2添加到铅酸蓄电池的极板和电解液中，对电池的起动性能和循环性能的影响。     

视频汇流环的设计与研究

作者在文献[1]中从理论上阐明了视频汇流环的小型化设计。本文着重介绍视频汇流环的电器设计和它的测试方法。     

中国动漫产业的崛起

文章从中国动漫产业现状入手,举例说明中国动漫业目前所存在的瓶颈,并由此提出了振兴中国动漫业的建议.且阐述了动漫产业任重而道远的原因.     

浅谈直观教学在弱智学生语文教学中的功能

文章从直观教学的能趣化、活化、深化和强化几个方面对使用直观教学促进弱智学生语文教学的功能进行了探讨.     

CFG桩施工引起桩周土体开裂的原因探讨

由于郑东新区特殊的工程地质条件，长螺旋CFG（Cement Flyash Gravel）桩施工常常引起桩周土体开裂和周围建筑物开裂等施工事故。本文通过郑州某工地现场试验分析，否定了空桩效应引起桩周土体开裂的猜想，并分析了郑东新区由于CFG桩施工引起桩周土体开裂的原因。     

蒸汽机车水垢形成机理及解决方法

蒸汽机车锅炉水垢对机车的安全运行及工作效能有很大的影响,对蒸汽机车水垢的处理极其重要。蒸汽机车水垢是经过复杂的物理、化学变化而形成的。由于水垢的形成,造成锅炉的传热效率低,大量浪费燃料;降低锅炉出力危及锅炉安全运行;缩短使用寿命增大检修量,浪费工时、原料。为了缓解机车水垢的形成,可以采取尽量降低软化水硬度、确保洗修质量、合理安排排污时机和次数,提高排污效果等措施,并在实际运用中取得了一定的效果。     

大学“通才教育”背景下《无机化学》教学改革探讨

无机化学是化学及相关专业的一门重要基础课。在通才教育背景下，如何深化无机化学教学改革？本文在教学理念、教学内容、教学方法和评价体系等四个方面进行了初步的探讨。     

Weight measurement using image-based pose analysis

Image-based gait analysis as a means of biometric identification has attracted much research attention. Most of the existing methods focus on human identification, posture analysis and movement tracking. There have been few investigations on measuring the carried load based on the carrier＇s gait characteristics by automatic image processing. Nevertheless, this measurement is very useful in a number of applications, such as the study of the carried load on the postural development of children and adolescence. In this paper, we investigate how to automatically estimate the carried weight from a sequence of images. We present a method to extract human gait silhouette based on an observation that humans tend to minimize the energy during motion. We compute several angles of body leaning and determine the relationship of the carried weight, the leaning angles and the centroid location according to a human kinetic study. Our weight determination method has been verified successfully by experiments.     

数字式温度传感器在冰箱检测系统中的应用

本文介绍了数字式温度传感器的工作原理、性能特征以及如何在冰箱检测系统中引入单总线技术,使用数字式温度传感器更好的实现温度的采集。