微粒群算法及研究   总被引：1，自引：0，他引：1  

李梅娟  王罡  刘臣奇 《鞍山师范学院学报》2006,8(2):44-47

群智能理论是一种新兴演化计算技术,它与人工生命,特别是进化策略和遗传算法有着极为特殊的联系,群智能方法是一种能够有效解决大多数全局优化问题的新方法.其潜在的并行性和分布式特点为处理大量复杂的工程应用问题提供了技术保证.本文主要阐述了微粒群算法的基本原理及其研究现状及今后的研究方向.  相似文献   

自适应滤波器算法的DSP实现   总被引：1，自引：0，他引：1  

任向民 《哈尔滨学院学报》2005,26(10):136-137

文章主要论述了自适应滤波器的原理和算法，并介绍使用DSP来实现算法，及使用DSP的开发工具。  相似文献   

Research progress in SAW filter banks     

何世堂 《浙江大学学报(A卷英文版)》2005,6(9):990-996

INTRODUCTION SAW (Surface Acoustic Wave) filter bank is a single input, single or multi-output device consisting of multi-SAW-filters, input interconnection network or switch circuits, and can be divided into two cate- gories: channelizer (multi-output) and switchable (programmable, single output). The former is mainly used in military channelized receiver for spectrum analysis; the latter has wide application in frequency synthesizer and frequency-hopping radar and com- munication syst…  相似文献   

Mitigation of light-induced damage on modern digital prints: Photographs and documents     

Andrea Venosa  Daniel Burge  Douglas Nishimura 《文物保护研究》2016,61(1):101-110

This study is part of a larger research project dedicated to digital print preservation issues – the Digital Print Preservation Portal (DP3). This work quantifies the potential of glazing materials to mitigate different types of light-induced damage – colorant fade, paper yellowing, changes in paper gloss, and loss of optical brightening agent (OBA) function – that occur to digitally printed photographs and documents when on display. Prints were subjected to xenon lighting to simulate daylight through window glass in a series of arrangements: without glazing, with plain framing glass (soda-lime) in a sealed or unsealed package, and with UV blocking glass in a sealed or unsealed package. Sealed packages served the purpose of isolating the samples from atmospheric pollutants, known to contribute to the deterioration of certain print types. In this study, the use of UV-filtering glass protected prints from colorant fade, paper yellowing, and paper gloss change to an extent. Protection conveyed by plain glass was less comprehensive and less effective than UV glass. Neither type of glazing was able to keep the OBAs functional by the end of the light exposure. It was also seen that light-induced damage to digital prints is due not only to UV radiation, but also to visible light, and that different digital prints may be more vulnerable to one or the other. Protecting sensitive prints from UV radiation and budgeting the amount of light they may be exposed to should be essential to any print display policy in order to ensure longevity.  相似文献   

Dynamics analysis of vibration process in Particle Impact Noise Detection     

ZHANG Hui ZHOU Chang-lei WANG Shu-juan ZHAI Guo-fu 《浙江大学学报(A卷英文版)》2007,8(3):444-448

Particle Impact Noise Detection (PIND) test is a reliability screening technique for hermetic device that is prescribed by MIL-PRF-39016E. Some test conditions are specified, although MIL-PRF-39016E did not specify how to obtain these condi- tions. This paper establishes the dynamics model of vibration process based on first order mass-spring system. The corresponding Simulink model is also established to simulate vibration process in optional input excitations. The response equations are derived in sinusoidal excitations and the required electromagnetic force waves are computed in order to obtain a given vibration and shock accelerations. Last, some simulation results are given.  相似文献   

轻质球形水处理滤料的研制   总被引：3，自引：0，他引：3  

代文双 《辽宁科技学院学报》2002,4(4):14-15,20

以粘土为主要原料，加入适量的化工原料，生产出较理想的水处理滤料－一种轻质陶粒。该滤料有强度大、空隙率大、比表面积大、化学稳定性好、生物附着力强、挂膜性能良好、水流流态好、反冲容易进行的特点。通过曝气生物滤池处理城市污水的试验表明，这种滤料具有很好的处理效果。  相似文献   

克拉申情感过滤假设对我国外语教学的启示   总被引：2，自引：0，他引：2  

黄洪 《湖南科技学院学报》2005,26(2):217-220

情感因素极大地影响了第二语言习得。本文从理论上介绍克拉申的第二语言习得理论的情感过滤假设，并从实践上探讨该假设对目前外语教学的有益启示，旨在提高与加强大学外语教学的效率和效果。  相似文献   

域名过滤器的研究应用     

范改芳  周向军 《安阳师范学院学报》2007,(5):57-60

DNS服务的设计初衷是为了完成域名和地址的对应转换,但是在中大型的企业内部网络结构中,为了减少垃圾流量,有时候并不需要对所有的域名都进行解析,而是希望服务器能够有选择、有限制地对客户端的域名查询做出反应。在DNS条件转发技术的基础上,本文提出了域名过滤器概念并进行了一些初步的研究工作。  相似文献   

BAF工艺用于炼油废水的深度处理     

陈梅芹  朱炜 《茂名学院学报》2007,17(1):28-30

以某石化企业炼油废水生化出水为处理对象,采用BAF 陶粒粒料过滤组合工艺深度处理废水,使之达到废水回用目的。试验结果表明:该组合工艺对COD总去除率为51％,氨氮去除率32．93％,石油类去除率74．69％,最终出水水质ρCOD <50mg/l、ρ氨氮<10mg/l、ρ石油类<3 mg/l,达到车间杂用水水质要求。  相似文献   

有源电力滤波器技术的探讨     

李家坤  李生明 《长江工程职业技术学院学报》2008,25(2):32-34

介绍有源电力滤波器的原理、分类和常用控制方法,并对有源电力滤波器控制技术的国内外研究进展进行了分析和评价。  相似文献