基于FPGA的高速图像预处理系统设计

介绍了一种用单片FPGA实现的实时、多任务、高速图像处理系统。该系统承担着提高信噪比、压缩数据量、Stokes参数观测和仪器及观测模式控制等任务。针对一个星载系统,采用了核心逻辑片内冗余、设计了相应的冗余管理线路等可靠性设计技术,采用了放置片内测试和校验模块等可测性设计技术,使系统工作时钟达40 MHz,图像处理速率达100 Mbps。     

洗衣文化

洗衣是日常生活中人们都要从事的一项家务劳动 ,主要操作者是女性。自古手洗衣服都要花费女人们较多的时间和精力。无论西方还是中国 ,传统的洗衣方式基本相同。自从洗衣机进入大部分家庭后 ,传统的手洗被机洗取代 ,妇女们有更多的时间从事自己喜欢的工作。     

单芯片智能化仪表抗干扰的新措施

介绍了ＸＪＰ－０２Ｂ数字转速显示仪所采用的新式看门狗电路，分析了常用的看门狗电路和新的看门狗电路在抗干扰方面的优缺点．应用表明，新的看门狗电路具有很强的抗干扰能力．     

Efficient estimation and model selection in large graphical models

We develop a computationally efficient method to determine the interaction structure in a multidimensional binary sample. We use an interaction model based on orthogonal functions, and give a result on independence properties in this model. Using this result we develop an efficient approximation algorithm for estimating the parameters in a given undirected model. To find the best model, we use a heuristic search algorithm in which the structure is determined incrementally. We also give an algorithm for reconstructing the causal directions, if such exist. We demonstrate that together these algorithms are capable of discovering almost all of the true structure for a problem with 121 variables, including many of the directions.     

刘邦施行过楚爵制己有实证

刘邦施行过楚爵制己有实证朱绍侯二十级军功爵制是秦汉政权共行的爵位制度。《汉书》卷十九《百官公卿表》有明确的记载：“爵一级曰公士、二上造、三簪、四不更、五大夫、六官大夫、七公大夫、八公乘、九五大夫、十左庶长、十一右庶长、十二左更、十三中更、十四右更、十...     

塑料注射机节能问题的研究与探讨

本文针对 XS—ZY—125型塑料注射成型机,分析了现行通用的双联泵供油液压系统耗能大的原因。介绍了压力流量补偿负荷传感液压系统在注射机上应用的基本原理。通过应用上述两种液压系统分别驱动同一台注射机的生产运行对比试验和能耗测试分析,证明压力流量补偿负荷传感液压系统具有十分显著的节能效果。通过经济效益估算分析,指出进一步开发压力流量补偿负荷传感液压系统在注射机上的应用,不仅具有十分显著的经济效益,而且具有很大的社会效益。     

基于SVM的Web日志挖掘及潜在客户发现

潜在的客户资源是商家未来的利润来源,发现了潜在的客户就可以制定相应的商业决策,并进行有针对性的客户关系管理。使用SVM方法对Web日志文件进行挖掘,以发现站点访问者中潜在客户的共同行为模式,并将其分为不同级别的目标客户群。同时,通过试验4种不同比例的训练样本,研究了非对称数据对分类结果的影响,以期获得较优的模型。     

印刷烫金机走纸控制器的软硬件设计

介绍了印刷烫金机走纸控制器软硬件的设计方案,该控制器选用低栅压导通的功率场效应管作为步进电机驱动,控制CPU采用AVR单片机.控制器具有走纸长度设置、电机启停低速而运行高速、走纸完毕声光提示、设置参数掉电保护等功能.     

The German Administrative Record Census – An object identification problem

Summary: The next German census will be an Administrative Record Census. Data from several administrative registers about persons will be merged. Object identification has to be applied, since no unique identification number exists in the registers. We present a two–step procedure. We briefly discuss questions like correctness and completeness of the Administrative Record Census. Then we focus on the object identification problem, that can be perceived as a special classification problem. Pairs of records are to be classified as matched or not matched. To achieve computational efficiency a preselection technique of pairs is applied. Our approach is illustrated with a database containing a large set of consumer addresses.*This work was partially supported by the Berlin–Brandenburg Graduate School in Distributed Information Systems (DFG grant no. GRK 316). The authors thank Michael Fürnrohr for previewing the paper. We would like to thank also for the helpful comments of an anonymous reviewer.