Automatic Fingerprint Classification by GA-Based Neural Network     

HUANG Xi yue  MA Xiao xiao  SHEN Zhi xi  WANG Peng  ZHOU Xin 《保鲜与加工》2001,(1):74-77

Fingerprint classification can provide an important indexing mechanism in a fingerprint database. An accurate and consistent classification can greatly reduce fingerprint matching time for large database. In the paper, by combining genetic algorithm and neural network is presented a fingerprint classification algorithm which is able to achieve an accurate classification. By inputting the global feature represented by directional image to three layer neural network trained by genetic algorithm, the fingerprints were classified into six categories: whorl, right loop, left loop, arch, double loop and undiscerning type successfully.  相似文献   

Two-dimensional Optimum Cutting Stock Method Based on Internet and Its Implementing Technique     

YAN Chun ping  LIU Fei  Liu Xi gang 《保鲜与加工》2001,(5):1-4

Two dimensional Optimum Cutting Stock is a NP complicated problem. Each of optimum software gets the cutting results by using proximate and heuristic methods. But different optimum methods and their optimum software may not realize perfect effect according to certain data framework. Furthermore, enterprises can not buy lots of optimum software to choose the most optimized plan. Because of such problems, this paper provides a two dimensional optimum cutting stock method based on Internet and offers the real implementing technique of such method. The experiments, show that this method promotes the general optimum effect of two dimensional optimum cutting stock greatly.  相似文献   

Internet Telerobotics and Its Applications     

HUANG Xi yue  MA Li bo  HE Chuan jiang  CHEN Dong yi 《保鲜与加工》2002,(9):50-54

According to a new trend of telerobot control, some key techniues are researched to solve the Internet telerobotics , such as distributed intelligent computation on the Internet, human-computer interface,and Internet-robot interface etc.The current development status of the Internet telerobotics is reviewed. Based on the new directions of the network software development, the authors discuss that the middleware technique CORBA plays an important role in solving the problems of the Internet telerobotics,and it is an effective way to use Java language to control the telerobot and improve its system performance. The application perspective of the Internet telerobotics is investigated.It is indicated that the development trend of the telerobot control is a human-centred collaboration mechanism of mutual reinforce and coordination in human-machine intelligent.  相似文献   

基于腕力传感器的机器人操作臂末端位置误差补偿   总被引：2，自引：0，他引：2  

干方建  刘正士 《农业机械学报》2001,32(6):103-105

针对机器人操作臂夹持工具与环境作用时基于传感器坐标系内的微分运动分析 ,推导出基于工具坐标系的定位误差及基于基坐标系的定位误差补偿 ,并以 PU MA5 60型机器人为例计算了定位误差及其误差补偿  相似文献   

谈秸秆气化的应用与发展动态     

张赛仕  王曦 《当代农机》2007,(2):54-55

指出秸秆气化是农村废弃资源综合利用领域中的一项重要技术,介绍了秸秆气化在国内发展动态和气化模式,提出了促进秸秆气化工作顺利开展的措施。  相似文献   

钛合金表面火焰喷焊镍基耐磨涂层的组织和性能   总被引：8，自引：0，他引：8  

许晓静  王宏宇  陈康敏  刘曦  徐文维 《农业机械学报》2006,37(5):153-157

采用火焰喷焊技术在T i 6A l 4V合金基体上制备了镍基耐磨涂层,研究了其显微组织、合金元素的扩散、显微硬度和干摩擦磨损性能。结果表明,喷焊涂层具有韧基体加硬质相的耐磨组织;涂层横切面的组织、显微硬度和合金元素的扩散沿层深方向呈现连续性和渐变性,基体和涂层表现为冶金结合;喷焊表层的显微硬度为933.2 HV,是基体钛合金的3倍以上;涂层在不同条件下的磨损量都较小,耐磨性有较大的提高,转速和温度对其耐磨性能影响较大。  相似文献   

对奢侈品消费的心理分析与探讨   总被引：2，自引：0，他引：2  

甘俊  肖子拾 《湖南农机》2007,(3):76-78

快速发展的中国经济造就了一批新富阶层,而他们又引导了国内最近2年轰轰烈烈的奢侈消费风潮,形成中国庞大的奢侈品消费市场。在这个以勤俭节约为美德,视奢侈为浪费的国度里,奢侈品消费行为有何特征,本文通过对比分析中外奢侈品消费的差别,探讨在中国如何引导理性的奢侈品消费。  相似文献   

三种不同变量施肥执行机构的比较研究   总被引：2，自引：1，他引：2  

王熙  王新忠 《农机化研究》2006,(1):122-124

目前,国内外有3种变量施肥执行机构。为此,通过对3种国内外变量施肥执行机构的设计方案进行比较研究,分析出各自的特点,选择出适合黑龙江垦区国产大豆精密播种机的变量施肥执行机构,为设计研制适合国产大豆精密播种机的变量施肥执行机构创造条件。  相似文献   

冬小麦冬灌、秸秆覆盖、后期喷生长剂的节水增产效果的研究     

朱遐龄  甘吉生  王雁 《灌溉排水学报》1994,(1)

试验证明，适时冬灌比早春灌，具有良好的防旱防冻、促根壮蘖增穗作用；小麦越冬期秸秆覆盖能保墒和提高土壤水分的调节能力，为当季小麦生长和套播玉米创造适宜的土壤水分条件；于小麦孕穗和灌浆期喷翠竹生长剂，其增粒增重作用显著。采取冬灌、越冬秸秆覆盖和孕穗、灌浆期喷生长剂等配套措施，可实现保墒与节水相结合，壮苗促蘖增穗与增粒增重的统一，节水增产效果显著。  相似文献   

基于DEM模型的流域参数识别方法研究     

张成才  马双梅  孙喜梅 《灌溉排水学报》2002,21(1):33-35,40

探讨了利用数学高程模型识别流域分水线、确定坡面水流方向以及计算流域参数的方法。通过实验流域的数据验证 ,表明该法能正确计算流域的有关参数 ,自动勾绘流域分水线 ,确定坡面水流方向。从而为分布式水文物理模型的研制提供坚实的基础  相似文献