检索结果-南通市图书馆

维普期刊数据库博看期刊

在线全文

学校读者我要写书评

暂无评论

异质虹膜识别研究综述

计算机科学 2024年第6期51卷 186-197页

作者：孔佳琳张琪王财勇中国人民公安大学信息网络安全学院北京100038 北京建筑大学电气与信息工程学院北京100044

虹膜图像采集环境和设备的不同导致虹膜注册和识别样本差异较大,给传统的虹膜识别技术带来了挑战。异质虹膜识别问题已成为学术界和工业界关注的焦点。文中从不同层级、样本差异性以及单源和多源3个角度对现有的异质虹膜识别方法进行了... 详细信息

虹膜图像采集环境和设备的不同导致虹膜注册和识别样本差异较大,给传统的虹膜识别技术带来了挑战。异质虹膜识别问题已成为学术界和工业界关注的焦点。文中从不同层级、样本差异性以及单源和多源3个角度对现有的异质虹膜识别方法进行了分类和综述,总结了目前异质虹膜识别的最新进展。按照跨质量、跨设备和跨光谱的分类对现有的异质虹膜数据集进行综述,并总结概述虹膜识别评价指标,以便研究人员更好地评估和验证算法的性能。最后,从环境鲁棒性、数据异质性建模和多模态融合3个方向,对未来异质虹膜识别研究的发展方向进行了展望。

关键词：虹膜识别异质图像生物特征深度学习

维普期刊数据库

Performance S tudy for Java Virtual Machine In Embedded Systems

在线全文

学校读者我要写书评

暂无评论

Performance S tudy for Java Virtual Machine In Embedded Syst...

2010 International Conference on Bio-inspired Systems and Signal Processing(ICBSSP 2010)

作者： Liu Wenjun school of information engineering Nanchang Institute of Technology(NIT) Nanchang 330099 China

Real time specification for Java（RTSJ） is intended for Real-time embedded *** this study,we present the architecture of a typical JVM,from the first generation,Interpreter architecture,to newest architecture,Just in... 详细信息

关键词： Real time Virtual Machine Java RTSJ

动平台分布式雷达系统动目标低比特数据检测算法

在线全文

cnki会议

学校读者我要写书评

暂无评论

雷达学报（中英文） 2024年第3期13卷 584-600页

作者：杨诗兴张国鑫梁雲飞易伟孔令讲电子科技大学信息与通信工程学院成都611731

动平台分布式雷达系统可有效提升系统的生存能力和探测性能,但运动平台之间通常采用无线传输方式,难以配备大通信带宽以传输完整的信号数据,给雷达系统的高性能检测带来极大挑战。由于低比特量化技术可显著降低分布式系统的通信传输代... 详细信息

动平台分布式雷达系统可有效提升系统的生存能力和探测性能,但运动平台之间通常采用无线传输方式,难以配备大通信带宽以传输完整的信号数据,给雷达系统的高性能检测带来极大挑战。由于低比特量化技术可显著降低分布式系统的通信传输代价和计算资源消耗,该文针对低信噪比弱信号环境下提出了动平台分布式雷达系统的低比特量化运动目标检测算法。首先,根据系统资源将各节点的多脉冲观测数据选择对应位数的低比特量化器进行量化,推导了关于量化器和多个目标状态的似然函数。其次,证明了低比特量化数据对应似然函数关于未知目标反射系数的凸性,并基于该特性设计了多普勒频移和反射系数的联合估计器。然后,针对探测区域中存在的多个状态未知目标设计了多目标检测器,推导了其恒虚警率门限。最后,通过推导系统的渐近性能设计了最优低比特量化器,在保证系统鲁棒性的同时有效提升了系统的检测性能。仿真实验分析了所提算法的检测与估计性能,结果证明了所提算法在低信噪比弱信号环境下的有效性,同时表明低比特量化数据可在仅占用低于20%通信带宽的基础上实现接近高精度(16比特量化)数据对应的检测和估计性能,且2比特量化策略可作为检测性能和雷达系统资源消耗的折中选择。

关键词：分布式雷达系统运动平台目标检测低比特量化最优量化器

维普期刊数据库

Based on BP Network Terminal Quality Prediction for BOF Steelmaking Process

在线全文

学校读者我要写书评

暂无评论

Based on BP Network Terminal Quality Prediction for BOF Stee...

2010 Chinese Control and Decision Conference

作者： Guicheng Wang~(1,2),Xiangping kong~1,Zhansheng Zhang~1,Wendan Zhao~1,Shuzhi Gao~1,Xinhe Xu~2 1.College of information engineering,Shenyang Institute of Chemical Technology,Shenyang,110142 2.school of information science and engineering,Northeastern University,Shenyang,110004

＜正＞The aspect of impact on the quality of steel is considered,according to the actual production process data in a refinery,BP neural network is applied to establish the steel quality forecasting model,which would improve steel making rate as a *** on existing Manage information System of steelmaking factory,the factors which impact to hit ratio of steel’s kinds are investigated in details.A quality control model for the appropriate steelmaking process is studied,and the black box model of BOF steelmaking terminal prediction and process optimization is *** results show that the steel pre-evaluation system is designed based on BP neural network to benefit for steel quality evaluation.

关键词： BOF Steelmaking Terminal Prediction BP Network Model Quality Evaluation

Research and Implementation of Medical Images Management System Based on DICOM Standard

在线全文

cnki会议

学校读者我要写书评

暂无评论

Research and Implementation of Medical Images Management Sys...

2010 3rd International Conference on Future BioMedical information engineering (FBIE 2010)

作者： Xiaoqi Lu Ming Zhang Lidong Yang Yongjie Zhao and Jing Liu school of information engineering Inner Mongolia University of science and Technology Baotou Inner Mongolia China

The demand for the management and transmission of medical images is growing *** this paper we discussed how to transmit and query the medical images within LAN,and presented a novel medical images management system based on the DICOM *** used a new semantic image retrieval method,which exploits the high level semantic *** system firstly parsed DICOM files and stored both the DICOM image files and the corresponding patient medical records information into the database *** it completely supported the workflow of the hospital with the digital *** experimental results met the demands of current picture archiving and communication system for mass data storage,and clearly showed the convenience and the value of the presented methods.

关键词： DICOM Medical Images Management DCMTK

Traffic Flow Distribution in Road Based on FEM

在线全文

cnki会议

学校读者我要写书评

暂无评论

Traffic Flow Distribution in Road Based on FEM

2010 International Conference on Computational Intelligence and Vehicular System (CIVS2010)

作者： Jian-ming CUI school of information engineering Chang’an University Xi’an 710064 Shaanxi Province China Ya LI school of Computer science and Educational Software Guangzhou University Guangzhou 510006 Guangdong Province China

In analysis of normal traffic flow,it usually uses the static or dynamic model to numerical analyze based on fluid ***,in such handling process,the problem of massive modeling and data handling exist,and the accuracy is not *** Element Method（FEM） is a production which is developed from the combination of a modern mathematics,mathematics and computer technology,and it has been widely applied in various domain such as *** on existing theory of traffic flow,ITS and the development of FEM,a simulation theory of the FEM that solves the problems existing in traffic flow is put *** on this theory,using the existing Finite Element Analysis（FEA） software,the traffic flow is simulated analyzed with fluid mechanics and the *** data processing problem of manually modeling and Numerical analysis is solved,the authenticity of simulation is enhanced.

关键词： Traffic flow,Distribution in Road FEM

SIGNAL ESTIMATION WITH BINARY-VALUED SENSORS

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Systems science & Complexity 2010年第3期23卷 622-639页

作者： Leyi WANG Gang George YIN Chanying LI Weixing ZHENG Department of Electrical and Computer engineering Wayne State University Detroit Michigan 48202 USA Department of Mathematics Wayne State University Detroit Michigan 48202 USA Department of Mechanical engineering The University of Hong Kong Pokfulam Road Hong Kong China school of Computing and Mathematics University of Western Sydney Australia

This paper introduces several algorithms for signal estimation using binary-valued *** main idea is derived from the empirical measure approach for quantized identification,which has been shown to be convergent and asymptotically efficient when the unknown parametersare *** estimation under binary-valued observations must take into consideration oftime varying *** empirical measure based algorithms are modified with exponentialweighting and threshold adaptation to accommodate time-varying natures of the *** anyinformation on signal generators,the authors establish estimation algorithms,interaction between noisereduction by averaging and signal tracking,convergence rates,and asymptotic efficiency.A thresholdadaptation algorithm is *** convergence and convergence rates are analyzed by using theODE method for stochastic approximation problems.

关键词： Identification signal estimation.

维普期刊数据库

A New Multiple Attribute Decision Making Method Based on Preference and Projection Pursuit Clustering Model

在线全文

学校读者我要写书评

暂无评论

A New Multiple Attribute Decision Making Method Based on Pre...

第三十届中国控制会议

作者： kong Xiangyong,LI Ruoping,GAO Liqun,FENG Da school of information science and engineering,Northeastern University,Shenyang 110004,P.R.China State Key Laboratory of Integrated Automation for Process Industries(Northeastern University)

＜正＞A new combination assigning weight approach based on decision maker’s preference and projection pursuit clustering model is proposed to overcome the shortages of subjective and objective assigning weight *** multidimensional data are easily transformed into low dimensional space and the structural feature of multidimensional data can be revealed through applying projection pursuit clustering model in multiple attribute decision making *** optimum projection and the value of projection function can be obtained by the adaptive clustering differential evolution algorithm raised in this *** simulation results verify the validity and efficiency of this approach.

关键词： Multiple attribute decision making MADM Combination weight Projection pursuit clustering model Adaptive clustering differential evolution algorithm

Organization Oriented Adaptive Web Services Compositions Framework

在线全文

cnki会议

学校读者我要写书评

暂无评论

Organization Oriented Adaptive Web Services Compositions Fra...

2009 ISECS International Colloquium on Computing, Communication, Control, and Management

作者： JianHui Zhou, Bin Li, Jun Wu school of information engineering Yangzhou University Yangzhou, China

Computing environments are becoming more open, distributed and pervasive. The web services compositions we build for these dynamic environments will need to become more adaptable and adaptive to unexpected events. This paper proposes a new web services compositions model-Organization Oriented Adaptive Web Services Compositions Framework (OOAWSCF) allowing dynamically adaptively evolve to keep up with the changing requirements or environments .It realize a reliable and flexible web services compositions framework through multi-agent organization.

关键词： web services compositions multi-agent organization multi-agent coordination semantic space