检索结果-内蒙古大学图书馆

IEEE Instrumentation and Measurement Technology Conference

作者： G.C. Giakos N. Shah S. Chowdhury S. Suryanarayanan S. Sumrain R. Guntupalli A. Medithe S. Vedantham V. Kumar R.E. Endorf Imaging Systems Sensors and NanoEngineering Laboratory Department of Electrical and Computer Engineering University of Akron Akron USA Department of Biomedical Engineering University of Akron Akron USA Division of Engineering and Applied Mathematics University of Akron Akron USA Department of Physics University of Cincinnati OH USA

来源：评论

学校读者我要写书评

暂无评论

An implementation of public key cryptosystem TTM with linear time complexity for decryption

An implementation of public key cryptosystem TTM with linear...

引用

IEEE International Symposium on Information Theory

作者： Yuh-Hua Hu Lih-Chung Wang J.-M. Chen Feipei Lai Chun-Yen Chou Department of Computer Science and Information Engineering National Taiwan University Taipei Taiwan Department of Applied Mathematics National Donghwa University Hualien Taiwan Department of Mathematics Purdue University West Lafayette IN USA Department of Electrical Engineering & Department of Computer Science and Information Engineering National Taiwan University Taipei Taiwan Department of Mathematical Education National Hualien Teachers College Hualien Taiwan

ISBN: (纸本)0780377281

T. Moh invented a cryptosystem called tame transformation method (TTM). TTM cryptosystem is claimed to be the fastest among all currently known unbroken public key cryptosystems. We have done an actual implementation with linear time complexity for decryption and made some performance tests on it to verify the claim of speed. Also, we give some discussion on our TTM implementation and some attacks on TTM.

关键词： Public key cryptography Time to market Polynomials mathematics Testing Abstract algebra Elliptic curve cryptography Zinc Computer science Postal services

来源：评论

学校读者我要写书评

暂无评论

Reduction of Large-Scale Groundwater Flow Models Via the Galerkin Projection

引用

IFAC Proceedings Volumes 2003年第16期36卷 1381-1386页

作者： P.T.M. Vermeulen A.W. Heemink C.B.M Te Stroet Department of Applied Mathematical Analysis Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technology P.O. Box 5031 2600 GA Delft the Netherlands Netherlands Institute of Applied Geoscience TNO National Geological Survey P.O. Box 80015 3508 TA Utrecht the Netherlands

In this paper we describe a reduced model structure that describes the hydraulic head h for ground water flow models as a linear combination of a set of spatial patterns P with time-varying coefficients r. We discuss a data-driven technique to extract patterns P (EOFs) that span a subspace of model results that captures most of the relevant information of the original model. We make use of the patterns to obtain a reduced dynamic model for the time-varying coeffecients via a Galerkin Projection. This technique substitutes h within the PDE for groundwater now by the reduced model structure P T r. We acquire a dynamic reduced model for dr/dt by multiplying the outcome with P T . The vector dimension of r is often small compared to the original dimension of h, and a model which operates within a lower dimension requires less computational time. The method has heen evaluated for a realistic case, whereby we achieved a maximal reduction in computational time of ≈ 80. The reduced model has a promising prospect as its efficiency increases whenever the number of grid cells increases and the parameterization of the original model grows in complexity.

关键词： Groundwater Empirical Orthogonal Functions (EOFs) Large-scale Linear Model reduction Numerical methods

来源：评论

学校读者我要写书评

暂无评论

An implementation of public key cryptosystem TTM with linear time complexity for decryption

An implementation of public key cryptosystem TTM with linear...

引用

Proceedings 2003 IEEE International Symposium on Information Theory (ISIT)

作者： Hu, Yuh-Hua Wang, Lih-Chung Chen, Jiun-Ming Lai, Feipei Chou, Chun-Yen Dept. of Comp. Sci. and Info. Eng. National Taiwan University Taipei 106 Taiwan Dept. of Applied Mathematics National Donghwa University Hualien 974 Taiwan Department of Mathematics Purdue University West Lafayette IN 47907 United States Department of Electrical Engineering Dept. of Comp. Sci. and Info. Eng. National Taiwan University Taipei 106 Taiwan Dept. of Mathematical Education National Hualien Teachers College Hualien 970 Taiwan

关键词： Public key cryptography

来源：评论

学校读者我要写书评

暂无评论

Probing charge carriers in semiconductor quantum dots by terahertz spectroscopy

Probing charge carriers in semiconductor quantum dots by ter...

引用

Quantum Electronics and Laser Science Conference (QELS)

作者： F. Wang M. Bonn J. Shan M.A. Islam I.P. Herman T.F. Heinz Departments of Physics and Electrical Engineering Columbia University New York NY USA Leiden Institute of Chemistry Leiden Netherlands Department of Phystcs Case Western Reserve University Cleveland OH USA Department of Applied Physics and Applied Mathematics Columbia University New York NY USA

The terahertz response of photo-excited charge carriers in CdSe quantum dots has been studied. Quantum dots containing a single electron-hole pair exhibit a real polarizability with a magnitude exceeding 10000 /spl Ar... 详细信息

关键词： Charge carriers Quantum dots US department of Transportation Spectroscopy Ultrafast optics Frequency Optical pumping Optical polarization Conductivity Pulse amplifiers

来源：评论

学校读者我要写书评

暂无评论

A longitudinal study of student persistence in science, technology, engineering, and mathematics (STEM) at a regional urban university

A longitudinal study of student persistence in science, tech...

引用

2003 ASEE Annual Conference and Exposition: Staying in Tune with engineering Education

作者： Della-Piana, Connie Kubo Darnell, Ann Bader, Julia Romo, Lilly Rubio, Nohemi Flores, Benjamin Knaust, Helmut Brady, Thomas Swift, Andrew Model Institutions for Excellence University of Texas El Paso Model Inst. Excellence Initiative University of Texas El Paso Statistical Consulting Laboratory University of Texas El Paso Department of Electrical Engineering UTEP NSF Model Institutions Excellence Program Entering Students Prog. Sci./Eng. UTEP Department of Mathematics College of Science University of Texas El Paso Department of Biological Science Ctr. for Environ. Rsrc. Management

In 1995 the National Science Foundation (NSF) funded six minority-serving institutions in an effort to develop models for undergraduate science, technology, engineering, and mathematics (STEM) education that would increase the persistence, graduation, and success of all undergraduate STEM students;improve the quality of undergraduate STEM programs;and increase the diversity in STEM professions and graduate programs. The University of Texas at El Paso (UTEP), one of the six funded institutions, is located in the southwest corner of Texas bordering Juarez, Mexico and New Mexico. It primarily serves the predominantly Hispanic population of the region. Developed for all entering students in the College of Science and College of engineering, the Circles of Learning for Entering Students (CircLES) program is a comprehensive institutional effort starting with a weeklong STEM summer orientation. CircLES also provides students with discipline-specific student advising and requires students to participate in one to two semesters of science or engineering-oriented learning communities, based on their pre-college preparation in mathematics and English. This paper describes the design and findings of a five-year longitudinal study of student persistence in STEM since implementation of the program. Findings from the study indicate that students who participate in the program have higher retention rates in STEM, as well as at the University, and increased persistence toward graduation when compared to 1997 baseline rates. Similar results are observed when findings are disaggregated by gender, ethnicity, and level of entering mathematics course.

关键词： engineering education

来源：评论

学校读者我要写书评

暂无评论

A novel multipath dispersion reduction technique based on controlled-polarization optical wireless link setup

A novel multipath dispersion reduction technique based on co...

引用

IEEE Instrumentation and Measurement Technology Conference

作者： G.C. Giakos N. Patnekar S. Sumrain L. Fraiwan V. Kumar G.B. Mertzios Department of Electrical and Computer Engineering Optical Electronics. Photonics Optical Communication Laboratory University of Akron Akron OH USA Department of Biomedical Engineering University of Akron Akron OH USA Division of Engineering and Applied Mathematics University of Akron Akron OH USA School of Applied Mathematical and Physical Sciences National and Technical University of Athens Athens Greece

The detection characteristics of an indoor-optical communication system, which utilizes infrared radiation as carrier has been explored and enhanced for telemedicine, and wireless local area network applications. The novelty of the presented technique consists in the fact that multipath dispersion can be reduced under controlled polarization link setup. The design of such a network is based on the specifications set by the IEEE 802.11 standard. Significant noise reduction has been achieved by utilizing wavelet transform processing algorithms.

关键词： Optical control Communication system control Infrared detectors Radiation detectors Optical fiber communication Telemedicine Wireless LAN Optical polarization Noise reduction Wavelet transforms

来源：评论

学校读者我要写书评

暂无评论

Linear least-squares based methods for neural networks learning

Linear least-squares based methods for neural networks learn...

引用

Joint International Conferences on Artificial Neural Networks and Neural Information Processing, ICANN/ICONIP 2003

作者： Fontenla-Romero, Oscar Erdogmus, Deniz Principe, J.C. Alonso-Betanzos, Amparo Castillo, Enrique Laboratory for Research and Development in Artificial Intelligence Department of Computer Science University of A Coruña Campus de Elviña s/n Coruña15071 A Spain Computational NeuroEngineering Laboratory Electrical and Computer Engineering Department University of Florida GainesvilleFL32611 United States Department of Applied Mathematics and Computational Sciences University of Cantabria University of Castilla-La Mancha Avda de Los Castros s/n Santander39005 Spain

ISBN: (纸本)3540404082

This paper presents two algorithms to aid the supervised learning of feedforward neural networks. Specifically, an initialization and a learning algorithm are presented. The proposed methods are based on the independent optimization of a subnetwork using linear least squares. An advantage of these methods is that the dimensionality of the effective search space for the non-linear algorithm is reduced, and therefore it decreases the number of training epochs which are required to find a good solution. The performance of the proposed methods is illustrated by simulated examples. © Springer-Verlag Berlin Heidelberg 2003.

关键词： Feedforward neural networks

来源：评论

学校读者我要写书评

暂无评论

Dynamical origin for the occurrence of asynchronous hyperchaos and chaos via blowout bifurcations

引用

Physical Review E 2003年第6期68卷 066203-066203页

作者： Sang-Yoon Kim Woochang Lim Edward Ott Brian Hunt Institute for Research in Electronics and Applied Physics University of Maryland College Park Maryland 20742 USA Department of Physics Kangwon National University Chunchon Kangwon-Do 200-701 Korea Department of Physics and Department of Electrical and Computing Engineering University of Maryland College Park Maryland 20742 USA Institute for Physical Science and Technology and Department of Mathematics University of Maryland College Park Maryland 20742 USA

We investigate the dynamical origin for the occurrence of asynchronous hyperchaos and chaos via blowout bifurcations in coupled chaotic systems. An asynchronous hyperchaotic or chaotic attractor with a positive or negative second Lyapunov exponent appears through a blowout bifurcation. It is found that the sign of the second Lyapunov exponent of the newly born asynchronous attractor, exhibiting on-off intermittency, is determined through competition between its laminar and bursting components. When the “strength” (i.e., a weighted second Lyapunov exponent) of the bursting component is larger (smaller) than that of the laminar component, an asynchronous hyperchaotic (chaotic) attractor appears.

关键词： Chaos theory

来源：评论

学校读者我要写书评

暂无评论

Geohydrological Application of a Nonlinear Physically Based Time Series Model

引用

IFAC Proceedings Volumes 2003年第16期36卷 1933-1938页

作者： W.L. Berendrecht A.W. Heemink F.C. van Geer J.C. Gehrels Department of Applied Mathematical Analysis Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technology P. O. Box 5031 2600 GA Delft the Netherlands Netherlands Institute of Applied Geoscience TNO National Geological Survey P.O. Box 80015 3508 TA Utrecht the Netherlands Department of Watermanagement Faculty of Civil Engineering and Geosciences Delft University of Technology P.O. Box 5048 2600 GA Delft the Netherlands

This paper presents a physically based time series model that relates groundwater level fluctuations to precipitation and evapotranspiration. The model is based on the nonlinear relation between the degree of water saturation of the subsoil and the groundwater recharge. The model is written in state-space form, while the extended Kalman filter is used to estimate the state equation. An example application shows that the model performs very well and that the addition of physical knowledge is a valuable extension to standard linear transfer function-noise models.

关键词： Extended Kalman filters Maximum likelihood estimators Nonlinear systems Physical models State-space models Time series analysis Transfer functions

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：