检索结果-内蒙古大学图书馆

37th European Microwave Conference, EUMC

作者： Weng, Min-Hang Wu, Hung-Wei Shu, Kevin Chen, Jau-Rung Yang, Ru-Yuan Su, Yan-Kuin National Nano Device Laboratories Tainan Science-based Industrial Park Hsin-shi No. 27 Nanke 3rd. Road Tainan 744 Taiwan Institute of Microelectronics Department of Electrical Engineering National Cheng Kung University No. 1 Ta-Hsueh Road Tainan 701 Taiwan Graduate Institute of Communication Engineering National University of Tainan 33 Su-Lin St. Tainan 700 Taiwan Department of Computer Application Engineering Far East University No.49 Chung Hua Rd. Hsin-Shih Tainan 744 Taiwan

ISBN: (纸本)9782874870033

A new design of triple-band bandpass filter (BPF) using multilayer-based substrates is proposed in this paper. The BPF is designed to have three passbands at 2.3-2.7 GHz, 3.3-3.9 GHz and 5.15-5.85 GHz for Wireless Metropolitan Area Network Air Interface (WiMAX). The design concept is to arrange three pair of coupled resonators in the multilayer structure to generate three passbands. By using the multilayer-based substrate, the triple-band BPF can simultaneously achieve size reduction and produce the cross-coupling effect. Experimental results are in good agreement with the full-wave simulation results. © 2007 EuMA.

关键词： Bandpass filters

来源：评论

学校读者我要写书评

暂无评论

Design of a compact micro strip triplexer for multiband applications

Design of a compact micro strip triplexer for multiband appl...

引用

37th European Microwave Conference, EUMC

作者： Wu, Hung-Wei Shu, Kevin Yang, Ru-Yuan Weng, Min-Hang Chen, Jau-Rung Su, Yan-Kuin Department of Electrical Engineering Institute of Microelectronics National Cheng Kung University No 1 Ta-Hsueh Road Tainan 701 Taiwan Graduate Institute of Communication Engineering National University of Tainan 33 Su-Lin St. Tainan 700 Taiwan Department of Computer Application Engineering Far East University No.49 Chung Hua Rd. Hsin-Shih Tainan 744 Taiwan National Nano Device Laboratories Tainan Science-based Industrial Park Hsin-shi No. 27 Nanke 3rd. Road Tainan 744 Taiwan

ISBN: (纸本)9782874870033

This paper presents a microstrip triplexer with multiband performances by using the simple cascaded resonators for reducing the circuit size. The three passband channels of the triplexer can be generated by using the stepped impedance resonators (SIRs) and the uniform impedance resonators (UIRs) when their fundamental and the higher order frequencies are properly assigned. The triplexer has only four simple resonators, thus the circuit size can be effectively reduced. Measured results of the proposed triplexer have a good agreement with the electromagnetic (EM) simulated results. © 2007 EuMA.

关键词： Resonators

来源：评论

学校读者我要写书评

暂无评论

Integration of field work and hyperspectral data for oil and gas exploration

Integration of field work and hyperspectral data for oil and...

引用

IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Daqi Xu Guoqiang Ni Tao Jiang Lili Jiang Mingmin Chi Satellite Data and Application China Centre for Resources Beijing China Dept. of Optical Engineering Beijing Institute of Technology China Dept. of Optical Engineering Beijing Institute of Technology Zhaoyuan Electric Power Company Shandong China Dept. of Computer Science and Engineering Fudan University Shanghai China

Hydrocarbon microseepage theory establishes a cause-and-effect relation between oil and gas reservoirs and special surface anomalies, mainly including surface hydrocarbons and related mineral alterations. Thus, diagnostic spectral features of hydrocarbons and mineral alterations are capable of providing reliable evidences for the oil and gas exploration. In the paper, the integrated practical system of exploring for oil, gas is introduced by using reflectance spectroscopy and hydrocarbon microseepage theory. This system is applied to processing and analyzing not only hyperspectral remote sensing data but also the data provided by field work. Furthermore, great efforts are focused on spectral model of hydrocarbon microseepage and Hyperion data classification algorithms. In our work, two exploration targets of natural gas are identified from the study area which covers 2100 km 2 . All the two exploration targets have been proven industrial reserves by China National Petroleum Corporation (CNPC) in July 2006.

关键词： Hyperspectral imaging Petroleum Hyperspectral sensors Minerals Hydrocarbon reservoirs Reflectivity Spectroscopy Remote sensing Classification algorithms Natural gas

来源：评论

学校读者我要写书评

暂无评论

TRACKING CONTROL IN THE PRESENCE OF NONLINEAR DYNAMIC FRICTIONAL EFFECTS: ROBOT EXTENSION

引用

Asian Journal of Control 2008年第3期1卷

作者： M. Feemster D.M. Dawson A. Behal W. Dixon Matthew Feemster received the B.S degree in Electrical Engineering from Clemson University Clemson South Carolina in December 1994. Upon graduation he remained at Clemson University and received the M.S. degree in Electrical Engineering in 1997. During this time he also served as a research/teaching assistant. His research work focused on the design and implementation of various nonlinear control algorithms with emphasis on the induction motor and mechanical systems with friction present. He is currently working toward his Ph.D. degree in Electrical Engineering at Clemson University. Darren M. Dawson was born in 1962 in Macon Georgia. He received an Associate Degree in Mathematics from Macon Junior College in 1982 and a B.S. Degree in Electrical Engineering from the Georgia Institute of Technology in 1984. He then worked for Westinghouse as a control engineer from 1985 to 1987. In 1987 he returned to the Georgia Institute of Technology where he received the Ph.D. Degree in Electrical Engineering in March 1990. During this time he also served as a research/teaching assistant. In July 1990 he joined the Electrical and Computer Engineering Department and the Center for Advanced Manufacturing (CAM) at Clemson University where he currently holds the position of Professor. Under the CAM director's supervision he currently leads the Robotics and Manufacturing Automation Laboratory which is jointly operated by the Electrical and Mechanical Engineering departments. His main research interests are in the fields of nonlinear based robust adaptive and learning control with application to electro-mechanical systems including robot manipulators motor drives magnetic bearings flexible cables flexible beams and high-speed transport systems. Aman Behal was born in India in 1973. He received his Masters Degree in Electrical Engineering from Indian Institute of Technology Bombay in 1996. He is currently working towards a Ph.D in Controls and Robotics at Clemson University. His research focuses on the control of no

In this paper, we extend the observer/control strategies previously published in [25] to an n -link, serially connected, direct drive, rigid link, revolute robot operating in the presence of nonlinear friction effects modeled by the Lu-Gre model. In addition, we also present a new adaptive control technique for compensating for the nonlinear parameterizable Stribeck effects. Specifically, an adaptive observer/controller scheme is developed which contains a feedforward approximation of the Stribeck effects. This feedforward approximation is used in a composite controller/observer strategy which forces the average square integral of the position tracking error to an arbitrarily small value. Experimental results are included to illustrate the performance of the proposed controllers.

关键词： Friction compensation nonlinear control

来源：评论

学校读者我要写书评

暂无评论

臺北盆地深開挖景美礫石層抽水數(值)模擬探討

臺北盆地深開挖景美礫石層抽水數(值)模擬探討

引用

2007海峡两岸岩土工程地工技术交流研讨会

作者： CHEN SHIH-HSIN 陳世欣 OU CHANG-YU 歐章煜 DEPT. OF COMPUTER APPLICATION ENGINEERING LAN-YANG INSTITUTE OF TECHNOLOGY 蘭陽技術學院電腦應用工程系 DEPT. OF CONSTRUCTION ENGINEERING TAIWAN UNIVERSITY OF SCIENCE TECHNOLOGY 臺灣科技大學營建系

本文针对台北盆地景美砾石层抽水数值模拟相关问题进行探讨，包括水文地质概念模式的建立、格网的分割、参数的设定以及边界条件等逐一讨论，并以台北盆地捷运工程道岔段深开挖群井抽水试验为例，应用地下水分析程式PROCESSING MODFLOW ... 详细信息

本文针对台北盆地景美砾石层抽水数值模拟相关问题进行探讨，包括水文地质概念模式的建立、格网的分割、参数的设定以及边界条件等逐一讨论，并以台北盆地捷运工程道岔段深开挖群井抽水试验为例，应用地下水分析程式PROCESSING MODFLOW 5.3建立较为简易的水文地质概念模式，进行水位泄降分析预测，此较为简化的模式虽有缺陷，但开挖区内的模拟水位成果与监测值相当接近，就工程应用的观点来看是一可考应且有效率的模式.

关键词：隧道深开挖工程抽水数值模拟系统地下水分析程式

来源：评论

学校读者我要写书评

暂无评论

FATIGUE DAMAGE CALCULATED BY RATIO-METHOD TO METALLIC MATERIALS WITH SMALL CRACK UNDER UNSYMMETRIC CYCLIC LOADING

引用

Chinese Journal of Mechanical engineering 2006年第2期19卷 312-315页

作者： YU Yangui LIU Xiang ZHANG Changsheng TAN Yanhua Zhejiang Guangxin New Technology Application Academy of Electromechanical and Chemical Engineering Hangzhou 310012 China School of Information and Electronic Engineering Zhejiang Science and Technology UniversityHangzhou 310023 China Computer Science and Engineering College Wenzhou UniversityWenzhou 325027 China

Based on the standpoint to take for the crack size also to be a damage variable like the damage variable, by means of the two-directions coordinate system, several new calculation equations on the small crack growth rate are suggested for describing the elastic-plastic behavior of some metallic materials. And the estimation formulas of life are also suggested relative to varied small crack size at each loading history, which is unsymmetric cyclic loading. In the calculation method, as a loaded stress-strain parameter to adopt the ratio with plastic strain range to elastic strain range, and as the material constants using the typical material parameters in damage calculation expression, a new concept of the compositive material constant, which has functional relation with the typical material constants, average stress, average strain, critical loading time is given out. In addition, the fatigue damage of a part of car is put up to calculate as an example, its calculation results are accordant with the Landgraf＇s equation, and calculation precision is more rigorous, so could avoid unnecessary fatigue tests and will be of practical significance on saving times, manpower and capitals, as well as the convenience for engineering applications.

关键词： Ratio-method Unsymmetric cycle Typical material constant Small crack Growth rate

来源：评论

学校读者我要写书评

暂无评论

An effective fusion technique based on signal to noise ratio

An effective fusion technique based on signal to noise ratio

引用

2006 Annual India Conference, INDICON

作者： Gopalan, N.P. Batri, K. Department of Computer Application National Institute of Technology Tiruchirappalli-15 India Department of Computer Science and Engineering National Institute of Technology Tiruchirappalli-15 India

ISBN: (纸本)1424403707

Information Retrieval (IR) is the process of retrieving information that is relevant to the users' needs. Data fusion in IR usually combines the various retrieval schemes (strategies) to enhance the performance of the IR systems. Though, the fusion operation successfully combines the merits of all participating member strategies, some of them may affect it's performance. Hence, it is essential to eliminate role of the worst performing members. This paper focuses on a method, which effectively combines the best functioning schemes. In the proposed approach, assignment of the final relevance score to the documents is based on the principle of signal to noise ratio. An algorithm is used to separate the best performing (information bearings) schemes from the worst (noise) ones. The presented method is tested in three test document collections namely ADI, MED, and CISI and it has been identified that, the proposed approach results in significant improvement over the existing Comb-functions for combining scores. © 2006 IEEE.

关键词： Signal to noise ratio

来源：评论

学校读者我要写书评

暂无评论

Combining WS-policy and aspect-oriented programming

Combining WS-policy and aspect-oriented programming

引用

Advanced International Conference on Telecommunications andInternational Conference on Internet and Web applications and Services, AICT/ICIW'06

作者： Ortiz, Guadalupe Leymann, Frank Quercus Software Engineering Group University of Extremadura Computer Science Department Spain Institute of Architecture of Application Systems University of Stuttgart Germany

ISBN: (纸本)0769525229

Web Service technologies offer a successful way for interoperability among applications. However, although current approaches are beginning to address how to specify non-functional capabilities in Web Services at description level, they have so far failed to propose an acceptable method to decouple the named capabilities from Web Service implementations, resulting in a large amount of code scattered and tangled all over the application. Considering it is our desire to minimize middleware participation in nonfunctional properties management, it is the aim of this paper to describe how aspect-oriented techniques can be used in conjunction with WS-Policy in order to allow the mentioned properties to be completely decoupled at description and implementation level, thus improving their reusability and service maintenance and evolution. © 2006 IEEE.

关键词： Telecommunication services

来源：评论

学校读者我要写书评

暂无评论

Neural network's learning algorithm based on interval optimization

引用

Jisuanji Gongcheng/computer engineering 2006年第4期32卷 192-193+216页

作者： Xue, Jiwei Li, Yaohui Chen, Dongfang Computer Science and Engineering College Daqing Petroleum Institute Daqing 163318 China Chengdu Institute of Computer Application Chinese Academy of Sciences Chengdu 610041 China

Neural networks are usually trained using local gradient-based procedures. Such methods frequently found sub-optimal solutions being trapped in local minima. In solving some application problems, the input/output data sets used to train a neural network may not be hundred percent precise but within certain range. It is difficult for the traditional neural network to solve such problems. A learning algorithm based on interval optimization is presented in this paper. The above disadvantages of the traditional learning algorithm are settled by using this method.

关键词： Global optimization Interval arithmetic Learning algorithm Neural network

来源：评论

学校读者我要写书评

暂无评论

Extended web services framework to meet non-functional requirements 06

Extended web services framework to meet non-functional requi...

引用

Sixth International Conference on Web engineering, ICWE 2006

作者： Singhera, Zafar U. Shah, Abad Ali Cisco Systems Application Oriented Networking Group 375 E. Tasman Dr. San Jose CA 95134 United States R and D Center of Computer Science University of Engineering and Technology Lahore Pakistan

ISBN: (纸本)1595934359

Non-functional requirements/characteristics are important for providing effectively every kind of services including web services. A realistic web service must meet both functional and non-functional requirements of its consumers. Therefore, it is important that a web services framework is augmented so that non-functional characteristics of a web service can be determined at run-time and consumers are bound to a service that best meet their functional as well as non-functional requirements. In this paper, we propose an extension of the existing web services framework that enables a collection of functional and non-functional service characteristics at run-time, and usage of the collected data in discovery, binding, and execution of web services. Descriptions of new and enhanced components of the proposed framework are also presented. Typical publishing and usage scenarios in the proposed framework are also described.

关键词： Web services

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：