检索结果-内蒙古大学图书馆

Time frequency analysis for action conversion characteristics of surface electromyography signals

ICIC Express Letters, Part B: Applications 2012年第5期3卷 1041-1046页

作者： You, Bo Zhao, Hanqing Huang, Ling Zhou, Lina Institute of Automation Harbin University of Science and Technology No. 52 Xuefu Road Nangang Dist. Harbin 150080 China Academy of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology No. 52 Xuefu Road Nangang Dist. Harbin 150080 China

The electromyography (EMG) pattern recognition and classification of intentional movements for control of multifunctional prostheses have adopted steady state data. Actually, most of human body's movements are continuous, so the action conversion points are determined for continuous movements of human hand in this study. Ten healthy adults (5 men and 5 women;25±3 year) participated in the EMG signals measurement experiments. Surface EMG signals were obtained from flexors carpi of forearm. Four singles and two continuous actions are designed in this experiment. The short-time energy time frequency analysis is employed to determine action conversion points. In the experiment, subjects do not need to train. The result suggests that the short-time energy time frequency analysis is suitable for determination of continuous action conversion points. This method is promising and simple, and it is expected to be employed in identification of continuous hand actions. © 2012 ICIC International.

关键词： Electromyography

来源：评论

学校读者我要写书评

暂无评论

Experimental Smart Grid

引用

IFAC Proceedings Volumes 2012年第7期45卷 416-419页

作者： F. Zezulka O. Sajdl Z. Bradac J. Sembera Brno University of Technology Department of Control and Instrumentation Faculty of Electrical Engineering and Communication Kolejní 2906/4 Brno 612 00 Czech Republic CVVOZE - Centre for Research and Utilization of Renewable Energy Brno CZ CEITEC - Central European Institute of Technology Brno CZ

The paper deals with activities towards a design of a methodology to stabilize already existing electrical grids and at the same time utilize the maximum of electrical energy from renewable electrical energy sources. The authors believe that the first step towards a methodology is to create a thorough model of the electrical grid with connecting most suitable existing renewable as well as classic electric energy sources. There is also described an idea of an experimental smart grid, but the main attention is given to the physical realization of a laboratory model of the smart grid. The authors described an electronic design and an idea of control strategy to enhance a functionality, stability and effectiveness of the grids with a significant share of the renewable energy sources.

关键词： smart grid SCADA energy monitoring modeling optimal control

来源：评论

学校读者我要写书评

暂无评论

Face measuring based on active & passive vision fusion

Face measuring based on active & passive vision fusion

引用

6th International Forum on Strategic technology, IFOST 2011

作者： Wang, Yang Zhao, Lei Yu, Xiaoyang Sun, Yu College of Measurement-Control and Communication Engineering Harbin University of Science and Technology Harbin China

ISBN: (纸本)9781457703966

Three-dimensional (3D) face recognition, as an important tool of modern authentication, is being causing concerns interests by more and more researcher. In this paper, a 3D measuring device for Chine-se adult's facial data based on Gray coding structured light and stereo vision was designed. The measuring model was built based on the Measuring principle. After errors analyzing, the error of image coordinate extracting is determined as the largest error source for measuring result. The results of experiments show that this design is feasible, and the acquirement of the 3D data of human face is achieved. The reconstruct surface is similar in the visual effects, and the surface of human face could be display smoothly and detail. © 2011 IEEE.

关键词： Stereo vision

来源：评论

学校读者我要写书评

暂无评论

The research of low-power design method based on SOC test controller

The research of low-power design method based on SOC test co...

引用

6th International Forum on Strategic technology, IFOST 2011

作者： Gu, Jing Guibo, Han Yu, Xiaoyang Institute of Computer Science and Technology Harbin University of Science and Technology Harbin China Institute of Measurement and Control Technology and Communication Engineering Harbin University of Science and Technology Harbin China

ISBN: (纸本)9781457703966

Considered from the test structure, test time, test power, the paper based on the IEEEstd1500 standards, the first reference in the test circuit is to build a structure of SOC testing, including test cases and test shell test controller., SOCd695 were completed by SOC test scheduling TAM through Optimization of neural network after simulation. In order to achieve optimal low-power SOC design of the tcu test control unit, use the adoption of innovative parity algorithm in descending order before test scheduling, to to reduce the testing of all nodes in the transition activities to reduce the power consumption of SOC test structure. Experimental results show that this method is better to reduce power consumption, lower the cost of test. © 2011 IEEE.

关键词： Electric power utilization

来源：评论

学校读者我要写书评

暂无评论

Research of Uninformative Variable Elimination method for spectral data analysis of milk

Research of Uninformative Variable Elimination method for sp...

引用

6th International Forum on Strategic technology, IFOST 2011

作者： Wang, Lijie Guo, Jianying Ding, Xibo Zhou, Zhen Bai, Yamei Qin, Yong College of Measurement and Control Technology and Communication Engineering Higher Educational Key Laboratory for Measuring and Control Technology Harbin University of Science and Technology Harbin China

ISBN: (纸本)9781457703966

During the NIR spectral analysis to quickly determine concentrations of essential components of milk, spectral region is wider, peaks are overlap, and searching space is larger, spectrum acquiring often subjects to interference coming from environmental noise and interference of other components, so it is necessary to make optimum selecting to wavelength variables. In this paper, for concentration of protein in milk samples, Uninformative Variable Elimination (UVE) method is used to make optimum selecting to wavelength variables, and the selected wavelengths are taken as the input variables to build PLS model. Prediction results of PLS model built after processed by the UVE method is respectively compared with results of the PLS model by Genetic Algorithms (GA) method and results of the PLS model without making wavelength variable selection. The result shows that the UVE-PLS model has great advantage comparing with the GA-PLS model, and using the UVE method to select the wavelength variable of milk spectrum can make variable numbers for the final PLS model become smaller, redundant information become minimize, robustness of model become steady, and testing time of spectrum acquiring become shorter. © 2011 IEEE.

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

RedJsod: A Readable JavaScript Obfuscation Detector Using Semantic-based Analysis

RedJsod: A Readable JavaScript Obfuscation Detector Using Se...

引用

IEEE International Conference on Trust, Security and Privacy in Computing and communications (TrustCom)

作者： Ismail Adel AL-Taharwa Hahn-Ming Lee Albert B. Jeng Kuo-Ping Wu Ching-Hao Mao Te-En Wei Shyi-Ming Chen Department of Computer Science and Information Engineering National Taiwan University of Science and Technology Taipei Taiwan Institute of Information Science Academia Sinica Taipei Taiwan Department of Computer Science Jinwen University of Science and Technology Taipei Taiwan Information and Communication Security Center Institute for Information Industry Taipei Taiwan Graduate Institute of Educational Measurement and Statistics National Taichung University of Education Taichung Taiwan

ISBN: (纸本)9780769547459

JavaScript allows Web-developers to hide intention behind their code inside different looking scripts known as Obfuscated code. Automatic detection of obfuscated code is generally tackled from readability perspective. However, recently obfuscation exhibits patterns that modify both syntax and semantic characteristics while preserving readability characteristic. There are two problems in dealing with readable obfuscation: 1. Difficulty in locating it since it does not manipulate suspicious strings. 2. It is a common and essential practice adopted in both benign codes and malicious codes. In this work, we first investigate why and how readable obfuscation can hinder detection of maliciousness and prevent the static analysis of suspicious scripts. Next, we propose a readable JavaScript obfuscation detector (RedJsod) system to deal with this type of threat. RedJsod is a well defined detector based on variable length context-based feature extraction (VCLFE) scheme that takes advantages of abstract syntax tree (AST) representation of a given JavaScript code to infer run-time behaviors statically. We applied RedJsod to three datasets collected from real world Web-pages to evaluate its effectiveness. Also, we tested RedJsod on well-known readable obfuscation samples cited in related works as a proof of concept illustration. Our experimental results indicated that RedJsod achieved very high detection rates (greater than 97%) in terms of accuracy, eliminated false negatives completely, while at the same time yielded very few false positives.

关键词： Feature extraction Context Abstracts Detectors Context modeling Encoding Malware

来源：评论

学校读者我要写书评

暂无评论

The visualization simulation platform design of low-voltage power line carrier communication system

The visualization simulation platform design of low-voltage ...

引用

6th International Forum on Strategic technology, IFOST 2011

作者： Zhang, Xuhui Zhao, Yingjie Jia, Junfeng Zhang, Bin Liu, Ja Higher Educational Key Laboratory for Measuring and Control Technology Measurement-Control and Communication Institute Harbin University of Science and Technology Harbin 150080 China

ISBN: (纸本)9781457703966

There are three steps to establish the visualization simulation platform of low-voltage power line carrier communication system. Firstly, we establish the MARLAB/Simulink simulation platform to simulate low-voltage power line carrier communication system. The simulation platform bases on the analysis of power line channel characteristics and take the multipath channel transmission model of *** and ***. Then, we actually measure a large of noise, and the collected data of noise is made of MAT file. We use the SIMULINK's From File model to set up the noise simulation model based on the analysis of noise characteristics. Lastly, through the parameters of channel and simulation are inputted in the designing GUI interface in order to control the process of system simulation, we realize the visualization of system simulation based on the object-oriented thought. Based on setting up the platform, it is proof that using the adaptive OFDM technology can overcome the frequency-selective fading characteristics of power line channel transmission, enhance the system's anti-interference capability and realize the reliable high-speed data communication. © 2011 IEEE.

关键词： Orthogonal frequency division multiplexing

来源：评论

学校读者我要写书评

暂无评论

Repetitive process based iterative learning control for a two motors system

Repetitive process based iterative learning control for a tw...

引用

IEEE Conference on control technology and Applications (CCTA)

作者： Lukasz Hladowski Krzysztof Galkowski Eric Rogers Lan Zhou Yong He Anton Kummert Institute of Control and Computation Engineering University of Zielona Gora Poland Electronics and Computer Science University of Southampton Southampton UK School of Information and Electrical Engineering Hunan University of Science and Technology Xiangtan China School of Information Science and Engineering Central South University Changsha China Electrical Information and Media Engineering Communication Theory University of Wuppertal Germany

This paper uses a 2D systems setting, based on the control theory for repetitive processes, to design an iterative learning control law with particular emphasis on the commonly encountered problem of maintaining a specified rotational speed of shaft where disturbances introduce irregularities in the speed achieved. The two motors system is a model for this problem and is used as the basis for a simulation study of the performance of the final design.

关键词： Stability analysis Asymptotic stability State-space methods Convergence Vectors DC motors Process control

来源：评论

学校读者我要写书评

暂无评论

Innovation performance of construction enterprises: An empirical assessment of the German and Singapore construction enterprises

引用

Construction Innovation 2011年第3期11卷 282-304页

作者： Lim, Jay Na Peltner, Frank Institute for Industrial Production Karlsruhe Institute of Technology Karlsruhe Germany Institute for Measurement and Control Engineering University of Siegen Siegen Germany

Purpose - The complex interactions between firm- and industry-specific factors within a national context and their impacts on innovation often hinder construction enterprises' efforts in optimising their innovation performance. The purpose of this paper is to employ the Cobb-Douglas empirical production model to develop an innovation production function that illustrates the input and output factors relating to the innovation performance of construction firms. Design/methodology/approach - Applying these factors to a dataset comprising economic and innovation statistics over 20 years for Germany and Singapore, regression analyses were conducted to investigate the critical resources that contribute to the innovation performance of German and Singaporean construction firms. Findings - The findings indicated that the maturity of the innovation landscape in Germany cultivates the strength of German construction firms in developing unique firm-specific resources that pushes their competitiveness edge. In Singapore, construction firms' dependence on the nation's basic science and technology research leads to weak firm dynamics and innovation capabilities. Originality/value - It is recommended that in Singapore, the government should focus on the strength of their relationships with construction enterprises to aid the development of construction firms' Ramp;D capabilities. The primary recommendation for both German and Singapore construction firms is to develop a system of knowledge documentation and distribution that facilitates systematically reapplications of know-how, enabling construction firms to develop sustainable competitiveness through unique knowledge assets. Copyright © 2011 Emerald Group Publishing Limited. All rights reserved.

关键词： Construction management Germany Innovation Singapore

来源：评论

学校读者我要写书评

暂无评论

Quantum filtering for systems driven by fields in single-photon states or superposition of coherent states

引用

Physical Review A 2012年第4期86卷 043819-043819页

作者： John E. Gough Matthew R. James Hendra I. Nurdin Joshua Combes Institute of Mathematics and Physics Aberystwyth University SY23 3BZ Wales United Kingdom ARC Centre for Quantum Computation and Communication Technology Research School of Engineering Australian National University Canberra ACT 0200 Australia Research School of Engineering The Australian National University Canberra ACT 0200 Australia Center for Quantum Information and Control University of New Mexico Albuquerque NM 87131-0001 USA

We derive the stochastic master equations, that is to say, quantum filters, and master equations for an arbitrary quantum system probed by a continuous-mode bosonic input field in two types of nonclassical states. Specifically, we consider the cases where the state of the input field is a superposition or combination of (1) a continuous-mode, single-photon wave packet and vacuum, and (2) any continuous-mode coherent states.

关键词： QUANTUM theory PHOTONS SUPERPOSITION principle (Physics) COHERENT states STOCHASTIC processes COMBINATIONS (Mathematics)

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：