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检索条件"任意字段=3rd IEEE Intelligent Data Acquisition and Advanced Computing Systems"

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acquisition and recognition method of throwing information for shot-put athletes

引用

3rd International Conference on intelligent computing

作者： Gao, Zhen Shen, Huanghuan Xie, Shuangwei Lei, Jianhe Zhang, D. Ge, Yunjian Chinese Acad Sci Inst Machine Intelligence POB 1130 Hefei 2300031 Anhui Peoples R China Univ Sci & Technol China Dept Automat Hefei Peoples R China Qingdao Technol Univ Coll Automat Qingdao 266033 Peoples R China Univ Ontario Inst Technol Fac Engn & Appl Sci Oshawa ON L1H 7K4 Canada

ISBN: (纸本)9783540741701

This paper presents a digital shot system based on three dimensions integrated accelerometer. The digital shot with almost the same size and weight as the standard shot for open female has been designed, fabricated and tested. The data collecting and processing system, human-machine interface and athlete train guiding system are illuminated in detail. By using wavelet transformation, the characteristics of acceleration signals during the shot-putting period can be extracted. In this manner, the force sensing system serves as a powerful toot for coaches and sports scientists to make scientific researches on shot-put techniques. It also provides an intuitive and reliable guidance for the shot-put athletes to improve their skills.

关键词： Digital signal processing

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Energy-efficient data acquisition using a distributed and self-organizing scheduling algorithm for wireless sensor networks

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3rd ieee International Conference on Distributed computing in Sensor systems

作者： Chatterjea, Supriyo Nieberg, Tim Zhang, Yang Havinga, Paul Univ Twente Dept Comp Sci POB 217 NL-7500 AE Enschede Netherlands Univ Bonn Res Inst Discrete Math Bonn 53113 Germany

ISBN: (纸本)9783540730897

Wireless sensor networks are often densely deployed for environmental monitoring applications. Collecting raw data from these networks can lead to excessive energy consumption. Thus using the spatial and temporal correlations that exist between adjacent nodes we appoint a few as representative nodes that perform in-network aggregation. This reduces the total number of transmissions. Our distributed scheduling algorithm autonomously assigns a particular node to perform aggregation and reassigns schedules when network topology changes. These topology changes are detected using cross-layer information from the underlying MAC layer. We also present theoretical performance estimates and upper bounds of our algorithm and evaluate it by implementing the algorithm on actual sensor nodes, demonstrating an energy-saving of up to 80% compared to raw data collection.

关键词： Scheduling algorithms

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A hybrid model with a weighted voting scheme for feature selection in machinery condition monitoring

A hybrid model with a weighted voting scheme for feature sel...

引用

3rd ieee International Conference on Automation Science and Engineering, ieee CASE 2007

作者： Kui, Zhang Ball, Andrew Fengshou, Gu Yuhua, Li School of Mechanical Aerospace and Civil Engineering University of Manchester Manchester M60 1QD United Kingdom School of Computing and Intelligent Systems University of Ulster Londonderry BT48 7JL United Kingdom

ISBN: (纸本)1424411548

Feature selection method has become the focus of research in the area of engineering data processing where there exists a large amount of high-dimensional data from the high-frequency acquisition system. For high-dimensional data processing, engineers often resort to feature extraction methods and statistical theories to convert the original features into new features. However, the converted data always lose the engineering meaning of the original features and the choice and use of conversion methods are challenging. In this paper, a hybrid feature selection model is presented to select the most significant input features from all potentially relevant features. The algorithm combines a filter model with a wrapper model. In the filter model, four variable ranking methods are used to pre-rank the candidate features. These four methods including Pearson correlation coefficient, Relief algorithm, Fisher score and Class separability, measure features from various angles, which leads to different ranking results. Therefore, a weighted voting scheme is introduced to re-rank features based on the degree of significance of the four methods on the classification error rate of Radial Basis Function (RBF) classifier. In wrapper model, a Binary Search (BS) method and a Sequential Backward Search (SBS) method are utilized to minimize the number of relevant features when promising to keep the classification error rate of RBF classifier below a given threshold. To demonstrate the potential of applying the method to large-scale engineering data processing, a case study is conducted. ©2007 ieee.

关键词： Engineering research

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Timing Tracking Algorithms for Impulse Radio (IR) Based Ultra Wideband (UWB) systems

Timing Tracking Algorithms for Impulse Radio (IR) Based Ultr...

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3rd International Conference on Wireless Communications, Networking and Mobile computing (WiCOM 2007)

作者： Huang, Li El Ghouti, Norddin Rousseaux, Olivier Gyselinckx, Bert Holst Ctr IMEC NL Eindhoven Netherlands

ISBN: (纸本)9781424413119

Recently, we have proposed low power transceiver architectures for impulse radio (IR) based ultra wideband (UWB) systems. Low power consumption is achieved thanks to the low duty cycle of UWB-IR signals, which allows to switch on the radio front-ends only for the instants where UWB pulses must be transmitted or received. Therefore, accurate synchronization of the receiver's timing reference with the incoming UWB signal's timing is critical in this context to avoid dramatic performance loss. Before data demodulation, the receiver's timing reference is usually aligned with the incoming signal's timing by using timing acquisition algorithms that rely on a known preamble. However, during data demodulation that is after timing acquisition algorithms, the offset between the crystal oscillators used at the transmitter and receiver still causes the receiver's timing reference to gradually drift away from the incoming signal's timing. In this paper, we first show that this problem causes dramatic performance degradation if not addressed. We then propose three low-complexity algorithms that allow tracking and compensating for the timing drift In our low duty-cycle context. Our simulation results show that theproposed algorithms are able to cope with the offset corresponding to the accuracy of typical crystal oscillators with minimal performance degradation. Moreover, one of the proposed algorithms is able to partially compensate for potential errors of timing acquisition algorithms that result in misalignments of the incoming UWB signal's timing and receiver's timing reference at the start of data demodulation.

关键词： UWB impulse radio tracking clock offset timing recovery

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Economies of Scale through Virtualization of SAP® R/3® systems RWE systems computing GmbH

Economies of Scale through Virtualization of SAP® R/3® Sys...

引用

ieee International Workshop on intelligent data acquisition and advanced computing systems: Technology and Applications

作者： M. Stephan J. Hellwig manfred.stephan@*** joerg.hellwig@***

As a result of a permanent search for cost digression and quality improvements the aspects of virtualized servers to operate R/3reg landscapes has to be taken into consideration from the perspective of an IT services ... 详细信息

关键词： Economies of scale Costs Hardware Application software Application virtualization Read-write memory Capacity planning Resource management Conferences data acquisition

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3-D Hall Sensor for use in Navigation systems for Surgery Endovascular Interventions

3-D Hall Sensor for use in Navigation Systems for Surgery En...

引用

4th ieee Workshop on intelligent data acquisition and advanced computing systems: Technology and Applications (IDAACS 2007), part 1

作者： Konstantin Dimitrov Institute of Control and System Research (ICSR) Bulgarian Academy of Sciences Sofia Bulgaria

This paper presents the design of a 3-D Hall sensor compatible with standard silicon IC technology. This magnetic Hall effect sensor is intended to be fitted at the tip of a catheter for use in a magnetic-based navigation system for endovascular interventions. Unfortunately, at the present the general feeling is that vector Hall sensors can not be used for clinical trials, mainly because of their large size and low sensitivity. Proposed 3-D silicon Hall sensor has denied suspicions with its advantages: simultaneous on line 3-D measurement of the magnetic field components;high spatial resolution 150 μm × 150 μm × 100 μm;the lowest detected magnetic induction of the three output channels is about 15-20 μT;magnetosensitivities of the three channels at a supply current 10 mA reach 360 μA/T for B{sub}x and B{sub}y, 250 μA/T for B{sub}v respectively.

关键词： Endovascular interventions 3-D Hall sensor Magnetic-based navigation system

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A New Incremental Face Recognition System

A New Incremental Face Recognition System

引用

ieee International Workshop on intelligent data acquisition and advanced computing systems: Technology and Applications

作者： Youness Aliyari Ghassabeh Abouzar Ghavami Hamid Abrishami Moghaddam K.N. Toosi University of Technology Tehran Iran Sharif University of Technology Tehran Iran

In this paper, we present new adaptive linear discriminant analysis (LDA) algorithm and apply them for adaptive facial feature extraction. Adaptive nature of the proposed algorithm is advantageous for real world applications in which one confronts with a sequence of data such as online face recognition and mobile robotics. Application of the new algorithm on feature extraction from facial image sequences is given in three steps: (i) adaptive image preprocessing, (ii) adaptive dimension reduction and (iii) adaptive LDA feature estimation. Steps 1 and 2 are done simultaneously and outputs of stage 2 are used as a sequence of inputs for stage 3. The proposed system was tested on Yale and PIE face databases. Experimental results on these databases demonstrated the effectiveness of the proposed system for adaptive estimation of feature space for online face recognition.

关键词： Face recognition Linear discriminant analysis Image databases Spatial databases Facial features data mining Mobile robots Feature extraction Image sequences System testing

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Remote Sensing in Decision Support systems: Using Fuzzy Post Adjustment in Localisation of Weed Prediction

Remote Sensing in Decision Support Systems: Using Fuzzy Post...

引用

intelligent Sensors, Sensor Networks and Information Processing Conference (ISSNIP)

作者： Andrew Chiou Xinghuo Yu School of Computing Sciences Central Queensland University Rockhampton QLD Australia School of Electrical and Computer Engineering RMIT University Melbourne VIC Australia

This paper explores the post adjustment of input data from a remote source to fit localised weed prediction for the control and management of weed infestation. The deployment of decision support systems in agricultural sectors often require refinement of its results to adapt to data that has been acquired externally via remote sensing. This paper will detail the fuzzy meta-consequent functions to facilitate the post adjustment. A case study is presented to demonstrate the workability of such fuzzy post-adjustment in the prediction of weed infestation.

关键词： Remote sensing Decision support systems Fuzzy systems databases Australia data engineering Knowledge acquisition Knowledge engineering Control systems Engineering management

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FPGA-Based advanced Real Traffic Light Controller System Design

FPGA-Based Advanced Real Traffic Light Controller System Des...

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ieee International Workshop on intelligent data acquisition and advanced computing systems: Technology and Applications

作者： WM El-Medany MR Hussain CE Department IT College UOB Bahrain Spatial Information Research Geomatics ApS Manama Bahrain

Traffic light controller establishes a set of rules and instructions that drivers, pilots, train engineers, and ship captains rely on to avoid collisions and other hazards. Traffic control systems include signs, lights and other devices that communicate specific directions, warnings, or requirements. Traffic light controller (TLC) has been implemented using microcontroller FPGA, and ASIC design. FPGA has many advantages over microcontroller, some of these advantages are; the speed, number of input/output ports and performance which are all very important in TLC design, at the same time ASIC design is more expensive than FPGA. Most of the TLCs implemented on FPGA are simple ones that have been implemented as examples of FSM. This paper concerned with an FPGA design implementation of a low cost 24-hour advanced traffic light controller system that was built as a term project of a VLSI design subject using VHDL. The implemented traffic light is one of the real and complex traffic lights in Kingdom of Bahrain, for four roads and motorway with sensors and camera. The system has been successfully tested and implemented in hardware using Xilinx Spartan 3 FPGA. The system has many advantages over the exciting TLC.

关键词： Lighting control Control systems Field programmable gate arrays Communication system traffic control Microcontrollers Application specific integrated circuits Marine vehicles Road accidents Hazards Traffic control

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Design of a Non-Volatile Ambulatory data acquisition and Control System for a Brain-Computer Interface

Design of a Non-Volatile Ambulatory Data Acquisition and Con...

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International ieee/EMBS Conference on Neural Engineering, CNE

作者： T. E. Doyle A. Ieta Z. Kucerovsky Department of Electrical and Computer Engineering McMaster University Hamilton ONT Canada Department of Engineering and Physics Murray State University Murray KY USA Department of Electrical and Computer Engineering University of Western Ontario London ONT Canada

Brain-computer interface (BCI) research is primarily conducted with equipment designed for the considerable spatial and temporal requirements needed for the observation of brain current anomalies. For ambulatory in situ evaluation the implementation of BCI models will require a smaller and inexpensive platform. As the field of ambulatory/wearable computing continues to mature, the greatest benefit will be observed in the integration of BCI into augmentative and rehabilitative prosthetics. This paper presents a specification and design for an inexpensive modular BCI platform that may be used for ambulatory data collection, processing, and control.

关键词： data acquisition Control systems Brain computer interfaces Wearable computers Electroencephalography Biomedical monitoring Computer interfaces Costs USA Councils Prosthetics

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