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An efficient ICA approach based on neural network framework for biomedical applications

An efficient ICA approach based on neural network framework ...

2010 6th IEEE World Congress on Computational Intelligence, WCCI 2010 - 2010 International Joint Conference on Neural Networks, IJCNN 2010

作者： Lin, Yue-Der Hsu, Chih-Yu Chen, Hung-Yun Tseng, Kuo-Kun Department of Automatic Control Engineering Master Program of Biomedical Informatics and Biomedical Engineering Feng Chia University Taichung Taiwan Department of Information and Communication Engineering Chaoyang University of Technology Wufeng Taichung County Taiwan Department of Automatic Control Engineering Feng Chia University Taichung Taiwan Department of Computer Science and Engineering HungKuang University Taichung Taiwan

ISBN: (纸本)9781424469178

The paper developed a block-wise approach for ICA algorithms which can improve the computational efficiency of ICA without the degradation of performance for the separation of biomedical signals. Source signals including electrocardiogram (ECG), electromyogram (EMG) and 60-Hz sinusoid are linearly mixed for experimental tests. The mean-square errors (MSE) between the original sources and the separated signals are calculated for the evaluation of separation performance. These results demonstrated that the proposed block-wise approach can achieve the desired separation performance of signals in a more efficient way. © 2010 IEEE.

关键词： Independent component analysis

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A preliminary study on design and development of template-based for license plate recognition system applying artificial coordinates auxiliary techniques

A preliminary study on design and development of template-ba...

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IEEE International Conference on Industrial Engineering and Engineering Management, IEEM2010

作者： Shih, Bih-Yaw Chen, Chen-Yuan Kuo, Jin-Wei Chen, Po-Wei Chen, Tsung-Hao Chen, Chen-Wu Chung, Pei-Yin Lee, Wan-I Department of Computer Science National Pingtung University of Education No. 4-18 Ming Shen Rd. Pingtung 90003 Taiwan Doctoral Program in Management National Kaohsiung First University of Science and Technology Kaohsiung Taiwan Departments of Business Administration Shu-Te University Yen Chau Kaohsiung 82445 Taiwan Institute of Maritime Information and Technology National Kaohsiung Marine University Taiwan Department of Information Management Meiho University 23 Pingguang Rd. Neipu Pingtung Taiwan Marketing and Distribution Management National Kaohsiung First University of Science and Technology 2 Jhuoyue Rd. Nanzih Kaohsiung 811 Taiwan

ISBN: (纸本)9781424485031

With the rapid improvement of technology and economy, the percentage of transportation, like automobile, gradually increases. However, the number of cars increases, the methods of management stretches lots of problems, such as parking, traffic and thievery. Hence, Intelligent Transportation System (ITS) have been emphasized step by step and set up one after another around the world. In addition, ITS also established in Taiwan on July 20, 1998. ©2010 IEEE.

关键词： Template matching

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CALE: A Context-Aware Living Environment Based on Zigbee Sensor Network

CALE: A Context-Aware Living Environment Based on Zigbee Sen...

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International Conference on Mobile Ad-hoc and Sensor Networks, MSN

作者： Kun-Ming Yu Jian-Yuan Liou Bo-Han Yeh Chang Wu Yu Ching-Cheng Tien Chih-Hu Wang Ping-Yu Wang Department of Computer Science and Information Engineering Chung Hua University Taiwan Program of Technology Management Chung Hua University Taiwan Department of Electrical Engineering Chung Hua University Taiwan

The paper employed some independently developed sensors based on the Octopus X platform to build a Zigbee-based Sensor Networks. Also, we implemented a Location-aware living environment by deploying the developed Zigee-based sensor. Besides, through the created window console interface, the sensed data can be transmitted and transformed to the database for further utilized. Moreover, by the devised Web interface, the update request data can be observed efficiently and responded effectively to any situations.

关键词： Zigbee Wireless sensor networks Software Hardware Wireless communication Databases Temperature sensors

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Partial response maximum likelihood sequence detector for a nonlinear magnetic recording channel

Partial response maximum likelihood sequence detector for a ...

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International Conference on System science and Engineering (ICSSE)

作者： Tsai-Sheng Kao Chiu-Hsiung Chen Sheng-Chih Chen Sheng-Yun Hou Yuan-Chang Chang Xsing-Bang Chou Department of Electronic Engineering Hwa-Hsia College of Technology and Commerce Taipei Taiwan Department of Computer Science and Information Engineering China University of Technology Hsinchu Taiwan Graduate Program of Digital Content and Technologies Chengchi University Taiwan

The nonlinear effects of partial erasure and transition shift, however, often limit the performance attained by the partial response maximum likelihood (PRML) detector because of model mismatch. Conventionally, the nonlinear effects are either ignored or approximated by linearization technique. In the article, a PRML detector for the PR4 model including the nonlinear effects has been developed to improve the detector performance. The new representation is more accurate and the corresponding PRML detector has better performance without increasing the realization complexity. computer simulation results show that the new representation outperforms the conventional ones due to the enhanced modeling capability. The method is also expected to be applied in the high order partial response channel.

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Technologies for continuous glucose monitoring: Current problems and future promises

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Journal of Diabetes science and technology 2010年第6期4卷 1540-1562页

作者： Vaddiraju, Santhisagar Burgess, Diane J. Tomazos, Ioannis Jain, Faquir C. Papadimitrakopoulos, Fotios Nanomaterials Optoelectronics Laboratory Institute of Materials Science University of Connecticut Storrs CT United States Biorasis Inc. Technology Incubation Program University of Connecticut Storrs CT United States Department of Pharmaceutical Sciences University of Connecticut Storrs CT United States Electrical and Computer Engineering University of Connecticut Storrs CT United States Department of Chemistry University of Connecticut Storrs CT United States

Devices for continuous glucose monitoring (CGM) are currently a major focus of research in the area of diabetes management. It is envisioned that such devices will have the ability to alert a diabetes patient (or the parent or medical care giver of a diabetes patient) of impending hypoglycemic/ hyperglycemic events and thereby enable the patient to avoid extreme hypoglycemic/hyperglycemic excursions as well as minimize deviations outside the normal glucose range, thus preventing both life-threatening events and the debilitating complications associated with diabetes. It is anticipated that CGM devices will utilize constant feedback of analytical information from a glucose sensor to activate an insulin delivery pump, thereby ultimately realizing the concept of an artificial pancreas. Depending on whether the CGM device penetrates/breaks the skin and/or the sample is measured extracorporeally, these devices can be categorized as totally invasive, minimally invasive, and noninvasive. In addition, CGM devices are further classified according to the transduction mechanisms used for glucose sensing (i.e., electrochemical, optical, and piezoelectric). However, at present, most of these technologies are plagued by a variety of issues that affect their accuracy and long-term performance. This article presents a critical comparison of existing CGM technologies, highlighting critical issues of device accuracy, foreign body response, calibration, and miniaturization. An outlook on future developments with an emphasis on long-term reliability and performance is also presented. © Diabetes technology Society.

关键词： Accuracy Calibration Continuous glucose monitoring Glucose detection Glucose sensors Invasiveness

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Development of mechanisms for MAC channel selection to improve the performance of IEEE 802.15.4 beacon-enabled network

Development of mechanisms for MAC channel selection to impro...

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IEEE International Conference on Broadband Network & Multimedia technology (IC-BNMT)

作者： Chang Hsiang Ai-Wei Chen Chin-Jui Chang Bih-Yaw Shih Chen-Yuan Chen Department of Computer Science National Ping Tung University of Education Ping Tung Taiwan Department of Information Management Transworld University Yunlin Taiwan Doctoral Program in Management National Kaohsiung First University of Science and Technology Kaohsiung Taiwan

An improved mechanism called Scan First 3 Channels (SF3C) is developed to reduce the communicating frequency among devices and PAN Coordinator. The throughput and energy consumption are major performance indexes for it. Meanwhile, the beacon-enabled mode for broadcast transmissions in WPAN has higher flexibility than the non-beacon -enabled mode. In the research, a new analytic mode of the IEEE 802.15.4 beacon-enabled mode is developed to improve throughput. Furthermore, the MAC performance in the simple star topology is evaluated.

关键词： Binary phase shift keying Multiaccess communication Mobile communication Oils Microwave integrated circuits Zigbee Documentation

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Growth and characteristics of GaInN/GaInN multiple quantum well light-emitting diodes

Growth and characteristics of GaInN/GaInN multiple quantum w...

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作者： Lee, Wonseok Kim, Min-Ho Zhu, Di Noemaun, Ahmed N. Kim, Jong Kyu Schubert, E.F. Future Chips Constellation and Engineering Science Program Rensselaer Polytechnic Institute Troy NY 12180 United States Samsung LED Suwon 443-743 Korea Republic of Future Chips Constellation Department of Physics Applied Physics and Astronomy Rensselaer Polytechnic Institute Troy NY 12180 United States Future Chips Constellation Department of Electrical Computer and Systems Engineering Rensselaer Polytechnic Institute Troy NY 12180 United States Department of Materials Science and Engineering Pohang University of Science and Technology Pohang 790-784 Korea Republic of

We demonstrate GaInN multiple quantum well (MQW) light-emitting diodes (LEDs) having ternary GaInN quantum barriers (QBs) instead of conventional binary GaN QBs for a reduced polarization mismatch between QWs and QBs and an additional separate confinement of carriers to the MQW active region. In comparison with GaInN LEDs with conventional GaN QBs, the GaInN/GaInN LEDs show a reduced blueshift of the peak wavelength with increasing injection current and a reduced forward voltage. In addition, we investigate the density of pits emerging on top of the MQW layer that are correlated with V-defects and act as a path for the reverse leakage current. The GaInN/GaInN MQW structure has a lower pit density than the GaInN/GaN MQW structure as well as a lower reverse leakage current. Finally, the GaInN/GaInN MQW LEDs show higher light output power and external quantum efficiency at high injection currents compared to the conventional GaInN/GaN MQW LEDs. We attribute these results to the reduced polarization mismatch and the reduced lattice mismatch in the GaInN/GaInN MQW active region. © 2010 American Institute of Physics.

关键词： III-V semiconductors

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Support for flight trajectories and video capture: Initial results using a free open source flight simulator

Support for flight trajectories and video capture: Initial r...

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12th International Conference on Engineering, science, Construction, and Operations in Challenging Environments - Earth and Space 2010

作者： Durham, Jayson Mehrubeoglu, Mehrube McLauchlan, Lifford Carter, David McBee, Ross Capabilities Branch SPA WAR Systems Center - Pacific United States Dept. of Computing Sciences Engineering Technology Program Texas A and M University Corpus Christi TX United States Dept. of Electrical Engineering and Computer Science Texas A and M University Kingsville TX United States University of Texas Austin TX United States Regents School of Austin United States

ISBN: (纸本)9780784410967

Micro Aerial Vehicles (MAVs) and larger Unmanned Aerial Vehicles (UAVs) constitute a powerful tool for the modern warfighter and first responder. However, every developing technology must first be tested before being exported to the battlefield or hot spot to assure predictable behaviors. In today's digital age, computers give designers and testers unprecedented ability to quickly and easily test virtual models before physical prototypes are created and field tested. We have utilized emerging Free Open Source Software (FOSS) simulators and workbenches (e.g. FlightGear and AUV Workbench) to improve mission-driven MAV/UAV video and imagery capture and analysis capabilities. In this project, use of FlightGear to analyze flight trajectories and video capture capabilities of different UAVs is presented. FlightGear allows the free implementation of changeable flight dynamic models, weather, autopilot, GPS, and multiplayer to be included in the analysis of simulated flights. Another attractive aspect of FlightGear is its extensible and easy-to-modify implementation. Modifications are accomplished by changing or adding human readable XML files in the FlightGear subdirectories. In this effort, existing aerial vehicle models are incorporated into FlightGear to create flight trajectories and analyze video capture capabilities to determine the necessary toolset for analyzing imagery data to meet the mission needs. The limitations of the existing camera systems as well as effects of various flight parameters on mosaicking and georegistration are presented here. Sample analysis of the effect of aerial vehicle speed on the overlap of frames captured at the typical 30 frames/second frame rate, which provides a base for comparison of flight attributes, are demonstrated together with other parameters that affect mission performance. © 2010 ASCE.

关键词： Flight simulators

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A non-linear approach to solving linear algorithmic problems

A non-linear approach to solving linear algorithmic problems

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Frontiers in Education (FIE) Conference

作者： Orna Muller Bruria Haberman Software Engineering Department Teaching & Learning Center Ort Braude College of Engineering Karmiel Israel Computer Science Department Holon Institute of Technology Israel CS Academia & Industry program for talented high-school Davidson Institute of Science Education Weizmann Institute of Science Rehovot Israel

Solving algorithmic problems and implementing them in code is a major theme in introductory computer science courses. Problems related to string manipulation are common and of great importance in various domains. In the context of computer science education, solving algorithmic problems of this type may be very challenging for novices, even for the more competent students. Analysis of novice students' solutions to a specific class of problems dealing with string manipulation revealed that a widespread intuitive and non-linear approach was used to solve these problems, which led to cumbersome and erroneous solutions. On the other hand, a straightforward linear approach that leads to shorter and more elegant solutions is uncommon. Uncovering students' common and unsatisfactory approaches in problem solving have significant implications on instruction.

关键词： Problem-solving Taxonomy programming profession Algorithm design and analysis Syntactics

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Balancing collaboration and discipline in software development processes

Balancing collaboration and discipline in software developme...

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International Conference on Software Engineering (ICSE)

作者： Andrea Magalhaes Magdaleno NP2Tec-Research and Practice Group in Information Technology UNIRIO Brazil COPPE/PESC-System Engineering and Computer Science Program UFRJ Rio de Janeiro Rio de Janeiro Brazil

Neither traditional, agile or free/open software development models can be effective to all projects contexts. We claim that collaboration and discipline can be the driver to tailor software development processes to meet projects and organizations needs. This work proposes that process tailoring can be conducted through a context management approach.

关键词： Context Collaboration programming Software Social network services Organizations Context modeling

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