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2009 ASEE Annual Conference and Exposition

作者： Anagnostopoulos, Georgios Georgiopoulos, Michael Kepuska, Veton Stanley, Kenneth Morrison-Shetlar, Alison Lancey, Pat Krist, Paula Crouse, Tace Electrical and Computer Engineering Department Florida Institute of Technology Melbourne FL United States AMALTHEA REU Program United States University of Central Florida United States School of EECS School of Electrical Engineering and Computer Science University of Central Florida United States Department of Biology University of Central Florida United States School of Leadership and Education Sciences University of San Diego United States

The AMALTHEA REU program is a 10-week, summer research experience for science or engineering undergraduate students funded by the National Science Foundation since 2007 and featuring Machine Learning as its intellectual focus. Moreover, it is a joint effort of two collaborating universities in Central Florida, namely Florida Institute of technology in Melbourne and University of Central Florida in Orlando. Organizing, implementing and directing REU Sites is typically perceived as a demanding effort;while offering unique advantages, operating collaborative sites may impose an additional layer of challenges. In this paper our intention is to present the objectives of our program, its unique characteristics, and the structure and organization of our collaborative site. Furthermore, we would like to give an informative account of our activities across the various aspects of the program, such as marketing of the experience, recruiting of student participants, the summer experience itself and our dissemination efforts. Finally, we report on our outcomes accomplished so far, which include research products and evaluation results. While our program is only entering into its third year of operation, we do hope that, by sharing our experiences and promising strategies to date, we will encourage and aid prospective REU Site directors to successfully plan for and operate collaborative sites. © American Society for engineering Education, 2009.

关键词： Students

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Serendipitous discoveries in microarray analysis

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BMC Bioinformatics 2010年第4期11卷 1-1页

作者： Sally R Ellingson Charles A Phillips Michael A Langston Randy Glenn Douglas Swanson Thomas Ha Daniel Goldowitz Genome Science and Technology Program University of Tennessee Knoxville TN 37996 USA Department of Electrical Engineering and Computer Science University of Tennessee Knoxville TN 37996 USA Centre for Molecular Medicine and Therapeutics University of British Columbia Vancouver BC V5Z 4H4 Canada

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Quantum Systems Connected by a Time-Dependent Canonical Transformation

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Communications in Theoretical Physics 2009年第9期52卷 416-420页

作者： Kyu Hwang Yeon Jeong Ryeol Choi ZHANG Shou BK21 Physics Program and Department of Physics College of Natural Science Chungbuk National University Cheongju Chungbuk 361-763 Korea School of Electrical Engineering and Computer Science Kyungpook National University 1370 Sankyuk-dong Buk-gu Daegu 702-701 Korea Center for the Condensed-Matter Science and Technology Harbin Institute of Technology Harbin 150001 China Department of Physics College of Science Yanbinn University Yanji 133002 China

We study both classical and quantum relation between two Hamiltonian systems which are mutually connected by time-dependent canonical transformation. One is ordinary conservative system and the other is timedependent Hamiltonian system. The quantum unitary operator relevant to classical canonical transformation between the two systems are obtained through rigorous evaluation. With the aid of the unitary operator, we have derived quantum states of the time-dependent Hamiltonian system through transforming the quantum states of the conservative system. The invariant operators of the two systems are presented and the relation between them are addressed. We showed that there exist numerous Hamiltonians, which gives the same classical equation of motion. Though it is impossible to distinguish the systems described by these Hamiltonians within the realm of classical mechanics, they can be distinguishable quantum mechanically.

关键词： canonical transformation innumerable kind of Hamiltonians canonical quantization invariant operator unitary transformation

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Achievable Capacity of a Spectrum Sharing System over Hyper Fading Channels

Achievable Capacity of a Spectrum Sharing System over Hyper ...

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GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference

作者： Sabit Ekin Ferkan Yilmaz Hasari Celebi Khalid A. Qaraqe Mohamed-Slim Alouini Erchin Serpedin Department of Electrical and Computer Engineering Texas A and M University Qatar Doha Qatar Electrical Engineering Program King Abdullah University for Science and Technology Thuwal Saudi Arabia

Cognitive radio with spectrum sharing feature is a promising technique to address the spectrum under-utilization problem in dynamically changing environments. In this paper, achievable capacity gain of spectrum sharing systems over dynamic fading environments is studied. For the analysis, a theoretical fading model called hyper fading model that is suitable to the dynamic nature of cognitive radio channel is proposed. Closed-form expression of probability density function (PDF) and cumulative density function (CDF) of the signal-to-noise ratio (SNR) for secondary users in spectrum sharing systems are derived. In addition, the capacity gains achievable with spectrum sharing systems in high and low power regions are obtained. Numerical simulations are performed to study the effects of different fading figures, average powers, interference temperature, and number of secondary users on the achievable capacity.

关键词： Fading Power system modeling Rayleigh channels Temperature Cognitive radio Interference constraints Random variables computer science education Educational programs Systems engineering education

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A highly modular, wireless, implantable interface to the cortex

A highly modular, wireless, implantable interface to the cor...

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International IEEE/EMBS Conference on Neural engineering, CNE

作者： Faisal T. Abu-Nimeh Awais Kamboh Mehdi Aghagolzadeh Uei-Ming Jow Andrew Mason Maysam Ghovanloo Karim Oweiss Dept. of Electrical and Computer Engineering Department of Electrical and Computer Engineering Michigan State University East Lansing MI USA School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA USA Neuroscience Program Michigan State University East Lansing MI USA

The development of advanced neuroprosthetic systems and brain-machine interfaces for high-capacity, real-time, bi-directional communication with the nervous system is a major challenge to the emerging neural engineering discipline. In this paper, we summarize our first preliminary report on the design of a highly modular, wireless, adaptive, implantable large-scale interface to the cortex designed exclusively to permit faithful transmission of neural activity from high-density microelectrode array recordings to the outside world. The system is expected to augment the space of experimental design needed to improve our understanding of the nervous system functionality in freely behaving subjects interacting naturally with their surroundings. It will further accelerate the deployment of viable brain machine interface technology in clinical applications.

关键词： Nervous system Space technology Neural prosthesis Real time systems Bidirectional control Neural engineering Large-scale systems Microelectrodes Adaptive arrays Design for experiments

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Performance of H.264 in Real Time Optimization

Performance of H.264 in Real Time Optimization

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International Conference on computer technology and Development (ICCTD)

作者： Faizul Hadi Bin Mohamad Jamil Razak Mohd Ali Lee Terence Daim Jerome Khairul Anuar Mohamad Ahmad Razani Haron Computer Engineering Program School of Engineering and Information Technology Universiti Malaysia Sabah UMS Kota Kinabalu Sabah Malaysia Electrical and Electronic Engineering Program School of Engineering and Information Technology Universiti Malaysia Sabah UMS Kota Kinabalu Sabah Malaysia

MPEG-2, H.263 and MPEG-4 are some example of video codec series used around the world. Different type video codec bring a different compression and quality values. h.264 /mpeg-4 part 10 or AVC (advance video coding) is the latest video codec/coding standard developed by ITU-T Video Coding Expert Group (VCEG) and ISO/IEC Moving Picture Experts Group (MPEG). It produces more straightforward and simple video coding design, with enhanced compression performance, and a high quality video. Original raw video (uncompressed video) require large and huge storage and it is important to compress the video data so it can be useful storage and transmission purpose. Good codec design will bring a higher quality of the video and the higher compression ratio. The purpose of this study is to optimize the current H.264 encoder for a more satisfying video quality. The image's peak signal noise ratio (PSNR) result obtained from both original H.264 and optimized H.264 video coding, together with its sizes is used as a comparison for the performance.

关键词： Video compression Video coding Video codecs Transform coding MPEG 4 Standard IEC standards ISO standards Image coding PSNR Automatic voltage control

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A novel anti-collision algorithm for high-density RFID tags

A novel anti-collision algorithm for high-density RFID tags

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International Conference on electrical engineering/Electronics, computer, Telecommunications and Information technology, ECTI-CON

作者： Sarawut Makwimanloy Piya Kovintavewat Urachada Ketprom Charturong Tantibundhit Electrical and Computer Engineering Department Thammasat University Thailand RFID Technology and Applications Research Unit Nakhon Pathom Rajabhat University Nakhon Pathom Thailand RFID Program National Electronics and Computer Technology Center Thailand

In a radio frequency identification (RFID) system, when more than one tag communicates with a reader at the same time, a collision will occur resulting in the failure of that communication. Many anti-collision algorithms, such as binary tree (BT), FSA, and DFSA have been used in ISO and EPC standards to prevent such a collision. This paper develops a new anti-collision algorithm based on the BT and the DFSA algorithms. Specifically, all tags are divided into many groups using the DSFA algorithm. Then, the tags in each group are identified using the BT algorithm. Results indicate that the proposed algorithm performs better than the existing ones in terms of the number of used time slots (the less the used time slot, the faster the algorithm).

关键词： RFID tags Radiofrequency identification Partitioning algorithms Binary trees ISO standards Application software Radio frequency Access control Animals Logistics

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Comparison of threshold selection methods for microarray gene co-expression matrices

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BMC Research Notes 2009年第1期2卷 1-6页

作者： Borate, Bhavesh Chesler, Elissa Langston, Michael Saxton, Arnold Voy, Brynn Genome Science and Technology Program University of Tennessee Knoxville TN United States Department of Electrical Engineering and Computer Science University of Tennessee Knoxville TN United States Oak Ridge National Laboratory Systems Genetics Group Biosciences Division Oak Ridge TN United States Department of Animal Science University of Tennessee Knoxville TN United States

Background. Network and clustering analyses of microarray co-expression correlation data often require application of a threshold to discard small correlations, thus reducing computational demands and decreasing the number of uninformative correlations. This study investigated threshold selection in the context of combinatorial network analysis of transcriptome data. Findings. Six conceptually diverse methods - based on number of maximal cliques, correlation of control spots with expressed genes, top 1% of correlations, spectral graph clustering, Bonferroni correction of p-values, and statistical power - were used to estimate a correlation threshold for three time-series microarray datasets. The validity of thresholds was tested by comparison to thresholds derived from Gene Ontology information. Stability and reliability of the best methods were evaluated with block bootstrapping. Two threshold methods, number of maximal cliques and spectral graph, used information in the correlation matrix structure and performed well in terms of stability. Comparison to Gene Ontology found thresholds from number of maximal cliques extracted from a co-expression matrix were the most biologically valid. Approaches to improve both methods were suggested. Conclusion. Threshold selection approaches based on network structure of gene relationships gave thresholds with greater relevance to curated biological relationships than approaches based on statistical pair-wise relationships. © 2009 Saxton et al;licensee BioMed Central Ltd.

关键词： Spectral Cluster Maximal Clique Threshold Estimate Biological Relationship Spectral Graph

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A Game-Theoretic Framework for Intra-ONU Scheduling in Integrated EPON/WiMAX Networks

A Game-Theoretic Framework for Intra-ONU Scheduling in Integ...

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GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference

作者： Hui-Tang Lin Ying-You Lin Wang-Rong Chang Song-Ming Chen Department of Electrical Engineering National Cheng Kung University Taiwan Institute of Computer and Communication Engineering National Cheng Kung University Taiwan ICT-Enabled Healthcare Program Industrial Technology and Research Institute Taiwan

An integrated EPON/WiMAX network has been an attractive attention due to its features of achieving stable backhaul transmissions to WiMAX users and reducing the expenditure of network deployment. In implementing such a network, realizing a scheduling mechanism capable of sharing the available bandwidth between the heterogeneous Ethernet and WiMAX traffic in an effective manner is problematic. In the present study, this problem is addressed by using a game-theoretic-based scheme comprising a bankruptcy game and a bargaining game to perform an intra-ONU scheduling function at each ONU within the network. In the proposed approach, each ONU distributes the total amount of bandwidth allocated by the OLT between the Ethernet and WiMAX traffic buffers in accordance with the results of the bankruptcy game. By applying bargaining games, the allocated bandwidth is then further distributed to the different traffic classes within the Ethernet or WiMAX traffic in accordance with their QoS requirements. The simulation results confirm the validity and effectiveness of the proposed approach.

关键词： EPON WiMAX Traffic control Telecommunication traffic Ethernet networks Bandwidth Optical network units Job shop scheduling Processor scheduling Time division multiplexing

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Probabilistic structure from sound

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Advanced Robotics 2009年第12-13期23卷 1687-1702页

作者： Wang, Chieh-Chih Lin, Chi-Hao Hu, Jwu-Sheng Department of Computer Science and Information Engineering Graduate Institute of Networking and Multimedia National Taiwan University Taipei 10617 Taiwan Intelligent Robotics Program of Industrial Technology Research Institute Department of Electrical and Control Engineering National Chiao Tung University HsinChu 310 Taiwan

Auditory perception is one of the most important functions for robotics applications. Microphone arrays are widely used for auditory perception in which the spatial structure of microphones is usually known. In practice, microphone array calibration can be tedious and other devices or means are required. The structure from sound (SFS) approach addresses the problem of simultaneously localizing a set of microphones and a set of acoustic events that provides a great flexibility to calibrate different setups of microphone arrays. However, the existing method does not take measurement uncertainty into account and does not provide uncertainty estimates of the SFS results. In this paper, we propose a probabilistic structure from sound (PSFS) approach using the unscented transform in which the uncertainties of the PSFS results are also available. In addition, a probabilistic sound source localization approach using the PSFS results is provided to improve sound source localization accuracy. The ample results of simulation and experiments using low-cost, off-the-shelf microphones demonstrate the feasibility and performance of the proposed PSFS approach. © 2009 VSP.

关键词： Microphone array

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