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2009 International Conference on Field-programmable Technology, FPT'09

作者： Cheung, Kit Schultz, Simon R. Leong, Philip H. W. Department of Computer Science and Engineering Chinese University of Hong Kong Hong Kong Department of Bioengineering Imperial College London United Kingdom Department of Electrical and Information Engineering University of Sydney Australia

ISBN: (纸本)9781424443772

An FPGA-based systolic architecture for the high speed simulation of spiking neural networks is presented. The design is an implementation of Izhikevich's neuron model and employs optimizations for the typical case where neuron activity is low. Since execution time required is related to the activity level, performance of the design can be improved by an order of magnitude. © 2009 IEEE.

关键词： Field programmable gate arrays (FPGA)

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Protocol for obtaining noise-immune absolute ellipsometric measurements with high spatial resolution

Protocol for obtaining noise-immune absolute ellipsometric m...

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Frontiers in Optics, FiO 2009

作者： Tripathi, Santosh Toussaint, Kimani C. Department of Electrical and Computer Engineering University of Illinois Urbana-Champaign IL 61820 United States Department of Mechanical Science and Engineering University of Illinois Urbana-Champaign IL 61820 United States Departments of Electrical and Computer Engineering and Bioengineering University of Illinois Urbana-Champaign IL 61820 United States

A protocol that utilizes Stokes parameters and inverse methods for obtaining noise immune absolute ellipsometric measurements with high spatial resolution is proposed. It is applicable for arbitrary scalar and vector ... 详细信息

ISBN: (纸本)9781557528780

关键词： Inverse problems

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Quantitative Fourier analysis of SHG images of porcine cornea

Quantitative Fourier analysis of SHG images of porcine corne...

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Frontiers in Optics, FiO 2009

作者： Rao, Raghu Ambekar Ramachandra Mehta, Monal R. Toussaint, Kimani C. Department of Electrical and Computer Engineering University of Illinois Urbana-Champaign IL 61820 United States Department of Mechanical Science and Engineering University of Illinois Urbana-Champaign IL 61820 United States Departments of Electrical and Computer Engineering and Bioengineering University of Illinois Urbana-Champaign IL 61820 United States

Fourier analysis is applied to cornea images obtained using second-harmonic generation microscopy. The orientation and maximum spatial frequency of collagen fibrils in selected regions of interest are determined. ... 详细信息

ISBN: (纸本)9781557528780

关键词： Fourier analysis

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Predicting cardiovascular disease from real-time electrocardiographic monitoring: An adaptive machine learning approach on a cell phone

Predicting cardiovascular disease from real-time electrocard...

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31st Annual International Conference of the IEEE engineering in Medicine and Biology Society: engineering the Future of Biomedicine, EMBC 2009

作者： Jin, Zhanpeng Sun, Yuwen Cheng, Allen C. Department of Electrical and Computer Engineering University of Pittsburgh Pittsburgh PA 15261 United States Depts. of Elec. and Computer Engineering Bioengineering Neurological Surgery and Comp. Science University of Pittsburgh Pittsburgh PA 15261 United States

ISBN: (纸本)9781424432967

To date, cardiovascular disease (CVD) is the leading cause of global death. The Electrocardiogram (ECG) is the most widely adopted clinical tool that measures the electrical activities of the heart from the body surface. However, heart rhythm irregularities cannot always be detected on a standard resting ECG machine, since they may not occur during an individual's recording session. Common Holter-based portable solutions that record ECG for up to 24 to 48 hours lack the capability to provide real-time feedback. In this research, we seek to establish a cell phone-based real-time monitoring technology for CVD, capable of performing continuous on-line ECG processing, generating a personalized cardiac health summary report in layman's language, automatically detecting and classifying abnormal CVD conditions, all in real time. Specifically, we developed an adaptive artificial neural network (ANN)-based machine learning technique, combining both an individual's cardiac characteristics and information from clinical ECG databases, to train the cell phone to learn to adapt to its user's physiological conditions to achieve better ECG feature extraction and more accurate CVD classification on cell phones. ©2009 IEEE.

关键词： Electrocardiograms

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Continuous-flow deformability-based sorting of malaria-infected red blood cells

Continuous-flow deformability-based sorting of malaria-infec...

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13th International Conference on Miniaturized Systems for Chemistry and Life sciences, MicroTAS 2009

作者： Bow, Hansen Hou, Han Wei Goldfless, Stephen Abgrall, Patrick Tan, Kevin Niles, Jacquin Lim, Chwee Teck Han, Jongyoon Department of Electrical Engineering and Computer Science MIT United States Department of Biological Engineering MIT United States Singapore Singapore Department of Microbiology National University of Singapore Singapore Singapore Division of Bioengineering National University of Singapore Singapore Singapore

ISBN: (纸本)9780979806421

Change in cell stiffness is a characteristic of several blood cell diseases, such as sickle cell anemia1, malaria2, and leukemia3. In humans, the spleen acts like a filter to remove these more rigid cells by pushing blood through slits between endothelial cells and removing cells that cannot pass. In this work, we create a microfluidic device that mimics the architecture of the spleen to achieve continuous-flow fractionation of cells based on their rigidity. We demonstrate successful operation of this device by separating malaria-infected from normal, uninfected red blood cells (RBCs). Applications include disease diagnosis and sample preparation for downstream analysis. © 2009 CBMS.

关键词： Endothelial cells

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Effect of nitrogen concentration on nanodiamond film characteristics for electrode application

Effect of nitrogen concentration on nanodiamond film charact...

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作者： Raina, Supil LeQuan, X.C. Kang, W.P. Davidson, J.L. Interdisciplinary Program in Materials Science Vanderbilt University Nashville TN 37235 United States Department of Electrical Engineering and Computer Science Vanderbilt University Nashville TN 37235 United States

ISBN: (纸本)9781607681137

Microwave plasma chemical vapor deposition was used to fabricate nanodiamond films. Nitrogen incorporation was achieved by the introduction of N2 gas along with H2 and CH4 gases in the plasma. SEM studies revealed a change in the microstructure with increase in the N2 flow rate, transitioning from a 'ridge'-like surface morphology to a more 'cauliflower'-like structure. X-ray photoelectron spectroscopy (XPS) analysis showed a general decrease in the sp3 hybridized carbon content while the sp hybridized carbon content increased with N2 flow rate (up to 28.7%) after which it declines. Deconvolution of the C1s XPS spectra indicates incorporation of nitrogen and existence of carbon-nitrogen bonding. Raman spectroscopy shows diamond peak at 1332 cm-1 and the graphite peak, which increases in intensity and shifts towards lower wave number with increase in the N2 flow rate. A diffuse band at 1140 cm -1 indicates presence of a nanocrystalline phase in the films. ©The Electrochemical Society.

关键词： Nitrogen

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Enhancements to a retention program for women engineering technology students by the addition of a social support network and community building activities

Enhancements to a retention program for women engineering te...

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2009 ASEE Annual Conference and Exposition

作者： Dell, Elizabeth Christman, Jeanne Wolcott, Teresa Valentine, Maureen Department of Manufacturing and Mechanical Engineering Technology Rochester Institute of Technology United States Department of Electrical Computer and Telecommunications Engineering Technology Rochester Institute of Technology United States Department of Computer Engineering Technology Program WIT in the Civil Engineering Technology program RIT South Africa College of Applied Science and Technology Rochester Institute of Technology United States

This paper describes a low-cost, successful program to help retain female engineering Technology students with the ultimate goal of increasing the number of female graduates of our engineering Technology programs. This program was started in 2003. The programming initially focused on academic support in the form of tutoring, formation of study groups and reimbursement for academic laboratory kits. This program did improve retention, but a survey of our students found that they also desired social support and opportunities to serve the community. Since the addition of programming involving social support and community building, retention of women students in the engineering Technology programs has improved by an average of 6% per year. In addition to improved retention, the number of students receiving a D, F or Withdrawing from the core first- and second-year courses in these programs has dropped by over 75%. © American Society for engineering Education, 2009.

关键词： Students

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Ontology engineering

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Nature Biotechnology 2010年第2期28卷 128-130页

作者： Alterovitz, Gil Xiang, Michael Hill, David P. Lomax, Jane Liu, Jonathan Cherkassky, Michael Dreyfuss, Jonathan Mungall, Chris Harris, Midori A. Dolan, Mary E. Blake, Judith A. Ramoni, Marco F. Children's Hospital Informatics Program Harvard-MIT Division of Health Sciences and Technology Harvard Medical School Boston MA United States Partners Healthcare Center for Personalized Genetic Medicine Boston MA United States Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA United States Jackson Laboratory Bar Harbor ME United States EMBL-EBI Wellcome Trust Genome Campus Hinxton United Kingdom Department of Biology Massachusetts Institute of Technology Cambridge MA United States Lawrence Berkeley National Laboratory Berkeley CA United States

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Micro-fabricated fluorescence-activated cell sorter

Micro-fabricated fluorescence-activated cell sorter

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31st Annual International Conference of the IEEE engineering in Medicine and Biology Society: engineering the Future of Biomedicine, EMBC 2009

作者： Cho, Sung Hwan Chen, Chun H. Tsai, Frank S. Lo, Yu-Hwa Materials Science and Engineering Program University of California at San Diego San Diego CA 92093 United States Department of Bioengineering University of California at San Diego San Diego CA 92093 United States Electrical and Computer Engineering Department University of California at San Diego San Diego CA 92093 United States

ISBN: (纸本)9781424432967

We demonstrate a high sensitivity, high throughput microfabricated cell sorting device with the integrated piezoelectric actuator and optofluidic waveguide on a chip. For automated sorting, field-programmable-gate-array (FPGA) embedded real time control loop system is built. The sorting is performed under high flow rate (~10 cm/sec), and the sorting system can achieve a high throughput (> 1kHz) with high purity. Moreover, to enhance its sensitivity, Teflon AF coated liquid core waveguide (LCW) structure is demonstrated. Teflon AF has a lower refractive index (n=1.31) than water (n=1.33) and forms the cladding layer of the LCW. Incident light is confined and guided along the Teflon AF coated fluidic channel, and interact with samples flowing along the same channel. This enables flexible device design and gives high sensitivity to the fluorescence detection system. The preliminary results demonstrate sorting fluorescent beads at a sorting efficiency of ~70% with no false sorting. ©2009 IEEE.

关键词： Field programmable gate arrays (FPGA)

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Preparing computer engineers for a global economy: A study on effective collaboration practices in global student teams

Preparing computer engineers for a global economy: A study o...

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39th Annual Frontiers in Education Conference: Imagining and engineering Future CSET Education, FIE 2009

作者： Doboli, Alex Doboli, Simona Currie, Edward State University of New York at Stony Brook Department of Electrical and Computer Engineering Stony Brook NY 11794-2350 United States Computer Engineering Program Hofstra University Department of Computer Science Hempstead NY United States Resonance Publications Inc. United States

ISBN: (纸本)9781424447152

This paper discusses our ongoing efforts on developing, and conducting, senior design projects that involve undergraduate students working together on entrepreneurial, innovative projects. The students are from multiple universities, some of which are abroad. The goal is to emulate the main elements of global engineering teams that develop complex, multidisciplinary designs while targeting market-related constraints, such as price, reliability, size and ease-of-use. This paper discusses the goals and organization of the global student teams, and presents our experience in working with such teams. © 2009 IEEE.

关键词： Students

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