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作者： Anand, Sarabjot Singh Bunescu, Razvan Carvcdho, Vitor Chomicki, Jan Conitzer, Vincent Cox, Michael T. Dignum, Virginia Dodds, Zachary Dredze, Mark Furcy, David Gabrilovich, Evgeniy Göker, Mehmet H. Guesgen, Hans Hirsh, Haym Jannach, Dietmar Junker, Ulrich Ketter, Wolfgang Kobsa, Alfred Koenig, Sven Lau, Tessa Lewis, Lundy Matson, Eric Metzler, Ted Mihalcea, Rada Mobasher, Bamshad Pineau, Joelle Poupart, Pascal Raja, Anita Ruml, Wheeler Sadeh, Norman Shani, Guy Shapiro, Daniel Smith, Trey Taylor, Matthew E. Wagstaff, Kiri Walsh, William Zhou, Rong Department of Computer Science University of Warwick United Kingdom School of Electrical Engineering and Computer Science Ohio University United States Microsoft Live Labs United States computer science and engineering University at Buffalo United States Computer science and economics Duke University United States Intelligent Computing group of BBN Technologies Utrecht University Netherlands Department of Computer science Harvey Mudd College United States University of Pennsylvania United States University of Wisconsin United States Yahoo Research PricewaterhouseCoopers Center for Advanced Research United States Department of Computer science School of Engineering and Advanced Technology Massey University New Zealand Departent of Computer science Rutgers University United States Department of Computer Science Dortmund University of Technology. Germany ILOG Rotterdam School of Management Erasmus University Netherlands Donald Bren School of Information and Computer Sciences University of California Irvine United States Depatrment of Computer science University of Southern California United States IBM Almaden Research Center United States Department of Computer Information Technology Southern New Hampshire University United States Computer and Information Technology Program College of Technology Purdue University United States Hughes Program for Religion and Science Dialogue Oklahoma City University United States Department of Computer Science and Engineering University of North Texas United States School of Computing DePaul University United States Department of Computer Science McGill University Canada School of Computer Science University of Waterloo Canada Department of Software and Information Systems University of North Carolina Charlotte United States University of New Hampshire United States Microsoft Research Institute for the Study of Learning and Expertise Applied Reactivity Inc. United States NASA Ames Research Center Carnegie Mellon University West

AAAI was pleased to present the AAAI-08 Workshop program, held Sunday and Monday, July 13-14, in Chicago, Illinois, USA. The program included the following 15 workshops: Advancements in POMDP Solvers;AI Education Workshop Colloquium;Coordination, Organizations, Institutions, and Norms in Agent Systems, Enhanced Messaging;Human Implications of Human-Robot Interaction;Intelligent Techniques for Web Personalization and Recommender Systems;Metareasoning: Thinking about Thinking;Multidisciplinary Workshop on Advances in Preference Handling;Search in Artificial Intelligence and Robotics;Spatial and Temporal Reasoning;Trading Agent Design and Analysis;Transfer Learning for Complex Tasks;What Went Wrong and Why: Lessons from AI Research and Applications;and Wikipedia and Artificial Intelligence: An Evolving Synergy. Copyright © 2009, Association for the Advancement of Artificial Intelligence. All rights reserved.

关键词： Human robot interaction

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Center for resources in general education (CIVIS): Towards student success in general and STEM education

Center for resources in general education (CIVIS): Towards s...

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

作者： O'Neill-Carrillo, Efraín Collins, Dana L. Garriga, Juan López MacChiavelli, Raúl Cruz, José A. University of Puerto Rico-Mayagüez Puerto Rico Electrical and Computer Engineering Department Puerto Rico CIVIS: Center for Resources in General Education UPRM United States Department of Humanities United States Department of Chemistry Puerto Rico Science on Wheels Program UPRM Puerto Rico College of Agricultural UPRM Puerto Rico College of Business Administration UPRM Puerto Rico

ISBN: (纸本)9781424447152

Researchers at the University of Puerto Rico-Mayaguez (UPRM) have conducted an analysis of student needs and have identified strategies to respond to the General and STEM education challenges at UPRM. A Center for Resources in General Education (CIVIS) has been established to deal with these challenges by providing students and professors a new, integrated perspective (focused on General and STEM skills) of the curriculum, and by enabling student academic success through various learning opportunities. CIVIS brings together faculty from Agricultural sciences, Arts and sciences, Business Administration and engineering in order to develop activities that provide interdisciplinary and global perspectives to UPRM's General Education. The Center focuses on two main activities: 1) Paths to Student Success, and 2) Sustainable Context with the use of student learning modules tying the activities together. AU initiatives of the Center are supported by a recent grant from the U.S. department of Education, and are based on the success of initiatives that have been previously tested at a smaller scale at UPRM. CIVIS provides resources to expand the reach of those initiatives and will ensure sustainability by the institutionalization of those initiatives. ©2009 IEEE.

关键词： Students

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Neural prosthetic systems: Current problems and future directions

Neural prosthetic systems: Current problems and future direc...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Cindy A. Chestek John P. Cunningham Vikash Gilja Paul Nuyujukian Stephen I. Ryu Krishna V. Shenoy Department of Electrical Engineering University of Stanford Stanford CA USA Department of Computer Science University of Stanford Stanford CA USA Johns Hopkins University USA Department of Neurosurgery University of Stanford Stanford CA USA Department of Neurosurgery Palo Alto Medical Foundation USA Department of Electrical Engineering Bioengineering Department of Electrical University of Stanford Stanford CA USA

By decoding neural activity into useful behavioral commands, neural prosthetic systems seek to improve the lives of severely disabled human patients. Motor decoding algorithms, which map neural spiking data to control parameters of a device such as a prosthetic arm, have received particular attention in the literature. Here, we highlight several outstanding problems that exist in most current approaches to decode algorithm design. These include two problems that we argue will unlikely result in further dramatic increases in performance, specifically spike sorting and spiking models. We also discuss three issues that have been less examined in the literature, and we argue that addressing these issues may result in dramatic future increases in performance. These include: non-stationarity of recorded waveforms, limitations of a linear mappings between neural activity and movement kinematics, and the low signal to noise ratio of the neural data. We demonstrate these problems with data from 39 experimental sessions with a non-human primate performing reaches and with recent literature. In all, this study suggests that research in cortically-controlled prosthetic systems may require reprioritization to achieve performance that is acceptable for a clinically viable human system.

关键词： Prosthetics Signal processing algorithms Decoding Neural prosthesis Humans Sorting Biomedical signal processing Voltage control Animals Signal mapping

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DNAjig: A New Approach for Building DNA Nanostructures

DNAjig: A New Approach for Building DNA Nanostructures

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IEEE International Conference on Bioinformatics and Biomedicine (BIBM)

作者： Md. Muksitul Haque Ananth Kalyanaraman Amit Dhingra Nehal Abu-Lail Kaori Graybeal School of Electrical Engineering and Computer Science Washington State University Pullman WA USA Department Horticulture & Landscape Architecture Washington State University Pullman WA USA Department Chemical Engineering & Bioengineering Washington State University Pullman WA USA

DNA self-assembly is an emerging technique in DNA nanotechnology that holds promise for high impact applications such as in the synthesis of DNA-based nanodevices in medicine, robotics and electronics. Recent advancements in technologies and ideas have spurred new growth in the area. The most significant challenge faced by designers in the field is the lack of algorithmic and software options to aid in the design process, and as a result the scope of synthesis has been restricted to modeling a limited set of shapes in 2D. In this paper, we propose a new design methodology called DNAjig to build DNA nanostructures. The highlights of this method are as follows: i) The construction procedure is based on a novel application of space-filling curves to model the shape of an arbitrary user-specified 2D or 3D object. ii) The method results in a simple, yet recursively constructable design layout that is inherently interlocked. iii) Almost all steps within the proposed design procedure can be automated and we present algorithms and a base-version implementation for the same. Wetlab validation showing the results of self-assembly of our first batch of computer generated 2D models is presented.

关键词： DNA Nanostructures Algorithm design and analysis Self-assembly Shape Nanotechnology Application software Medical robotics Software algorithms Process design

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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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Dynamic imaging of speech and swallowing with MRI

Dynamic imaging of speech and swallowing with MRI

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Bradley P. Sutton Charles Conway Youkyung Bae Cornelius Brinegar Zhi-Pei Liang David P. Kuehn Bioengineering Department University of Illinois Urbana-Champaign Urbana IL USA Speech and Hearing Science Department University of Illinois Urbana-Champaign Urbana IL USA Department of Electrical and Computer Engineering University of Illinois Urbana-Champaign Urbana IL USA

Dynamic imaging with MRI holds great promise for visualizing soft tissue structures in the oropharyngeal region during speech and swallowing studies. However, MRI suffers from historically slow acquisition speed and sensitivity to significant magnetic susceptibility differences in this region. In this work, we describe our efforts in creating high temporal resolution, serial acquisitions of the muscles of the oropharyngeal region. We describe our imaging approach that leads to acquisition rates of up to 21 frames per second. Additionally, we compare the serial acquisition scheme to gated acquisitions that suffer from temporal blur due to limited repeatability of the dynamic action.

关键词： Speech Magnetic resonance imaging Visualization Biological tissues Muscles Magnetic susceptibility Tongue High-resolution imaging Motion pictures Spatial resolution

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Dynamics of SU(1,1) coherent states for the damped harmonic oscillator

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Physical Review A 2009年第5期79卷 054103-054103页

作者： Jeong Ryeol Choi Kyu Hwang Yeon School of Electrical Engineering and Computer Science Kyungpook National University 1370 Sankyuk-dong Buk-gu Daegu 702–701 Republic of Korea Department of Physics and BK21 Physics Program College of Natural Science Chungbuk National University Cheongju Chungbuk 361-763 Republic of Korea

Gerry, Ma, and Vrscay [Phys. Rev. A 39, 668 (1989)] studied the time evolution of SU(1,1) coherent states for the damped harmonic oscillator by introducing the Kanai-Caldirola Hamiltonian. The purposes of this Brief Report are to demonstrate that there are somewhat serious errors on their results and to correct them. Most of the figures given in their work are reproduced with correction in order to facilitate our explanation of results.

关键词： correction explanation results damped harmonic oscillator ANNIHILATION OPERATORS dynamics

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FABRICATION OF BISMUTH NANOWIRE DEVICES USING FOCUSED ION BEAM MILLING

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AIP Conference Proceedings 2009年第1期1151卷 48-51页

作者： H. H. Cheng M. M. Alkaisi S. E. Wu C. P. Liu aCentre for Microscopy and Microanalysis Australian Institute for Bioengineering and Nanotechnology University of Queensland Queensland 4072 Australia bThe MacDiarmid Institute for Advanced Materials and Nanotechnology Department of Electrical and Computer Engineering University of Canterbury Christchurch 8140 New Zealand cDepartment of Materials Science & Engineering National Cheng Kung University Tainan 70101 Taiwan

In this work, a focused ion beam (FIB) milling process has been developed to fabricate 50 nm Bi nanowire and transistor structures using FEI‐200 dual beam FIB system. For the fabrication, 50 nm bismuth film was thermally evaporated through EBL patterned PMMA windows onto SiO2 substrates with pre‐defined contact pads. Bi nanowire widths ranging from 30 nm to 100 nm have been successfully fabricated by milling out unwanted areas using 30 KeV Ga+ ion beam. A single‐pixel‐line ion beam blanking technique has been utilised to fabricate Bi nanowire as small as 30 nm in diameter and few micrometers long. In order to form good ohmic contacts for sub 50 nm bismuth nanowires, a drill‐and‐fill process has been developed using FIB to sputter away the surface oxide of bismuth after the in‐situ platinum nanowire contacts deposition. To our knowledge, this is the first time a focused ion beam process has been used to fabricate bismuth nanowire. The fabricated Bi nanowires were electrically characterised using a semiconductor analyser that showed good ohmic contact to the electrodes. In this paper, the fabrication experiments and the characterisation results for Bi nanowires as small as 50 nm in diameter are presented. Several FIB issues involved in Bi device making and ohmic contacts to Bi nanowires will also be discussed.

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Gratings on porous silicon structures for sensing applications

Gratings on porous silicon structures for sensing applicatio...

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Conference on Lasers and Electro-Optics, CLEO 2009

作者： Liscidini, M. Wei, X. Kang, C. Rong, G. Retterer, S.T. Patrini, M. Sipe, J.E. Weiss, S.M. Department of Physics University of Toronto 60 St. George St Toronto M5S 1A7 ON Canada Department of Electrical Engineering and Computer Science Vanderbilt University Nashville TN 37235 United States Interdisciplinary Graduate Program in Materials Science Vanderbilt University Nashville TN 37235 United States Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge TN 37831 United States CNISM and Dipartimento di Fisica 'A. Volta' Università degli Studi di Pavia via Bassi 6 27100 Pavia Italy

We investigate the use of gratings on porous silicon structures for sensing applications. Examples of two classes of systems are studied: grating-coupled waveguide biosensors, and diffraction-based biosensors. © ... 详细信息

ISBN: (纸本)9781557528698

关键词： Biosensors

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Assembly of CdSeS(ZnS) quantum dots in langmuir films with tertiary alkyl phosphine ligands

Assembly of CdSeS(ZnS) quantum dots in langmuir films with t...

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Nanotechnology - General - 214th ECS Meeting/PRiME 2008

作者： Giles, Alexander J. Pagan, J. Patel, K. Stokes, E.B. Nanoscale Science Graduate Program Department of Chemistry University of North Carolina at Charlotte 9201 University City Boulevard Charlotte NC 28223 United States Dot Metrics Technologies Charlotte Research Institute University of North Carolina at Charlotte 9201 University City Boulevard Charlotte NC 28223 United States Department of Electrical and Computer Engineering University of North Carolina at Charlotte 9201 University City Boulevard Charlotte NC 28223 United States Center for Optoelectronics and Optical Communications University of North Carolina al Charlotte 9201 University City Boulevard Charlotte NC 28223 United States

ISBN: (纸本)9781615672998

The focus of this paper is to describe studies on pre-prepared hydrophobic CdSeS(ZnS) quantum dots (QDs) at the air-water interface. Surface pressure-area (π-A) isotherms were extensively studied using QDs capped with either trioclylphosphine oxide or triethylphosphine oxide. The role of these two different ligands on monolayer behavior and thin film quality has been investigated using the Langmuir-Blodgett (LB) technique. The thin films were characterized by scanning electron microscopy (SEM), fluorescence spectroscopy, and UV-vis spectroscopy. ©The Electrochemical Society.

关键词： Cadmium compounds

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