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IEEE Conference on Avionics Fiber-Optics and Photonics, AVFOP

作者： Alan X. Wang Ray T. Chen Donglei Fan Che-Yun-Lin Xiaobin Xu Lei Wang School of Electrical Engineering and Computer Science Oregon State University Corvallis OR USA Microelectronic Research Center University of Texas Austin USA Department of Mechanical Engineering Materials Science and Engineering Program University of Texas Austin USA Microelectronic Research Center University of Texas at Austin Materials Science and Engineering Program University of Texas Austin USA

We investigated ultra-efficient nano-photonic modulators based on silicon photonic crystal slot waveguides infiltrated with electro-optic polymers. The integration of Si 3 N 4 guided mode resonance grating with plasm... 详细信息

关键词： Modulation Plastics Optical waveguides Nanotubes Photonic crystals Gratings Silicon compounds

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Modeling of Visuospatial Perspectives Processing and Modulation of the Fronto-Parietal Network Activity during Action Imitation

Modeling of Visuospatial Perspectives Processing and Modulat...

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

作者： Hyuk Oh Rodolphe J. Gentili James A. Reggia José L.Contreras-Vidal Neuroscience and Cognitive Science Program University of Maryland College Park MD 20742 USA Department of Kinesiology the Maryland Robotics Center and the Neuroscience and Cognitive Science Program University of Maryland College Park MD 20742 USA Department of Computer Science and the University of Maryland Institute for Advanced Computer Studies University of Maryland College Park MD 20742 USA Department of Electrical and Computer Engineering University of Houston Houston TX 77004 USA

ISBN: (纸本)9781424441198

It has been suggested that the human mirror neuron system (MNS) plays a critical role in action observation and imitation. However, the transformation of perspective between the observed (allocentric) and the imitated (egocentric) actions has received little attention. We expand a previously proposed biologically plausible MNS model by incorporating general spatial transformation capabilities that are assumed to be encoded by the intraparietal sulcus (IPS) and the superior parietal lobule (SPL) as well as investigating their interactions with the inferior frontal gyrus and the inferior parietal lobule. The results reveal that the IPS/SPL could process the frame of reference and the viewpoint transformations, and provide invariant visual representations for the temporo-parieto-frontal circuit. This allows the imitator to imitate the action performed by a demonstrator under various perspectives while replicating results from the literatures. Our results confirm and extend the importance of perspective transformation processing during action observation and imitation.

关键词： importance observation transformation

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Study on free electrons generated by concealed radioactive materials under controlled gaseous environment

Study on free electrons generated by concealed radioactive m...

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International Conference on Infrared and Millimeter Waves

作者： D. S. Kim W. S. Lee J. H. So E. M. Choi Physics Program in Graduate School of UNIST Ulsan National Institute of Science and Technology Ulsan South Korea Agency for Defense Development Daejeon South Korea Physics Program in Graduate School of UNIST School of Electrical and Computer Engineering Ulsan National Institute of Science and Technology Ulsan South Korea

We estimate the amount of free electrons generated by concealed radioactive materials using MCNP code. This simulation results show that the existence of radioactive sources enhances the number of photons and backgrou... 详细信息

关键词： Containers Photonics Steel Radioactive materials Gyrotrons Electric breakdown

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Prot-Class: A bioinformatics tool for protein classification based on amino acid signatures

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Natural science 2012年第12期4卷 1161-1164页

作者： Jens Lichtenberg Brian D. Keppler Thomas Conley Dazhang Gu Paul Burns Lonnie R. Welch Allan M. Showalter Biomedical Engineering Program Ohio University Athens USA Department of Environmental and Plant Biology College of Arts and Sciences Ohio University Athens USA Molecular and Cellular Biology Program Ohio University Athens USA School of Electrical Engineering and Computer Science Russ College of Engineering Ohio University Athens USA

Knowledge about characteristics shared across known members of a protein family enables their identification within the complete set of proteins in an organism. Shared features are usually expressed through motifs, which can incorporate specific patterns and even amino acid (AA) biases. Based on a set of classification patterns and biases it can be determined which additional proteins may belong to a specific family and share its functionality. A bioinformatics tool (Prot-Class) was implemented to examine protein sequences and characterize them based upon user-defined AA composition percentages and user defined AA patterns. In addition the tool allows for the identification of repeated AA patterns, biased AA compositions within windows of user-defined length, and the characteristics of putative signal peptides and glycosylphosphatidylinositol (GPI) lipid anchors. ProtClass is general purpose and can be applied to analyze protein sequences from any organism. The Prot-Class source code is available through the GNU General Public License v3 and can be accessed via the Google Code Repository: http://***/p/prot-class/.

关键词： Bioinformatics Protein Classification Arabidopsis

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A Taxonomy for User-Healthcare Robot Interaction

A Taxonomy for User-Healthcare Robot Interaction

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

作者： Conrad Bzura Hosung Im Tammy Liu Kevin Malehorn Taskin Padir Bengisu Tulu Biomedical Engineering Department Worcester Polytechnic Institute Worcester MA 01609 USA Robotics Engineering Program Worcester Polytechnic Institute Worcester MA 01609 USA Management Information Systems Program Worcester Polytechnic Institute Worcester MA 01609 USA Assistant Professor of Robotics Engineering and Electrical and Computer Engineering Worcester Polytechnic Institute Worcester MA 01609 USA Assistant Professor in the School of Business Worcester Polytechnic Institute Worcester MA 01609 USA

ISBN: (纸本)9781424441198

This paper evaluates existing taxonomies aimed at characterizing the interaction between robots and their users and modifies them for health care applications. The modifications are based on existing robot technologies and user acceptance of robotics. Characterization of the user, or in this case the patient, is a primary focus of the paper, as they present a unique new role as robot users. While therapeutic and monitoring-related applications for robots are still relatively uncommon, we believe they will begin to grow and thus it isimportant that the spurring relationship between robot and patient is well understood.

关键词： understood relationship isimportant

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Towards improving mission execution for autonomous gliders with an ocean model and kalman filter

Towards improving mission execution for autonomous gliders w...

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IEEE International Conference on robotics and Automation (ICRA)

作者： Ryan N. Smith Jonathan Kelly Gaurav S. Sukhatme School of Engineering Systems Queensland University of Technology Brisbane QLD Australia Robust Robotics Group Computer Science and Artificial Intelligence Laboratory Massachusetts Institute of Technology Cambridge MA USA Robotic Embedded Systems Laboratory Department of Computer Science University of Southern California Los Angeles CA USA

Effective execution of a planned path by an underwater vehicle is important for proper analysis of the gathered science data, as well as to ensure the safety of the vehicle during the mission. Here, we propose the use of an unscented Kalman filter to aid in determining how the planned mission is executed. Given a set of waypoints that define a planned path and a dicretization of the ocean currents from a regional ocean model, we present an approach to determine the time interval at which the glider should surface to maintain a prescribed tracking error, while also limiting its time on the ocean surface. We assume practical mission parameters provided from previous field trials for the problem set up, and provide the simulated results of the Kalman filter mission planning approach. The results are initially compared to data from prior field experiments in which an autonomous glider executed the same path without pre-planning. Then, the results are validated through field trials with multiple autonomous gliders implementing different surfacing intervals simultaneously while following the same path.

关键词： Navigation Vehicles Sea surface Trajectory Kalman filters Uncertainty

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A portable system for recording neural activity in indoor and outdoor environments.

A portable system for recording neural activity in indoor an...

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

作者： Farhan Baluch Laurent Itti Neuroscience Graduate Program University of Southern California Los Angeles CA 90089 Neuroscience Graduate Program and the faculty of the Dept. of Computer Science Viterbi School of Engineering University of Southern California Los Angeles CA 90089

ISBN: (纸本)9781424441198

We present a self-contained portable USB based device that can amplify and record small bioelectric signals from insects and animals. The system combines a purpose built low noise amplifier with off the shelf components to provide a low cost low power system for recording electrophysiological signals. Using open source software the system is programmed as a simple USB device and can be connected to any USB capable computer for recording data. This simple and universal interface provides the ability to connect to a variety of systems. Open source acquisition software was also written to record signals under the linux operating system. Performance analysis shows that our device is able to record good quality signals both indoors and outdoors and delivers this performance at a very low cost. Compared to larger systems our device provides the additional advantage of portability given that it can fit into a pocket and costs a fraction of large systems used in electrophysiology labs.

关键词： contained electrophysiology amplify

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Comparison of known food weights with image-based portion-size automated estimation and adolescents' self-reported portion size

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Journal of Diabetes science and Technology 2012年第2期6卷 428-434页

作者： Lee, Christina D. Chae, Junghoon Schap, TusaRebecca E. Kerr, Deborah A. Delp, Edward J. Ebert, David S. Boushey, Carol J. College of Liberal Arts Purdue University West Lafayette IN United States College of Electrical and Computer Engineering Purdue University West Lafayette IN United States Department of Nutrition Science Purdue University West Lafayette IN United States School of Public Health Curtin University Perth WA Australia Epidemiology Program University of Hawaii Cancer Center Honolulu HI 96813 1236 Lauhala Street United States

Background: Diet is a critical element of diabetes self-management. An emerging area of research is the use of images for dietary records using mobile telephones with embedded cameras. These tools are being designed to reduce user burden and to improve accuracy of portion-size estimation through automation. The objectives of this study were to (1) assess the error of automatically determined portion weights compared to known portion weights of foods and (2) to compare the error between automation and human. Methods: Adolescents (n = 15) captured images of their eating occasions over a 24 h period. All foods and beverages served were weighed. Adolescents self-reported portion sizes for one meal. Image analysis was used to estimate portion weights. Data analysis compared known weights, automated weights, and self-reported portions. Results: For the 19 foods, the mean ratio of automated weight estimate to known weight ranged from 0.89 to 4.61, and 9 foods were within 0.80 to 1.20. The largest error was for lettuce and the most accurate was strawberry jam. The children were fairly accurate with portion estimates for two foods (sausage links, toast) using one type of estimation aid and two foods (sausage links, scrambled eggs) using another aid. The automated method was fairly accurate for two foods (sausage links, jam);however, the 95% confidence intervals for the automated estimates were consistently narrower than human estimates. Conclusions: The ability of humans to estimate portion sizes of foods remains a problem and a perceived burden. Errors in automated portion-size estimation can be systematically addressed while minimizing the burden on people. Future applications that take over the burden of these processes may translate to better diabetes self-management. © Diabetes Technology Society.

关键词： Adolescents Dietary assessment Mobile telephones Portion size Technology

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High endurance, micro aerial surveillance and reconnaisance robot

High endurance, micro aerial surveillance and reconnaisance ...

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2011 IEEE International Conference on Technologies for Practical Robot Applications, TePRA 2011

作者： Ratti, Jayant Vachtsevanos, George Robotics Program School of Electrical and Computer Engineering United States School of Electrical and Computer Engineering United States

ISBN: (纸本)9781612844824

Micro Aerial Vehicles (MAVs) have gained a significant amount of research lately, with a number of universities and industry sponsors paving the way with micro flying robots to perform Intelligence, Surveillance and Reconnaissance (ISR) Missions. However, much of the work done in flapping wing MAVs till date has not shown performance improvements over their VTOL, rotary-wing counterparts. Research and development over the years has shown that insects and birds have unmatched flying capabilities in the Low Reynolds Number Regime. Their phenomenal flight performance is attributed to among others the highly energy efficient actuation systems & their power to weight ratios, efficient aerodynamics & wing configurations, novel & high-speed flight-control and processing. The paper proposes and illustrates the developments thus far towards the design of a novel, high endurance, flapping wing micro aerial robot for surveillance and reconnaissance. The entire design and development efforts, including aerodynamics, actuation-mechanisms, flight controls, embedded controls & processing and finally flight testing is abridged and presented herein. © 2011 IEEE.

关键词： Aerodynamics

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Herb 2.0: Lessons learned from developing a mobile manipulator for the home

Herb 2.0: Lessons learned from developing a mobile manipulat...

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作者： Srinivasa, Siddhartha S. Berenson, Dmitry Cakmak, Maya Collet, Alvaro Dogar, Mehmet R. Dragan, Anca D. Knepper, Ross A. Niemueller, Tim Strabala, Kyle Vande Weghe, Mike Ziegler, Julius Robotics Institute Carnegie Mellon University Pittsburgh PA 15213 United States Electrical Engineering and Computer Science Department University of California Berkeley Berkeley 94703 United States School of Interactive Computing Georgia Institute of Technology Atlanta GA 30332 United States Knowledge-based Systems Group RWTH Aachen University Aachen 52062 Germany Department of Measurement and Control Systems Karlsruhe Institute of Technology Karlsruhe D-76128 Germany

We present the hardware design, software architecture, and core algorithms of Herb 2.0, a bimanual mobile manipulator developed at the Personal robotics Lab at Carnegie Mellon University, Pittsburgh, PA. We have developed Herb 2.0 to perform useful tasks for and with people in human environments. We exploit two key paradigms in human environments: that they have structure that a robot can learn, adapt and exploit, and that they demand general-purpose capability in robotic systems. In this paper, we reveal some of the structure present in everyday environments that we have been able to harness for manipulation and interaction, comment on the particular challenges on working in human spaces, and describe some of the lessons we learned from extensively testing our integrated platform in kitchen and office environments. © 2012 IEEE.

关键词： Motion planning

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