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IEEE International Symposium on Industrial Electronics (ISIE)

作者： H.O. Almeida L. Dias da Silva E. Oliveira A. Perkusich Department of Electrical Engineering Federal University of Campina Grande Campina Grande Paraiba Brazil Graduate Program in Computer Science Federal University of Campina Grande Campina Grande Paraiba Brazil

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Effects of deposition and synthesis parameters on size, density, structure, and field emission properties of Pd-catalyzed carbon nanotubes synthesized by thermal chemical vapor deposition

Journal of Vacuum Science & Technology B: Microelectronics a...

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Journal of Vacuum science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena 2005年第2期23卷 793-799页

作者： S. Wei W. P. Kang W. H. Hofmeister J. L. Davidson Y. M. Wong J. H. Huang Interdisciplinary Program in Materials Science Vanderbilt University Nashville Tennessee 37235 USA Department of Electrical and Computer Engineering Vanderbilt University Box 1661-B Vu Station B Nashville Tennessee 37235 USA Department of Chemical Engineering Vanderbilt University Nashville Tennessee 37235 USA Department of Materials Science and Engineering National Tsing Hua University Hsinchu 300 Taiwan Republic of China

The effects of deposition parameters and NH3 pretreatment on the size and distribution of Pd catalytic particles and subsequently their effects on the characteristics of the synthesized carbon nanotubes (CNTs) were systematically investigated. It was found that the size of Pd particles decreases and the particle density (total number of Pd particles per unit area) increases as the Pd film thickness decreases. Moreover, pretreatment of Pd film in NH3 gas promotes smaller Pd particles and higher particle density which is beneficial for CNT growth. The CNTs were synthesized by thermal chemical vapor deposition at 750 °C using methane (CH4) as the carbon source, and a mixture of Ar/H2 (80 vol %: 20 vol %) as a carrier gas with NH3 serving as a processing reagent. The incorporation of NH3 in CNT synthesis, per the specific pretreatment of catalytic film, has a distinct effect on the size and morphology of CNTs produced. The interrelation between processing, structure and emission behavior of CNTs produced with different synthesis conditions was examined by scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, and field emission measurements.

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Modeling of spatially periodic dielectric sensors in the presence of a top ground plane bounding the test dielectric

Modeling of spatially periodic dielectric sensors in the pre...

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作者： Sheiretov, Y. Zahn, M. JENTEK Sensors Inc. 110-1 Clematis Ave. Waltham MA 02451-7013 United States Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 United States Eta Kappa Nu Honor Society Department of Electrical Engineering MIT MIT Course VI-A Electrical Engineering Computer Science Internship Program Liquid Dielectrics Committee International Advisory Committee International Conference on Dielectric Liquids

Semi-analytical models are used to simulate the response of periodic-field electro quasistatic dielectrometry sensors. Due to the periodic structure of the sensors it is possible to use Fourier series methods in combination with collocation point numerical techniques to generate accurate sensor simulations much more efficiently than with the more general finite-element methods. Previously, collocation-point models used to compute the response of periodic field dielectric sensors, also known as Interdigitated Electrode Dielectrometers (IDED), have ignored the contribution of the constant (zero-order) term in the Fourier series expansion of the physical quantities. This is justifiable if the top dielectric material layer under test is infinitely thick, with any top ground plane bounding the dielectric removed too far from the sensor to influence its response. This is the assumption generally made until now in the application of these models. In practice, however, it is impossible to eliminate the cumulative effect of objects at ground potential in the vicinity of the sensor, which in general manifests itself as a ground plane electrode positioned at some effective distance within the top dielectric layer (usually air). In order to eliminate this source of uncertainty in the measurements, we suggest that a grounded electrode be explicitly placed at the top of the dielectric layer in the experimental setup, and its presence be accounted for in the models. Furthermore, in many cases, such as measurements on ceramic thermal barrier coatings, a metal layer is already present behind the material under test. In this paper we present how the models must be modified to account for this ground plane, and what effect it has on the dependence of the sensor response on the material properties. For example, the sensor transcapacitance may no longer be a monotonically increasing function of the material's permittivity, leading to nonuniqueness in permittivity measurements, as some f

关键词： Dielectric devices

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CUMBIA: an agent framework to detect opportunities for collaboration

CUMBIA: an agent framework to detect opportunities for colla...

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International Conference on computer Supported Cooperative Work in Design

作者： M. Moreno A. Vivacqua J. de Souza Computer Science Program Graduate School of Engineering COPPE Rio de Janeiro Brazil DCC/IM-Institute of Mathematics Federal University of Rio de Janeiro Rio de Janeiro Brazil

With the increase in adoption of remote work groups and teams working in non-collocated environments, several opportunities for interaction have been lost. Contact with colleagues and discovery of opportunities, previously easy due to physical proximity, is made harder with distance. In this paper, we describe an agent-based framework to assist users in finding opportunities for interaction that may have been overlooked.

关键词： Collaboration Collaborative work computer science Mathematics Team working IP networks computer networks Teleconferencing Subcontracting Scheduling

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An augmented reality training environment for post-stroke finger extension rehabilitation

An augmented reality training environment for post-stroke fi...

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IEEE International Conference on Rehabilitation Robotics (ICORR)

作者： Xun Luo R.V. Kenyon T. Kline H.C. Waldinger D.G. Kamper Sensory Motor Performance Program Rehabilitation Institute of Chicago and Northwestern University USA Computer Science Department University of Illinois Chicago USA Neuromechanics Laboratory Department of Biomedical Engineering Marquette University USA

Finger extension is an important hand function and is crucial for object exploration and manipulation. Unfortunately, the impairment of this motor function is common among stroke survivors. A training environment incorporating augmented reality (AR) in conjunction with assistive devices has been developed for the rehabilitation of finger extension. The environment consists of three components: the stroke survivor user element consisting of AR equipment/software and body-powered orthosis; the therapist element comprised of monitoring/control interface with visual, audio and force feedback; and the networking module which interconnects these two. In this paper we present the structure of this environment along with the results from a pilot case study with a stroke survivor.

关键词： Augmented reality Fingers Rehabilitation robotics USA Councils

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Protein function classification based on gene ontology

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2nd Asia Information Retrieval Symposium, AIRS 2005

作者： Park, Dae-Won Heo, Hyoung-Sam Kwon, Hyuk-Chul Chung, Hea-Young Department of Computer Science and Engineering Pusan National University 30 Jangjeon-dong Geumjung-gu Busan 609-735 Korea Republic of Interdisciplinary Program of Bioinformatics Pusan National University 30 Jangjeon-dong Geumjung-gu Busan 609-735 Korea Republic of Department of Pharmacy Pusan National University 030 Jangjeon-dong Geumjung-gu Busan 609-735 Korea Republic of

ISBN: (纸本)3540291865

Most proteins interact with other proteins, cells, tissues or diseases. They have biological functions and can be classified according to their functions. With the functions and the functional relations of proteins, we can explain many biological phenomena and obtain answers in solving biological problems. Therefore, it is important to determine the functions of proteins. In this paper we present a protein function classification method for the function prediction of proteins. With human proteins assigned to GO molecular function terms, we measure the similarity of proteins to function classes using the functional distribution. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Proteins

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Comparing adaptation of constrained and unconstrained movements in three dimensions

Comparing adaptation of constrained and unconstrained moveme...

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IEEE International Conference on Rehabilitation Robotics (ICORR)

作者： C. Scharver J. Patton R. Kenyon E. Kersten Sensory Motor Performance Program Rehabilitation Institute of Chicago Chicago IL USA Robotics Laboratory Rehabilitation Institute of Chicago Chicago IL USA Department of Computer Science University of Illinois Chicago IL USA Biomedical Engineering Graduate Program University of Wisconsin Madison WI USA

This paper describes targeted reaching experiments conducted using a new augmented reality system. Combining a large-workspace immersive virtual environment with physical force feedback, the system distorted subjects' movements using a viscous curl force field. Following previous experiments using a different robot, half the subjects were constrained to horizontal, planar movements. The remaining subjects performed unconstrained movements throughout the 3D workspace. Examining after-effects as an indication of learning, we found that constrained subjects learned the force field. However, it was difficult to detect whether the unconstrained subjects learned forces of identical magnitude. Our results found that force fields strengths eliciting constrained 2D adaptation have difficulty exhibiting after-effects for unconstrained 3D movements. The increased motor variability for 3D reaching movements requires consideration for future experimental design.

关键词： Rehabilitation robotics Robot sensing systems Nonlinear distortion Force feedback Displays Laboratories Augmented reality Virtual environment Design for experiments Haptic interfaces

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A survey of reliability modeling methodologies for digital instrumentation and control systems

A survey of reliability modeling methodologies for digital i...

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2005 Annual Meeting - American Nuclear Society

作者： Kirschenbaum, Jason Stovsky, Michael Bucci, Paolo Aldemir, Tune Arndt, Steven A. Ohio State University Department of Computer Science and Engineering 395 Dreese Labs. 2015 Neil Ave. Columbus OH 43210 United States 4837 Carrigan Ridge Drive Dublin OH 43017 United States Ohio State University Nuclear Engineering Program Bldg. 1 650 Ackerman Road Columbus OH 43202 United States U.S. Nuclear Regulatory Commission Office of Nuclear Regulatory Research Washington DC 20555 United States

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Significant improvements in statewide test results as a consequence of using a japanese-based supplemental mathematics system, kumon mathematics, in an inner-urban school district

Significant improvements in statewide test results as a cons...

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2005 ASEE Annual Conference and Exposition: The Changing Landscape of engineering and Technology Education in a Global World

作者： Oakley, Barbara Lawrence, Doreen Petway, Jesse Jackson, Mark Dessert, Pat Hanna, Darrin School of Engineering and Computer Science Oakland University Rochester MI 48306 United States Kumon North America Inc. Glenpointe Centre 300 Frank W. Burr Boulevard Teaneck NJ 07666 United States School District of Pontiac Odell Naila Administration Building 47200 Woodward Avenue Pontiac MI 48342 United States Oakland University Rochester MI United States Kumon Children's Research Institute Kumon North America Inc. Teaneck NJ United States Pontiac School District United States Office of Program Evaluation and Instruction Assessment Pontiac School District United States Department of Computer Science and Engineering Oakland University Rochester MI United States

This paper provides an evaluation of the effects of using the Kumon method for supplementing the teaching of mathematics in the inner-urban school district of Pontiac, Michigan. Michigan Educational Assessment program (MEAP) test scores are cited for Herrington, Owen, and Crofoot elementary schools, which used the Kumon program during part of their ninety minutes of daily mathematics instruction, and demographically matched Emerson Elementary School, which did not use the Kumon program during its ninety minutes of daily mathematics instruction. In 2003, Emerson had 4.5% of its students exceed Michigan standards. In 2004 that number was 8.6%. At Herrington Elementary School, however, the MEAP scores rose from 39.7% to 89.1% of students exceeding state standards during the same single year period. Crofoot went from 0.0% of students exceeding Michigan state standards in 2003, to a remarkable 58.1% exceeding standards in 2004. Owen also showed substantive improvements. The research project, a joint effort between Oakland University's School of engineering and the School District of Pontiac, reveals that supplementation with the Kumon method as a partial replacement for a traditional mathematics program appears to result in significant improvements in statewide Michigan Educational Assessment program test scores for mathematics.

关键词： engineering education

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Elementary science classroom learning with wireless response devices implementing active and experiential learning

Elementary science classroom learning with wireless response...

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IEEE International Workshop on Wireless, Mobile and Ubiquitous Technology in Education (WMUTE)

作者： Yu-Fen Chen Chen-Chung Liu Ming-Hung Yu Sung-Bin Chang Yun-Chen Lu Tak-Wai Chan Department of Computer Science Information Engineering National Central University Taiwan Graduate Institute of Network Learning Technology National Central University Taiwan Degree Program of E-Learning College of Science National Chiao Tung University Taiwan Chu-Wei Elementary School Taiwan

Active learning enables learners to actively engage in learning. Learning not only transfers material to students for learning, but also encourages greater mental engagement and more extensive student-student and student-instructor interaction than does a typical lecture class. Peer instruction (PI) engages students in active learning by achieving continuous instructor-student interaction in a physics lecture. However, the methodologies and the effectiveness of implementing PI for elementary school students have seldom been clarified. This study explores the possibility of adopting PI in an elementary science classroom. The research considerations of the study are as follows: (1) how wireless technology can enhance PI in elementary science classroom; (2) how a teacher can engage students in pre-class reading, and (3) whether elementary school students have sufficient social skills to perform a PI discussion? These questions are examined by observing how the PI pedagogical model worked with a wireless response system in elementary science classroom. Based on the observation, this study also proposes a way of improving the PI learning experience of elementary school students by adding experiments and observations during peer discussion to explain concepts and phenomena in physics.

关键词： Educational institutions Physics Chemical elements computer science Materials science and technology Electronic learning Probes Astrochemistry Physiology Astronomy

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