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2010 ASEE Annual Conference and Exposition

作者： Meah, Kala Garrison, Timothy Kearns, James Link, Gregory Garrison, Laura Blanding, Wayne Celik, Emine Kuchnicki, Stephen Dawson, Jennifer McFarland, Barry Department of Physical Science York College of Pennsylvania United States Mechanical Engineering Program York College of Pennsylvania United States Department of Electrical and Computer Engineering York College of Pennsylvania United States Department of Thermal Sciences Freshmen Design Courses and Computer Programming York College of Pennsylvania United States Department of Electrical Engineering York College of Pennsylvania United States York College of Pennsylvania United States Department of Mechanical Engineering York College of Pennsylvania United States

All freshman engineering students at York College participate in a spring semester design challenge as part of a year-long, two-course introduction to engineering. This paper describes the course organization, the project goals, and project itself and how it supports the broader engineering curriculum goals of engaging freshman engineering students in a design project, exposing them in an interesting way to the breath of engineering, and motivating them in their engineering studies. The students work in small teams and have roughly 12 weeks to design an automated electromechanical system that first transports three empty Snapple bottles, three tennis balls, and 36 oz. of water to a 2/x3/ operational zone. The machine must fill each bottle with 12 oz. of water, cap each bottle by covering the top with a tennis ball, and then deliver the capped and filled bottles to an area outside of the operational zone. The bottle-filling project serves as the second of two interdisciplinary engineering design experiences during the freshman year. It introduces aspects of computer, electrical, and mechanical engineering, including the following five primary knowledge areas: (i) machining and fabrication;(ii) electronic circuit prototyping and programming;(iii) sensor and actuator applications;(iv) mechanical design;(v) project planning;and (vi) presentation skills. A project demonstration at the end of the semester determines the relative effectiveness of each machine based upon a number of quantitative factors, including the total time required to complete the overall process, the volume of water in each bottle, the number of bottles successfully capped, the amount of water spilled, and approximate manufacturing cost. Some qualitative factors considered are simplicity, creativity, and aesthetics. Student interest in this substantial hands-on experience, as measured by surveys and exhibited by attendance, enthusiasm, productivity, and success, appears to be high through the three y

关键词： Bottles

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Learning to navigate through crowded environments

Learning to navigate through crowded environments

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Peter Henry Christian Vollmer Brian Ferris Dieter Fox Department of Computer Science & Engineering University of Washington Seattle WA USA Neuroinformatics and Cognitive Robotics Laboratory Ilmenau University of Technology Germany

The goal of this research is to enable mobile robots to navigate through crowded environments such as indoor shopping malls, airports, or downtown side walks. The key research question addressed in this paper is how to learn planners that generate human-like motion behavior. Our approach uses inverse reinforcement learning (IRL) to learn human-like navigation behavior based on example paths. Since robots have only limited sensing, we extend existing IRL methods to the case of partially observable environments. We demonstrate the capabilities of our approach using a realistic crowd flow simulator in which we modeled multiple scenarios in crowded environments. We show that our planner learned to guide the robot along the flow of people when the environment is crowded, and along the shortest path if no people are around.

关键词： Navigation Learning Cost function Mobile robots Airports Robot sensing systems Gaussian processes Robotics and automation USA Councils computer science

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Teaching CS1 with Python GUI Game programming

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AIP Conference Proceedings 2010年第1期1247卷 253-260页

作者： Hong Wang Computer Science and Engineering Technology Program Engineering Technology Department The University of Toledo 2801 W. Bancroft Street Mailstop 402 Toledo OH 43606‐3390

Python is becoming a popular programming language in teaching freshman programming courses. The author designed a sequence of game programming labs using Pygame to further help engage students and to improve their pro...

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Heterogeneous artificial agents for triage nurse assistance

Heterogeneous artificial agents for triage nurse assistance

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2010 10th IEEE-RAS International Conference on Humanoid Robots, Humanoids 2010

作者： Wilkes, D.M. Franklin, Stan Erdemir, Erdem Gordon, Stephen Strain, Steve Miller, Karen Kawamura, Kazuhiko Center for Intelligent Systems United States Department of Electrical and Computer Engineeinrg Vanderbilt University United States Cognitive Computing Research Group Institute for Intelligent Systems University of Memphis Memphis TN 38152 United States Department of Electrical Engineering and Computer Science Vanderbilt University United States Vanderbilt University United States Cognitive Computing Research Group Institute for Intelligent Systems University of Memphis United States Clinical Research Operations for Emergency Medicine Vanderbilt University United States Department of Electrical and Computer Engineering Vanderbilt. University Nashville TN 37235-0131 United States

ISBN: (纸本)9781424486885

A dream of humanoid robot researchers is to develop a complete "human-like" (whatever that means) artificial agent both in terms of body and brain. We now have seen an increasing number of humanoid robots (such as Honda's ASIMO, Aldebaran's Nao and many others). These, however, display only a limited number of cognitive skills in terms of perception, learning and decision-making. On the other hand, brain research has begun to produce computational models such as LIDA. In this paper, we propose an intermediate approach for body-brain integration in a form of a scenario-based distributed system. Busy hospital Emergency departments (ED) are concerned with shortening the waiting times of patients, with relieving overburdened triage team physicians, nurses and medics, and with reducing the number of mistakes. Here we propose a system of cognitive robots and a supervisor, dubbed the TriageBot System that would gather both logistical and medical information, as well as take diagnostic measurements, from an incoming patient for later use by the triage team. TriageBot would also give tentative, possible diagnoses to the triage nurse, along with recommendations for non-physician care Some of the robots in the TriageBot System would be humanoid in form, but it is not necessary that all of them take this form. Advances in humanoid robotic design, in sensor technology, and in cognitive control architectures make such a system feasible, at least in principle. ©2010 IEEE.

关键词： Anthropomorphic robots

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Accelerating the Shuffled Frog Leaping algorithm by parallel implementations in FPGAs

Accelerating the Shuffled Frog Leaping algorithm by parallel...

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2010 IEEE 5th International Conference on Bio-Inspired Computing: Theories and Applications, BIC-TA 2010

作者： Muñoz, Daniel M. Llanos, Carlos H. Dos S. Coelho, Leandro Ayala-Rincón, Mauricio Department of Mechanical Engineering Automation and Control Group/GRACG University of Brasilia Brasilia D.F. Brazil Industrial and Systems Engineering Graduate Program Pontifical Catholic University of Parana Curitiba Parana Brazil Department of Computer Science and Mathematics University of Brasilia Brasilia D.F. Brazil

ISBN: (纸本)9781424464388

Meta-heuristics are efficient techniques for solving large scale optimization problems in which traditional mathematical techniques are impractical or provide sub-optimal solutions. The Shuffled Frog Leaping algorithm (SFLA) is a stochastic iterative method, bio-inspired on the memetic evolution of a group of frogs when seeking for food, which combines the social behavior-based of the particle swarm optimization technique (PSO) and the global information exchange of memetic algorithms. However, the SFLA algorithm suffers on large execution times, being this problem clearly evident when solving complex optimization problems for embedded applications. This drawback can be overcome by exploiting the parallel capabilities of the SFLA. This paper proposes a hardware parallel implementation of the SFLA algorithm (HPSFLA) using FPGAs (Field programmable gate Arrays) and the efficient floating-point arithmetic. The proposed architecture allows the SFLA to improve the functionality of the algorithm as well as to decrease the execution times by implementing parallel frogs and parallel memeplexes. Three well-known benchmark problems have been used to validate the implemented algorithm and simulation results demonstrate that the HPSFLA speeds-up by factors of 362, 727 and 211 a C-code implementation using an embedded microprocessor for the Sphere, Rastrigin and Rosenbrock benchmarks problems, respectively. Synthesis, simulation and execution time results demonstrate the effectiveness of the proposed HPSFLA architecture for embedded optimization systems. © 2010 IEEE.

关键词： Global optimization

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Growth and characteristics of GaInN/GaInN multiple quantum well light-emitting diodes

Growth and characteristics of GaInN/GaInN multiple quantum w...

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作者： Lee, Wonseok Kim, Min-Ho Zhu, Di Noemaun, Ahmed N. Kim, Jong Kyu Schubert, E.F. Future Chips Constellation and Engineering Science Program Rensselaer Polytechnic Institute Troy NY 12180 United States Samsung LED Suwon 443-743 Korea Republic of Future Chips Constellation Department of Physics Applied Physics and Astronomy Rensselaer Polytechnic Institute Troy NY 12180 United States Future Chips Constellation Department of Electrical Computer and Systems Engineering Rensselaer Polytechnic Institute Troy NY 12180 United States Department of Materials Science and Engineering Pohang University of Science and Technology Pohang 790-784 Korea Republic of

We demonstrate GaInN multiple quantum well (MQW) light-emitting diodes (LEDs) having ternary GaInN quantum barriers (QBs) instead of conventional binary GaN QBs for a reduced polarization mismatch between QWs and QBs and an additional separate confinement of carriers to the MQW active region. In comparison with GaInN LEDs with conventional GaN QBs, the GaInN/GaInN LEDs show a reduced blueshift of the peak wavelength with increasing injection current and a reduced forward voltage. In addition, we investigate the density of pits emerging on top of the MQW layer that are correlated with V-defects and act as a path for the reverse leakage current. The GaInN/GaInN MQW structure has a lower pit density than the GaInN/GaN MQW structure as well as a lower reverse leakage current. Finally, the GaInN/GaInN MQW LEDs show higher light output power and external quantum efficiency at high injection currents compared to the conventional GaInN/GaN MQW LEDs. We attribute these results to the reduced polarization mismatch and the reduced lattice mismatch in the GaInN/GaInN MQW active region. © 2010 American Institute of Physics.

关键词： III-V semiconductors

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Sub-fingerprint masking for a robust audio fingerprinting system in a real-noise environment for portable consumer devices

Sub-fingerprint masking for a robust audio fingerprinting sy...

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IEEE International Conference on Consumer Electronics (ICCE)

作者： Wooram Son Hyun-Tae Cho Kyoungro Yoon Program in Radiation Applied Life Science Seoul National University South Korea Department of Computer Science and Engineering Konkuk University South Korea

ISBN: (纸本)9781424443147

The robustness of audio fingerprinting system in a noisy environment is a principal challenge in the area of content-based audio retrieval, especially for use in portable consumer devices. Our new audio fingerprint method using sub-fingerprint masking based on the predominant pitch extraction increases the accuracy of the audio fingerprinting system in a noisy environment dramatically, while requiring much less computing power compared to the expanded hash table lookup method, where the searching complexity increases by the factor of 33 times the degree of expansion.

关键词： Fingerprint recognition Noise robustness Working environment noise Audio databases Frequency conversion Frequency domain analysis Acoustic noise Content based retrieval Filtering computer science

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Distributed energy resources in electricity markets: The price droop mechanism

Distributed energy resources in electricity markets: The pri...

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Annual Allerton Conference on Communication, Control, and Computing

作者： Judith B. Cardell Chin Yen Tee Picker Engineering Program and Department of Computer Science Smith College Northampton MA USA Picker Engineering Program Smith College Northampton MA USA

Distributed energy resources (DER), including small-scale generation, renewable energy technologies, and demand response, are disadvantaged with respect to central generating facilities as a consequence of being excluded from regional energy and ancillary services markets. This paper proposes a price-based open-loop control signal to facilitate significantly increasing DER penetration in the power system by coordinating their participation in electricity markets while also maintaining the local system energy balance. The proposed signal introduces the concept of “price droop” that is based upon the concepts of frequency droop and own price elasticity. The use of this signal is demonstrated in a variety of scenarios with DER in a microgrid operating in islanded mode.

关键词： Density estimation robust algorithm Generators Electricity Power generation Games Load flow Electricity supply industry

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A closed-loop brain computer interface for real-time seizure detection and control

A closed-loop brain computer interface for real-time seizure...

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

作者： Sheng-Fu Liang Fu-Zen Shaw Chung-Ping Young Da-Wei Chang Yi-Cheng Liao Department of Computer Science and Information Engineering & the Institute of Medical Informatics National Cheng Kung University Tainan County Taiwan Institute of Cognitive Science National Cheng Kung University Tainan County Taiwan Department of Computer Science and Information Engineering National Cheng Kung University Tainan County Taiwan

The worldwide prevalence of epilepsy is approximately 1%, and 25% of epilepsy patients cannot be treated sufficiently by available therapies. Brain stimulation with closed-loop seizure control has recently been proposed as an innovative and effective alternative. In this paper, a portable closed-loop brain computer interface for seizure control was developed and shown with several aspects of advantages, including high seizure detection rate (92-99% during wake-sleep states), low false detection rate (1.2-2.5%), and small size. The seizure detection and electrical stimulation latency was not greater than 0.6 s after seizure onset. A wireless communication feature also provided flexibility for subjects freeing from the hassle of wires. Experimental data from freely moving rats supported the functional possibility of a real-time closed-loop seizure controller.

关键词： Electroencephalography Epilepsy Rats Real time systems Wireless communication Discharges Entropy

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Title detection algorithm for OCR credentials image based on directional projection and divergence

Title detection algorithm for OCR credentials image based on...

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International Conference on computer science and Information Technology (CSIT)

作者： Zhiwen Wang Guoqing Xie Shaozi Li Zhi Liu Department of Computer and Engineering Guangxi University of Technology Liuzhou China Cognitive Science Department Xiamen University Xiamen China Fujian Normal University Fuzhou China Department of Computer and Engineering University of Technology Liuzhou China

According to the OCR character region in OCR credentials image, a new skew detection method was presented by using Bresenham's integer only line drawing algorithm and within-group measure of dispersion. Several directional projection are calculated in the algorithm by using Bresenham's integer line drawing algorithm. At the same time calculating minimal within-group measure of dispersion of the directional projection. After searching minimal value of all within-class divergence, the angle relative of minimal value is the one of the OCR credentials. Experiment results show that the new method can measure out the slanting degree of an OCR credentials image efficiently and accurately.

关键词： Optical character recognition software

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