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57th Annual Conference on Information Sciences and Systems, CISS 2023

作者： Deniz, Daniel Ros, Eduardo Fermller, Cornelia Barranco, Francisco University of Granada Dep. of Computer Architecture and Technology Spain University of Maryland Perception and Robotics Group United States

ISBN: (纸本)9781665451819

Visual event sensors only output data when changes in the scene happen at very high frequency. This allows for smartly compressing the scene and thus, enabling real-time operation. Despite these advantages, works in the literature have struggled to show a niche for these event-driven approaches compared to conventional sensors, especially when focusing on accuracy performance. In this work, we show a case that fully exploits event sensor advantages: for manipulation action recognition, learning events achieves superior accuracy and time performance. The recognition of manipulation actions requires extracting and learning features from the hand pose and trajectory and the interaction with the object. As shown in our work, approaches based on event sensors are the best fit for extracting these dynamic features contrarily to conventional approaches based on full frames, which mostly extract spatial features and need to reconstruct the dynamics from sequences of frames. Finally, we show how using a tracker to extract the features to be learned only around the hand, we obtain an approach that is scene- and almost object-agnostic and achieves good time performance with a very limited impact in accuracy. © 2023 IEEE.

关键词： Palmprint recognition

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When Do Neuromorphic Sensors Outperform cameras? Learning from Dynamic Features

When Do Neuromorphic Sensors Outperform cameras? Learning fr...

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Annual Conference on Information Sciences and Systems (CISS)

作者： Daniel Deniz Eduardo Ros Cornelia Fermller Francisco Barranco Dep. of Computer Architecture and Technology University of Granada Spain Perception and Robotics Group University of Maryland USA

关键词： Visualization Neuromorphics Neural networks Human-robot interaction Sensor phenomena and characterization Feature extraction Real-time systems

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Determinants of Electric Vehicle Adoption and Integration with Public Transportation through Park-and-Ride

Determinants of Electric Vehicle Adoption and Integration wi...

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International Wireless Communications and Mobile Computing Conference, IWCMC

作者： Mulham Fawakherji Driss Benhaddou Bruce Race Bryan. Carrollia Wilfredo. Santamaria Dep. Computer Engineering Technology University of Houston Houston USA Dep. of Electrical Engineering College of Engineering Alfaisal University Riyadh SA College of Architecture and Design University of Houston Houston USA Metropolitan Transit Authority of Harris County Houston USA

The rise of Electric Vehicles (EVs) has presented a promising solution to the environmental and resource challenges posed by conventional combustion engine vehicles. With their potential to significantly reduce greenhouse gas emissions and enhance air quality, the adoption of EVs is essential for a more sustainable future. However, despite their benefits, widespread adoption remains limited. Thus, understanding the key factors that impact consumer adoption is crucial for promoting their use. This study aims to identify and analyze the various determinants that influence EV adoption, including social and demographic, political, economic, technological, and environmental factors. The findings offer valuable insights into the most significant barriers to EV adoption and provide potential strategies to encourage their use. Furthermore, this study examines the feasibility and sustainability of integrating EVs with public transportation via park-and-ride stations, emphasizing the importance of promoting sustainable transportation given the continued reliance on personal vehicles for park-and-ride travel.

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Electronic Energy System and Energy Management Algorithm for FutureHAUS

Electronic Energy System and Energy Management Algorithm for...

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IEEE Conference on Power Electronics and Renewable Energy (CPERE)

作者： Vladimir Mitrovic Igor Cvetkovic Dushan Boroyevich Joseph Wheeler Robert Vance The Bradley Dep. of Electrical and Computer Engineering College of Engineering Center for Power Electronics Systems Virginia Polytechnic Institute and State University Blacksburg VA USA Center for Design Research School of Architecture + Design College of Architecture and Urban Studies Virginia Polytechnic Institute and State University Blacksburg VA USA

Technology advancements that happened in the last two decades have changed the way how people live, interact, and work more than any technology did in the past 100 years or so. Not only little “gadgets” enabled this enormous paradigm shift, the new innovative concepts have been well integrated into the design and manufacturing of computers, appliances, automobiles, airplanes, and ships, and it was about time to start seeing these concepts applied to the homes where building practices, by contrast, experienced a very slow, if not resistant effort to advance. At least they did before Virginia Tech demonstrated the use of advanced manufacturing concepts, prefabricated structures, and a great number of power electronics to redefine the conventional practice of modern home design. Its FutureHAUS won first place at the international competition in Dubai, UAE, validating an enormous societal desire to see this change finally happening. This paper will describe details of the electronic energy system implementation as well as an energy management algorithm developed to successfully achieve a net-positive energy balance in the FutureHAUS.

关键词： Resistance computers Renewable energy sources Home appliances Decision making Inverters Manufacturing

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Extremum Seeking Control for Beam Steering using Hypersurfaces

Extremum Seeking Control for Beam Steering using Hypersurfac...

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IEEE International Conference on Communications Workshops, ICC

作者： Nouman Ashraf Marios Lestas Taqwa Saeed Hamidreza Taghvaee Sergi Abadal Andreas Pitsillides Christos Liaskos Dep. of Electrical Engineering Frederick University Dep. of Computer Science University of Cyprus Nicosia Cyprus Dep. of Computer Architecture Universitat Politècnica de Catalunya Barcelona Spain Institute of Computer Science Foundation of Research and Technology Hellas Heraklion Greece

ISBN: (数字)9781728174402

ISBN: (纸本)9781728174419

Hypersurface, a software defined metasurface (SDM) paradigm constitutes a revolutionary technology aiming at offering programmatic control over all aspects of a propagating wave, altering its direction, power, polarization and phase. In the absence of line of sight (LOS) between a transmitter and a receiver, HSF can provide seamless connectivity via programmatic reflection. However, such an application requires fine tuning of the metasurface reconfiguration parameters, which may not be effective when done in an open loop fashion due to model uncertainties. In this work, we consider a feedback-based formulation of the problem, which involves maximization of the received power and propose the use of Extremum Seeking Control (ESC) for the controller implementation due to fact that it is model-free and adheres to the maximization problem. Extensive simulations indicate that the proposed scheme is successful in guiding the impinging wave to the receiver within reasonable time even in the presence of time varying delays incurred by message propagation. In addition, a discrete time implementation is considered, investigating its limitations as we increase the sampling time while also characterizing the traffic within the controller network.

关键词： Receivers Beam steering Transmitters Aerospace electronics computer science Software Delays

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SOC governed algorithm for an EV Cascaded H-Bridge connected to a DC charger

SOC governed algorithm for an EV Cascaded H-Bridge connected...

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European Conference on Power Electronics and Applications

作者： Giulia Tresca Andrea Formentini Filippo Gemma Federico Lusardi Riccardo Leuzzi Pericle Zanchetta Electrical Computer and Biomedical Engineering Dept. University of Pavia Pavia Italy Telecommunications Engineering and Naval Architecture Dep. University of Genova Genova Italy MTA S. p. A (Power Electronics BU) Italy Electrical and Electronic Engineering Dept. University of Nottingham Nottingham United Kingdom

ISBN: (数字)9789075815399

ISBN: (纸本)9781665487009

Cascaded H-Bridge (CHB) converters have been considered valid candidates for replacing the two-level inverter in EV powertrain applications. This paper presents a State of Charge-governed algorithm for charging Li-Ion battery modules within a Cascaded H-Bridge converter for EV powertrain, connected to a DC charger. The novelty of this algorithm lies in the balanced and concurrent charge of the battery modules installed in all submodules of the three-phases, with no extra middle stage converter needed. Simulation and experimental results are shown to prove the validity of the novel architecture and the experimental setup is described.

关键词： Lithium-ion batteries Multilevel converters Voltage measurement Current measurement Process control Europe Mechanical power transmission

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Impact of the Data Retention Threshold Voltage on the Cell-to-Cell SEU Sensitivity of COTS SRAMs

Impact of the Data Retention Threshold Voltage on the Cell-t...

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European Conference on Radiation and its Effects on Components and Systems (RADECS)

作者： Mohammadreza Rezaei Arturo Arinero Panduro Francisco J. Franco Juan Carlos Fabero Hortensia Mecha Manon Letiche Helmut Puchner Juan Antonio Clemente Clemente are With the Computer Architecture Department Facultad de Informática Universidad Complutense de Madrid (UCM) Madrid Spain Solucions & Product Dep. Defense Indra Sistemas Facultad de Ciencias Físicas Universidad Complutense de Madrid (UCM) Aranjuez Spain EMFTEL Dep Institue of Particle and Cosmos Physics (IPARCOS) Facultad de Ciencias Físicas Universidad Complutense de Madrid (UCM) Spain Institut Laue-Langevin (ILL) Grenoble CEDEX 9 France Infineon Technologies Memory Solutions Aerospace & Defense 3901 San Jose CA USA

An experimental study on the cell-to-cell sensitivity of 65-nm, 90-nm and 130-nm volatile bulk COTS SRAMs to thermal neutron irradiation is presented. Results show a dep.ndency between V DR and the number of bitflips... 详细信息

ISBN: (数字)9781665437943

ISBN: (纸本)9781665437950

关键词： Radiation effects Sensitivity Correlation Random access memory Europe Neutrons Threshold voltage

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NTEP-DB 1.0: A relational database for the national turfgrass evaluation program

International Turfgrass Society Research Journal

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International Turfgrass Society Research Journal 2021年第1期14卷

作者： Yiqun Xie Majid Farhadloo Ning Guo Shashi Shekhar Eric Watkins Len Kne Han Bao Aaron J. Patton Kevin Morris Dep. of Computer Science and Engineering Univ. of Minnesota Minneapolis MN 55455 USA Dep. of Geographical Sciences Univ. of Maryland College Park MD 20740 USA Center for Geospatial Information Science Univ. of Maryland College Park MD 20740 USA Dep. of Horticultural Science Univ. of Minnesota St. Paul MN 55108 USA U-Spatial Univ. of Minnesota Minneapolis MN 55455 USA Dep. of Horticulture and Landscape Architecture Purdue Univ. West Lafayette IN 47907 USA National Turfgrass Evaluation Program Beltsville MD 20705 USA

Given field experiment data collected by the National Turfgrass Evaluation Program (NTEP), we aim to design and create a relational database to store the data and support efficient queries. As one of the most widely-known turfgrass research programs in the world, NTEP has generated large volumes of data on turfgrass cultivars and experimental germplasm since the early 1980s, providing invaluable information for a variety of user groups (e.g., homeowners, seed companies, golf course managers, retailers, turfgrass researchers) to select cultivars that best fit their needs (e.g., winter survival, pest tolerance, turf quality). The datasets have historically been stored in large sets of text files and spreadsheets. Currently, NTEP data are delivered to users through a website ( *** ) as summary reports and it can be extremely tedious (e.g., hundreds of clicks, data merging, jargon) to perform a simple query (e.g., best cultivar selection with typical conditions). This significantly limits the use of NTEP data and hides its value from the public. To address these limitations, we carried out an interdisciplinary effort with horticulture and computer science researchers to design and create the first NTEP database – NTEP-DB 1.0 – to reduce the manual efforts and expert knowledge currently required to extract meaningful information from the data. Experiments confirm that the query results are correct, and that the database can greatly reduce manual efforts. Anticipating next-generation advances, we also recommend incorporating spatial data types and analytical techniques into future designs of the database.

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Improving tasks throughput on accelerators using OpenCL command concurrency

arXiv

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arXiv 2018年

作者： Lázaro-Muñoz, A.J. González-Linares, J.M. Gómez-Luna, J. Guil, N. Dep. of Computer Architecture University of Málaga Spain Dep. of Computer Architecture and Electronics University of Córdoba Spain

A heterogeneous architecture composed by a host and an accelerator must frequently deal with situations where several indep.ndent tasks are available to be offloaded onto the accelerator. These tasks can be generated by concurrent applications executing in the host or, in case the host is a node of a computer cluster, by applications running on other cluster nodes that are willing to offload tasks in the accelerator connected to the host. In this work we show that a runtime scheduler that selects the best execution order of a group of tasks on the accelerator can significantly reduce the total execution time of the tasks and, consequently, increase the accelerator use. Our solution is based on a temporal execution model that is able to predict with high accuracy the execution time of a set of concurrent tasks launched on the accelerator. The execution model has been validated in AMD, NVIDIA, and Xeon Phi devices using synthetic benchmarks. Moreover, employing the temporal execution model, a heuristic is proposed which is able to establish a near-optimal tasks execution ordering that signicantly reduces the total execution time, including data transfers. The heuristic has been evaluated with five different benchmarks composed of dominant kernel and dominant transfer real tasks. Experiments indicate the heuristic is able to find always an ordering with a better execution time than the average of every possible execution order and, most times, it achieves a near-optimal ordering (very close to the execution time of the best execution order) with a negligible overhead. Concretely, our heuristic obtains, on average for all the devices, between 84% and 96% of the improvement achieved by the best execution order. Copyright © 2018, The Authors. All rights reserved.

关键词： computer architecture

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Impact of High Particle Flux in Radiation Ground Tests with Protons

Impact of High Particle Flux in Radiation Ground Tests with ...

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European Conference on Radiation and its Effects on Components and Systems (RADECS)

作者： Mohammadreza Rezaei Pedro Martí n-Holgado Yolanda Morilla Francisco J. Franco Juan Carlos Fabero Hortensia Mecha Helmut Puchner Guillaume Hubert Juan Antonio Clemente Computer Architecture Department Facultad de Inform&#x00E1 tica Universidad Complutense de Madrid (UCM) Madrid Spain Centro Nacional de Aceleradores (Universidad de Sevilla CSIC JA) Sevilla Spain EMFTEL Dep. Institute of Particle and Cosmos Physics (IPARCOS) Fac. de F&#x00ED sica Universidad Complutense de Madrid (UCM) Madrid Spain Cypress Semiconductor Technology R&#x0026 D San Jose CA USA ONERA French Aerospace Laboratory Toulouse France

This abstract presents an experimental study of the impact of using a high flux in radiation ground tests on the measured cross-section of SRAMs. Experimental results obtained with 15 MeV protons will show that using ... 详细信息

ISBN: (数字)9781665412353

ISBN: (纸本)9781665429597

关键词： Protons Sensitivity Atmospheric measurements Europe Neutrons Particle measurements

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