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10th International Conference on Precision Physics of Simple Atomic Systems, PSAS 2018

作者： Mocchiutti, E. Bonvicini, V. Danailov, M. Furlanetto, E. Gadedjisso-Tossou, K.S. Guffaanti, D. Pizzolotto, C. Rachevski, A. Stoychev, L. Vallazza, E. Zampa, G. Niemela, J. Ishida, K. Adamczak, A. Baccolo, G. Benocci, R. Bertoni, R. Bonesini, M. Chignoli, F. Clemenza, M. Curioni, A. Maggi, V. Mazza, R. Moretti, M. Nastasi, M. Previtali, E. Bakalov, D. Danev, P. Stoilov, M. Baldazzi, G. Campana, R. D'Antone, I. Furini, M. Fuschino, F. Labanti, C. Margotti, A. Meneghini, S. Morgante, G. Rignanese, L.P. Rossi, P.L. Zuffa, M. Cervi, T. Bari, A De Menegolli, A. Vecchi, C De Nardò, R. Rossella, M. Tomaselli, A. Colace, L. Vincenzi, M De Iaciofano, A. Somma, F. Tortora, L. Ramponi, R. Vacchi, A. Sezione di Trieste via A. Valerio 2 Trieste134127 Italy Elettra-Sincrotrone Trieste S.C.p.A. SS14 Km 163.5 Basovizza Trieste34149 Italy Mathematics and Informatics Department Udine University via delle Scienze 206 Udine Italy Abdus Salam International Centre for Theoretical Physics Strada Costiera 11 Trieste Italy Département de Physique Université de Lomé 01 BP 1515 Lomé Togo Gran Sasso Science Institute - INFN-LNGS via F. Crispi 7 L'Aquila Italy RIKEN-RAL RIKEN Nishina Center for Accelerator-Based Science 2-1 Hirosawa Wako Saitama351-0198 Japan Institute of Nuclear Physics Polish Academy of Sciences Radzikowskiego 152 KrakówPL31342 Poland Sezione di Milano Bicocca piazza della Scienza 3 Milan Italy Università di Milano Bicocca Dip. di Fisica G. Occhialini piazza della Scienza 3 Milan Italy Università di Milano Bicocca Dip. di Scienze dell'Ambiente e della Terra piazza della Scienza 1 Miano Italy Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences blvd. Tsarigradsko ch. 72 Sofia1142 Bulgaria Sezione di Bologna viale Berti Pichat 6/2 Bologna Italy Department of Physics and Astronomy University of Bologna viale Berti Pichat 6/2 Bologna Italy INAF-IAFS Bologna Area della Ricerca via P. Gobetti 101 Bologna Italy Department of Physics University of Pavia via Bassi 6 Pavia Italy Sezione di Pavia via Bassi 6 Pavia Italy Department of Electrical Computer and Biomedical Engineering University of Pavia via Ferrata 5 Pavia Italy Sezione di Roma Tre via della Vasca Navale 84 Rome Italy Dipartimento di Ingegneria Università Degli Studi Roma Tre via V. Volterra 62 Rome Italy Dipartimento di Matematica e Fisica Università di Roma Tre via della Vasca Navale 84 Rome Italy Dipartimento di Scienze Università di Roma Tre viale G. Marconi 446 Rome Italy Sezione di Milano Politecnico piazza Leonardo da Vinci 32 Milan20133 Italy

The main goal of the FAMU experiment is the measurement of the hyperfine splitting (hfs) in the 1S state of muonic hydrogen ΔEhfs (μ - p)1S. The physical process behind this experiment is the following: μp are formed in a mixture of hydrogen and a higher-Z gas. When absorbing a photon at resonance-energy ΔEhfs ≈ 0.182 eV, in subsequent collisions with the surrounding H 2 molecules, the μp is quickly de-excited and accelerated by ∼ 2/3 of the excitation energy. The observable is the time distribution of the K-lines X-rays emitted from the μZ formed by muon transfer (μp) + Z → (μZ)∗ + p, a reaction whose rate depends on the μp kinetic energy. The maximal response, to the tuned laser wavelength, of the time distribution of X-ray from K-lines of the (μZ)∗ cascade indicate the resonance. During the preparatory phase of the FAMU experiment, several measurements have been performed both to validate the methodology and to prepare the best configuration of target and detectors for the spectroscopic measurement. We present here the crucial study of the energy dependence of the transfer rate from muonic hydrogen to oxygen (Λμp → μ0 ), precisely measured for the first time. © Published under licence by IOP Publishing Ltd.

关键词： Kinetic energy

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Multi-Taper and MIMO Techniques for Spectrum Sensing in Cognitive Radio

Multi-Taper and MIMO Techniques for Spectrum Sensing in Cogn...

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IEEE International Conference on Electronics, Circuits, and Systems

作者： Ahmed O. Abdul Salam Ray E. Sheriff Saleh R. Al-Araji Kahtan Mezher Qassim Nasir Faculty of Engineering and Informatics University of Bradford College of Engineering Khalifa University for Science Technology Department of Electrical and Computer Engineering University of Sharjah

ISBN: (纸本)9781509002474

Frequency spectrum sensing is a key and challenging task of modern wireless communication systems. Cognitive radio (CR) has recently been envisioned as an intelligent platform capable of achieving better spectrum sensing and, hence, promotes efficient spectrum utilization. The multi-taper method (MTM) is a good candidate to achieve such a requirement. This paper focuses on the application of MTM spectrum sensing using multiple antenna arrangement environments. Maximal ratio combining (MRC) is employed as near to optimum candidate for diversity combining technique to process the spectrum estimate at the output of multiple receive antennas. Analysis and results show that such an arrangement provides better performance compared to the single antenna option under additive white Gaussian noise (AWGN) conditions. Moreover, a proposal for a new and simple approach to derive the decision statistical measures reveals that the probability density functions (PDFs) share common factors in both time and frequency domains. Furthermore, transmit antenna diversity also assumes direct positive influence on the spectrum sensing performance.

关键词： Cognitive radio Multiple antennas Diversity combining Multi-taper Spectrum sensing

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Bifurcations in two-image photometric stereo for orthogonal illuminations

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AIP Conference Proceedings 2017年第1期1863卷

作者： R. Kozera A. Prokopenya L. Noakes A. Śluzek 1Warsaw University of Life Sciences - SGGW Faculty of Applied Informatics and Mathematics Nowoursynowska str. 159 02-776 Warsaw Poland 4The University of Western Australia School of Computer Science and Software Engineering 35 Stirling Highway Crawley W.A. 6009 Perth Australia 2The University of Western Australia School of Mathematics and Statistics 35 Stirling Highway Crawley W.A. 6009 Perth Australia 3Khalifa University Department of Electrical and Computer Engineering PO Box 127788 Abu Dhabi United Arab Emirates

This paper discusses the ambiguous shape recovery in two-image photometric stereo for a Lambertian surface. The current uniqueness analysis refers to linearly independent light-source directions p = (0, 0, −1) and q arbitrary. For this case necessary and sufficient condition determining ambiguous reconstruction is governed by a second-order linear partial differential equation with constant coefficients. In contrast, a general position of both non-colinear illumination directions p and q leads to a highly non-linear PDE which raises a number of technical difficulties. As recently shown, the latter can also be handled for another family of orthogonal illuminations parallel to the OXZ-plane. For the special case of p = (0, 0, −1) a potential ambiguity stems also from the possible bifurcations of sub-local solutions glued together along a curve defined by an algebraic equation in terms of the data. This paper discusses the occurrence of similar bifurcations for such configurations of orthogonal light-source directions. The discussion to follow is supplemented with examples based on continuous reflectance map model and generated synthetic images.

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Topology Discovery of Hierarchical Ethernet LANs without SNMP support

Topology Discovery of Hierarchical Ethernet LANs without SNM...

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Annual Conference of the IEEE Industrial Electronics Society

作者： Krzysztof Nowicki Aleksander Malinowski Electronics Telecommunications and Informatics Gdansk University of Technology Electrical and Computer Engineering Bradley University

ISBN: (纸本)9781479917631

This paper presents an algorithm that allows for discovery of layer-2 hierarchical Ethernet network topology using agents running on selected end nodes. No SNMP, MIB, hardware, firmware, or operating system-level software modification is required. The method is based on transmission of customized Ethernet frames among installed software agents. It can be used to discover the topology of LAN or one VLAN segment as long as no MAC address filtering is employed. Sample implementation of the discussed algorithm is also proposed.

关键词： Ethernet LANs Layer-2 topology discovery Local Area Networks Ethernet networks topology SNMP Intelligent agents end node

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Editorial

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International Journal on Artificial Intelligence Tools 2015年第6期24卷

作者： Papadopoulos, Harris Andreou, Andreas S. Computer Science and Engineering Department Frederick University Pallouriotisa Nicosia Cyprus Department of Electrical Engineering/Computer Engineering and Informatics Cyprus University of Technology P. O. Box 50329 Limassol Cyprus

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Galactic transient sources with the Cherenkov Telescope Array Observatory

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Monthly Notices of the Royal Astronomical Society 2025年第1期540卷 205–238页

作者： Abe, K Abe, S Abhir, J Abhishek, A Acero, F Acharyya, A Adam, R Aguasca-Cabot, A Agudo, I Aguirre-Santaella, A Alfaro, J Alfaro, R Alvarez-Crespo, N Alves Batista, R Amans, J-P Amato, E Ambrosi, G Ambrosino, F Angüner, E O Antonelli, L A Aramo, C Arcaro, C Arnesen, T T H Asano, K Ascasibar, Y Aschersleben, J Ashkar, H Augusto Stuani, L Baack, D Backes, M Balazs, C Balbo, M Baquero Larriva, A Barbosa Martins, V Barres de Almeida, U Barrio, J A Barrios-Jiménez, L Batković, I Batzofin, R Baxter, J Becerra González, J Becker Tjus, J Belmont, R Benbow, W Bernete, J Bernlöhr, K Berti, A Bertucci, B Beshley, V Bhattacharjee, P Bhattacharyya, S Bigongiari, C Bissaldi, E Blanch, O Blazek, J Bocchino, F Boisson, C Bolmont, J Bonnoli, G Bonollo, A Bordas, P Bosnjak, Z Bottacini, E Böttcher, M Bradascio, F Bronzini, E Brown, A M Brunelli, G Bulgarelli, A Burelli, I Burger-Scheidlin, C Burmistrov, L Burton, M Buscemi, M Cailleux, J Campoy-Ordaz, A Cantlay, B K Capasso, G Caproni, A Capuzzo-Dolcetta, R Caraveo, P Caroff, S Carosi, A Carosi, R Carquin, E Carrasco, M-S Cascone, E Cassol, F Castaldini, L Castrejon, N Castro-Tirado, A J Cerasole, D Ceribella, G Cerruti, M Chadwick, P M Chaty, S Chen, A W Chernyakova, M Chiavassa, A Chudoba, J Chytka, L Cicciari, G M Cifuentes, A Coimbra Araujo, C H Colapietro, M Conforti, V Contreras, J L Cortina, J Costa, A Costantini, H Cotter, G Cristofari, P Cuevas, O Curtis-Ginsberg, Z D’Aì, A D’Amico, G D’Ammando, F Dai, S Dazzi, F de Bony de Lavergne, M De Caprio, V De Cesare, G De Frondat Laadim, F de Gouveia Dal Pino, E M De Lotto, B De Lucia, M de Martino, D de Menezes, R de Naurois, M de Ona Wilhelmi, E de Souza, V del Peral, L del Valle, M V Delgado, C Dell’aiera, M Della Valle, M della Volpe, D Depaoli, D Devin, J Di Girolamo, T Di Piano, A Di Pierro, F Di Tria, R Di Venere, L Diebold, S Dignam, C Dima, R Dinesh, A Djuvsland, J Dominik, R M Dominis Prester, D Donini, A Dorner, D Dörner, J Doro, M Dubos, C Ducci, L Dwarkadas, V V Ebr, J Eckner, C Egberts, K Einecke, S Elsässer, D Emery Department of Physics Tokai University 4-1-1 Kita-Kaname Hiratsuka Kanagawa 259-1292 Japan Institute for Cosmic Ray Research University of Tokyo 5-1-5 Kashiwa-no-ha Kashiwa Chiba 277-8582 Japan ETH Zürich Institute for Particle Physics and Astrophysics Otto-Stern-Weg 5 CH-8093 Zürich Switzerland INFN and Università degli Studi di Siena Dipartimento di Scienze Fisiche della Terra e dell’Ambiente (DSFTA) Sezione di Fisica Via Roma 56 I-53100 Siena Italy Université Paris-Saclay Université Paris Cité CEA CNRS AIM F-91191 Gif-sur-Yvette Cedex France FSLAC IRL 2009 CNRS/IAC E-38205 La Laguna Tenerife Spain University of Alabama Tuscaloosa Department of Physics and Astronomy Gallalee Hall Box 870324 Tuscaloosa AL 35487-0324 USA Université Côte d’Azur Observatoire de la Côte d’Azur CNRS Laboratoire Lagrange UF 06304 Nice France Laboratoire Leprince-Ringuet CNRS/IN2P3 École Polytechnique Institut Polytechnique de Paris F-91120 Palaiseau France Departament de Física Quàntica i Astrofísica Institut de Ciències del Cosmos Universitat de Barcelona IEEC-UB Martí i Franquès 1 E-08028 Barcelona Spain Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomía s/n E-18008 Granada Spain Institute for Computational Cosmology and Department of Physics Durham University South Road Durham DH1 3LE UK Pontificia Universidad Católica de Chile Av. Libertador Bernardo O’Higgins 340 8331150 Santiago Chile Universidad Nacional Autónoma de México Delegación Coyoacán 04510 Ciudad de México Mexico IPARCOS-UCM Instituto de Física de Partículas y del Cosmos and EMFTEL Department Universidad Complutense de Madrid E-28040 Madrid Spain Instituto de Física Teórica UAM/CSIC and Departamento de Física Teórica Universidad Autónoma de Madrid c/ Nicolás Cabrera 13-15 Campus de Cantoblanco UAM E-28049 Madrid Spain LUTH GEPI and LERMA Observatoire de Paris Université PSL Université Paris Cité CNRS 5 place Jules Janssen F-92190 Meudon France INAF – Osservatorio

A wide variety of Galactic sources show transient emission at soft and hard X-ray energies: low- and high-mass X-ray binaries containing compact objects, isolated neutron stars exhibiting extreme variability as magnetars as well as pulsar-wind nebulae. Although most of them can show emission up to MeV and/or GeV energies, many have not yet been detected in the TeV domain by Imaging Atmospheric Cherenkov Telescopes. In this paper, we explore the feasibility of detecting new Galactic transients with the Cherenkov Telescope Array Observatory (CTAO) and the prospects for studying them with Target of Opportunity observations. We show that CTAO will likely detect new sources in the TeV regime, such as the massive microquasars in the Cygnus region, low-mass X-ray binaries with low-viewing angle, flaring emission from the Crab pulsar-wind nebula or other novae explosions, among others. Since some of these sources could also exhibit emission at larger time-scales, we additionally test their detectability at longer exposures. We finally discuss the multiwavelength synergies with other instruments and large astronomical facilities.

关键词： binaries: general stars: magnetars novae cataclysmic variables pulsars: general gamma-rays: general

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Analysis of environmental measurements using variograms

Analysis of environmental measurements using variograms

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International Scientific Conference on Electric Power engineering (EPE)

作者： Obiora Sam Ezeora Jana Heckenbergerova Petr Musilek Faculty of Electrical Engineering and Informatics University of Pardubice Pardubice Czech Republic Department of Electrical and Computer Engineering University of Alberta Edmonton Alberta Canada

This contribution addresses the critical question of sampling rates used to measure variables of interest by cyberphysical and environmental monitoring systems. The data used in this analysis were measured and recorded in a Brazilian forest canopy between 2007 and 2014. Through variogram analysis time series of air temperature, humidity, soil moisture and photosynthetically active radiation, this study provides practical recommendation of minimal sampling rates for the selected environmental variables. The objective is to determine the optimal sampling frequency to maintain sufficient temporal resolution of collected environmental data while minimizing the energy consumption of environmental monitoring devices. In addition to the direct benefit of energy savings, proper design of sampling regimes can also improve reliability and reduce the life-cycle costs of operating environmental monitoring systems.

关键词： Temperature measurement Mathematical model Soil measurements Soil moisture Humidity Correlation Atmospheric modeling

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Applying data mining methods for the analysis of stable isotope data in bioarchaeology

Applying data mining methods for the analysis of stable isot...

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IEEE International Conference on e-Science and Grid Computing

作者： Markus Mauder Eirini Ntoutsi Peer Kröger Christoph Mayr Gisela Grupe Anita Toncala Stefan Hölzl Institute for Informatics Ludwig-Maximilians-Universität München Germany Faculty of Electrical Engineering and Computer Science Leibniz Universität Hannover Germany Institute for Geography Friedrich-Alexander Universität Erlangen-Nürnberg Germany Bio-Center Ludwig-Maximilians-Universität München Germany RiesKraterMuseum Nördlingen Germany

Data science methods have the potential to benefit other scientific fields by shedding new light on common questions. One such task is choosing good features for analysis. In this paper, we introduce a data science framework that was designed to allow domain experts to consider their domain knowledge in assembling suitable data sources for complex analyses. The structure of experimental data as represented by a clustering is used to measure the relevance as well as the redundancy of each feature. We present an application of this technique to bioarchaelogical data from a region in the European Alps, a transalpine passage of eminent archaeological importance in European prehistory, the Inn-Eisack-Adige passage, spanning Italy, Austria, and Germany. These results are applied to the task of provenance analysis. The application of the presented data mining technique leads to new insights which were not found using standard bioarchaeological approaches.

关键词： Data structures Feature extraction Data mining Isotopes Redundancy Electronic mail Indexes

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High-dynamic range compressive spectral imaging by adaptive filtering

High-dynamic range compressive spectral imaging by adaptive ...

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International Workshop on Compressed Sensing Theory and its Applications to Radar, Sonar and Remote Sensing (CoSeRa)

作者： Nelson Diaz Hoover Rueda Henry Arguello Deparment of Computer and Informatics Engineering Universidad Industrial de Santander Bucaramanga Colombia Department of Electrical and Computer Engineering University of Delaware Newark DE USA Department of Computer and Informatics Engineering Universidad Industrial de Santander Bucaramanga Colombia

Compressive hyperspectral imaging systems (CSI) capture the three-dimensional (3D) information of a scene by measuring two dimensional (2D) using a small set of coded focal plane array (FPA) compressive measurement. A reconstruction algorithm takes advantage of the compressive measurements sparsity to recover the 3D data cube. Traditionally, CASSI uses block-unblock coded apertures to spatially modulate the light, the modulation has binary entries. In CASSI the quality of the reconstructed images depends on the design of these coded apertures and the FPA saturation. This work presents a new CASSI architecture based on grayscaled coded apertures (GCA) which reduce the saturation and increase the dynamic range of the FPA detector. The set of codes is calculated in a realtime adaptive manner such that the FPA compressive measurements are used to determine the structure of the GCA. Simulations show the improvement in the quality of the reconstructed images of the architecture based on GCA.

关键词： Apertures Image reconstruction Image coding Modulation Detectors Dispersion Dynamic range

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Simple supercapacitor charging scheme in electrical car simulator by using direct current machines

Simple supercapacitor charging scheme in electrical car simu...

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International Conference on electrical engineering and informatics, ICEEI

作者： Adnan Rafi Al Tahtawi Arief Syaichu Rohman Laboratory of Control & Computer Systems School of Electrical Engineering and Informatics Institut Teknologi Bandung Bandung Jawa Barat ID Laboratory of Control & Computer Systems School of Electrical Engineering and Informatics Institut Teknologi Bandung Indonesia

Supercapacitors are electrical components which have a higher capacity of storing energy compared to a normal capacitor. It also has a quick charging and discharging time in comparison to other sources of electrical energy. Due to this advantage, supercapacitors are often used as an additional energy source in an electric car. During regenerative braking, the supercapacitor can be charged and hence store electrical energy more quickly. In this paper, a simple supercapacitor charging scheme was designed during the regenerative braking in an electric car. The designed charging scheme of supercapacitor is then implemented and tested in electric car simulator. The simulator was firstly built based on a previously published simulator known as Protodrive. The main components of the simulator are two direct current motors (DCMs) with a linked axis of rotation. The scheme is then tested in the simulator by using three profiles of a designed road, i.e. one hill, two hills and trapezoidal road's contour. The test result shows that the amount of supercapacitor charging current is proportional to the amount of road profile's slope angle.

关键词： Supercapacitors Roads Batteries Torque Wheels Force Mathematical model

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