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Observation of a Resonance in B+→K+μ+μ− Decays at Low Recoil

Physical Review Letters 2013年第11期111卷 112003-112003页

作者： R. Aaij B. Adeva M. Adinolfi C. Adrover A. Affolder Z. Ajaltouni J. Albrecht F. Alessio M. Alexander S. Ali G. Alkhazov P. Alvarez Cartelle A. A. Alves, Jr. S. Amato S. Amerio Y. Amhis L. Anderlini J. Anderson R. Andreassen J. E. Andrews R. B. Appleby O. Aquines Gutierrez F. Archilli A. Artamonov M. Artuso E. Aslanides G. Auriemma M. Baalouch S. Bachmann J. J. Back C. Baesso V. Balagura W. Baldini R. J. Barlow C. Barschel S. Barsuk W. Barter Th. Bauer A. Bay J. Beddow F. Bedeschi I. Bediaga S. Belogurov K. Belous I. Belyaev E. Ben-Haim G. Bencivenni S. Benson J. Benton A. Berezhnoy R. Bernet M.-O. Bettler M. van Beuzekom A. Bien S. Bifani T. Bird A. Bizzeti P. M. Bjørnstad T. Blake F. Blanc J. Blouw S. Blusk V. Bocci A. Bondar N. Bondar W. Bonivento S. Borghi A. Borgia T. J. V. Bowcock E. Bowen C. Bozzi T. Brambach J. van den Brand J. Bressieux D. Brett M. Britsch T. Britton N. H. Brook H. Brown I. Burducea A. Bursche G. Busetto J. Buytaert S. Cadeddu O. Callot M. Calvi M. Calvo Gomez A. Camboni P. Campana D. Campora Perez A. Carbone G. Carboni R. Cardinale A. Cardini H. Carranza-Mejia L. Carson K. Carvalho Akiba G. Casse L. Castillo Garcia M. Cattaneo Ch. Cauet R. Cenci M. Charles Ph. Charpentier P. Chen N. Chiapolini M. Chrzaszcz K. Ciba X. Cid Vidal G. Ciezarek P. E. L. Clarke M. Clemencic H. V. Cliff J. Closier C. Coca V. Coco J. Cogan E. Cogneras P. Collins A. Comerma-Montells A. Contu A. Cook M. Coombes S. Coquereau G. Corti B. Couturier G. A. Cowan E. Cowie D. C. Craik S. Cunliffe R. Currie C. D’Ambrosio P. David P. N. Y. David A. Davis I. De Bonis K. De Bruyn S. De Capua M. De Cian J. M. De Miranda L. De Paula W. De Silva P. De Simone D. Decamp M. Deckenhoff L. Del Buono N. Déléage D. Derkach O. Deschamps F. Dettori A. Di Canto H. Dijkstra M. Dogaru S. Donleavy F. Dordei A. Dosil Suárez D. Dossett A. Dovbnya F. Dupertuis P. Durante R. Dzhelyadin A. Dziurda A. Dzyuba S. Easo U. Egede V. Egorychev S. Eidelman D. van Eijk S. Eisenhardt U. Eitschberger R. Ekelhof L. Eklund I. El Rifai Ch. Elsasser A. Falabell Nikhef National Institute for Subatomic Physics Amsterdam The Netherlands Universidad de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Clermont Université Université Blaise Pascal CNRS/IN2P3 LPC Clermont-Ferrand France Fakultät Physik Technische Universität Dortmund Dortmund Germany European Organization for Nuclear Research (CERN) Geneva Switzerland School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Petersburg Nuclear Physics Institute (PNPI) Gatchina Russia Sezione INFN di Roma La Sapienza Roma Italy Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Sezione INFN di Padova Padova Italy LAL Université Paris-Sud CNRS/IN2P3 Orsay France Sezione INFN di Firenze Firenze Italy Physik-Institut Universität Zürich Zürich Switzerland University of Cincinnati Cincinnati Ohio United States University of Maryland College Park Maryland United States School of Physics and Astronomy University of Manchester Manchester United Kingdom Max-Planck-Institut für Kernphysik (MPIK) Heidelberg Germany Laboratori Nazionali dell’INFN di Frascati Frascati Italy Institute for High Energy Physics (IHEP) Protvino Russia Syracuse University Syracuse New York United States Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Department of Physics University of Warwick Coventry United Kingdom Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Rio de Janeiro Brazil associated to Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Institute of Theoretical and Experimental Physics (ITEP) Moscow Russia Sezione INFN di Ferrara Ferrara Italy Cavendish Laboratory University of Cambridge Cambridge United Kingdom Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausanne

A broad peaking structure is observed in the dimuon spectrum of B+→K+μ+μ− decays in the kinematic region where the kaon has a low recoil against the dimuon system. The structure is consistent with interference between the B+→K+μ+μ− decay and a resonance and has a statistical significance exceeding six standard deviations. The mean and width of the resonance are measured to be 4191−8+9 MeV/c2 and 65−16+22 MeV/c2, respectively, where the uncertainties include statistical and systematic contributions. These measurements are compatible with the properties of the ψ(4160) meson. First observations of both the decay B+→ψ(4160)K+ and the subsequent decay ψ(4160)→μ+μ− are reported. The resonant decay and the interference contribution make up 20% of the yield for dimuon masses above 3770 MeV/c2. This contribution is larger than theoretical estimates.

关键词： SPECTRUM analysis KINEMATICS KAONS QUANTUM interference RESONANCE

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Looking around with your brain in a virtual world

Looking around with your brain in a virtual world

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IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)

作者： Danny Plass-Oude Bos Matthieu Duvinage Oytun Oktay Jaime Delgado Saa Huseyin Guruler Ayhan Istanbullu Marijn van Vliet Bram van de Laar Mannes Poel Linsey Roijendijk Luca Tonin Ali Bahramisharif Boris Reuderink HMI group Faculty of EEMCS University of Twente Netherlands TCTS Laboratory Electrical Engineering University of Mons Belgium Electronics and Communications Corlu Engineering Namik Kemal Üniversitesi Turkey IEE Group of Robotics and Intelligent Systems Universidad del Norte Colombia Faculty of Engineering and Natural Sciences VPA Laboratory Sabanci University Turkey Department of Electronics and Computer Education Faculty of Technical Education Mugla University Turkey Faculty of Computer Engineering Balikesir University Turkey Donders Institute for Brain Cognition and Behaviour Radboud University Nijmegen Nijmegen Netherlands CNBI École Polytechnique Fédérale de Lausanne Switzerland Institute for Computing and Information Sciences Radboud University Nijmegen Nijmegen Netherlands

Offline analysis pipelines have been developed and evaluated for the detection of covert attention from electroen-cephalography recordings, and the detection of overt attention in terms of eye movement based on electrooculographic measurements. Some additional analysis were done in order to prepare the pipelines for use in a real-time system. This real-time system and a game application in which these pipelines are to be used were implemented. The game is set in a virtual environment where player is a wildlife photographer on an uninhabited island. Overt attention is used to adjust the angle of the first person camera, when the player is tracking animals. When making a photograph, the animal will flee when it notices it is looked at directly, so covert attention is required to get a good shot. Future work will entail user tests with this system to evaluate usability, user experience, and characteristics of the signals related to overt and covert attention when used in such an immersive environment.

关键词： Pipelines Accuracy Electrooculography Electrodes Training Electroencephalography Games

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2D and 3D palmprint information and Hidden Markov Model for improved identification performance

2D and 3D palmprint information and Hidden Markov Model for ...

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International Conference on Intelligent systems Design and Applications (ISDA)

作者： Abdallah Meraoumia Salim Chitroub Ahmed Bouridane Signal and Image Processing Laboratory Electronics and Computer Science Faculty USTHB Algiers Algeria Department of Computer Science King Saudi University Riyadh Saudi Arabia School of Computing Engineering and Information Sciences Northumbria University Newcastle-upon-Tyne UK

Biometric systems based on a single source of information suffer from limitations such as the lack of uniqueness, non-universality of the chosen biometric trait, noisy data and spoof attacks. Multibiometrics are relatively new systems that overcome those problems. These systems fuse information from multiple biometric sources in order to achieve better identification performance. In this paper, 2D and 3D palmprint are integrated in order to construct an efficient multibiometric identification system based on matching score level fusion. For that, the texture information is characterized by the rotation invariant VARiance measures (VAR) and compressed using the Principal Components Analysis (PCA). Subsequently, we use the Hidden Markov Model (HMM) for modeling the feature vector of each palmprint. Finally, Log-likelihood scores are used for palmprint evaluation. The proposed scheme is tested and evaluated using PolyU 2D-3D palmprint database of 250 users. Our experimental results show the effectiveness and reliability of the proposed system, which brings high identification accuracy rate.

关键词： Three dimensional displays Vectors Hidden Markov models Feature extraction Principal component analysis Databases Reactive power

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A special-purpose embedded controller for an implantable spinal cord stimulation system

A special-purpose embedded controller for an implantable spi...

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Iranian Conference of Biomedical engineering (ICBME)

作者： Hajar Nikbakht Amir M. Sodagar Mahmood Seifouri Saeid Barati Research Laboratory for Integrated Circuits and Systems (ICAS) Faculty of ECE K. N. Toosi University of Technology Tehran Iran Electrical and Computer Engineering Department Shahid Rajaee Teacher Training University Tehran Iran Ecole Polytechnique de Montreal Montreal QUE Canada Electrical and Computer Engineering Department Shahid Rajaee Teacher Training University Tehran Iran

This paper reports on a special-purpose controller dedicated to an implantable spinal cord electrical stimulation (SCS) microsystem. The controller supports parallel biphasic stimulation pulses on 16 channels concurrently, and recording neural response on any one of the sites with 8 bits of resolution. Anodic and cathodic pulse amplitudes are programmable with 8 bits of resolution, while the timing of the pulses is controllable in the real time through the data packets receiving serially via a wireless link.

关键词： Electrical stimulation Educational institutions Synchronization Wireless communication Pain Spinal cord

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Characteristics of Finnish and Swedish intensive care nursing narratives: A comparative analysis to support the development of clinical language technologies

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Journal of Biomedical Semantics 2011年第3期2卷 1-11页

作者： Allvin, Helen Carlsson, Elin Dalianis, Hercules Danielsson-Ojala, Riitta Daudaravicius, Vidas Hassel, Martin Kokkinakis, Dimitrios Lundgrén-Laine, Heljä Nilsson, Gunnar H. Nytrø, Øystein Salanterä, Sanna Skeppstedt, Maria Suominen, Hanna Velupillai, Sumithra Stockholm University Department of Computer and Systems Sciences (DSV) Forum 100 Kista SE-164 40 Sweden University of Turku and Hospital District of Southwest Finland University of Turku Department of Nursing Science Turku FI-20014 Finland Vytautas Magnus University Faculty of Informatics S. Daukanto g. 27 (301-309) Kaunas LT-44249 Lithuania University of Gothenburg Department of Swedish Box 200 Gothenburg SE-405 30 Sweden Norwegian University of Science and Technology Department of Computer and Information Science Sem Sælands vei 7-9 Trondheim NO-7491 Norway College of Engineering and Computer Science NICTA Canberra Research Laboratory and Australian National University Locked Bag 8001 Canberra ACT-2601 Australia

Background: Free text is helpful for entering information into electronic health records, but reusing it is a challenge. The need for language technology for processing Finnish and Swedish healthcare text is therefore evident;however, Finnish and Swedish are linguistically very dissimilar. In this paper we present a comparison of characteristics in Finnish and Swedish free-text nursing narratives from intensive care. This creates a framework for characterising and comparing clinical text and lays the groundwork for developing clinical language technologies. Methods: Our material included daily nursing narratives from one intensive care unit in Finland and one in Sweden. Inclusion criteria for patients were an inpatient period of least five days and an age of at least 16 years. We performed a comparative analysis as part of a collaborative effort between Finnish- and Swedish-speaking healthcare and language technology professionals that included both qualitative and quantitative aspects. The qualitative analysis addressed the content and structure of three average-sized health records from each country. In the quantitative analysis 514 Finnish and 379 Swedish health records were studied using various language technology tools. Results: Although the two languages are not closely related, nursing narratives in Finland and Sweden had many properties in common. Both made use of specialised jargon and their content was very similar. However, many of these characteristics were challenging regarding development of language technology to support producing and using clinical documentation. Conclusions: The way Finnish and Swedish intensive care nursing was documented, was not country or language dependent, but shared a common context, principles and structural features and even similar vocabulary elements. Technology solutions are therefore likely to be applicable to a wider range of natural languages, but they need linguistic tailoring. Availability: The Finnish and Swedish

关键词： Technology Acceptance Model Clinical Information system Language Technology Swedish Data Content Accessibility

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Fusion of multispectral palmprint images for automatic person identification

Fusion of multispectral palmprint images for automatic perso...

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Electronics, Communications and Photonics Conference (SIECPC), Saudi International

作者： Abdallah Meraoumia Salim Chitroub Ahmed Bouridane Signal and Image Processing Laboratory Electronics and Computer Science Faculty Telecommunication Department University of Science and Technology of Houari Boumedienne Algiers Algeria School of Computing Engineering and Information Sciences Northumbria University Newcastle-upon-Tyne UK

Reliability and accuracy in personal identification system is a dominant concern to the security world. Biometric has gained much attention in this subject recently. Many types of personal identification systems have been developed, and palmprint identification is one of the emerging technologies. This paper presents a novel biometric technique to automatic personal identification system using multispectral palmprint technology. In this method, each of spectrum images are aligned and then used to extract palmprint features using 1D log-Gabor filter. These features are then examined for their individual and combined performances. Finally, the hamming distance is used for matching of palmprint features. The experimental results showed that the proposed method achieve an excellent identification rate and provide more security.

关键词： Feature extraction Databases Image fusion Discrete wavelet transforms Security Accuracy Hamming distance

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Modern geomorphological environment research during rapid urbanization in Shenzhen east coastal zone

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Journal of Geographical Sciences 2011年第2期21卷 372-384页

作者： GUO Wei LI Shuheng ZHU Dakui School of Human Settlements and Civil Engineering Xi'an Jiaotong University Xi'an 710049 China Department of Computer Sciences Xi'an Jiaotong University Xi'an 710049 China Department of Urban and Resources Sciences Northwest University Xi'an 710032 China Faculty of Environmental Sciences University of Waterloo Waterloo N2L3G1 Canada Key Laboratory of Coast & Island Development of Ministry of Education Nanjing University Nanjing 210093 China

The geomorphological environment is one of the most fundamental variables affecting the development of human society. The mission of geomorphological environment research is to explore the most basic environment and features of our Earth＇s surface morphology. The results can be applied to resource evaluation, environmental protection and reducing and preventing geological disasters. Thus, it can serve to help achieve sustainable development. This paper examines the Shenzhen east coastal zone as a case strongly influenced by urban expansion. We use modern geomorphological theory and methods, along with GIS and RS techniques, to reveal key characteristics of the geomorphological environment and landform classification. Furthermore, coastal ecosystem evaluation and regional resources sustainable utilization should be considered relative to the corresponding geomorphological environment. Based on this study, we conclude that modern geomorphological theory and methods, supported by ＂3S＂ techniques including GIS, RS and GPS, can play an important role in resolving the environment, resources and population problems as well as sustainable development challenges facing humankind at present.

关键词： Shenzhen geomorphological environment geographic information system remote sensing sustainable development

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Metadata in digital video repositories: An analysis on author-generated metadata

Metadata in digital video repositories: An analysis on autho...

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2010 International Conference on Information Society, i-Society 2010

作者： Dantas, Joana Socrates Silveira, Regina Melo Ruggiero, Wilson Vicente LARC-Laboratory of Computer Architecture and Networks Department of Computer and Digital System Engineering Escola Politécnica da Universidade São Paulo Brazil

ISBN: (纸本)9780956426338

The growth of digital content generation and its access by the general public have, for the past few years, promoted the importance of resources' metadata, and enhanced the debate on their generation and quality. The improvement of new technologies and users needs have led to new metadata generation practices, which include the author-generated metadata. By studying the current literature on the subject we analyzed the author-generated metadata quality used on a given IPTV service. From the results of this study we propose an alternative methodology for insertion of metadata by the service user, where an auto-complete engine is applied aiming to enhance the system's metadata quality. © 2010 i-Society.

关键词： Metadata

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Flexible-ICA algorithm for a reliable Iris recognition

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2011年 6990 LNCS卷 188-208页

作者： Bouraoui, Imen Chitroub, Salim Bouridane, Ahmed Signal and Image Processing Laboratory Electronics and Computer Science Faculty USTHB El - Alia Bab - Ezzouar P.O. Box 32 Algiers 16111 Algeria School of Computing Engineering and Information Sciences Northumbria University Pandon Building Newcastle upon Tyne United Kingdom Department of Computer Science King Saud University P.O. Box 2454 Riyadh 11451 Saudi Arabia

ISBN: (纸本)9783642237393

In many large scale biometric-based recognition problems, knowledge of the limiting capabilities of underlying recognition systems is constrained by a variety of factors including a choice of a source encoding technique, quality, complexity and variability of collected data. In this paper, we propose a novel iris recognition system based-on Independent Component Analysis (ICA) encoding technique, which captures both the second and higher-order statistics and projects the input data onto the basis vectors that are as statistically independent as possible. We apply Flexible-ICA algorithm in the framework of the natural gradient to extract efficient feature vectors by minimizing the mutual information of the output data. The experimental results carried on two different subsets of CASIA V3 iris database show that ICA reduces the processing time and the feature vector length. In addition, ICA has shown an encouraging performance which is comparable to the best iris recognition algorithms found in the literature. © 2011 Springer-Verlag Berlin Heidelberg.

关键词： Biometrics

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A new two level hierarchy structuring for node partitioning in ad hoc networks 10

A new two level hierarchy structuring for node partitioning ...

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25th Annual ACM Symposium on Applied Computing, SAC 2010

作者： Nacéra, Benaouda Hervé, Guyennet Ahmed, Hammad Mohammed, Mostefai Department of Computer Science Sétif Automatic Laboratory Faculty of Engineering Science Sétif Algeria Laboratory of Engineering Science University of Franche Comté Besancon France Department of Automatic Sétif Automatic Laboratory Faculty of Engineering Science Sétif Algeria

ISBN: (纸本)9781605586380

A big challenge in designing a distributed application is the partitioning which consists of optimizing the system component inter-communication. In this paper we introduce a new approach of Ad Hoc network group formation based on two level hierarchy structure: many groups with one leader per group at the first level and a super-leader for the whole network at the second one. We worked on the minimization of the communication between nodes by the choice of decent metrics in group formation as well as in leader and super-leader elections. Moreover the designed algorithm is validated by simulation results and then verified by model checking. In addition, a re-organization strategy and the principle of communication protocols will be presented. © 2010 ACM.

关键词： Ad hoc networks

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