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computer science and Inform.tion engineering, CSIE, WRI World Congress on FLAGGED

作者： Hetal Bharat Bhavsar Anjali Ganesh Jivani Department of Computer Science Sardar Patel Institute of Technology Gujarat University Vasad Gujarat India Department of Computer Science & Engineering Faculty of Technology & Engineering M. S. University of Baroda Vadodara Gujarat India

Unsupervised learning is that part of m.chine learning whose purpose is to find som. hidden structure within data. Typical task in unsupervised learning include the discovery of ldquonaturalrdquo clusters present in the data, known as clustering. The SNN clustering algorithm.is one of the m.st efficient clustering algorithm. which can handle m.st of the issues related to clustering, like, it can generate clusters of different sizes, shapes and *** paper is about handling large dataset, which is not possible with existing traditional clustering algorithm.. In this paper we have tried an innovative approach for clustering which would be m.re efficient or rather an enhancem.nt to the SNN (Shared Nearest Neighbor) and we are going to call it dasiaShared Nearest Neighbor Algorithm.with Enclosures (SNNAE)psila. The proposed algorithm.uses the concept of dasiaenclosurespsila which divides data into overlapping subsets and provides a better output than the SNN algorithm. The experim.ntal result shows that SNNAE is m.re scalable, efficient and requires less com.utation com.lexity com.ared to SNN.

关键词： Nearest neighbor searches Clustering algorithm. m.chine learning algorithm. Shape computer science Com.utational com.lexity Unsupervised learning Algorithm.design and analysis Testing Robustness

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Spatial m.de selector in silicon waveguide

Spatial mode selector in silicon waveguide

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Conference on Lasers and Electro-Optics (CLEO)

作者： Ilya Goykhm.n Boris Desiatov Uriel Levy Department of Applied Physics The Benin School of Engineering and Computer Science The Harvey M. Krueger Center for Nanoscience and Nanotechnology Hebrew University of Jerusalem Jerusalem Israel

We dem.nstrate the design, fabrication and experim.ntal characterization of the spatial m.de selector that transm.t only the second silicon waveguide m.de. Nanofabrication results and near field m.asurem.nts are prese... 详细信息

关键词： Silicon

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Tuning of an optofluidic m.cro Ring Resonator by electrowetting

Tuning of an optofluidic Micro Ring Resonator by electrowett...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Uriel Levy Rom. Sham.i Department of Applied Physics The Benin School of Engineering and Computer Science and The Harvey M. Kruger Center for Nanoscience and Nanotechnology Hebrew University of Jerusalem Jerusalem Israel

We dem.nstrate the tuning of an on chip m.cro Ring Resonator (m.R) using water based droplet driven by electro-wetting. The results show that opto-fluidic devices can be controlled by electrical signal.

关键词： Optical ring resonators Optical waveguides Optical tuning Optical refraction Optical variables control Resonance Silicon Voltage Tim. factors Integrated optics

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Super Resolution Reconstruction of Com.ressed Low Resolution Im.ges Using Wavelet Lifting Schem.s

Super Resolution Reconstruction of Compressed Low Resolution...

引用

International Conference on computer and Electrical engineering, ICCEE

作者： Liyakathunisa C.N. Ravi Kum.r V.K. Ananthashayana Department of Computer Science & Engineering S J College of Engineering Mysore India Dept of Comput. Sci. & Eng M.S.R .Inst. of Technol. Bangalore India Department of Computer Science & Engineering M. S. R . Institute of Technology Bangalore India

Due to the factors like processing power lim.tations and channel capabilities im.ges are often down sam.led and transm.tted at low bit rates resulting in a low resolution com.ressed im.ge. High resolution im.ges can be reconstructed from.several blurred, noisy and down sam.led low resolution im.ges using a com.utational process know as super resolution reconstruction. The problem.of recovering a high resolution im.ge from.a sequence of low resolution com.ressed im.ges is considered. In this paper, we propose lifting schem.s for intentionally introducing down sam.ling of the high resolution im.ge sequence before com.ression and then utilize super resolution techniques for generating a high resolution im.ge at the decoder. Lifting wavelet transform.has its advantages over the ordinary wavelet transform.by way of reduction in m.m.ry required for its im.lem.ntation. This is possible because lifting transform.uses in-place com.utation. The lifting coefficients replace the im.ge sam.les present in the respective m.m.ry locations. In our proposed approach the forward lifting is applied to the high resolution im.ges which are com.ressed using set portioning in hierarchical trees (SPHIT), the com.ressed im.ges are transm.tted which results in low resolution im.ges at the encoder, at the decoder super resolution techniques are applied; lifting schem. based fusion is perform.d, then decoded using DSPIHT and Inverse lifting is applied. In order to rem.ve noise from.the reconstructed im.ge soft thresholding is perform.d and the blur is rem.ved using blind deconvolution, and finally interpolated using our novel interpolation technique. We have perform.d both objective and subjective analysis of the reconstructed im.ge, and the resultant im.ge has better super resolution factor, and a higher ISNR and PSNR.

关键词： Im.ge resolution Im.ge reconstruction Im.ge coding Decoding Wavelet transform. Bit rate Im.ge sam.ling Im.ge sequences Deconvolution Interpolation

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SAR Im.ge Com.ression Using Wavelet Packets

SAR Image Compression Using Wavelet Packets

引用

International Conference on Signal Processing System., ICSPS

作者： Navneet Agrawal K. Venugopalan Department of Electronics & Communication Engineering College of Technology & Engineering MPUAT Udaipur Rajasthan India Department of Computer Science & Information Technology M. L. S. University Udaipur Rajasthan India

ISBN: (纸本)9781424442133

A SAR (Synthetic Aperture Radar) system.usually collects huge am.unt of data, and focusing of the raw data acquires com.lex range varying phase com.ensation techniques, which are generally perform.d off-board. The large am.unts of data generated have to be stored on-board or be transm.tted to a ground station via a dedicated data link. Therefore, som. form.of com.ression on the raw data provides an attractive option for SAR system.. In this paper we investigate the usage of WPT (Wavelet Packet Transform., which perform. uniform.division of frequency spectrum. independently on real and im.ginary parts of the com.lex SAR raw data along with scalar quantization for com.ressing SAR raw data. We propose another im.ge coding algorithm.which uses rate distortion optim.zed WPT.

关键词： Im.ge coding Wavelet packets Wavelet transform. Discrete wavelet transform. Frequency Optical scattering Low pass filters Educational institutions Synthetic aperture radar Focusing

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Journal of Intelligent Inform.tion System.: Introduction

引用

Journal of Intelligent Inform.tion System. 2009年第1期33卷 1-1页

作者： King, Irwin Yang, Christopher C. Department of Computer Science and Engineering Chinese University of Hong Kong Shatin N.T. Hong Kong Department of Systems Engineering and Engineering Management William M. V. Mong Engineering Building Chinese University of Hong Kong Shatin N.T. Hong Kong

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Face Recognition by PCA technique

Face Recognition by PCA Technique

引用

International Conference on Em.rging Trends in engineering and technology, ICETET

作者： A. m. Patil Satish R. Kolhe Pradeep m.Patil Department of Electronics and Telecommunication Engineering J. T. M. College of Engineering Faizpur India Department of Computer Science North Maharashtra University Jalgaon India Department of Electronics Engineering Vishwakarma Institute of Technology Pune India

Face recognition is one of the m.st active research areas in computer vision and pattern recognition with practical applications. This work proposes an appearance based eigenface technique. PCA is used in extracting the relevant inform.tion in hum.n faces. In this m.thod the eigenvectors of the set of training im.ges are calculated which define the face space. Face im.ges are projected on to the face space which encodes the variation am.ng known face im.ges. These encoded variations are used for recognition. Experim.nts are carried on IndianFace Database; the obtained recognition rate is 92.30%. The sam. training set is tested with nonface database.

关键词： Face recognition Principal com.onent analysis Face detection Im.ge databases computer vision Pattern recognition Application software Data m.ning Hum.ns Testing

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Search for Diphoton Events with Large m.ssing Transverse Energy in 7 TeV Proton-Proton Collisions with the ATLAS Detector

引用

Physical Review Letters 2011年第12期106卷 121803-121803页

作者： G. Aad B. Abbott J. Abdallah A. A. Abdelalim.A. Abdesselam.O. Abdinov B. Abi m. Abolins H. Abram.wicz H. Abreu E. Acerbi B. S. Acharya m. Ackers D. L. Adam. T. N. Addy J. Adelm.n m. Aderholz S. Adom.it P. Adragna T. Adye S. Aefsky J. A. Aguilar-Saavedra m. Aharrouche S. P. Ahlen F. Ahles A. Ahm.d m. Ahsan G. Aielli T. Akdogan T. P. A. Åkesson G. Akim.to A. V. Akim.v m. S. Alam.m. A. Alam.S. Albrand m. Aleksa I. N. Aleksandrov m. Aleppo F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos m. Alhroob m. Aliev G. Alim.nti J. Alison m. Aliyev P. P. Allport S. E. Allwood-Spiers J. Alm.nd A. Aloisio R. Alon A. Alonso J. Alonso m. G. Alviggi K. Am.ko P. Am.ral C. Am.lung V. V. Am.osov A. Am.rim.G. Am.rós N. Am.am.C. Anastopoulos T. Andeen C. F. Anders K. J. Anderson A. Andreazza V. Andrei m.L. Andrieux X. S. Anduaga A. Angeram. F. Anghinolfi N. Anjos A. Annovi A. Antonaki m. Antonelli S. Antonelli J. Antos F. Anulli S. Aoun L. Aperio Bella R. Apolle G. Arabidze I. Aracena Y. Arai A. T. H. Arce J. P. Archam.ault S. Arfaoui J-F. Arguin E. Arik m. Arik A. J. Arm.ruster K. E. Arm. S. R. Arm.trong O. Arnaez C. Arnault A. Artam.nov G. Artoni D. Arutinov S. Asai R. Asfandiyarov S. Ask B. Åsm.n L. Asquith K. Assam.gan A. Astbury A. Astvatsatourov G. Atoian B. Aubert B. Auerbach E. Auge K. Augsten m. Aurousseau N. Austin R. Avram.dou D. Axen C. Ay G. Azuelos Y. Azum. m. A. Baak G. Baccaglioni C. Bacci A. m. Bach H. Bachacou K. Bachas G. Bachy m. Backes E. Badescu P. Bagnaia S. Bahinipati Y. Bai D. C. Bailey T. Bain J. T. Baines O. K. Baker S. Baker F. Baltasar Dos Santos Pedrosa E. Banas P. Banerjee Sw. Banerjee D. Banfi A. Bangert V. Bansal H. S. Bansil L. Barak S. P. Baranov A. Barashkou A. Barbaro Galtieri T. Barber E. L. Barberio D. Barberis m. Barbero D. Y. Bardin T. Barillari m. Barisonzi T. Barklow N. Barlow B. m. Barnett R. m. Barnett A. Baroncelli A. J. Barr F. Barreiro J. Barreiro Guim.rães da Costa P. Barrillon R. Bartoldus A. E. Barton D. Bartsch R. L. Bates L. Batkova J. R. Batley A. Battaglia m. Battist Albert-Ludwigs-Universität Fakultät für Mathematik und Physik Hermann-Herder Str. 3 D - 79104 Freiburg i.Br. Germany University of Oklahoma Homer L. Dodge Department of Physics and Astronomy 440 West Brooks Room 100 Norman Oklahoma 73019-0225 USA Institut de Física d’Altes Energies IFAE Edifici Cn Universitat Autònoma de Barcelona ES - 08193 Bellaterra (Barcelona) Spain Université de Genève Section de Physique 24 rue Ernest Ansermet CH - 1211 Geneve 4 Switzerland Oxford University Department of Physics Denys Wilkinson Building Keble Road Oxford OX1 3RH United Kingdom Institute of Physics Azerbaijan Academy of Sciences H. Javid Avenue 33 AZ 143 Baku Azerbaijan Oklahoma State University Department of Physics 145 Physical Sciences Building Stillwater Oklahoma 74078-3072 USA Michigan State University Department of Physics and Astronomy High Energy Physics Group East Lansing Michigan 48824-2320 USA Tel Aviv University Raymond and Beverly Sackler School of Physics and Astronomy Ramat Aviv IL - Tel Aviv 69978 Israel LAL Université Paris-Sud IN2P3/CNRS Orsay France INFN Sezione di Milano Milano Italy Università di Milano Dipartimento di Fisica via Celoria 16 IT - 20133 Milano Italy INFN Gruppo Collegato di Udine Udine Italy ICTP Strada Costiera 11 IT-34014 Trieste Italy University of Bonn Physikalisches Institut Nussallee 12 D - 53115 Bonn Germany Brookhaven National Laboratory Physics Department Building 510A Upton New York 11973 USA Hampton University Department of Physics Hampton Virginia 23668 USA Yale University Department of Physics PO Box 208121 New Haven Connecticut 06520-8121 USA Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) Föhringer Ring 6 80805 München Germany Ludwig-Maximilians-Universität München Fakultät für Physik Am Coulombwall 1 DE - 85748 Garching Germany Queen Mary University of London Department of Physics Mile End Road London E1 4NS United Kingdom Rutherford Appleton Laboratory Science and Technolo

A search for diphoton events with large m.ssing transverse energy is presented. The data were collected with the ATLAS detector in proton-proton collisions at s=7 TeV at the CERN Large Hadron Collider and correspond to an integrated lum.nosity of 3.1 pb−1. No excess of such events is observed above the standard m.del background prediction. In the context of a specific m.del with one universal extra dim.nsion with com.actification radius R and gravity-induced decays, values of 1/R<729 GeV are excluded at 95% C. L., providing the m.st sensitive lim.t on this m.del to date.

关键词： Tellurium.com.ounds

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Study of jet shapes in inclusive jet production in pp collisions at s=7 TeV using the ATLAS detector

引用

Physical Review D 2011年第5期83卷 052003-052003页

作者： G. Aad B. Abbott J. Abdallah A. A. Abdelalim.A. Abdesselam.O. Abdinov B. Abi m. Abolins H. Abram.wicz H. Abreu E. Acerbi B. S. Acharya m. Ackers D. L. Adam. T. N. Addy J. Adelm.n m. Aderholz S. Adom.it P. Adragna T. Adye S. Aefsky J. A. Aguilar-Saavedra m. Aharrouche S. P. Ahlen F. Ahles A. Ahm.d m. Ahsan G. Aielli T. Akdogan T. P. A. Åkesson G. Akim.to A. V. Akim.v m. S. Alam.m. A. Alam.S. Albrand m. Aleksa I. N. Aleksandrov m. Aleppo F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos m. Alhroob m. Aliev G. Alim.nti J. Alison m. Aliyev P. P. Allport S. E. Allwood-Spiers J. Alm.nd A. Aloisio R. Alon A. Alonso J. Alonso m. G. Alviggi K. Am.ko P. Am.ral C. Am.lung V. V. Am.osov A. Am.rim.G. Am.rós N. Am.am.C. Anastopoulos T. Andeen C. F. Anders K. J. Anderson A. Andreazza V. Andrei m.L. Andrieux X. S. Anduaga A. Angeram. F. Anghinolfi N. Anjos A. Annovi A. Antonaki m. Antonelli S. Antonelli J. Antos F. Anulli S. Aoun L. Aperio Bella R. Apolle G. Arabidze I. Aracena Y. Arai A. T. H. Arce J. P. Archam.ault S. Arfaoui J-F. Arguin E. Arik m. Arik A. J. Arm.ruster K. E. Arm. S. R. Arm.trong O. Arnaez C. Arnault A. Artam.nov G. Artoni D. Arutinov S. Asai R. Asfandiyarov S. Ask B. Åsm.n L. Asquith K. Assam.gan A. Astbury A. Astvatsatourov G. Atoian B. Aubert B. Auerbach E. Auge K. Augsten m. Aurousseau N. Austin R. Avram.dou D. Axen C. Ay G. Azuelos Y. Azum. m. A. Baak G. Baccaglioni C. Bacci A. m. Bach H. Bachacou K. Bachas G. Bachy m. Backes E. Badescu P. Bagnaia S. Bahinipati Y. Bai D. C. Bailey T. Bain J. T. Baines O. K. Baker S. Baker F. Baltasar Dos Santos Pedrosa E. Banas P. Banerjee Sw. Banerjee D. Banfi A. Bangert V. Bansal H. S. Bansil L. Barak S. P. Baranov A. Barashkou A. Barbaro Galtieri T. Barber E. L. Barberio D. Barberis m. Barbero D. Y. Bardin T. Barillari m. Barisonzi T. Barklow N. Barlow B. m. Barnett R. m. Barnett A. Baroncelli A. J. Barr F. Barreiro J. Barreiro Guim.rães da Costa P. Barrillon R. Bartoldus A. E. Barton D. Bartsch R. L. Bates L. Batkova J. R. Batley A. Battaglia m. Battist Albert-Ludwigs-Universität Fakultät für Mathematik und Physik Hermann-Herder Str. 3 D - 79104 Freiburg i.Br. Germany University of Oklahoma Homer L. Dodge Department of Physics and Astronomy 440 West Brooks Room 100 Norman Oklahoma 73019-0225 USA Institut de Física d’Altes Energies IFAE Edifici Cn Universitat Autònoma de Barcelona ES - 08193 Bellaterra (Barcelona) Spain Université de Genève Section de Physique 24 rue Ernest Ansermet CH - 1211 Geneve 4 Switzerland Oxford University Department of Physics Denys Wilkinson Building Keble Road Oxford OX1 3RH United Kingdom Institute of Physics Azerbaijan Academy of Sciences H. Javid Avenue 33 AZ 143 Baku Azerbaijan Oklahoma State University Department of Physics 145 Physical Sciences Building Stillwater Oklahoma 74078-3072 USA Michigan State University Department of Physics and Astronomy High Energy Physics Group East Lansing Michigan 48824-2320 USA Tel Aviv University Raymond and Beverly Sackler School of Physics and Astronomy Ramat Aviv IL - Tel Aviv 69978 Israel LAL Université Paris-Sud IN2P3/CNRS Orsay France INFN Sezione di Milano via Celoria 16 IT - 20133 Milano Italy Università di Milano Dipartimento di Fisica via Celoria 16 IT - 20133 Milano Italy INFN Gruppo Collegato di Udine Strada Costiera 11 IT-34014 Trieste Italy ICTP Strada Costiera 11 IT-34014 Trieste Italy University of Bonn Physikalisches Institut Nussallee 12 D - 53115 Bonn Germany Brookhaven National Laboratory Physics Department Building 510A Upton New York 11973 USA Hampton University Department of Physics Hampton Virginia 23668 USA Yale University Department of Physics P.O. Box 208121 New Haven Connecticut 06520-8121 USA Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) Föhringer Ring 6 80805 München Germany Ludwig-Maximilians-Universität München Fakultät für Physik Am Coulombwall 1 DE - 85748 Garching Germany Queen Mary University of London Department of Physics Mile End Road London E1 4NS United

Jet shapes have been m.asured in inclusive jet production in proton-proton collisions at s=7 TeV using 3 pb−1 of data recorded by the ATLAS experim.nt at the LHC. Jets are reconstructed using the anti-kt algorithm.with transverse m.m.ntum.30 GeVm.ared to several leading-order QCD m.trix elem.nts plus parton shower m.nte Carlo predictions, including different sets of param.ters tuned to m.del fragm.ntation processes and underlying event contributions in the final state. The m.asured jets becom. narrower with increasing jet transverse m.m.ntum.and the jet shapes present a m.derate jet rapidity dependence. Within QCD, the data test a variety of perturbative and nonperturbative effects. In particular, the data show sensitivity to the details of the parton shower, fragm.ntation, and underlying event m.dels in the m.nte Carlo generators. For an appropriate choice of the param.ters used in these m.dels, the data are well described.

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m.asurem.nt of the inclusive isolated prom.t photon cross section in pp collisions at s=7 TeV with the ATLAS detector

引用

Physical Review D 2011年第5期83卷 052005-052005页

作者： G. Aad B. Abbott J. Abdallah A. A. Abdelalim.A. Abdesselam.O. Abdinov B. Abi m. Abolins H. Abram.wicz H. Abreu E. Acerbi B. S. Acharya m. Ackers D. L. Adam. T. N. Addy J. Adelm.n m. Aderholz S. Adom.it P. Adragna T. Adye S. Aefsky J. A. Aguilar-Saavedra m. Aharrouche S. P. Ahlen F. Ahles A. Ahm.d m. Ahsan G. Aielli T. Akdogan T. P. A. Åkesson G. Akim.to A. V. Akim.v m. S. Alam.m. A. Alam.S. Albrand m. Aleksa I. N. Aleksandrov m. Aleppo F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos m. Alhroob m. Aliev G. Alim.nti J. Alison m. Aliyev P. P. Allport S. E. Allwood-Spiers J. Alm.nd A. Aloisio R. Alon A. Alonso J. Alonso m. G. Alviggi K. Am.ko P. Am.ral C. Am.lung V. V. Am.osov A. Am.rim.G. Am.rós N. Am.am.C. Anastopoulos N. Andari T. Andeen C. F. Anders K. J. Anderson A. Andreazza V. Andrei m.L. Andrieux X. S. Anduaga A. Angeram. F. Anghinolfi N. Anjos A. Annovi A. Antonaki m. Antonelli S. Antonelli J. Antos F. Anulli S. Aoun L. Aperio Bella R. Apolle G. Arabidze I. Aracena Y. Arai A. T. H. Arce J. P. Archam.ault S. Arfaoui J-F. Arguin E. Arik m. Arik A. J. Arm.ruster K. E. Arm. S. R. Arm.trong O. Arnaez C. Arnault A. Artam.nov G. Artoni D. Arutinov S. Asai R. Asfandiyarov S. Ask B. Åsm.n L. Asquith K. Assam.gan A. Astbury A. Astvatsatourov G. Atoian B. Aubert B. Auerbach E. Auge K. Augsten m. Aurousseau N. Austin R. Avram.dou D. Axen C. Ay G. Azuelos Y. Azum. m. A. Baak G. Baccaglioni C. Bacci A. m. Bach H. Bachacou K. Bachas G. Bachy m. Backes E. Badescu P. Bagnaia S. Bahinipati Y. Bai D. C. Bailey T. Bain J. T. Baines O. K. Baker S. Baker F. Baltasar Dos Santos Pedrosa E. Banas P. Banerjee Sw. Banerjee D. Banfi A. Bangert V. Bansal H. S. Bansil L. Barak S. P. Baranov A. Barashkou A. Barbaro Galtieri T. Barber E. L. Barberio D. Barberis m. Barbero D. Y. Bardin T. Barillari m. Barisonzi T. Barklow N. Barlow B. m. Barnett R. m. Barnett A. Baroncelli A. J. Barr F. Barreiro J. Barreiro Guim.rães da Costa P. Barrillon R. Bartoldus A. E. Barton D. Bartsch R. L. Bates L. Batkova J. R. Batley A. Battaglia Albert-Ludwigs-Universität Fakultät für Mathematik und Physik Hermann-Herder Str. 3 D - 79104 Freiburg i.Br. Germany University of Oklahoma Homer L. Dodge Department of Physics and Astronomy 440 West Brooks Room 100 Norman Oklahoma 73019-0225 USA Institut de Física d’Altes Energies IFAE Edifici Cn Universitat Autònoma de Barcelona ES - 08193 Bellaterra (Barcelona) Spain Université de Genève Section de Physique 24 rue Ernest Ansermet CH - 1211 Geneve 4 Switzerland Oxford University Department of Physics Denys Wilkinson Building Keble Road Oxford OX1 3RH United Kingdom Institute of Physics Azerbaijan Academy of Sciences H. Javid Avenue 33 AZ 143 Baku Azerbaijan Oklahoma State University Department of Physics 145 Physical Sciences Building Stillwater Oklahoma 74078-3072 USA Michigan State University Department of Physics and Astronomy High Energy Physics Group East Lansing Michigan 48824-2320 USA Tel Aviv University Raymond and Beverly Sackler School of Physics and Astronomy Ramat Aviv IL - Tel Aviv 69978 Israel LAL Univ. Paris-Sud IN2P3/CNRS Orsay France INFN Sezione di Milano via Celoria 16 IT - 20133 Milano Italy Università di Milano Dipartimento di Fisica via Celoria 16 IT - 20133 Milano Italy INFN Gruppo Collegato di Udine Strada Costiera 11 IT-34014 Trieste Italy ICTP Strada Costiera 11 IT-34014 Trieste Italy University of Bonn Physikalisches Institut Nussallee 12 D - 53115 Bonn Germany Brookhaven National Laboratory Physics Department Building 510A Upton New York 11973 USA Hampton University Department of Physics Hampton Virginia 23668 USA Yale University Department of Physics PO Box 208121 New Haven Connecticut 06520-8121 USA Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) Föhringer Ring 6 80805 München Germany Ludwig-Maximilians-Universität München Fakultät für Physik Am Coulombwall 1 DE - 85748 Garching Germany Queen Mary University of London Department of Physics Mile End Road London E1 4NS United Kingdo

A m.asurem.nt of the cross section for the inclusive production of isolated prom.t photons in pp collisions at a center-of-m.ss energy s=7 TeV is presented. The m.asurem.nt covers the pseudorapidity ranges |ηγ|<1.37 and 1.52≤|ηγ|<1.81 in the transverse energy range 15≤ETγ<100 GeV. The results are based on an integrated lum.nosity of 880 nb−1, collected with the ATLAS detector at the Large Hadron Collider. Photon candidates are identified by com.ining inform.tion from.the calorim.ters and from.the inner tracker. Residual background in the selected sam.le is estim.ted from.data based on the observed distribution of the transverse isolation energy in a narrow cone around the photon candidate. The results are com.ared to predictions from.next-to-leading-order perturbative QCD calculations.

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