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TCD-DCU at log CLEF 2009: An analysis of queries, actions, and interface languages

TCD-DCU at log CLEF 2009: An analysis of queries, actions, a...

2009 Cross Language Evaluation Forum Workshop, CLEF 2009, co-located with the 13th European Conference on Digital Libraries, ECDL 2009

作者： Ghorab, M. Rami Leveling, Johannes Zhou, Dong Jones, Gareth J. F. Wade, Vincent Centre for Next Generation Localisation Knowledge and Data Engineering Group Trinity College Dublin I-Dublin 2 Ireland Centre for Next Generation Localisation School of Computing Dublin City University I-Dublin 9 Ireland

This paper describes the collaborative participation of Trinity College Dublin and Dublin City University in the Log Analysis for Digital Societies (LADS) task of LogCLEF 2009 track. An analysis of multilingual search logs was carried out with the objectives of investigating how users from different linguistic or cultural backgrounds behave in search, and how the discovery of patterns in user actions could be used for community identification. Our findings suggest that there is scope for further investigation of how search logs can be exploited to personalise and improve cross-language search as well as improve the TEL search system.

关键词： Digital libraries

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Efficient mining of distance-based subspace clusters

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Statistical Analysis and data Mining 2009年第5-6期2卷 427-444页

作者： Liu, Guimei Sim, Kelvin Li, Jinyan Wong, Limsoon School of Computing National University of Singapore Singapore Data Mining Department Institute for Infocomm Research Singapore School of Computer Engineering Nanyang Technological University Singapore

Traditional similarity measurements often become meaningless when dimensions of datasets increase. Subspace clustering has been proposed to find clusters embedded in subspaces of high-dimensional datasets. Many existing algorithms use a grid-based approach to partition the data space into nonoverlapping rectangle cells, and then identify connected dense cells as clusters. The rigid boundaries of the grid-based approach may cause a real cluster to be divided into several small clusters. In this paper, we propose to use a sliding-window approach to partition the dimensions to preserve significant clusters. We call this model nCluster model. The sliding-window approach generates more bins than the grid-based approach, thus it incurs higher mining cost. We develop a deterministic algorithm, called MaxnCluster, to mine nClusters efficiently. MaxnCluster uses several techniques to speed up the mining, and it produces only maximal nClusters to reduce result size. Non-maximal nClusters are pruned without the need of storing the discovered nClusters in the memory, which is key to the efficiency of MaxnCluster. Our experiment results show that (i) the nCluster model can indeed preserve clusters that are shattered by the grid-based approach on synthetic datasets;(ii) the nCluster model produces more significant clusters than the grid-based approach on two real gene expression datasets and (iii) MaxnCluster is efficient in mining maximal nClusters. © 2009 Wiley Periodicals, Inc.

关键词： Clustering algorithms

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Web Service Integration for Next Generation Localisation

Web Service Integration for Next Generation Localisation

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2009 Workshop on Software engineering, Testing, and Quality Assurance for Natural Language Processing, SETQA-NLP 2009

作者： Lewis, David Curran, Stephen Feeney, Kevin Etzioni, Zohar Keeney, John Way, Andy Schäler, Reinhard Centre for Next Generation Localisation Knowledge and Data Engineering Group Trinity College Dublin Ireland Centre for Next Generation Localisation School of Computing Dublin City Universit Y Ireland Centre for Next Generation Localisation Centre for Localisation Research University of Limerick Ireland

ISBN: (纸本)9781932432329

Developments in Natural Language Processing technologies promise a variety of benefits to the localization industry, both in its current form in performing bulk enterprise-based localization and in the future in supporting personalized web-based localization on increasingly user-generated content. As an increasing variety of natural language processing services become available, it is vital that the localization industry employs the flexible software integration techniques that will enable it to make best use of these technologies. To date however, the localization industry has been slow reap the benefits of modern integration technologies such as web service integration and orchestration. Based on recent integration experiences, we examine how the localization industry can best exploit web-based integration technologies in developing new services and exploring new business models. © 2009 Association for Computational Linguistics.

关键词： Web services

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Asymmetric group key agreement

Asymmetric group key agreement

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28th Annual International Conference on the Theory and Applications of Cryptographic Techniques, EUROCRYPT 2009

作者： Qianhong, Wu Yi, Mu Susilo, Willy Bo, Qin Domingo-Ferrer, Josep Universitat Rovira i Virgili Dept. of Comp. Eng. and Maths UNESCO Department of Data Privacy Tarragona Catalonia Spain Key Lab. of Aerospace Information Security and Trusted Computing School of Computer Wuhan University China Centre for Computer and Information Security Research School of Computer Science and Software Engineering University of Wollongong Australia Dept. of Maths School of Science Xi'an University of Technology China

ISBN: (纸本)3642010008

A group key agreement (GKA) protocol allows a set of users to establish a common secret via open networks. Observing that a major goal of GKAs for most applications is to establish a confiDential channel among group members, we revisit the group key agreement definition and distinguish the conventional (symmetric) group key agreement from asymmetric group key agreement (ASGKA) protocols. Instead of a common secret key, only a shared encryption key is negotiated in an ASGKA protocol. This encryption key is accessible to attackers and corresponds to different decryption keys, each of which is only computable by one group member. We propose a generic construction of one-round ASGKAs based on a new primitive referred to as aggregatable signaturebased broadcast (ASBB), in which the public key can be simultaneously used to verify signatures and encrypt messages while any signature can be used to decrypt ciphertexts under this public key. Using bilinear pairings, we realize an efficient ASBB scheme equippe d with useful properties. Following the generic construction, we instantiate a one-round ASGKA protocol tightly reduced to the decision Bilinear Diffie-Hellman Exponentiation (BDHE) assumption in the standard model. © International Association for Cryptologic Research 2009.

关键词： Public key cryptography

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Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope

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Physical Review Letters 2011年第24期107卷 241302-241302页

作者： M. Ackermann M. Ajello A. Albert W. B. Atwood L. Baldini J. Ballet G. Barbiellini D. Bastieri K. Bechtol R. Bellazzini B. Berenji R. D. Blandford E. D. Bloom E. Bonamente A. W. Borgland J. Bregeon M. Brigida P. Bruel R. Buehler T. H. Burnett S. Buson G. A. Caliandro R. A. Cameron B. Cañadas P. A. Caraveo J. M. Casandjian C. Cecchi E. Charles A. Chekhtman J. Chiang S. Ciprini R. Claus J. Cohen-Tanugi J. Conrad S. Cutini A. de Angelis F. de Palma C. D. Dermer S. W. Digel E. do Couto e Silva P. S. Drell A. Drlica-Wagner L. Falletti C. Favuzzi S. J. Fegan E. C. Ferrara Y. Fukazawa S. Funk P. Fusco F. Gargano D. Gasparrini N. Gehrels S. Germani N. Giglietto F. Giordano M. Giroletti T. Glanzman G. Godfrey I. A. Grenier S. Guiriec M. Gustafsson D. Hadasch M. Hayashida E. Hays R. E. Hughes T. E. Jeltema G. Jóhannesson R. P. Johnson A. S. Johnson T. Kamae H. Katagiri J. Kataoka J. Knödlseder M. Kuss J. Lande L. Latronico A. M. Lionetto M. Llena Garde F. Longo F. Loparco B. Lott M. N. Lovellette P. Lubrano G. M. Madejski M. N. Mazziotta J. E. McEnery J. Mehault P. F. Michelson W. Mitthumsiri T. Mizuno C. Monte M. E. Monzani A. Morselli I. V. Moskalenko S. Murgia M. Naumann-Godo J. P. Norris E. Nuss T. Ohsugi A. Okumura N. Omodei E. Orlando J. F. Ormes M. Ozaki D. Paneque D. Parent M. Pesce-Rollins M. Pierbattista F. Piron G. Pivato T. A. Porter S. Profumo S. Rainò M. Razzano A. Reimer O. Reimer S. Ritz M. Roth H. F.-W. Sadrozinski C. Sbarra J. D. Scargle T. L. Schalk C. Sgrò E. J. Siskind G. Spandre P. Spinelli L. Strigari D. J. Suson H. Tajima H. Takahashi T. Tanaka J. G. Thayer J. B. Thayer D. J. Thompson L. Tibaldo M. Tinivella D. F. Torres E. Troja Y. Uchiyama J. Vandenbroucke V. Vasileiou G. Vianello V. Vitale A. P. Waite P. Wang B. L. Winer K. S. Wood M. Wood Z. Yang S. Zimmer M. Kaplinghat G. D. Martinez W. W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford California 94305 USA Department of Physics Center for Cosmology and Astro-Particle Physics The Ohio State University Columbus Ohio 43210 USA Santa Cruz Institute for Particle Physics Department of Physics and Department of Astronomy and Astrophysics University of California at Santa Cruz Santa Cruz California 95064 USA Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Laboratoire AIM CEA-IRFU/CNRS/Université Paris Diderot Service d’Astrophysique CEA Saclay 91191 Gif sur Yvette France Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica “G. Galilei ” Università di Padova I-35131 Padova Italy Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartimento di Fisica Università degli Studi di Perugia I-06123 Perugia Italy Dipartimento di Fisica “M. Merlin” dell’Università e del Politecnico di Bari I-70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari 70126 Bari Italy Laboratoire Leprince-Ringuet École polytechnique CNRS/IN2P3 Palaiseau France Department of Physics University of Washington Seattle Washington 98195-1560 USA Institut de Ciències de l’Espai (IEEE-CSIC) Campus UAB 08193 Barcelona Spain Istituto Nazionale di Fisica Nucleare Sezione di Roma “Tor Vergata” I-00133 Roma Italy Dipartimento di Fisica Università di Roma “Tor Vergata” I-00133 Roma Italy INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica I-20133 Milano Italy Artep Inc. 2922 Excelsior Springs Court Ellicott City Maryland 21042 USA ASI Science Data Center I-00044 Frascati (Roma) Italy Laboratoire Univers et Particules de Montpell

Satellite galaxies of the Milky Way are among the most promising targets for dark matter searches in gamma rays. We present a search for dark matter consisting of weakly interacting massive particles, applying a joint likelihood analysis to 10 satellite galaxies with 24 months of data of the Fermi Large Area Telescope. No dark matter signal is detected. Including the uncertainty in the dark matter distribution, robust upper limits are placed on dark matter annihilation cross sections. The 95% confidence level upper limits range from about 10−26 cm3 s−1 at 5 GeV to about 5×10−23 cm3 s−1 at 1 TeV, depending on the dark matter annihilation final state. For the first time, using gamma rays, we are able to rule out models with the most generic cross section (∼3×10−26 cm3 s−1 for a purely s-wave cross section), without assuming additional boost factors.

关键词： MILKY Way ARTIFICIAL satellites DARK matter (Astronomy) GAMMA rays TELESCOPES

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Exact step-coupling theory for mode-coupling behavior in geometrical variation photonic crystal waveguides

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Physical Review B 2009年第3期80卷 035101-035101页

作者： E. H. Khoo A. Q. Liu X. M. Zhang E. P. Li J. Li D. Pinjala B. S. Luk’yanchuk School of Electrical and Electronic Engineering Nanyang Technological University Nanyang Avenue Singapore 639798 Singapore Institute of High Performance Computing 1 Fusionopolis Way Connexis Singapore 138632 Singapore Institute of Microelectronics 11 Science Park Road Singapore 117685 Singapore Data Storage Institute DSI Building 5 Engineering Drive 1 Singapore 117608 Singapore

In this paper, an exact step-coupling theory is developed to describe the modes coupling behavior and lightwaves propagation for the power exchange between the waveguide modes in geometrical variation photonic crystal waveguide. The exact step-coupling theory provides a general description of the mode-coupling mechanism for light waveguide with geometrical variation with complete set of equations and solutions. The coupling equations of the exact step theory are derived and compared with the scattering matrix method, where simulation results show good agreement with an error of less than 2.2%. Subsequently, the coupling equations are applied to different case studies such as slab tapered waveguide and lossy “turn-on” waveguide. The transmission spectrum and field pattern distribution show that the lossy waveguide has a large radiation loss with an average transmission efficiency of less than 5%. The slab tapered waveguide can have more than 90% transmission efficiency with the convex curvature. The exact step-coupling theory can be applied to a vast range of geometrical variation photonic crystal based waveguides and it has quick and accurate convergence simulation results.

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Study on Multilocus Interactions for Hypertension by an Information Theoretic Method

Study on Multilocus Interactions for Hypertension by an Info...

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第三届最优化与系统生物学国际研讨会

作者： Junhua Zhang Wentao Huang Zhiyuan Zhao Biao Li Yuelan Wang Dongfeng Gu Guoying Li Runsheng Chen Academy of Mathematics and Systems Science CAS Key Laboratory of Random Complex Structures and Data Science Academy of Mathematics and Systems ScienceCAS College of Electronics and Information Engineering South-Central University for Nationalities Actuarial Department China Life Insurance Company Limited School of Informatics and Computing Indiana UniversityBloomingtonIndianaUSA

Hypertension,among diabetes,obesity and others,is one of the common human diseases that is genetically expressed as complex traits to which genetic,environmental,and demographic factors contribute *** the underlying genes and examining their interactions, a crucial step in understanding the molecular pathogenesis of complex diseases,is both a statistical and a computational challenge,stressing the need for novel strategies to move this process *** this paper we propose a new method to study the association of multiple gene interactions for complex *** method is carried out by two ***,we sequentially select additionally associated SNP loci combinations by minimizing the p-value of a test based on an information measure,measure of information ***,this approach is called MID ***,the significance of the selected associated loci combinations is assessed by an x *** MID method is model-free and nonparametric,it is easy to compute and *** capability of the MID method is confirmed by applying it to investigate the multiple gene interactions on risk of hypertension in northern Han Chinese,where thirty-three SNP loci with three-genotype in eleven candidate genes are *** results are consistent with those of Gu et al（2006）.Additionally,we get some other new *** indicates that our idea is indeed feasible and useful in practice.

关键词： Hypertension SNP locus multilocus interactions measure of information discrepancy

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Acquisition, analysis and distribution of real-time multi-sensor satellite data, in a high performance computing environment, for disaster mitigation applications: Case studies from the NATO science for peace funded Kamal Ewida Earth Observatory in Egypt, the Electronic Geophysical Year (eGY)-Africa and the US Geological Survey supported AmericaView

Acquisition, analysis and distribution of real-time multi-se...

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IEEE SENSORS

作者： Gilbert L. Rochon Bereket Araya Larry L. Biehl Darion Grant Okan Ersoy Joseph Quansah Gulay Altay M. Magdy Abdel Wahab Gamal Salah El Afandi Tarek El Ghazawi Mohamed A. Mohamed Mohammed Shokr Happy Sithole Purdue Terrestrial Observatory Purdue University West Lafayette IN USA School of Electrical & Computer Engineering Purdue University West Lafayette Indiana USA Department of Agricultural & Biological Engineering Purdue University W. Lafayette Indiana USA Kandilli Observatory & Earthquake Research Institute Boaziçi University Istanbul Turkey Dept. of Meteorology & Astronomy Cairo University Giza Cairo Egypt Dept. of Astronomy & Meteorology Al Azhar University Nasr City Cairo Egypt Dept. of Electrical & Computer Engineering George Washington University Washington DC USA ChiefGIS Officer United Nations Department of Peacekeeping Operations (DPKO) N'Djamena Chad Environment Canada Data Assimilation & Satellite Meteorology Research Toronto Ontario Canada Center for High Performance Computing (CHPC) Cape Town South Africa

The paper presents an implementation of the current state-of-the-art, with respect to acquisition, analysis and distribution of real-time remotely sensed data from multiple polar orbiting and geostationary earth observing satellite sensors, deploying high performance computing for time-critical disaster mitigation applications. The authors also describe the prototype Kamal Ewida Earth Observatory (KEEO), now under development at Cairo University and at Al Azhar University in Egypt, as a technological exemplar of indigenous expertise, real-time remote sensing, near-real-time spatial data products, supercomputer access from Egypt's space agency-NARSS, partnerships with multi-lateral agencies (e.g. UN WHO, Electronic Geophysical Year (eGY)-Africa), sensor data archives from the United States Geological Survey (USGS)-supported AmericaView, funding from NATO's Science for Peace Program and collaborative research with Bogaziçi University's Kandilli Observatory and Earthquake Research Institute (KOERI) in Istanbul, Turkey and with Purdue University's Rosen Center for Advanced computing's Purdue Terrestrial Observatory (PTO) in West Lafayette, Indiana, USA.

关键词： Performance analysis Satellites High performance computing Observatories Earth Space technology Geophysics computing Time factors Prototypes Peace technology

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ERRATUM: 'THE FIRST FERMI LARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS' (2010, ApJS, 187, 460)

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The Astrophysical Journal Supplement Series 2011年第1期193卷

作者： A. A. Abdo M. Ackermann M. Ajello W. B. Atwood M. Axelsson L. Baldini J. Ballet G. Barbiellini M. G. Baring D. Bastieri B. M. Baughman K. Bechtol R. Bellazzini B. Berenji R. D. Blandford E.D. Bloom E. Bonamente A. W. Borgland J. Bregeon A. Brez M. Brigida P. Bruel T. H. Burnett S. Buson G. A. Caliandro R. A. Cameron F. Camilo P. A. Caraveo J. M. Casandjian C. Cecchi Ö. Çelik E. Charles A. Chekhtman C. C. Cheung J. Chiang S. Ciprini R. Claus I. Cognard J. Cohen-Tanugi L. R. Cominsky J. Conrad R. Corbet S. Cutini P. R. den Hartog C. D. Dermer A. de Angelis A. de Luca F. de Palma S. W. Digel M. Dormody E. do Couto e Silva P. S. Drell R. Dubois D. Dumora C. Espinoza C. Farnier C. Favuzzi S. J. Fegan E. C. Ferrara W. B. Focke P. Fortin M. Frailis P. C. C. Freire Y. Fukazawa S. Funk P. Fusco F. Gargano D. Gasparrini N. Gehrels S. Germani G. Giavitto B. Giebels N. Giglietto P. Giommi F. Giordano T. Glanzman G. Godfrey E. V. Gotthelf I. A. Grenier M.-H. Grondin J. E. Grove L. Guillemot S. Guiriec C. Gwon Y. Hanabata A. K. Harding M. Hayashida E. Hays R. E. Hughes M. S. Jackson G. Jóhannesson A. S. Johnson R. P. Johnson T. J. Johnson W. N. Johnson S. Johnston T. Kamae G. Kanbach V. M. Kaspi H. Katagiri J. Kataoka N. Kawai M. Kerr J. Knödlseder M. L. Kocian M. Kramer M. Kuss J. Lande L. Latronico M. Lemoine-Goumard M. Livingstone F. Longo F. Loparco B. Lott M. N. Lovellette P. Lubrano A. G. Lyne G. M. Madejski A. Makeev R. N. Manchester M. Marelli M. N. Mazziotta W. McConville J. E. McEnery S. McGlynn C. Meurer P. F. Michelson T. Mineo W. Mitthumsiri T. Mizuno A. A. Moiseev C. Monte M. E. Monzani A. Morselli I. V. Moskalenko S. Murgia T. Nakamori P. L. Nolan J. P. Norris A. Noutsos E. Nuss T. Ohsugi N. Omodei E. Orlando J. F. Ormes M. Ozaki D. Paneque J. H. Panetta D. Parent V. Pelassa M. Pepe M. Pesce-Rollins F. Piron T. A. Porter S. Rainò R. Rando S. M. Ransom P. S. Ray M. Razzano N. Rea A. Reimer O. Reimer T. Reposeur S. Ritz A. Y. Rodriguez R. W. Romani M. Roth F. Ryde H. F.-W. Sadrozinski D. Sanchez A. Sander P. M. Sa Space Science Division Naval Research Laboratory Washington DC 20375 USA National Research Council Research Associate National Academy of Sciences Washington DC 20001 USA W. W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford CA 94305 USA Santa Cruz Institute for Particle Physics Department of Physics and Department of Astronomy and Astrophysics University of California at Santa Cruz Santa Cruz CA 95064 USA Department of Astronomy Stockholm University SE-106 91 Stockholm Sweden The Oskar Klein Centre for Cosmoparticle Physics AlbaNova SE-106 91 Stockholm Sweden Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Laboratoire AIM CEA-IRFU/CNRS/Université Paris Diderot Service d'Astrophysique CEA Saclay 91191 Gif sur Yvette France Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Department of Physics and Astronomy Rice University MS-108 P.O. Box 1892 Houston TX 77251 USA Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica 'G. Galilei ' Università di Padova I-35131 Padova Italy Department of Physics Center for Cosmology and Astro-Particle Physics The Ohio State University Columbus OH 43210 USA Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartimento di Fisica Università degli Studi di Perugia I-06123 Perugia Italy Dipartimento di Fisica 'M. Merlin' dell'Università e del Politecnico di Bari I-70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari 70126 Bari Italy Laboratoire Leprince-Ringuet École polytechnique CNRS/IN2P3 Palaiseau France Department of Physics University of Washington Seattle WA 98195-1560 USA Columbia Astrophysics Laboratory Columbia University New York NY 10027 USA INAF-Isti

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Searches for cosmic-ray electron anisotropies with the Fermi Large Area Telescope

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Physical Review D 2010年第9期82卷 092003-092003页

作者： M. Ackermann M. Ajello W. B. Atwood L. Baldini J. Ballet G. Barbiellini D. Bastieri K. Bechtol R. Bellazzini B. Berenji E. D. Bloom E. Bonamente A. W. Borgland A. Bouvier J. Bregeon A. Brez M. Brigida P. Bruel R. Buehler T. H. Burnett S. Buson G. A. Caliandro R. A. Cameron P. A. Caraveo S. Carrigan J. M. Casandjian C. Cecchi Ö. Çelik E. Charles A. Chekhtman C. C. Cheung J. Chiang S. Ciprini R. Claus J. Cohen-Tanugi J. Conrad A. Cuoco C. D. Dermer A. de Angelis F. de Palma S. W. Digel G. Di Bernardo E. do Couto e Silva P. S. Drell R. Dubois C. Favuzzi S. J. Fegan W. B. Focke M. Frailis Y. Fukazawa S. Funk P. Fusco D. Gaggero F. Gargano S. Germani N. Giglietto P. Giommi F. Giordano M. Giroletti T. Glanzman G. Godfrey D. Grasso I. A. Grenier J. E. Grove S. Guiriec M. Gustafsson D. Hadasch A. K. Harding K. Hayashi E. Hays R. E. Hughes G. Jóhannesson A. S. Johnson W. N. Johnson T. Kamae H. Katagiri J. Kataoka M. Kerr J. Knödlseder M. Kuss J. Lande L. Latronico S.-H. Lee M. Lemoine-Goumard M. Llena Garde F. Longo F. Loparco M. N. Lovellette P. Lubrano A. Makeev M. N. Mazziotta J. E. McEnery J. Mehault P. F. Michelson T. Mizuno A. A. Moiseev C. Monte M. E. Monzani E. Moretti A. Morselli I. V. Moskalenko S. Murgia T. Nakamori M. Naumann-Godo P. L. Nolan E. Nuss T. Ohsugi A. Okumura N. Omodei E. Orlando J. F. Ormes D. Paneque J. H. Panetta D. Parent V. Pelassa M. Pepe M. Pesce-Rollins F. Piron T. A. Porter S. Profumo S. Rainò R. Rando M. Razzano A. Reimer O. Reimer T. Reposeur J. Ripken S. Ritz M. Roth H. F.-W. Sadrozinski A. Sander T. L. Schalk C. Sgrò J. Siegal-Gaskins E. J. Siskind D. A. Smith P. D. Smith G. Spandre P. Spinelli M. S. Strickman A. W. Strong D. J. Suson H. Takahashi T. Takahashi T. Tanaka J. B. Thayer J. G. Thayer D. J. Thompson L. Tibaldo D. F. Torres G. Tosti A. Tramacere Y. Uchiyama T. L. Usher J. Vandenbroucke V. Vasileiou N. Vilchez V. Vitale A. P. Waite P. Wang B. L. Winer K. S. Wood Z. Yang T. Ylinen G. Zaharijas M. Ziegler W. W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford California 94305 USA Santa Cruz Institute for Particle Physics Department of Physics and Department of Astronomy and Astrophysics University of California at Santa Cruz Santa Cruz California 95064 USA Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Laboratoire AIM CEA-IRFU/CNRS/Université Paris Diderot Service d’Astrophysique CEA Saclay 91191 Gif sur Yvette France Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica “G. Galilei ” Università di Padova I-35131 Padova Italy Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartimento di Fisica Università degli Studi di Perugia I-06123 Perugia Italy Dipartimento di Fisica “M. Merlin” dell’Università e del Politecnico di Bari I-70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari 70126 Bari Italy Laboratoire Leprince-Ringuet École polytechnique CNRS/IN2P3 Palaiseau France Department of Physics University of Washington Seattle Washington 98195-1560 USA Institut de Ciencies de l’Espai (IEEC-CSIC) Campus UAB 08193 Barcelona Spain INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica I-20133 Milano Italy NASA Goddard Space Flight Center Greenbelt Maryland 20771 USA Center for Research and Exploration in Space Science and Technology (CRESST) and NASA Goddard Space Flight Center Greenbelt Maryland 20771 USA Department of Physics and Center for Space Sciences and Technology University of Maryland Baltimore County Baltimore Maryland 21250 USA Space Science Division Naval Research Laboratory Washington D.C. 20375 USA George Mason University Fairfax Virgin

The Large Area Telescope on board the Fermi satellite (Fermi LAT) detected more than 1.6×106 cosmic-ray electrons/positrons with energies above 60 GeV during its first year of operation. The arrival directions of these events were searched for anisotropies of angular scale extending from ∼10° up to 90°, and of minimum energy extending from 60 GeV up to 480 GeV. Two independent techniques were used to search for anisotropies, both resulting in null results. Upper limits on the degree of the anisotropy were set that depended on the analyzed energy range and on the anisotropy’s angular scale. The upper limits for a dipole anisotropy ranged from ∼0.5% to ∼10%.

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