14,281 Hits in 6.1 sec

K+Λ and K+Σ0 photoproduction with fine center-of-mass energy resolution

T.C. Jude, D.I. Glazier, D.P. Watts, P. Aguar-Bartolomé, L.K. Akasoy, J.R.M. Annand, H.J. Arends, K. Bantawa, R. Beck, V.S. Bekrenev, H. Berghäuser, A. Braghieri (+60 others)
2014 Physics Letters B  
Measurements of γ p → K^+Λ and γ p → K^+Σ^0 cross-sections have been obtained with the photon tagging facility and the Crystal Ball calorimeter at MAMI-C.  ...  The new analyses disfavor a strong role for quark-diquark dynamics in the nucleon.  ...  This new K + identification technique enables K + detection without the need for large scale spectrometers or Cerenkov detectors and has wide applicability to other facilities.  ... 
doi:10.1016/j.physletb.2014.06.015 fatcat:jsge3ftjybevniuggzlxfh7dne

One-shot Classification of 2-D Leaf Shapes Using Distributed Hierarchical Graph Neuron (DHGN) Scheme with k-NN Classifier

Anang Hudaya Muhamad Amin, Asad I. Khan
2013 Procedia Computer Science  
while adapting to large-scale dataset and data features is very important.  ...  The proposed approach integrates a distributed recognition scheme called Distributed Hierarchical Graph Neuron (DHGN) for pattern recognition and k-nearest neighbor (k-NN) for pattern classification.  ...  Acknowledgements We would like to acknowledge the Department of Higher Education, Ministry of Education (MOE), Malaysia for the funding used in this research project under the Fundamental Research Grant  ... 
doi:10.1016/j.procs.2013.10.030 fatcat:si7dcnx3qbfmhfw4bugln3vsca

Libra: scalable k-mer–based tool for massive all-vs-all metagenome comparisons

Illyoung Choi, Alise J Ponsero, Matthew Bomhoff, Ken Youens-Clark, John H Hartman, Bonnie L Hurwitz
2018 GigaScience  
Yet, inferences from metagenomic studies are often limited by dataset size and complexity and are restricted by the availability and completeness of existing databases.  ...  Shotgun metagenomics provides powerful insights into microbial community biodiversity and function.  ...  We thank the staff at the University of Arizona Information Technology Services for access and system support for the Hadoop cluster.  ... 
doi:10.1093/gigascience/giy165 pmid:30597002 pmcid:PMC6354030 fatcat:bzocpzgv6rfbxc4xe6axornmzu

Tissue-specific expression of a Ca(2+)-activated K+ channel is controlled by multiple upstream regulatory elements

R Brenner, TO Thomas, MN Becker, NS Atkinson
1996 Journal of Neuroscience  
We have identified different sequences required for expression in the CNS, midgut, tracheal cells, and muscle.  ...  Deletion analysis was used to identify sequences important for tissue-specific expression.  ...  The PCR protocol was 94°C for 1 min, 60°C for 1 min, and 72°C for 2 min for 34 cycles.  ... 
doi:10.1523/jneurosci.16-05-01827.1996 pmid:8774450 fatcat:fnizjztskbcuzd2qm4hmnqsfzu

K-space reconstruction of magnetic resonance inverse imaging (K-InI) of human visuomotor systems

Fa-Hsuan Lin, Thomas Witzel, Wei-Tang Chang, Kevin Wen-Kai Tsai, Yen-Hsiang Wang, Wen-Jui Kuo, John W. Belliveau
2010 NeuroImage  
This robust and sensitive K-InI reconstruction can be applied to dynamic MRI acquisitions using a large-n coil array to improve the spatiotemporal resolution.  ...  Mathematically, the InI reconstruction is a generalization of parallel MRI (pMRI), which includes image space and k-space reconstructions.  ...  Acknowledgments This work was supported by National Institutes of Health Grants by R01DA14178, R01HD040712, R01NS037462, P41 RR14075, R01EB006847, RO1EB000790, R21EB007298, and the Mental Illness and Neuroscience  ... 
doi:10.1016/j.neuroimage.2009.11.016 pmid:19914383 pmcid:PMC3745282 fatcat:pyulp23qivfptfqbnjqc7waqw4

Fast Approximate k-Nearest Neighbours Search Using GPGPU [chapter]

Niko Lukač, Borut Žalik
2014 GPU Computing and Applications  
Over recent years fast k-NN processing for large amount of high-dimensional data is increasingly demanded.  ...  It was compared to the state-of-the-art CPU-based k-ANN and two GPU-based k-NN methods on large and multidimensional dataset.  ...  Acknowledgements Thanks to the TEXMEX Research Team for publicly providing the SIFT dataset for research purposes.  ... 
doi:10.1007/978-981-287-134-3_14 fatcat:os4elf2yzvfatlz2yhemojpljq

Statistics of Thawing K-essence Dark Energy Models [article]

Zhiqi Huang
2021 arXiv   pre-print
K-essence is a minimally-coupled scalar field whose Lagrangian density ℒ is a function of the field value ϕ and the kinetic energy X=1/2∂_μϕ∂^μϕ.  ...  In the thawing scenario, the scalar field is frozen by the large Hubble friction in the early universe, and therefore initial conditions are specified.  ...  In practice, we evolve Eq. ( 9 ) for a pivot scale k pivot = 0.05h Mpc −1 and discard the models where the growth factor of dark energy density perturbations (| δρ ρ |, initially normalized to unity)  ... 
arXiv:2108.06089v2 fatcat:b7yek3nvarffxpfcj7naotyava

The K supergiant runaway star HD~137071

F. Comeron, F. Figueras
2020 Astronomy and Astrophysics  
of the Galactic plane and speculate which of the two proposed mechanisms for the production of runaway stars may be responsible for the high velocity of HD 137071.  ...  However, intrinsic limitations in determining the trigonometric parallaxes of cool supergiants, even in the Gaia era, require accurate spectral classifications for confirmation. Methods.  ...  It is always a pleasure to thank the hospitality of all the staff at Calar Alto Observatory, and particularly David Galadí on this occasion for his support with our observations.  ... 
doi:10.1051/0004-6361/202038136 fatcat:x4jqoklvy5gota4qem2chlpv5q

Search for K^+→π^+νν at NA62 [article]

Jacopo Pinzino for the NA62 Collaboration: G. Aglieri Rinella, R. Aliberti, F. Ambrosino, R. Ammendola, B. Angelucci, A. Antonelli, G. Anzivino, R. Arcidiacono, I. Azhinenko, S. Balev, M. Barbanera, J. Bendotti, A. Biagioni (+229 others)
2018 arXiv   pre-print
K^+→π^+νν is one of the theoretically cleanest meson decay where to look for indirect effects of new physics complementary to LHC searches.  ...  NA62 took data in pilot runs in 2014 and 2015 reaching the final designed beam intensity. The quality of 2015 data acquired, in view of the final measurement, will be presented.  ...  Therefore kinematic reconstruction, Figure 2 : m 2 miss distributions for signal and backgrounds from the main K + decay modes.  ... 
arXiv:1807.09101v1 fatcat:c7kiyd5jljdktek4shykwo5huu

Continuous top-k query for graph streams

Shirui Pan, Xingquan Zhu
2012 Proceedings of the 21st ACM international conference on Information and knowledge management - CIKM '12  
Our method represents the first research endeavor for data stream based top-k correlated graph query.  ...  data batch level) to accurately estimate the correlation of the emerging candidate patterns, without rechecking the historical stream data.  ...  Large-Scale De-Duplication Tasks (Page 1055) Anish Das Sarma (Google Research) Ankur Jain (Yahoo!  ... 
doi:10.1145/2396761.2398717 dblp:conf/cikm/PanZ12a fatcat:lugcho6xdbdtzgg5srgcqkwvsa

The K supergiant runaway star HD 137071 [article]

F. Comerón, F. Figueras
2020 arXiv   pre-print
However, intrinsic limitations in determining the trigonometric parallaxes of cool supergiants, even in the Gaia era, require accurate spectral classifications for confirmation.  ...  proximities of the galactic plane and speculate on which of the two proposed mechanisms for the production of runaway stars may be responsible for the high velocity of HD 137071.  ...  It is always a pleasure to thank the hospitality of all the staff at Calar Alto Observatory, and particularly David Galadí on this occasion for his support with our observations.  ... 
arXiv:2004.12622v1 fatcat:wk4yxhp3bzgvhp5tt6xx3vq34e

Investigation of oxygen disorder, thermal parameters, lattice vibrations and elastic constants of UO2 and ThO2 at temperatures up to 2 930 K

K. Clausen, W. Hayes, M. T. Hutchings, J.E. Macdonald, R. Osborn, P. Schnabel
1984 Revue de Physique Appliquée  
These results show unambiguously, for the first time, that oxygen Frenkel disorder does occur in UO2 above 2 000 K.  ...  These have been backed by experiments in the lower temperature range to 2 500 K at I.L.L.  ...  Hukin for advice and discussions on high temperature technology, and P. Bowen and W. Futcher for experimental assistance. This work has been supported by the U.K.S.E.R.C., A.E.R.E.  ... 
doi:10.1051/rphysap:01984001909071900 fatcat:lqv3uo7skvgvfgxte5zsti7mqa

Fast k-NN classification for multichannel image data

Simon Warfield
1996 Pattern Recognition Letters  
A new fast and exact algorithm for determining the ¢ -NN classification of multichannel image data, and a new distance transform algorithm are described.  ...  Complexity analysis and empirical studies with magnetic resonance images (MRI) demonstrate the effectiveness of the new classification algorithm.  ...  so provides fast accurate classification for multichannel image data without editing of training data sets.  ... 
doi:10.1016/0167-8655(96)00036-0 fatcat:g5zws4tbebgernv7wtk4eapskq

Search for direct CP violating charge asymmetries in K±→π±π+π- and K±→π±π0π0 decays

J.R. Batley, A.J. Culling, G. Kalmus, C. Lazzeroni, D.J. Munday, M.W. Slater, S.A. Wotton, R. Arcidiacono, G. Bocquet, N. Cabibbo, A. Ceccucci, D. Cundy (+110 others)
2007 European Physical Journal C: Particles and Fields  
A new technique of asymmetry measurement involving simultaneous K^+ and K^- beams and a large data sample collected allowed a result of an unprecedented precision.  ...  A measurement of the direct CP violating charge asymmetries of the Dalitz plot linear slopes A_g=(g^+-g^-)/(g^++g^-) in K^±→π^±π^+π^- and K^±→π^±π^0π^0 decays by the NA48/2 experiment at CERN SPS is presented  ...  Acknowledgements 768 It is a pleasure to thank the technical staff of the participating laboratories, universi-769 ties and affiliated computing centres for their efforts in the construction of the NA48  ... 
doi:10.1140/epjc/s10052-007-0456-7 fatcat:voxfuhgpqzaztka5ueokeljgtm

Fast Scalable k-NN Computation for Very Large Point Clouds [article]

Sandro Spina, Kurt Debattista, Keith Bugeja, Alan Chalmers
2012 Computer Graphics and Visual Computing  
A common factor in these algorithms is the recurring need for the computation of point neighborhoods, usually by applying algorithms to compute the k-nearest neighbours of each point.  ...  These data sets are usually cleaned through the application of numerous post-processing algorithms, like normal determination, clustering and noise removal.  ...  We thank Greg Ward for the Conference scene from Radiance package and Marko Dabrovic for the Sibenik cathedral model. The conference and sibenik point clouds were produced from these two models.  ... 
doi:10.2312/localchapterevents/tpcg/tpcg12/085-092 dblp:conf/tpcg/SpinaDBC12 fatcat:s6w4b7dgurcz7olth63qacferi
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