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Reeb dynamics detects odd balls [article]

Hansjörg Geiges, Kai Zehmisch
2014 arXiv   pre-print
We give a dynamical characterisation of odd-dimensional balls within the class of all contact manifolds whose boundary is a standard even-dimensional sphere.  ...  The characterisation is in terms of the non-existence of short periodic Reeb orbits.  ...  A part of the work on this paper was done during the workshop on Legendrian submanifolds, holomorphic curves and generating families at the Académie Royale de Belgique, August 2013, organised by Frédéric  ... 
arXiv:1401.3598v1 fatcat:uaynlwr5dbbfflnaj4f6dxi7ru

State-dependent Block of BK Channels by Synthesized Shaker Ball Peptides

Weiyan Li, Richard W. Aldrich
2006 The Journal of General Physiology  
However, accessibility studies on several types of ligand-sensitive K+channels have suggested that their activation gates may be located near or within the selectivity filter instead.  ...  We show in this study that a synthesized Shaker ball peptide (ShBP) homologue acts as a state-dependent blocker for BK channels when applied internally, suggesting a widening at the intracellular end of  ...  The authors thank Dr. Clay  ... 
doi:10.1085/jgp.200609521 pmid:16966472 pmcid:PMC2151574 fatcat:cv43xtwj65bczlgmde6x3ggnt4

Machine Vision-Based Ping Pong Ball Rotation Trajectory Tracking Algorithm

Yilei Wang, Ling Wang, Rahim Khan
2022 Computational Intelligence and Neuroscience  
After obtaining the position of the ping pong ball in the image, the rotation direction and speed of the ping pong ball are calculated next, and the Fourier transform-based speed measurement method and  ...  In this paper, we have examined and designed an automatic detection system for ping pong balls, in which the motion trajectory and rotation information of ping pong balls are mainly detected.  ...  Finally, we use the smooth L1 function as the loss function, which is de ned as follows: smooth L1 (x) 0.5x 2 , if|x| < 1, |x| − 0.5, otherwise.    (2) By doing so, we use L2 loss near the origin and  ... 
doi:10.1155/2022/3835649 pmid:35733560 pmcid:PMC9208958 fatcat:zayg546alfecfhkgpegevi32c4

The distribution of the Lasso: Uniform control over sparse balls and adaptive parameter tuning [article]

Léo Miolane, Andrea Montanari
2018 arXiv   pre-print
Crucially, we prove a stability property of the minimizer in Wasserstein distance, that allows to characterize properties of the minimizer itself.  ...  Lasso optimization problem.  ...  We can think of several possibilities to overcome this intrinsic non-uniformity over 0 balls. One option would be to consider a weaker notion of distance between probability measures.  ... 
arXiv:1811.01212v1 fatcat:4lipoix7h5akdkwid7bnarqyba

Optimal real-time Q-ball imaging using regularized Kalman filtering with incremental orientation sets

Rachid Deriche, Jeff Calder, Maxime Descoteaux
2009 Medical Image Analysis  
We demonstrate that our method solves the correct minimization problem at each iteration and recursively provides the optimal QBI solution.  ...  In this article, we first revisit and thoroughly analyze this approach and show it is actually sub-optimal and not recursively minimizing the intended criterion due to the Laplace-Beltrami regularization  ...  Acknowledgements This work was partly supported by the INRIA ARC Diffusion MRI Program, the INRIA Internship Program, the Odyssée-EADS Grant #2118 and the Association France Parkinson for the NucleiPark  ... 
doi:10.1016/j.media.2009.05.008 pmid:19586794 fatcat:oin3kw5mu5esfdki7sgzizxdwa

Creditors' Ball: The "New" New Corporate Governance in Chapter 11

David A. Skeel
2003 University of Pennsylvania law review  
Adler, A Re-Examination of Near Bankruptcy Investment Incentives, 62 U. CHICAGO L.  ...  debtor within ninety days of bankruptcy, with a one year reachback if the transferee is an insider).  ... 
doi:10.2307/3313038 fatcat:nvh5vkaerneyzkjzft534vlkou

Localization for random walks among random obstacles in a single Euclidean ball [article]

Jian Ding, Changji Xu
2018 arXiv   pre-print
that for environments with probability tending to one as n→∞ there exists a unique discrete Euclidean ball of volume d _1/p n asymptotically such that the following holds: conditioned on survival up to  ...  time n we have that at any time t ∈ [o(n),n] with probability tending to one the simple random walk is in this ball.  ...  The formulation of the problem in the quenched case requires some thinking (as the random walk does have excursions away from the localization ball which is rather long in comparison of the diameter of  ... 
arXiv:1807.08168v2 fatcat:clfs3nb735dkjct4ctcemqzxei

Adaptive processing of visual motion

Karlene Ball, Robert Sekuler
1981 Journal of Experimental Psychology: Human Perception and Performance  
The implications of these findings for models of motion detection are discussed.  ...  Generally, detectability declines when the observer is uncertain about the direction in which a target will move, but the visibility loss associated with direction uncertainty can be attenuated if the  ...  The performance loss of such an observer would be inversely proportional to the amount of time spent monitoring any one band.  ... 
doi:10.1037//0096-1523.7.4.780 pmid:6457092 fatcat:4b3s6slvi5ddvokqht6pvwibs4

Adaptive processing of visual motion

Karlene Ball, Robert Sekuler
1981 Journal of Experimental Psychology: Human Perception and Performance  
The implications of these findings for models of motion detection are discussed.  ...  Generally, detectability declines when the observer is uncertain about the direction in which a target will move, but the visibility loss associated with direction uncertainty can be attenuated if the  ...  The performance loss of such an observer would be inversely proportional to the amount of time spent monitoring any one band.  ... 
doi:10.1037/0096-1523.7.4.780 fatcat:rhck3ddwobhmdd722tck5ngkqu

Tumor-to-tumor Metastasis in the Spine

Robert S Laidlaw, John Turchini, Jonathan R Ball, J.K.B.C. Parthiban
2014 The Journal of Spinal Surgery  
Nanorobotics is the technology of creating machines or robots at or close to the microscopic scale of a nanometer (10 -9 m).  ...  Nanotechnology has diverse applica tions in the field of dendritic polymers, including sophisticated visualization of dental structures, improvement in the physical properties of materials, mimicking the  ...  Use of excessive ortho dontic force might cause loss of anchorage and root resorption.  ... 
doi:10.5005/jp-journals-10039-1018 fatcat:fed7s2lmcvfgpbgt2pvwpf32ee

Technical Design Study for the PANDA Time Projection Chamber [article]

M. Ball , B. Ketzer, S. Uhl, F. Cusanno, J. Frühauf, J. Kunkel, L. Schmitt, D. Kaiser, P. Müllner Technische Universität München, Germany, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany (+7 others)
2012 arXiv   pre-print
This document illustrates the technical layout and the expected performance of a Time Projection Chamber as the central tracking system of the PANDA experiment.  ...  The detector is based on a continuously operating TPC with Gas Electron Multiplier (GEM) amplification.  ...  Flow is kept strictly turbulent inside the detector-near structures in order to optimize heat transfer from the cooled surfaces to the coolant.  ... 
arXiv:1207.0013v1 fatcat:62poxk7lifgj3b3mz2zhfmwlnq

Bridging the Gap Between Adversarial Robustness and Optimization Bias [article]

Fartash Faghri, Sven Gowal, Cristina Vasconcelos, David J. Fleet, Fabian Pedregosa, Nicolas Le Roux
2021 arXiv   pre-print
bias of the optimization.  ...  To this end, we revisit a known result linking maximally robust classifiers and minimum norm solutions, and combine it with recent results on the implicit bias of optimizers.  ...  NLR is supported by the Canada CIFAR AI Chair program.  ... 
arXiv:2102.08868v2 fatcat:qhty2vogyvdmzaza45yr2xpq4y

Rational Chebyshev Spectral Transform for the dynamics of high-power laser diodes [article]

J. Javaloyes, S. Balle
2014 arXiv   pre-print
This manuscript details the use of the rational Chebyshev transform for describing the transverse dynamics of high-power laser diodes, either broad area lasers, index guided lasers or monolithic master  ...  Because their domain of definition is infinite, the convergence properties of the Chebyshev Rational functions allow handling the boundary conditions with higher accuracy than with the previously studied  ...  Perez-Serrano as well as financial support from the Ramon y Cajal fellowship. J.J. and S.B. acknowledge project  ... 
arXiv:1407.0542v1 fatcat:7cduizpvjncjliuw3poektjrpq

Nonnormal dilations, disconjugacy and constrained spectral factorization

Joseph A. Ball, J. William Helton
1980 Integral equations and operator theory  
T is sub-Jordan of order 2 if and only if T is coadjoint. Ball and Helton 218 This paper settles a large piece of the conjecture affirmatively.  ...  Ball and Helton 217 The dilations we study are based on an operator M which is Jordan, namely, one of the form M = S + N where S is self-adjoint and N is a nilpotent operator which commutes with S.  ...  dx.Thus a maximal (resp. minimal) ,8 again is one which is pointwise maximal (resp. minimal).  ... 
doi:10.1007/bf01682993 fatcat:jftxmf3atjgnri3gyp4wdijwym

Relational autonomy in assisted living: A focus on diverse care settings for older adults

Molly M. Perkins, Mary M. Ball, Frank J. Whittington, Carole Hollingsworth
2012 Journal of Aging Studies  
, or cultural differences, despite the growing diversity of AL.  ...  Consistent with Western cultural values, the traditional liberal theory of autonomy, which places emphasis on self-determination, liberty of choice, and freedom from interference by others, has been a  ...  of the manuscript.  ... 
doi:10.1016/j.jaging.2012.01.001 pmid:22707852 pmcid:PMC3374405 fatcat:m6fyobavezfudmgpr4q3hpjdjm
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