261 Hits in 3.4 sec

Cusp in the Symmetry Energy, Speed of Sound in Neutron Stars and Emergent Pseudo-Conformal Symmetry [article]

Hyun Kyu Lee, Yong-Liang Ma, Won-Gi Paeng, Mannque Rho
2022 arXiv   pre-print
We review how the "cusp" predicted in the nuclear symmetry energy generated by a topology change at density n_1/2 2 n_0 can have a surprising consequence, so far unrecognized in nuclear physics and astrophysics  ...  We discuss the implication of this on the recent PREX-II "dilemma" in the measured skin thickness of ^208Pb.  ...  This point is counter to the nLORE vis-à-vis the PREX-II dilemma.  ... 
arXiv:2107.01879v4 fatcat:zpf3ftp6kbhibgccc5ftzg4uz4

Uncertainty Estimation in Autoregressive Structured Prediction [article]

Andrey Malinin, Mark Gales
2021 arXiv   pre-print
Thus, this work aims to investigate uncertainty estimation for autoregressive structured prediction tasks within a single unified and interpretable probabilistic ensemble-based framework.  ...  While most research in the area has focused on un-structured prediction tasks, limited work has investigated general uncertainty estimation approaches for structured prediction.  ...  by expressing the predictive posterior both as a product-of-expectations (ENS-PrEx) and expectation-of-products (ENS-ExPr).  ... 
arXiv:2002.07650v5 fatcat:eq2i2iqbv5h2di2frxuiaipzg4

High-resolution surface topographic change analyses to characterize a series of underground explosions

Emily S. Schultz-Fellenz, Erika M. Swanson, Aviva J. Sussman, Ryan T. Coppersmith, Richard E. Kelley, Elizabeth D. Miller, Brandon M. Crawford, Anita F. Lavadie-Bulnes, James R. Cooley, Steven R. Vigil, Margaret J. Townsend, Jennifer M. Larotonda
2020 Remote Sensing of Environment  
For the lidar collections, we used a terrestrial lidar scanner to obtain highresolution point clouds and create digital elevation models (DEMs).  ...  A B S T R A C T The understanding of subsurface events that cannot be directly observed is dependent on the ability to relate surface-based observations to subsurface processes.  ...  The authors thank NNSA, the Office of Defense Nuclear Nonproliferation Research and Development (DNN R&D), and the SPE working group, a  ... 
doi:10.1016/j.rse.2020.111871 fatcat:35eys2wljrfzbeaogozyzym53a

Latent Inhibition Reduces Nocebo Nausea, Even Without Deception

V. F. Quinn, E. J. Livesey, B. Colagiuri
2017 Annals of Behavioral Medicine  
Methods: We examined this possibility using a Galvanic Vestibular Stimulation (GVS) model of nausea in healthy participants, with pre-exposure to the treatment cues achieved using a placebo version of  ...  Nocebo nausea is a debilitating and prevalent side effect that can develop after conditioning occurs between cues present in the treatment context and the experience of nausea.  ...  , expectancy on Day 3 predicted a significant amount of the variance in Day 3 nauseous response score, with a one unit increase in expectancy leading to a 1.4unit higher nauseous response score, t(42)=  ... 
doi:10.1007/s12160-016-9867-8 pmid:28054312 fatcat:bhamhb7subb7vjuz2uo3tzzs7m

Constraining the equation of state of neutron stars with gravitational wave observation [article]

Rana Nandi, Prasanta Char, Subrata Pal
2018 arXiv   pre-print
We find only few models can withstand these bounds which predict a stiff overall equation of state but with a soft neutron-proton symmetry energy.  ...  The tidal deformability bound of GW170817 combined with the observed 2M_ neutron star poses serious challenge to theoretical formulations of realistic equation of state.  ...  However, a definitive data-to-theory comparison would require a substantial reduction in the statistical error as planned in the future PREX-II experiment.  ... 
arXiv:1809.07108v2 fatcat:dhzp4xefufdg7f4gyklgu34vxq

Vector analyzing power in elastic electron-nucleus scattering

E. D. Cooper, C. J. Horowitz
2005 Physical Review C  
The vector analyzing power A_n is calculated for elastic electron scattering from a variety of spin zero nuclei at energies from 14 MeV to 3 GeV.  ...  We find that A_n=-0.361 ppm for the kinematics of the Parity Radius Experiment (PREX) involving 850 MeV electrons scattering at six degrees from 208Pb.  ...  The Parity Radius Experiment (PREX) [7, 8] aims to measure the neutron radius of 208 Pb accurately and model independently via parity violating electron scattering.  ... 
doi:10.1103/physrevc.72.034602 fatcat:zgagjkzlw5fxpajhjhyntpytme

Change Detection in a 3-d World

Thomas Pollard, Joseph L. Mundy
2007 2007 IEEE Conference on Computer Vision and Pattern Recognition  
due to occlusion and un-modeled 3-d scene geometry (egomotion parallax).  ...  To the authors' knowledge, this paper is the first to address the change detection problem in such a general framework.  ...  For a sometimes occluded surface voxel this scheme prevents occluding surface colors from seriously corrupting the voxel's color model.  ... 
doi:10.1109/cvpr.2007.383073 dblp:conf/cvpr/PollardM07 fatcat:avwhf5xu45cmdblmgt3vnqdxf4

Apicomplexan-like parasites are polyphyletic and widely but selectively dependent on cryptic plastid organelles

Jan Janouškovec, Gita G Paskerova, Tatiana S Miroliubova, Kirill V Mikhailov, Thomas Birley, Vladimir V Aleoshin, Timur G Simdyanov
2019 eLife  
Environmental sequences of ten novel plastid lineages and structural innovations in plastid proteins confirm that plastids in apicomplexans and their relatives are widespread and share a common, photosynthetic  ...  In eugregarines, however, plastids are either abnormally reduced or absent, thus increasing known plastid losses in eukaryotes from two to four.  ...  The only exceptions to this pattern are the last three enzymes in heme biosynthesis, which are predicted to be plastidial in some parasites (see Discussion).  ... 
doi:10.7554/elife.49662 pmid:31418692 pmcid:PMC6733595 fatcat:z5xfivvgezhsva2rmhxvqk4pvu

Second-Order Conditioning and Conditioned Inhibition in Different Moments of the Same Training: The Effect of A+ and AX− Trial Number

Clara Muñiz-Diez, Judit Muñiz-Moreno, Ignacio Loy
2021 Frontiers in Behavioral Neuroscience  
These results cannot be predicted by acquisition-focused associative models but can be predicted by theories that distinguish between learning and performance.  ...  The results indicated that SOC is most likely to be found at the beginning of training when there are many A+ and few AX− trials, and CI (as assessed by a retardation test) is most likely to be found at  ...  ACKNOWLEDGMENTS The authors would like to thank Beatriz Álvarez for the time and effort dedicated to the review of the manuscript.  ... 
doi:10.3389/fnbeh.2021.632548 pmid:33967712 pmcid:PMC8097050 fatcat:kgqmlqa6prgwbnbqjo4sa5u64e

PREX1 Protein Function Is Negatively Regulated Downstream of Receptor Tyrosine Kinase Activation by p21-activated Kinases (PAKs)

Douglas Barrows, John Z. He, Ramon Parsons
2016 Journal of Biological Chemistry  
A recent study showed that Rac binds to a PKA regulatory subunit and that PKA phosphorylates and activates PAK, setting up a model where PKA binds Rac-GTP to help in the stimulation of PAK and its downstream  ...  to the role of PREX proteins in cancer.  ... 
doi:10.1074/jbc.m116.723882 pmid:27481946 pmcid:PMC5025690 fatcat:aovv6uwfffe4bp6bn5lklrotnu

Constraints on Neutron Star Crusts from Oscillations in Giant Flares

Andrew W. Steiner, Anna L. Watts
2009 Physical Review Letters  
An accurate measurement of the neutron skin thickness of lead will also constrain the frequencies predicted by the model.  ...  We show that the fundamental seismic shear mode, observed as a quasi-periodic oscillation in giant flares emitted by highly-magnetized neutron stars, is particularly sensitive to the nuclear physics of  ...  The upcoming PREX measurement will help constrain the frequencies predicted by the model, reducing the uncertainty originating from our lack of knowledge of the symmetry energy.  ... 
doi:10.1103/physrevlett.103.181101 pmid:19905795 fatcat:lcjv3ot2jrc5xejp7x7etpstum

All Your IFCException Are Belong to Us

C. Hritcu, M. Greenberg, B. Karel, B. C. Pierce, G. Morrisett
2013 2013 IEEE Symposium on Security and Privacy  
The second mechanism adapts the standard exception model to satisfy the extra constraints arising from information flow control, converting thrown exceptions to delayed ones at certain points.  ...  The first mechanism builds directly on these basic ingredients, using not-a-values (NaVs) and data flow to propagate errors.  ...  We are grateful to B. Montagu and R. Pollack for their help with the formal proofs and for contributing to useful discussions. We thank A. Chudnov, A. DeHon, J. Hsu, S. Iyer, A. Russo, H. Shrobe,  ... 
doi:10.1109/sp.2013.10 dblp:conf/sp/HritcuGKPM13 fatcat:h2blp4ksxnbnlduff7eh5fbvwi

Workshop on High-Intensity Photon Sources (HIPS2017) Mini-Proceedings [article]

S. Ali, L. Allison, M. Amaryan, R. Benimiwattha, A. Camsonne, D. Day, P. Degtiarenko, D. Dutta, R. Ent, J.L. Goity, D. Hamilton, O. Hen, T. Horn, C. Hyde (+28 others)
2017 arXiv   pre-print
Potential prospects of such a high-intensity source with modern polarized targets were also discussed.  ...  The combination of high precision calorimetry and high intensity photon sources greatly enhances scientific benefit to (deep) exclusive processes like wide-angle and time-like Compton scattering.  ...  semiexclusive large angle photon-nucleus reactions with tagged photon beams of energies 6 ÷ 10 GeV which can be performed in Hall D at Thomas Jefferson National Acceleration Facility (TJNAF) would allow to  ... 
arXiv:1704.00816v1 fatcat:ktzsxaty3ngg3io2yxlkzbkile

Wild-type bacteriophage T4 is restricted by the lambda rex genes

S Shinedling, D Parma, L Gold
1987 Journal of Virology  
The bacteriophage T4 rII genes and the lambda rex (r exclusion) genes interact; rll mutants are unable to productively infect rex+ lambda lysogens.  ...  The relationship between rex and rll has been found to be quantitative, and plasmid clones of rex have excluded not only rII mutants but T4 wild type and most other bacteriophages as well.  ...  To verify these predictions, we crossed rim-2, rim-13, and amGl to ac4l, amB22, and each other.  ... 
doi:10.1128/jvi.61.12.3790-3794.1987 fatcat:m5fqmv4hh5htpise7dbr3agnt4

Relativistic density functional theory for finite nuclei and neutron stars [chapter]

Jorge Piekarewicz
2016 International Review of Nuclear Physics  
After a brief historical perspective, we present the necessary details required to compute the equation of state of dense, neutron-rich matter.  ...  The main goal of the present contribution is a pedagogical introduction to the fascinating world of neutron stars by relying on relativistic density functional theory.  ...  For all models, the drip line is predicted to occur at a density of about 4×10 11 g/cm 3 and with the formation of the highly exotic 118 Kr isotope.  ... 
doi:10.1142/9789814733267_0014 fatcat:6clu2clrqjdvflqk4svfisraby
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