Results 81 to 90 of about 10,537,968 (352)

Spin glasses without time-reversal symmetry and the absence of a genuine structural glass transition

, 2000
We study the three-spin model and the Ising spin glass in a field using Migdal-Kadanoff approximation. The flows of the couplings and fields indicate no phase transition, but they show even for the three-spin model a slow crossover to the asymptotic high-
B.W. Southern, Barbara Drossel, Barbara Drossel, D.A. Huse, E. Marinari, E. Marinari, E. Marinari, E. Marinari, E. Marinari, F. Krzakala, G. Parisi, H. Bokil, H. Bokil, Hemant Bokil, Hemant Bokil, J. Houdayer, J. Houdayer, J. Houdayer, L. Santen, M. A. Moore, M. Marinari, M. Marinari, M. Palassini, M.A. Moore, T.R. Kirkpatrick, T.R. Kirkpatrick, T.R. Kirkpatrick, W. Götze, W. Kauzmann   +28 more
core   +1 more source

A large‐scale retrospective study in metastatic breast cancer patients using circulating tumour DNA and machine learning to predict treatment outcome and progression‐free survival

Molecular Oncology, EarlyView.
There is an unmet need in metastatic breast cancer patients to monitor therapy response in real time. In this study, we show how a noninvasive and affordable strategy based on sequencing of plasma samples with longitudinal tracking of tumour fraction paired with a statistical model provides valuable information on treatment response in advance of the ...
Emma J. Beddowes, Mario Ortega Duran, Solon Karapanagiotis, Alistair Martin, Meiling Gao, Riccardo Masina, Ramona Woitek, James Tanner, Fleur Tippin, Justine Kane, Jonathan Lay, Anja Brouwer, Stephen‐John Sammut, Suet‐Feung Chin, Davina Gale, Dana W. Y. Tsui, Sarah‐Jane Dawson, Nitzan Rosenfeld, Maurizio Callari, Oscar M. Rueda, Carlos Caldas   +20 more
wiley   +1 more source

A New Empirical Approach to Intercultural Comparisons of Value Preferences Based on Schwartz’s Theory

Frontiers in Psychology, 2020
Empirical tests of Schwartz’s theory of culture-level value priorities have predominantly been performed using an averaging approach–as values of the average individual in a culture. However, from a theory of measurement standpoint such an approach seems
Erich H. Witte, Adrian Stanciu, Adrian Stanciu, Klaus Boehnke, Klaus Boehnke   +4 more
doaj   +1 more source

The interaction of a giant planet with a disc with MHD turbulence I: The initial turbulent disc models

, 2002
This is the first of a series of papers aimed at developing and interpreting simulations of protoplanets interacting with turbulent accretion discs.
Balbus, Balbus, Brandenburg, Brandenburg, Bryden, D'Angelo, Fleming, Hawley, Hawley, Hawley, Hawley, John C. B. Papaloizou, Kley, Lin, Lin, Lubow, Marcy, Mayor, Nelson, Nelson, Papaloizou, Richard P. Nelson, Shakura, Steinacker, Van Leer, Vogt, Ziegler   +26 more
core   +1 more source

Escape from TGF‐β‐induced senescence promotes aggressive hallmarks in epithelial hepatocellular carcinoma cells

Molecular Oncology, EarlyView.
Chronic TGF‐β exposure drives epithelial HCC cells from a senescent state to a TGF‐β resistant mesenchymal phenotype. This transition is characterized by the loss of Smad3‐mediated signaling, escape from senescence, enhanced invasiveness and metastatic potential, and upregulation of key resistance modulators such as MARK1 and GRM8, ultimately promoting
Minenur Kalyoncu, Dilara Demirci, Sude Eris, Bengisu Dayanc, Ece Cakiroglu, Merve Basol, Merve Uysal, Gulcin Cakan‐Akdogan, Fang Liu, Mehmet Ozturk, Gökhan Karakülah, Serif Senturk   +11 more
wiley   +1 more source

First-principles study of lattice instabilities in Ba_xSr_(1-x)TiO_3

, 2000
Using first-principles calculations based on a variational density functional perturbation theory, we investigate the lattice dynamics of solid solutions of barium and strontium titanates.
Desquesnes, D., Ghosez, Ph., Gonze, X., Rabe, K. M.   +3 more
core   +1 more source

Obtaining Closure for Fin-and-Tube Heat Exchanger Modeling Based on Volume Averaging Theory (VAT)

, 2011
Modeling a fin-and-tube heat exchanger as porous media based on volume averaging theory (VAT), specific geometry can be accounted for in such a way that the details of the original structure can be replaced by their averaged counterparts, and the VAT ...
F. Zhou, N. Hansen, D. Geb, I. Catton
semanticscholar   +1 more source

ShcD adaptor protein drives invasion of triple negative breast cancer cells by aberrant activation of EGFR signaling

Molecular Oncology, EarlyView.
We identified adaptor protein ShcD as upregulated in triple‐negative breast cancer and found its expression to be correlated with reduced patient survival and increased invasion in cell models. Using a proteomic screen, we identified novel ShcD binding partners involved in EGFR signaling pathways.
Hayley R. Lau, Hayley S. Smith, Begüm Alural, Claire E. Martin, Laura A. New, Manali Tilak, Sara L. Banerjee, Hannah N. Robeson, Nicolas Bisson, Anne‐Claude Gingras, Jasmin Lalonde, Nina Jones   +11 more
wiley   +1 more source

Periodic orbits for a class of galactic potentials

, 2012
In this work, applying general results from averaging theory, we find periodic orbits for a class of Hamiltonian systems $H$ whose potential models the motion of elliptic galaxies.Comment: 8 pages, Accepted for publication in Astrophysics and Space ...
Alfaro, Felipe, Llibre, Jaume, Pérez-Chavela, Ernesto   +2 more
core   +1 more source

Hopf bifurcation for some analytic differential systems in R^3 via averaging theory

, 2011
We study the Hopf bifurcation from the singular point with eigenvalues $a$e$ \ \pm\ bi$ and $c $e located at the origen of an analytic differential system of the form $ \dot x= f( x)$, where $x \in \R^3$.
J. Llibre, C. Valls
semanticscholar   +1 more source