Results 51 to 60 of about 38,416 (305)

Functional Connectivity Linked to Cognitive Recovery After Minor Stroke

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Patients with minor stroke exhibit slowed processing speed and generalized alterations in functional connectivity involving frontoparietal cortex (FPC). The pattern of connectivity evolves over time. In this study, we examine the relationship of functional connectivity patterns to cognitive performance, to determine ...
Vrishab Commuri, Isabella Dallasta, Ciaran Stone, Sophia Girgenti, Neda Gould, Rafael H. Llinas, Jonathan Z. Simon, Elisabeth Breese Marsh   +7 more
wiley   +1 more source

A mathematical model for data-driven synthesis of neuron morphologies based on random walks

Frontiers in Applied Mathematics and Statistics
Recent advances in computational resources have enabled the development of large-scale, biophysically detailed brain models, which require numerous three-dimensional neuron morphologies exhibiting realistic cell-to-cell variability.
Francesco Cavarretta, Francesco Cavarretta   +1 more
doaj   +1 more source

$N$-Branching Random Walk with $\alpha$-Stable Spine [PDF]

Theory of Probability & Its Applications, 2017
We consider a branching-selection particle system on the real line, introduced by Brunet and Derrida. In this model the size of the population is fixed to a constant $N$. At each step individuals in the population reproduce independently, making children around their current position.
Bastien Mallein, Bastien Mallein
openaire   +5 more sources

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Survival, extinction and approximation of discrete-time branching random walks

, 2011
We consider a general discrete-time branching random walk on a countable set X. We relate local, strong local and global survival with suitable inequalities involving the first-moment matrix M of the process.
A. Greven, A.M. Stacey, D. Bertacchi, D. Bertacchi, D. Bertacchi, E. Seneta, F. Comets, F. Galton, F. Hollander den, F.P. Machado, F.P. Machado, Fabio Zucca, I. Hueter, J.D. Biggins, J.D. Biggins, J.D. Biggins, J.D. Biggins, K.B. Athreya, N. Madras, R. Pemantle, T. Mountford, T.E. Harris, T.M. Liggett, T.M. Liggett, W. Woess, W. Woess   +25 more
core   +1 more source

Numerical Exploration of Thermal Shock Resistance in MgO–C Refractories

Advanced Engineering Materials, EarlyView.
A mesostructure‐resolved numerical framework is developed to evaluate the thermal shock resistance of MgO–C refractories. By modeling interface debonding under rapid temperature changes and introducing a modified thermal shock parameter that accounts for mesocracks, the study shows how graphite content and aggregate size influence thermal shock ...
Jishnu Vinayak Gopi, Stephan Roth, Christos G. Aneziris, Bjoern Kiefer   +3 more
wiley   +1 more source

Artificial Plant Root System Growth for Distributed Optimization: Models and Emergent Behaviors

Open Life Sciences, 2016
Plant root foraging exhibits complex behaviors analogous to those of animals, including the adaptability to continuous changes in soil environments. In this work, we adapt the optimality principles in the study of plant root foraging behavior to create ...
Su Weixing, Na Lin, Liu Fang, Liu Wei, Ashraf Muhammad Aqeel, Chen Hanning   +5 more
doaj   +1 more source

Survival probability of the branching random walk killed below a linear boundary

, 2010
We give an alternative proof of a result by N. Gantert, Y. Hu and Z. Shi on the asymptotic behavior of the survival probability of the branching random walk killed below a linear boundary, in the special case of deterministic binary branching and bounded
Bérard, Jean, Gouéré, Jean-Baptiste
core   +2 more sources

The multitype branching random walk, II

Journal of Multivariate Analysis, 1982
AbstractThe limiting behaviour of the multitype branching random walk is studied. A limit theorem is proven for the supercritical process. Steady‐state distributions are shown to exist for the subcritical process with immigration, and for the critical transient process beginning with Poisson random fields.
openaire   +3 more sources

Dependent double branching annihilating random walk

Electronic Journal of Probability, 2015
35 pages, 7 ...
Balazs, Marton, Nagy, Attila László
openaire   +6 more sources