Results 181 to 190 of about 757,960 (318)

Parameter estimation of a bivariate diffusion process : the Heston model

, 2011
Includes abstract.Includes bibliographical references (leaves 27-29).The main objective of the research is to estimate the parameters on the Heston (1993) model, which models the movement of asset prices assuming that the asset price volatility is ...
Nomoyi, Siyabulela
core  

DGADiff: Decoupled Guide Attention with Diffusion Model for Portrait Stylization. [PDF]

Sensors (Basel)
Ren Y, Shen Z, Fan J, Guo G.
europepmc   +1 more source

Electroencephalographic Normalization as a Biomarker of Clinical Recovery in Down Syndrome Regression Disorder

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Down syndrome regression disorder is a syndrome characterized by subacute loss of cognitive, behavioral, and functional abilities in individuals with Down syndrome. Electroencephalography abnormalities are frequently observed during evaluation, but it remains unclear whether these findings represent a dynamic marker of disease ...
Jonathan D. Santoro, Mackenzie Silverman, Maeve C. Lucas, Mariam M. Yousuf, Samuel T. Otey, Stella V. Gray, Brittany Jordan, Madeline D. Kahan, Latanya D. Agurs, Michelle Van Hirtum Das, Deborah Holder, Devin King, Eileen A. Quinn, Ryan Kammeyer, Michael S. Rafii   +14 more
wiley   +1 more source

A Spatio-Temporal Diffusion Model for Cardiac Real-Time Imaging. [PDF]

Magn Reson Med
Schad O, Heidenreich JF, Petri N, Hartung V, Kollmann A, Bley TA, Nordbeck P, Petritsch B, Wech T.   +8 more
europepmc   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright, Scotty G. McKay, Jean Ramos Bou, Fen Bao, Vivian B. Truong, Chenyang Li, Li Jiang, Anza B. Memon, E. Mark Haacke, Yulin Ge, Yongsheng Chen   +10 more
wiley   +1 more source

Modelling global diffusion. [PDF]

This paper presents a general model of global diffusion processes. The approach recognizes 'breadth' and 'depth' of adoption by first considering the sequential introduction of the innovation across countries (breadth).
Sarvary, M., Dekimpe, Marnik, Parker, P.M.   +2 more
core  

Numerical investigation of a reaction-diffusion model used for rumor spreading in a 'street'. [PDF]

PLoS One
Pei F, Du Y.
europepmc   +1 more source

Human Pegivirus Encephalitis With Brain Detection and Response to Sofosbuvir Ledipasvir

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Human pegivirus (HPgV‐1) has been associated with severe encephalomyelitis in immunocompromised patients. Its neurological spectrum remains poorly defined. We report a slowly progressive encephalitis in a person living with well‐controlled HIV, characterized by white matter abnormalities and inflammatory cerebrospinal fluid (CSF). HPgV RNA was
Antoine Moulignier, Françoise Heran, Francis Lallemand, Pierre Bourdillon   +3 more
wiley   +1 more source

Correcting for Motion between Acquisitions in Diffusion MR Imaging

, 2009
The diffusion tensor (DT) and other diffusion models assume that each voxel corresponds to the same anatomical location in all the measurements. Movements and distortions violate this assumption and typically the images are realigned before model ...
Bai, Y
core  

DiSCO: deconvoluting spatial transcriptomics via combinatorial optimization with a foundational diffusion model. [PDF]

Brief Bioinform
Liu J, Wu Y, Li L.
europepmc   +1 more source