Results 241 to 250 of about 4,140,034 (300)

Z‐residuals diagnostics for Cox models: Functional‐form misspecification versus nonproportional hazards

Canadian Journal of Statistics, EarlyView.
Abstract Primary biliary cholangitis (PBC) is a progressive autoimmune cholestatic disease for which modelling death, with transplantation as a competing event, is clinically important. Cox proportional hazards (PH) models are widely used, but standard diagnostics detect lack of fit without distinguishing non‐PH from misspecified covariate functions ...
Tingxuan Wu, Cindy Feng, Longhai Li
wiley   +1 more source

Shape modes of C P 1 vortices. [PDF]

Lett Math Phys
Gavrea N, Harland D, Speight M.
europepmc   +1 more source

A Geometric Characterization of Steady Laminar Flow

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We study the steady states of the Euler equations on the periodic channel or annulus. We show that if these flows are laminar (layered by closed non‐contractible streamlines which foliate the domain), then they must be either parallel or circular flows.
Theodore D. Drivas, Marc Nualart
wiley   +1 more source

Joint Quality-Reliability Analysis of IRS-Assisted Communications in Presence of Inverse Power Lomax Fading Channel. [PDF]

Sensors (Basel)
Gvozdarev AS, Manakhov RY.
europepmc   +1 more source

Analysis of Bifurcation-Induced Indecisive Limit Cycles in Hybrid Opinion Dynamics with Social Attention-Controlled Consensus. [PDF]

IEEE Control Syst Lett
Kumar R, Yao N.
europepmc   +1 more source

Observer-based optimal and robust output regulation for nonlinear systems. [PDF]

PLoS One
Qazi AKA, Memon AY.
europepmc   +1 more source

Quantum Systems at The Brink: Helium-Type Systems. [PDF]

Arch Ration Mech Anal
Hundertmark D, Jex M, Lange M.
europepmc   +1 more source

Maximizing mobility: Distributed controllers of a Segway swarm for autonomous navigation in smart city environments. [PDF]

PLoS One
Chand RP, Chand R, Lal K, Sharma B, Kumar SA.   +4 more
europepmc   +1 more source