Results 21 to 30 of about 532 (176)
Central limit theorems for multicolor urns with dominated colors [PDF]
, 2009 An urn contains balls of d≥2 colors. At each time n≥1, a ball is drawn and then replaced together with a random number of balls of the same color. Let A n = diag (An,1,…,An,d) be the n-th reinforce matrix. Assuming that EAn,j=EAn,1 for all n and j, a few
L. Pratelli +7 more
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A note on the extinction problem for controlled multitype branching processes [PDF]
, 2005 2000 Mathematics Subject Classification: 60J80, 60J10. In this paper we consider a discrete time controlled multitype branching process with random control in discrete time. We provide sufficient conditions for the almost sure extinction of the process as well as for its indefinite growth with a positive probability. Moreover an illustrative example is
Gonzalez, Miguel +2 more
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Critical Multitype Branching Processes
The Annals of Probability, 1982 A general multitype branching process in which individuals are counted according to some possibly type-dependent characteristic may be defined along the lines laid out by Jagers (1969, 1974) for the single type process. In the critical case, the probability of nonextinction at time $t$ is shown to be $O(t^{-1})$, and, conditioned on nonextinction at ...
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Supercritical Multitype Branching Processes
The Annals of Probability, 1976 We show that there always exists a sequence of normalizing constants for the supercritical multitype Galton-Watson process so that the normalized sequence converges in probability to a limit which is proper and not identically zero. The Laplace-Stieltjes transform of the limit random variable is characterized as the unique solution under certain ...
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International Wound Journal, Volume 23, Issue 3, March 2026.ABSTRACTVenous leg ulcers (VLU) are a major complication of chronic venous disease, with compression therapy as the gold‐standard treatment. This 2 × 2 factorial randomised open‐label trial assessed the effect and three‐month sustainability of a one‐hour training intervention on compression bandaging quality among 50 advanced practice nursing students (
Anne Danjou +5 more
wiley +1 more source
The multiple birth properties of multi-type Markov branching processes
Boundary Value ProblemsThe main purpose of this paper is to consider the multiple birth properties for multi-type Markov branching processes. We first construct a new multi-dimensional Markov process based on the multi-type Markov branching process, which can reveal the ...
Junping Li, Wanting Zhang
doaj +1 more source
Multi‐Scale Transformer for Image Restoration
CAAI Transactions on Intelligence Technology, Volume 11, Issue 1, Page 41-54, February 2026.ABSTRACT Although Transformer‐based image restoration methods have demonstrated impressive performance, existing Transformers still insufficiently exploit multiscale information. Previous non‐Transformer‐based studies have shown that incorporating multiscale features is crucial for improving restoration results.
Wuzhen Shi +6 more
wiley +1 more source
Multitype linear fractional branching processes [PDF]
Journal of Applied Probability, 2006 We complete a paper written by Edward Pollak in 1974 on a multitype branching process the generating functions of whose birth law are fractional linear functions with the same denominator. The main tool is a parameterization of these functions adapted using the mean matrix M and an element w of the first quadrant. We use this opportunity to give a self-
Joffe, A., Letac, G.
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IET Energy Systems Integration, Volume 8, Issue 1, January/December 2026.ABSTRACT Renewable energy bases in Desert‐Gobi‐Wasteland (DGW) areas connected with high‐voltage direct current (HVDC) transmission systems show notable weak‐grid features, including low inertia, weak damping and a low short‐circuit ratio. This results in strong active power–voltage (P–V) coupling effects, making existing real‐time active power control
Guoqing Li +4 more
wiley +1 more source
Continuous-time multitype branching processes conditioned on very late extinction
, 2011 Multitype branching processes and Feller diffusion processes are conditioned on very late extinction. The conditioned laws are expressed as Doob h-transforms of the unconditioned laws, and an interpretation of the conditioned paths for the branching ...
Pénisson, Sophie
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