Results 121 to 130 of about 223,857 (311)
Stopping times occurring simultaneously
ESAIM: Probability and StatisticsStopping times are used in applications to model random arrivals. A standard assumption in many models is that they are conditionally independent, given an underlying filtration. This is a widely useful assumption, but there are circumstances where it seems to be unnecessarily strong.
Philip Protter, Alejandra Quintos
openaire +3 more sources
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Super‐Refractory Status Epilepticus (SRSE) is a rare, life‐threatening neurological emergency with unclear etiology in many cases. Mitochondrial dysfunction, often due to disease‐causing genetic variants, is increasingly recognized as a cause, with each gene producing distinct pathophysiological mechanisms.
Pouria Mohammadi +2 more
wiley +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background Accessing brain magnetic resonance imaging (MRI) can be challenging, especially for underserved patients, which may lead to disparities in neurological diagnosis. Method This mixed‐methods study enrolled adults with one of four neurological disorders: mild cognitive impairment or dementia of the Alzheimer type, multiple sclerosis ...
Maya L. Mastick +19 more
wiley +1 more source
A Note on the Variance of a Stopping Time
The Annals of Statistics, 1987 Let \(\{S_ n=\sum^{n}_{1}X_ i\}_{n\geq 0}\) be a random walk with \(\mu =E X_ i>0\) and \(\sigma\) \(2=Var X_ ib\}\) be the hitting time of the set (b,\(\infty)\). \textit{T. L. Lai} and \textit{D. Siegmund} [Ann. Stat. 7, 60-76 (1979; Zbl 0409.62074)] showed that Var \(\tau\) (b)\(=b \sigma\) 2/\(\mu\) \(3+K/\mu\) \(2+o(1)\) as \(b\to \infty\), and ...
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Optimal stopping in Levy models, for non-monotone discontinuous payoffs
We give short proofs of general theorems about optimal entry and exit problems in Levy models, when payoff streams may have discontinuities and be non-monotone.
Boyarchenko, Svetlana +1 more
core
, 2009 6 pagesWe consider the optimal double stopping time problem defined for each stopping time $S$ by $v(S)=\esssup\{\, E[\psi(\tau_1, \tau_2)\, |\,\F_S], \tau_1, \tau_2 \geq S\,\}$.
Kobylanski, Magdalena +2 more
core
Stopping time (sample size) of items.
, 2014 Stopping time (sample size) of items.
Hung-Yi Lu (625937)
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Validity of a Wearable Digital Insole for Assessing Gait ON and OFF in Parkinson's Disease
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Gait impairment is a distinctive symptom of Parkinson's disease that negatively impact mobility. We assessed the validity of wearable digital insoles against a validated reference gait analysis system for measuring select gait characteristics in patients with Parkinson's disease. Methods A comparative analysis between digital insoles
Deborah A. Hall +16 more
wiley +1 more source
Cracking the Code: Genotype–Phenotype Correlation Models in Sarcoglycanopathies
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Sarcoglycanopathies are among the most severe limb‐girdle muscular dystrophies (LGMD), though milder presentations have been described. These diseases are primarily caused by missense variants, but the limited predictability of their effect on protein maturation, complex formation, and transport has hindered reliable genotype ...
Leonela Luce +72 more
wiley +1 more source
A theory of endogenous time preference, and discounted utility anomalies [PDF]
We explain essentially all known discounted utility anomalies as artefacts of the optimizing behavior of an individual with a time- separable utility function, who perceives a good as a source of a stochastic consumption stream, and believes that she can
Svetlana Boyarchenko +1 more
core