Results 61 to 70 of about 1,758,675 (318)
Conditions for Posterior Contraction in the Sparse Normal Means Problem [PDF]
, 2015 The first Bayesian results for the sparse normal means problem were proven for spike-and-slab priors. However, these priors are less convenient from a computational point of view.
Salomond, Jean-Bernard +2 more
core +5 more sources
Renewal Reward Processes with Heavy-Tailed Inter-Renewal Times and Heavy-Tailed Rewards [PDF]
Bernoulli, 2000 This paper studies a superposition \(W^*\) of renewal-reward processes having inter-renewal time and reward distributions with heavy tails of exponents \(\alpha\) and \(\beta\), respectively, where \(1< \alpha< 2 ...
Levy, Joshua B., Taqqu, Murad S.
openaire +3 more sources
Asymptotic behaviour of non-isotropic random walks with heavy tails
Modern Stochastics: Theory and Applications, 2017 A random flight on a plane with non-isotropic displacements at the moments of direction changes is considered. In the case of exponentially distributed flight lengths a Gaussian limit theorem is proved for the position of a particle in the scheme of ...
Mark Kelbert, Enzo Orsingher
doaj +1 more source
Modeling Air Pollution Using Partially Varying Coefficient Models with Heavy Tails
Mathematics, 2022 The increase in air pollution levels in recent decades around the world has caused a negative impact on human health. A recent investigation by the World Health Organization indicates that nine out of ten people on the planet breathe air containing high ...
Nicole Jeldes +3 more
doaj +1 more source
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
Heavy-Tailed Density Estimation
Journal of the American Statistical Association, 2022 A novel statistical method is proposed and investigated for estimating a heavy tailed density under mild smoothness assumptions. Statistical analyses of heavy-tailed distributions are susceptible to the problem of sparse information in the tail of the distribution getting washed away by unrelated features of a hefty bulk.
Surya T. Tokdar +2 more
openaire +2 more sources
Optimal Trade Execution under Jump Diffusion Process: A Mean-VaR Approach
Discrete Dynamics in Nature and Society, 2018 In the classical optimal execution problem, the basic assumption of underlying asset price is Arithmetic Brownian Motion (ABM) or Geometric Brownian Motion (GBM).
Tianmin Zhou, Can Jia, Handong Li
doaj +1 more source
Environmental concentrations as ratios of random variables
Environmental Research Letters, 2022 Human-induced environmental change increasingly threatens the stability of socio-ecological systems. Careful statistical characterization of environmental concentrations is critical to quantify and predict the consequences of such changes on human and ...
Saverio Perri, Amilcare Porporato
doaj +1 more source
Molecular Oncology, EarlyView.Adaptaquin selectively kills glioma stem cells while sparing differentiated brain cells. Transcriptomic and proteomic analyses show Adaptaquin disrupts iron and cholesterol homeostasis, with iron chelation amplifying cytotoxicity via cholesterol depletion, mitochondrial dysfunction, and elevated reactive oxygen species.
Adrien M. Vaquié +16 more
wiley +1 more source
Constructing a geography of heavy-tailed flood distributions: insights from common streamflow dynamics [PDF]
Hydrology and Earth System SciencesHeavy-tailed flood distributions depict the higher occurrence probability of extreme floods. Understanding the spatial distribution of heavy-tail floods is essential for effective risk assessment.
H.-J. Wang, R. Merz, R. Merz, S. Basso
doaj +1 more source