Results 61 to 70 of about 26,576 (302)

Modeling Air Pollution Using Partially Varying Coefficient Models with Heavy Tails

open access: yesMathematics, 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

Iron homeostasis disruption and lipid peroxidation in skeletal muscle during short‐term immobilization

open access: yesFEBS Open Bio, EarlyView.
14‐day casting‐induced immobilization reduced gastrocnemius muscle mass and increased non‐heme iron and ferritin heavy chain levels. Despite iron accumulation, transferrin receptor 1 and iron regulatory protein 2 were paradoxically upregulated. Lipid peroxidation was elevated without compensatory antioxidant responses.
Haruka Yokogawa   +2 more
wiley   +1 more source

Fat and Heavy Tails in Asset Management [PDF]

open access: yes, 2023
In this article, the authors explain non-normal probability distributions and the reasons it is important to properly model the tails of one or more distributions in applications to asset management.
Fabozzi F. J.   +2 more
core   +1 more source

Constructing a geography of heavy-tailed flood distributions: insights from common streamflow dynamics [PDF]

open access: yesHydrology and Earth System Sciences
Heavy-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

Environmental concentrations as ratios of random variables

open access: yesEnvironmental 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

Tail behavior of negatively associated heavy-tailed sums [PDF]

open access: yesJournal of Applied Probability, 2006
Consider a sequence {Xk, k ≥ 1} of random variables on (−∞, ∞). Results on the asymptotic tail probabilities of the quantities , and S(n) = max0 ≤ k ≤ nSk, with X0 = 0 and n ≥ 1, are well known in the case where the random variables are independent with a heavy-tailed (subexponential) distribution.
Geluk, J, Ng, KW
openaire   +3 more sources

YIPFα1A expression is regulated by multilayered molecular mechanisms

open access: yesFEBS Open Bio, EarlyView.
YIPFα1A, a five‐pass Golgi protein, is regulated at multiple layers. (1) Rare‐codon enrichment drives translation‐coupled mRNA decay. (2) A proximal 3′‐UTR element stabilizes mRNA. (3) A distal 3′‐UTR element included by alternate poly(A) site usage represses translation, which can be overridden by the proximal 3′‐UTR element.
Tokio Takaji   +2 more
wiley   +1 more source

Derivation of the Fractional Fokker–Planck Equation for Stable Lévy with Financial Applications

open access: yesMathematics, 2023
This paper aims to propose a generalized fractional Fokker–Planck equation based on a stable Lévy stochastic process. To develop the general fractional equation, we will use the Lévy process rather than the Brownian motion.
Reem Abdullah Aljethi, Adem Kılıçman
doaj   +1 more source

The Spectrum of Heavy Tailed Random Matrices [PDF]

open access: yesCommunications in Mathematical Physics, 2007
Let $X_N$ be an $N\ts N$ random symmetric matrix with independent equidistributed entries. If the law $P$ of the entries has a finite second moment, it was shown by Wigner \cite{wigner} that the empirical distribution of the eigenvalues of $X_N$, once renormalized by $\sqrt{N}$, converges almost surely and in expectation to the so-called semicircular ...
Ben Arous, Gerard, Guionnet, Alice
openaire   +4 more sources

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

open access: yesFEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard   +12 more
wiley   +1 more source

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