Results 21 to 30 of about 169,695 (257)

Is There a Link between Suckling and Manipulation Behavior during Rearing in Pigs?

open access: yesAnimals, 2021
Inadequate possibilities to perform oral manipulation behavior for pigs can lead to misdirection and thus tail biting. Our study aimed to analyze manipulation behaviors of weaner pigs with focus on tail biting and the relationship with agonistic ...
Friederike K. Warns   +4 more
doaj   +1 more source

Dual Divergence Estimators of the Tail Index [PDF]

open access: yesISRN Probability and Statistics, 2012
The main purpose of the present paper is to propose a new estimator of the tail index using -divergences and the duality technique. These estimators are explored with respect to robustness through the influence function approach. The empirical performances of the proposed estimators are illustrated by simulation.
Bouzebda, Salim, Cherfi, Mohamed
openaire   +3 more sources

Correlation analysis of financial assets based on asymmetric copula

open access: yesFrontiers in Applied Mathematics and Statistics, 2022
Based on the asymmetric copula function, this paper analyzes the static and dynamic correlation between Shanghai Composite Index and Shenzhen Composite Index.
Xia Li, Bing Hou
doaj   +1 more source

Tail Risk in Commercial Property Insurance

open access: yesRisks, 2014
We present some new evidence on the tail distribution of commercial property losses based on a recently constructed dataset on large commercial risks. The dataset is based on contributions from Lloyd’s of London syndicates, and provides information on ...
Enrico Biffis, Erik Chavez
doaj   +1 more source

Tail Bounds for the Wiener Index of Random Trees [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2007
Upper and lower bounds for the tail probabilities of the Wiener index of random binary search trees are given. For upper bounds the moment generating function of the vector of Wiener index and internal path length is estimated.
Tämur Ali Khan, Ralph Neininger
doaj   +1 more source

Quantitative Weight and Two-Particle Search Algorithm to Optimize Aero-Stealth Performance of a Backward Inclined Vertical Tail

open access: yesAerospace, 2023
To study the influence of the tilt-back design of a vertical tail on its aerodynamic stealth characteristics, an optimization method based on a quantitative weight coefficient and a two-particle search algorithm is presented.
Zeyang Zhou, Jun Huang
doaj   +1 more source

Semiparametric lower bounds for tail index estimation [PDF]

open access: yesJournal of Statistical Planning and Inference, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Beirlant, J.   +2 more
openaire   +8 more sources

Inferring heavy tails of flood distributions through hydrograph recession analysis [PDF]

open access: yesHydrology and Earth System Sciences, 2023
Floods are often disastrous due to underestimation of the magnitude of rare events. Underestimation commonly happens when the magnitudes of floods follow a heavy-tailed distribution, but this behavior is not recognized and thus neglected for flood hazard
H.-J. Wang   +6 more
doaj   +1 more source

An Integrated Functional Weissman Estimator for Conditional Extreme Quantiles

open access: yesRevstat Statistical Journal, 2019
It is well-known that estimating extreme quantiles, namely, quantiles lying beyond the range of the available data, is a nontrivial problem that involves the analysis of tail behavior through the estimation of the extreme-value index.
Laurent Gardes , Gilles Stupfler
doaj   +1 more source

Application of Morphological Index in the Assesment of Type and Function of Fat Tail Sheep in Sapudi Island

open access: yesBiotropika: Journal of Tropical Biology, 2017
Morphological index could be used to evaluate type and function of livestock. The aim of this study was applying morphological index to assess the type and function of Sapudi fat tail sheep.
A. M Abdurrahman, Setiasih Setiasih
doaj   +1 more source

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