Results 41 to 50 of about 129,468 (185)

An Accurate Approximation to the Distribution of a Linear Combination of Non-Central Chi-Square Random Variables

Revstat Statistical Journal, 2013
This paper provides an accessible methodology for approximating the distribution of a general linear combination of non-central chi-square random variables. Attention is focused on the main application of the results, namely the distribution of positive
Hyung-Tae Ha
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Surveyor and analyst biases in forest density estimation from United States Public Land Surveys

Ecosphere, 2023
Accurate forest density estimates based on United States Public Land Surveys have long been questioned because of doubts about randomness of both the surveyors' selection of witness trees and the underlying tree dispersion.
Charles V. Cogbill
doaj   +1 more source

Undergraduate students do not understand some library jargon typically used in library instruction

Evidence Based Library and Information Practice, 2006
A review of: Hutcherson, Norman B. “Library Jargon: Student Recognition of Terms and Concepts Commonly Used by Librarians in the Classroom.” College and Research Libraries 65.4 (July 2004): 349-54.
Lorie Andrea Kloda
doaj   +1 more source

Saddlepoint approximation for moment generating functions of truncated random variables

, 2005
We consider the problem of approximating the moment generating function (MGF) of a truncated random variable in terms of the MGF of the underlying (i.e., untruncated) random variable.
Butler, Ronald W., Wood, Andrew T. A.
core   +1 more source

Fourier domain preconditioned conjugate gradient algorithm for atmospheric tomography [PDF]

, 2006
By 'atmospheric tomography' we mean the estimation of a layered atmospheric turbulence profile from measurements of the pupil-plane phase (or phase gradients) corresponding to several different guide star directions.
Ellerbroek, Brent L., Vogel, Curtis R., Yang, Qiang   +2 more
core   +1 more source

Goodness-of-fit Testing for Left-truncated Two-parameter Weibull Distributions with Known Truncation Point

Austrian Journal of Statistics, 2016
The left-truncated Weibull distribution is used in life-time analysis, it has many applications ranging from financial market analysis and insurance claims to the earthquake inter-arrival times.
Ayse KIZILERSU, Markus Kreer, Anthony W. Thomas   +2 more
doaj   +1 more source

Wavefunction Statistics using Scar States

, 2003
We describe the statistics of chaotic wavefunctions near periodic orbits using a basis of states which optimise the effect of scarring. These states reflect the underlying structure of stable and unstable manifolds in phase space and provide a natural ...
Antonsen, Berry, Bies, Bogomolny, Bogomolny, Bohigas, Bäcker, Creagh, de Polavieja, Heller, Kaplan, Kaplan, Kaplan, Kaplan, Kaplan, Klakow, Li, McDonald, Narimanov, Nonnenmacher, Prosen, Rivas, Schnirelman, Schnirelman, Simonotti, Soo-Young Lee, Stephen C. Creagh, Tualle, Vergini, Vergini, Vergini, Vergini, Wisniacki   +32 more
core   +2 more sources

Properties of galaxy halos in Clusters and Voids [PDF]

, 2001
We use the results of a high resolution N-body simulation to investigate the role of the environment on the formation and evolution of galaxy-sized halos.
Antonuccio-Delogu, V., Becciani, U., Colafrancesco, S., Gambera, M., Germana', A., Pagliaro, A., Romeo, A. B., van Kampen, E.   +7 more
core   +2 more sources

Adaptive Robust Watermarking for Large Language Models via Dynamic Token Embedding Perturbation

IEEE Access
Large Language Models (LLMs) have demonstrated remarkable capabilities in generating high-quality text, raising significant concerns regarding copyright protection and content provenance verification.
Ziyang Zeng, Han Lin, Shuxin Zhang, Boyuan Wang   +3 more
doaj   +1 more source

Statistical Identification of Parameters for Damaged FGM Structures with Material Uncertainties in Thermal Environment

Complexity, 2018
Considering that the statistic numerical characteristics are often required in the probability-based damage identification and safety assessment of functionally graded material (FGM) structures, an stochastic model updating-based inverse computational ...
Yalan Xu, Yu Qian, Kongming Guo
doaj   +1 more source