Results 61 to 70 of about 2,235,965 (245)

Free Metaplectic K-Wigner Distribution: Uncertainty Principles and Applications

open access: yesFractal and Fractional
This study focuses on a novel parameterized Wigner distribution, which is an organic integration of the free metaplectic Wigner distribution and the K-Wigner distribution.
Long Wang   +3 more
doaj   +1 more source

Generalized distributions of order k associated with success runs in Bernoulli trials

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
In a sequence of independent Bernoulli trials, by counting multidimensional lattice paths in order to compute the probability of a first-passage event, we derive and study a generalized negative binomial distribution of order k, type I, which extends to ...
Gregory A. Tripsiannis   +2 more
doaj   +1 more source

Inference Based on k-Record Values from Generalized Exponential Distribution

open access: yesStatistica, 2018
In this paper, the lower k-record values arising from a two parameter generalized exponential distribution is considered. The maximum likelihood estimators for the shape parameter and scale parameter are obtained.
Manoj Chacko, Laji Muraleedharan
doaj   +1 more source

Impact of Metastatic Patterns on Survival and Response to Therapy in Neuroblastoma

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background While the presence of metastases in neuroblastoma (NB) is a well‐established prognostic factor, the clinical significance of dissemination patterns and tumour burden and their impact on response and survival remains poorly understood.
Mariona Morell‐Daniel   +15 more
wiley   +1 more source

Bias of group generators in finite and profinite groups: known results and open problems [PDF]

open access: yesInternational Journal of Group Theory, 2015
We analyze some properties of the distribution Q G,k of the first component in a k -tuple chosen uniformly‎ ‎in the set of all the k -tuples generating a finite group G (the limiting distribution of the product replacement algorithm)‎. ‎In particular‎,
Eleonora Crestani, Andrea Lucchini
doaj  

On the conditional distribution of a multivariate Normal given a transformation – the linear case

open access: yesHeliyon, 2019
We show that the orthogonal projection operator onto the range of the adjoint T⁎ of a linear operator T can be represented as UT, where U is an invertible linear operator. Given a Normal random vector Y and a linear operator T, we use this representation
Rajeshwari Majumdar, Suman Majumdar
doaj   +1 more source

Sociodemographic Factors Associated With Later Stage at Diagnosis of Pediatric Germ Cell Tumors: A Report From Children's Oncology Group Registries ACCRN07 and APEC14B1

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Germ cell tumors (GCTs) often arise in the ovaries and testes (extracranial) but can also develop in the brain (intracranial). We examined the relationship of individual, family, and community‐level socioeconomic status (SES) with stage of disease at diagnosis in a cohort of pediatric patients with GCT from Children's Oncology Group
Heydon K. Kaddas   +7 more
wiley   +1 more source

Ultrasonic Echosignal Applied to Human Skin Lesions Characterization

open access: yesArchives of Acoustics, 2013
The paper presents a classification of the healthy skin and the skin lesions (basal cell carcinoma) basing on a statistics of the envelope of ultrasonic echoes. The echoes envelopes distributions were modeled using Rayleigh and K-distribution.
Hanna PIOTRZKOWSKA   +3 more
doaj  

La loi de Pascal restreinte et ses cas particuliers; Constrained Pascal distribution and its special cases [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2012
Pascal distribution, Pa(r, /pi), also called Negative binomial distribution, pertains to the trial number n at which the first r successes have been obtained, each trial being the realization of a Bernoulli variable with success probability /pi.
Louis Laurencelle
doaj  

Have Gender Gaps in Math Closed? Achievement, Teacher Perceptions, and Learning Behaviors Across Two ECLS-K Cohorts

open access: yesAERA Open, 2016
Studies using data from the Early Childhood Longitudinal Study–Kindergarten Class of 1998–1999 (ECLS-K:1999) revealed gender gaps in mathematics achievement and teacher perceptions.
Joseph R. Cimpian   +4 more
doaj   +1 more source

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