Results 31 to 40 of about 369,033 (293)

An Unbiased Estimator of Finite Population Mean Using Auxiliary Information

open access: yesJournal of Statistical Theory and Applications (JSTA), 2021
In this paper, an unbiased estimator is constructed by using a linear combination of an estimator of study variable and mean per unit estimator of an auxiliary variable under simple random sampling without replacement scheme.
B. Mahanty, G. Mishra
doaj   +1 more source

Non-Data-Aided Parameter Estimation in an Additive White Gaussian Noise Channel

open access: yes, 2005
Non-data-aided (NDA) parameter estimation is considered for binary-phase-shift-keying transmission in an additive white Gaussian noise channel. Cramer-Rao lower bounds (CRLBs) for signal amplitude, noise variance, channel reliability constant and bit ...
Brannstrom, Fredrik, Rasmussen, Lars K.
core   +2 more sources

An Alternative Ratio-cum-Product Estimator of Population Mean Using a Coefficient of Kurtosis for Two Auxiliary Variates

open access: yesData Science Journal, 2010
An alternative ratio-cum-product estimator of population mean using the coefficient of kurtosis for two auxiliary variates has been proposed. The proposed estimator has been compared with a simple mean estimator, the usual ratio estimator, a product ...
Rajesh Tailor   +2 more
doaj   +1 more source

Nonparametric estimation of the local Hurst function of multifractional Gaussian processes

open access: yes, 2012
A new nonparametric estimator of the local Hurst function of a multifractional Gaussian process based on the increment ratio (IR) statistic is defined.
Ayache   +22 more
core   +5 more sources

ESTIMATING THE HEDGE RATIOS [PDF]

open access: yesCBU International Conference Proceedings, 2016
This paper examines the problem of hedging portfolio returns. Many practitioners and academicians endeavor to solve the problem of how to calculate the optimal hedge ratio accurately. In this paper we compare estimates of the hedge ratio from a classical approach of a linear quantile regression, based on selected quantiles as medians, with that of a ...
Mária Bohdalová, Michal Greguš
openaire   +1 more source

The Efficiency of a Ratio Product Estimator in the Estimation of the Finite Population Coefficient of Variation

open access: yesEngineering Proceedings, 2023
Ratio product estimators have been proposed by several authors for the estimation of the population mean and population variance, but very few authors have proposed ratio product estimators for the estimation of the population coefficient of variation ...
Yahaya Zakari   +5 more
doaj   +1 more source

A PRSZT Registry Analysis of Prognostic Factors Influencing Survival and Relapse Rates After Second Allogeneic Hematopoietic Stem Cell Transplantation in Pediatric Acute Lymphoblastic Leukemia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT A second allogeneic (allo‐)hematopoietic stem cell transplantation (HSCT2) is a potential curative option for pediatric patients with acute lymphoblastic leukemia (ALL) following relapse after first allogeneic transplantation (HSCT1), but its efficacy is limited by high relapse rates and transplant‐related toxicity in highly pretreated ...
Ava Momm   +10 more
wiley   +1 more source

Impact of Auxiliary Information and Measurement Errors on Mean Estimation with Mixture Optional Enhanced Trust (MOET) Randomized Response Model

open access: yesAxioms
Randomized response technique (RRT) surveys are designed to secure honest answers to sensitive questions. In this study, we consider the important issue of measurement error (ME).
Michael Parker, Sat Gupta, Sadia Khalil
doaj   +1 more source

Estimation of employed persons in the case of sample rotation

open access: yesLietuvos Matematikos Rinkinys, 2008
The aim of the paper – to investigate effectiveness of the ratio estimator in the labour force survey in the case of the simple random sampling with rotation.
Viktoras Chadyšas   +1 more
doaj   +1 more source

CPX‐351 in High‐Risk Relapsed Pediatric Acute Leukemia: Real‐World Phase 1 Data Establishing the FDA‐Approved Dose

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Outcomes for pediatric relapsed/refractory (R/R) acute myeloid leukemia (AML) remain dismal. CPX‐351, a liposomal formulation of cytarabine and daunorubicin, may have less off‐target toxicities than traditional chemotherapies and has shown improved outcomes for adults with newly diagnosed therapy‐related AML.
Jonathan D. Bender   +17 more
wiley   +1 more source

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