Results 101 to 110 of about 3,160,245 (302)

Estimating a Ratio of Normal Parameters

The Annals of Statistics, 1985
Let \(x_ 1,...,x_ n\) (n\(\geq 2)\) be a sample from a normal distribution with mean \(\xi\) and variance \(\sigma^ 2\). The parameter \(\theta =\xi /\sigma^{2p}\) is to be estimated with loss function \(L(\xi,\sigma,\delta)=(\theta -\delta)^ 2\sigma^{4p-2}\). Consider estimators \(CX/S^ p\) where X is the sample mean and \(S=\sum^{n}_{j=1}(x_ j-\bar X)
openaire   +3 more sources

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Estimation of finite population mean using known correlation coefficient between auxiliary characters

Statistica, 2013
This paper proposes a modified ratio-cum-product estimator of finite population mean of the study variate Y using known correlation coefficient between two auxiliary characters X1 and X2.
Housila P. Singh, R. Tailor
doaj   +1 more source

Likelilood ratio gradient estimation [PDF]

Proceedings of the 19th conference on Winter simulation - WSC '87, 1987
The likelihood ratio method for gradient estimation is briefly surveyed. Two applications settings are described, namely Monte Carlo optimization and statistical analysis of complex stochastic systems. Steady-state gradient estimation is emphasized, and both regenerative and non-regenerative approaches are given.
openaire   +2 more sources

Model-assisted nonnegative variance estimator of the ratio estimator under the Midzuno-Sen sampling scheme [PDF]

, 2012
This article suggests a model-assisted variance estimator for the ordinary ratio estimator under the Midzuno-Sen sampling scheme. To compare the suggested estimator empirically with available estimators a Monte Carlo comparison is carried out using real ...
Jigna S Patel, Praful A Patel, Patel, Praful A, Patel, Jigna S   +3 more
core   +1 more source

ABL kinase‐dependent phosphorylation of SH proteins promotes their direct interaction with CRK family SH2 domains

FEBS Letters, EarlyView.
CT10 regulator of kinase (CRK) and CRK‐Like (CRKL) are signaling adaptors driving cell adhesion, motility, differentiation, and proliferation. SH2‐domain containing (SH) proteins are enriched in YXXP motifs which when phosphorylated create preferred binding sites for CRK family SH2 domains.
Phoebe M. Cousens, Brendan W. Chandler, Anna M. Schmoker, Jaye L. Weinert, Charlotte A. Kearns, Warren T. Yacawych, Amila Šemić, Alicia M. Ebert, Bryan A. Ballif   +8 more
wiley   +1 more source

A General Class of Dual to Ratio Estimator

, 2020
In this paper we have considered the problem of estimating the population mean using auxiliary information in sample surveys. A class of dual to ratio estimators has been defined.
Nigam, Pragati, Singh, Housila Prasad
core   +1 more source

Investigating transcription factor dynamics in health and disease using FRAP

FEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj, Carolina Vazquez Garzon, Jose Joaquin Velasco, Janine N. Post   +3 more
wiley   +1 more source

An effective and economic estimation of population mean in stratified random sampling using a linear cost function

Heliyon
Improvement in the estimation of population mean has been an area of interest in sampling theory. So many estimators have been suggested for elevated estimation of the population mean in stratified random sampling, but there is still a gap for more ...
Abdullah A. Zaagan, Mukesh Kumar Verma, Ali M. Mahnashi, Subhash Kumar Yadav, Abdullah Ali H. Ahmadini, Mutum Zico Meetei, Rahul Varshney   +6 more
doaj   +1 more source

Neutrosophic Exponential Ratio-Type Estimator for Finite Population Mean [PDF]

Neutrosophic Sets and Systems
This paper proposes a neutrosophic exponential-type estimator for finite population mean estimation using auxiliary variables. Traditional statistical estimators often fall short when handling vague or uncertain data.
Anisha Taneja, Sachin Malik, Prem Shankar Jha   +2 more
doaj   +1 more source