Results 11 to 20 of about 326,141 (263)

Beyond the delta method

open access: yes, 2022
We give an asymptotic development of the maximum likelihood estimator (MLE), or any other estimator defined implicitly, in a way which involves the limiting behavior of the score and its higher-order derivatives. This development, which is explicitly computable, gives some insights about the non-asymptotic behavior of the renormalized MLE and its ...
Lejay, Antoine, Mazzonetto, Sara
openaire   +3 more sources

An analytical method for q−fractional dynamical equations on time scales

open access: yesPartial Differential Equations in Applied Mathematics, 2023
In this paper, we introduce the delta q−Laplace transform on a time scale and investigate some of its properties. We discuss some important properties of fractional delta q−calculus. Then, based on these properties and the q−Laplace transform, we propose
Nada K. Mahdi, Ayad R. Khudair
doaj   +1 more source

RT-LAMP assay for rapid detection of the R203M mutation in SARS-CoV-2 Delta variant

open access: yesEmerging Microbes and Infections, 2022
The highly infectious Delta variant strain of SARS-CoV-2 remains globally dominant and undermines COVID-19 vaccines. Rapid detection of the Delta variant is crucial for the identification and quarantine of infected individuals. In this study, our aim was
Jianing Yang   +8 more
doaj   +1 more source

Large Sample Comparison of Parameter Estimates in Gamma Raindrop Distributions

open access: yesAtmosphere, 2020
Raindrop size distributions have been characterized through the gamma family. Over the years, quite a few estimates of these gamma parameters have been proposed. The natural question for the practitioner, then, is what estimation procedure should be used.
Roger W. Johnson, Donna V. Kliche
doaj   +1 more source

On Tuning PI Controllers for Integrating Plus Time Delay Systems [PDF]

open access: yesModeling, Identification and Control, 2010
Some analytical results concerning PI controller tuning based on integrator plus time delay models are worked out and presented. A method for obtaining PI controller parameters, Kp=alpha/(k*tau), and, Ti=beta*tau, which ensures a given prescribed maximum
David Di Ruscio
doaj   +1 more source

Food sorting Delta robot positioning and grasping technology based on binocular vision

open access: yesShipin yu jixie, 2022
Objective: Solve the problems of poor positioning accuracy and low grasping success rate of the Delta robot in food sorting, and improve the robot's flexible grasping ability.
MI Xi-feng   +3 more
doaj   +1 more source

Variance models of the last age interval and their impact on life expectancy at subnational scales

open access: yesDemographic Research, 2016
Background: The Chiang method is the most widely accepted standard for estimating life expectancy (LE) at subnational scales; it is the only method that provides an equation for the LE variance.
Ernest Lo   +3 more
doaj   +1 more source

A Study on the Optimal Ratio of Research and Development Investment in the Energy Sector: An Empirical Analysis in South Korea

open access: yesEnergies, 2019
The necessity for energy research and development (ER&D) is increasing as greenhouse gases and climate change are becoming global issues. To support sustainable economic growth through ER&D, it is necessary to examine the optimal ratio of ER& ...
Juyong Lee, Youngsang Cho, Jungwoo Shin
doaj   +1 more source

Estimation of the Binominal Distribution Parameters Using the Method of Moments and Its Asymptotic Properties [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2016
The problem of estimating the parameters m and p of the binomial distribution for a sample having the fixed volume n with the help of the method of moments is considered in this paper.
A.N. Safiullina
doaj  

A Penalized Likelihood Approach to Parameter Estimation with Integral Reliability Constraints

open access: yesEntropy, 2015
Stress-strength reliability problems arise frequently in applied statistics and related fields. Often they involve two independent and possibly small samples of measurements on strength and breakdown pressures (stress).
Barry Smith   +3 more
doaj   +1 more source

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