Results 21 to 30 of about 359,536 (206)

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

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-Preserving Estimation of Intensity Values Obtained From Omics Experiments

open access: yesFrontiers in Genetics, 2019
Faced with the lack of reliability and reproducibility in omics studies, more careful and robust methods are needed to overcome the existing challenges in the multi-omics analysis.
Adèle H. Ribeiro   +2 more
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  

Model Uncertainty in Operational Risk Modeling Due to Data Truncation: A Single Risk Case

open access: yesRisks, 2017
Over the last decade, researchers, practitioners, and regulators have had intense debates about how to treat the data collection threshold in operational risk modeling.
Daoping Yu, Vytaras Brazauskas
doaj   +1 more source

Delta Methods in Enveloping Rings, II

open access: yesJournal of Algebra, 1993
Let \(L\) be a Lie algebra over a field of characteristic 0 with universal enveloping algebra \(U(L)\) and let \(L\) act as derivations on an associative algebra \(R\). Let \(\Delta_ L\) be the join of the finite- dimensional ideals of \(L\). In the first part of this paper [ibid.
Bergen, J., Passman, D.S.
openaire   +2 more sources

Golubev Delta Sieve Factoring Method [PDF]

open access: yes
We introduce a new integer factorization method based on modular arithmetic and structured search. The Golubev Delta Sieve method iterates over arithmetic progressions of the form D = 30n + δ and tests whether m² = D² + 4N yields a perfect square. By precomputing and filtering valid δ values using modular constraints, the method significantly reduces ...
Igor Golubev
openaire   +2 more sources

An Entropy-Based Contagion Index and Its Sampling Properties for Landscape Analysis

open access: yesEntropy, 2014
Studies of spatial patterns of landscapes are useful to quantify human impact, predict wildlife effects, or describe various landscape features. A robust landscape index should quantify two components of landscape diversity: composition and configuration.
Bernard R. Parresol, Lloyd A. Edwards
doaj   +1 more source

Mutations in SRD5B1 (AKR1D1), the gene encoding Delta(4)-3-oxosteroid 5 beta-reductase, in hepatitis and liver failure in infancy [PDF]

open access: yes, 2003
Background: A substantial group of patients with cholestatic liver disease in infancy excrete, as the major urinary bile acids, the glycine and taurine conjugates of 7alpha-hydroxy-3-oxo-4-cholenoic acid and 7alpha, 12alpha-dihydroxy-3- oxo-4-cholenoic ...
Duran, M.   +17 more
core   +1 more source

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