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السجلات المعروضة 591 -- 600 من 649
History of primary-series and booster vaccination and protection against Omicron reinfection
(
American Association for the Advancement of Science
, 2023 , Article)
Laboratory evidence suggests a possibility of immune imprinting for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. We investigated the differences in the incidence of SARS-CoV-2 reinfection in a ...
Characterizing the effective reproduction number during the COVID-19 pandemic: Insights from Qatar's experience
(
Edinburgh University Global Health Society
, 2022 , Article)
Background The effective reproduction number, Rt, is a tool to track and understand pandemic dynamics. This investigation of Rt estimations was conducted to guide the national COVID-19 response in Qatar, from the onset of ...
Characterization of regulatory sequences in alternative promoters of hypermethylated genes associated with tumor resistance to cisplatin
(
Spandidos Publications
, 2014 , Article)
The development of cisplatin resistance in human cancers is controlled by multiple genes and leads to therapeutic failure. Hypermethylation of specific gene promoters is a key event in clinical resistance to cisplatin. ...
Application of Balanced Acceptance Sampling to an Intertidal Survey
(
De Gruyter Open Ltd
, 2017 , Article)
In ecological studies, the population of interest is often spread over a large area. In these studies, obtaining a sample with good spatial coverage is an important feature in the design of a survey. In most cases adjacent, ...
A new approach to predicting cryptocurrency returns based on the gold prices with support vector machines during the COVID-19 pandemic using sensor-related data
(
MDPI
, 2021 , Article)
In a real-world situation produced under COVID-19 scenarios, predicting cryptocurrency returns accurately can be challenging. Such a prediction may be helpful to the daily economic and financial market. Unlike forecasting ...
Fixed point results for generalized chatterjea type contractive conditions in partially ordered G-metric spaces
(
Hindawi Publishing Corporation
, 2014 , Article)
In the framework of ordered G -metric spaces, fixed points of maps that satisfy the generalized Chatterjea type contractive conditions are obtained. The results presented in the paper generalize and extend several well ...
Investigating the individual interests of undergraduate students in STEM disciplines
(
Frontiers Media SA
, 2024 , Article)
Despite massive investments in the education sector to empower youth in Qatar, a vital concern remains to retain students in science, technology, engineering, and mathematics (STEM) disciplines at the undergraduate level. ...
The motion of a point vortex in multiply-connected polygonal domains
(
Multidisciplinary Digital Publishing Institute (MDPI)
, 2020 , Article)
We study the motion of a single point vortex in simply-and multiply-connected polygonal domains. In the case of multiply-connected domains, the polygonal obstacles can be viewed as the cross-sections of 3D polygonal ...
Improved Likelihood Inference Procedures for the Logistic Distribution
(
MDPI
, 2022 , Article)
We consider third-order likelihood inferences for the parameters, quantiles and reliability function of the logistic distribution. This theory involves the conditioning and marginalization of the likelihood function. The ...
Isoperimetric properties of condenser capacity
(
Elsevier
, 2021 , Article)
For compact subsets E of the unit disk D we study the capacity of the condenser (D,E) by means of set functionals defined in terms of hyperbolic geometry. In particular, we study experimentally the case of a hyperbolic ...