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Analysis of dengue fever outbreak by generalized fractional derivative
(2020)
In this paper, we use the generalized fractional derivative in order to study the fractional differential equation associated with a fractional Gaussian model. Moreover, we propose new properties of generalized differential ...
A fractional calculus model for HIV dynamics: real data, parameter estimation and computational strategies
(2021-11-01)
This work deals with mathematical modeling applied to the Human Immunodeficiency Virus. Mathematical aspects analysis is presented, discussed and reviewed. A new model based on the Fractional Calculus theory is proposed. ...
A study on congruency effects and numerical distance in fraction comparison by expert undergraduate students
(Frontiers Media, 2020)
School mathematics comprises a diversity of concepts whose cognitive complexity is still poorly understood, a chief example being fractions. These are typically taught in middle school, but many students fail to master ...
Are active organic matter fractions suitable indices of management effects on soil carbon? A meta-analysis of data from the Pampas
(Taylor & Francis, 2016-03)
Active fractions of organic matter have been proposed as early indices of changes in soil organic carbon (organic-C) induced by management. We performed a meta-analysis of published results from 31 field experiments conducted ...
Assessing influence in survival data with a cure fraction and covariates
(INST ESTADISTICA CATALUNYA-IDESCAT, 2008)
Diagnostic methods have been an important tool in regression analysis to detect anomalies, such as departures from error assumptions and the presence of outliers and influential observations with the fitted models. Assuming ...
A fractional Laplace equation: Regularity of solutions and finite element approximations
(Society for Industrial and Applied Mathematics, 2017-01)
This paper deals with the integral version of the Dirichlet homogeneous fractional Laplace equation. For this problem weighted and fractional Sobolev a priori estimates are provided in terms of the Holder regularity of the ...
Middle Schoolers’ Biases and Strategies in a Fraction Comparison Task
(Springer Netherlands, 2019)
© 2018, Ministry of Science and Technology, Taiwan.The present study uses a short, computerized task to investigate individual differences among middle school students in terms of the intuitions and strategies that they ...
Cement rotary kiln model using fractional identification
This paper proposes the fractional order model of a
cement rotatory kiln. The model consists of two parts: static and
dynamic. The static part depends on the energy balance and the way
how the heat is distributed around ...
Generalized log-gamma regression models with cure fraction
(SPRINGER, 2009)
In this paper, the generalized log-gamma regression model is modified to allow the possibility that long-term survivors may be present in the data. This modification leads to a generalized log-gamma regression model with ...