Buscar
Mostrando ítems 1-10 de 3297
Hamilton-Jacobi approach for first order actions and theories with higher derivatives
(Academic Press Inc. Elsevier B.V., 2008-03-01)
In this work, we analyze systems described by Lagrangians with higher order derivatives in the context of the Hamilton-Jacobi formalism for first order actions. Two different approaches are studied here: the first one is ...
Hamilton-Jacobi approach for first order actions and theories with higher derivatives
(Academic Press Inc. Elsevier B.V., 2008-03-01)
In this work, we analyze systems described by Lagrangians with higher order derivatives in the context of the Hamilton-Jacobi formalism for first order actions. Two different approaches are studied here: the first one is ...
Inverse probability tilting for moment condition models with missing data
(Oxford Univ Press, 2012-07)
We propose a new inverse probability weighting (IPW) estimator for moment condition models with missing data. Our estimator is easy to implement and compares favourably with existing IPW estimators, including augmented IPW ...
Hamilton-Jacobi approach for first order actions and theories with higher derivatives
(Academic Press Inc. Elsevier B.V., 2013)
Parasitic assemblages on leafminers: a comparison of structure and function among host Orders
(Taylor & Francis Ltd, 2011-04)
In this study we ask whether parasitic complexes of leafminers display differences associated to host order, by comparing species number, taxonomic composition, parasitism rates and host ranges in parasitoid assemblages ...
Renormalization in a Lorentz-violating model and higher-order operators
(2018)
The renormalization in a Lorentz-breaking scalar-spinor higher-derivative model involving phi(4) self-interaction and the Yukawa-like coupling is studied. We explicitly de-monstrate that the convergence is improved in ...
Using generic order moments for separation of dependent sources with linear conditional expectations
(European Association For Signal Processing, 2013)
In this work, we approach the blind separation of dependent sources based only on a set of their linear mixtures. We prove that, when the sources have a pairwise dependence characterized by the linear conditional expectation ...
Why should the pharmaceutical industry claim for the implementation of second-order chemometric models: A critical review
(Elsevier Science, 2020-02)
Today, pharmaceutical products are submitted to a large number of analytical tests, planned to either ensure or construct their quality. The official methods of analysis used to perform these determinations are very different ...
Higher-Order Partial Least Squares (HOPLS) : a generalized multi-linear regression method
(IEEE Computer Society, 2013-07)
A new generalized multilinear regression model, termed the Higher-Order Partial Least Squares (HOPLS), is introduced with the aim to predict a tensor (multiway array) Y from a tensor X through projecting the data onto the ...
Limit cycles in planar piecewise linear differential systems with nonregular separation line
(2016-12-15)
In this paper we deal with planar piecewise linear differential systems defined in two zones. We consider the case when the two linear zones are angular sectors of angles α and 2π−α, respectively, for α∈(0,π). We study the ...