FC - DM | Documentos por Auto-Depósito
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- Equality of immanantal decomposable tensors, IIPublication . Cruz, Henrique F. Da; Silva, J. A. Dias daWe state a necessary and sufficient condition for equality of nonzero decomposable symmetrized tensors when the symmetrizer is associated to an irreducible character of the symmetric group of degree m.
- Cross Additivity in Balanced Cross Nesting ModelsPublication . Ferreira, Sandra S.; Ferreira, Dário; Mexia, João T.Commutative Jordan Algebras were used to cary out inference for mixed models with balanced cross nesting in wich the variance componentes for interactions between sets of fixed effects and random effects are null.
- Double tier cross nesting design modelsPublication . Ferreira, Sandra S.; Ferreira, Dário; Mexia, João T.Inference is presented, first for balanced cross nesting models and then for the corresponding two tier models. These models are obtained nesting all the treatments of one model inside each treatment of the other model. An application is presented and the algebraic structure of the models is discussed using Commutative Jordan Algebras.
- Characterizations of Laguerre-Hahn affne orthogonal polynomials on the unit circlePublication . Branquinho, A.; Rebocho, M. N.In this work we characterize a monic polynomial sequence, orthogonal with respect to a hermitian linear functional [...]
- Coherent pairs of linear functionals on the unit circlePublication . Branquinho, A.; Foulquie-Moreno, Ana; Marcellan, Francisco; Rebocho, M. N.In this paper we extend the concept of coherent pairs of measures from the real line to Jordan arcs and curves. [...]
- Distributional equation for Laguerre- Hahn functionals on the unit circlePublication . Branquinho, A.; Rebocho, M. N.Let u be a hermitian linear functional defined in the linear space of Laurent polynomials and F its corresponding Carathéodory function. [...]
- Inference forLorthogonal modelsPublication . Ferreira, Sandra S.; Ferreira, Dário; Moreira, Elsa E.; Mexia, João T.We generalize the class of linear mixed models when normality is assumed.
- On differential equations for orthogonal polynomials on the unit circlePublication . Branquinho, A.; Rebocho, M. N.In this paper we characterize sequences of orthogonal polynomials on the unit circle whose corresponding Carathéodory function satisfies a Riccati differential equation with polynomial coefficients, in terms of second order matrix differential equations.
- Exact Estimators for Normal Linear Mixed ModelsPublication . Ferreira, Sandra S.; Ferreira, Dário; Moreira, Elsa; Mexia, João T.
- Maximum Likelihood Estimation Methods for Variance Components in Linear Non-Orthogonal Small Size Design ModelsPublication . Ferreira, Dário; Ferreira, Sandra S.; Nunes, Célia; Mexia, João T.We compare four Maximum Likelihood Estimation methods for estimating variance components in normal linear mixed models, in the case of unbalanced small size design models: The Newton-Raphson, the Triple Minimization, the Gradient and a method where the starting points for the Newton-Raphson are the estimates obtained with the Triple Minimization method.