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- Edson Cataldo, Fabiana Rodrigues Leta, Jorge Alfaro Lucero, Lucas Nicolato, Mário Santos Braga
- 2005

The vocal cords play an important role on voice production. Air coming from the lungs is forced through the narrow space between the two vocal cords that are set in motion in a frequency that is… (More)

The aim of this paper is to analyze the uncertainty quantification in a voice production mechanical model and update the probability density function corresponding to the tension parameter using the… (More)

We have reviewed a number of studies of voiced sound articulatory synthesis, but all of them have been conducted using deterministic models. However, real voices are random processes. This paper is… (More)

In this paper we develop some techniques to obtain global hyperbolicity for a certain class of endomorphisms of (R) with p, n ≥ 2. This kind of endomorphisms are obtained from vectorial difference… (More)

- Mário Santos Braga, RJ Brasil, S. Jafari, Marcellus Caldas, Martin Kovár
- 2004

In the present paper, we introduce and study topological properties of θ-derived, θ-border, θ-frontier and θ-exterior of a set using the concept of θ-open sets and study also other properties of the… (More)

- Luiz C.L. Botelho, Mário Santos Braga
- 2009

We consider the problem of infrared divergencies in String theory in Embeddings Manifolds by means of the Nash Theorem of Riemann metrics parametrized by immersions.

- Miguel Caldas, Mário Santos Braga, Ratnesh K. Saraf, Marcellus Caldas, R. K. Saraf
- 2008

In this paper a new generalization of semi-open maps via the concept of sg-closed sets is considered. They are called approximately semi-open maps and are used to obtain a characterization of… (More)

- Miguel Caldas, Mário Santos Braga, Ratnesh Kumar Saraf, Miguel Caldas Cueva
- 2000

The goal of this article is to bring to your attention some of the salient features of recent research on characterizations of Semi − T1/2 spaces.

- Una Nota, Mário Santos Braga, +4 authors Ramireddy Rajeswari
- 2011

The aim of this paper is to define and develop stronger forms of contra-continuous mappings and contra-α-continuous mappings that are known as bi-contra-continuous and bi-contra-α-continuous mappings.

We study the existence of first integrals in nonholonomic systems with symmetry. First we define the concept of M-cotangent lift of a vector field on a manifold Q in order to unify the works… (More)