research

Publications

Publications

1995

Negative Isotropic Eddy Viscosity: a Common Phenomenon in two Dimensions

Navier—Stokes Equations and Related Nonlinear Problems | 1995 | incollection

M Vergassola

U Frisch

1995

On the Steinitz Exchange Lemma

Discrete Mathematics | 1995 | misc
1995

Performance of a QR algorithm implementation on a multicluster of transputers

Computing Systems in Engineering | 1995 | article
1995

The spectral analysis of heart rate variability. a comparative study between nonparametric and parametric spectral analysis in short series [Análise espectral da variabilidade da frequência cardíaca. Estudo comparativo entre a análise espectral não paramétrica e paramétrica em séries curtas.]

Revista portuguesa de cardiologia : orgao oficial da Sociedade Portuguesa de Cardiologia = Portuguese journal of cardiology : an official journal of the Portuguese Society of Cardiology | 1995 | article

AF de Freitas

J Freitas

J Puig

MJ Carvalho

O Costa

P Lago

1995

The two-dimensional Navier-Stokes-Kuramoto-Sivashinsky equation on the connection machine

Computing Systems in Engineering | 1995 | article

U Frisch

1995

The Word Problem For Nilpotent Inverse Monoids

Semigroup Forum | 1995 | article
1995

Two-Dimensional Isotropic Negative Eddy Viscosity: a Common Phenomenon

Fluid Mechanics and Its Applications - Advances in Turbulence V | 1995 | incollection

M Vergassola

U Frisch

1995

Weak Limiting Behavior of a Simple Tail Pareto-index Estimator

Journal of Statistical Planning and Inference | 1995 | article

JN BACRO

1994

A Classification of Aperiodic Power Monoids

Journal of Algebra | 1994 | article
1994

Approximate filters for a nonlinear discrete time filtering problem with small observation noise

Stochastics and Stochastic Reports | 1994 | article
1994

Comparative study of two different fluconazole dosages as anti-fungal prophylaxis in neutropenic patients [ESTUDO COMPARATIVO DE DUAS DOSES DE FLUCONAZOL NA PROFILAXIA DE INFECCOES FUNGICAS EM DOENTES NEUTROPENICOS]

Arquivos de Medicina | 1994 | article

A Costa

A Lameirao

AM Maia

C Granato

F Baptista

F Trigo

JA Paiva

MJ Parreira

R Milheiro

S Santos

T Brandao

V Alves

1994

Convolutional Ring Cα

The Hypergeometric Approach to Integral Transforms and Convolutions | 1994 | incollection

YF Luchko

1994

Heart-rate-variability As An Assessment of Brain-death

Journal of the American College of Cardiology | 1994 | misc

AF FREITAS

J FREITAS

J PUIG

J TEIXEIRA

M CARVALHO

O COSTA

P LAGO

1994

Heart-rate-variability in 24-hour Holter Recordings - Comparative-study Between Short-term and Long-term Time-domain and Frequency-domain Analyses

Journal of Electrocardiology | 1994 | article

A BRANDAO

A FREITAS

F DEFREITAS

J FREITAS

J PUIG

MJ CARVALHO

O COSTA

P LAGO

1994

Invariant Theory-like Theorems For Matroids and Oriented Matroids

Advances in Mathematics | 1994 | article
1994

Local Helicity, a Material Invariant For the Odd-dimensional Incompressible Euler Equations

Solar and Planetary Dynamos | 1994 | inproceedings

U FRISCH

1994

Mode Interactions With Spherical-symmetry

International Journal of Bifurcation and Chaos | 1994 | article
1994

Negative Eddy Viscosity in Isotropically Forced 2-dimensional Flow - Linear and Nonlinear Dynamics

Journal of Fluid Mechanics | 1994 | article

M VERGASSOLA

U FRISCH

1994

Preliminaries

The Hypergeometric Approach to Integral Transforms and Convolutions | 1994 | incollection

YF Luchko

1994

Proving the Existence of Negative Isotropic Eddy Viscosity

Solar and Planetary Dynamos | 1994 | inproceedings

M VERGASSOLA

U FRISCH

1994

Reduced Factorizations in Free Profinite Groups and Join Decompositions of Pseudovarieties

Ijac | 1994 | article

P Weil

1994

Slow-down of Nonlinearity in 2-d Navier-stokes Flow

Physica D | 1994 | article

M VERGASSOLA

1994

The Betti Numbers of the Moduli Space of Stable Rank 3 Higgs Bundles on a Riemann Surface

Int. J. Math. - International Journal of Mathematics | 1994 | article
1994

The Hypergeometric Approach to Integral Transforms and Convolutions

1994 | book

YF Luchko

1993

A Unified Syntactic Approach To Theorems of Putcha, Margolis, and Straubing on Finite Power Semigroups

Semigroup Forum | 1993 | article