#### Filter Results:

- Full text PDF available (14)

#### Publication Year

1964

2017

- This year (2)
- Last 5 years (8)
- Last 10 years (15)

#### Publication Type

#### Co-author

#### Journals and Conferences

#### Key Phrases

Learn More

Residual-free bubbles have been recently introduced in order to compute optimal values for the stabilization methods a la Hughes-Franca. However, unless in very special situations, (one-dimensional problems, limit cases, etc.) they require the actual solution of PDE problems (the bubble problems) in each element. Thus they are very diicult to be used in… (More)

- L Riva, C Ronchini, +15 authors P G Pelicci
- Blood cancer journal
- 2013

Mutated Gene PML-RARA NPM1 + NK-NPM1 Complex karyotype CBFB/ MYH11 MLL-X Trisomy 8 RUNX1/ RUNX1T1 Other Total a TCGA FLT3 9 32 9 1 3 2 1 1 5 63 x CSMD1 3 1 0 1 0 0 0 0 1 6 WT1 3 5 5 0 1 1 0 0 2 17 x DDR2 2 0 1 0 0 0 0 0 0 3 KRAS 2 3 2 2 0 0 1 0 1 11 x CALR 2 0 0 0 0 0 0 0 0 2 REV3L 2 0 0 0 0 0 0 0 0 2 TCERG1L 2 0 0 0 0 0 0 0 0 2 FAM5C 1 2 0 1 0 0 0 0 1 5 x… (More)

- F Brezzi, L P Franca, T J R Hughes, A Russo
- 1996

We present an overview of stabilized nite element methods and of the standard Galerkin method enriched with residual-free bubble functions. The inadequacy of the standard Galerkin method using piecewise polyno-mials is discussed for diierent applications; the treatment using stabilized methods in their diierent versions is reviewed; and the connection to… (More)

- Bashir Ahmad, Ahmed Alsaedi, Franco Brezzi, L. Donatella Marini, Alessandro Russo
- Computers & Mathematics with Applications
- 2013

In the original Virtual Element space with degree of accuracy k, projector operators in theH-seminorm onto polynomials of degree ≤ k can be easily computed. On the other hand, projections in the L norm are available only on polynomials of degree ≤ k − 2 (directly from the degrees of freedom). Here we present a variant of VEM that allows the exact… (More)

A nodally exact scheme is derived for a model equation in 1D involving zeroth and second order terms. The method is derived using residual-free bubbles in conjunction with the Galerkin approximation. It is shown that this approach leads to the mass lumping scheme for su ciently small mesh sizes. 1. The residual-free bubbles approach. The usage of the… (More)

- Alessandro Russo, Cristina Tablino Possio
- SIAM J. Matrix Analysis Applications
- 2009

- Andrea Cangiani, Gianmarco Manzini, Alessandro Russo
- SIAM J. Numerical Analysis
- 2009

We propose a family of mimetic discretization schemes for elliptic problems including convection and reaction terms. Our approach is an extension of the mimetic methodology for purely diffusive problems on unstructured polygonal and polyhedral meshes. The a priori error analysis relies on the connection between the mimetic formulation and the lowest order… (More)

We show that three well-known \variational crimes" in nite elements { upwinding, mass lumping and selective reduced integration { may be derived from the Galerkin method employing the standard polynomial-based nite element spaces enriched with residual-free bubbles.

- L P Franca, A Russo
- 1996

Linear-constant velocity-pressure elements are enriched with residual-free macro bubbles. Static condensation prompts a stabilized method for this element, where mesh-dependent jumps of the normal stress are added across internal edges of the underlying macroelements. This procedure renders the SIMPLEST element stable.

- Simone Bianco, Francesca Gasparini, Alessandro Russo, Raimondo Schettini
- IEEE Trans. Consumer Electronics
- 2007

In this paper we present an RGB to XYZ transformation method based on a pattern search optimization algorithm. Whatever strategy is adopted to initialize the color transformation, our method is able to optimize it in order to minimize the color error on a given training set, also taking into account a color mapping constraint. We report experimental results… (More)