102,292 research outputs found
H1-conforming finite element cochain complexes on Cartesian meshes, in "Nonstandard Finite Element Methods"
No full textA Tensor-Product Finite Element Cochain Complex with Arbitrary Continuity
No full textWe develop tensor product finite element cochain complexes of arbitrary
smoothness on Cartesian meshes of arbitrary dimension. The first step is the
construction of a one-dimensional -conforming finite element cochain
complex based on a modified Hermite interpolation operator, which is proved to
commute with the exterior derivative by means of a general commutation lemma.
Adhering to a strict tensor product construction we then derive finite element
complexes in higher dimensions
H1-conforming finite element cochain complexes and commuting quasi-interpolation operators on cartesian meshes
No full textA finite element cochain complex on Cartesian meshes of any dimension based
on the H1-inner product is introduced. It yields H1-conforming finite element
spaces with exterior derivatives in H1. We use a tensor product construction to
obtain L2-stable projectors into these spaces which commute with the exterior
derivative. The finite element complex is generalized to a family of arbitrary
order
The third International Workshop on Aedes albopictus: building scientific alliances in the fight against the globally invasive Asian tiger mosquito
No full textFrom April 10–12 2017 scientists from around the world gathered in Pavia, Italy, to attend a workshop
at the Palazzo Bellisomi-Vistarino hosted by the University of Pavia and dedicated to the latest research
on the Asian tiger mosquito, Aedes albopictus. This biennial meeting was first convened in Pavia in
March 2013 in response to the growing threat of this highly invasive mosquito species that can transmit
several arboviruses of global public health significance including dengue, zika, and chikungunya viruses.
Reflecting the native territories from which this mosquito has spread, the 2015 meeting was hosted by
the Southern Medical University of Guangzhou, China. Returning to Europe in 2017, the meeting’s
scientific organizing committee was made up of Mariangela Bonizzoni and Giuliano Gasperi from the
University of Pavia, who led the workshop, along with Andrea Crisanti from Imperial College, London
(United Kingdom), Xiaoguang Chen from the Southern Medical University of Guangzhou (China), and
Guiyun Yan from the University of California Irvine (United States of America). This report aims to
inform the broader global health community of progress in Ae. albopictus research by providing several
highlights of the results presented and discussed at the meeting, and to encourage participation in
future workshops. The University of Pavia and the Southern Medical University of Guangzhou have
signed a joint agreement to maintain support for running this workshop biennially between the two
universities
Constants and label-equivalence: A decision procedure for reflexive regular splicing languages
No full textAbstractA structural characterization of reflexive splicing languages has been recently given in [P. Bonizzoni, C. De Felice, R. Zizza, The structure of reflexive regular splicing languages via Schützenberger constants, Theoretical Computer Science 334 (2005) 71–98] and [P. Bonizzoni, G. Mauri, Regular splicing languages and subclasses, Theoretical Computer Science 340 (2005) 349–363] showing surprising connections between long standing notions in formal language theory, the syntactic monoid and Schützenberger constant and the splicing operation.In this paper, we provide a procedure to decide whether a regular language is a reflexive splicing language, based on the above-mentioned characterization that is given in terms of a finite set of constants for the language. The procedure relies on the notion of label-equivalence that induces a finite refinement of the syntactic monoid of a regular language L. A finite set of representatives for label-equivalent classes of constant words in L is defined and it is proved that such a finite set provides the splice sites of splicing rules generating language L
Di mescole e di strati : i pigmenti di Mantegna nella pala di San Zeno secondo le analisi integrate EDXRF e vis-RS
No full textMALVA: Genotyping by Mapping-free ALlele Detection of Known VAriants
No full textDenti L, Previtali M, Bernardini G, Schönhuth A, Bonizzoni P. MALVA: Genotyping by Mapping-free ALlele Detection of Known VAriants. iScience. 2019;18:20-27
In situ EDXRF analyses on Renaissance plaquettes and indoor bronzes patina problems and provenance clues
No full textThe preliminary work for the edition of the complete catalogs of Civic collections of Vicenza (Italy) was an occasion to study by energy dispersive x-ray fluorescence (EDXRF) about 30 small bronzes and plaquettes of Italian Renaissance. It was necessary to perform in situ analyses directly in the museum without any possibility of sampling or cleaning the objects. We report the results of quantitative analysis on principal and trace elements; moreover, patina problems and the possible clues for raw materials provenance are faced
Uncertainty quantification in timber-like beams using sparse grids: theory and examples with off-the-shelf software utilization
No full textWhen dealing with timber structures, the characteristic strength and stiffness of the material are made highly variable and uncertain by the unavoidable, yet hardly predictable, presence of knots and other defects. In this work, we apply the sparse grids stochastic collocation method to perform uncertainty quantification for structural engineering in the scenario described above. Sparse grids have been developed by the mathematical community in the last decades, and their theoretical background has been rigorously and extensively studied. The document proposes a brief practice-oriented introduction with minimal theoretical background, provides detailed instructions for the use of the off-the-shelf Sparse Grid Matlab kit (freely available online and straightforward to use) and discusses two preliminary examples inspired from timber engineering problems that highlight how sparse grids exhibit superior performances compared to the plain Monte Carlo method
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