Search results for "MSC"

CLEAR: Covariant LEAst-Square Refitting with Applications to Image Restoration

2017

International audience; In this paper, we propose a new framework to remove parts of the systematic errors affecting popular restoration algorithms, with a special focus for image processing tasks. Generalizing ideas that emerged for $\ell_1$ regularization, we develop an approach re-fitting the results of standard methods towards the input data. Total variation regularizations and non-local means are special cases of interest. We identify important covariant information that should be preserved by the re-fitting method, and emphasize the importance of preserving the Jacobian (w.r.t. the observed signal) of the original estimator. Then, we provide an approach that has a ``twicing'' flavor a…

I due carceri di Gramsci. La prigione fascista e il labirinto comunista

2012

Fauna Europaea: Hymenoptera - Apocrita (excl. Ichneumonoidea)

2015

Fauna Europaea provides a public web-service with an index of scientific names (including important synonyms) of all living European land and freshwater animals, their geographical distribution at country level (up to the Urals, excluding the Caucasus region), and some additional information. The Fauna Europaea project covers about 230,000 taxonomic names, including 130,000 accepted species and 14,000 accepted subspecies. This represents a huge effort by more than 400 contributing specialists throughout Europe and is a unique (standard) reference suitable for many users in science, government, industry, nature conservation and education. Hymenoptera is one of the four largest orders of inse…

Gramsci and Wittgenstein: an intriguing connection

2010

In the preface to the Philosophische Untersuchungen Wittgenstein writes that he owes to the Italian professor of economics Piero Sraffa "the most important ideas contained in the book". As Sraffa has not writed anything on language, this statement was never given a detailed content. Amartya Sen, who knew the Italian economist during the years spent in Cambridge as a PhD student, in an article (2003) suggests that, during his conversations with Wittgenstein, Sraffa made use of philosophical-linguistic ideas he had learned from Gramsci, while he worked as a student in Turin for the newspaper "Ordine Nuovo" directed by Gramsci himself. Thus, Gramsci, through Sraffa, played a decisive role in t…

Mesenchymal stem cells derived from inflamed gingival tissue for in vivo bone tissue engineering: preliminary results.

2017

Strong chromatic index of products of graphs

2007

Graphs and Algorithms

Removable singularities for div v=f in weighted Lebesgue spaces

2018

International audience; Let $w\in L^1_{loc}(\R^n)$ be apositive weight. Assuming that a doubling condition and an $L^1$ Poincar\'e inequality on balls for the measure $w(x)dx$, as well as a growth condition on $w$, we prove that the compact subsets of $\R^n$ which are removable for the distributional divergence in $L^{\infty}_{1/w}$ are exactly those with vanishing weighted Hausdorff measure. We also give such a characterization for $L^p_{1/w}$, $1<p<+\infty$, in terms of capacity. This generalizes results due to Phuc and Torres, Silhavy and the first author.

Exact simulation of first exit times for one-dimensional diffusion processes

2019

International audience; The simulation of exit times for diffusion processes is a challenging task since it concerns many applications in different fields like mathematical finance, neuroscience, reliability horizontal ellipsis The usual procedure is to use discretization schemes which unfortunately introduce some error in the target distribution. Our aim is to present a new algorithm which simulates exactly the exit time for one-dimensional diffusions. This acceptance-rejection algorithm requires to simulate exactly the exit time of the Brownian motion on one side and the Brownian position at a given time, constrained not to have exit before, on the other side. Crucial tools in this study …

Macrosystem community change in lake phytoplankton and its implications for diversity and function

2023

Aim We use lake phytoplankton community data to quantify the spatio-temporal and scale-dependent impacts of eutrophication, land-use and climate change on species niches and community assembly processes while accounting for species traits and phylogenetic constraints. Location Finland. Time period 1977–2017. Major taxa Phytoplankton. Methods We use hierarchical modelling of species communities (HMSC) to model metacommunity trajectories at 853 lakes over four decades of environmental change, including a hierarchical spatial structure to account for scale-dependent processes. Using a “region of common profile” approach, we evaluate compositional changes of species communities and trait profil…

I poteri di Gramsci: Il dibattito con Bordiga tradotto e (ri-)pensato da Gérard Granel

2017

Questo contributo propone un close reading del saggio Gramsci et le pouvoir, pubblicato nel 1990, nel quale il pensatore e traduttore francese Gérard Granel analizza e commenta il dibattito tra Gramsci e Bordiga sulla questione dei consigli di fabbrica. Granel esamina il legame rispettivo dei due autori italiani al pensiero marxiano e rivela in che misura la “traduzione gramsciana” di concetti chiave come politica, proletariato e comunismo coglie il potenziale rivoluzionario dell’“evento Marx” al di là delle sue strumentalizzazioni ideologiche nei marxismi storici. This article is a close-reading of the essay Gramsci et le pouvoir, published in 1990 by the French thinker and translator Géra…