1,721,024 research outputs found
A Γ-convergence result for doubling metric measures and associated perimeters
No full textIn this paper we study the notion of perimeter associated with doubling metric measures or strongly A∞ weights. We prove that the metric perimeter in the sense of L. Ambrosio and M. Miranda jr. coincides with the metric Minkowski content and can be obtained also as a Γ-limit of Modica-Mortola type degenerate integral functionals
A research methodology for systematic literature reviews: application to zone picking and preliminary results
No full textThe aim of this paper is to provide a methodology for conducting a systematic literature review (SLR) relating to research field of zone picking and to propose some preliminary results on this topic. The proposed methodology (called DEBABA – see below) has been applied in this paper to the topic of zone picking but can actually be replicated and used by anyone who has an interest to conduct SLRs. The steps followed for the review are as follows: Data extraction (DE) after having identified the topic of scientific relevance (in this case «zone picking»), it’s necessary to perform the bibliographic research on the identified topic. Bibliographic analysis (BA) statistical (descriptive) analysis on the articles collected. Bibliometric analysis (BA) quantitative techniques for analysing the data extracted from databases. This method of literature review lays the foundations for carrying out a correct review, by studying the evolution of a topic over time and identifying the most prominent topics and authors, in order to provide a complete overview and classification of the existing research on a particular topic, summarize and synthesize the available knowledge on this topic and identify the limitations of the literature to propose future lines of research. To show its usage, some preminary results of the application of the proposed approach to the topic of zone picking are presented and discussed
Anestesia per la chirurgia ortopedica
No full textTraduzione del Cap. 40 del testo originale "Barash PG, Cullen FC, Stoelting RK: Handbook of Clinical Anesthesia, Lippincott Williams & Wilkins, Philadelphia
Atlante di elettrocardiografia
No full textTraduzione dell’Appendice B del testo originale "Barash PG, Cullen FC, Stoelting RK: Handbook of Clinical Anesthesia, Lippincott Williams & Wilkins, Philadelphia
Elettrocardiografia
No full textTraduzione dell’Appendice del testo originale "Barash PG, Cullen FC, Stoelting RK: Clinical Anesthesia, 5th Ed, Lippincott Williams & Wilkins, Philadelphia, 2006
Gaffney–Friedrichs inequality for differential forms on Heisenberg groups
Full text linkIn this paper, we will prove several generalized versions, dependent on different boundary conditions, of the classical Gaffney–Friedrichs inequality for differential forms on Heisenberg groups. In the first part of the paper, we will consider horizontal differential forms and the horizontal differential. In the second part, we shall prove the counterpart of these results in the context of Rumin’s complex
Poincaré and sobolev inequalities for differential forms in heisenberg groups and contact manifolds
Full text linkIn this paper, we prove contact Poincaré and Sobolev inequalities in Heisenberg groups, where the word 'contact' is meant to stress that de Rham's exterior differential is replaced by the exterior differential of the so-called Rumin complex, which recovers the scale invariance under the group dilations associated with the stratification of the Lie algebra of. In addition, we construct smoothing operators for differential forms on sub-Riemannian contact manifolds with bounded geometry, which act trivially on cohomology. For instance, this allows us to replace a closed form, up to adding a controlled exact form, with a much more regular differential form
L1-Poincaré inequalities for differential forms on Euclidean spaces and Heisenberg groups
Full text linkIn this paper, we prove interior Poincaré and Sobolev inequalities in Euclidean spaces and in Heisenberg groups, in the limiting case where the exterior (resp. Rumin) differential of a differential form is measured in L1 norm. Unlike for Lp, p>1, the estimates are doomed to fail in top degree. The singular integral estimates are replaced with inequalities which go back to Bourgain-Brezis in Euclidean spaces, and to Chanillo-Van Schaftingen in Heisenberg groups
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