1,074 research outputs found
Demetrio e l'Oste Burlone. Epistolario Primo Conti-Corrado Pavolini
No full textIl volume raccoglie un ampio corpus delle lettere, fino a questo momento inedite, tra Primo Conti e Corrado Pavolini, intellettuali, letterati e artisti che hanno animato la cultura italiana novecentesca. L'opera è corredata da una corposa introduzione, da un ampio apparato di note e di schede bio-bibliografiche e da alcune immagini
A technology ecosystem for chronic pain: promises, challenges, and future research
No full textBeing a common, mostly unpredictable, highly personalized manifestation, chronic pain is thought to be one of the most promising conditions in which the use of digital health technologies may boost patient’s engagement and coping. In fact, pain treatment, besides pharmacotherapy, involves non-pharmacotherapeutic management, which may include physical and psychological interventions. Self-monitoring, real-time assessment, timely feedback, treatment options information, social and community support, and connection with a multidisciplinary care team are among the features that can mostly help chronic pain sufferers to enhance disease and comorbidities management and, ultimately, improve their quality of lif
AN UPDATE ON SECESSION AS THE "ULTIMATE RIGHT": FOR A LIMINAL LEGALITY
No full textLIMINAL LEGALITY AS A NEW FORM OF LEGALITY FOR SECESSION IN INTERNATIONAL LAW. THE AUTHOR PROPOSE A NEW LEGAL THEORY OF SECESSION
Exponential splines and pseudo-splines: generation versus reproduction of exponential polynomials
No full textSubdivision schemes are iterative methods for the design of smooth curves and surfaces.
Any linear subdivision scheme can be identified by a sequence of Laurent polynomials, also called subdivision symbols,
which describe the linear rules determining successive refinements of coarse initial meshes.
The goal of this work is to derive explicit expressions of the subdivision symbols of
exponential pseudo-splines reproducing exponential polynomials and to study their symmetry properties.
The -level subdivision symbol of an exponential pseudo-spline is defined by a suitable
polynomial ``correction'' of the -level subdivision symbol of an exponential B-spline.
The polynomial correction is such that the resulting subdivision symbol is the one of minimal
support that fulfills the conditions for reproduction of the space of exponential polynomials
generated by the exponential B-spline, or a subset of it.
Reproduction of exponential polynomials is indeed an important property in many applicative areas ranging from computer--aided geometric design to signal and image processing
An algorithm for locally adaptive bivariate penalized splines
No full textThis paper introduces a penalized spline model for bivariate smoothing that locally adjusts to gridded data set affected by noise varying across different areas of the domain. As for all penalized spline methods, the approach requires the definition of suitable penalty terms and the selection of the regularization parameters. In our model, the regularization parameters are chosen anisotropically using a data-driven approach that adapts the roughness amount to the noise level. The proposed approach alternates the construction of univariate penalized spline based on B-spline basis functions along both coordinates, and uses a tensor product structure to capture interactions between the two dimensions. Numerical experiments confirm the efficacy of the approach, the anisotropy of the model, and the ability to locally adapt the amount of regression to different noise levels in different areas. The model is compared with two state-of-the-art smoothers, for which we also provide an original reformulation highlighting their construction as penalized splines
Special Issue: Subdivision, Geometric and Algebraic Methods, Isogeometric Analysis and Refinability
No full textThe content of this special issue focuses on recent advances in Subdivision, Geometric and Algebraic Methods, Isogeometric
Analysis and Refinability. It aims at emphasizing the newest developments in these emerging and challenging fields as well
as their mutual interactions. All the considered topics are important and of increasing interest for the scientific community of applied
mathematicians. Subdivision schemes provide a simple and intuitive approach for modelling geometric objects of arbitrary
topology and find applications in several domains ranging from Computer Aided Geometric Design (CAGD), Computer-Aided
Design (CAD) and digital animation to signal processing. Refinable bases and their use in the related multiresolution representations
of data represent powerful tools in image and surface processing as well as in geometric modelling. Similarly, the design
of motion planning strategies plays a fundamental role in modern computer numerical control systems for machining, layered
manufacturing, composites fabrication, inspection, and related processes. Finally, Isogeometric Analysis (IgA), is a relatively new
analysis framework that aims at reducing the gap between the worlds of Finite Element Analysis (FEA) and CAD and has become a focus of research within both fields becoming a mainstream analysis methodology and a new paradigm for geometric design. The majority of the articles in this special issue grow out from talks and contributions given at the first international conference on Subdivision, Geometric and Algebraic Methods, Isogeometric Analysis and Refinability in Tuscany, SMART 2014, held
in Pontignano, Siena, Italy. All papers have undergone the standard anonymous refereeing process of AMC journal. The guest editors would like to thank the authors for their valuable contributions to the special issue and all the reviewers who provided their constructive criticism, through reviews, and their valuable time. We are also grateful to the journal editorial staff for their help in the preparation of this special issue
Convergence analysis of corner cutting algorithms refining nets of functions
No full textIn this paper we propose a corner cutting algorithm for nets of functions and prove its convergence using some approximation ideas first applied to the case of corner cutting algorithms refining points with weights proposed by Gregory and Qu. In the net case convergence is proved for the above mentioned weights satisfying an additional condition. The condition requires a bound on the supremum of the relative sizes of the cuts
The influence of copper ions on antioxidant activity: Preliminary study
No full textThe influence of copper on the antioxidant activity of endogenous and exogenous radical scavenging systems has been evaluated by cyclic voltammetry. The results indicate that though this metal may increase antioxidant activity, this is sometimes combined with pro-oxidant activity, especially in the case of exogenous antioxidants, so that the final effect may not be as positive as expected, with the risk of toxic secondary effects. Copyright © 2007 Inderscience Enterprises Ltd
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