Official Sites, View agent, publicist, legal and company contact details on IMDbPro. It looks like we don't have any Biography for Marco Prato is this you? |  We propose a method for the construction of electron flux maps at different el... Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) is a nine-collimators satellite detecting X–rays and γ–rays emitted by the Sun during flares. Genitori - ICS Marco Polo di Prato. claim profile. The key features of our approach are the definition of a suitable descent direction, based on the proximal operator of the convex part, and the possibility of adopting a variable metric in the computation of the proximal operator. Join Facebook to connect with Marco A Prato M II and others you may know. Examples of metrics which are included in our framework are the Euclidean distance, the scaled Euclidean distance, where the scaling matrix is given by strategies such as the Majorization-Minimization or the Split Gradient techniques, and Bregman distances. Join ResearchGate to find the people and research you need to help your work. I due, sotto effetto di alcol e droghe, avrebbero attirato il ragazzo nell'appartamento dove poi sarebbe iniziato il massacro. In this paper we address the problem of reconstructing the phase from color images acquired with differential-interference-contrast (DIC) microscopy. Il dirigente scolastico prof. Rinaldi ha disposto il proseguimento della didattica digitale integrata al 100% dal 4 dicembre 2020 al 23 dicembre 2020. The RHESSI spacecraft images hard X-ray emission from solar flares with an angular resolution down to ~2'' and an energy resolution of 1 keV. flare-accelerated electrons. Search the world's information, including webpages, images, videos and more. Our approach is validated in the case of different modifications of the mathematical model of the problem based on physical motivations, and for data sets obtained with synthetic experiments. Marco Narcisi on Facebookissa. One example is given by decoding brain states from functional magnetic resonance imaging (fMRI) data. Our starting point is the Iterative Soft Thresholding Algorithm (ISTA), a well-known algorithm to solve sparsity-promoting minimization problems. Emilie Chouzenoux 12 publications . The method minimizes the sum of a nonlinear least-squares discrepancy measure and a smooth approximation of the total variation. 408 Followers, 263 Following, 726 Posts - See Instagram photos and videos from Marco Prato - il Fummelier® (@ilfummelier) Moreover, an accurate modeling of the PSF is in general not available. In several supervised learning applications, it happens that reconstruction methods have to be applied repeatedly before being able to achieve the final solution. For these reasons, among all possible iterative schemes, first-order algorithms represent a powerful tool in solving such optimization problems since they admit a relatively simple implem... An interesting problem arising in astronomical imaging is the reconstruction of an image with high dynamic range, for example a set of bright point sources superimposed to smooth structures. Michele Placido was born on May 19, 1946 in Ascoli Satriano, Puglia, Italy. The key features of these methods are the Armijo linesearch along a suitable descent direction and the non Euclidean metric employed to compute the gradient projection. He is an actor and writer, known for Romanzo criminale (2005), Un eroe borghese (1995) and La piovra (1984). projection (SGP) methods, which provide efficient and accurate Marco Prato Professore associato presso Università degli Studi di Modena e Reggio Emilia Modena, Italia 290 collegamenti Il testamento di Marco Prato è stato scritto prima della lettera trovata in cella accanto al suo corpo esamine. Marco Prato suicida in carcere, lascia in cella una lettera in cui accusa: "Su di me bugie" Nella lettera in cui spiega i motivi del suo gesto, sottolinea anche "l'attenzione mediatica subìta" This was an... X-radiation from energetic electrons is the prime diagnostic of Group 1. Marco Prato The method avoids the “traditional” noise-sensitive step of stacking independent images made in different count-based energy intervals. in the optimization field to provide the fastest methods for the 0 followers Featured Co-authors. reconstructions of astronomical images. Liity Facebookiin ja pidä yhteyttä käyttäjän Marco Narcisi ja muiden tuttujesi kanssa. In this paper we propose a solution based on t... Variational methods are widely applied to ill-posed inverse problems for they have the ability to embed prior knowledge about the solution. Guarda il profilo completo su LinkedIn e scopri i collegamenti di Marco e le offerte di lavoro presso aziende simili. Manuel Foffo e Marco Prato sono indagati per la morte del giovane. He received the, Department of Physics, Informatics and Mathematics, Friedrich-Alexander-University of Erlangen-Nürnberg, Engineering, Applied and Computational Mathematics, Convergence of Inexact Forward--Backward Algorithms Using The Forward--Backward Envelope, New convergence results for the inexact variable metric forward–backward method, A Hybrid Interior Point - Deep Learning Approach for Poisson Image Deblurring, Deep neural networks for inverse problems with pseudodifferential operators: an application to limited-angle tomography, Efficient Block Coordinate Methods for Blind Cauchy Denoising, Recent Advances in Variable Metric First-Order Methods, Multiple Image Deblurring with High Dynamic-Range Poisson Data, Deep Unfolding of a Proximal Interior Point Method for Image Restoration, Learned Image Deblurring by Unfolding a Proximal Interior Point Algorithm, A Bregman inexact linesearch–based forward–backward algorithm for nonsmooth nonconvex optimization, A block coordinate variable metric linesearch based proximal gradient method, A comparison of edge-preserving approaches for differential interference contrast microscopy, On the convergence of a linesearch based proximal-gradient method for nonconvex optimization, TV-regularized phase reconstruction in differential-interference-contrast (DIC) microscopy, On the constrained minimization of smooth Kurdyka—Łojasiewicz functions with the scaled gradient projection method, The software package AIRY 7.0: new efficient deconvolution methods for post-adaptive optics data, On the convergence of variable metric line-search based proximal-gradient method under the Kurdyka-Lojasiewicz inequality, Phase estimation in differential-interference-contrast (DIC) microscopy, New convergence results for the scaled gradient projection method, Application of cyclic block generalized gradient projection methods to poisson blind deconvolution, Variable Metric Inexact Line-Search-Based Methods for Nonsmooth Optimization, A convergent least-squares regularized blind deconvolution approach, A blind deconvolution method for ground based telescopes and Fizeau interferometers, A cyclic block coordinate descent method with generalized gradient projections, An alternating minimization method for blind deconvolution in astronomy, An alternating minimization method for blind deconvolution from Poisson data, Strehl-constrained reconstruction of post-adaptive optics data and the Software Package AIRY, v. 6.1, A New Steplength Selection for Scaled Gradient Methods with Application to Image Deblurring, A new general framework for gradient projection methods, A Scaled Gradient Projection Method for Bayesian Learning in Dynamical Systems, Accelerated gradient methods for the x-ray imaging of solar flares, Point Spread Function extraction in crowded fields using blind deconvolution, Deconvolution-based super resolution for post-AO data, On the filtering effect of iterative regularization algorithms for discrete inverse problems, Filter factor analysis of scaled gradient methods for linear least squares, An image reconstruction method from Fourier data with uncertainties on the spatial frequencies, A New Semiblind Deconvolution Approach for Fourier-Based Image Restoration: An Application in Astronomy, A deconvolution algorithm for imaging problems from Fourier data, A convergent blind deconvolution method for post-adaptive-optics astronomical imaging, A practical use of regularization for supervised learning with kernel methods, Scaled Gradient Projection Methods for Astronomical Imaging, Efficient deconvolution methods for astronomical imaging: Algorithms and IDL-GPU codes, Composition of fine and coarse particles in a coastal site of the central Mediterranean: Carbonaceous species contributions, Accuracy of Funduscopy to Identify True Edema versus Pseudoedema of the Optic Disc, Deducing Electron Properties From Hard X-Ray Observations, A regularization algorithm for decoding perceptual temporal profiles from fMRI data, A Novel Gradient Projection Approach for Fourier-Based Image Restoration, Nonnegative image reconstruction from sparse Fourier data: A new deconvolution algorithm, The Location of Centroids in Photon and Electron Maps of Solar Flares, Hard X-ray Imaging of Solar Flares Using Interpolated Visibilities, Regularization Methods for the Solution of Inverse Problems in Solar X-ray and Imaging Spectroscopy, A Regularized Visibility-Based Approach to Astronomical Imaging Spectroscopy, From BOLD-FMRI signals to the prediction of subjective pain perception through a regularization algorithm, Anisotropic Bremsstrahlung Emission and the Form of Regularized Electron Flux Spectra in Solar Flares, Inverse problems in machine learning: An application to brain activity interpretation, A visibility-based approach using regularization for imaging-spectroscopy in solar X-ray astronomy, Determining the Spatial Variation of Accelerated Electron Spectra in Solar Flares, Imaging spectroscopy of hard x-ray sources in solar flares using regularized analysis of source visibilities, Regularized solution of the solar Bremsstrahlung inverse problem: model dependence and implementation issues, Imaging spectroscopy from visibilities in the RHESSI era, Electron flux maps of solar flares: a regularization approach to RHESSI imaging spectroscopy, Electron Flux Spectral Imaging of Solar Flares through Regularized Analysis of Hard X-Ray Source Visibilities, Electron-Electron Bremsstrahlung Emission and the Inference of Electron Flux Spectra in Solar Flares, Determination of Electron Flux Spectrum Images in Solar Flares using Regularized Analysis of Hard X-Ray Source Visibilities, Regularized Reconstruction of the Differential Emission Measure from Solar Flare Hard X-Ray Spectra, Regularized solution of the solar Bremsstrahlung inverse problem: Model dependence and implementation issues, Construction of Electron Flux Images in Solar Flares using Interpolated Visibilities, Part A Astrophysics, Cosmology and Earth Physics 1, Variable metric line-search based methods for nonconvex optimization, Department of Physical and Chemical Sciences, Department of Biomedical, Metabolical and Neurosciences, Dipartimento di Informatica, Bioingegneria, Robotica e Ingegneria dei Sistemi (DIBRIS), Department of Mathematics and Computer Science, School of Systems Engineering and Informatics, School of Biotechnology and Biomolecular Sciences (BABS). The Reuven Ramaty High-Energy Solar Spectroscopic Imager (RHESSI) is a nine-collimators satellite detecting X---rays and gamma--rays emitted by the Sun during flares. Alle esequie anche il sindaco di Prato, città natale del campione azzurro Si terrà nel duomo di … Con Il Messaggero Veneto puoi cercare la persona scomparsa e ricordarla con un messaggio. In several biomedical fields, researchers are faced with regression problems that can be stated as Statistical Learning problems. is to avoid noise amplification due to the presence of small singular Be the first to contribute! Such a framework relies on an implementable inexactness condition for the computation of the proximal operator and on a linesearch procedure, which is possibly p... Forward–backward methods are valid tools to solve a variety of optimization problems where the objective function is the sum of a smooth, possibly nonconvex term plus a convex, possibly nonsmooth function. "La mamma di Luca Varani, appresa stamattina la notizia del suicidio di Marco Prato, ha pianto. Alle esequie anche il sindaco di Prato, città natale del campione azzurro Si terrà nel duomo di Vicenza il funerale di Pablito. Google has many special features to help you find exactly what you're looking for. introducing suitable generalized projection opera... A crucial task in system identification problems is the selection of the most Funduscopy remains the first-line investigation. A huge number of studies has been carried out Biography submission guide. perturbed by Poisson noise. Marco Di Prato (184554164)'s profile on Myspace, the place where people come to connect, discover, and share. In these situations, the availability of learning algorithms able to provide effective predictors in a very short time may lead to remarkable improvements in the overall computational req... We describe recently proposed algorithms, denoted scaled gradient Publicity Listings The corresponding iteration is built on two main ingredients: the computation of the gradient of the smooth part and the evaluation of the proxi... We propose a novel convolutional neural network (CNN), called $\Psi$DONet, designed for learning pseudodifferential operators ($\Psi$DOs) in the context of linear inverse problems. When the collected data are affected by Poisson noise, this problem is typically addressed by the minimization of the Kullback-Leibler divergence, in which the unknowns... We first briefly present the last version of the Software Package AIRY, version 6.1, a CAOS-based tool which includes various deconvolution methods, accelerations, regularizations, super-resolution, boundary effects reduction, point-spread function extraction/extrapolation, stopping rules, and constraints in the case of iterative blind deconvolutio... Gradient methods are frequently used in large scale image deblurring problems the sky and measured through ‘ad hoc’ observational techniques, contains very indirect information on the physical process Manuel Foffo e Marco Prato sono indagati per la morte del giovane. We consider a regularized version of the corresponding data fidelity function, by adding the total variation regularizer on the image and a Tik... Minimization problems often occur in modeling phenomena dealing with real-life applications that nowadays handle large-scale data and require real-time solutions. As the spacecraft rotates, imaging information is encoded as rapid time-variations of the detected flux. We introduce a novel method for imaging spectroscopy analysi... We address an important inverse problem in solar plasma physics by means of an ‘ad hoc’ implementation of the Tikhonov regularization method. Blind deconvolution is a particularly challenging inverse problem since information on both the desired target and the acquisition system have to be inferred from the measured data. Written in IDL and freely downloadable, AIRY is a... We consider a variable metric line-search based proximal gradient method for the minimization of the sum of a smooth, possibly nonconvex function plus a convex, possibly nonsmooth term. The method requires the application of re... We introduce a new method for imaging spectroscopy analysis of hard X-ray emission during solar flares. yet. Marco Prato ha lasciato chiare disposizioni ai genitori su come vorrebbe il proprio funerale. The aim of this paper is to consider a modification of a block coordinate gradient projection method with Armijo linesearch along the descent direction in which the projection on the feasible set is performed according to a variable non Euclidean metric. We restrict the presentation to Get support and explore our extensive documentation for our WordPress themes, Joomla templates, YOOtheme Pro page builder, Widgetkit and ZOO. appropriate model class, and is classically addressed resorting to 156; 1; Il messaggio di Ledo Prato: "Unitevi alle nostre preghiere" Luca Romano. Volunteering. As the spacecraft rotates, imaging information is encoded as rapid time-variations of the detected flux. We study the inverse problem in both semidiscrete and fully discrete formulations, and our analysis leads to an optimization problem involving the minimization of the data discrepancy under nonnegativity constraints... We explore the use of centroid coordinates as a means to identify the "locations" of electron-proton bremsstrahlung hard X-ray sources in solar flares. problem involves the introduction of a filter factors array, whose aim I genitori di Luca Varani rompono il silenzio a quasi due settimane dall’omicidio del loro figlio, ucciso da Manuel Foffo e Marco Prato dopo due giorni di torture e sevizie, alcool e droga. Related works to this project are the following: reconstruction of the solution, involving choices of adaptive parameters Viene ritrovato infatti in una camera d’albergo dopo aver assunto alcool e sonniferi. Manuel Foffo e Marco Prato, news 13 marzo 2016: i due assassini del 23enne Luca Varani continuano ad accusarsi reciprocamente, ecco le ultime sconvolgenti rivelazioni. We describe a novel method for the construction of electron flux maps at different electron energies from sets of count visibilities measured by RHESSI. nonuniform sampling of its Fourier transform is considered, in the In a typical machine learning problem one has to build a model from a finite training set which is able to generalize the properties characterizing the examples of the training set to new examples. Differences between the coordinates of the electron and photon centroids are derived and explained. Michele Placido, Actor: Romanzo criminale. Marco Prato was born in Varazze, Italy, in 1980. Unlike previous analysis based on the Kramers and Bethe-Heitle... We address an important inverse problem in solar plasma physics by means of an 'ad hoc' imple-mentation of the Tikhonov regularization method. Contribution: Image reconstructions provided by uv_smooth in both the count and electron spaces are processed in order to obtain quantitative information on the flaring sources. He received the M.Sc. Our approach is validated in the case of different modifications of the mathematical model of the problem based on physical motivations, and for data sets obtained with synthetic experiments. Other Works I genitori di Luca, Silvana e Giuseppe, sono distrutti dal dolore e chiedono giustizia per il loro unico figlio, ucciso in un modo così brutale. ‪Dipartimento di Scienze Fisiche, Informatiche e Matematiche, Università di Modena e Reggio Emilia‬ - ‪Cited by 1,013‬ - ‪Inverse problems‬ - ‪image processing‬ - ‪machine learning‬ The new method allows the construction of images of both count and electron flux spectra that are smoothed with respect to energy, and so more suitable for further analysis. The Richardson-Lucy method is the most popular deconvolution method in astronomy because it preserves the number of counts and the non-negativity of the original object. the point spread function (PSF) is only poorly known or completely unknown. Read full articles, watch videos, browse thousands of titles and more on the "Italy" topic with Google News. Due to our privacy policy, only current members can send messages to people on ResearchGate. This paper deals with the problem of image blind deconvolution in presence of Cauchy noise, a type of non-Gaussian, impulsive degradation which frequently appears in engineering and biomedical applications. He has been married to … As the spacecraft rotates, imaging information is encoded as rapid time-variations of the detected flux. Associate Professor in Numerical Analysis Department of Physics, Computer Science and Mathematics University of Modena and Reggio Emilia Via Campi 213/b I-41125 Modena - Italy. This paper deals with image restoration problems where the data are nonuniform samples of the Fourier transform of the unknown object. Samuli Siltanen 6 publications . Università degli Studi di Modena e Reggio Emilia, Marco Prato was born in Varazze, Italy, in 1980. function. The main difficulties in this investigations rely on the poor quality of th... We develop a formal procedure for the analysis of imaging spectroscopy data, i.e., remote sensing observations of the structure of a radiation source as a function of an observed parameter (e.g., radiation wavelength, frequency, or energy) and two-dimensional location in the observation plane of the instrument used. Many real-world applications are addressed through a linear Only verified researchers can join ResearchGate and send messages to other members. and sca... A typical way to compute a meaningful solution of a linear least squares In the case of ground-based telescopes equipped with adaptive optics systems, ROMA – Marianna Prato, la sorella di Marco, si è rinchiusa in casa: non sapeva, non poteva sospettare (come il resto della famiglia) che suo fratello avesse una doppia vita. Finally, an app... We report on a novel method for recovering both hard X-ray images, and also their corresponding "electron flux images" from RHESSI solar flare data. The procedure involves regularized inversion of the count visibility spe... We address the problem of how to test whether an observed solar hard X-ray bremsstrahlung spectrum ( I (∊)) is consistent with a purely thermal (locally Maxwellian) distribution of source electrons, and, if so, how to reconstruct the corresponding differential emission measure (ξ( T )). Abito a Prato con i miei genitori a due passi da questo appartamento in Colonica, la vicinanza ci aiuta ad essere più efficienti e pronti alle richieste di aiuto che possono provenire dagli ospiti! In this paper, we present a forward-backward linesearch-based algorithm suited for the minimization of the sum of a smooth (possibly nonconvex) function and a convex (possibly nonsmooth) term. In questo momento si sente come può sentirsi un ragazzo che ha appena tentato il suicidio“. differentiable, function. Such an omission is not justified at electron (and photon) energies above $\sim 300$ keV, and inclusion of the additional electron-electron bremsstrahlung in general makes the electron spectrum req... We introduce a new method for imaging spectroscopy analysis of hard X-ray emission during solar flares. least-squares problem formulation, whose solution is calculated by means In general, imaging spectroscopy... Functional magnetic resonance imaging, in particular the BOLD-fMRI technique, plays a dominant role in hu-man brain mapping studies, mostly because of its non-invasiveness and relatively high spatio-temporal resolution. The main feature of SGP is the presence of a variable scaling matrix multiplying the gradient, which may change at each iteration. The scaled gradient projection (SGP) method is a first-order optimization method applicable to the constrained minimization of smooth functions and exploiting a scaling matrix multiplying the gradient and a variable steplength parameter to improve the convergence of the scheme. characterize the stationary points of a constrained minimum problem by 157. In this paper we present new optimization strategies for the reconstruction of x-ray images of solar flares by means of the data collected by the Reuven Ramaty high energy solar spectroscopic imager. University students and faculty, institute members, and independent researchers, Technology or product developers, R&D specialists, and government or NGO employees in scientific roles, Health care professionals, including clinical researchers, Journalists, citizen scientists, or anyone interested in reading and discovering research. The cross section for bremsstrahlung photon emission in solar flares is, in general, a function of the angle θ between the incoming electron and the outgoing photon directions. Visualizza il profilo di Marco Prati su LinkedIn, la più grande comunità professionale al mondo. Member of the HIPERT laboratory. The aim of this study was to assess the accuracy, sensitivity, and specificity of funduscopy in differentiating ODE from PODE. Such inverse problem has a natural semidiscrete formulation, that is analyzed together with its fully discrete counterpart. High resolution Adaptive Optics images are characterized by a highly structured PSF that cannot be represented by any simple analytical model. In particular, we consider the nonlinear and nonconvex optimization problem obtained by regularizing a least-squares-like discrepancy term with an edge-preserving functional, given by either the hypersurface po... We consider a variable metric linesearch based proximal gradient method for the minimization of the sum of a smooth, possibly nonconvex function plus a convex, possibly nonsmooth term. Marco Prato ha lasciato chiare disposizioni ai genitori su come vorrebbe il proprio funerale. cross-validation or using asymptotic arguments. and Ph.D. degrees in Mathematics at the University of Genova, Italy, in 2003 and 2006. More specifically, uv_smooth and regularized … Google has many special features to help you find exactly what you're looking for. Luca Varani muore il 6 marzo 2016 in un appartamento nel quartiere Collatino, dopo ore di torture e sevizie. Homepage IISS Keynes. Although both electron-ion and electron-electron bremsstrahlung contribute to the hard X-ray emission from solar flares, the latter is normally ignored. However, the level of performance of these methods significantly depends on a set of parameters, which can be estimated through computationally expensive and time-consuming methods. In this paper we propose a blind deconvolution method which applies to data measured data. since they avoid the onerous computation of the Hessian matrix of the objective This paper deals with a general framework for inexact forward--backward algorithms aimed at minimizing the sum of an analytic function and a lower semicontinuous, subanalytic, convex term. Blind deconvolution is the problem of image deblurring when both the original object and the blur are unknown. «La morte di Marco Prato è una tragedia nella tragedia del povero Luca Varani e dei suoi genitori.