90,654 research outputs found
Determinazione idrodinamica del coefficiente di danneggiamento della permeabilità nell'intorno di un pozzo
No full textMixing of Heavy Flavours
No full textResults are revised on heavy flavour mixing. Limits are given on D0 bar{D0} and on Bs0 bar Bs0 oscillations; measurements of the time dependent Bd bar {Bd} mixing are discussed as well. The implications of these results on the Cabibbo Kobayashi Maskawa flavour mixing matrix is discussed
Thesaurus Resolutionum Sacrae Congregationis Concilii ... Obeuntibus usque ad diem 24 Septembris 1757 ... Card. Furietto Deinceps vero ... D. Simonetto ... In causis sub annum 1759 ... : Tomus Vigesimusoctavus, Duplici loccupletatus
No full textContén ademáis: Thesaurus ... Concilii ... Obeunte ... D. Simonetto ... In causis sun Annum 1760 ... Tomus Vigesimusnonus, Duplici Indici locupletatus -- Romae : Typis et Sumpt. Hieronymi Mainardi, 1759 -- 2 f., 251; Fo
b->s gamma, Vcb and Vub : status and perspectives
No full textThe most recent measurements of these quantities are briefly presented. The future role of the B-factories is also discusse
Effects of radiation damage on the optical properties of glass
No full textWe study the optical properties of glass exposed to ionizing radiation as it occurs in the space environment. Twenty-four glass types have been considered, both space-qualified and not space-qualified. Seventy-two samples (3 for each glass type) have been irradiated to simulate total doses of 10 and 30 krad imposed by a proton beam at KVI-Centre of Advanced Radiation Technology (Groeningen). Combining information concerning stopping power and proton fluence, the time required to reproduce any given total dose in a real environment can be easily obtained. The optical properties, such as spectral transmission and light scattering, have been measured before and after irradiation for each sample. Transmission has been characterized within the wavelength range of 200 to 1100 nm. Indications that systematical issues depend on the dopant or composition are found and described. Our work aims at extending the existing list of space-compliant glasses in terms of radiation damage
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
A real CKM Matrix ?
No full textThe hypothesis of a real Cabibbo-Kobayashi-Maskawa matrix has been considered and found to be disfavoured by present measurements even when neglecting results from CP violation in neutral kaon decay. The Best Linear Unbiased Estimator has been used as a statistical approach to compute the confidence level. This result agrees with most of the previous literature but contradicts statements reported in a recent paper
Distributed Personalized Gradient Tracking with Convex Parametric Models
No full textWe present a distributed optimization algorithm for solving online personalized optimization problems over a network of computing and communicating nodes, each of which linked to a specific user. The local objective functions are assumed to have a composite structure and to consist of a known time-varying (engineering) part and an unknown (user-specific) part. Regarding the unknown part, it is assumed to have a known parametric (e.g., quadratic) structure a priori, whose parameters are to be learned along with the evolution of the algorithm. The algorithm is composed of two intertwined components: (i) a dynamic gradient tracking scheme for finding local solution estimates and (ii) a recursive least squares scheme for estimating the unknown parameters via user's noisy feedback on the local solution estimates. The algorithm is shown to exhibit a bounded regret under suitable assumptions. Finally, a numerical example corroborates the theoretical analysis
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