Search results for "Wien"
showing 10 items of 111 documents
Multipole WIEN-filter for a high-resolution X-PEEM
1997
Abstract The development and construction of an X-PEEM with integral multipole WIEN-filter for spectromicroscopy with high lateral resolution is presented. All relevant electron-optical properties of the filter have been examined by field and trajectory calculations. Electric and magnetic multipole components (dipole, quadrupole and hexapole) can be chosen independently from each other, thus allowing electron-optical corrections. Theoretical values for the lateral resolution are in the range of 10 nm, experimental values of ≤25 nm have been achieved using the column without filter. The instrument is designed in particular for the use of Sychrotron radiation as well as new, high-brilliance l…
Tra decorazione e grafica. Il corpus di Ugo Zovetti nel Gabinetto dei Disegni e delle Stampe della Fondazione Giorgio Cini
2020
Il contributo è dedicato a Ugo Zovetti (Curzola, 1879 - Milano, 1974), figura poliedrica di grande interesse che ha attraversato con originalità le arti del XX secolo distinguendosi tra i protagonisti della decorazione del libro come autore di pregevoli carte decorate. Ugo Zovetti fu un esponente della Secessione Viennese che ebbe larga parte nella diffusione del gusto secessionista e della Wiener Werkstätte in Italia, dove si affermò nel campo della decorazione durante gli anni dedicati all’insegnamento nella sede dell’ISIA di Monza. Nella prospettiva di una lettura della sua produzione tra grafica e decorazione, viene per la prima volta preso in esame e pubblicato l’inedito corpus di sue …
Noise Filtering Using Edge-Driven Adaptive Anisotropic Diffusion
2008
This paper presents a method aimed to noise removal in MRI (Magnetic Resonance Imaging). We propose an improvement of Perona and Malik's anisotropic diffusion filter. In our schema, the diffusion equation of the filter has been modified to take into account the edges direction, This allows the filter to blur uniform areas, while it better preserves the edges. Both quantitative and qualitative evaluation is presented and the results are compared with other methods.
Simulation of BSDEs with jumps by Wiener Chaos Expansion
2016
International audience; We present an algorithm to solve BSDEs with jumps based on Wiener Chaos Expansion and Picard's iterations. This paper extends the results given in Briand-Labart (2014) to the case of BSDEs with jumps. We get a forward scheme where the conditional expectations are easily computed thanks to chaos decomposition formulas. Concerning the error, we derive explicit bounds with respect to the number of chaos, the discretization time step and the number of Monte Carlo simulations. We also present numerical experiments. We obtain very encouraging results in terms of speed and accuracy.
Robust Mean Field Games
2015
Recently there has been renewed interest in large-scale games in several research disciplines, with diverse application domains as in the smart grid, cloud computing, financial markets, biochemical reaction networks, transportation science, and molecular biology. Prior works have provided rich mathematical foundations and equilibrium concepts but relatively little in terms of robustness in the presence of uncertainties. In this paper, we study mean field games with uncertainty in both states and payoffs. We consider a population of players with individual states driven by a standard Brownian motion and a disturbance term. The contribution is threefold: First, we establish a mean field syste…
Stochastic Control Problems
2003
The general theory of stochastic processes originated in the fundamental works of A. N. Kolmogorov and A. Ya. Khincin at the beginning of the 1930s. Kolmogorov, 1938 gave a systematic and rigorous construction of the theory of stochastic processes without aftereffects or, as it is customary to say nowadays, Markov processes. In a number of works, Khincin created the principles of the theory of so-called stationary processes.
BROWNIAN DYNAMICS SIMULATIONS WITHOUT GAUSSIAN RANDOM NUMBERS
1991
We point out that in a Brownian dynamics simulation it is justified to use arbitrary distribution functions of random numbers if the moments exhibit the correct limiting behavior prescribed by the Fokker-Planck equation. Our argument is supported by a simple analytical consideration and some numerical examples: We simulate the Wiener process, the Ornstein-Uhlenbeck process and the diffusion in a Φ4 potential, using both Gaussian and uniform random numbers. In these examples, the rate of convergence of the mean first exit time is found to be nearly identical for both types of random numbers.
Il "Viaggio in inverno" di Franz Schubert
2021
Il testo descrive gli ultimi mesi della vita di Franz Schubert, soffermandosi sulla genesi, i contenuti e la struttura musicale e poetica del ciclo "Winterrreise". The text describes the last months of Franz Schubert's life, focusing on the genesis, contents and musical and poetic structure of the cycle "Winterrreise".
Gustav Mahler. Canti del dolore e del commiato
2002
Nel 1901 Gustav Mahler si accosta per la prima volta alle poesie di Friedrich Rueckert, che utilizza in varie composizioni, ma soprattutto nel ciclo dei "Kindertotenlieder" (Canti funebri per i fanciulli). Il saggio si concentra sulla genesi di questo ciclo liederistico, analizzandone alcuni degli aspetti di maggiore rilievo, anche sul piano del rapporto fra la musica e il testo.
Zabezpieczenie na nieruchomości w postępowaniu karnym jako wyraz równorzędności reguł interpretacji w praktyce orzeczniczej sądu karnego
2021
Artykuł poddaje analizie instytucję zabezpieczenia na nieruchomości w postępowaniu karnym w kontekście połączenia w niej działania organów postępowania karnego w dwóch różnych procedurach i w dwóch różnych pozycjach procesowych. Zabezpieczenie następuje w zakresie tytułu wykonawczego w postaci stosownego postanowienia i wynika z postępowania karnego w fazie in personam. Tytuł wykonawczy uzyskany w procedurze karnej stanowi podstawę wpisu hipoteki przymusowej według regulacji procedury cywilnej do księgi wieczystej. Artykuł ma na celu przedstawienie powyższej problematyki w kontekście rozkładu ciężaru argumentacyjnego poszczególnych uczestników dyskursu wskazanej sytuacji procesowej, a także…