cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Smart non-intrusive appliance identification using a novel local power histogramming descriptor with an improved k-nearest neighbors classifier
Creators: name: Himeur, Yassine
name: Alsalemi, Abdullah
name: Bensaali, Faycal
name: Amira, Abbes
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Non-intrusive load monitoring (NILM) is a key cost-effective technology for monitoring power consumption and contributing to several challenges encountered when transiting to an efficient, sustainable, and competitive energy efficiency environment. This paper proposes a smart NILM system based on a novel local power histogramming (LPH) descriptor, in which appliance power signals are transformed into 2D space and short histograms are extracted to represent each device. Specifically, short local histograms are drawn to represent individual appliance consumption signatures and robustly extract appliance-level data from the aggregated power signal. Furthermore, an improved k-nearest neighbors (IKNN) algorithm is presented to reduce the learning computation time and improve the classification performance. This results in highly improving the discrimination ability between appliances belonging to distinct categories. A deep evaluation of the proposed LPH-IKNN based solution is investigated under different data sets, in which the proposed scheme leads to promising performance. An accuracy of up to 99.65% and 98.51% has been achieved on GREEND and UK-DALE data sets, respectively. While an accuracy of more than 96% has been attained on both WHITED and PLAID data sets. This proves the validity of using 2D descriptors to accurately identify appliances and create new perspectives for the NILM problem.
description: 20 pages, 5 tables, 7 figures
The Texas Shootout under Uncertainty
Creators: name: Bauch, Gerrit
name: Riedel, Frank
Publisher: name: arXiv
Year: 2022
Subjects: subject: Theoretical Economics (econ.TH)
subject: FOS: Economics and business

description: We investigate the allocation of a co-owned company to a single owner using the Texas Shoot-Out mechanism with private valuations. We identify Knightian Uncertainty about the peer's distribution as a reason for its deterrent effect of a premature dissolving. Modeling uncertainty by a distribution band around a reference distribution $F$, we derive the optimal price announcement for an ambiguity averse divider. The divider hedges against uncertainty for valuations close to the median of $F$, while extracting expected surplus for high and low valuations. The outcome of the mechanism is efficient for valuations around the median. A risk neutral co-owner prefers to be the chooser, even strictly so for any valuation under low levels of uncertainty and for extreme valuations under high levels of uncertainty. If valuations are believed to be close, less uncertainty is required for the mechanism to always be efficient and reduce premature dissolvements.
description: 46 pages, 9 figures
Geometric effects on the electronic structure of curved nanotubes and curved graphene: the case of the helix, catenary, helicoid, and catenoid
Creators: name: de Lima, J. D. M.
name: Gomes, E.
name: Filho, F. F. da Silva
name: Moraes, F.
name: Teixeira, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Since electrons in a ballistic regime perceive a carbon nanotube or a graphene layer structure as a continuous medium, we can use the study of the quantum dynamics of one electron constrained to a curve or surface to obtain a qualitative description of the conduction electrons' behavior. The confinement process of a quantum particle to a curve or surface leads us, in the so-called "confining potential formalism" (CPF), to a geometry-induced potential (GIP) in the effective Schrödinger equation. With these considerations, this work aims to study in detail the consequences of constraining a quantum particle to a helix, catenary, helicoid, or catenoid, exploring the relations between these curves and surfaces using differential geometry. Initially, we use the variational method to estimate the energy of the particle in its ground state, and thus, we obtain better approximations with the use of the confluent Heun function through numerical calculations. Thus, we conclude that a quantum particle constrained to an infinite helix has its angular momentum quantized due to the geometry of the curve, while in the cases of the catenary, helicoid, and catenoid the particle can be found either in a single bound state or in excited states which constitute a continuous energy band. Additionally, we propose measurements of physical observables capable of discriminating the topologies of the studied surfaces, in the context of topological metrology.
Alcuni saggi accademici dimenticati
Creators: name: Marconi, Elena
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

The Florentine Academy of Fine Arts still preserves an important collection of plaster models: some of them are plaster casts of antique reliefs, but there is also a series of models executed during the nineteenth century by the best pupils, who won the Academy competitions. The modern critics have ignored these works of art for a long time, so they have been left neglected in the rooms of the Academy School, without caring of their condition. Only in recent times, the Soprintendenza Speciale per il Polo Museale fiorentino has begun to sort this sculptures, in order to recover them, and this initiative has switched on further researches on this subject. This essay conforms to a moment of renewed interest for XIX Century sculpture and, according to his context, it addresses to retrace the history of the Florentine reliefs and to identify their authors. The purpose or my research is to point out their worth and to develop the knowledge of the Nineteenth Century Academies of Fine Arts and their relevant influence on the art of that age.

description: MDCCC 1800
«Ma passion… ma folie dominante»
Creators: name: Hansson, Ulf
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

Stosch, Winckelmann, and the Allure of the Engraved Gems of the Ancients

description: MDCCC 1800
Woodchopper Homesite II
Creators: name: Girado, Luther
name: Hernandez, Betty
name: Hicks, Lucille
name: Grant, Laura
name: Turner, Julie
name: Everson, Merlene
name: Hammond, Jon
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This recording continues the earlier discussion of stories about the homesite in Woodchopper.
On a fixed-point continuation method for a convex optimization problem
Creators: name: Fest, Jean-Baptiste
name: Heikkilä, Tommi
name: Loris, Ignace
name: Martin, Ségolène
name: Ratti, Luca
name: Rebegoldi, Simone
name: Sarnighausen, Gesa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We consider a variation of the classical proximal-gradient algorithm for the iterative minimization of a cost function consisting of a sum of two terms, one smooth and the other prox-simple, and whose relative weight is determined by a penalty parameter. This so-called fixed-point continuation method allows one to approximate the problem's trade-off curve, i.e. to compute the minimizers of the cost function for a whole range of values of the penalty parameter at once. The algorithm is shown to converge, and a rate of convergence of the cost function is also derived. Furthermore, it is shown that this method is related to iterative algorithms constructed on the basis of the $ε$-subdifferential of the prox-simple term. Some numerical examples are provided.
description: 15 pages, 2 figures. Workshop on Advanced Techniques in Optimization for Machine learning and Imaging
La galleria di dipinti di Alessandro e Giulio Pompei pervenuta al Civico Museo di Verona
Creators: name: Pollini, Diana
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

The essay analyses in depth the collection of two members of the Pompei’s family, Giulio and Alessandro, preserved at the Municipality of Verona under the light of the creation of the museum in the nineteenth century. The discovery of some unpublished inventories gives the chance to learn something new on the creation of the collections. Moreover, it allows to recognize the paintings preserved at the villa of Illasi and at the building conceived by Michele Sanmicheli in Verona.

description: MDCCC 1800
1 Brief an [Hans Georg Nägeli]
Brief an Nägeli ...
Creators: name: Schnyder von Wartensee, Franz Xaver
Publisher: name: [s.n.]
Year: 1809

description: von [Franz] Xaver Schnyder [von Wartensee]
description: Abschrift von Hermann Nägeli; Originalbrief in Ms V 455.2.1
Noise Resistant Phase Imaging with Intensity Correlation
Creators: name: Szuniewicz, Jerzy
name: Kurdzialek, Stanislaw
name: Kundu, Sanjukta
name: Zwolinski, Wojciech
name: Chrapkiewicz, Radosław
name: Lahiri, Mayukh
name: Lapkiewicz, Radek
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Interferometric methods, renowned for their reliability and precision, play a vital role in phase imaging. Interferometry typically requires high coherence and stability between the measured and the reference beam. The presence of rapid phase fluctuations averages out the interferogram, erasing the spatial phase information. This difficulty can be circumvented by shortening the measurement time. However, shortening the measurement time results in smaller photon counting rates precluding its applicability to low-intensity phase imaging. We introduce and experimentally demonstrate a phase imaging technique that is immune to position-independent, time-dependent phase fluctuation. We accomplish this by measuring intensity correlation instead of intensity. Our method enables using long measurement times and is therefore advantageous when the photon flux is very low. We use a Fisher information-based approach to show that the precision of phase reconstruction achieved using our method is in fact the best achievable precision in the scenario when two photons are detected per phase stability time.
«Marmi inutili da vendere o riutilizzare»
Creators: name: Mannoni, Chiara
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

Le aporie di Leo von Klenze per i restauri dell’Acropoli di Atene e la legge di tutela emanata in Grecia nel 1837

description: MDCCC 1800
Nonholonomic constraints in $k$-symplectic Classical Field Theories
Creators: name: de Leon, M.
name: de Diego, D. Martin
name: Salgado, M.
name: Vilariño, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 70F25; 37J60; 70G45

description: A $k$-symplectic framework for classical field theories subject to nonholonomic constraints is presented. If the constrained problem is regular one can construct a projection operator such that the solutions of the constrained problem are obtained by projecting the solutions of the free problem. Symmetries for the nonholonomic system are introduced and we show that for every such symmetry, there exist a nonholonomic momentum equation. The proposed formalism permits to introduce in a simple way many tools of nonholonomic mechanics to nonholonomic field theories.
description: 27 pages
Adjusting deficiency to nature tourism: the case of a contemporary experience of expeditions using all-terrain wheelchairs (ATW)
Creators: name: Perera, Eric
name: Villoing, Gaël
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2019

description: This article looks into All-Terrain Wheelchair (ATW) expeditions carried out in high- mountain environments and the ways of making these possible despite many barriers, both natural and social. Using the life and practices narrative of Jean-François Porret (JFP), the pioneer of ATW in France, this work presents an individual and original experience of nature tourism. Basing ourselves on his personal life story, we will show how JFP adapted his equipment, innovated, but also how he socially adjusted expeditions to disability. JFP was led to reconsidering the practice of mountaineering so as to experience again the old feelings in his ATW, becoming conscious of his “new” body and of the limits associated to his new deficiency. The ATW thus becomes a tool for social interaction in extreme environments where expeditions favour disabled/abled integration in order to overcome the constraints of disability.
description: Eracle. Journal of Sport and Social Sciences, V. 2 (2019): Sport and Tourism in Contemporary Society
title: La recente evoluzione della disciplina antiriciclaggio dello Stato della Città del Vaticano: brevi riflessioni in tema di operazioni frazionate e di c.d. canalizzazione delle operazioni
Creators: name: Marcolin, Giovanna
Publisher: name: Edizioni Ca' Foscari - Digital Publishing
Year: 2015

description: Money Laundering is a big problem of the international economy and only the global common politic can reduce it. States without a money-laundering law contrasting it, or with a soft legislation on this subject, and the possibility to use cash without limits or with high ones, increase and support the money laundering actions. In the world there are some little countries that don't have rules that face this problem, or maybe they have them but they are not suitable. The situation has changed during the last for years as one of these little countries has decided to change its legislation and has developed an anti-money laundering system. This State is Holey See. This paper analyses the anti-money laundering system of the Holey See introduced initially by the Law N. CXXVII/10, later improved with the Law N. CLXVI/12 and finally refined with the Law N. XVIII/13. Especially, it is focused, on two important measures adopted by the Holey See to face the money laundering problem: the theme of the "connected operation" and the limits of the use of the cash in the transactions. To better understand these factors, this paper compares the Holey See measures with the Italian ones issued with the legislation decree N. 231/07.
description: Ricerche giuridiche, 3 | 1 | 2014
Comments on the validity of the non-stationary Generalized Langevin Equation as a coarse-grained evolution equation for microscopic stochastic dynamics
Creators: name: Glatzel, Fabian
name: Schilling, Tanja
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We recently showed that the dynamics of coarse-grained observables in systems out of thermal equilibrium are governed by the non-stationary generalized Langevin equation [J. Chem. Phys. 147, 214110 (2017), J. Chem. Phys. 150, 174118 (2019)]. The derivation we presented in these two articles was based on the assumption that the dynamics of the microscopic degrees of freedom was deterministic. Here we extend the discussion to stochastic microscopic dynamics. The fact that the non-stationary Generalized Langevin Equation also holds for stochastic processes implies that methods designed to estimate the memory kernel, drift term and fluctuating force term of this equation as well as methods designed to propagate it numerically, can be applied to data obtained in molecular dynamics simulations that employ a stochastic thermostat or barostat.
description: 6 pages, 1 figure
Strong Correlations Produce the Curie-Weiss Phase of Na$_{x}$CoO$_2$
Creators: name: Haerter, Jan O.
name: Peterson, Michael R.
name: Shastry, B. Sriram
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Within the t-J model we study several experimentally accessible properties of the 2D-triangular lattice system Na$_x$CoO$_2$, using a numerically exact canonical ensemble study of 12 to 18 site triangular toroidal clusters as well as the icosahedron. Focusing on the doping regime of $x\sim0.7$, we study the temperature dependent chemical potential, specific heat, magnetic susceptibility and the dynamic Hall coefficient $R_H(T,ω)$ as well as the magnetic field dependent thermopower. We find a crossover between two phases near $x \sim 0.75$ in susceptibility and field suppression of the thermopower arising from strong correlations. An interesting connection is found between the temperature dependence of the diamagnetic susceptibility and the Hall-coefficient. We predict a large thermopower enhancement, arising from {\em transport corrections} to the Heikes-Mott formula, in a model situation where the sign of hopping is reversed from that applicable to Na$_x$CoO$_2$.
description: 5 pages, 4 figures
Tighter 'uniform bounds for Black-Scholes implied volatility' and the applications to root-finding
Creators: name: Choi, Jaehyuk
name: Huh, Jeonggyu
name: Su, Nan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: Computational Finance (q-fin.CP)
subject: Pricing of Securities (q-fin.PR)
subject: FOS: Economics and business
subject: 91G20, 91G60

description: Using the option delta systematically, we derive tighter lower and upper bounds of the Black-Scholes implied volatility than those in Tehranchi [SIAM J. Financ. Math. 7 (2016), 893-916]. As an application, we propose a Newton-Raphson algorithm on the log price that converges rapidly for all price ranges when using a new lower bound as an initial guess. Our new algorithm is a better alternative to the widely used naive Newton-Raphson algorithm, whose convergence is slow for extreme option prices.
Magnetic ordering of the distorted kagome antiferromagnet Y$_3$Cu$_9$(OH)$_{18}$[Cl$_8$(OH)] prepared via optimal synthesis
Creators: name: Sun, W.
name: Arh, T.
name: Gomilšek, M.
name: Koželj, P.
name: Vrtnik, S.
name: Herak, M.
name: Mi, J. -X.
name: Zorko, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Experimental studies of high-purity kagome-lattice antiferromagnets (KAFM) are of great importance in attempting to better understand the predicted enigmatic quantum spin-liquid ground state of the KAFM model. However, realizations of this model can rarely evade magnetic ordering at low temperatures due to various perturbations to its dominant isotropic exchange interactions. Such a situation is for example encountered due to sizable Dzyaloshinskii-Moriya magnetic anisotropy in YCu$_3$(OH)$_6$Cl$_3$, which stands out from other KAFM materials by its perfect crystal structure. We find evidence of magnetic ordering also in the distorted sibling compound Y$_3$Cu$_9$(OH)$_{18}$[Cl$_8$(OH)], which has recently been proposed to feature a spin-liquid ground state arising from a spatially anisotropic kagome lattice. Our findings are based on a combination of bulk susceptibility, specific heat, and magnetic torque measurements that disclose a Néel transition temperature of $T_N=11$~K in this material, which might feature a coexistence of magnetic order and persistent spin dynamics as previously found in YCu$_3$(OH)$_6$Cl$_3$. Contrary to previous studies of single crystals and powders containing impurity inclusions, we use high-purity single crystals of Y$_3$Cu$_9$(OH)$_{18}$[Cl$_8$(OH)] grown via an optimized hydrothermal synthesis route that minimizes such inclusions. This study thus demonstrates that the lack of magnetic ordering in less pure samples of the investigated compound does not originate from the reduced symmetry of spin lattice but is instead of extrinsic origin.
Multi-kernel property in high-frequency price dynamics under Hawkes model
Creators: name: Lee, Kyungsub
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Trading and Market Microstructure (q-fin.TR)
subject: FOS: Economics and business

description: This study investigates and uses multi-kernel Hawkes models to describe a high-frequency mid-price process. Each kernel represents a different responsive speed of market participants. Using the conditional Hessian, we examine whether the numerical optimizer effectively finds the global maximum of the log-likelihood function under complicated modeling. Empirical studies that use stock prices in the US equity market show the existence of multi-kernels classified as ultra-high-frequency (UHF), very-high-frequency (VHF), and high-frequency (HF). We estimate the conditional expectations of arrival times and the degree of contribution to the high-frequency activities for each kernel.
title: La falsa predisposizione di documenti e la diffamazione processuale: una sentenza esemplare
Creators: name: Cecchetto, Andrea
Publisher: name: Edizioni Ca' Foscari - Digital Publishing
Year: 2015

description: The author comments a recent decision of the Court of Venice summarizing the status quo of civil liability in the Italian legal system, focusing in particular on non-patrimonial damages caused by defamatory accusations. The trial represents an exemplary case of defamatory judgement, as of the completely unfair behaviour of the suitor.
description: Ricerche giuridiche, 3 | 1 | 2014
John Clarke (2019). Football hooliganism. Calcio e violenza operaia,
Creators: name: Zaterini, Matteo Jacopo
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2019

description: Il libro di John Clarke, Football hooliganism, edito da Derive Approdi (2019), è un lavoro fondamentale per chi si occupa di fenomeni subculturali giovanili, di classe operaia e industria culturale, e, più in generale, del rapporto che intercorre tra soggettività, produzione e consumo.
description: Eracle. Journal of Sport and Social Sciences, V. 2 (2019): Sport and Tourism in Contemporary Society
A new equation for the mid-plane potential of power law disks
Creators: name: Huré, J. -M.
name: Hersant, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that the gravitational potential in the plane of an axisymmetrical flat disk where the surface density varies as a power of the radius obeys an inhomogeneous first-order Ordinary Differential Equation (ODE) solvable by standard techniques. The potential being exactly known at the origin for any power index (and at infinity as well), the search for solutions consists of a Two-point Boundary Value Problem (TBVP) with Dirichlet conditions. The computating time is then linear with the number of grid points, instead of quadratic from direct summation methods. Complex mass distributions which can be decomposed into a mixture of power law surface density profiles are easily accessible through the superposition principle. This ODE definitively takes the place of the untractable bidimensional Poisson equation for planar calculations. It opens new horizons to investigate various aspects related to self-gravity in astrophysical disks (force calculations, stability analysis, etc.).
description: 5 pages, 1 figure, accepted for publication in A&A
On infinite matrices, Schur products, and operator measures
Creators: name: Kiukas, J.
name: Lahti, P.
name: Pellonpää, J. -P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Measures with values in the set of sesquilinear forms on a subspace of a Hilbert space are of interest in quantum mechanics, since they can be interpreted as observables with only a restricted set of possible measurement preparations. In this paper, we consider the question under which conditions such a measure extends to an operator valued measure, in the concrete setting where the measure is defined on the Borel sets of the interval $[0,2π)$ and is covariant with respect to shifts. In this case, the measure is characterized with a single infinite matrix, and it turns out that a basic sufficient condition for the extensibility is that the matrix be a Schur multiplier. Accordingly, we also study the connection between the extensibility problem and the theory of Schur multipliers. In particular, we define some new norms for Schur multipliers.
description: 16 pages, no figures, to be published in Reports of Mathematical Physics; corrected typos
1 Brief an H[ans] G[eorg] Nägeli
Brief an Nägeli ...
Creators: name: Schnyder von Wartensee, Franz Xaver
Publisher: name: [s.n.]
Year: 1824

description: von [Franz Xaver] Schnyder [von Wartensee]
description: Abschrift von Hermann Nägeli, ohne Jahr, Jahr vom Bearbeiter ermittelt und mit Bleistift ergänzt
Trans-Planckian physics and signature change events in Bose gas hydrodynamics
Creators: name: Weinfurtner, Silke
name: White, Angela
name: Visser, Matt
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Soft Condensed Matter (cond-mat.soft)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present an example of emergent spacetime as the hydrodynamic limit of a more fundamental microscopic theory. The low-energy, long-wavelength limit in our model is dominated by collective variables that generate an effective Lorentzian metric. This system naturally exhibits a microscopic mechanism allowing us to perform controlled signature change between Lorentzian and Riemannian geometries. We calculate the number of particles produced from a finite-duration Euclidean-signature event, where we take the position that to a good approximation the dynamics is dominated by the evolution of the linearized perturbations, as suggested by Calzetta and Hu [Phys. Rev. A 68 (2003) 043625]. We adapt the ideas presented by Dray et al. [Gen. Rel. Grav. 23 (1991) 967], such that the field and its canonical momentum are continuous at the signature-change event. We investigate the interplay between the underlying microscopic structure and the emergent gravitational field, focussing on its impact on particle production in the ultraviolet regime. In general, this can be thought of as the combination of trans-Planckian physics and signature-change physics. Further we investigate the possibility of using the proposed signature change event as an amplifier for analogue "cosmological particle production" in condensed matter experiments.
description: 18 pages, revtex4
Entanglement entropy in scalar field theory and $\mathbb{Z}_M$ gauge theory on Feynman diagrams
Creators: name: Iso, Satoshi
name: Mori, Takato
name: Sakai, Katsuta
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement entropy (EE) in interacting field theories has two important issues: renormalization of UV divergences and non-Gaussianity of the vacuum. In this letter, we investigate them in the framework of the two-particle irreducible formalism. In particular, we consider EE of a half space in an interacting scalar field theory. It is formulated as $\mathbb{Z}_M$ gauge theory on Feynman diagrams: $\mathbb{Z}_M$ fluxes are assigned on plaquettes and summed to obtain EE. Some configurations of fluxes are interpreted as twists of propagators and vertices. The former gives a Gaussian part of EE written in terms of a renormalized 2-point function while the latter reflects non-Gaussianity of the vacuum.
description: 7 pages, 8 figures; detailed derivations of equations and 4 figures added (v2); minor corrections, published version in PRD (v3)
Simone Tosi (2018). Cultural Stadi. Calcio, città, consumi e politiche
Creators: name: Fattori, Lorenzo
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2019

description: La centralità degli stadi nei processi di trasformazione urbana emersi negli ultimi anni è l’argomento principale del testo di Simone Tosi; argomento principale e non unico perché, in questo lavoro come nei processi ivi descritti, lo stadio, con il terreno di gioco al centro, incrocia ulteriori e diversificati campi dove si disputano partite con elevate poste in palio: politiche, amministrative e affaristiche.
description: Eracle. Journal of Sport and Social Sciences, V. 2 (2019): Sport and Tourism in Contemporary Society
Direct pulse-level compilation of arbitrary quantum logic gates on superconducting qutrits
Creators: name: Cho, Yujin
name: Beck, Kristin M.
name: Castelli, Alessandro R.
name: Wendt, Kyle A.
name: Evert, Bram
name: Reagor, Matthew J.
name: DuBois, Jonathan L
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Advanced simulations and calculations on quantum computers require high-fidelity implementations of quantum operations. The universal gateset approach builds complex unitaries from a small set of primitive gates, often resulting in a long gate sequence which is typically a leading factor in the total accumulated error. Compiling a complex unitary for processors with higher-dimensional logical elements, such as qutrits, exacerbates the accumulated error per unitary, since an even longer gate sequence is required. Optimal control methods promise time and resource efficient compact gate sequences and, therefore, higher fidelity. These methods generate pulses that can directly implement any complex unitary on a quantum device. In this work, we demonstrate any arbitrary qubit and qutrit gate can be realized with high-fidelity, which can significantly reduce the length of a gate sequence. We generate and test pulses for a large set of randomly selected arbitrary unitaries on several quantum processing units (QPUs): the LLNL Quantum Device and Integration Testbed (QuDIT) standard QPU and three of Rigetti QPUs: Ankaa-2, Ankaa-9Q-1, and Aspen-M-3. On the QuDIT platform's standard QPU, the average fidelity of random qutrit gates is 97.9+-0.5% measured with conventional QPT and 98.8+-0.6% from QPT with gate folding. Rigetti's Ankaa-2 achieves random qubit gates with an average fidelity of 98.4+-0.5% (conventional QPT) and 99.7+-0.1% (QPT with gate folding). On Ankaa-9Q-1 and Aspen-M-3, the average fidelities with conventional qubit QPT measurements were higher than 99%. We show that optimal control gates are robust to drift for at least three hours and that the same calibration parameters can be used for all implemented gates. Our work promises the calibration overheads for optimal control gates can be made small enough to enable efficient quantum circuits based on this technique.
description: 13 pages, 8 figures
21 cm fluctuations from inhomogeneous X-ray heating before reionization
Creators: name: Pritchard, Jonathan R.
name: Furlanetto, Steven R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Many models of early structure formation predict a period of heating immediately preceding reionization, when X-rays raise the gas temperature above that of the cosmic microwave background. These X-rays are often assumed to heat the intergalactic medium (IGM) uniformly, but in reality they will heat the gas more strongly closer to the sources. We develop a framework for calculating fluctuations in the 21 cm brightness temperature that originate from this spatial variation in the heating rate. High-redshift sources are highly clustered, leading to significant gas temperature fluctuations (with fractional variations ~40%, peaking on k~0.1 Mpc^{-1} scales). This induces a distinctive peak-trough structure in the angle-averaged 21 cm power spectrum, which may be accessible to the proposed Square Kilometre Array. This signal reaches the ~10 mK level, and is stronger than that induced by Lyman alpha flux fluctuations. As well as probing the thermal evolution of the IGM before reionization, this 21 cm signal contains information about the spectra of the first X-ray sources. Finally, we consider disentangling temperature, density and Lyman alpha flux fluctuations as functions of redshift.
description: 14 pages, 12 figures, accepted by MNRAS, subsection and figure added, text reworked for clarity
Woodchopper Homesite I (B-roll)
Creators: name: Hammond, Jon
name: Hernandez, Betty
name: Hicks, Lucille
name: Everson, Merlene
name: Turner, Julie
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This recording contains speakers reminiscing over past events and interactions that occurred at the homesite in Woodchopper around the 1940s.
Nicola De Ianni (2019). Maurizio Sarri. Una vita da raccontare
Creators: name: Tirino, Mario
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2019

description: Quanto Maurizio Sarri sia un personaggio rilevante nel mondo della cultura calcistica e sportiva italiana lo attestano la quantità di prime pagine dei quotidiani sportivi, di news su siti, magazine e fanzine online, di commenti, opinioni, reazioni nei tanti rivoli dei social network nel lasso di tempo intercorso tra il 29 maggio, giorno in cui con il Chelsea ha conquistato l’Europa League, primo trofeo della sua lunga carriera, al 16 giugno, quando è stato ufficializzato il suo ingaggio da parte della Juventus.
description: Eracle. Journal of Sport and Social Sciences, V. 2 (2019): Sport and Tourism in Contemporary Society
1 Brief an H[ans] G[eorg] Nägeli
Brief an Nägeli ...
Creators: name: Schnyder von Wartensee, Franz Xaver
Publisher: name: [s.n.]
Year: 1819

description: von [Franz Xaver Schnyder von Wartensee]
description: Abschrift von Hermann Nägeli
description: Abschrift datiert 1817, von späterer Hand mit Bleistift korrigiert auf 1819
Compensation of Multicore Fiber Skew Effects for Radio over Fiber mmWave Antenna Beamforming
Creators: name: Nikas, Thomas
name: Pikasis, Evangelos
name: Karabetsos, Sotiris
name: Syvridis, Dimitris
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In 5G networks, a Radio over Fiber architecture utilizing multicore fibers can be adopted for the transmission of mmwave signals feeding phased array antennas. The mmwave signals undergo phase shifts imposed by optical true time delay networks, to provide squint free beams. Multicore fibers are used to transfer the phase shifted optical signals. However, the intercore static skew of these fibers, if not compensated, distorts the radiation pattern. We propose an efficient method to compensate the differential delays, without full equalization of the transmission path lengths, reducing the power loss and complexity. Statistical analysis shows that regardless of the skew distribution, the frequency response can be estimated with respect to the rms skew delays. Simulation analysis of the complete Radio over Fiber and RF link validates the method.
Daniele Serapiglia (2018). Uno sport per tutti. Storia sociale della pallavolo italiana (1918- 1990)
Creators: name: Tuselli, Alessia
Publisher: name: Eracle. Journal of Sport and Social Sciences
Year: 2019

description: “Ci siamo affermati nelle scuole perché sostenevamo il valore del volley come mezzo per il raggiungimento di quegli scopi educativi che la scuola proponeva. La scuola non deve creare campioni, e per le sue caratteristiche la pallavolo è uno sport che si prestava alla pratica di tutti” (Serapiglia, 2018, p. 111).
description: Eracle. Journal of Sport and Social Sciences, V. 2 (2019): Sport and Tourism in Contemporary Society
On the Gromov hyperbolicity of the Kobayashi metric on strictly pseudoconvex regions in the almost complex case
Creators: name: Blanc-Centi, Léa
Publisher: name: arXiv
Year: 2008
Subjects: subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 32T15, 32Q45, 32Q60, 53C22

description: We prove that every bounded strictly $J$-convex region equipped with the Kobayashi metric is hyperbolic in the sense of Gromov. We apply this result to the study of the dynamics of pseudo-holomorphic maps.
description: 16 pages, 4 figures
On the minimal power of $q$ in a Kazhdan-Lusztig polynomial
Creators: name: Gaetz, Christian
name: Gao, Yibo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: For $w$ in the symmetric group, we provide an exact formula for the smallest positive power $q^{h(w)}$ appearing in the Kazhdan-Lusztig polynomial $P_{e,w}(q)$. We also provide a tight upper bound on $h(w)$ in simply-laced types, resolving a conjecture of Billey-Postnikov from 2002.
description: 24 pages. v2: minor corrections, to appear in Advances in Math
Multi-Robot Relative Pose Estimation and IMU Preintegration Using Passive UWB Transceivers
Creators: name: Shalaby, Mohammed Ayman
name: Cossette, Charles Champagne
name: Ny, Jerome Le
name: Forbes, James Richard
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Ultra-wideband (UWB) systems are becoming increasingly popular as a means of inter-robot ranging and communication. A major constraint associated with UWB is that only one pair of UWB transceivers can range at a time to avoid interference, hence hindering the scalability of UWB-based localization. In this paper, a ranging protocol is proposed that allows all robots to passively listen on neighbouring communicating robots without any hierarchical restrictions on the role of the robots. This is utilized to allow each robot to obtain more range measurements and to broadcast preintegrated inertial measurement unit (IMU) measurements for relative extended pose state estimation directly on SE2(3). Consequently, a simultaneous clock-synchronization and relative-pose estimator (CSRPE) is formulated using an on-manifold extended Kalman filter (EKF) and is evaluated in simulation using Monte-Carlo runs for up to 7 robots. The ranging protocol is implemented in C on custom-made UWB boards fitted to 3 quadcopters, and the proposed filter is evaluated over multiple experimental trials, yielding up to 48% improvement in localization accuracy.
1 Brief an H[ans] G[eorg] Nägeli
Brief an Nägeli ...
Creators: name: Schnyder von Wartensee, Franz Xaver
Publisher: name: [s.n.]
Year: 1820

description: von [Franz Xaver] Schnyder [von Wartensee]
description: Abschrift von Hermann Nägeli; letzter Abschnitt auf Blatt 6. gehört möglicherweise zu einem anderen Brief
Branch Point Twist Field Form Factors in the sine-Gordon Model I: Breather Fusion and Entanglement Dynamics
Creators: name: Castro-Alvaredo, Olalla A.
name: Horvath, David X.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The quantum sine-Gordon model is the simplest massive interacting integrable quantum field theory whose two-particle scattering matrix is generally non-diagonal. As such, it is a model that has been extensively studied, especially in the context of the bootstrap programme. In this paper we compute the form factors of a special local field known as the branch point twist field, whose correlation functions are building blocks for measures of entanglement. We consider the attractive regime where the theory posesses a particle spectrum consisting of a soliton, an antisoliton (of opposite $U(1)$ charges) and several (neutral) breathers. In the breather sector we exploit the fusion procedure to compute form factors of heavier breathers from those of lighter ones. We apply our results to the study of the entanglement dynamics after a small mass quench and for short times. We show that in the presence of two or more breathers the von Neumann and Rényi entropies display undamped oscillations in time, whose frequencies are proportional to the even breather masses and whose amplitudes are proportional to the breather's one-particle form factor.
description: 35 pages; 9 figures; 3 tables
L’organisation du VIIème congrès des savants à Naples en 1845
Creators: name: D'Angelo, Fabio
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

The congresses of scientists organized annually from 1839 to 1847 in Italy have been important events both scientifically and politically. Moreover, they have been important social chances for intellectuals from the Italian establishment to meet each other. In 1845 the 7th Congress took place in Naples. Scientists were encouraged to take part in it because of the celebrity of the city itself, famous for its archaeological and artistic heritage and for the pleasant life. This essay shows in which way the congress helped in promoting the city of Naples as a European top destination thanks to the presence of the scientists, transforming it in a sort of brand able to express many different meanings.

description: MDCCC 1800
Immagini di un’epoca
Creators: name: Paris, Laura
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

L’opera di Giuseppe e Alberto Rieger nella Trieste ottocentesca

description: MDCCC 1800
Le acquisizioni venete del vescovo Strossmayer
Creators: name: Dulibić, Ljerka
name: Pasini Tržec, Iva
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

The collecting activity of Bishop Josip Juraj Strossmayer (1815-1905), whose donation of Renaissance and Baroque paintings forms a nucleus of today’s Gallery of Old Masters of the Croatian Academy of Sciences and Arts, is the object of a research based on the archival sources, primarily the abundant correspondence of the Bishop and his intermediaries for the painting acquisitions. Apart in Rome, Bishop had a permanent agent only in Venice, the Rijeka painter Giovanni Simonetti (1817-1880). He did not only buy paintings for Bishop’s collection, but was active as restorer, adviser and a Bishop’s link to the circle of Venetian painters, restorers and connoisseurs, whose activities often spanned from collecting to art dealing as well. Although Bishop’s Venetian acquisitions are not so good documented as his purchases in Rome, on the basis of the comparative analysis of available sources it is possible to reconstruct the procurement circumstances and the provenance of particular paintings.

description: MDCCC 1800
U(1) symmetry resolved entanglement in free 1+1 dimensional field theories via form factor bootstrap
Creators: name: Horvath, David X.
name: Capizzi, Luca
name: Calabrese, Pasquale
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We generalise the form factor bootstrap approach to integrable field theories with U(1) symmetry to derive matrix elements of composite branch-point twist fields associated with symmetry resolved entanglement entropies. The bootstrap equations are solved for the free massive Dirac and complex boson theories, which are the simplest theories with U(1) symmetry. We present the exact and complete solution for the bootstrap, including vacuum expectation values and form factors involving any type and arbitrarily number of particles. The non-trivial solutions are carefully cross-checked by performing various limits and by the application of the Delta-theorem. An alternative and compact determination of the novel form factors is also presented. Based on the form factors of the U(1) composite branch-point twist fields, we re-derive earlier results showing entanglement equipartition for an interval in the ground state of the two models.
Spatial adiabatic passage of ultracold atoms in optical tweezers
Creators: name: Florshaim, Yanay
name: Zohar, Elad
name: Koplovich, David Zeev
name: Meltzer, Ilan
name: Weill, Rafi
name: Nemirovsky, Jonathan
name: Stern, Amir
name: Sagi, Yoav
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Spatial adiabatic passage (SAP) is a process that facilitates the transfer of a wave packet between two localized modes that are not directly coupled, but rather interact through an intermediate third mode. By employing a counter-intuitive adiabatic pulse sequence, this technique achieves minimal population in the intermediate state and high transfer efficiency. Here, we report the implementation of SAP for transferring massive particles between three micro-optical traps. We begin by preparing ultracold fermionic atoms in low vibrational eigenstates of one trap and then manipulate the distance between the three traps to execute the SAP protocol. We observe a smooth transfer of atoms between the two outer traps, accompanied by a low population in the central trap. We validate our findings and underscore the significance of the counter-intuitive sequence by reversing the order of the pulse sequence. Additionally, we investigate the influence of the tunneling rate and the time delay between the motion of the two external tweezers on the fidelity of the process. Our results open up new possibilities for advanced control and manipulation schemes in optical tweezer array platforms.
description: 6 pages, 4 figures
WES-ELIXIR: A Language-Agnostic Execution Service for Bioinformatics Workflows
Creators: name: Gypas, Foivos
name: Jaroslaw Surkont
name: Sayers, Kevin
name: ELIXIR Switzerland
name: ELIXIR Finland
name: ELIXIR Hub
name: ELIXIR Germany
name: ELIXIR Italy
name: Schwede, Torsten
name: Zavolan, Mihaela
name: Kanitz, Alexander
Publisher: name: F1000 Research Limited
Year: 2019

description: The availability of software solutions enabling the reuse and rapid application of computational workflows is essential for handling the dramatically accumulating volumes of genomics and imaging data in biomedical research and the healthcare sector. Specifically, scientists and healthcare professionals need easy and secure access to public and controlled data, as well as distributed interoperable platforms on which they can be analyzed. To facilitate this process, international organizations such as ELIXIR and the Global Alliance for Genomics and Health (GA4GH) are developing community standards for the reproducible execution of data analysis workflows in the cloud. Together with our ELIXIR partners, we are developing WES-ELIXIR, a workflow language-agnostic implementation of the GA4GH’s Workflow Execution Service (WES) schema. It will wrap different workflow engines, harmonize their behavior, provide authorization/security, and enable distribution of tasks to connected execution backends. The developers are dedicated to open-source software, FAIR guiding principles and the strict adoption and further development of relevant community standards based on broad consensus. Contributions are welcome (https://github.com/elixir-europe/WES-ELIXIR).
In Situ Treatment of a Scanning Gate Microscopy Tip
Creators: name: Gildemeister, A. E.
name: Ihn, T.
name: Sigrist, M.
name: Ensslin, K.
name: Driscoll, D. C.
name: Gossard, A. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In scanning gate microscopy, where the tip of a scanning force microscope is used as a movable gate to study electronic transport in nanostructures, the shape and magnitude of the tip-induced potential are important for the resolution and interpretation of the measurements. Contaminations picked up during topography scans may significantly alter this potential. We present an in situ high-field treatment of the tip that improves the tip-induced potential. A quantum dot was used to measure the tip-induced potential.
description: 3 pages, 1 figure, minor changes to fit published version