cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Characterising dark matter searches at colliders and direct detection experiments: Vector mediators
Creators: name: Buchmueller, Oliver
name: Dolan, Matthew J.
name: Malik, Sarah A.
name: McCabe, Christopher
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce a Minimal Simplified Dark Matter (MSDM) framework to quantitatively characterise dark matter (DM) searches at the LHC. We study two MSDM models where the DM is a Dirac fermion which interacts with a vector and axial-vector mediator. The models are characterised by four parameters: the DM and mediator masses, and the mediator couplings to DM and quarks. The MSDM models accurately capture the full event kinematics, and the dependence on all masses and couplings can be systematically studied. The interpretation of mono-jet searches in this framework can be used to establish an equal-footing comparison with direct detection experiments. For theories with a vector mediator, LHC mono-jet searches possess better sensitivity than direct detection searches for light DM masses (less than 5 GeV). For axial-vector mediators, LHC and direct detection searches generally probe orthogonal directions in the parameter space. We explore the projected limits of these searches from the ultimate reach of the LHC and multi-ton xenon direct detection experiments, and find that the complementarity of the searches remains. Finally, we provide a comparison of limits in the MSDM and effective field theory (EFT) frameworks to highlight the deficiencies of the EFT framework, particularly when exploring the complementarity of mono-jet and direct detection searches.
description: 32 pages, 12 figures. v2: Minor changes to match journal (JHEP) version
Finite generation of Cox rings
Creators: name: González, José Luis
name: Laface, Antonio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 14E30 (Primary) 14C20, 14L24, 14M25, 13A02 (Secondary)

description: In this expository note we discuss a class of graded algebras named Cox rings, which are naturally associated to algebraic varieties generalizing the homogeneous coordinate rings of projective spaces. Whenever the Cox ring is finitely generated, the variety admits a quotient presentation by a quasitorus, which resembles the quotient construction of the projective space. We discuss the problem of the finite generation of Cox rings from a geometric perspective and provide examples of both the finitely and non-finitely generated cases.
description: 17 pages, 6 figures
$ρ$-assoc and $ρ$-dist of wfs and f in $Σ$ and $\mathscr{L_{HA}}$-theory on 0-OL
Creators: name: Suárez, Lukas Restrepo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03B05

description: In this paper we create pseudo associativity ($ρ$-assoc) and pseudo distributivity ($ρ$-dist) properties for not fundamental operators NFO $\downarrow$, $\uparrow$, using two semantic rules, also we build proofs for this result in Hilbert-Ackermann ($\mathscr{HA}$) axiomatic system, all in the 0-order logic (0-OL) context.
description: 7 pages
Temperature dependence of spin diffusion length and spin Hall angle in Au and Pt
Creators: name: Isasa, Miren
name: Villamor, Estitxu
name: Hueso, Luis E.
name: Gradhand, Martin
name: Casanova, Fèlix
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have studied the spin transport and the spin Hall effect as a function of temperature for platinum (Pt) and gold (Au) in lateral spin valve structures. First, by using the spin absorption technique, we extract the spin diffusion length of Pt and Au. Secondly, using the same devices, we have measured the spin Hall conductivity and analyzed its evolution with temperature to identify the dominant scattering mechanisms behind the spin Hall effect. This analysis confirms that the intrinsic mechanism dominates in Pt whereas extrinsic effects are more relevant in Au. Moreover, we identify and quantify the phonon-induced skew scattering. We show that this contribution to skew scattering becomes relevant in metals such as Au, with a low residual resistivity.
description: 13 pages, 5 figures
Riflessioni sull'europeizzazione delle identità nazionali
Creators: name: CASOLARI, FEDERICO
Publisher: name: Zenodo
Year: 2023

description: Federico Casolari, Alma Mater Studiorum – Università di Bologna, Riflessioni sull'europeizzazione delle identità nazionali
V Convegno Annuale AISDUE - Padova 2 e 3 Novembre 2023
Il Diritto dell'Unione europea nei rapporti tra ordinamenti: tra collaborazione, integrazione e identità
Sessione 2: I valori dell'Unione come limiti alle scelte costituzionali degli Stati membri
Relazione - Abstract
Conference Editor: Bernardo Cortese, Università degli Studi di Padova - DiPIC
*
Comitato scientifico AISDUE: Antonio Tizzano, Patrizia De Pasquale, Pietro Manzini, Paola Mori, Francesco Rossi Dal Pozzo, Lorenzo Schiano di Pepe, Fabio Spitaleri
Representations of étale groupoids on $L^p$-spaces
Creators: name: Gardella, Eusebio
name: Lupini, Martino
Publisher: name: arXiv
Year: 2014
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 47L10, 22A22 (Primary) 46H05 (Secondary)

description: For $p\in (1,\infty)$, we study representations of étale groupoids on $L^{p}$-spaces. Our main result is a generalization of Renault's disintegration theorem for representations of étale groupoids on Hilbert spaces. We establish a correspondence between $L^{p}$-representations of an étale groupoid $G$, contractive $L^{p}$-representations of $C_{c}(G)$, and tight regular $L^{p}$-representations of any countable inverse semigroup of open slices of $G$ that is a basis for the topology of $G$. We define analogs $F^{p}(G)$ and $F_{\mathrm{red}}^{p}(G)$ of the full and reduced groupoid C*-algebras using representations on $L^{p}$-spaces. As a consequence of our main result, we deduce that every contractive representation of $F^{p}(G)$ or $F_{\mathrm{red}}^{p}(G)$ is automatically completely contractive. Examples of our construction include the following natural families of Banach algebras: discrete group $L^{p}$-operator algebras, the analogs of Cuntz algebras on $L^{p}$-spaces, and the analogs of AF-algebras on $L^{p}$-spaces. Our results yield new information about these objects: their matricially normed structure is uniquely determined. More generally, groupoid $L^{p}$-operator algebras provide analogs of several families of classical C*-algebras, such as Cuntz-Krieger C*-algebras, tiling C*-algebras, and graph C*-algebras.
description: 33 pages. v2: minor changes. v3: more minor changes. To appear in Advances in Math
Inertia-Constrained Pixel-by-Pixel Nonnegative Matrix Factorisation: a Hyperspectral Unmixing Method Dealing with Intra-class Variability
Creators: name: Revel, Charlotte
name: Deville, Yannick
name: Achard, Véronique
name: Briottet, Xavier
Publisher: name: arXiv
Year: 2017
Subjects: subject: Methodology (stat.ME)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Blind source separation is a common processing tool to analyse the constitution of pixels of hyperspectral images. Such methods usually suppose that pure pixel spectra (endmembers) are the same in all the image for each class of materials. In the framework of remote sensing, such an assumption is no more valid in the presence of intra-class variabilities due to illumination conditions, weathering, slight variations of the pure materials, etc... In this paper, we first describe the results of investigations highlighting intra-class variability measured in real images. Considering these results, a new formulation of the linear mixing model is presented leading to two new methods. Unconstrained Pixel-by-pixel NMF (UP-NMF) is a new blind source separation method based on the assumption of a linear mixing model, which can deal with intra-class variability. To overcome UP-NMF limitations an extended method is proposed, named Inertia-constrained Pixel-by-pixel NMF (IP-NMF). For each sensed spectrum, these extended versions of NMF extract a corresponding set of source spectra. A constraint is set to limit the spreading of each source's estimates in IP-NMF. The methods are tested on a semi-synthetic data set built with spectra extracted from a real hyperspectral image and then numerically mixed. We thus demonstrate the interest of our methods for realistic source variabilities. Finally, IP-NMF is tested on a real data set and it is shown to yield better performance than state of the art methods.
Light axion-like dark matter must be present during inflation
Creators: name: Visinelli, Luca
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Axion-like particles (ALPs) might constitute the totality of the cold dark matter (CDM) observed. The parameter space of ALPs depends on the mass of the particle $m$ and on the energy scale of inflation $H_I$ , the latter being bound by the non-detection of primordial gravitational waves. We show that the bound on HI implies the existence of a mass scale $m_χ= 10 {\rm \,neV} ÷ 0.5 {\rm \,peV}$, depending on the ALP susceptibility $χ$, such that the energy density of ALPs of mass smaller than $m_χ$ is too low to explain the present CDM budget, if the ALP field has originated after the end of inflation. This bound affects Ultra-Light Axions (ULAs), which have recently regained popularity as CDM candidates. Light ($m < m_χ$) ALPs can then be CDM candidates only if the ALP field has already originated during the inflationary period, in which case the parameter space is constrained by the non-detection of axion isocurvature fluctuations. We comment on the effects on these bounds from additional physics beyond the Standard Model, besides ALPs.
description: 12 pages, 3 figures. Improved references
A subexponential parameterized algorithm for Directed Subset Traveling Salesman Problem on planar graphs
Creators: name: Marx, Dániel
name: Pilipczuk, Marcin
name: Pilipczuk, Michał
Publisher: name: arXiv
Year: 2017
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: There are numerous examples of the so-called ``square root phenomenon'' in the field of parameterized algorithms: many of the most fundamental graph problems, parameterized by some natural parameter $k$, become significantly simpler when restricted to planar graphs and in particular the best possible running time is exponential in $O(\sqrt{k})$ instead of $O(k)$ (modulo standard complexity assumptions). We consider a classic optimization problem Subset Traveling Salesman, where we are asked to visit all the terminals $T$ by a minimum-weight closed walk. We investigate the parameterized complexity of this problem in planar graphs, where the number $k=|T|$ of terminals is regarded as the parameter. We show that Subset TSP can be solved in time $2^{O(\sqrt{k}\log k)}\cdot n^{O(1)}$ even on edge-weighted directed planar graphs. This improves upon the algorithm of Klein and Marx [SODA 2014] with the same running time that worked only on undirected planar graphs with polynomially large integer weights.
description: Paper published at SIAM J. Comput. The Steiner Tree part will be moved to a separate paper
Il ruolo dell'effettività nei rapporti tra cittadinanza statale e cittadinanza dell'Unione europea
Creators: name: MARINAI, SIMONE
Publisher: name: Zenodo
Year: 2023

description: Simone Marinai, Università di Pisa, Il ruolo dell'effettività nei rapporti tra cittadinanza statale e cittadinanza dell'Unione europea 
V Convegno Annuale AISDUE - Padova 2 e 3 Novembre 2023
Il Diritto dell'Unione europea nei rapporti tra ordinamenti: tra collaborazione, integrazione e identità
Sessione 3: Cittadinanza dell'Unione, tutela degli status personali e identità costituzionali nazionali: quale equilibrio?
Relazione - Abstract
Conference Editor: Bernardo Cortese, Università degli Studi di Padova - DiPIC
*
Comitato scientifico AISDUE: Antonio Tizzano, Patrizia De Pasquale, Pietro Manzini, Paola Mori, Francesco Rossi Dal Pozzo, Lorenzo Schiano di Pepe, Fabio Spitaleri
Parque Astronómico de Atacama: An ideal site for millimeter, submillimeter, and mid-infrared astronomy
Creators: name: Bustos, Ricardo
name: Rubio, Mónica
name: Otárola, Angel
name: Nagar, Neil
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The area of Chajnantor, at more than 5000 meters altitude in northern Chile, offers unique atmospheric and operational conditions which arguably make it the best site in the world for millimeter, submillimeter, and mid-infrared observatories. Long-term monitoring of the precipitable water vapor (PWV) column on the Chajnantor plateau has shown its extreme dryness with annual median values of 1.1 mm. Simultaneous measurements of PWV on the Chajnantor plateau (5050 m) and on Cerro Chajnantor (5612 m) show that the latter is around 36% lower under normal atmospheric conditions and up to 80% lower than the plateau in the presence of temperature inversion layers. Recently, the Government of Chile has consolidated the creation of the Parque Astronómico de Atacama (Atacama Astronomical Park), an initiative of the Chilean Commission for Science and Technology (CONICYT). This new Parque offers an opportunity for national and international projects to settle within its boundaries, gain access to an extremely dry site that is suitable for observations over a broad spectral range, especially in the millimeter to mid-infrared wavelengths, and benefit from operational and logistical support within a secure legal framework.
description: 9 pages, 7 figures. Published in PASP
Der Körper als Medium traumatischer Erinnerung bei Lyonel Trouillot und Edwidge Danticat
Creators: name: Borst, Julia
Publisher: name: Frank & Timme
Year: 2017
Subjects: subject: Haiti
subject: Trauma
subject: Körper
subject: Gewalt
subject: Sklaverei
subject: 300

description: En Haïti, le traumatisme de l’histoire n’a point cessé avec l’indépendance et la fin de l’esclavage, mais s’est prolongé dans les structures géopolitiques du pouvoir, dans la répression dictatoriale et surtout dans la banalisation de la violence dans le passé plus récent. De nombreux écrivains et écrivaines contemporains ont eu recours au sujet de cette expérience de la violence et l’ont transformé en mémoire à travers la littérature. La violence représente un phénomène qui évoque l’expérience de la corporéité et inclut en même temps un moment traumatisant de manière qu’elle peut être saisie comme attaque contre l’intégrité physique et psychique du sujet. Pourtant, l’expérience traumatique échappe à la mémoire consciente. Dans cette contribution, j’étudie dans quelle mesure la littérature haïtienne contemporaine présente le corps comme médium de la mémoire traumatique de la violence. En me référant à deux des écrivains les plus connus de la littérature haïtienne de l’ère post-Duvalier – Edwidge Danticat et Lyonel Trouillot –, j’illustré que l’expérience de la violence se manifeste au/dans le corps et que le traumatisme s’inscrit dans celui-ci de manière qu’il se révèle être le réceptacle des mémoires indicibles. Selon mon hypothèse, la violence et le traumatisme deviennent visibles dans le corps et le munissent d’une topographie de la violence dont les traces peuvent être rendues lisibles par le texte littéraire. Même si l’acte de l’écriture n’est pas capable d’annuler la violence inscrite dans les corps, il permet pourtant à travers la langue la construction narrative d’une mémoire collective de la violence subie et son intégration constructive dans l’image de soi de la société haïtienne.
Photoferroelectric oxides
Creators: name: Fina, I.
name: Paillard, C.
name: Dkhil, B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Giant photovoltaic effect due to bulk photovoltaic effect observed in multiferroic BiFeO3 thin films has triggered a renewed interest on photoferroelectric materials for photovoltaic applications. Tremendous advance has been done to improve power conversion efficiency (up to up to 8.1%) in photoferroelectrics via absorption increase using narrow bandgap ferroelectrics. Other strategies, as it is the more efficient use of ferroelectric internal electric field, are ongoing. Moreover, as a by-product, several progress have been also achieved on photostriction that is the photo-induced deformation phenomenon. Here, we review ongoing and promising routes to improve ferroelectrics photoresponse.
title: "Ich nehme mich nur aus als eine, die ihre Sünden bekennt"
Creators: name: Hamerla, Elsa
Year: 2022

description: Für diese Arbeit untersuche ich zwei Erinnerungstexte an die Zeit des Nationalsozialismus meiner preußischen Mutter Ruth Medger, die eine „leidenschaftliche Nationalsozialistin“ gewesen war. In ihrer Autobiographie von 1946 aus post-nazistischer Schreibposition, gehe ich ihrer Hinwendung zur NS-„Volksgemeinschaft“ ab 1934 nach, den Kontinuitätslinien ihrer Kolonialerfahrung in Afrika 1937 sowie ihrer Thematisierung des nationalsozialistischen Terrorstaates. Über Ruth Medgers Reichseinsatz in der deutsch besetzten Ukraine 1943 zur Betreuung von „Volksdeutschen“ mit der NSV schrieb sie zwei Versionen aus diametralen ideologischen Haltungen: einen Erlebnisbericht von 1944 im Sinne der NS-Propaganda, sowie ein Kapitel ihrer Autobiographie, wo sie die Berichte des nationalsozialistischen Genozids an den ukrainischen Jüdinnen und Juden wiedergibt. Ruth Medger konvertierte im Anschluss 1944 zum Katholizismus, die im Zentrum ihrer Autobiographie steht. Diese verfasste sie in der Umbruchphase nach Kriegsende in Salzburg, auch für die amerikanischen Behörden, als Nachweis für ihre Abwendung vom Nationalsozialismus. Sie bindet sich hier ein in den Diskurs um die deutsche „Kollektivschuld“. Zur Konkretisierung ihrer unterschiedlichen und konträren Identitätsentwürfe analysiere ich Ruth Medgers Thematisierung ihrer Position als Frau in den verschiedenen gesellschaftlichen Zusammenhängen und ideologischen Vorstellungen.
description: For this Master’s-Thesis, I examine two memoir texts of the National Socialist period by my Prussian mother Ruth Medger, who had been a "passionate National Socialist". In her autobiography from 1946, from a post-Nazi writing position, I trace her turn to the Nazi "Volksgemeinschaft" from 1934, the lines of continuity of her colonial experience in Africa in 1937, and her thematisation of the National Socialist terror state. She wrote two versions about her “Reichseinsatz” in the German-occupied Ukraine in 1943, where she went with the NSV: to look after the "Volksdeutschen", from diametrically opposed ideological stances A Report from 1944 in the sense and language of Nazi propaganda, and a chapter of her autobiography, where she confesses the reports she have heard about the Nazi genocide of Ukrainian Jews. Ruth Medger subsequently converted to Catholicism in 1944, which is the main focus of her autobiography. She wrote this in Salzburg during the period of upheaval after the end of the war, as well for the American authorities, as proof of her turning away from National Socialism. Here she ties herself into the discourse on German "Kollektivschuld". In order to make her different and contrary concepts of identity explicit, I analyze Ruth Medger's gender-position in the various social contexts and her ideological conceptions.
Identità nazionali, valori comuni e condizionalità
Creators: name: MORI, PAOLA
Publisher: name: Zenodo
Year: 2023

description: Paola Mori, Università degli studi Magna Graecia di Catanzaro, Identità nazionali, valori comuni e condizionalità
V Convegno Annuale AISDUE - Padova 2 e 3 Novembre 2023
Il Diritto dell'Unione europea nei rapporti tra ordinamenti: tra collaborazione, integrazione e identità
Sessione 2: I valori dell'Unione come limiti alle scelte costituzionali degli Stati membri
Relazione - Abstract
Conference Editor: Bernardo Cortese, Università degli Studi di Padova - DiPIC
*
Comitato scientifico AISDUE: Antonio Tizzano, Patrizia De Pasquale, Pietro Manzini, Paola Mori, Francesco Rossi Dal Pozzo, Lorenzo Schiano di Pepe, Fabio Spitaleri
Multichannel one-to-two transition amplitudes in a finite volume
Creators: name: Briceño, Raúl A.
name: Hansen, Maxwell T.
name: Walker-Loud, André
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We perform a model-independent, non-perturbative investigation of two-point and three-point finite-volume correlation functions in the energy regime where two-particle states can go on-shell. We study three-point functions involving a single incoming particle and an outgoing two-particle state, relevant, for example, for studies of meson decays (e.g., B-to-pi Kll) or meson photo production (e.g., pi gamma-to-pi pi). We observe that, while the spectrum solely depends on the on-shell scattering amplitude, the correlation functions also depend on off-shell amplitudes. The main result of this work is a generalization of the Lellouch-Luscher formula relating matrix elements of currents in finite and infinite spatial volumes. We extend that work by considering a theory with multiple, strongly-coupled channels and by accommodating external currents which inject arbitrary four-momentum as well as arbitrary angular momentum. The result is exact up to exponentially suppressed corrections governed by the pion mass times the box size. We also apply our master equation to various examples, including the two processes mentioned above as well as examples where the final state is an admixture of two open channels.
description: 29 pages, 5 figures, 2 tables; edits made to the text and equations, main results remain unchanged, P-wave example has been corrected, consistent with the journal version
Evidence of patchy hydrogen reionization from an extreme Ly$α$ trough below redshift six
Creators: name: Becker, George D.
name: Bolton, James S.
name: Madau, Piero
name: Pettini, Max
name: Ryan-Weber, Emma V.
name: Venemans, Bram P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report the discovery of an extremely long ($\sim$110 Mpc/$h$) and dark ($τ_{\rm eff} \gtrsim 7$) Ly$α$ trough extending down to $z \simeq 5.5$ towards the $z_{\rm em} \simeq 6.0$ quasar ULAS J0148+0600. We use these new data in combination with Ly$α$ forest measurements from 42 quasars at $4.5 \le z_{\rm em} \le 6.4$ to conduct an updated analysis of the line-of-sight variance in the intergalactic Ly$α$ opacity over $4 \le z \le 6$. We find that the scatter in transmission among lines of sight near $z \sim 6$ significantly exceeds theoretical expectations for either a uniform ultraviolet background (UVB) or simple fluctuating UVB models in which the mean free path to ionizing photons is spatially invariant. The data, particularly near $z \simeq 5.6$-5.8, instead require fluctuations in the volume-weighted hydrogen neutral fraction that are a factor of 3 or more beyond those expected from density variations alone. We argue that these fluctuations are most likely driven by large-scale variations in the mean free path, consistent with expectations for the final stages of inhomogeneous hydrogen reionization. Even by $z \simeq 5.6$, however, a large fraction of the data are consistent with a uniform UVB, and by $z \sim 5$ the data are fully consistent with opacity fluctuations arising solely from the density field. This suggests that while reionization may be ongoing at $z \sim 6$, it has fully completed by $z \sim 5$.
description: 19 pages, 20 figures, MNRAS, in press
Experimental Realization of Acoustic Chern Insulator
Creators: name: Zhu, Yifan
name: Peng, Yugui
name: Fan, Xudong
name: Yang, Jing
name: Liang, Bin
name: Zhu, Xuefeng
name: Cheng, Jianchun
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological insulators are new states of matter in which the topological phase originates from symmetry breaking. Recently, time-reversal invariant topological insulators were demonstrated for classical wave systems, such as acoustic systems, but limited by inter-pseudo-spin or inter-valley backscattering. This challenge can be effectively overcome via breaking the time-reversal symmetry. Here, we report the first experimental realization of acoustic topological insulators with nonzero Chern numbers, viz., acoustic Chern insulator (ACI), by introducing an angular-momentum-biased resonator array with broken Lorentz reciprocity. High Q-factor resonance is leveraged to reduce the required speed of rotation. Experimental results show that the ACI featured with a stable and uniform metafluid flow bias supports one-way nonreciprocal transport of sound at the boundaries, which is topologically immune to the defect-induced scatterings. Our work opens up opportunities for exploring unique observable topological phases and developing practical nonreciprocal devices in acoustics.
description: 16 pages, 4 figures
title: Hannah Arendt, Ágnes Heller e la nostalgia del mondo
Creators: name: Piraino , Lucrezia
Publisher: name: Roma Tre-Press
Year: 2009

description: Segnate dall'esperienza del totalitarismo e colpite direttamente dalla tragedia dell'Olocausto, le riflessioni di Hannah Arendt e Ágnes Heller sembrano essere appunto mosse da una profonda nostalgia nei confronti della sfera fragile e contingente degli affari umani. Una nostalgia che non si è mai arresa dinanzi alla fatale ineluttabilità della frattura che si è creata nella storia europea più recente e nella millenaria tradizione filosofica greco-occidentale: definitivamente private di senso dalla violenza di un male «incomprensibile, impunibile, imperdonabile».

description: B@belonline vol. 7 Ebraismo Etica Politica. Per Ágnes Heller
A Shell Model for Buoyancy-Driven Turbulence
Creators: name: Kumar, Abhishek
name: Verma, Mahendra K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this paper we present a unified shell model for stably stratified and convective turbulence. Numerical simulation of this model for stably stratified flow shows Bolgiano-Obukhbov scaling in which the kinetic energy spectrum varies as $k^{-11/5}$. We also observe a dual scaling ($k^{-11/5}$ and $k^{-5/3}$) for a limited range of parameters. The shell model of convective turbulence yields Kolmogorov's spectrum. These results are consistent with the energy flux and energy feed due to buoyancy, and are in good agreement with direct numerical simulations of Kumar {\em et al.} [Phys. Rev. E {\bf 90}, 023016 (2014)].
title: Dar voce al silenzio. Ágnes Heller sulla Shoah
Creators: name: Kajon, Irene
Publisher: name: Roma Tre-Press
Year: 2009

description: Ágnes Heller, in un suo contributo scritto in italiano nel 1995, prendendo le mosse dalla frase di Adorno sul diritto di colui che soffre in modo lancinante di esprimere la propria sofferenza (la quale corregge la vecchia affermazione sull'impossibilità di scrivere poesie dopo Auschwitz), formula in modo molto chiaro ed eloquente il problema di una comunicazione della sofferenza che renda giustizia alle vittime riconoscendole come soggetti dotati di diritti.

description: B@belonline vol. 7 Ebraismo Etica Politica. Per Ágnes Heller
title: La radice utopica nell’idea di filosofia di Ágnes Heller
Creators: name: Ghersi, Emma
Publisher: name: Roma Tre-Press
Year: 2009

description: La radicalità dell'idea di filosofia di Ágnes Heller – al di là della stessa esperienza del marxismo – va considerata e proiettata in un orrizzonte più ampio di temi e suggestioni già presenti nella riflessione di alcuni pensatori centrali del Novecento. Riflettendo infatti sull'origine del filosofare e su «che cosa ci fa pensare», la Heller rimette in discussione il problema della funzione della filosofia e del compito del filosofo nel nostro tempo.

description: B@belonline vol. 7 Ebraismo Etica Politica. Per Ágnes Heller
The afterglow of a relativistic shock breakout and low-luminosity GRBs
Creators: name: Duran, Rodolfo Barniol
name: Nakar, Ehud
name: Piran, Tsvi
name: Sari, Re'em
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The prompt emission of low-luminosity gamma-ray bursts (llGRBs) indicates that these events originate from a relativistic shock breakout. In this case we can estimate, based on the properties of the prompt emission, the energy distribution of the ejecta. We develop a general formalism to estimate the afterglow produced by synchrotron emission from the forward shock resulting from the interaction of this ejecta with the circum-burst matter. We assess whether this emission can produce the observed radio and X-ray afterglows of the available sample of 4 llGRBs. All 4 radio afterglows can be explained within this model, providing further support for shock breakouts being the origin of llGRBs. We find that in one of the llGRBs (GRB 031203) the predicted X-ray emission, using the same parameters that fit the radio, can explain the observed one. In another one (GRB 980425) the observed X-rays can be explained if we allow for a slight modification of the simplest model. For the last two cases (GRBs 060218 and 100316D), we find that, as is the case for previous attempts to model these afterglows, the simplest model that fits the radio emission underpredicts the observed X-ray afterglows. Using general arguments, we show that the most natural location of the X-ray source is, like the radio source, within the ejecta-external medium interaction layer but that emission is due to a different population of electrons or to a different emission process.
description: 12 pages, 4 figures; expanded Section 5; MNRAS accepted
"Amato Gargano", la tutela della casa comune tra cura della bellezza e del Creato, tra scienza ed ecologia.Gianfranco Pazienza, PhD - Legambiente Circolo “lo Sperone”
Creators: name: Pazienza, PhD, Gianfranco Eugenio
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 410405
subject: Environmental rehabilitation and restoration
classificationCode: 410406
subject: Natural resource management

description: RELAZIONE PER LA CONFERENZA DEI LYONS CLUB DI SAN GIOVANNI ROTONDO - Chiostro “Francesco Paolo Fiorentino” Palazzo di Città - 24 ottobre 2023"Amato Gargano": Sono queste le parole semplici e profonde usate frequentemente da Padre Franco Moscone per esortare le nostre coscienze invocate con coraggio per condannare la crudeltà e la ferocia della mafia criminale che insanguina il Gargano; o quando le fiamme devastano i nostri boschi. Questa diventa la traccia per parlare efficacemente di ecologia e di valori etici ed ambientali nel corso della conferenza.Il commento di Padre Franco Moscone dopo la lettura del testo, rilasciato all'autore è stato questo: (...) Grazie, Dottore, non ha per nulla “abusato delle parole Amato Gargano” e mi onora con la sua citazione! Da “cittadini” del Gargano impegniamoci nel difenderne e curare la bellezza. Con stima,+ p. Franco
title: L’etica di Ágnes Heller e la scommessa dell’uomo buono
Creators: name: Costanzo, Giovanna
Publisher: name: Roma Tre-Press
Year: 2009

description: Dalla lettura della Trilogia della città di K, uno dei romanzi più belli di Agota Kristof, emergono dei quesiti di natura etica di grande rilevanza. Di contro all'indifferentismo etico che toglie valore alla scelta e che distrugge ogni umano compatire, è possibile dare ancora delle chances all'uomo? È inoltre possibile credere, a dispetto dell'individualismo imperante e di ogni analisi scettica sul conformismo della nostra epoca, che la scelta di essere autenticamente se stessi e al contempo di condurre una "vita buona" sia non solo proponibile ma anche attuale? Queste sono le problematiche che ritroviamo nel pensiero filosofico di Ágnes Heller e all'interno del dibattito etico contemporaneo.

description: B@belonline vol. 7 Ebraismo Etica Politica. Per Ágnes Heller
Webinars sobre Buenas Prácticas en los Procesos Editoriales de Revistas Científicas para LILACS (2020) - Sesión II - Tema: Definiendo y consolidando el alcance de la revista
Creators: name: BIREME/OPS/OMS
name: Trzeniak, Prof. Dr. Piotr
name: Suga, Sueli Mitiko Yano
Publisher: name: Zenodo
Year: 2020
Subjects: Buenas prácticas
Ciencia aberta
Lilacs
Editores Lilacs
Revista Lilacs
Buenas Prácticas Editoriales

description: (02|09) 𝗗𝗘𝗙𝗜𝗡𝗜𝗘𝗡𝗗𝗢 𝗬 𝗖𝗢𝗡𝗦𝗢𝗟𝗜𝗗𝗔𝗡𝗗𝗢 𝗘𝗟 𝗔𝗟𝗖𝗔𝗡𝗖𝗘 𝗗𝗘 𝗟𝗔 𝗥𝗘𝗩𝗜𝗦𝗧𝗔 - Buenas Prácticas Editoriales LILACS 2020 • Sesión 02 | 15 de abril de 2020 • Tema: Definiendo y consolidando el alcance de la revista • Panelista: Prof. Dr. Piotr Trzeniak 00:00 - Introducción (Sueli Suga) 02:25 - Contenido (Piotr Trzeniak) 58:45 - Preguntas Más informaciones: https://lilacs.bvsalud.org/es/buenas-practicas-en-los-procesos-editoriales-de-revistas-cientificas-para-lilacs-2020/
The $\mathbb{Z}_2$-genus of Kuratowski minors
Creators: name: Fulek, Radoslav
name: Kynčl, Jan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 57M15, 05C83, 68R10, 15A03

description: A drawing of a graph on a surface is independently even if every pair of nonadjacent edges in the drawing crosses an even number of times. The $\mathbb{Z}_2$-genus of a graph $G$ is the minimum $g$ such that $G$ has an independently even drawing on the orientable surface of genus $g$. An unpublished result by Robertson and Seymour implies that for every $t$, every graph of sufficiently large genus contains as a minor a projective $t\times t$ grid or one of the following so-called $t$-Kuratowski graphs: $K_{3,t}$, or $t$ copies of $K_5$ or $K_{3,3}$ sharing at most two common vertices. We show that the $\mathbb{Z}_2$-genus of graphs in these families is unbounded in $t$; in fact, equal to their genus. Together, this implies that the genus of a graph is bounded from above by a function of its $\mathbb{Z}_2$-genus, solving a problem posed by Schaefer and Štefankovič, and giving an approximate version of the Hanani-Tutte theorem on orientable surfaces. We also obtain an analogous result for Euler genus and Euler $\mathbb{Z}_2$-genus of graphs.
description: 25 pages, 10 figures; minor revision
Peripheral and Power Management in Batteryless, Energy-Harvesting Systems
Creators: name: Ruppel, Emily
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: subject: Computer Engineering
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Batteryless, energy-harvesting devices enable deeply embedded sensing and computing deployments without the size, weight, or maintenance constraints of batteries. These devices harvest energy into a small capacitor bank to support short bursts of execution at a time, with power failures in between. Peripheral sensors and radios are essential to batteryless device deployments; they allow a device to sense and report information about its surroundings. However, peripherals trigger concurrent accesses to memory and account for a large percentage of the total device energy budget. The challenge for programmers is a tight coupling emerges between device hardware characteristics and application peformance. A software developer needs to have an understanding of both to write programs that behave as expected. This thesis reduces the burden of integrating peripherals into batteryless applications by managing the shared state between peripherals and the primary microcontroller. We first address the problem of shared memory between peripheral triggered interrupts and a program’s main loop by defining a programming model that prevents concurrency control violations due to power failures. Peripheral operations also affect the state of the system by changing the total operating power, e.g. by turning a sensor on or off. We demonstrate that peripheral mismanagement leads to a new class of energy bugs that cause hard-stop failures and waste energy in batteryless systems. To correct these bugs, we model changes in peripheral power over a program’s execution. However, peripheral power does not fully capture the hardware state of the device. A device’s power system characteristics also determine when it is safe to access a peripheral. Using a lightweight model of the power system, we correct existing scheduling algorithms for batteryless devices to accommodate high-current peripherals on volume-constrained systems. Finally, we apply the lessons learned throughout this thesis to develop the failure-aware hardware and software support for a miniature batteryless satellite. The ease with which we integrate failure-agnostic peripheral subsystems demonstrates the value of power and peripheral management in batteryless devices.
Weakly gravitating isotropic waveguides
Creators: name: Beig, Robert
name: Chruściel, Piotr T.
name: Hilweg, Christopher
name: Kornreich, Philipp
name: Walther, Philip
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyse the effect of post-Newtonian gravitational fields on propagation of light in a cylindrical waveguide in both a straight configuration and a spool configuration. We derive an equation for the dependence of the wave vector upon the vertical location of the waveguide. It is shown that the gravitational field produces a small shift in the wave vector, which we determine, while the spooling creates additional modes which could perhaps be measurable in future accurate experiments.
description: 35 pages, 1 figure
Model selection and hypothesis testing for large-scale network models with overlapping groups
Creators: name: Peixoto, Tiago P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Social and Information Networks (cs.SI)
subject: Computational Physics (physics.comp-ph)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The effort to understand network systems in increasing detail has resulted in a diversity of methods designed to extract their large-scale structure from data. Unfortunately, many of these methods yield diverging descriptions of the same network, making both the comparison and understanding of their results a difficult challenge. A possible solution to this outstanding issue is to shift the focus away from ad hoc methods and move towards more principled approaches based on statistical inference of generative models. As a result, we face instead the more well-defined task of selecting between competing generative processes, which can be done under a unified probabilistic framework. Here, we consider the comparison between a variety of generative models including features such as degree correction, where nodes with arbitrary degrees can belong to the same group, and community overlap, where nodes are allowed to belong to more than one group. Because such model variants possess an increasing number of parameters, they become prone to overfitting. In this work, we present a method of model selection based on the minimum description length criterion and posterior odds ratios that is capable of fully accounting for the increased degrees of freedom of the larger models, and selects the best one according to the statistical evidence available in the data. In applying this method to many empirical unweighted networks from different fields, we observe that community overlap is very often not supported by statistical evidence and is selected as a better model only for a minority of them. On the other hand, we find that degree correction tends to be almost universally favored by the available data, implying that intrinsic node proprieties (as opposed to group properties) are often an essential ingredient of network formation.
description: 20 pages,7 figures, 1 table
Object Detection Through Exploration With A Foveated Visual Field
Creators: name: Akbas, Emre
name: Eckstein, Miguel P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We present a foveated object detector (FOD) as a biologically-inspired alternative to the sliding window (SW) approach which is the dominant method of search in computer vision object detection. Similar to the human visual system, the FOD has higher resolution at the fovea and lower resolution at the visual periphery. Consequently, more computational resources are allocated at the fovea and relatively fewer at the periphery. The FOD processes the entire scene, uses retino-specific object detection classifiers to guide eye movements, aligns its fovea with regions of interest in the input image and integrates observations across multiple fixations. Our approach combines modern object detectors from computer vision with a recent model of peripheral pooling regions found at the V1 layer of the human visual system. We assessed various eye movement strategies on the PASCAL VOC 2007 dataset and show that the FOD performs on par with the SW detector while bringing significant computational cost savings.
description: An extended version of this manuscript was published in PLOS Computational Biology (October 2017) at https://doi.org/10.1371/journal.pcbi.1005743
Quantifying spatio-temporal boundary condition uncertainty for the North American deglaciation
Creators: name: Salter, James M.
name: Williamson, Daniel B.
name: Gregoire, Lauren J.
name: Edwards, Tamsin L.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Ice sheet models are used to study the deglaciation of North America at the end of the last ice age (past 21,000 years), so that we might understand whether and how existing ice sheets may reduce or disappear under climate change. Though ice sheet models have a few parameters controlling physical behaviour of the ice mass, they also require boundary conditions for climate (spatio-temporal fields of temperature and precipitation, typically on regular grids and at monthly intervals). The behaviour of the ice sheet is highly sensitive to these fields, and there is relatively little data from geological records to constrain them as the land was covered with ice. We develop a methodology for generating a range of plausible boundary conditions, using a low-dimensional basis representation of the spatio-temporal input. We derive this basis by combining key patterns, extracted from a small ensemble of climate model simulations of the deglaciation, with sparse spatio-temporal observations. By jointly varying the ice sheet parameters and basis vector coefficients, we run ensembles of the Glimmer ice sheet model that simultaneously explore both climate and ice sheet model uncertainties. We use these to calibrate the ice sheet physics and boundary conditions for Glimmer, by ruling out regions of the joint coefficient and parameter space via history matching. We use binary ice/no ice observations from reconstructions of past ice sheet margin position to constrain this space by introducing a novel metric for history matching to binary data.
title: Philosophy as a Literary Genre Exemplified Mainly on Heidegger
Creators: name: Heller, Ágnes
Publisher: name: Roma Tre-Press
Year: 2009

description: Sollecitata dalla celebre affermazione di Marx, contenuta nella prima parte della sua undicesima tesi su Feuerbach, secondo cui compito della filosofia è di «interpretare il mondo», Heller definisce la filosofia «genere letterario», per sottolineare non solo la straordinaria continuità con la tradizione, ma anche il suo fine e il suo alto valore. Solo se intesa, infatti, come «genere letterario» è possibile percepire la filosofia come quella produzione dello spirito che, come un patrimonio scritturistico, oltre che teorico ed ideale, accompagna l'umanità e ne affina la sua «comprensione del mondo». Ogni volta che il singolo filosofo elabora il suo pensiero, in realtà, non pensa mai al singolare, ma rifacendosi ad una tradizione pre-esistente, impara a con-filosofare con i suoi predecessori, a partire da alcune domande lasciate insolute o trovate insoddisfacenti, o semplicemnte amando indagare termini cari ad una tradizione speculativa. Ciò viene esemplificando da Heller attraverso la filosofia di Heidegger e la sua felice intuizione del Dasein con cui tenta di ripensare soggettività e oggettività. Mantenere viva questa attività speculativa ed interrogante nella modernità, significa per Heller conservare e preservare quel «luogo ideale» che salverà ogni uomo dalla mera fatticità e dai pesi di una schiacciante «contingenza».

description: B@belonline vol. 7 Ebraismo Etica Politica. Per Ágnes Heller
"Amato Gargano", la tutela della casa comune tra cura della bellezza e del Creato, tra scienza ed ecologia.Gianfranco Pazienza, PhD - Legambiente Circolo “lo Sperone”
Creators: name: Pazienza, PhD, Gianfranco Eugenio
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 410405
subject: Environmental rehabilitation and restoration
classificationCode: 410406
subject: Natural resource management

description: RELAZIONE PER LA CONFERENZA DEI LYONS CLUB DI SAN GIOVANNI ROTONDO - Chiostro “Francesco Paolo Fiorentino” Palazzo di Città - 24 ottobre 2023"Amato Gargano": Sono queste le parole semplici e profonde usate frequentemente da Padre Franco Moscone per esortare le nostre coscienze invocate con coraggio per condannare la crudeltà e la ferocia della mafia criminale che insanguina il Gargano; o quando le fiamme devastano i nostri boschi. Questa diventa la traccia per parlare efficacemente di ecologia e di valori etici ed ambientali nel corso della conferenza.
European Identity through Free Movement Law? The Interactions between Union Citizenship, Free Movement of Persons, and EU Values - V Convegno Annuale AISDUE - Padova 2023
Creators: name: RISTUCCIA, FULVIA
Publisher: name: Zenodo
Year: 2023

description: Fulvia Ristuccia, Maastricht University, European identity through free movement law? The interactions between Union citizenship, free movement of persons, and EU values
V Convegno Annuale AISDUE - Padova 2 e 3 Novembre 2023
Il Diritto dell'Unione europea nei rapporti tra ordinamenti: tra collaborazione, integrazione e identità
Sessione 3: Cittadinanza dell'Unione, tutela degli status personali e identità costituzionali nazionali: quale equilibrio?
Intervento selezionato tramite call for papers - Working Paper
Conference Editor: Bernardo Cortese, Università degli Studi di Padova - DiPIC
*
Comitato scientifico AISDUE: Antonio Tizzano, Patrizia De Pasquale, Pietro Manzini, Paola Mori, Francesco Rossi Dal Pozzo, Lorenzo Schiano di Pepe, Fabio Spitaleri