cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Diffusion and Precipitation Processes in Iron-Based Silica Gardens
Creators: name: Glaab, Fabian
name: Rieder, Julian
name: Garcia-Ruiz, Juan Manuel
name: Kunz, Werner
name: Kellermeier, Matthias
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: diffusion pptn iron silica
subject: 540 Chemie

description: Silica gardens are tubular structures that form along the interface of multivalent metal salts and alk. solns. of sodium silicate, driven by a complex interplay of osmotic and buoyant forces together with chem. reaction. They display peculiar plant-​like morphologies and thus can be considered as one of the few examples for the spontaneous biomimetic self-​ordering of purely inorg. materials. Recently, we could show that silica gardens moreover are highly dynamic systems that remain far from equil. for considerable periods of time long after macroscopic growth is completed. Due to initial compartmentalization, drastic concn. gradients were found to exist across the tube walls, which give rise to noticeable electrochem. potential differences and decay only slowly in a series of coupled diffusion and pptn. processes. The effect of the nature of the metal cations on the dynamic behavior of the system has been studied. The authors have grown single macroscopic silica garden tubes by controlled addn. of sodium silicate sol to pellets of iron(II) and iron(III) chloride. In the following, the concns. of ionic species were measured as a function of time on both sides of the formed membranes, while electrochem. potentials and pH were monitored online by immersing the corresponding sensors into the two sepd. soln. reservoirs. At the end of the expts., the solid tube material was furthermore characterized with respect to compn. and microstructure by a combination of ex situ techniques. The collected data are compared to the previously reported case of cobalt-​based silica gardens and used to shed light on ion diffusion through the inorg. membranes as well as progressive mineralization at both surfaces of the tube walls. These results reveal important differences in the dynamics of the three studied systems, which can be explained based on the acidity of the metal cations and the porosity of the membranes, leading to substantially dissimilar time-​dependent soln. chem. as well as distinct final mineral structures. The insight gained in this work may help to better understand the diffusion properties and pptn. patterns in tubular iron (hydr)​oxide​/silicate structures obsd. in geol. environments and during steel corrosion.
TT 31 OF KHONSU AT SHEIK ABD EL-GURNAH (THEBES): RESEARCHES INTO CONSTRUCTED LANDSCAPES
Creators: name: Ugliano, Federica
Publisher: name: ACME
Year: 2014

description: The Theban tomb (TT) 31 of Khonsu, First Prophet of Menkheperre, is an ideal casestudy to understand the perception of natural and constructed landscapes, throughout the analysis of their different iconographies. Starting from the description of the decorative programme of Khonsu’s tomb, it could be possible to identify elements of continuity and differences between the depictions of the different sacred structures that can be appreciated also within the Theban and Amarnian tombs of the nobles during the XVIII and XIX Dynasty. The use of specific themes and iconographies might correspond to peculiar conceptions of the most sacred space, the temple.
description: ACME, Vol 66, No 1-2 (2013)
Welche Chancen bietet die Immunonkologie für ein indikationsübergreifendes Langzeitüberleben?
Creators: name: Bergmann, Lothar
name: Brugger, Wolfram
name: Herr, Wolfgang
name: Mackensen, Andreas
name: Multhoff, Gabriele
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 610 Medizin

description: Tumore nutzen verschiedene Escape-Mechanismen, um das körpereigene Immunsystem zu überlisten und sich gegenüber der Tumor-Immunabwehr durchzusetzen: Die Erkenntnis, dass sie immunregulative Moleküle wie z.B. CTLA-4 (Cytotoxic T Lymphocyte Antigen 4) oder PD-1 (programmed cell death 1) sowie deren Liganden PD-L1/PD-L2 instrumentalisieren können, um der Immunüberwachung zu entkommen (immune escape), hat einen vollständig neuen Therapiezugang für die Onkologie eröffnet...
On the computation of star products
Creators: name: Bratchikov, A. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The problem of finding a generic star product on R^n is reduced to the computation of a skew-symmetric biderivation.
description: 8 pages; v3: title changed, minor corrections, accepted for publication in Int.J.Geom.Meth.Mod.Phys
Modeling the spatial dynamics of income in cities
Creators: name: Verbavatz, Vincent
name: Barthelemy, Marc
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Urban inequality is a major challenge for cities in the 21st century. This inequality is reflected in the spatial income structure of cities which evolves in time through various processes. Gentrification is a well-known illustration of these dynamics in which the population of a low income area changes as wealthier residents arrive and old-settled residents are expelled. Less understood but very important is the reverse process of gentrification through which areas of cities get impoverished. Gentrification has been widely studied among social sciences, especially in case studies, but there have been fewer quantitative analyses of this phenomenon, and more generally about the spatial dynamics of income in cities. Here, we first propose a quantitative analysis of these income dynamics in cities based on household incomes in 45 American and 9 French Functional Urban Areas (FUA). We found that an important ingredient that determines the evolution of the income level of an area is the income level of its immediate neighboring areas. This empirical finding leads to the idea that these dynamics can be modeled by the voter model of statistical physics. We show that such a model constitutes an interesting tool for both describing and predicting evolution scenarios of urban areas with a very limited number of parameters (two for the US and one for France). We illustrate our results by computing the probability that areas will change their income status in the case of Boston and Paris at the horizon of 2030.
description: 12 pages, 5 figures
Performance Analysis and Design of Two Edge Type LDPC Codes for the BEC Wiretap Channel
Creators: name: Rathi, Vishwambhar
name: Andersson, Mattias
name: Thobaben, Ragnar
name: Kliewer, Joerg
name: Skoglund, Mikael
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider transmission over a wiretap channel where both the main channel and the wiretapper's channel are Binary Erasure Channels (BEC). We propose a code construction method using two edge type LDPC codes based on the coset encoding scheme. Using a standard LDPC ensemble with a given threshold over the BEC, we give a construction for a two edge type LDPC ensemble with the same threshold. If the given standard LDPC ensemble has degree two variable nodes, our construction gives rise to degree one variable nodes in the code used over the main channel. This results in zero threshold over the main channel. In order to circumvent this problem, we numerically optimize the degree distribution of the two edge type LDPC ensemble. We find that the resulting ensembles are able to perform close to the boundary of the rate-equivocation region of the wiretap channel. There are two performance criteria for a coding scheme used over a wiretap channel: reliability and secrecy. The reliability measure corresponds to the probability of decoding error for the intended receiver. This can be easily measured using density evolution recursion. However, it is more challenging to characterize secrecy, corresponding to the equivocation of the message for the wiretapper. Méasson, Montanari, and Urbanke have shown how the equivocation can be measured for a broad range of standard LDPC ensembles for transmission over the BEC under the point-to-point setup. By generalizing the method of Méasson, Montanari, and Urbanke to two edge type LDPC ensembles, we show how the equivocation for the wiretapper can be computed. We find that relatively simple constructions give very good secrecy performance and are close to the secrecy capacity. However finding explicit sequences of two edge type LDPC ensembles which achieve secrecy capacity is a more difficult problem. We pose it as an interesting open problem.
description: submitted to IEEE Transactions on Information Theory. Updated version
Behaviour of solutions to the nonlinear Schrödinger equation in the presence of a resonance
Creators: name: Coles, Matthew Preston
Publisher: name: University of British Columbia
Year: 2017

description: The present thesis is split in two parts. The first deals with the focusing Nonlinear Schrödinger Equation in one dimension with pure-power nonlinearity near cubic. We consider the spectrum of the linearized operator about the soliton solution. When the nonlinearity is exactly cubic, the linearized operator has resonances at the edges of the essential spectrum. We establish the degenerate bifurcation of these resonances to eigenvalues as the nonlinearity deviates from cubic. The leading-order expression for these eigenvalues is consistent with previous numerical computations. The second considers the perturbed energy critical focusing Nonlinear Schrödinger Equation in three dimensions. We construct solitary wave solutions for focusing subcritical perturbations as well as defocusing supercritical perturbations. The construction relies on the resolvent expansion, which is singular due to the presence of a resonance. Specializing to pure power focusing subcritical perturbations we demonstrate, via variational arguments, and for a certain range of powers, the existence of a ground state soliton, which is then shown to be the previously constructed solution. Finally, we present a dynamical theorem which characterizes the fate of radially-symmetric solutions whose initial data are below the action of the ground state. Such solutions will either scatter or blow-up in finite time depending on the sign of a certain function of their initial data.
IL LAGO DEI CIGNI DI DELO: DAL «THRENOS» AL PEANA
Creators: name: Castrucci, Greta
Publisher: name: ACME
Year: 2014

description: Dalla tragedia di Euripide alla filosofia platonica fino alla dotta poesia callimachea, si riscontra una interessante associazione tra la menzione di Delo e dei suoi cigni e il passaggio dall’espressione trenodica del dolore a quella liberatoria e guaritrice del peana. L’articolo, partendo da una breve incursione nell’epica omerica per rilevare le più antiche attestazioni di una presenza congiunta del threnos e del peana, e nella lirica e innografia arcaiche per recuperare le origini della connotazione del cigno come uccello apollineo della poesia, si concentra su alcuni passi euripidei (Eracle, Ione e Ifigenia in Tauride), platonici (Fedone) e callimachei (Inno a Delo e Inno ad Apollo) in cui il lago dei cigni di Delo viene menzionato, cercando di comprenderne il valore e metterne in luce gli elementi di continuità.
description: ACME, Vol 66, No 1-2 (2013)
Open Life Science Proposal for the next phase of funding and support from the Chan Zuckerberg Initiative: 2021 project report
Creators: name: Open Life Science Team
Publisher: name: Zenodo
Year: 2022

description: Sharing the proposal, programme overview, buget narrative, budget overview and supplementary materials submitted for a successful proposal by Open Life Science (OLS) funded by the Chan Zuckerberg Initiative. This grant will provide OLS with a truly valuable opportunity to improve sustainability for the organisation and community, and allow enough time to focus on planning for the longer term.
From EMC- and Cronin-effects to signals of quark-gluon plasma
Creators: name: Zhu, Wei
name: Ruan, Jianhong
name: Hou, Fengyao
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The EMC- and Cronin-effects are explained by a unitarized evolution equation, where the shadowing and antishadowing corrections are dynamically produced by gluon fusions. For this sake, an alternative form of the GLR-MQ-ZRS equation is derived. The resulting integrated and unintegrated gluon distributions in proton and nuclei are used to analyze the contributions of the initial parton distributions to the nuclear suppression factor in heavy ion collisions. A simulation of the fractional energy loss is extracted from the RHIC and LHC data, where the contributions of the nuclear shadowing and antishadowing effects are considered. We find a rapid crossover from week energy loss to strong energy loss at a universal critical energy of gluon jet $E_c\sim 10 GeV$.
description: 35 pages, 13 figures, to be published in Int. J. Mod. Phys. E
CONOSCENZA ED ESPERIENZA. PER UNA LETTURA “RELAZIONALISTA” DELLO SPIRITO DELLA FILOSOFIA KANTIANA ALLA LUCE DELLO SCHEMATISMO TRASCENDENTALE
Creators: name: Scaglia, Lara
Publisher: name: ACME
Year: 2014

description: L’articolo intende valutare in che misura la dottrina kantiana dello schematismo possa contribuire a chiarire gli intenti del Criticismo, con particolare attenzione alla relazione tra conoscenza ed esperienza.
description: ACME, Vol 66, No 1-2 (2013)
UN SECOLO NEL SEGNO DI NAPOLEONE: I «CENTO ANNI» DI GIUSEPPE ROVANI
Creators: name: Gallarini, Luca
Publisher: name: ACME
Year: 2014

description: Cento anni, il più ambizioso romanzo di Giuseppe Rovani (1818-1874), copre un secolo di vita italiana ed europea: il grande affresco prende le mosse dai primi fervori libertari e illuministi, abbraccia la stagione napoleonica e si conclude sulle note tragico-sublimi della caduta della Repubblica di Venezia (1849). A lungo considerato uno zibaldone di aneddoti pettegoli e curiosità erudite, il capolavoro di Rovani poggia in realtà su una struttura narrativa ben precisa: le vicende dei personaggi delineano un percorso di liberazione dai vincoli gentilizi che tocca l’apice nelle conquiste democratiche della rivoluzione di Napoleone, e che lascia intravedere una classe borghese definita dai criteri di merito del talento artistico. Il risultato è una ricognizione nostalgica degli anni a cavallo tra Sette e Ottocento: un periodo storico in cui gli artisti si muovono da primattori, e l’esempio del soldato che diventa imperatore è garanzia di mobilità sociale.
description: ACME, Vol 66, No 1-2 (2013)
Convergence of a linearly regularized nonlinear wave equation to the $p$-system
Creators: name: Erbay, Hüsnü Ata
name: Erbay, Saadet
name: Erkip, Albert Kohen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q74, 74B20, 74H20, 74J30

description: We consider a second-order nonlinear wave equation with a linear convolution term. When the convolution operator is taken as the identity operator, our equation reduces to the classical elasticity equation which can be written as a $p$-system of first-order differential equations. We first establish the local well-posedness of the Cauchy problem. We then investigate the behavior of solutions to the Cauchy problem in the limit as the kernel function of the convolution integral approaches to the Dirac delta function, that is, in the vanishing dispersion limit. We consider two different types of the vanishing dispersion limit behaviors for the convolution operator depending on the form of the kernel function. In both cases, we show that the solutions converge strongly to the corresponding solutions of the classical elasticity equation.
description: 12 pages
Cutaneous Squamous Cell Carcinoma with Perineural Invasion: Report on Eight Cases and Review of the Literature
Creators: name: Verburg, Maurice
name: Lang, Martin
name: Mühlstädt, Michael
name: Klein, Annette
name: Schauber, Jürger
name: Sattler, Elke C.
name: Kunte, Christian
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: Squamous cell carcinoma, Perineural invasion, RadiotherapyMohs surgery, Skip lesions
subject: 610 Medizin

description: Background: Perineural invasion (PNI) in cutaneous squamous cell carcinoma (SCC) is considered to be a negative prognostic factor. A lot of uncertainty remains regarding the classification, diagnosis, treatment and prognosis of SCC with PNI. Objective: To describe typical courses of SCC with PNI and associated findings in order to suggest an optimized diagnostic and therapeutic approach. Methods: We present eight cases of SCC with PNI, considering patient and tumor characteristics, histology, treatment and clinical course regarding local recurrence and metastasization. Results: SCC patients with PNI have a higher rate of local recurrences and greater risk for metastasization than SCC patients without PNI. Age ranged from 68 to 77 years, 6 patients were male and 2 female, with all tumors localized on the head. Three patients had chronic lymphocytic leukemia. Conclusion: Based on the data of this series and the current literature, we make suggestions for better diagnostic and therapeutic management.
PER ALDO NOSEDA: IL CRITICO MUSICALE
Creators: name: Fiaccadori, Chiara
Publisher: name: ACME
Year: 2014

description: Il presente articolo è un tentativo di fornire la lista completa degli scritti di Aldo Noseda (Milano, 1853-Stresa, 1916) come critico musicale. Fu un erudito conoscitore d’arte e appassionato collezionista, ma la quasi totalità dei suoi scritti sono dedicati alla scena musicale italiana. Prese parte all’infiammato dibattito a proposito della musica strumentale divenendo membro della Società del Quartetto e fondando la Società orchestrale della Scala a Milano. Dal 1876 al 1894, sotto lo pseudonimo de Il Misovulgo fu tra gli editorialisti militanti di importanti periodici come «La Gazzetta musicale di Milano», il «Corriere della Sera» e «Il Caffè», contribuendovi con una serie di appassionate recensioni dei contemporanei eventi musicali milanesi.
description: ACME, Vol 66, No 1-2 (2013)
Time Evolution of Temperature and Entropy of Various Collapsing Domain Walls
Creators: name: Halstead, Evan
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the time evolution of the temperature and entropy of gravitationally collapsing domain walls as seen by an asymptotic observer. In particular, we seek to understand how topology and the addition of a cosmological constant affect the gravitational collapse. Previous work has shown that the entropy of a spherically symmetric collapsing domain approaches a constant. In this paper, we reproduce these results, using both a fully quantum and a semi-classical approach, then we repeat the process for a de Sitter Schwarzschild domain wall (spherical with cosmological constant) and a (3+1) BTZ domain wall (cylindrical). We do this by coupling a scalar field to the background of the domain wall and analyzing the spectrum of radiation as a function of time. We find that the spectrum is quasi-thermal, with the degree of thermality increasing as the domain wall approaches the horizon. The thermal distribution allows for the determination of the temperature as a function of time, and we find that the late time temperature is very close to the Hawking temperature and that it also exhibits the proper scaling with the mass. From the temperature we find the entropy. Since the collapsing domain wall is what forms a black hole, we can compare the results to those of the standard entropy-area relation. We find that the entropy does in fact approach a constant that is close to the Hawking entropy. However, both the de Sitter Schwarzschild domain wall and the (3+1) BTZ domain wall show periods of decreasing entropy, which suggests that spontaneous collapse may be prevented.
description: This paper is a merging of two previously submitted papers: Time Evolution of Temperature and Entropy of a Gravitationally Collapsing Cylinder [arXiv:1106.2278]; Time Evolution of Temperature and Entropy of a Gravitationally Collapsing de Sitter Schwarzschild Domain Wall
title: "Statua di fanciullo togato", arte romana, inv. CLXXXV (ITA/EN)
title: Scheda catalogo digitale Borghese
titleType: AlternativeTitle
Creators: name: Clementi, Jessica
name: Galleria Borghese
Publisher: name: Galleria Borghese
Year: 2024

description: Pubblicazione delle schede delle opere conservate nel museo ed estratte dal catalogo digitale di

Galleria Borghese, nelle due versioni esistenti online, in italiano e inglese.

Collegamento al catalogo digitale:

ITA: https://www.collezionegalleriaborghese.it/

EN: https://www.collezionegalleriaborghese.it/en
Developments of Corey-Chaykovsky in organic reactions and total synthesis of natural products
Creators: name: Mommahed Heravi, Majid
name: Asadi, Shima
name: Nazari, Niousha
name: Lashkariani, BoshraMalekzadh
Publisher: name: figshare
Year: 2022
Subjects: subject: 30302 Nanochemistry and Supramolecular Chemistry
subject: FOS: Chemical sciences
subject: 30701 Quantum Chemistry
subject: 39904 Organometallic Chemistry
subject: Organic Chemistry
subject: 30599 Organic Chemistry not elsewhere classified
subject: 30205 Non-metal Chemistry
subject: Nuclear Chemistry
subject: 30504 Organic Green Chemistry
subject: 30502 Natural Products Chemistry
subject: 30303 Optical Properties of Materials

description: The reactions of sulfur ylides with carbonyl, olefin or imine compounds named as the Corey-Chaykovsky, provide oxiranes, cyclopropane or aziridine, respectively. In this report, we try to introduce this important name reaction and highlight a comprehensive overview on the applications of this useful reaction in synthetic organic chemistry and total synthesis of natural products. Dedicated to Professor Mohammad Reza Saidi, on the occasion of his honorable and decent retirement.
Subdiffusion in the Presence of Reactive Boundaries: A Generalized Feynman-Kac Approach
Creators: name: Kay, Toby
name: Giuggioli, Luca
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We derive, through subordination techniques, a generalized Feynman-Kac equation in the form of a time fractional Schrodinger equation. We relate such equation to a functional which we name the subordinated local time. We demonstrate through a stochastic treatment how this generalized Feynman-Kac equation describes subdiffusive processes with reactions. In this interpretation, the subordinated local time represents the number of times a specific spatial point is reached, with the amount of time spent there being immaterial. This distinction provides a practical advance due to the potential long waiting time nature of subdiffusive processes. The subordinated local time is used to formulate a probabilistic understanding of subdiffusion with reactions, leading to the well known radiation boundary condition. We demonstrate the equivalence between the generalized Feynman-Kac equation with a reflecting boundary and the fractional diffusion equation with a radiation boundary. We solve the former and find the first-reaction probability density in analytic form in the time domain, in terms of the Wright function. We are also able to find the survival probability and subordinated local time density analytically. These results are validated by stochastic simulations that use the subordinated local time description of subdiffusion in the presence of reactions.
DALL’«ARTICOLO EPR» AGLI ESPERIMENTI DI ALAIN ASPECT: IL LUNGO CAMMINO DEL PROBLEMA DELLA NONLOCALITÀ IN MECCANICA QUANTISTICA
Creators: name: Matarese, Vera
Publisher: name: ACME
Year: 2014

description: Quando, nel 1935, venne pubblicato il famoso articolo chiamato poi “EPR Paper” per le iniziali dei suoi autori - Einstein, Podolsky, Rosen -, la comunità scientifica dovette confrontarsi non solo con le manifeste provocazioni che il suo argomento voleva mostrare, ma anche con latenti problemi che sarebbero sbocciati più avanti in tutti i loro stridenti contrasti. L’incompletezza della meccanica quantistica, che l’“articolo EPR” si proponeva di dimostrare, poggiava infatti su un principio molto problematico, quello della località, che sarebbe esploso nell’esperimento prima concettuale di Bohm e poi sperimentale di Aspect. Ciò che questo articolo vuole delineare è lo sviluppo del problema della nonlocalità, dai suoi albori fino alla prova della sua effettiva esistenza nel mondo quantistico, dove, come ben ha dimostrato Bell, nulla possono fare le variabili nascoste per dissolvere la realtà nonlocale di alcuni fenomeni.
description: ACME, Vol 66, No 1-2 (2013)
11β-Hydroxysteroid Dehydrogenase Enzymes Modulate Effects of Glucocorticoids in Rheumatoid Arthritis Synovial Cells
Creators: name: Schmidt, Martin
name: Straub, Rainer H.
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Rheumatoid arthritis, Glucocorticoid receptor, 11β-Hydroxysteroid dehydrogenases
subject: 610 Medizin

description: The tissue availability of active glucocorticoids (cortisol in humans) depends on their rate of synthesis from cholesterol, downstream metabolism, excretion and interconversion. The latter is mediated by the 11β-hydroxysteroid dehydrogenases (11βHSDs). In this review, we summarize the features of the two isoenzymes, 11βHSD1 and 11βHSD2, and current available experimental data related to 11βHSDs, which are relevant in the context of synovial cells in rheumatoid arthritis (RA). We conclude that due to complex feedback mechanisms inherent to the hypothalamic-pituitary-adrenal axis, currently available transgenic animal models cannot display the full potential otherwise inherent to the techniques. Studies with tissue explants, mixed synovial cell preparations, cell lines derived from synovial cells, and related primary cells or established cell lines indicate that there are relatively clear differences between the two isoenzymes. 11βHSD1 is expressed primarily in fibroblasts and osteoblasts, and may be responsible for fibroblast survival and aid in the resolution of inflammation, but it is also involved in bone damage. 11βHSD2 is expressed primarily in macrophages and lymphocytes, and may be responsible for their survival, suggesting that it is critical in chronic inflammation. The situation in synovial tissue would allow 11βHSD2-expressing cells to tap the energy resources of 11βHSD1-expressing cells. The overall properties of this local glucocorticoid interconversion system might limit therapeutic use of glucocorticoids in RA.
LA DIFFICILE ALTERNANZA DI IMPERFETTO E PASSATO PROSSIMO IN ITALIANO: TEMPO, ASPETTO, AZIONE
Creators: name: Mauroni, Elisabetta
Publisher: name: ACME
Year: 2014

description: L’alternanza d’uso di passato prossimo e imperfetto è uno degli aspetti più complessi e più interessanti del sistema verbale dell’italiano. Entrambi i tempi verbali sono adoperati per esprimere azioni nel passato, secondo due prospettive aspettuali opposte (perfettiva VS imperfettiva), non sempre “intuitivamente” motivabili (anche per un madrelingua), né motivabili con un’unica ragione, bensì attraverso l’interazione di ragioni e parametri differenti e spesso interdipendenti.

Questo lavoro vorrebbe quindi fornire una descrizione il più possibile scientifica e rigorosa sulla questione, attraverso il confronto e l’utilizzo di strumenti specialistici di orizzonti teorici anche differenti. Si prefigge inoltre di verificare l’alternanza dei due tempi  nell’uso sincronico, con minimi richiami contrastivi ad usi diacronici oggi ormai marginali nel sistema verbale italiano, ma che - proprio per questa caratteristica - sono risultati particolarmente significativi per la discussione. Infine, richiamando e rendendo ragione delle interazioni tra Sistema e Processo (per dirla con Hjelmslev), lo sguardo si appunta in modo allargato a mettere in relazione il Sistema e i Testi, cioè l’esperienza del Sistema nei Testi.
description: ACME, Vol 66, No 1-2 (2013)
The Lagrangian description of aperiodic flows: a case study of the Kuroshio Current
Creators: name: Mendoza, Carolina
name: Mancho, Ana M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: This article reviews several recently developed Lagrangian tools and shows how their combined use succeeds in obtaining a detailed description of purely advective transport events in general aperiodic flows. In particular, because of the climate impact of ocean transport processes, we illustrate a 2D application on altimeter data sets over the area of the Kuroshio Current, although the proposed techniques are general and applicable to arbitrary time dependent aperiodic flows. The first challenge for describing transport in aperiodical time dependent flows is obtaining a representation of the phase portrait where the most relevant dynamical features may be identified. This representation is accomplished by using global Lagrangian descriptors that when applied for instance to the altimeter data sets retrieve over the ocean surface a phase portrait where the geometry of interconnected dynamical systems is visible. The phase portrait picture is essential because it evinces which transport routes are acting on the whole flow. Once these routes are roughly recognised it is possible to complete a detailed description by the direct computation of the finite time stable and unstable manifolds of special hyperbolic trajectories that act as organising centres of the flow.
description: 40 pages, 24 figures
Impact of a Glycolic Acid-Containing pH 4 Water-in-Oil Emulsion on Skin pH
Creators: name: Behm, Barbara
name: Kemper, Michael
name: Babilas, Philipp
name: Abels, Christoph
name: Schreml, Stephan
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Skin pH, Diabetics, Glycolic acid emulsion
subject: 610 Medizin

description: The skin pH is crucial for physiological skin functions. A decline in stratum corneum acidity, as observed in aged or diseased skin, may negatively affect physiological skin functions. Therefore, glycolic acid-containing water-in-oil (W/O) emulsions adjusted to pH 4 were investigated regarding their effect on normal or increased skin pH. A pH 4 W/O emulsion was applied on three areas with pathologically increased skin surface pH in diabetics (n = 10). Further, a 28-day half-side trial (n = 30) was performed to test the long-term efficacy and safety of a pH 4 W/O emulsion (n = 30). In summary, the application of a pH 4 W/O emulsion reduced the skin pH in healthy, elderly and diabetic subjects, which may improve epidermal barrier functions.
Languages invariant under more symmetries: overlapping factors versus palindromic richness
Creators: name: Pelantová, Edita
name: Starosta, Štěpán
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 68R15

description: Factor complexity $\mathcal{C}$ and palindromic complexity $\mathcal{P}$ of infinite words with language closed under reversal are known to be related by the inequality $\mathcal{P}(n) + \mathcal{P}(n+1) \leq 2 + \mathcal{C}(n+1)-\mathcal{C}(n)$ for any $n\in \mathbb{N}$\,. Word for which the equality is attained for any $n$ is usually called rich in palindromes. In this article we study words whose languages are invariant under a finite group $G$ of symmetries. For such words we prove a stronger version of the above inequality. We introduce notion of $G$-palindromic richness and give several examples of $G$-rich words, including the Thue-Morse sequence as well.
description: 22 pages, 1 figure
La nécessité de débuter les apprentissages en mobilisation de connaissances dès le début des études universitaires : points de vue d’étudiants et d’étudiantes gradués
Creators: name: Paré-Beauchemin, Rémi
name: Madar, Houssein
name: Dorion, Anne-Sophie
name: Angrand, Rosly
name: Chapdelaine, Alexandra
name: Saucier, Daniel
name: Hernandez-Hernandez, Alberto German
name: Mendoza Herrera, Jose Angel
name: Idrissi, Zahya
Publisher: name: Revue francophone de recherche sur le transfert et l’utilisation des connaissances
Year: 2022

description: À l’été 2021, nous, personnes étudiantes de 2e et 3e cycles, avons eu la chance d’être la première cohorte de la nouvelle école d’été en mobilisation de connaissances (MdC) de l’Université de Sherbrooke. Enrichies par cette expérience, nous nous sommes interrogées sur une question primordiale : quelle place devrait occuper la formation en MdC à l’université? Cet éditorial regroupe ainsi nos réflexions et nous espérons qu’il sera porteur de notre vision : considérer la formation en MdC à l’université comme essentielle pour la société et non plus seulement optionnelle.
description: Revue francophone de recherche sur le transfert et l’utilisation des connaissances , Vol. 6 No 1 (2022)
Discursive equality
Creators: name: Beauvais, Edana
Publisher: name: University of British Columbia
Year: 2017

description: To count as democratic, social systems must empower the inclusion of people affected by collective endeavours to participate in practices that contribute to self-development and self- and collective-rule. As a political practice, talking is important because it is an essential tool for enacting social identities and enabling self-development. Talking is how people think through their preferences, and helps people relate private preferences to those collective opinions and agendas that enable collective rule. However, formal barriers (such as legal restrictions) can entail exclusions that prevent disempowered social group members from participating in, or influencing practices – including talk – that contribute to self-development and self- and collective-rule. Furthermore, even in the absence of formal barriers to social and political participation, the historical legacy of structural inequality can pattern social cognition and contribute to internal exclusions that engender asymmetries in political participation and influence, including asymmetries in discursive participation and influence. I address the empirical question of whether inequality shapes social cognition to engender asymmetries in social group members’ discursive participation and influence in two analyses. In my empirical chapters, I turn my attention from a broader concern with social inequality and narrow my focus to gender inequality. In my first empirical chapter, I use Canada Election Studies (2015) data to show there is an ongoing gender gap in discursive participation. In my second empirical chapter, I use data from an original vignette experiment to show that when women do talk politics, they have less influence than men. Finally, I suggest practices and institutions to help neutralise discursive inequalities, so democratic systems can come closer to the ideal of discursive equality, or equal participation and influence in communicative processes of self-development and self- and collective-rule.
Workload and Quality of Life of Medical Doctors in the Field of Oncology in Germany - a Survey of the Working Group Quality of Life of the AIO for the Study Group of Internal Oncology
Creators: name: Hipp, Matthias
name: Pilz, Lothar
name: Al-Batran, Salah E.
name: Hautmann, Matthias G.
name: Hofheinz, Ralf-Dieter
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Job stress, Job satisfaction, FBAS-questionnaire
subject: 610 Medizin

description: Background: An increasing number of surveys have investigated professional stress and satisfaction among oncologists. Coevally, structural development has changed the oncological working environment. This survey investigated the quality of life and job stress among German oncological physicians. Methods: A 48-item questionnaire, which included the ‘Stress questionnaire of physicians and nurses' (FBAS), was developed by the ‘Quality of life' working group of the Internal oncology study group (AIO), and distributed anonymously at the annual meeting of the AIO working group in 2010. Descriptive statistics as well as univariate and multivariate analysis were performed. Results: 261 oncologists, mostly male (64%), older than 40 years (38%), and medical specialists (78%), took part in the survey. ‘Structural conditions' were identified as causing the highest mean stress levels, followed by ‘professional and private life'. Female participants showed a significantly lower global quality of life than male participants (p = 0.020). ‘Structural conditions' induced more stress among younger oncologists < 50 years old (p < 0.001). Qualification status was influenced by gender (p < 0.001); the multivariate analysis described the dependence of gender (p = 0.0045), working situation (p = 0.0317) and global stress (p = 0.0008). Conclusion: Structural conditions, age younger than 50 years and female gender were identified as stress risk factors among the AIO members, and showed that job stress is present in German oncology. Further research is warranted to develop evidence-based intervention strategies.
D4.15 Report on integrating API into GGP
Creators: name: Koops, Judith C.
name: Tijdens, Kea G.
Publisher: name: Zenodo
Year: 2021
Subjects: SSHOC
Social Sciences and Humanities Open Cloud
European Open Science Cloud
EOSC
survey data

description: Task 4.5 Social policy APIs for social surveys in the Social Sciences and Humanities Open Cloud project aims to demonstrate the application of social policy APIs in a social sciences survey infrastructure. A proof of concept was prepared by the Generations and Gender Programme and the WageIndicator Survey in the form of an experiment in which a Social Policy Module was integrated in the Dutch WageIndicator Survey. The experiment can be used as a template for future applications which aim to link social policy information with information of individuals or households. The Social Policy Module was collected from June until September 2021 among Dutch men and women. The response rate of the Social Policy Module was about 30%. In total 86 respondents judged the estimated family benefits, and 50 respondents judged the estimated housing benefits. Integrating social policy information via an API into a survey can facilitate the integration of complex social policy information captured in complex algorithms. The API approach is scalable, it can be used with a wide range of social policy information, and it can serve different purposes such as validating an existing database, improving a survey instrument and collecting substantive information about the effect of social policies on people’s perceptions. Implementing a social policy API in an existing social sciences infrastructure can substantially reduce costs for social policy data collection, without substantially increasing interview time or respondent burden. Researchers preparing a social policy API are advised to follow the ‘FAIR Guiding Principles for scientific data management and stewardship’ in order to make the product findable, accessible, interoperable and reusable for others.
Dynamical approach to spectator fragmentation in Au+Au reactions at 35 MeV/A
Creators: name: Vermani, Yogesh K.
name: Puri, Rajeev K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The characteristics of fragment emission in peripheral $^{197}$Au+$^{197}$Au collisions 35 MeV/A are studied using the two clusterization approaches within framework of \emph{quantum molecular dynamics} model. Our model calculations using \emph{minimum spanning tree} (MST) algorithm and advanced clusterization method namely \emph{simulated annealing clusterization algorithm} (SACA) showed that fragment structure can be realized at an earlier time when spectators contribute significantly toward the fragment production even at such a low incident energy. Comparison of model predictions with experimental data reveals that SACA method can nicely reproduce the fragment charge yields and mean charge of the heaviest fragment. This reflects suitability of SACA method over conventional clusterization techniques to investigate spectator matter fragmentation in low energy domain.
description: 6 pages, 5 figures, accepted
Effect of turbulent fluctuations on the drag and lift forces on a towed sphere and its boundary layer
Creators: name: Homann, Holger
name: Bec, Jérémie
name: Grauer, Rainer
Publisher: name: arXiv
Year: 2010
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The impact of turbulent fluctuations on the forces exerted by a fluid on a towed spherical particle is investigated by means of high-resolution direct numerical simulations. The measurements are carried out using a novel scheme to integrate the two-way coupling between the particle and the incompressible surrounding fluid flow maintained in a high-Reynolds-number turbulent regime. The main idea consists in combining a Fourier pseudo-spectral method for the fluid with an immersed-boundary technique to impose the no-slip boundary condition on the surface of the particle. Benchmarking of the code shows a good agreement with experimental and numerical measurements from other groups. A study of the turbulent wake downstream the sphere is also reported. The mean velocity deficit is shown to behave as the inverse of the distance from the particle, as predicted from classical similarity analysis. This law is reinterpreted in terms of the principle of "permanence of large eddies" that relates infrared asymptotic self-similarity to the law of decay of energy in homogeneous turbulence. The developed method is then used to attack the problem of an upstream flow that is in a developed turbulent regime. It is shown that the average drag force increases as a function of the turbulent intensity and the particle Reynolds number. This increase is significantly larger than predicted by standard drag correlations based on laminar upstream flows. It is found that the relevant parameter is the ratio of the viscous boundary layer thickness to the dissipation scale of the ambient turbulent flow. The drag enhancement can be motivated by the modification of the mean velocity and pressure profile around the sphere by small scale turbulent fluctuations.
description: 24 pages, 22 figures
Spectral interactions between strings in the Higgs background
Creators: name: Bochniak, Arkadiusz
name: Sitarz, Andrzej
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We derive the exact form of the spectral interaction of two strings mediated by a constant scalar field using methods derived from noncommutative geometry. This is achieved by considering a non-product modification of the Connes-Lott model with two-dimensional manifolds. The analogy with the latter construction justifies the interpretation of the scalar field as being of Higgs type. Working in dimension two requires the use of the spectral zeta function instead of the Wodzicki residue techniques applicable to four-dimensional models. In the latter case, an analogous non-product geometry construction leads, for specific choices of metrics, to the so-called "doubled geometry models", which can be thought of as a spectral modification of the Hassan-Rosen bimetric theory. We find that in dimension two, the interaction term depends explicitly on zweibeins defining the Dirac operators and only in some special cases can they be expressed solely using the metrics. The computations can be performed analytically for an arbitrary choice of zweibeins defining geometry on the two strings.
description: 10 pages, Eur. Phys. J. Spec. Top. (2023)
N=2 Generalized Superconformal Quiver Gauge Theory
Creators: name: Nanopoulos, Dimitri
name: Xie, Dan
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Four dimensional N=2 generalized superconformal field theory can be defined by compactifying six dimensional (0,2) theory on a Riemann surface with regular punctures. In previous studies, gauge coupling constant space is identified with the moduli space of punctured Riemann surface M_{g,n}. We show that the weakly coupled gauge group description corresponds to a stable nodal curve, and the coupling space is actually the Deligne-Mumford compactification \bar{M}_{g,n}. We also give an algorithm to determine the weakly coupled gauge group and matter content in any duality frame.
description: v2, reorganizing the materials, discussions on 2d CFT is removed
L’ULTIMO ASSOLUTO DELLA RELATIVITÀ
Creators: name: Roselli, Andrea
Publisher: name: ACME
Year: 2014

description: Si mostra come la celebre disputa tra Einstein e Bohr riguardi i concetti di realtà retrostanti le loro relative concezioni della realtà fisica; conseguentemente, viene suggerita una significativa connessione tra le teorie di Copenaghen e la relatività einsteiniana. Bohr considerava la descrizione della realtà offerta dalla meccanica quantistica completa; Einstein, al contrario (nonostante il contributo apportato alla sua nascita), continuava a cercare una teoria deterministica. Quando nel 1935 Einstein, Podolsky e Rosen pubblicarono il famoso EPR, Bohr replicò centrando l’attenzione sul ragionevole criterio di realtà proposto dagli autori, rimarcando l’inconsistenza concettuale dell’esistenza indipendente di un costitutivo “inconoscibile”. La fisica, attraverso la grande lezione epistemologica – come era solito dirne Niels Bohr – rappresentata dalla MQ, si trovava di fronte ad una capitale questione filosofica: che cosa è la realtà? Viene infine suggerita una giustapposizione della problematizzazione einsteiniana del concetto di simultaneità e del carattere reciproco delle misurazioni quantomeccaniche esposto da Bohr, che suggerisce l’abbandono dell’ultimo grande assoluto: una realtà assoluta.
description: ACME, Vol 66, No 1-2 (2013)
Extragalactic Very-High-Energy gamma-ray background
Creators: name: Neronov, A.
name: Semikoz, D. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the origin of the extragalactic diffuse gamma-ray background using the data from the Fermi telescope. To estimate the background level, we count photons at high Galactic latitudes |b|>60 degrees. Subtracting photons associated to known sources and the residual cosmic ray and Galactic diffuse backgrounds, we estimate the Extragalactic Gamma-ray Background (EGB) flux. We find that the spectrum of EGB in the very-high-energy (VHE) band above 30 GeV follows the stacked spectrum of BL Lacs. LAT data reveal the positive (1+z)^k, 130 GeV could be completely explained by emission from unresolved BL Lacs if k~3.
description: 8 pages, 6 figures, accepted to Astrophysics Journal