cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Il tempo dell’emergenza come occasione tras-formativa personale e professionale
Creators: name: Chianese, Gina
name: Bembich, Caterina
Publisher: name: Università degli Studi di Ferrara
Year: 2021

description: Abstract – The Covid experience has certainly been a disruptive event in people’s lives, raising new issues but also generating unexpected outcomes. In particular for educators, who base their professionalism on relationship aspects, the social distancing has certainly represented a critical element; but at the same time it has constituted an opportunity to start trans-formation processes. Through a process of research and training, the educators of the services of the municipality of Trieste were confronted with “disorienting dilemmas” that constituted an opportunity to start a reflexive re-examination of the basic premises that characterise their professional action and the perception of well-being in the working contexts. Riassunto – L’esperienza del Covid ha certamente costituito un evento dirompente nella vita delle persone, sollevando nuove problematicità ma generando anche esiti inattesi. In particolare per gli educatori, che fondano la propria professionalità sugli aspetti di relazione, il distanziamento sociale ha certamente rappresentato un elemento di criticità; ma allo stesso tempo ha costituito l’occasione per avviare dei processi di tras-formazione. Attraverso un percorso di ricerca e formazione gli operatori dei servizi del comune di Trieste sono stati messi a confronto con dei “dilemmi disorientanti” che hanno costituito l’occasione per avviare una re-visione riflessiva e tras-formativa rispetto alle premesse di fondo che caratterizzano il proprio agire professionale e la percezione del benessere nei contesti di lavoro. Keywords – educator, reflection, disorienting dilemma, transformation, professional action Parole chiave – educatore, riflessione, dilemma disorientante, trasformazione, agire professionale
description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Experimental Demonstration of Macroscopic Quantum Coherence in Gaussian States
Creators: name: Marquardt, Christoph
name: Andersen, Ulrik L.
name: Leuchs, Gerd
name: Takeno, Yuishi
name: Yukawa, Mitsuyoshi
name: Yonezawa, Hidehiro
name: Furusawa, Akira
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We witness experimentally the presence of macroscopic coherence in Gaussian quantum states using a recently proposed criterion (E.G. Cavalcanti and M. Reid, Phys. Rev. Lett. 97, 170405 (2006)). The macroscopic coherence stems from interference between macroscopically distinct states in phase space and we prove experimentally that even the vacuum state contains these features with a distance in phase space of $0.51\pm0.02$ shot noise units (SNU). For squeezed states we found macroscopic superpositions with a distance of up to $0.83\pm0.02$ SNU. The proof of macroscopic quantum coherence was investigated with respect to squeezing and purity of the states.
description: 5 pages, 6 figures
Concurrence of anomalous Hall effect and charge density wave in a superconducting topological kagome metal
Creators: name: Yu, F. H.
name: Wu, T.
name: Wang, Z. Y.
name: Lei, B.
name: Zhuo, W. Z.
name: Ying, J. J.
name: Chen, X. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: As one of the most fundamental physical phenomena, the anomalous Hall effect (AHE) typically occurs in ferromagnetic materials but is not expected in the conventional superconductors. Here, we have observed a giant AHE in kagome superconductor CsV3Sb5 with transition temperature (Tc) of 2.7 K. The anomalous Hall conductivity reaches up to 2.1*10^4 Ω-1 cm-1 which is larger than those observed in most of the ferromagnetic metals. Strikingly, the emergence of AHE exactly follows the higher-temperature charge-density-wave (CDW) transition with TCDW ~ 94 K, indicating a strong correlation between the CDW state and AHE. Furthermore, AHE disappears when the CDW transition is completely suppressed at high pressure. The origin for AHE is attributed to enhanced skew scattering in CDW state and large Berry curvature arose from the kagome lattice. These discoveries make CsV3Sb5 as an ideal platform to study the interplay among nontrivial band topology, CDW and unconventional superconductivity.
An investigation on clonal diversity of Escherichia coli from cattle in smallholdings while using selective media for O157 strains
Creators: name: Md Zohorul Islam
name: Christensen, Jens
name: Paritosh  Biswas
Publisher: name: F1000Research
Year: 2015

description: An investigation was carried out to verify the diversity of shiga toxin producing Escherichia coli (STEC) O157 strains isolated from fecal materials originated from smallholders’ cattle while using cefixime-tellurite added sorbitol MacConkey (CT-SMAC) agar. The diversities among the sorbitol non-fermenter from the said materials were verified by conventional cultural methods and application of some molecular diagnostic tools. 44 isolates were found sorbitol non fermenter in conventional culture methods. Thirty six (~7%) of the 44 isolates were diagnosed positive with ≥ 1 virulent genes of STEC O157. Six genotypes were identified by PFGE in 7 isolates that lacked any of the four virulent genes; plasmid profiling identified variable number of different sizes plasmids in them. Variable resistance profiles were seen among the isolates tested.
The quantum smectic as a dislocation Higgs phase
Creators: name: Cvetkovic, V.
name: Zaanen, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The theory describing quantum-smectics in 2+1 dimensions, based on topological quantum melting is presented. This is governed by a dislocation condensate characterized by an ordering of Burger's vector and this `dual shear superconductor' manifests itself in the form of a novel spectrum of phonon-like modes.
description: 5 pages, 3 figures; minor changes in the text
Un modello di formazione dei docenti, per una ricaduta efficace sulla didattica digitale inclusiva
Creators: name: Dettori, Filippo G.
name: Letteri, Barbara
Publisher: name: Università degli Studi di Ferrara
Year: 2021

description: Abstract – The contribution aims to illustrate the training model experimented in a comprehensive school in Sardinia by 4 specialized support teachers coordinated by two researchers and, subsequently, shared with all teachers of the school. It will illustrate the model developed and tested, aimed at a child with autism spectrum disorder, using the trialogical learning approach (TLA), for a design of educational interventions mediated by technology. Starting from the six basic principles of the approach, we intend to propose a project work in a perspective of inclusive teaching with the use of technology. The proposed design is detailed in the detection of objectives, timing, methodologies, stages and evaluation processes and self-evaluation. Riassunto – Il contributo intende illustrare il modello formativo sperimentato in un istituto comprensivo della Sardegna da 4 insegnanti di sostegno specializzati, coordinati da due ricercatori e, in seguito, condiviso con tutti i docenti della scuola. Si illustrerà il modello sviluppato e sperimentato, rivolto a un bambino con disturbo dello spettro dell’autismo, con l’utilizzo dell’approccio trialogico all’apprendimento (TLA), per una progettazione di interventi educativo-didattici mediati dalle tecnologie. Partendo dai sei principi base dell’approccio, si intende proporre un project work in un’ottica di didattica inclusiva con l’utilizzo delle TIC. La progettazione proposta è dettagliata nella rilevazione degli obiettivi, nei tempi, nelle metodologie, nelle fasi e nei processi valutativi e autovalutativi. Keywords – ICT, SEN, TLA, inclusion, CAA Parole chiave –TIC, BES, TLA, inclusione, CAA
description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Harmonic maps from degenerating Riemann surfaces
Creators: name: Zhu, Miaomiao
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 58E20

description: We study harmonic maps from degenerating Riemann surfaces with uniformly bounded energy and show the so-called generalized energy identity. We find conditions that are both necessary and sufficient for the compactness in $W^{1,2}$ and $C^{0}$ modulo bubbles of sequences of such maps.
description: 27 pages
An investigation on clonal diversity of Escherichia coli from cattle in smallholdings while using selective media for O157 strains
Creators: name: Md Zohorul Islam
Publisher: name: F1000Research
Year: 2015

description: An investigation was carried out to verify the diversity of shiga toxin producing Escherichia coli (STEC) O157 strains isolated from fecal materials originated from smallholders’ cattle while using cefixime-tellurite added sorbitol MacConkey (CT-SMAC) agar. The diversities among the sorbitol non-fermenter from the said materials were verified by conventional cultural methods and application of some molecular diagnostic tools. 44 isolates were found sorbitol non fermenter in conventional culture methods. Thirty six (~7%) of the 44 isolates were diagnosed positive with ≥ 1 virulent genes of STEC O157. Six genotypes were identified by PFGE in 7 isolates that lacked any of the four virulent genes; plasmid profiling identified variable number of different sizes plasmids in them. Variable resistance profiles were seen among the isolates tested.
Dissipative Dark Matter on FIRE: I. Structural and kinematic properties of dwarf galaxies
Creators: name: Shen, Xuejian
name: Hopkins, Philip F.
name: Necib, Lina
name: Jiang, Fangzhou
name: Boylan-Kolchin, Michael
name: Wetzel, Andrew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the first set of cosmological baryonic zoom-in simulations of galaxies including dissipative self-interacting dark matter (dSIDM). These simulations utilize the Feedback In Realistic Environments (FIRE-2) galaxy formation physics, but allow the dark matter to have dissipative self-interactions analogous to Standard Model forces, parameterized by the self-interaction cross-section per unit mass, $(σ/m)$, and the dimensionless degree of dissipation, $0
description: Accepted by MNRAS. 23 pages, 19 figures
Additional file 1 of MHC class I links with severe pathogenicity in C57BL/6N mice infected with SARS-CoV-2/BMA8
Creators: name: Qin, Tian
name: Shen, Beilei
name: Li, Entao
name: Jin, Song
name: Luo, Rongbo
name: Zhang, Yiming
name: Qi, Jing
name: Deng, Xiuwen
name: Shi, Zhuangzhuang
name: Wang, Tiecheng
name: Zhou, Yifa
name: Gao, Yuwei
Publisher: name: figshare
Year: 2023
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1 TableS1. The list of RT-qPCR primers used in this study. Fig.S1Acquisition of SARS-CoV-2 mouse-adapted strain BMA8. Fig.S2The effects of BMA8 strain on pathogenicity of infected mice. Fig.S3 The NP expression in lung tissues of infected mice. Fig. S4 The effects of BMA8 strain infection on the expression of inflammation-related genes in lung tissues of C57BL/6N and BALB/c mice at 0 dpi and 3 dpi, including Ifnb1, Cxcl10, Ccl2, Il6, Tnf, Ifit3, Irf7, Gbp5 and Isg15. Fig. S5 The expression levels of ACE2 protein in lung and kidney tissues of C57BL/6N and BALB/c mice; β-actin was used as a loading control. Fig. S6 Effects of H-2Kb mAbs on body weight and survival rate of mice infected with BMA8 strain. Fig. S7 Effects of H-2Kb mAbs on pathogenicity of BMA8 strain in C57BL/6N mice. Fig. S8 The expression of NP in lung tissues of infected mice. Fig. S9 The effects of BMA8 strain infection on the expression of inflammation-related genes in lung tissues of C57BL/6N and BALB/c mice with or without H-2Kb mAbs treatment, including Ifnb1, Cxcl9, Cxcl10, Ccl2, Ccl3, Ccl5, Il6, Tnf, Ifit3, Mx1 and Irf7.
Universal emergence of the one-third plateau in the magnetization process of frustrated quantum spin chains
Creators: name: Heidrich-Meisner, F.
name: Sergienko, I. A.
name: Feiguin, A. E.
name: Dagotto, E. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a numerical study of the magnetization process of frustrated quantum spin-S chains with S=1, 3/2, 2 as well as the classical limit. Using the exact diagonalization and density-matrix renormalization techniques, we provide evidence that a plateau at one third of the saturation magnetization exists in the magnetization curve of frustrated spin-S chains with S>1/2. Similar to the case of S=1/2, this plateau state breaks the translational symmetry of the Hamiltonian and realizes an up-up-down pattern in the spin component parallel to the external field. Our study further shows that this plateau exists both in the cases of an isotropic exchange and in the easy-axis regime for spin-S=1, 3/2, and 2, but is absent in classical frustrated spin chains with isotropic interactions. We discuss the magnetic phase diagram of frustrated spin-1 and spin-3/2 chains as well as other emergent features of the magnetization process such as kink singularities, jumps, and even-odd effects. A quantitative comparison of the one-third plateau in the easy-axis regime between spin-1 and spin-3/2 chains on the one hand and the classical frustrated chain on the other hand indicates that the critical frustration and the phase boundaries of this state rapidly approach the classical result as the spin S increases.
description: 15 pages RevTex4, 13 figures
Well-balanced treatment of gravity in astrophysical fluid dynamics simulations at low Mach numbers
Creators: name: Edelmann, P. V. F.
name: Horst, L.
name: Berberich, J. P.
name: Andrassy, R.
name: Higl, J.
name: Leidi, G.
name: Klingenberg, C.
name: Roepke, F. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Numerical Analysis (math.NA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Accurate simulations of flows in stellar interiors are crucial to improving our understanding of stellar structure and evolution. Because the typically slow flows are merely tiny perturbations on top of a close balance between gravity and the pressure gradient, such simulations place heavy demands on numerical hydrodynamics schemes. We demonstrate how discretization errors on grids of reasonable size can lead to spurious flows orders of magnitude faster than the physical flow. Well-balanced numerical schemes can deal with this problem. Three such schemes were applied in the implicit, finite-volume Seven-League Hydro (SLH) code in combination with a low-Mach-number numerical flux function. We compare how the schemes perform in four numerical experiments addressing some of the challenges imposed by typical problems in stellar hydrodynamics. We find that the $α$-$β$ and deviation well-balancing methods can accurately maintain hydrostatic solutions provided that gravitational potential energy is included in the total energy balance. They accurately conserve minuscule entropy fluctuations advected in an isentropic stratification, which enables the methods to reproduce the expected scaling of convective flow speed with the heating rate. The deviation method also substantially increases accuracy of maintaining stationary orbital motions in a Keplerian disk on long timescales. The Cargo-LeRoux method fares substantially worse in our tests, although its simplicity may still offer some merits in certain situations. Overall, we find the well-balanced treatment of gravity in combination with low Mach number flux functions essential to reproducing correct physical solutions to challenging stellar slow-flow problems on affordable collocated grids.
description: Accepted for publication in A&A
Integrative network analysis of epigenetic and genomic data for colorectal cancer
Creators: name: Pranav Srinivas
Publisher: name: F1000Research
Year: 2015

description: In this work we propose an integrative framework to identify epigenetic and genomic drivers as well as deregulated pathways and crosstalk in colorectal cancer using a Bayesian network model derived from the Cancer Genome Atlas (TCGA) data. For feature selection we first define a set of seed genes implicated for colorectal cancer in literature and enrich them using prior knowledge of pathways connectivity. We derive a unified Boolean signaling network of all major KEGG signaling pathways and use a novel metric based on node degree and pathway coverage for feature selection enrichment. The unified network consists of 1320 nodes and 2511 edges. After selecting 98 genes using network enrichment we examine their HM450 DNA methylation levels and log2 copy number variation data for additional feature selection and select 37 (hypo/hyper) methylation sites and 52 copy number variation sites.

The methylation, CNV and mRNA gene expression data were discretized for Bayesian structure learning. DNA promoter methylation levels were classified into one of hypo, normal or hyper state. Similarly CNV data was classified as loss, norm or gain. Gene expression levels were grouped under low, medium and high state. Bootstrap sampling and model averaging were used to minimize the impact of local optima on learning and subsequent causal inference. The network structure from each bootstrap sample was learned with a hill-climbing search and a Bayesian Dirichlet equivalent posterior density network score.

Copy number variations (CNV) is a major factor contributing to gene expression amplification and attenuation sometimes in conjunction with methylation. However many samples also show CNV induced effect working against methylation induced one. The most frequently deregulated pathways in colorectal cancer include PI3K/AKT, TGF-β, KRAS-MAPK and Apoptosis. The constructed Bayesian network also points to new epigenetic and genetic pathways, which could give further insight into molecular basis of colorectal cancer.
Higgs mechanism and superconductivity in U(1) lattice gauge theory with dual gauge fields
Creators: name: Ono, Tomoyoshi
name: Moribe, Yuki
name: Takashima, Shunsuke
name: Ichinose, Ikuo
name: Matsui, Tetsuo
name: Sakakibara, Kazuhiko
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We introduce a U(1) lattice gauge theory with dual gauge fields and study its phase structure. This system is motivated by unconventional superconductors like extended s-wave and d-wave superconductors in the strongly-correlated electron systems. In this theory, the "Cooper-pair" field is put on links of a cubic lattice due to strong on-site repulsion between electrons in contrast to the ordinary s-wave Cooper-pair field on sites. This Cooper-pair field behaves as a gauge field dual to the electromagnetic U(1) gauge field. By Monte Carlo simulations we study this lattice gauge model and find a first-order phase transition from the normal state to the Higgs (superconducting) state. Each gauge field works as a Higgs field for the other gauge field. This mechanism requires no scalar fields in contrast to the ordinary Higgs mechanism.
description: 4 pages, 6 figures
Prender parola. Il dialogo come strumento educativo e l’insegnante come facilitatore per costruire una classe-comunità inclusiva. Riflessioni a partire dalle pedagogie della parola e del dialogo e dalla Philosophy for Children
Creators: name: Ferrero, Valerio
Publisher: name: Università degli Studi di Ferrara
Year: 2021

description: Abstract – The pedagogical reflection that is articulated in this essay starts from the idea that learning must be an active construction by learners. Specifically, it is necessary that pupils acquire both disciplinary contents and transversal skills that allow them to exercise an active and aware citizenship. Dialogue appears to be the educational tool to act in this perspective, since it is an inclusive platform that allows the democratic participation of all in the learning process and an interactive relationship with knowledge. The contributions of the pedagogies of word and dialogue and the curriculum of Philosophy for Children developed by Matthew Lipman open to reflection on how dialogue can be engaged in daily practice, through a transformation of the usual educational setting and a change in the role of the teacher, who becomes facilitator of the heuristic path. Riassunto – La riflessione pedagogica che si articola in questo saggio prende le mosse dall’idea che l’apprendimento debba essere una costruzione attiva da parte dei soggetti in formazione. Nello specifico, occorre che alunne e alunni acquisiscano sia saperi disciplinari sia competenze trasversali che permettano loro di esercitare una cittadinanza attiva e consapevole. Il dialogo appare lo strumento educativo per agire in questa prospettiva, poiché è una piattaforma inclusiva che permette la partecipazione democratica di tutte e tutti al processo di apprendimento e una relazione interattiva con la conoscenza. I contributi delle pedagogie della parola e del dialogo e il curricolo della Philosophy for Children elaborato da Matthew Lipman aprono alla riflessione su come innestare il dialogo nella pratica quotidiana, attraverso una trasformazione del consueto setting formativo e un cambiamento del ruolo dell’insegnante, che diviene facilitatore o facilitatrice del percorso euristico. Keywords – dialogue, pedagogy, Philosophy for Children, democracy, equity Parole chiave – dialogo, pedagogia, Philosophy for Children, democrazia, equità
description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Educazione fisica inclusiva a scuola. Uno studio pilota
Creators: name: Magnanini, Angela
Publisher: name: Università degli Studi di Ferrara
Year: 2021

description: Abstract – The growing trend of inclusive physical education relies on different traditions amongst the European countries. In Italy it has been following the legislation on educational inclusion since the 1970s. Students with special educational needs, regardless of their health condition, must participate in physical activities together with all other students. The aim of this study is to carry out a pilot study showing if the regulation on physical education is actually matching with the practice of physical education at school in Italy. During the school year 2019-2020, 50 physical education teachers coming from high schools in Rome have been required to fill in the Lieberman-Brian Inclusion Rating Scale for Physical Education (LIRSPE). The purpose of this rating scale is to evaluate the effort made by teachers to include people with disabilities in a general physical education environment. Riassunto – La parabola dell'educazione fisica inclusiva segue itinerari differenti nei Paesi europei. In Italia, gli studenti con bisogni educativi speciali, indipendentemente dalle loro condizioni di salute, partecipano alle attività fisiche e sportive insieme a tutti gli altri (in continuità con le scelte inclusive legislative adottate fin dagli anni Settanta). L'obiettivo di questo saggio è presentare i risultati di uno studio pilota teso a evidenziare la eventuale “dimensione” inclusiva dell’educazione fisica nella scuola. Attraverso un campionamento a valanga, sono stati individuati 50 insegnanti di educazione fisica delle scuole secondarie di primo grado di Roma, ai quali è stata somministrata la Lieberman-Brian Inclusion Rating Scale for Physical Education (LIRSPE) nell'anno scolastico 2019-2020. Lo scopo della Scala è quello di valutare lo sforzo compiuto dagli insegnanti per includere gli studenti con difficoltà in un contesto di educazione fisica generale. Keywords – physical education, teacher, inclusive school, Lirpse Scale, special normality Parole chiave – educazione fisica, insegnante, scuola inclusiva, Scala Lirpse, speciale normalità
description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Insegnanti, comunità scolastica e pandemia: conseguenze e poste in gioco
Creators: name: Martinelli, Chiara
name: Oliviero, Stefano
Publisher: name: Università degli Studi di Ferrara
Year: 2021

description: Abstract – Interrogating historical memories proves to be meaningful both for analyzing their stratification and for studying them in their creating process. Following this perspective, indagating how ways of lives were affected by Covid-19 epidemy let us discover which outcomes are determined by a traumatic event and how possible criticities can be treated. Such an assumption must be considered in approaching how school was influenced by epidemy and lockdown: these events, indeed, nourished social, economic and cultural inequalities already developed throughout last decades. This paper aims at analysing teachers’ pedagogical resilience and attitudes as recorded by interview realized for the project “Vita ed educazione ai tempi del covid-19” led by the University of Florence. Teachers (almost of all, the youngest and the precarious ones) felt abandoned by the State in facing epidemy; this awareness let them enforce the emotive and relational dimension. Riassunto – Interrogare la memoria “storica” si rivela significativo sia quando ne vengono analizzate le stratificazioni sia quando è colta nel suo farsi. In questa prospettiva, indagare il modo di vivere nel corso della pandemia da Covid-19 permette di decifrare le conseguenze di un evento traumatico, consentendoci di curare le eventuali criticità. Questo assunto è tanto più valido se ci soffermiamo sulla scuola, dove il lockdown ha acuito disuguaglianze economiche, sociali e culturali già manifestatesi negli ultimi decenni. Questo contributo intende indagare la resilienza pedagogica e i comportamenti degli insegnanti attraverso le videointerviste realizzate per il progetto “Vita ed educazione ai tempi del covid-19” dal Laboratorio di Public History dell’Università di Firenze. La percezione di abbandono da parte dello Stato, significativa soprattutto tra i lavoratori più giovani e precari, ha condotto a valorizzare la dimensione emotiva-relazionale. Keywords – Covid-19, school, lockdown, online classes, teachers Parole chiave – Covid-19, scuola, lockdown, didattica a distanza, insegnanti
description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Conformal Symmetries for Extremal Black Holes with General Asymptotic Scalars in STU Supergravity
Creators: name: Cvetic, M.
name: Pope, C. N.
name: Saha, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a construction of the most general BPS black holes of STU supergravity (${\cal N}=2$ supersymmetric $D=4$ supergravity coupled to three vector super-multiplets) with arbitrary asymptotic values of the scalar fields. These solutions are obtained by acting with a subset of of the global symmetry generators on STU BPS black holes with zero values of the asymptotic scalars, both in the U-duality and the heterotic frame. The solutions are parameterized by fourteen parameters: four electric and four magnetic charges, and the asymptotic values of the six scalar fields. We also present BPS black hole solutions of a consistently truncated STU supergravity, which are parameterized by two electric and two magnetic charges and two scalar fields. These latter solutions are significantly simplified, and are very suitable for further explicit studies. We also explore a conformal inversion symmetry of the Couch-Torrence type, which maps any member of the fourteen-parameter family of BPS black holes to another member of the family. Furthermore, these solutions are expected to be valuable in the studies of various swampland conjectures in the moduli space of string compactifications.
description: V2. Updated reference. Minor changes to the concluding remarks and outlook section
Additional file 5 of Comparative analyses of three complete Primula mitogenomes with insights into mitogenome size variation in Ericales
Creators: name: Wei, Lei
name: Liu, Tong-Jian
name: Hao, Gang
name: Ge, Xue-Jun
name: Yan, Hai-Fei
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5: Figure S5. The three longest LCBs and their distribution in Primula taxa.
A Possible Hadronic Origin of TeV Photon Emission from SNR G106.3+2.7
Creators: name: Yang, Chuyuan
name: Zeng, Houdun
name: Bao, Biwen
name: Zhang, Li
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In our model, the acceleration and propagation of particles from the Bohm-like diffusion region inside the SNR to the Galactic diffusion region outside the SNR are described through nonlinear diffusive shock acceleration (NLDSA). The main content of our NLDSA model is to solve the hydrodynamic equations numerically for gas density, gas velocity, gas pressure as well as the equation for the quasi-isotropic particle momentum distribution. The consequent multi-band non-thermal emission is from two different regions, namely the acceleration region and the escaping region. Our model is capable of explaining the multi-band photon emission via the dominant synchrotron radiation of the electrons accelerated inside the SNR; and the photons with energy of $\gtrsim$ GeV are naturally produced by the protons inside and outside the SNR. Moreover, the photons in the energy range of $\sim 1 - \sim 100$ TeV are due to the interaction of escaped protons with dense molecular clouds. For the photons with energy of $E_γ\gtrsim $ 1 GeV from SNR G106.3+2.7, our results here favor a hadronic origin, where the photons in the energy range of $\sim 1$ GeV to $\sim 1$ TeV are produced inside the SNR through proton-proton interaction, while the photons with $E_γ\gtrsim 1$ TeV originate from the interaction of escaped protons with a dense molecular cloud.
description: 6 pages,4 figures, Accepted for publication in A&A
DaD: tutti bocciati? Professionalità docente e rapporti di cura nell’esperienza dei genitori
Creators: name: Zurru, Antioco Luigi
name: Tatulli, Ilaria
name: Bullegas, Daniele
name: Mura, Antonello
Publisher: name: Università degli Studi di Ferrara
Year: 2021

description: Abstract – Researches and reports on Remote Learning are constantly increasing and demonstrate the importance that the topic holds also for the teachers’ professionalism. This is an operational situation that highlights a context of complexity characterized by multiple criticalities. Nevertheless, some didactic micro-projects have faced the pandemic phenomenon and have created well-being and inclusion conditions. The paper presents the developments of a research path aimed at identifying the distinctive elements within an educational experimentation that during the pandemic created well-being conditions for children and families. Through the provision of a questionnaire addressed to the parents of the pupils in an experimental class and the carrying out of a group interview, emerge the elements that characterize the care action developed by the teachers, with a teaching practice aware of families and children needs. Riassunto – Le ricerche e i report sulla DaD sono in continua crescita e dimostrano la pregnanza che il tema assume anche per la professionalità dei docenti. Si tratta di un frangente operativo che porta alla luce un contesto di complessità caratterizzato da molteplici criticità. Ciononostante, alcune microprogettazioni didattiche hanno fatto fronte al fenomeno pandemico, realizzando condizioni di benessere e di inclusione. Il contributo presenta gli sviluppi di un percorso di ricerca teso ad individuare gli elementi distintivi di una sperimentazione didattica, già in corso di realizzazione, che durante la pandemia ha costruito condizioni di benessere per gli alunni e per le famiglie. Con la somministrazione di un questionario rivolto ai genitori di una classe sperimentale e la realizzazione di un’intervista di gruppo, emergono gli aspetti che caratterizzano l’azione di cura sviluppata dalle insegnanti, attraverso “un fare didattico” consapevolmente attento ai bisogni delle famiglie e degli alunni. Keywords – Special Didactics, teachers’ professionalism, Remote Learning, parents’ experiences, care Parole chiave – Didattica Speciale, professionalità docente, DaD, esperienze dei genitori, cura
description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Posterior consistency of Gaussian process prior for nonparametric binary regression
Creators: name: Ghosal, Subhashis
name: Roy, Anindya
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G08, 62G20 (Primary)

description: Consider binary observations whose response probability is an unknown smooth function of a set of covariates. Suppose that a prior on the response probability function is induced by a Gaussian process mapped to the unit interval through a link function. In this paper we study consistency of the resulting posterior distribution. If the covariance kernel has derivatives up to a desired order and the bandwidth parameter of the kernel is allowed to take arbitrarily small values, we show that the posterior distribution is consistent in the $L_1$-distance. As an auxiliary result to our proofs, we show that, under certain conditions, a Gaussian process assigns positive probabilities to the uniform neighborhoods of a continuous function. This result may be of independent interest in the literature for small ball probabilities of Gaussian processes.
description: Published at http://dx.doi.org/10.1214/009053606000000795 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Neutral atom transport from the termination shock to 1 AU
Creators: name: Bzowski, Maciej
name: Tarnopolski, Slawomir
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Dynamics of H, D, and heavy Energetic Neutral Atoms (ENA) between the termination shock and 1 AU is discussed in the context of the forthcoming NASA SMEX mission IBEX. In particular, effects of the velocity-dependent radiation pressure on atomic trajectories are considered and ionization losses between TS and 1 AU are studied. It is shown, among others, that most of the dynamical effects and ionization losses are induced within a few AU from the Sun, which translates to the time domain into $\sim 1 - 3$ solar rotations before detection. This loosens considerably time requirements for tracking the ionization and radiation pressure history to just prior 3 months. ENA seem excellent tracers of the processes within the heliospheric interface, with the transport effects between the termination shock and detector relatively mild and easy to account for.
description: submitted to Proceedings of the 5-th IGPP Astrophysics Conference, Honolulu HI, March 2006; 6 pages
Recensione a: L. Bellatalla, E. Marescotti (a cura di), Tra scienza e Storia dell’educazione. In dialogo con Giovanni Genovesi, Roma, Anicia, 2021
Creators: name: Orsomarso, Vincenzo
Publisher: name: Università degli Studi di Ferrara
Year: 2021

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description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Recensione a: V. Bosna, La mano che muove la culla del bambino è quella che comanda il mondo. I percorsi educativi delle donne in Albania tra XIX e XX secolo, Roma, Aracne, 2018
Creators: name: Tenerelli, Nicola
Publisher: name: Università degli Studi di Ferrara
Year: 2021

description: ---
description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Perturbative unitarity in quasi-single field inflation
Creators: name: Kim, Suro
name: Noumi, Toshifumi
name: Takeuchi, Keito
name: Zhou, Siyi
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study implications of perturbative unitarity for quasi-single field inflation with the inflaton and one massive scalar. Analyzing high energy scattering, we show that non-Gaussianities with $|f_{\rm NL}|\gtrsim1$ cannot be realized without turning on interactions which violate unitarity at a high energy scale. Then, we provide a relation between $f_{\rm NL}$ and the scale of new physics that is required for UV completion. In particular we find that for the Hubble scale $H\gtrsim 6\times 10^{9}$ GeV, Planck suppressed operators can easily generate too large non-Gaussanities and so it is hard to realize successful quasi-single field inflation without introducing a mechanism to suppress quantum gravity corrections. Also we generalize the analysis to the regime where the isocurvature mode is heavy and the inflationary dynamics is captured by the inflaton effective theory. Requiring perturbative unitarity of the two-scalar UV models with the inflaton and one heavy scalar, we clarify the parameter space of the $P(X,ϕ)$ model which is UV completable by a single heavy scalar.
description: 31 pages, 10 figures
The differential effects of harassment and sex on cardiovascular and salivary cortisol stress reactivity and recovery
Creators: name: Earle, Tracey Lynn
Publisher: name: University of British Columbia
Year: 2009

description: To explore the differential effects of harassment on cardiovascular and neuroendocrine stress reactivity and recovery, 28 males and 32 females were randomized to a harassment or no-harassment control condition (4 groups in total). The harassment consisted of 3 scripted statements delivered during performance of a mental arithmetic stress task. The harassing statements were delivered on a fixed schedule during the task by a same-sexed experimenter. Cardiovascular, salivary Cortisol and subjective state affect measures were taken at baseline, immediately post-task and throughout an extended recovery period. On all measures it was found that subjects in the harassed condition exhibited larger stress reactivity responses compared to the non-harassed subjects. The harassed males showed the largest reactivity in the physiological measures, as well as significant changes on subjective measures. Compared to the harassed males, the harassed females showed a more pronounced response on the subjective state affect measure of hostility, and a smaller, but still significant cardiovascular reactivity response. The only cardiovascular index to show significant changes for any of the subjects was systolic blood pressure (SBP); diastolic blood pressure and heart rate showed similar trends as SBP, but did not quite reach statistical significance. The harassed males were the only group to show significant Cortisol responses. Sex differences during the recovery periods were observed: the harassed males exhibited attenuated cardiovascular and Cortisol recovery, while females, overall tended to exhibited an over-compensation response on cardiovascular measures. It may be that cardiovascular and Cortisol sex differences in reactivity to emotional stressors, and recovery from, them indicate sex-specific pathways which may link negative affect (i.e., hostile or angry feelings) to development of cardiovascular disease.
Long range order for lattice dipoles
Creators: name: Giuliani, Alessandro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a system of classical Heisenberg spins on a cubic lattice in dimensions three or more, interacting via the dipole-dipole interaction. We prove that at low enough temperature the system displays orientational long range order, as expected by spin wave theory. The proof is based on reflection positivity methods. In particular, we demonstrate a previously unproven conjecture on the dispersion relation of the spin waves, first proposed by Froehlich and Spencer, which allows one to apply infrared bounds for estimating the long distance behavior of the spin-spin correlation functions.
description: 9 pages
Recensione a: L. De Cani, Videoricerca e pratiche riflessive nella pratica dei docenti, Brescia, Scholé Morcelliana, 2020
Creators: name: Cortiana, Paola
Publisher: name: Università degli Studi di Ferrara
Year: 2021

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description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Measurement of the hyperfine structure of the S1/2-D5/2 transition in 43Ca+
Creators: name: Benhelm, J.
name: Kirchmair, G.
name: Rapol, U.
name: Koerber, T.
name: Roos, C. F.
name: Blatt, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The hyperfine structure of the S1/2-D5/2 quadrupole transition at 729 nm in 43Ca+ has been investigated by laser spectroscopy using a single trapped 43Ca+ ion. We determine the hyperfine structure constants of the metastable level as A=-3.8931(2) MHz and B=-4.241(4) MHz. The isotope shift of the transition with respect to 40Ca+ was measured to be 4134.713(5) MHz. We demonstrate the existence of transitions that become independent of the first-order Zeeman shift at non-zero low magnetic fields. These transitions might be better suited for building a frequency standard than the well-known 'clock transitions' between m=0 levels at zero magnetic field.
description: corrected for sign errors in the hyperfine constants. No corrections to were made to the data analysis
Physical meaning of the deviation scale under arbitrary turbulence strengths of optical orbital angular momentum
Creators: name: Tao, Zhiwei
name: Ren, Yichong
name: Abdukirim, Azezigul
name: Liu, Shiwei
name: Rao, Ruizhong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The recently so-called deviation scale [C. M. Mabena et al., Phys. Rev. A 99, 013828 (2019)] bridges the connection between the result of the infinitesimal propagation equation (IPE) prediction and that of the single phase screen (SPS) approximation. Thanks to the multiple phase screen (MPS) approach, in this paper we elaborate the physical meaning of the deviation scale: the spatial accumulation of slight intensity modulation of incident orbital angular momentum (OAM) carrying beam splits the original vortex into multiple individual vortices with a topological charge (TC) of +1 and re-generates the vortex-antivortex pairs with a TC of +1 and with a TC of -1, leading to a significant deviation between these two different results only when the disruption of this compound effect on the phase distribution of the incident OAM-carrying beam becomes more significant. Other than that, we also show that the appearance of the deviation scale cannot be predicted only by the Rytov variance, which can be predicted through the vortex-splitting ratio of the received optical field alone or with the help of the normalized propagation distance.
description: 10 pages, 6 figures; This paper aims to give a suitable physical interpretation for the recently so-called deviation scale [C. M. Mabena et al., Phys. Rev. A 99, 013828 (2019)]
Recesione a: G. Genovesi, In viaggio con Dante per sentieri educativi, Roma, Anicia, 2021
Creators: name: Bellatalla, Luciana
Publisher: name: Università degli Studi di Ferrara
Year: 2021

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description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Head nurses’ perceptions of leadership in a community hospital
Creators: name: Giglio, Vivian L.
Publisher: name: University of British Columbia
Year: 2009

description: Decentralization and changes in the health care industry in British Columbia are forces which have precipitated changes in the head nurse role. Head nurses are in a pivotal leadership position within today’s nursing organizations and serve to intergrate staff nurses’ needs with the organizational goals and vision. However, there are few studies based on head nurses’ perceptions of their leadership. The purpose of this study was to describe head nurses’ perceptions of their leadership by using the transformational leadership framework (Bass, 1985b) to identify leadership styles and outcome factors. Specifically, this descriptive study examined head nurses’ perceptions of their leadership from transformational and transactional perspectives. The study was conducted in an acute care hospital in the Lower Mainland of British Columbia. A sample of 16 head nurses completed the Multifactor Leadership Questionnaire. Data were analyzed using descriptive statistics. The scores obtained were used to provide a profile for each head nurse, the head nurses as a group, and to compare data for the sample and normative groups. Generally, head nurses perceived their leadership to be transformational and, to a lesser degree, transactional. In transformational leadership, the head nurses reported using high levels of individualized consideration and inspirational behaviors. In transactional leadership, they reported using contingent reward behaviors, and to a much lesser extent, management-by-exception behaviors. In terms of outcomes, the group of head nurses perceived that their leadership style positively influenced organizational outcomes. Implications of the findings for nursing administration, education, and research are presented.
Recensione a: A. G. Lopez, R. Caso, A. Altamura, Servizi educativi, genitori e bambini. L’esperienza di un servizio di conciliazione all’Università di Foggia, Milano, FrancoAngeli, 2021
Creators: name: Disalvo, Angelica
Publisher: name: Università degli Studi di Ferrara
Year: 2021

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description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Effect of the cubic torus topology on cosmological perturbations
Creators: name: Eingorn, Maxim
name: Canay, Ezgi
name: Metcalf, Jacob M.
name: Brilenkov, Maksym
name: Zhuk, Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the effect of the cubic torus topology of the Universe on scalar cosmological perturbations which define the gravitational potential. We obtain three alternative forms of the solution for both the gravitational potential produced by point-like masses, and the corresponding force. The first solution includes the expansion of delta-functions into Fourier series, exploiting periodic boundary conditions. The second one is composed of summed solutions of the Helmholtz equation for the original mass and its images. Each of these summed solutions is the Yukawa potential. In the third formula, we express the Yukawa potentials via Ewald sums. We show that for the present Universe, both the bare summation of Yukawa potentials and the Yukawa-Ewald sums require smaller numbers of terms to yield the numerical values of the potential and the force up to desired accuracy. Nevertheless, the Yukawa formula is yet preferable owing to its much simpler structure.
description: 14 pages, 4 figures and 2 tables