cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Phase-Space analysis of Teleparallel Dark Energy
Creators: name: Xu, Chen
name: Saridakis, Emmanuel N.
name: Leon, Genly
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We perform a detailed dynamical analysis of the teleparallel dark energy scenario, which is based on the teleparallel equivalent of General Relativity, in which one adds a canonical scalar field, allowing also for a nonminimal coupling with gravity. We find that the universe can result in the quintessence-like, dark-energy-dominated solution, or to the stiff dark-energy late-time attractor, similarly to standard quintessence. However, teleparallel dark energy possesses an additional late-time solution, in which dark energy behaves like a cosmological constant, independently of the specific values of the model parameters. Finally, during the evolution the dark energy equation-of-state parameter can be either above or below -1, offering a good description for its observed dynamical behavior and its stabilization close to the cosmological-constant value.
description: 23 pages, 4 figures, 5 tables, version published at JCAP
Variational properties and orbital stability of standing waves for NLS equation on a star graph
Creators: name: Adami, R.
name: Cacciapuoti, C.
name: Finco, D.
name: Noja, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35Q55, 81Q35, 37K40

description: We study standing waves for a nonlinear Schrödinger equation on a star graph {$\mathcal{G}$} i.e. $N$ half-lines joined at a vertex. At the vertex an interaction occurs described by a boundary condition of delta type with strength $α\leqslant 0$. The nonlinearity is of focusing power type. The dynamics is given by an equation of the form $ i \frac{d}{dt}Ψ_t = H Ψ_t - | Ψ_t |^{2μ} Ψ_t $, where $H$ is the Hamiltonian operator which generates the linear Schrödinger dynamics. We show the existence of several families of standing waves for every sign of the coupling at the vertex for every $ω> \frac{α^2}{N^2}$. Furthermore, we determine the ground states, as minimizers of the action on the Nehari manifold, and order the various families. Finally, we show that the ground states are orbitally stable for every allowed $ω$ if the nonlinearity is subcritical or critical, and for $ω
description: 36 pages, 2 figures, final version appeared in JDE
title: Mit großer Macht kommt große Verantwortung -- Grundüberlegungen zur Ethik für UUX-Professionals
Creators: name: Balthasar, Mandy
name: Schiffhauer, Birte
name: Schuler, Selina
name: Harhues, Simon
name: Lutsch, Clemens
name: Winter, Dominique
name: Preussner, Adrian
Publisher: name: Gesellschaft für Informatik e.V. und German UPA e.V.
Year: 2021
Subjects: subject: Ethik
subject: menschzentrierte Gestaltung
subject: Mensch-Computer-Interaktion
subject: User Experience
subject: Usability

description: Die Tragweite von Entscheidungen im Bereich Usability und User Experience (UUX) bleibt häufig im Dunkeln und dies obwohl deren Konsequenzen unsere visuelle Welt wie kaum eine andere Branche prägt. Ein Einfluss von Design auf Denken, Fühlen und Handeln des Menschen ist gewünscht, welche Richtung der Einfluss nimmt, kann bereits während des Entstehungsprozesses entschieden werden. Daher spielen Fragen der Ethik im Berufsalltag von UUX-Professionals eine besondere Rolle, gleichwohl sind die Grundlagen der Ethik nicht allen Entscheider*innen bewusst oder bekannt. In diesem Beitrag werden ethische Perspektiven und Beispiele im Anwendungsbereich der menschzentrierten Gestaltung aufgeführt. Ein Überblick über grundlegende theoretische Strömungen der Ethik, bestehende Richtlinien und Praktiken, hilft bei einem Einstieg in ein Themenfeld, welches im Rahmen eines Workshops auf der Mensch und Computer 2021 vertieft werden soll.
Torsion, an alternative to the cosmological constant?
Creators: name: Schucker, Thomas
name: Tilquin, Andre
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We confront Einstein-Cartan's theory with the Hubble diagram and obtain a negative answer to the question in the title. Contrary findings in the literature seem to stem from an error in the field equations.
description: 10 pages, 1 figure. Version 2 corrects a factor 3 in Cartan's equations to become 2
title: Usability stumm geschaltet? Usable Security und Privacy in Videokonferenzsystemen
Creators: name: Balthasar, Mandy
name: Gerber, Nina
name: Schmitt, Hartmut
Publisher: name: Gesellschaft für Informatik e.V. und German UPA e.V.
Year: 2022
Subjects: subject: Communications
subject: CSCW
subject: Enterprise
subject: Privacy
subject: Security
subject: Usability
subject: Video/Audio Conferencing

description: Unter Druck von außen durch die COVID-19-Pandemie erfuhren Unternehmen weltweit einen Aufschwung in der Nutzungsbilanz von Werkzeugen für computergestützte Gruppenarbeit. Die sogenannte Computer Supported Cooperative Work (CSCW) ermöglichte trotz Kontaktbeschränkungen die Arbeit in Gruppen durch digitale Informations- und Kommunikationstechnologien. Aufgrund einer Notlage schnell in den Arbeitsprozess integriert, wurden erst im Anschluss Schwächen im Bereich IT-Sicherheit und Datenschutz ersichtlich. Ebenso der hohen Integration verschiedener Werkzeuge in den Arbeitsalltag geschuldet sind Schwächen in der Usability. So bieten beispielsweise Videokonferenzsysteme Hürden bei der Bedienbarkeit, welche wiederum zu Lücken in der IT-Sicherheit bzw. dem Datenschutz von Unternehmen führen können. Doch welche Trends im Bereich Videokonferenzsysteme gibt es? Welche sicherheits- und privatheitsfördernde Empfehlungen werden für die Usability gegeben? Und wo liegen einzelne Defizite für Usable Security & Privacy von Videokonferenzsystemen? Dieser Beitrag soll erste Antworten auf diese Fragestellungen geben, welche in einem Workshop auf der Mensch und Computer 2021 gemeinsam mit den Teilnehmer:innen näher betrachtet werden.Unter Druck von außen durch die COVID-19-Pandemie erfuhren Unternehmen weltweit einen Aufschwung in der Nutzungsbilanz von Werkzeugen für computergestützte Gruppenarbeit. Die sogenannte Computer Supported Cooperative Work (CSCW) ermöglichte trotz Kontaktbeschränkungen die Arbeit in Gruppen durch digitale Informations- und Kommunikationstechnologien. Aufgrund einer Notlage schnell in den Arbeitsprozess integriert, wurden erst im Anschluss Schwächen im Bereich IT-Sicherheit und Datenschutz ersichtlich. Ebenso der hohen Integration verschiedener Werkzeuge in den Arbeitsalltag geschuldet sind Schwächen in der Usability. So bieten beispielsweise Videokonferenzsysteme Hürden bei der Bedienbarkeit, welche wiederum zu Lücken in der IT-Sicherheit bzw. dem Datenschutz von Unternehmen führen können. Doch welche Trends im Bereich Videokonferenzsysteme gibt es? Welche sicherheits- und privatheitsfördernde Empfehlungen werden für die Usability gegeben? Und wo liegen einzelne Defizite für Usable Security & Privacy von Videokonferenzsystemen? Dieser Beitrag soll erste Antworten auf diese Fragestellungen geben, welche in einem Workshop auf der Mensch und Computer 2021 gemeinsam mit den Teilnehmer:innen näher betrachtet werden.
Vector Nonlinear Schrödinger Equation on the half-line
Creators: name: Caudrelier, V.
name: Zhang, Q. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We investigate the Manakov model or, more generally, the vector nonlinear Schrödinger equation on the half-line. Using a Bäcklund transformation method, two classes of integrable boundary conditions are derived: mixed Neumann/Dirichlet and Robin boundary conditions. Integrability is shown by constructing a generating function for the conserved quantities. We apply a nonlinear mirror image technique to construct the inverse scattering method with these boundary conditions. The important feature in the reconstruction formula for the fields is the symmetry property of the scattering data emerging from the presence of the boundary. Particular attention is paid to the discrete spectrum. An interesting phenomenon of transmission between the components of a vector soliton interacting with the boundary is demonstrated. This is specific to the vector nature of the model and is absent in the scalar case. For one-soliton solutions, we show that the boundary can be used to make certain components of the incoming soliton vanishingly small. This is reminiscent of the phenomenon of light polarization by reflection.
description: 23 pages, 5 figures, some clarifications in propositions 3.1 and 3.2, added appendix with detailed comparison between linear and nonlinear cases. Accepted in J. Phys. A
La foresta tropicale come paradiso perduto: Green Mansions di W.H. Hudson
Creators: name: Brazzelli, Nicoletta
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: foresta pluviale; paradiso perduto; Sud America; W.H. Hudson; romance ecologico

description: In W.H. Hudson’s Green Mansions (1904) the mysterious and enchanting quality of the natural world is represented through the writer’s powerful imagination, and the exotic landscape of the South American rainforest is related to British territorial expansion: according to a long-standing literary tradition, the European colonial desire is projected onto remote, unknown places. On the one hand, the pristine forest appears a pure space, a site unspoiled by colonial expansion, the primitive and sacred world nourishing Western exotic dreams. On the other hand, by revisiting the myth of the lost paradise, Hudson conveys the late nineteenth-early twentieth century European perception of the tropical world, a patchwork of Charles Darwin’s theories, Biblical echoes and colonial ideology. Abel surrenders to the influence of the wild, ventures into the weird and entangled forest, seemingly refusing male invasion and domination. Rima’s subsequent death symbolizes the ecological catastrophe brought about by the Europeans in the primitive world of South America: the feathered bird-girl is assimilated to an Edenic being at the mercy of destructive forces. At the same time, Abel’s wish to possess the land reinforces the colonial viewpoint of the narration, while the movement from civilization to the wilderness implies the representation of a Darwinian struggle. Hudson frames the tropical space as substantially ambiguous, attractive and destructive for both colonizers and colonized, and through his narrative he introduces the fear of natural loss in the extreme form of the extinction of the green world.
description: Altre Modernità, No 7 (2012): Paradisi
A Berger-type theorem for metric connections with skew-symmetric torsion
Creators: name: Reggiani, Silvio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C30, 53C35

description: We prove a Berger-type theorem which asserts that if the orthogonal subgroup generated by the torsion tensor (pulled back to a point by parallel transport) of a metric connection with skew-symmetric torsion is not transitive on the sphere, then the space must be locally isometric to a Lie group with a bi-invariant metric or its symmetric dual (we assume the space to be locally irreducible). We also prove that a (simple) Lie group with a bi-invariant metric admits only two flat metric connections with skew-symmetric torsion: the two flat canonical connections. In particular, we get a refinement of a well-known theorem by Cartan and Schouten. Finally, we show that the holonomy group of a metric connection with skew-symmetric torsion on these spaces generically coincides with the Riemannian holonomy.
description: 13 pages; we add some new examples and fix minor misprints; final version to appear in Journal of Geometry and Physics
Surface roughness interpretation of 730 kg days CRESST-II results
Creators: name: Kuźniak, M.
name: Boulay, M. G.
name: Pollmann, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The analysis presented in the recent publication of the CRESST-II results finds a statistically significant excess of registered events over known background contributions in the acceptance region and attributes the excess to a possible Dark Matter signal, caused by scattering of relatively light WIMPs. We propose a mechanism which explains the excess events with ion sputtering caused by 206Pb recoils and alpha particles from 210Po decay, combined with realistic surface roughness effects.
description: 15 pages, 6 figures. v2: corrected quenching factor discussion. v3: corrected references. v4: added references
Essays on the dynamics of mergers and acquisitions
Creators: name: Moran-Villar, Pablo Christian
Publisher: name: University of British Columbia
Year: 2013

description: In this thesis, I present three essays on the interaction of two dynamic aspects of mergers and acquisitions. First, merger activity follows waves within industries over time. Second, acquirers' announcement returns are on average small and decline within merger waves. In the first essay, I develop a model of merger waves to study the interplay between merger timing and market anticipation of deal announcements. I show that the pattern of small and declining announcement returns for acquirers in merger waves is consistent with the notion that the market learns over time and is thus able to better anticipate deal announcements. This explanation contrasts with existing theories which attribute the declining pattern in announcement returns to a decline in deal quality. The model delivers several predictions about time-series and cross-section aspects of acquirers' stock returns during merger wave episodes. In the second essay, I test a set of the model's predictions. As a testing laboratory, I use four industries that underwent merger deregulations in the 1990s. Consistent with existing theories, high quality deals tend to be announced early in a merger wave. However, I show that this pattern in deal quality does not explain the declining pattern in acquirers' announcement effects. Consistent with the model's predictions, I find that what matters for this pattern is the unexpected portion of deal timing. I also find evidence of contagion effects on acquirers' peers that is consistent with the information channel in the model. In the third essay, I study the drivers of merger waves by examining the allocation of equity proceeds raised at times of high merger activity. My results indicate that firms do not systematically increase debt repayment or equity payout with equity proceeds raised in high merger years. This pattern does not conform with the view that managers believe the stock is overvalued at the time of the equity issue. Instead, the observed pattern of proceeds allocation is consistent with the existence of time-varying adverse selection and investment lags. The evidence supports the idea that these frictions are important elements behind the dynamics of merger and acquisition activity.
title: DEPRECATED: The Adoption of Disabled Children
Creators: name: Bunt, Sarah
Publisher: name: University of Plymouth
Year: 2013
Subjects: Disability
Looked after children
Adoption
Social work
Disabled Children
Critical Realism

description: The research has set out to examine the motives that contribute towards the decision to adopt a disabled child. Increased knowledge about placing disabled children for adoption is particularly important as they are regarded as the category hardest to place (Adoption Register 2009). Despite the wide gaps in knowledge, the negativity associated with the social construction of disability has been seen as a cause of disabled children’s disadvantage (Cousins 2009). Synthesising a Critical Realist framework with Grounded Theory methods; to examine both the efforts of local authorities to place a disabled child for adoption, as well as the narratives of those adopters who take on disabled child. The findings reveal that social workers often take a tentative approach to placing a disabled child, which impacts upon adoption outcomes, both in the way they represent disabled children and in the way they recruit and assess adopters. The Rationalistic Habitus is a concept used to reflect the way social workers reason their way through particular issues before arriving at a practice judgement. The study, also examines the narratives of adopters and their journey through the process of adopting a child with a significant impairment. Instances where adopters embark on adopting a disabled child are significant because they are making a decision in opposition to a prevailing discourse where disabled children are conceptualised as a burden to their families (Jordan and Sales 2007). An examination of these adopter’s motives requires one to think more deeply about how motives are processed. By focusing on the Habitus and reflexivity this research has attempted to bring new insights into how people process the prospect of becoming a parent to a disabled child. However, while the decision to adopt a disabled child might appear unconventional it is not so abnormal that we cannot make sense of their motives. The lifelong nature of the adoption role demonstrates that commitment is at the heart of these adoptions. The notion of a Commitment Habitus is reflected when adopters express an innate drive to nurture. In effect, this research contends that the motive to adopt a disabled child is wrapped in an orientation to invest in social relationships.
“Maurice est si loin qu’on ne peut qu’en rêver”: le Paradis perdu de J.M.G. Le Clézio entre mythe et mémoire
Creators: name: Mootoosamy, Vidoolah
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: “Le Clézio”; “Paradis terrestre”; “Ile Maurice”; “Mémoire familiale” ; “Mythe Biblique”;

description: The theme of paradise or better the paradise lost, understood as the Garden of Eden where natural harmony, innocence and principles of liberty reigned, is developed by the writer J.M.G. Le Clézio with a certain obsession. Different within his work are the geographical points which from time to time adapt to represent this topos; but one in particular repeats consistently: it is the island of Mauritius. A curious relationship unites the author to this island – from which his parents and relatives were unjustly exiled – beginning from the typical Mauritian education he received, even though born and grown up in France. The feeling with which Le Clézio approaches the island, until today by the majority considered a paradise on Earth, differs indeed from the search of an exotic place  (even though his novels do not miss descriptions of breathtaking landscapes and pure nature) and it identifies itself as a contemplation of the homeland – cradle to which he and his family remained bound despite the forced distance. Starting by detecting some factors that various Leclezian novels have in common, this article offers itself to bring to light an attempt of the author to regain through writing his own Mauritian paradise. A research which passes for Le Clézio as will be seen across a miscellanea of elements of a Biblical myth involved in the genesis of man with stories, memories, dreams and family hopes.
description: Altre Modernità, No 7 (2012): Paradisi
Multisetting Bell inequalities for $N$ spins-1 avoiding KS contradiction
Creators: name: Dutta, Arijit
name: Wieśniak, Marcin
name: Żukowski, Marek
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Bell's theorem for systems more complicated than two qubits faces a hidden, as yet undiscussed, problem. One of the methods to derive Bell's inequalities is to assume existence of joint probability distribution for measurement results for all settings in the given experiment. However for spins-1, one faces the problem that eigenvalues of observables do not allow a consistent algebra if one allows all possible settings on each side (Bell 1966 contradiction), or some specific sets (leading to a Kochen-Specker 1967 contradiction). We show here that by choosing special set of settings which never lead to inconsistent algebra of eigenvalues, one can still derive multisetting Bell inequalities, and that they are robustly violated. Violation factors increase with the number of subsystems. The inequalities involve only spin observables, we do not allow all possible qutrit observables, still the violations are strong.
description: 6 pages, 4 figures, Published version, Phys. Rev. A 86, 032111
“A purgatory of clichés”: Elizabeth Costello and the Impossible Paradise for Writers
Creators: name: Mosca, Valeria
Publisher: name: Università degli  Studi di Milano
Year: 2012

description: “At the gate” is the closing piece in J. M. Coetzee’s collection of short stories Elizabeth Costello (2003). It depicts Costello, fictitious novelist and prominent character in Coetzee’s late production, and the Kafkaesque waiting-room for Paradise she finds herself in.
The first aim of this essay is an exploration of this ambiguous afterlife: surprisingly and disappointingly mundane, it defies traditional expectations. Costello’s afterlife is also a meta-literary construct, and explicitly so. It displays itself as a purgatory of clichés and poor literary imitations, and thus allows Coetzee to expose the limits of literary representation.
Costello stands before a gate to Paradise; she is required a statement of belief to pass through, but she feels unable to provide it. She is a writer and, as such, maintains beliefs only provisionally. More than once, though, she is confronted with the idea that having beliefs is what makes us humans. The resulting division between the human and the writing self, and the impossibility of Paradise for the latter, are dealt with in the second part of this essay.
Identity and its persistence are central themes in Coetzee's works. In the last part of this essay, "At the Gate" is compared to some of them – most notably, to some sections of Diary of a Bad Year (2007), since there, too, the main character is an author reasoning on the afterlife.
description: Altre Modernità, No 7 (2012): Paradisi
Paraísos ‘barrosos’: el éxtasis como foco central de la poética de Néstor Perlongher
Creators: name: Balletta, Edoardo
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: misticismo; Santo Daime; neobarroco; Perlongher Néstor

description: The last period of Perlongher’s poetry has been considered with some ‘concern’ by criticswho have read the poet's interest in mysticism (especially the cult of the Santo Daime) as a consequence of the abrupt change in his life due to the discovery of seropositivity and, therefore, the impossibility of continuing with sexuality as an instrument of liberation and transcendence. Consequently his latter production (Aguas Aereas, El chorreo de las iluminaciones, El Auto Sacramental) has been considered in the line of ‘discontinuity’.
In this essay, on the contrary, I propose a reading of Perlongher’s mystical production based on the  idea of  continuity with his previous works to show how this perspective can help the critics to focus more clearly the core of his poetical experience.
description: Altre Modernità, No 7 (2012): Paradisi
title: DEPRECATED: Communicating Marine Environmental Health: Connecting Science, Social and Policy Values
Creators: name: Jefferson, Rebecca Louise
Publisher: name: University of Plymouth
Year: 2010

description: Human activities are degrading marine ecosystems and undermining the ecological functions and processes which provide valued goods and services. European and UK marine policy developments aim to implement the Ecosystem Approach to support better management of activities and maintain the health of regional seas. Current public perceptions of the UK marine environment are overwhelmingly negative, creating a barrier to engaging society with marine environmental issues and policy. This thesis conducts a study of the attributes of a suite of 72 UK marine species to identify those which contribute most to marine ecological health. The findings show that structurally complex species are most important and are recommended as species to assess and monitor Good Environmental Status as defined by the EU Marine Strategy Framework Directive. Existing conservation policies are biased towards large vertebrate species, with ecologically important species being underprotected. A survey of public perceptions of the marine environment. revealed conflicting perceptions of charismatic megafauna. Charismatic species were the most interesting species but least important as measures of marine health. Ecologically important species were the least interesting, but ecological health concepts were considered important measures of marine health. Perceptions of the marine environment varied with socio-demographic and social value factors. By integrating these studies, barriers and opportunities to engaging society with the marine environment were identified. Communication strategies which address these are proposed, including a suite of Spokes Species, potential high profile species to champion the marine environment. These include puffin, cod, basking shark and seagrass. A series of themes are proposed which implement other key findings such as the importance of personal experience in building connections with marine species. Communication strategies are supported by ecologically defined assessments of marine environmental health, are relevant to current policy developments and will resonate with social values of the marine environment.
Graham Greene’s real and imaginary French Riviera
Creators: name: Gallix, François
Publisher: name: Università degli  Studi di Milano
Year: 2012

description: After living mostly in residential districs : St James’s street, Albany in  London, bd. Malesherbes in Paris, Capri where he had bought a house why did Graham Greene decide to spend almost twenty years, from 1966 to 1990, in the small French provincial town of Antibes ? The first answers, given by Greene himself are part of those “clouds of smoke“ that he created all his life so as to remain out of the public eye : health problems (he had had a bad pneumonia in Moscow, but had recovered long ago and lived until the age of eighty-six), the proximity in Juan les Pins of Yvonne Cloetta, the French married woman he had met in 1959 and who was his last loving companion.
 The reality is to be found in Greene’s answer to  a letter from Evelyn Waugh, written  in January 1966 to congratulate him for being made a Companion of Honour by the Queen and to thank him for sending him an inscribed copy of his novel, The Comedians. Greene wrote back  on January 5th : “1965 was bad for me too. Someone like Jones [in The Comedians], claiming a CBE did away with all my savings so I’ve had to leave England and establish myself in France.“
description: Altre Modernità, No 7 (2012): Paradisi
Dynamical Symmetry Breaking with Four-Superfield Interactions
Creators: name: Faisel, Gaber
name: Jung, Dong-Won
name: Kong, Otto C. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the dynamical mass generation resulted from interaction terms with four chiral superfields. The kind of interactions maybe considered a supersymmetric generalization of the four-fermion interactions of the classic Nambu--Jona-Lasinio model. A four-superfield interaction that contains a four-fermion interaction as one of its component terms has been the standard supersymmetrization of the NJL model for decades. Recently, we introduced a holomorphic variant with a dimension five interaction term instead. The latter is a main target of the present analysis. With the introduction of a new perspective on the superfield gap equation, we derive it for each one of the four-superfield interactions, using the supergraph technique. Through analyzing solutions to the gap equations, we illustrate the dynamical generation of superfield Dirac mass, including a supersymmetry breaking part. A dynamical symmetry breaking generally goes along with the dynamical mass generation, for which a bi-superfield condensate is responsible. The explicit illustration of dynamical symmetry breaking from the holomorphic dimension five interaction is reported for the first time. It has rich and novel features, which would be easily missed without the superfield approach developed here. We also discuss the nature of the bi-superfield condensate and its role of the effective Higgs superfield picture for both cases, illustrating their difference. Note that such a holomorphic quark superfield interaction term can successful account for the electroweak symmetry breaking with Higgs superfields as composites.
Ondate in successione. Per un barocco americano: Lezama Lima e l’avventura dell’immaginario
Creators: name: Varanini, Francesco
Publisher: name: Università degli  Studi di Milano
Year: 2012

description: Ondate in successione. Per un barocco americano: Lezama Lima e l’avventura dell’immaginario
  (Nota a: Lezama Lima, Paradiso, a cura di C. Vitier, Colección Archivos, ALLCA, Madrid, 1988; trad. it. a cura di G. Felici, Torino, Einaudi, 1995)
description: Altre Modernità, No 7 (2012): Paradisi
Dante e il Paradiso (artificiale): il nuovo Dante di Barbara Reynolds
Creators: name: Caponi, Paolo
Publisher: name: Università degli  Studi di Milano
Year: 2012

description: Dante e il Paradiso (artificiale):
 il nuovo Dante di Barbara Reynolds

  (Barbara Reynolds, Dante. La vita e l’opera, traduzione di Alessio Catania,
 Milano, Longanesi, 2007, pp. 505, ISBN 078-88-304-2436-4)
description: Altre Modernità, No 7 (2012): Paradisi
Analytical solutions to the spin-1 Bose-Einstein condensates
Creators: name: Zhang, Zhi-Hai
name: Zhang, Cong
name: Yang, Shi-Jie
name: Feng, Shiping
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We analytically solve the one-dimensional coupled Gross-Pitaevskii equations which govern the motion of F=1 spinor Bose-Einstein condensates. The nonlinear density-density interactions are decoupled by making use of the unique properties of the Jacobian elliptical functions. Several types of complex stationary solutions are deduced. Furthermore, exact non-stationary solutions to the time-dependent Gross-Pitaevskii equations are constructed by making use of the spin-rotational symmetry of the Hamiltonian. The spin-polarizations exhibit kinked configurations. Our method is applicable to other coupled nonlinear systems.
description: 12 figures
Efficient simulation of Grassmann Tensor Product States
Creators: name: Gu, Zheng-Cheng
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently, the Grassmann-tensor-entanglement renormalization group(GTERG) approach was proposed as a generic variational approach to study strongly correlated boson/fermion systems. However, the weakness of such a simple variational approach is that generic Grassmann tensor product states(GTPS) with large inner dimension $D$ will contain a large number of variational parameters and be hard to be determined through usual minimization procedures. In this paper, we first introduce a standard form of GTPS which significantly simplifies the representations. Then we describe a simple imaginary-time-evolution algorithm to efficiently update the GTPS based on the fermion coherent state representation and show all the algorithm developed for usual tensor product states(TPS) can be implemented for GTPS in a similar way. Finally, we study the environment effect for the GTERG approach and propose a simple method to further improve its accuracy. We demonstrate our algorithms by studying a simple 2D free fermion system on honeycomb lattice, including both off-critical and critical cases.
description: 13 pages,15 figures,publisehd version(an interacting fermion example is added)
Madri cattive: ne esistono altre?
Creators: name: Bignami, Marialuisa
Publisher: name: Università degli  Studi di Milano
Year: 2012

description: Madri cattive: ne esistono altre?
   (Nicoletta Vallorani, Madri cattive, Milano, Salani, 2011, p. 272, EAN 9788862562058)
description: Altre Modernità, No 7 (2012): Paradisi
Some qualitative properties of the solutions of the Magnetohydrodynamic equations for nonlinear bipolar fluids
Creators: name: Razafimandimby, Paul Andre
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this article we study the long-time behaviour of a system of nonlinear Partial Differential Equations (PDEs) modelling the motion of incompressible, isothermal and conducting modified bipolar fluids in presence of magnetic field. We mainly prove the existence of a global attractor denoted by $\A$ for the nonlinear semigroup associated to the aforementioned systems of nonlinear PDEs. We also show that this nonlinear semigroup is uniformly differentiable on $\A$. This fact enables us to go further and prove that the attractor $\A$ is of finite-dimensional and we give an explicit bounds for its Hausdorff and fractal dimensions.
description: The final publication is available at Springer via http://dx.doi.org/10.1007/s10440-014-9964-2
Bernardo Subercaseaux, Historia de las ideas y de la cultura en Chile. Desde la Independencia hasta el Bicentenario
Creators: name: Borri, Claudia
Publisher: name: Università degli  Studi di Milano
Year: 2012

description: Bernardo Subercaseaux,
 Historia de las ideas y de la cultura en Chile.
 Desde la Independencia hasta el Bicentenario
 (3 voll., Editorial Universitaria, Santiago 2011)
description: Altre Modernità, No 7 (2012): Paradisi
On the representation of "gene function" in databases
Creators: name: Ashburner, Michael
Publisher: name: Zenodo
Year: 1998

description: One of the major challenges facing genomic research today is that of integrating sequence data with the vast, and growing, body of data from functional analyses of genes. One step towards meeting this challenge is to design an ontology to represent gene function, and to implement this within a genomic database.
description: This document is an historical preservation and was created as a direct port (only adjusting spaces, fonts, and pagination) of a copy of a document found at http://biomirror.aarnet.edu.au/biomirror/geneontology/docs/gene_ontology_discussion.html on 2021-09-08. This upstream mirrored document itself was created by an automated process copying the GO website (http://geneontology.org) in October 2003.
Developmental changes in the properties of mouse mammary stem cells
Creators: name: Makarem, Maisam
Publisher: name: University of British Columbia
Year: 2013

description: Recent findings have suggested that the normal breast is a hierarchically organized tissue in which differentiated cells incapable of further division are continuously produced from a common, self-sustaining stem cell population. However, little is known about the origin, timing or properties of mammary stem cells during development. In some tissues, cells with tissue-specific stem cell properties are known to develop after the first recognizable tissue elements are in place, and these early stem cells also have qualitatively different properties than their adult counterparts. I hypothesized that this would also be true of the mammary gland. I therefore designed a series of experiments to identify, isolate and characterize mammary stem cells when they first appear during development. I also established robust in vitro and in vivo systems to enable their growth and regenerative potential to be compared with that of similarly assessed adult mammary stem cells. I found that a reproducibly detectable mammary stem cell population with transplantable regenerative activity is first detected late in gestation after the early mammary bud is formed. This population then expands in parallel with a more prevalent population detectable as cells with clonogenic activity in vitro. I also discovered that single EpCAM⁺ fetal mammary epithelial cells in semi-solid Matrigel cultures supplemented with added irradiated fibroblasts have a direct and inducible but highly variable growth and regenerative potential that is, nevertheless greater on average than that of their adult counterparts. Analysis of the 4-week regenerative activity of fetal as compared to adult mammary epithelial cells in vivo also indicated an increased output of total cells and clonogenic progenitors from the fetal cells, again with marked variation in this assay. Analysis of published gene expression profiles of fetal and adult mammary enriched stem cell subsets have suggested a number of changes in the external cues that govern their responses as well as the intrinsic molecular network they use to execute these responses. Further elucidation of developmentally-determined changes in the properties of mammary stem cells are likely to be important in understanding perturbations of adult mammary cells that endow them with malignant properties.
Eigenvector dynamics: general theory and some applications
Creators: name: Allez, Romain
name: Bouchaud, Jean-Philippe
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: Risk Management (q-fin.RM)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Economics and business

description: We propose a general framework to study the stability of the subspace spanned by $P$ consecutive eigenvectors of a generic symmetric matrix ${\bf H}_0$, when a small perturbation is added. This problem is relevant in various contexts, including quantum dissipation (${\bf H}_0$ is then the Hamiltonian) and financial risk control (in which case ${\bf H}_0$ is the assets return covariance matrix). We argue that the problem can be formulated in terms of the singular values of an overlap matrix, that allows one to define a "fidelity" distance. We specialize our results for the case of a Gaussian Orthogonal ${\bf H}_0$, for which the full spectrum of singular values can be explicitly computed. We also consider the case when ${\bf H}_0$ is a covariance matrix and illustrate the usefulness of our results using financial data. The special case where the top eigenvalue is much larger than all the other ones can be investigated in full detail. In particular, the dynamics of the angle made by the top eigenvector and its true direction defines an interesting new class of random processes.
description: 40 pages; 12 figures
Художня металообробка у Києві в Х ст
Creators: name: Орлов, Руслан
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 430101
subject: Archaeological science

description: Орлов Р.С. Художня металообробка у Києві в Х ст — Археологія, 1983, №42, с.28-41.Artistic metalworking in Kyiv in the 10th century
The critical fugacity for surface adsorption of self-avoiding walks on the honeycomb lattice is $1+\sqrt{2}$
Creators: name: Beaton, Nicholas R.
name: Bousquet-Mélou, Mireille
name: de Gier, Jan
name: Duminil-Copin, Hugo
name: Guttmann, Anthony J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In 2010, Duminil-Copin and Smirnov proved a long-standing conjecture of Nienhuis, made in 1982, that the growth constant of self-avoiding walks on the hexagonal (a.k.a. honeycomb) lattice is $μ=\sqrt{2+\sqrt{2}}.$ A key identity used in that proof was later generalised by Smirnov so as to apply to a general O(n) loop model with $n\in [-2,2]$ (the case $n=0$ corresponding to SAWs). We modify this model by restricting to a half-plane and introducing a surface fugacity $y$ associated with boundary sites (also called surface sites), and obtain a generalisation of Smirnov's identity. The critical value of the surface fugacity was conjectured by Batchelor and Yung in 1995 to be $y_{\rm c}=1+2/\sqrt{2-n}.$ This value plays a crucial role in our generalized identity, just as the value of growth constant did in Smirnov's identity. For the case $n=0$, corresponding to \saws\ interacting with a surface, we prove the conjectured value of the critical surface fugacity. A crucial part of the proof involves demonstrating that the generating function of self-avoiding bridges of height $T$, taken at its critical point $1/μ$, tends to 0 as $T$ increases, as predicted from SLE theory.
description: Major revision, references updated, 25 pages, 13 figures
Additional file 1 of The application of laparoscopy combined with indocyanine green fluorescence imaging technique for hepatic cystic echinococcosis
Creators: name: Li, Yu-Peng
name: Ma, Zhi-Gang
name: Tuxun, Tuerhongjiang
name: Li, Zhi-De
name: Meng, Yuan
name: Chen, Xiong
Publisher: name: figshare
Year: 2020
Subjects: Biochemistry
Space Science
Medicine
Chemical Sciences not elsewhere classified
Virology

description: Additional file 1. Additional clinical information.
A new Skyrme interaction with improved spin-isospin properties
Creators: name: Roca-Maza, X.
name: Colo', G.
name: Sagawa, H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A correct determination of the spin-isospin properties of the nuclear effective interaction should lead, among other improvements, to an accurate description of the Gamow-Teller Resonance (GTR). These nuclear excitations impact on a variety of physical processes: from the response in charge-exchange reactions of nuclei naturally present in the Earth, to the description of the stellar nucleosynthesis, and of the pre-supernova explosion core-collapse evolution of massive stars in the Universe. A reliable description of the GTR provides also stringent tests for neutrinoless double-$β$ decay calculations. We present a new Skyrme interaction as accurate as previous forces in the description of finite nuclei and of uniform matter properties around saturation density, and that account well for the GTR in ${}^{48}$Ca, ${}^{90}$Zr and ${}^{208}$Pb, the Isobaric Analog Resonance and the Spin Dipole Resonance in ${}^{90}$Zr and ${}^{208}$Pb.
description: Predictions on the IAR and SDR and comparison with the SGII interaction for the GTRs where added
Smeared spin-flop transition in random antiferromagnetic Ising chain
Creators: name: Timonin, P. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: At T = 0 and a sufficiently large field, the nearest-neighbor antiferromagnetic Ising chain undergoes a first-order spin-flop transition into the ferromagnetic phase. We consider its smearing under the random-bond disorder such that all independent random bonds are antiferromagnetic (AF). It is shown that it can be described exactly for arbitrary distribution of AF bonds P(J). Moreover, the site magnetizations of finite chains can be found analytically in this model. We consider continuous P(J) which is zero above some -J_1 and behaves near it as (-J_1 - J)^λ, λ> -1. In this case ferromagnetic phase emerges continuously in a field H > H_c = 2J_1. At 0 > λ> -1 it has usual second-order anomalies near H_c with critical indices obeying the scaling relation and depending on λ. At λ> 0 the higher-order transitions appear (third, fourth etc.) marked by the divergence of corresponding nonlinear susceptibilities. In the chains with even number of spins the intermediate "bow-tie" phase with linearly modulated AF order exists between AF and ferromagnetic ones at J_1 < H < H_c. Its origin can be traced to the infinite correlation length of the degenerate AF phase from which it emerges. This implies the existence of similar inhomogeneous phases with size- and form-dependent order in a number of other systems with infinite correlation length. The possibility to observe the signs of "bow-tie" phase in low-T neutron diffraction experiments is discussed.
description: 18 pages, 6 figures, published version
Researchers and scientists love data management. Huh?
Creators: name: Stall, Shelley
Publisher: name: Zenodo
Year: 2016
Subjects: Metadata
FAIR Data

description: Presented at ESIP Summer Meeting 2016 during the Research as Art session. Abstract There is general agreement that managing your research data is important. There is good support for post docs or curation teams putting in the time to prepare the data for the repository. But, it’s not a common belief that everyone has a role to play in data management starting with the researcher. How can we change the value we place on data management. How can we embrace the importance of data management practices throughout the lifecycle. How can we convince our research community to love data management?
Sterile neutrinos and indirect dark matter searches in IceCube
Creators: name: Arguelles, Carlos A.
name: Kopp, Joachim
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: If light sterile neutrinos exist and mix with the active neutrino flavors, this mixing will affect the propagation of high-energy neutrinos from dark matter annihilation in the Sun. In particular, new Mikheyev-Smirnov-Wolfenstein resonances can occur, leading to almost complete conversion of some active neutrino flavors into sterile states. We demonstrate how this can weaken IceCube limits on neutrino capture and annihilation in the Sun and how potential future conflicts between IceCube constraints and direct detection or collider data might be resolved by invoking sterile neutrinos. We also point out that, if the dark matter--nucleon scattering cross section and the allowed annihilation channels are precisely measured in direct detection and collider experiments in the future, IceCube can be used to constrain sterile neutrino models using neutrinos from the dark matter annihilation.
description: 13 pages, 5 figures; v2: minor corrections and improvements to numerical results, added section about dependence of IceCube limits on sterile neutrino parameters; v3: minor clarifications and additional references, matches published version
title: Preoperative imaging of malignant pancreatic tumors: a key determinant in assessing the resecability
Creators: name: Elkhadir, Kaoutar
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Neoplasia
subject: Metastases
subject: Cancer
subject: Diagnostic procedure
subject: Contrast agent-intravenous
subject: MR
subject: CT
subject: Pancreas
subject: Oncology
subject: Abdomen

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To highlight the high utility of cross sectional imaging (CT and MRI) in staging malignant pancreatic tumors in order to provide the optimal therapy for...