cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Letter from Kathleen Raine to Herbert Read, [1949?-1965?], [05]
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Philosophers, Modern
valueUri: http://id.worldcat.org/fast/1060765
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Read, Herbert, 1893-1968
valueUri: http://id.worldcat.org/fast/1754386
subject: Philosophers
valueUri: http://id.worldcat.org/fast/1060746
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Art historians
valueUri: http://id.worldcat.org/fast/815554
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Anarchists
valueUri: http://id.worldcat.org/fast/808401
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672

description: Part of a collection of correspondence from Kathleen Raine to Herbert Read. Raine was a British scholar and poet who was awarded the Queen’s Gold Medal for Poetry in 1992. The correspondence here follows Raine’s work on a book about William Blake’s mythology. Other topics include discussion of philosophical and metaphysical subjects, and references to acquaintances in literary and arts circles. In this letter, Raine recalls her recent visit with Read and asks if he knows of any literary opportunities for Scottish poet Edwin Muir who is coming to London.
Intrinsic Reduced Attitude Formation with Ring Inter-Agent Graph
Creators: name: Song, Wenjun
name: Markdahl, Johan
name: Zhang, Silun
name: Hu, Xiaoming
name: Hong, Yiguang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper investigates the reduced attitude formation control problem for a group of rigid-body agents using feedback based on relative attitude information. Under both undirected and directed cycle graph topologies, it is shown that reversing the sign of a classic consensus protocol yields asymptotical convergence to formations whose shape depends on the parity of the group size. Specifically, in the case of even parity the reduced attitudes converge asymptotically to a pair of antipodal points and distribute equidistantly on a great circle in the case of odd parity. Moreover, when the inter-agent graph is an undirected ring, the desired formation is shown to be achieved from almost all initial states.
The special growth history of central galaxies in groups and clusters
Creators: name: Nipoti, Carlo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences
subject: J.2
subject: 85A05

description: Central galaxies (CGs) in galaxy groups and clusters are believed to form and assemble a good portion of their stellar mass at early times, but they also accrete significant mass at late times via galactic cannibalism, that is merging with companion group or cluster galaxies that experience dynamical friction against the common host dark-matter halo. The effect of these mergers on the structure and kinematics of the CG depends not only on the properties of the accreted satellites, but also on the orbital parameters of the encounters. Here we present the results of numerical simulations aimed at estimating the distribution of merging orbital parameters of satellites cannibalized by the CGs in groups and clusters. As a consequence of dynamical friction, the satellites' orbits evolve losing energy and angular momentum, with no clear trend towards orbit circularization. The distributions of the orbital parameters of the central-satellite encounters are markedly different from the distributions found for halo-halo mergers in cosmological simulations. The orbits of satellites accreted by the CGs are on average less bound and less eccentric than those of cosmological halo-halo encounters. We provide fits to the distributions of the central-satellite merging orbital parameters that can be used to study the merger-driven evolution of the scaling relations of CGs.
description: 14 pages, 11 figures, accepted for publication in MNRAS. Minor changes with respect to previous version
Particles on the rotating channels in the wormhole metrics
Creators: name: Arsenadze, G.
name: Osmanov, Z.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In the Ellis-Bronnikov wormhole (WH) metrics the motion of a particle along curved rotating channels is studied. By taking into account a prescribed shape of a trajectory we derive the reduced $1+1$ metrics, obtain the corresponding Langrangian of a free particle and analytically and numerically solve the corresponding equations of motion. We have shown that if the channels are twisted and lag behind rotation, under certain conditions beads might asymptotically reach infinity, leaving the WH, which is not possible for straight co-rotating trajectories. The analytical and numerical study is performed for two and three dimensional cases and initial conditions of particles are analysed in the context of possibility of passing through the WH.
description: 12 pages, 7 figures
Transport of underdamped active particles in ratchet potentials
Creators: name: Ai, Bao-quan
name: Li, Feng-guo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the rectified transport of underdamped active noninteracting particles in an asymmetric periodic potential. It is found that the ratchet effect of active noninteracting particles occurs in a single direction (along the easy direction of the substrate asymmetry) in the overdamped limit. However, when the inertia is considered, it is possible to observe reversals of the ratchet effect, where the motion is along the hard direction of the substrate asymmetry. By changing the friction coefficient or the self-propulsion force, the average velocity can change its direction several times. Therefore, by suitably tailoring the parameters, underdamped active particles with different self-propulsion forces can move in different directions and can be separated.
description: 7 pages, 7 figures
Anyonic Chains, Topological Defects, and Conformal Field Theory
Creators: name: Buican, Matthew
name: Gromov, Andrey
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by the three-dimensional topological field theory / two-dimensional conformal field theory (CFT) correspondence, we study a broad class of one-dimensional quantum mechanical models, known as anyonic chains, that can give rise to an enormously rich (and largely unexplored) space of two-dimensional critical theories in the thermodynamic limit. One remarkable feature of these systems is the appearance of non-local microscopic "topological symmetries" that descend to topological defects of the resulting CFTs. We derive various model-independent properties of these theories and of this topological symmetry / topological defect correspondence. For example, by studying precursors of certain twist and defect fields directly in the anyonic chains, we argue that (under mild assumptions) the two-dimensional CFTs correspond to particular modular invariants with respect to their maximal chiral algebras and that the topological defects descending from topological symmetries commute with these maximal chiral algebras. Using this map, we apply properties of defect Hilbert spaces to show how topological symmetries give a handle on the set of allowed relevant deformations of these theories. Throughout, we give a unified perspective that treats the constraints from discrete symmetries on the same footing as the constraints from topological ones.
description: 54 pages and 17 figures; v2: reference added; preprint number added; appendix B of v1 has evolved into a separate publication
title:  A New Accountability for Cultural Organisations. The SoPHIA proposal to innovate Sustainability Reporting
Creators: name: Bollo, Alessandro
name: Cicerchia, Annalisa
name: Marucci , Flavia
name: Marchegiani , Lucia
name: Baioni  , Mauro
name: Marchiori , Michela
name: Demartini  , Paola
Publisher: name: Roma TrE-Press
Year: 2023

description: Cultural organizations, which are created to preserve, share and valorise cultural heritage, are one of the engines of sustainable development and resilience of local communities and they need adequate tools to link with their audience and, more generally, with their stakeholders. Against this background, in this paper we highlight the main contributions of the SoPHIA model to innovate the Sustainability Reporting of cultural organisations. Accountability is currently less developed by the institutions/organizations of the cultural sector and also poorly investigated by scholars. The application of the SoPHIA model to the SR of cultural organisations could feed the process of engagement with their stakeholders and meanwhile it may represent a cognitive tool for managers to reflect on the results of their work.

Le organizzazioni culturali, nate per preservare, condividere e valorizzare il patrimonio culturale, sono uno dei motori dello sviluppo sostenibile e della resilienza delle comunità locali e necessitano di strumenti adeguati per relazionarsi con il proprio pubblico e, più in generale, con i propri stakeholder. In questo contesto, il presente lavoro evidenzia i principali contributi del modello di valutazione d’impatto SoPHIA per innovare la rendicontazione di sostenibilità delle organizzazioni culturali. L'accountability è attualmente poco sviluppata dalle istituzioni/organizzazioni del settore culturale e poco indagata dagli studiosi. L'applicazione del modello SoPHIA al bilancio di sostenibilità delle organizzazioni culturali potrebbe alimentare il processo di coinvolgimento degli stakeholder e, nel contempo, rappresentare uno strumento conoscitivo per i manager per riflettere sui risultati ottenuti.
description: Cultural Heritage as a Trigger for Civic Wealth Creation and Sustainable Urban Development
End Point of the Ultraspinning Instability and Violation of Cosmic Censorship
Creators: name: Figueras, Pau
name: Kunesch, Markus
name: Lehner, Luis
name: Tunyasuvunakool, Saran
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We determine the end point of the axisymmetric ultraspinning instability of asymptotically flat Myers-Perry black holes in D = 6 spacetime dimensions. In the non-linear regime, this instability gives rise to a sequence of concentric rings connected by segments of black membrane on the rotation plane. The latter become thinner over time, resulting in the formation of a naked singularity in finite asymptotic time and hence a violation of the weak cosmic censorship conjecture in asymptotically flat higher-dimensional spaces.
description: Matches the published version. 4 pages plus references and supplemental material, 8 figures
The Standard Model Gauge Symmetry from Higher-Rank Unified Groups in Grand Gauge-Higgs Unification Models
Creators: name: Kojima, Kentaro
name: Takenaga, Kazunori
name: Yamashita, Toshifumi
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study grand unified models in the five-dimensional space-time where the extra dimension is compactified on $S^1/Z_2$. The spontaneous breaking of unified gauge symmetries is achieved via vacuum expectation values of the extra-dimensional components of gauge fields. We derive one-loop effective potentials for the zero modes of the gauge fields in SU(7), SU(8), SO(10), and $E_6$ models. In each model, the rank of the residual gauge symmetry that respects the boundary condition imposed at the orbifold fixed points is higher than that of the standard model. We verify that the residual symmetry is broken to the standard model gauge symmetry at the global minima of the effective potential for certain sets of bulk fermion fields in each model.
description: 34 pages, 1 figure, clarifications added in Sec. 6, published version
State-by-state emission spectra fitting for non-equilibrium plasmas: OH spectra of surface barrier discharge at argon/water interface
Creators: name: Voráč, Jan
name: Synek, Petr
name: Procházka, Vojtěch
name: Hoder, Tomáš
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Optical emission spectroscopy applied to non-equilibrium plasmas in molecular gases can give important information on basic plasma parameters, including the rotational, vibrational temperatures and densities of the investigated radiative states. In order to precisely understand the non-equilibrium of rotational-vibrational state distribution from investigated spectra without limiting presumptions, a state-by- state temperature-independent fitting procedure is the ideal approach. In this paper we present a novel software tool developed for this purpose, freely available for scientific community. The introduced tool offers a convenient way to construct Boltzmann plots even from partially overlapping spectra, in user-friendly environment. We apply the novel software to the challenging case of OH spectra in surface streamer discharges generated from the triple-line of argon/water/dielectrics interface. After the barrier discharge is characterised by ICCD and electrical measurements, the spatially and phase resolved rotational temperatures from N$_2$ (C-B) and OH(A-X) spectra are measured, analysed and compared. The precise analysis shows that OH(A) states with quantum numbers (v' = 0, 9 $\leq$ N' $\leq$ 13) are overpopulated with respect to the found two-Boltzmann distribution. We hypothesise that fast vibrational-energy transfer is responsible for this phenomenon observed here for the first time. Finally, the vibrational temperature of the plasma and the relative populations of hot and cold OH(A) states are quantified spatially and phase resolved.
Gravitational waves in Poincaré gauge gravity theory
Creators: name: Obukhov, Yuri N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the exact gravitational wave solutions in a general class of quadratic Poincaré gauge gravity models. The Lagrangian includes all possible linear and quadratic invariants constructed from the torsion and the curvature, including the parity odd terms. The ansatz for the gravitational wave configuration and the properties of the wave solutions are patterned following the corresponding ansatz and the properties of the plane-fronted electromagnetic wave.
description: 12 pages, Revtex. Minor changes
Inferring Cognitive Models from Data using Approximate Bayesian Computation
Creators: name: Kangasrääsiö, Antti
name: Athukorala, Kumaripaba
name: Howes, Andrew
name: Corander, Jukka
name: Kaski, Samuel
name: Oulasvirta, Antti
Publisher: name: arXiv
Year: 2016
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: An important problem for HCI researchers is to estimate the parameter values of a cognitive model from behavioral data. This is a difficult problem, because of the substantial complexity and variety in human behavioral strategies. We report an investigation into a new approach using approximate Bayesian computation (ABC) to condition model parameters to data and prior knowledge. As the case study we examine menu interaction, where we have click time data only to infer a cognitive model that implements a search behaviour with parameters such as fixation duration and recall probability. Our results demonstrate that ABC (i) improves estimates of model parameter values, (ii) enables meaningful comparisons between model variants, and (iii) supports fitting models to individual users. ABC provides ample opportunities for theoretical HCI research by allowing principled inference of model parameter values and their uncertainty.
description: To appear in CHI'2017
EL VIAJE Y ADIÓS A LA POESÍA: PRIMEROS DESTELLOS DE CIUDAD EN ROBERTO BOLAÑO
Creators: name: Sánchez Ramos, Nelida Jeanette
Publisher: name: figshare
Year: 2023
Subjects: Literature in Spanish and Portuguese
Other human society not elsewhere classified

description: En Roberto Bolaño el viaje va engarzado a la palabra exilio en sus diferentes etapas de vida y se refleja en sus obras. Así pues, la temática del periplo es una urbanidad que solo parece coexistir en el seno de una textualidad que la posibilita y donde sus protagonistas actúan como elementos centrípetos del relato. Efigies discontinuas que habitan en una permanente huida, gran parte de ellos son nómadas, exiliados de las dictaduras latinoamericanas, combatientes revolucionarios, poetas fracasados y novelistas. La poesía se abre hacia la narrativa, pues según Bolaño, narrativa y poesía se reducen a una sola. La obra del chileno se mezcla, se reduce a narrador lírico o novelista poético, y allí simultáneamente se esboza la ciudad literaria cuyo contenido se especifica para aportarnos informaciones sobre el siglo XXI.
Marktanalyse Schweizer Christbäume
Creators: name: Schmid, Kevin
name: Brand, Dan
name: Mollet, Fabian
Publisher: name: My University
Year: 2014
Subjects: subject: Marktanalyse
subject: Marktvolumen
subject: Markttrends
subject: Branchenentwicklung
subject: Christbaumproduzenten
subject: Nordmannstannen
subject: Waldwirtschaft Schweiz
subject: IG Suisse Christbaum
subject: 330 - Wirtschaft
subject: 659 - Werbung & Public Releations (PR)

description: Über den Schweizer Christbaummarkt existierten bisher nur grobe Schätzungen der IG Suisse Christbaum. Diese Schätzungen sind im Rahmen dieser Projektarbeit mit einer Produzentenbefragung, Importstatistiken und anderen Hilfsmitteln validiert worden. (Beitrag ist nur für FHNW Mitarbeitende sichtbar)
Newly observed $Λ_c(2860)^+$ at LHCb and its \emph{D}-wave partners $Λ_c(2880)^+$, $Ξ_c(3055)^+$ and $Ξ_c(3080)^+$
Creators: name: Chen, Bing
name: Liu, Xiang
name: Zhang, Ailin
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: New resonance $Λ_c(2860)^+$, reported by LHCb, is a key to establish \emph{D}-wave charmed and charmed-strange baryon families. In this work, we first carry out an analysis of mass spectra of the $λ$-mode excited charmed and charmed-strange baryon states, which may reveal the relation of $Λ_c(2860)^+$, $Λ_c(2880)^+$, $Ξ_c(3055)^+$ and $Ξ_c(3080)^+$, $i.e.$, $Λ_c(2860)^+$ and $Λ_c(2880)^+$ can form a \emph{D}-wave doublet $[3/2^+,5/2^+]$ while $Ξ_c(3055)^+$ and $Ξ_c(3080)^+$ are the strange partners of $Λ_c(2860)^+$ and $Λ_c(2880)^+$, respectively. Further study of their two-body Okubo-Zweig-Iizuka-allowed decays supports $Λ_c(2860)^+$ and $Ξ_c(3055)^+$ as the \emph{D}-wave charmed and charmed-strange baryons, respectively, with $J^P=3/2^+$. For $Λ_c(2880)^+$ and $Ξ_c(3080)^+$, however, there exist some difficulties under the \emph{D}-wave assignment with $J^P=5/2^+$ since the experimental widths and some ratios of partial width of $Λ_c(2880)^+$ and $Ξ_c(3080)^+$ cannot be reproduced in our calculation.
description: 6 pages, 1 figures, 4 tables, RevTex, more discussions and references added, Accepted by Phys. Rev. D
Digital Appendix. Dgital Appendix. Master thesis on Accelerating the transition to regenerative agriculture: An analysis of social tipping elements and their interactions using participatory modelling.
Creators: name: Rimmert, Marlene
Publisher: name: Zenodo
Year: 2024

description: The Digital Appendix include:

01_Interview transcripts

01-1_education-transcript.pdf

01-2_finance-land-access-transcript.pdf

01-3_information-feedbacks-lobbying-transcript.pdf

01-4_law-policy-transcript.pdf

01-5_localisation-decentralisation-transcript.pdf

01-6_norms-values-transcript.pdf

02_Cross-STE categorisation.xlsx

03_Reclassification of system elements.xlsx

04_Data collection scheme.xlsx

05_Interacting STE model.pdf
Empfehlung für die Einführung eines neuen Lohnsystems der Klinik Lengg AG Analyse von Lohnsystemen im Gesundheitsbereich
Creators: name: Stalder, Thomas
Publisher: name: My University
Year: 2015
Subjects: subject: Einführung
subject: Lohnsystem
subject: Gesundheitsbereich
subject: 330 - Wirtschaft
subject: 650 - Management

description: Die Klinik Lengg AG steht vor der Einführung eines neuen Lohnsystems. Zurzeit lehnt sich das System an jenes, des Kantons Zürich an. Diese Arbeit gibt eine Empfehlung ab, wie das neue Lohnsystem aussehen kann und welche Komponenten es beinhaltet. (Beitrag ist nur für FHNW Mitarbeitende sichtbar)
TEE, a simple estimator for the precision of eclipse and transit minimum times
Creators: name: Deeg, Hans J.
name: Tingley, Brandon
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: Transit or eclipse timing variations have proven to be a valuable tool in exoplanet research. However, no simple way to estimate the potential precision of such timing measures has been presented yet, nor are guidelines available regarding the relation between timing errors and sampling rate. Aims: A `timing error estimator' (TEE) equation is presented that requires only basic transit parameters as input. With the TEE, it is straightforward to estimate timing precisions both for actual data as well as for future instruments, such as the TESS and PLATO space missions. Methods: A derivation of the timing error based on a trapezoidal transit shape is given. We also verify the TEE on realistically modeled transits using Monte Carlo simulations and determine its validity range, exploring in particular the interplay between ingress/egress times and sampling rates. Results: The simulations show that the TEE gives timing errors very close to the correct value, as long as the temporal sampling is faster than transit ingress/egress durations and transits with very low S/N are avoided. Conclusions: The TEE is a useful tool to estimate eclipse or transit timing errors in actual and future data-sets. In combination with an equation to estimate period errors (Deeg 2015), predictions for the ephemeris precision of long-coverage observations are possible as well. The tests for the TEE's validity-range led also to implications for instrumental design: Temporal sampling has to be faster than transit in- or egress durations, or a loss in timing-precision will occur. An application to the TESS mission shows that transits close to its detection limit will have timing uncertainties that exceed 1 hour within a few months after their acquisition. Prompt follow-up observations will be needed to avoid a `loosing' of their ephemeris.
description: Accepted by A&A. Version 2 with updated timing uncertainties of TESS mission due to correction of a figure in Sullivan et al. 2015
Mechanics of a granular skin
Creators: name: Karmakar, Somnath
name: Sane, Anit
name: Bhattacharya, S.
name: Ghosh, Shankar
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Magic Sand, a hydrophobic toy granular material, is widely used in popular science instructions because of its non-intuitive mechanical properties. A detailed study of the failure of an underwater column of magic sand shows that these properties can be traced to a single phenomenon: the system self-generates a cohesive skin that encapsulates the material inside. The skin, consists of pinned air-water-grain interfaces, shows multi-scale mechanical properties: they range from contact-line dynamics in the intra-grain roughness scale, plastic flow at the grain scale, all the way to the sample-scale mechanical responses. With decreasing rigidity of the skin, the failure mode transforms from brittle to ductile (both of which are collective in nature) to a complete disintegration at the single grain scale.
description: 11 pages, 9 figures
Kundenbindung möglicher Schlüssel zum Erfolg!? Dargestellt am Beispiel pdc Marketing + Information Technology AG
Creators: name: Marcolongo, Dominik
name: Sprovieri, Danillo
Publisher: name: My University
Year: 2013
Subjects: subject: CRM
subject: Kundenbindung
subject: Kundenzufriedenheit
subject: Kundenloyalität
subject: nachweisbarer Nutzen
subject: 330 - Wirtschaft
subject: 659 - Werbung & Public Releations (PR)

description: Unternehmen stellen sich die Frage, ob die Implementierung eines CRM-Systems einen nachweisbaren Nutzen mit sich bringt. Dies beginnt bei der Entscheidung der Einführung und endet beim Nachweis des tatsächlichen Mehrwertes in Form eines Return on Investment sei es monetärer & nicht monetärer Natur. (Beitrag ist nur für FHNW Mitarbeitende sichtbar)
Mechanisms of localization in isotope-substituted dynamical Jahn-Teller systems
Creators: name: Iwahara, Naoya
name: Sato, Tohru
name: Tanaka, Kazuyoshi
name: Chibotaru, Liviu F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The mechanisms of localization of Jahn-Teller deformations and vibronic wavefunctions in isotope substituted dynamical Jahn-Teller systems are elucidated. It is found that the localization in the trough is of potential type in the case of strong vibronic coupling, while it becomes of kinetic type in the case of intermediate and weak coupling. It is shown that the vibronic levels in the linear $E\otimes e$-problem remain double degenerate upon arbitrary isotope substitution on the reasons similar to time reversal symmetry in which the role of spin is played by orbital pseudospin.
description: 6 pages, 4 figures
Off-shell Poincare Supergravity
Creators: name: Freedman, Daniel Z.
name: Roest, Diederik
name: Van Proeyen, Antoine
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present the action and transformation rules of Poincare supergravity coupled to chiral multiplets $(z^α, χ^α, h^α)$ with off-shell auxiliary fields. Starting from the geometric formulation of the superconformal theory with auxiliary fields, we derive the Poincare counterpart by gauge-fixing the Weyl and chiral symmetry and S-supersymmetry. We show how this transition is facilitated by retaining explicit target-space covariance. Our results form a convenient starting point to study models with constrained superfields, including general matter-coupled de Sitter supergravity.
description: 30 pages; v2: version to be published in JHEP
Access Denied: Meaningful Data Access for Quantitative Algorithm Audits
Creators: name: Zaccour, Juliette
name: Binns, Reuben
name: Rocher, Luc
Publisher: name: arXiv
Year: 2025
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Independent algorithm audits hold the promise of bringing accountability to automated decision-making. However, third-party audits are often hindered by access restrictions, forcing auditors to rely on limited, low-quality data. To study how these limitations impact research integrity, we conduct audit simulations on two realistic case studies for recidivism and healthcare coverage prediction. We examine the accuracy of estimating group parity metrics across three levels of access: (a) aggregated statistics, (b) individual-level data with model outputs, and (c) individual-level data without model outputs. Despite selecting one of the simplest tasks for algorithmic auditing, we find that data minimization and anonymization practices can strongly increase error rates on individual-level data, leading to unreliable assessments. We discuss implications for independent auditors, as well as potential avenues for HCI researchers and regulators to improve data access and enable both reliable and holistic evaluations.
description: 30 pages, 12 figures. To be published in CHI Conference on Human Factors in Computing Systems (CHI '25)
X-Shooter study of accretion in Chamaeleon I: II. A steeper increase of accretion with stellar mass for very low mass stars?
Creators: name: Manara, C. F.
name: Testi, L.
name: Herczeg, G. J.
name: Pascucci, I.
name: Alcala, J. M.
name: Natta, A.
name: Antoniucci, S.
name: Fedele, D.
name: Mulders, G. D.
name: Henning, T.
name: Mohanty, S.
name: Prusti, T.
name: Rigliaco, E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The dependence of the mass accretion rate on the stellar properties is a key constraint for star formation and disk evolution studies. Here we present a study of a sample of stars in the Chamaeleon I star forming region carried out using the VLT/X-Shooter spectrograph. The sample is nearly complete down to M~0.1Msun for the young stars still harboring a disk in this region. We derive the stellar and accretion parameters using a self-consistent method to fit the broad-band flux-calibrated medium resolution spectrum. The correlation between the accretion luminosity to the stellar luminosity, and of the mass accretion rate to the stellar mass in the logarithmic plane yields slopes of 1.9 and 2.3, respectively. These slopes and the accretion rates are consistent with previous results in various star forming regions and with different theoretical frameworks. However, we find that a broken power-law fit, with a steeper slope for stellar luminosity smaller than ~0.45 Lsun and for stellar masses smaller than ~ 0.3 Msun, is slightly preferred according to different statistical tests, but the single power-law model is not excluded. The steeper relation for lower mass stars can be interpreted as a faster evolution in the past for accretion in disks around these objects, or as different accretion regimes in different stellar mass ranges. Finally, we find two regions on the mass accretion versus stellar mass plane empty of objects. One at high mass accretion rates and low stellar masses, which is related to the steeper dependence of the two parameters we derived. The second one is just above the observational limits imposed by chromospheric emission. This empty region is located at M~0.3-0.4Msun, typical masses where photoevaporation is known to be effective, and at mass accretion rates ~10^-10 Msun/yr, a value compatible with the one expected for photoevaporation to rapidly dissipate the inner disk.
description: Accepted for publication on Astronomy & Astrophysics. Abstract shortened for arxiv constraints. Revised version after language editing
Asteroid 1566 Icarus's size, shape, orbit, and Yarkovsky drift from radar observations
Creators: name: Greenberg, Adam H.
name: Margot, Jean-Luc
name: Verma, Ashok K.
name: Taylor, Patrick A.
name: Naidu, Shantanu P.
name: Brozovic, Marina.
name: Benner, Lance A. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Near-Earth asteroid (NEA) 1566 Icarus ($a=1.08$ au, $e=0.83$, $i=22.8^{\circ}$) made a close approach to Earth in June 2015 at 22 lunar distances (LD). Its detection during the 1968 approach (16 LD) was the first in the history of asteroid radar astronomy. A subsequent approach in 1996 (40 LD) did not yield radar images. We describe analyses of our 2015 radar observations of Icarus obtained at the Arecibo Observatory and the DSS-14 antenna at Goldstone. These data show that the asteroid is a moderately flattened spheroid with an equivalent diameter of 1.44 km with 18% uncertainties, resolving long-standing questions about the asteroid size. We also solve for Icarus' spin axis orientation ($λ=270^{\circ}\pm10^{\circ}, β=-81^{\circ}\pm10^{\circ}$), which is not consistent with the estimates based on the 1968 lightcurve observations. Icarus has a strongly specular scattering behavior, among the highest ever measured in asteroid radar observations, and a radar albedo of $\sim$2\%, among the lowest ever measured in asteroid radar observations. The low cross-section suggests a high-porosity surface, presumably related to Icarus' cratering, spin, and thermal histories. Finally, we present the first use of our orbit determination software for the generation of observational ephemerides, and we demonstrate its ability to determine subtle perturbations on NEA orbits by measuring Icarus' orbit-averaged drift in semi-major axis ($(-4.62\pm0.48) \times 10^{-4}$ au/My, or $\sim$60 m per revolution). Our Yarkovsky rate measurement resolves a discrepancy between two published rates that did not include the 2015 radar astrometry.
description: 19 pages, 6 figures. The Astronomical Journal, in press
Large-scale structure and hyperuniformity of amorphous ices
Creators: name: Martelli, Fausto
name: Torquato, Salvatore
name: Giovambattista, Nicolas
name: Car, Roberto
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the large-scale structure of amorphous ices and transitions between their different forms by quantifying their large-scale density fluctuations. Specifically, we simulate the isothermal compression of low-density amorphous ice (LDA) and hexagonal ice (Ih) to produce high-density amorphous ice (HDA). Remarkably, both HDA and LDA are nearly hyperuniform, meaning that they are characterized by an anomalous suppression of large-scale density fluctuations. By contrast, in correspondence with both non-equilibrium phase transitions to HDA, the presence of structural heterogeneities strongly suppresses the hyperuniformity and, remarkably, the system becomes hyposurficial (devoid of "surface-area" fluctuations). Our investigation challenges the largely accepted "frozen-liquid" picture, which views glasses as structurally arrested liquids. Beyond implications for water, our findings enrich our understanding of the structural transformations that occur in glasses with varying pressures.
Design and analysis of unipolar magnetic coupler with improved performance for dynamic wireless power transfer applications
Creators: name: Khalid, Hassan
Publisher: name: Swinburne
Year: 2024

description: The proposed research aims to develop a magnetic coupler with improved performance characteristics for static and dynamic inductive power transfer electric vehicle charging applications. The designed magnetic coupler allows maximum power transfer at an efficiency of around 93%. The proposed magnetic coupler achieves a maximum coupling coefficient with 98% misalignment tolerance in static charging applications. The dynamic track with multiple transmitters offers very low mutual inductance with neighboring transmitters and the output fluctuations are around 1.3%. These superior characteristics make the proposed design compete both conventional and modern magnetic couplers.
Dark-ages Reionization & Galaxy Formation Simulation VIII. Suppressed growth of dark matter halos during the Epoch of Reionization
Creators: name: Qin, Yuxiang
name: Duffy, Alan R.
name: Mutch, Simon J.
name: Poole, Gregory B.
name: Geil, Paul M.
name: Angel, Paul W.
name: Mesinger, Andrei
name: Wyithe, J. Stuart B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate how the hydrostatic suppression of baryonic accretion affects the growth rate of dark matter halos during the Epoch of Reionization. By comparing halo properties in a simplistic hydrodynamic simulation in which gas only cools adiabatically, with its collisionless equivalent, we find that halo growth is slowed as hydrostatic forces prevent gas from collapsing. In our simulations, at the high redshifts relevant for reionization (between ${\sim}6$ and ${\sim}11$), halos that host dwarf galaxies ($\lesssim 10^{9} \mathrm{M_\odot}$) can be reduced by up to a factor of 2 in mass due to the hydrostatic pressure of baryons. Consequently, the inclusion of baryonic effects reduces the amplitude of the low mass tail of the halo mass function by factors of 2 to 4. In addition, we find that the fraction of baryons in dark matter halos hosting dwarf galaxies at high redshift never exceeds ${\sim}90\%$ of the cosmic baryon fraction. When implementing baryonic processes, including cooling, star formation, supernova feedback and reionization, the suppression effects become more significant with further reductions of ${\sim}30\%$ to 60\%. Although convergence tests suggest that the suppression may become weaker in higher resolution simulations, this suppressed growth will be important for semi-analytic models of galaxy formation, in which the halo mass inherited from an underlying N-body simulation directly determines galaxy properties. Based on the adiabatic simulation, we provide tables to account for these effects in N-body simulations, and present a modification of the halo mass function along with explanatory analytic calculations.
description: 17 pages, 11 figures; Updated to match the published version. Two changes in Figures 1 and 3 in order to 1) correct bin sizes of the 10^8 and 10^8.5 Msol bins for NOSN_NOZCOOL_NoRe (was 0.5, should be 0.25); 2) include stellar mass in baryon fraction (was missed in Fig. 3). Quantitative description of Fig. 3 changed slightly in Section 2.2. All other results and conclusions remain unchanged
Evolution of the real-space correlation function from next generation cluster surveys
Creators: name: Sridhar, Srivatsan
name: Maurogordato, Sophie
name: Benoist, Christophe
name: Cappi, Alberto
name: Marulli, Federico
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate to which accuracy it is possible to recover the real-space two-point correlation function of galaxy clusters from cluster catalogues based on photometric redshifts, and test our ability to measure the redshift and mass evolution of the correlation length and the bias parameter as a function of the redshift uncertainty. We calculate the correlation function for cluster sub-samples covering various mass and redshift bins selected from a light-cone catalogue. To simulate the distribution of clusters in photometric redshift space, we assign to each cluster a redshift randomly extracted from a Gaussian distribution. The dispersion is varied in the range $σ_{(z=0)} = 0.001$ to $0.050$. The correlation function in real-space is computed through estimation and deprojection of $w_{p}(r_{p})$. Four mass ranges (from $M_{halo}> 2 \times 10^{13}$ to $M_{halo}> 2 \times 10^{14}$) and six redshift slices covering the redshift range [0,2] are investigated, using cosmological redshifts and photo-z configurations. We find a clear increase of the correlation amplitude as a function of redshift and mass for the $z_{c}$ samples. The evolution of the derived bias parameter is in agreement with theoretical expectations. From our pilot sample limited to $M_{halo}> 5 \times 10^{13} (0.4 < z < 0.7)$, we find that the real-space correlation function can be recovered by deprojection of $w_{p}(r_{p})$ within an accuracy of 5% for $σ_{z} = 0.001 \times (1 + z_{c})$ and within 10% for $σ_{z} = 0.03 \times (1 + z_{c})$. The evolution of the correlation in redshift and mass is clearly detected for all $σ_{z}$ tested. The best-fit parameters $(r_{0}$ and $γ)$ as well as the bias obtained from the deprojection method for all $σ_{z}$ are within the $1 σ$ uncertainty of the $z_{c}$ sample.
description: Final version after language correction. Accepted for publication in Astronomy&Astrophysics (A&A)
Object categorization in finer levels requires higher spatial frequencies, and therefore takes longer
Creators: name: Ashtiani, Matin N.
name: Kheradpisheh, Saeed Reza
name: Masquelier, Timothée
name: Ganjtabesh, Mohammad
Publisher: name: arXiv
Year: 2017
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: The human visual system contains a hierarchical sequence of modules that take part in visual perception at different levels of abstraction, i.e., superordinate, basic, and subordinate levels. One important question is to identify the "entry" level at which the visual representation is commenced in the process of object recognition. For a long time, it was believed that the basic level had advantage over two others; a claim that has been challenged recently. Here we used a series of psychophysics experiments, based on a rapid presentation paradigm, as well as two computational models, with bandpass filtered images to study the processing order of the categorization levels. In these experiments, we investigated the type of visual information required for categorizing objects in each level by varying the spatial frequency bands of the input image. The results of our psychophysics experiments and computational models are consistent. They indicate that the different spatial frequency information had different effects on object categorization in each level. In the absence of high frequency information, subordinate and basic level categorization are performed inaccurately, while superordinate level is performed well. This means that, low frequency information is sufficient for superordinate level, but not for the basic and subordinate levels. These finer levels require high frequency information, which appears to take longer to be processed, leading to longer reaction times. Finally, to avoid the ceiling effect, we evaluated the robustness of the results by adding different amounts of noise to the input images and repeating the experiments. As expected, the categorization accuracy decreased and the reaction time increased significantly, but the trends were the same.This shows that our results are not due to a ceiling effect.
Critical magnetic fields in a superconductor coupled to a superfluid
Creators: name: Haber, Alexander
name: Schmitt, Andreas
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study a superconductor that is coupled to a superfluid via density and derivative couplings. Starting from a Lagrangian for two complex scalar fields, we derive a temperature-dependent Ginzburg-Landau potential, which is then used to compute the phase diagram at nonzero temperature and external magnetic field. This includes the calculation of the critical magnetic fields for the transition to an array of magnetic flux tubes, based on an approximation for the interaction between the flux tubes. We find that the transition region between type-I and type-II superconductivity changes qualitatively due to the presence of the superfluid: the phase transitions at the upper and lower critical fields in the type-II regime become first order, opening the possibility of clustered flux tube phases. These flux tube clusters may be realized in the core of neutron stars, where superconducting protons are expected to be coupled to superfluid neutrons.
description: 29 pages, 7 figures; v2: references and clarifications added, version to appear in Phys. Rev. D
Dissipative random quantum spin chain with boundary-driving and bulk-dephasing: magnetization and current statistics in the Non-Equilibrium-Steady-State
Creators: name: Monthus, Cecile
Publisher: name: arXiv
Year: 2017
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The Lindblad dynamics with dephasing in the bulk and magnetization-driving at the two boundaries is studied for the quantum spin chain with random fields $h_j$ and couplings $J_j$ (that can be either uniform or random). In the regime of strong disorder in the random fields, or in the regime of strong bulk-dephasing, the effective dynamics can be mapped onto a classical Simple Symmetric Exclusion Process with quenched disorder in the diffusion coefficient associated to each bond. The properties of the corresponding Non-Equilibrium-Steady-State in each disordered sample between the two reservoirs are studied in detail by extending the methods that have been previously developed for the Symmetric Exclusion Process without disorder. Explicit results are given for the magnetization profile, for the two-point correlations, for the mean current and for the current fluctuations, in terms of the random fields and couplings defining the disordered sample.
description: revised version, 17 pages
Viscosity for Anisotropic Reissner Nordström Blackbranes
Creators: name: Chakraborty, Soumangsu
name: Samanta, Rickmoy
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the behavior of shear viscosity in the presence of small anisotropy and a finite chemical potential. First, we construct an anisotropic Reissner Nordstr{ö}m blackbrane in 5 dimensions in a simple Einstein-Maxwell theory with a small linear dilaton. This solution is characterized by three mass scales : anisotropy $ρ$, temperature T and chemical potential $μ$. We find this solution upto second order in the dilaton anisotropy parameter $ρ$. This blackbrane solution corresponds to an anisotropic phase where the anisotropy is small compared to the temperature and chemical potential. We find that in this anisotropic phase, some components of the anisotropic shear viscosity tensor, which are spin one with respect to the residual symmetry after breaking rotational invariance, violates the KSS bound (${η\over s}\ge {1 \over 4 π} $) proposed by Kovtun, Son and Starinets. We identify the regions of the parameter space where these violations are significant. We carry out a similar analysis in 4 dimensions and find similar violation of the KSS bound for the spin one components to demonstrate the generality of the result. Our results are particularly relevant in the context of strongly coupled systems found in nature. We also provide an intuitive understanding of the results using dimensional reduction and a Boltzmann calculation in a weakly coupled version of a similar system. The Boltzmann analysis performed in a system of weakly interacting particles in a linear potential also shows that components of the viscosity tensor may be reduced. It is intriguing that the Boltzmann analysis also predicts the corrections to be negative and that too in a manner similar to the anisotropic strongly coupled theories with smooth gravity duals.
description: References added, minor changes, appendix added