cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Generative AI
Creators: name: Feuerriegel, Stefan
name: Hartmann, Jochen
name: Janiesch, Christian
name: Zschech, Patrick
Publisher: name: arXiv
Year: 2023
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The term "generative AI" refers to computational techniques that are capable of generating seemingly new, meaningful content such as text, images, or audio from training data. The widespread diffusion of this technology with examples such as Dall-E 2, GPT-4, and Copilot is currently revolutionizing the way we work and communicate with each other. In this article, we provide a conceptualization of generative AI as an entity in socio-technical systems and provide examples of models, systems, and applications. Based on that, we introduce limitations of current generative AI and provide an agenda for Business & Information Systems Engineering (BISE) research. Different from previous works, we focus on generative AI in the context of information systems, and, to this end, we discuss several opportunities and challenges that are unique to the BISE community and make suggestions for impactful directions for BISE research.
description: Published in Business & Information Systems Engineering (2023)
title: Tropical Ocean Climate Study (TOCS) CRUISE REPORT TOCS K9601
Creators: name: Kuroda, Yoshifumi
name: Takao, Kouichi
Publisher: name: JAMSTEC
Year: 1996
Subjects: subject: Cruise report
subject: R/V KAIYO
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of K96-01 Leg1 on R/V KAIYO from 1996-01-23 to 1996-02-06 and K96-01 Leg2 on R/V KAIYO from 1996-02-08 to 1996-03-10.
title: Tropical Ocean Climate Study (TOCS) CRUISE REPORT TOCS K96-06
Creators: name: Yoneyama, Kunio
Publisher: name: JAMSTEC
Year: 1996
Subjects: subject: Cruise report
subject: R/V KAIYO
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of K96-06 on R/V KAIYO from 1996-07-06 to 1996-08-05.
Gravitational Higgs Mechanism in Neutron Star Interiors
Creators: name: Coates, Andrew
name: Horbartsch, Michael W.
name: Sotiriou, Thomas P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We suggest that nonminimally coupled scalar fields can lead to modifications of the microphysics in the interiors of relativistic stars. As a concrete example, we consider the generation of a non-zero photon mass in such high-density environments. This is achieved by means of a light gravitational scalar, and the scalarization phase transition in scalar-tensor theories of gravitation. Two distinct models are presented, and phenomenological implications are briefly discussed.
description: 5 pages
title: Tropical Ocean Climate Study (TOCS) Cruise Report for PR1S and PR24 (K93-07 Leg3)
Creators: name: Muneyama, Kei
Publisher: name: JAMSTEC
Year: 1994
Subjects: subject: Cruise report
subject: R/V KAIYO
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of K93-07 Leg3 on R/V KAIYO from 1994-02-12 to 1994-03-03.
A Lean-Congruence Format for EP-Bisimilarity
Creators: name: van Glabbeek, Rob
name: Höfner, Peter
name: Wang, Weiyou
Publisher: name: arXiv
Year: 2023
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.3.2; F.1.2

description: Enabling preserving bisimilarity is a refinement of strong bisimilarity that preserves safety as well as liveness properties. To define it properly, labelled transition systems needed to be upgraded with a successor relation, capturing concurrency between transitions enabled in the same state. We enrich the well-known De Simone format to handle inductive definitions of this successor relation. We then establish that ep-bisimilarity is a congruence for the operators, as well as lean congruence for recursion, for all (enriched) De Simone languages.
description: In Proceedings EXPRESS/SOS2023, arXiv:2309.05788. A full version of this paper, enriched with two appendices, is available at arXiv:2308.16350
Dynamics of the spin-boson model: the effect of bath initial conditions
Creators: name: Chen, Lipeng
name: Yan, Yiying
name: Gelin, Maxim F.
name: Lü, Zhiguo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Dynamics of the (sub-)Ohmic spin-boson model under various bath initial conditions is investigated by employing the Dirac-Frenkel time-dependent variational approach with the multiple Davydov $\mathrm{D_1}$ ansatz in the interaction picture. The validity of our approach is carefully checked by comparing results with those of the hierarchy equations of motion method. By analyzing the features of nonequilibrium dynamics, we identify the phase diagrams for different bath initial conditions. We find that for spectral exponent $s
description: 9 pages
title: Tropical Ocean Climate Study (TOCS) Cruise Report K93-07
Creators: name: Kuroda, Yoshifumi
Publisher: name: JAMSTEC
Year: 1993
Subjects: subject: Cruise report
subject: R/V KAIYO
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of K93-07 Leg1 on R/V KAIYO from 1993-11-27 to 1993-12-29.
Morphing of 2D Hole Systems at $ν=3/2$ in Parallel Magnetic Fields: Compressible, Stripe, and Fractional Quantum Hall Phases
Creators: name: Liu, Yang
name: Mueed, M. A.
name: Hossain, Md. Shafayat
name: Hasdermir, S.
name: Pfeiffer, L. N.
name: West, K. W.
name: Baldwin, K. W.
name: Shayegan, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A transport study of two-dimensional (2D) holes confined to wide GaAs quantum wells provides a glimpse of a subtle competition between different many-body phases at Landau level filling $ν=3/2$ in tilted magnetic fields. At large tilt angles ($θ$), an anisotropic, stripe (or nematic) phase replaces the isotropic compressible Fermi sea at $ν=3/2$ if the quantum well has a symmetric charge distribution. When the charge distribution is made asymmetric, instead of the stripe phase, an even-denominator fractional quantum state appears at $ν=3/2$ in a range of large $θ$, and reverts back to a compressible state at even higher $θ$. We attribute this remarkable evolution to the significant mixing of the excited and ground-state Landau levels of 2D hole systems in tilted fields.
title: R/V KAIYO Cruise report K93-01 Leg2
Creators: name: Kuroda, Yoshifumi
Publisher: name: JAMSTEC
Year: 1993
Subjects: subject: Cruise report
subject: R/V KAIYO
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of K93-01 Leg2 on R/V KAIYO from 1993-04-16 to 1993-05-01.
A proof for string three-point functions in AdS$_3$
Creators: name: Bufalini, Davide
name: Iguri, Sergio
name: Kovensky, Nicolas
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Correlation functions of the $\text{SL}(2,\mathbb{R})$-WZW model involving spectrally flowed vertex operators are notoriously difficult to compute. An explicit integral expression for the corresponding three-point functions was recently conjectured in [arXiv:2105.12130v2]. In this paper, we provide a proof for this conjecture. For this, we extend the methods of [arXiv:2208.00978] based on the so-called $\text{SL}(2,\mathbb{R})$ series identifications, which relate vertex operators belonging to different spectral flow sectors. We also highlight the role of holomorphic covering maps in this context. Our results constitute an important milestone for proving this instance of the AdS$_3$/CFT$_2$ holographic duality at finite 't Hooft coupling.
description: 22 pages
The age-metallicity relation in the solar neighbourhood from a pilot sample of white dwarf-main sequence binaries
Creators: name: Rebassa-Mansergas, A.
name: Anguiano, B.
name: García-Berro, E.
name: Freeman, K. C.
name: Cojocaru, R.
name: Manser, C. J.
name: Pala, A. F.
name: Gänsicke, B. T.
name: Liu, X. -W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The age-metallicity relation (AMR) is a fundamental observational constraint for understanding how the Galactic disc formed and evolved chemically in time. However, there is not yet an agreement on the observational properties of the AMR for the solar neighbourhood, primarily due to the difficulty in obtaining accurate stellar ages for individual field stars. We have started an observational campaign for providing the much needed observational input by using wide white dwarf-main sequence (WDMS) binaries. White dwarfs are natural clocks and can be used to derive accurate ages. Metallicities can be obtained from the main sequence companions. Since the progenitors of white dwarfs and the main sequence stars were born at the same time, WDMS binaries provide a unique opportunity to observationally constrain in a robust way the properties of the AMR. In this work we present the AMR derived from analysing a pilot sample of 23 WDMS binaries and provide clear observational evidence for the lack of correlation between age and metallicity at young and intermediate ages (0-7 Gyrs).
description: Accepted for publication by MNRAS
Object-oriented case tool development using the C++ language
Creators: name: Sov, David Chun.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Unifying Suspension and Granular flows near Jamming
Creators: name: DeGiuli, Eric
name: Wyart, Matthieu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Rheological properties of dense flows of hard particles are singular as one approaches the jamming threshold where flow ceases, both for granular flows dominated by inertia, and for over-damped suspensions. Concomitantly, the lengthscale characterizing velocity correlations appears to diverge at jamming. Here we review a theoretical framework that gives a scaling description of stationary flows of frictionless particles. Our analysis applies both to suspensions and inertial flows of hard particles. We report numerical results in support of the theory, and show the phase diagram that results when friction is added, delineating the regime of validity of the frictionless theory.
description: Short review to appear in Powders and Grains 2017
Energy balance SED modelling can be effective at high redshifts regardless of UV-FIR offsets
Creators: name: Haskell, P.
name: Smith, D. J. B.
name: Cochrane, R. K.
name: Hayward, C. C.
name: Anglés-Alcázar, D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent works have suggested that energy balance spectral energy distribution (SED) fitting codes may be of limited use for studying high-redshift galaxies for which the observed ultraviolet and far-infrared emission are offset (spatially `decoupled'). It has been proposed that such offsets could lead energy balance codes to miscalculate the overall energetics, preventing them from recovering such galaxies' true properties. In this work, we test how well the SED fitting code Magphys can recover the stellar mass, star formation rate (SFR), specific SFR, dust mass and luminosity by fitting 6,706 synthetic SEDs generated from four zoom-in simulations of dusty, high-redshift galaxies from the FIRE project via dust continuum radiative transfer. Comparing our panchromatic results (using wavelengths 0.4-500$μ$m, and spanning $1
description: 18 pages, 9 figures, published in MNRAS
Non-linear black hole dynamics and Carrollian fluids
Creators: name: Redondo-Yuste, Jaime
name: Lehner, Luis
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The dynamics of black hole horizons has recently been linked to that of Carrollian fluids. This results in a dictionary between geometrical quantities and those of a fluid with unusual properties due its underlying Carrollian symmetries. In this work we explore this relation in dynamical settings with the interest of shedding light on either side by relevant observations. In particular: we discuss how the null surface where the Carrollian fluid evolves is affected by its behavior; that the fluid's equilibration properties are tied to teleological considerations; the connection of higher derivative contributions as both source of energy and dissipation for the fluid and the non-linear behavior of black holes. This latter point, connects with discussions of non-linear modes in the relaxation to equilibrium of perturbed black holes.
description: 27 pages, 11 figures
Elastic constants of hcp $^{4}$He: Path-integral Monte Carlo results versus experiment
Creators: name: Ardila, Luis Aldemar Peña
name: Vitiello, Silvio A.
name: de Koning, Maurice
Publisher: name: arXiv
Year: 2016
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The elastic constants of hcp $^{4}$He are computed using the path-integral Monte Carlo (PIMC) method. The stiffness coefficients are obtained by imposing different distortions to a periodic cell containing 180 atoms, followed by measurement of the elements of the corresponding stress tensor. For this purpose an appropriate path-integral expression for the stress tensor observable is derived and implemented into the PIMC++ package. In addition to allowing the determination of the elastic stiffness constants, this development also opens the way to an explicit atomistic determination of the Peierls stress for dislocation motion using the PIMC technique. A comparison of the results to available experimental data shows an overall good agreement of the density dependence of the elastic constants, with the single exception of C$_{13}$. Additional calculations for the bcc phase, on the other hand, show good agreement for \textit{all} elastic constants.
description: 3 figures
title: Tropical Ocean Climate Study (TOCS) Cruise Report for PR23 and PR24N (K94-06 Leg3)
Creators: name: Aoyama, Michio
Publisher: name: JAMSTEC
Year: 1995
Subjects: subject: Cruise report
subject: R/V KAIYO
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of K94-06 Leg3 on R/V KAIYO from 1995-01-14 to 1995-02-05.
title: Tropical Ocean Climate Study (TOCS) CRUISE REPORT TOCS K9406 (K94-06 Leg2)
Creators: name: Kuroda, Yoshifumi
Publisher: name: JAMSTEC
Year: 1995
Subjects: subject: Cruise report
subject: R/V KAIYO
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of K94-06 Leg2 on R/V KAIYO from 1994-12-19 to 1995-01-11.
Signal-background interference effects in Higgs-mediated diphoton production beyond NLO
Creators: name: Bargiela, Piotr
name: Buccioni, Federico
name: Caola, Fabrizio
name: Devoto, Federica
name: von Manteuffel, Andreas
name: Tancredi, Lorenzo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this paper we consider signal-background interference effects in Higgs-mediated diphoton production at the LHC. After reviewing earlier works that show how to use these effects to constrain the Higgs boson total decay width, we provide predictions beyond NLO accuracy for the interference and related observables, and study the impact of QCD radiative corrections on the Higgs width determination. In particular, we use the so-called soft-virtual approximation to estimate interference effects at NNLO in QCD. The inclusion of these effects reduce the NNLO prediction for the total Higgs cross-section in the diphoton channel by about 1.7%. We study in detail the impact of QCD corrections on the Higgs-boson line-shape and its implications for the Higgs width extraction. Assuming an experimental resolution of about 150~MeV on interference-induced modifications of the Higgs-boson line-shape, our NNLO analysis shows that one could constrain the Higgs-boson total width to about 10-20 times its Standard Model value.
description: 16 pages, 6 figures, 3 tables
title: K94-06 OCEAN LIDAR CRUISE REPORT
Creators: name: Asanuma, Ichio
Publisher: name: JAMSTEC
Year: 1994
Subjects: subject: Cruise report
subject: R/V KAIYO
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of K94-06 Leg1 on R/V KAIYO from 1994-11-08 to 1994-12-15.
Detector-decoy high-dimensional quantum key distribution
Creators: name: Bao, Hai-ze
name: Bao, Wan-su
name: Wang, Yang
name: Chen, Rui-ke
name: Zhou, Chun
name: Jiang, Mu-sheng
name: Li, Hong-wei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The decoy-state high-dimensional quantum key distribution provides a practical secure way to share more private information with high photon-information efficiency. In this paper, based on detector-decoy method, we propose a detector-decoy high-dimensional quantum key distribution protocol. Employing threshold detectors and a variable attenuator, we can estimate single-photon fraction of postselected events and Eves Holevo information under the Gaussian collective attack with much simpler operations in practical implementation. By numerical evaluation, we show that without varying source intensity and optimizing decoy-state intensity, our protocol could perform much better than one-decoy-state protocol and as well as the two-decoy-state protocol. Specially, when the detector efficiency is lower, the advantage of the detector-decoy method becomes more prominent.
Crystallization and refluidization in very-narrow fluidized beds
Creators: name: Oliveira, Vinícius Pereira da Silva
name: Borges, Danilo da Silva
name: Franklin, Erick de Moraes
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Fluidization of solid particles by an ascending fluid is frequent in industry because of the high rates of mass and heat transfers achieved. However, in some cases blockages occur and hinder the correct functioning of the fluidized bed. In this paper, we investigate the crystallization (defluidization) and refluidization that take place in very-narrow solid-liquid fluidized beds under steady flow conditions. For that, we carried out experiments where either monodisperse or bidisperse beds were immersed in water flows whose velocities were above those necessary for fluidization, and the ratio between the tube and grain diameters was smaller than 6. For monodisperse beds consisting of regular spheres, we observed that crystallization and refluidization alternate successively along time, which we quantify in terms of macroscopic structures and agitation of individual grains. We found the characteristic times for crystallization, and propose a new macroscopic parameter quantifying the degree of bed agitation. The bidisperse beds consisted of less-regular spheres placed on the bottom of a layer of regular spheres (the latter was identical to the monodisperse beds tested). We measured the changes that macroscopic structures and agitation of grains undergo, and show that the higher agitation in the bottom layer hinders crystallization of the top layer. Our results bring new insights into the dynamics of very-narrow beds, in addition to proposing a way of mitigating defluidization.
The use of technology for auditing with an emphasis on documenting audit work
Creators: name: Horsfield, Lyn Joan.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
title: Tropical Ocean Climate Study (TOCS) CRUISE REPORT TOCS K9402
Creators: name: Kuroda, Yoshifumi
Publisher: name: JAMSTEC
Year: 1994
Subjects: subject: Cruise report
subject: R/V KAIYO
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of K94-02 Leg1 on R/V KAIYO from 1994-04-14 to 1994-05-08.
Asteroseismology of double-mode radial $δ$ Scuti stars: AE Ursae Majoris and RV Arietis
Creators: name: Daszynska-Daszkiewicz, J.
name: Walczak, P.
name: Szewczuk, W.
name: Niewiadomski, W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We construct complex seismic models of two high-amplitude delta Sct stars, AE UMa and RV Ari, each pulsating in two radial modes: fundamental and first overtone. The models reproduce, besides the frequencies of two radial modes, also the amplitude of bolometric flux variations (the parameter f) for the dominant mode. Applying the Monte Carlo-based Bayesian analysis, we derive strong constraints, on the parameters of the model as well as on the free parameters of the theory. A vast majority of seismic models of the two stars are just at the beginning of hydrogen-shell burning and a small fraction is at the very end of an overall contraction. The stars have a similar age of about 1.6 Gyr for the hydrogen-shell burning phase. Both stars have unusual low overshooting from the convective core; about 0.02 and 0.004 of the pressure scale height for AE UMa and RV Ari, respectively. This result presumably indicates that overshooting should vary with time and scale with a decreasing convective core. The efficiency of convection in the envelope of both stars is rather low and described by the mixing length parameter alphaMLT of about 0.3-0.6. The third frequency of RV Ari, confirmed by us in the TESS photometry, can only be associated with mixed nonradial modes l=1, g4-g8 or l=2, g10-g12. We include the dipole mode into our Bayesian modelling and demonstrate its huge asteroseismic potential.
description: 13 pages, 8 figures, 8 pages of the appendix, published in MNRAS
Grünbaum coloring and its generalization to arbitrary dimension
Creators: name: Lawrencenko, S.
name: Vyalyi, M. N.
name: Zgonnik, L. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: Computational Complexity (cs.CC)
subject: Geometric Topology (math.GT)
subject: History and Overview (math.HO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05C15 (Primary) 05B05, 52C20, 52C22, 05B07, 57M20, 57M15 (Secondary)

description: This paper is a collection of thoughts and observations, being partly a review and partly a report of current research, on recent work in various aspects of Grünbaum colorings, their existence and usage. In particular, one of the most striking significances of Grünbaum's Conjecture in the 2-dimensional case is its equivalence to the 4-Color Theorem. The notion of Grünbaum coloring is extended from the 2-dimensional case to the case of arbitrary finite hyper-dimensions.
description: 13 pages
title: SHINKAI 6500 / YOKOSUKA CRUISE JAPAN TRENCH ON BOARD REPORT Y95-04 Leg2
Creators: name: Ogawa, Yujiro
Publisher: name: JAMSTEC
Year: 1995
Subjects: subject: Cruise report
subject: S/V YOKOSUKA
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of Y95-04 Leg2 on S/V YOKOSUKA from 1995-07-18 to 1995-07-28.
Optimizing Trial Designs for Targeted Therapies
Creators: name: Ondra, Thomas
name: Jobjörnsson, Sebastian
name: Beckman, Robert A.
name: Burman, Carl-Fredrik
name: König, Franz
name: Stallard, Nigel
name: Posch, Martin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: An important objective in the development of targeted therapies is to identify the populations where the treatment under consideration has positive benefit risk balance. We consider pivotal clinical trials, where the efficacy of a treatment is tested in an overall population and/or in a pre-specified subpopulation. Based on a decision theoretic framework we derive optimized trial designs by maximizing utility functions. Features to be optimized include the sample size and the population in which the trial is performed (the full population or the targeted subgroup only) as well as the underlying multiple test procedure. The approach accounts for prior knowledge of the efficacy of the drug in the considered populations using a two dimensional prior distribution. The considered utility functions account for the costs of the clinical trial as well as the expected benefit when demonstrating efficacy in the different subpopulations. We model utility functions from a sponsor's as well as from a public health perspective, reflecting actual civil interests. Examples of optimized trial designs obtained by numerical optimization are presented for both perspectives.
Comparing the buckling strength of spherical shells with dimpled versus bumpy defects
Creators: name: Abbasi, Arefeh
name: Derveni, Fani
name: Reis, Pedro M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate the effect of defect geometry in dictating the sensitivity of the critical buckling conditions of spherical shells under external pressure loading. Specifically, we perform a comparative study between shells containing dimpled (inward) versus bumpy (outward) Gaussian defects. The former has become the standard shape in many recent shell-buckling studies, whereas the latter has remained mostly unexplored. We employ finite-element simulations, which were validated previously against experiments, to compute the knockdown factors for the two cases while systematically exploring the parameter space of the defect geometry. For the same magnitudes of the amplitude and angular width of the defect, we find that shells containing bumpy defects consistently exhibit significantly higher knockdown factors than shells with the more classic dimpled defects. Furthermore, the relationship of the knockdown as a function of the amplitude and width of the defect is qualitatively different between the two cases, which also exhibit distinct post-buckling behavior. A speculative interpretation of the results is provided based on the qualitative differences in the mean-curvature profiles of the two cases.
La Unidad 4 Liderazgo y gestión del cambio en entornos universitarios
Creators: name: Rivas, Jorge Luis Hilario
Publisher: name: Zenodo
Year: 2023
Subjects: Liderazgo
Equipo

description: Estilos de liderazgo en la educación superior. Gestión del cambio y resistencia organizacional. Construcción y gestión de equipos de trabajo.
Commensal Transient Searches in Eight Short Gamma Ray Burst Fields
Creators: name: Chastain, S. I.
name: van der Horst, A. J.
name: Rowlinson, A.
name: Rhodes, L.
name: Andersson, A.
name: Diretse, R.
name: Fender, R. P.
name: Woudt, P. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A new generation of radio telescopes with excellent sensitivity, instantaneous {\it uv} coverage, and large fields of view, are providing unprecedented opportunities for performing commensal transient searches. Here we present such a commensal search in deep observations of short gamma-ray burst fields carried out with the MeerKAT radio telescope in South Africa at 1.3 GHz. These four hour observations of eight different fields span survey lengths of weeks to months. We also carry out transient searches in time slices of the full observations, at timescales of 15 minutes, and 8 seconds. We find 122 variable sources on the long timescales, of which 52 are likely active galactic nuclei, but there are likely also some radio flaring stars. While the variability is intrinsic in at least two cases, most of it is consistent with interstellar scintillation. In this study, we also place constraints on transient rates based on state-of-the-art transient simulations codes. We place an upper limit of $2\times10^{-4}$ transients per day per square degree for transients with peak flux of 5 mJy, and an upper limit of $2.5\times10^{-2}$ transients per day per square degree for transients with a fluence of 10 Jy ms, the minimum detectable fluence of our survey.
A "Rosetta Stone" for protoplanetary disks: The synergy of multi-wavelength observations
Creators: name: Sicilia-Aguilar, A.
name: Banzatti, A.
name: Carmona, A.
name: Stolker, T.
name: Kama, M.
name: Mendigutía, I
name: Garufi, A.
name: Flaherty, K.
name: van der Marel, N.
name: Greaves, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The recent progress in instrumentation and telescope development has brought us different ways to observe protoplanetary disks, including interferometers, space missions, adaptive optics, polarimetry, and time- and spectrally-resolved data. While the new facilities have changed the way we can tackle the existing open problems in disk structure and evolution, there is a substantial lack of interconnection between different observing techniques and their user communities. Here, we explore the complementarity of some of the state-of-the-art observing techniques, and how they can be brought together in a collective effort to understand how disks evolve and disperse at the time of planet formation. This paper was born at the "Protoplanetary Discussions" meeting in Edinburgh, 2016. Its goal is to clarify where multi-wavelength observations of disks converge in unveiling disk structure and evolution, and where they diverge and challenge our current understanding. We discuss caveats that should be considered when linking results from different observations, or when drawing conclusions based on limited datasets (in terms of wavelength or sample). We focus on disk properties that are currently being revolutionized by multi-wavelength observations. Specifically: the inner disk radius, holes and gaps and their link to large-scale disk structures, the disk mass, and the accretion rate. We discuss how the links between them, as well as the apparent contradictions, can help us to disentangle the disk physics and to learn about disk evolution.
description: Accepted for publication in PASA. 37 pages, 9 figures, 1 table. Revised version: corrected problem in Fig 2
title: Walter Benjamin's Transit: A Destructive Tour of Modernity
Creators: name: Polsky, Stephanie
Publisher: name: Goldsmiths, University of London
Year: 2003

description: This thesis focuses specifically on Walter Benjamin's philosophical insights into the emerging climate of fascism, in Europe, between the two World Wars. These were inseparable from a challenge to modem understandings of history. For Benjamin official histories function to record the spoils of the victors effectively erasing the losing side from the annals of history. This has particular resonance given that Benjamin, a German Jew, was himself under constant threat of cultural erasure during the course of his writing, thus making him in a way the embodiment of a certain constellation of fascist forces. The theme of an 'embodied' fascism will be applied to Benjamin's corpus as well as to other's directly involved and affected by the rise of German fascism. Throughout this thesis I chart the ways in which Benjamin applies alternative methods to reading history, in order to unearth the violence beyond his present situation of fascism. Benjamin argued that violence subtends all modern state function, insofar as its power is won and maintained by the silent suppression of its citizens. Such suppression was the cause of periodic eruptions of violence with society. It was built into the very fibre of what we call civil society as it is generated through culture. This reading of Benjamin hones in on vital areas of modern cultural production such as rhetoric, photography, language, spatiality and communications technology and attempts to situate them within the scope of Benjamin's concerns about violence. In addition to critical theory, my research incorporates the field cultural studies, as Benjamin's main concern was with the ideological role that certain cultural objects played within the social economy in the era that preceded German fascism's consolidation of power. Benjamin's investigations of violence, and its relationship to various technologies at the start of the 20th Century, form an invaluable source of insight with which to evaluate the current critical debates about fascism.
Experimentally derived axial stress- strain relations for two-dimensional materials such as monolayer graphene
Creators: name: Androulidakis, Ch.
name: Tsoukleri, G.
name: Koutroumanis, N.
name: Gkikas, G.
name: Pappas, P.
name: Parthenios, J.
name: Papagelis, K.
name: Galiotis, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A methodology is presented here for deriving true experimental axial stress-strain curves in both tension and compression for monolayer graphene through the shift of the 2D Raman peak that is present in all graphitic materials. The principle behind this approach is the observation that the shift of the 2D wavenumber as a function of strain for different types of PAN based fibres is a linear function of their Young's moduli and, hence, the corresponding value of the shift of the 2D Raman peak over axial stress is, in fact, a constant. By moving across the length scales we show that this value is also valid at the nanoscale as it corresponds to the in plane breathing mode of graphene that is present in both PAN based fibres and monolayer graphene. Hence, the values of the shift of the 2D Raman peak can be easily converted to values of stress in the linear elastic region without the aid of modelling or the need to resort to cumbersome experimental procedures for obtaining the axial force transmitted to the material and the cross sectional area of the two dimensional membrane.
Inductive intrinsic localized modes in a 1D nonlinear electric transmission line
Creators: name: Sato, M.
name: Mukaide, T.
name: Nakaguchi, T.
name: Sievers, A. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The experimental properties of intrinsic localized modes (ILM) have long been compared with theoretical dynamical lattice models that make use of nonlinear onsite and/or nearest neighbor intersite potentials. Here it is shown for a 1-D lumped electrical transmission line a nonlinear inductive component in an otherwise linear parallel capacitor lattice makes possible a new kind of ILM outside the plane wave spectrum. To simplify the analysis the nonlinear inductive current equations are transformed to flux transmission line equations with analogue onsite hard potential nonlinearities. Approximate analytic results compare favorably with those obtained from a driven damped lattice model and with eigenvalue simulations. For this mono-element lattice ILMs above the top of the plane wave spectrum are the result. We find that the current ILM is spatially compressed relative to the corresponding flux ILM. Finally this study makes the connection between the dynamics of mass and force constant defects in the harmonic lattice and ILMs in a strongly anharmonic lattice.
InTheMED D4.4 Report on Simulation-Based Scenario Analyses and Policy Design Files
Creators: name: Saysel, Ali Kerem
name: Daloğlu Çetinkaya, İrem
name: Uygur, İzel
name: Copty, Nadim
Publisher: name: Zenodo
Year: 2023
Subjects: Simulation-Based Scenario Analysis
Integrated Policy Analysis
System Dynamics

description: This is the documentation of D4.4 of the “Innovative and Sustainable Groundwater Management in the Mediterranean” Grant Agreement Number 1923 project. The outputs of the simulation-based scenario analyses and policy design are reported in this deliverable.
description: This project is part of the PRIMA Programme supported by the European Union's Horizon 2020 Research and Innovation Programme under Grant Agreement No 1923.
Energy loss as the origin of an universal scaling law of the elliptic flow
Creators: name: Andrés, Carlota
name: Braun, Mikhail
name: Pajares, Carlos
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It is shown that the excellent scaling of the elliptic flow found for all centralities, species and energies from RHIC to the LHC for $p_{T}$ less than the saturation momentum is a consequence of the energy lost by a parton interacting with the color field produced in a nucleus-nucleus collision. In particular, the deduced shape of the scaling curve describes correctly all the data. We discuss the possible extensions to higher $p_{T}$, proton-nucleus and proton-proton collisions as well as higher harmonics.
description: 10 pages, 2 figures
Empowering Visually Impaired Individuals: A Novel Use of Apple Live Photos and Android Motion Photos
Creators: name: Khoshsirat, Seyedalireza
name: Kambhamettu, Chandra
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Numerous applications have been developed to assist visually impaired individuals that employ a machine learning unit to process visual input. However, a critical challenge with these applications is the sub-optimal quality of images captured by the users. Given the complexity of operating a camera for visually impaired individuals, we advocate for the use of Apple Live Photos and Android Motion Photos technologies. In this study, we introduce a straightforward methodology to evaluate and contrast the efficacy of Live/Motion Photos against traditional image-based approaches. Our findings reveal that both Live Photos and Motion Photos outperform single-frame images in common visual assisting tasks, specifically in object classification and VideoQA. We validate our results through extensive experiments on the ORBIT dataset, which consists of videos collected by visually impaired individuals. Furthermore, we conduct a series of ablation studies to delve deeper into the impact of deblurring and longer temporal crops.
Diffusion in plasma: the Hall effect, compositional waves, and chemical spots
Creators: name: Urpin, Vadim
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We consider diffusion caused by a combined influence of the electric current and the Hall effect, and argue that such diffusion can form inhomogeneities of the chemical composition in plasma. The considered mechanism can be responsible for a formation of element spots in laboratory and astrophysical plasmas. This current-driven diffusion can be accompanied by propagation of a particular type waves in which the impurity number density oscillate alone. These compositional waves exist if the magnetic pressure in plasma is much greater than the gas pressure,
description: 12 pages, to appear in Plasma Phys. Reports. arXiv admin note: substantial text overlap with arXiv:1605.07893
The use of an expert system shell as a prototyping tool for defining user requirements and capturing knowledge
Creators: name: Ong, Enn Siok Ean.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Hybrid quantum-classical dynamics of pure-dephasing systems
Creators: name: Manfredi, Giovanni
name: Rittaud, Antoine
name: Tronci, Cesare
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the interaction dynamics of a classical oscillator and a quantum two-level system for different pure-dephasing Hamiltonians of the type $\widehat{H}(q,p)=H_C(q,p)\boldsymbol{1}+H_I(q,p)\widehatσ_z$. This type of systems represents a severe challenge for popular hybrid quantum-classical descriptions. For example, in the case of the common Ehrenfest model, the classical density evolution is shown to decouple entirely from the pure-dephasing quantum dynamics. We focus on a recently proposed hybrid wave equation that is based on Koopman's wavefunction description of classical mechanics. This model retains quantum-classical correlations whenever a coupling potential is present. Here, several benchmark problems are considered and the results are compared with those arising from fully quantum dynamics. A good agreement is found for a series of study cases involving harmonic oscillators with linear and quadratic coupling, as well as time-varying coupling parameters. In all these cases the classical evolution coincides exactly with the oscillator dynamics resulting from the fully quantum description. In the special case of time-independent coupling involving a classical oscillator with varying frequency, the quantum Bloch rotation exhibits peculiar features that escape from the hybrid description. In addition, nonlinear corrections to the harmonic Hamiltonian lead to an overall growth of decoherence at long times, which is absent in the fully quantum treatment.
description: 24 pages, 10 figures. Contribution to the Special Collection "Koopman methods in classical and quantum-classical mechanics" in the Journal of Physics A
Investigations of the $D$-multi-$ρ$ interactions
Creators: name: Xiao, C. W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the present work, which aims at searching for bound sates, the interactions of the $D$-multi-$ρ$ systems are investigated by means of the formalism of the fixed-center-approximation to Faddeev equations. Reproducing the states of $f_2 (1270)$ and $D_1 (2420)$ dynamically in the two-body $ρρ$ and $ρD$ interactions, respectively, as the clusters of the fixed center approximation, the state of $D(3000)^0$ is found as a molecule of $D-f_2$ or $ρ-D_1$ structures in the three-body interactions, where we determine its quantum number $J^P = 2^-$ and find another possible state of $D_2 (3100)$ with isospin $I=3/2$. In our results, there are some other predictions with uncertainties, a $D_3 (3160)$ state with $I(J^P) = \frac{1}{2} (3^+)$ in the four-body interactions, a narrow $D_4 (3730)$ state with $I(J^P) = \frac{1}{2} (4^-)$, a wide $D_4 (3410)$ state of $I(J^P) = \frac{1}{2} (4^-)$, and another wide $D_4 (3770)$ state but with $I(J^P) = \frac{3}{2} (4^-)$ in the five-body interactions, and a $D_5 (3570)$ state with $I(J^P) = \frac{1}{2} (5^+)$ in the six-body interactions. Our results are consistent with the findings of quark models.
description: References added; welcome to comment
Efficient Rotating Synthetic Aperture Radar Imaging via Robust Sparse Array Synthesis
Creators: name: Zhao, Wei
name: Wen, Cai
name: Yuan, Quan
name: Zheng, Rong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Rotating Synthetic Aperture Radar (ROSAR) can generate a 360$^\circ$ image of its surrounding environment using the collected data from a single moving track. Due to its non-linear track, the Back-Projection Algorithm (BPA) is commonly used to generate SAR images in ROSAR. Despite its superior imaging performance, BPA suffers from high computation complexity, restricting its application in real-time systems. In this paper, we propose an efficient imaging method based on robust sparse array synthesis. It first conducts range-dimension matched filtering, followed by azimuth-dimension matched filtering using a selected sparse aperture and filtering weights. The aperture and weights are computed offline in advance to ensure robustness to array manifold errors induced by the imperfect radar rotation. We introduce robust constraints on the main-lobe and sidelobe levels of filter design. The resultant robust sparse array synthesis problem is a non-convex optimization problem with quadratic constraints. An algorithm based on feasible point pursuit and successive convex approximation is devised to solve the optimization problem. Extensive simulation study and experimental evaluations using a real-world hardware platform demonstrate that the proposed algorithm can achieve image quality comparable to that of BPA, but with a substantial reduction in computational time up to 90%.
Distribution of Cold ($\lesssim 300$K) Atomic Gas in Galaxies: Results from the GBT HI Absorption Survey Probing the Inner Halos ($ρ<20$kpc) of Low-z Galaxies
Creators: name: Borthakur, Sanchayeeta
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the Green Bank Telescope absorption survey of cold atomic hydrogen ($\lesssim 300$K) in the inner halo of low-redshift galaxies. The survey aims to characterize the cold gas distribution and to address where condensation - the process where ionized gas accreted by galaxies condenses into cold gas within the disks of galaxies - occurs. Our sample consists of 16 galaxy-quasar pairs with impact parameters of $\le$ 20kpc. We detected an HI absorber associated with J0958+3222 (NGC 3067) and HI emission from six galaxies. We also found two \ion{Ca}{2} absorption system in the archival SDSS data associated with galaxies J0958+3222 and J1228+3706, although the sample was not selected based on the presence of metals in absorption. Our detection rate of HI absorbers with optical depths of $\ge 0.06$ is $\sim$7\%. We also find that cold HI phase ($\lesssim$300K) is 44($\pm$18)\% of the total atomic gas in the sightline probing J0958+3222. We find no correlation between the peak optical depth and impact parameter or stellar and HI radii normalized impact parameters, $ρ/\rm R_{90}$ and $ρ/\rm R_{HI}$. We conclude that the process of condensation of inflowing gas into cold ($\lesssim$ 300K) HI occurs at the $ρ<< 20$kpc. However, the warmer phase of neutral gas (T $\sim$ 1000K) can exists out to much larger distances as seen in emission maps. Therefore, the process of condensation of warm to cold HI is likely occurring in stages from ionized to warm HI in the inner halo and then to cold HI very close to the galaxy disk.
description: Accepted for publication in ApJ. Contains 12 pages, 7 figures, and 2 tables
Sachliche Erschliessung von Aufsatznachweisen zu Covid 19 in Contents Literaturverwaltung II
Creators: name: Hehl, Hans
Publisher: name: Zenodo
Year: 2020
Subjects: Literature Management System, Journal Articles, Covid19

description: Die sachliche Erschliessung von Aufsatznachweisen zu covid19 wird durch eine enge Verbindung mit einer aufwendig erstellten Datenbank von Zeitschriftentiteln erreicht. Eine grosse übersichtliche Auswahl von sachlichen Gesichtspunkten wird angeboten.