cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Topology optimization of anisotropic elastic metamaterial with broadband double-negative index
Creators: name: Dong, Hao-Wen
name: Zhao, Sheng-Dong
name: Wang, Yue-Sheng
name: Zhang, Chuanzeng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Aiming at the promising superlensing for the medical ultrasonic and detection, the double-negative metamaterials which possess the negative mass density and elastic modulus simultaneously can be acted as the ideal superlens for breaking the diffraction limit. In this paper, we use topology optimization to design the two-dimensional single-phase anisotropic elastic metamaterials with broadband double-negative indices and numerically demonstrate the superlensing at the deep-subwavelength scale. We also discuss the impact of several parameters adopted in the objective function and constraints on the optimized results. Unlike all previous reported mechanisms, our optimized structures exhibit the new quadrupolar or multipolar resonances for the negative mass density, negative longitudinal and shear moduli. In addition, we observe the negative refraction of transverse waves in a single-phase material. Most structures can serve as the anisotropic zero-index metamaterials for the longitudinal or transverse wave at a certain frequency. The cloaking effect is demonstrated for both the longitudinal and transverse waves. Moreover, with the particular constraints in optimization, we design a super-anisotropic metamaterial exhibiting the double-negative and hyperbolic dispersions along two principal directions, respectively. Our optimization work provides a robust computational approach to negative index engineering in elastic metamaterials and guides design of other kinds of metamaterials, including the electromagnetic and acoustic metamaterials. The unusual properties of our optimized structures are likely to inspire new ideas and novel applications including the low-frequency vibration attenuation, flat lens and ultrasonography for elastic waves in the future.
description: 37 pages, 18 figures
Few-body quantum physics with strongly interacting Rydberg polaritons
Creators: name: Bienias, Przemyslaw
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present an extension of our recent paper [Bienias et al., Phys. Rev. A 90, 053804 (2014)] in which we demonstrated the scattering properties and bound-state structure of two Rydberg polaritons, as well as the derivation of the effective low-energy many-body Hamiltonian. Here, we derive a microscopic Hamiltonian describing the propagation of Rydberg slow light polaritons in one dimension. We describe possible decoherence processes within a Master equation approach, and derive equations of motion in a Schroedinger picture by using an effective non-Hermitian Hamiltonian. We illustrate diagrammatic methods on two examples: First, we show the solution for a single polariton in an external potential by exact summation of Feynman diagrams. Secondly, we solve the two body problem in a weakly interacting regime exactly.
Evolutionary history of four binary blue stragglers from the globular clusters ωCen, M55, 47 Tuc and NGC 6752
Creators: name: Stepien, K.
name: Pamyatnykh, A. A.
name: Rozyczka, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. Origin and evolution of blue stragglers in globular clusters is still a matter of debate. Aims. The aim of the present investigation is to reproduce the evolutionary history of four binary blue stragglers in four different clusters, for which precise values of global parameters are known. Methods. Using the model for cool close binary evolution, developed by one of us (KS), progenitors of all investigated binaries were found and their parameters evolved into the presently observed values. Results. The results show that the progenitors of the binary blue stragglers are cool close binaries with period of a few days, which transform into stragglers by rejuvenation of the initially less massive component by mass transfer from its more massive companion overflowing the inner critical Roche surface. The parameters of V209 from ωCen indicate that the binary is substantially enriched in helium. This is an independent and strong evidence for the existence of the helium rich subpopulation in this cluster.
description: Accepted by Astronomy and Astrophysics
Visible-Light Assisted Covalent Surface Functionalization of Reduced Graphene Oxide Nanosheets with Arylazo Sulfones
Creators: name: Lombardi, Lorenzo
name: Kovtun, Alessandro
name: Mantovani, Sebastiano
name: Bertuzzi, Giulio
name: Favaretto, Laura
name: Bettini, Cristian
name: Palermo, Vincenzo
name: Melucci, Manuela
name: Bandini, Marco
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present an environmentally benign methodology for the covalent functionalization (arylation) of reduced graphene oxide (rGO) nanosheets with arylazo sulfones. A variety of tagged aryl units were conveniently accommodated at the rGO surface via visible light irradiation of suspensions of carbon nanostructured materials in aqueous media. Mild reaction conditions, absence of photosensitizers, functional group tolerance and high atomic fractions (XPS analysis) represent some of the salient features characterizing the present methodology. Control experiments for the mechanistic elucidation (Raman analysis) and chemical nanomanipulation of the tagged rGO surfaces are also reported.
Morphological Transitions during Melting of Small Cylindrical Aggregates
Creators: name: Jin, Chenyu
name: Riegler, Hans
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Most studies on melting under confinement focus only on the solid and liquid melt phases. Despite of its ubiquity, contributions from the capillary interface (liquid / vapor interface) are often neglected. In this study the melting behavior of small cylindrical aggregates in vapor attached to planar surfaces is analyzed. For the assumed boundary conditions (cylindrical solid with a non wetting top plane and a wettable side wall) solid and the liquid phases can coexist within a certain temperature range. Due to capillary instability, the liquid phase can form either an axisymmetric rouloid morphology or, above a certain threshold liquid volume fraction, a bulge coexisting with a rouloid-like section. The corresponding melting points are different. The analysis explicitly describes the behavior of a real system of small aggregates of long chain alkanes on planar substrates. It also gives qualitative insights into the melting behavior of small aggregates with anisotropic wetting behaviors in general. It reveals in particular how melting points and melting pathways depend on the energetic respectively morphological pathways leading to complete melting.
description: 12 pages, 7 figures. J. Phys. Chem. C, accepted
Interacting quintessence cosmology from Noether symmetries: comparing theoretical predictions with observational data
Creators: name: Piedipalumbo, Ester
name: Vignolo, Stefano
name: Feola, Pasquale
name: Capozziello, Salvatore
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the framework of scalar-tensor gravity, we consider non-flat interacting quintessence cosmology where a scalar field is interacting with dark matter. Such a scalar field can be a standard or a phantom one. We use the Noether Symmetry Approach to obtain general exact solutions for cosmological equations and to select scalar-field self-interaction potentials. It turns out that the found solutions can reproduce the accelerated expansion of the Universe, and are compatible with observational dataset, as the SNeIa Pantheon data, gamma ray bursts Hubble diagram, and direct measurements of the Hubble parameter.
description: 30 pages, 7 figures, in press on: Phys.Dark Univ. (2023) 101274
The temperature dependence of FeRh's transport properties
Creators: name: Mankovsky, S.
name: Polesya, S.
name: Chadova, K.
name: Ebert, H.
name: Staunton, J. B.
name: Gruenbaum, T.
name: Schoen, M. A. W.
name: Back, C. H.
name: Chen, X. Z.
name: Song, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The finite-temperature transport properties of FeRh compounds are investigated by first-principles Density Functional Theory-based calculations. The focus is on the behavior of the longitudinal resistivity with rising temperature, which exhibits an abrupt decrease at the metamagnetic transition point, $T = T_m$ between ferro- and antiferromagnetic phases. A detailed electronic structure investigation for $T \geq 0$ K explains this feature and demonstrates the important role of (i) the difference of the electronic structure at the Fermi level between the two magnetically ordered states and (ii) the different degree of thermally induced magnetic disorder in the vicinity of $T_m$, giving different contributions to the resistivity. To support these conclusions, we also describe the temperature dependence of the spin-orbit induced anomalous Hall resistivity and Gilbert damping parameter. For the various response quantities considered the impact of thermal lattice vibrations and spin fluctuations on their temperature dependence is investigated in detail. Comparison with corresponding experimental data finds in general a very good agreement.
DDI Codebook, DDI Lifecycle, et DDI Cross Domain Integration : cas d'usage et objectifs
Creators: name: DDI Training Group
Publisher: name: Zenodo
Year: 2023
Subjects: Data Documentation Initiative
Métadonnées
DDI Codebook
DDI Lifecycle
DDI Cross Domain Integration

description: Une présentation des différentes fonctionnalités prises en charge par les différents produits de travail DDI et du processus permettant de décider lequel est le mieux adapté à une mise en œuvre spécifique.
Planar harmonic and monogenic polynomials of type A
Creators: name: Dunkl, Charles F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33C67, 33C55, 33C80, 15A66

description: Harmonic polynomials of type A are polynomials annihilated by the Dunkl Laplacian associated to the symmetric group acting as a reflection group on $\mathbb{R}^{N}$. The Dunkl operators are denoted by $T_{j}$ for $1\leq j\leq N$, and the Laplacian $Δ_κ=\sum_{j=1}^{N}T_{j}^{2}$. This paper finds the homogeneous harmonic polynomials annihilated by all $T_{j}$ for $j>2$. The structure constants with respect to the Gaussian and sphere inner products are computed. These harmonic polynomials are used to produce monogenic polynomials, those annihilated by a Dirac-type operator.
description: 20 pages
A fresh look at linear cosmological constraints on a decaying dark matter component
Creators: name: Poulin, Vivian
name: Serpico, Pasquale D.
name: Lesgourgues, Julien
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a cosmological model in which a fraction $f$ of the Dark Matter (DM) is allowed to decay in an invisible relativistic component, and compute the resulting constraints on both the decay width (or inverse lifetime) $Γ$ and $f$ from purely gravitational arguments. We report a full derivation of the Boltzmann hierarchy, correcting a mistake in previous literature, and compute the impact of the decay --as a function of the lifetime-- on the CMB and matter power spectra. From CMB only, we obtain that no more than 3.8 % of the DM could have decayed in the time between recombination and today (all bounds quoted at 95 % CL). We also comment on the important application of this bound to the case where primordial black holes constitute DM, a scenario notoriously difficult to constrain. For lifetimes longer than the age of the Universe, the bounds can be cast as $fΓ< 6.3\times10^{-3}$ Gyr$^{-1}$. For the first time, we also checked that degeneracies with massive neutrinos are broken when information from the large scale structure is used. Even secondary effects like CMB lensing suffice to this purpose. Decaying DM models have been invoked to solve a possible tension between low redshift astronomical measurements of $σ_8$ and $Ω_{\rm m}$ and the ones inferred by Planck. We reassess this claim finding that with the most recent BAO, HST and $σ_8$ data extracted from the CFHT survey, the tension is only slightly reduced despite the two additional free parameters, loosening the bound to $fΓ< 15.9\times10^{-3}$ Gyr$^{-1}$. The bound however improves to $fΓ< 5.9\times10^{-3}$ Gyr$^{-1}$ if only data consistent with the CMB are included. This highlights the importance of establishing whether the tension is due to real physical effects or unaccounted systematics, for settling the reach of achievable constraints on decaying DM.
description: 30p, 11 figures, comments welcome
Global boiling: Drinking alcoholic beverages in a hot air environment may become toxic to your internal organs
Creators: name: Tangjarukij, Chanthana
name: Pui-Ock, Sittisak
Publisher: name: Zenodo
Year: 2023
Subjects: ethanol, high ambient temperature, intestine damage

description: The combined alcohol-containing beverage and high-temperature exposure at 40 °C has an impact on hematological profile and increases the severity of intestinal damage i.e. villi necrosis.
Lithium transport through Lithium-ion battery cathode coatings
Creators: name: Xu, Shenzhen
name: Jacobs, Ryan M.
name: Nguyen, Ha M.
name: Hao, Shiqiang
name: Mahanthappa, Mahesh
name: Wolverton, Chris
name: Morgan, Dane
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The surface coating of cathodes using insulator films has proven to be a promising method for high-voltage cathode stabilization in Li-ion batteries. However, there is still substantial uncertainty about how these films function, specifically with regard to important coating design principles such as lithium solubility and transport through the films. This study uses Density Functional Theory to examine the diffusivity of interstitial lithium in crystalline α-$AlF_3$, α-$Al_2O_3$, m-$ZrO_2$, c-MgO, and α-quartz $SiO_2$, which provide benchmark cases for further understanding of insulator coatings in general. In addition, we propose an Ohmic electrolyte model to predict resistivities and overpotential contributions under battery operating conditions. For the crystalline materials considered we predict that Li+ diffuses quite slowly, with a migration barrier larger than 0.9 eV in all crystalline materials except α-quartz $SiO_2$, which is predicted to have a migration barrier of 0.276 eV along <001>. These results suggest that the stable crystalline forms of these insulator materials, except for oriented α-quartz $SiO_2$, are not practical for conformal cathode coatings. Amorphous $Al_2O_3$ and $AlF_3$ have higher Li+ diffusivities than their crystalline counterparts. Our predicted amorphous $Al_2O_3$ resistivity (1789 MΩm) is near the top of the range of fitted resistivities extracted from previous experiments on nominal $Al_2O_3$ coatings (7.8 to 913 MΩm) while our predicted amorphous $AlF_3$ resistivity (114 MΩm) is close to the middle of the range. These comparisons support our framework for modeling and understanding the impact on overpotential of conformal coatings in terms of their fundamental thermodynamic and kinetic properties, and support that these materials can provide practical conformal coatings in their amorphous form.
Beyond the Library Collections: Proceedings of the 2022 Erasmus Staff Training Week at ULiège Library
Creators: name: Renaville, François
name: Prosmans, Fabienne
Publisher: name: arXiv
Year: 2023
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences
subject: H.3.7; H.3.6; H.3.4; H.3.5

description: No library can buy or hold everything its patrons need. At a certain point, librarians need to pool their resources and collaborate to provide access to what they don't have: Collaboration and partnership, centralized and shared collection storage, digitization projects, interlibrary loan and resource sharing, purchase on demand, PDA and EBA are notably key to success. The 2022 edition of the Erasmus Mobility Staff Training week organized at the University of Liège Library focused on services, projects and policies that libraries can deploy and promote to increase and ease access to materials that do not belong to their print or electronic holdings. More than 20 librarians, managers, and researchers in library science share their experiences and visions in this book. Keywords: Collaboration between libraries; Collection Development; Academic Libraries; Research Libraries; Interlibrary Loan; ILL; Resource Sharing; Purchase on Demand; Patron-Driven Acquisition; PDA; Evidence-Based Acquisition; EBA; Alma; Koha; RapidILL; Impala; Subito; Library systems; Digitalization; Workflows
description: 235 pages
Secret key capacity of the thermal-loss channel: Improving the lower bound
Creators: name: Ottaviani, Carlo
name: Laurenza, Riccardo
name: Cope, Thomas P. W.
name: Spedalieri, Gaetana
name: Braunstein, Samuel L.
name: Pirandola, Stefano
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the secret key capacity of the thermal loss channel, which is modeled by a beam splitter mixing an input signal mode with an environmental thermal mode. This capacity is the maximum value of secret bits that two remote parties can generate by means of the most general adaptive protocols assisted by unlimited and two-way classical communication. To date, only upper and lower bounds are known. The present work improves the lower bound by resorting to Gaussian protocols based on suitable trusted-noise detectors.
description: 10 pages, 2 figures
BENEFÍCIOS DA ATIVIDADE FÍSICA NA GESTAÇÃO: UMA ANÁLISE DE ENFERMAGEM
Creators: name: Moreira Rodrigues, Francielle Moreira Rodrigues
Publisher: name: Zenodo
Year: 2024
Subjects: Gravidez; Saúde, Prevenção.

description: O presente artigo tem como objetivo discutir a respeito da eficácia e benefícios da prática de atividade física durante a gestação. Embora a opinião popular por muito tempo tenha sido de que está prática traria complicações para a gestante e/ou para o feto, estudos mais recentes apresentam novas conclusões. Através de um estudo de caso, o trabalho visa discutir benefícios adquiridos por gestantes após o início de uma rotina de exercícios físicos que variam de leve à moderado, salvo os casos em que a gestante apresente problemas de saúde preliminar à gravidez ou gravidez de risco. Sabe-se que a atividade física regular é fundamental para a saúde física e emocional da gestante, visto que diminui dores musculares e estresse, além de prevenir a obesidade na gravidez.
High-rate quantum key distribution exceeding 110 Mb/s
Creators: name: Li, Wei
name: Zhang, Likang
name: Tan, Hao
name: Lu, Yichen
name: Liao, Sheng-Kai
name: Huang, Jia
name: Li, Hao
name: Wang, Zhen
name: Mao, Hao-Kun
name: Yan, Bingze
name: Li, Qiong
name: Liu, Yang
name: Zhang, Qiang
name: Peng, Cheng-Zhi
name: You, Lixing
name: Xu, Feihu
name: Pan, Jian-Wei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum key distribution (QKD) can provide fundamentally proven security for secure communication. Toward application, the secret key rate (SKR) is a key figure of merit for any QKD system. So far, the SKR has been limited to about a few megabit-per-second. Here we report a QKD system that is able to generate key at a record high SKR of 115.8 Mb/s over 10-km standard fibre, and to distribute key over up to 328 km of ultra-low-loss fibre. This attributes to a multi-pixel superconducting nanowire single-photon detector with ultrahigh counting rate, an integrated transmitter that can stably encode polarization states with low error, a fast post-processing algorithm for generating key in real time and the high system clock-rate operation. The results demonstrate the feasibility of practical high-rate QKD with photonic techniques, thus opening its possibility for widespread applications.
Results from the ANTARES Neutrino Telescope
Creators: name: Spurio, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A primary goal of a deep-sea neutrino telescopes as ANTARES is the search for astrophysical neutrinos in the TeV-PeV range. ANTARES is today the largest neutrino telescope in the Northern hemisphere. After the discovery of a cosmic neutrino diffuse flux by the IceCube, the understanding of its origin has become a key mission in high-energy astrophysics. ANTARES makes a valuable contribution for sources located in the Southern sky thanks to its excellent angular resolution in both the muon channel and the cascade channel (induced by all neutrino flavors). Assuming various spectral indexes for the energy spectrum of neutrino emitters, the Southern sky and in particular central regions of our Galaxy are studied searching for point-like objects and for extended regions of emission. In parallel, by adopting a multimessenger approach, based on time and/or space coincidences with other cosmic probes, the sensitivity of such searches can be considerably augmented. ANTARES has participated to a high-energy neutrino follow-up of the gravitational wave signal GW150914, providing the first constraint on high-energy neutrino emission from a binary black hole coalescence. ANTARES has also performed indirect searches for Dark Matter, yielding limits for the spin-dependent WIMP-nucleon cross-section that improve upon those of current direct-detection experiments.
description: Proceedings of the CRIS2016 (10th Cosmic Ray International Seminar) - Ischia (NA) Italy, July 4-8, 2016
Past//forward : retrofuturism, science fiction, and toxic nostalgia
Creators: name: Rogers, Courtney June
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Science fiction
Futurism
Nostalgia
Retrofuturism
Syfy

description: How we look at the world has changed vastly over the course of the human experience, and how we imagine humans within the context of the world even more so. The ability to center the human narrative in the context of history seems to be the first thing creatives try to do, but even more so they work to center themselves in the context of imagined futures. In this MFA thesis I seek to explore how the relationship between science fiction, popular media, and nostalgia work to preserve a more concise version of the contemporary moment, and how we can use this information to acknowledge what the cultural attitudes were at the time. The goal of this thesis exploration is not to determine what hundreds or even thousands of years to come will look like, it is difficult to imagine what the distant future will embody, but through this process I seek rather to explore what the collective pop culture of the recent past thought was important enough to push forward into the inevitable future. The project working title Past//Forward seeks to explore previous decades' attempts to imagine the future and what those visual media creations can tell us about the societal norms, cultural values, and fears and hopes they collectively deemed important enough to push ad infinitum into the future. This is not a comprehensive overview of the idea of retro futurism as a whole, this iteration of the ideas I am exploring focuses almost entirely on western media and science fiction in the English language through the twentieth century. My primary goal for this reflective practitioner document is to incorporate elements of retro science fiction materials to construct a more modern narrative through the creation of an illustrated book. I will do so by partially condensing my vast catalog of science fiction source material, as well as giving some distance to analyze material in cultural context which is much harder to do as history is being actively written around us. The ability to analyze and engage with the previous decades' forays into the distant future can hopefully give us more insight into what they aspired and fretted over from the future through how they chose to present it in the media.
Anharmonicity of multi-octupole-phonon excitations in $^{208}$Pb: analysis with multi-reference covariant density functional theory and subbarrier fusion of $^{16}$O+$^{208}$Pb
Creators: name: Yao, J. M.
name: Hagino, K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We discuss anharmonicity of the multi-octupole-phonon states in $^{208}$Pb based on a covariant density functional theory, by fully taking into account the interplay between the quadrupole and the octupole degrees of freedom. Our results indicate the existence of a large anharmonicity in the transition strengths, even though the excitation energies are similar to those in the harmonic limit. We also show that the quadrupole-shape fluctuation significantly enhances the fragmentation of the two-octupole-phonon states in $^{208}$Pb. Using those transition strengths as inputs to coupled channels calculations, we then discuss the fusion reaction of $^{16}$O+$^{208}$Pb at energies around the Coulomb barrier. We show that the anharmonicity of the octupole vibrational excitation considerably improves previous coupled-channels calculations in the harmonic oscillator limit, significantly reducing the height of the main peak in the fusion barrier distribution.
description: 5 pages with 4 figures, to be published in Phys. Rev. C as a Rapid Communication
title: New from the old : integrating preservation for urban revitalization through GIS spatial analysis and assessment modeling
title: Integrating preservation for urban revitalization through GIS spatial analysis and assessment modeling
titleType: AlternativeTitle
Creators: name: Park, Hanbaek
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: Philadelphia
Old city
Brick
Row houses
Urban renewal
Assessment model
Revitalization

description: Many older cities in the Midwest and Northeast of the U.S. have faced decline from early as 1950s due to drastic decrease in population. This has led to many inner city neighborhoods once vibrant and active to fall into dilapidation and dereliction. In result, a vast number of buildings, in many cases characteristic to the greater urban context, were abandoned and left to decay. Philadelphia, one of these older cities, is known for its unique brick masonry row houses that were built mostly in the city’s founding era. Many of these row houses have been left untouched from urban renewal and similar redevelopments due to high demolition costs, and have endured time and weather by their resistant materiality. This unique urban condition has also kept open an opportunity for implementing revitalization through the existing. The study looks into inter city neighborhoods within Philadelphia that are facing decline to suggest integrating preservation interests for revitalization. Especially, it focuses on the neighborhood districts of Lower North, North, and Upper North Philadelphia where decline was observed and identified to be critical. The datasets used for GIS spatial analyses were from the American Community Survey's 5 year Estimate for 2012 through 2016 provided by the U.S. Census TIGER. To examine and understand finer conditions of the sample area, data at the block group level was chosen. Based on the analysis, an assessment model was proposed with preservation interests integrated as index variables. For reference to designing the assessment model, relevant literature regarding brownfield revitalization were mainly considered. In result, the assessment model recognized areas where reusing the existing could have positive impact for retaining historic urban character. Through utilizing easily accessible public data, the tool is aimed to provide preliminary screening to identify potential areas apt for reuse and rehabilitation outside the considerations of local designations and districts. While aiding stakeholders and decision-makers looking for alternative options at earlier planning phases, the model also seeks to invite preservation to engage more actively for urban development projects.
Managing resonant trapped orbits in our Galaxy
Creators: name: Binney, James
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Galaxy modelling is greatly simplified by assuming the existence of a global system of angle-action coordinates. Unfortunately, global angle-action coordinates do not exist because some orbits become trapped by resonances, especially where the radial and vertical frequencies coincide. We show that in a realistic Galactic potential such trapping occurs only on thick-disc and halo orbits (speed relative to the guiding centre >~80 km/s). We explain how the Torus Mapper code (TM) behaves in regions of phase space in which orbits are resonantly trapped, and we extend TM so trapped orbits can be manipulated as easily as untrapped ones. The impact that the resonance has on the structure of velocity space depends on the weights assigned to trapped orbits. The impact is everywhere small if each trapped orbit is assigned the phase space density equal to the time average along the orbit of the DF for untrapped orbits. The impact could be significant with a different assignment of weights to trapped orbits.
description: 13 pages, 17 figures, accepted by MNRAS
Variable stars with the Kepler space telescope
Creators: name: Molnár, László
name: Szabó, Róbert
name: Plachy, Emese
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Kepler space telescope has revolutionised our knowledge about exoplanets and stars and is continuing to do so in the K2 mission. The exquisite photometric precision, together with the long, uninterrupted observations opened up a new way to investigate the structure and evolution of stars. Asteroseismology, the study of stellar oscillations, allowed us to investigate solar-like stars and to peer into the insides of red giants and massive stars. But many discoveries have been made about classical variable stars too, ranging from pulsators like Cepheids and RR Lyraes to eclipsing binary stars and cataclysmic variables, and even supernovae. In this review, which is far from an exhaustive summary of all results obtained with Kepler, we collected some of the most interesting discoveries, and ponder on the role for amateur observers in this golden era of stellar astrophysics.
description: 12 pages, 6 figures, published in the Journal of the AAVSO: https://www.aavso.org/apps/jaavso/article/3235/, v2: fixed a bad a reference. arXiv admin note: text overlap with arXiv:1108.3083 by other authors
Quark deconfinement in the proto-magnetar model of Long Gamma-Ray Bursts
Creators: name: Pili, A. G.
name: Bucciantini, N.
name: Drago, A.
name: Pagliara, G.
name: Del Zanna, L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the possible implications of quark deconfinement on the phenomenology of Long Gamma-Ray Bursts focusing, in particular, on the possibility to describe multiple prompt emission phases in the context of the proto-magnetar model. Starting from numerical models of rotating Hadron Stars and Quark Stars in full general relativity we track the electromagnetic spin-down evolution in both the hadronic and quark phase, linking the two families through conservation of baryon number and angular momentum. We give estimates of the timescales and the energetics involved in the spin-down process deriving, in the relevant spin range, the relation between the initial and the final masses and rotational energies, whenever hadron-quark conversion is possible. We show how the results can be used in relevant astrophysical cases such as the double burst GRB 110709B.
description: 5 pages, 3 figures, 2 tables
Supplementary document for Experimental demonstration of a nanobeam Fano laser - 6830503.pdf
Creators: name: Dong, Gaoneng
name: Xiong, Meng
name: Dimopoulos, Evangelos
name: Sakanas, Aurimas
name: Semenova, Elizaveta
name: Yvind, Kresten
name: Yu, Yi
name: Mørk, Jesper
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: Supplement
Vortex phase deterioration common path interferometry
Creators: name: Shetty, Pritam P
name: V, Hemalatha
name: Babu, Mahalingam
name: Bingi, Jayachandra
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Common path interferometers (CPI) are significant due to their compactness and vibration resistance. The usual challenge in CPI would arise due to a very small separation between reference and sample beams, where sending a reference beam through a sample is considered as a limitation. But this limitation also makes it difficult to probe the interaction of beams with material as a function of their phase structure. This study can pave the way for a new kind of interferometry that can provide unique phase signatures to study the sample. The paper proposes and demonstrates a novel approach based on thermo-optic refraction, to send both beams through the sample and probe the phase deterioration due to the relative interaction of beams in the material medium. Here, thermo-optic refraction interferometry (TORI) allows the superposition of a higher order vortex beam with a non-vortex beam through the phenomenon of thermal lensing. The non-vortex beam is made to expand in a controlled fashion by another laser. The relative interaction of the expanding non-vortex beam and the vortex beam within the sample, results in the output interferogram. The phase deterioration analysis of the output interferogram elucidate medium driven phase changes. This technique is demonstrated using the milk samples by recording the RMS azimuthal phase deterioration of the OAM beam.
description: Journal of Optics (2023)
Origins of Large Voltage Hysteresis in High Energy-Density Metal Fluoride Lithium-Ion Battery Conversion Electrodes
Creators: name: Li, Linsen
name: Jacobs, Ryan
name: Gao, Peng
name: Gan, Liyang
name: Wang, Feng
name: Morgan, Dane
name: Jin, Song
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Metal fluoride and oxides can store multiple lithium-ions through conversion chemistry to enable high energy-density lithium-ion batteries. However, their practical applications have been hindered by an unusually large voltage hysteresis between charge and discharge voltage-profiles and the consequent low energy efficiency (< 80%). The physical origins of such hysteresis are rarely studied and poorly understood. Here we employ in situ X-ray absorption spectroscopy (XAS), transmission electron microscopy (TEM), density-functional-theory (DFT) calculations, and galvanostatic intermittent titration technique (GITT) to first correlate the voltage profile of iron fluoride ($FeF_3$), a representative conversion electrode material, with evolution and spatial distribution of intermediate phases in the electrode. The results reveal that, contrary to conventional belief, the phase evolution in the electrode is symmetrical during discharge and charge. However, the spatial evolution of the electrochemically active phases, which is controlled by reaction kinetics, is different. We further propose that the voltage hysteresis in the $FeF_3$ electrode is kinetic in nature. It is the result of Ohmic voltage drop, reaction overpotential, and different spatial distributions of electrochemically-active phases (i.e. compositional inhomogeneity). Therefore, the large hysteresis can be expected to be mitigated by rational design and optimization of material microstructure and electrode architecture to improve the energy efficiency of lithium-ion batteries based on conversion chemistry.
Full Search Strategy and Search results
Creators: name: Fulbright, Helen
name: Mott, Andrew
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 429999
subject: Other health sciences not elsewhere classified

description: Full Search Strategy for "Pain control post total knee replacement in patients given local infiltrative analgesia combined with adductor canal block compared to either modality alone: A systematic review and Meta-analysis."
Calculating Galois groups of third order linear differential equations with parameters
Creators: name: Minchenko, Andrei
name: Ovchinnikov, Alexey
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: Commutative Algebra (math.AC)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 12H05, 12H20, 13N10, 20G05, 20H20

description: Motivated by developing algorithms that decide hypertranscendence of solutions of extensions of the Bessel differential equation, algorithms computing the unipotent radical of a parameterized differential Galois group have been recently developed. Extensions of Bessel's equation, such as the Lommel equation, can be viewed as homogeneous parameterized linear differential equations of the third order. In the present paper, we give the first known algorithm that calculates the differential Galois group of a third order parameterized linear differential equation.
Indriya: Building a Secure and Transparent Organ Donation System with Hyperledger Fabric
Creators: name: Ghosh, Satyajit
name: Dutta, Mousumi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Recent technological advancements have led to the development of new methods for managing organ donation systems, which aim to overcome the limitations of traditional centralized systems. To achieve increased transparency, security, and efficiency in the organ donation process, blockchain technology is being proposed as a replacement for these centralized systems. However, most previous works on organ donation systems have focused on using Ethereum-based blockchain solutions, which offer limited control, a fixed set of consensus protocols, and no support for concurrent executions. In contrast, our work has utilized the Hyperledger Fabric framework to develop a network model of the organ donation system. We have designed and deployed a prototype system with smart contracts using Amazon Managed Blockchain Service. Additionally, we have built a client application that uses the Fabric SDK to interact with the network and perform various actions. To evaluate the performance of our system, we conducted extensive testing using the Hyperledger Caliper benchmarking tool. In our test bench, the system achieved a peak actual send rate of 389.1 transactions per second (TPS) for creating new records and 508.4 TPS for reading records. At a send rate of 800 TPS, the system took an average of 12.16 seconds to serve a request for creating a record and an average of 3.71 seconds to serve a request for reading a record. Future work is required to extend the functionalities of the system and identify potential endorsers and managers for this type of controlled blockchain network.
description: 13 pages, 4 figures, 4 tables
On the criteria for integrability of the Liénard equation
Creators: name: Kudryashov, Nikolai A.
name: Sinelshchikov, Dmitry I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The Liénard equation is of a high importance from both mathematical and physical points of view. However a question about integrability of this equation has not been completely answered yet. Here we provide a new criterion for integrability of the Liénard equation using an approach based on nonlocal transformations. We also obtain some of previously known criteria for integrability of the Liénard equation as a straightforward consequences of our approach's application. We illustrate our results by several new examples of integrable Liénard equations.
Identifying school-based teacher educators’ professional learning needs: an international survey
Creators: name: Czerniawski, Gerry
name: Guberman, Ainat
name: Mac Phail, Ann
name: Vanassche, Eline
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 39
subject: Education

description: Though teachers in schools are increasingly being asked to take responsibility for the education and training of prospective and practicing teachers, little empirical research has been undertaken into the support that they require to perform their duties effectively. This study provides an international needs analysis of the professional learning needs of this occupational group through a survey of 1680 school-based teacher educators (SBTEs) conducted in 12 countries. While the findings from this study reveal that most SBTEs receive some form of preparation for their role, they require that preparation to be more collaborative and target the pedagogic and research-related aspects of their work. The findings also indicate how much more needs to be done to recognise, address and support SBTEs’ learning needs in relation to the rapidly-changing socio-economic, cultural and technological contexts that underpin the work of all teacher educators
Mapping atomic orbitals with the transmission electron microscope: Images of defective graphene predicted from first-principles theory
Creators: name: Pardini, Lorenzo
name: Löffler, Stefan
name: Biddau, Giulio
name: Hambach, Ralf
name: Kaiser, Ute
name: Draxl, Claudia
name: Schattschneider, Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Transmission electron microscopy has been a promising candidate for mapping atomic orbitals for a long time. Here, we explore its capabilities by a first principles approach. For the example of defected graphene, exhibiting either an isolated vacancy or a substitutional nitrogen atom, we show that three different kinds of images are to be expected, depending on the orbital character. To judge the feasibility of visualizing orbitals in a real microscope, the effect of the optics aberrations is simulated. We demonstrate that, by making use of energy-filtering, it should indeed be possible to map atomic orbitals in a state-of-the-art transmission electron microscope.
A numerical model of parsec scale SSC morphologies and their radio emission
Creators: name: Richter, Stephan
name: Spanier, Felix
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: J.2

description: In current models for jets of AGNs and their emission a shortcoming in the description and understanding of the connection between the largest and smallest scales exists. In this work we present a spatially resolved SSC model extended to parsec scales, which opens the possibility of probing the connections between the radio and high energy properties. We simulate an environment that leads to Fermi-I acceleration of leptonic particles and includes the full time dependence of this process. Omitting the restriction of a finite downstream region, we find that the spectral energy distribution (SED) produced by the accelerated particles strongly depends on their radial confinement behind the shock. The requirement, for both the restriction of high energy emission to a small region around the shock and the production of a flat radio spectrum, is an initial linear increase of the radius immediately behind the shock, which then slows down with increasing distance from the shock. A good representation of the data for the Blazar \textit{Mkn501} is achieved by a parameterized log-function. The prediction for the shape of the radio blob is given by the flux distribution with respect to shock distance.
description: accepted for publication in ApJ, 10 pages, 5 figures
Robotic Sonographer: Autonomous Robotic Ultrasound using Domain Expertise in Bayesian Optimization
Creators: name: Raina, Deepak
name: Chandrashekhara, SH
name: Voyles, Richard
name: Wachs, Juan
name: Saha, Subir Kumar
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Ultrasound is a vital imaging modality utilized for a variety of diagnostic and interventional procedures. However, an expert sonographer is required to make accurate maneuvers of the probe over the human body while making sense of the ultrasound images for diagnostic purposes. This procedure requires a substantial amount of training and up to a few years of experience. In this paper, we propose an autonomous robotic ultrasound system that uses Bayesian Optimization (BO) in combination with the domain expertise to predict and effectively scan the regions where diagnostic quality ultrasound images can be acquired. The quality map, which is a distribution of image quality in a scanning region, is estimated using Gaussian process in BO. This relies on a prior quality map modeled using expert's demonstration of the high-quality probing maneuvers. The ultrasound image quality feedback is provided to BO, which is estimated using a deep convolution neural network model. This model was previously trained on database of images labelled for diagnostic quality by expert radiologists. Experiments on three different urinary bladder phantoms validated that the proposed autonomous ultrasound system can acquire ultrasound images for diagnostic purposes with a probing position and force accuracy of 98.7% and 97.8%, respectively.
description: Accepted in IEEE International Conference on Robotics and Automation (ICRA) 2023
Industry workshop report
Creators: name: I.FAST WP3 Members
Publisher: name: Zenodo
Year: 2023

description: The organization of the Industry Workshop was one of the main activities planned for Task 1 of Work Package 3 - Industry Engagement. The original plan of holding one Industry Workshop mid-way through the project was expanded to enhance the opportunities for companies to meet the I.FAST community through the inclusion of a second Industry workshop held in April 2023 and a third one to be held before the end of the project. It was also decided to schedule the workshops close to the I.FAST Annual meetings, thus offering companies the opportunity to attend both events. This document describes the goals, the implementation, the conclusions and the follow-up of the two events.
description: {"references": ["I.FAST Del3.1"]}