cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sustained eruptions on Enceladus explained by turbulent dissipation in tiger stripes
Creators: name: Kite, Edwin S.
name: Rubin, Allan M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Spacecraft observations suggest that the plumes of Saturn's moon Enceladus draw water from a subsurface ocean, but the sustainability of conduits linking ocean and surface is not understood. Observations show sustained (though tidally modulated) fissure eruptions throughout each orbit, and since the 2005 discovery of the plumes. Peak plume flux lags peak tidal extension by $\sim$1 radian, suggestive of resonance. Here we show that a model of the tiger stripes as tidally-flexed slots that puncture the ice shell can simultaneously explain the persistence of the eruptions through the tidal cycle, the phase lag, and the total power output of the tiger stripe terrain, while suggesting that the eruptions are maintained over geological timescales. The delay associated with flushing and refilling of \emph{O}(1) m-wide slots with ocean water causes erupted flux to lag tidal forcing and helps to buttress slots against closure, while tidally pumped in-slot flow leads to heating and mechanical disruption that staves off slot freeze-out. Much narrower and much wider slots cannot be sustained. In the presence of long-lived slots, the 10$^6$-yr average power output of the tiger stripes is buffered by a feedback between ice melt-back and subsidence to \emph{O}(10$^{10}$) W, which is similar to the observed power output, suggesting long-term stability. Turbulent dissipation makes testable predictions for the final flybys of Enceladus by the \emph{Cassini} spacecraft. Our model shows how open connections to an ocean can be reconciled with, and sustain, long-lived eruptions. Turbulent dissipation in long-lived slots helps maintain the ocean against freezing, maintains access by future Enceladus missions to ocean materials, and is plausibly the major energy source for tiger stripe activity.
Community-developed checklists for publishing images and image analysis
Creators: name: Schmied, Christopher
name: Nelson, Michael
name: Avilov, Sergiy
name: Gert-Jan Bakker
name: Bertocchi, Cristina
name: Bischof, Johanna
name: Boehm, Ulrike
name: Brocher, Jan
name: Carvalho, Mariana
name: Catalin Chiritescu
name: Christopher, Jana
name: Cimini, Beth
name: Conde-Sousa, Eduardo
name: Ebner, Michael
name: Ecker, Rupert
name: Eliceiri, Kevin
name: Fernandez-Rodriguez, Julia
name: Gaudreault, Nathalie
name: Gelman, Laurent
name: Grunwald, David
name: Tingting Gu
name: Halidi, Nadia
name: Hammer, Mathias
name: Hartley, Matthew
name: Held, Marie
name: Jug, Florian
name: Varun Kapoor
name: Ayse Aslihan Koksoy
name: Lacoste, Judith
name: Dévédec, Sylvia Le
name: Guyader, Sylvie Le
name: Penghuan Liu
name: Martins, Gabriel
name: Aastha Mathur
name: Miura, Kota
name: Llopis, Paula Montero
name: Nitschke, Roland
name: North, Alison
name: Parslow, Adam
name: Payne-Dwyer, Alex
name: Plantard, Laure
name: Ali, Rizwan
name: Schroth-Diez, Britta
name: Schütz, Lucas
name: Scott, Ryan T.
name: Seitz, Arne
name: Selchow, Olaf
name: Ved Sharma
name: Spitaler, Martin
name: Sathya Srinivasan
name: De Castillia, Caterina Strambio
name: Taatjes, Douglas
name: Tischer, Christian
name: Jambor, Helena
Publisher: name: Zenodo
Year: 2023
Subjects: Image
Bioimage
Science Communication
Publishing
Reproducibility
Image analysis

description: The checklists were published in the manuscript "Community-developed checklists for publishing images and image analysis" (https://arxiv.org/abs/2302.07005). We present community-developed checklists for preparing light microscopy images and image analysis for publications. Helpful for for authors, readers, and publishers as they give a quick overview of key features on image formatting, annotation, color selection, data availability, and for reporting image analysis workflows.
Multivariate Gaussian extended quadrature method of moments for turbulent disperse multiphase flow
Creators: name: Chalons, Christophe
name: Laurent, Frédérique
name: Massot, Marc
name: Vié, Aymeric
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The present contribution introduces a fourth-order moment formalism for particle trajectory crossing (PTC) in the framework of multiscale modeling of disperse multiphase flow. In our previous work, the ability to treat PTC was examined with direct-numerical simulations (DNS) using either quadrature reconstruction based on a sum of Dirac delta functions denoted as Quadrature-Based Moment Methods (QBMM) in order to capture large scale trajectory crossing, or by using low order hydrodynamics closures in the Levermore hierarchy denoted as Kinetic-Based Moment Methods (KBMM) in order to capture small scale trajectory crossing. Whereas KBMM leads to well-posed PDEs and has a hard time capturing large scale trajectory crossing for particles with enough inertia, QBMM based on a discrete reconstruction suffers from singularity formation and requires too many moments in order to capture the effect of PTC at both small scale and large scale both to small-scale turbulence as well as free transport coupled to drag in an Eulerian mesoscale framework. The challenge addressed in this work is thus twofold: first, to propose a new generation of method at the interface between QBMM and KBMM with less singular behavior and the associated proper mathematical properties, which is able to capture both small scale and large scale trajectory crossing, and second to limit the number of moments used for applicability in 2-D and 3-D configurations without losing too much accuracy in the representation of spatial fluxes. In order to illustrate its numerical properties, the proposed Gaussian extended quadrature method of moments (Gaussian-EQMOM) is applied to solve 1-D and 2-D kinetic equations representing finite-Stokes-number particles in a known turbulent fluid flow.
ROSE Network - The Research on STEM Education Network: Improving Research Inclusivity through a Grassroots Culture of Scientific Teaching (RCN-UBE Introduction)
Creators: name: Morris, James
name: Sutton, Trent
name: Raut, Samiksha
name: Olimpo, Jeffrey
Publisher: name: QUBES Educational Resources
Year: 2023

description: ROSE provides professional development and networking opportunities for CC and HBCU faculty.
Community-developed checklists for publishing images and image analysis
Creators: name: Schmied, Christopher
name: Nelson, Michael
name: Avilov, Sergiy
name: Gert-Jan Bakker
name: Bertocchi, Cristina
name: Bischof, Johanna
name: Boehm, Ulrike
name: Brocher, Jan
name: Carvalho, Mariana
name: Catalin Chiritescu
name: Christopher, Jana
name: Cimini, Beth
name: Conde-Sousa, Eduardo
name: Ebner, Michael
name: Ecker, Rupert
name: Eliceiri, Kevin
name: Fernandez-Rodriguez, Julia
name: Gaudreault, Nathalie
name: Gelman, Laurent
name: Grunwald, David
name: Tingting Gu
name: Halidi, Nadia
name: Hammer, Mathias
name: Hartley, Matthew
name: Held, Marie
name: Jug, Florian
name: Varun Kapoor
name: Ayse Aslihan Koksoy
name: Lacoste, Judith
name: Dévédec, Sylvia Le
name: Guyader, Sylvie Le
name: Penghuan Liu
name: Martins, Gabriel
name: Aastha Mathur
name: Miura, Kota
name: Llopis, Paula Montero
name: Nitschke, Roland
name: North, Alison
name: Parslow, Adam
name: Payne-Dwyer, Alex
name: Plantard, Laure
name: Rizwan, Ali
name: Schroth-Diez, Britta
name: Schütz, Lucas
name: Scott, Ryan T.
name: Seitz, Arne
name: Selchow, Olaf
name: Ved Sharma
name: Spitaler, Martin
name: Sathya Srinivasan
name: De Castillia, Caterina Strambio
name: Taatjes, Douglas
name: Tischer, Christian
name: Jambor, Helena
Publisher: name: Zenodo
Year: 2023
Subjects: Image
Bioimage
Science Communication
Publishing
Reproducibility
Image analysis

description: The checklists were published in the manuscript "Community-developed checklists for publishing images and image analysis" (https://arxiv.org/abs/2302.07005). We present community-developed checklists for preparing light microscopy images and image analysis for publications. Helpful for for authors, readers, and publishers as they give a quick overview of key features on image formatting, annotation, color selection, data availability, and for reporting image analysis workflows.
Discovery of the secondary eclipse of HAT-P-11 b
Creators: name: Huber, K. F.
name: Czesla, S.
name: Schmitt, J. H. M. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the detection of the secondary eclipse of HAT-P-11 b, a Neptune-sized planet orbiting an active K4 dwarf. Using all available short-cadence data of the Kepler mission, we derive refined planetary ephemeris increasing their precision by more than an order of magnitude. Our simultaneous primary and secondary transit modeling results in improved transit and orbital parameters. In particular, the precise timing of the secondary eclipse allows to pin down the orbital eccentricity to $0.26459_{-0.00048}^{+0.00069}$. The secondary eclipse depth of $6.09_{-1.11}^{+1.12}$ ppm corresponds to a $5.5σ$ detection and results in a geometric albedo of $0.39\pm0.07$ for HAT-P-11 b, close to Neptune's value, which may indicate further resemblances between these two bodies. Due to the substantial orbital eccentricity, the planetary equilibrium temperature is expected to change significantly with orbital position and ought to vary between $630^\circ$ K and $950^\circ$ K, depending on the details of heat redistribution in the atmosphere of HAT-P-11 b.
description: Accepted by A&A, 27/10/2016
The subiculum involvement on learning and memory tasks: a scoping review of studies using rats and mice
Creators: name: De Melo, Márcio Braga
name: Favaro, Vanessa Manchim
name: Daldegan-Bueno, Dimitri
name: De Oliveira, Maria Gabriela Menezes
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Nervous System
subject: Medicine and Health Sciences
subject: Anatomy
subject: Experimental Analysis of Behavior
subject: Social and Behavioral Sciences
subject: Life Sciences
subject: Psychology
subject: FOS: Psychology
subject: Neuroscience and Neurobiology
subject: Behavioral Neurobiology
subject: Animal Sciences

description: A detailed description of this project is provided in https://osf.io/7g56a/ and in supplemental files.
Anisotropy-assisted non-scattering coherent absorption of surface plasmon-polaritons
Creators: name: Ignatov, Anton I.
name: Nechepurenko, Igor A.
name: Baranov, Denis G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The ability to control propagation of electromagnetic guided modes lies at the heart of integrated nanophotonics. Surface plasmon-polaritons are a class of guided modes which can be employed in integrated optical systems. Here, we present a theoretical design of a coherent surface plasmon absorber which can perfectly harvest energy of coherently incident surface plasmons without parasitic scattering into free space modes. Excitation of free space modes which usually accompanies scattering of a surface plasmon by an interface boundary is avoided due to specially tailored anisotropy of the absorber. The concept of coherent SPP absorber is analyzed numerically for spatially non-uniform and finite-size structures. We believe that our results will be important for the development of integrated nanoplasmonic systems.
Pumping electrons in graphene to the $\mathbf{M}$-point in the Brillouin zone: The emergence of anisotropic plasmons
Creators: name: Chaves, A. J.
name: Peres, N. M. R.
name: Low, Tony
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the existence of plasmons in a non-equilibrium situation where electrons from the valence band of graphene are pumped to states in the Brillouin zone around the $\mathbf{M}$-point by a high intensity UV electromagnetic field. The resulting out-of-equilibrium electron gas is later probed by a weak electromagnetic field of different frequency. We show that the optical properties of the system and the dispersion of the plasmons are strongly anisotropic, depending on the pumping radiation properties: its intensity, polarization, and frequency. This anisotropy has its roots in the saddle-like nature of the electronic dispersion relation around that particular point in the Brillouin zone. It is found that despite the strong anisotropy, the dispersion of the plasmons scales with the square root of the wave number but is characterized an effective Fermi energy, which depends on the properties of the pumping radiation. Our calculations go beyond the usual Dirac cone approximation taking the full band structure of graphene into account. This is a necessary condition for discussing plasmons at the $\mathbf{M}$-point in the Brillouin zone.
description: 23 pages, 17 figures
Ward and Nielsen Identities for ABJM Theory in ${\cal N}=1$ Superspace
Creators: name: Upadhyay, Sudhaker
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The structures and the associated gauge algebra of ABJM theory in ${\cal N}=1$ superspace are reviewed. We derive the Ward identities of the theory in the class of Lorentz-type gauges at quantum level to justify the renormalizability of the model. We compute the Nielsen identities for the two-point functions of the theory with the help of enlarged BRST transformation. The identities are derived in ABJM theory to ensure the gauge independence of the physical poles of the Green's functions.
description: 10 pages, accepted for publication in Int. J. Mod. Phys. A
On the Performance of Multihop-Intervehicular Communications Systems over n*Rayleigh Fading Channels
Creators: name: Alghorani, Yahia
name: Kaddoum, Georges
name: Muhaidat, Sami
name: Pierre, Samuel
name: Al-Dhahir, Naofal
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We investigate the performance of multihop-intervehicular communication systems with regenerative and nonregenerative relaying. We consider the so-called "n*Rayleigh distribution" as an adequate multipath fading channel model for vehicle-to-vehicle communication scenarios. We derive a novel approximation for the outage probability of maximum ratio combining (MRC) diversity reception. In addition, we analyze the amount of fading and optimize the power allocation for the investigated scenario. Numerical results show that regenerative systems are more efficient than nonregenerative systems when the cascading order (n) is small; however, for large n, our results demonstrate that the performance of both relaying techniques is rather similar.
description: 4 pages, 5 figures
Criteria for selecting an Enterprise Modelling Method – Students' Perspectives on Archimate and 4EM
Creators: name: Petersen, Sobah Abbas
name: Qayyum, Farzana
name: Krogstie, John
Publisher: name: Enterprise Modelling and Information Systems Architectures (EMISAJ)
Year: 2023

description: Innovation in enterprises require an understanding of the inherent complexity and dependencies among an enterprise's processes, goals, resources, customers and several other aspects. The choice of a suitable Enterprise Modelling method and language is an essential part of it. This paper presents an overview of students' perspectives on the Enterprise Modelling methods and languages 4EM and Archimate, and the patterns and criteria for selecting a specific method and modelling language for their assignments. The analysis is based on a post hoc analysis of students' assignments from a course in Enterprise Architecture and Innovation, over a period of four years. The main contributions of this work are a set of selection criteria and recommendations for educators and students in selecting Enterprise Modelling methods and languages.
description: Enterprise Modelling and Information Systems Architectures (EMISAJ), Vol. 18 (2023)
Approaching the Standard Quantum Limit of Mechanical Torque Sensing
Creators: name: Kim, P. H.
name: Hauer, B. D.
name: Doolin, C.
name: Souris, F.
name: Davis, J. P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Mechanical transduction of torque has been key to probing a number of physical phenomena, such as gravity, the angular momentum of light, the Casimir effect, magnetism, and quantum oscillations. Following similar trends as mass and force sensing, mechanical torque sensitivity can be dramatically improved by scaling down the physical dimensions, and therefore moment of inertia, of a torsional spring. Yet now, through precision nanofabrication and sub-wavelength cavity optomechanics, we have reached a point where geometric optimization can only provide marginal improvements to torque sensitivity. Instead, nanoscale optomechanical measurements of torque are overwhelmingly hindered by thermal noise. Here we present cryogenic measurements of a cavity-optomechanical torsional resonator cooled in a dilution refrigerator to a temperature of 25 mK, corresponding to an average phonon occupation of = 35, that demonstrate a record-breaking torque sensitivity of 2.9 yNm/Hz^{1/2}. This a 270-fold improvement over previous optomechanical torque sensors and just over an order of magnitude from its standard quantum limit. Furthermore, we demonstrate that mesoscopic test samples, such as micron-scale superconducting disks, can be integrated with our cryogenic optomechanical torque sensing platform, in contrast to other cryogenic optomechanical devices, opening the door for mechanical torque spectroscopy of intrinsically quantum systems.
description: 25 pages, 7 figures
Orbifold points on Prym-Teichmüller curves in genus four
Creators: name: Torres-Teigell, David
name: Zachhuber, Jonathan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: For each discriminant $D>1$, McMullen constructed the Prym-Teichmüller curves $W_D(4)$ and $W_D(6)$ in $\mathcal{M}_{3}$ and $\mathcal{M}_{4}$, which constitute one of the few known infinite families of geometrically primitive Teichmüller curves. In the present paper, we determine for each $D$ the number and type of orbifold points on $W_D(6)$. These results, together with a previous result of the two authors in the genus $3$ case and with results of Lanneau-Nguyen and Möller, complete the topological characterisation of all Prym-Teichmüller curves and determine their genus. The study of orbifold points relies on the analysis of intersections of $W_D(6)$ with certain families of genus $4$ curves with extra automorphisms. As a side product of this study, we give an explicit construction of such families and describe their Prym-Torelli images, which turn out to be isomorphic to certain products of elliptic curves. We also give a geometric description of the flat surfaces associated to these families and describe the asymptotics of the genus of $W_D(6)$ for large $D$.
description: 38 pages, 5 figures. For PARI files, see http://www.uni-frankfurt.de/50278800/Zachhuber
Trapping of molecular Oxygen together with Lithium atoms
Creators: name: Akerman, Nitzan
name: Karpov, Michael
name: Segev, Yair
name: Bibelnik, Natan
name: Narevicius, Julia
name: Narevicius, Edvardas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We demonstrate simultaneous deceleration and trapping of a cold atomic and molecular mixture. This is the first step towards studies of cold atom-molecule collisions at low temperatures as well as application of sympathetic cooling. Both atoms and molecules are cooled in a supersonic expansion and are loaded into a moving magnetic trap which brings them to rest via the Zeeman interaction from an initial velocity of 375 m/s. We use a beam seeded with molecular Oxygen, and entrain it with Lithium atoms by laser ablation prior to deceleration. The deceleration ends with loading of the mixture into a static quadrupole trap, which is generated by two permanent magnets. We estimate $10^9$ trapped O$_2$ molecules and $10^5$ Li atoms with background pressure limited lifetime on the order of 1 second. With further improvements to Lithium entrainment we expect that sympathetic cooling of molecules is within reach.
description: 5 pages, 4 figures
Single-electron tunneling in the fractional quantum Hall effect regime
Creators: name: Beenakker, C. W. J.
name: Rejaei, B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A recent mean-field approach to the fractional quantum Hall effect (QHE) is reviewed, with a special emphasis on the application to single-electron tunneling through a quantum dot in a high magnetic field. The theory is based on the adiabatic principle of Greiter and Wilczek, which maps an incompressible state in the integer QHE on the fractional QHE. The single-particle contribution to the addition spectrum is analyzed, for a quantum dot with a parabolic confining potential. The spectrum is shown to be related to the Fock-Darwin spectrum in the integer QHE, upon substitution of the electron charge by the fractional quasiparticle charge. Implications for the periodicity of the Aharonov-Bohm oscillations in the conductance are discussed.
description: 9 pages, 3 figures; contribution to a 1992 workshop
Topological defects in cholesteric liquid crystal shells
Creators: name: Darmon, Alexandre
name: Benzaquen, Michael
name: Čopar, Simon
name: Dauchot, Olivier
name: Lopez-Leon, Teresa
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate experimentally and numerically the defect configurations emerging when a cholesteric liquid crystal is confined to a spherical shell. We uncover a rich scenario of defect configurations, some of them non-existent in nematic shells, where new types of defects are stabilized by the helical ordering of the liquid crystal. In contrast to nematic shells, here defects are not simple singular points or lines, but have a large structured core. Specifically, we observe five different types of cholesteric shells. We study the statistical distribution of the different types of shells as a function of the two relevant geometrical dimensionless parameters of the system. By playing with these parameters, we are able to induce transitions between different types of shells. These transitions involve interesting topological transformations in which the defects recombine to form new structures. Surprisingly, the defects do not approach each other by taking the shorter distance route (geodesic), but by following intricate paths.
description: 10 pages, 8 figures
Організація привокзального простору Південного вокзалу Києва зі збереженням будівлі Залізничного ринку
Creators: name: Galyna, Agieieva
name: Leonid, Kriveljov
Publisher: name: Zenodo
Year: 2023
Subjects: архітектура
містобудування
циклічні споруди
будівлі ринків
Залізничний ринок
київський модернизм
вісячі покриття
просторова організація

description: Проблема. Останнім часом у світі набуває гостроти проблема збереження низки об’єктів, побудованих упродовж 1960-1990-х років. Актуальним є збереження й місця та ролі таких об’єктів у містобудівної ситуації, яка постійно змінюється у часі. До розв’язання проблеми долучаються спеціалісти, громадські діячі та організації. За ініціативою останніх створено мапу архітектури київського модернізму, на якій позначено 70 об’єктів, зокрема, будівля Залізничного ринку 1973 року побудови. Серед критеріїв відбору об’єктів означеного періоду будівництва – відповідні містобудівні, архітектурні, конструктивні та інженерні рішення, технології проєктування, виготовлення та монтажу будівельних конструкцій, технічний стан будівель, тощо. Актуальність. Експлуатація відповідальних за класом наслідків будівель та споруд, побудованих за індивідуальними проєктами впродовж означеного періоду, – складний процес. Він пов'язаний із розв’язанням комплексу проблем, зокрема, забезпеченням надійності та конструктивної безпеки, подовженням розрахункових строків служби, ризиками виникнення збитків, тощо. Проєктуванню та будівництву таких об’єктів передували етапи експериментальних досліджень будівельних конструкцій та їх систем, а багаторічний процес експлуатації супроводжувався змінами функціонального призначення, технічним переоснащенням, переплануванням, консервацією, втратою ролі функціонального акценту забудови, тощо. Оригінальність. Для повернення будівлі ринку ролі функціонального акценту забудови привокзального простору можуть бути залучені декілька принципів композиційних рішень в умовах забудови, що склалася навколо, та метод тріангуляції, реалізований в її архітектурному та конструктивному рішеннях.
An Investigation of the Psychometric Properties of Lifestyle Profile-BREF
Creators: name: Park, Kang-Hyun
name: Nam, Sanghun
name: Hong, Ickpyo
name: Park, Ji-Hyuk
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Medicine
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Objectives: This study aimed to validate the Yonsei Lifestyle Profie-BREF (YLP-BREF) and preliminarily investigate its psychometric properties. Methods: In total, 569 community-dwelling older adults were recruited. Confirmatory factor analysis was conducted. Also, convergent and divergent validity were assessed. Additionally, Cronbach’s alpha reliability was examined. Finally, an optimal cutoff score for the YLP-BREF was established using receiver operating characteristic curve analysis. Results: The one-factor model was the best fit. The 5 items of physical activity and the 4 items of activity participation illustrated an acceptable fit. All nutrition items showed an acceptable fit. Cronbach’s alpha reliability was good for the total score and nutrition and acceptable for physical activity, but insufficient for activity participation. Convergent and divergent validities were good. The optimal cutoff score for the YLP-BREF was 49. Conclusion: The YLP-BREF is a reliable and valid self-report questionnaire for measuring multifaceted lifestyle factors in older adults in South Korea.
Quasi-Galois theory in symmetric-monoidal categories
Creators: name: Pauwels, Bregje
Publisher: name: arXiv
Year: 2016
Subjects: subject: Category Theory (math.CT)
subject: K-Theory and Homology (math.KT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Given a ring object $A$ in a symmetric monoidal category, we investigate what it means for the extension $\mathbb{1}\rightarrow A$ to be (quasi-)Galois. In particular, we define splitting ring extensions and examine how they occur. Specializing to tensor-triangulated categories, we study how extension-of-scalars along a quasi-Galois ring object affects the Balmer spectrum. We define what it means for a separable ring to have constant degree, which is a necessary and sufficient condition for the existence of a quasi-Galois closure. Finally, we illustrate the above for separable rings occurring in modular representation theory.
A multilayer perspective for the analysis of urban transportation systems
Creators: name: Aleta, Alberto
name: Meloni, Sandro
name: Moreno, Yamir
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Public urban mobility systems are composed by several transportation modes connected together. Most studies in urban mobility and planning often ignore the multi-layer nature of transportation systems considering only aggregated versions of this complex scenario. In this work we present a model for the representation of the transportation system of an entire city as a multiplex network. Using two different perspectives, one in which each line is a layer and one in which lines of the same transportation mode are grouped together, we study the interconnected structure of 9 different cities in Europe raging from small towns to mega-cities like London and Berlin highlighting their vulnerabilities and possible improvements. Finally, for the city of Zaragoza in Spain, we also consider data about service schedule and waiting times, which allow us to create a simple yet realistic model for urban mobility able to reproduce real-world facts and to test for network improvements.
description: 12 pages including figures. Submitted for publication
T-PHOT version 2.0: improved algorithms for background subtraction, local convolution, kernel registration, and new options
Creators: name: Merlin, E.
name: Bourne, N.
name: Castellano, M.
name: Ferguson, H. C.
name: Wang, T.
name: Derriere, S.
name: Dunlop, J. S.
name: Elbaz, D.
name: Fontana, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the new release v2.0 of T-PHOT, a publicly available software package developed to perform PSF-matched, prior-based, multiwavelength deconfusion photometry of extragalactic fields. New features included in the code are presented and discussed: background estimation, fitting using position dependent kernels, flux prioring, diagnostical statistics on the residual image, exclusion of selected sources from the model and residual images, individual registration of fitted objects. These new options improve on the performance of the code, allowing for more accurate results and providing useful aids for diagnostics.
description: 7 pages, 8 figures
Covariant Quantization of CPT-violating Photons
Creators: name: Colladay, D.
name: McDonald, P.
name: Noordmans, J. P.
name: Potting, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform the covariant canonical quantization of the CPT- and Lorentz-symmetry-violating photon sector of the minimal Standard-Model Extension, which contains a general (timelike, lightlike, or spacelike) fixed background tensor $k_{AF}^μ$. Well-known stability issues, arising from complex-valued energy states, are solved by introducing a small photon mass, orders of magnitude below current experimental bounds. We explicitly construct a covariant basis of polarization vectors, in which the photon field can be expanded. We proceed to derive the Feynman propagator and show that the theory is microcausal. Despite the occurrence of negative energies and vacuum-Cherenkov radiation, we do not find any runaway stability issues, because the energy remains bounded from below. An important observation is that the ordering of the roots of the dispersion relations is the same in any observer frame, which allows for a frame-independent condition that selects the correct branch of the dispersion relation. This turns out to be critical for the consistency of the quantization. To our knowledge, this is the first system for which quantization has consistently been performed, in spite of the fact that the theory contains negative energies in some observer frames.
description: 38 pages, 2 figures
THIRD PARTY EXPERIMENTATION: Engagement process and technical information
Creators: name: Tsolkas, Dimitrios
name: Merino, Pedro
name: Dieudonne, Michael
Publisher: name: Zenodo
Year: 2024

description: In alignment with the overall project objectives, the 6G-SANDBOX facility is open to other projects of the Smart Networks and Services initiative, as well as to external organizations, including industry, SMEs, research institutions, and academia. The 6G-SANDBOX is open to any interested party that targets performing experiments or bringing & validate new technologies, by using the 6G-SANDBOX infrastructure and tools.
Le bande IR dei pigmenti e coloranti viola / porpora
Creators: name: Gracia, Imma Adrover
Publisher: name: Zenodo
Year: 2023
Subjects: Pigments
Analysis pigments
Conservation heritage
Infrared spectroscopy

description: Sono pochi i pigmenti viola usati in pittura. Includiamo in questa sede quelli più ricorrenti. A cominciare dall’antichità, il Caput Mortuum, una varietà dell’Ematite – rimandiamo al capitolo pigmenti a base di Ossido di ferro – e che è stato identificato su pittura murale romana e nell’arte bizantina.
 Fino al XIX secolo non esistevano pigmenti di colore viola o malva – tranne l’accennata terra viola – e quindi questa colorazione si otteneva mescolando pigmenti azzurri con lacche rosse. Così dunque, nel Trecento si mescolava rossi, fondamentalmente lacche rosse, e pigmenti blu – l’Oltremare o l’Azzurrite – , questi ultimi con aggiunta di pigmenti bianchi per raggiungere tonalità più chiare. Ma sono gli impressionisti ad avere proprio una predilezione per il viola/malva. In quel periodo già erano stati sintetizzati il Violetto di Cobalto e il Viola di Manganese, ma i pittori impressionisti preferivano ottenerlo mescolando il Blu di Cobalto oppure l’Oltremare con una lacca rossa.
 Quando affrontiamo l’analisi di materiale pittorico viola prima cosa che occorre fare è individuare se è costituito di un solo pigmento oppure un miscuglio di due o tre pigmenti. Nel caso sia un pigmento viola, dovremo individuare se si tratta di Violetto di Cobalto (Fosfato oppure Arseniato di Cobalto) o di Viola di Manganese (Pirofosfato di Manganese e Ammonio), ambedue disponibili dalla seconda metà del XIX secolo. Lo spettro IR del Viola di Manganese presenta le bande dovute all’Ammonio, NH4+, che lo rende molto caratteristico. Può essere più problematico distinguere le bande dovute ai Fosfati, PO43-, una delle varietà del Violetto di Cobalto, dai Pirofosfati, P2O74-, composto che costituisce il Viola di Manganese.
 Per ultimo un accenno al prezioso colorante Porpora di Tiro, usato dall’antichità e che è costituito principalmente dal 6,6’-dibromoindaco, un composto derivato dall’Indaco ma con uno spettro IR che presenta bande caratteristiche che lo differenziano dal colorante blu.
High-performance coherent population trapping clock with polarization modulation
Creators: name: Yun, Peter
name: Tricot, François
name: Calosso, Claudio Eligio
name: Micalizio, Salvatore
name: François, Bruno
name: Boudot, Rodolphe
name: Guérandel, Stéphane
name: de Clercq, Emeric
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We demonstrate a vapor cell atomic clock prototype based on continuous-wave (CW) interrogation and double-modulation coherent population trapping (DM-CPT) technique. The DM-CPT technique uses a synchronous modulation of polarization and relative phase of a bi-chromatic laser beam in order to increase the number of atoms trapped in a dark state, i.e. a non-absorbing state. The narrow resonance, observed in transmission of a Cs vapor cell, is used as a narrow frequency discriminator in an atomic clock. A detailed characterization of the CPT resonance versus numerous parameters is reported. A short-term frequency stability of $3.2 \times 10^{-13} τ^{-1/2}$ up to 100 s averaging time is measured. These performances are more than one order of magnitude better than industrial Rb clocks and comparable to those of best laboratory-prototype vapor cell clocks. The noise budget analysis shows that the short and mid-term frequency stability is mainly limited by the power fluctuations of the microwave used to generate the bi-chromatic laser. These preliminary results demonstrate that the DM-CPT technique is well-suited for the development of a high-performance atomic clock, with potential compact and robust setup due to its linear architecture. This clock could find future applications in industry, telecommunications, instrumentation or global navigation satellite systems.
description: 14 pages, 25 figures, 2 tables
Intermittent dipping in a low-mass X-ray Binary
Creators: name: Galloway, Duncan K.
name: Ajamyan, Alishan N.
name: Upjohn, James
name: Stuart, Matthew
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Periodic dips observed in approx. 20% of low-mass X-ray binaries are thought to arise from obscuration of the neutron star by the outer edge of the accretion disk. We report the detection with the Rossi X-ray Timing Explorer of two dipping episodes in Aql X-1, not previously a known dipper. The X-ray spectrum during the dips exhibited an elevated neutral column density, by a factor between 1 and almost two orders of magnitude. Dips were not observed in every cycle of the 18.95-hr orbit, so that the estimated frequency for these events is 0.10 (+0.07,-0.05)/cycle. This is the first confirmed example of intermittent dipping in such a system. Assuming that the dips in Aql X-1 occur because the system inclination is intermediate between the non-dipping and dipping sources, implies a range of 72-79 deg. for the source. This result lends support for the presence of a massive (> 2 M_sun) neutron star in Aql X-1, and further implies that approx. 30 additional LMXBs may have inclinations within this range, raising the possibility of intermittent dips in those systems also. Thus, we searched for dips from 24 other bursting systems, without success. For the system with the largest number of dip phases covered, 4U 1820-303, the nondetection implies a 95% upper limit to the dip frequency of 1.4E-3/cycle.
description: 7 pages, 4 figures; accepted by MNRAS
Ab Initio Modeling Of Friction Reducing Agents Shows Quantum Mechanical Interactions Can Have Macroscopic Manifestation
Creators: name: Velázquez, J. D. Hernández
name: Flores, J. Barroso
name: Goicochea, A. Gama
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Two of the most commonly encountered friction reducing agents used in plastic sheet production are the amides known as erucamide and behenamide, which despite being almost identical chemically, lead to markedly different values of the friction coefficient. To understand the origin of this contrasting behavior, in this work we model brushes made of these two types of linear chain molecules using quantum mechanical numerical simulations under the Density Functional Theory at the B97D/6-31G(d,p)level of theory. Four chains of erucamide and behenamide were linked to a 2X10 zigzag graphene sheet and optimized both in vacuum and in continuous solvent using the SMD implicit solvation model. We find that erucamide chains tend to remain closer together through ππ stacking interactions arising from the double bonds located at C13 C14, a feature behenamide lacks and thus a more spread configuration is obtained with the latter. It is argued that this arrangement of the erucamide chains is responsible for the lower friction coefficient of erucamide brushes, compared with behenamide brushes, which is a macroscopic consequence of cooperative quantum mechanical interactions. While only quantum level interactions are modeled here, we show that behenamide chains are more spread out in the brush than erucamide chains as a consequence of those interactions. The spread out configuration allows more solvent particles to penetrate the brush, leading in turn to more friction, in agreement with macroscopic measurements and mesoscale simulations of the friction coefficient reported in the literature.
description: To appear in The Journal of Physical Chemistry A
Deep HST/STIS Visible-Light Imaging of Debris Systems around Solar Analog Hosts
Creators: name: Schneider, Glenn
name: Grady, Carol A.
name: Stark, Christopher C.
name: Gaspar, Andras
name: Carson, Joseph
name: Debes, John H.
name: Henning, Thomas
name: Hines, Dean C.
name: Jang-Condell, Hannah
name: Kuchner, Marc J.
name: Perrin, Marshall
name: Rodigas, Timothy J.
name: Tamura, Motohide
name: Wisniewski, John P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present new Hubble Space Telescope observations of three a priori known starlight-scattering circumstellar debris systems (CDSs) viewed at intermediate inclinations around nearby close-solar analog stars: HD 207129, HD 202628, and HD 202917. Each of these CDSs possesses ring-like components that are more-massive analogs of our solar system's Edgeworth- Kuiper belt. These systems were chosen for follow-up observations to provide higher-fidelity and better sensitivity imaging for the sparse sample of solar-analog CDSs that range over two decades in systemic ages with HD 202628 and HD 202917 (both ~ 2.3 Gyr) currently the oldest CDSs imaged in visible or near-IR light. These deep (10 - 14 ksec) observations, with six-roll point-spread-function template subtracted visible-light coronagraphy using the Space Telescope Imaging Spectrograph, were designed to better reveal their angularly large, diffuse/low surface brightness, debris rings, and for all targets probe their exo-ring environments for starlight-scattering materials that present observational challenges for current ground-based facilities and instruments. Contemporaneously also observing with a narrower occulter position, these observations additionally probe the CDS endo-ring environments seen to be relatively devoid of scatterers. We discuss the morphological, geometrical, and photometric properties of these CDSs also in the context of other FGK-star hosted CDSs we have previously imaged as a homogeneously observed ensemble. From this combined sample we report a general decay in quiescent disk F_disk/F_star optical brightness ~ t^-0.8, similar to what is seen in at thermal IR wavelengths, and CDSs with a significant diversity in scattering phase asymmetries, and spatial distributions of their starlight-scattering grains.
description: 58 pages, 16 figures, accepted for publication in the Astronomical Journal
A $U(3)$ Gauge Theory on Fuzzy Extra Dimensions
Creators: name: Kurkcuoglu, Seckin
name: Unal, Gonul
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this article, we explore the low energy structure of a $U(3)$ gauge theory over spaces with fuzzy sphere(s) as extra dimensions. In particular, we determine the equivariant parametrization of the gauge fields, which transform either invariantly or as vectors under the combined action of $SU(2)$ rotations of the fuzzy spheres and those $U(3)$ gauge transformations generated by $SU(2) \subset U(3)$ carrying the spin $1$ irreducible representation of $SU(2)$. The cases of a single fuzzy sphere $S_F^2$ and a particular direct sum of concentric fuzzy spheres, $S_F^{2 \, Int}$, covering the monopole bundle sectors with windings $\pm 1$ are treated in full and the low energy degrees of freedom for the gauge fields are obtained. Employing the parametrizations of the fields in the former case, we determine a low energy action by tracing over the fuzzy sphere and show that the emerging model is abelian Higgs type with $U(1) \times U(1)$ gauge symmetry and possess vortex solutions on ${\mathbb R}^2$, which we discuss in some detail. Generalization of our formulation to the equivariant parametrization of gauge fields in $U(n)$ theories is also briefly addressed.
description: 27+1 pages
Observation of a Metric Type N Solar Radio Burst
Creators: name: Kong, Xiangliang
name: Chen, Yao
name: Feng, Shiwei
name: Du, Guohui
name: Li, Chuanyang
name: Koval, Artem
name: Vasanth, V.
name: Wang, Bing
name: Guo, Fan
name: Li, Gang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Type III and type-III-like radio bursts are produced by energetic electron beams guided along coronal magnetic fields. As a variant of type III bursts, Type N bursts appear as the letter "N" in the radio dynamic spectrum and reveal a magnetic mirror effect in coronal loops. Here, we report a well-observed N-shaped burst consisting of three successive branches at metric wavelength with both fundamental and harmonic components and a high brightness temperature ($>$10$^9$ K). We verify the burst as a true type N burst generated by the same electron beam from three aspects of the data. First, durations of the three branches at a given frequency increase gradually, may due to the dispersion of the beam along its path. Second, the flare site, as the only possible source of non-thermal electrons, is near the western feet of large-scale closed loops. Third, the first branch and the following two branches are localized at different legs of the loops with opposite sense of polarization. We also find that the sense of polarization of the radio burst is in contradiction to the O-mode and there exists a fairly large time delay ($\sim$3-5 s) between the fundamental and harmonic components. Possible explanations accounting for these observations are presented. Assuming the classical plasma emission mechanism, we can infer coronal parameters such as electron density and magnetic field near the radio source and make diagnostics on the magnetic mirror process.
description: Accepted by ApJ
The Flow of Gauge Transformations on Riemannian Surface with Boundary
Creators: name: Ai, Wanjun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58J35 (Primary), 58E15 (Secondary)

description: We consider the gauge transformations of a metric $G$-bundle over a compact Riemannian surface with boundary. By employing the heat flow method, the local existence and the long time existence of generalized solution are proved.
description: 30pages, 3figures
Measurement of many-body chaos using a quantum clock
Creators: name: Zhu, Guanyu
name: Hafezi, Mohammad
name: Grover, Tarun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: There has been recent progress in understanding chaotic features in many-body quantum systems. Motivated by the scrambling of information in black holes, it has been suggested that the time dependence of out-of-time-ordered (OTO) correlation functions such as $\langle O_2(t) O_1(0) O_2(t) O_1(0) \rangle $ is a faithful measure of quantum chaos. Experimentally, these correlators are challenging to access since they apparently require access to both forward and backward time evolution with the system Hamiltonian. Here, we propose a protocol to measure such OTO correlators using an ancilla which controls the direction of time. Specifically, by coupling the state of ancilla to the system Hamiltonian of interest, we can emulate the forward and backward time propagation, where the ancilla plays the role of a 'quantum clock'. Within this scheme, the continuous evolution of the entire system (the system of interest and the ancilla) is governed by a time-independent Hamiltonian. Our protocol is immune to errors that could occur when the direction of time evolution is externally controlled by a classical switch.
description: 11 pages + Appendices, 9 figures