cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Parameterized shadowing for nonautonomous dynamics
Creators: name: Backes, Lucas
name: Dragičević, Davor
name: Tang, Xiao
Publisher: name: arXiv
Year: 2023
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: For nonautonomous and nonlinear differential and difference equations depending on a parameter, we formulate sufficient conditions under which they exhibit $C^k$, $k\in \N$ shadowing with respect to a parameter. Our results are applicable to situations when the linear part is not hyperbolic. In the case when the linear part is hyperbolic, we obtain results dealing with parameterized Hyers-Ulam stability.
Charged black hole in a grand canonical ensemble
Creators: name: Whiting, Bernard F.
name: York Jr., James W.
name: Braden, Harry W.
name: Brown, J. David
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1990

description: A spherical charged black hole in thermal equilibrium is considered from the perspective of a grand canonical ensemble in which the electrostatic potential, temperature, and surface area are specified at a finite boundary. A correspondence is established between the boundary-value data of a well-posed problem in a finite region of Euclidean spacetime and the freely chosen thermodynamic data specifying the ensemble. The Hamiltonian and Gauss's-law constraints are solved and eliminated from the Einstein-Maxwell action, producing a ``reduced action'' that depends upon two remaining degrees of freedom (two free parameters), as well as on the thermodynamic data. The black-hole temperature, entropy, and corresponding electrostatic potential then follow from relations holding at the stationary points of the reduced action with respect to variation of the free parameters. Investigation of an appropriate eigenvalue problem shows that the criteria for local dynamical and thermodynamical stability are the same. The ensemble can be either stable or unstable, depending upon a certain relation involving mean charge, gravitational radius, and boundary radius. The role of the reduced action in determining the grand partition function, the thermodynamics of charged black holes, and the density of states is discussed.
Decentralized Beamforming for Cell-Free Massive MIMO with Unsupervised Learning
Creators: name: Hojatian, Hamed
name: Nadal, Jeremy
name: Frigon, Jean-Francois
name: Leduc-Primeau, Francois
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Cell-free massive MIMO (CF-mMIMO) systems represent a promising approach to increase the spectral efficiency of wireless communication systems. However, near-optimal beamforming solutions require a large amount of signaling exchange between access points (APs) and the network controller (NC). In this letter, we propose two unsupervised deep neural networks (DNN) architectures, fully and partially distributed, that can perform decentralized coordinated beamforming with zero or limited communication overhead between APs and NC, for both fully digital and hybrid precoding. The proposed DNNs achieve near-optimal sum-rate while also reducing computational complexity by 10-24x compared to conventional near-optimal solutions.
description: This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice
(2574) William Ramskill
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Renevier
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1827

description: Ort: Morges
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Supplementary figures, tables, and additional methods from Repeated imitation makes human vocalizations more word-like.
Creators: name: Edmiston, Pierce
name: Perlman, Marcus
name: Lupyan, Gary
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 60801 Animal Behaviour

description: Contains all supplementary figures, tables, and additional methods containing, e.g., exact instructions given to participants in all experiments.
Maxwell-Chern-Simons Casimir effect. II. Circular boundary conditions
Creators: name: Ng, Y. Jack
name: Milton, Kimball A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1990

description: The topology of (2+1)-dimensional space permits the construction of quantum electrodynamics with the usual Maxwell action augmented by a gauge-invariant, but {ital P}- and {ital T}-violating, Chern-Simons mass term. We discuss the Casimir effect between parallel lines in such a theory. The effect of finite temperature is also considered. In principle, our results provide a way to measure the topological mass of the photon.
Microcanonical functional integral for the gravitational field
Creators: name: Brown, J. David
name: York Jr., James W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: The gravitational field in a spatially finite region is described as a microcanonical system. The density of states [nu] is expressed formally as a functional integral over Lorentzian metrics and is a functional of the geometrical boundary data that are fixed in the corresponding action. These boundary data are the thermodynamical extensive variables, including the energy and angular momentum of the system. When the boundary data are chosen such that the system is described semiclassically by [ital any] real stationary axisymmetric black hole, then in this same approximation ln[nu] is shown to equal 1/4 the area of the black-hole event horizon. The canonical and grand canonical partition functions are obtained by integral transforms of [nu] that lead to imaginary-time'' functional integrals. A general form of the first law of thermodynamics for stationary black holes is derived. For the simpler case of nonrelativistic mechanics, the density of states is expressed as a real-time functional integral and then used to deduce Feynman's imaginary-time functional integral for the canonical partition function.
Rufs, Frau, von
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1827

description: Ort: Zürich
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Pfeiffer & Schmidt
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1827

description: Ort: Braunschweig
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Quantum microwave parametric interferometer
Creators: name: Kronowetter, F.
name: Fesquet, F.
name: Renger, M.
name: Honasoge, K.
name: Nojiri, Y.
name: Inomata, K.
name: Nakamura, Y.
name: Marx, A.
name: Gross, R.
name: Fedorov, K. G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Classical interferometers are indispensable tools for the precise determination of various physical quantities. Their accuracy is bound by the standard quantum limit. This limit can be overcome by using quantum states or nonlinear quantum elements. Here, we present the experimental study of a nonlinear Josephson interferometer operating in the microwave regime. Our quantum microwave parametric interferometer (QUMPI) is based on superconducting flux-driven Josephson parametric amplifiers combined with linear microwave elements. We perform a systematic analysis of the implemented QUMPI. We find that its Gaussian interferometric power exceeds the shot-noise limit and observe sub-Poissonian photon statistics in the output modes. Furthermore, we identify a low-gain operation regime of the QUMPI which is essential for optimal quantum measurements in quantum illumination protocols.
description: 6 pages, 5 figures
Röthlisberger, Joh
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1827

description: Ort: Bern
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Rascher, W. A., von
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1827

description: Ort: Chur
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Positivity of entropy in the semiclassical theory of black holes and radiation
Creators: name: Hochberg, David
name: Kephart, Thomas W.
name: York Jr., James W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: Quantum stress-energy tensors of fields renormalized on a Schwarzschild background violate the classical energy conditions near the black hole. Nevertheless, the associated equilibrium thermodynamical entropy $\Delta S$ by which such fields augment the usual black hole entropy is found to be positive. More precisely, the derivative of $\Delta S$ with respect to radius, at fixed black hole mass, is found to vanish at the horizon for {\it all} regular renormalized stress-energy quantum tensors. For the cases of conformal scalar fields and U(1) gauge fields, the corresponding second derivative is positive, indicating that $\Delta S$ has a local minimum there. Explicit calculation shows that indeed $\Delta S$ increases monotonically for increasing radius and is positive. (The same conclusions hold for a massless spin 1/2 field, but the accuracy of the stress-energy tensor we employ has not been confirmed, in contrast to the scalar and vector cases). None of these results would hold if the back-reaction of the radiation on the spacetime geometry were ignored; consequently, one must regard $\Delta S$ as arising from both the radiation fields and their effects on the gravitational field. The back-reaction, no matter how "small", Comment: 19 pages, RevTex
Pons, Louis, & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1827

description: Ort: Lyon
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
(2568) Richard Flower
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Quantum Reservoir Computing for Speckle-Disorder Potentials
Creators: name: Mujal, Pere
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Quantum reservoir computing is a machine-learning approach designed to exploit the dynamics of quantum systems with memory to process information. As an advantage, it presents the possibility to benefit from the quantum resources provided by the reservoir combined with a simple and fast training strategy. In this work, this technique is introduced with a quantum reservoir of spins and it is applied to find the ground-state energy of an additional quantum system. The quantum reservoir computer is trained with a linear model to predict the lowest energy of a particle in the presence of different speckle-disorder potentials. The performance of the task is analyzed with a focus on the observable quantities extracted from the reservoir and it shows to be enhanced when two-qubit correlations are employed.
Supplementary figures, tables, and additional methods from Repeated imitation makes human vocalizations more word-like
Creators: name: Edmiston, Pierce
name: Perlman, Marcus
name: Lupyan, Gary
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 60801 Animal Behaviour

description: Contains all supplementary figures, tables, and additional methods containing, e.g., exact instructions given to participants in all experiments.
Quasilocal energy and conserved charges derived from the gravitational action
Creators: name: York, James W.
name: Brown, J. David
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: The quasilocal energy of gravitational and matter fields in a spatially bounded region is obtained by employing a Hamilton-Jacobi analysis of the action functional. First, a surface stress-energy-momentum tensor is defined by the functional derivative of the action with respect to the three-metric on ${}^3B$, the history of the system's boundary. Energy density, momentum density, and spatial stress are defined by projecting the surface stress tensor normally and tangentially to a family of spacelike two-surfaces that foliate ${}^3B$. The integral of the energy density over such a two-surface $B$ is the quasilocal energy associated with a spacelike three-surface $\Sigma$ whose intersection with ${}^3B$ is the boundary $B$. The resulting expression for quasilocal energy is given in terms of the total mean curvature of the spatial boundary $B$ as a surface embedded in $\Sigma$. The quasilocal energy is also the value of the Hamiltonian that generates unit magnitude proper time translations on ${}^3B$ in the direction orthogonal to $B$. Conserved charges such as angular momentum are defined using the surface stress tensor and Killing vector fields on ${}^3B$. For spacetimes that are asymptotically flat in spacelike directions, the quasilocal energy and angular momentum defined here agree with the results of Arnowitt-Deser-Misner in the limit that the boundary tends to spatial infinity. For spherically symmetric spacetimes, it is shown that the quasilocal energy has the correct Newtonian limit, and includes a negative contribution due to gravitational binding.
Studies of Populations of Individuals Birds (SPI-Birds) Network and Database
Creators: name: Culina, Antica
Publisher: name: Zenodo
Year: 2020

description: One of the presentations from the First Online Session leading up to the Dutch National Open Science Festival in 2021: 'The Open Science Use Case Awards' on July 2nd 2020. The publication 'A Collection of Open Science Use Cases can be found here: https://zenodo.org/record/3903257
Exploring Spin AGP Ansatze for Strongly Correlated Spin Systems
Creators: name: Liu, Zhiyuan
name: Gao, Fei
name: Chen, Guo P.
name: Henderson, Thomas M.
name: Dukelsky, Jorge
name: Scuseria, Gustavo E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The antisymmetrized geminal power (AGP), a wave function equivalent to number-projected Hartree--Fock--Bogoliubov (HFB), and number-projected Bardeen--Cooper--Schrieffer (BCS) when working in the paired (natural orbitals) basis, has proven to be an excellent reference for strong pairing interactions. Several correlation methods have also been applied on top of AGP. In this work, we show how AGP can also be applied to spin systems by simply basing its formulation on a spin $su(2)$ algebra. We here implement spin AGP and spin AGP-based correlation techniques and benchmark them on the XXZ and $\mathrm{J_1-J_2}$ Heisenberg models, both in 1 and 2 dimensions. Our results indicate that spin AGP is a promising starting point for modeling spin systems.
description: 16 pages, 14 figures
Common origin for the solar and atmospheric neutrino deficits
Creators: name: Krastev, P. I.
name: Joshipura, Anjan S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1994

description: Large-mixing-induced ${$\nu${}}_{\mathrm{$\mu${}}}$$\leftrightarrows${}${$\nu${}}_{\mathit{e}}$ transitions can explain the deficit in the flux of the low energy atomospheric ${$\nu${}}_{\mathrm{$\mu${}}}$, whereas the solar neutrino deficit can be simultaneously explained through MSW transitions ${\mathrm{$\mu${}}}_{\mathit{e}}$$\rightarrow${}${$\nu${}}_{\mathrm{$\tau${}}}$. A combined analysis of both of these effects is presented. The large ${$\nu${}}_{\mathit{e}}$$\rightarrow${}${$\nu${}}_{\mathrm{$\mu${}}}$ mixing affects the MSW transition between ${$\nu${}}_{\mathit{e}}$ and ${$\nu${}}_{\mathrm{$\tau${}}}$ significantly. As a consequence, a large region of parameters ruled out by experiment in the two generation case is now allowed.
Effective potential of a black hole in thermal equilibrium with quantum fields
Creators: name: York Jr., James W.
name: Hochberg, David
name: Kephart, Thomas W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1994

description: Expectation values of one-loop renormalized thermal equilibrium stress-energy tensors of free conformal scalars, spin-${1 \over 2}$ fermions and U(1) gauge fields on a Schwarzschild black hole background are used as sources in the semi-classical Einstein equation. The back-reaction and new equilibrium metric are solved for at $O({\hbar})$ for each spin field. The nature of the modified black hole spacetime is revealed through calculations of the effective potential for null and timelike orbits. Significant novel features affecting the motions of both massive and massless test particles show up at lowest order in $\epsilon= (M_{Pl}/M)^2 < 1$, where $M$ is the renormalized black hole mass, and $M_{Pl}$ is the Planck mass. Specifically, we find the tendency for \underline{stable} circular photon orbits, an increase in the black hole capture cross sections, and the existence of a gravitationally repulsive region associated with the black hole which is generated from the U(1) back-reaction. We also consider the back-reaction arising from multiple fields, which will be useful for treating a black hole in thermal equilibrium with field ensembles belonging to gauge theories.
Threshold corrections and gauge symmetry in twisted superstring models
Creators: name: Pierce, David M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1994

description: Threshold corrections to the running of gauge couplings are calculated for superstring models with free complex world sheet fermions. For two [ital N]=1 SU(2)[times]U(1)[sup 5] models, the threshold corrections lead to a small increase in the unification scale. Examples are given to illustrate how a given particle spectrum can be described by models with different boundary conditions on the internal fermions. We also discuss how complex twisted fermions can enhance the symmetry group of an [ital N]=4, SU(3)[times]U(1)[times]U(1) model to the gauge group SU(3)[times]SU(2)[times]U(1). It is then shown how a mixing angle analogous to the Weinberg angle depends on the boundary conditions of the internal fermions.
(1,2) heterotic string with gauge symmetry
Creators: name: Pierce, David M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1996

description: We construct a (1,2) heterotic string with gauge symmetry and determine its particle spectrum. This theory has a local {ital N}=1 world sheet supersymmetry for left movers and a local {ital N}=2 world sheet supersymmetry for right movers and describes particles in either two or three space-time dimensions. We show that fermionizing the bosons of the compactified {ital N}=1 space leads to a particle spectrum which has non-Abelian gauge symmetry. The fermionic formulation of the theory corresponds to a dimensional reduction of self-dual Yang-Mills theory. We also give a world sheet action for the theory and calculate the one-loop path integral. {copyright} {ital 1996 The American Physical Society.}
Dicyclic horizontal symmetry and supersymmetric grand unification
Creators: name: Kong, Otto C.W.
name: Frampton, Paul H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1996

description: It is shown how to use as horizontal symmetry the dicyclic group $Q_6 \subset SU(2)$ in a supersymmetric unification $SU(5)\otimes SU(5)\otimes SU(2)$ where one $SU(5)$ acts on the first and second families, in a horizontal doublet, and the other acts on the third. This can lead to acceptable quark masses and mixings, with an economic choice of matter supermultiplets, and charged lepton masses can be accommodated. Comment: 10 pages, LaTeX
Deep Learning the Functional Renormalization Group
Creators: name: Di Sante, Domenico
name: Medvidović, Matija
name: Toschi, Alessandro
name: Sangiovanni, Giorgio
name: Franchini, Cesare
name: Sengupta, Anirvan M.
name: Millis, Andrew J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We perform a data-driven dimensionality reduction of the scale-dependent 4-point vertex function characterizing the functional Renormalization Group (fRG) flow for the widely studied two-dimensional $t - t'$ Hubbard model on the square lattice. We demonstrate that a deep learning architecture based on a Neural Ordinary Differential Equation solver in a low-dimensional latent space efficiently learns the fRG dynamics that delineates the various magnetic and $d$-wave superconducting regimes of the Hubbard model. We further present a Dynamic Mode Decomposition analysis that confirms that a small number of modes are indeed sufficient to capture the fRG dynamics. Our work demonstrates the possibility of using artificial intelligence to extract compact representations of the 4-point vertex functions for correlated electrons, a goal of utmost importance for the success of cutting-edge quantum field theoretical methods for tackling the many-electron problem.
description: 6 pages, 5 figures
Gauge-invariant effective potential: Equilibrium and nonequilibrium aspects
Creators: name: Boyanovsky, D.
name: Holman, R.
name: Brahm, D.
name: Lee, D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1996

description: We propose a gauge-invariant formulation of the effective potential in terms of a gauge-invariant order parameter, for the Abelian Higgs model. The one-loop contribution at zero and finite temperature is computed explicitly, and the leading terms in the high temperature expansion are obtained. The result is contrasted with the effective potential obtained in several covariant gauge-fixing schemes, and the gauge-invariant quantities that can be reliably extracted from these are identified. It is pointed out that the gauge-invariant effective potential in the one-loop approximation is complex for {ital all} {ital values} of the order parameter between the maximum and the minimum of the tree level potential, both at zero and nonzero temperatures. The imaginary part is related to long-wavelength instabilities towards phase separation. We study the real-time dynamics of initial states in the spinodal region, and relate the imaginary part of the effective potential to the growth rate of equal-time gauge-invariant correlation functions in these states. We conjecture that the spinodal instabilities may play a role in nonequilibrium processes {ital inside} the nucleating bubbles if the transition is first order. {copyright} {ital 1996 The American Physical Society.}
ESM Titles and Legends from Olfaction written in bone: cribriform plate size parallels olfactory receptor gene repertoires in Mammalia.
Creators: name: Bird, Deborah J.
name: Murphy, William J.
name: Fox-Rosales, Lester
name: Hamid, Iman
name: Eagle, Robert A.
name: Valkenburgh, Blaire Van
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 110601 Biomechanics
subject: FOS: Health sciences
subject: 60408 Genomics

description: The evolution of mammalian olfaction is manifested in a remarkable diversity of gene repertoires, neuroanatomy and skull morphology across living species. Olfactory receptor genes (ORGs), which initiate the conversion of odorant molecules into odour perceptions and help an animal resolve the olfactory world, range in number from a mere handful to several thousand genes across species. Within the snout, each of these ORGs is exclusively expressed by a discrete population of olfactory sensory neurons (OSNs), suggesting that newly evolved ORGs may be coupled with new OSN populations in the nasal epithelium. Because OSN axon bundles leave high-fidelity perforations (foramina) in the bone as they traverse the cribriform plate (CP) to reach the brain, we predicted that taxa with larger ORG repertoires would have proportionately expanded footprints in the CP foramina. Previous work found a correlation between ORG number and absolute CP size that disappeared after accounting for body size. Using updated, digital measurement data from high-resolution CT scans and re-examining the relationship between CP and body size, we report a striking linear correlation between relative CP area and number of functional ORGs across species from all mammalian superorders. This correlation suggests strong developmental links in the olfactory pathway between genes, neurons and skull morphology. Furthermore, because ORG number is linked to olfactory discriminatory function, this correlation supports relative CP size as a viable metric for inferring olfactory capacity across modern and extinct species. By quantifying CP area from a fossil sabertooth cat (Smilodon fatalis), we predicted a likely ORG repertoire for this extinct felid.
Über Pfahlbauten, Mammuts, Ritter und Römer - an ausserschulischen Lernorten lebt Geschichte auf
Creators: name: Gautschi, Peter (Andere)
Publisher: name: Zenodo
Year: 2020
Subjects: Kulturelles Erbe
archäologische Orte
historische Orte
ausserschulische Lernorte
Geschichtsvermittlung

description: Die kantonalen Fachstellen Denkmalpflege und Archäologie schützen und pflegen das kulturelle Erbe Luzerns. An Denkmälern und archäologischen Orten quer durch den Kanton vermitteln sie Kulturgeschichte. Mit dem Besuch historischer Orte erhalten Schülerinnen und Schüler einen bleibenden Eindruck von vergangenen Kulturen und Zeiten. Über Geschichtsvermittlung und Unterricht ausserhalb der Schule sprachen Jürg Manser und Jasmin Gerig mit dem Geschichtsdidaktiker Peter Gautschi.
description: + ID der Publikation: phlu_14930 + Art des Beitrages: Interview + Medium/Art/Gattung: Blog des Bildungs- und Kulturdepartements Luzern + Sprache: Deutsch + Letzte Aktualisierung: 2022-09-07 12:05:08
Relaxation and kinetics in scalar field theories
Creators: name: Lee, D.
name: Lawrie, I. D.
name: Boyanovsky, D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1996

description: A new approach to the dynamics of relaxation and kinetics of thermalization in a scalar field theory is presented that incorporates the relevant time scales through the resummation of hard thermal loops. An alternative derivation of the kinetic equations for the {open_quote}{open_quote}quasiparticle{close_quote}{close_quote} distribution functions is obtained that allows a clear understanding of the different {open_quote}{open_quote}coarse-graining{close_quote}{close_quote} approximations usually involved in a kinetic description. This method leads to a systematic perturbative expansion to obtain the kinetic equations including hard thermal loop resummation and to an improvement including renormalization, off-shell effects, and contributions that change chemical equilibrium on short time scales. As a by-product of these methods we establish the equivalence between the relaxation time scale in the linearized equation of motion of the quasiparticles and the thermalization time scale of the quasiparticle distribution function in the {open_quote}{open_quote}relaxation time approximation{close_quote}{close_quote} including hard thermal loop effects. Hard thermal loop resummation dramatically modifies the scattering rate for long wavelength modes as compared to the usual (semi)classical estimate. Relaxation and kinetics are studied both in the unbroken and broken symmetry phases of the theory. The broken symmetry phase also provides the setting to obtain the contribution to the kinetic equations from processes that involve decay ofmore » a heavy scalar into light scalar particles in the medium. {copyright} {ital 1996 The American Physical Society.}« less
Supplementary Figures and Tables from Olfaction written in bone: cribriform plate size parallels olfactory receptor gene repertoires in Mammalia.
Creators: name: Bird, Deborah J.
name: Murphy, William J.
name: Fox-Rosales, Lester
name: Hamid, Iman
name: Eagle, Robert A.
name: Valkenburgh, Blaire Van
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 110601 Biomechanics
subject: FOS: Health sciences
subject: 60408 Genomics

description: The evolution of mammalian olfaction is manifested in a remarkable diversity of gene repertoires, neuroanatomy and skull morphology across living species. Olfactory receptor genes (ORGs), which initiate the conversion of odorant molecules into odour perceptions and help an animal resolve the olfactory world, range in number from a mere handful to several thousand genes across species. Within the snout, each of these ORGs is exclusively expressed by a discrete population of olfactory sensory neurons (OSNs), suggesting that newly evolved ORGs may be coupled with new OSN populations in the nasal epithelium. Because OSN axon bundles leave high-fidelity perforations (foramina) in the bone as they traverse the cribriform plate (CP) to reach the brain, we predicted that taxa with larger ORG repertoires would have proportionately expanded footprints in the CP foramina. Previous work found a correlation between ORG number and absolute CP size that disappeared after accounting for body size. Using updated, digital measurement data from high-resolution CT scans and re-examining the relationship between CP and body size, we report a striking linear correlation between relative CP area and number of functional ORGs across species from all mammalian superorders. This correlation suggests strong developmental links in the olfactory pathway between genes, neurons and skull morphology. Furthermore, because ORG number is linked to olfactory discriminatory function, this correlation supports relative CP size as a viable metric for inferring olfactory capacity across modern and extinct species. By quantifying CP area from a fossil sabertooth cat (Smilodon fatalis), we predicted a likely ORG repertoire for this extinct felid.
Binary string dynamics
Creators: name: Dasgupta, Indranil
name: Rohm, Ryan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1997

description: In this paper we investigate the dynamical properties of binary cosmic strings. We find extrinsic curvature dependence of the string action and show that kinks on binary strings are eroded while cusps can play a major role in their evolution. Comment: 10 pages, plain TeX, uses harvmac and epsf, 1 postscript figure
(2569) Richard Flower
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
title: Putting things in perspective: how goals and value shape the experience of emotion
Creators: name: Alzubaidi, Umkalthoom Hamed
Publisher: name: University of Reading
Year: 2025

description: The aim of the studies in this thesis was to examine whether reminders of values and goals allow people to put stressors into perspective and thus reduce stress. Study 1 of the dissertation tested whether giving participants a chance to self-affirm, which means reminding them of important values other than the stress-causing stimulus, lowers the stressor's significance and makes them want to regulate their stress. In the second study, participants were reminded of important goals (versus less important goals or nothing in the control conditions) to determine whether reminders of important goals lower stress responses. Lastly, in Study 3, participants were instructed to put a stressor into perspective to see whether it would reduce stress on various explicit and implicit measures of stress and coping. The main findings of the thesis show that self-affirmation and instructed perspective taking have the potential to affect the experience of stress, especially when taking into account individual difference variables, such as trait anxiety or habitual perspective taking. The results are discussed in light of existing knowledge, and some recommendations are made for future research and specialists in the fields of social and clinical psychology.
Energy of isolated systems at retarded times as the null limit of quasilocal energy
Creators: name: York, James W.
name: Brown, J. David
name: Lau, Stephen R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1997

description: We define the energy of a perfectly isolated system at a given retarded time as the suitable null limit of the quasilocal energy \(E\). The result coincides with the Bondi-Sachs mass. Our \(E\) is the lapse-unity shift-zero boundary value of the gravitational Hamiltonian appropriate for the partial system \(\Sigma\) contained within a finite topologically spherical boundary \(B = \partial \Sigma\). Moreover, we show that with an arbitrary lapse and zero shift the same null limit of the Hamiltonian defines a physically meaningful element in the space dual to supertranslations. This result is specialized to yield an expression for the full Bondi-Sachs four-momentum in terms of Hamiltonian values.
Some physical applications of generalized Lambert functions
Creators: name: Mező, István
name: Keady, Grant
Publisher: name: arXiv
Year: 2015
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In this paper we review the physical applications of the generalized Lambert function recently defined by the first author. Among these applications we mention the eigenstate anomaly of the $H_2^+$ ion, the two dimensional two-body problem in general relativity, the stability analysis of delay differential equations and water-wave applications. We also point out that the inverse Langevin function is nothing else but a specially parametrized generalized Lambert function.
description: arXiv admin note: substantial text overlap with arXiv:1408.3999
Reiss, Elias Loeb
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1827

description: Ort: Frankfurt a. M.
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
MeROS: SysML-based Metamodel for ROS-based Systems
Creators: name: Winiarski, Tomasz
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: The complexity of today's robot control systems implies difficulty in developing them efficiently and reliably. Systems engineering (SE) and frameworks come to help. The framework metamodels are needed to support the standardisation and correctness of the created application models. Although the use of frameworks is widespread nowadays, for the most popular of them, Robot Operating System (ROS), a contemporary metamodel has been missing so far. This article proposes a new metamodel for ROS called MeROS, which addresses the running system and developer workspace. The ROS comes in two versions: ROS 1 and ROS 2. The metamodel includes both versions. In particular, the latest ROS 1 concepts are considered, such as nodelet, action, and metapackage. An essential addition to the original ROS concepts is the grouping of these concepts, which provides an opportunity to illustrate the system's decomposition and varying degrees of detail in its presentation. The metamodel is derived from the requirements and verified on the practical example of Rico assistive robot. The matter is described in a standardised way in SysML (Systems Modeling Language). Hence, common development tools that support SysML can help develop robot controllers in the spirit of SE.
Quarks, squarks, and textures
Creators: name: Frampton, Paul H.
name: Kong, Otto C.W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1997

description: By studying symmetric mass textures for the up and down quark sectors, and expanding in a small parameter $\lambda \sim sin\theta_C$, bounds are set on entries commonly assumed to vanish. Consequences of a 2 + 1 family structure which can result from horizontal symmetry are examined. Generalizing to squarks, we study suppression of Flavor Changing Neutral Currents by mass degeneracy and/or small mixing angles. Comment: Slight modifications in presentation; one table added; version to appear in Phys.Rev.D
Polach, F. W. (c/o Reichenbach & Co.)
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1827

description: Ort: Berlin
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Peugeot Frères
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1827

description: Ort: Herimoncourt
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Power law singularity for cavity collapse in a compressible Euler fluid with Tait-Murnaghan equation of state
Creators: name: Krimans, Daniels
name: Putterman, Seth
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Motivated by the high energy focusing found in rapidly collapsing bubbles that is relevant to implosion processes that concentrate energy density, such as sonoluminescence, we consider a calculation of an empty cavity collapse in a compressible Euler fluid. We review and then use the method based on similarity theory that was previously used to compute the power law exponent $n$ for the collapse of an empty cavity in water during the late stage of the collapse. We extend this calculation by considering different fluids surrounding the cavity, all of which are parametrized by the Tait-Murnaghan equation of state through parameter $γ$. As a result, we obtain the dependence of $n$ on $γ$ for a wide range of $γ$, and indeed see that the collapse is sensitive to the equation of state of an outside fluid.
description: 6 pages, 2 figures
Preiswerk, Johannes, & Sohn
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1827

description: Ort: Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Mentlin, Gebrüder & Molo
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1827

description: Ort: Bellinzona
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
ESM Titles and Legends from Olfaction written in bone: cribriform plate size parallels olfactory receptor gene repertoires in Mammalia
Creators: name: Bird, Deborah J.
name: Murphy, William J.
name: Fox-Rosales, Lester
name: Hamid, Iman
name: Eagle, Robert A.
name: Valkenburgh, Blaire Van
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 110601 Biomechanics
subject: FOS: Health sciences
subject: 60408 Genomics

description: The evolution of mammalian olfaction is manifested in a remarkable diversity of gene repertoires, neuroanatomy and skull morphology across living species. Olfactory receptor genes (ORGs), which initiate the conversion of odorant molecules into odour perceptions and help an animal resolve the olfactory world, range in number from a mere handful to several thousand genes across species. Within the snout, each of these ORGs is exclusively expressed by a discrete population of olfactory sensory neurons (OSNs), suggesting that newly evolved ORGs may be coupled with new OSN populations in the nasal epithelium. Because OSNs axon bundles leave high-fidelity perforations (foramina) in the bone as they traverse the cribriform plate (CP) to reach the brain, we predicted that taxa with larger ORG repertoires would have proportionately expanded footprints in the CP foramina. Previous work found a correlation between ORG number and absolute CP size that disappeared when body size effects were accounted for. Using updated, digital measurement data from high-resolution CT scans and re-examining the relationship between CP and body size, we report a striking linear correlation between relative CP area and number of functional ORGs across species from all mammalian superorders. This correlation suggests strong developmental links in the olfactory pathway between genes, neurons and skull morphology. Furthermore, because ORG number is linked to olfactory discriminatory function, this correlation supports relative CP size as a viable metric for inferring olfactory capacity across modern and extinct species. By quantifying CP area from a fossil sabertooth cat (Smilodon fatalis), we predicted a likely ORG repertoire for this extinct felid.
Cauchy-perturbative matching and outer boundary conditions: Methods and tests
Creators: name: Abrahams, A. M.
name: Rezzolla, L.
name: Rupright, M. E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1998

description: We present a new method of extracting gravitational radiation from three-dimensional numerical relativity codes and providing outer boundary conditions. Our approach matches the solution of a Cauchy evolution of Einstein's equations to a set of one-dimensional linear wave equations on a curved background. We illustrate the mathematical properties of our approach and discuss a numerical module we have constructed for this purpose. This module implements the perturbative matching approach in connection with a generic three-dimensional numerical relativity simulation. Tests of its accuracy and second-order convergence are presented with analytic linear wave data.
Supplementary Table 1 from Early hatching enhances survival despite beneficial phenotypic effects of late-season developmental environments.
Creators: name: P. R. Pearson
name: D. A. Warner
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: Sex differences in offspring development and phenotypes. Although the effect of sex on snout-vent length (SVL) was statistically significant, males and females differed by only 0.3 mm. Traits denoted by ‘*’ represent egg mass as a covariate and by ‘**’ represent SVL as a covariate. For body condition, analyses used hatchling mass as the dependent variable and SVL as a covariate, but descriptive statistics are reported as residual scores from a mass-length regression analysis. Bold face values are statistically significant.
Chiral phase transition of QCD at finite temperature and density from the Schwinger-Dyson equation
Creators: name: Shibata, Akihiro
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1998

description: We study the chiral phase transition of QCD at finite temperature and density by numerically solving Schwinger-Dyson equation for the quark propagator with the improved ladder approximation in the Landau gauge. Using the solution we calculate a pion decay constant from a generalized version of Pagels-Stokar formula. Chiral phase transition point is determined by analyzing an effective potential for the quark propagator. We find solutions for which chiral symmetry is broken while the value of the effective potential is larger than that for the chiral symmetric vacuum. These solutions correspond to meta-stable states, and the chiral symmetric vacuum is energetically favored. We present a phase diagram on the general temperature--chemical potential plane, and show that phase transitions are of first order in wide range.
(2570) Joseph Wilson
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.