cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analysis of conducting-system frequency response data for an interfacial amorphous phase of copper-core oxide-shell nanocomposites
Creators: name: Basu, S.
name: Chakravorty, D.
name: MacDonald, J. R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005

description: Complex electrical-conductivity experimental data sets for the interfacial amorphous phase in copper-core-copper-oxide-shell nanostructured composites have been analyzed using two Kohlrausch-related frequency response models recently developed for analysis of the dispersive electrical response of conductive materials. Such analysis has been carried out for both the precursor (herein referred to as the reference) glass as well as the glass in which the core-shell nanostructure was developed after suitable heat treatment. Complex nonlinear-least-squares data fitting at each temperature employed composite Kohlrausch models that included electrode effects. Because of the lack of sufficient high-frequency data, it was necessary to use fixed, rather than free, values of the shape parameter beta1 of the model. On the basis of topological considerations, its values were set at 13 and 23 for the reference glass and the core-shell structured glass, respectively. The activation energies of resistivity for the reference and the treated glasses were found to have values of about 2 and 0.4 eV, respectively, indicating two different mechanisms of electrical conduction. A blocking-electrode measurement on the reference glass indicated the presence of an electronic as well as an ionic component of the electrical conductivity, with the ionic part dominating at the temperatures for which the present analyses were carried out.
(1505) Robert Singleton Garnett
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.
Supplementary material on theory and experiments from Modelling and testing of a wave energy converter based on dielectric elastomer generators
Creators: name: Moretti, Giacomo
name: Papini, Gastone Pietro Rosati
name: Daniele, Luca
name: Forehand, David
name: Ingram, David
name: Vertechy, Rocco
name: Fontana, Marco
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: 91103 Ocean Engineering
subject: FOS: Environmental engineering
subject: 91305 Energy Generation, Conversion and Storage Engineering
subject: FOS: Mechanical engineering

description: Supplementary material that provides more details on the hydrodynamic model, the experimental procedures/analysis and presents additional datasets acquired during tests.
Fractional Liouville Equation on Lattice Phase-Space
Creators: name: Tarasov, Vasily E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we propose a lattice analog of phase-space fractional Liouville equation. The Liouville equation for phase-space lattice with long-range jumps of power-law types is suggested. We prove that the continuum limit transforms this lattice equation into Liouville equation with conjugate Riesz fractional derivatives of non-integer orders with respect to coordinates of continuum phase-space. An application of the fractional Liouville equation with these Riesz fractional derivatives to describe properties of plasma-like nonlocal media is considered.
description: 22 pages, LaTeX
Morphed vertical tailplane assessment for certification requirements
Creators: name: Castillo Acero, Miguel Á.
Publisher: name: Zenodo
Year: 2015
Subjects: Clean Sky 2 Joint Undertaking
European Union (EU)
Horizon 2020
HLFC
Clean Sky 2
CEAS

description: This study focuses on incorporating a novel morphing rudder for a commercial transport aircraft from the certification conditions perspective.
 The objective is to characterize the static directional- lateral stability evaluation of a two jet engined wing podded commercial transport aircraft when changing its conventional rudder configuration to a more aerodynamic efficient morphing configuration. This project has received funding from the Clean Sky 2 Joint Undertaking (JU) under grant agreement No CS2-LPA-GAM-2014-2015-01. The JU receives support from the European Union’s Horizon 2020 research and innovation programme and the Clean Sky 2 JU members other than the Union. The results, opinions, conclusions, etc. presented in this work are those of the author(s) only and do not necessarily represent the position of the JU; the JU is not responsible for any use made of the information contained herein.
Thermopower and thermoelectric power factor of ${\mathbb Z}_k$ parafermion quantum dots
Creators: name: Georgiev, Lachezar S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using the conformal field theory approach to the thermoelectric characteristics of fractional quantum Hall states, previously developed in Nucl. Phys. B 894 (2015) 284, we show that the thermoelectric power factor of Coulomb-blockaded islands, realized by point contacts in Fabry--Pérot interferometers in the $\mathbb{Z}_k$ parafermion Hall states, could give reliable signatures for distinguishing the topological orders of different quantum Hall states having identical electric properties. For example, while the conductance peak patterns in the Coulomb blockade regime for such states are practically indistinguishable for $v_n \ll v_c$ even at finite temperature, where $v_n$ and $v_c$ are the Fermi velocities of the neutral and charged modes respectively, the power factors $\mathcal{P}_T$ of the corresponding states are much more sensitive to the neutral modes. In particular, the smaller $r=v_n/v_c$ the bigger the asymmetries in the power factor which combined with the thermal broadening of the conductance peaks due to the neutral modes' multiplicities could give us the ultimate tool to figure out which of the competing quantum Hall universality classes are indeed realized in the experiments. We give a complete description of the power factor profiles in the $\mathbb{Z}_3$ and $\mathbb{Z}_4$ parafermion states with arbitrary number of quasiparticles localized in the bulk which could be useful for comparison with the experiments.
description: 27 pages, 12 PDF figures; v2: added two more references and corrected several misprints
(1499) Fanny [Garnett]
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.
Topological derivation of shape exponents for stretched exponential relaxation
Creators: name: Phillips, J. C.
name: MacDonald, J. R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005

description: In homogeneous (ideal) glasses, the important dimensionless stretched-exponential shape parameter beta is described by magic (not adjusted) simple fractions derived from fractal configuration spaces of effective dimension d* determined by different topological axioms (rules) in the presence (absence) of a forcing electric field. The rules are based on a new central principle for defining glassy states: equal a priori distributions of fractal residual configurational entropy. Our approach and its beta estimates are fully supported by the results of relaxation measurements involving many different glassy materials and probe methods. The present unique topological predictions for beta typically agree with observed values to approximately 1% and indicate that for field-forced conditions beta should be constant for appreciable ranges of such exogenous variables as temperature and ionic concentration, as indeed observed using appropriate frequency-domain data analysis. The present approach can also be inverted and used to test sample homogeneity and quality.
(1500) Peter Garnett
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.
A variational approach to the stochastic aspects of cellular signal transduction
Creators: name: Lan, Yueheng
name: Papoian, Garegin A.
name: Wolynes, Peter G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: Cellular signaling networks have evolved to cope with intrinsic fluctuations, coming from the small numbers of constituents, and the environmental noise. Stochastic chemical kinetics equations govern the way biochemical networks process noisy signals. The essential difficulty associated with the master equation approach to solving the stochastic chemical kinetics problem is the enormous number of ordinary differential equations involved. In this work, we show how to achieve tremendous reduction in the dimensionality of specific reaction cascade dynamics by solving variationally an equivalent quantum field theoretic formulation of stochastic chemical kinetics. The present formulation avoids cumbersome commutator computations in the derivation of evolution equations, making more transparent the physical significance of the variational method. We propose novel time-dependent basis functions which work well over a wide range of rate parameters. We apply the new basis functions to describe stochastic signaling in several enzymatic cascades and compare the results so obtained with those from alternative solution techniques. The variational ansatz gives probability distributions that agree well with the exact ones, even when fluctuations are large and discreteness and nonlinearity are important. A numerical implementation of our technique is many orders of magnitude more efficient computationally compared with the traditional Monte Carlo simulation algorithms or the Langevin simulations.
Model selection for amplitude analysis
Creators: name: Guegan, Baptiste
name: Hardin, John
name: Stevens, Justin
name: Williams, Mike
Publisher: name: arXiv
Year: 2015
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Model complexity in amplitude analyses is often a priori under-constrained since the underlying theory permits a large number of possible amplitudes to contribute to most physical processes. The use of an overly complex model results in reduced predictive power and worse resolution on unknown parameters of interest. Therefore, it is common to reduce the complexity by removing from consideration some subset of the allowed amplitudes. This paper studies a method for limiting model complexity from the data sample itself through regularization during regression in the context of a multivariate (Dalitz-plot) analysis. The regularization technique applied greatly improves the performance. An outline of how to obtain the significance of a resonance in a multivariate amplitude analysis is also provided.
(1501) Mary [Garnett]
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.
Gene regulatory networks: A coarse-grained, equation-free approach to multiscale computation
Creators: name: Kevrekidis, Ioannis G.
name: Erban, Radek
name: Adalsteinsson, David
name: Elston, Timothy C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: We present computer-assisted methods for analyzing stochastic models of gene regulatory networks. The main idea that underlies this equation-free analysis is the design and execution of appropriately initialized short bursts of stochastic simulations; the results of these are processed to estimate coarse-grained quantities of interest, such as mesoscopic transport coefficients. In particular, using a simple model of a genetic toggle switch, we illustrate the computation of an effective free energy Phi and of a state-dependent effective diffusion coefficient D that characterize an unavailable effective Fokker-Planck equation. Additionally we illustrate the linking of equation-free techniques with continuation methods for performing a form of stochastic
Electronic supplementary material S2 and S3: Supplementary information from Non-native honeybees disproportionately dominate the most abundant floral resources in a biodiversity hotspot
Creators: name: Keng-Lou James Hung
name: Kingston, Jennifer M.
name: Lee, Adrienne
name: Holway, David A.
name: Kohn, Joshua R.
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: Map of study sites and results of supporting analyses
Chern-Simons-Higgs Theory with Visible and Hidden Sectors and its ${\cal N}=2$ SUSY Extension
Creators: name: Arias, Paola
name: Ireson, Edwin
name: Schaposnik, Fidel A.
name: Tallarita, Gianni
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study vortex solutions in Abelian Chern-Simons-Higgs theories with visible and hidden sectors. We first consider the case in which the two sectors are connected through a BF-like gauge mixing term with no explicit interaction between the the two scalars. Since first order Bogomolny equations do not exist in this case, we derive the second order field equations. We then proceed to an ${\cal N}=2$ supersymmetric extension including a Higgs portal mixing among the visible and hidden charged scalars. As expected, Bogomolnyi equations do exist in this case and we study their string-like solutions numerically.
description: 10 pages, 12 figures. Several typos fixed and the Gauss law is explicitly written, figures correctly shown. Accepted in PLB
(1496) Harriet Fraser
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.
Dynamic nuclear polarization as kinetically constrained diffusion
Creators: name: Karabanov, Alexander
name: Wisniewski, Daniel
name: Lesanovsky, Igor
name: Köckenberger, Walter
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dynamic nuclear polarization (DNP) is a promising strategy for generating a significantly increased non-thermal spin polarization in nuclear magnetic resonance (NMR) applications thereby circumventing the need for strong magnetic fields. Although much explored in recent experiments, a detailed theoretical understanding of the precise mechanism behind DNP is so far lacking. We address this issue by theoretically investigating solid effect DNP in a system where a single electron is coupled to an ensemble of interacting nuclei and which can be microscopically modelled by a quantum master equation. By deriving effective equations of motion that govern the polarization dynamics we show analytically that DNP can be understood as kinetically constrained spin diffusion. On the one hand this approach provides analytical insights into the mechanism and timescales underlying DNP. On the other hand it permits the numerical study of large ensembles which are typically intractable from the perspective of a quantum master equation. This paves the way for a detailed exploration of DNP dynamics which might form the basis for future NMR applications.
description: 13 pages, 5 figures
(1498) Thomas Garnett
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.
Supplemental Information from Speed-mediated properties of schooling.
Creators: name: Kent, Maud I. A.
name: Lukeman, Ryan
name: Lizier, Joseph T.
name: Ward, Ashley J. W.
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Table S1 contains information about each rainbowfish species used while Figure S1 shows the effect of speed on linear positioning by species
Planets in Other Universes: Habitability constraints on density fluctuations and galactic structure
Creators: name: Adams, Fred C.
name: Coppess, Katherine R.
name: Bloch, Anthony M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Motivated by the possibility that different versions of the laws of physics could be realized within other universes, this paper delineates the galactic parameters that allow for habitable planets and revisits constraints on the amplitude $Q$ of the primordial density fluctuations. Previous work indicates that large values of $Q$ lead to galaxies so dense that planetary orbits cannot survive long enough for life to develop. Small values of $Q$ lead to delayed star formation, loosely bound galaxies, and compromised heavy element retention. This work generalizes previous treatments: [A] We consider models for the internal structure of galaxies and find the fraction of galactic real estate that allows stable, long-lived planetary orbits. [B] We perform a large ensemble of numerical simulations to estimate cross sections for the disruption of planetary orbits due to interactions with passing stars. [C] We consider disruption due to the background radiation fields produced by the galaxies. [D] One consequence of intense galactic background radiation fields is that some portion of the galaxy, denoted as the Galactic Habitable Zone, will provide the right flux levels to support habitable planets for essentially any planetary orbit. As $Q$ increases, the fraction of stars in a galaxy that allow for habitable planets decreases due to both orbital disruption and the intense background radiation. However, the outer parts of the galaxy always allow for habitable planets, so that the value of $Q$ does not have a well-defined upper limit. Moreover, some Galactic Habitable Zones are large enough to support more potentially habitable planets than the galaxies found in our universe. These results suggest that the possibilities for habitability in other universes are somewhat more favorable and far more diverse than previously imagined.
description: 28 pages, 5 figures; version includes responses to two referees; accepted to JCAP
Supplemental Information from Speed-mediated properties of schooling
Creators: name: Kent, Maud I. A.
name: Lukeman, Ryan
name: Lizier, Joseph T.
name: Ward, Ashley J. W.
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Table S1 contains information about each rainbowfish species used while Figure S1 shows the effect of speed on linear positioning by species
Supplementary material - Details on study area, species, methods and additional results from Ocean acidification affects somatic and otolith growth relationship in fish: evidence from an in situ study.
Creators: name: Franco, Antonio Di
name: Calò, Antonio
name: Sdiri, Khalil
name: Cattano, Carlo
name: Milazzo, Marco
name: Guidetti, Paolo
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Environmental Science
subject: Ecology
subject: FOS: Biological sciences

description: Ocean acidification (OA) may have varied effects on fish eco-physiological responses. Most OA studies have been carried out in laboratory conditions without considering the in situ pCO2/pH variability documented for many marine coastal ecosystems. Using a standard otolith ageing technique, we assessed how in situ ocean acidification (ambient, versus end-of-century CO2 levels) can affect somatic and otolith growth, and their relationship in a coastal fish. Somatic and otolith growth rates of juveniles of the ocellated wrasse Symphodus ocellatus living off a Mediterranean CO2 seep increased at the high-pCO2 site. Also, we detected that slower-growing individuals living at ambient pCO2 levels tend to have larger otoliths at the same somatic length (i.e. higher relative size of otoliths to fish body length) than faster-growing conspecifics living under high pCO2 conditions, with this being attributable to the so-called ‘growth effect’. Our findings suggest the possibility of contrasting OA effects on fish fitness, with higher somatic growth rate and possibly higher survival associated with smaller relative size of otoliths that could impair fish auditory and vestibular sensitivity.
The interplay between discrete noise and nonlinear chemical kinetics in a signal amplification cascade
Creators: name: Papoian, Garegin A.
name: Lan, Yueheng
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: We used various analytical and numerical techniques to elucidate signal propagation in a small enzymatic cascade which is subjected to external and internal noises. The nonlinear character of catalytic reactions, which underlie protein signal transduction cascades, renders stochastic signaling dynamics in cytosol biochemical networks distinct from the usual description of stochastic dynamics in gene regulatory networks. For a simple two-step enzymatic cascade which underlies many important protein signaling pathways, we demonstrated that the commonly used techniques such as the linear noise approximation and the Langevin equation become inadequate when the number of proteins becomes too low. Consequently, we developed a new analytical approximation, based on mixing the generating function and distribution function approaches, to the solution of the master equation that describes nonlinear chemical signaling kinetics for this important class of biochemical reactions. Our techniques work in a much wider range of protein number fluctuations than the methods used previously. We found that under certain conditions the burst phase noise may be injected into the downstream signaling network dynamics, resulting possibly in unusually large macroscopic fluctuations. In addition to computing first and second moments, which is the goal of commonly used analytical techniques, our new approach provides the full time-dependent probability distributions of the colored non-Gaussian processes in a nonlinear signal transduction cascade.
Family-Size Farms in U.S. Agriculture
Creators: name: Nikolitch, Radoje
name: Nikolitch, Radoje
Publisher: name: Unknown
Year: 1972
Subjects: Crop Production/Industries
Farm Management
Labor and Human Capital
Land Economics/Use
Livestock Production/Industries

description: Family farms and large-scale farming operations continue proportionally almost unchanged in their traditional regional locations. Family farms account for the bulk of farm production in the north-central part of the country. Large-scale farming is, as it always was, the rule in California, Florida, and some other States. Farming in the rest of the country is in between; family farms have a slight majority. For the country as a whole, family farms accounted for 95 percent of all farms and for 63 percent of all farm products sold in 1949. In 1969, these proportions were 95 percent and 62 percent.
description: A few tables are blurred in the PDF of the report.
Energy loss, hadronization and hadronic interactions of heavy flavors in relativistic heavy-ion collisions
Creators: name: Cao, Shanshan
name: Qin, Guang-You
name: Bass, Steffen A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We construct a theoretical framework to describe the evolution of heavy flavors produced in relativistic heavy-ion collisions. The in-medium energy loss of heavy quarks is described using our modified Langevin equation that incorporates both quasi-elastic scatterings and the medium-induced gluon radiation. The space-time profiles of the fireball is described by a (2+1)-dimensional hydrodynamics simulation. A hybrid model of fragmentation and coalescence is utilized for heavy quark hadronization, after which the produced heavy mesons together with the soft hadrons produced from the bulk QGP are fed into the hadron cascade UrQMD model to simulate the subsequent hadronic interactions. We find that the medium-induced gluon radiation contributes significantly to heavy quark energy loss at high $p_\mathrm{T}$; heavy-light quark coalescence enhances heavy meson production at intermediate $p_\mathrm{T}$; and scatterings inside the hadron gas further suppress the $D$ meson $R_\mathrm{AA}$ at large $p_\mathrm{T}$ and enhance its $v_2$. Our calculations provide good descriptions of heavy meson suppression and elliptic flow observed at both the LHC and RHIC.
description: 13 pages, 12 figures
Variable-free exploration of stochastic models: A gene regulatory network example
Creators: name: Kevrekidis, Ioannis G.
name: Wang, Xiao
name: Frewen, Thomas A.
name: Nadler, Boaz
name: Elston, Timothy C.
name: Erban, Radek
name: Coifman, Ronald
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Finding coarse-grained, low-dimensional descriptions is an important task in the analysis of complex, stochastic models of gene regulatory networks. This task involves (a) identifying observables that best describe the state of these complex systems and (b) characterizing the dynamics of the observables. In a previous paper [13], we assumed that good observables were known a priori, and presented an equation-free approach to approximate coarse-grained quantities (i.e, effective drift and diffusion coefficients) that characterize the long-time behavior of the observables. Here we use diffusion maps [9] to extract appropriate observables ("reduction coordinates") in an automated fashion; these involve the leading eigenvectors of a weighted Laplacian on a graph constructed from network simulation data. We present lifting and restriction procedures for translating between physical variables and these data-based observables. These procedures allow us to perform equation-free coarse-grained, computations characterizing the long-term dynamics through the design and processing of short bursts of stochastic simulation initialized at appropriate values of the data-based observables.
A consistent hierarchy of generalized kinetic equation approximations to the master equation applied to surface catalysis
Creators: name: Mitran, Sorin
name: Herschlag, Gregory J.
name: Lin, Guang
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: We develop a hierarchy of approximations to the master equation for systems that exhibit translational invariance and finite-range spatial correlation. Each approximation within the hierarchy is a set of ordinary differential equations that considers spatial correlations of varying lattice distance; the assumption is that the full system will have finite spatial correlations and thus the behavior of the models within the hierarchy will approach that of the full system. We provide evidence of this convergence in the context of one- and two-dimensional numerical examples. Lower levels within the hierarchy that consider shorter spatial correlations are shown to be up to three orders of magnitude faster than traditional kinetic Monte Carlo methods (KMC) for one-dimensional systems, while predicting similar system dynamics and steady states as KMC methods. We then test the hierarchy on a two-dimensional model for the oxidation of CO on RuO2(110), showing that low-order truncations of the hierarchy efficiently capture the essential system dynamics. By considering sequences of models in the hierarchy that account for longer spatial correlations, successive model predictions may be used to establish empirical approximation of error estimates. The hierarchy may be thought of as a class of generalized phenomenological kinetic models since each element of the hierarchy approximates the master equation and the lowest level in the hierarchy is identical to a simple existing phenomenological kinetic models.
Vibrational properties of organic donor-acceptor molecular crystals: Anthracene-pyromellitic-dianhydride (PMDA) as a case study
Creators: name: Fonari, A.
name: Corbin, N. S.
name: Vermeulen, D.
name: Jurchescu, O. D.
name: Bredas, J. L.
name: McNeil, L. E.
name: Goetz, K. P.
name: Coropceanu, V.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: We establish a reliable quantum-mechanical approach to evaluate the vibrational properties of donor-acceptor molecular crystals. The anthracene-PMDA (PMDA = pyromellitic dianhydride) crystal, where anthracene acts as the electron donor and PMDA as the electron acceptor, is taken as a representative system for which experimental non-resonance Raman spectra are also reported. We first investigate the impact that the amount of nonlocal Hartree-Fock exchange (HFE) included in a hybrid density functional has on the geometry, normal vibrational modes, electronic coupling, and electron-vibrational (phonon) couplings. The comparison between experimental and theoretical Raman spectra indicates that the results based on the αPBE functional with 25%-35% HFE are in better agreement with the experimental results compared to those obtained with the pure PBE functional. Then, taking αPBE with 25% HFE, we assign the vibrational modes and examine their contributions to the relaxation energy related to the nonlocal electron-vibration interactions. The results show that the largest contribution (about 90%) is due to electron interactions with low-frequency vibrational modes. The relaxation energy in anthracene-PMDA is found to be about five times smaller than the electronic coupling.
(1494) Agnes Fraser Nickols
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.
Ariadne's Thread - Interactive Navigation in a World of Networked Information
Creators: name: Koopman, Rob
name: Wang, Shenghui
name: Scharnhorst, Andrea
name: Englebienne, Gwenn
Publisher: name: arXiv
Year: 2015
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences
subject: H.5.2; H.3.3

description: This work-in-progress paper introduces an interface for the interactive visual exploration of the context of queries using the ArticleFirst database, a product of OCLC. We describe a workflow which allows the user to browse live entities associated with 65 million articles. In the on-line interface, each query leads to a specific network representation of the most prevailing entities: topics (words), authors, journals and Dewey decimal classes linked to the set of terms in the query. This network represents the context of a query. Each of the network nodes is clickable: by clicking through, a user traverses a large space of articles along dimensions of authors, journals, Dewey classes and words simultaneously. We present different use cases of such an interface. This paper provides a link between the quest for maps of science and on-going debates in HCI about the use of interactive information visualisation to empower users in their search.
description: CHI'15 Extended Abstracts, April 18-23, 2015, Seoul, Republic of Korea. ACM 978-1-4503-3146-3/15/04
Supplementary material - Details on study area, species, methods and additional results from Ocean acidification affects somatic and otolith growth relationship in fish: evidence from an in situ study
Creators: name: Franco, Antonio Di
name: Calò, Antonio
name: Sdiri, Khalil
name: Cattano, Carlo
name: Milazzo, Marco
name: Guidetti, Paolo
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Environmental Science
subject: Ecology
subject: FOS: Biological sciences

description: Ocean acidification (OA) may have varied effects on fish eco-physiological responses. Most OA studies were carried out in laboratory conditions without considering the in situ pCO2/pH variability documented for many marine coastal ecosystems. Using a standard otolith ageing technique, we assessed how in situ ocean acidification (ambient, versus end-of-century CO2 levels) can affect can affect somatic and otolith growth, and their relationship in a coastal fish. Somatic and otolith growth rates of juveniles from a population of the ocellated wrasse Symphodus ocellatus living off a Mediterranean CO2 seep, increased at the high-pCO2 site. Also, we detected that slower growing individuals living at ambient pCO2 levels tend to have larger otoliths at the same somatic length (i.e. higher relative size of otoliths to fish body length) than faster growing conspecifics living under high pCO2 conditions, with this being attributable to the so-called ‘growth effect’. Our findings suggest the possibility of contrasting OA effects on fish fitness, with higher somatic growth rate and possibly higher survival associated to smaller relative size of otoliths that could impair fish auditory and vestibular sensitivity.
Autolocalization in a dipolar exciton system
Creators: name: Andreev, S. V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We develop the autolocalization hypothesis suggested recently in [Andreev, Phys. Rev. Lett. 110, 146401 (2013)] to explain the formation of the macroscopically ordered exciton state (MOES) in semiconductor quantum wells [L. V. Butov et al., Nature (London) 418, 751 (2002)]. We argue that the onset of a periodical localizing potential having a macroscopic spatial period is possible in the systems where in addition to long-range dipolar repulsion the excitons exhibit resonant pairing at short distances. Our theory suggests, that the central incoherent part of each condensate in the MOES may represent a novel quantum molecular phase, which was predicted and discussed theoretically several years ago in the context of resonant Bose superfluids.
description: 5 pages, 2 figures
Supplementary materials from Variability in the durability of CRISPR-Cas immunity.
Creators: name: Héléne Chabas
name: Nicot, Antoine
name: Meaden, Sean
name: Edze Westra
name: Tremblay, Denise
name: Pradier, Léa
name: Lion, Sébastien
name: Moineau, Sylvain
name: Gandon, Sylvain
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Health Care
subject: Diseases
subject: 111706 Epidemiology
subject: FOS: Health sciences

description: The durability of host resistance is challenged by the ability of pathogens to escape the defence of their hosts. Understanding the variability in the durability of host resistance is of paramount importance for designing more effective control strategies against infectious diseases. Here, we study the durability of various clustered regularly interspaced short palindromic repeats-Cas (CRISPR-Cas) alleles of the bacteria Streptococcus thermophilus against lytic phages. We found substantial variability in durability among different resistant bacteria. Since the escape of the phage is driven by a mutation in the phage sequence targeted by CRISPR-Cas, we explored the fitness costs associated with these escape mutations. We found that, on average, escape mutations decrease the fitness of the phage. Yet, the magnitude of this fitness cost does not predict the durability of CRISPR-Cas immunity. We contend that this variability in the durability of resistance may be because of variations in phage mutation rate or in the proportion of lethal mutations across the phage genome. These results have important implications on the coevolutionary dynamics between bacteria and phages and for the optimal deployment of resistance strategies against pathogens and pests. Understanding the durability of CRISPR-Cas immunity may also help develop more effective gene-drive strategies based on CRISPR-Cas9 technology.This article is part of the themed issue ‘The ecology and evolution of prokaryotic CRISPR-Cas adaptive immune systems’.
An Inverse Hedonic Price Analysis of Recreational Equine Market in Korea
Creators: name: Kwon, Ohsang
name: Kwon, Ohsang
Publisher: name: Unknown
Year: 2010
Subjects: subject: Demand and Price Analysis
subject: recreational equine
subject: inverse hedonic price function
subject: valuation

description: An inverse hedonic function, suggested by Nerlove (1995), is estimated with a Korean riding club data set. Implicit prices for riding club's characteristics are derived from the estimated inverse hedonic function. A usual hedonic function for which quantity is assumed to be determined exogenously is also estimated, but is rejected by the inverse hedonic function by a nonnested hypothesis testing. Price elasticity of horse-back riding is estimated to be -0.67. It is shown that the WTP for riding is affected by riding club's location, accommodation, number of horses, trail length, number of instructors, parking lots and opening year.
Grand Altai Research & Education / Наука и образование Большого Алтая,Выпуск 1 (12) 2020
Creators: name: Алтайский государственный технический университет им. И.И. Ползунова
Publisher: name: Алтайский государственный технический университет им. И.И. Ползунова
Year: 2020

description: Grand Altai Research & Education / Наука и образование Большого Алтая,Выпуск 1 (12) 2020
(1495) Harold Nickols
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.
$Ξ(1690)$ as a $\bar{K} Σ$ molecular state
Creators: name: Sekihara, Takayasu
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show that a $Ξ^{\ast}$ pole can be dynamically generated near the $\bar{K} Σ$ threshold as an $s$-wave $\bar{K} Σ$ molecular state in a coupled-channels unitary approach with the leading-order chiral interaction. This $Ξ^{\ast}$ state can be identified with the $Ξ(1690)$ resonance with $J^{P} = 1/2^{-}$. We find that the experimental $\bar{K}^{0} Λ$ and $K^{-} Σ^{+}$ mass spectra are qualitatively reproduced with the $Ξ^{\ast}$ state. Moreover we theoretically investigate properties of the dynamically generated $Ξ^{\ast}$ state.
description: 10 pages, 3 eps files, version accepted for publication in PTEP
Supplementary Tables from Citizen science in Lebanon—a case study for groundwater quality monitoring.
Creators: name: Baalbaki, Rima
name: Ahmad, Serine Haidar
name: Kays, Wassim
name: Talhouk, Salma N.
name: Saliba, Najat A.
name: Al-Hindi, Mahmoud
Publisher: name: The Royal Society
Year: 2019
Subjects: Environmental Chemistry
Environmental Science

description: Sampling dates, Water perception questionnaire results, T-test analysis for the dry/summer and wet/winter campaigns
Deep SDSS optical spectroscopy of distant halo stars II. Iron, calcium, and magnesium abundances
Creators: name: Fernández-Alvar, E.
name: Prieto, C. Allende
name: Schlesinger, K. J.
name: Beers, T. C.
name: Robin, A. C.
name: Schneider, D. P.
name: Lee, Y. S.
name: Bizyaev, D.
name: Ebelke, G.
name: Malanushenko, E.
name: Malanushenko, V.
name: Oravetz, D.
name: Pan, K.
name: Simmons, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyze a sample of 3,944 low-resolution (R ~ 2000) optical spectra from the Sloan Digital Sky Survey (SDSS), focusing on stars with effective temperatures 5800 < Teff < 6300 K, and distances from the Milky Way plane in excess of 5 kpc, and determine their abundances of Fe, Ca, and Mg. We followed the same methodology as in the previous paper in this series, deriving atmospheric parameters by chi2 minimization, but this time we obtained the abundances of individual elements by fitting their associated spectral lines. Distances were calculated from absolute magnitudes obtained by a statistical comparison of our stellar parameters with stellar-evolution models. The observations reveal a decrease in the abundances of iron, calcium, and magnesium at large distances from the Galactic center. The median abundances for the halo stars analyzed are fairly constant up to a Galactocentric distance r ~ 20 kpc, rapidly decrease between r ~ 20 and r ~ 40 kpc, and flatten out to significantly lower values at larger distances, consistent with previous studies. In addition, we examine the [Ca/Fe] and [Mg/Fe] as a function of Fe/H and Galactocentric distance. Our results show that the most distant parts of the halo show a steeper variation of the [Ca/Fe] and [Mg/Fe] with iron. We found that at the range -1.6 < [Fe/H] < -0.4 [Ca/Fe] decreases with distance, in agreement with earlier results based on local stars. However, the opposite trend is apparent for [Mg/Fe]. Our conclusion that the outer regions of the halo are more metal-poor than the inner regions, based on in situ observations of distant stars, agrees with recent results based on inferences from the kinematics of more local stars, and with predictions of recent galaxy formation simulations for galaxies similar to the Milky Way.