cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Asymmetry of the vapor-liquid coexistence curve: the asymptotic behavior of the "diameter"
Creators: name: Sushko, M. Ya.
name: Babiy, O. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We analyze, without resort to any model field-mixing scheme, the leading temperature-dependent term in the "diameter" of the coexistence curve asymptotically close to the vapor-liquid critical point. For this purpose, we use a simple non-parametric equation of state which we develop by meeting several general requirements. Namely, we require that the desired equation (1) lead to correct asymptotic behavior for a limited number of the fluid's parameters along selected thermodynamic paths, (2) reveal a Van der Waals loop below the critical point, and (3) be consistent with a rigorous definition of the isothermal compressibility in the critical region. For the temperature interval in question, the proposed equation approximates experimental data with an accuracy comparable to those given by Schofield's parametric equation and by other authors' equations. The desired term is obtained by applying the Maxwell rule to the equation and can be represented as D_{2 β} | τ|^{2 β}, where | τ| = | T - T_{c} | / T_{c}, and βis the critical exponent for the order parameter. The amplitude D_{2 β} is determined explicitly for the volume-temperature and entropy-temperature planes.
description: 6 pages, 3 figures; reported at PLMMP-2008 Conference; corrected typoes
Photonic measurements of the longitudinal expansion dynamics in Heavy-Ion collisions
Creators: name: Renk, Thorsten
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Due to the smallness of the electromagnetic coupling, photons escape from the hot and dense matter created in an heavy-ion collision at all times, in contrast to hadrons which are predominantly emitted in the final freeze-out phase of the evolving system. Thus, the thermal photon yield carries an imprint from the early evolution. We suggest how this fact can be used to gain information about where between the two limiting cases of Bjorken (boost-invariant expansion) and Landau (complete initial stopping and re-expansion) hydrodynamics the actual evolution can be found. We argue that both the rapidity dependence of the photon yield and photonic HBT radii are capable of answering this question.
description: 10 pages, 3 figures
Impact Evaluation of Food Safety Regulations: A Review of Quantitative Methods
Creators: name: Ragona, Maddalena
name: Mazzocchi, Mario
name: Ragona, Maddalena
name: Mazzocchi, Mario
Publisher: name: Unknown
Year: 2008
Subjects: Agribusiness
Agricultural and Food Policy
Farm Management
Food Consumption/Nutrition/Food Safety
Industrial Organization

description: Recently regulatory evaluation performed by the European Commission has been reviewed in response to the call for more evidence-based policy making and “Better Regulation”, which requires instruments to support the adoption of more effective and efficient regulations, as well as an improved coordination of policy interventions across the economic, social and environmental dimensions (European Commission, 2002). At the same time, there is a demand for clarity in the methods used to evaluate the impacts of regulations. While there is an ongoing debate on the methodological frameworks that are or could be used to assess the overall impact of regulations, our focus here is on the quantitative techniques that measure the economic effects and estimate the monetary values of non-market effects. This is especially relevant in policy areas like that of food safety, where a wide variety of alternative techniques are used to measure the same impact, often with very different or even conflicting results. Food safety regulations generate different effects to different economic actors along the food chain, covering more than a policy area, like health protection, competition, trade and environment. The aim of this study is to review and discuss the quantitative methodologies applied to assess the socio-economic impacts of food safety regulations in a selection of studies found in the literature available to date1. The paper is structured as follows. First, we propose a classification of potential impacts relevant in food safety regulations, based on the European Commission Impact Assessment Guidelines (2005). Then, we associate each impact with the methodologies used in the literature. An overview of the methodologies is presented, highlighting strengths and weaknesses; methodologies not currently used but potentially exploitable in food safety regulatory assessments are briefly described. In the fourth section, we add further information about the evaluation studies, by specifying stage of assessment, level of analysis, type of data required, and geographical scope of analysis. Final considerations conclude the review.
Thermal Modeling of Comet-Like Objects from AKARI Observation
Creators: name: Bach, Yoonsoo P.
name: Ishiguro, Masateru
name: Usui, Fumihiko
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We investigated the physical properties of the comet-like objects 107P/(4015) Wilson--Harrington (4015WH) and P/2006 HR30 (Siding Spring; HR30) by applying a simple thermophysical model (TPM) to the near-infrared spectroscopy and broadband observation data obtained by AKARI satellite of JAXA when they showed no detectable comet-like activity. We selected these two targets since the tendency of thermal inertia to decrease with the size of an asteroid, which has been demonstrated in recent studies, has not been confirmed for comet-like objects. It was found that 4015WH, which was originally discovered as a comet but has not shown comet-like activity since its discovery, has effective size $ D= $ 3.74--4.39 km and geometric albedo $ p_V \approx $ 0.040--0.055 with thermal inertia $ Γ= $ 100--250 J m$ ^{-2} $ K$ ^{-1} $ s$ ^{-1/2}$. The corresponding grain size is estimated to 1--3 mm. We also found that HR30, which was observed as a bare cometary nucleus at the time of our observation, have $ D= $ 23.9--27.1 km and $ p_V= $0.035--0.045 with $ Γ= $ 250--1,000 J m$ ^{-2} $ K$ ^{-1} $ s$ ^{-1/2}$. We conjecture the pole latitude $ - 20^{\circ} \lesssim β_s \lesssim +60^{\circ}$. The results for both targets are consistent with previous studies. Based on the results, we propose that comet-like objects are not clearly distinguishable from asteroidal counterpart on the $ D $--$ Γ$ plane.
description: 14 pages, 6 figures, accepted for publication to AJ
The nonlinear semiclassical dynamics of the unbalanced, open Dicke model
Creators: name: Stitely, Kevin
name: Giraldo, Andrus
name: Krauskopf, Bernd
name: Parkins, Scott
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In recent years there have been significant advances in the study of many-body interactions between atoms and light confined to optical cavities. One model which has received widespread attention of late is the Dicke model, which under certain conditions exhibits a quantum phase transition to a state in which the atoms collectively emit light into the cavity mode, known as superradiance. We consider a generalization of this model that features independently controllable strengths of the co- and counter-rotating terms of the interaction Hamiltonian. We study this system in the semiclassical (mean field) limit, i.e., neglecting the role of quantum fluctuations. Under this approximation, the model is described by a set of nonlinear differential equations, which determine the system's semiclassical evolution. By taking a dynamical systems approach, we perform a comprehensive analysis of these equations to reveal an abundance of novel and complex dynamics. Examples of the novel phenomena that we observe are the emergence of superradiant oscillations arising due to Hopf bifurcations, and the appearance of a pair of chaotic attractors arising from period-doubling cascades, followed by their collision to form a single, larger chaotic attractor via a sequence of infinitely many homoclinic bifurcations. Moreover, we find that a flip of the collective spin can result in the sudden emergence of chaotic dynamics. Overall, we provide a comprehensive roadmap of the possible dynamics that arise in the unbalanced, open Dicke model in the form of a phase diagram in the plane of the two interaction strengths. Hence, we lay out the foundations to make further advances in the study of the fingerprint of semiclassical chaos when considering the master equation of the unbalanced Dicke model, that is, the possibility of studying a manifestation of quantum chaos in a specific, experimentally realizable system.
description: 19 pages, 18 figures, 1 appendix
Hopf hypersurfaces in complex Grassmannians of rank two
Creators: name: Lee, Ruenn-Huah
name: Loo, Tee-How
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: Primary 53C25, 53C15, Secondary 53B20

description: In this paper, we study real hypersurfaces in complex Grassmannians of rank two. First, the nonexistence of mixed foliate real hypersurfaces is proven. With this result, we show that for Hopf hypersurfaces in complex Grassmannians of rank two, the Reeb principal curvature is constant along integral curves of the Reeb vector field. As a result the classification of contact real hypersurfaces is obtained. We also introduce the notion of $q$-umbilical real hypersurfaces in complex Grassmannians of rank two and obtain a classification of such real hypersurfaces.
description: 24 pages
Additional file 2 of The complete mitochondrial genome of the Columbia lance nematode, Hoplolaimus columbus, a major agricultural pathogen in North America
Creators: name: Xinyuan Ma
name: Agudelo, Paula
name: Richards, Vincent P.
name: J. Antonio Baeza
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Figure S1. Secondary structure prediction analysis of non-coding regions in the mitochondrial genome of Hoplolaimus columbus by FORNA.
Phase Transitions and Spatio-Temporal Fluctuations in Stochastic Lattice Lotka-Volterra Models
Creators: name: Mobilia, Mauro
name: Georgiev, Ivan T.
name: Tauber, Uwe C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We study the general properties of stochastic two-species models for predator-prey competition and coexistence with Lotka-Volterra type interactions defined on a $d$-dimensional lattice. Introducing spatial degrees of freedom and allowing for stochastic fluctuations generically invalidates the classical, deterministic mean-field picture. Already within mean-field theory, however, spatial constraints, modeling locally limited resources, lead to the emergence of a continuous active-to-absorbing state phase transition. Field-theoretic arguments, supported by Monte Carlo simulation results, indicate that this transition, which represents an extinction threshold for the predator population, is governed by the directed percolation universality class. In the active state, where predators and prey coexist, the classical center singularities with associated population cycles are replaced by either nodes or foci. In the vicinity of the stable nodes, the system is characterized by essentially stationary localized clusters of predators in a sea of prey. Near the stable foci, however, the stochastic lattice Lotka-Volterra system displays complex, correlated spatio-temporal patterns of competing activity fronts. Correspondingly, the population densities in our numerical simulations turn out to oscillate irregularly in time, with amplitudes that tend to zero in the thermodynamic limit. Yet in finite systems these oscillatory fluctuations are quite persistent, and their features are determined by the intrinsic interaction rates rather than the initial conditions. We emphasize the robustness of this scenario with respect to various model perturbations.
description: 19 pages, 11 figures, 2-column revtex4 format. Minor modifications. Accepted in the Journal of Statistical Physics. Movies corresponding to Figures 2 and 3 are available at http://www.phys.vt.edu/~tauber/PredatorPrey/movies/
Hypergraph Isomorphism for Groups with Restricted Composition Factors
Creators: name: Neuen, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: We consider the isomorphism problem for hypergraphs taking as input two hypergraphs over the same set of vertices $V$ and a permutation group $Γ$ over domain $V$, and asking whether there is a permutation $γ\in Γ$ that proves the two hypergraphs to be isomorphic. We show that for input groups, all of whose composition factors are isomorphic to a subgroup of the symmetric group on $d$ points, this problem can be solved in time $(n+m)^{O((\log d)^{c})}$ for some absolute constant $c$ where $n$ denotes the number of vertices and $m$ the number of hyperedges. In particular, this gives the currently fastest isomorphism test for hypergraphs in general. The previous best algorithm for this problem due to Schweitzer and Wiebking (STOC 2019) runs in time $n^{O(d)}m^{O(1)}$. As an application of this result, we obtain, for example, an algorithm testing isomorphism of graphs excluding $K_{3,h}$ ($h \geq 3$) as a minor in time $n^{O((\log h)^{c})}$. In particular, this gives an isomorphism test for graphs of Euler genus at most $g$ running in time $n^{O((\log g)^{c})}$.
description: 50 pages, 5 figures, full version of a paper accepted at ICALP 2020; second version improves the presentation of the results
$\mathfrak A$-principal Hopf hypersurfaces in complex quadrics
Creators: name: Loo, Tee-How
Publisher: name: arXiv
Year: 2017
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: A real hypersurface in the complex quadric $Q^m=SO_{m+2}/SO_mSO_2$ is said to be $\mathfrak A$-principal if its unit normal vector field is singular of type $\mathfrak A$-principal everywhere. In this paper, we show that a $\mathfrak A$-principal Hopf hypersurface in $Q^m$, $m\geq3$ is an open part of a tube around a totally geodesic $Q^{m+1}$ in $Q^m$. We also show that such real hypersurfaces are the only contact real hypersurfaces in $Q^m$. %, this answers affirmatively a question posted by Berndt (cf. \cite{berndt1})}. The classification for pseudo-Einstein real hypersurfaces in $Q^m$, $m\geq3$, is also obtained.
title: 2014 Faculty Conference: faculty senate overview
Creators: name: Knauss, Daniel M.
Publisher: name: Mountain Scholar
Year: 2007
Subjects: senate
faculty conference
strategic plan
faculty survey

description: This presentation provides an overview of faculty senate objectives, presents an organization chart showing how the senate interacts with other committees, lists the 2014/2015 senators, notes the previous year's activities, and outlines ongoing initiatives and goals.
Additional file 2 of Behavioral barriers to the use of modern methods of contraception among unmarried youth and adolescents in eastern Senegal: a qualitative study
Creators: name: Cohen, Nicki
name: Finou Thérèse Mendy
name: Wesson, Jennifer
name: Protti, Amanda
name: Cissé, Carol
name: Elhadji Babacar Gueye
name: Trupe, Lydia
name: Rosii Floreak
name: Guichon, Dana
name: Lorenzana, Karina
name: Buttenheim, Alison
Publisher: name: figshare
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 2. Blank English interview guides.
Genotype-phenotype correlations in hereditary multiple exostoses in British Columbia
Creators: name: Alvarez, Christine M.
Publisher: name: University of British Columbia
Year: 2009

description: Hereditary Multiple Exostosis is an autosomal dominant condition in which multiple benign cartilage-capped tumours grow in relation to the growth plates of long and flat bones. HME has a wide spectrum of clinical presentations and results in considerable morbidity from lesions due to mass effect causing limb deformity, mal-alignment, and shortening. Mutations in EXT 1 and 2 genes result in multiple exostoses. The presumptive role of the EXT genes is either tumour suppression or growth plate regulation. The purpose of this study was to determine the relationship between the genotype and phenotype in HME. Ten families were identified with HME. Genotyping was completed by linkage analysis of all families and the EXT 1 or 2 gene was sequenced based on these results. Mutation identification and confirmation was performed. Phenotyping consisting of clinical and radiographic examinations generated 89 features for each subject. Thirty-two affected individuals from 10 families participated. Eight of 10 mutations were identified, confirmed and segregation verified. Six of the mutations were unique and 2 previously had been reported in the literature. Three mutations were in EXT 1 and 5 in EXT 2. Two were missense, 3 nonsense, 2 splice site and 1 frameshift. EXT 1 patients were found to have more exostoses, with a higher percentage of flat and pelvic bone involvement. EXT 1 patients had more mal-alignment and were shorter. Males also had a more severe phenotype and modulated the severity of EXT 1 expression. No other genotypic factors were found to influence phenotype. An established genotype phenotype correlation will aid in patient management in terms of surveillance, determining prognosis and mangement. In conclusion a genotype phenotype correlation exists where EXT 1 is linked to a more severe phenotype.
Effective Hamiltonian for Stokes--anti-Stokes pair generation with pump and probe polarized modes
Creators: name: Diaz, R. Acosta
name: Monken, C. H.
name: Jorio, A.
name: Santos, Marcelo F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the correlated Stokes--anti-Stokes scattering (SAS) an incident photon interacts with a Raman-active material, creating a Stokes photon and exciting a quantum vibrational mode in the medium, which is posteriorly annihilated on contact with a second incident photon, producing in turn an anti-Stokes photon. This can be accomplished by real and virtual processes. In real process the quantum mode shared between the Stokes and anti-Stokes events is a real particle, whereas in virtual processes the pair formation is mediated by the exchange of virtual particles. Here, we introduce a Hamiltonian to describe the pair production in SAS scattering, for both types of process, when stimulated by two orthogonally polarized laser pulses in a pump-and-probe configuration. We also model the effect of the natural decay of the vibration created in the Stokes event and compute the probability of producing SAS pairs. Additionally, we follow the dynamics of the vibration by considering the Stokes and anti-Stokes fields as external reservoirs, obtaining thus a master equation for the reduced density matrix for the vibrational population. Finally, we compare our theoretical results with recently published experimental data.
description: 9 pages, 3 figures
The Geometric Albedo of (4179) Toutatis Estimated from KMTNet DEEP-South Observations
Creators: name: Bach, Yoonsoo P.
name: Ishiguro, Masateru
name: Jin, Sunho
name: Yang, Hongu
name: Moon, Hong-Kyu
name: Choi, Young-Jun
name: JeongAhn, Youngmin
name: Kim, Myung-Jin
name: Kwak, SungWon
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We derive the geometric albedo of a near-Earth asteroid, (4179) Toutatis, to investigate its surface physical conditions. The asteroid has been studied rigorously not only via ground-based photometric, spectrometric, polarimetric, and radar observations but also via \textit{in situ} observation by the Chinese Chang'e-2 space probe; however, its geometric albedo is not well understood. We conducted V-band photometric observations when the asteroid was at opposition in April 2018 using the three telescopes in the southern hemisphere that compose the Korea Microlensing Telescope Network (KMTNet). The observed time-variable cross section was corrected using the radar shape model. We find that Toutatis has a geometric albedo $p_\mathrm{V} = 0.185^{+0.045}_{-0.039} $, which is typical of S-type asteroids. We compare the geometric albedo with archival polarimetric data and further find that the polarimetric slope--albedo law provides a reliable estimate for the albedo of this S-type asteroid. The thermal infrared observation also produced similar results if the size of the asteroid is updated to match the results from Chang'e-2. We conjecture that the surface of Toutatis is covered with grains smaller than that of the near-Sun asteroids including (1566) Icarus and (3200) Phaethon.
description: 11 pages, 5 figures, accepted for publication in Journal of the Korean Astronomical Society (JKAS)
On a Diophantine equation that generates all integral Apollonian Gaskets
Creators: name: Kocik, Jerzy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Metric Geometry (math.MG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 52C26, 11Y50, 28A80,

description: A remarkably simple Diophantine quadratic equation is known to generate all Apollonian integral gaskets (disk packings). A new derivation of this formula is presented here based on inversive geometry. Also occurrences of Pythagorean triples in such gaskets is discussed.
description: 18 pages, 14 figures
$\mathfrak D^\perp$-invariant real hypersurfaces in complex Grassmannians of rank two
Creators: name: Lee, Ruenn-Huah
name: Loo, Tee-How
Publisher: name: arXiv
Year: 2017
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: Let $M$ be a real hypersurface in complex Grassmannians of rank two. Denote by $\mathfrak J$ the quaternionic Kähler structure of the ambient space, $TM^\perp$ the normal bundle over $M$ and $\mathfrak D^\perp=\mathfrak JTM^\perp$. The real hypersurface $M$ is said to be $\mathfrak D^\perp$-invariant if $\mathfrak D^\perp$ is invariant under the shape operator of $M$. We showed that if $M$ is $\mathfrak D^\perp$-invariant, then $M$ is Hopf. This improves the results of Berndt and Suh in [{Int. J. Math.} \textbf{23}(2012) 1250103] and [{Monatsh. Math.} \textbf{127}(1999), 1--14]. We also classified $\mathfrak D^\perp$ real hypersurface in complex Grassmannians of rank two with constant principal curvatures.
Neutron Scattering and Magnetic Observables for S = 1/2 Molecular Magnets
Creators: name: Haraldsen, J. T.
name: Barnes, T.
name: Musfeldt, J. L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this paper we report results for magnetic observables of finite spin clusters composed of S=1/2 ions. We consider clusters of two, three and four spins in distinct spatial arrangements, with isotropic Heisenberg interactions of various strengths between ion pairs. In addition to the complete set of energy eigenvalues and eigenvectors, specific heat and magnetic susceptibility, we also quote results for the single crystal and powder average inelastic neutron scattering structure factors. Examples of the application of these results to experimental systems are also discussed.
description: 24 pages (latex), 20 figures
Additional file 3 of Behavioral barriers to the use of modern methods of contraception among unmarried youth and adolescents in eastern Senegal: a qualitative study
Creators: name: Cohen, Nicki
name: Finou Thérèse Mendy
name: Wesson, Jennifer
name: Protti, Amanda
name: Cissé, Carol
name: Elhadji Babacar Gueye
name: Trupe, Lydia
name: Rosii Floreak
name: Guichon, Dana
name: Lorenzana, Karina
name: Buttenheim, Alison
Publisher: name: figshare
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 3. Illustrative behavioral hypotheses.
A regularity criterion for 3D micropolar fluid flows in terms of one partial derivative of the velocity
Creators: name: Gala, S.
name: Ragusa, M. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q35 (primary), 35B65, 76D05 (secondary)

description: In this work, we prove a regularity criterion for micropolar fluid flows in terms of the one partial derivative of the velocity in Morrey-Campanato space.
description: Annales Polonici Mathematici
Compact Group Approach to the Analysis of Dielectric and Optical Characteristics of Finely Dispersed Systems and Liquids
Creators: name: Sushko, M. Ya.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present the compact group approach to analysis of the long-wavelength dielectric and optical characteristics of substances which can be modeled as macroscopically homogeneous and isotropic systems of hard dielectric particles embedded into a dielectric matrix. After the basics of the method are outlined, we discuss the results obtained with it for the effective permittivity of such systems and the single-scattering intensity of light scattered by them.
description: 5 pages, 1 table; reported at Statistical Physics: Modern Trends and Applications, 2009
Harish-Chandra bimodules for type A rational Cherednik algebras
Creators: name: Simental, José
Publisher: name: arXiv
Year: 2019
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We study Harish-Chandra bimodules for the rational Cherednik algebra associated to the symmetric group $S_{n}$. In particular, we show that for any parameter $c \in \mathbb{C}$, the category of Harish-Chandra $H_{c}$-bimodules admits a fully faithful embedding into the category $\mathcal{O}_{c}$, and describe the irreducibles in the image. We also construct a duality on the category of Harish-Chandra bimodules, and in fact we do this in a greater generality of quantizations of Nakajima quiver varieties. We use this duality, along with induction and restriction functors, to describe, as an abelian category, the smallest Serre subcategory of the category of Harish-Chandra bimodules containing the regular bimodule, as well as to explicitly describe the tensor products of its irreducible objects.
description: 31 pages; v2 a section on tensor products added and other minor changes, 33 pages; v3 34 pages, final version
The influence of an applied magnetic field on the self-assembly of magnetic nanogels
Creators: name: Novikau, Ivan S.
name: Sánchez, Pedro A.
name: Kantorovich, Sofia S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Using Langevin dynamics simulations, we investigate the self-assembly of magnetic nanogels in the presence of applied magneticfields of moderate strength. We find that even weak fields lead to drastic changes in the structure factors of both, the embeddedmagnetic nanoparticles and of whole nanogel particles. Nanogels assemble by uniting magnetic particle clusters forming inter-gelbridges. At zero field the average amount of such bridges for a pair of nanogels is close to one, whereas even for weak fields itfastly doubles. Rapid growth of cluster size at low values of the applied field is followed by a broad region of slow increase, causedby the mechanical constraints imposed the polymer matrix. The influence of the latter manifests itself in both, the slow growth ofthe magnetisation curve at intermediate fields and the slow decay of the total Zeeman energy.
description: European/Japanese Molecular Liquids Group - EMLG/JMLG 2019 in Kutna Hora
Hysterisis in Food Safety Investments
Creators: name: Richards, Timothy J.
name: Nganje, William E.
name: Acharya, Ram N.
name: Richards, Timothy J.
name: Nganje, William E.
name: Acharya, Ram N.
Publisher: name: Unknown
Year: 2008
Subjects: Agribusiness
Agricultural and Food Policy
Farm Management
Food Consumption/Nutrition/Food Safety
Industrial Organization

description: Concerns regarding the safety and integrity of the fresh produce supply chain are becoming all too common in the media. In 2006, an outbreak of E. coli O157:H7 from farms in Central California sickened almost two hundred people and lead to the deaths of three. Estimated costs to the industry ranged from $100 per month to $200 million until spinach sales returned to normal. By some accounts, the spinach industry has yet to recover and may not for years to come. The incident, however, has lead to a host of initiatives from industry officials, legislators and fresh produce retailers to ensure the safety of fresh produce. The necessary technology and best practices knowledge exists, yet some growers have not made the investment required to ensure that such outbreaks do not happen again in the future.
A Residual Based A Posteriori Error Estimators for AFC Schemes for Convection-Diffusion Equations
Creators: name: Jha, Abhinav
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N15 (primary) 65N30 (secondary)

description: In this work, we propose a residual-based a posteriori error estimator for algebraic flux-corrected (AFC) schemes for stationary convection-diffusion equations. A global upper bound is derived for the error in the energy norm for a general choice of the limiter, which defines the nonlinear stabilization term. In the diffusion-dominated regime, the estimator has the same convergence properties as the true error. A second approach is discussed, where the upper bound is derived in a posteriori way using the Streamline Upwind Petrov Galerkin (SUPG) estimator proposed in \cite{JN13}. Numerical examples study the effectivity index and the adaptive grid refinement for two limiters in two dimensions.
Local order in aqueous solutions of rare gases and the role of the solute concentration: a computer simulation study with a polarizable potential
Creators: name: Cristofori, Paola
name: Gallo, Paola
name: Rovere, Mauro
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Aqueous solutions of rare gases are studied by computer simulation employing a polarizable potential for both water and solutes. The use of a polarizable potential allows to study the systems from ambient to supercritical conditions for water. In particular the effects of increasing the concentration and the size of the apolar solutes are considered in an extended range of temperatures. By comparing the results at increasing temperature it appears clearly the change of behaviour from the tendency to demix at ambient conditions to a regime of complete solubility in the supercritical region. In this respect the role of the hydrogen bond network of water is evidenced.
description: Accepted for publication in Molecular Physics 2004. 19 pages, 10 figures
Spherically symmetric and static black bounces with multiple horizons, throats, and anti-throats in four dimensions
Creators: name: Rodrigues, Manuel E.
name: Silva, Marcos V. de S.
Publisher: name: arXiv
Year: 2025
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Black bounce spacetimes usually arise from the Simpson-Visser regularization method. This type of metric presents a wormhole throat inside an event horizon. In this paper, we presented new classes of black bounce spacetime solutions, which have multiple horizons, throats, and anti-throats. These solutions are variants of black holes and wormholes, based on modifications of the Schwarzschild and Simpson-Visser metrics. The metric function allows for multiple horizons and throats, and the asymptotic behavior recovers the Schwarzschild solution. The article considers a scalar field coupled to nonlinear electrodynamics, generating solutions with a partially phantom scalar field and a magnetic monopole. The energy conditions can be satisfied or violated depending on the region of spacetime, analyzed through an anisotropic fluid. The regularity of the spacetime is ensured by the analysis of the Kretschmann scalar.
description: 17 pages, 7 figures. Published in CQG
The LP Model to Optimize the Biofuel Supply Chain
Creators: name: Rosa, Franco
name: Rosa, Franco
Publisher: name: Unknown
Year: 2008
Subjects: Agribusiness
Agricultural and Food Policy
Farm Management
Food Consumption/Nutrition/Food Safety
Industrial Organization

description: The heavy dependence of the EU countries from the imported oil, a growing economic vulnerability caused by wider and almost unforeseeable price changes of the crude oil commodity, the global warming are some of the reasons that have induced the policy makers to incentive the production of domestic biofuels derived from agricultural biomasses. This paper analyzes the supply chain model of biofuel production by focussing the economic and environment potential benefits that production and use of these biofuels might have for the primary sector and the society. The suggestions are that biofuels can be a promising renewable sources of energy; the positive perceived advantages are: less dependence on turbulent exporting countries, higher security from diversified domestic sources of energy, some environmental benefits derived from the capture of GHG emission. This paper is structured as follows: paragraphs 1 and 2 describe the scenario and the theoretical background; paragraphs 3 and 4 illustrates the problem specification and the algebraic formulation of the LP model addressed to test the sustainability of the supply chain named Biorefinery under the three assumptions hypothesized at the beginning, paragraph 5 reports some of the experimental results with comments and paragraphs 6 describes the main conclusions. This model of cogeneration is more efficient in terms of energy compared to other biofuel chains, and is more socially acceptable because fuel and food productions are complementary each others. The partial energy balance of the fuel and biogas are positive while the livestock energy balance is heavily energy consuming, the total energy balance is neutral.
Spatially offset black holes in the Horizon-AGN simulation and comparison to observations
Creators: name: Bartlett, Deaglan J.
name: Desmond, Harry
name: Devriendt, Julien
name: Ferreira, Pedro G.
name: Slyz, Adrianne
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the displacements between the centres of galaxies and their supermassive black holes (BHs) in the cosmological hydrodynamical simulation Horizon-AGN, and in a variety of observations from the literature. The BHs in Horizon-AGN feel a sub-grid dynamical friction force, sourced by the surrounding gas, which prevents recoiling BHs being ejected from the galaxy. We find that i) the fraction of spatially offset BHs increases with cosmic time, ii) BHs live on prograde orbits in the plane of the galaxy with an orbital radius that decays with time but stalls near $z=0$, and iii) the magnitudes of offsets from the galaxy centres are substantially larger in the simulation than in observations. We attribute the stalling of the infall and excessive offset magnitudes to the fact that dynamical friction from stars and dark matter is not modelled in the simulation, and hence provide a way to improve the black hole dynamics of future simulations.
description: 19 pages, 15 figures, accepted for publication in MNRAS
O(n) vector model at n=-1, -2 on random planar lattices: a direct combinatorial derivation
Creators: name: Caracciolo, Sergio
name: Sportiello, Andrea
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The O(n) vector model with logarithmic action on a lattice of coordination 3 is related to a gas of self-avoiding loops on the lattice. This formulation allows for analytical continuation in n: critical behaviour is found in the real interval [-2,2]. The solution of the model on random planar lattices, recovered by random matrices, also involves an analytic continuation in the number n of auxiliary matrices. Here we show that, in the two cases n=-1, -2, a combinatorial reformulation of the loop gas problem allows to achieve the random matrix solution with no need of this analytical continuation.
description: 4 pages, 2 figures
Maplets: An Efficient Approach for Cooperative SLAM Map Building Under Communication and Computation Constraints
Creators: name: Brink, Kevin M.
name: Zhang, Jincheng
name: Willis, Andrew R.
name: Sherrill, Ryan E.
name: Godwin, Jamie L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This article introduces an approach to facilitate cooperative exploration and mapping of large-scale, near-ground, underground, or indoor spaces via a novel integration framework for locally-dense agent map data. The effort targets limited Size, Weight, and Power (SWaP) agents with an emphasis on limiting required communications and redundant processing. The approach uses a unique organization of batch optimization engines to enable a highly efficient two-tier optimization structure. Tier I consist of agents that create and potentially share local maplets (local maps, limited in size) which are generated using Simultaneous Localization and Mapping (SLAM) map-building software and then marginalized to a more compact parameterization. Maplets are generated in an overlapping manner and used to estimate the transform and uncertainty between those overlapping maplets, providing accurate and compact odometry or delta-pose representation between maplet's local frames. The delta poses can be shared between agents, and in cases where maplets have salient features (for loop closures), the compact representation of the maplet can also be shared.
 The second optimization tier consists of a global optimizer that seeks to optimize those maplet-to-maplet transformations, including any loop closures identified. This can provide an accurate global "skeleton"' of the traversed space without operating on the high-density point cloud. This compact version of the map data allows for scalable, cooperative exploration with limited communication requirements where most of the individual maplets, or low fidelity renderings, are only shared if desired.
Re-inventing rural territories : a small-town response near Bordeaux
Creators: name: Cloup, Catherine
Publisher: name: University of British Columbia
Year: 2009

description: In France and Northern Europe, the traditional countryside landscapes are now subject to the pressures of a population perpetually on the move. In addition, the development of the tourist economy is geared towards an exploitation of the countryside as a commodity. Both alter landscape independently of the intentions of its producers. The city repels as much as it attracts and most of the growth is now taking place on the city's outskirts placing new demands on rural landscapes encompassing aesthetic, symbolic and recreational services. The rural world is undergoing profound changes in its significance to both the urban dwellers (for whom the countryside is an antidote to the city) and the rural inhabitants (who see it as a resource of agricultural landscapes, there to be contemplated and enjoyed rather than worked). This is demanding a shift in landscape production modes. The approaches developed by landscape architects demonstrate a capacity to renew the forms of rural life recognizing the visible countryside and acting on it when the shift takes place from a rural countryside managed by and for agriculture to an urban countryside to be used by city dwellers. A number of issues are raised by the capacity of the design process to overcome the inertia inherent to the representations of the rural culture - while renewing with the historical continuity of the place and making it possible for locals to re-appropriate the territory together. The response is in the site, regarded as the departure point in itself rather than the landing place for the project. It is in the process of unearthing, interpreting the phenomenal specificity of the site with an inventive attention to its past that allows us to reinvent desirable futures. These attitudes and processes are applied to a site in the Bordeaux region, southwest of France where rural villages are under assault from the expanding city. The site comprises two villages, Le Tourne and Langoiran, both on the right bank of the Garonne River some 25 km upstream from Bordeaux. Separated/connected by a stream, I'Estey, the two villages share similar positions regarding development risks and opportunities. The dynamics of the site's underlying layers, as well as its phenomenal and its formal/visual qualities are explored. The project for a better, more sustainable place is derived which proposes a new reading of the place for visitors and inhabitants, encouraging them to participate in its renewal.
Are gauge shocks really shocks?
Creators: name: Alcubierre, Miguel
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The existence of gauge pathologies associated with the Bona-Masso family of generalized harmonic slicing conditions is proven for the case of simple 1+1 relativity. It is shown that these gauge pathologies are true shocks in the sense that the characteristic lines associated with the propagation of the gauge cross, which implies that the name ``gauge shock'' usually given to such pathologies is indeed correct. These gauge shocks are associated with places where the spatial hypersurfaces that determine the foliation of spacetime become non-smooth.
description: 7 pages, 5 figures, REVTEX 4. Revised version, including corrections suggested by referees
Radio-Frequency Transitions on Weakly-Bound Ultracold Molecules
Creators: name: Chin, Cheng
name: Julienne, Paul S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We show that radio-frequency spectroscopy on weakly-bound molecules is a powerful and sensitive tool to probe molecular energy structure as well as atomic scattering properties. An analytic expression of the rf excitation lineshape is derived, which in general contains a bound-free component and a bound-bound component. In particular, we show that the bound-free process strongly depends on the sign of the scattering length in the outgoing channel and acquires a Fano-type profile near a Feshbach resonance. The derived lineshapes provide an excellent fit to both the numerical calculation and the experimental measurements.
Multi-Granularity Canonical Appearance Pooling for Remote Sensing Scene Classification
Creators: name: Wang, S.
name: Guan, Y.
name: Shao, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Recognising remote sensing scene images remains challenging due to large visual-semantic discrepancies. These mainly arise due to the lack of detailed annotations that can be employed to align pixel-level representations with high-level semantic labels. As the tagging process is labour-intensive and subjective, we hereby propose a novel Multi-Granularity Canonical Appearance Pooling (MG-CAP) to automatically capture the latent ontological structure of remote sensing datasets. We design a granular framework that allows progressively cropping the input image to learn multi-grained features. For each specific granularity, we discover the canonical appearance from a set of pre-defined transformations and learn the corresponding CNN features through a maxout-based Siamese style architecture. Then, we replace the standard CNN features with Gaussian covariance matrices and adopt the proper matrix normalisations for improving the discriminative power of features. Besides, we provide a stable solution for training the eigenvalue-decomposition function (EIG) in a GPU and demonstrate the corresponding back-propagation using matrix calculus. Extensive experiments have shown that our framework can achieve promising results in public remote sensing scene datasets.
description: This paper is going to be published by IEEE Transactions on Image Processing
Additional file 1 of The complete mitochondrial genome of the Columbia lance nematode, Hoplolaimus columbus, a major agricultural pathogen in North America
Creators: name: Xinyuan Ma
name: Agudelo, Paula
name: Richards, Vincent P.
name: J. Antonio Baeza
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Model selection for phylogenetic analysis by smart model selection (SMS). Table S2. Microsatellite repeats in intergenic spaces. Table S3. Microsatellite repeats in non-coding regions. Table S4. Tandem repeats in non-coding regions.
Adaptive Grids in the Context of Algebraic Stabilizations for Convection-Diffusion-Reaction Equations
Creators: name: Jha, Abhinav
name: John, Volker
name: Knobloch, Petr
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N12, 65N30

description: Three algebraically stabilized finite element schemes for discretizing convection-diffusion-reaction equations are studied on adaptively refined grids. These schemes are the algebraic flux correction (AFC) scheme with Kuzmin limiter, the AFC scheme with BJK limiter, and the recently proposed Monotone Upwind-type Algebraically Stabilized (MUAS) method. Both, conforming closure of the refined grids and grids with hanging vertices are considered. A non-standard algorithmic step becomes necessary before these schemes can be applied on grids with hanging vertices. The assessment of the schemes is performed with respect to the satisfaction of the global discrete maximum principle (DMP), the accuracy, e.g., smearing of layers, and the efficiency in solving the corresponding nonlinear problems.
Additional file 1 of Behavioral barriers to the use of modern methods of contraception among unmarried youth and adolescents in eastern Senegal: a qualitative study
Creators: name: Cohen, Nicki
name: Finou Thérèse Mendy
name: Wesson, Jennifer
name: Protti, Amanda
name: Cissé, Carol
name: Elhadji Babacar Gueye
name: Trupe, Lydia
name: Rosii Floreak
name: Guichon, Dana
name: Lorenzana, Karina
name: Buttenheim, Alison
Publisher: name: figshare
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 1. Completed COREQ checklist.