cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anti-de Sitter black holes, perfect fluids, and holography
Creators: name: Das, Saurya
name: Husain, Viqar
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider asymptotically anti-de Sitter black holes in $d$-spacetime dimensions in the thermodynamically stable regime. We show that the Bekenstein-Hawking entropy and its leading order corrections due to thermal fluctuations can be reproduced by a weakly interacting fluid of bosons and fermions (`dual gas') in $Δ=α(d-2)+1$ spacetime dimensions, where the energy-momentum dispersion relation for the constituents of the fluid is assumed to be $ε= κp^α$. We examine implications of this result for entropy bounds and the holographic hypothesis.
description: Minor changes to match published version. 9 Pages, Revtex
LAND PRICES, CAPITAL GAINS AND THE RETURNS TO FARMLAND OWNERSHIP
Creators: name: Bergland, Olvar
name: Randall, Alan
name: Bergland, Olvar
name: Randall, Alan
Publisher: name: Unknown
Year: 1984
Subjects: Demand and Price Analysis
Farm Management
Land Economics/Use

description: The determination of farmland prices and the possibility of abovenormal returns to land ovnership, one-shot capital gains (losses) and continuing capital gains (losses) are examined using models based on asset pricing theory. These models appear to explain the rising farmland prices of the pre-1979 periods and their subsequent fall.
Formation of Ejecta and Dust Pond Deposits on Asteroid Vesta
Creators: name: Parekh, Rutu
name: Otto, K. A.
name: Matz, K. D.
name: Jaumann, Ralf
name: Krohn, K.
name: Roatsch, T.
name: Kersten, E.
name: Elgner, S.
name: Russell, C. T.
name: Raymond, C. A.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: ponds
subject: Vesta
subject: volatiles
subject: ejecta melt
subject: dust
subject: fine-grained
subject: 500 Naturwissenschaften und Mathematik::520 Astronomie::520 Astronomie und zugeordnete Wissenschaften

description: Dust and melt ponds have been studied on planetary bodies including Eros, Itokawa, and the Moon. However, depending on the nature of the regolith material properties and the location of the planetary body, the formation mechanism of the ponded features varies. On Eros and Itokawa, ponded features are formed from dry regolith materials whereas on the Moon similar features are thought to be produced by ejecta melt. On the surface of Vesta, we have identified type 1, ejecta ponds, and type 2, dust ponds. On Vesta type 1 pond are located in the vicinity of ejecta melt of large impact craters. The material is uniformly distributed across the crater floor producing smooth pond surfaces which have a constant slope and shallow depth. The hosting crater of melt-like ponds has a low raised rim and is located on relatively low elevated regions. Whereas, the type 2 ponds on Vesta reveal an undulating surface that is frequently displaced from the crater center or extends toward the crater wall with an abruptly changing slope. We suggested that for the production of the type 2 ponds, localized seismic diffusion and volatile-induced fluidization may be responsible for Vesta. Due to Vesta's large size (in comparison to Eros and Itokawa), the surface may have experienced local-scale rare high-amplitude seismic diffusion which was sufficient to drift fine material. Similarly, short-lived volatile activities were capable to transfer dusty material on to the surface. Segregation and smoothing of transferred material lack further surface activities, hindering the formation of smooth morphology.
Renormalization group approaches to Quantum Gravity and Tensions in Modern Cosmology
Creators: name: Zarikas, Vasilios
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 85-10

description: Asymptotic Safety is a promising framework towards the understanding, in a non-perturbative way, of Quantum Gravity. It treats the Newton's constant G_N and the cosmological constant Λas running coupling of an effective action. At the phenomenological point of view the values of G_N and Λdepend on the energy density of the system under consideration. This fact has interesting astrophysical and cosmological consequences. The present work discusses the effects on the distance measurements from SNIa light curves and on the strong and weak gravitational lensing measurements.
Logarithmic Surfaces and Hyperbolicity
Creators: name: Dethloff, Gerd
name: Lu, Steven
Publisher: name: arXiv
Year: 2004
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 14J29, 32Q45 (Primary) 14K20, 14E05 (Secondary)

description: In 1981 J.Noguchi proved that in a logarithmic algebraic manifold, having logarithmic irregularity strictly bigger than its dimension, any entire curve is algebraically degenerate. In the present paper we are interested in the case of manifolds having logarithmic irregularity equal to its dimension. We restrict our attention to Brody curves, for which we resolve the problem completely in dimension 2: Theorem: In a logarithmic surface with logarithmic irregularity 2 and logarithmic Kodaira dimension 2, any Brody curve is algebraically degenerate. We also deal with the case of arbitrary logarithmic Kodaira dimension. As a corollary, we get hyperbolicity for such logarithmic surfaces not containing non-hyperbolic algebraic curves and having hyperbolically stratified boundary divisors. In particular we get the "best possible" result on algebraic degeneracy of Brody curves in the complex plane minus a curve consisting of three components, thus improving results of Dethloff-Schumacher-Wong from 1995.
description: 34 pages. Final version, to appear in Annales Fourier
Detection of Islands and Droplets on Smectic Films Using Machine Learning
Creators: name: Hedlund, Eric
name: Hedlund, Keith
name: Green, Adam
name: Chowdhury, Ravin
name: Park, Cheol S.
name: Maclennan, Joseph E.
name: Clark, Noel A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Machine learning techniques have been developed to identify inclusions on the surface of freely suspended smectic liquid crystal films imaged by reflected light microscopy. The experimental images are preprocessed using Canny edge detection and then passed to a radial kernel support vector machine (SVM) trained to recognize circular islands and droplets. The SVM is able to identify these objects of interest with an accuracy that far exceeds that of conventional tracking software, especially when the background image is non-uniform or when the target features are in close proximity to one another. This method could be applied to tracking objects in a variety of visually inhomogeneous biological and soft matter environments, in order to study growth dynamics, the development of spatial order, and hydrodynamic behavio
description: 13 pages,1 figures, 1 table
Adsorption Transition of a Polyelectrolyte on a High-dielectric Charged Substrate
Creators: name: Cheng, Chi-Ho
name: Lai, Pik-Yin
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The behavior of a polyelectrolyte adsorbed on a charged surface of high-dielectric constant is studied by both Monte-Carlo simulation and analytical methods. It is found that in a low ionic strength medium, the transition is first-order with the repulsive charged surface. The order parameter which characterize the polyelectrolyte adsorption, the surface monomer density, follows a linear relation with surface charge density. It indicates the polyelectrolyte is always compressed on the substrate. No conformation change exists before the de-sorption. Finally, a new scaling law for the layer thickness is derived and verified by the simulation data.
description: 4 pages, 2 figures
Leptostylopsis jamaicensis
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Leptostylopsis
Leptostylopsis jamaicensis

description: 12. Leptostylopsis jamaicensis (Gahan, 1895)
Type locality — Jamaica. (BMNH). Distribution — Jamaica.
 Leptostylus jamaicensis Gahan, 1895: 133; Leng & Mutchler, 1914: 450 (distr.); Gowdey, 1926: 22 (distr.); Duffy, 1953: 275.
 Leptostylopsis jamaicensis; Gilmour, 1963a: 58; Chemsak et al., 1992: 139 (cat.).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
'Co' na świecie, 'Covid' w Europie i Ameryce?
Creators: name: Rafał Pązik
Publisher: name: Zenodo
Year: 2021
Subjects: Covid-19, pandemia, SARS-cov2, world, statistics

description: Rev_3 Covid-19 na "świecie". Zestawienie różnych statystyk z wykresami i tabelami- aktualizaja na 29 Kwiecień 2021 Korekta NOP'ów i brak tabeli w poprzedniej wersji.
On the consistency of a non-Hermitian Yukawa interaction
Creators: name: Alexandre, Jean
name: Mavromatos, Nick E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study different properties of an anti-Hermitian Yukawa interaction, motivated by a scenario of radiative anomalous generation of masses for the right-handed sterile neutrinos. The model, involving either a pseudo-scalar or a scalar, is consistent both at the classical and quantum levels, and particular attention is given to its properties under improper Lorentz transformations. The path integral is consistently defined with a Euclidean signature, and we discuss the energetics of the model, which show that no dynamical mass generation can occur, unless extra interactions are considered.
description: 7 pages, comments added
Leptostylopsis martinicensis Villiers 1980
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Leptostylopsis
Leptostylopsis martinicensis

description: 15. Leptostylopsis martinicensis Villiers, 1980
Type locality — Martinique, Fort­de­France. (MNHN). Distribution — Martinique, Santa Lucia.
 Leptostylopsis martinicensis Villiers, 1980a: 91, fig. 6; 1980c: 569, fig. 93; Chalumeau, 1983: 226; Chemsak et al., 1992: 139 (cat.).
 Leptostylus martinicensis var. luciae Chalumeau, 1983: 227.
Type locality — Santa Lucia, Barre­Denis. (IREC).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
A MATHEMATICAL PROGRAMMING DECISION MODEL FOR FARM MACHINERY REPLACEMENT: A CONCEPTUAL SPECIFICATION
Creators: name: Braford, Garnett L.
name: Reid, Donald W.
name: Braford, Garnett L.
name: Reid, Donald W.
Publisher: name: Unknown
Year: 1984
Subjects: Farm Management
Research and Development/Tech Change/Emerging Technologies

description: A multi-year integer programming model which accomodates production and investment decisions is specified. The model is shown to be a theoretically appropriate one by exploiting the dual model and demonstrating its relationship to a net future value criterion. Theoretical results from the dual model also address weaknesses in directly applying the net present value criterion of replacement.
Functional diversity of Himalayan bat communities declines at high elevation without the loss of phylogenetic diversity
Creators: name: Chakravarty, Rohit
name: Mohan, Ram
name: Voigt, Christian C.
name: Krishnan, Anand
name: Radchuk, Viktoriia
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Biodiversity
subject: Biogeography
subject: Community ecology
subject: Ecology
subject: FOS: Biological sciences
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Species richness exhibits well-known patterns across elevational gradients in various taxa, but represents only one aspect of quantifying biodiversity patterns. Functional and phylogenetic diversity have received much less attention, particularly for vertebrate taxa. There is still a limited understanding of how functional, phylogenetic and taxonomic diversity change in concert across large gradients of elevation. Here, we focused on the Himalaya—representing the largest elevational gradients in the world—to investigate the patterns of taxonomic, functional and phylogenetic diversity in a bat assemblage. Combining field data on species occurrence, relative abundance, and functional traits with measures of phylogenetic diversity, we found that bat species richness and functional diversity declined at high elevation but phylogenetic diversity remained unchanged. At the lowest elevation, we observed low functional dispersion despite high species and functional richness, suggesting a niche packing mechanism. The decline in functional richness, dispersion, and divergence at the highest elevation is consistent with patterns observed due to environmental filtering. These patterns are driven by the absence of rhinolophid bats, four congeners with extreme trait values. Our data, some of the first on mammals from the Himalayan region, suggest that in bat assemblages with relatively high species diversity, phylogenetic diversity may not be a substitute to measure functional diversity.
Improvement in Land Cover and Crop Classification based on Temporal Features Learning from Sentinel-2 Data Using Recurrent-Convolutional Neural Network (R-CNN)
Creators: name: Mazzia, Vittorio
name: Khaliq, Aleem
name: Chiaberge, Marcello
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: The increasing spatial and temporal resolution of globally available satellite images, such as provided by Sentinel-2, creates new possibilities for researchers to use freely available multi-spectral optical images, with decametric spatial resolution and more frequent revisits for remote sensing applications such as land cover and crop classification (LC&CC), agricultural monitoring and management, environment monitoring. Existing solutions dedicated to cropland mapping can be categorized based on per-pixel based and object-based. However, it is still challenging when more classes of agricultural crops are considered at a massive scale. In this paper, a novel and optimal deep learning model for pixel-based LC&CC is developed and implemented based on Recurrent Neural Networks (RNN) in combination with Convolutional Neural Networks (CNN) using multi-temporal sentinel-2 imagery of central north part of Italy, which has diverse agricultural system dominated by economic crop types. The proposed methodology is capable of automated feature extraction by learning time correlation of multiple images, which reduces manual feature engineering and modeling crop phenological stages. Fifteen classes, including major agricultural crops, were considered in this study. We also tested other widely used traditional machine learning algorithms for comparison such as support vector machine SVM, random forest (RF), Kernal SVM, and gradient boosting machine, also called XGBoost. The overall accuracy achieved by our proposed Pixel R-CNN was 96.5%, which showed considerable improvements in comparison with existing mainstream methods. This study showed that Pixel R-CNN based model offers a highly accurate way to assess and employ time-series data for multi-temporal classification tasks.
X-ray source populations in the Galactic Plane
Creators: name: Hands, A. D. P.
name: Warwick, R. S.
name: Watson, M. G.
name: Helfand, D. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first results from the \xmm Galactic Plane Survey (XGPS). In the first phase of the programme, 22 pointings were used to cover a region of approximately three square degrees between 19°-- 22°in Galactic longitude and $\pm$0.6°in latitude. In total we have resolved over 400 point X-ray sources, at $\geq 5 σ$ significance, down to a flux limit of $\sim2 \times 10^{-14}$ \ergseccm (2--10 keV). The combination of the XGPS measurements in the hard X-ray band with the results from earlier surveys carried out by \asca and \chan reveals the form of the low-latitude X-ray source counts over 4 decades of flux. It appears that extragalactic sources dominate below $\sim10^{-13}$ \ergseccm (2--10 keV), with a predominantly Galactic source population present above this flux threshold. The nature of the faint Galactic population observed by \xmm remains uncertain, although cataclysmic variables and RS CVn systems may contribute substantially. \xmm observes an enhanced surface brightness in the Galactic plane in the 2--6 keV band associated with Galactic Ridge X-ray Emission (GRXE). The integrated contribution of Galactic sources plus the breakthrough of extragalactic signal accounts for up to 20 per cent of the observed surface brightness. The XGPS results are consistent with the picture suggested from a deep \chan observation in the Galactic plane, namely that the bulk of the GRXE is truly diffuse.
description: 21 pages, 15 figures, accepted by MNRAS
GPD Physics With Polarized Muon Beams at COMPASS-II
Creators: name: Ferrero, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A major part of the future COMPASS program is dedicated to the investigation of the nucleon structure through Deeply Virtual Compton Scattering (DVCS) and Deeply Virtual Meson Production (DVMP). COMPASS will measure DVCS and DVMP reactions with a high intensity muon beam of 160 GeV and a 2.5 m-long liquid hydrogen target surrounded by a new TOF system. The availability of muon beams with high energy and opposite charge and polarization will allow to access the Compton form factor related to the dominant GPD $H$ and to study the $x_{B}$-dependence of the $t$-slope of the pure DVCS cross section and to study nucleon tomography. Projections on the achievable accuracies and preliminary results of pilot measurements will be presented.
description: Conference proceeding
Soft triaxial roto-vibrational motion in the vicinity of $γ=π/6$
Creators: name: Fortunato, Lorenzo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A solution of the Bohr collective hamiltonian for the $β-$soft, $γ-$soft triaxial rotor with $γ\sim π/6$ is presented making use of a harmonic potential in $γ$ and Coulomb-like and Kratzer-like potentials in $β$. It is shown that, while the $γ-$angular part in the present case gives rise to a straightforward extension of the rigid triaxial rotor energy in which an additive harmonic term appears, the inclusion of the $β$ part results instead in a non-trivial expression for the spectrum. The negative anharmonicities of the energy levels with respect to a simple rigid model are in qualitative agreement with general trends in the experimental data.
description: 4 pages, 2 figures, accepted in Phys.Rev.C
title: Monoclonal Antibodies Against Toxic Shock Syndrome Toxin-1 And Their Use In Diagnosis
Creators: name: Elvin, Stephen John
Publisher: name: The Open University
Year: 1998

description: Toxic shock syndrome toxin -1 (TSST-1) is a 22kDa extracellular protein produced by some strains of Staphylococcus aureus. It is implicated in the pathogenesis of toxic shock syndrome, an acute life-threatening multisystem disease.

 Eight hybridoma cell lines producing monoclonal antibodies with high binding affinity to TSST-1 have been produced and a monoclonal antibody based enzyme-linked immunosorbant assay developed. This assay is specific for TSST-1 and no cross reaction with a number of other bacterial toxins has been observed. The ELISA has been amplified enzymically using biotinylated tyramine and streptavidin peroxidase to detect as little as 0.1ng ml-1 of toxin.

 Competitive binding studies have indicated the presence of at least three antigenic sites on the toxin. The ability of these antibodies to inhibit the mitogenic activity of the toxin in T-cell proliferation assays using mouse and human lymphocytes has been assessed and results of this work indicate that one of the major antigenic sites has an important role in the mitogenicity of the toxin. Binding of the antibodies has been localised to the carboxyl terminal region which has been implicated in the biological activity of the toxin and several antigenic determinants were identified in this region by epitope mapping using polyclonal antibody.
Leptostylopsis milleri
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Leptostylopsis
Leptostylopsis milleri

description: 16. Leptostylopsis milleri (Fisher, 1932)
Type locality — Dominican Republic, Rio San Juan. (USNM). Distribution — Dominican Republic.
 Leptostylus milleri Fisher, 1932: 83.
 Leptostylopsis milleri; Gilmour, 1963a: 59; Chemsak et al., 1992: 139 (cat.).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
A new mechanism for generating density perturbations from inflation
Creators: name: Dvali, Gia
name: Gruzinov, Andrei
name: Zaldarriaga, Matias
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a new mechanism to generate density perturbations in inflationary models. Spatial fluctuations in the decay rate of the inflaton field to ordinary matter lead to fluctuations in the reheating temperature. We argue that in most realistic models of inflation the coupling of the inflaton to normal matter is determined by the vacuum expectation values of fields in the theory. If those fields are light during inflation (this is a generic situation in the minimal models of supersymmetric inflation) they will fluctuate leading to density perturbations through the proposed mechanism. We show that these fluctuations could easily dominate over the ones generated through the standard mechanism. The new scenario has several consequences for inflation model building and observations. The proposed mechanism allows to generate the observed level of density perturbations with a much lower scale of inflation and thus generically predicts a smaller level of gravitational waves. The relation between the slope of the spectrum of the produced density perturbations and the potential of the inflaton field is different from the standard relations obtained in the context of slow roll inflation. Because the field responsible for the fluctuations is not the inflaton, it can have significantly larger self couplings and thus density perturbations could be non-Gaussian. The non-Gaussianity can be large enough to be detectable by CMB and Large Scale Structure observations.
description: 12 pages, 1 figure
RLM: fast and simplified extraction of read-level methylation metrics from bisulfite sequencing data
Creators: name: Hetzel, Sara
name: Giesselmann, Pay
name: Reinert, Knut
name: Meissner, Alexander
name: Kretzmer, Helene
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: bisulfite sequencing data
subject: methylation metrics
subject: methylation statistics
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Bisulfite sequencing data provide value beyond the straightforward methylation assessment by analyzing single-read patterns. Over the past years, various metrics have been established to explore this layer of information. However, limited compatibility with alignment tools, reference genomes or the measurements they provide present a bottleneck for most groups to routinely perform read-level analysis. To address this, we developed RLM, a fast and scalable tool for the computation of several frequently used read-level methylation statistics. RLM supports standard alignment tools, works independently of the reference genome and handles most sequencing experiment designs. RLM can process large input files with a billion reads in just a few hours on common workstations.
Master equations governing the coupling between spin-currents and gravity
Creators: name: de Camargo, A.
name: Sobreiro, R. F.
name: Otoya, V. J. Vasquez
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we consider the Einstein-Hilbert action in the first order order formalism coupled to Dirac spinors. From the little group symmetry, we derive the corresponding Bargmann-Wigner current which is conserved but not gauge invariant. Therefore, we construct a gauge invariant version of the Bargmann-Wigner current which is not conserved but potentially observable. Because it is not conserved we split this current into fermionic and gravitational sectors and derive their broken continuity equations for each sector. These equations compose the master equations governing the interaction of spin-currents with gravity. Furthermore, we derive the corresponding master equations in the weak field approximation.
description: 7 pages, no figures
Leptostylopsis smithi
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Leptostylopsis
Leptostylopsis smithi

description: 21. Leptostylopsis smithi (Gahan, 1895)
Type locality — Grenada, Grenach (Mount Gay Est.). (BMNH). Distribution — Grenada, Mustique, St. Vicent, Becquia.
 Leptostylus smithi Gahan, 1895: 132, pl. 2, fig. 7; Leng & Mutchler, 1914: 450 (distr.).
 Leptostylopsis smithi; Gilmour, 1963a: 59; Villiers, 1980a: 92; Chalumeau, 1983: 226 (hosts); Chemsak etal., 1992: 139 (cat.); Monné, 2001b: 17 (cat. hosts).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Soliton ratchets out of point-like inhomogeneities
Creators: name: Morales-Molina, Luis
name: Mertens, Franz G.
name: Sanchez, Angel
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We introduce and study a novel design for a ratchet potential for soliton excitations. The potential is implemented by means of an array of point-like (delta) inhomogeneities in an otherwise homogeneous potential. We develop a collective coordinate theory that predicts that the effective potential acting on the soliton is periodic but asymmetric and gives rise to the ratchet effect. Numerical simulations fully confirm this prediction; quantitative agreement is reached by an improved version of the theory. Although we specifically show that it is most interesting for building Josephson junction ratchets capable to rectify time-symmetric ac forces, the proposed mechanism is very general and can appear in many contexts, including biological systems.
description: Contains a simpler collective coordinate theory leading to better agreement with the simulations
Higher-order topological superconductivity from repulsive interactions in kagome and honeycomb systems
Creators: name: Li, Tommy
name: Geier, Max
name: Ingham, Julian
name: Scammell, Harley D.
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: higher order topology
subject: topological materials
subject: unconventional superconductivity
subject: topological superconductivity
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: We discuss a pairing mechanism in interacting two-dimensional multipartite lattices that intrinsically leads to a second order topological superconducting state with a spatially modulated gap. When the chemical potential is close to Dirac points, oppositely moving electrons on the Fermi surface undergo an interference phenomenon in which the Berry phase converts a repulsive electron–electron interaction into an effective attraction. The topology of the superconducting phase manifests as gapped edge modes in the quasiparticle spectrum and Majorana Kramers pairs at the corners. We present symmetry arguments which constrain the possible form of the electron–electron interactions in these systems and classify the possible superconducting phases which result. Exact diagonalization of the Bogoliubov-de Gennes Hamiltonian confirms the existence of gapped edge states and Majorana corner states, which strongly depend on the spatial structure of the gap. Possible applications to vanadium-based superconducting kagome metals AV3Sb5 (A = K, Rb, Cs) are discussed.
Forma mentis networks reconstruct how Italian high schoolers and international STEM experts perceive teachers, students, scientists, and school
Creators: name: Stella, Massimo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: This study investigates how students and researchers shape their knowledge and perception of educational topics. The mindset or forma mentis of 159 Italian high school students and of 59 international researchers in STEM are reconstructed through forma mentis networks, i.e., cognitive networks of concepts connected by free associations and enriched with sentiment labels. The layout of conceptual associations between positively/negatively/neutrally perceived concepts is informative on how people build their own mental constructs or beliefs about specific topics. Researchers displayed mixed positive/neutral mental representations of ``teacher'', ``student'' and, ``scientist''. Students' conceptual associations of ``scientist'' were highly positive and largely non-stereotypical, although links about the ``mad scientist'' stereotype persisted. Students perceived ``teacher'' as a complex figure, associated with positive aspects like mentoring/knowledge transmission but also to negative sides revolving around testing and grading. ``School'' elicited stronger differences between the two groups. In the students' mindset, ``school'' was surrounded by a negative emotional aura or set of associations, indicating an anxious perception of the school setting, mixing scholastic concepts, anxiety-eliciting words, STEM disciplines like maths and physics, and exam-related notions. Researchers' positive stance of ``school'' included concepts of fun, friendship, and personal growth instead. Along the perspective of Education Research, the above results are discussed as quantitative evidence for test- and STEM anxiety co-occurring in the way Italian students perceive education places and their actors. Detecting these patterns in student populations through forma mentis networks offers new, simple to gather yet detailed knowledge for future data-informed intervention policies and action research.
description: 12 Pages, 5 Figures
Hybrid Planning in Self-adaptive Systems
Creators: name: Pandey, Ashutosh
Publisher: name: Carnegie Mellon University
Year: 2020
Subjects: subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: Planning is one of the fundamental design considerations when building a self adaptive software system. Planning helps the adaptive system to determine an appropriate course of action at run time that seeks to change the system’s behavior in response to faults, changing environments and security threats. Therefore, having an appropriate planner to ﬁnd a plan is critical to a successful self-adaptation. For many adaptive systems, an appropriate planner is the one that not only ﬁnds a plan quickly, particularly, in urgent circumstances but also the plan provides a near-optimal long-term performance. However, due to the fundamental trade-off between quality and timeliness of planning,today designers often have to compromise between an approach that ﬁnds a plan quickly and an approach that is slow but ﬁnds a higher-quality plan. To deal with this trade-off, this thesis proposes a hybrid planning approach for self-adaptive systems that combines off-the-shelf deliberative and reactive planners to ﬁndabalancebetweenqualityandtimeliness. The key ideas to use reactive planning to provide a quick (although potentially a sub-optimal) response, but simultaneously invoke deliberative planning to determine quality plans. Once the deliberative plan is ready, it takes over the execution from the reactive plan to provide a higher quality adaptation thereafter. Such a combination of planners can, in principle, reap the beneﬁts of both worlds: providing plans quickly when the timing is critical, while allowing (nearly) optimal plans to be generated when the system has sufﬁcient time to do so. Moreover, instead of going through the non-trivial process of developing a new algorithm/heuristic, hybrid planning combines off-the-shelf planners; therefore, hybrid planning does not require software engineers to master the complexity of developing new planning algorithms/heuristics. This thesis demonstrates that,compared to its constituent reactive and deliberative planners, hybrid planning can ﬁnd a better balance between the timeliness and the quality of planning, thereby improve adaptation effectiveness as measured by a multidimensional utility function capturing different dimensions of a system’s goal. In the process, the thesis makes contributions to both the theory and the practice of hybrid planning in self-adaptive systems. Speciﬁcally, the thesis provides: (a) a formal framework deﬁning the problem of hybrid planning; (b) a practical approach (grounded in the formal model) to apply hybrid planning to self-adaptive systems; (c) informal guidelines and a quantitative approach to help engineers to select an appropriate set of planners to instantiate hybrid planning for a given domain, and (d) evaluation of hybrid planning using two realistic systems to bridge the gap between theory and practice.
Pseudo-Hermitian approach to Goldstone's theorem in non-Abelian non-Hermitian quantum field theories
Creators: name: Fring, Andreas
name: Taira, Takanobu
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We generalise previous studies on the extension of Goldstone's theorem from Hermitian to non-Hermitian quantum field theories with Abelian symmetries to theories possessing a glocal non-Abelian symmetry. We present a detailed analysis for a non-Hermitian field theory with two complex two component scalar fields possessing a SU(2)-symmetry and indicate how our finding extend to the general case. In the PT-symmetric regime and at the standard exceptional point the Goldstone theorem is shown to apply, although different identification procedures need to be employed. At the zero exceptional points the Goldstone boson can not be identified. Comparing our approach, based on the pseudo-Hermiticity of the model, to an alternative approach that utilises surface terms to achieve compatibility for the non-Hermitian system, we find that the explicit forms of the Goldstone boson fields are different.
description: 14 pages, 2 figures
Cooperative Grain Marketing: Changes, Issues, Alternatives
Creators: name: Warman, Marc
name: Warman, Marc
Publisher: name: Unknown
Year: 1994
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Farmer cooperatives
subject: grain
subject: marketing
subject: policy
subject: historical

description: This report discusses the various changes the cooperative grain marketing industry has experienced during the past 2 decades. The different influences and factors that led to these changes are analyzed. Issues currently affecting grain marketing cooperatives and that will define the future environment in which they operate are also discussed. Finally, some general directions that cooperatives can follow to become more competitive are outlined.
A gold complex single crystal comprised of nanoporosity and curved surfaces
Creators: name: Khristosov, Maria Koifman
name: Bloch, Leonid
name: Burghammer, Manfred
name: Zaslansky, Paul
name: Kauffmann, Yaron
name: Katsman, Alex
name: Pokroy, Boaz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Complex hierarchical shapes are widely known in biogenic single crystals, but growing of intricate synthetic metal single crystals is still a challenge. Here we report on a simple method for growing intricately shaped single crystals of gold, each consisting of a micron-sized crystal surrounded by a nanoporous structure, while the two parts comprise a single crystal. This is achieved by annealing thin films of gold and germanium to solidify a eutectic composition melt at a hypoeutectic concentration (Au-enriched composition). Transmission electron microscopy and synchrotron submicron scanning diffractometry and imaging confirms that the whole structure was indeed a single crystal. A kinetic model showing how this intricate single-crystal structure can be grown is presented.
Modification of Dust Grain Structure by Sputtering
Creators: name: Gray, M. D.
name: Edmunds, M. G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have applied the SRIM computer code to study the sputtering of some likely astrophysical grain materials, and we have shown that selective embedding of metallic projectiles offers a partial explanation of gas-phase depletions. We show that supernova shockwaves sweep a significantly larger mass of interstellar gas per unit time than the shockwaves generated by outflows in star-forming regions. We apply our sputtering model to the bombardment levels expected in a supernova shock, and show that net embedding may dominate over net sputtering, leading to grain growth under some circumstances, particularly when the bombarding gas is enriched with metals from the supernova progenitor star. A combination of short cooling times and net embedding mean that it is possible for a type II supernova to generate more dust that it destroys, and we conclude that, in general, the sputtering process often leads to a compositional change in the grain material rather than simply to grain erosion.
description: tex file and nine postscript figure in tar.gz archive
Enhancement of acoustic spin pumping by acoustic distributed Bragg reflector cavity
Creators: name: Hwang, Yunyoung
name: Puebla, Jorge
name: Xu, Mingran
name: Lagarrigue, Aurelien
name: Kondou, Kouta
name: Otani, Yoshichika
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Surface acoustic waves (SAWs) in the GHz frequency range can inject spin currents dynamically into adjacent nonmagnetic layers via spin pumping effect associated with ferromagnetic resonance. Here, we demonstrate an enhancement of acoustic ferromagnetic resonance and spin current generation by a pair of SAW reflector gratings, which form an acoustic analogue of the distributed Bragg reflector cavity. In the experiment, we confirmed 2.04 $\pm$ 0.02 times larger SAW power absorption in a device with cavity than in case of no acoustic cavity. We confirmed up to 2.96 $\pm$ 0.02 times larger spin current generation by measuring electric voltages generated by the inverse Edelstein effect (IEE) at the interface between Cu and Bi$_2$O$_3$. The results suggest that acoustic cavities would be useful to enhance the conversion efficiency in SAW driven coupled magnon-phonon dynamics.
description: Main text and Supplemental Material
Equilibrium Phase Diagrams of Isostructural and Heterostructural Two-Dimensional Alloys from First Principles
Creators: name: Cavin, John
name: Mishra, Rohan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Alloying is a successful strategy for tuning the phases and properties of two-dimensional (2D) transition metal dichalcogenides (TMDCs). To accelerate the synthesis of new TMDC alloys, we present a method for generating temperature-composition equilibrium phase diagrams by combining first-principles total energy calculations with thermodynamic solution models. This method is applied to three representative 2D TMDC alloys: an isostructural alloy, MoS2(1-x)Te2x, and two heterostructural alloys, Mo1-xWxTe2 and WS2(1-x)Te2x. We show that the mixing enthalpy of the entire composition range of these binary alloys can be reliably represented using a sub-regular solution model fitted to the total energy of a small number of compositions that are calculated using density-functional theory on special quasi-random structures. The sub-regular solution model uses a cubic fit that captures three-body effects that are important in these TMDC alloys having hexagonal structures. By comparing both isostructural and heterostructural phase diagrams generated with this method to those calculated with cluster expansion methods, we demonstrate that this method can be used to rapidly design phase diagrams of TMDC alloys, and related 2D materials.
DARIMAC: An Export Marketing Agency-In-Common for Dairy Cooperatives
Creators: name: Liebrand, Carolyn Betts
name: Spatz, Karen J.
name: Liebrand, Carolyn Betts
name: Spatz, Karen J.
Publisher: name: Unknown
Year: 1993
Subjects: subject: International Relations/Trade
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Marketing agency-in-common
subject: dairy cooperatives
subject: agricultural exports

description: The report conceptualizes a marketing agency-in-common (MAC) of dairy cooperatives to facilitate the export of manufactured dairy products. A specific plan for the organization and operation of a MAC to export product(s) is described. Avenues for exporting both bulk and differentiated (value added) product lines are discussed.
Elevated stratopause events in the current and a future climate: A chemistry-climate model study
Creators: name: Scheffler, Janice
name: Ayarzagüena, Blanca
name: Orsolini, Yvan J.
name: Langematz, Ulrike
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: Elevated stratopause events
subject: Chemistry-climate model study
subject: Future climate
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften

description: The characteristics and driving mechanisms of Elevated Stratopause Events (ESEs) are examined in simulations of the ECHAM/MESSy Atmospheric Chemistry (EMAC) chemistry-climate model under present and projected climate conditions. ESEs develop after sudden stratospheric warmings (SSWs) in boreal winter. While the stratopause descends during SSWs, it is reformed at higher altitudes after the SSWs, leading to ESEs in years with a particularly high new stratopause. EMAC reproduces well the frequency and main characteristics of observed ESEs. ESEs occur in 24% of the winters, mostly after major SSWs. They develop in stable polar vortices due to a persistent tropospheric wave forcing leading to a prolonged zonal wind reversal in the lower stratosphere. By wave filtering, this enables a faster re-establishment of the mesospheric westerly jet, polar downwelling and a higher stratopause. We find the presence of a westward-propagating wavenumber-1 planetary wave in the mesosphere following the onset, consistent with in-situ generation by large-scale instability. By the end of the 21st century, the number of ESEs is projected to increase, mainly due to a sinking of the original stratopause after strong tropospheric wave forcing and planetary wave dissipation at lower levels. Future ESEs develop preferably in more intense and cold polar vortices, and tend to be shorter. While in the current climate, planetary wavenumber-2 contributes to the forcing of ESEs, future wave forcing is dominated by wavenumber-1 activity as a result of climate change. Hence, a persistent wave forcing seems to be more relevant for the development of an ESE than the wavenumber decomposition of the forcing.
Random tilings of high symmetry: II. Boundary conditions and numerical studies
Creators: name: Widom, M.
name: Destainville, N.
name: Mosseri, R.
name: Bailly, F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We perform numerical studies including Monte Carlo simulations of high rotational symmetry random tilings. For computational convenience, our tilings obey fixed boundary conditions in regular polygons. Such tilings are put in correspondence with algorithms for sorting lists in computer science. We obtain statistics on path counting and vertex coordination which compare well with predictions of mean-field theory and allow estimation of the configurational entropy, which tends to the value 0.568 per vertex in the limit of continuous symmetry. Tilings with phason strain appear to share the same entropy as unstrained tilings, as predicted by mean-field theory. We consider the thermodynamic limit and argue that the limiting fixed boundary entropy equals the limiting free boundary entropy, although these differ for finite rotational symmetry.
description: Published version (as compared to v2, an erroneous figure corrected in Table II)
Culturally responsive teaching : fostering identities of confidence in the classroom
Creators: name: Johal, Parveen
Publisher: name: The University of British Columbia
Year: 2014

description: The following major paper has been created in response to the pervasive Eurocentric curriculum that exists within the educational systems of Canada. The paper has been written with particular attention being given to fostering voice and confidence in minority students through an inclusive schooling approach where accurate representation is given to the minorities that make up the classrooms of Canada. The ultimate goal of the paper is to create awareness to the issue, as well as provide feasible ideas for educators to create a culturally sensitive program in the classroom.