cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Generalized dissipation dilution in strained mechanical resonators
Creators: name: Fedorov, Sergey A.
name: Engelsen, Nils J.
name: Ghadimi, Amir H.
name: Bereyhi, Mohammad J.
name: Schilling, Ryan
name: Wilson, Dalziel J.
name: Kippenberg, Tobias J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Mechanical resonators with high quality factors are of relevance in precision experiments, ranging from gravitational wave detection and force sensing to quantum optomechanics. Beams and membranes are well known to exhibit flexural modes with enhanced quality factors when subjected to tensile stress. The mechanism for this enhancement has been a subject of debate, but is typically attributed to elastic energy being "diluted" by a lossless potential. Here we clarify the origin of the lossless potential to be the combination of tension and geometric nonlinearity of strain. We present a general theory of dissipation dilution that is applicable to arbitrary resonator geometries and discuss why this effect is particularly strong for flexural modes of nanomechanical structures with high aspect ratios. Applying the theory to a non-uniform doubly clamped beam, we show analytically how dissipation dilution can be enhanced by modifying the beam shape to implement "soft clamping", thin clamping and geometric strain engineering, and derive the ultimate limit for dissipation dilution.
Mean field theory for collective motion of quantum meson fields
Creators: name: Tsue, Y.
name: Vautherin, D.
name: Matsui, T.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Mean field theory for the time evolution of quantum meson fields is studied in terms of the functional Schroedinger picture with a time-dependent Gaussian variational wave functional. We first show that the equations of motion for the variational wavefunctional can be rewritten in a compact form similar to the Hartree-Bogoliubov equations in quantum many-body theory and this result is used to recover the covariance of the theory. We then apply this method to the O(N) model and present analytic solutions of the mean field evolution equations for an N-component scalar field. These solutions correspond to quantum rotations in isospin space and represent generalizations of the classical solutions obtained earlier by Anselm and Ryskin. As compared to classical solutions new effects arise because of the coupling between the average value of the field and its quantum fluctuations. We show how to generalize these solutions to the case of mean field dynamics at finite temperature. The relevance of these solutions for the observation of a coherent collective state or a disoriented chiral condensate in ultra-relativistic nuclear collisions is discussed.
description: 31 pages, 2 Postscript figures, uses ptptex.sty
Labor Market Effects of Inconsistent Policy Interventions: Evidence from India's Employment Guarantees
Creators: name: Bahal, G.
name: Shrivastava, A.
Publisher: name: Faculty of Economics
Year: 2016
Subjects: Employment guarantee
wage rigidity
uncertainty
welfare
NREGA
India

description: Recent evidence suggests that large employment guarantee schemes in India have increased private wages. Juxtaposed with this body of work are studies that show how the lack of administrative capacity, political will, and other supply factors cause program provision to be rather limited and highly variable across districts and over time. This paper attempts to understand the cost of variability in program provision in terms of the labor market outcomes. We find that in the presence of downward wage rigidity, forward-looking employers compress wage increases today because of the uncertainty regarding the level of program provision in the future. Our theory generates two key empirically verified predictions: (i) greater variability in program provision results in a larger compression of wage increases; and (ii) that compression of wage increases is more severe in districts where inflation is low relative to where inflation is high. This has important policy implications as we show that by simply reducing the variability in program provision, without increasing the average expenditure, can be welfare enhancing.
title: ADCO, Second cartulaire de Saint-Étienne de Dijon (XVe siècle), Cart. 22 (G 126), 110 folios, f. 0004
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi

description: Second cartulaire de Saint-Étienne de Dijon (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 22 (G 126), 110 folios, f. 0004, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Second cartulaire de Saint-Étienne de Dijon (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 22 (G 126), 110 folios, f. 0004, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Fuel poverty and well-being: a consmer theory and stochastic fronteir approach
Creators: name: Rodríguez-Álvarez, A.
name: Orea, L.
name: Jamasb, T.
Publisher: name: Faculty of Economics
Year: 2016

description: Evidence and conventional wisdom suggest that general poverty has a negative effect on the well-being of individuals. However, the mechanisms through which this effect occurs are not well-understood. In this paper we analyse the effect of general and fuel poverty as well as the social dimension through peer comparison on the objective and perceived well-being of households. We develop a novel approach to analyse fuel poverty and well-being based on consumer theory. Individual preferences are modelled using indifference curves and a distance function where the preferences of individuals are affected by their poverty status. We use the survey data from the official Spanish Living Conditions Survey (SLCS) for 2013 which contains over 16,800 observations on household members. The results show that both general and fuel poverty influence the reference indifference curve but that individuals also compare themselves with their peers. The proposed model also allows us to corroborate how general and fuel poverty affect well-being and how effective policies can be designed to improve social welfare.
Lettre de Claude-Urbain de Retz de Bressolles, baron de Servières à Jean-François Séguier, 1783-01-04
Creators: name: Non identifié, Non identifié
name: Identifié, Non
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021

description: [transcription] Samedi 4 janvier 1783
Illustre maître

Voici la lettre de Lamanonet ma réponse que je vous prie de lire l'une et l'autre à tête reposée, après quoi vous me les rendrez.

Je vous renvois 2 volumes.

Faites-moi l'amitié de me prêter

1° ) Un Horace

2°) Les Mémoires de Toulouse

3°) Le recueil de d'Aubais pour l'histoire de France.

4°) Le t. 1er de Gebelin allégories orientales.
description: [personnes citées] Jean Honoré Robert de Paul de Lamanon
description: [reférence bibliographique citée]
Aubais, Charles de Baschi du Cayla marquis d’ & Ménard, Léon , Pièces fugitives, Paris, Chaubert et Hérissant, 1759. Histoire et Mémoires de l'académie des sciernces, inscriptions et belles-lettres de Toulouse, Toulouse, 1782 tome I, 1784 tome 2
. Court de Gébelin, Antoine, Monde primitif analysé et comparé avec le monde moderne considéré dans son génie allégorique et dans les allég
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 130, fol. 10
A self-consistent treatment of damped motion for stable and unstable collective modes
Creators: name: Hofmann, H.
name: Kiderlen, D.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We address the dynamics of damped collective modes in terms of first and second moments. The modes are introduced in a self-consistent fashion with the help of a suitable application of linear response theory. Quantum effects in the fluctuations are governed by diffusion coefficients D_{μν}. The latter are obtained through a fluctuation dissipation theorem generalized to allow for a treatment of unstable modes. Numerical evaluations of the D_{μν} are presented. We discuss briefly how this picture may be used to describe global motion within a locally harmonic approximation. Relations to other methods are discussed, like "dissipative tunneling", RPA at finite temperature and generalizations of the "Static Path Approximation".
description: 31 pages, Latex, 7 Postscript figures; submitted to JMPE e-mail: hhofmann@physik.tu-muenchen.de www home page: http://www.physik.tu-muenchen.de/tumphy/e/T36/hofmann.html
A coupled component GARCH model for intraday and overnight volatility
Creators: name: Linton, O.
name: Wu, J.
Publisher: name: Faculty of Economics
Year: 2016
Subjects: Distance functions
fuel poverty
general poverty
indifference curve
stochastic frontier analysis
subjective well-being

description: We propose a semi-parametric coupled component GARCH model for intraday and overnight volatility that allows the two periods to have different properties. To capture the very heavy tails of overnight returns, we adopt a dynamic conditional score model with t innovations. We propose a several step estimation procedure that captures the nonparametric slowly moving components by kernel estimation and the dynamic parameters by t maximum likelihood. We establish the consistency and asymptotic normality of our estimation procedures. We extend the modelling to the multivariate case. We apply our model to the study of the component stocks of the Dow Jones industrial average over the period 1991-2016. We show that actually overnight volatility has increased in importance during this period. In addition, our model provides better intraday volatility forecast since it takes account of the full dynamic consequences of the overnight shock and previous ones.
Long-Run Debt Ratios with Fiscal Fatigue
Creators: name: Robertson, D.
name: Tambakis, D.
Publisher: name: Faculty of Economics
Year: 2016
Subjects: Debt sustainability
Debt-output ratio
Fiscal policy rules.

description: We investigate the implications of fiscal fatigue � governments� declining ability to increase primary fiscal balances with rising public debt - utilising the cubic policy rule estimated by Ghosh et al. (2013). We characterize its equilibrium debt-output ratios and fiscal space, and analyze its dynamic stability in the deterministic (long-run) case. There may be up to three equilibria, of which the intermediate one will typically require a stability criterion stricter than fiscal solvency. We illustrate numerically for six developed economies.
Holographic $J/ψ$ production near threshold and the proton mass problem
Creators: name: Hatta, Yoshitaka
name: Yang, Di-Lun
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It has been suggested that the production of a heavy quarkonium near threshold in electron-proton scattering can shed light on the origin of the proton mass via the QCD trace anomaly. We study the photoproduction of $J/ψ$ off the proton using gauge/string duality and demonstrate that the $t$-dependence of the differential cross section $dσ/dt$ at small-$t$ is a sensitive probe of the trace anomaly.
description: 17 pages, 7 figures. v2: Eq.(24,27) corrected, minor changes in numerical results
Ownership and competition: Finding Performance Breaks for Great Britain's Power Plants
Creators: name: Triebs, T.
name: Pollitt, M. G.
Publisher: name: Faculty of Economics
Year: 2010
Subjects: Privatization
efficiency
structural breaks

description: The literature shows that for most UK industries privatization might be necessary but is not sufficient to produce economic benefits. Often prior changes in management or later changes in market structure and regulation have larger impacts than privatization itself. We ask what changes around privatization had the greatest impact on efficiency for UK electricity generators. We analyse the effects of privatization and other changes in incentives on plant efficiency using a newly compiled unbalanced panel of about 60 plants for the years 1980 to 2004. We measure efficiency as input demands for two standard inputs, fuel and labour as well as three air emissions, CO2, SO2, and NOx. We model the change in efficiency as a single intercept break and allow for the break to occur at an unknown date. Inference for breaks and break dates relies on Quandt-Andrews type tests. We find breaks associated with efficiency increases for fuel and labour. Breaks and efficiency changes for the three emissions are generally related to fuel efficiency privatization. Efficiency increases first for labour and later for fuel. We conclude that electricity privatization like other UK privatizations was a unique event. Privatization was important to prepare the ground but it seems that only the subsequent restructuring of the industry, the reduction of political interference in fuel choice, and investment in new and more efficient generation technologies increased efficiency.
A Relation on Gaugino Masses in a Supersymmetric SO(10)_GUT x SO(6)_H Unified Model
Creators: name: Kurosawa, Kiichi
name: Nomura, Yasunori
name: Suzuki, Koshiro
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The doublet-triplet splitting problem in supersymmetric grand unified theories is elegantly solved in a supersymmetric SO(10)_GUT x SO(6)_H model. In this model, the gauginos in the supersymmetric standard model do not respect the usual GUT gaugino mass relation. We point out that in spite of non-unified gaugino masses there is one nontrivial relation among gaugino masses in the model. Thus, it can be used to test the model in future experiments.
description: 9 pages, Latex, 1 ps figure
A future auction mechanism for distributed generation
Creators: name: Greve, T.
name: Pollitt, M.
Publisher: name: Faculty of Economics
Year: 2016
Subjects: Future electricity networks
electricity subscriptions
proxy agent
VCG auction mechanism

description: Auction designs in current electricity markets will need to be adjusted to cope with massively increased small-scale distributed generation and demand response, as these are integrated into the electricity system. We present a VCG mechanism that addresses the two most important challenges facing future power systems, namely uncertainty of costs and complexity of bidding strategies. The mechanism is built up around heterogeneous goods, useful for different levels of response time of electricity or different Quality of Service agreements, package bidding and a proxy agent. The proxy agent will ensure optimal bids from non-professional suppliers. Our mechanism has the expected desirable properties by design.
Inference From Intrinsic Bayes’ Procedures Under Model Selection and Uncertainty
Creators: name: Womack, Andrew J.
name: León-Novelo, Luis
name: Casella, George
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: In this article, we present a fully coherent and consistent objective Bayesian analysis of the linear regression model using intrinsic priors. The intrinsic prior is a scaled mixture of g-priors and promotes shrinkage toward the subspace defined by a base (or null) model. While it has been established that the intrinsic prior provides consistent model selectors across a range of models, the posterior distribution of the model parameters has not previously been investigated. We prove that the posterior distribution of the model parameters is consistent under both model selection and model averaging when the number of regressors is fixed. Further, we derive tractable expressions for the intrinsic posterior distribution as well as sampling algorithms for both a selected model and model averaging. We compare the intrinsic prior to other mixtures of g-priors and provide details on the consistency properties of modified versions of the Zellner–Siow prior and hyper g-priors. Supplementary materials for this article are available online.
Van Hove Exciton-Cageons and High-T$_c$ Superconductivity: XB: Polaronic Coupling in the Doped Material
Creators: name: Markiewicz, R. S.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: A purely ionic interpretation of the tilting mode instabilities in La$_{2-x}$A$ _x$CuO$_4$ (A=Sr,Ba) is shown to be not self-consistent: the dominant factor influencing the doping dependence of the interlayer mismatch is the large change in the Cu-O bond length, which in turn leads to a strong electron-phonon coupling. This coupling is closely related to the vHs-JT effect. This new insight clarifies the role of the tilt-mode instabilities. The main JT coupling is {\it not} to these modes, but to the in-plane O-O bond stretching modes which split the vHs degeneracy. However, as these modes soften, they couple to the lower-lying tilt modes, so that the ultimate instability has a finite tilt component. The bond stretch modes have a large, linear coupling to electrons, with clear polaronic effects. A striking result of this is that there will be a large polaronic band narrowing near the vHs, whether or not the vHs is near the Fermi level. This vHs-localized band narrowing provides a natural explanation for the common occurence of extended vHs's.
description: 22 pages RevTeX, 7 figures available upon request
Economic zones for future complex power systems
Creators: name: Greve, T.
name: Charalampos, P.
name: Pollitt, M.
name: Taylor, P.
Publisher: name: Faculty of Economics
Year: 2016
Subjects: future power systems
zones of control
auctions

description: This paper examines the economics of the electricity market out to 2050. We propose a flexible zoning concept, built up around economic and technical layers, in networks of the order of hundreds of thousands or millions of nodes. The Economic Layer runs auctions to determine the electricity to be delivered and prices. The Economic Layer delivers suggestions after a fixed ordering, starting with suppliers and demands that generates the lowest overall system cost, then second-lowest overall network cost etc. These suggestions are delivered to the Technical Layer that checks for feasibility in terms of technical constraints. The first match between the ranked suggestions and non-violation of technical constraints is chosen. We demonstrate why this paper should be considered for future power systems. This paper extends previous work on reactive power exchange by introducing market considerations in zoning mechanisms for active power exchanges. We are also exhibit the potential for much higher price resolution in distribution networks via our concept of economic zoning.
The Shift from Processor Power Consumption to Performance Variations: Fundamental Implications at Scale
Creators: name: Schuchart, Joseph
name: Hackenberg, Daniel
name: Schöne, Robert
name: Ilsche, Thomas
name: Nagappan, Ramkumar
name: Patterson, Michael K.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: The Intel Haswell-EP processor generation introduces several major advancements of power control and energy-efficiency features. For computationally intense applications using advanced vector extension (AVX) instructions, the processor cannot continuously operate at full speed but instead reduces its frequency below the nominal frequency to maintain operations within thermal design power (TDP) limitations. Moreover, the running average power limitation (RAPL) mechanism to enforce the TDP limitation has changed from a modeling to a measurement approach. The combination of these two novelties have significant implications. Through measurements on an Intel Sandy Bridge-EP cluster, we show that previous generations have sustained homogeneous performance across multiple CPUs and compensated for hardware manufacturing variability through varying power consumption. In contrast, our measurements on a Petaflop Haswell system show that this generation exhibits rather homogeneous power consumption limited by the TDP and capped by the improved RAPL while providing inhomogeneous performance under full load. Since all of these controls are transparent to the user, this behavior is likely to complicate performance analysis tasks and impact tightly coupled parallel applications.
Testing Nonperturbative Ansaetze for the QCD Field Strength Correlator
Creators: name: Antonov, Dmitri
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A test for the Gaussian and exponential Ansaetze for the nonperturbative parts of the coefficient functions, D^{nonpert.} and D_1^{nonpert.}, which parametrize the gauge-invariant bilocal correlator of the field strength tensors in the stochastic vacuum model of QCD, is proposed. It is based on the evaluation of the heavy-quark condensate within this model by making use of the world-line formalism and equating the obtained result to the one following directly from the QCD Lagrangian. This yields a certain relation between D^{nonpert.}(0) and D_1^{nonpert.}(0), which is further compared with an analogous relation between these quantities known from the existing lattice data. Such a comparison leads to the conclusion that at the distances smaller than the correlation length of the vacuum, Gaussian Ansatz is more suitable than the exponential one.
description: 10 pages, LaTeX2e, 1 table, no figures
Machine Learning-Based Customer Segmentation for Retail Insights
Creators: name: Chintha Hari haran, Akkanapalli Hemanth, Nenavath Saanki, Mallipeddi Sahith, M.Deenababu
Publisher: name: Zenodo
Year: 2025

description: The dynamic retail environment demands data-driven approaches to decipher customer preferences,enhance marketing precision, and boost profitability. This project leverages advanced machine learningtechniques to segment mall customers by analyzing demographic and transactional data. Through thoroughdata cleaning, visualization, and feature analysis, critical patterns in spending behavior, income distribution,and customer demographics were uncovered. Four clustering algorithms — K-Means++, Gaussian MixtureModel (GMM), Hierarchical Clustering, and DBSCAN — were applied to categorize customers, withperformance assessed using Silhouette Score and Davies-Bouldin Index metrics. K-Means++ emerged asthe top performer, yielding the highest Silhouette Score and lowest Davies-Bouldin Index, indicatingsuperior cluster quality. Visualizations such as scatter plots, dendrograms, and correlation matrices enrichedthe analysis by revealing behavioral insights and inter-attribute relationships. This system surpassesconventional segmentation by providing automated, scalable, and accurate customer grouping, enablingretailers to craft targeted promotions, optimize resource allocation, and elevate customer satisfaction.Future improvements could include real-time data integration, deep learning methods like autoencoders,and an interactive platform for actionable insights.
The intercept of the BFKL pomeron from Forward Jets at HERA
Creators: name: Contreras, J. G.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently the H1 and ZEUS collaborations have presented cross sections for DIS events with a forward jet. The BFKL formalism is able to produce an excellent fit to these data. The extracted intercept of the hard pomeron suggests that when all higher order corrections are taken into account the cross section will still rise very rapidly as expected for low $x$ dynamics.
description: 10 pages, one figure, accepted for publication in PLB
Statistical fluctuations for the fission process on its decent from saddle to scission
Creators: name: Hofmann, H.
name: Kiderlen, D.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We reconsider the importance of statistical fluctuations for fission dynamics beyond the saddle in the light of recent evaluations of transport coefficients for average motion. The size of these fluctuations are estimated by means of the Kramers-Ingold solution for the inverted oscillator, which allows for an inclusion of quantum effects.
description: 12 pages, Latex, 5 Postscript figures; submitted to PRC e-mail: hhofmann@physik.tu-muenchen.de www home page: http://www.physik.tu-muenchen.de/tumphy/e/T36/hofmann.html
Macroeconomic Stabilization, Monetary-fiscal Interactions, and Europe's monetary Union
Creators: name: Corsetti, G.
name: Dedola, L.
name: Jarocinsk, M.
name: Mackowiak, B.
Publisher: name: Faculty of Economics
Year: 2016
Subjects: Lower Bound on Nominal Interest Rates;
Self-fulfilling Sovereign Default
Eurobond
Government Bonds
Joint Analysis of Fiscal and Monetary Policy

description: The euro area has been experiencing a prolonged period of weak economic activity and very low inflation. This paper reviews models of business cycle stabilization with an eye to formulating lessons for policy in the euro area. According to standard models, after a large recessionary shock accommodative monetary and fiscal policy together may be necessary to stabilize economic activity and inflation. The paper describes practical ways for the euro area to be able to implement an effective monetary-fiscal policy mix.
Two-layer compact stars with crystalline quark matter: Screening effect on the tidal deformability
Creators: name: Lau, S. Y.
name: Leung, P. T.
name: Lin, L. -M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: (Abridged) It is well known that the tidal deformability of a compact star carries important information about the interior equation-of-state (EOS) of the star. The first gravitational-wave event GW170817 from a binary compact star merger observed by the LIGO/VIRGO detectors have already put limits on the tidal deformability and provided constraints on the ultra-high nuclear density EOS. In view of this ground breaking discovery, we revisit and extend our previous work [Phys. Rev. D 95, 101302(R) (2017)] which found that taking the effect of elasticity into account in the calculation of the tidal deformability of compact star models composed of crystalline color-superconducting (CCS) quark matter can break the universal I-Love relation discovered for fluid compact stars. In this paper, we present our formulation in detail and provide more analysis to complement our previous findings. We focus and extend the study of the screening effect on the tidal deformability, which we found previously for hybrid star models, to various theoretical two-layer compact star models. We show that the screening effect of these two-layer models in general depends on the thickness of the envelope and the ratio between the density gap and the core density at the core-envelope interface. However, for models with a fluid envelope and a vanishing small density gap, the screening effect remains strong even as the thickness of the envelops tends to zero if the quark matter core has a fairly uniform density. The relevance of our study to GW170817 is also discussed. Our study advocates that the tidal deformability not only provides us information on the EOS, but may also give insights into the multi-layer structure and elastic properties of compact star models composed of CCS quark matter.
description: 20 pages
Press release: ORCID funders open letter
Creators: name: Meadows, Alice
Publisher: name: ORCID
Year: 2018
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences

description: Press release for launch of ORCID funders open letter.
ORCID is pleased to announce the launch of an open letter in support of the use of ORCID identifiers (iDs) in the grant application and reporting process. Nine funding bodies around the world have signed the letter and invite others to join them.
ARC: Adaptive Ray-tracing with CUDA, a New Ray Tracing Code for Parallel GPUs
Creators: name: Hartley, Blake
name: Ricotti, Massimo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the methodology of a photon-conserving, spatially-adaptive, ray-tracing radiative transfer algorithm, designed to run on multiple parallel Graphic Processing Units (GPUs). Each GPU has thousands computing cores, making them ideally suited to the task of tracing independent rays. This ray-tracing implementation has speed competitive with approximate momentum methods, even with thousands of ionization sources, without sacrificing accuracy and resolution. Here, we validate our implementation with the selection of tests presented in the "cosmological radiative transfer codes comparison project," to demonstrate the correct behavior of the code. We also present a selection of benchmarks to demonstrate the performance and computational scaling of the code. As expected, our method scales linearly with the number of sources and with the square of the dimension of the 3D computational grid. Our current implementation is scalable to an arbitrary number of nodes possessing GPUs, but is limited to a uniform resolution 3D grid. Cosmological simulations of reionization with tens of thousands of radiation sources and intergalactic volumes sampled with 1024$^3$ grid points take about 30 days on 64 GPUs to reach complete reionization.
description: 18 pages, 13 figures
Myrmicocrypta elisabethae Weber, 1936, sp. nov.
Creators: name: Neal A. Weber, University of North Dakota
Publisher: name: Zenodo
Year: 1936
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Myrmicocrypta
Myrmicocrypta elisabethae

description: Myrmicocrypta elisabethae, sp. nov.
Female (dealate): Length 3.2 mm. - Head, excluding mandibles, 11/4 times as long as wide, occipital margin nearly plane, barely impressed in the middle, sides sub-parallel, feebly convex in front of and behind eyes. Anterior clypeal margin evenly convex, posterior margins raised as compressed, acute, and reflected teeth in front of antennal insertions. Frontal lobes in form of sub-vertical carinae which end posteriorly in the form of low ridges surrounding a circular pre-ocellar concavity. Eyes convex, situated closer to occipital margin than to mandibular insertions. Antennal scapes moderately stout, feebly curved distally, exceeding occipital margin by a distance equal to twice their distal diameter. Joints 5-8 of funiculus about as broad as long, other joints longer, terminal joint slightly shorter than joints 6-9 taken together.
Pronotum with two distinct pairs of lateral tubercles, a small, acute anterior pair and a much larger and blunter posterior pair. In profile, scutum of mesonotum feebly convex, scutellum projecting backward in form of pointed tooth slightly deflected apically. Epinotal spines large, acute, backwardly directed, declivous surface of epinotum vertical.
Petiole with peduncle distinctly longer than node, the latter trapezoidal in profile and, from above, with carinate sides. Postpetiole, from above, hexagonal, twice as broad as long, anterior margin with lateral extensions appearing in profile as tubercles. Anterior margin of gaster straight and as broad as maximum breadth of postpetiole.
Finely reticulate, thorax sparsely and indistinctly rugulose, anterior margin of first gastric segment coarsely rugose. - Squamate hairs of head moderately abundant, on scutum of mesonotum forming two median and dorso-lateral longitudinal rows, on sides of thorax confined to pronotal and epinotal protuberances, absent from sides of petiole, sparsely covering dorsum of postpetiole and gaster but only in small part obscuring integument, abundant on antennal scapes and legs. - Ferruginous, dorsal surfaces of head, mesonotum and gaster darker.
Described from one female taken by myself September 5, 1935, in heavy virgin rain forest a few miles from the Forest Settlement, Mazaruni River, British Guiana.
This species is of the same size as M. buenzlii Borgmeier but is much paler and is less coarsely sculptured and pilose. M. unidentata, described here from the worker, cannot belong to this species because of the distinct and reflected frontal lobes, reduced tubercles of the thorax, and very different postpetiole.
description: Published as part of Neal A. Weber, University of North Dakota, 1936, The biology of the fungus-growing ants. Part. I. New forms. 1, pp. 378-409 in Revista de Entomologia 7 on pages 383-384
Rank-Ordering Statistics of Extreme Events: Application to the Distribution of Large Earthquakes
Creators: name: Sornette, Didier
name: Knopoff, Leon
name: Kagan, Yan
name: Vanneste, Christian
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Rank-ordering statistics provides a perspective on the rare, largest elements of a population, whereas the statistics of cumulative distributions are dominated by the more numerous small events. The exponent of a power law distribution can be determined with good accuracy by rank-ordering statistics from the observation of only a few tens of the largest events. Using analytical results and synthetic tests, we quantify the systematic and the random errors. We also study the case of a distribution defined by two branches, each having a power law distribution, one defined for the largest events and the other for smaller events, with application to the World-Wide (Harvard) and Southern California earthquake catalogs. In the case of the Harvard moment catalog, we make more precise earlier claims of the existence of a transition of the earthquake magnitude distribution between small and large earthquakes; the $b$-values are $b_2 = 2.3 \pm 0.3$ for large shallow earthquakes and $b_1 = 1.00 \pm 0.02$ for smaller shallow earthquakes. However, the cross-over magnitude between the two distributions is ill-defined. The data available at present do not provide a strong constraint on the cross-over which has a $50\%$ probability of being between magnitudes $7.1$ and $7.6$ for shallow earthquakes; this interval may be too conservatively estimated. Thus, any influence of a universal geometry of rupture on the distribution of earthquakes world-wide is ill-defined at best. We caution that there is no direct evidence to confirm the hypothesis that the large-moment branch is indeed a power law. In fact, a gamma distribution fits the entire suite of earthquake moments from the smallest to the largest satisfactorily. There is no evidence that the earthquakes of the Southern California catalog have a distribution with two
A One-Covariate at a Time, Multiple Testing Approach to Variable Selection in High-Dimensional Linear Regression Models
Creators: name: Chudik, A.
name: Kapetanios, G.
name: Pesaran, M. H.
Publisher: name: Faculty of Economics
Year: 2016
Subjects: One covariate at a time
multiple testing
model selection
high dimensionality
penalised regressions
boosting
Monte Carlo experiments

description: Model specification and selection are recurring themes in econometric analysis. Both topics become considerably more complicated in the case of large-dimensional data sets where the set of specification possibilities can become quite large. In the context of linear regression models, penalised regression has become the de facto benchmark technique used to trade o� parsimony and .t when the number of possible covariates is large, often much larger than the number of available observations. However, issues such as the choice of a penalty function and tuning parameters associated with the use of penalized regressions remain contentious. In this paper, we provide an alternative approach that considers the statistical significance of the individual covariates one at a time, whilst taking full account of the multiple testing nature of the inferential problem involved. We refer to the proposed method as One Covariate at a Time Multiple Testing (OCMT) procedure. The OCMT provides an alternative to penalised regression methods: It is based on statistical inference and is therefore easier to interpret and relate to the classical statistical analysis, it allows working under more general assumptions, it is faster, and performs well in small samples for almost all of the different sets of experiments considered in this paper. We provide extensive theoretical and Monte Carlo results in support of adding the proposed OCMT model selection procedure to the toolbox of applied researchers. The usefulness of OCMT is also illustrated by an empirical application to forecasting U.S. output growth and inflation.
Econometric Analysis of Production Networks with Dominant Units
Creators: name: Pesaran, M. H.
name: Fan Yang, C.
Publisher: name: Faculty of Economics
Year: 2016
Subjects: aggregate ?uctuations
strongly and weakly dominant units
spatial models
outdegrees
degree of pervasiveness
power law
input-output tables
US economy

description: This paper builds on the work of Acemoglu et al. (2012) and considers a production network with unobserved common technological factor and establishes general conditions under which the network structure contributes to aggregate fluctuations. It introduces the notions of strongly and weakly dominant units, and shows that at most a finite number of units in the network can be strongly dominant, while the number of weakly dominant units can rise with N (the cross section dimension). This paper further establishes the equivalence between the highest degree of dominance in a network and the inverse of the shape parameter of the power law. A new extremum estimator for the degree of pervasiveness of individual units in the network is proposed, and is shown to be robust to the choice of the underlying distribution. Using Monte Carlo techniques, the proposed estimator is shown to have satisfactory small sample properties. Empirical applications to US input-output tables suggest the presence of production sectors with a high degree of pervasiveness, but their effects are not sufficiently pervasive to be considered as strongly dominant.
Direct analysis real-time–high-resolution mass spectrometry for Triticum species authentication
Creators: name: Miano, Brunella
name: Righetti, Laura
name: Piro, Roberto
name: Dall’Asta, Chiara
name: Folloni, Silvia
name: Galaverna, Gianni
name: Suman, Michele
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: Due to favourable climate condition, Italy is a prominent producer of different wheat varieties. Several wheat baked goods are produced, but the most typical Italian foods, like pasta, pizza and bread, are made of durum and common wheat flour. Because of the great importance of wheat in the Italian food market, authenticity represents an essential quality parameter not only for the producers and regulatory bodies but also for consumers. The aim of our study was to test the effectiveness of an unconventional non-targeted method for the discrimination of Triticum species using direct analysis real time–high-resolution mass spectrometry (DART–HRMS). For this purpose, 60 wheat samples including durum, common and hulled wheat varieties were collected over two consecutive harvest years. Chemometric evaluation revealed an optimal sample clustering according to the wheat species and the presence of 18 significant markers able to discriminate the groups. The discrimination power obtained is promising since the use of DART–HRMS can significantly reduce the analysis time compared to chromatographic techniques. A plausible future commercial and industrial scenario could see the application of this analytical approach especially to evaluate the risk of substitution of higher value wheat species with lower value flours.
Myrmicocrypta unidentata Weber, 1936, sp. nov.
Creators: name: Neal A. Weber, University of North Dakota
Publisher: name: Zenodo
Year: 1936
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Myrmicocrypta
Myrmicocrypta unidentata

description: Myrmicocrypta unidentata, sp. nov.
Worker: Length 1.8 mm. - Head, excluding mandibles, 1.1 times as long as wide, occipital margin broadly convex, with rounded and shallow medial impression, sides sub-parallel, feebly convex in front of and behind eyes, anterior clypeal margin convex, posterior sides raised as acute teeth. Eyes small, convex, situated in middle of sides. Frontal lobes moderately large, reflected. Frontal region shallowly concave in middle, not distinctly marginate. Cutting margin of mandibles without distinct teeth, apical tooth well developed. Antennal scapes of moderate proportions, inflated and slightly curved distally, exceeding posterior margin by a distance equal to less than their distal diameter. Joints 2-9 of funiculus about as broad as long, terminal joint equal in length to joints 4-9 taken together.
Pronotum lacking the anterior and dorso-lateral pair of tubercles, sides with low carinae ending dorsally where the tubercles are in other species. Mesonotum, in profile, high arid convex, with three pairs of blunt tubercles of which the anterior is largest; from the posterior tubercle the mesonotum drops abruptly to the mesoepinotal impression except for a single stout and pointed tubercle on this declivous surface which is larger than any preceding. Basal surface of epinotum carinate on margins and produced behind as small but distinct teeth.
Peduncle of petiole shorter than node, the latter rising smoothly and convexly to a posteriorly descending dorsal surface. Postpetiole in profile with evenly convex dorsal and ventral surfaces, slightly shorter in length than petiole; from above trapezoidal, anterior and posterior margins parallel, feebly impressed postero-medially. First gastric segment slightly longer than wide, anterior and posterior margins straight. Legs of moderate length.
Opaque finely shagreened, mandibles finely striate. - Hairs of head numerous, narrow squamate; sparse on thorax, being confined to. projections, squamate; sparse on pedicel and gaster, squamate; more numerous on antennal scapes and legs but not greatly obscuring integument, narrow squamate. Pale ferruginous, darker on head, mandibles brown.
Described from one worker taken by myself August 23, 1935, in virgin greenheart (Nectandra Rodei Schomb.) forest near the Forest Settlement, Mazaruni River, British Guiana.
This species is noteworthy in small size, single large tooth or tubercle on declivous surface of mesonotum above the mesoepinotal impression, reduced spinulation and sparse pilosity of thorax. It cannot belong to M. elisabethae n. sp. here described because of the very different frontal lobes, pronotal spines, and postpetiole.
description: Published as part of Neal A. Weber, University of North Dakota, 1936, The biology of the fungus-growing ants. Part. I. New forms. 1, pp. 378-409 in Revista de Entomologia 7 on pages 384-385
Performance Analysis of Ultra-Reliable Short Message Decode and Forward Relaying Protocols
Creators: name: Nouri, Parisa
name: Alves, Hirley
name: Latva-aho, Matti
Publisher: name: arXiv
Year: 2018
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Machine-Type Communication (MTC) is a rapidly growing technology which covers a broad range of automated applications and propels the world into a fully connected society. Two new use cases of MTC are mMTC and URLLC, where mMTC support a large number of devices with high reliability and low rate connectivity while URLLC refers to excessively low outage probability under very stringent latency constraint. Herein, we examine the URLLC through three cooperative schemes, namely dual-hop DF, SC and MRC, and compare to direct transmission under Rayleigh fading. We compare the performance of studied cooperative protocols under two distinct power constraints with respect to latency and energy efficiency. Moreover, we illustrate the impact of coding rate on the probability of successful transmission in ultra-reliable region in addition to the effect of power allocation on the outage probability. We also provide the performance analysis of cooperative schemes in terms of energy efficiency and latency requirements.
Double-question Survey Measures for the Analysis of Financial Bubbles and Crashes
Creators: name: Pesaran, M. H.
name: Johnsson, I.
Publisher: name: Faculty of Economics
Year: 2016
Subjects: Price expectations
bubbles and crashes
house prices
belief valuations.

description: This paper proposes a new double-question survey method that elicits information about how individuals subjective belief valuations are compared and related to their price expectations. An individual respondent is presented with two sets of questions, one that asks about his/her belief regarding the value of an asset (whether it is over- or under-valued), and another regarding his/her expectations of the future price of that asset. Responses to these two questions are then used to measure the extent to which prices are likely to move towards or away from the subjectively perceived fundamental values. Using a theoretical asset pricing model with heterogenous agents we show that there exists a negative relationship between the agents expectations of price changes and their asset valuation. Double question surveys on equity, gold and house prices provide evidence in support of such relationships, particularly in the case of house price expectations. The effects of demographic factors, such as sex, age, education, ethnicity, and income are also investigated. It is shown that for house price expectations such demographic factors cease to be statistically significant once we condition on the respondents location and their asset valuation indicator. The results of the double-question surveys are then used to construct leading bubble and crash indicators, and their potential value is illustrated in the context of a dynamic panel regression of realized house price changes across a number of key Metropolitan Statistical Areas in the US.