cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Entropy evaluation sheds light on ecosystem complexity
Creators: name: Miotto, Mattia
name: Monacelli, Lorenzo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences
subject: 37N25

description: Preserving biodiversity and ecosystem stability is a challenge that can be pursued through modern statistical mechanics modeling. Here we introduce a variational maximum entropy-based algorithm to evaluate the entropy in a minimal ecosystem on a lattice in which two species struggle for survival. The method quantitatively reproduces the scale-free law of the prey shoals size, where the simpler mean-field approach fails: the direct near neighbor correlations are found to be the fundamental ingredient describing the system self-organized behavior. Furthermore, entropy allows the measurement of structural ordering, that is found to be a key ingredient in characterizing two different coexistence behaviors, one where predators form localized patches in a sea of preys and another where species display more complex patterns. The general nature of the introduced method paves the way for its application in many other systems of interest.
description: 13 pages, 5 figures
title: 01_1614
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Spin Force and Torque in Non-relativistic Dirac Oscillator on a Sphere
Creators: name: Shikakhwa, M. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The spin force operator on a non-relativistic Dirac oscillator ( in the non-relativistic limit the Dirac oscillator is a spin one-half 3D harmonic oscillator with strong spin-orbit interaction) is derived using the Heisenberg equations of motion and is seen to be formally similar to the force by the electromagnetic field on a moving charged particle . When confined to a sphere of radius R, it is shown that the Hamiltonian of this non-relativistic oscillator can be expressed as a mere kinetic energy operator with an anomalous part. As a result, the power by the spin force and torque operators in this case are seen to vanish. The spin force operator on the sphere is calculated explicitly and its torque is shown to be equal to the rate of change of the kinetic orbital angular momentum operator, again with an anomalous part. This, along with the conservation of the total angular momentum, suggest that the spin force exerts a spin-dependent torque on the kinetic orbital angular momentum operator in order to conserve total angular momentum. The presence of an anomalous spin part in the kinetic orbital angular momentum operator gives rise to an oscillatory behavior similar to the \textit{Zitterbewegung}. It is suggested that the underlying physics that gives rise to the spin force and the \textit{Zitterbewegung} is one and the same in NRDO and in systems that manifest spin Hall effect.
description: 7 pages
Stability Analysis of Sum Rules for Compton Scattering
Creators: name: Coriano', Claudio
name: Li, Hsiang-nan
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform a stability analysis of a recently proposed sum rule for pion Compton scattering at fixed angle and moderate Mandelstam invariants. The sum rule is found to be sensitive to the parameter $λ^2$, the contour radius of a generalized Borel transform. A modified phenomenological model for the continuum contribution is proposed to remove this dependence. It is shown that the best value of the quark-hadron duality interval $s_0=0.6$ GeV$^2$ is close to that in the form factor case ($s_0=0.7$ GeV$^2$). The application of this new model to the pion form factor is examined. A comparison of our predictions with those derived from a modified perturbative calculation including Sudakov suppression is also briefly considered.
description: 11 pages (latex), (CCUTH-93-1 preprint) 4 figs. availiable upon request (email:coriano@vana.physto.se)
Stacked Intelligent Metasurface Enabled LEO Satellite Communications Relying on Statistical CSI
Creators: name: Lin, Shining
name: An, Jiancheng
name: Gan, Lu
name: Debbah, Mérouane
name: Yuen, Chau
Publisher: name: arXiv
Year: 2024
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Low earth orbit (LEO) satellite communication systems have gained increasing attention as a crucial supplement to terrestrial wireless networks due to their extensive coverage area. This letter presents a novel system design for LEO satellite systems by leveraging stacked intelligent metasurface (SIM) technology. Specifically, the lightweight and energy-efficient SIM is mounted on a satellite to achieve multiuser beamforming directly in the electromagnetic wave domain, which substantially reduces the processing delay and computational load of the satellite compared to the traditional digital beamforming scheme. To overcome the challenges of obtaining instantaneous channel state information (CSI) at the transmitter and maximize the system's performance, a joint power allocation and SIM phase shift optimization problem for maximizing the ergodic sum rate is formulated based on statistical CSI, and an alternating optimization (AO) algorithm is customized to solve it efficiently. Additionally, a user grouping method based on channel correlation and an antenna selection algorithm are proposed to further improve the system performance. Simulation results demonstrate the effectiveness of the proposed SIM-based LEO satellite system design and statistical CSI-based AO algorithm.
description: 14 pages, 4 figures, accepted by IEEE WCL
Chemical Evolution in VeLLOs
Creators: name: Lee, Jeong-Eun
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A new type of object called "Very Low Luminosity Objects (VeLLOs)" has been discovered by the Spitzer Space Telescope. VeLLOs might be substellar objects forming by accretion. However, some VeLLOs are associated with strong outflows, indicating the previous existence of massive accretion. The thermal history, which significantly affects the chemistry, between substellar objects with a continuous low accretion rate and objects in a quiescent phase after massive accretion (outburst) must be greatly different. In this study, the chemical evolution has been calculated in an episodic accretion model to show that CO and N2H+ have a relation different from starless cores or Class 0/I objects. Furthermore, the CO2 ice feature at 15.2 micron will be a good tracer of the thermal process in VeLLOs.
description: corrected e-mail address
Changes in the cyclotron line energy on short and long timescales in V 0332+53
Creators: name: Vybornov, Vadim
name: Doroshenko, Viktor
name: Staubert, Rürdiger
name: Santangelo, Andrea
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the results of the pulse-amplitude-resolved spectroscopy of the accreting pulsar V 0332+53 using the NuSTAR observations of the source in 2015 and 2016. We investigate the dependence of the energy of the cyclotron resonant scattering feature (CRSF) as a function of X-ray luminosity on timescales comparable with the spin period of the pulsar within individual observations, and the behavior on longer timescales within and between the two observed outbursts. We confirm that in both cases the CRSF energy is negatively correlated with flux at luminosities higher than the critical luminosity and is positively correlated at lower luminosities. We also confirm the recently reported gradual decrease in the line energy during the giant outburst in 2015. Using the NuSTAR data, we find that this decrease was consistent with a linear decay throughout most of the outburst, and flattened or even reversed at the end of the 2015 outburst, approximately simultaneously with the transition to the subcritical regime. We also confirm that by the following outburst in 2016 the line energy rebounded to previous values. The observed behavior of the CRSF energy with time is discussed in terms of changes in the geometry of the CRSF forming region caused by changes in the effective magnetospheric radius.
description: 7 pages, 7 figures; ; accepted for publication in A&A
Interlacing Relaxation and First-Passage Phenomena in Reversible Discrete and Continuous Space Markovian Dynamics
Creators: name: Hartich, David
name: Godec, Aljaz
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We uncover a duality between relaxation and first passage processes in ergodic reversible Markovian dynamics in both discrete and continuous state-space. The duality exists in the form of a spectral interlacing -- the respective time scales of relaxation and first passage are shown to interlace. Our canonical theory allows for the first time to determine the full first passage time distribution analytically from the simpler relaxation eigenspectrum. The duality is derived and proven rigorously for both discrete state Markov processes in arbitrary dimension and effectively one-dimensional diffusion processes, whereas we also discuss extensions to more complex scenarios. We apply our theory to a simple discrete-state protein folding model and to the Ornstein-Uhlenbeck process, for which we obtain the exact first passage time distribution analytically in terms of a Newton series of determinants of almost triangular matrices.
description: 28 pages, 6 figures
Mixed-dimensional coupled finite elements in FEniCS
Creators: name: Catty, Cécile Daversin
name: Rognes, Marie E.
Publisher: name: Zenodo
Year: 2019

description: Talk presented by Cécile Daversin-Catty at the 2019 ENUMATH conference (Minisymposium 25 : Discretizations of mixed-dimensional PDEs), Egmond aan Zee, The Netherlands on October 3 2019. Abstract : Mixed-dimensional partial differential equations (PDEs) are equations coupling unknown fields defined over domains of differing topological dimension. Such mixed-dimensional PDEs naturally arise in a wide range of fields including geology, bio-medicine, and fracture mechanics. Mixed-dimensional models can also be used to impose non-standard conditions over a subspace of lower dimension such as a part of the boundary or an interface between two domains, through a Lagrange multiplier. Finite element discretizations of mixed-dimensional PDEs involve nested meshes of heterogeneous topological dimension. The assembly of such systems is non-standard and non-trivial especially with regard to the terms involved in the interactions between the different domains. In other words, automated solution of mixed-dimensional PDEs requires the design of both generic high level software abstractions and lower level algorithms. The FEniCS project aims at automating the numerical solution of mathematical models based on PDEs using finite element methods, and is organized as an open source collection of software components. A core feature is a high-level domain-specific language for finite element spaces and variational forms close to mathematical syntax. While external FEniCS-based packages have been developed for simulating mixed-dimensional problems, there is an important need for embedding these features as an intrinsic part of the FEniCS library. We introduce an automated framework dedicated to mixed-dimensional problems addressing this gap, which has already been used with diverse applications ranging from reservoir simulations to ion concentration dynamics models. This talk gives an overview of the abstractions and algorithms involved. The introduced tools are illustrated by concrete examples of applications highlighting their relevance for model in biomedicine in general, with a focus on circulation, flow and exchange of tissue fluid in the brain.
Unconditional preparation of nonclassical states via linear-and-quadratic optomechanics
Creators: name: Brunelli, Matteo
name: Houhou, Oussama
name: Moore, Darren W.
name: Nunnenkamp, Andreas
name: Paternostro, Mauro
name: Ferraro, Alessandro
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Reservoir engineering enables the robust preparation of pure quantum states in noisy environments. We show how a new family of quantum states of a mechanical oscillator can be stabilized in a cavity that is parametrically coupled to both the mechanical displacement and the displacement squared. The cavity is driven with three tones, on the red sideband, on the cavity resonance and on the second blue sideband. The states so stabilized are (squeezed and displaced) superpositions of a finite number of phonons. They show the unique feature of encompassing two prototypes of nonclassicality for bosonic systems: by adjusting the strength of the drives, one can in fact move from a single-phonon- to a Schrodinger-cat-like state. The scheme is deterministic, supersedes the need for measurement-and-feedback loops and does not require initialization of the oscillator to the ground state. As such, it enables the unconditional preparation of nonclassical states of a macroscopic object.
description: 13 pages, 9 figures. Accepted version
Approximate Compilation of Constraints into Multivalued Decision Diagrams
Creators: name: Hadzic, Tarik
name: Hooker, John N.
name: O'Sullivan, Barry
name: Tiedemann, Peter
Publisher: name: Carnegie Mellon University
Year: 1983
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: We present an incremental refinement algorithm for approximate compilation of constraint satisfaction models into multivalued decision diagrams (MDDs). The algorithm uses a vertex splitting operation that relies on detection of equivalent paths in the MDD. Although the algorithm is quite general, it can be adapted to exploit constraint structure by specializing the path equivalence test to particular constraints.We show how to modify the algorithm in a principled way to obtain an approximate MDD when the exact MDD is too large for practical purposes. This is done by replacing the equivalence test with a constraint-specific measure of distance. We demonstrate the value of the approach for approximate and exact MDD compilation and evaluate its benefits in one of the main MDD application domains, interactive configuration.
title: Order Flow Segmentation, Liquidity and Price Discovery: The Role of Latency Delays
Creators: name: Brolley, Michael
name: Cimon, David A.
Publisher: name: Bank of Canada
Year: 2018

description: Latency delays—known as “speed bumps”—are an intentional slowing of order flow by exchanges. Supporters contend that delays protect market makers from high-frequency arbitrage, while opponents warn that delays promote “quote fading” by market makers. We construct a model of informed trading in a fragmented market, where one market operates a conventional order book and the other imposes a latency delay on market orders. We show that informed investors migrate to the conventional exchange, widening the quoted spread, while the quoted spread narrows at the delayed exchange. The overall market quality impact depends on the relative concentration of speculators who may become informed. If speculators are few relative to liquidity traders, total welfare falls; with relatively more speculators, total welfare rises.
description: Les bourses ralentissent volontairement les flux d’exécution des ordres en y introduisant des délais de traitement ou « ralentisseurs ». Les partisans de ce mécanisme avancent que celui-ci protège les teneurs de marché contre l’arbitrage de place pratiqué par les opérateurs à haute fréquence; leurs détracteurs, eux, font valoir que ces délais favorisent l’effacement des cours (quote fading) auquel les teneurs de marché peuvent se livrer. Nous construisons un modèle faisant intervenir sur un marché fragmenté des opérateurs informés avec, d’un côté, une bourse où l’on gère un carnet d’ordres conventionnel et, de l’autre, une bourse qui introduit des délais dans le traitement des ordres de marché. Nous montrons que les investisseurs informés se tournent vers la bourse conventionnelle, ce qui a pour effet de creuser les écarts acheteur-vendeur, alors que ces écarts se rétrécissent sur la bourse où des délais de traitement sont introduits. L’impact de ce phénomène sur la qualité d’ensemble du marché dépend de la concentration relative de spéculateurs qui pourraient accéder à une meilleure information. Si les spéculateurs sont peu nombreux par rapport au nombre d’opérateurs en quête de liquidité, le bien-être global diminue; il augmente lorsque les spéculateurs sont relativement plus nombreux.
Spontaneous emission spectrum of a two-level atom in a very high Q cavity
Creators: name: Auffèves, Alexia
name: Besga, Benjamin
name: Gérard, Jean-Michel
name: Poizat, Jean-Philippe
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we consider an initially excited two-level system coupled to a monomode cavity, and compute exact expressions for the spectra spontaneously emitted by each system in the general case where they have arbitrary linewidths and frequencies. Our method is based on the fact that this problem has an easily solvable classical counterpart, which provides a clear interpretation of the evidenced phenomena. We show that if the cavity linewidth is much lower than the atomic linewidth, photons are emitted at the cavity frequency, even if the atom and the cavity are strongly detuned. We also study the links between the spontaneous emission spectra and the fluorescence spectra emitted when the atom is driven by a classical field of tunable frequency.
description: 21 pages, 5 figures
title: State Correlation and Forecasting: A Bayesian Approach Using Unobserved Components Models
Creators: name: Uzeda Garcia, Luis Henrique
Publisher: name: Bank of Canada
Year: 2018

description: Implications for signal extraction from specifying unobserved components (UC) models with correlated or orthogonal innovations have been well investigated. In contrast, the forecasting implications of specifying UC models with different state correlation structures are less well understood. This paper attempts to address this gap in light of the recent resurgence of studies adopting UC models for forecasting purposes. Four correlation structures for errors are entertained: orthogonal, correlated, perfectly correlated innovations, and a new approach that combines features from two contrasting cases, namely, orthogonal and perfectly correlated innovations. Parameter space restrictions associated with different correlation structures and their connection with forecasting are discussed within a Bayesian framework. As perfectly correlated innovations reduce the covariance matrix rank, a Markov Chain Monte Carlo sampler, which builds upon properties of Toeplitz matrices and recent advances in precision-based algorithms, is developed. Our results for several measures of U.S. inflation indicate that the correlation structure between state variables has important implications for forecasting performance as well as estimates of trend inflation.
description: Au regard de l’extraction des signaux, les implications de la spécification de modèles à composantes non observées avec innovations corrélées ou orthogonales ont été largement analysées. Par contraste, s’agissant des prévisions, les implications de modèles à composantes non observées avec différentes structures de corrélation des variables d’état sont moins bien comprises. Dans le présent article, nous tentons de combler cette lacune, à la lumière de la récente résurgence d’études qui adoptent des modèles à composantes non observées afin d’établir des prévisions. Nous considérons quatre structures de corrélation entre les innovations : orthogonales, corrélées et parfaitement corrélées ainsi qu’une nouvelle approche qui combine des éléments de deux structures très différentes, à savoir les innovations orthogonales et parfaitement corrélées. Nous analysons, dans un cadre bayésien, les restrictions de l’espace de paramètres associées à différentes structures de corrélation et leurs liens avec les prévisions. Comme les innovations parfaitement corrélées réduisent le rang de la matrice de covariance, nous développons un algorithme d’échantillonnage de Monte-Carlo par chaînes de Markov qui se fonde sur les propriétés des matrices de Toeplitz et les récentes avancées dans le domaine des algorithmes de précision. Selon nos résultats de plusieurs mesures de l’inflation aux États-Unis, la structure de corrélation entre les variables d’état a d’importantes implications pour la qualité des prévisions et les estimations de l’inflation tendancielle.
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome III, Cart. 187 (11 H 72), f. 0037v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome III, Archives départementales de la Côte-d'Or, Cart. 187 (11 H 72), f. 0037v, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome III, Archives départementales de la Côte-d'Or, Cart. 187 (11 H 72), f. 0037v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Appropriate Indicators of Monetary Policy
Creators: name: Meltzer, Allan
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: One of the most difficult problems in economic policy-making is learning to read the content of current policy. Each of us has probably looked at the sharp peaks or troughs in a time series ot interest rates, the growth rate of money, the index of industrial production or some other measure and wondered why we had so much difficulty interpreting the changes at the time they occurred. Errors of judgment that become apparent with hindsight result frequently from a failure to interpret correctly changes that have already occurred or that are likely to occur because of policy actions already taken. Unaware of the future effect of current or previous actions, policy makers delay action too long, change too abruptly or too much.
title: Did U.S. Consumers Respond to the 2014–2015 Oil Price Shock? Evidence from the Consumer Expenditure Survey
Creators: name: Alexander, Patrick
name: Poirier, Louis
Publisher: name: Bank of Canada
Year: 2018

description: The impact of oil price shocks on the U.S. economy is a topic of considerable debate. In this paper, we examine the response of U.S. consumers to the 2014–2015 negative oil price shock using representative survey data from the Consumer Expenditure Survey. We propose a difference-in-difference identification strategy based on two factors, vehicle ownership and gasoline reliance, which generate variation in exposure to oil price shocks across consumers. Our findings suggest that exposed consumers significantly increased their spending relative to non-exposed consumers when oil prices fell, and that the average marginal propensity to consume out of gasoline savings was above 1. Across products, we find that consumers increased spending especially on transportation goods and non-essential items.
description: L’incidence des chocs des prix du pétrole sur l’économie américaine continue de provoquer de vifs débats parmi les spécialistes. Dans cette étude, nous examinons la réaction des consommateurs américains au choc négatif des prix du pétrole de 2014- 2015, au moyen de données représentatives issues du Consumer Expenditure Survey. Nous proposons une stratégie d’identification par la méthode des doubles différences qui repose sur deux facteurs – la possession d’un véhicule automobile et la dépendance à l’égard de l’essence –, lesquels induisent une variation de l’exposition aux chocs des prix du pétrole parmi les consommateurs. Les résultats obtenus portent à croire que lorsque les prix du pétrole ont chuté, les consommateurs exposés à ce choc ont augmenté sensiblement leurs dépenses par rapport à ceux qui n’y étaient pas exposés, de sorte que la propension marginale à consommer moyenne liée aux économies réalisées sur le prix de l’essence était supérieure à 1. En ce qui a trait aux produits achetés, nous constatons que les hausses de dépenses étaient surtout concentrées dans les biens liés au transport et les biens non essentiels.
Anomalies in $b \to s$ transitions and dark matter
Creators: name: Vicente, Avelino
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Since 2013, the LHCb collaboration has reported on the measurement of several observables associated to $b \to s$ transitions, finding various deviations from their predicted values in the Standard Model. These include a set of deviations in branching ratios and angular observables, as well as in the observables $R_K$ and $R_{K^\ast}$, specially built to test the possible violation of Lepton Flavor Universality. Even though these tantalizing hints are not conclusive yet, the $b \to s$ anomalies have gained considerable attention in the flavor community. Here we review New Physics models that address these anomalies and explore their possible connection to the dark matter of the Universe. After discussing some of the ideas introduced in these works and classifying the proposed models, two selected examples are presented in detail in order to illustrate the potential interplay between these two areas of current particle physics.
description: 23 pages, 6 figures. Invited Review for the special issue "New Physics Landmarks: Dark Matter and Neutrino Masses" for Advances in High Energy Physics; v2: minor changes, added references; v3: minor changes, matches published version; v4: added reference
Lynx D3.5 Initial platform prototype
Creators: name: Maganza, Filippo
Publisher: name: Zenodo
Year: 2019
Subjects: initial Lynx platform prototype

description: This Lynx deliverable describes the work carried out during T3.5 Services/platform integration and focuses on two different problems that we are currently dealing with: The integration of the microservices developed in WP3 with the basic platform implemented in WP1. The integration of the Lynx platform with the use case applications. With regards to the first point, two important internal milestones have been achieved: The format for representing documents and annotations has been defined, this is the NLP Interchange Format (NIF). Using this format, we are now able to integrate enriched documents in the LKG. Most of the enrichment microservices are now able to process NIF, hence they can be easily plugged in and out of the workflows designed in WP4. As for the second point, this document tackles the problem of long-running REST services, and suggests several strategies that can be adopted in such situations to develop a fault-tolerant system. These strategies will be used for the realisation of both the Contract Analysis and the Geothermal Project Analysis pilot use cases. The Lynx platform prototype is currently deployed on a PaaS Openshift instance and is remotely accessible through the following URL: https://alp-api-88-staging-int.cloud.itandtel.at. Moreover, the services that compose the platform prototype can now be tested, their OpenAPI descriptions are available at this link: http://lynx-project.eu/doc/api/.
Approaches to Risk Management: A Critique
Creators: name: Lave, Lester B.
Publisher: name: Carnegie Mellon University
Year: 1979
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: Many types of hazards confront individuals, families, communities, businesses, and nations. Individuals face immediate danger from accidents and acute disease. They face longer term danger in the form of chronic disease. Financial hazards loom in the form of unemployment, assets becoming worthless, large liabilities emerging, expenses for housing or children's education, and the termination of earned income at retirement. . Should an unfortunate event occur, such as a financial loss or severe injury, the enjoyment of life is diminished. Indeed, happiness can be compromised simply by the prospect that such an unfortunate event may occur. Risk management attempts not only to mitigate the effects of some unfortunate event, but to prevent its occurrence.
title: Can Media and Text Analytics Provide Insights into Labour Market Conditions in China?
Creators: name: Bailliu, Jeannine
name: Xinfen Han
name: Kruger, Mark
name: Liu, Yu-Hsien
name: Thanabalasingam, Sri
Publisher: name: Bank of Canada
Year: 2018

description: The official Chinese labour market indicators have been seen as problematic, given their small cyclical movement and their only-partial capture of the labour force. In our paper, we build a monthly Chinese labour market conditions index (LMCI) using text analytics applied to mainland Chinese-language newspapers over the period from 2003 to 2017. We use a supervised machine learning approach by training a support vector machine classification model. The information content and the forecast ability of our LMCI are tested against official labour market activity measures in wage and credit growth estimations. Surprisingly, one of our findings is that the much-maligned official labour market indicators do contain information. However, their information content is not robust and, in many cases, our LMCI can provide forecasts that are significantly superior. Moreover, regional disaggregation of the LMCI illustrates that labour conditions in the export-oriented coastal region are sensitive to export growth, while those in inland regions are not. This suggests that text analytics can, indeed, be used to extract useful labour market information from Chinese newspaper articles.
description: Les indicateurs officiels du marché du travail chinois sont considérés comme problématiques, en raison de leurs faibles fluctuations cycliques et du fait qu’ils ne rendent compte qu’en partie de la population active. Nous établissons un indice mensuel des conditions du marché du travail pour la Chine en recourant à l’analyse textuelle de journaux en chinois publiés sur le continent de 2003 à 2017. Nous employons une technique d’apprentissage automatique supervisé en entraînant un modèle de classification fondé sur les séparateurs à vaste marge. La teneur informative et le pouvoir prédictif de l’indice sont testés au regard de mesures officielles de l’activité sur le marché du travail dans le cadre d’estimations de la croissance des salaires et du crédit. Parmi les résultats de notre étude, il apparaît, étonnamment, que les indicateurs officiels du marché du travail, quoique fortement décriés, contiennent bel et bien de l’information. Leur teneur informative n’est toutefois pas robuste et, dans bien des cas, notre indice des conditions du marché du travail peut fournir des prévisions largement supérieures. Par ailleurs, la décomposition régionale de l’indice montre que les conditions sur le marché du travail dans la région côtière axée sur l’exportation sont sensibles à la croissance des exportations, tandis que les conditions dans les régions intérieures ne le sont pas. Ce constat donne à penser que l’analyse textuelle peut, effectivement, servir à extraire des articles de journaux publiés en Chine des données utiles sur le marché du travail de ce pays.
Fujita-type freeness for quasi-log canonical curves and surfaces
Creators: name: Fujino, Osamu
name: Liu, Haidong
Publisher: name: arXiv
Year: 2018
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: Primary 14C20, Secondary 14E30

description: We prove Fujita-type basepoint-freeness for projective quasi-log canonical curves and surfaces.
description: 11 pages, v2: very minor revision, v3: revision following the referee's comments, we slightly changed the statement of Conjecture 1.2
Soft-gluon resummation for Higgs differential distributions at the Large Hadron Collider
Creators: name: Bozzi, Giuseppe
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the transverse-momentum (q_T) and rapidity (y) distributions of the Higgs boson in perturbative QCD, including the most advanced theoretical information presently available: fixed-order perturbation theory at Next-to-Leading Order (NLO) in the large-q_T region (q_T ~ M_H, being M_H the Higgs mass), and soft-gluon resummation at the Next-to-Next-to-Leading Logarithmic accuracy (NNLL) in the small-q_T region (q_T << M_H). We present numerical results for the doubly-differential (q_T and y) cross section for the production of a Standard Model Higgs boson at the Large Hadron Collider (LHC).
description: Submitted for the SUSY07 proceedings, 4 pages, LaTeX, 4 PostScript figures
Top Quark Production Cross Section
Creators: name: Laenen, E.
name: Smith, J.
name: van Neerven, W. L.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The production rate for top quarks at the Fermilab Tevatron is presented using the exact order $α_s^3$ corrected cross section and the resummation of the leading soft gluon corrections in all orders of perturbation theory.
description: preprint FERMILAB-Pub-93/270-T, ITP-SB-93-55, THU-93/23, Latex 9 pages, 8 postscript figures, uuencoded and appended at end of file
BUXORO VILOYATI O'TLOQI-ALLYUVIAL TUPROQLARI UNUMDORLIGIGA TAKRORIY EKIN TURLARINING TA'SIRI
Creators: name: Turayev, Ulug'bek
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada Buxoro viloyati o‘tloqi-allyuvial tuproqlari unumdorligi (tuproq agregatlarini hosil qilish, hajmiy massasi, g’ovakligi, suv o‘tkazuvchanligi) ga takroriy ekinlarning ta’siri bo’yicha o‘tkazilgan tadqiqot natijalari keltirilgan.
Multiplicativity of the idempotent splittings of the Burnside ring and the G-sphere spectrum
Creators: name: Böhme, Benjamin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Algebraic Topology (math.AT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 55P91 (Primary), 55P43, 55Q91, 55S91, 19A22 (Secondary)

description: We provide a complete characterization of the equivariant commutative ring structures of all the factors in the idempotent splitting of the G-equivariant sphere spectrum, including their Hill-Hopkins-Ravenel norms, where G is any finite group. Our results describe explicitly how these structures depend on the subgroup lattice and conjugation in G. Algebraically, our analysis characterizes the multiplicative transfers on the localization of the Burnside ring of G at any idempotent element, which is of independent interest to group theorists. As an application, we obtain an explicit description of the incomplete sets of norm functors which are present in the idempotent splitting of the equivariant stable homotopy category.
description: 36 pages. v2: Slightly simpler (but equivalent) reformulation of main theorem. Revisions in response to my PhD committee's report and a referee report. v3: Final version, to appear in "Advances in Mathematics"
Applications of Environmental Valuation for Determining Externality Costs
Creators: name: H. Scott  Matthews
name: Lave, Lester B
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: Analyzing the effectiveness of environmental programs and regulations requires comparing the costs and benefits of reducing different pollutants or further abatement. To make useful comparisons, the various benefits from reduced pollution must be translated into dollars. Unfortunately, estimating the dollar value of environmental damages is complicated, controversial, and generally uncertain. Often these estimates have been misused. This paper identifies the need for benefit estimates, shows how they are constructed, and demonstrates how they can be used to improve environmental policy analysis.
Parameterization studies of the properties of the X-ray dips for Low Mass X-ray binary X1916-053
Creators: name: Hu, Chin-Ping
name: Chou, Yi
name: Chung, Yi-Ying
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The ultra-compact Low Mass X-ray Binary (LMXB) X1916-053, composed of a neutron star and a semi-degenerated white dwarf, exhibits periodic X-ray dips with variable width and depth. We have developed new methods to parameterize the dip to systematically study its variations. This helps to further understand binary and accretion disk behaviors. The RXTE 1998 observations clearly show a 4.87d periodic variation of the dip width. This is probably due to the nodal precession of the accretion disk, although there are no significant sidebands in the spectrum from the epoch folding search. From the negative superhump model (Larwood et. al. 1996), the mass ratio can be estimated as q = 0.045. Combined with more than 24 years of historical data, we found an orbital period derivative of $\dot{P}_{orb}/P_{orb}=(1.62 \pm 0.48)\times 10^{-7} yr^{-1}$ and established a quadratic ephemeris for the X-ray dips. The period derivative seems inconsistent with the prediction of the standard model of binary orbital evolution proposed by Rappaport et. al. (1987). On the other hand, the radiation-driven model (Tavani et. al. 1991) may properly interpret the period derivative even though the large mass outflow predicted by this model has never been observed in this system. With the best ephemeris, we obtained that the standard deviation of primary dips are smaller than that of secondary dips. This means that the primary dips are more stable than the secondary dips. Thus, we conclude that the primary dips of X1916-053 occur from the bulge at the rim instead of the ring of the disk proposed by Frank et. al. (1987).
description: accepted by ApJ
Minimal dissipation in processes far from equilibrium
Creators: name: Bonança, Marcus V. S.
name: Deffner, Sebastian
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A central goal of thermodynamics is to identify optimal processes during which the least amount of energy is dissipated into the environment. Generally, even for simple systems, such as the parametric harmonic oscillator, optimal control strategies are mathematically involved, and contain peculiar and counter-intuitive features. We show that optimal driving protocols determined by means of linear response theory exhibit the same step and $δ$-peak like structures that were previously found from solving the full optimal control problem. However, our method is significantly less involved, since only a minimum of a quadratic form has to be determined. In addition, our findings suggest that optimal protocols from linear response theory are applicable far outside their actual range of validity.
description: 5 pages, 4 figures, suppl. mater.: 3 pages, 4 figures
On the Parton Interpretation of Quark Fragmentation into Hadrons with Different Spins
Creators: name: Anselm, A.
name: Anselmino, M.
name: Murgia, F.
name: Ryskin, M. G.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the spin density matrix of the hadron $h$ created via quark fragmentation in the process $e^-e^+ \to q\bar q \to h + X$. In the case of $h=Λ$ the experimental data could possibly elucidate the problem of $s$-quark contribution to the spin of the $Λ$-hyperon, to be compared with the case of the proton (``spin crisis''). Generally we find that for hadrons with spin 1/2 the parton description, using only probabilities, works much better than for vector particles, since in the former case the non diagonal matrix elements of the hadron spin density matrix are suppressed by a small factor $p_T/(z\sqrt s)$, where $p_T$ is the hadron transverse momentum inside the jet.
description: 10 pages (no figures), Plain TEX , report DFTT 48/93
Is the Wheeler -- DeWitt equation more fundamental than the Schrödinger equation?
Creators: name: Shestakova, T. P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Wheeler -- DeWitt equation was proposed 50 years ago and until now it is the cornerstone of most approaches to quantization of gravity. One can find in the literature the opinion that the Wheeler -- DeWitt equation is even more fundamental than the basic equation of quantum theory, the Schrödinger equation. We still should remember that we are in the situation when no observational data can confirm or reject the fundamental status of the Wheeler -- DeWitt equation, so we can give just indirect arguments in favor of or against it, grounded on mathematical consistency and physical relevance. I shall present the analysis of the situation and comparison of the standard Wheeler -- DeWitt approach with the extended phase space approach to quantization of gravity. In my analysis I suppose, firstly, that a future quantum theory of gravity must be applicable to all phenomena from the early Universe to quantum effects in strong gravitational fields, in the latter case the state of the observer may appear to be significant. Secondly, I suppose that the equation for the wave function of the Universe must not be postulated but derived by means of a mathematically consistent procedure. One should take into account features of gravity, namely, non-trivial spacetime topology and possible absence of asymptotic states. The Schrödinger equation has been derived early for cosmological models with a finite number of degrees of freedom, and just recently it has been found for the spherically symmetric model which is a simplest model with an infinite number of degrees of freedom. The structure of the Schrödinger equation and its general solution appears to be very similar in these cases. The obtained results give grounds to say that the Schrödinger equation retains its fundamental meaning in constructing quantum theory of gravity.
description: 13 pages, no figures, the extended version of the talk at the 3rd International Conference on Particle Physics and Astrophysics, Moscow, 2-5 October 2017
title: Southeast Asian Refugees in Western Massachusetts: Seen but Not Heard
Creators: name: Hafner, James A.
name: Muldoon, Jeannine
name: Brewer, Elizabeth
Publisher: name: University of Massachusetts Amherst
Year: 1989
Subjects: subject: Southeast Asian refugees
subject: Indochinese Needs Assessment Project (IRNAP)
subject: resettlement and adjustment
subject: Social and Cultural Anthropology

description: Assisted by Kathleen McGraw and Lucy Nhiem Hong Nguyen
description: The United States has a long and valued tradition of receiving people from other lands as a result of social and political turmoil. This policy has been reaffirmed frequently in the last quarter century with the arrival of refugees from such geographically diverse locations as Eastern Europe, Cuba, Southeast Asia, and Central America. Perhaps, Southeast Asians have experienced greater national and personal tragedy than any other group of refugees arriving in this country in recent memory. It is specifically this population and their resettlement and adjustment to life in Western Massachusetts which is the subject of this report. These issues are discussed in six separate sections. The introduction provides a general background for Southeast Asian refugee resettlement and the goals and methods of the IRNA project; Section II presents a brief outline of refugee resettlement at the national, state and local levels with more specific details on the geographic and demographic aspects of this population in Western Massachusetts. An assessment of refugee adjustment and needs is profiled in Section III followed by evaluations of these general issues from the perspective of service providers and community-level refugee resettlement organizations in Section IV. Policy and Program Implications and concluding remarks are provided in the final section.