cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The contribution of medium-modified color flow to jet quenching
Creators: name: Beraudo, A.
name: Milhano, J. G.
name: Wiedemann, U. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Multiple interactions between parton showers and the surrounding QCD matter are expected to underlie the strong medium-modifications of jet observables in ultra-relativistic heavy ion collisions at RHIC and at the LHC. Here, we note that such jet-medium interactions alter generically and characteristically the color correlations in the parton shower. We characterize these effects in a color-differential calculation of the medium-induced gluon radiation spectrum to first and second order in opacity. By interfacing simple branching histories of medium-modified color flow with the Lund hadronization model, we analyze how the medium modification of color correlations can affect the distribution of hadronic fragments in jets. Importantly, we observe that jet-medium interactions give rise to the medium-induced color decoherence of gluons from the parton shower. Since hadronization respects color flow and since each color singlet in a parton shower is hadronized separately, this medium-induced color decoherence leaves characteristic signatures in the jet fragmentation pattern. In particular, it can contribute to the quenching of leading hadron spectra. Moreover, it can increase strongly the yield of soft hadronic fragments from a jet, while the distribution of more energetic hadrons follows naturally the shape of a vacuum-like fragmentation pattern of lower total energy.
The interplay of internal and external processes in the buildup of disk galaxies: thick-disk star formation histories in AURIGA simulations
Creators: name: Pinna, Francesca
name: Walo-Martín, Daniel
name: Grand, Robert J. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent integral-field spectroscopy observations have revealed that thick- and thin-disk star-formation histories are regulated by the interplay of internal and external processes. We analyze stellar-population properties of 24 spiral galaxies from the AURIGA zoom-in cosmological simulations, to offer a more in-depth interpretation of observable properties. We present edge-on maps of stellar age, metallicity and [Mg/Fe] abundance, and we extract the star-formation and chemical-evolution histories of thin and thick disks. Both show signs of the interplay between internal chemical enrichment and gas and star accretion. Thick disks show particularly complex stellar populations, including an in-situ component, formed from both slowly enriched and accreted more pristine gas, and an additional significant fraction of ex-situ stars.
description: 3 pages, one figure, Proceedings IAU Symposium S373
Modeling Translation in Protein Synthesis with TASEP: A Tutorial and Recent Developments
Creators: name: Zia, R. K. P.
name: Dong, J. J.
name: Schmittmann, B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The phenomenon of protein synthesis has been modeled in terms of totally asymmetric simple exclusion processes (TASEP) since 1968. In this article, we provide a tutorial of the biological and mathematical aspects of this approach. We also summarize several new results, concerned with limited resources in the cell and simple estimates for the current (protein production rate) of a TASEP with inhomogeneous hopping rates, reflecting the characteristics of real genes.
description: 25 pages, 7 figures
Factors governing interactions among species in a complex marine ecosystem
Creators: name: Wood, Spencer A.
Publisher: name: University of British Columbia
Year: 2009

description: Species interactions take a variety of forms, from weak to strong, and negative to positive, each with unique consequences for local community structure. These interactions are contingent on biotic, abiotic, and scale-dependent variables, and this makes them difficult to predict. In this dissertation I describe three empirical intertidal studies aimed at understanding the dependency of species interactions on environmental and ecological context. First I present a test of the relative importance of six variables known to affect the sign and strength of species interactions, using perturbation experiments across a range of habitats in New Zealand and North America. I observe that species interactions in communities are typically weak, with a balance of positive and negative effects. Interaction strengths are related to traits of species, such as body size and trophic level, but are relatively insensitive to environmental conditions. The second study has two parts. First, I examine the prevalence of nonlinear species interactions, using experimental gradients in abundance of three focal species. Then I assess how well linear and nonlinear interaction coefficients, estimated in the first experiment, predict the outcome of a second set of perturbations. I find that interactions are typically linear across focal species densities, and that predictions regarding the outcome of short-term perturbations are not significantly improved by nonlinear estimates. Lastly, I investigate the relative impacts of biotic interactions, abiotic stress, and the interactive effects of the two factors, on community diversity. The results demonstrate that although environmental stress alters certain species interactions, it does not change the overall distribution of weak and strong effects. This is, in part, because biotic processes mitigate the effects of abiotic stress and allow the community to maintain its functioning even under harsh conditions. Together the results demonstrate how empirically-based interaction coefficients can be used to explain species diversity and the responses of ecosystems to environmental change. Interactions are directly related to population density, relatively insensitive to environment conditions, and strongly tied to species' allometric properties. This exhibits the potential for future research to predict ecosystem dynamics without detailed information on communities.
Practical Quantum Bit Commitment Protocol
Creators: name: Danan, Ariel
name: Vaidman, Lev
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A quantum protocol for bit commitment the security of which is based on technological limitations on nondemolition measurements and long-term quantum memory is presented.
description: Quantum Inf. Process. (2011)
D3.6 Summary report of outcomes of the second call for services
Creators: name: Strobel, Anneli
name: Biebow, Nicole
Publisher: name: Zenodo
Year: 2023
Subjects: Research prioritisation
Seed money
Service Contracts
Call for Services

description: One of the objectives of EU-PolarNet 2 is to prioritise and specify the key societally relevant Polar research themes, which have been defined in the European Polar Research Programme (EPRP), the EU-PolarNet White Papers and in European Polar strategies. With launching calls for services, EU-PolarNet 2 seeks support from the European Polar Community to further develop the research themes identified in the EPRP into achievable research projects that could be funded on a national, European or international level. For this purpose, EU-PolarNet 2 opened three Calls for Services for all six research needs of the European Polar Research Programme: Better understanding of climate change in the Polar Regions and its links to lower latitudes Informed weather and climate action Resilient socio-ecological systems Prospering communities in the Arctic Challenges and Opportunities for Polar Operations Inclusive creation, access and usage of know ledge This deliverable reports on the second call for services, which asked to formulate achievable research activities related to one of the key questions/sub-topics of following two Research Needs of the EPRP: Resilient socio-ecological systems Challenges and Opportunities for Polar Operations
UV-Tagung "Museumsneubauten in Köln und Mönchengladbach Besichtigungen und Diskussionen"
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 41 Nr. 3 (1988): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Comparison of Hutterite and non-Hutterite children's cognitive abilities
Creators: name: Fitch, Angeline C.
Publisher: name: University of Calgary
Year: 1978
Subjects: subject: BF 723 C5 F58 1978 Microfiche
subject: Cognition in children
subject: Hutterite Brethren

description: Bibliography: p. 84-89.
Doctoral thesis recital (saxophone)
Creators: name: Newsome, Ben
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: Jazz--2011-2020
Saxophone with jazz ensemble

description: The way you look tonight : (1936) / Jerome Kern ; arr. Benjamin Newsome -- Theme for Ernie : (1958) / Fred Lacey ; arr. Joe Lovano -- Willow weep for me : (1932) / Ann Ronnell ; arr. Dexter Gordon -- The monster and the flower : (1983) / Claudio Roditi -- It never entered my mind : (1940) / Richard Rodgers ; arr. Benjamin Newsome -- Impressions : (1960) / John Coltrane
A Hydrodynamical Approach to CMB mu-distortions
Creators: name: Pajer, Enrico
name: Zaldarriaga, Matias
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Spectral distortion of the cosmic microwave background provides a unique opportunity to probe primordial perturbations on very small scales by performing large-scale measurements. We discuss in a systematic and pedagogic way all the relevant physical phenomena involved in the production and evolution of the mu-type spectral distortion. Our main results agree with previous estimates (in particular we show that a recently found factor of 3/4 arises from relativistic corrections to the wave energy). We also discuss several subleading corrections such as adiabatic cooling and the effects of bulk viscosity, baryon loading and photon heat conduction. Finally we calculate the transfer function for mu-distortions between the end of the mu-era and now.
description: 45 pages
State-space solutions to the dynamic magnetoencephalography inverse problem using high performance computing
Creators: name: Long, Christopher J.
name: Purdon, Patrick L.
name: Temereanca, Simona
name: Desai, Neil U.
name: Hämäläinen, Matti S.
name: Brown, Emery N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Applications (stat.AP)
subject: Medical Physics (physics.med-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Determining the magnitude and location of neural sources within the brain that are responsible for generating magnetoencephalography (MEG) signals measured on the surface of the head is a challenging problem in functional neuroimaging. The number of potential sources within the brain exceeds by an order of magnitude the number of recording sites. As a consequence, the estimates for the magnitude and location of the neural sources will be ill-conditioned because of the underdetermined nature of the problem. One well-known technique designed to address this imbalance is the minimum norm estimator (MNE). This approach imposes an $L^2$ regularization constraint that serves to stabilize and condition the source parameter estimates. However, these classes of regularizer are static in time and do not consider the temporal constraints inherent to the biophysics of the MEG experiment. In this paper we propose a dynamic state-space model that accounts for both spatial and temporal correlations within and across candidate intracortical sources. In our model, the observation model is derived from the steady-state solution to Maxwell's equations while the latent model representing neural dynamics is given by a random walk process.
description: Published in at http://dx.doi.org/10.1214/11-AOAS483 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Reef-insight: A framework for reef habitat mapping with clustering methods via remote sensing
Creators: name: Barve, Saharsh
name: Webster, Jody M.
name: Chandra, Rohitash
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Environmental damage has been of much concern, particularly in coastal areas and the oceans, given climate change and the drastic effects of pollution and extreme climate events. Our present-day analytical capabilities, along with advancements in information acquisition techniques such as remote sensing, can be utilised for the management and study of coral reef ecosystems. In this paper, we present Reef-Insight, an unsupervised machine learning framework that features advanced clustering methods and remote sensing for reef habitat mapping. Our framework compares different clustering methods for reef habitat mapping using remote sensing data. We evaluate four major clustering approaches based on qualitative and visual assessments which include k-means, hierarchical clustering, Gaussian mixture model, and density-based clustering. We utilise remote sensing data featuring the One Tree Island reef in Australia's Southern Great Barrier Reef. Our results indicate that clustering methods using remote sensing data can well identify benthic and geomorphic clusters in reefs when compared with other studies. Our results indicate that Reef-Insight can generate detailed reef habitat maps outlining distinct reef habitats and has the potential to enable further insights for reef restoration projects.
A Model of Dark Matter and Energy
Creators: name: Frampton, Paul H.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Physics (physics.gen-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss a model of the universe where dark energy is replaced by electrically-charged extremely-massive dark matter. The cosmological constant has a value of the same order as the mean matter density, consistent with observations, and is obtained classically without fine-tuning.
description: 11 pages, LaTeX
The Na-O anticorrelation in horizontal branch stars. I. NGC 2808
Creators: name: Gratton, R. G.
name: Lucatello, S.
name: Carretta, E.
name: Bragaglia, A.
name: D'Orazi, V.
name: Momany, Y. Al
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Globular clusters have been recognized to host multiple stellar populations. A spectacular example of this is the massive cluster NGC2808, where multiple populations have been found along the horizontal branch (HB) and the main sequence (MS). Studies of red giants showed that this cluster appears homogeneous insofar Fe abundance is concerned, but it shows an extended anticorrelation between Na and O abundances. The Na-poor, O-rich population can be identified with the red MS, and the Na-rich, O-poor one with the blue one. This may be understood in terms of different He content, He being correlated with Na. A prediction of this scenario is that He-rich, Na-rich He-core burning stars, because they are less massive, will end up on the bluer part of the HB, while He-poor, Na-poor stars will reside on the red HB. The aim of this paper is to verify this prediction. To this purpose, we acquired high-resolution spectra of regions including strong O and Na lines in several tens of HB stars of NGC2808, sampling both the red and blue parts of the HB. We limited our analysis to those blue HB stars cooler than the gap at 11,500 K, because diffusion and radiative pressure are known to strongly modify the atmospheric composition of warmer stars. We indeed found a strict correspondence between the colour of the HB stars and their Na and O abundances: all blue HB stars are very O-poor and Na-rich. In addition, we found that while all the red HB stars are more O-rich and Na-poor than the blue ones, there is a moderate Na-O anticorrelation among them as well. This anticorrelation is in turn related to the colour of the red HB stars. These results reinforce the connection between Na and O abundances and the second parameter phenomenon, and show that there are more than three stellar populations in NGC 2808 because only a fraction of the red HB stars belong to the primordial population of this cluster.
description: Astronomy and Astrophysics, in press. 9 pages, 4 figures
Comparison of potential reinforcer ratings between slow learners and regular students
Creators: name: Serralde De Scholz, Helvia Christina
Publisher: name: University of Calgary
Year: 1976
Subjects: subject: LC 4661 S68 1975 Microfiche
subject: Slow learning children
subject: Behavior modification
subject: Reinforcement (Psychology)

description: Bibliography: p. 70-77.
A Sedentary Lifestyle and Cognitive Function
Creators: name: Arbind Kumar Choudhary
name: Sundareswaran Loganathan
name: Kuppusamy Maheshkumar
Publisher: name: Zenodo
Year: 2021
Subjects: Sedentary
cognition
mental health
dementia

description: Sedentary behaviour is hypothesized to be a potential target in its own right—the rising numbers of persons with cognitive impairment highlight the urgency to understand these risk factors better. Higher sedentary behaviour levels are associated with reduced global cognitive functioning and slower cognitive decline, especially in older persons. Neuropsychological evaluations can be categorized according to the domain of thought being tested. The domains can be considered such as Global cognition (e.g., the Mini-Mental State Examination), concentration (sustained alertness, including the ability to process information quickly), executive function (a collection of cognitive mechanisms responsible for initiating and tracking goal-oriented behaviours), memory (storing and retrieving goal-oriented behaviours), and working memory (short-term manipulation of information encountered). A sedentary activity can occur with subsequent factors such as depression, the habit of drinking and smoking, social distancing and occupation, sleep disruption, disease history, and eventually lead to cognitive impairment. Although preliminary evidence indicates that cognitive function is associated with a sedentary activity, it is still uncertain of this relationship's extent.
Localized-Diffusive and Ballistic-Diffusive Transitions in Kicked Incommensurate lattice
Creators: name: Yamada, Hiroaki S.
name: Ikeda, Kensuke S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: By using the kicked Harper model, the effect of dynamical perturbations to the localized and ballistic phases in aperiodic lattice systems is investigated. The transition from the localized phase to diffusive phase via a critical sub-diffusion $t^α$($t$:time) with $0<α<1$ is observed. In addition, we first confirmed the existence of the transition from the ballistic phase to the diffusive phase via a critical super-diffusion with $1<α<2$.
description: 5 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:2107.14650
Differences in self-disclosure patterns between a group of maladjusted and a group of adjusted male adolescents
Creators: name: Paulson, Marguerite J.
Publisher: name: University of Calgary
Year: 1976
Subjects: subject: BF 724 P37 1976 Microfiche
subject: Adolescent boys
subject: Self-disclosure

description: Bibliography: p. 68-74.
The Poisson Geometry of Plancherel Formulas for Triangular Groups
Creators: name: Ercolani, Nicholas M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Symplectic Geometry (math.SG)
subject: Representation Theory (math.RT)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper we establish the existence of canonical coordinates for generic co-adjoint orbits on triangular groups. These orbits correspond to a set of full Plancherel measure on the associated dual groups. This generalizes a well-known coordinatization of co-adjoint orbits of a minimal (non-generic) type originally discovered by Flaschka. The latter had strong connections to the classical Toda lattice and its associated Poisson geometry. Our results develop connections with the Full Kostant-Toda lattice and its Poisson geometry. This leads to novel insights relating the details of Plancherel theorems for Borel Lie groups to the invariant theory for Borels and their subgroups. We also discuss some implications for the quantum integrability of the Full Kostant Toda lattice.
Indirect noise from weakly reacting inhomogeneities
Creators: name: Jain, Animesh
name: Giusti, Andrea
name: Magri, Luca
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Indirect noise is a significant contributor to aircraft engine noise, which needs to be minimized in the design of aircraft engines. Indirect noise is caused by the acceleration of flow inhomogeneities through a nozzle. High-fidelity simulations showed that some flow inhomogeneities can be chemically reacting when they leave the combustor and enter the nozzle (Giusti et al., 2019). The state-of-art models, however, are limited to chemically non-reacting (frozen) flows. In this work, first, we propose a low-order model to predict indirect noise in nozzle flows with reacting inhomogeneities. Second, we identify the physical sources of sound, which generate indirect noise via two physical mechanisms: (i) chemical reaction generates compositional perturbations, thereby adding to compositional noise; and (ii) exothermic reaction generates entropy perturbations. Third, we numerically compute the nozzle transfer functions for different frequency ranges (Helmholtz numbers) and reaction rates (Damköhler numbers) in subsonic flows with hydrogen and methane inhomogeneities. Fourth, we extend the model to supersonic flows. We find that hydrogen inhomogeneities have a larger impact to indirect noise than methane inhomogeneities. Both the Damköhler number and the Helmholtz number markedly influence the phase and magnitude of the transmitted and reflected waves, which affect the sound generation and thermoacoustic stability. This work provides a physics-based low-order model, which can open new opportunities for predicting noise emissions and instabilities in aeronautical gas turbines with multi-physics flows.
Does Land Endowment Impact Parental Educational Expectations? Evidence from Rural China
Creators: name: Zhang, Mengling
name: Chen, Zhaojiu
name: Wu, Feng
name: Zhang, Mengling
name: Chen, Zhaojiu
name: Wu, Feng
Publisher: name: Unknown
Year: 2021
Subjects: Consumer/Household Economics
Community/Rural/Urban Development
Resource/Energy Economics and Policy

description: Presentation 20332
ADI finite difference schemes for the Heston-Hull-White PDE
Creators: name: Haentjens, Tinne
name: Hout, Karel J. in 't
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computational Finance (q-fin.CP)
subject: Numerical Analysis (math.NA)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: In this paper we investigate the effectiveness of Alternating Direction Implicit (ADI) time discretization schemes in the numerical solution of the three-dimensional Heston-Hull-White partial differential equation, which is semidiscretized by applying finite difference schemes on nonuniform spatial grids. We consider the Heston-Hull-White model with arbitrary correlation factors, with time-dependent mean-reversion levels, with short and long maturities, for cases where the Feller condition is satisfied and for cases where it is not. In addition, both European-style call options and up-and-out call options are considered. It is shown through extensive tests that ADI schemes, with a proper choice of their parameters, perform very well in all situations - in terms of stability, accuracy and efficiency.
Somewhere beyond the barricade : explaining Indigenous protest in Canada
Creators: name: Repin, Nadya
Publisher: name: University of British Columbia
Year: 2009

description: Forms of Indigenous contentious action, including blockades, marches, demonstrations, building occupations and fish- and log-ins are commonplace in Canada, but understudied. The likelihood of more of these events is high given the glacial pace at which grievances are being acknowledged. This paper asks what accounts for the variation in mobilization of Indigenous groups in unconventional forms of protest - non-routine and non-institutional - often “illegal” contentious action events in advanced, industrial, settler democracies? The applicability of three social movement theories, deprivation, Resource Management Theory (RMT) and New Social Movement (NSM) theory, are examined in providing explanatory leverage on Indigenous mobilization in contentious action in Canada. An examination of two cases will outline the explanatory usefulness of these theories: the blockades at Kanehsatake in 1990 (commonly referred to as the Oka Crisis) and the conflict at Burnt Church from 1999 to 2002. It determines that deprivation, NSM, and sometimes RMT are able to provide valuable insights into specific cases and also illustrate the fact that Indigenous contentious action across Canada is not the same, they are not always driven by the same processes, goals, or identities. These theories can be useful analytical tools, but have little to offer in terms of predictive power and must be used carefully as explanatory tools. As opposed to being separate explanatory fields, they are most helpful used cooperatively rather than competitively. All of these theories must be able to take into consideration the impacts of colonialism, on resources, on deprivation and on identity, in order to retain explanatory value in the case of Indigenous peoples. Furthermore, the relationship that land has to identity formation for Indigenous peoples must be accounted for, and can be done so within NSM theory.
Roger Lauxerois, Le Bas Vivarais à l’époque romaine. Recherches sur la Cité d’Alba
Creators: name: Büchsenschütz, Olivier
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2020

description: Rezension zu: Roger Lauxerois, Le Bas Vivarais à l’époque romaine. Recherches sur la Cité d’Alba. Préfache de Marcel Le Glay. Revue archéologique de Narbonnaise, Supplément 9. De Boccard, Paris 1983. 320 Seiten, 11 Abbildungen und 7 Tafeln.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 63 Nr. 1 (1985)
Eine Standortbestimmung für die Kunstgeschichte: Datenbanksysteme als verfügbare Arbeitsinstrumente. Bericht über die International Conference on Data Bases in the Humanities and Social Sciences
Creators: name: Meles, Brigitte
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 41 Nr. 3 (1988): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
O-star mass-loss rates at low metallicity
Creators: name: Lucy, L. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Mass fluxes J are computed for the extragalactic O stars investigated by Tramper et al. (2011; TSKK). For one early-type O star, computed and observed rates agree within errors. However, for two late-type O stars, theoretical mass-loss rates underpredict observed rates by ~ 1.6 dex, far exceeding observational errors. A likely cause of the discrepancy is overestimated observed rates due to the neglect of wind-clumping. A less likely but intriguing possibility is that, in observing O stars with Z/Z_sun ~ 1/7, TSKK have serendipitously discovered an additional mass-loss mechanism not evident in the spectra of Galactic O stars with powerful radiation-driven winds. Constraints on this unknown mechanism are discussed. In establishing that the discrepancies, if real, are inescapable for purely radiation-driven winds, failed searches for high-J solutions are reported and the importance of a numerical technique that cannot spuriously create or destroy momentum stressed. The Z-dependences of the computed rates for Z/Z_sun in the interval (1/30, 2) show significant departures from a single power law, and these are attributed to curve-of-growth effects in the differentially-expanding reversing layers. The best-fitting power-law exponents range from 0.68-0.97.
description: 6 pages, 2 figures
Hermitian codes from higher degree places
Creators: name: Korchmáros, Gábor
name: Nagy, Gábor P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H55, 11T71, 11G20, 94B27

description: Matthews and Michel investigated the minimum distances in certain algebraic-geometry codes arising from a higher degree place $P$. In terms of the Weierstrass gap sequence at $P$, they proved a bound that gives an improvement on the designed minimum distance. In this paper, we consider those of such codes which are constructed from the Hermitian function field. We determine the Weierstrass gap sequence $G(P)$ where $P$ is a degree 3 place, and compute the Matthews and Michel bound with the corresponding improvement. We show more improvements using a different approach based on geometry. We also compare our results with the true values of the minimum distances of Hermitian 1-point codes, as well as with estimates due Xing and Chen.
From "Frat Row" to Wall Street: An analysis of the "cultural matching" hiring and rushing practices within the fraternity-to-firm-pipeline
Creators: name: Soong, Ashley
Publisher: name: University of Chicago
Year: 2018
Subjects: subject: University of Chicago
subject: fraternity
subject: Wall Street
subject: economic opportunities
subject: power & privilege
subject: diversity & inclusion
subject: finance recruiting

description: Despite constant scandals in the banking industry and the ever-changing cycle of economic booms and busts, trends in Wall Street recruiting have shown that young graduates from top universities are entering finance more than ever. Most studies around job recruiting focus on the hiring practices through the lenses of firms and recruiters. However, through this ethnography, I follow the recruiting experiences of 12 fraternity brothers from the University of Chicago to demonstrate the social embeddedness of the economic markets they come to be a part of creating, as well as the strong conflation of “cultural fit” with technical competence on the job. I show how fraternity brothers are able to leverage their organization’s deep alumni networks to close the information gap on the job market with their social position as a fraternity brother. Through a brief history of the fraternity, as a social institution, I demonstrate how being part of a fraternal organization uniquely positions brothers to gain access to social connections and information that are vital for entry into Wall Street. By drawing comparisons between the highly social process of fraternity recruitment and the heavy social networking in finance recruiting, I argue that fraternity life provides a central hub for social training of young finance recruits and serves as a pre-screening filter for socially adaptive individuals into finance.
A new evaluation of the $HZZ$ coupling: direct bounds on anomalous contributions and $CP$ violating effects via a new asymmetry
Creators: name: Hernández-Juárez, A. I.
name: Tavares-Velasco, G.
name: Fernández-Téllez, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The standard model (SM) one-loop contributions to the most general $H^*Z^*Z^*$ coupling are obtained via the background field method in terms of Passarino-Veltman scalar functions, from which the contributions to the $H^*ZZ$ and $HZZ^*$ couplings are obtained in terms of two $CP$-conserving $h_{1,2}^V$ and one $CP$-violating $h_3^V$ form factors ($V=H, Z$). The current CMS constraints on the $HZZ$ coupling ratios are then used to obtain bounds on the real and absorptive parts of the anomalous $HZZ$ couplings. The former are up to two orders of magnitude tighter than previous ones, whereas the latter are the first one of this kind. The effects of the absorptive parts of the $HZZ$ anomalous couplings, which have been overlooked in the past, are analyzed via the partial decay width $Γ_{H^\ast\rightarrow ZZ}$, and a significant deviation from the SM tree-level contribution is observed at low energies, though it becomes negligible at high energies. We also explore the possibility that polarized $Z$ gauge bosons are used for the study of non-SM $HZZ$ contributions via a new left-right asymmetry $\mathcal{A}_{LR}$, which is sensitive to $CP$-violating complex form factors and can be as large as the unity at most, though in a more conservative scenario it is four to five orders of magnitude larger than the SM prediction arising up to the three-loop level. The partial decay widths $Γ_{H^\ast\rightarrow Z_LZ_L}$ and $Γ_{H^\ast\rightarrow Z_RZ_R}$ are also studied in several scenarios and it is observed that the deviations from the SM can be large at high energies and increases as the energy increases. Thus, the use of polarized $Z$ gauge bosons could give hints of $CP$ violation. The Mathematica code for our analytical results and the numerical evaluation is available in our GitLab site.
description: Similar to the PRD publication
Jeannot Metzler, Johny Zimmer und Lothar Bakker, Ausgrabungen in Echternach
Creators: name: Schallmayer, Egon
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2020

description: Rezension zu: Jeannot Metzler, Johny Zimmer und Lothar Bakker, Ausgrabungen in Echternach. Mit Beiträgen von J. Bintz, E. Groessens, G. Vandenven und R. Weiller. Publication du Ministere des Affaires Culturelles et de la Ville d’Echternach, Luxembourg 1981. 2 Bände: Text und Planbeilagen. 14 und 394 Seiten, 263 Abbildungen, 10 Planbeilagen
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 66 Nr. 1 (1988)
Time-dependent forces induced by settlement of supports in continuous prestressed concrete structures
Creators: name: Kountouris, Christodoulos Loizou
Publisher: name: Engineering
Year: 1970
Subjects: subject: TA 683.9 K67 1970 Microfilm
subject: Prestressed concrete construction
subject: Concrete beams
subject: Creep of concrete

description: Bibliography: p. 54-57.
Can gravitational-wave memory help constrain binary black-hole parameters? A LISA case study
Creators: name: Gasparotto, Silvia
name: Vicente, Rodrigo
name: Blas, Diego
name: Jenkins, Alexander C.
name: Barausse, Enrico
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Besides the transient effect, the passage of a gravitational wave also causes a persistent displacement in the relative position of an interferometer's test masses through the \emph{nonlinear memory effect}. This effect is generated by the gravitational backreaction of the waves themselves, and encodes additional information about the source. In this work, we explore the implications of using this information for the parameter estimation of massive binary black holes with LISA. Based on a Fisher analysis for nonprecessing black hole binaries, our results show that the memory can help to reduce the degeneracy between the luminosity distance and the inclination for binaries observed only for a short time ($\sim$~few hours) before merger. To assess how many such short signals will be detected, we utilized state-of-the-art predictions for the population of massive black hole binaries and models for the gaps expected in the LISA data. We forecast from tens to few hundreds of binaries with observable memory, but only~$\sim \mathcal{O}(0.1)$ events in 4 years for which the memory helps to reduce the degeneracy between distance and inclination. Based on this, we conclude that the new information from the nonlinear memory, while promising for testing general relativity in the strong field regime, has probably a limited impact on further constraining the uncertainty on massive black hole binary parameters with LISA.
description: 16 pages, comments are welcomed
Molecular gas and star formation in nearby starburst galaxy mergers
Creators: name: He, Hao
name: Bottrell, Connor
name: Wilson, Christine
name: Moreno, Jorge
name: Burkhart, Blakesley
name: Hayward, Christopher C.
name: Hernquist, Lars
name: Twum, Angela
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We employ the Feedback In Realistic Environments (FIRE-2) physics model to study how the properties of giant molecular clouds (GMCs) evolve during galaxy mergers. We conduct a pixel-by-pixel analysis of molecular gas properties in both the simulated control galaxies and galaxy major mergers. The simulated GMC-pixels in the control galaxies follow a similar trend in a diagram of velocity dispersion ($σ_v$) versus gas surface density ($Σ_{\mathrm{mol}}$) to the one observed in local spiral galaxies in the Physics at High Angular resolution in Nearby GalaxieS (PHANGS) survey. For GMC-pixels in simulated mergers, we see a significant increase of factor of 5 - 10 in both $Σ_{\mathrm{mol}}$ and $σ_v$, which puts these pixels above the trend of PHANGS galaxies in the $σ_v$ vs $Σ_{\mathrm{mol}}$ diagram. This deviation may indicate that GMCs in the simulated mergers are much less gravitationally bound compared with simulated control galaxies with virial parameter ($α_{\mathrm{vir}}$) reaching 10 - 100. Furthermore, we find that the increase in $α_{\mathrm{vir}}$ happens at the same time as the increase in global star formation rate (SFR), which suggests stellar feedback is responsible for dispersing the gas. We also find that the gas depletion time is significantly lower for high $α_{\mathrm{vir}}$ GMCs during a starburst event. This is in contrast to the simple physical picture that low $α_{\mathrm{vir}}$ GMCs are easier to collapse and form stars on shorter depletion times. This might suggest that some other physical mechanisms besides self-gravity are helping the GMCs in starbursting mergers collapse and form stars.
description: 22 pages, 11 figures. Accepted to ApJ. Link to animation updated
The Impact of Minimum Wage Shocks on Low-Skilled Workers in the United States: Evidence from the H-2A Visa Agricultural Guestworker Program
Creators: name: Rutledge, Zachariah
name: Richards, Timothy J.
name: Martin, Phillip
name: Castillo, Marcelo J.
name: Rutledge, Zachariah
name: Richards, Timothy J.
name: Martin, Phillip
name: Castillo, Marcelo J.
Publisher: name: Unknown
Year: 2021
Subjects: Agricultural and Food Policy
Community/Rural/Urban Development
Production Economics

description: Presentation 20335
Zum Neufund einer weiblichen Statuette bei den Rettungsgrabungen an der Aurignacien-Station Stratzing/Krems-Rehberg, Niederösterreich
Creators: name: Neugebauer-Maresch, Christine
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2020

description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 67 Nr. 2 (1989)
title: Russia and the rise of China: an analysis of Russian foreign policy towards China under Putin
Creators: name: Bonnet, Tyler Alexander
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2020

description: Since 2000, Russia has continued to pursue closer relations with China. In the West, the relationship has been met with skepticism. In general, the narrative of a reluctant partnership fraught with mutual mistrust and hidden rivalry has been accepted as a basis for a reasonable understanding of Russia-China relations. Nevertheless, Moscow and Beijing have continued to develop their relations and to regularly declare that they are doing so in the spirit of trust, mutual respect, and friendship. This thesis contributes a rigorous and systematic analysis to the literature on Russia-China relations that employs an integrative analytical framework targeting dispositional factors of Russian decisionmakers as a source of explanation for Russia’s foreign policy towards China from 2000 to 2020. The study finds that, primarily, perceptions of a lack of unmanageable conflicts of interests between Russia and China and an absence of harmful intentions from China to Russia among Russian foreign policy decisionmakers inhibit confrontation and enable cooperation. The thesis also contributes theoretical insight on how a great power manages decline by participating in the institutions and projects of a rising power for the sake of information access, which strengthens the ability of the declining power to protect its interests. The study includes a crowdsourced content analysis of over 42,000 paragraphs that were published by 19 prominent Russian institutions of knowledge production on international affairs, foreign policy, and security, and mention China at least once. With an additional analysis of the connections of the publishing institutions and the authors of the texts to the Russian government and military, the thesis identifies dominant views that have likely contributed to the dispositional factors that form the basis of Russia’s foreign policy towards China.
Freezing days matter in estimating the impacts of climate change on winter wheat yield
Creators: name: Da, Yabin
name: Xu, Yangyang
name: Yi, Fujin
name: McCarl, Bruce A.
name: Da, Yabin
name: Xu, Yangyang
name: Yi, Fujin
name: McCarl, Bruce A.
Publisher: name: Unknown
Year: 2021
Subjects: Environmental Economics and Policy
Food Consumption/Nutrition/Food Safety
International Development

description: Presentation 20339
Staircase Codes: FEC for 100 Gb/s OTN
Creators: name: Smith, Benjamin P.
name: Farhood, Arash
name: Hunt, Andrew
name: Kschischang, Frank R.
name: Lodge, John
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Staircase codes, a new class of forward-error-correction (FEC) codes suitable for high-speed optical communications, are introduced. An ITU-T G.709-compatible staircase code with rate R=239/255 is proposed, and FPGA-based simulation results are presented, exhibiting a net coding gain (NCG) of 9.41 dB at an output error rate of 1E-15, an improvement of 0.42 dB relative to the best code from the ITU-T G.975.1 recommendation. An error floor analysis technique is presented, and the proposed code is shown to have an error floor at 4.0E-21.
description: To appear in IEEE/OSA J. of Lightwave Technology
Heterogeneity in Farm Exit and Level of Government Payments: A Comparison between the Corn-Belt States and the US
Creators: name: Devkota, Satis
name: Subedi, Dipak
name: Todd, Jessica E.
name: Adhikari, Shyam
name: Devkota, Satis
name: Subedi, Dipak
name: Todd, Jessica E.
name: Adhikari, Shyam
Publisher: name: Unknown
Year: 2021
Subjects: Agricultural Finance
Agricultural and Food Policy
Agribusiness

description: Presentation 20341
Efficiency at maximum power of a Carnot quantum information engine
Creators: name: Fadler, Paul
name: Friedenberger, Alexander
name: Lutz, Eric
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Optimizing the performance of thermal machines is an essential task of thermodynamics. We here consider the optimization of information engines that convert information about the state of a system into work. We concretely introduce a generalized finite-time Carnot cycle for a quantum information engine and optimize its power output in the regime of low dissipation. We derive a general formula for its efficiency at maximum power valid for arbitrary working media. We further investigate the optimal performance of a qubit information engine subjected to weak energy measurements.
description: 10 pages, 5 figures
Daughter vs. Daughter-in-Law: Kinship Roles and Women's Time Use in India
Creators: name: Gupta, Tanu
name: Negi, Digvijay S.
name: Gupta, Tanu
name: Negi, Digvijay S.
Publisher: name: Unknown
Year: 2021
Subjects: Labor and Human Capital
International Development
Community/Rural/Urban Development

description: Presentation 20350
Integrating a physical constraint into a statistical inference mechanism by 11-month-old infants
Creators: name: Denison, Stephanie M.
Publisher: name: University of British Columbia
Year: 2009

description: The majority of research on cognitive development focuses on either early-emerging domain-specific knowledge or domain-general learning mechanisms; however little research examines how these sources of knowledge might interact. Previous research suggests that 8-month-old infants can make inferences from samples to populations and 11-month-old infants can integrate psychological knowledge into this mechanism (Xu & Garcia, 2008; Xu & Denison, in press). Here we asked whether infants can integrate a physical constraint, namely, a violation of cohesion into this statistical inference mechanism. Infants succeeded at this in two ways: First, they were able to override statistical information in favor of domain-specific knowledge, reasoning that in some cases a physical constraint is more informative than probabilistic information. Second, they were able to integrate the constraint into the mechanism by using it to exclude a set of objects and then computing probabilities over two remaining sets.
A modified subspace algorithm for dynamic analysis by finite elements, and vibration control of structures
Creators: name: Akl, Fathy Abou Zekry Ahmed
Publisher: name: University of Calgary
Year: 1978
Subjects: subject: TA 654 A43 1978 Microfiche
subject: Structural dynamics
subject: Plates (Engineering) - Vibration
subject: Algorithms
subject: Electronic digital processing - Structural dynamics

description: Bibliography: p. 81-84.
Neue Ausgrabungen im Oppidum Bibracte
Creators: name: Büchsenschütz, Olivier
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2020

description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 67 Nr. 2 (1989)
Impact of Climate Change on Chemical Inputs: Evidence of Pesticide Usage from China
Creators: name: Yi, Fujin
name: Liu, Huilin
name: Quan, Quan
name: Yi, Fujin
name: Liu, Huilin
name: Quan, Quan
Publisher: name: Unknown
Year: 2021
Subjects: Environmental Economics and Policy
Research Methods/Statistical Methods
Risk and Uncertainty

description: Presentation 20352
Doppeldornschnallen mit rechteckigem Rahmen im europäischen Barbaricum
Creators: name: Madyda-Legutko, Renata
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2020

description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 68 Nr. 2 (1990)