cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Input-Cell Attention Reduces Vanishing Saliency of Recurrent Neural Networks
Creators: name: Ismail, Aya Abdelsalam
name: Gunady, Mohamed
name: Pessoa, Luiz
name: Bravo, Héctor Corrada
name: Feizi, Soheil
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Recent efforts to improve the interpretability of deep neural networks use saliency to characterize the importance of input features to predictions made by models. Work on interpretability using saliency-based methods on Recurrent Neural Networks (RNNs) has mostly targeted language tasks, and their applicability to time series data is less understood. In this work we analyze saliency-based methods for RNNs, both classical and gated cell architectures. We show that RNN saliency vanishes over time, biasing detection of salient features only to later time steps and are, therefore, incapable of reliably detecting important features at arbitrary time intervals. To address this vanishing saliency problem, we propose a novel RNN cell structure (input-cell attention), which can extend any RNN cell architecture. At each time step, instead of only looking at the current input vector, input-cell attention uses a fixed-size matrix embedding, each row of the matrix attending to different inputs from current or previous time steps. Using synthetic data, we show that the saliency map produced by the input-cell attention RNN is able to faithfully detect important features regardless of their occurrence in time. We also apply the input-cell attention RNN on a neuroscience task analyzing functional Magnetic Resonance Imaging (fMRI) data for human subjects performing a variety of tasks. In this case, we use saliency to characterize brain regions (input features) for which activity is important to distinguish between tasks. We show that standard RNN architectures are only capable of detecting important brain regions in the last few time steps of the fMRI data, while the input-cell attention model is able to detect important brain region activity across time without latter time step biases.
A search for 85.5- and 86.6-GHz methanol maser emission
Creators: name: Ellingsen, S. P.
name: Cragg, D. M.
name: Minier, V.
name: Muller, E.
name: Godfrey, P. D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used the Australia Telescope National Facility Mopra 22m millimetre telescope to search for emission from the 85.5-GHz and 86.6-GHz transitions of methanol. The search was targeted towards 22 star formation regions which exhibit maser emission in the 107.0-GHz methanol transition, as well as in the 6.6-GHz transition characteristic of class II methanol maser sources. A total of 22 regions were searched at 85.5 GHz resulting in 5 detections, of which 1 appears to be a newly discovered maser. For the 86.6-GHz transition observations were made of 18 regions which yielded 2 detections, but no new maser sources. This search demonstrates that emission from the 85.5- and 86.6-GHz transitions is rare. Detection of maser emission from either of these transitions therefore indicates the presence of special conditions, different from those in the majority of methanol maser sources. We have observed temporal variability in the 86.6-GHz emission towards 345.010+1.792, which along with the very narrow line width, confirms that the emission is a maser in this source. We have combined our current observations with published data for the 6.6-, 12.1-, 85.5-, 86.6-, 107.0-, 108.8- and 156.6-GHz transitions for comparison with the maser model of Sobolev & Deguchi (1994). This has allowed us to estimate the likely ranges of dust temperature, gas density, and methanol column density, both for typical methanol maser sources and for those sources which also show 107.0-GHz emission.
description: 11 pages, accepted for publication in MNRAS, Latex, mn2e.cls
Eram os Pterossauros, Morcegos? (2020)
Creators: name: Scientia, Vita
name: Stefano, W.
name: C.S. Braga
name: Pigato, L.M.M.
Publisher: name: figshare
Year: 2021
Subjects: subject: Paleontology
subject: 220206 History and Philosophy of Science (incl. Non-historical Philosophy of Science)
subject: FOS: Philosophy, ethics and religion

description: Os pterossauros foram répteis que viveram na Terra durante o período do Mesozoico, de 250 a 65 milhões de anos atrás, sendo pioneiros dentro do grupo de vertebrados que desenvolveram um verdadeiro vôo, por isso dominaram os céus do horizonte longínquo, e assemelharam-se à um animal “híbridos entre aves e morcegos”, além de apresentarem características de répteis (Butler, 2009; Witton, 2013; Kerllner, 2015).
title: Les marchés du travail régionaux : une comparaison entre le Canada et les États-Unis
Creators: name: Lefebvre, Mario
Publisher: name: Bank of Canada
Year: 1997

description: The purpose of this study is to compare the behaviour of regional labour markets in Canada and the United States. The study shows that the degree of persistence of unemployment is significantly higher in the provinces of Canada than it is in the various American regions. Among other things, it shows that there has been almost no change over the last 30 years in the relative ranking of Canadian provinces with respect to unemployment in contrast to what has happened in the United States. The study also uses vector autoregressive analysis (VAR) to examine how different variables behave when there is a sudden drop in employment in the average province or region of each country. It shows that, when employment falls, relative rates of unemployment and labour market participation hardly move in the United States, while in Canada, relative unemployment in the province affected rises considerably. These very different results are explained in part by the greater degree of labour mobility in the United States, a factor that may also go at least part way in explaining the current gap between Canadian and American unemployment rates.
description: Cette étude a pour but de comparer l'évolution des marchés régionaux de l'emploi au Canada et aux États-Unis. L'étude démontre que le degré de persistance du chômage dans les provinces canadiennes est nettement plus élevé que dans les régions américaines. Entre autres, l'étude illustre que la position relative des provinces canadiennes en matière de chômage n'a pratiquement pas changé depuis 30 ans, ce qui n'est pas le cas des régions américaines. L'étude examine aussi, à l'aide de vecteurs autorégressifs (VAR), le comportement de différentes variables lors d'une réduction soudaine de l'emploi dans la province ou la région moyenne de chaque pays. On observe qu'aux États-Unis, les taux relatifs de chômage et d'activité ne bougent pratiquement pas lorsque l'emploi baisse, tandis qu'au Canada le taux de chômage relatif de la province touchée augmente considérablement. Une mobilité plus grande de la main-d'oeuvre aux États-Unis explique en partie ce résultat très différent. Cette observation pourrait aussi être utilisée pour expliquer, du moins partiellement, l'écart qui existe présentement entre les taux de chômage canadien et américain.
title: Canadian Short-Term Interest Rates and the BAX Futures Market: Analysis of the Impact of Volatility on Hedging Activity and the Correlation of Returns between Markets
Creators: name: Watt, David G.
Publisher: name: Bank of Canada
Year: 1997

description: This paper analyses how Canadian financial firms manage short-term interest rate risk through the use of BAX futures contracts. The results show that the most effective hedging strategy is, on average, a static strategy based on linear regression that assumes constant variances, even though dynamic models allowing for time-varying variances are found to have superior explanatory power. The results also show a rise in the correlation of the returns to three-month bankers' acceptances and three-month treasury bills with the returns to BAX futures contracts during periods of increased money market volatility, suggesting that hedging activity should increase during market volatility.
description: La présente étude analyse la façon dont les entreprises financières canadiennes gèrent le risque de taux d'intérêt à court terme par l'entremise de contrats BAX. Les résultats de cet examen montrent que la stratégie de couverture la plus efficace, en moyenne, est une stratégie statique fondée sur une régression linéaire qui suppose des variances constantes, même si des modèles dynamiques autorisant des variances variables dans le temps ont un pouvoir explicatif supérieur. Ces résultats montrent également une augmentation de la corrélation entre les rendements des acceptations bancaires à trois mois et des bons du Trésor à trois mois et ceux des contrats BAX au cours de périodes de volatilité accrue sur le marché monétaire, ce qui donne à penser que les opérations de couverture devraient s'accroître pendant de telles périodes.
R&D around a photoneutralizer-based NBI system (Siphore) in view of a DEMO Tokamak steady state fusion reactor
Creators: name: Simonin, A.
name: Achard, Jocelyn
name: Achkasov, K.
name: Béchu, S.
name: Baudouin, C.
name: Baulaigue, O.
name: Blondel, C.
name: Boeuf, J. P.
name: Cartry, Gilles
name: Chaibi, W.
name: Drag, C.
name: de Esch, H. P. L.
name: Fiorucci, D.
name: Fubiani, G.
name: Furno, I.
name: Futtersack, R.
name: Garibaldi, P.
name: Gicquel, A.
name: Grand, C.
name: Guittienne, Ph
name: Hagelaar, G.
name: Howling, A.
name: Jacquier, R.
name: Kirkpatrick, M. J.
name: Lemoine, D.
name: Lepetit, B.
name: Minea, T.
name: Odic, E.
name: Revel, A.
name: Soliman, B. A.
name: Teste, P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Since the signature of the ITER treaty in 2006, a new research programme targeting the emergence of a new generation of Neutral Beam (NB) system for the future fusion reactor (DEMO Tokamak) has been underway between several laboratories in Europe. The specifications required to operate a NB system on DEMO are very demanding: the system has to provide plasma heating, current drive and plasma control at a very high level of power (up to 150 MW) and energy (1 or 2 MeV), including high performances in term of wall-plug efficiency ($η$ > 60%), high availability and reliability. To this aim, a novel NB concept based on the photodetachment of the energetic negative ion beam is under study. The keystone of this new concept is the achievement of a photoneutralizer where a high power photon flux (~3 MW) generated within a Fabry Perot cavity will overlap, cross and partially photodetach the intense negative ion beam accelerated at high energy (1 or 2 MeV). The aspect ratio of the beam-line (source, accelerator, etc.) is specifically designed to maximize the overlap of the photon beam with the ion beam. It is shown that such a photoneutralized based NB system would have the capability to provide several tens of MW of D 0 per beam line with a wall-plug efficiency higher than 60%. A feasibility study of the concept has been launched between different laboratories to address the different physics aspects, i.e., negative ion source, plasma modelling, ion accelerator simulation, photoneutralization and high voltage holding under vacuum. The paper describes the present status of the project and the main achievements of the developments in laboratories.
Metadata record for the article: Automated percent mammographic density, mammographic texture variation, and risk of breast cancer: A nested case-control study
Creators: name: Warner, Erica T.
name: Rice, Megan S.
name: Zeleznik, Oana A.
name: Fowler, Erin
name: Murthy, Divya
name: Celine M. Vachon
name: Bertrand, Kimberly A.
name: Rosner, Bernard
name: Heine, John
name: Rulla M. Tamimi
Publisher: name: figshare
Year: 2021
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Diseases
subject: 111706 Epidemiology
subject: FOS: Health sciences
subject: 119999 Medical and Health Sciences not elsewhere classified
subject: FOS: Other medical sciences

description: Summary
 This metadata record provides details of the data supporting the claims of the related article: “Automated percent mammographic density, mammographic texture variation, and risk of breast cancer: A nested case-control study”. The related study assessed whether percent mammographic density (PMD), automated PMD, and V (the standard deviation of pixel intensity) yielded independent associations with breast cancer risk. Type of data: mammogram, manual PMD, automated PMD, breast area segmentation Subject of data: Homo sapiens Population characteristics: The study population includes 1900 breast cancer cases and 3921 matched controls from the Nurses’ Health Study (NHS) and Nurses’ Health Study II (NHSII). NHS began in 1976 with 121,700 female registered nurses aged 30 to 55 from 11 states. NHSII began in 1989 with 116,429 female registered nurses, aged 25 to 42, from 14 states. Participants in each cohort completed a baseline questionnaire at enrollment and are followed by biennially mailed questionnaires to collect information on newly diagnosed diseases, exposures, and covariates. Data access The data that support the findings of the related study are available from the Nurses’ Health Studies. However, they are not publicly available in order to protect patient privacy. Investigators interested in using the data can request access by contacting the corresponding author, and feasibility will be discussed at an investigators’ meeting. Limits are not placed on scientific questions or methods and there is no requirement for co-authorship. Additional data sharing information and policy details can be accessed at http://www.nurseshealthstudy.org/researchers. Corresponding author(s) for this study Erica T. Warner, Clinical and Translational Epidemiology Unit, Mongan Institute, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA. ewarner@mgh.harvard.edu.
 Study approval  The study protocol was approved by the institutional review boards of the Brigham and Women’s Hospital and Harvard T.H. Chan School of Public Health, and those of participating registries as required.
On Migdal's theorem and the pseudogap
Creators: name: Monthoux, P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study a model of quasiparticles on a two-dimensional square lattice coupled to Gaussian distributed dynamical molecular fields. The model describes quasiparticles coupled to spin or charge fluctuations, and is solved by a Monte Carlo sampling of the molecular field distributions. When the molecular field correlations are sufficiently weak, the corrections to the self-consistent Eliashberg theory do not bring about qualitative changes in the quasiparticle spectrum. But for a range of model parameters near the magnetic boundary, we find that Migdal's theorem does not apply and the quasiparticle spectrum is qualitatively different from its mean-field approximation, in that a pseudogap opens in the quasiparticle spectrum. An important feature of the magnetic pseudogap found in the present calculations is that it is strongly anisotropic. It vanishes anlong the diagonal of the Brillouin zone and is large near the zone boundary. In the case of ferromagnetic fluctuations, we also find a range of model parameters with qualitative changes in the quasiparticle spectral function not captured by the one-loop approximation, in that the quasiparticle peak splits into two. We provide intuitive arguments to explain the physical origin of the breakdown of Midgal's theorem
description: revised version
CompenNet++: End-to-end Full Projector Compensation
Creators: name: Huang, Bingyao
name: Ling, Haibin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: Full projector compensation aims to modify a projector input image such that it can compensate for both geometric and photometric disturbance of the projection surface. Traditional methods usually solve the two parts separately, although they are known to correlate with each other. In this paper, we propose the first end-to-end solution, named CompenNet++, to solve the two problems jointly. Our work non-trivially extends CompenNet, which was recently proposed for photometric compensation with promising performance. First, we propose a novel geometric correction subnet, which is designed with a cascaded coarse-to-fine structure to learn the sampling grid directly from photometric sampling images. Second, by concatenating the geometric correction subset with CompenNet, CompenNet++ accomplishes full projector compensation and is end-to-end trainable. Third, after training, we significantly simplify both geometric and photometric compensation parts, and hence largely improves the running time efficiency. Moreover, we construct the first setup-independent full compensation benchmark to facilitate the study on this topic. In our thorough experiments, our method shows clear advantages over previous arts with promising compensation quality and meanwhile being practically convenient.
description: To appear in ICCV 2019. High-res supplementary material: https://www3.cs.stonybrook.edu/~hling/publication/CompenNet++_sup-high-res.pdf. Code: https://github.com/BingyaoHuang/CompenNet-plusplus
О ПРОБЛЕМАХ СЛЕДСТВЕННЫХ ОРГАНОВ, ВЛИЯЮЩИХ НА ИХ ЭФФЕКТИВНОСТЬ.
Creators: name: Исаков, Лутфуллохон
Publisher: name: Zenodo
Year: 2024

description: Повышение эффективности и оптимизация уголовного процесса могут быть названы важнейшими задачами сегодняшнего дня. Несмотря на периодические реформы, проводимые в данной области, качество следствия до сих пор не соответствуют требованиям.
Consumer Preferences for Peach Attributes: Market Segmentation Analysis and Implications for New Marketing Strategies
Creators: name: Campbell, Benjamin L.
name: Mhlanga, Saneliso
name: Lesschaeve, Isabelle
name: Campbell, Benjamin L.
name: Mhlanga, Saneliso
name: Lesschaeve, Isabelle
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Institutional and Behavioral Economics
subject: Marketing
subject: FOS: Economics and business
subject: conjoint analysis
subject: market simulation
subject: tender fruit

description: Consumers in today’s marketplace have seemingly endless choices with regards to produce. Peach growers and retailers in Ontario, Canada, have begun taking steps to increase demand for their products. This study investigates the impact of those strategies on the market. Using conjoint analysis and market simulations, we evaluate the peach market to identify key drivers of peach purchasing. The results indicate that the market is heterogeneous and that price, origin, and quality indicators are the most important drivers of purchases. Our simulations indicate that adoption of new plastic packaging by the industry is a viable strategy for increasing demand for local peaches.
Quantum Hall Systems: Braid groups, composite fermions, and fractional charge
Creators: name: Jacak, Lucjan
name: Sitko, Piotr
name: Wieczorek, Konrad
name: Wójs, Arkadiusz
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: Algebraic Topology (math.AT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The book presents the wide range of topics in two-dimensional physics of quantum Hall systems, especially fractional quantum Hall states. It starts with the fundamental problems of quantum statistics in two dimensions and the corresponding braid group formalism. The braid group formalism of anyons (previously known) is developed for composite fermions. The main formalism used in many-body quantum Hall theories -- the Chern-Simons theory is also presented. The Chern-Simons theory of anyons (particles obeying fractional statistics) and composite fermions (related to Hall systems) is given, in detail. Numerical studies, which play the important role in quantum Hall theories, are presented for spherical systems (Haldane sphere). The composite fermion theory is tested in numerical studies. The concept of the hierarchy of condensed states of composite fermion excitations is introduced (in analogy to the Haldane hierarchy)1). The hierarchies of odd-denominator states and even-denominator states are presented. The BCS paired Hall state is also discussed. The introduction into multi-component quantum Hall systems and spin quantum Hall systems is sketched. 1)First condensed states of composite fermion excitations have been very recently confirmed in the experiment (Pan et al. Phys. Rev. Lett. 90 (2003) 016801). a sample of this book is available at http://www.oup.co.uk/isbn/0-19-852870-1
description: Table of contents, a sample of this book is available at http://www.oup.co.uk/isbn/0-19-852870-1
MOESM1 of Experiences from Decentralised Radiological Services in Norway â€“ a rural case study
Creators: name: Myklebust, Aud
name: Eide, Hilde
name: Ellis, Brian
name: Beattie, Rona
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Additional file 1: Table S1. Interview guide.
“Short Neck” Elasmosaurus versus “Long Neck” Elasmosaurus: a Revanche (2020)
Creators: name: Scientia, Vita
name: Battaglia, D.K.
name: Oliveira, T.C.N.
name: Stefano, W.
Publisher: name: figshare
Year: 2021
Subjects: subject: Paleontology
subject: 220206 History and Philosophy of Science (incl. Non-historical Philosophy of Science)
subject: FOS: Philosophy, ethics and religion

description: Edward Drinker Cope (Figura 1) nasceu em 28 de julho de 1840 na Filadélfia, foi um importante pesquisador na área da história natural paleontologia, seus trabalhos contribuíram com a descrição de vários fósseis juntamente com Joseph Leidy1 (1823–1891) e Charles Othniel Marsh (1831–1899) (Gill, 1897).
Morphology and luminosity segregation of galaxies in nearby loose groups
Creators: name: Girardi, M.
name: Rigoni, E.
name: Mardirossian, F.
name: Mezzetti, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study morphology and luminosity segregation of galaxies in loose groups. We analyze the two catalogs of groups which have been identified in the Nearby Optical Galaxy (NOG) sample, by means of hierarchical and percolation ``friends-of-friends'' methods (HG and PG catalogs, respectively). In the first part of our analysis we consider 387 and 436 groups of HG and PG, respectively, and compare morphology- (luminosity-) weighted to unweighted group properties: velocity dispersion, mean pairwise distance, and mean groupcentric distance of member galaxies. The second part of our analysis is based on two ensemble systems, one for each catalog, built by suitably combining together galaxies of all groups (1584 and 1882 galaxies for HG and PG groups, respectively). We find that earlier-type (brighter) galaxies are more clustered and lie closer to the group centers, both in position and in velocity, than later-type (fainter) galaxies. Spatial segregations are stronger than kinematical segregations. These effects are generally detected at the larger than 3-sigma level. Luminosity segregation is shown to be independent of morphology segregation. Our main conclusions are strengthened by the detection of segregation in both hierarchical and percolation catalogs. Our results agree with a continuum of segregation properties of galaxies in systems, from low-mass groups to massive clusters.
description: 12 pages, 8 eps figures, submitted for publication in AA
Uma pedra no sapato de Charles Dawson: o Caso do Plagiaulax dawsoni (2020)
Creators: name: Scientia, Vita
name: Corsini Filho, C. V.
name: Stefano, W.
Publisher: name: figshare
Year: 2021
Subjects: subject: Paleontology
subject: 220206 History and Philosophy of Science (incl. Non-historical Philosophy of Science)
subject: FOS: Philosophy, ethics and religion

description: Charles Dawson (Figura 1) nasceu em 1864 na cidade de Leyland, em Lancashire, e faleceu em 1916 em Sussex. Dawson era filho de Hugh Dawson Junior (1836-1884), e Mary Ann Chaffer (1837-1922) e desde a infância se interessava por paleontologia e arqueologia, coletando fósseis as pedreiras em Hastings1 (Farrant, 2013, pp. 147–148).
Mott transition from a diluted exciton gas to a dense electron-hole plasma in a single V-shaped quantum wire
Creators: name: Guillet, Thierry
name: Grousson, Roger
name: Voliotis, Valia
name: Menant, Michel
name: Wang, Xue-Lun
name: Ogura, Mutsuo
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We report on the study of many-body interactions in a single high quality V-shaped quantum wire by means of continuous and time-resolved microphotoluminescence. The transition from a weakly interacting exciton gas when the carrier density n is less than 10^5 cm^-1 (i.e. n aX < 0.1, with aX the exciton Bohr radius), to a dense electron-hole plasma (n > 10^6 cm^-1, i.e. n aX > 1) is systematically followed in the system as the carrier density is increased. We show that this transition occurs gradually : the free carriers first coexist with excitons for n aX > 0.1, then the electron-hole plasma becomes degenerate at n aX = 0.8. We also show that the non-linear effects are strongly related to the kind of disorder and localization properties in the structure especially in the low density regime.
description: 5 figures
As confidências de Mary Anning (2020)
Creators: name: Scientia, Vita
name: Suner, G.
name: Smith, N.A.
name: Branco, M.B.C.
name: Stefano, W.
Publisher: name: figshare
Year: 2021
Subjects: subject: Paleontology
subject: 220206 History and Philosophy of Science (incl. Non-historical Philosophy of Science)
subject: FOS: Philosophy, ethics and religion

description: Mary Anning nasceu em 20 de maio de 1799, na pequena vila costeira de Lyme Regis, em Devon, na baía de Lyme, sudoeste da Inglaterra. Nomeada em homenagem à irmã, que havia morrido cinco meses antes dela nascer. Juntamente com o irmão Joseph (1796-1849) foi a única filha de Mary Moore (conhecida como Molly) e Richard Anning a chegar à idade adulta (Torrens, 1995).
Twelve-month and Nine-month Agricultural Economics Faculty Salaries
Creators: name: Robbins, Lynn W.
name: Reed, Michael R.
name: Robbins, Lynn W.
name: Reed, Michael R.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Labor and Human Capital
subject: Teaching/Communication/Extension/Profession
subject: budget management
subject: converting faculty appointments
subject: enhancing grants
subject: faculty salaries
subject: hiring
subject: retention
subject: salaries
subject: twelve-month and nine-month appointments

description: Ever more agricultural economics departments are offering appointments for nine rather than twelve months but little if any analysis of the impact of this change has been done. Our research shows that converting to nine-month contracts is an effective way to raise salaries without an initial outlay of new funds and thus meets the retention criterion. Lower ranks do not suffer significantly lower salaries (without supplements) and professors earn more. Because the nine-month alternative costs more, justification for converting all twelve-month faculty members must rest on other factors, such as enhanced grants or comparability.
Field-Particle Dynamics in Spacetime Geometries
Creators: name: Tucker, Robin W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: With the aid of a Fermi-Walker chart associated with an orthonormal frame attached to a time-like curve in spacetime, a discussion is given of relativistic balance laws that may be used to construct models of massive particles with spin, electric charge and a magnetic moment,interacting with background electromagnetic fields and gravitation described by non-Riemannian geometries. A natural generalisation to relativistic Cosserat media is immediate.
description: LaTeX, 28 pages
title: Fads or Bubbles?
Creators: name: Schaller, Huntley
name: van Norden, Simon
Publisher: name: Bank of Canada
Year: 1997

description: This paper tests between fads and bubbles using a new empirical strategy (based on switching-regression econometrics) for distinguishing between competing asset-pricing models. By extending the Blanchard and Watson (1982) model, we show how stochastic bubbles can lead to regime-switching in stock market returns. By incorporating state-dependent heteroscedasticity into the Cutler, Poterba, and Summers (1991) fads model, we show that it can also lead to regime-switching. Two main features of the bubbles model distinguish it from the fads model. First, the bubbles model implies that returns are drawn from two distinct regimes. Second, the bubbles model implies that deviations from fundamental price will help predict regime switches. Using U.S. data for 1926-89, we find evidence that is consistent with the fads model even when we allow for variation in expected dividend growth rates and expected discount rates. However, the restrictions that the fads model implies for a more general switching model are rejected. The rejections point in the direction of the bubbles model, although not all the implications of the bubbles model are supported by the data.
description: Les auteurs de l'étude ont recours à une nouvelle approche empirique, fondée sur l'emploi de méthodes de régression avec changement de régime, en vue de différencier deux modèles d'évaluation des actifs, soit le modèle des bulles et le modèle des engouements. À l'aide d'une version élargie du modèle de Blanchard et Watson (1982), ils montrent comment la présence de bulles stochastiques peut provoquer un changement de régime de la courbe de rendement des valeurs boursières. Ils démontrent par ailleurs que, si on part de l'hypothèse que l'hétéroscédasticité varie selon l'état, le modèle de Cutler, Poterba et Summers (1991) relatif aux engouements peut également déboucher sur un changement de régime. Le modèle des bulles se distingue du modèle des engouements sur deux points importants. Premièrement, il repose sur l'hypothèse que les rendements sont tirés de deux régimes distincts. Deuxièmement, il postule que les écarts observés par rapport au prix fondamental aident à prévoir les changements de régime. Les résultats obtenus par les auteurs au moyen de données américaines couvrant la période 1926-1989 appuient le modèle des engouements même si on laisse varier les taux d'accroissement attendus des dividendes et les taux d'actualisation attendus. En revanche, les restrictions qu'il faut imposer à un modèle général de régression avec changement de régime pour qu'il se ramène au modèle des engouements sont rejetées. Ce rejet tend à accréditer le modèle des bulles, bien que les restrictions que ce dernier suppose ne soient pas toutes corroborées par les données.
A novel recombinant human thrombopoietin for treating prolonged isolated thrombocytopenia after allogeneic stem cell transplantation
Creators: name: Sun, Yu-Qian
name: Kong, Yuan
name: Zhang, Xiao-Hui
name: Wang, Yu
name: Shi, Min-Min
name: Song, Yang
name: Kong, Jun
name: Fu, Hai-Xia
name: Yan, Chen-Hua
name: Xu, Lan-Ping
name: Liu, Kai-Yan
name: Huang, Xiao-Jun
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Patients with prolonged isolated thrombocytopenia (PT) after allogeneic stem cell transplantation (allo-SCT) are known to have a poor prognosis. However, there is no standard treatment for PT. The present study aimed to investigate the potential effect of a novel recombinant human thrombopoietin (rhTPO) in a cohort of patients with PT following allo-SCT. A total of 24 patients with PT (including delayed platelet engraftment and secondary failure of platelet recovery) were treated with rhTPO from July 1, 2016 to May 31, 2017. rhTPO injections were administered at 300 IU/kg/d for 28 consecutive days or until platelet counts were ≥ 50 × 109/L, independent of platelet transfusion. Response was defined as platelet recovery to ≥ 20 × 109/L for seven consecutive days without transfusion support during or within 7 days of the end of rhTPO treatment. All patients completed the 28 days of treatment, and none were withdrawn due to adverse effects. The overall response was 45.8%, which was significantly higher than historical data (12.2%, p < 0.001). The median response time was 12 (7–25) days from the initiation of rhTPO treatment. A response to rhTPO was associated with megakaryocytes in the bone marrow (positive vs. negative, 81.8 vs. 22.2%; p = 0.022). Among 11 patients exhibiting a response to rhTPO, the median number of megakaryocytes in bone marrow was increased significantly (10 vs. 2; p = 0.036) after rhTPO treatment. In conclusion, the results of this preliminary study suggest that rhTPO may represent a therapeutic option, with a response of 45.8% for patients with PT after allo-SCT, and especially for those with megakaryocytes in the bone marrow. However, this should be further confirmed in randomized prospective clinical trials.
Analysis of Factors Influencing Agritourism Businesses in Expansion
Creators: name: Jensen, Kimberly
name: Bruch Leffew, Megan
name: Menard, Jamey
name: English, Burton C.
name: Jensen, Kimberly
name: Bruch Leffew, Megan
name: Menard, Jamey
name: English, Burton C.
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Marketing
subject: FOS: Economics and business
subject: Agritourism
subject: Business Expansion
subject: Logit

description: This study assesses how characteristics of agritourism operations may influence future expansion plans. Differences in barriers which agritourism operations face, as well as types of promotion methods used are examined for expansion-minded agritourism operators. This information will be useful to agritourism operators, as they look for contributors to future growth.
Richard Owen no Banco dos Réus O caso de Oxford Clay (2020)
Creators: name: Scientia, Vita
name: Nagliati, G.C.S.
name: Fernandes, R.M.L.
name: Stefano, W.
Publisher: name: figshare
Year: 2021
Subjects: subject: Paleontology
subject: 220206 History and Philosophy of Science (incl. Non-historical Philosophy of Science)
subject: FOS: Philosophy, ethics and religion

description: Richard Owen (1804-1892) (Figura 1) foi um dos personagens mais atuantes na História Natural do século XIX. Sua habilidade como anatomista, obtida em seus anos de graduação na medicina, lhe permitiu ingressar na área da anatomia comparada, e não é difícil imaginar que daí para a paleontologia o caminho foi pressentido. A competência de Owen, na anatomia e na paleontologia foi reconhecida na época pelos naturalistas britânicos o que lhe rendeu a alcunha de “Cuvier Britânico”, um cognome que fazia jus à comparação com Georges Cuvier (1769-1832), eminente francês especialista em fósseis. Owen foi um pesquisador dedicado e meticuloso e quando diante das observações dos animais, ele os descrevia com detalhes, em vista disso, suas observações eram publicadas logo em seguida em revistas científicas. Porém, o que Owen tinha de talentoso, tinha de polêmico, uma vez que esteve envolvido em diversas disputas e rixas com demais naturalistas, que lhe tributaram a carapuça de um personagem vilanesco.
Chemically active substitutional nitrogen impurity in carbon nanotubes
Creators: name: Nevidomskyy, Andriy H.
name: Csányi, Gábor
name: Payne, Michael C.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the nitrogen substitutional impurity in semiconducting zigzag and metallic armchair single-wall carbon nanotubes using ab initio density functional theory. At low concentrations (less than 1 atomic %), the defect state in a semiconducting tube becomes spatially localized and develops a flat energy level in the band gap. Such a localized state makes the impurity site chemically and electronically active. We find that if two neighboring tubes have their impurities facing one another, an intertube covalent bond forms. This finding opens an intriguing possibility for tunnel junctions, as well as the functionalization of suitably doped carbon nanotubes by selectively forming chemical bonds with ligands at the impurity site. If the intertube bond density is high enough, a highly packed bundle of interlinked single-wall nanotubes can form.
description: 4 pages, 4 figures; major changes to the text
Perturbatively-perfect many-body transfer
Creators: name: Chetcuti, Wayne Jordan
name: Sanavio, Claudio
name: Lorenzo, Salvatore
name: Apollaro, Tony J. G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The coherent transfer of excitations between different locations of a quantum many-body system is of primary importance in many research areas, from transport properties in spintronics and atomtronics to quantum state transfer in quantum information processing. We address the transfer of $n>1$ bosonic and fermionic excitations between the edges of a one-dimensional chain modeled by a quadratic hopping Hamiltonian, where the block edges, embodying the sender and the receiver sites, are weakly coupled to the quantum wire. We find that perturbatively perfect coherent transfer is attainable in the weak-coupling limit, for both bosons and fermions, only for certain modular arithmetic equivalence classes of the wire's length. Finally we apply our findings to the transport of spins and the charging of a many-body quantum battery.
description: 25 pages, 7 figures. Comments welcome
Evidence for a multipolar magnetic field in SGR J1745-2900 from X-ray light-curve analysis
Creators: name: de Lima, Rafael C. R.
name: Coelho, Jaziel G.
name: Pereira, Jonas P.
name: Rodrigues, Claudia V.
name: Rueda, Jorge A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: SGR J1745-2900 was detected from its outburst activity in April 2013 and it was the first soft gamma repeater (SGR) detected near the center of the Galaxy (Sagittarius A$^*$). We use 3.5-year Chandra X-ray light-curve data to constrain some neutron star (NS) geometric parameters. We assume that the flux modulation comes from hot spots on the stellar surface. Our model includes the NS mass, radius, a maximum of three spots of any size, temperature and positions, and general relativistic effects. We find that the light-curve of SGR J1745-2900 could be described by either two or three hot spots. The ambiguity is due to the small amount of data, but our analysis suggests that one should not disregard the possibility of multi-spots (due to a multipolar magnetic field) in highly magnetized stars. For the case of three hot spots, we find that they should be large and have angular semi-apertures ranging from 16-67 degrees. The large size found for the spots points to a magnetic field with a nontrivial poloidal and toroidal structure (in accordance with magnetohydrodynamics investigations and NICER's recent findings for PSR J0030+0451) and is consistent with the small characteristic age of the star. Finally, we also discuss possible constraints on the mass and radius of SGR J1745-2900 and briefly envisage possible scenarios accounting for the 3.5-year evolution of SGR J1745-2900 hot spots.
description: 11 pages,5 figures, 5 tables; Accepted for publication in the Astrophysical Journal (ApJ)
The Rare Radiative Annihilation Decays $\bar{B}^0_{s,d} \to J/ψγ$
Creators: name: Lu, Gongru
name: Wang, Rumin
name: Yang, Yadong
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the physics potential of the annihilation decays $\bar{B}^0_{s,d} \to J/ψ$ $γ$ in the Standard Model and beyond. In naive factorization approach, the branching ratios are estimated to be $\mathcal{B}(\bar{B}^0_s \to J/ψγ)=1.40\times 10^{-6}$ and $\mathcal{B}(\bar{B}^0_d \to J/ψγ)=5.29\times 10^{-8}$. In the framework of QCD factorization, we compute the non-factorizable corrections and get $\mathcal{B}(\bar{B}^0_s \to J/ψγ) = 2.11\times10^{-7}$, $\mathcal{B}(\bar{B}^0_d \to J/ψγ) =7.65\times10^{-9}$. Future measurements of these decays would be useful for testing the factorization frameworks. The smallness of these decays in the SM make them sensitive probes of New Physics. As an example, we will consider the possible admixture of (V+A) charge current to the standard (V-A) current. This admixture will give significant contributions to the decays.
description: 13pages, 3figures
title: La courbe de Phillips au Canada : un examen de quelques hypothèses
Creators: name: Fillion, Jean-François
name: Léonard, André
Publisher: name: Bank of Canada
Year: 1997

description: La présente étude, qui s'inspire de diverses recherches effectuées sur la dynamique des prix au Canada, examine certaines hypothèses susceptibles d'expliquer la piètre qualité des prévisions réalisées récemment à l'aide de la courbe de Phillips traditionnelle. Parmi les explications du problème de sous-estimation de l'inflation que nous considérons, l'hypothèse que le processus de formation des attentes d'inflation a changé au cours des dernières années est celle qui ressort le plus de nos conclusions. Les modifications des attentes ont, selon toute vraisemblance, été influencées par l'évolution de la politique monétaire. Pour tenir compte de cet élément, nous estimons la courbe de Phillips en y incluant quatre régimes autorégressifs déterminés à partir des résultats d'un modèle de Markov à changement de régime. La courbe de Phillips dotée de changements de régime permet de réaliser depuis 1991 des prévisions précises de l'inflation.
description: This study, which draws on a variety of research on price dynamics in Canada, examines some hypotheses that might explain the poor quality of recent inflation forecasts based on the conventional Phillips curve. Among the various explanations we consider for the persistent underestimation of inflation, the one that emerges most clearly from our findings is that the process by which inflation expectations are formed has changed in recent years. Shifts in expectations appear to have been influenced by monetary policy developments. To take account of this factor, we estimate a Phillips curve that incorporates four autoregressive regimes based on the results of a Markov-switching model. We find that when regimes are introduced, the Phillips curve produces accurate forecasts for inflation since 1991.
Glass and the Presence of Nature
Creators: name: Carpenter, J.
Publisher: name: Challenging Glass Conference Proceedings
Year: 2010

description: Despite having become a ubiquitous material, the nature of glass continues to cause lively scientific discussion. The science is in contrast to the use of glass in the building industry and world of architecture, where, typically, only transparency is considered and any manipulation of the glass is deployed to improve the glass’ performance as a cladding material. Through the discussion of a selection of JCDA’s work, this paper will explore the potential for glass in architecture to be considered in a manner that includes its many undeveloped properties and its powerful potential for revealing the presence of nature in the expanding urban public realm.
description: Challenging Glass Conference Proceedings, Vol. 2 (2010): Challenging Glass 2
Complete identification of alkali sites in ion conducting lithium silicate glasses: a computer study of ion dynamics
Creators: name: Lammert, Heiko
name: Kunow, Magnus
name: Heuer, Andreas
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The available sites for ions in a typical disordered ionic conductor are determined. For this purpose we devised a straightforward algorithm which via cluster analysis identifies these sites from long time ionic trajectories below the glass transition. This is exemplified for a lithium silicate glass (Li_2O)_x (SiO_2)_(1-x) for x = 0.5 and x = 0.1. We find for both concentrations that the number of sites is only slightly bigger than the number of ions. This result suggests a theoretical description of the dynamics in terms of mobile vacancies as most appropriate. Furthermore identification of the ionic sites allows one to obtain detailed characteristics of the ionic motion, e.g. quantification of correlated forward-backward jumps.
description: 4 pages, 4 figures, revtex4, as published in PRL, with corrections from proofs including some numerical values
MOESM1 of CTCF modulates allele-specific sub-TAD organization and imprinted gene activity at the mouse Dlk1-Dio3 and Igf2-H19 domains
Creators: name: Llères, David
name: Moindrot, Benoît
name: Pathak, Rakesh
name: Piras, Vincent
name: Mélody Matelot
name: Pignard, Benoît
name: Marchand, Alice
name: Poncelet, Mallory
name: Perrin, Aurélien
name: Tellier, Virgile
name: Feil, Robert
name: Noordermeer, Daan
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Supplementary Figures and Supplementary Tables.
Nem só da ciencia viviam os naturalistas um poema para Buckland (2020)
Creators: name: Scientia, Vita
name: Araujo, B.C.S.
name: Corsini, F.C.V.
name: Almeida, M.B.
name: Stefano, W.
Publisher: name: figshare
Year: 2021
Subjects: subject: 220206 History and Philosophy of Science (incl. Non-historical Philosophy of Science)
subject: FOS: Philosophy, ethics and religion
subject: Paleontology

description: William Buckland (Figura 1) nasceu em 1784, na cidade de Axminster, no município de Devon, Inglaterra, onde desde a infância se interessava pelos fósseis e rochas quando passeava com o pai. Buckland formou-se em 1804 no Corpus Christi College, Oxford, e em pouco tempo foi nomeado sacerdote e membro da universidade; desde então continuou seus estudos no curso de Bachelor of Arts1 na Universidade de Oxford se interessando principalmente pelas aulas de mineralogia, química e anatomia em especial com os professores John Kidd2 (1775-1851) e Christopher Pegge3 (1765- 1822). A dedicação de Buckland lhe possibilitou após um tempo o seu reconhecimento na área da geologia, de tal forma que acabou conquistando as cadeiras de mineralogia e geologia na Universidade de Oxford entre 1813 e 1849, sucedendo seu ex-professor John Kidd. Seu fascínio pelo ensino e ciência, aliado ao seu humor e eloquência, atraia a atenção das pessoas convertendo Buckland em um protagonista popular (Gordon, 1894; Edmonds, 1956).