cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hydrodynamic limit of a B.G.K. like model on domains with boundaries and analysis of kinetic boundary conditions for scalar multidimensional conservation laws
Creators: name: Tidriri, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35L65; 82C40

description: In this paper we study the hydrodynamic limit of a B.G.K. like kinetic model on domains with boundaries via $BV_{loc}$ theory. We obtain as a consequence existence results for scalar multidimensional conservation laws with kinetic boundary conditions. We require that the initial and boundary data satisfy the optimal assumptions that they all belong to $L^1\cap L^\infty$ with the additional regularity assumptions that the initial data are in $BV_{loc}$. We also extend our hydrodynamic analysis to the case of a generalized kinetic model to account for forces effects and we obtain as a consequence the existence theory for conservation laws with source terms and kinetic boundary conditions.
Crystalline gauge fields and quantized discrete geometric response for Abelian topological phases with lattice symmetry
Creators: name: Manjunath, Naren
name: Barkeshli, Maissam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Clean isotropic quantum Hall fluids in the continuum possess a host of symmetry-protected quantized invariants, such as the Hall conductivity, shift and Hall viscosity. Here we develop a theory of symmetry-protected quantized invariants for topological phases defined on a lattice, where quantized invariants with no continuum analog can arise. We develop topological field theories using discrete crystalline gauge fields to fully characterize quantized invariants of (2+1)D Abelian topological orders with symmetry group $G = U(1) \times G_{\text{space}}$, where $G_{\text{space}}$ consists of orientation-preserving space group symmetries on the lattice. We show how discrete rotational and translational symmetry fractionalization can be characterized by a discrete spin vector, a discrete torsion vector which has no analog in the continuum or in the absence of lattice rotation symmetry, and an area vector, which also has no analog in the continuum. The discrete torsion vector implies a type of crystal momentum fractionalization that is only non-trivial for $2$, $3$, and $4$-fold rotation symmetry. The quantized topological response theory includes a discrete version of the shift, which binds fractional charge to disclinations and corners, a fractionally quantized angular momentum of disclinations, rotationally symmetric fractional charge polarization and its angular momentum counterpart, constraints on charge and angular momentum per unit cell, and quantized momentum bound to dislocations and units of area. The fractionally quantized charge polarization, which is non-trivial only on a lattice with $2$, $3$, and $4$-fold rotation symmetry, implies a fractional charge bound to lattice dislocations and a fractional charge per unit length along the boundary. An important role is played by a finite group grading on Burgers vectors, which depends on the point group symmetry of the lattice.
description: 25 + 10 pages; revised Appendix C and D; Added a new Table V in main text with other minor edits; added some additional references
PSF Deconvolution of the IFU Data and Restoration of Galaxy Stellar Kinematics
Creators: name: Chung, Haeun
name: Park, Changbom
name: Park, Yong-Sun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a performance test of the Point Spread Function deconvolution algorithm applied to astronomical Integral Field Unit (IFU) Spectroscopy data for restoration of galaxy kinematics. We deconvolve the IFU data by applying the Lucy-Richardson algorithm to the 2D image slice at each wavelength. We demonstrate that the algorithm can effectively recover the true stellar kinematics of the galaxy, by using mock IFU data with diverse combination of surface brightness profile, S/N, line-of-sight geometry and Line-Of-Sight Velocity Distribution (LOSVD). In addition, we show that the proxy of the spin parameter $λ_{R_{e}}$ can be accurately measured from the deconvolved IFU data. We apply the deconvolution algorithm to the actual SDSS-IV MaNGA IFU survey data. The 2D LOSVD, geometry and $λ_{R_{e}}$ measured from the deconvolved MaNGA IFU data exhibit noticeable difference compared to the ones measured from the original IFU data. The method can be applied to any other regular-grid IFU data to extract the PSF-deconvolved spatial information.
description: 40 pages, 38 figures, 2nd revision submitted to ApJS. Deconvolution code in Python3 is available at https://github.com/astrohchung/deconv. An example code to deconvolve a MaNGA IFU data and compare the 2D kinematics measured from the original and the deconvolved MaNGA data is provided (Partially reconstruct Figure 9)
title: Financial Constraint and Productivity: Evidence from Canadian SMEs
Creators: name: Cao, Shutao
name: Leung, Danny
Publisher: name: Bank of Canada
Year: 2016

description: The degree to which financial constraint is binding is often not directly observable in commonly used business data sets (e.g., Compustat). In this paper, we measure and estimate the likelihood of a firm being constrained by external financing using a data set of small- and medium-sized Canadian firms. Our measure separates the need for financing from the degree of constraint, conditional on the need for financing. We find that firm size, the current-debt-to-asset ratio and cash flow are robust indicators that can be used as a proxy for financial constraint. The total debt-to-asset ratio is not, however, a statistically significant indicator of financial constraint. In addition, firms with higher cash flow are less likely to need external financing and to be constrained if they do need it. We then estimate firm-level total factor productivity by taking into account the measured likelihood of binding financial constraint. Estimates of the coefficients for labour and capital in the structural estimation of the production function can be downward-biased if financial constraint is omitted, because production inputs are negatively correlated with the likelihood of being constrained by external financing. This in turn leads to an upward bias of total factor productivity estimates, which is about 4 per cent according to our estimation.
description: Le caractère astreignant des contraintes financières n’est souvent pas directement observable dans les ensembles de données sur les entreprises couramment utilisés (p. ex., Compustat). Dans cette étude, nous mesurons et estimons, par l’analyse d’un ensemble de données sur les petites et moyennes entreprises canadiennes, la probabilité qu’une entreprise se retrouve sous la contrainte du financement externe. Nous mesurons indépendamment le besoin de financement et le degré de contrainte, qui dépend du besoin de financement. Nous constatons également que la taille de l’entreprise, le ratio actuel de la dette à l’actif et les flux de trésorerie sont de solides indicateurs indirects de contraintes financières. Cependant, le ratio total de la dette à l’actif n’est pas un indicateur de contraintes financières statistiquement significatif. De plus, les entreprises ayant un niveau élevé de flux de trésorerie sont moins susceptibles d’avoir besoin de financement externe et, le cas échéant, de subir des contraintes. Nous estimons ensuite la productivité totale des facteurs au niveau de l’entreprise en prenant en compte la probabilité mesurée de contraintes financières astreignantes. Les estimations des coefficients du travail et du capital dans l’estimation structurelle de la fonction de production peuvent comporter un biais à la baisse si les contraintes financières ne sont pas prises en considération, car les facteurs de production ont une corrélation négative avec la probabilité de contrainte du financement externe. Il en résulte alors une surestimation de la productivité totale des facteurs, que nous évaluons à environ 4 %.
title: The philosophy of Pierre Gassendi: science and belief in seventeenth-century Paris and Provence
Creators: name: Makin, William Edward Anselm
Publisher: name: The Open University
Year: 1985

description: This is a multi-disciplinary study which examines the life and thought of Pierre Gassendi as a whole and in the context of seventeenthcentury Paris and Provence. There are sections on the political, religious and social fabric of Provence, on the Catholic Church and on Gassendi's view of his clerical function, on Absolute Monarchy and his intimate involvement with the theory and practice of politics. The justification for the sheer weight of minute investigative detail used in the historical side of this inquiry is that the printed texts of Gassendi, and of most of his circle, cannot be properly evaluated without this sort of inside knowledge of the circumstances in which they were written. One fruit of this method is the discovery that Gassendi was devoloping in almost total secrecy, from as early as 1618, his own Copernican physics, which in many ways must be regarded as a prototype of that deployed seventy years later in the PRINCIPIA. Evidence to support this argument is in the sections on the Galley Experiment of 1640, Gravitation, Atomism and Astronomy. It is the extent of Gassendi's co-operation with mathematicians, astronomers and scientists, and the fact that most of them must have shared the secret of his working assumption, that is the most remarkable aspect of the case. It indicates that all those contemporary rumours of underground scientific organisations were well-founded. Gassendi's secret Copernicanism seems to pale into insignificance beside my claim that he was not a believing Christian. A hitherto unclassified form of sceptical materialism, a sort of Pythagorean pantheism, was a major source of his interest in atomism, astronomy and nature in general. The evidence for this is presented in the sections on the Church, Life and Souls, Friendship, Atoms and Indivisibles. Whilst these views were relevant to his motivation they had, arguably, no direct influence on the structure of his science. This was constructed on the principle of separating metaphysics from science altogether and, within bounds of any given inquiry, keeping hypotheses-however attractive-separate from the observations and their analysis.
Argepara Gnezdilov & O'Brien 2008
Creators: name: Gnezdilov, Vladimir M.
name: O'Brien, Lois B.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Issidae
Argepara

description: Key to the species of Argepara
 1. Postclypeus flat, fastigium at nearly right angle (in lateral view) (Fig. 2); head and dorsum brown or dark brown excluding pale costal margins of fore wings (Fig. 2, 3); hind margin of pygofer without apical process (Fig. 33); capitulum of style without subapical tooth (in dorsal view) (Fig. 36).............................................................................................  A. semipellucida (Melichar)
 — Postclypeus strongly convex, forming a cone-shaped projection, fastigium at obtuse angle (in lateral view) (Fig. 4); head and dorsum from dark brown to black with median yellow vitta thru metope to wing tip (reduced in melanistic specimens) (Fig. 5, 6), with costal and median stripes joining at wing apex (Fig. 4); hind margin of pygofer with large apical process (Fig. 38); capitulum of style with large subapical tooth (in dorsal view) (Fig. 41).............................  A. lyra (Berg)
description: Published as part of Gnezdilov, Vladimir M. & O'Brien, Lois B., 2008, New taxa and combinations in Neotropical Issidae (Hemiptera: Fulgoroidea), pp. 1-26 in Insecta Mundi 2008 (31) on page 13, DOI: 10.5281/zenodo.4532901
Finite size scaling approach to dynamic storage allocation problem
Creators: name: Seyed-allaei, Hamed
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: It is demonstrated how dynamic storage allocation algorithms can be analyzed in terms of finite size scaling. The method is illustrated in the three simple cases of the it first-fit, next-fit and it best-fit algorithms, and the system works at full capacity. The analysis is done from two different points of view - running speed and employed memory. In both cases, and for all algorithms, it is shown that a simple scaling function exists and the relevant exponents are calculated. The method can be applied on similar problems as well.
description: 9 pages, 4 figures, will apear in Physica A
Economic evaluation of small dams in rain-fed region of Pothwar Plateau, Pakistan
Creators: name: Afzal, Muhammad Kamran
Publisher: name: figshare
Year: 2022
Subjects: subject: 79901 Agricultural Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
subject: FOS: Other agricultural sciences

description: The Small Dams Organization has constructed 55 small dams in the rainfedregion of Pothwar Plateau, Punjab in Pakistan. A study was conducted on thePothwar Plateau during 2019 to investigate the economic importance of small damsin the region, using Khasala and Jawa dams as the case study. The study tasksincluded: (i) a broad evaluation based on the performance of small dams in PothwarPlateau, and to analyze the economic benefits of small dams to farming communities;(ii) a comparative analysis of the Khasala and Jawa dams on the PothwarPlateau to identify the factors that influence agriculture production on irrigated (I)and non-irrigated (NI) farms in the area; and (iii) identification of key issues in orderto identify potential options to improve agriculture production on the PothwarPlateau. Data was collected through field observations, questionnaires, key informantinterviews, and formal and informal discussions with farmers and was collatedand reviewed quantitatively and qualitatively. It was found that the minimumwater pricing is the basic reason for wastage and excessive water consumption. Thecost of collecting water-charges from farmers is greater than the water-chargeswhich are received. This has resulted in delayed maintenance of the irrigationsystems which exacerbates water losses. It was also found from the survey offarmers of irrigated land and non-irrigated land that irrigation increases wheat yieldby 15%, maize yield by 42%, vegetable yield by 41–44% and fodder yield by 60%.The availability of wells on non-irrigated farms means that these farmers couldaccess timely irrigation, otherwise, their productivity gap would be greater if theywere forced to rely on rainfall only. Issues of concern which were identifiedincluded: (i) illegal diversion of irrigation water by influential farmers; (ii) inadequatemaintenance of irrigations systems and (iii) inefficient on-farm irrigation practiceswhich contributed to a total irrigation efficiency in the irrigated areas of less than30%; (iv) water rights and a water rotation systems are not implemented in thestudy area and (v) there is no water user association to deal with the waterchannels in the region which leads to clashes between users over the waterdistribution. A number of strategies that should be implemented to enhance agricultureproduction and efficient use of water resources are also identified.
Geneviève Chevallier-Randal
Creators: name: Leibowitch, Jacques (1942-2020)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021

description: Autres destinataires : Hervé Deslandes, Richard Cross. 1 fichier
title: On the Value of Virtual Currencies
Creators: name: Bolt, Wilko
name: van Oordt, Maarten
Publisher: name: Bank of Canada
Year: 2016

description: This paper develops an economic framework to analyze the exchange rate of virtual currency. Three components are important: first, the current use of virtual currency to make payments; second, the decision of forward-looking investors to buy virtual currency (thereby effectively regulating its supply); and third, the elements that jointly drive future consumer adoption and merchant acceptance of virtual currency. The model predicts that, as virtual currency becomes more established, the exchange rate will become less sensitive to the impact of shocks to speculators’ beliefs. This undermines the notion that excessive exchange rate volatility will prohibit widespread use of virtual currency.
description: Nous construisons un modèle d’analyse pour cerner les facteurs qui influent sur le taux de change des monnaies virtuelles. Trois éléments importent : tout d’abord, l’utilisation actuelle d’une monnaie virtuelle comme moyen de paiement; ensuite, la décision d’investisseurs prospectifs d’acheter de la monnaie virtuelle (et de contrôler ainsi l’offre de ce type de monnaie); enfin, les facteurs qui détermineront ensemble l’adoption d’une monnaie virtuelle par les consommateurs et son acceptation par les commerçants. Selon les prévisions du modèle, lorsqu’une monnaie virtuelle devient plus établie, son taux de change devient moins sensible aux répercussions des changements non anticipés de croyance des spéculateurs. Ce résultat va à l’encontre de l’idée voulant que la très forte volatilité de leur taux de change empêchera la large diffusion des monnaies virtuelles.
title: A dynamic physical energy model of the United Kingdom
Creators: name: Barrett, Mark Alexander
Publisher: name: The Open University
Year: 1982

description: This report describes the structure and simulation results of a dynamic physical model of the UK energy system. The model traces the hourly flows of energy from energy sources through various energy converters and stores to useful energy demands. Effects such as the temporal and climatic dependence of demands have been accounted for. Technical data has been collected so that it is possible to simulate the performance of the system as it was in 1976 or as it might be at some future date. The model has been validated against measured data and has been used to simulate the UK system with changed demands and new conservation and supply technologies.
Causal datasheet: An approximate guide to practically assess Bayesian networks in the real world
Creators: name: Butcher, Bradley
name: Huang, Vincent S.
name: Reffin, Jeremy
name: Sgaier, Sema K.
name: Charles, Grace
name: Quadrianto, Novi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Performance (cs.PF)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In solving real-world problems like changing healthcare-seeking behaviors, designing interventions to improve downstream outcomes requires an understanding of the causal links within the system. Causal Bayesian Networks (BN) have been proposed as one such powerful method. In real-world applications, however, confidence in the results of BNs are often moderate at best. This is due in part to the inability to validate against some ground truth, as the DAG is not available. This is especially problematic if the learned DAG conflicts with pre-existing domain doctrine. At the policy level, one must justify insights generated by such analysis, preferably accompanying them with uncertainty estimation. Here we propose a causal extension to the datasheet concept proposed by Gebru et al (2018) to include approximate BN performance expectations for any given dataset. To generate the results for a prototype Causal Datasheet, we constructed over 30,000 synthetic datasets with properties mirroring characteristics of real data. We then recorded the results given by state-of-the-art structure learning algorithms. These results were used to populate the Causal Datasheet, and recommendations were automatically generated dependent on expected performance. As a proof of concept, we used our Causal Datasheet Generation Tool (CDG-T) to assign expected performance expectations to a maternal health survey we conducted in Uttar Pradesh, India.
Multi-View Collaborative Network Embedding
Creators: name: Ata, Sezin Kircali
name: Fang, Yuan
name: Wu, Min
name: Shi, Jiaqi
name: Kwoh, Chee Keong
name: Li, Xiaoli
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Real-world networks often exist with multiple views, where each view describes one type of interaction among a common set of nodes. For example, on a video-sharing network, while two user nodes are linked if they have common favorite videos in one view, they can also be linked in another view if they share common subscribers. Unlike traditional single-view networks, multiple views maintain different semantics to complement each other. In this paper, we propose MANE, a multi-view network embedding approach to learn low-dimensional representations. Similar to existing studies, MANE hinges on diversity and collaboration - while diversity enables views to maintain their individual semantics, collaboration enables views to work together. However, we also discover a novel form of second-order collaboration that has not been explored previously, and further unify it into our framework to attain superior node representations. Furthermore, as each view often has varying importance w.r.t. different nodes, we propose MANE+, an attention-based extension of MANE to model node-wise view importance. Finally, we conduct comprehensive experiments on three public, real-world multi-view networks, and the results demonstrate that our models consistently outperform state-of-the-art approaches.
description: Accepted for publication in the ACM Transactions on Knowledge Discovery from Data, TKDD
Third Harmonics of the AC Magnetic Susceptibility: a method for the study of flux dynamics in High Temperature Superconductors
Creators: name: Polichetti, M.
name: Adesso, M. G.
name: Pace, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The temperature dependence of the 1st and 3rd harmonics of the AC magnetic susceptibility has been measured on melt grown YBCO samples for different frequencies and amplitudes of the AC magnetic field and intensity of a contemporaneously applied DC field. With the help of critical state models and of numerical simulations, we have devised a novel method, based on the combined analysis of the 1st and the 3rd harmonics that allows to distinguish different temperature ranges dominated by the different dissipative magnetic flux regimes. In particular, we identified three principal zones in the temperature dependence of the real part of the 3rd harmonic: the zone 1, in the temperature range below the peak of the imaginary part of the 1st harmonic, Tp, and the zone 2, characterized by negative values in a temperature region of the real part of the 3rd harmonics, just above Tp, both dominated by the creep regime; the zone 3, just below Tc, in which we revealed the presence of Thermally Assisted Flux Flow (TAFF). By the identification of these zones, an estimation of the value of the pinning potential can be obtained.
description: 28 pages, 8 figures, to be published on Europ. Phys. Journ. B
Ordered ground states of kagome magnets with generic exchange anisotropy
Creators: name: Benton, Owen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: There is a growing family of rare-earth kagome materials with dominant nearest-neighbor interactions and strong spin orbit coupling. The low symmetry of these materials makes theoretical description complicated, with six distinct nearest-neighbor coupling parameters allowed. In this Article, we ask what kinds of classical, ordered, ground states can be expected to occur in these materials, assuming generic (i.e. non-fine-tuned) sets of exchange parameters. We use symmetry analysis to show that there are only five distinct classical ground state phases occurring for generic parameters. The five phases are: (i) a coplanar, 2-fold degenerate, state with vanishing magnetization (${\sf A_1}$), (ii) a noncoplanar, 2-fold degenerate, state with magnetization perpendicular to the kagome plane (${\sf A_2}$), (iii) a coplanar, 6-fold degenerate, state with magnetization lying within the kagome plane (${\sf E}$-coplanar), (iv) a noncoplanar, 6-fold degenerate, state with magnetization lying within a mirror plane of the lattice (${\sf E}$-noncoplanar$_{6}$), (v) a noncoplanar, 12-fold degenerate, state with magnetization in an arbitrary direction (${\sf E}$-noncoplanar$_{12}$). All five are translation invariant (${\bf q}=0$) states. Having found the set of possible ground states, the ground state phase diagram is obtained by comparing numerically optimized energies for each possibility as a function of the coupling parameters. The state ${\sf E}$ noncoplanar$_{12}$ is extremely rare, occupying $<1\%$ of the full phase diagram, so for practical purposes there are four main ordered states likely to occur in anisotropic kagome magnets with dominant nearest neighbor interactions. These results can aid in interpreting recent experiments on ``tripod kagome'' systems R$_3$A$_2$Sb$_3$O$_{14}$, as well as materials closer to the isotropic limit such as Cr- and Fe- jarosites.
$C^1$-generic dynamics: tame and wild behaviour
Creators: name: Bonatti, Christian
Publisher: name: arXiv
Year: 2003
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37C20, 37D30, 37C29

description: This paper gives a survey of recent results on the maximal transitive sets of $C^1$-generic diffeomorphisms.
Fermion propagators in QED3 with velocity anisotropies
Creators: name: Thomas, Iorwerth Owain
name: Hands, Simon
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: QED3 with fermi and gap anisotropies is considered to be a candidate effective field theory of high temperature superconductors. Simulations of a variant of the theory have demonstrated that there is evidence consistent with a phase transition to a chirally restored phase as the velocity anisotropy increases, and that the correlation lengths of pions in spatial directions behave in a manner consistent with the anisotropy being a relevant parameter of the theory. We present the first measurements of the fermion propagator in Landau gauge for this theory and suggest that the structure of this theory is more complex than previously thought.
description: 6 pages, 3 figures, LATEX(POS), Parallel talk (Spin and Higgs) given at LATTICE 2005 (XXIII International Symposium on Lattice Field Theory, School of Mathematics, Trinity College, Dublin 25th-30th July 2005). This version corrects a mistake in the citations
title: Differential diagnosis of psycholinguistic disabilities of poor readers and some remedial procedures
Creators: name: Naylor, J. G.
Publisher: name: The Open University
Year: 1982

description: The aims of the study were (a) to investigate the use of the Illinois Test of Psycholinguistic Abilities in the diagnosis of psycholinguistic deficit in first year junior schoolchildren having reading difficulties, and (b) to examine the effects of three educational programmes on the modification of the children's psycholinguistic abilities and reading attainments. From a population of over 1,000 children considered to be at educational risk because of poor reading attainment, a sample of 60 children was identified from four junior schools (i. e. 15 children in each school), selected at random from those schools having a high incidence of poor readers. The 60 children were tested on the ITPA, after which their scores were subjected to a profile analysis. This revealed marked deficits in the areas of Auditory Closure and Visual Sequential Memory. Three intervention programmes were constructed. The first was designed to ameliorate the specific disabilities in the two areas specified above. The second was a diffuse approach to language development which stressed the general training of oral language and verbal intelligence rather than specific training in psycholinguistic processes. A third group of children acting as a control group received a number programme. The children were retested on the ITPA and on various measures of reading attainment at the end of a twelve week treatment period and again ten months later. At the end of the experiment both groups receiving language training obtained higher composite psycholinguistic ages on the ITPA than the control group, but the pattern of psycholinguistic deficits was modified only in the group receiving specific training. Both language groups scored significantly higher than the control group on the tests of reading attainment. The results are interpreted as giving qualified support for the use of the ITPA as a test of differential diagnosis and in providing suggestions for remedial programmes.
title: Starting from a Blank Page? Semantic Similarity in Central Bank Communication and Market Volatility
Creators: name: Ehrmann, Michael
name: Talmi, Jonathan
Publisher: name: Bank of Canada
Year: 2016

description: Press releases announcing and explaining monetary policy decisions play a critical role in the communication strategy of central banks. Because of their market-moving potential, it is particularly important how they are drafted. Often, central banks start from the previous statement and update the earlier text with only small changes. This way, it is straightforward to compare statements and see how the central bank’s thinking has evolved. This paper studies to what extent such similarity in central bank statements matters for the reception of their content in financial markets. Using the case of the Bank of Canada (the G7 central bank that had to rely the least on unconventional monetary policy following the global financial crisis and has therefore broadly continued standard monetary policy communications), the paper shows that press releases with larger differences in wording lead to higher volatility in financial markets, suggesting that their content is more difficult to absorb. At the same time, while press releases that are similar to the previous one generate less market volatility, once their wording is updated, volatility increases substantially.
description: Les communiqués de presse annonçant et expliquant les décisions en matière de politique monétaire jouent un rôle essentiel dans la stratégie de communication des banques centrales. Étant donné l’influence que ces communiqués peuvent avoir sur les marchés, la façon dont ils sont rédigés revêt une importance particulière. Souvent, les banques centrales se basent sur la déclaration précédente, qu’elles mettent à jour en n’apportant que de petits changements. Il est alors facile de comparer les déclarations et de faire le point sur l’évolution des réflexions des banques centrales. Cette étude analyse la mesure dans laquelle une telle similarité des déclarations des banques centrales influe sur la réception de leur contenu dans les marchés financiers. Les auteurs, qui prennent pour exemple la Banque du Canada (la banque centrale d’un pays du G7 qui a dû le moins compter sur des mesures de politique monétaire non traditionnelles après la crise financière mondiale et qui a par conséquent, d’une manière générale, maintenu sa stratégie de communication au sujet de la politique monétaire), montrent que les communiqués présentant des différences de formulation plus importantes entraînent une accentuation de la volatilité des marchés financiers, ce qui laisse entendre que leur contenu est plus difficile à assimiler. Parallèlement, les communiqués qui se ressemblent d’une publication à l’autre génèrent une volatilité moindre des marchés, mais cette dernière s’intensifie considérablement à partir du moment où la formulation est actualisée.
title: Output Comovement and Inflation Dynamics in a Two-Sector Model with Durable Goods: The Role of Sticky Information and Heterogeneous Factor Markets
Creators: name: Kitamura, Tomiyuki
name: Takamura, Tamon
Publisher: name: Bank of Canada
Year: 2016

description: In a simple two-sector New Keynesian model, sticky prices generate a counterfactual negative comovement between the output of durable and nondurable goods following a monetary policy shock. We show that heterogeneous factor markets allow any combination of strictly positive price stickiness to generate positive output comovement. Even if the prices of durable goods are flexible, adding sticky information ensures that the output of both sectors moves in the same direction. Furthermore, we find that the combination of sticky information and heterogeneous factor markets produces hump-shaped responses in both sectoral output and inflation, as observed in a vector-autoregression analysis. In contrast to backward indexation to past inflation, which is often assumed in the literature, sticky information leads to a hump-shaped response in the inflation of flexibly priced goods. Finally, the estimated information stickiness through the minimum-distance estimation method suggests that information rigidity is stronger in residential investment than nondurable goods and services.
description: Dans un modèle simple de type nouveau keynésien à deux secteurs, la rigidité des prix engendre une covariation négative contrefactuelle de la production de biens durables et de biens non durables à la suite d’un choc monétaire. Nous montrons que des marchés de facteurs hétérogènes permettent toute combinaison de rigidité des prix strictement positive pour générer une covariation de production positive. Même si les prix des biens durables sont flexibles, l’ajout d’information rigide fait évoluer la production des deux secteurs dans le même sens. De plus, nous constatons qu’une combinaison d’information rigide et de marchés de facteurs hétérogènes engendre des réactions dynamiques en forme de bosse dans le cas de la production et de l’inflation sectorielles, comme il a été observé dans une analyse de vecteurs autorégressifs. Par contraste avec l’indexation rétrospective sur l’inflation passée, souvent présumée dans la littérature, la rigidité de l’information produit une réaction dynamique en forme de bosse pour l’inflation des biens à prix flexible. Enfin, les résultats issus de l’application de la méthode d’estimation de la distance minimale donnent à penser que l’information est plus rigide dans le cas de l’investissement résidentiel que dans celui des biens non durables et des services.
Traxus fulvus Metcalf 1923
Creators: name: Gnezdilov, Vladimir M.
name: O'Brien, Lois B.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Issidae
Traxus
Traxus fulvus

description: Traxus fulvus Metcalf 1923 (Fig. 8)
 Traxus fulvus Metcalf 1923: 189, pls. 42, 52, 62, 65.
 Examined material: USA: Texas, Brownsville: 1 M, 1 F, 31.V.[19]33, P.W. Oman leg. (USNM); 2 M, 3F, Cameron Co, Sabal Palm Grove, 19.VII.1982, C.W. & L. O’Brien & G. Wibmer leg. (ZIN, LBOB,); 2 M, same except 20.VII.1982, (LBOB); 3 M, 1F, same except 4.V.1993, O’Briens & Marshall leg. (LBOB); 3 M, 2F, Hidalgo Co., D.J. & J. N. Knull leg. (LBOB, OSU).
description: Published as part of Gnezdilov, Vladimir M. & O'Brien, Lois B., 2008, New taxa and combinations in Neotropical Issidae (Hemiptera: Fulgoroidea), pp. 1-26 in Insecta Mundi 2008 (31) on page 15, DOI: 10.5281/zenodo.4532901
Unveiling the strong interaction among hadrons at the LHC
Creators: name: ALICE Collaboration
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: One of the key challenges for nuclear physics today is to understand from first principles the effective interaction between hadrons with different quark content. First successes have been achieved using techniques that solve the dynamics of quarks and gluons on discrete space-time lattices. Experimentally, the dynamics of the strong interaction have been studied by scattering hadrons off each other. Such scattering experiments are difficult or impossible for unstable hadrons and so high-quality measurements exist only for hadrons containing up and down quarks. Here we demonstrate that measuring correlations in the momentum space between hadron pairs produced in ultrarelativistic proton-proton collisions at the CERN Large Hadron Collider (LHC) provides a precise method with which to obtain the missing information on the interaction dynamics between any pair of unstable hadrons. Specifically, we discuss the case of the interaction of baryons containing strange quarks (hyperons). We demonstrate how, using precision measurements of p-omega baryon correlations, the effect of the strong interaction for this hadron-hadron pair can be studied with precision similar to, and compared with, predictions from lattice calculations. The large number of hyperons identified in proton-proton collisions at the LHC, together with an accurate modelling of the small (approximately one femtometre) inter-particle distance and exact predictions for the correlation functions, enables a detailed determination of the short-range part of the nucleon-hyperon interaction.
description: 21 pages, 4 captioned figures, authors from page 16, published version, figures at http://alice-publications.web.cern.ch/node/6217
Discovering the hidden structure of financial markets through bayesian modelling
Creators: name: Griveau-Billion, Théophile
Publisher: name: Imperial College London
Year: 2020

description: Understanding what is driving the price of a financial asset is a question that is currently mostly unanswered. In this work we go beyond the classic one step ahead prediction and instead construct models that create new information on the behaviour of these time series. Our aim is to get a better understanding of the hidden structures that drive the moves of each financial time series and thus the market as a whole. We propose a tool to decompose multiple time series into economically-meaningful variables to explain the endogenous and exogenous factors driving their underlying variability. The methodology we introduce goes beyond the direct model forecast. Indeed, since our model continuously adapts its variables and coefficients, we can study the time series of coefficients and selected variables. We also present a model to construct the causal graph of relations between these time series and include them in the exogenous factors. Hence, we obtain a model able to explain what is driving the move of both each specific time series and the market as a whole. In addition, the obtained graph of the time series provides new information on the underlying risk structure of this environment. With this deeper understanding of the hidden structure we propose novel ways to detect and forecast risks in the market. We investigate our results with inferences up to one month into the future using stocks, FX futures and ETF futures, demonstrating its superior performance according to accuracy of large moves, longer-term prediction and consistency over time. We also go in more details on the economic interpretation of the new variables and discuss the created graph structure of the market.
Paralixes fowleri Gnezdilov & O'Brien 2008, comb. n.
Creators: name: Gnezdilov, Vladimir M.
name: O'Brien, Lois B.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Issidae
Paralixes
Paralixes fowleri

description: Paralixes fowleri (Melichar 1906), comb. n.
 Hysteropterum fowleri Melichar 1906: 149, nom. nov. pro H. montanum Fowler, nec Becker 1865.
 Hysteropterum montanum Fowler 1904: 120, pl.12, fig. 12, 12a.
 Examined material: Mexico: M, syntype of Hysteropterum montanum Fowler, [Durango] Ciudad, 8100 ft., Forrer leg. (BMNH).
 Supplementary diagnosis: Metope flat with distinct median carina. Clypeus with median carina. Coryphe transverse (2.3 times as wide as long). Scutellum with distinct median and lateral carinae. Fore wings elongate, without hypocostal plate. Radius, median, and cubitus anterior bifurcate (R 2 M 2 CuA 2). Hind wings rudimentary. Hind tibia with 2-3 lateral teeth (1 small tooth proximally and 2 large teeth distally). Metatarsomere I with 2 intermediate socle setae.
 Male. Ventral phallobase lobe wide, narrowing apically. Aedeagus with a pair of short ventral hooks.
 Body length. 5.8 mm.
 Note: The species is placed in the genus provisionally.
description: Published as part of Gnezdilov, Vladimir M. & O'Brien, Lois B., 2008, New taxa and combinations in Neotropical Issidae (Hemiptera: Fulgoroidea), pp. 1-26 in Insecta Mundi 2008 (31) on page 15, DOI: 10.5281/zenodo.4532901
Massive star formation: Nurture, not nature
Creators: name: Bonnell, I. A.
name: Vine, S. G.
name: Bate, M. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the physical processes which lead to the formation of massive stars. Using a numerical simulation of the formation of a stellar cluster from a turbulent molecular cloud, we evaluate the relevant contributions of fragmentation and competitive accretion in determining the masses of the more massive stars. We find no correlation between the final mass of a massive star, and the mass of the clump from which it forms. Instead, we find that the bulk of the mass of massive stars comes from subsequent competitive accretion in a clustered environment. In fact, the majority of this mass infalls onto a pre-existing stellar cluster. Furthermore, the mass of the most massive star in a system increases as the system grows in numbers of stars and in total mass. This arises as the infalling gas is accompanied by newly formed stars, resulting in a larger cluster around a more massive star. High-mass stars gain mass as they gain companions, implying a direct causal relationship between the cluster formation process, and the formation of higher-mass stars therein.
description: 8 pages, accepted for publication in MNRAS. Version including hi-res colour postscript figure available at http://star-www.st-and.ac.uk/~sgv/ps/massnurt.ps.gz
On the Sobolev and $L^p$-Stability of the $L^2$-projection
Creators: name: Diening, Lars
name: Storn, Johannes
name: Tscherpel, Tabea
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N30, 65N50, 65N12, 65M60

description: We show stability of the $L^2$-projection onto Lagrange finite element spaces with respect to (weighted) $L^p$ and $W^{1,p}$-norms for any polynomial degree and for any space dimension under suitable conditions on the mesh grading. This includes $W^{1,2}$-stability in two space dimensions for any polynomial degree and meshes generated by newest vertex bisection. Under realistic but conjectured assumptions on the mesh grading in three dimensions we show $W^{1,2}$-stability for all polynomial degrees. We also propose a modified bisection strategy that leads to better $W^{1,p}$-stability. Moreover, we investigate the stability of the $L^2$-projection onto Crouzeix-Raviart elements.
Economic Value of Chickpea Production Consumption and World Trade
Creators: name: Afzal, Muhammad Kamran
Publisher: name: figshare
Year: 2022
Subjects: subject: 70302 Agronomy
subject: FOS: Agriculture, forestry and fisheries

description: Chickpea is a valuable crop that offers nutritiousand healthy food for a growing global populationand it will become much more essential withchanging climate. In most countries around theworld, nutritionists related to health and food haverecently emphasized the nutritional value of chickpeafor body health and nutrition. Chickpea rankssecond after the beans having a mean annual productionof about 12.8 million tonnes with the major productionoriginates from India. In recent years, thecultivated area of chickpea has expanded, reachingan estimated 13.7 million hectares. Since 1961, annualproduction per unit area has increased at the rateof around 6 kg/ha. Annually, around 2.2 milliontonnes of chickpea is available in the world marketto accomplish countries' requirements when domesticsupply is insufficient to meet demand. Leadingexporters include Australia, Russia, India, and Mexico.Chickpea comes in two types: Desi and Kabuli.The Desi type is distinguished by its thin, angularseeds that come in a variety of colors and are spottedsometimes. The type Kabuli is separated by largeseeds size, smooth surfaces, and a lighter color. InSouth Asia, chickpea is commonly used in ‘dal’ and‘hummus’ and is popular around the world. Chickpeagermplasm yield capacity has slowly but steadily increasedby the research efforts at ICARDA, ICRISAT,and the conduction of national programs.
Magnetic susceptibility and heat capacity investigations of the unconventional spin-chain compound Sr3CuPtO6
Creators: name: Majumdar, S.
name: Hardy, V.
name: Lees, M. R.
name: Paul, D. McK.
name: Rousseliere, H.
name: Grebille, D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The Heisenberg spin chain compound Sr3CuPtO6 is investigated by magnetic susceptibility and heat capacity measurements. Sr3CuPtO6 has an unconventional chain structure in the sense that i) the spin half copper atoms are arranged in a zigzag chain structure, and ii) neighboring Cu atoms along the chains are separated by spin zero platinum atoms. We report that this compound shows broad features in the temperature dependence of both the magnetic contribution to the heat capacity and the magnetic susceptibility. Despite the unconventional nature of the spin chain structure, this set of data exhibits good agreement with theoretical models for a classical S = 1/2 Heisenberg spin chain compound. The values of the intra-chain coupling constant, obtained by different techniques, are found to be very close to each other. The low temperature heat capacity data (below ~ 6 K) exhibit a deviation from the theoretically expected behavior, which could be related to a small energy gap in the spin excitation spectrum.
description: 7 pages, 4 figures included, communicated for publication
Counterflow-Induced Inverse Energy Cascade in Three-Dimensional Superfluid Turbulence
Creators: name: Polanco, Juan Ignacio
name: Krstulovic, Giorgio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Finite-temperature quantum turbulence is often described in terms of two immiscible fluids that can flow with a non-zero mean relative velocity. Such out-of-equilibrium state is known as counterflow superfluid turbulence. We report here the emergence of a counterflow-induced inverse energy cascade in three-dimensional superfluid flows by performing extensive numerical simulations of the Hall-Vinen-Bekarevich-Khalatnikov model. As the intensity of the mean counterflow is increased, an abrupt transition, from a fully three-dimensional turbulent flow to a quasi two-dimensional system exhibiting a split cascade, is observed. The findings of this work could motivate new experimental settings to study quasi two-dimensional superfluid turbulence in the bulk of three-dimensional experiments. They might also find applications beyond superfluids in systems described by more than one fluid component.
description: 5 pages, 4 figures