cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Financial innovation and monetary policy: Italy versus the United States
Creators: name: VACIAGO, G.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: Financial innovation, monetary control, Italy, U.S., financial system
subject: E52, E44

description: Financial innovation has been linked to the problem of monetary control in many countries. In the United States it has been suggested that high and volatile interest rates have created innovations that have reduced the effectiveness of monetary policy. There is an alternative view which believes that ineffective monetary control has created volatility in financial markets. This article considers recent developments in the Italian and United States financial system, in order to compare the evolution of innovation and its impact on monetary control. JEL: E52, E44
description: PSL Quarterly Review, V. 38, N. 155 (1985)
title: The extent to which occupational commitment explains variances in ERP success
Creators: name: Ford, Gabrielle
Publisher: name: The Open University
Year: 2012

description: The objective of this research was to investigate the relationship between Occupational Community of Practice Strength of Commitment and Perceived Usefulness of ERP systems, as mediated by the barriers to the knowledge transfer process, adaptation and perceptions of work practice compatibility. A Relativist approach was chosen, using a questionnaire as the primary data collection method, and PLS-SEM as the primary data analysis method. A survey instrument that was designed to measure the relationships between these variables was administered. The results led to the conclusions that Occupational Strength of Commitment had little effect on Work Practice Compatibility, but that Compatibility with Preferred Practices had a significant effect on Perceived Usefulness. It therefore became evident that in order to enhance ERP success, it was necessary to focus on the variables that influence perceptions of Compatibility with Preferred Practices when implementing ERP systems. These variables were identified based on the results of the data, and then synthesized into a conceptual model of ERP success in order to meet the research objective. Due to the limitations of the study, further research is recommended to test this conceptual model. The hypothesized relationships that could not be supported by the data are also identified for further research.
Monte-Carlo experiments on star-cluster induced integrated-galaxy IMF variations
Creators: name: Weidner, Carsten
name: Kroupa, Pavel
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: As most if not all stars are born in stellar clusters the shape of the mass function of the field stars is not only determined by the initial mass function of stars (IMF) but also by the cluster mass function (CMF). In order to quantify this Monte-Carlo simulations were carried out by taking cluster masses randomly from a CMF and then populating these clusters with stars randomly taken from an IMF. Two cases were studied. Firstly the star masses were added randomly until the cluster mass was reached. Secondly a number of stars, given by the cluster mass divided by an estimate of the mean stellar mass and sorted by mass, were added until the desired cluster mass was reached. Both experiments verified the analytical results of Kroupa & Weidner (2003) that the resulting integrated stellar initial mass function is a folding of the IMF with the CMF and therefore steeper than the input IMF above 1 Msol.
description: 2 pages, 1 figure, uses kapproc.cls. Contributed poster presented at the conference on "IMF@50: The Stellar Initial Mass Function Fifty Years Later" held at Abbazia di Spineto, Siena, Italy, May 2004. To be published by Kluwer Academic Publishers, ed. E. Corbelli, F. Palla, and H. Zinnecker
The intervention and financing mechanisms of the EMS and the role of the ECU
Creators: name: MICOSSI, S.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: EMS, intervention, foreign exchange markets
subject: E42, F31, F36

description: The European Monetary System (EMS) embodies an agreement that national currencies in participating countries will be managed so as to maintain an agreed parity with other currencies. Although some flexibility is allowed, essentially governments must ensure that parities are maintained. The problem with the agreement is that there is no explicit statement as to how intervention on foreign exchange markets to maintain parity should be carried out. The author considers the background to the development of the EMS and examines how the parity agreement will allow the European Currency Unit to develop to a true international currency. JEL: E42, F31, F36
description: PSL Quarterly Review, V. 38, N. 155 (1985)
Hybrid Particle-Field Molecular Dynamics Under Constant Pressure
Creators: name: Bore, Sigbjørn Løland
name: Kolli, Hima Bindu
name: De Nicola, Antonio
name: Byshkin, Maksym
name: Kawakatsu, Toshihiro
name: Milano, Giuseppe
name: Cascella, Michele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Hybrid particle-field methods are computationally efficient approaches for modelling soft matter systems. So far applications of these methodologies have been limited to constant volume conditions. Here, we reformulate particle-field interactions to represent systems coupled to constant external pressure. First, we show that the commonly used particle-field energy functional can be modified to model and parameterize the isotropic contributions to the pressure tensor without interfering with the microscopic forces on the particles. Second, we employ a square gradient particle-field interaction term to model non-isotropic contributions to the pressure tensor, such as in surface tension phenomena. This formulation is implemented within the hybrid particle-field molecular dynamics approach and is tested on a series of model systems. Simulations of a homogeneous water box demonstrate that it is possible to parameterize the equation of state to reproduce any target density for a given external pressure. Moreover, the same parameterization is transferable to systems of similar coarse-grained mapping resolution. Finally, we evaluate the feasibility of the proposed approach on coarse-grained models of phospholipids, finding that the term between water and the lipid hydrocarbon tails is alone sufficient to reproduce the experimental area per lipid in constant-pressure simulations, and to produce a qualitatively correct lateral pressure profile.
description: 24 pages, 7 figures
The “new growth path” in Hungary
Creators: name: BALASSA, B.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: Hungary, reform, growth
subject: O52

description: The work analyses changes in economic policies in Hungary that began with the December 1978 resolution of the Central Committee of the Hungarian Socialist Workers’ Party. Changes in economic policies had the double objective of remedying the disequilibrium in Hungary’s balance of payments and reestablishing the reform process that began in 1968 but was subverted in various respects after 1972. The new policies have been given the collective name ‘the new growth path’. JEL: O52
description: PSL Quarterly Review, V. 38, N. 155 (1985)
Symplectic Analysis of Time-Frequency Spaces
Creators: name: Cordero, Elena
name: Giacchi, Gianluca
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 42B35, 42A38

description: We present a different symplectic point of view in the definition of weighted modulation spaces $M^{p,q}_m(\mathbb{R}^d)$ and weighted Wiener amalgam spaces $W(\mathcal{F} L^p_{m_1},L^q_{m_2})(\mathbb{R}^d)$. All of the classical time-frequency representations, such as the short-time Fourier transform (STFT), the $τ$-Wigner distributions and the ambiguity function, can be written as metaplectic Wigner distributions $μ(\mathcal{A})(f\otimes \bar{g})$, where $μ(\mathcal{A})$ is the metaplectic operator and $\mathcal{A}$ is the associated symplectic matrix. Namely, time-frequency representations can be represented as images of metaplectic operators, which become the real protagonists of time-frequency analysis. In [E. Cordero and L. Rodino (2022) "Characterization of Modulation Spaces by symplectic representations and applications to Schrödinger equations", arXiv:2204.14124], the authors suggest that any metaplectic Wigner distribution that satisfies the so-called "shift-invertibility" condition can replace the STFT in the definition of modulation spaces. In this work, we prove that shift-invertibility alone is not sufficient, but it has to be complemented by an upper-triangularity condition for this characterization to hold, whereas a lower-triangularity property comes in to play for Wiener amalgam spaces. The shift-invertibility property is necessary: Ryhaczek and and conjugate Ryhaczek distributions are not shift-invertible and they fail the characterization of the above spaces. We also exhibit examples of shift-invertible distributions without upper-tryangularity condition which do not define modulation spaces. Finally, we provide new families of time-frequency representations that characterize modulation spaces, with the purpose of replacing the time-frequency shifts with other atoms that allow to decompose signals differently, with possible new outcomes in applications.
Index of minimal hypersurfaces in real projective spaces
Creators: name: Chen, Shuli
Publisher: name: arXiv
Year: 2023
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We prove that for an embedded unstable one-sided minimal hypersurface of the $(n+1)$-dimensional real projective space, the Morse index is at least $n+2$, and this bound is attained by the cubic isoparametric minimal hypersurfaces. We also show that there exist closed embedded two-sided minimal surfaces in the 3-dimensional real projective space of each odd index by computing the index of the Lawson surfaces.
description: Final version, 19 pages
Collective dynamics of the fireball
Creators: name: Tomasik, Boris
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: I analyse the identified single-particle p_t spectra and two-pion Bose-Einstein correlations from RHIC. They indicate a massive transverse expansion and rather short lifetime of the system. The quantitative analysis in framework of the blast-wave model yields, however, unphysical results and suggests that the model may not be applicable in description of two-particle correlations. I then discuss generalisations of the blast-wave model to non-central collisions and the question how spatial asymmetry can be disentangled from flow asymmetry in measurements of v_2 and azimuthally sensitive HBT radii.
description: proceedings of 18 NPD conference of the EPS "Phase transitions in strongly interacting matter", Prague, August 23-29, 2004, 10 pages, 5 figures, to be published in Nuclear Physics A
Bank loans or bonds: some lessons of historical experience
Creators: name: ARNDT, H.W.
name: DRAKE, P.J.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: International debt crisis, bond markets, banks, Third World, development
subject: F34, G12, N24,

description: The continuing international debt crisis has led some commentators to suggest that bond markets rather than banks would be a more appropriate method of financing development in the Third World. It has been suggested that the bond market is a more appropriate mechanism for assessing risk and channelling long-term development funds. In fact, until the 1930s, most development finance was provided by the bond market, and it was only the collapse of capital markets in the 1930s that stopped this function from continuing. By examining the historical experience, the authors consider the potential for bond financing and the conditions which would be necessary for its revival. JEL: F34, G12, N24,
description: PSL Quarterly Review, V. 38, N. 155 (1985)
Recollections of an economist
Creators: name: KALDOR, N.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: Nicholas Kaldor, biography, recollections
subject: B31

description: The paper is a contribution to a series of recollections and reflections on the professional experiences of distinguished economists which the Banca Nazionale del Lavoro Quarterly Review started in 1979. In it Nicholas Kaldor describes how he came to be an economist and his subsequent intellectual development. JEL: B31
description: PSL Quarterly Review, V. 39, N. 156 (1986)
The problem of time and gauge invariance in the quantization of cosmological models. II. Recent developments in the path integral approach
Creators: name: Shestakova, T. P.
name: Simeone, C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The paper is the second part of the work devoted to the problem of time in quantum cosmology. Here we consider in detail two approaches within the scope of Feynman path integration scheme: The first, by Simeone and collaborators, is gauge-invariant and lies within the unitary approach to a consistent quantization of gravity. It is essentially based on the idea of deparametrization (reduction to physical degrees of freedom) as a first step before quantization. The other approach by Savchenko, Shestakova and Vereshkov is rather radical. It is an attempt to take into account peculiarities of the Universe as a system without asymptotic states that leads to the conclusion that quantum geometrodynamics constructed for such a system is, in general, a gauge-noninvariant theory. However, this theory is shown to be mathematically consistent and the problem of time is solved in this theory in a natural way.
description: 13 pages, to be published in Grav. Cosmol. For the first part of the paper, see gr-qc/0409114
The new-classical contribution to macroeconomics
Creators: name: LAIDLER, D.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: New-classical economics, monetarism, macroeconomics, behaviour
subject: E13

description: This work is devoted to assessing New-Classical ideas, and to asking what of lasting importance this school of macroeconomics has contributed since the early 1970s. It deals in turn with the relationship between New-Classical Economics and Monetarism, the relative explanatory power of these two bodies of doctrine over empirical evidence, and the claims of New-Classical Economics to embody a superior analytic method. The author argues that, although the particular ways in which New-Classical Macroeconomics has applied its basic ideas are unnecessarily restrictive, its stress on equilibrium behaviour conditioned by the state of individual agents’ expectations as a basis for macro modelling is nevertheless valuable. JEL: E13
description: PSL Quarterly Review, V. 39, N. 156 (1986)
On the $L^p$ boundedness of the Wave Operators for fourth order Schrödinger operators
Creators: name: Goldberg, Michael
name: Green, William R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the fourth order Schrödinger operator $H=Δ^2+V(x)$ in three dimensions with real-valued potential $V$. Let $H_0=Δ^2$, if $V$ decays sufficiently and there are no eigenvalues or resonances in the absolutely continuous spectrum of $H$ then the wave operators $W_{\pm}= s\,-\,\lim_{t\to \pm \infty} e^{itH}e^{-itH_0}$ extend to bounded operators on $L^p(\mathbb R^3)$ for all $1
description: 22 pages. Fixed typos and addressed comments from referee report. To appear in the Trans. Amer. Math. Soc
Additional file 1 of Development and validation of an infant facial skin assessment tool: a prospective observational study
Creators: name: Matsubara, Manami
name: Haruna, Megumi
name: Yonezawa, Kaori
name: Yokoyama, Moeri
name: Tahara-Sasagawa, Emi
name: Hikita, Naoko
name: Nakamura, Yoshie
name: Mizuno, Yoko
name: Sanada, Hiromi
name: Tamai, Nao
name: Abe, Masatoshi
name: Kashiwabara, Kosuke
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1: Fig S1. Relationship between number of infants who had any skin problems and the cure period (days). Fig S2. Relationship between number of infants who had erythema and the cure period (days). (n=24). Fig S3. Relationship between number of infants who had papules and the cure period (days). (n=53). Fig S4. Relationship between number of infants who had dryness and the cure period (days). (n=21). Fig S5. Relationship between number of infants who had exudate and the cure period (days). (n=10).
Caenidae (Insecta: Ephemeroptera) of Iran, with new records and re-description of the nymph of Caenis kopetdagi Kluge, 1985
Creators: name: Staniczek, Arnold H.
name: Malzacher, Peter
name: Jindřiška Bojková
name: Sroka, Pavel
name: Tomáš Soldán
name: Namin, Javid Imanpour
name: Nejat, Farshad
name: Ashgar Abdoli
name: Godunko, Roman J.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: The present contribution gives a faunistic overview on the distribution of Caenidae in Iran. Four species have so far been reported, of which Caenis macrura Stephens, 1835 by far is the most abundant and most widely spread species. Caenis kopetdagi Kluge, 1985 was previously only known from three localities in the Kopet Dag Mountain range, which stretches along the border between Turkmenistan and Iran. We report this species from three further localities at the western border of the Zagros Mountains in southwest Iran, thus considerably expanding its distribution. The nymph of Caenis kopetdagi is re-described, its validity is confirmed, and modern diagnostic characters are added. Its CO1 sequence is provided and compared with sequences of other species of Caenis Stephens, 1835 occurring in the Middle East. The habitat of C. kopetdagi as well as the distribution of Caenidae in Iran and of Caenis in the Middle East is also discussed.
The EMS and the international monetary system: towards greater stability
Creators: name: SARCINELLI, M.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: EMS, European financial integration, ECU, monetary stability
subject: E42, F36

description: The European Monetary System (EMS) is an attempt to achieve greater stability of monetary relationships between member states of the European Community. The author examines the theoretical foundations of such a scheme before discussing the experience of the EMS since its establishment in 1978. Particular attention is paid to the problem of harmonising the different monetary objectives of member states within the EMS and the role of the European Currency Unit in achieving harmonisation. This leads to an analysis of how greater stability may be achieved between the EMS and other currency areas and of how international monetary stability may be improved. JEL: E42, F36
description: PSL Quarterly Review, V. 39, N. 156 (1986)
The Holographic Map of an Evaporating Black Hole
Creators: name: Gyongyosi, Zsolt
name: Hollowood, Timothy J.
name: Kumar, S. Prem
name: Legramandi, Andrea
name: Talwar, Neil
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We construct a holographic map that takes the semi-classical state of an evaporating black hole and its Hawking radiation to a microscopic model that reflects the scrambling dynamics of the black hole. The microscopic model is given by a nested sequence of random unitaries, each one implementing a scrambling time step of the black hole evolution. Differently from other models, energy conservation and the thermal nature of the Hawking radiation are taken into account. We show that the QES formula follows for the entropy of multiple subsets of the radiation and black hole. We further show that a version of entanglement wedge reconstruction can be proved by computing suitable trace norms and quantum fidelities involving the action of a unitary on a subset of Hawking partners. If the Hawking partner is in an island, its unitary can be reconstructed by a unitary on the radiation. We also adopt a similar setup and analyse reconstruction of unitaries acting on an infalling system.
description: published version
GAUDI: a preparatory archive for the COROT mission
Creators: name: Solano, E.
name: Catala, C.
name: Garrido, R.
name: Poretti, E.
name: Janot-Pacheco, E.
name: Gutierrez, R.
name: Gonzalez, R.
name: Mantegazza, L.
name: Neiner, C.
name: Fremat, Y.
name: Charpinet, S.
name: Weiss, W.
name: Amado, P. J.
name: Rainer, M.
name: Tsymbal, V.
name: Lyashko, D.
name: Ballereau, D.
name: Bouret, J. C.
name: Hua, T.
name: Katz, D.
name: Lignieres, F.
name: Luftinger, T.
name: Mittermayer, P.
name: Nesvacil, N.
name: Soubiran, C.
name: Veer-Menneret, C. Van't
name: Goupil, M. J.
name: Costa, V.
name: Rolland, A.
name: Antonello, E.
name: Bossi, M.
name: Buzzoni, A.
name: Rodrigo, C.
name: Aerts, C.
name: Butler, C. J.
name: Guenther, E.
name: Hatzes, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The GAUDI database (Ground-based Asteroseismology Uniform Database Interface, http://sdc.laeff.esa.es/gaudi/) is a preparatory archive for the COROT (COnvection, ROtation and planetary Transits, http://www.astrsp-mrs.fr/projets/corot/) mission developed at LAEFF (Laboratory for Space Astrophysics and Theoretical Physics, http://www.laeff.esa.es). Its intention is to make the ground-based observations obtained in the preparation of the asteroseismology programme available in a simple and efficient way. It contains spectroscopic and photometric data together with inferred physical parameters for more than 1500 objects gathered since January 1998 in 6 years of observational campaigns. In this paper, the main functionalities and characteristics of the system are described. The observations have been collected at ESO-La Silla, Telescopio Nazionale Galileo, Observatoire de Haute-Provence, South African Astronomical Observatory, Tautenberg Observatory and Sierra Nevada Observatory.
description: 12 pages, 3 figures (quality degraded). Accepted for publication in The Astronomical Journal
Real wages and unemployment
Creators: name: WILSON, T.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: Unemployment, wages, labour, monetarist, neo-classical, Keynesian, efficiency
subject: E24, J01

description: When heavy unemployment persists year after year, it is natural to infer that labour is over-priced. This explanation may well prove to be a crucially important part of a larger explanation; but it is also clear that there are ambiguities to be removed and questions to be answered. The author analyses the monetarist and neo-classical views on these matters, followed by Keynesian opinions and the need to reconsider traditional models in the light of altered circumstances. Then, the factors influencing efficiency in the course of a cyclical expansion are discussed before some conclusions are drawn. JEL: E24, J01
description: PSL Quarterly Review, V. 39, N. 156 (1986)
Additional file 1 of Cerebral monitoring in a pig model of cardiac arrest with 48 h of intensive care
Creators: name: Vammen, Lauge
name: Johannsen, Cecilie Munch
name: Magnussen, Andreas
name: Povlsen, Amalie
name: Petersen, Søren Riis
name: Azizi, Arezo
name: Pedersen, Michael
name: Korshøj, Anders Rosendal
name: Ringgaard, Steffen
name: Løfgren, Bo
name: Andersen, Lars W.
name: Granfeldt, Asger
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Additional file 1: Table S1. Post-cardiac arrest intensive care protocol. Table S2 Haemoglobin, blood lactate and pH. Figure S1 Regions of interest displayed on T1 weighted MRI scan. Figure S2 Pressure and oxygen levels for both cardiac arrest groups and sham controls. Figure S3 Microdialysis data for both cardiac arrest groups and sham controls. Figure S4 MRI and MR spectroscopy for both cardiac arrest groups and sham controls. Figure S5 Neuronal injury markers for both cardiac arrest groups and sham controls. Figure S6 Scatter plot of blood/brain oxygenation and NSE/NfL levels for each animal. Figure S7 Scatter plots of lactate, pyruvate, and their ratio from animals in AMI-Int cardiac arrest group.
Radiative stabilization of warped space
Creators: name: Kobayashi, Tatsuo
name: Yoshioka, Koichi
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Higher-dimensional field theory has been applied to explore various issues in recent particle physics such as the gauge hierarchy problem. In order for such approaches to be viable, a crucial ingredient is to fix the sizes of extra dimensions at some finite values, which sizes are generically free parameters in the theory. In this paper, we present several schemes to determine the radius of extra dimension in warped five-dimensional theory. In every case, a non-vanishing Fayet-Iliopoulos term for abelian gauge factor plays a crucial role for the radius stabilization. It is radiatively generated in the presence of charged matter fields and the compactification is therefore spontaneous, not forced by selected operators. The low-energy supersymmetry is broken or unbroken, and the radius can be fixed to give a small or large scale hierarchy without any fine tuning of parameters. We also discuss a model of the radius stabilization correlated with Yukawa hierarchy and supersymmetry breaking.
description: 23 pages, 2 figures
இராமாயணத்தில் தசரதன் - கைகேயி உறவு.pdf
Creators: name: K, Sridhar
Publisher: name: figshare
Year: 2020
Subjects: subject: 200315 Indian Languages
subject: FOS: Languages and literature
subject: 200520 Indian Literature
subject: 200299 Cultural Studies not elsewhere classified
subject: FOS: Other humanities

description: இக்கட்டுரை இராமாயணத்தில் தசரதன் - கைகேயி உறவு பற்றி விவரிக்கின்றது.
On the determination of Lagrange Multipliers for a weighted LASSO problem using geometric and convex analysis techniques
Creators: name: Giacchi, Gianluca
name: Milani, Bastien
name: Franchieschiello, Benedetta
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 15A29, 47N10, 47A52, 49K99, 49N45, 65F20, 65F22, 92C55

description: Compressed Sensing (CS) encompasses a broad array of theoretical and applied techniques for recovering signals, given partial knowledge of their coefficients. Its applications span various fields, including mathematics, physics, engineering, and several medical sciences. Motivated by our interest in the mathematics behind Magnetic Resonance Imaging (MRI) and CS, we employ convex analysis techniques to analytically determine equivalents of Lagrange multipliers for optimization problems with inequality constraints, specifically a weighted LASSO with voxel-wise weighting. We investigate this problem under assumptions on the fidelity term $\Vert{Ax-b}\Vert_2^2$, either concerning the sign of its gradient or orthogonality-like conditions of its matrix. To be more precise, we either require the sign of each coordinate of $2(Ax-b)^TA$ to be fixed within a rectangular neighborhood of the origin, with the side lengths of the rectangle dependent on the constraints, or we assume $A^TA$ to be diagonal. The objective of this work is to explore the relationship between Lagrange multipliers and the constraints of a weighted variant of LASSO, specifically in the mentioned cases where this relationship can be computed explicitly. As they scale the regularization terms of the weighted LASSO, Lagrange multipliers serve as tuning parameters for the weighted LASSO, prompting the question of their potential effective use as tuning parameters in applications like MR image reconstruction and denoising. This work represents an initial step in this direction.
Ghost imaging schemes: fast and broadband
Creators: name: Bache, M.
name: Brambilla, E.
name: Gatti, A.
name: Lugiato, L. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In ghost imaging schemes information about an object is extracted by measuring the correlation between a beam that passed the object and a reference beam. We present a spatial averaging technique that substantially improves the imaging bandwidth of such schemes, which implies that information about high-frequency Fourier components can be observed in the reconstructed diffraction pattern. In the many-photon regime the averaging can be done in parallel and we show that this leads to a much faster convergence of the correlations. We also consider the reconstruction of the object image, and discuss the differences between a pixel-like detector and a bucket detector in the object arm. Finally, it is shown how to non-locally make spatial filtering of a reconstructed image. The results are presented using entangled beams created by parametric down-conversion, but they are general and can be extended also to the important case of using classically correlated thermal-like beams.
description: 15 pages, published in Optics Express. Figures in online version miss some information in axes labels, therefore we have updated the arXiv version to the published version and with the correct axes labels. The movies are available at the Optics Express home page
Membership, binarity and accretion among very low-mass stars and brown dwarfs of the Sigma Orionis cluster
Creators: name: Kenyon, M. J.
name: Jeffries, R. D.
name: Naylor, Tim
name: Oliveira, J. M.
name: Maxted, P. F. L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Intermediate resolution (R=7000) spectroscopy is presented for 76 photometrically selected very low mass (0.04
description: Accepted for publication in MNRAS
A Model for Fast Blue Optical Transient AT2018Cow: Circumstellar Interaction of a Pulsational Pair-instability Supernova
Creators: name: Leung, Shing-Chi
name: Blinnikov, Sergei
name: Nomoto, Ken'ichi
name: Baklanov, Petr
name: Sorokina, Elena
name: Tolstov, Alexey
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Fast Blue Optical Transient (FBOT) ATLAS18qqn (AT2018cow) has a light curve as bright as superluminous supernovae but rises and falls much faster. We model this light curve by circumstellar interaction of a pulsational pair-instability (PPI) supernova (SN) model based on our PPISN models studied in previous work. We focus on the 42 $M_\odot$ He star (core of a 80 $M_{\odot}$ star) which has circumstellar matter of mass 0.50 $M_\odot$. With the parameterized mass cut and the kinetic energy of explosion $E$, we perform hydrodynamical calculations of nucleosynthesis and optical light curves of PPISN models. The optical light curve of the first $\sim$ 20 days of AT2018cow is well-reproduced by the shock heating of circumstellar matter for the $42 ~M_{\odot}$ He star with $E = 5 \times 10^{51}$ erg. After day 20, the light curve is reproduced by the radioactive decay of 0.6 $M_\odot$ $^{56}$Co, which is a decay product of $^{56}$Ni in the explosion. We also examine how the light curve shape depends on the various model parameters, such as CSM structure and composition. We also discuss (1) other possible energy sources and their constraints, (2) origin of observed high-energy radiation, and (3) how our result depends on the radiative transfer codes. Based on our successful model for AT2018cow and the model for SLSN with the CSM mass as large as $20 ~M_\odot)$, we propose the working hypothesis that PPISN produces SLSNe if CSM is massive enough and FBOTs if CSM is less than $\sim 1 ~M_\odot$.
description: 17 pages, 31 figures, published in Astrophysical Journal, submitted at 7 February 2020, accepted at 18 September 2020, published at 3 November 2020
Young Super Star Clusters in the Starburst of M82: The Catalogue
Creators: name: Melo, V. P.
name: Muñoz-Tuñón, C.
name: Maíz-Apellániz, J.
name: Tenorio-Tagle, G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent results from Hubble Space Telescope (HST) have resolved starbursts as collections of compact young stellar clusters. Here we present a photometric catalogue of the young stellar clusters in the nuclear starburst of M82, observed with the HST WFPC2 in Halpha (F656N) and in four optical broad-band filters. We identify 197 young super stellar clusters. The compactness and high density of the sources led us to develop specific techniques to measure their sizes. Strong extinction lanes divide the starburst into five different zones and we provide a catalogue of young super star clusters for each of these. In the catalogue we include relative coordinates, radii, fluxes, luminosities, masses, equivalent widths, extinctions, and other parameters. Extinction values have been derived from the broad-band images. The radii range between 3 and 9 pc, with a mean value of 5.7 +/- 1.4pc, and a stellar mass between 10e4 and 10e6 Mo. The inferred masses and mean separation, comparable to the size of super star clusters, together with their high volume density, provides strong evidence for the key ingredients postulated by Tenorio et al. (2003) as required for the development of a supergalactic wind.
description: 45 pages, 5 figures, 12 tables. Accepted for publication in ApJ. Added Erratum
Decline in the share of the agricultural product: measurements and explanations
Creators: name: ERCOLANI, P.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: Agriculture, economic development, decline of agricultural, income growth
subject: N50, O13, Q10

description: The reduction of agriculture’s share of product constitutes the most important change in the structure of supply associated with income growth. This is so constant that it can be considered one of the “laws” of economics, however, in order to understand such a complex phenomenon in terms of economic development, the search for uniformity should represent only the beginning, not the conclusion of the analysis. This work focuses on the pattern of agriculture’s share, both among countries and over time, and considers the factors which determine the relative decline of the agricultural product. The author singles out the factors other than income that have contributed to the determination of systemic differences among countries in agriculture’s share in product. Then, a quantitive assessment of the factors which have caused the decline is presented. JEL: N50, O13, Q10
description: PSL Quarterly Review, V. 39, N. 156 (1986)
Tree-level Scattering Amplitude in de Sitter Space
Creators: name: Rouhani, S.
name: Takook, M. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In previous papers [1,2], it was proved that a covariant quantization of the minimally coupled scalar field in de Sitter space is achieved through addition of the negative norm states. This causal approach which eliminates the infrared divergence, was generalized further to the calculation of the graviton propagator in de Sitter space [3] and one-loop effective action for scalar field in a general curved space-time [4]. This method gives a natural renormalization of the above problems. Pursuing this approach, in the present paper the tree-level scattering amplitudes of the scalar field, with one graviton exchange, has been calculated in de Sitter space. It is shown that the infrared divergence disappears and the theory automatically reaches a renormalized solution of the problem.
description: 6 pages
Level Statistics of XXZ Spin Chains with Discrete Symmetries: Analysis through Finite-size Effects
Creators: name: Kudo, Kazue
name: Deguchi, Tetsuo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Level statistics is discussed for XXZ spin chains with discrete symmetries for some values of the next-nearest-neighbor (NNN) coupling parameter. We show how the level statistics of the finite-size systems depends on the NNN coupling and the XXZ anisotropy, which should reflect competition among quantum chaos, integrability and finite-size effects. Here discrete symmetries play a central role in our analysis. Evaluating the level-spacing distribution, the spectral rigidity and the number variance, we confirm the correspondence between non-integrability and Wigner behavior in the spectrum. We also show that non-Wigner behavior appears due to mixed symmetries and finite-size effects in some nonintegrable cases.
description: 19 pages, 6 figures
Additional file 1 of Perspectives on mental health services for medical students at a Ugandan medical school
Creators: name: Kihumuro, Raymond Bernard
name: Kaggwa, Mark Mohan
name: Nakandi, Rachael Mukisa
name: Kintu, Timothy Mwanje
name: Muwanga, David Richard
name: Muganzi, David Jolly
name: Atwau, Pius
name: Ayesiga, Innocent
name: Acai, Anita
name: Najjuka, Sarah Maria
name: Najjuma, Josephine Nambi
name: Frazier-Koussai, Susan
name: Ashaba, Scholastic
name: Harms, Sheila
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
Aerial roots
Creators: name: STREETEN, P.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: Paul Streeten, biography, recollections
subject: B31

description: The paper is a contribution to a series of recollections and reflections on the professional experiences of distinguished economists which the Banca Nazionale del Lavoro Quarterly Review started in 1979. In it Paul Streeten describes the many crucial accidents that have impacted the trajectory of his life and career. JEL: B31
description: PSL Quarterly Review, V. 39, N. 157 (1986)
A single currency: utopia today? Reality tomorrow?
Creators: name: DE STRYCKER, C.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: Fluctuating exchange rates, single international currency unit, financial policies, monetary adjustments
subject: F31, E42

description: The collapse of the Bretton Woods international monetary system in 1971 inaugurated an era of highly fluctuating exchange rates. Part of the reason for this volatility has been the almost complete internationalisation of capital markets, with national currencies remaining subject to political influences and the vagaries of changing trade patterns. One possible solution to these problems would be the adoption of a single international currency unit. Although this would not remove the problem inherent in balance of payments disequilibrium, it would nevertheless impose greater market discipline on financial policies by removing the option of monetary adjustments. JEL: F31, E42
description: PSL Quarterly Review, V. 39, N. 157 (1986)
Base de datos de artículos de RSL sobre la Aplicación del ML en el Rendimiento Deportivo
Creators: name: Abanto Acuña, Raul
name: Botton Castillo, Baruck
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 461104
subject: Neural networks
classificationCode: 461103
subject: Deep learning
classificationCode: 461106
subject: Semi- and unsupervised learning
classificationCode: 461105
subject: Reinforcement learning
classificationCode: 461102
subject: Context learning

description: Base de datos en Excel con los artículos de la Aplicación del Machine Learning en el Rendimiento Deportivo.
A Study of Dynamic Finite Size Scaling Behavior of the Scaling Functions-Calculation of Dynamic Critical Index of Wolff Algorithm
Creators: name: Gündüç, Semra
name: Dilaver, Mehmet
name: Aydın, Meral
name: Gündüç, Yiğit
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work we have studied the dynamic scaling behavior of two scaling functions and we have shown that scaling functions obey the dynamic finite size scaling rules. Dynamic finite size scaling of scaling functions opens possibilities for a wide range of applications. As an application we have calculated the dynamic critical exponent ($z$) of Wolff's cluster algorithm for 2-, 3- and 4-dimensional Ising models. Configurations with vanishing initial magnetization are chosen in order to avoid complications due to initial magnetization. The observed dynamic finite size scaling behavior during early stages of the Monte Carlo simulation yields $z$ for Wolff's cluster algorithm for 2-, 3- and 4-dimensional Ising models with vanishing values which are consistent with the values obtained from the autocorrelations. Especially, the vanishing dynamic critical exponent we obtained for $d=3$ implies that the Wolff algorithm is more efficient in eliminating critical slowing down in Monte Carlo simulations than previously reported.
description: Latex, 24 pages, 13 eps figures. Accepted for publication in Computer Physics Communication
Central bank intervention: to sterilise or not?
Creators: name: INGRAM, J.C.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: Foreign exchange markets, balance of payments disequilibrium, central bank intervention
subject: E58, F32

description: The 'Group of Five' recently agreed to co-ordinate their policies for intervention on the foreign exchange markets in order to influence market rates. Several commentators have argued that such intervention does not remove the basic problem, which is balance of payments disequilibrium. The author argues that this view may be wrong when capital flows are assumed to be autonomous. Intervention under these circumstances may reduce or eliminate capital flows from countries in balance of payments surplus, and so bring about an appreciation in the currency and a reduction in the balance of payments surplus. JEL: E58, F32
description: PSL Quarterly Review, V. 39, N. 157 (1986)
Credit aggregates: some suggestions
Creators: name: MCLEOD, A.N.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: Monetary policy, credit aggregates, currency base
subject: E52

description: There is continuing controversy surrounding the efficacy of operating monetary policy on the basis of targeting monetary aggregates. The disappointing experience of many countries in hitting these targets has led some commentators to suggest that such an approach is wrong; other commentators assert that the objective is right, but that the methods of achieving it are wrong. The author is in the latter category, and he elaborates the view that control of the currency base in the economy is both possible and a more efficient way of controlling credit aggregates. JEL: E52
description: PSL Quarterly Review, V. 39, N. 157 (1986)
Leveraging the Mathematics of Shape for Solar Magnetic Eruption Prediction
Creators: name: Deshmukh, V.
name: Berger, T. E.
name: Bradley, E.
name: Meiss, J. D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Current operational forecasts of solar eruptions are made by human experts using a combination of qualitative shape-based classification systems and historical data about flaring frequencies. In the past decade, there has been a great deal of interest in crafting machine-learning (ML) flare-prediction methods to extract underlying patterns from a training set---e.g., a set of solar magnetogram images, each characterized by features derived from the magnetic field and labeled as to whether it was an eruption precursor. These patterns, captured by various methods (neural nets, support vector machines, etc.), can then be used to classify new images. A major challenge with any ML method is the \textit{featurization} of the data: pre-processing the raw images to extract higher-level properties, such as characteristics of the magnetic field, that can streamline the training and use of these methods. It is key to choose features that are informative, from the standpoint of the task at hand. To date, the majority of ML-based solar eruption methods have used physics-based magnetic and electric field features such as the total unsigned magnetic flux, the gradients of the fields, the vertical current density, etc. In this paper, we extend the relevant feature set to include characteristics of the magnetic field that are based purely on the geometry and topology of 2D magnetogram images and show that this improves the prediction accuracy of a neural-net based flare-prediction method.
Distorted macroeconomics of central planning
Creators: name: WINIECKI, J.
Publisher: name: PSL Quarterly Review
Year: 2013
Subjects: subject: Central planning, Soviet-type economies, institutional differences, distortions
subject: P21

description: There are two main pitfalls for those who analyse Soviet-type economies: the difficulty of explaining macroeconomic relationships in terms of either neoclassical or Keynesian received theory and the distorted official data. It is systemic features that make the characteristic macro effects mean something different under central planning from what is understood by Western economists and generate quantity and price distortions that cause statistics in Soviet-type economies to differ from those in market economies. This paper sets these differences and distortions into an explanatory framework and, while received theory is applied, the impact of institutional differences is also taken into account. Empirical support for the framework is given with attention drawn to distortions in prices and especially quantities, since the latter are less evident. JEL: P21
description: PSL Quarterly Review, V. 39, N. 157 (1986)
Supplementary Document 1. Analytical Techniques. The Atud Gabbro–Diorite Complex: Glimpse of the Cryogenian Mixing, Assimilation, Storage, and Homogenization Zone beneath the Eastern Desert of Egypt
Creators: name: Stern, Robert J.
name: Ali, Kamal
name: Asimow, Paul D.
name: Mokhles K. Azer
name: Leybourne, Matthew I.
name: Mubarak, Heba S.
name: Minghua Ren
name: Romer, Rolf L.
name: Whitehouse, Martin J.
Publisher: name: Geological Society of London
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary Document 1: Analytical Techniques.