cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Data assimilation in a nonlinear time-delayed dynamical system
Creators: name: Traverso, Tullio
name: Magri, Luca
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Machine Learning (cs.LG)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: When the heat released by a flame is sufficiently in phase with the acoustic pressure, a self-excited thermoacoustic oscillation can arise. These nonlinear oscillations are one of the biggest challenges faced in the design of safe and reliable gas turbines and rocket motors. In the worst-case scenario, uncontrolled thermoacoustic oscillations can shake an engine apart. Reduced-order thermoacoustic models, which are nonlinear and time-delayed, can only qualitatively predict thermoacoustic oscillations. To make reduced-order models quantitatively predictive, we develop a data assimilation framework for state estimation. We numerically estimate the most likely nonlinear state of a Galerkin-discretized time delayed model of a horizontal Rijke tube, which is a prototypical combustor. Data assimilation is an optimal blending of observations with previous state estimates (background) to produce optimal initial conditions. A cost functional is defined to measure the statistical distance between the model output and the measurements from experiments; and the distance between the initial conditions and the background knowledge. Its minimum corresponds to the optimal state, which is computed by Lagrangian optimization with the aid of adjoint equations. We study the influence of the number of Galerkin modes, which are the natural acoustic modes of the duct, with which the model is discretized. We show that decomposing the measured pressure signal in a finite number of modes is an effective way to enhance state estimation, especially when nonlinear modal interactions occur during the assimilation window. This work represents the first application of data assimilation to nonlinear thermoacoustics, which opens up new possibilities for real-time calibration of reduced-order models with experimental measurements.
description: 13 pages, 4 figures
Dead time effects in laser Doppler anemometry measurements
Creators: name: Velte, Clara M.
name: Buchhave, Preben
name: George, William K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We present velocity power spectra computed by the so-called direct method from burst type laser Doppler anemometer (LDA) data, both measured in a turbulent round jet and generated in a computer. Using today's powerful computers we have been able to study more properties of the computed spectra than was previously possible, and we noted some unexpected features of the spectra that we now attribute to the unavoidable influence of a finite measurement volume (MV). The most prominent effect, which initially triggered these studies, was the appearance of damped oscillations in the higher frequency range, starting around the cut-off frequency due to the size of the MV. Using computer generated data mimicking the LDA data, these effects have previously been shown to appear due to the effect of dead time, i.e., the finite time during which the system is not able to acquire new measurements. These dead times can be traced back to the fact that the burst-mode LDA cannot measure more than one signal burst at a time. Since the dead time is approximately equal to the residence time for a particle traversing a measurement volume, we are dealing with widely varying dead times, which, however, are assumed to be measured for each data point. In addition, the detector and processor used in the current study introduce a certain amount of fixed processing and data transfer times, which further contribute to the distortion of the computed spectrum. However, we show excellent agreement between a measured spectrum and our modeled LDA data thereby confirming the validity of our model for the LDA burst processor.
[Estimada señora: En contestación a su atta. 20 nvbre. pado.]
Creators: name: Editorial Seix Barral, S.A.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: ‘’Sonámbulo del sol’’
Droits d’auteur

description: Destinataire : Tejera, Nivaria
description: Liquidation de droits d’auteur de l’ouvrage ‘’Sonámbulo del sol’’ au 31 décembre 1982.
description: Liquidación de derechos de autor de la obra “Sonámbulo del sol” el 31 de diciembre de 1982.
description: Note : Papier à en-tête : Editorial Seix Barral, s.a. Barcelona. Le formulaire de liquidation de droits d’auteur est agrafé à la lettre.
description: Source: NT-AB-1983-12-01
description: Source: Localisation du document : Centre de Recherches Latino-Américaines (CRLA–Archivos, ITEM UMR8132). MSHS - Bât. A5, 1er étage 5 rue Théodore Lefebvre - TSA21103. 86073 Poitiers cedex 9.
Gravitons from a loop representation of linearised gravity
Creators: name: Varadarajan, Madhavan
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Loop quantum gravity is based on a classical formulation of 3+1 gravity in terms of a real SU(2) connection. Linearization of this classical formulation about a flat background yields a description of linearised gravity in terms of a {\em real} $U(1)\times U(1)\times U(1)$ connection. A `loop' representation, in which holonomies of this connection are unitary operators, can be constructed. These holonomies are not well defined operators in the standard graviton Fock representation. We generalise our recent work on photons and U(1) holonomies to show that Fock space gravitons are associated with distributional states in the $U(1)\times U(1)\times U(1)$ loop representation. Our results may illuminate certain aspects of the much deeper (and as yet unkown,) relation between gravitons and states in nonperturbative loop quantum gravity. This work leans heavily on earlier seminal work by Ashtekar, Rovelli and Smolin (ARS) on the loop representation of linearised gravity using {\em complex} connections. In the last part of this work, we show that the loop representation based on the {\em real} $U(1)\times U(1)\times U(1)$ connection also provides a useful kinematic arena in which it is possible to express the ARS complex connection- based results in the mathematically precise language currently used in the field.
description: 23 pages, no figures
Additional file 1 of A robust and transformation-free joint model with matching and regularization for metagenomic trajectory and disease onset
Creators: name: Li, Qian
name: Vehik, Kendra
name: Li, Cai
name: Triplett, Eric
name: Roesch, Luiz
name: Hu, Yi-Juan
name: Krischer, Jeffrey
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer

description: Additional file 1: Appendix. Gauss-Hermite quadrature approximation for marginal likelihood.
[Recibo sus e-mails referentes al trabajo que preparan sobre CGI]
Creators: name: Nivaria, Tejera
name: Tejera, Nivaria
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Travaux académiques
Cabrera Infante, Guillermo

description: Destinataire : Mirabal, Elizabeth / Velazco, Carlos
description: Échange de 2 courriels entre Nivaria Tejera et Elizabeth Mirabal et Carlos Velazco, tous deux datés du 2009-03-26.
NT à EM-CV : L’autrice décrit ses (mauvaises) relations avec Guillermo Cabrera Infante. Elle évoque son roman ‘’Sonámbulo del sol’’, César Vallejo et Luis Marré.
EM-CV à NT: Ils la remercient pour son message et l’informe que le portrait qu’elle fait de Cabrera infante correspond à celui décrit par d’autres personnes fait dans le cadre de leur étude. Ses félicitations seront transmises à Luis Marré.
description: Intercambio de 2 correos electrónicos entre Nivaria Tejera y Elizabeth Mirabal y Carlos Velazco, ambos con fecha 2009-03-26.
NT a EM-CV: La autora describe sus (malas) relaciones con Guillermo Cabrera Infante. Ella menciona su novela ''Sonámbulo del sol'', César Vallejo y Luis Marré.
EM-CV a NT: Le agradecen su mensaje y le informan que el retrato que hace de Cabrera infante coincide con el descrito por otras personas hecho en el marco de su estudio. Sus felicitaciones serán transmitidas a Luis Marré.
description: Note : Les courriels sont imprimés sur le feuillet dans l’ordre inverse de leur date de rédaction. Absence de l’en-tête du courriel de Mirabal et Velazco. Courriel de Nivaria Tejera, Sujet : Acclaraciones, adressé à Mirabal et Velazco.
description: Source: NT-AB-2009-03-26
description: Source: Localisation du document : Centre de Recherches Latino-Américaines (CRLA–Archivos, ITEM UMR8132). MSHS - Bât. A5, 1er étage 5 rue Théodore Lefebvre - TSA21103. 86073 Poitiers cedex 9.
description: Relation: NT-AB-2009-03-24
Extraction of the strong coupling constant and strange quark mass from semileptonic tau decays
Creators: name: Pivovarov, A. A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this lecture I present a pedagogical introduction to the low-energy phenomenology of light flavors. The renormalization scheme freedom in defining QCD parameters is discussed. It is shown in some details how one can extract an accurate numerical value for the strong coupling constant from the tau-lepton decay rate into hadrons. As a related topic I discuss some peculiarities of definition of the quark mass in theories with confinement and describe the strange quark mass determination from data on tau-lepton decays employing contour resummation which is a modern technique of the precision analysis in perturbative QCD.
description: Lecture given at International School ``Heavy Quark Physics'' Dubna, May 28 - June 5, 2002, Russia, 11 pages, Latex
Applicability of the Debye-Waller damping factor for the determination of the line-edge roughness of lamellar gratings
Creators: name: Herrero, Analía Fernández
name: Pflüger, Mika
name: Probst, Jürgen
name: Scholze, Frank
name: Soltwisch, Victor
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Periodic nanostructures are fundamental elements in optical instrumentation as well as basis structures in integrated electronic circuits. Decreasing sizes and increasing complexity of nanostructures have made roughness a limiting parameter to the performance. Grazing-incidence small-angle X-ray scattering is a characterization method that is sensitive to three-dimensional structures and their imperfections. To quantify line-edge roughness, a Debye-Waller factor (DWF), which is derived for binary gratings, is usually used. In this work, we systematically analyze the effect of roughness on the diffracted intensities. Two different limits to applying the DWF are found depending on whether or not the roughness is normally distributed.
title: The venereal poison: a historic and genetic analysis of categories of sexually transmitted diseases, 1718-1850
Creators: name: Osis, Francis
Publisher: name: University of Glasgow
Year: 2021
Subjects: subject: anatomy, history of medicine, syphilis, sexually transmitted diseases, museums, medical museums, ancient DNA, genomics, material culture.

description: During the first half of the eighteenth century, the monolithic term ‘venereal disease’ or lues venerea covered all signs and symptoms of diseases transmitted through sex. In 1766, Francis Balfour – a medical student at the University of Edinburgh – suggested that lues venerea could actually be divided into two separate diseases, each caused by a unique contagion: syphilis and gonorrhoea. This opened a debate that continued for decades, between the monists, who believed that syphilis and gonorrhoea were merely symptoms of the same disease, and the dualists, who believed that the two should be separated. In this thesis, I investigate how the dualist theory was introduced, debated and finally accepted in Britain, particularly London and Edinburgh. Thomas Kuhn’s paradigm shift framework is loosely used as a lens to investigate this process. In the decades prior to 1766, changes in how doctors approached venereal disease lay the necessary foundation for the dualist doctrine. This period also saw a set of crises, both scientific and social; the persistent inability to successfully treat venereal disease, the increase in demand for treatment as patient numbers rose, and an increased perception as syphilis of a moral issue via the Reformation Societies. Immediately after the introduction of the dualist doctrine, those who accepted the new doctrine were all found within the social circle of Balfour. Doctors outside this network did not begin to accept the new theory until the dualists began to produce experimental evidence in their favour, showing the shift in priorities between early and late adopters of a theory from a matter of faith and social trust, to one of hard evidence. The ability to separate gonorrhoea and syphilis, however, was confounded by the inability to define venereal disease. This difficulty is reflected in how lues venerea was represented with anatomical specimens. A comparison of six medical museums in London and Edinburgh shows that specimens emphasised the lesions of disease. This encouraged a flexible approach which prioritised signs and symptoms, rather than through disease categorisation. The difficulty in diagnosing venereal disease is further highlighted by genetic analysis of one of these anatomical specimens, which finds a possible underlying case of nasal infection and food poisoning rather than syphilis. This work demonstrates the importance of shared language and agreed definitions when introducing new scientific theories.
[Ya leyó mi mensaje de ayer, Madeline?]
Creators: name: Nivaria, Tejera
name: Tejera, Nivaria
name: Cámara, Madeline
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Édition
‘’Huir de la espiral’’

description: Destinataire : Cámara, Madeline / Tejera, Nivaria
description: Échange de 2 courriels entre Nivaria Tejera et Madeline Cámara.
NT à MC, du 2009-03-11 : L’autrice évoque la publication de ‘’Huir de la espiral’’ par Pío E. Serrano, avec une préface de Rafael Rojas, et argumente sur le sujet.
MC à NT, du 2009-03-12 : L’autrice évoque leur amitié et son état d’esprit. Elle l’informe qu’elle termine un texte pour María Hernández-Ojera.
description: Intercambio de 2 correos electrónicos entre Nivaria Tejera y Madeline Cámara.
NT a MC, del 2009-03-11: La autora del correo se refiere a la publicación de ''Huir de la espiral'', de Pío E. Serrano, con un prefacio de Rafael Rojas, y argumenta sobre el tema.
MC a NT, del 2009-03-12: La autora menciona su amistad y estado de ánimo. Le informa que está terminando un texto para María Hernández-Ojera.
description: Note : Les courriels sont imprimés sur les feuillets dans l’ordre inverse de leur date de rédaction. Courriel de Nivaria Tejera, Objet : Suite, adressé à Madeline Cámara, Objet : Re : Suite.
description: Source: NT-AB-2009-03-11
description: Source: Localisation du document : Centre de Recherches Latino-Américaines (CRLA–Archivos, ITEM UMR8132). MSHS - Bât. A5, 1er étage 5 rue Théodore Lefebvre - TSA21103. 86073 Poitiers cedex 9.
The effect of dead time on randomly sampled power spectral estimates
Creators: name: Buchhave, Preben
name: Velte, Clara M.
name: George, William K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Signal Processing (eess.SP)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We investigate power spectra of a randomly sampled stationary stochastic signal, e.g. a spatial component of a turbulent velocity. We extend the methods of previous authors that basically assumed point or delta function sampling by including features characteristic of real measurement systems. We consider both the effect on the measured spectrum of a finite sampling time, i.e., a finite time during which the signal is acquired, and a finite dead time, that is a time in which the signal processor is busy evaluating a data point and therefore unable to measure a subsequent data point arriving within the dead time delay.
Supplementary material for Mandibular morphology, task specialization, and bite mechanics in Pheidole ants (Hymenoptera: Formicidae)
Creators: name: Klunk, C. L.
name: M. A. Argenta
name: A. Casadei-Ferreira
name: Economo, E. P.
name: Pie, M. R.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 110601 Biomechanics
subject: FOS: Health sciences

description: Fig. S1. Results from three apical strike simulations to show the methodology applied to rescale the stress range of each FEA graph, to improve the visualization of the stress spread and allow the comparison between different simulations.
Transient electric current through an Aharonov-Bohm ring after switching of a Two-Level-System
Creators: name: Tatara, Gen
Publisher: name: arXiv
Year: 2001
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Response of the electronic current through an Aharonov-Bohm ring after a two-level-system is switched on is calculated perturbatively by use of non-equilibrium Green function. In the ballistic case the amplitude of the Aharonov-Bohm oscillation is shown to decay to a new equilibrium value due to scattering into other electronic states. Relaxation of Altshuler-Aronov-Spivak oscillation in diffusive case due to dephasing effect is also calculated. The time scale of the relaxation is determined by characteristic relaxation times of the system and the splitting of two-level-system. Oscillation phases are not affected. Future experimental studies of current response may give us direct information on characteristic times of mesoscopic systems.
title: 03_1009
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
[Estimada señora Ma. Rosario Añaños : le adjunto el documento que he preparado]
Creators: name: Antón, González
name: Añaños, María Rosario
name: González, Antón (Hanton)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Art
Peinture
Exposition Hanton

description: Destinataire : González, Antón (Hanton) / Tejera, Nivaria / Añaños, María Rosario
description: Échange de 3 courriels entre Antón González (et Nivaria Tejera) et María Rosario Añaños.
AG à MRA, daté du 2010-06-10 : L’auteur annonce en pièce jointe le document à remettre au transporteur qui va acheminer ses tableaux de Paris à Saragosse. Il la remercie pour la reconnaissance de son œuvre par le Musée Ibercaja Camón Aznar, et remercie Chus Tudelilla pour sa collaboration.
MRA à AG et NT, daté du 2010-06-11 : L’autrice l’informe que le document est à remettre au transporteur à son arrivée à leur domicile à Paris.
AG à MRA, daté du 2010-06-25 : L’auteur lui transmet des informations reçues par le transporteur concernant l’acheminement de ses tableaux.
description: Intercambio de 3 correos electrónicos entre Antón González (y Nivaria Tejera) y María Rosario Añaños.
AG a MRA, fecha 2010-06-10: El autor anuncia en anexo el documento que se entregará al transportista que transportará sus cuadros de París a Zaragoza. Agradece el reconocimiento de su obra por parte del Museo Ibercaja Camón Aznar, y agradece a Chus Tudelilla su colaboración.
MRA a AG y NT, fecha 2010-06-11: La autora informa que el documento debe entregarse al transportista cuando llegue a su domicilio en París.
AG a MRA, fecha 2010-06-25: El autor le envía la información recibida por el transportista sobre el encaminamiento de sus cuadros.
description: Note : Les courriels sont imprimés sur le feuillet dans l’ordre inverse de leur date de rédaction. Courriel de Antón González adressé à María Rosario Añaños. Conversation : Envio documento cuadros.
description: Source: NT-AB-2010-06-10b
description: Source: Localisation du document : Centre de Recherches Latino-Américaines (CRLA–Archivos, ITEM UMR8132). MSHS - Bât. A5, 1er étage 5 rue Théodore Lefebvre - TSA21103. 86073 Poitiers cedex 9.
Current-feedback-stabilized laser system for quantum simulation experiments using Yb clock transition at 578 nm
Creators: name: Takata, Yoshihiro
name: Nakajima, Shuta
name: Kobayashi, Jun
name: Ono, Koki
name: Amano, Yoshiki
name: Takahashi, Yoshiro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We developed a laser system for the spectroscopy of the clock transition in ytterbium (Yb) atoms at 578 nm based on an interference-filter stabilized external-cavity diode laser (IFDL) emitting at 1156 nm. Owing to the improved frequency-to-current response of the laser-diode chip and the less sensitivity of the IFDL to mechanical perturbations, we succeeded in stabilizing the frequency to a high-finesse ultra-low-expansion glass cavity with a simple current feedback system. Using this laser system, we performed high-resolution clock spectroscopy of Yb and found that the linewidth of the stabilized laser was less than 320 Hz.
description: 5 pages, 7 figures
[Mi querida Nivaria : Perdona mi largo silencio, que ha tenido dos causas]
Creators: name: Emilio Adolfo, Westphalen
name: Westphalen, Emilio Adolfo
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Littérature
Revue Amaru

description: Destinataire : Tejera, Nivaria
description: L’auteur évoque : des problèmes de santé, le numéros 12 et 14 de la revue (Amaru), des problèmes de gestion concernant la revue, un poste d’attaché culturel à l’Ambassade de Rome, des expositions de son épouse Judith Westphalen à Ciudad de Mexico et à Lima et son travail à la Commission pour la réforme de l’éducation, leurs filles Inés et Silvia, Rauda Jamís et Antón González, et la réception de son ouvrage ‘’Sonámbulo del sol’’.
description: El autor menciona: problemas de salud, los números 12 y 14 de la revista (Amaru), problemas de gestión de la revista, un puesto de agregado cultural en la Embajada de Roma, exposiciones de su esposa Judith Westphalen en Ciudad de México y Lima y su trabajo en la Comisión para la Reforma de la Educación, sus hijas Inés y Silvia, Rauda Jamís y Antón González, y la recepción de su obra ''Sonámbulo del sol''.
description: Note : Papier à en-tête : amaru – revista de artes y ciencias. Universidad Nacional de Ingeniería – Lima, Perú.
description: Source: NT-AB-1970-02-02
description: Source: Localisation du document : Centre de Recherches Latino-Américaines (CRLA–Archivos, ITEM UMR8132). MSHS - Bât. A5, 1er étage 5 rue Théodore Lefebvre - TSA21103. 86073 Poitiers cedex 9.
Audio-noise Power Spectral Density Estimation Using Long Short-term Memory
Creators: name: Li, Xiaofei
name: Leglaive, Simon
name: Girin, Laurent
name: Horaud, Radu
Publisher: name: arXiv
Year: 2019
Subjects: subject: Signal Processing (eess.SP)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: We propose a method using a long short-term memory (LSTM) network to estimate the noise power spectral density (PSD) of single-channel audio signals represented in the short time Fourier transform (STFT) domain. An LSTM network common to all frequency bands is trained, which processes each frequency band individually by mapping the noisy STFT magnitude sequence to its corresponding noise PSD sequence. Unlike deep-learning-based speech enhancement methods that learn the full-band spectral structure of speech segments, the proposed method exploits the sub-band STFT magnitude evolution of noise with a long time dependency, in the spirit of the unsupervised noise estimators described in the literature. Speaker- and speech-independent experiments with different types of noise show that the proposed method outperforms the unsupervised estimators, and generalizes well to noise types that are not present in the training set.
description: Submitted to IEEE Signal Processing Letters
Three Dimensional Gravity in the Presence of Scalar Fields
Creators: name: Birkandan, Tolga
name: Hortacsu, M.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study a scalar field in curved space in three dimensions. We obtain a static perturbative solution and show that this solution satisfies the exact equations in the asymptotic region at infinity. The new solution gives rise to a singularity in the curvature scalar at the origin. Our solution, however, necessitates the excising the region near the origin, thus this naked singularity is avoided.
description: 10 pages, 5 figures. Replaced by a revised version
Particle Fluctuations in Mesoscopic Bose Systems
Creators: name: Yukalov, V. I.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Particle fluctuations in mesoscopic Bose systems of arbitrary spatial dimensionality are considered. Both ideal Bose gases and interacting Bose systems are studied in the regions above the Bose-Einstein condensation temperature $T_c$ as well as below this temperature. The strength of particle fluctuations defines whether the system is stable or not. Stability conditions depend on the spatial dimensionality $d$ and on the confining dimension $D$ of the system. The consideration shows that mesoscopic systems, experiencing Bose-Einstein condensation, are stable when: (i) ideal Bose gas is confined in a rectangular box of spatial dimension $d>2$ above $T_c$ and in a box of $d>4$ below $T_c$; (ii) ideal Bose gas is confined in a power-law trap of a confining dimension $D>2$ above $T_c$ and of a confining dimension $D>4$ below $T_c$; (iii) interacting Bose system is confined in a rectangular box of dimension $d>2$ above $T_c$, while below $T_c$ particle interactions stabilize the Bose-condensed system making it stable for $d=3$; (iv) nonlocal interactions diminish the condensation temperature, as compared with the fluctuations in a system with contact interactions.
description: Latex file, 27 pages
Food retailers as drivers of supply chain integration: A review
Creators: name: Hanf, Jon Henrich
name: Hanf, Jon Henrich
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Industrial Organization
subject: Institutional and Behavioral Economics
subject: Marketing
subject: FOS: Economics and business
subject: supply chains
subject: agri-food business
subject: verticalisation

description: In recent years strictly coordinated supply chains have gained in importance in the agri-food business sector. In this context this article aims to provide a review of the state of the art of verticalisation and of supply chain management in agri-food business. Because today food retailers can be considered to be one of the most powerful actors in this sector the article also aims to provide an overview of the connection between retail developments and verticalisation. The proposition in this article is that retailers can be regarded as drivers of supply chain integration and their role in supply chain management is confirmed by recent developments in ‘new markets’ such as China, India, and Russia.
title: The Otonbas of Ondo Kingdom & a Brief Incursion into Ondo Regency, by Otonba Akinfolarin
Creators: name: Ajiola, Felix Oludare
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: subject: yoruba
subject: Yoruba (peuple d'Afrique)
subject: Ondo
subject: Idanre
subject: oral history
subject: oral sources
subject: African history

description: Otonba Ruwaji Morakinyo Akinfolarin, “Opinion: The Oto Bas of Ondo Kingdom & A Brief Incursion into Ondo Regency.” In Ekimogun Day Celebration, 32nd Edition (n.p., 2020), 105-7
Quantum cosmological perfect fluid model and its classical analogue
Creators: name: Batista, A. B.
name: Fabris, J. C.
name: Goncalves, S. V. B.
name: Tossa, Joel
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The quantization of gravity coupled to a perfect fluid model leads to a Schrödinger-like equation, where the matter variable plays the role of time. The wave function can be determined, in the flat case, for an arbitrary barotropic equation of state $p = αρ$; solutions can also be found for the radiative non-flat case. The wave packets are constructed, from which the expectation value for the scale factor is determined. The quantum scenarios reveal a bouncing Universe, free from singularity. We show that such quantum cosmological perfect fluid models admit a universal classical analogue, represented by the addition, to the ordinary classical model, of a repulsive stiff matter fluid. The meaning of the existence of this universal classical analogue is discussed. The quantum cosmological perfect fluid model is, for a flat spatial section, formally equivalent to a free particle in ordinary quantum mechanics, for any value of $α$, while the radiative non-flat case is equivalent to the harmonic oscillator. The repulsive fluid needed to reproduce the quantum results is the same in both cases.
description: Latex file, 13 pages
Land repair fund: a model for exploiting the nexus between land repair, improved production and profit
Creators: name: Leake, John E.
name: Morison, Julian B.
name: Leake, John E.
name: Morison, Julian B.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: Farm Management
subject: Land Economics/Use
subject: Public Economics
subject: land repair fund
subject: environemental degradation issues
subject: ecological values
subject: temporary agreements
subject: title of land
subject: fund schemes

description: Typically, the techniques used by the best farm managers to improve productivity are correlated with actions that address land and water degradation issues, thus establishing a nexus between land repair, improved production and profit. To address broader environmental degradation issues, there are a number of programs through which landholders can voluntarily conserve areas of ecological value on their properties. They range from non-binding, temporary agreements to binding agreements that are attached perpetually to the title of the land. There are other ecosystem values for which incentives are being developed, for example, salinity, carbon sequestration and amenity purposes and often there is a range of these that may be applicable to a particular land area. This paper overviews some of the existing revolving fund schemes that have been implemented or are currently being tested in Australia, considers the payment of landholders for providing ecosystem services and then provides details on a case study of one type of revolving fund, the Land Repair Fund.
title: Creating an initial framework to judge value of digital platforms for the competency-based Continuing Professional Development (CPD) of physicians in Canada
Creators: name: Pyke, Joanna S.
Publisher: name: Electronic version published by Vancouver Island University
Year: 2021
Subjects: subject: Career development
subject: Competency-based education

description: Continuing Professional Development (CPD) is a professional requirement designed to encourage ongoing development of core physician competencies in Canada and elsewhere. While there are frameworks for assessing the applicability and value of physicians’ analog CPD, the same does not exist for assessing the applicability and value of digital platforms for CPD. The guiding research question for this Project is: Could an assessment framework be created to assess the value of digital platforms for the competency-based CPD of physicians in Canada? This Project developed an initial assessment framework to assess digital platforms that coordinate and deliver CPD opportunities for Canadian physicians residing in the province of British Columbia. The working definition for digital platforms in the context of this work is: Any platform to combine and deploy the use of digital technologies to incubate and coordinate an educational ecosystem for physicians and medical specialists. This Project developed and provided a framework to assess digital platforms for CPD planning purposes and to foster relatable and understandable insights for CPD program providers and physician learners. Emergent assessment criteria for physician CPD were adapted from other educational-professional contexts uncovered during a review of relevant literature. The target group of participants for the Project-associated survey were physicians practicing medicine in Canada. Physicians’ perspectives informed Project emergent framework development.
[Madame, J’ai l’honneur de vous faire connaître que sur proposition de la commission]
Creators: name: Jean, Gattegno
name: Gattegno, Jean
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Bourse
Centre National des Lettres

description: Destinataire : Tejera, Nivaria
description: L’auteur l’informe que, sur décision de la Commission de ‘’littérature étrangère’’, il a été décidé de lui accorder une bourse. Des détails sont donnés à ce sujet.
description: El autor le informa de que, por decisión de la Comisión de Literatura Extranjera, se decidió concederle una beca. Se dan detalles al respecto.
description: Note : Papier à en-tête : Centre National des Lettres. Ministère de la Culture et de la Communication. Paris, 75007.
description: Source: NT-AB-1988-04-18
description: Source: Localisation du document : Centre de Recherches Latino-Américaines (CRLA–Archivos, ITEM UMR8132). MSHS - Bât. A5, 1er étage 5 rue Théodore Lefebvre - TSA21103. 86073 Poitiers cedex 9.
BO'LAJAK BOSHLANG'ICH SINF O'QITUVCHILARINI PIRLS XALQARO BAHOLASH DASTURI ASOSIDA O'QITISHGA METODIK TAYYORGARLIGINI TAKOMILLASHTIRISH
Creators: name: Avazova, Durdona
Publisher: name: Zenodo
Year: 2024

description: Mazkur tezisda bo‘lajak boshlang‘ich sinf o‘qituvchilarini PIRLS xalqaro baholash dasturi asosida o‘qitishga metodik tayyorgarlikni takomillashtirish masalalari ko‘rib chiqiladi. Tezisda PIRLS dasturining ahamiyati, o‘qituvchilar malakasini oshirishga ta’siri va o‘quvchilar o‘qish savodxonligini baholashda samarali foydalanish yo‘llari tahlil qilinadi. Shuningdek, o‘qituvchilarni zamonaviy pedagogik texnologiyalar va metodik yondashuvlar asosida tayyorlash bo‘yicha tavsiyalar beriladi. Tadqiqot natijalari boshlang‘ich ta’lim sifati va o‘qituvchilarning kasbiy mahoratini oshirishga qaratilgan ilmiy-amaliy xulosalarni o‘z ichiga oladi.
Dynamical Friction in Interacting Relativistic Systems
Creators: name: Katz, Andrey
name: Kurkela, Aleksi
name: Soloviev, Alexander
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study dynamical friction in interacting relativistic systems with arbitrary mean free paths and medium constituent masses. Our novel framework recovers the known limits of ideal gas and ideal fluid when the mean free path goes to infinity or zero, respectively, and allows for a smooth interpolation between these limits. We find that in an infinite system the drag force can be expressed as a sum of ideal-gas-like and ideal-fluid-like contributions leading to a finite friction even at subsonic velocities. This simple picture receives corrections in any finite system and the corrections become especially significant for a projectile moving at a velocity $v$ close to the speed of sound $v\approx c_s$. These corrections smoothen the ideal fluid discontinuity around the speed of sound and render the drag force a continuous function of velocity. We show that these corrections can be computed to a good approximation within effective theory of viscous fluid dynamics.
description: 33 pages, 8 figures
Combustion quality of perennial wild plants common tansy (Tanacetum vulgare L.), common knapweed (Centaurea nigra L.) and mugwort (Artemisia vulgaris L.)
Creators: name: Von Cossel, M.
name: Lebendig, F.
name: Müller, M.
name: Jablonowski, N.D.
Publisher: name: Zenodo
Year: 2021

description: Perennial wild plants (PWPs) common tansy, common knapweed, and mugwort provide the greatest long-term methane yield within novel perennial wild plant mixtures. The PWPs also provide a rich nutritional resource and habitat for animals, especially pollinators. Harvesting in winter would enhance these ecosystem services. PWP biomass would then be more suitable for thermochemical conversion, like Sida, but this has not yet been reported.
[Chère Nivaria, Votre lettre arrive au moment où je pars en tournée éditoriale]
Creators: name: Hubert, Nyssen
name: Nyssen, Hubert
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Publication
‘’Le Ravin’’
‘’La Spirale’’

description: Destinataire : Tejera, Nivaria
description: L’auteur l’informe, en réponse à sa lettre précédente, que la maison d’édition n’a nullement renoncé à faire la promotion de son livre ‘’Le Ravin’’. Il lui rappelle tout ce qui a déjà été fait et est en cours de réalisation, et donne des détails sur certains points.
description: El autor le informa, en respuesta a su carta anterior, que la editorial no ha renunciado en absoluto a promover su libro ''Le Ravin''. Le recuerda todo lo que ya se ha hecho y se está realizando, y da detalles sobre algunos puntos.
description: Note : Papier à en-tête : Actes Sud – Hubert Nyssen Éditeur.
description: Source: NT-AB-1986-05-21
description: Source: Localisation du document : Centre de Recherches Latino-Américaines (CRLA–Archivos, ITEM UMR8132). MSHS - Bât. A5, 1er étage 5 rue Théodore Lefebvre - TSA21103. 86073 Poitiers cedex 9.
description: Relation: NT-AB-1986-05-18
description: Relation: NT-AB-1986-06-12
First-order symmetrizable hyperbolic formulations of Einstein's equations including lapse and shift as dynamical fields
Creators: name: Alvi, Kashif
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: First-order hyperbolic systems are promising as a basis for numerical integration of Einstein's equations. In previous work, the lapse and shift have typically not been considered part of the hyperbolic system and have been prescribed independently. This can be expensive computationally, especially if the prescription involves solving elliptic equations. Therefore, including the lapse and shift in the hyperbolic system could be advantageous for numerical work. In this paper, two first-order symmetrizable hyperbolic systems are presented that include the lapse and shift as dynamical fields and have only physical characteristic speeds.
description: 11 pages
Reduction of noise and bias in randomly sampled power spectra
Creators: name: Buchhave, Preben
name: Velte, Clara M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Signal Processing (eess.SP)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We consider the origin of noise and distortions in power spectral estimates of randomly sampled data, specifically velocity data measured with a burst-mode laser Doppler anemometer. The analysis guides us to new ways of reducing noise and removing spectral bias, e.g. distortions caused by modifications of the ideal Poisson sample rate caused by dead time effects and correlations between velocity and sample rate. The noise and dead time effects for finite records are shown to tend to previous results for infinite time records and ensemble averages. For finite records we show that the measured sampling function can be used to correct the spectra for noise and dead time effects by a deconvolution process. We also describe a novel version of a power spectral estimator based on a fast slotted autocovariance algorithm.
[Querida Nivaria Tejera, Otra cara de Bretaña para contestar la suya]
Creators: name: Albert, Bensoussan
name: Bensoussan, Albert
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Littérature
‘’Espero la noche para soñarte, Revolución’’

description: Destinataire : Tejera, Nivaria
description: L’auteur l’informe que le bon rapport de lecture de Mauricio Wacquez pour son ouvrage ‘’Espero la noche para soñarte, Revolución’’ lui assure quasiment une publication en Espagne
description: El autor le informa que el buen informe de lectura de Mauricio Wacquez para su obra ''Espero la noche para soñarte, Revolución'' le asegura prácticamente una publicación en España
description: Note : Carte postale : Couleur de Bretagne – La Côte d'Émeraude. Dinard 35800 (Ille-et-Vilaine).
description: Source: NT-AB-1995-06-26
description: Source: Localisation du document : Centre de Recherches Latino-Américaines (CRLA–Archivos, ITEM UMR8132). MSHS - Bât. A5, 1er étage 5 rue Théodore Lefebvre - TSA21103. 86073 Poitiers cedex 9.
Potential returns to the Australian sheep and wool industries from effective R&D and promotion investments and their sensitivities to assumed elasticity values
Creators: name: Mounter, Stuart W.
name: Griffith, Garry R.
name: Piggott, Roley R.
name: Fleming, Euan M.
name: Zhao, Xueyan
name: Mounter, Stuart W.
name: Griffith, Garry R.
name: Piggott, Roley R.
name: Fleming, Euan M.
name: Zhao, Xueyan
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Farm Management
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Research Methods/ Statistical Methods
subject: equilibrium displacement model
subject: EDM
subject: wool industry
subject: stochastic sensitivity analysis
subject: generic promotions

description: Mounter et al. (2007) developed an equilibrium displacement model (EDM) of the Australian sheepmeat and wool industries. In this paper the EDM is used to estimate the potential annual returns and their distribution among the various industry sectors for nine hypothetical investment scenarios. Initially, the EDM is solved for the base set of parameter values. A formal stochastic sensitivity analysis is then undertaken to account for the uncertain parameter values in the model. The results were found to be relatively robust to different parameter values, indicating that the model as specified provides a credible framework to estimate and compare the potential impacts from new technologies, generic promotions and other industry changes in a consistent way.
Does the Masters Hypothesis Explain Recent Food Price Spikes?
Creators: name: Irwin, Scott H.
name: Irwin, Scott H.
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agricultural and Food Policy
subject: Demand and Price Analysis
subject: Risk and Uncertainty
subject: agriculture
subject: futures markets
subject: index investment
subject: Masters Hypothesis
subject: speculation

description: The Masters Hypothesis is the claim that unprecedented buying pressure in recent years from commodity index investors created massive bubbles in food and energy prices. A number of recent studies investigate the empirical relationship between index investment and price movements in agricultural futures markets. One line of research uses time-series regression tests, such as Granger causality tests, to investigate the relationship between price movements and index positions. This research provides very little evidence supporting the Masters Hypothesis in agricultural futures markets. A second line of research uses cross-sectional regression tests and studies in this area also provide very limited evidence in favor of the Masters Hypothesis for agricultural futures markets. A third line of research investigates whether there is a significant relationship between commodity index trading and the difference, or spread, between futures prices of different contract maturities. These studies provide a range of results depending on the type of test. However, the bulk of the evidence indicates either no relationship or a negative relationship, which is once again inconsistent with the Masters Hypothesis. Overall, this growing body of literature fails to find compelling evidence that buying pressure from commodity index investment in recent years caused a massive bubble in agricultural futures prices. The Masters Hypothesis is simply not a valid characterization of reality.