cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Intelligent computational model for the classification of Covid-19 with chest radiography compared to other respiratory diseases
Creators: name: Santos, Paula
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Lung X-ray images, if processed using statistical and computational methods, can distinguish pneumonia from COVID-19. The present work shows that it is possible to extract lung X-ray characteristics to improve the methods of examining and diagnosing patients with suspected COVID-19, distinguishing them from malaria, dengue, H1N1, tuberculosis, and Streptococcus pneumonia. More precisely, an intelligent computational model was developed to process lung X-ray images and classify whether the image is of a patient with COVID-19. The images were processed and extracted their characteristics. These characteristics were the input data for an unsupervised statistical learning method, PCA, and clustering, which identified specific attributes of X-ray images with Covid-19. The introduction of statistical models allowed a fast algorithm, which used the X-means clustering method associated with the Bayesian Information Criterion (CIB). The developed algorithm efficiently distinguished each pulmonary pathology from X-ray images. The method exhibited excellent sensitivity. The average recognition accuracy of COVID-19 was 0.93 and 0.051.
description: 12 pages, 7 figures. David C. Wyld et al. (Eds): SAIM, ACSIT, SNLP, ICITE, CoNeCo, ITCA, SIPM - 2021
Additional file 1 of Functional characterization of Fur in iron metabolism, oxidative stress resistance and virulence of Riemerella anatipestifer
Creators: name: Huang, Mi
name: Liu, Mafeng
name: Liu, Jiajun
name: Zhu, Dekang
name: Tang, Qianying
name: Jia, Renyong
name: Chen, Shun
name: Zhao, Xinxin
name: Yang, Qiao
name: Wu, Ying
name: Zhang, Shaqiu
name: Huang, Juan
name: Ou, Xumin
name: Mao, Sai
name: Gao, Qun
name: Sun, Di
name: Wang, Mingshu
name: Cheng, Anchun
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. The bacterial strains and plasmids used in this study.
title: Combination of Bacillus thuringiensis and Habrobracon hebetor for the biological control of Plodia interpunctella
Creators: name: Akinkurolere, R. O.
name: Zhang, H.
Publisher: name: Julius Kühn-Institut
Year: 2010
Subjects: subject: Bacillus thuringiensis
subject: Habrobracon hebetor
subject: Plodia interpunctella
subject: Pest management
subject: Parasitoid

description: Julius-Kühn-Archiv; 425; 772-773
Prevalence of High X-ray Obscuring Columns among AGN that Host H$_2$O Masers
Creators: name: Greenhill, Lincoln J.
name: Tilak, Avanti
name: Madejski, Grzegorz
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Of 104 AGN known to exhibit H$_2$O maser emission, X-ray data that enable estimation of column densities, or lower limits, are available for 42. Contributing to this, we report analysis of new and archival X-ray data for 8 galaxies and collation of values for three more. Maser emission is indicative of large columns of cold gas, and in five of the eight new cases, maser spectra point toward origins in accretion disks viewed close-to edge-on (a.k.a. "disk-maser" systems). In these, we detect hard continuum and Fe K$α$ emission with equivalent widths on the order of 1 keV, which is consistent with Compton reflection, fluorescence by cold material, and obscuring columns $\ga 10^{24}$ cm$^{-2}$. Reviewing the full sample of 42, 95% exhibit N$_{\rm H} >10^{23}$ cm$^{-2}$ and 60% exhibit N$_{\rm H} >10^{24}$ cm$^{-2}$. Half of these are now recognized to be disk masers (up from 13); in this sub-sample, which is likely to be more homogeneous vis-á-vis the origin of maser emission, 76% exhibit N$_{\rm H} >10^{24}$ cm$^{-2}$. The probability of a common parent distribution of columns for disk-masers and other AGN masers is <3%. Because ground-based surveys of AGN to detect new disk masers are relatively unbiased with respect to X-ray brightness and comparatively inexpensive, they may also be efficient guides for the sensitive pointed X-ray observations required to identify Compton-thick objects outside of shallow surveys.
description: 14 pages, 3 tables and 2 figures. Accepted for publication by ApJL
Additional file 1 of A retrospective study on the combined biomarkers and ratios in serum and pleural fluid to distinguish the multiple types of pleural effusion
Creators: name: Lin, Liyan
name: Li, Shuguang
name: Xiong, Qiao
name: Wang, Hui
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Hematology

description: Additional file 1: Supplementary figures and tables mentioned in the main text (Figures S1–S10 and Tables S1–S10).
On blocks of Deligne's category Rep(S_t)
Creators: name: Comes, Jonathan
name: Ostrik, Victor
Publisher: name: arXiv
Year: 2009
Subjects: subject: Representation Theory (math.RT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics

description: Recently P. Deligne introduced the tensor category Rep(S_t) (for t not necessarily an integer) which in a certain precise sense interpolates the categories Rep(S_d) of representations of the symmetric groups S_d. In this paper we describe the blocks of Deligne's category Rep(S_t).
description: 43 pages, final version, includes an added appendix as well as other modifications recommended by the referee
Dual-microcomb generation in a synchronously-driven waveguide ring resonator
Creators: name: Xu, Yiqing
name: Erkintalo, Miro
name: Lin, Yi
name: Coen, Stephane
name: Ma, Huilian
name: Murdoch, Stuart G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Microcombs -- optical frequency combs generated in coherently-driven nonlinear microresonators -- have attracted significant attention over the last decade. The ability to generate two such combs in a single resonator device has in particular enabled a host of applications from spectroscopy to imaging. Concurrently, novel comb generation techniques such as synchronous pulsed driving have been developed to enhance the efficiency and flexibility of microcomb generation. Here we report on the first experimental demonstration of dual-microcomb generation via synchronous pulsed pumping of a single microresonator. Specifically, we use two electro-optically generated pulse trains derived from a common continuous wave laser to simultaneously drive two orthogonal polarization modes of an integrated silica ring resonator, observing the generation of coherent dissipative Kerr cavity soliton combs on both polarization axes. Thanks to the resonator birefringence, the two soliton combs are associated with different repetition rates, thus realizing a dual-microcomb source. To illustrate the source's application potential, we demonstrate proof-of-concept spectroscopic measurements.
An expanding one-zone model for studying blazars emission
Creators: name: Boula, Stella S.
name: Mastichiadis, Apostolos
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Context.Blazars, a sub-category of Active Galactic Nuclei, are characterized by their non-thermal variable emission. This emission extends over the whole electromagnetic spectrum and is a consequence of particle acceleration inside their relativistic jets. However, especially the relation of radio emission to that at higher frequencies remains an open question. Aims. Observations of blazar emission show that the location of radio might be very different from the one where the rest of the spectrum is produced and often requires separate modeling. We aim to produce both emissions within the context of one model. Methods. We construct a self-consistent one-zone expanding leptonic model for studying the connection between the radio emission and the emission at higher frequencies and we apply it to the flaring states of blazars. Assuming an accelerating episode as the source moves down the jet and expands, we numerically study the electron evolution as they lose energy due to adiabatic expansion and synchrotron/inverse Compton radiation. Results. We find that high-frequency radiation mimics the electron injection and is mainly produced close to the acceleration site where cooling is strong. In contrast, the radio emission is produced further down the jet when the emitting region has become optically thin to synchrotron self-absorption due to expansion. We present briefly the role of the initial parameters, such as the magnetic field strength, the electron luminosity and expansion velocity, on the localization of the radio emission site. We show that the expanding one-zone model is inherently different from the non-expanding one and, in addition, it requires more parameters. For example, we apply our approach to the observational data of a Mrk 421 $γ$-ray - radio flare observed in 2013.
description: 11 pages, 10 figures, accepted for publication in A&A
The capuan gateway and its sculpture
Creators: name: Milsom, Elizabeth Ann
Publisher: name: University of British Columbia
Year: 2010

description: Since nothing remains in situ of the Capuan gateway-except the bases of the towers, and since the surviving sculptural pieces are now in the local museum, it is exceedingly difficult to visualize this key monument as it seems to have appeared to those who passed through it centuries ago and referred to it in chronicles which have come down to us. Chapter I deals with the history of the period and Italy's place in it, the artistic creativity of the area concerned, and relevant details regarding the life of Frederick II and his times. Chapter II lists and describes the few extant documents relating to the archway. In connection with these are the surviving drawings or sketches which are described and compared, as well as the hypothetical reconstructions which have appeared over the past some 40 years. Chapter III describes the surviving pieces of sculpture and notes the opinions of various authorities. Putative heads of the emperor are referred to and examples of classical prototypes given with respect to the most important pieces. Examples of comparable iconography as seen in the minor arts are mentioned. To my mind, these aspects have not been sufficiently stressed heretofore. Chapter IV investigates the possible influences of earlier gateways in Italy as well as the influence brought to bear on the design of subsequent archways. Because of Frederick's philosophy and contemporary politico-religious affairs, there is a discussion of the symbolism of the gate in general, as well as of the imperial role as sun-king and the iconography of the lion-throne. In the literature of the Capuan Gate, none of these elements have been referred to, as far as I know, although allusions are to be seen in related readings.
Rescuing Unrecognized Exoplanet Candidates in Kepler Data
Creators: name: Bryson, Steve
name: Flynn, Kylar
name: Hanna, Halle
name: Green, Talia
name: Coughlin, Jeffrey L.
name: Kunimoto, Michelle
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The prime Kepler mission detected 34,032 transit-like signals, out of which 8,054 were identified as likely due to astrophysical planet transits or eclipsing binaries. We manually examined 306 of the remaining 25,978 detections, and found six plausible transiting or eclipsing objects, five of which are plausible planet candidates (PCs), and one stellar companion. One of our new PCs is a possible new second planet in the KOI 4302 system. Another new PC is a possible new planet around the KOI 4246, and when combined with a different possible planet rescued by the False Positive Working Group, we find that KOI 4246 may be a previously unrecognized three-planet system. \end{abstract}
description: Accepted by PASP
title: Residual insecticides, inert dusts and botanicals for the protection of durable stored products against pest infestation in developing countries
Creators: name: Obeng-Ofori, D.
Publisher: name: Julius Kühn-Institut
Year: 2010
Subjects: subject: botanicals
subject: residual insecticides
subject: inert dusts
subject: grain storage
subject: storage pests
subject: stored products

description: Julius-Kühn-Archiv; 425; 774-788
title: Residual efficacy of aerosols to control Tribolium castaneum and Tribolium confusum
Creators: name: Arthur, F. H.
Publisher: name: Julius Kühn-Institut
Year: 2010
Subjects: subject: Aerosol
subject: Insecticide
subject: Insect growth regulator
subject: Tribolium castaneum
subject: Tribolium confusum

description: Julius-Kühn-Archiv; 425; 789-792
Study of the X-ray Pulsar XTE J1946+274 with NuSTAR
Creators: name: Gorban, A. S.
name: Molkov, S. V.
name: Tsygankov, S. S.
name: Lutovinov, A. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the results of our spectral and timing analysis of the emission from the transient X-ray pulsar XTE J1946+274 based on the simultaneous NuSTAR and Swift/XRT observations in the broad energy range 0.3-79 keV carried out in June 2018 during a bright outburst. Our spectral analysis has confirmed the presence of a cyclotron absorption line at an energy $\sim38$ keV in both averaged and phase-resolved spectra of the source. Phase-resolved spectroscopy has also allowed the variation in spectral parameters with neutron star rotation phase, whose period is $\simeq15.755$ s, to be studied. The energy of the cyclotron line is shown to change significantly (from $\simeq34$ to $\simeq39$ keV) on the scale of a pulse, with the line width and optical depth also exhibiting variability. The observed behavior of the cyclotron line parameters can be interpreted in terms of the model of the reflection of emission from a small accretion column (the source's luminosity at the time of its observations was $\sim 3 \times 10^{37}$ erg s$^{-1}$) off the neutron star surface. The equivalent width of the iron line has been found to also change significantly with pulse phase. The time delay between the pulse and equivalent width profiles can be explained by the reflection of neutron star emission from the outer accretion disk regions.
description: 19 pages, 7 figures, 1 table
A comparative evaluation of hospital versus clinic education of tuberculosis patients in Vancouver
Creators: name: Jang, Kathy
Publisher: name: University of British Columbia
Year: 2010

description: A survey was conducted during the months of June and July 1976 at the Willow Chest Clinic in Vancouver, British Columbia, using a questionnaire designed to test tuberculosis patients' knowledge on the cause, course, treatment and prevention of tuberculosis, and their attitude towards the patient education process. The questionnaire was administered to 159 new active tuberculosis patients attending the Clinic for follow-up treatment. Approximately half of this population had been hospitalized at Pearson Hospital during their initial treatment phase, while the other half was treated at the Willow Chest Clinic since the diagnosis of the disease. A control population of 162 patients matched by age, sex, education and ethnic origin was selected from patients attending the Clinic for other respiratory diseases. The objective of the study was to compare hospital versus clinic education of tuberculosis patients in Vancouver, since the product and the process of patient education have an important impact on the treatment and control of tuberculosis. The tuberculosis patients knew more about the disease than the non-tuberculosis patients. The Hospitalized patients had consistently and significantly higher scores than the Control group. The Non-Hospitalized patients had statistically higher scores than the Control only in the area of knowledge of treatment of tuberculosis. The patients who had been hospitalized knew more about the disease than patients who were treated on an ambulatory basis since the diagnosis of the disease. Biases such as that resulting from the selection process of the Study and Control groups, the design and administration of the questionnaire could have contributed to the differences in the scores. Age, education and ethnic origin were found to have significant impact on the knowledge of the patients. However, these variables had been adjusted for in the final analysis of the scores. Since the hospital had provided more patient education opportunities than the clinic, the higher scores could be due to the patient education process. Patient education could have increased the knowledge of tuberculosis among the hospitalized patients. The importance of good communication in patient education was reiterated. That these different groups of patients, by virtue of their differences in age, education and ethnic origin, had their unique education needs was evident from the patients' response. Hence different means of communicating disease information in varying amounts would be necessary. The use of non-tuberculosis patients to estimate the level of knowledge of tuberculosis patients prior to their disease has not been completely satisfactory. It is recommended that future patient education programs have mechanisms for evaluation built into their design. This would allow a better assessment of the effectiveness of patient education.
Could Fermion Masses Play a Role in the Stabilization of the Dilaton in Cosmology?
Creators: name: Cabo, Alejandro
name: Brandenberger, Robert
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the possibility that the Dilaton is stabilized by the contribution of fermion masses to its effective potential. We consider the Dilaton gravity action in four dimensions to which we add a mass term for a Dirac fermion. Such an action describes the interaction of the Dilaton with the fermions in the Yang-Mills sector of the coupled supergravity/super-Yang-Mills action which emerges as the low energy effective action of superstring theory after the extra spatial dimensions have been fixed. The Dilaton couples to the Fermion mass term via the usual exponential factor of this field which multiplies the non-kinetic terms of the matter Lagrangian, if we work in the Einstein frame. In the kinetic part of the Fermion action in the Einstein frame the Dilaton does not enter. Such masses can be generated in several ways: they can arise as a consequence of flux about internal spatial dimensions, they may arise as thermal fermion masses in a quasi-static phase in the early universe, and they will arise after the breaking of supersymmetry at late times. The vacuum contribution to the potential for the Dilaton is evaluated up to two loops. The result shows a minimum which could stabilize the Dilaton for reasonable ranges of parameter values.
description: 11 pages, 1 figure; shortened version
Quantum multi-factor authentication
Creators: name: Murray, Hazel
name: Malone, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We present a quantum multi-factor authentication mechanism based on the hidden-matching quantum communication complexity problem. It offers step-up graded authentication for users via a quantum token. In this paper, we outline the protocol, demonstrate that it can be used in a largely classical setting, explain how it can be implemented in SASL, and discuss arising security features. We also offer a comparison between our mechanism and current state-of-the-art multi-factor authentication mechanisms.
title: Management of the yam moth, Dasyses rugosella Stainton, a pest of stored yam tubers (Dioscorea spp.) using plant products
Creators: name: Ashamo, M. O.
Publisher: name: Julius Kühn-Institut
Year: 2010
Subjects: subject: Toxicity
subject: Dasyses rugosella
subject: Management
subject: Mortality
subject: Powder extract

description: Julius-Kühn-Archiv; 425; 793-798
title: Role of SSD1 in Phenotypic Variation of Saccharomyces cerevisiae Strains Lacking DEG1-Dependent Pseudouridylation
Creators: name: Khonsari, Bahar
name: Klassen, Roland
name: Schaffrath, Raffael
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: yeast
subject: SSD1
subject: pseudouridine
subject: tRNA modification
subject: 630
subject: Transfer-RNS
subject: Modifizierung
subject: Pseudouridin

description: Gefördert durch den Publikationsfonds der Universität Kassel
Vascular smooth muscle and red cell sodium and potassium in haemorrhagic shock measured by lithium substitution analysis
Creators: name: Day, Brian
Publisher: name: University of British Columbia
Year: 2010

description: A new method of measuring intracellular Na and K using Li substitution was applied to a study of vascular smooth muscle and red cell Na changes in haemorrhagic shock. A rat haemorrhagic shock model was used. Controlled haemorrhage was allowed with a syringe reservoir and the arterial blood pressure was maintained at 30 mm Hg. In a pilot study, using 20 rats, the plasma Na and plasma K were monitored. A fall in plasma Na and a rise in plasma K were observed. Both returned towards normal following retransfusion and recovery for one hour. In vascular smooth muscle, significant changes in both cell Na and K occurred following a 2 hour period of haemorrhagic shock. The vascular smooth muscle cell Na in control animals was 27.0±1.5 mEq/kg dry weight and 42.7±1.4 mEq/kg dry weight in the shocked animals (P<0.001). The cell K was 127.8±6.0 in the control animals and 74.7±4.2 in the shocked animals. In red cell studies, significant increases in red cell Na were found. The red cell Na in controls was 7.09±0.29 mEq/litre cells, whilst in the shocked animals the red cell Na was 8.26±0.33 mEq/litre cells (P<0.025). This was associated with a small but not statistically significant fall in red cell K. In both sets of experiments, the plasma Na and K were monitored and similar changes to those of the pilot study were found. Following retransfusion and recovery for 1 hour in the vascular tissue study and 2 hours in the red cell study, no significant recovery of cellular Na or K occurred. The results of these studies are consistent with a significant impairment of cell membrane function in haemorrhagic shock. The importance of both normal vascular responses and red cell function following severe haemorrhage is obvious. The fact that both may be impaired may have important implications in relation to the treatment and prognosis of haemorrhagic shock.
title: Effect of four powdered spices as repellents against adults of Rhyzopertha dominica (F.), Sitophilus granarius (L.) and Tribolium castaneum (Herbst) in laboratory conditions
Creators: name: Shayesteh, N.
name: Ashouri, S.
Publisher: name: Julius Kühn-Institut
Year: 2010
Subjects: subject: repellency
subject: spices
subject: Rhyzopertha dominica
subject: Sitophilus granarius
subject: Tribolium castaneum

description: Julius-Kühn-Archiv; 425; 799-804
title: Efficacy of insecticides for control of stored-product psocids
Creators: name: Athanassiou, C. G.
name: Arthur, F. H.
name: Throne, J. E.
name: Opit, G. P.
name: Hasan, M. M.
name: Aikins, M. J.
name: Phillips, T. W.
name: Kavallieratos, N. G.
Publisher: name: Julius Kühn-Institut
Year: 2010
Subjects: subject: Psocoptera
subject: stored grains
subject: grain protectants
subject: sulfuryl fluoride

description: Julius-Kühn-Archiv; 425; 805-814
title: Efficacy of dust formulations of spinosad for controlling insects infesting stored wheat
Creators: name: Bonjour, E. L.
name: Opit, G. P.
Publisher: name: Julius Kühn-Institut
Year: 2010
Subjects: subject: spinosad dust formulations
subject: Rhyzopertha dominica
subject: Sitophilus oryzae
subject: Tribolium castaneum
subject: Plodia interpunctella

description: Julius-Kühn-Archiv; 425; 815-818
title: Horizontal transfer of methoprene in Tribolium castaneum
Creators: name: Tucker, A. M.
name: Campbell, J.
name: Arthur, F. H.
name: Zhu, K. Y.
Publisher: name: Julius Kühn-Institut
Year: 2010
Subjects: subject: red flour beetle
subject: Tribolium castaneum
subject: methoprene
subject: horizontal transfer

description: Julius-Kühn-Archiv; 425; 819-824
Additional file 2 of Functional characterization of Fur in iron metabolism, oxidative stress resistance and virulence of Riemerella anatipestifer
Creators: name: Huang, Mi
name: Liu, Mafeng
name: Liu, Jiajun
name: Zhu, Dekang
name: Tang, Qianying
name: Jia, Renyong
name: Chen, Shun
name: Zhao, Xinxin
name: Yang, Qiao
name: Wu, Ying
name: Zhang, Shaqiu
name: Huang, Juan
name: Ou, Xumin
name: Mao, Sai
name: Gao, Qun
name: Sun, Di
name: Wang, Mingshu
name: Cheng, Anchun
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2. The primers used in this study.
Questionnaire d'enquête adressé aux étudiants de l'université pendant la pèriode d'enseignement à distance lié au covid-19 - Survey questionnaire addressed to university students
Creators: name: MARTIN, PERRINE
name: GEBEIL, SOPHIE
name: FELIX, CHRISTINE
name: FILIPPI, PIERRE-ALAIN
Publisher: name: Zenodo
Year: 2021
Subjects: enseignement à distance, université, étudiant, COVID-19

description: Ce questionnaire a été diffusé à partir du 7 décembre 2020 et clôturer le 21/01/2021 à tous les étudiants en France en vue de comprendre comment ils et elles s’efforcent d’organiser leur travail à distance pour répondre aux demandes de leurs enseignants et aux exigences de leur formation universitaire. Cette recherche fait suite à un premier travail réalisé dans le cadre du projet O.U.F. (Observation des Usages numériques dans l’activité enseignante à distance à des fins de Formation) associant plusieurs disciplines. En effet, pendant le premier confinement du printemps 2020, cette enquête nous a permis de rassembler plus de 7500 réponses et d’engager une réflexion sur les transformations de l’activité des enseignants et de leurs élèves. Les résultats de cette enquête permettront de contribuer aux débats autour des questions qui ne manqueront pas de se poser à propos de l’usage du numérique et des nouvelles formes d’enseignement à distance. A ce jour le questionnaire à permis d'obtenir 11516 réponses.
Sample description, Tof-SIMS experimental conditions, ToF-SIMS, ATR-FTIR and XRD complementary results and PCA on ToF-SIMS results from Secondary ion mass spectrometry, a powerful tool for revealing ink formulations and animal skins in medieval manuscripts
Creators: name: Gravis, David
name: Roy, Nicolas
name: Ruffini-Ronzani, Nicolas
name: Houssiau, Laurent
name: Felten, Alexandre
name: Tumanov, Nikolay
name: Deparis, Olivier
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: 90301 Biomaterials
subject: FOS: Medical engineering
subject: 30399 Macromolecular and Materials Chemistry not elsewhere classified
subject: FOS: Chemical sciences
subject: 30699 Physical Chemistry not elsewhere classified

description: Sample description, Tof-SIMS experimental conditions, ToF-SIMS, ATR-FTIR and XRD complementary results and PCA on ToF-SIMS results
Dynamical Mean Field Study of The Dirac Liquid
Creators: name: Jafari, S. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Renormalization is one of the basic notions of condensed matter physics. Based on the concept of renormalization, the Landau's {\em Fermi liquid} theory has been able to explain, why despite the presence of Coulomb interactions, the free electron theory works so well for simple metals with extended Fermi surface (FS). The recent synthesis of graphene has provided the condensed matter physicists with a low energy laboratory of Dirac fermions where instead of a FS, one has two Fermi points. Many exciting phenomena in graphene can be successfully interpreted in terms of free Dirac electrons. In this paper, employing dynamical mean field theory (DMFT), we show that an interacting Dirac sea is essentially an effective free Dirac theory. This observation suggests the notion of {\em Dirac liquid} as a fixed point of interacting 2+1 dimensional Dirac fermions. We find one more fixed point at strong interactions describing a Mott insulating state, and address the nature of semi-metal to insulator (SMIT) transition in this system.
description: 5 figures, 5 pages
Constituting ethnic difference : an ethnography of the Portuguese immigrant experience in Vancouver
Creators: name: Boulter, Alison Isobel
Publisher: name: University of British Columbia
Year: 2010

description: Ethnic groups are a visible feature of Canadian society. That this is so indicates that there must be methods for making them recognizable as well as methods of accounting for that visible difference. In this thesis, I am concerned to explicate the socially organized practices which constitute particular members and groups in society as different from other members and groups. The argument presented is that it is the practices of all members of society which constitute this difference, rather than the difference being an attribute of any particular ethnic, or immigrant group. The work proceeds in two ways. First, the constitution of ethnic difference, located in the theoretical literature, is investigated. It is demonstrated that the theoretical formulations rest on an unexplicated common-sense understanding of ethnic groups and their members as different. Second, observations and descriptions of the everyday lived relations of Portuguese immigrants are analyzed. The observations include interviews with social service workers, taped discussions of participants at a conference on multiculturalism, as well as interviews with Portuguese immigrants themselves. This second source of data provides an understanding of how difference is constituted in descriptions and explanations of ethnic phenomena in Vancouver. Through the use of a method of analysis derived from Marx and developed for sociology by Smith, I have focussed the ethnography on the socially organized practices which constitute ethnic difference in Vancouver. The enactment of ethnicity in the theoretical literature, in the fieldwork, and in the observations, explanations, descriptions and accounts are treated a6 data for the analysis of the method by which ethnic difference is constituted socially. It is demonstrated that descriptions which reference cultural origin, like those which reference personality factors, disattend to the constitution of social location in Vancouver. Cultural descriptions are a method of constituting immigrant/ethnic difference. The location of immigrant/ethnic groups and their members within a particular social organization is recreated at every moment in the descriptions and other activities of members of society within the family, labour force and social service delivery system of Vancouver society.
Impact of breeding for reduced methane emissions in New Zealand sheep on maternal and health traits
Creators: name: Hickey, Sharon
name: Bain, Wendy
name: Bilton, Timothy
name: Greer, Gordon
name: Elmes, Sara
name: Bryson, Brooke
name: Pinares-Patiño, Cesar
name: Wing, Janine
name: Jonker, Arjan
name: Young, Emily
name: Knowler, Kevin
name: Pickering, Natalie
name: Dodds, Ken
name: Janssen, Peter
name: McEwan, John
name: Rowe, Suzanne
Publisher: name: AgResearch
Year: 2023
Subjects: Animal reproduction and breeding

description: Enteric methane emissions from ruminants account for ∼35% of New Zealand’s greenhouse gas emissions. This poses a significant threat to the pastoral sector. Breeding has been shown to successfully lower methane emissions, and genomic prediction for lowered methane emissions has been introduced at the national level. The long-term genetic impacts of including low methane in ruminant breeding programs, however, are unknown. The success of the New Zealand sheep industry is currently heavily reliant on the prolificacy, fecundity and survival of adult ewes. The objective of this study was to determine genetic and phenotypic correlations between adult maternal ewe traits (live weight, body condition score, number of lambs born, litter survival to weaning, pregnancy scanning and fleece weight), faecal and Nematodirus egg counts and measures of methane in respiration chambers. More than 9,000 records for methane from over 2,200 sheep measured in respiration chambers were collected over 10 years. Sheep were fed on a restricted diet calculated as approximately twice the maintenance. Methane measures were converted to absolute daily emissions of methane measured in g per day (CH4/day). Two measures of methane yield were recorded: the ratio of CH4 to dry matter intake (g CH4/kg DMI; CH4/DMI) and the ratio of CH4 to total gas emissions (CH4/(CH4 + CO2)). Ewes were maintained in the flocks for at least two parities. Non-methane trait data from over 8,000 female relatives were collated to estimate genetic correlations. Results suggest that breeding for low CH4/DMI is unlikely to negatively affect faecal egg counts, adult ewe fertility and litter survival traits, with no evidence for significant genetic correlations. Fleece weight was unfavourably (favourably) correlated with CH4/DMI (rg = −0.21 ± 0.09). Live weight (rg = 0.3 ± 0.1) and body condition score (rg = 0.2 ± 0.1) were positively correlated with methane yield. Comparing the two estimates of methane yield, CH4/DMI had lower heritability and repeatability. However, correlations of both measures with adult ewe traits were similar. This suggests that breeding is a suitable mitigation strategy for lowering methane yield, but wool, live weight and fat deposition traits may be affected over time and should be monitored.
A Survey of Static Formal Methods for Building Dependable Industrial Automation Systems
Creators: name: Sinha, Roopak
name: Patil, Sandeep
name: Gomes, Luis
name: Vyatkin, Valeriy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Industrial automation systems (IAS) need to be highly dependable; they should not merely function as expected but also do so in a reliable, safe, and secure manner. Formal methods are mathematical techniques that can greatly aid in developing dependable systems and can be used across all phases of the system development life cycle (SDLC), including requirements engineering, system design and implementation, verification and validation (testing), maintenance, and even documentation. This state-of-the-art survey reports existing formal approaches for creating more dependable IAS, focusing on static formal methods that are used before a system is completely implemented. We categorize surveyed works based on the phases of the SDLC, allowing us to identify research gaps and promising future directions for each phase.
description: Journal paper, 12 pages, 3 tables, 1 figure
Thomas Patch and the Manetti Chapel frescoes
Creators: name: Sutherland, Valerie
Publisher: name: University of British Columbia
Year: 2010

description: Thomas Patch (1725-1782) is a relatively unknown English artist of the eighteenth century whose claim to fame so far has rested in his caricature work. He went to Rome around 1747, was banished from there in 1755 and joined the English circle in Florence where he remained until his death in 1782. Patch's work in Florence included his copying of what Vasari had said to be a fresco cycle by Giotto in the Church of the Carmine. This cycle had been damaged in a fire that broke out in the old church in 1771, and it had to be destroyed to make way for the new church that was completed in 1773. What led Patch to do this work? How successful was he? We see the influences of Hugford and Bottari and the lively interest of connoisseurship in the medieval and the Trecento. Patch's skill as a copyist is analyzed and found to be excellent. There are now only twelve fragments left of the original fresco and they have been given a variety of attributions. On the basis of dating, this paper agrees with those who reject the Giotto attribution and it is not prepared to accept the Spinello Aretino one without additional confirmation. The cycle does not appear to fit the style and character of Spinello in the period to which it is usually assigned. Recent evidence however still makes it worth while to leave the door open to Spinello though on the basis of style and spatial utilization, other artists of this period should also be considered. When compared with other Saint John the Baptist cycles, the iconography shows the master of the Manetti Chapel frescoes to have been an inventive and imaginative artist whom both Masaccio and Agnolo Gaddi thought worthy of emulating and copying. His inventiveness is seen in the fact that though he seems to have got ideas from the Peruzzi Chapel and from the doors of the Baptistery, he put his own stamp on them. His angel in flight, his headless body of Saint John, his shivering Christ and his many re-arrangements of crowd scenes give ample evidence of an innovati.ve-ness which is only surpassed by his skill at integrating his scenes. Patch's engravings therefore should form an important incentive to further assessment of the work of Spinello and his possible influence on the late Trecento and Quattrocento Italian art. They also form a pathway for the study of influences of this period on eighteenth century English art. Patch represents a whole era of connoisseurship and is a possible source of valuable character study of the English emigre community of late eighteenth century Florence. His work merits a great deal more consideration than it has so far received in the history of art.
Supression of electron correlations in the superconducting alloys of Rh$_{17-x}$Ir$_x$S$_{15}$
Creators: name: Naren, H R
name: Thamizhavel, A
name: Nigam, A. K.
name: Ramakrishnan, S
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have studied the effect of Iridium doping (Rh$_{17-x}$Ir$_{x}$S$_{15}$) in the Rhodium sites of the strongly correlated superconductor Rh$_{17}$S$_{15}$. Even at low levels of doping (x = 1 and 2) we see a drastic change in the superconducting properties as compared to those of the undoped system. We deduce that there is a reduction in the density of states at the Fermi level from reduced Pauli susceptibility and Sommerfeld coefficient in the doped samples. Moreover, the second magnetization peak in the isothermal magnetization scan (`fishtail') which was very prominent in the magnetization data of the undoped crystal is suppressed in the doped samples. The temperature dependence of resistivity of the doped crystals show a remarkably different behavior from that of the undoped crystal with the appearance of a minima at lower temperatures, the position of which is fairly constant at different fields. Our data supports the notion that Iridium, which is a bigger atom than Rhodium expands the lattice thereby, reduces the electron correlations that existed due to the interaction between closer lying Rhodium atoms in the undoped system.
description: 5 figures and 1 table, accepted in Physica C
Policy Brief on  the impact of narratives on EU policymaking
Creators: name: Barana, Luca
name: Vigneri, Francesco
name: Daga, Giulia
Publisher: name: Zenodo
Year: 2023

description: This policy brief looks at the implications of migration narratives for European policymaking. It focuses on the circulation of narratives in the national media and the EU political and policy debates in two key moments: the proposal for a relocation scheme to redistribute asylum seekers among EU Member States in 2015, and the activation of the Temporary Protection Directive for refugees fleeing Ukraine in 2022. After presenting the findings of a research report (D8.1) produced in the framework of the Horizon EU project BRIDGES, this policy brief focuses on translating these findings into policy implications for the EU. The ultimate aim is to draft recommendations for members and officials of European institutions that may contribute to shaping narratives for fairer, comprehensive, and balanced European policy responses to migration and asylum.

Due to the high stakes that migration and asylum entail, institutions, political forces, and the media promote their own narratives to advocate for their preferred policy outcome. Depending on the policy solution that they are pushing forward – usually in favour or against EU-wide actions -, these narratives may identify different causes, heroes, and victims. After taking stock of dominant narratives in both case studies – namely, the one denouncing the divisions among member states in dealing with the 2015 migration and refugee ‘crisis’ and another in favour of solidarity-measures towards refugees fleeing Ukraine in 2022 – the brief thus argues that policymakers in the EU should (i) de-politicize discourse(s) on asylum and migration; (ii) encourage positive narratives in the media; (iii) make full use of EU institutional factors to filter populist narratives when they move from the political sphere to the policy sphere; (iv) frame narratives promoting policy solutions on migration within broader (geo)political policy areas of great value for European societies.
Spatial curvature sensitivity to local $H_0$ from the Cepheid distance ladder
Creators: name: Zuckerman, Ella
name: Anchordoqui, Luis A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Over the last few years, low- and high-redshift observations set off a tension in the measurement of the present-day expansion rate, $H_0$. Adding to the riddle, observational data from the Planck mission point to a $3.4σ$ evidence for a closed universe, further challenging the $Λ$CDM concordance model of cosmology. Recently, a direct-observational test has been proposed to discriminate effects of the spatial curvature in the cosmological model. The test is based on the fundamental distance--flux--redshift relation of the luminosity distance modulus, $Δμ$. We reexamine the outcomes of this test and show that achieving the required $Δμ$ sensitivity to discriminate among cosmological models is materially far more challenging than previously thought. Armed with supernova type Ia (SN Ia) data, calibrated using Cepheid measured distances, we apply the test to archetypal spatially non-flat models that ameliorate the $H_0$ tension and show that the $3σ$ contour of $Δμ$ predicted by these models overlaps the 68\% CL SN Ia residuals with respect to $Λ$CDM. This implies that the spatial curvature remains insensitive to local $H_0$ measurements from the Cepheid distance ladder.
description: 4 pages, 3 figures
Improved Measurement of Branching Fractions for pipi Transitions among Upsilon(nS)States
Creators: name: CLEO Collaboration
name: Bhari, S. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using samples of (5.93 +/- 0.10) x 10^6 Upsilon(3S) decays and (9.11 +/- 0.14) x 10^6 Upsilon(2S) decays collected with the CLEO detector, we report improved measurements of the branching fractions for the following five transitions: B(Upsilon(3S)-->Upsilon(1S) pi^+ pi^-) = (4.46 +/- 0.01 +/- 0.13)%, B(Upsilon(2S)-->Upsilon(1S) pi^+ pi^-) = (18.02 +/- 0.02 +/- 0.61)%, B(Upsilon(3S)-->Upsilon(1S) pi^0 pi^0) = (2.24 +/- 0.09 +/- 0.11)%, B(Upsilon(2S)-->Upsilon(1S) pi^0 pi^0) = (8.43 +/- 0.16 +/- 0.42)% and B(Upsilon(3S)-->Upsilon(2S) pi^0 pi^0) = (1.82 +/- 0.09 +/- 0.12)%. In each case the first uncertainty reported is statistical, while the second is systematic.
description: 11 pages, available at http://www.lns.cornell.edu/public/CLNS/, Accepted for Publication in Phys. Rev. D
Necessity of negativity in quantum theory
Creators: name: Ferrie, Christopher
name: Morris, Ryan
name: Emerson, Joseph
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A unification of the set of quasiprobability representations using the mathematical theory of frames was recently developed for quantum systems with finite-dimensional Hilbert spaces, in which it was proven that such representations require negative probability in either the states or the effects. In this article we extend those results to Hilbert spaces of infinite dimension, for which the celebrated Wigner function is a special case. Hence, this article presents a unified framework for describing the set of possible quasiprobability representations of quantum theory, and a proof that the presence of negativity is a necessary feature of such representations.
description: v2: new title, new author, new content
Decoupling Magnitude and Phase Estimation with Deep ResUNet for Music Source Separation
Creators: name: Kong, Qiuqiang
name: Cao, Yin
name: Liu, Haohe
name: Choi, Keunwoo
name: Wang, Yuxuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Deep neural network based methods have been successfully applied to music source separation. They typically learn a mapping from a mixture spectrogram to a set of source spectrograms, all with magnitudes only. This approach has several limitations: 1) its incorrect phase reconstruction degrades the performance, 2) it limits the magnitude of masks between 0 and 1 while we observe that 22% of time-frequency bins have ideal ratio mask values of over~1 in a popular dataset, MUSDB18, 3) its potential on very deep architectures is under-explored. Our proposed system is designed to overcome these. First, we propose to estimate phases by estimating complex ideal ratio masks (cIRMs) where we decouple the estimation of cIRMs into magnitude and phase estimations. Second, we extend the separation method to effectively allow the magnitude of the mask to be larger than 1. Finally, we propose a residual UNet architecture with up to 143 layers. Our proposed system achieves a state-of-the-art MSS result on the MUSDB18 dataset, especially, a SDR of 8.98~dB on vocals, outperforming the previous best performance of 7.24~dB. The source code is available at: https://github.com/bytedance/music_source_separation
description: 6 pages