cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
GRB Fermi-LAT afterglows: explaining flares, breaks, and energetic photons
Creators: name: Fraija, N.
name: Laskar, T.
name: Dichiara, S.
name: Beniamini, P.
name: Duran, R. Barniol
name: Dainotti, M. G.
name: Becerra, R. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Fermi-LAT collaboration presented the second gamma-ray burst (GRB) catalog covering its first 10 years of operations. A significant fraction of afterglow-phase light curves in this catalog cannot be explained by the closure relations of the standard synchrotron forward-shock model, suggesting that there could be an important contribution from another process. In view of the above, we derive the synchrotron self-Compton (SSC) light curves from the reverse shock in the thick- and thin-shell regime for a uniform-density medium. We show that this emission could explain the GeV flares exhibited in some LAT light curves. Additionally, we demonstrate that the passage of the forward shock synchrotron cooling break through the LAT band from jets expanding in a uniform-density environment may be responsible for the late time ($\approx10^2$ s) steepening of LAT GRB afterglow light curves. As a particular case, we model the LAT light curve of GRB 160509A that exhibited a GeV flare together with a break in the long-lasting emission, and also two very high energy photons with energies of 51.9 and 41.5 GeV observed 76.5 and 242 s after the onset of the burst, respectively. Constraining the microphysical parameters and the circumburst density from the afterglow observations, we show that the GeV flare is consistent with a SSC reverse-shock model, the break in the long-lasting emission with the passage of the synchrotron cooling break through the Fermi-LAT band and the very energetic photons with SSC emission from the forward shock when the outflow carries a significant magnetic field ($R_{\rm B} \simeq 30$) and it decelerates in a uniform-density medium with a very low density ($n=4.554^{+1.128}_{-1.121}\times 10^{-4}\,{\rm cm^{-3}}$).
description: 19 pages, 5 figures. Accepted for publication in ApJ. New affiliations to the author list are added
Linear independence in linear systems on elliptic curves
Creators: name: Brock, Bradley W.
name: Jordan, Bruce W.
name: Poonen, Bjorn
name: Scholl, Anthony J.
name: Wetherell, Joseph L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H52 (Primary) 14G35 (Secondary)

description: Let $E$ be an elliptic curve, with identity $O$, and let $C$ be a cyclic subgroup of odd order $N$, over an algebraically closed field $k$ with $\operatorname{char} k \nmid N$. For $P \in C$, let $s_P$ be a rational function with divisor $N \cdot P - N \cdot O$. We ask whether the $N$ functions $s_P$ are linearly independent. For generic $(E,C)$, we prove that the answer is yes. We bound the number of exceptional $(E,C)$ when $N$ is a prime by using the geometry of the universal generalized elliptic curve over $X_1(N)$. The problem can be recast in terms of sections of an arbitrary degree $N$ line bundle on $E$.
description: 10 pages
Top Quark Mass Measurement from Dilepton Events at CDF II
Creators: name: CDF Collaboration
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report a measurement of the top quark mass using events collected by the CDF II Detector from ppbar collisions at \sqrt{s} = 1.96 TeV at the Fermilab Tevatron. We calculate a likelihood function for the top mass in events that are consistent with ttbar->bbar l^- \nubar b l^+ νdecays. The likelihood is formed as the convolution of the leading-order matrix element and detector resolution functions. The joint likelihood is the product of likelihoods for each of 33 events collected in 340 pb^{-1} of integrated luminosity, yielding a top quark mass M_t = 165.2 +- 6.1 (stat.) +- 3.4(syst.) GeV/c^2. This first application of a matrix-element technique to ttbar->bbar l^- \nubar b l^+ νdecays gives the most precise single measurement of M_t in dilepton events. Combined with other CDF Run II measurements using dilepton events, we measure M_{t} = 167.9 +- 5.2 (stat.) +- 3.7 (syst.) GeV/c^2.
description: 7 pages, 2 figures, To be published in Phys. Rev. Lett. Replacement includes minor revisions made prior to acceptance by journal
Horizon Constraints and Black Hole Entropy
Creators: name: Carlip, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: To ask a question about a black hole in quantum gravity, one must restrict initial or boundary data to ensure that a black hole is actually present. For two-dimensional dilaton gravity, and probably a much wider class of theories, I show that the imposition of a spacelike ``stretched horizon'' constraint modifies the algebra of symmetries, inducing a central term. Standard conformal field theory techniques then fix the asymptotic density of states, reproducing the Bekenstein-Hawking entropy. The states responsible for black hole entropy can thus be viewed as ``would-be gauge'' states that become physical because the symmetries are altered.
description: 11 pages, LaTeX, 1 figure; v2: slightly expanded, minor corrections, new appendix on stretched horizon; v3: new comment on cutoff-dependence of central charge, minor rewording
Dynamics of Line-Driven Disk Winds in Active Galactic Nuclei II: Effects of Disk Radiation
Creators: name: Proga, D.
name: Kallman, T. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore consequences of a radiation driven disk wind model for mass outflows from active galactic nuclei (AGN). We performed axisymmetric time-dependent hydrodynamic calculations using the same computational technique as Proga, Stone and Kallman (2000). We test the robustness of radiation launching and acceleration of the wind for relatively unfavorable conditions. In particular, we take into account the central engine radiation as a source of ionizing photons but neglect its contribution to the radiation force. Additionally, we account for the attenuation of the X-ray radiation by computing the X-ray optical depth in the radial direction assuming that only electron scattering contributes to the opacity. Our new simulations confirm the main result from our previous work: the disk atmosphere can 'shield' itself from external X-rays so that the local disk radiation can launch gas off the disk photosphere. We also find that the local disk force suffices to accelerate the disk wind to high velocities in the radial direction. This is true provided the wind does not change significantly the geometry of the disk radiation by continuum scattering and absorption processes; we discuss plausibility of this requirement. Synthetic profiles of a typical resonance ultraviolet line predicted by our models are consistent with observations of broad absorption line (BAL) QSOs.
description: LaTeX, contains color figures, to appear in ApJ
Evidence for Quantized Displacement in Macroscopic Nanomechanical Oscillators
Creators: name: Gaidarzhy, Alexei
name: Zolfagharkhani, Guiti
name: Badzey, Robert L.
name: Mohanty, Pritiraj
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report the observation of discrete displacement of nanomechanical oscillators with gigahertz-range resonance frequencies at millikelvin temperatures. The oscillators are nanomachined single-crystal structures of silicon, designed to provide two distinct sets of coupled elements with very low and very high frequencies. With this novel design, femtometer-level displacement of the frequency-determining element is amplified into collective motion of the entire micron-sized structure. The observed discrete response possibly results from energy quantization at the onset of the quantum regime in these macroscopic nanomechanical oscillators.
description: 4 pages, two-column format. Related papers available at http://nano.bu.edu/
Additional file 4 of Poor infection prevention and control standards are associated with environmental contamination with carbapenemase-producing Enterobacterales and other multidrug-resistant bacteria in Swiss companion animal clinics
Creators: name: Schmidt, Janne S.
name: Kuster, Stefan P.
name: Nigg, Aurélien
name: Dazio, Valentina
name: Brilhante, Michael
name: Rohrbach, Helene
name: Bernasconi, Odette J.
name: Büdel, Thomas
name: Campos-Madueno, Edgar I.
name: Brawand, Stefanie Gobeli
name: Schuller, Simone
name: Endimiani, Andrea
name: Perreten, Vincent
name: Willi, Barbara
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 4. Detailed infection prevention and control scoring for Clinics/Practices A–G.
Instruments and mutual entropies in quantum information
Creators: name: Barchielli, Alberto
name: Lupieri, Giancarlo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: General quantum measurements are represented by instruments. In this paper the mathematical formalization is given of the idea that an instrument is a channel which accepts a quantum state as input and produces a probability and an a posteriori state as output. Then, by using mutual entropies on von Neumann algebras and the identification of instruments and channels, many old and new informational inequalities are obtained in a unified manner. Such inequalities involve various quantities which characterize the performances of the instrument under study; in particular, these inequalities include and generalize the famous Holevo's bound.
description: LaTeX, requires macros in mypreprint.sty, 16 pages. Submitted to Proceedings of the 25th Conference on "Quantum Probability and Related topics"
Collectively Driven Optical Nanoantennas
Creators: name: Choong, Jian Wen
name: Nefedkin, Nikita
name: Krasnok, Alex
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Optical nanoantennas, i.e., elements transforming localized light or waveguide modes into freely propagating fields and vice versa, are vital components for modern nanophotonics. Optical antennas have been demonstrated to cause the Dicke superradiance effect, i.e., collective spontaneous emission of quantum sources. However, the impact of coherent excitation on the antenna performance, such as directivity, efficiency, and Purcell effect, remains mostly unexplored. Herein, using full-wave numerical simulations backed by a quantum model, we unveil that coherent excitation allows controlling antenna multipoles, on-demand excitation of nonradiative states, enhanced directivity and improves antenna radiation efficiency. This collective excitation corresponds to the states with nonzero dipole moment in the quantum picture, where the quantum phase is well defined. The results of this work bring another degree of freedom - the collective phase of an ensemble of quantum emitters - to control optical nanoantennas and, as such, pave the way to the use of collective excitations for nanophotonic devices with superb performance. To make the discussion independent of the frequency range, we consider the all-dielectric design and use dimensionless units.
description: arXiv admin note: substantial text overlap with arXiv:1909.06010
2020 NDSA Agenda for Digital Stewardship
Creators: name: Altman, Micah
name: Cariani, Karen
name: Daigle, Bradley
name: Moffatt, Christie
name: Schaefer, Sibyl
name: Scott, Bethany
name: Work, Lauren
Publisher: name: arXiv
Year: 2020
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: The NDSA Agenda is a comprehensive overview of the state of global digital preservation. It casts its eye over current research trends, grants, projects, and various efforts spanning the preservation ecosystem. The agenda identifies successes and ongoing challenges in addition to providing some tangible recommendations to both researcher and practitioner alike. As both an overview and comprehensive dive into digital preservation issues, the audience ranges from high level to hands on experts. Funders can use this report as a signpost for the overall state of the profession.
Supplement 6 from Morphological characters in light of new molecular phylogenies: the caudal-fin skeleton of Ovalentaria
Creators: name: Thieme, Philipp
name: Schnell, Nalani K.
name: Parkinson, Kerryn
name: Moritz, Timo
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60301 Animal Systematics and Taxonomy
subject: 60310 Plant Systematics and Taxonomy

description: Character changes in reconstructed Phylogenetic hypothesis.pdf
title: Συνδυαστική αξιολόγηση πειραματικών μετρητών διατάξεων καταγραφής μεταβατικών φαινομένων ποιότητας ηλεκτρικής ισχύος
titleType: AlternativeTitle
Creators: name: Mellios, Panagiotis Τ.
Publisher: name: National Technological University of Athens
Year: 2014
Subjects: .
Ποιότητα ισχύος
Αρμονική
Ολικές αρμονικές παραμορφώσεις
Συντελεστές ισχύος
Μονοφασικά φορτία
Power quality
Harmonics
Total harmonic disortion
Power factor
Single phase loads

description: 180 σ.
description: Βασικός στόχος αυτής της εργασίας είναι η εκτίμηση της ποιότητας ισχύος πραγματοποιώντας συγκριτική αξιολόγηση μετρήσεων της ολικής αρμονικής παραμόρφωσης και του συντελεστή ισχύος για διάφορα μονοφασικά φορτία. Απώτερος στόχος της διπλωματικής εργασίας είναι η ανάπτυξη φυλλαδίου για τη διεξαγωγή εργαστηριακής άσκησης στον τομέα Ναυτικής Μηχανολογίας της σχολής Ναυπηγών Μηχανολόγων Μηχανικών. Στο 1ο Κεφάλαιο περιγράφεται η λειτουργία του αναλυτή ισχύος ΗΑ-1600 σχετικά με την αξιοποίησή του στη διεξαγωγή των εργαστηριακών μετρήσεων. Σε αυτό το κεφάλαιο αναλύονται οι λειτουργίες Power Meter, Waveform Graph και Harmonics. Στο 2ο Κεφάλαιο παρατίθενται οι πειραματικές μετρήσεις καθώς και η συγκριτική αξιολόγηση των αποτελεσμάτων. Οι συσκευές που μετρήθηκαν χωρίστηκαν σε κατηγορίες ανάλογα με τη λειτουργία τους. Στο 3ο Κεφάλαιο δίνεται το πρότυπο φυλλάδιο για τη διεξαγωγή εργαστηριακής άσκησης με θέμα την ποιότητα ισχύος. Στα Παραρτήματα Ι και ΙΙ που επισυνάπτονται στο τέλος βρίσκεται το πλήρες εγχειρίδιο χρήσης του ΗΑ-1600 στην ελληνική μετάφραση και αγγλική.
description: The main goal of this thesis is to assess the quality of power by conducting a comparison of measurements of the Total Harmonic Distortion and of the Power Factor for various single-phase loads. Another target is to develop a sheet of measurements for an experimental test to be conducted in the school of Naval Architects and Marine Engineers. The 1st Chapter describes the operation of the HA-1600 power analyser as it relates to its use in the experimental measurements. This chapter describes the following operations: Power Meter, Waveform Graph and Harmonics. In the 2nd Chapter are the results of the experimental measurements as well as the respective comparison. The devices that were used in the measurements were divided into categories according to the operation of each one. The 3rd Chapter consists of the measurement sheet for the experimental test with the aim to assess the quality of power. The full manual of operation of the HA-1600 power analyser is found in Appendices I and II at the end of the text, in the Greek and English languages.
Multifractal point processes and the spatial distribution of wildfires in French Mediterranean regions
Creators: name: Baïle, R.
name: Muzy, J. F.
name: Silvani, X.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We introduce a simple and wide class of multifractal spatial point patterns as Cox processes which intensity is multifractal, i.e., the class of Poisson processes with a stochastic intensity corresponding to a random multifractal measure. We then propose a maximum likelihood approach by means of a standard Expectation-Maximization procedure in order to estimate the distribution of these intensities at all scales. This provides, as validated on various numerical examples, a simple framework to estimate the scaling laws and therefore the multifractal properties for this class of spatial point processes. The wildfire distribution gathered in the Prométhée French Mediterranean wildfire database is investigated within this approach that notably allows us to compute the statistical moments associated with the spatial distribution of annual likelihood of fire event occurence. We show that for each order $q$, these moments display a well defined scaling behavior with a non-linear spectrum of scaling exponents $ζ_q$. From our study, it thus appears that the spatial distribution of the widlfire ignition annual risk can be described by a non-trivial, multifractal singularity spectrum and that this risk cannot be reduced to providing a number of events per $km^2$. Our analysis is confirmed by a direct spatial correlation estimation of the intensity logarithms whose the peculiar slowly decreasing shape corresponds to the hallmark of multifractal cascades. The multifractal features appear to be constant over time and similar over the three regions that are studied.
description: 41 pages, 14 figures
Supplement 4 from Morphological characters in light of new molecular phylogenies: the caudal-fin skeleton of Ovalentaria
Creators: name: Thieme, Philipp
name: Schnell, Nalani K.
name: Parkinson, Kerryn
name: Moritz, Timo
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60301 Animal Systematics and Taxonomy
subject: 60310 Plant Systematics and Taxonomy

description: Results ACE.pdf
Non-perturbative Heavy Quark Effective Theory: a test and its matching to QCD
Creators: name: Sommer, Rainer
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We give an introduction to the special problems encountered in a treatment of HQET beyond perturbation theory in the gauge coupling constant. In particular, we report on a recent test of HQET as an effective theory for QCD and discuss how HQET can be implemented on the lattice including the non-perturbative matching of the effective theory to QCD.
description: 12 pages, Latex
Additional file 1 of Scalability of future climate changes across Japan examined with large-ensemble simulations at + 1.5 K, +2 K, and + 4 K global warming levels
Creators: name: Nosaka, Masaya
name: Ishii, Masayoshi
name: Shiogama, Hideo
name: Mizuta, Ryo
name: Murata, Akihiko
name: Kawase, Hiroaki
name: Sasaki, Hidetaka
Publisher: name: figshare
Year: 2020
Subjects: subject: Atmospheric Sciences
subject: FOS: Earth and related environmental sciences

description: Additional file 1: Figure S1. The distribution of ΔSST in DJF and JJA averaged for all ensemble members. The first row (a, b, and c) shows the distributions in JJA and second row (d, e, and f) shows the distributions in DJF. The future changes of d1.5, d2, and d4 are presented in the left (a and d), center (b and e), and right (c and f) columns, respectively.
Determining the Hubble Constant without the Sound Horizon Scale: Measurements from CMB Lensing
Creators: name: Baxter, Eric J.
name: Sherwin, Blake D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Measurements of the Hubble constant, $H_0$, from the cosmic distance ladder are currently in tension with the value inferred from Planck observations of the CMB and other high redshift datasets if a flat $Λ$CDM cosmological model is assumed. One of the few promising theoretical resolutions of this tension is to invoke new physics that changes the sound horizon scale in the early universe; this can bring CMB and BAO constraints on $H_0$ into better agreement with local measurements. In this paper, we discuss how a measurement of the Hubble constant can be made from the CMB without using information from the sound horizon scale, $r_s$. In particular, we show how measurements of the CMB lensing power spectrum can be used to place interesting constraints on $H_0$ when combined with measurements of either supernovae or galaxy weak lensing, which constrain the matter density parameter. The constraints arise from the sensitivity of the CMB lensing power spectrum to the horizon scale at matter-radiation equality (in projection); this scale could have a different dependence on new physics than the sound horizon. From an analysis of current CMB lensing data from Planck and Pantheon supernovae with conservative external priors, we derive an $r_s$-independent constraint of $H_0 = 73.5\pm 5.3$ km/s/Mpc. Forecasts for future CMB surveys indicate that improving constraints beyond an error of $σ(H_0) = 3$ km/s/Mpc will be difficult with CMB lensing, although applying similar methods to the galaxy power spectrum may allow for further improvements.
description: 14 pages, 6 figures; minor revision to match version accepted by MNRAS
Additional file 3 of Trypanosome infections in naturally infected horses and donkeys of three active sleeping sickness foci in the south of Chad
Creators: name: Vourchakbé, Joël
name: Arnol Auvaker Z. Tiofack
name: Mpoame Mbida
name: Simo, Gustave
Publisher: name: figshare
Year: 2020
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3: Table S3. Concordance between RDT and PCR targeting T. b. gambiense.
Additional file 3 of Poor infection prevention and control standards are associated with environmental contamination with carbapenemase-producing Enterobacterales and other multidrug-resistant bacteria in Swiss companion animal clinics
Creators: name: Schmidt, Janne S.
name: Kuster, Stefan P.
name: Nigg, Aurélien
name: Dazio, Valentina
name: Brilhante, Michael
name: Rohrbach, Helene
name: Bernasconi, Odette J.
name: Büdel, Thomas
name: Campos-Madueno, Edgar I.
name: Brawand, Stefanie Gobeli
name: Schuller, Simone
name: Endimiani, Andrea
name: Perreten, Vincent
name: Willi, Barbara
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 3. Environmental sampling sites in Clinics A–C and Clinics/Practices D–G.
title: Βέλτιστος σχεδιασμός ποδός σε ευθείς οδόντες εξειλιγμένης για μέγιστη αντοχή σε κάμψη με χρήση καμπυλών Bezier
titleType: AlternativeTitle
Creators: name: Stathopoulos, Panagiotis
Publisher: name: National Technological University of Athens
Year: 2014
Subjects: Οδοντωτοί τροχοί
Τροχοί
Κάμψη
Εξειλιγμένη
Βέλτιστος σχεδιασμός
Bezier
Involute
Spur
Gears
Stress

description: In this thesis, a method of using a novel fillet design for spur gear teeth, in order to improve their strength and their loading capacity, is developed and presented. According to this method, the conventional trochoidal fillet profile and the segment of the root circle that corresponds to the half of the space between two successive teeth is replaced by a suitable Bézier curve. The shape of this curve is altered by changing two parameters in order to create a tooth profile with reduced first tensile principal stress at its root fillet. These teeth are first modelled geometrically and then their behaviour in bending is studied by assuming loading at their Highest Point of Single Tooth Contact (HPSTC). The maximum principal stress that appears at the root fillet of each model is calculated using Finite Element Analysis (FEA). After the analysis of all the models, an interpolation method is used, in order to define the combination of the parameters that corresponds to the optimum model. The next step is to investigate if interference between the tip of the mating gear and the resulting tooth geometry, exists. Finally, the results of this thesis are compared with similar efforts that have been made in the past on improving the strength of spur gears.
Additional file 2 of Poor infection prevention and control standards are associated with environmental contamination with carbapenemase-producing Enterobacterales and other multidrug-resistant bacteria in Swiss companion animal clinics
Creators: name: Schmidt, Janne S.
name: Kuster, Stefan P.
name: Nigg, Aurélien
name: Dazio, Valentina
name: Brilhante, Michael
name: Rohrbach, Helene
name: Bernasconi, Odette J.
name: Büdel, Thomas
name: Campos-Madueno, Edgar I.
name: Brawand, Stefanie Gobeli
name: Schuller, Simone
name: Endimiani, Andrea
name: Perreten, Vincent
name: Willi, Barbara
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 2. Criteria used for infection prevention and control (IPC) scoring in the seven companion animal institutions and as evaluated during one-day IPC audits. Each IPC topic was scored as follows: all criteria fulfilled = score 2; part of the criteria fulfilled = score 1; no criteria fulfilled = score 0. A score per IPC area and a total score was calculated. The results of the IPC scoring of the participating institutions are given in Table 3 and Additional file 4.
Gauss Coordinates vs Currents for the Yangian Doubles of the Classical Types
Creators: name: Liashyk, Andrii
name: Pakuliak, Stanislav Z.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider relations between Gauss coordinates of $T$-operators for the Yangian doubles of the classical types corresponding to the algebras $\mathfrak{g}$ of $A$, $B$, $C$ and $D$ series and the current generators of these algebras. These relations are important for the applications in the quantum integrable models related to $\mathfrak{g}$-invariant $R$-matrices and construction of the Bethe vectors in these models.
Future Precision Neutrino Oscillation Experiments and Theoretical Implications
Creators: name: Lindner, Manfred
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Future neutrino oscillation experiments will lead to precision measurements of neutrino mass splittings and mixings. The flavour structure of the lepton sector will therefore at some point become better known than that of the quark sector. This article discusses the potential of future oscillation experiments on the basis of detailed simulations with an emphasis on experiments which can be done in about ten years. In addition, some theoretical implications for neutrino mass models will be briefly discussed.
description: Talk given at Nobel Symposium 2004: Neutrino Physics, Haga Slott, Enkoping, Sweden, 19-24 Aug 2004
Improved Fallows in Eastern Zambia: History, Farmer Practice and Impacts
Creators: name: Kwesiga, Freddie
name: Franzel, Steven Charles
name: Mafongoya, Paramu
name: Ajayi, Olu Clifford
name: Phiri, Donald
name: Katanga, Roza
name: Kuntashula, Elias
name: Place, Frank
name: Chirwa, Teddy
name: Kwesiga, Freddie
name: Franzel, Steven Charles
name: Mafongoya, Paramu
name: Ajayi, Olu Clifford
name: Phiri, Donald
name: Katanga, Roza
name: Kuntashula, Elias
name: Place, Frank
name: Chirwa, Teddy
Publisher: name: Unknown
Year: 2005
Subjects: subject: Crop Production/Industries
subject: Zambia
subject: Fallows
subject: Crop yields
subject: Soil fertility

description: The decline in soil fertility in smallholder systems is a major factor inhibiting equitable development in much of sub-Saharan Africa. Some areas fallow in order to strength soil fertility for later planting, but as populations increase, demand follows. and continuous cropping becomes the norm and there is a reduction in yields. This case study summarizes the development of improved tree fallows by researchers and farmers in eastern Zambia to help solve the problem of poor soil fertility. Many farmers are finding that by using improved fallows, they can substitute relatively small amounts of land and labor for cash, which they would need to buy mineral fertilizer. The study has three phases: the historical background (phase 1); an assessment of problems, description of the technology, and how it was developed (phase 2); and how the improved fallows practices were disseminated and spread (phase 3). This paper will describe each phase, the goals, and results.
Product Differentiation and Market Segmentation in Applesauce: Using a Choice Experiment to Assess the Value of Organic, Local, and Nutrition Attributes
Creators: name: James, Jennifer S.
name: Rickard, Bradley J.
name: Rossman, William J.
name: James, Jennifer S.
name: Rickard, Bradley J.
name: Rossman, William J.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: applesauce
subject: choice experiment
subject: consumer demand
subject: fruit and vegetable markets
subject: local food
subject: multinomial logit model
subject: organic
subject: Pennsylvania
subject: willingness to pay

description: Recently, there has been much interest among horticultural producers concerning the marketing of organic and locally produced food. A consumer survey was administered that asked respondents to choose an applesauce product from a list of products differentiated by price, and by labels that described fat content, nutrition content, and whether the product was grown organically and/or locally. Our analysis indicates that consumers were willing to pay more for locally grown applesauce compared to applesauce that was labeled USDA Organic, Low Fat, or No Sugar Added. Furthermore, we find evidence that increased knowledge of agriculture decreases the willingness to pay for organic and locally grown applesauce.
МУЗЕЙНИНГ ДУРДОНА КОЛЛЕКЦИЯСИ
Creators: name: Равшанов, Ўктамали
name: Қобилов, Шохрухмирзо
Publisher: name: Zenodo
Year: 2024

description: Бухоро қадимдан ўзида турли сир-асрорларни яшириб келганлиги ва бой тарихга эгалиги билан тадқиқодчиларни жалб қилиб келмоқда. Мана 90 йилдан зиёд бўлдики, Бухоро музей-қўриқхонаси фондларида 130 мингдан зиёд тарихий ашёлар сақлаб келинмоқда. Булар орасида хорижий мамлакатлардан (асосан, савдо орқали) келтирилган буюмлар алоҳида қимматга ега. Музейнинг металл фондида бугунги кунда 30 дан зиёд Россиянинг турли шаҳарларида ишлаб чиқарилган самоварлар мавжуд.
Critical behavior of ferromagnets CrI3, CrBr3, CrGeTe3, and anti-ferromagnet FeCl2: a detailed first-principles study
Creators: name: Tiwari, Sabyasachi
name: Van de Put, Maarten L
name: Soree, Bart
name: Vandenberghe, William G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We calculate the Curie temperature of layered ferromagnets, chromium tri-iodide (CrI3), chromium tri-bromide (CrBr3), chromium germanium tri-telluride (CrGeTe3), and the Neel temperature of a layered anti-ferromagnet iron di-chloride (FeCl2), using first-principles density functional theory calculations and Monte-Carlo simulations. We develop a computational method to model the magnetic interactions in layered magnetic materials and calculate their critical temperature. We provide a unified method to obtain the magnetic exchange parameters (J) for an effective Heisenberg Hamiltonian from first-principles, taking into account both the magnetic ansiotropy as well as the out-of-plane interactions. We obtain the magnetic phase change behavior, in particular the critical temperature, from the susceptibility and the specific-heat, calculated using the three-dimensional Monte-Carlo (Metropolis) algorithm. The calculated Curie temperatures for ferromagnetic materials (CrI3, CrBr3 and CrGeTe3), match very well with experimental values. We show that the interlayer interaction in bulk CrI3 with R3 stacking is significantly stronger than the C2/m stacking, in line with experimental observations. We show that the strong interlayer interaction in R3 CrI results in a competition between the in-plane and the out-of-plane magnetic easy axis. Finally, we calculate the Neel temperature of FeCl2 to be 47 +- 8 K, and show that the magnetic phase transition in FeCl2 occurs in two steps with a high-temperature intralayer ferromagnetic phase transition, and a low-temperature interlayer anti-ferromagnetic phase transition.
Pancake vortices
Creators: name: Clem, John R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: I describe the magnetic-field and current-density distributions generated by two-dimensional (2D) pancake vortices in infinite, semi-infinite, and finite-thickness stacks of Josephson-decoupled superconducting layers. Arrays of such vortices have been used to model the magnetic structure in highly anisotropic layered cuprate high-temperature superconductors. I show how the electromagnetic forces between pancake vortices can be calculatated, and I briefly discuss the effects of interlayer Josephson coupling.
description: 16 pages, 4 figures, accepted in J. Supercond. for the Special Issue celebrating Michael Tinkham's 75th birthday, typos [notably in Eq. (67)] corrected
Valuations of ‘Sustainably Produced’ Labels on Beef, Tomato, and Apple Products
Creators: name: Tonsor, Glynn T.
name: Shupp, Robert S.
name: Tonsor, Glynn T.
name: Shupp, Robert S.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: consumer perceptions
subject: credence labeling
subject: production practices
subject: sustainable
subject: U.S. consumer demand
subject: willingness to pay

description: This study evaluates consumer perceptions of what “sustainably produced” food labels imply and estimates corresponding demand for products carrying these labels. Results suggest that the typical U.S. consumer is not willing to pay a positive premium for beef, tomatoes, or apple products labeled as “sustainably produced.” Demand is particularly sensitive to inferences consumers make regarding what a “sustainably produced” food label implies. Suggestions for future work and implications of standardizing the definition of sustainability are provided.
Tunable and Dual-broadband Giant Enhancement of SHG and THG in a Highly-engineered Graphene-Insulator-Graphene Metasurface
Creators: name: You, Jian Wei
name: Panoiu, Nicolae C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a novel scheme to dramatically enhance both the second- and third-harmonic generation in a graphene-insulator-graphene metasurface. The key underlying feature of our approach is the existence of a double-resonance phenomenon, namely the metasurface is designed to possess fundamental plasmon resonances at both the fundamental frequency and the higher harmonic. In particular, this dual resonant field enhancement at the two optical frequencies, combined with a favorable spatial overlap of the optical near-fields, lead to the increase of the generated higher harmonic by several orders of magnitude. Remarkably, we demonstrate that by tuning the Fermi energy of the graphene gratings the dual-resonance property can be locked-in over a broad spectral range of ~20 THz, and equally important, the enhanced nonlinear frequency generation process can be readily switched in the same device between the second and third harmonic. This new type of graphene metasurface could open up new avenues towards the development of novel ultra-compact and multi-frequency active photonic nanodevices.
description: 6 pages, 5 figures
Kondo effect in nanostructures
Creators: name: Pustilnik, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Kondo effect arises whenever a coupling to the Fermi gas induces transitions within the otherwise degenerate ground state multiplet of an interacting system. Both coupling to the Fermi gas and interactions are naturally present in any nanoscale transport experiment. At the same time, many nanostructures can easily be tuned to the vicinity of a degeneracy point. This is why the Kondo effect in its various forms often influences the low temperature transport in meso- and nanoscale systems. In this short review we discuss the basic physics of the Kondo effect and its manifestations in the low-temperature electronic transport through a single electron transistor.
title: Παθητικό σύστημα θέρμανσης χώρου με την χρήση υλικών αλλαγής φάσης
titleType: AlternativeTitle
Creators: name: Florou, Maria K.
Publisher: name: National Technological University of Athens
Year: 2011
Subjects: Υλικά αλλαγής φάσης
Παθητικό σύστημα θέρμανσης
Λανθάνουσα θερμότητα
Ιδιότητες υλικών αλλαγής φάσης
Θερμοδυναμική
Phase change material
Passive heating system
Latent heat
Capasities of phase change materials
Activities of phase change materials

description: 343 σ.
description: Πραγματοποιείται μια έρευνα γύρω από τα υλικά αλλαγής φάσης, τα χαρακτηριστικά και τις εφαρμογές τους. Στο πειραματικό μέρος θα εξετασθεί η θέρμανση χώρου ο οποίος βρίσκεται στην περιοχή της Αθήνας με γεωγραφικό πλάτος 37,97ο . Ο χώρος έχει εμβαδόν δαπέδου 10*10=100m2 και ύψος 3m.Η επιφάνεια του υαλοπίνακα είναι 15m2 και βρίσκεται στο νότιο τοίχο και ταυτόχρονα τοποθετώ στον βόρειο τοίχο στρώμα PCM. Το στρώμα αυτό απορροφά θερμότητα και μεταπίπτει στην υγρή φάση.Επιπλέον θα εξεταστούν κάποιες παραλλαγές του παραπάνω προβλήματος με σκοπό να καταλήξουμε σε κάποια συμπεράσματα. Η μελέτη θα πραγματοποιηθεί την 21 μέρα για τους μήνες Νοέμβριο , Δεκέμβριο, Ιανουάριο ,Φεβρουάριο και Μάρτιο . Ο χώρος που εξετάζουμε είναι ένα νοσοκομείο .Για την κάλυψη των ενεργειακών αναγκών του κτιρίου χρησιμοποιούνται και άλλα κοινά συμπληρωματικά μέσα με σκοπό την διατηρηση της θερμοκρασίας του χώρου στους 20οC . 7..
X(5) Critical-Point Structure in a Finite System
Creators: name: Leviatan, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: X(5) is a paradigm for the structure at the critical point of a particular first-order phase transition for which the intrinsic energy surface has two degenerate minima separated by a low barrier. For a finite system, we show that the dynamics at such a critical point can be described by an effective deformation determined by minimizing the energy surface after projection onto angular momentum zero, and combined with two-level mixing. Wave functions of a particular analytic form are used to derive estimates for energies and quadrupole rates at the critical point.
description: 14 pages, 1 figure, 2 tables, Phys. Rev. C in press
Slippage Effects of the Conservation Reserve Program: New Evidence from Satellite Imagery
Creators: name: Fleming, David A.
name: Fleming, David A.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Land Economics/Use
subject: CRP
subject: Land use change
subject: Satellite imagery
subject: Slippage effect

description: The Conservation Reserve Program (CRP) is the largest land retirement program ever operated in the US. Since its inception in 1985, many researchers have studied the impacts of this program; however, only a few have analyzed how the CRP affects surrounding non–enrolled parcels. In this research I examine how the CRP may affect the conversion of non–cropped land to agriculture, a phenomenon referred to as “slippage” in the literature, and specifically addressed by Wu (2000) and Roberts and Bucholtz (2005). Building on these earlier studies, I empirically model slippage using data derived from satellite imagery that provides information on land cover changes between 1992 and 2001. The study area consists of 1,053 counties located in the Northern Plains, Corn Belt and Lake States regions. Results support the existence of slippage effects from the CRP, but they are more conservative than the ones found by Wu (2000). The evidence of slippage provided here is important information for planners, given that whether and how the CRP affects land use decisions in surrounding areas is key information for implementing conservation efforts more efficiently.
B-type Supergiants in the SMC: Chemical compositions and comparison of static and unified models
Creators: name: Dufton, P. L.
name: Ryans, R. S. I.
name: Trundle, C.
name: Lennon, D. J.
name: Hubeny, I.
name: Lanz, T.
name: Prieto, C. Allende
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High-resolution UCLES/AAT spectra are presented for nine B-type supergiants in the SMC, chosen on the basis that they may show varying amounts of nuclear-synthetically processed material mixed to their surface. These spectra have been analysed using a new grid of approximately 12 000 non-LTE line blanketed {\sc tlusty} model atmospheres to estimate atmospheric parameters and chemical composition. The abundance estimates for O, Mg and Si are in excellent agreement with those deduced from other studies, whilst the low estimate for C may reflect the use of the \ion{C}{ii} doublet at 4267Å. The N estimates are approximately an order of magnitude greater than those found in unevolved B-type stars or \ion{H}{ii} regions but are consistent with the other estimates in AB-type supergiants. These results have been combined with results from a unified model atmosphere analysis of UVES/VLT spectra of B-type supergiants (Trundle et al. \cite{Tru04}) to discuss the evolutionary status of these objects. For two stars that are in common with those discussed by Trundle et al., we have undertaken a careful comparison in order to try to understand the relative importance of the different uncertainties present in such analyses, including observational errors and the use of static or unified models. We find that even for these relatively luminous supergiants, {\sc tlusty} models yield atmospheric parameters and chemical compositions similar to those deduced from the unified code {\sc fastwind}.
description: Submitted to astronomy and astrophysics
An alternative proof for Euler rotation theorem
Creators: name: Joseph, Toby
Publisher: name: arXiv
Year: 2020
Subjects: subject: History and Overview (math.HO)
subject: Classical Physics (physics.class-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Euler's rotation theorem states that any reconfiguration of a rigid body with one of its points fixed is equivalent to a single rotation about an axis passing through the fixed point. The theorem forms the basis for Chasles' theorem which states that it is always possible to represent the general displacement of a rigid body by a translation and a rotation about an axis. Though there are many ways to achieve this, the direction of the rotation axis and angle of rotation are independent of the translation vector. The theorem is important in the study of rigid body dynamics. There are various proofs available for these theorems, both geometric and algebraic. A novel geometric proof of Euler rotation theorem is presented here which makes use of two successive rotations about two mutually perpendicular axis to go from one configuration of the rigid body to the other with one of its points fixed.
description: 11 pages, 6 figures. The Mathematical Intelligencer (2020)
Additional file 2 of Trypanosome infections in naturally infected horses and donkeys of three active sleeping sickness foci in the south of Chad
Creators: name: Vourchakbé, Joël
name: Arnol Auvaker Z. Tiofack
name: Mpoame Mbida
name: Simo, Gustave
Publisher: name: figshare
Year: 2020
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2: Table S2. Concordance between RDT and PCR targeting all trypanosome species.
Using Cellulosic Ethanol to ‘Go Green’: What Price for Carbon?
Creators: name: Miranowski, John A.
name: Rosburg, Alicia
name: Miranowski, John A.
name: Rosburg, Alicia
Publisher: name: Unknown
Year: 2010
Subjects: Environmental Economics and Policy
Resource /Energy Economics and Policy

description: The revised Renewable Fuels Standard (RFS2) mandates that cellulosic biofuels be part of the liquid transportation fuel mix and contribute to reducing our carbon footprint. Unfortunately, since no commercial cellulosic biorefinery exists and cellulosic biomass production is typically smaller scale than conventional crop production, limited knowledge exists of the actual costs of producing cellulosic biomass and converting it to cellulosic ethanol. Understanding of the implications of RFS2 requires a better understanding of the economics of producing cellulosic ethanol. We use the Biofuel Breakeven model (BIOBREAK), a simple long run breakeven model that represents the feedstock supply system and biofuel refining process, along with estimates of the potential reduction in carbon emissions from biofuels relative to conventional fuels, to derive the implicit carbon price (or carbon credit) needed to sustain a biomass market and cellulosic ethanol industry. We evaluate BIOBREAK under different oil prices, the RFS2 mandate, and with and without other biofuel incentives.