cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Field electron emission mechanism in an ultrathin multilayer planar cold cathode
Creators: name: Wang, R. Z.
name: Yan, H.
name: Wang, B.
name: Zhang, X. W.
name: Hou, X. Y.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Field electron emission from an ultrathin multilayer planar cold cathode (UMPC) including quantum well structure has been both experimentally and theoretically investigated. We found that only tuning the energy levels of UMPC the field electron emission (FE) characteristic can be evidently improved, which is unexplained by the conventional FE mechanism. Field electron emission mechanism dependent on the quantum structure effect, which supplies a favorable location of electron emission and enhances tunneling ability, has been presented to expound the notable amelioration. An approximate formula brought forward can predict the quantum FE enhancement, which the theoretical prediction is close to the experimental result.
description: 7 pages, 4 figures
EURL Lm Guidance Document to evaluate the competence of laboratories implementing challenge tests and durability studies related to Listeria monocytogenes in ready-to-eat foods
Creators: name: Bergis, Hélène
name: LOMBARD, Bertrand
name: Polet, Marie
name: Andersen, Jens Kirk
name: Hickey, Bernadette
name: Pomilio, Francesco
name: Skjerdal, Taran
name: Mackiw, Elzbieta
name: in't Veld, Paul
Publisher: name: Zenodo
Year: 2018
Subjects: EURL Lm
Listeria monocytogenes
Ready-to-eat foods
guidance document
guide
food microbiology
laboratory competence
shelf-life study
durability study
challenge test
growth potential
maximum growth rate

description: This guidance document has been prepared by the European Union Reference Laboratory for Listeria monocytogenes (EURL Lm), in collaboration with representatives of 7 National Reference Laboratories for Listeria monocytogenes (NRLs Lm).This is the second version of this guidance document, replacing the first version of February 2012. This 2nd version takes into account the 2014 version of the EURL Lm Technical guidance document for conducting shelf-life studies on Listeria monocytogenes in ready-to-eat foods, as well as experiences gained from the evaluation of shelf-life studies.This document has been approved by the EC Standing Committee on Plants, Animals, Food and Feed (PAFF Committee) at its meeting of 3 May 2018.
Van der Waals dephasing for Dicke subradiance in cold atomic clouds
Creators: name: Cipris, Ana
name: Bachelard, Romain
name: Kaiser, Robin
name: Guerin, William
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate numerically the role of near-field dipole-dipole interactions on the late emission dynamics of large disordered cold atomic samples driven by a weak field. Previous experimental and numerical studies of subradiance in macroscopic samples have focused on low-density samples of pure two-level atoms, without internal structure, which corresponds to a scalar representation of the light. The cooperative nature of the late emission of light is then governed by the resonant optical depth. Here, by considering the vectorial nature of the light, we show the detrimental role of the near-field terms on cooperativity in higher-density samples. The observed reduction in the subradiant lifetimes is interpreted as a signature of the inhomogeneous broadening due to the near-field contributions, in analogy with the Van der Waals dephasing phenomenon for superradiance.
A Detailed Study on the Equal Arrival Time Surface Effect in Gamma-Ray Burst Afterglows
Creators: name: Huang, Y. F.
name: Lu, Y.
name: Wong, A. Y. L.
name: Cheng, K. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Due to the relativistic motion of gamma-ray burst remnant and its deceleration in the circumburst medium, the equal arrival time surfaces at any moment are not spherical, but should be distorted ellipsoids. This will leave some imprints in the afterglows. In this article, we study the effect of equal arrival time surfaces numerically under various conditions, i.e., for isotropic fireballs, collimated jets, density jump conditions, and energy injection events. For each condition, direct comparison between the two instances when the effect is and is not included, is presented. For isotropic fireballs and jets viewed on axis, the effect slightly hardens the spectra and postpones the peak time of afterglows, but does not change the shapes of the spectra and light curves significantly. In the cases when a density jump or an energy injection is involved, the effect smears the variability of the afterglows markedly.
description: Accepted for publication in: Chin. J. Astron. Astrophys., 15 pages, 8 embedded eps figures
An Explanation for 13 consecutive days activities of Mrk 421
Creators: name: Zheng, Y. G.
name: Yang, C. Y.
name: Kang, Shi-Ju
name: Bai, J. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It is surprising to find a fact for migration in the peak positions of synchrotron spectra energy distribution component during in the activity epochs of Mrk 421, accompanying with an orphan flaring at the X-ray and GeV-TeV $γ$-ray bands. A geometric interpretation and standard shock or stochastic acceleration models of blazar emission have difficulty reproducing these observed behaviours. The present paper introduces a linear acceleration by integrating the reconnection electric field into the particle transport model for the observed behaviours of Mrk 421. We note that the strong evidence for evolution of multi-wavelength spectral energy distribution characteristic by shifting the peak frequency, accompanying with an orphan flaring at the X-ray and GeV-TeV $γ$-ray bands provides an important electrostatic acceleration diagnostic in blazar jet. Assuming suitable model parameters, we apply the results of the simulation to the 13-day flaring event in 2010 March of Mrk 421, concentrating on the evolution of multi-wavelength spectral energy distribution characteristic by shifting the peak frequency. It is clear that the ratio of the electric field and magnetic field strength plays an important role in temporal evolution of the peak frequency of synchrotron spectral energy distribution component. We suggest the electrostatic acceleration responsible for the evolution of multi-wavelength spectral energy distribution characteristic by shifting the peak frequency is reasonable. Based on the model results, we issue that the peak frequency of the synchrotron spectral energy distribution component may denote a temporary characteristic of blazars, rather than a permanent one.
description: Accepted for publication in RAA. 18 pages, 3 figures, 2 tables
Late time tails of the massive vector field in a black hole background
Creators: name: Konoplya, R. A.
name: Molina, C.
name: Zhidenko, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the late-time behavior of the massive vector field in the background of the Schwarzschild and Schwarzschild-de Sitter black holes. For Schwarzschild black hole, at intermediately late times the massive vector field is represented by three functions with different decay law $Ψ_{0} \sim t^{-(\ell + 3/2)} \sin{m t}$, $Ψ_{1} \sim t^{-(\ell + 5/2)} \sin{m t}$, $Ψ_{2} \sim t^{-(\ell + 1/2)} \sin{m t}$, while at asymptotically late times the decay law $Ψ\sim t^{-5/6} \sin{(m t)}$ is universal, and does not depend on the multipole number $\ell$. Together with previous study of massive scalar and Dirac fields where the same asymptotically late-time decay law was found, it means, that the asymptotically late-time decay law $\sim t^{-5/6} \sin{(m t)}$ \emph{does not depend} also \emph{on the spin} of the field under consideration. For Schwarzschild-de Sitter black holes it is observed two different regimes in the late-time decay of perturbations: non-oscillatory exponential damping for small values of $m$ and oscillatory quasinormal mode decay for high enough $m$. Numerical and analytical results are found for these quasinormal frequencies.
description: one author and new material are added
Structure of $^{30}$Mg explored via in-beam $γ$-ray spectroscopy
Creators: name: Kitamura, N.
name: Wimmer, K.
name: Shimizu, N.
name: Bader, V. M.
name: Bancroft, C.
name: Barofsky, D.
name: Baugher, T.
name: Bazin, D.
name: Berryman, J. S.
name: Bildstein, V.
name: Gade, A.
name: Lunderberg, N. Imai T. Kröll C. Langer J. Lloyd E.
name: Redpath, G. Perdikakis F. Recchia T.
name: Saenz, S.
name: Smalley, D.
name: Stroberg, S. R.
name: Tostevin, J. A.
name: Tsunoda, N.
name: Utsuno, Y.
name: Weisshaar, D.
name: Westerberg, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Background: In the "island of inversion", ground states of neutron-rich $sd$-shell nuclei exhibit strong admixtures of intruder configurations from the $fp$ shell. The nucleus $^{30}$Mg, located at the boundary of the island of inversion, serves as a cornerstone to track the structural evolution as one approaches this region. Purpose: Spin-parity assignments for excited states in $^{30}$Mg, especially negative-parity levels, have yet to be established. In the present work, the nuclear structure of $^{30}$Mg was investigated by in-beam $γ$-ray spectroscopy mainly focusing on firm spin-parity determinations. Method: High-intensity rare-isotope beams of $^{31}$Mg, $^{32}$Mg, $^{34}$Si, and $^{35}$P bombarded a Be target to induce nucleon removal reactions populating states in $^{30}$Mg. $γ$ rays were detected by the state-of-the-art $γ$-ray tracking array GRETINA. For the direct one-neutron removal reaction, final-state exclusive cross sections and parallel momentum distributions were deduced. Multi-nucleon removal reactions from different projectiles were exploited to gain complementary information. Results: With the aid of the parallel momentum distributions, an updated level scheme with revised spin-parity assignments was constructed. Spectroscopic factors associated with each state were also deduced. Conclusions: Results were confronted with large-scale shell-model calculations using two different effective interactions, showing excellent agreement with the present level scheme. However, a marked difference in the spectroscopic factors indicates that the full delineation of the transition into the island of inversion remains a challenge for theoretical models.
EURL Lm Guidance Document to evaluate the competence of laboratories implementing challenge tests and durability studies related to Listeria monocytogenes in ready-to-eat foods
Creators: name: Bergis, Hélène
name: Bonanno, Ludivine
name: Asséré, Adrien
name: Polet, Marie
name: Kramarenko, Toomas
name: Soo, Kristjan
name: Pomilio, Francesco
name: Iannetti, Luigi
name: Centorotola, Gabriella
name: Skjerdal, Taran
name: Heslin, Regina
name: in't Veld, Paul
Publisher: name: Zenodo
Year: 2023
Subjects: subject: EURL Lm
subject: Listeria monocytogenes
subject: Ready-to-eat foods
subject: guidance document
subject: guide
subject: food microbiology
subject: laboratory competence
subject: shelf-life study
subject: durability study
subject: challenge test
subject: growth potential
subject: maximum growth rate
subject: https://www.cabi.org/cabithesaurus/mtwdk.exe?k=default&l=60&w=201992&s=5&t=2

description: This guidance document has been prepared by the European Union Reference Laboratory for Listeria monocytogenes (EURL Lm), in collaboration with a working group of six representatives of National Reference Laboratories for Listeria monocytogenes (NRLs Lm). This is the third version of the EURL Lm guidance document to evaluate the competence of laboratories implementing challenge tests and durability studies related to Listeria monocytogenes in ready-to-eat foods. It replaces version 2 of May 2018. The purpose of this revision is to ensure consistency with version 4 of the EURL Lm Technical guidance document on challenge tests and durability studies for assessing shelf-life studies of ready-to-eat foods related to Listeria monocytogenes (Lm), as well as experiences gained from the evaluation of shelf-life studies. This document was endorsed by the section Biological Safety of the Food Chain of the EC Standing Committee on Plants, Animals, Food and Feed (PAFF Committee) at its meeting of 10 February 2023.
description: Funding by: EUROPEAN HEALTH AND DIGITAL EXECUTIVE AGENCY (HADEA) - HaDEA.A – Health and Food Directorate A2.002 - EU4Health/SMP Food Unit Project: [EURLs-EURCs/2021-2022/SI2.870826] Document dispatch by DG SANTE G4 via https://food.ec.europa.eu/document/download/f7592428-9712-40f8-963a-f51a8a39823c_en?filename=biosafety_fh_mc_guidance-comp-labs.pdf
Editorial
Creators: name: Eitel, Bernhard
Publisher: name: Ruperto Carola
Year: 2021

description: LIEBE LESERINNEN UND LESER DER RUPERTO CAROLA, „Die Freunde nennen sich aufrichtig, die Feinde sind es.“ Dieser Satz von Arthur Schopenhauer zeigt im Vexierspiegel auf ein Begriffspaar von höchster und mit emotionaler Kraft geladener Vielschichtigkeit. Individuen sind sich genauso wie Gruppen und Nationen in Freundschaft oder auch in Feindschaft verbunden. In der Natur leben grundverschiedene Organismen friedlich und zu beiderseitigem Nutzen zusammen – oder zerstören sich gegenseitig. Im menschlichen Körper können Zellen bösartig entarten und zum Feind des Menschen werden – sie können wiederum selbst von ihnen feindlich gesonnenen Killerzellen angegriffen werden, die dann zur Heilung beitragen. Sowohl im zwischenmenschlichen als auch im medizinischen und biologischen Bereich können sich die Beziehungsgefüge ändern, und nicht immer weist Freundschaft nur positive Aspekte auf und wirkt Feindschaft nur negativ. FREUND & FEIND – mit den unterschiedlichen Facetten dieses Themas befasst sich die 17. Ausgabe unseres Forschungsmagazins RUPERTO CAROLA, in der Wissenschaftlerinnen und Wissenschaftler der Universität Heidelberg ihre aktuelle Forschung vorstellen. Dabei geht es unter anderem um die Frage, wie im menschlichen Körper lebenswichtige Proteine vom Freund zum Feind werden können, um die unterschiedlichen Phasen der deutsch-amerikanischen Freundschaft oder darum, wie in musikalischen Kompositionen Feindschaft ihren Ausdruck finden kann. Ich danke allen Kolleginnen und Kollegen für ihre Beiträge, die ein Ausdruck lebendiger Forschung an unserer Universität sind, und wünsche allen unseren Leserinnen und Lesern eine erkenntnisreiche und gleichzeitig unterhaltsame Lektüre. Prof. Dr. Dr. h.c. Bernhard Eitel Rektor der Universität Heidelberg
description: Ruperto Carola, Nr. 17 (2021): Freund & Feind
A behavioural genetic analysis of attachment styles in adult twins
Creators: name: Brussoni, Mariana Jose
Publisher: name: University of British Columbia
Year: 2009

description: total of 219 twin pairs (115 monozygotic, 75% female) aged 16 to 79 years completed the Relationship Scales Questionnaire (RSQ) and the Relationship Questionnaire (RQ). Data analyses estimated the heritability of Bartholomew's four adult attachment styles, the self- and other-model dimensions, and examined gender differences in genetic and environmental influences. The results showed an additive genetic and a non-shared environmental component for the secure, fearful, and preoccupied adult attachment styles whereas the dismissing style was characterized by shared and non-shared environmental components. No evidence of sex-specific genetic or shared environmental effects was found. These results shed some light on the controversy between temperament theorists who emphasize genetic influences and attachment theorists who emphasize environmental influences on attachment.
Logarithmic extensions of minimal models: characters and modular transformations
Creators: name: Feigin, BL
name: Gainutdinov, AM
name: Semikhatov, AM
name: Tipunin, IYu
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study logarithmic conformal field models that extend the (p,q) Virasoro minimal models. For coprime positive integers $p$ and $q$, the model is defined as the kernel of the two minimal-model screening operators. We identify the field content, construct the W-algebra W(p,q) that is the model symmetry (the maximal local algebra in the kernel), describe its irreducible modules, and find their characters. We then derive the SL(2,Z) representation on the space of torus amplitudes and study its properties. From the action of the screenings, we also identify the quantum group that is Kazhdan--Lusztig-dual to the logarithmic model.
description: 43pp., AMSLaTeX++. V3: Some explanatory comments added, notational inaccuracies corrected, references added
COVID-19 European hospital surveillance: I-MOVE-COVID-19 draft generic protocol
Creators: name: Ladbury, Georgia
name: Rose, Angela MC
name: Kissling, Esther
name: Valenciano, Marta
Publisher: name: Zenodo
Year: 2021
Subjects: Surveillance
COVID-19
SARS-CoV-2
hospitalised patients
I-MOVE-COVID-19

description: This document presents the core European protocol for the hospital-based surveillance component of I-MOVE-COVID-19 for 2020, outlining the agreed methods for collecting COVID-19 and SARS-CoV2 data during this pandemic.
description: This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 101003673
Physical Properties and Scaling Relations of Molecular Clouds: the Impact of Star Formation
Creators: name: Grisdale, Kearn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using hydrodynamical simulations of a Milky Way-like galaxy, reaching 4.6 pc resolution, we study how the choice of star formation criteria impacts both galactic and Giant Molecular Clouds (GMC) scales. We find that using a turbulent, self-gravitating star formation criteria leads to an increase in the fraction of gas with densities between 10 and 10$^4$ cm$^{-3}$ when compared with a simulation using a molecular star formation method, despite both having nearly identical gaseous and stellar morphologies. Furthermore, we find that the site of star formation is effected with the the former tending to only produce stars in regions of very high density ($\gt 10$ cm$^{-3}$) gas while the latter forms stars along the entire length of its spiral arms. The properties of GMCs are impacted by the choice of star formation criteria with the former method producing larger clouds. Despite the differences we find that the relationships between clouds properties, such as the Larson relations, remain unaffected. Finally, the scatter in the measured star formation efficiency per free-fall time of GMCs remains present with both methods and is thus set by other factors.
description: 18 Pages, 15 Figures, Accepted for publication in Monthly Notices of the Royal Astronomical Society
Additional file 1 of Prevalence of abdominal obesity and associated risk factors among women civil servants in Addis Ababa, Ethiopia, 2021: an institution-based study
Creators: name: Bereka, Solomon Gebretsadik
name: Demisse, Ayele Worku
name: Getahun, Genanew Kassie
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1.
Glimm's Method for Relativistic Hydrodynamics
Creators: name: Cannizzo, J. K.
name: Gehrels, N.
name: Vishniac, E. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of standard one-dimensional test problems in relativistic hydrodynamics using Glimm's (random choice) method, and compare them to results obtained using finite differencing methods. For problems containing profiles with sharp edges, such as shocks, we find Glimm's method yields global errors ~1-3 orders of magnitude smaller than the traditional techniques. The strongest differences are seen for problems in which a shear field is superposed. For smooth flows, Glimm's method is inferior to standard methods. The location of specific features can be off by up to two grid points with respect to an exact solution in Glimm's method, and furthermore curved states are not modeled optimally since the method idealizes solutions as being composed of piecewise constant states. Thus although Glimm's method is superior at correctly resolving sharp features, especially in the presence of shear, for realistic applications in which one typically finds smooth flows plus strong gradients or discontinuities, standard FD methods yield smaller global errors. Glimm's method may prove useful in certain applications such as GRB afterglow shock propagation into a uniform medium.
description: 42 pages, 18 figures - to appear in the Astrophysical Journal, June 1, 2008, v. 679
Evolution of the Earth's Atmosphere during Late Veneer Accretion
Creators: name: Sinclair, Catriona A.
name: Wyatt, Mark C.
name: Morbidelli, Alessandro
name: Nesvorny, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent advances in our understanding of the dynamical history of the Solar system have altered the inferred bombardment history of the Earth during accretion of the Late Veneer, after the Moon-forming impact. We investigate how the bombardment by planetesimals left-over from the terrestrial planet region after terrestrial planet formation, as well as asteroids and comets, affects the evolution of Earth's early atmosphere. We develop a new statistical code of stochastic bombardment for atmosphere evolution, combining prescriptions for atmosphere loss and volatile delivery derived from hydrodynamic simulations and theory with results from dynamical modelling of realistic populations of impactors. We find that for an initially Earth-like atmosphere impacts cause moderate atmospheric erosion with stochastic delivery of large asteroids giving substantial growth ($\times 10$) in a few $\%$ of cases. The exact change in atmosphere mass is inherently stochastic and dependent on the dynamics of the left-over planetesimals. We also consider the dependence on unknowns including the impactor volatile content, finding that the atmosphere is typically completely stripped by especially dry left-over planetesimals ($<0.02 ~ \%$ volatiles). Remarkably, for a wide range of initial atmosphere masses and compositions, the atmosphere converges towards similar final masses and compositions, i.e. initially low mass atmospheres grow whereas massive atmospheres deplete. While the final properties are sensitive to the assumed impactor properties, the resulting atmosphere mass is close to that of current Earth. The exception to this is that a large initial atmosphere cannot be eroded to the current mass unless the atmosphere was initially primordial in composition.
description: 30 pages, accepted for publication in MNRAS
Stability of Toroidal Magnetic Fields in Rotating Stellar Radiation Zones
Creators: name: Kitchatinov, L. L.
name: Ruediger, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The questions of how strong magnetic fields can be stored in rotating stellar radiative zones without being subjected to pinch-type instabilities and how much radial mixing is produced if the fields are unstable are addressed. Linear equations are derived for weak disturbances of magnetic and velocity fields which are global in horizontal dimensions but short--scaled in radius. The equations are solved to evaluate the stability of toroidal field patterns with one or two latitudinal belts under the influence of a rigid basic rotation. Hydrodynamic stability of latitudinal differential rotation is also considered. The magnetic instability is essentially three--dimensional. It does not exist in a 2D formulation with strictly horizontal disturbances on decoupled spherical shells. Only stable (magnetically modified) r-modes are found in this case. The instability recovers in 3D. The most rapidly growing modes for the Sun have radial scales smaller than 1 Mm. The finite thermal conductivity makes a strong destabilizing effect. The marginal field strength for the onset of the instability in the upper part of the solar radiative zone is about 600 G. The toroidal field can only slightly exceed this critical value for otherwise the radial mixing produced by the instability would be too strong to be compatible with the observed lithium abundance. Also the threshold for hydrodynamic instability of differential rotation which exists in 2D is lowered in 3D. When radial displacements are included, the value of 28% for critical shear is reduced to 21%.
description: 7 pages, 9 figures
A two-fluid analysis of waves in a warm ion-electron plasma
Creators: name: De Jonghe, Jordi
name: Keppens, Rony
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Following recent work, we discuss waves in a warm ideal two-fluid plasma consisting of electrons and ions starting from a completely general, ideal two-fluid dispersion relation. The plasma is characterised by five variables: the electron and ion magnetisations, the squared electron and ion sound speeds, and a parameter describing the angle between the propagation vector and the magnetic field. The dispersion relation describes 6 pairs of waves which we label S, A, F, M, O, and X. Varying the angle, it is argued that parallel and perpendicular propagation (with respect to the magnetic field) exhibit unique behaviour. This behaviour is characterised by the crossing of wave modes which is prohibited at oblique angles. We identify up to 6 different parameter regimes where a varying number of exact mode crossings in the special parallel or perpendicular orientations can occur. We point out how any ion-electron plasma has a critical magnetisation (or electron cyclotron frequency) at which the cutoff ordering changes, leading to different crossing behaviour. These are relevant for exotic plasma conditions found in pulsar and magnetar environments. Our discussion is fully consistent with ideal relativistic MHD and contains light waves. Additionally, exploiting the general nature of the dispersion relation, phase and group speed diagrams can be computed at arbitrary wavelengths for any parameter regime. Finally, we recover earlier approximate dispersion relations that focus on low-frequency limits and make direct correspondences with some selected kinetic theory results.
description: 20 pages, 7 figures, 7 tables. The following article has been accepted by Physics of Plasmas. After it is published, it will be found at https://publishing.aip.org/resources/librarians/products/journals/
Recent results from Yakutsk experiment: development of EAS, energy spectrum and primary particle mass composition in the energy region of 10^15-10^19 eV
Creators: name: Knurenko, S. P.
name: Ivanov, A. A.
name: Pravdin, M. I.
name: Sabourov, A. V.
name: Sleptsov, I. Ye.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Experimental data obtained at the Yakutsk array after the modernization in 1993 are analyzed. The characteristics of EAS longitudinal and radial development found from the charged particle flux and EAS Cherenkov light registered at the Yakutsk complex array are presented. The energy spectrum of EAS obtained from Cherenkov light and an estimate of the PCR mass composition are presented.
description: 10 pages, 11 figures. Invited talk on XIV ISVHECRI; to be published in Nucl. Phys. B (Proc. Supply)
Beyond the brain: towards a mathematical modeling of emotions
Creators: name: Ambrosio, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Optimization and Control (math.OC)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: Emotions are a central key for understanding human beings and of fundamental importance regarding their impact in human and animal behaviors. They have been for a long time a subject of study for various scholars including in particular philosophers and mystics. In modern science, the emotional phenomenon has attracted for a few decades an increasing number of studies, notably in the fields of Psychology, Psychiatry, Neuroscience and Biochemistry. However, since our perception of emotions is not, so far, directly detectable nor recordable by our measure instruments, Physics and Mathematics have not been so far used academically to provide a precise description of the phenomenon of feeling an emotion. Relying upon the works of O. Elahi and on the hypothesis that the human soul and its psyche may manifest in ourselves (in both conscious and unconscious manner) in an analog way as electromagnetic waves, we propose here a few mathematical descriptions consistent with the human personal experience, of the feeling and cognition of emotions. As far as we know, such a mathematical description has never been provided before. It allows a quantitative (intensity) and qualitative (nature of feelings/frequency) of the emotional phenomenon which provides a novel scientific approach of the nature of the mind, complementary to the on going research of physiological manifestation of emotions. We anticipate such an approach and the associated mathematical modeling to become an important tool to describe emotions and their subsequent behavior. In complement of the modeling of oscillations and brain dynamics, it provides a fruitful direction of research with potentially broad and deep impacts in both applied mathematics, physics, cognitive and behavioral sciences.
Additional file 1 of Partnership among hospitals to reduce healthcare associated infections: a quasi-experimental study in Brazilian ICUs
Creators: name: de Melo, Ladjane Santos Wolmer
name: de Abreu, Maria Verônica Monteiro
name: de Oliveira Santos, Bernuarda Roberta
name: das Graças Washington Casimiro Carreteiro, Maria
name: de Souza, Maria Fernanda Aparecida Moura
name: de Albuquerque, Maria Carolina Andrade Lins
name: de Lacerda Vidal, Claudia Fernanda
name: Lacerda, Heloisa Ramos
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Supplementary Table 1. CVC and mechanical ventilation utilization rates and adherence to the preventive measures bundles. Supplementary Table 2. UC utilization rate and adherence to the preventive measures bundles.
Resonant Tunneling Magneto Resistance in Coupled Quantum Wells
Creators: name: Ertler, Christian
name: Fabian, Jaroslav
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A three barrier resonant tunneling structure in which the two quantum wells are formed by a dilute magnetic semiconductor material (ZnMnSe) with a giant Zeeman splitting of the conduction band is theoretically investigated. Self-consistent numerical simulations of the structure predict giant magnetocurrent in the resonant bias regime as well as significant current spin polarization for a considerable range of applied biases.
description: 4 pages, 4 figures
EFFECTS OF SILENCING CYC2-LIKE GENES ON FLORAL DEVELOPMENT IN SOLANUM LYCOPERSICUM L. AND NICOTIANA OBTUSIFOLIA M. MARTENS & GALEOTTI (SOLANACEAE)
Creators: name: Kim, Joonseog
Publisher: name: VCU Libraries
Year: 2017

description: VCU Theses and Dissertations
Analytical approximations to the spectra of quark-antiquark potentials
Creators: name: Amore, Paolo
name: De Pace, Arturo
name: Lopez, Jorge
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A method, recently devised to obtain analytical approximations to certain classes of integrals, is used in combination with the WKB expansion to derive accurate analytical expressions for the spectrum of quantum potentials. The accuracy of our results is verified by comparing them both with the literature on the subject and with the numerical results obtained with a Fortran code. As an application of the method that we propose, we consider the meson spectroscopy with various phenomenological potentials.
description: 12 pages, 4 figures, 1 table
Spatially-Variant CNN-based Point Spread Function Estimation for Blind Deconvolution and Depth Estimation in Optical Microscopy
Creators: name: Shajkofci, Adrian
name: Liebling, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Optical microscopy is an essential tool in biology and medicine. Imaging thin, yet non-flat objects in a single shot (without relying on more sophisticated sectioning setups) remains challenging as the shallow depth of field that comes with high-resolution microscopes leads to unsharp image regions and makes depth localization and quantitative image interpretation difficult. Here, we present a method that improves the resolution of light microscopy images of such objects by locally estimating image distortion while jointly estimating object distance to the focal plane. Specifically, we estimate the parameters of a spatially-variant Point-Spread function (PSF) model using a Convolutional Neural Network (CNN), which does not require instrument- or object-specific calibration. Our method recovers PSF parameters from the image itself with up to a squared Pearson correlation coefficient of 0.99 in ideal conditions, while remaining robust to object rotation, illumination variations, or photon noise. When the recovered PSFs are used with a spatially-variant and regularized Richardson-Lucy deconvolution algorithm, we observed up to 2.1 dB better signal-to-noise ratio compared to other blind deconvolution techniques. Following microscope-specific calibration, we further demonstrate that the recovered PSF model parameters permit estimating surface depth with a precision of 2 micrometers and over an extended range when using engineered PSFs. Our method opens up multiple possibilities for enhancing images of non-flat objects with minimal need for a priori knowledge about the optical setup.
description: Preprint
Branch-cut Singularities in Thermodynamics of Fermi Liquid Systems
Creators: name: Shekhter, Arkady
name: Finkel'stein, Alexander M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The recently measured spin susceptibility of the two dimensional electron gas exhibits a strong dependence on temperature, which is incompatible with the standard Fermi liquid phenomenology. Here we show that the observed temperature behavior is inherent to ballistic two dimensional electrons. Besides the single-particle and collective excitations, the thermodynamics of Fermi liquid systems includes effects of the branch-cut singularities originating from the edges of the continuum of pairs of quasiparticles. As a result of the rescattering induced by interactions, the branch-cut singularities generate non-analyticities in the thermodynamic potential which reveal themselves in anomalous temperature dependences. Calculation of the spin susceptibility in such a situation requires a non-perturbative treatment of the interactions. As in high-energy physics, a mixture of the collective excitations and pairs of quasiparticles can be effectively described by a pole in the complex momentum plane. This analysis provides a natural explanation for the observed temperature dependence of the spin susceptibility, both in sign and magnitude.
description: 8 pages, 3 figures
Isoforma planata OPITZ 2015, nov. sp.
Creators: name: Opitz, Weston
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cleridae
Isoforma
Isoforma planata

description: Isoforma planata OPITZ nov. sp.
(Figs 72, 157, 174)
Holotype: ♀. Mexico, Chiapas, Laguna Belgica, 16 km NW Ocozocoautla, 970 m, 7-VI-1990, H. & A. Howden (CMNC).
Diagnosis: Within Isoforma only in the members of this species is the 9 th antennomere subquadrate.
Description: Size: Length 12.0 mm; width 7.0 mm. Form: As in Fig. 157. Color: Cranium mostly black, vertex with narrow testaceous streak; pronotum mostly flavotestaceous, with two paralateral black lines; elytra bicolorous, basal half testaceous, distal half black. Head: Antennal capitulum very long (Fig. 72), each capitular antennomere longer than funicle; antennal carina very prominent; frons as wide as eyes; EW/FW 20/20. Thorax: Pronotal anterior margin linear, not projected at middle; side margins of disc rounded at middle, quadrate; PW/PL 75/75; elytra conspicuously flared; discal carinae not present; EL/EW 320/120. Abdomen: Female pygidium not incised at distal margin.
Natural history: The holotype was collected during June, at 970 m.
Distribution (Fig. 174): Known only from the type locality.
Etymology: The trivial name planata is a Greek adjective derived from platys (= wide). I refer to the extensive width of the elytra.
description: Published as part of Opitz, Weston, 2015, Systematics of the checkered beetle subfamily Platynopterinae SPINOLA (Coleoptera Cleridae), pp. 1513-1572 in Linzer biologische Beiträge 47 (2) on pages 1537-1538, DOI: 10.5281/zenodo.5282503
Downstream from the Locks: The Technopolitics of Water in Panama’s Urban Borderlands
Creators: name: Bonilla Garcia, Francisco
Publisher: name: Carnegie Mellon University
Year: 2025
Subjects: classificationCode: 330402
subject: History and theory of the built environment (excl. architecture)
classificationCode: 33
subject: Built environment and design

description: This dissertation explores the intertwined histories of urban governance, water management, and United States imperialism in Panama from the colonial period through the mid-20th century. Focusing on the socio-technical and ecological transformations wrought by the Panama Canal and its associated infrastructures, it examines how water emerged as a central element in shaping urban life and geopolitics in the isthmus. By employing the concept of the hydrosocial cycle, this study frames water not merely as a natural resource but as a contested medium of power, negotiation, and resistance.The research situates Panama’s urban water infrastructures—aqueducts, sewer systems, and fire-fighting networks—within broader imperial and environmental contexts. It reveals how US-led sanitary campaigns and technological interventions reconfigured the urban fabric, consolidating Washington's dominance while engendering dependency and resistance among Panamanian communities. These systems, designed to meet the dual demands of urban governance and interoceanic transit, became arenas of socio-political contestation, symbolizing both modernity and inequality.This work advances historiographies of the Panama Canal, urban history, and environmental governance by challenging triumphalist narratives of U.S. modernization. By blending environmental, urban, and imperial histories, this dissertation provides a nuanced understanding of water’s role in shaping the lived experiences of power, infrastructure, and identity in Panama. It invites to reconsider the isthmus’s past and present through the fluid and contested medium of water, offering critical insights into the broader dynamics of empire and urbanization.
The effect of edge knots on the strength of Western SPF MSR lumber
Creators: name: Courchene, Terry
Publisher: name: University of British Columbia
Year: 2009

description: Mill visits were conducted to evaluate the effect of Visual Quality Level (VQL) restrictions of edge knots on the yields of Machine Stress Rated (MSR) lumber. This initial study indicated that edge knots contribute significantly to the amount of MSR lumber that is being downgraded because of visual override requirements, representing in excess of $15,000 per month in lost revenue to MSR producers. Therefore, an experimental study was initiated to study the effect of large VQL (edge knots) on the strength properties of Spruce-Pine-Fir (SPF) MSR lumber. Two groups of material were studied that had been graded by a Continuous Lumber Tester (CLT) to receive a 1650E-1.5Fb MSR grade designation. One group called on-grade complied with the visual override requirements and the other group, VQL, should contained at least one edge knot with a VQL greater than 25 % of the cross sectional area. All specimens were nominal 38 mm x 89 mm SPF lumber collected from the same MSR production run. Manual measurements of the VQLs was conducted on all 750 specimens and they were then tested nondestructively to determine flat-wise and edge-wise modulus of elasticity. All the specimens were randomly divided into either tension or third point bending testing since these are the most commonly used destructive tests. There were weak relationships noted between the measured VQL size and destructive strength values. Strength results were as expected in that tension strength proved to be more important and restrictive. Even when some boundaries were placed on the VQL size the tension specimens failed to meet the grade requirements while the bending specimens exceeded the requirements in all cases. This results from the fact that MSR production of SPF lumber is governed by the MOE value determined by the CLT. It is not controlled by the bending strength as is the case for Douglas-fir; whose strength values were used in the VQL size determination. Two procedures, simulation and proportionality, were used to determine the amount of large VQL material that can be included with the current on-grade production and meet grade requirements. These procedures were conducted with the various VQL groups for both destructive tests and confirmed that tension strength is the governing factor. The results highlight the importance of the amount of VQL material to include in a grade; therefore, proper and thorough testing by organizations is required for large VQL inclusion.
Additional file 1 of Delegation of patient related tasks to allied health assistants: a time motion study
Creators: name: Snowdon, David A
name: King, Olivia A
name: Dennett, Amy
name: Pinson, Jo-Anne
name: Shannon, Michelle M
name: Collyer, Taya A
name: Davis, Annette
name: Williams, Cylie M
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Supplementary Material 1
Essentialité dans les bases additives
Creators: name: Deschamps, Bruno
name: Farhi, Bakir
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B13, 11P99, 11A99, 11P32

description: In this article we study the notion of essential subset of an additive basis, that is to say the minimal finite subsets $P$ of a basis $A$ such that $A \setminus P$ doesn't remains a basis. The existence of an essential subset for a basis is equivalent for this basis to be included, for almost all elements, in an arithmetic non-trivial progression. We show that for every basis $A$ there exists an arithmetic progression with a biggest common difference containing $A$. Having this common difference $a$ we are able to give an upper bound to the number of essential subsets of $A$: this is the radical's length of $a$ (in particular there is always many finite essential subsets in a basis). In the case of essential subsets of cardinality 1 (essential elements) we introduce a way to "dessentialize" a basis. As an application, we definitively improve the earlier result of Deschamps and Grekos giving an upper bound of the number of the essential elements of a basis. More precisely, we show that for all basis $A$ of order $h$, the number $s$ of essential elements of $A$ satisfy $s\leq c\sqrt{\frac{h}{\log h}}$ where $c=30\sqrt{\frac{\log 1564}{1564}}\simeq 2,05728$, and we show that this inequality is best possible.
description: 24 pages (in french)
Pilosirus OPITZ 1997
Creators: name: Opitz, Weston
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cleridae
Pilosirus

description: Pilosirus OPITZ, 1997
Pilosirus OPITZ, 1997: 54. Type species: Pilosirus brunoi OPITZ, 1997: 54. By original designation.
Diagnosis: Within Platynopterinae only in members of Pilosirus (Fig. 73) and Ambonoides (Fig. 62) is the 7 th antennomere disproportionally large. But, in Pilosirus specimens the pronotal disc is evenly convex whereas in Ambonoides specimens the pronotal disc is up-curved and flanged at the sides.
Description: Pilosirus and its type species were adequately described and illustrated in OPITZ (1997: 54).
description: Published as part of Opitz, Weston, 2015, Systematics of the checkered beetle subfamily Platynopterinae SPINOLA (Coleoptera Cleridae), pp. 1513-1572 in Linzer biologische Beiträge 47 (2) on page 1539, DOI: 10.5281/zenodo.5282503
Smart Grid Management using Blockchain: Future Scenarios and Challenges
Creators: name: Cioara, Tudor
name: Pop, Claudia
name: Zanc, Razvan
name: Anghel, Ionut
name: Antal, Marcel
name: Salomie, Ioan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Decentralized management and coordination of energy systems are emerging trends facilitated by the uptake of the Internet of Things and Blockchain offering new opportunities for more secure, resilient, and efficient energy distribution. Even though the use of distributed ledger technology in the energy domain is promising, the development of decentralized smart grid management solutions is in the early stages. In this paper, we define a layered architecture of a blockchain-based smart grid management platform featuring energy data metering and tamper-proof registration, business enforcement via smart contracts, and Oracle-based integration of high computational services supporting the implementation of future grid management scenarios. Three such scenarios are discussed from the perspective of their implementation using the proposed blockchain platform and associated challenges: peer to peer energy trading, decentralized management, and aggregation of energy flexibility and operation of community oriented Virtual Power Plants.
description: Accepted and presented at: 19th RoEduNet Conference: Networking in Education and Research, December 11-12, 2020