cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
UV and IR rational terms in two-loop amplitudes: first insights
Creators: name: Zhang, H.
Publisher: name: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Year: 2022

description: In this proceeding, we review the construction of UV rational terms at two loops, and present the first insights of the cancellation mechanism of two-loop IR rational terms with an example in massive QED. The rational terms are crucial ingredients that are needed for the four-dimensional calculation of scattering amplitudes, which is suitable for automation in a numerical framework. Within automated one-loop tools, the numerator of D dimensionally regularised loop amplitudes are usually constructed through numerical algorithms in D=4 dimensions, while the contributions of the missing (D-4) dimensional parts can be reconstructed a posteriori by means of rational counterterms. At two loops with four-dimensional numerators, we show that the missing (D-4) part can also be reconstructed through the process-independent two-loop rational terms in any renormalisable theories. This opens the door to the development of an efficient two-loop amplitudes automation in the future.
title: Επαγγελματική εξουθένωση και επίδραση της στην εργασιακή ικανοποίηση και τάση φυγής από την εργασία : η περίπτωση του νοσοκομείου Τρικάλων
title: Job burnout effect on job satisfaction and job turnover : the case of hospital of Trikala city
titleType: AlternativeTitle
Creators: name: Παπανικολάου, Ιωάννης
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Επαγγελματική εξουθένωση
subject: Εργασιακή ικανοποίηση
subject: Τάση φυγής

description: Η επαγγελματική εξουθένωση (burn-out) προκαλεί σημαντικές και αρνητικές επιπτώσεις, όπως μεταξύ άλλων μειώνει το επίπεδο της εργασιακής ικανοποίησης (job satisfaction) και αυξάνει το επίπεδο της τάσης φυγής (job turnover) είτε από τον οργανισμό, είτε και από την ίδια την εργασία. Στο πλαίσιο, λοιπόν, της παρούσας διπλωματικής εργασίας μετρήθηκε η επαγγελματική εξουθένωση, το επίπεδο εργασιακής ικανοποίησης και η τάση φυγής σε ένα δείγμα υγειονομικών από το νοσοκομείο Τρικάλων, αλλά και η επίδραση της επαγγελματικής εξουθένωσης στην επαγγελματική ικανοποίηση και την τάση φυγής. Χρησιμοποιώντας δείγμα Ν=175 συμμετεχόντων εργαζόμενων στο νοσοκομείο Τρικάλων, βρέθηκε ότι υπάρχει μέτριο επίπεδο επαγγελματικής εξουθένωσης ως προς τη διάσταση της συναισθηματικής εξουθένωσης, υψηλό επίπεδο ως προς την διάσταση της αποπροσωποποίησης και χαμηλό επίπεδο ως προς τη διάσταση της προσωπικής επίτευξης. Βρέθηκε, επίσης, χαμηλό επίπεδο εργασιακής ικανοποίησης από εξωτερικούς παράγοντες και υψηλό από εξωτερικούς. Βρέθηκε, ακόμα, υψηλό επίπεδο τάσης φυγής από τον οργανισμό και χαμηλό επίπεδο τάσης φυγής από το επάγγελμα. Βρέθηκε, τέλος, ότι οι περισσότερες διαστάσεις της επαγγελματικής εξουθένωσης επηρεάζουν αρνητικά την εργασιακή ικανοποίηση, μειώνοντας την και την τάση φυγής αυξάνοντας την, σύμφωνα με τη θεωρία και τη σχετική εμπειρία. Με βάση τα παραπάνω αποτελέσματα, προτείνεται συγκεκριμένα μέτρα διοίκησης για μια αποτελεσματική διαχείριση της κατάστασης.
Saturation of the leading spike growth in backward Raman amplifiers
Creators: name: Malkin, V. M.
name: Toroker, Z.
name: Fisch, N. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Backward Raman amplification of laser pulses in plasmas can produce nearly relativistic unfocused output intensities and multi-exawatt powers in compact devices. The largest achievable intensity depends on which of major competitive processes sets this limit. It is shown here that the relativistic electron nonlinearity can cause saturation of the leading amplified spike intensity before filamentation instabilities develop. A simple analytical model for the saturation, which supports numerical simulations, is suggested. The upper limit for the leading output spike unfocused intensity is calculated.
Effect of exposure to laser light on Pectobacterium atrosepticum growth and root colonisation
Creators: name: , Ge
name: , Dong
name: , Liu
name: Wright
name: Humphris
name: , Dupuy
name: MacDonald
Publisher: name: Zenodo
Year: 2022
Subjects: Attachment, colonisation, Lactuca sativa, optical trapping, Pectobacterium atrosepticum, rhizosphere

description: To assess the effect of the higher than ambient light doses received by bacteria in the optical trapping experiments, we investigated both the effect on the mortality of the bacteria and the ability of the bacteria to colonise potato roots. In a trapping experiment, it is not possible to follow the fate of a single cell to study the impact of the light dose received. Therefore, we designed two slightly different microscopic systems to expose entire bacterial colonies to light doses that are equivalent or larger than those received during a trapping experiment. The two systems were designed for precise targeting of bacterial colonies on a petri dish with either the low power infrared laser used for trapping, or a high-power pulse laser with known ability to damage biological cells. Once targeted, the region receiving the laser light can either be studied for viability using dead-cell staining or they can be sampled for root colonisation experiments.
Προσδιοριστικοί παράγοντες απόδοσης και μεταβλητότητας στην αγορά εμπορευμάτων
Creators: name: Στέας, Παναγιώτης
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Commodities
subject: Απόδοση
subject: Μεταβλητότητα
subject: Εμπορεύματα
subject: Ζάχαρη
subject: Πετρέλαιο
subject: ARCH
subject: GARCH
subject: VAR
subject: Value at Risk
subject: Monte Carlo
subject: Inverse Ratio Mills

description: Η παρούσα εργασία αποτελεί ένα εγχείρημα στην κατεύθυνση της εφαρμογής και της αξιολόγησης των μοντέλων ARCH, GARCH και VaR, καθώς και τα εργαλεία Monte Carlo και Inverse ratio Mills, στην εκτίμηση της απόδοσης και της επικινδυνότητας συγκριτικά με τις τιμές των δεικτών BNO και Sugar, στην αγορά εμπορευμάτων (commodities). Χρησιμοποιώντας ημερήσια δεδομένα για μια περίοδο δέκα χρόνων από την πλατφόρμα της Yahoo Finance, η έρευνα επικεντρώνεται στην ανάλυση της εποχικότητας και της αστάθειας αυτών των δεικτών. Τα αποτελέσματα αναδεικνύουν τη σημαντικότητα της χρήσης προηγμένων μοντέλων για την κατανόηση της δυναμικής των αγορών και την εκτίμηση των ρίσκων στην αγορά εμπορευμάτων.
Asymptotic freedom in Horava-Lifshitz gravity
Creators: name: D'Odorico, Giulio
name: Saueressig, Frank
name: Schutten, Marrit
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the Wetterich equation for foliated spacetimes to study the RG flow of projectable Horava-Lifshitz gravity coupled to n Lifshitz scalars. Using novel results for anisotropic heat kernels, the matter-induced beta functions for the gravitational couplings are computed explicitly. The RG flow exhibits an UV attractive anisotropic Gaussian fixed point where Newton's constant vanishes and the extra scalar mode decouples. This fixed point ensures that the theory is asymptotically free in the large-n expansion, indicating that projectable Horava-Lifshitz gravity is perturbatively renormalizable. Notably, the fundamental fixed point action does not obey detailed balance.
description: 4 pages, 2 figures
WIMPy Leptogenesis in Non-Standard Cosmologies
Creators: name: Mahanta, Devabrat
name: Borah, Debasish
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the possibility of generating baryon asymmetry of the universe from dark matter (DM) annihilations during non-standard cosmological epochs. Considering the DM to be of weakly interacting massive particle (WIMP) type, the generation of baryon asymmetry via leptogenesis route is studied where WIMP DM annihilation produces a non-zero lepton asymmetry. Adopting a minimal particle physics model to realise this along with non-zero light neutrino masses, we consider three different types of non-standard cosmic history namely, (i) fast expanding universe, (ii) early matter domination and (iii) scalar-tensor theory of gravity. By solving the appropriate Boltzmann equations incorporating such non-standard history, we find that the allowed parameter space consistent with DM relic and observed baryon asymmetry gets enlarged with the possibility of lower DM mass in some scenarios. While such lighter DM can face further scrutiny at direct search experiments, the non-standard epochs offer complementary probes on their own.
description: 50 pages, 21 captioned figures, matches version accepted for publication in JCAP
Generating genuine multipartite entanglement via XY-interaction and via projective measurements
Creators: name: Ali, Mazhar
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have studied the generation of multipartite entangled states for the superconducting phase qubits. The experiments performed in this direction have the capacity to generate several specific multipartite entangled states for three and four qubits. Our studies are also important as we have used a computable measure of genuine multipartite entanglement whereas all previous studies analyzed certain probability amplitudes. As a comparison, we have reviewed the generation of multipartite entangled states via von Neumann projective measurements.
A theoretical estimate of intrinsic ellipticity bispectra induced by angular momenta alignments
Creators: name: Merkel, Philipp M.
name: Schaefer, Bjoern Malte
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Intrinsically aligned galaxy shapes are one of the most important systematics in cosmic shear measurements. So far theoretical studies of intrinsic alignments almost exclusively focus on their statistics at the two-point level. Results from numerical simulations, however, suggest that third-order measures might be even stronger affected. We therefore investigate the (angular) bispectrum of intrinsic alignments. In our fully analytical study we describe intrinsic galaxy ellipticities by a physical alignment model, which makes use of tidal torque theory. We derive expressions for the various combinations of intrinsic and gravitationally induced ellipticities, i.e. III-, GII- and GGI-alignments, and compare our results to the shear bispectrum, the GGG-term. The latter is computed using hyper-extended perturbation theory. Considering equilateral and squeezed configurations we find that for a Euclid-like survey intrinsic alignments (III-alignments) start to dominate on angular scales smaller than 20 arcmin and 13 arcmin, respectively. This sensitivity to the configuration-space geometry may allow to exploit the cosmological information contained in both the intrinsic and gravitationally induced ellipticity field. On smallest scales (l ~ 3000) III-alignments exceed the lensing signal by at least one order of magnitude. The amplitude of the GGI-alignments is the weakest. It stays below that of the shear field on all angular scales irrespective of the wave-vector configuration.
description: 12 pages, 6 figures, MNRAS accepted
Supplementary Material B: 3D Warped Mesh showcasing the shape variation on the first 4 principal components of Figure 3A & Figure 3B. from Intrinsic & extrinsic drivers of shape variation in the Albatross compound bill
Creators: name: Tyler, Joshua
name: Hocking, David P.
name: Younger, Jane L.
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Animal Systematics and Taxonomy
subject: Plant Systematics and Taxonomy

description: 3D Warped Mesh & Warped Wireframes showcasing the shape variation on the first 4 principal components of Figure 3A & Figure 3B
Supplementary Material D: Homogeneity of Slopes and Procrustes ANOVA tests. from Intrinsic & extrinsic drivers of shape variation in the Albatross compound bill
Creators: name: Tyler, Joshua
name: Hocking, David P.
name: Younger, Jane L.
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Animal Systematics and Taxonomy
subject: Plant Systematics and Taxonomy

description: Homogeneity of Slopes and Procrustes ANOVA tests. p-values from 1000 permutations, with bold indicating significance.
An overview of the experimental study of quark-gluon matter in high-energy nucleus-nucleus collisions
Creators: name: Andronic, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An overview is given on the experimental study of quark-gluon matter produced in relativistic nucleus-nucleus collisions, with emphasis on recent measurements at the Large Hadron Collider.
description: 31 pages, 20 figures; invited review in Int. J. Mod. Phys. A; based on an overview talk at the Lepton-Photon 2013 conference
Quantum simulation of extended electron-phonon coupling models in a hybrid Rydberg atom setup
Creators: name: Mendonça, João Pedro
name: Jachymski, Krzysztof
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: State-of-the-art experiments using Rydberg atoms can now operate with large numbers of trapped particles with tunable geometry and long coherence time. We propose a way to utilize this in a hybrid setup involving neutral ground state atoms to efficiently simulate condensed matter models featuring electron-phonon coupling. Such implementation should allow for controlling the coupling strength and range as well as the band structure of both the phonons and atoms, paving the way towards studying both static and dynamic properties of extended Hubbard-Holstein models.
Why are the magnetic field directions measured by Voyager 1 on both sides of the heliopause so similar?
Creators: name: Grygorczuk, Jolanta
name: Czechowski, Andrzej
name: Grzedzielski, Stanislaw
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The solar wind carves in the interstellar plasma a cavity bounded by a surface, called the heliopause (HP), that separates the plasma and magnetic field of solar origin from the interstellar ones. It is now generally accepted that in August 2012 Voyager 1 (V1) crossed that boundary. Unexpectedly, the magnetic fields on both its sides, although theoretically independent of each other, were found to be similar in direction. This delayed the identification of the boundary as the heliopause and led to many alternative explanations. Here we show that the Voyager 1 observations can be readily explained and, after the Interstellar Boundary Explorer (IBEX) discovery of the ribbon, could even have been predicted. Our explanation relies on the fact that the Voyager 1 and the undisturbed interstellar field directions (which we assume to be given by the IBEX ribbon center (RC)) share the same heliolatitude (~34.5 degrees) and are not far separated in longitude (difference ~27 degrees). Our result confirms that Voyager 1 has indeed crossed the heliopause and offers the first independent confirmation that the IBEX ribbon center is in fact the direction of the undisturbed interstellar magnetic field. For Voyager 2 we predict that the difference between the inner and the outer magnetic field directions at the heliopause will be significantly larger than the one observed by Voyager 1 (~30 degrees, instead of ~20 degrees), and that the outer field direction will be close to the RC.
description: 17 pages, 3 figures, 2 tables, accepted for publication in the Astrophysical Journal Letters
Per una European Social Union. Dal pilastro europeo dei diritti sociali a un Welfare multilivello?
Creators: name: Allegri, Giuseppe
Publisher: name: Universita' degli Studi di Salerno
Year: 2019
Subjects: European Social Union
Solidarietà
Pilastro europeo dei diritti sociali
Reddito di base
Euro-Dividendo

description: Con questo intervento si ragiona intorno alla questione sociale continentale, intesa come occasione per affermare, istituire e garantire una sorta di Politica Sociale Comune fondata su una base condivisa di diritti, garanzie e tutele di una inedita solidarietà continentale, quindi anche di doveri sociali, tra i diversi Stati membri, in un quadro istituzionale condiviso a fronte di una prolungata crisi dei sistemi nazionali di Welfare e all’impoverimento di classi medie e strati popolari. Si tratta di una proposta che parte dall’idea a lungo discussa di un’Europa sociale e si spinge ora verso una concreta European Social Union after the Crisis, approfittando dello spazio aperto dall’adozione dello European Pillar of Social Rights (novembre 2017), da ampliare e implementare ulteriormente, per istituire un Welfare continentale multilivello che preveda anche una prima misura di possibile reddito di base, inteso come Euro-Dividendo nell’Eurozona e come sintesi tra la previsione di un reddito minimo e di un sussidio universale continentale di disoccupazione.
Interpreting broad emission-line variations I : Factors influencing the emission-line response
Creators: name: Goad, M. R.
name: Korista, K. T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the sensitivity of the measured broad emission-line responsivity dlog f_line/dlog f_cont to continuum variations in the context of straw-man BLR geometries of varying size with fixed BLR boundaries, and for which the intrinsic emission-line responsivity is known a priori. We find for a generic emission-line that the measured responsivity, delay and maximum of the cross-correlation function are correlated for characteristic continuum variability timescales T_char less than the maximum delay for that line tau_max(line) for a particular choice of BLR geometry and observer orientation. The above correlations are manifestations of geometric dilution arising from reverberation effects within the spatially extended BLR. When present, geometric dilution reduces the measured responsivity, delay and maximum of the cross-correlation function. We also find that the measured responsivity and delay show a strong dependence on light-curve duration, with shorter campaigns resulting in smaller than expected values, and only a weak dependence on sampling rate. The observed strong negative correlation between continuum level and line responsivity found in previous studies cannot be explained by differences in the sampling pattern, light-curve duration or in terms of purely geometrical effects. To explain this and to satisfy the observed positive correlation between continuum luminosity and BLR size in an individual source, the responsivity-weighted radius must increase with increasing continuum luminosity. For a BLR with fixed inner and outer boundaries this requires radial surface emissivity distributions which deviate significantly from a simple power-law, and in such a way that the intrinsic emission-line responsivity increases toward larger BLR radii, in line with photoionisation calculations.
description: 21 pages, 17 figures, accepted for publication in MNRAS July 2014
Tidal heating in a Riemann-Cartan spacetime
Creators: name: Hensh, Sudipta
name: Liberati, Stefano
name: Vitagliano, Vincenzo
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider possible perturbations of the black hole event horizon induced by matter with spin, extending the derivation of the Hawking-Hartle formula (tidal heating) in the presence of torsion. When specialised to theories with a non-vanishing (pseudo-)traceless component of the (con)torsion tensor, we remarkably find that the tidal heating phenomenon gets modified by additional torsion-dependent terms, in agreement with previous investigations based on Jacobson's spacetime thermodynamics approach. These results lead to relevant phenomenological and theoretical consequences: modifications in the Hawking-Hartle term change the Bondi mass associated with the gravitational radiation observed at infinity, and modify the Hawking radiation spectrum of evaporating black holes.
Controlling pulse stability in singularly perturbed reaction-diffusion systems
Creators: name: Veermann, Frits
name: Schneider, Isabelle
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Linear stability analysis
subject: Control theory
subject: Dynamical systems
subject: Reaction-diffusion system
subject: Perturbation theory
subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik

description: The aim of this paper is to investigate the use of Pyragas control on the stability of stationary, localized coherent structures in a general class of two-component, singularly perturbed, reaction-diffusion systems. We use noninvasive Pyragas-like proportional feedback control to stabilize a singular pulse solution to a two-component, singularly perturbed reaction-diffusion system. We show that in a significant region of parameter space, the control can be adjusted to stabilize an otherwise unstable pulse.
title: A characterization for solutions to autonomous obstacle problems with general growth
Creators: name: Ricco, Samuele
Publisher: name: TU Wien
Year: 2023
Subjects: Obstacle problem
Convex analysis
Variational inequality
General growth

description: Obstacle problems are by now well studied in the context of regularity theory, but a still pending issue is the relation between minima and extremals. The regularity of the solutions is often proved thanks to the fact that the minimizers are extremals too, i.e. they solve a variational inequality related to the problem. While in the context of standard growth conditions the literature is well established, under more general growth hypotheses there are still issues in this regard. Considering an autonomous obstacle problem, whose Lagrangian satisfies proper hypotheses of convexity and superlinearity at infinity, I will present a characterization for the unique solution in terms of extremality and a primal-dual formulation of the problem.
Features of Molecular Structure Beneficial for Optical Pumping
Creators: name: Dragan, James B.
name: Antonov, Ivan O.
name: Odom, Brian C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Fast and efficient state preparation of molecules can be accomplished by optical pumping. Molecular structure that most obviously facilitates cycling involves a strong electronic transition, with favorable vibrational branching (diagonal Franck-Condon factors, aka FCFs) and without any intervening electronic states. Here, we propose important adjustments to those criteria, based on our experience optically pumping SiO$^+$. Specifically, the preference for no intervening electronic states should be revised, and over-reliance on FCFs can miss important features. The intervening electronic state in SiO$^+$is actually found to be beneficial in ground rotational state preparation, by providing a pathway for population to undergo a parity flip. This contribution demonstrates the possibility that decay through intervening states may help state preparation of non-diagonal or polyatomic molecules. We also expand upon the definition of favorable branching. In SiO$^+$, we find that the off-diagonal FCFs fail to reflect the vibrational heating versus cooling rates. Since the branching rates are determined by transition dipole moments (TDMs) we introduce a simple model to approximate the TDMs for off-diagonal decays. We find that two terms, set primarily by the slope of the dipole moment function ($dμ/dx$) and offset in equilibrium bond lengths ($Δx = r_e^g-r_e^e$), can add (subtract) to increase (decrease) the magnitude of a given TDM. Applying the model to SiO$^+$, we find there is a fortuitous cancellation, where decay leading to vibrational excitation is reduced, causing optical cycling to lead naturally to vibrational cooling.
Circumstellar Medium Interaction in SN 2018lab, A Low-Luminosity II-P Supernova observed with TESS
Creators: name: Pearson, Jeniveve
name: Hosseinzadeh, Griffin
name: Sand, David J.
name: Andrews, Jennifer E.
name: Jencson, Jacob E.
name: Dong, Yize
name: Bostroem, K. Azalee
name: Valenti, Stefano
name: Janzen, Daryl
name: Retamal, Nicolás Meza
name: Lundquist, Michael J.
name: Wyatt, Samuel
name: Amaro, Rachael C.
name: Burke, Jamison
name: Howell, D. Andrew
name: McCully, Curtis
name: Hiramatsu, Daichi
name: Jha, Saurabh W.
name: Smith, Nathan
name: Haislip, Joshua
name: Kouprianov, Vladimir
name: Reichart, Daniel E.
name: Yang, Yi
name: Rho, Jeonghee
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present photometric and spectroscopic data of SN 2018lab, a low luminosity type IIP supernova (LLSN) with a V-band peak luminosity of $-15.1\pm0.1$ mag. SN 2018lab was discovered by the Distance Less Than 40 Mpc (DLT40) SNe survey only 0.73 days post-explosion, as determined by observations from the Transiting Exoplanet Survey Satellite (TESS). TESS observations of SN 2018lab yield a densely sampled, fast-rising, early time light curve likely powered by circumstellar medium (CSM) interaction. The blue-shifted, broadened flash feature in the earliest spectra ($<$2 days) of SN 2018lab provide further evidence for ejecta-CSM interaction. The early emission features in the spectra of SN 2018lab are well described by models of a red supergiant progenitor with an extended envelope and close-in CSM. As one of the few LLSNe with observed flash features, SN 2018lab highlights the need for more early spectra to explain the diversity of flash feature morphology in type II SNe.
C^1-generic billiard tables have a dense set of periodic points
Creators: name: Arnaud, Marie-Claude
Publisher: name: arXiv
Year: 2014
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We prove that the set of periodic points of a generic C^1-billiard table is dense in the phase space.
description: 6 pages
A new approach to investigate the effect of burial depth and clay content on fault permeabilities applied at the Njord Field
Creators: name: Müller, Philipp
name: Hermanrud, Christian
name: Fossen, Haakon
Publisher: name: Geological Society of London
Year: 2023
Subjects: classificationCode: 3705
subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary Material. Segment-specific information, fault overview, and locale temperature gradient computation.
JWST's PEARLS: dust attenuation and gravitational lensing in the backlit-galaxy system VV 191
Creators: name: Keel, William C.
name: Windhorst, Rogier A.
name: Jansen, Rolf A.
name: Cohen, Seth H.
name: Summers, Jake
name: Holwerda, Benne
name: Bradford, Sarah T.
name: Robertson, Clayton D.
name: Ferrami, Giovanni
name: Wyithe, Stuart
name: Yan, Haojing
name: Conselice, Christopher J.
name: Driver, Simon P.
name: Robotham, Aaron
name: Grogin, Norman A.
name: Willmer, Christopher N. A.
name: Koekemoer, Anton M.
name: Frye, Brenda L.
name: Hathi, Nimish P.
name: Ryan,, Russell E.
name: Pirzkal, Nor
name: Marshall, Madeline A.
name: Coe, Dan
name: Diego, Jose M.
name: Broadhurst, Thomas J.
name: Rutkowski, Michael J.
name: Wang, Lifan
name: Willner, S. P.
name: Petric, Andreea
name: Cheng, Cheng
name: Zitrin, Adi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We derive the spatial and wavelength behavior of dust attenuation in the multiple-armed spiral galaxy VV191b using backlighting by the superimposed elliptical system VV191a in a pair with an exceptionally favorable geometry for this measurement. Imaging using JWST and HST spans the wavelength range 0.3-4.5 microns with high angular resolution, tracing the dust in detail from 0.6 to 1.5 microns. Distinct dust lanes continue well beyond the bright spiral arms, and trace a complex web, with a very sharp radial cutoff near 1.7 Petrosian radii. We present attenuation profiles and coverage statistics in each band at radii 14-21 kpc. We derive the attenuation law with wavelength; the data both within and between the dust lanes clearly favor a stronger reddening behavior (R ~ 2.0 between 0.6 and 0.9 microns, approaching unity by 1.5 microns) than found for starbursts and star-forming regions of galaxies. Power-law extinction behavior lambda^(-beta) gives beta=2.1 from 0.6-0.9 microns. R decreases at increasing wavelengths (R~1.1 between 0.9 and 1.5 microns), while beta steepens to 2.5. Mixing regions of different column density flattens the wavelength behavior, so these results suggest a different grain population than in our vicinity. The NIRCam images reveal a lens arc and counterimage from a background galaxy at z~1, spanning 90 degrees azimuthally at 2.8" from the foreground elliptical galaxy nucleus, and an additional weakly-lensed galaxy. The lens model and imaging data give a mass/light ratio 7.6 in solar units within the Einstein radius 2.0 kpc.
description: Accepted by Astron. J. Analysis redone since submission, using updated JWST calibrations. Dust reddening behavior is steeper with wavelength and lensed galaxy redshift lower than we first derived
Universality in Pure Gravity Mediation with Vector Multiplets
Creators: name: Evans, Jason L.
name: Olive, Keith A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider models of Pure Gravity Mediation in which scalar mass universality is imposed at the grand unified scale and gaugino masses are generated through loops. The minimal model requires a very restricted range for $\tan β\approx 2-3$ and scalar masses (set by the gravitino mass) of order 300 TeV - 1.5 PeV in order to obtain a Higgs mass near 126 GeV. Here we augment the minimal model with one or more sets of vector multiplets (either a ${10}$ and $\bar {10}$ pair or one or more $5$ and $\bar 5$ pairs). If coupled to the MSSM Higgs, these allow for radiative electroweak symmetry breaking over a significantly larger range of $\tan β\approx 2-40$ and can fit the Higgs mass with much smaller values of the gravitino mass. In these models, the lightest supersymmetric particle (LSP) is often the bino, and in order to satisfy the relic density constraint, the bino must be nearly degenerate with either the wino or gluino. In the models considered here, bino gluino coannihilations determine the relic density and since the two are nearly degenerate, LHC limits on the gluino mass are greatly relaxed allowing light relatively gravitinos and gluino masses well within the reach of the LHC.
The determinants of neurological phenotypes during acute hypertensive crises – a preliminary study
Creators: name: Pektezel, Mehmet Yasir
name: Topcuoglu, Mehmet Akif
name: Gocmen, Rahsan
name: Erbil, Bulent
name: Kunt, Mehmet Mahir
name: Aksu, Nalan Metin
name: Oguz, Kader Karli
name: Arsava, Ethem Murat
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Cell Biology
subject: Neuroscience
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Hematology

description: Background and Purpose: Acute blood pressure elevations lead to wide spectrum of neurologic manifestations, ranging from no overt neurologic symptoms to catastrophic events like ICH. Little is known regarding the determinants of this clinical variability. We determined clinical and imaging features of hypertensive crisis patients with normal neurological examination, ICH and posterior reversible encephalopathy syndrome (PRES). Methods: Cranial MRI was performed in patients with hypertensive urgency or emergency but normal neurological examination. Their clinical characteristics, and imaging features regarding cerebral small vessel disease were compared to ICH and PRES patients. Results: Hypertensive ICH patients (n = 58) were older, less likely to have hyperlipidemia, less commonly used calcium channel blockers, and had higher burden of chronic cSVD features in comparison to hypertensive crisis patients with normal neurological findings (n = 51). Multivariate analyses revealed cSVD burden score (p = 0.003) to be related with ICH, while higher admission blood pressure levels (p < 0.001), hyperlipidemia (p = 0.006) and calcium channel blocker usage (p = 0.005) were more common in patients with normal neurological examination. The PRES (n = 9) group was comprised of younger patients with recent history of hypertension and low burden of cSVD. Conclusions: Hypertensive surge is associated with ICH when cSVD burden is high, probably caused by microvascular dysfunction secondary to long-standing hypertension, while the episode causes no structural damage if this burden is less. Although our observations are exploratory, short term but severe hypertension manifests with PRES possibly due to the absence of adaptive changes.
Data Transfer between Two USB Flash SCSI Disks using a Touch Screen
Creators: name: Chakravorty, Anurag A.
name: Suryawanshi, Raghwendra J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: Under normal circumstances, as an intermediate device, if we want to move or copy data from one mass storage device to another, we use a computer in the form of desktops, laptops, etc. We need a device which can be used as an intermediate device, also which is a complete blend of hardware & software. This device is a gadget that can be used to transfer data between two flash SCSI devices via a touch screen. This is a user friendly device which uses the most popular bus USB (Universal Serial Bus) with Type-A connector. It is governed by the USB 2.0 Protocol. One of the major advantage of this device is its portability.
description: 5 pages, 7 figures, Published with International Journal of Engineering Trends and Technology (IJETT)
Dispersive analysis of neutral meson mixing
Creators: name: Li, Hsiang-nan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the neutral meson mixing by directly solving the dispersion relation obeyed by the mass and width differences of the two meson mass eigenstates. We solve for the parameters $x$ and $y$, proportional to the mass and width differences in the charm mixing, respectively, taking the box-diagram contributions to $x(s)$ and $y(s)$ at large mass squared $s$ of a fictitious $D$ meson as inputs. The SU(3) symmetry breaking is introduced through physical thresholds of different $D$ meson decay channels for $y(s)$. These threshold-dependent effects, acting like nonperturbative power corrections in QCD sum rules, stabilize the solutions of $y(s=m_D^2)$ with the $D$ meson mass $m_D$. We then calculate $x(s)$ through the dispersive integration of $y(s)$, and show that our predictions $x(m_D^2)\approx 0.21\%$ and $y(m_D^2)\approx 0.52\%$ are close to the data in both $CP$-conserving and $CP$-violating cases. It is observed that the channel containing di-kaon states provides the major source of SU(3) breaking, which enhances $x(m_D^2)$ and $y(m_D^2)$ by four orders of magnitude relative to the perturbative results. We also predict the coefficient ratio $q/p$ involved in the charm mixing with $|q/p|-1\approx 2\times 10^{-4}$ and $Arg(q/p)\approx 6\times 10^{-3}$ degrees, which can be scrutinized by precise future measurements. The formalism is extended to studies of the $B_{s(d)}$ meson mixing and the kaon mixing, and the small deviations of the obtained width differences from the perturbative inputs explain why the above mixing can be understood via short-distance dynamics. We claim that the puzzling charm mixing is attributed to the strong Glashow-Iliopoulos-Maiani suppression on perturbative contributions, instead of to breakdown of the quark-hadron duality, which occurs only at 15\% level.
description: Journal version, 16 pages, 10 figures
Minimum guesswork discrimination between quantum states
Creators: name: Chen, Weien
name: Cao, Yongzhi
name: Wang, Hanpin
name: Feng, Yuan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Error probability is a popular and well-studied optimization criterion in discriminating non-orthogonal quantum states. It captures the threat from an adversary who can only query the actual state once. However, when the adversary is able to use a brute-force strategy to query the state, discrimination measurement with minimum error probability does not necessarily minimize the number of queries to get the actual state. In light of this, we take Massey's guesswork as the underlying optimization criterion and study the problem of minimum guesswork discrimination. We show that this problem can be reduced to a semidefinite programming problem. Necessary and sufficient conditions when a measurement achieves minimum guesswork are presented. We also reveal the relation between minimum guesswork and minimum error probability. We show that the two criteria generally disagree with each other, except for the special case with two states. Both upper and lower information-theoretic bounds on minimum guesswork are given. For geometrically uniform quantum states, we provide sufficient conditions when a measurement achieves minimum guesswork. Moreover, we give the necessary and sufficient condition under which making no measurement at all would be the optimal strategy.
description: 28 pages
Different roles of soluble CD40 ligand in central nervous system damage
Creators: name: Du, Li
name: Chang, Haoxiao
name: Wei, Yuzhen
name: Zhang, Xinghu
name: Yin, Linlin
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: Plant Biology
subject: FOS: Biological sciences

description: Backgroud and purpose: Soluble CD40 ligand (sCD40L) plays an important role in inflammation and autoimmune disorders. There is still a controversy regarding sCD40L in neuromyelitis optica spectrum disorders (NMOSD) and multiple sclerosis (MS). Herein the aims of this study were to evaluate the levels of sCD40L in patients with NMOSD, MS, and other noninflammatory neurological diseases; to investigate its potential relationship with laboratory parameters, glial fibrillary acidic protein (GFAP), thrombopoietin (TPO) and IL-6; and to address whether serum sCD40L levels in acute attacks of NMOSD patients were decreased after treatment with immunoglobulins, plasma exchange, or methylprednisolone.Materials and methods: We enrolled 13 patients with NMOSD, 9 patients with MS, and 9 patients with other noninflammatory neurological diseases. The levels of sCD40L, IL-6 were measured by cytokine multiplex assay. GFAP levels were measured by ELISA.Results: Both serum and cerebrospinal fluid (CSF) sCD40L levels were increased in NMOSD and MS. No differences were found in serum and CSF sCD40L levels between NMOSD and MS. The CSF sCD40L levels were positively correlated with the CSF cell counts in NMOSD, whereas serum sCD40L levels were positively correlated with the albumin index in MS. Furthermore, the levels of CSF sCD40L were positively correlated with CSF GFAP levels in NMOSD. Serum sCD40L levels were correlated with serum TPO levels in MS. No correlation was found between levels of sCD40L and IL-6 in NMOSD and MS. No statistically meaningful difference between NMOSD patients with or without immunotherapy. Conclusions: Our study suggests that sCD40L can contribute to the destruction of the blood-brain barrier in MS, whereas it may contribute to CNS inﬂammation in NMOSD. The serum sCD40L concentrations were not changed after treatment with immunoglobulins, plasma exchange, or methylprednisolone in acute attacks of NMOSD.
The singing arc: the oldest memristor?
Creators: name: Ginoux, Jean-Marc
name: Rossetto, Bruno
Publisher: name: arXiv
Year: 2014
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: On April 30th 2008, the journal Nature announced that the missing circuit element, postulated thirty-seven years before by Professor Leon O. Chua has been found. Thus, after the capacitor, the resistor and the inductor, the existence of a fourth fundamental element of electronic circuits called "memristor" was established. In order to point out the importance of such a discovery, the aim of this article is first to propose an overview of the manner with which the three others have been invented during the past centuries. Then, a comparison between the main properties of the singing arc, i.e. a forerunner device of the triode used in Wireless Telegraphy, and that of the memristor will enable to state that the singing arc could be considered as the oldest memristor.
State-feedback stabilization of Markov jump linear systems with randomly observed Markov states
Creators: name: Ogura, Masaki
name: Cetinkaya, Ahmet
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In this paper we study the state-feedback stabilization of a discrete-time Markov jump linear system when the observation of the Markov chain of the system, called the Markov state, is time-randomized by another Markov chain. Embedding the Markov state into an extended Markov chain, we transform the given system with time-randomized observations to another one having the enlarged Markov-state space but with so-called cluster observations of Markov states. Based on this transformation we propose linear matrix inequalities for designing stabilizing state-feedback gains for the original Markov jump linear systems. The proposed method can treat both periodic observations and many of renewal-type observations in a unified manner, which are studied in the literature using different approaches. A numerical example is provided to demonstrate the obtained result.
Light diffraction in all-optical time-varying metasurfaces
Creators: name: Tirole, Romain
Publisher: name: Imperial College London
Year: 2023

description: This thesis focuses on frequency control of optical waves using time-varying effects in nanophotonic media. Particularly, diffraction by a slit in time is demonstrated using ultrafast all-optical mirrors. We first demonstrate a large reflectivity change from an Indium Tin Oxide/Gold bilayer under optical pumping, at speeds high enough to observe time-varying effects. Then, treating the mirror as an interface, we show time-diffraction from the sample, corresponding to broadening and shifting of the spectrum of light reflected by the mirror during its modulation. This is clearly confirmed by a double slit diffraction experiment, replicating Young's experiment in time, with a generated spectrum exhibiting oscillations in frequency. Insights on the electron dynamics within Indium Tin Oxide is gained, with in particular a striking shortening of the permittivity modulation rise time unlocking the access to an even lower timescale for time-varying effects. Finally, time-varying effects on harmonic generation from Indium Tin Oxide and Gallium Phosphide thin films are demonstrated, exhibiting strong temporal refraction and new mechanisms for temporal modulation.
Modeling the induction, thrust, and power of a yaw misaligned actuator disk
Creators: name: Heck, Kirby S.
name: Johlas, Hannah M.
name: Howland, Michael F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Collective wind farm flow control, where wind turbines are operated in an individually suboptimal strategy to benefit the aggregate farm, has demonstrated potential to reduce wake interactions and increase farm energy production. However, existing wake models used for flow control often estimate the thrust and power of yaw misaligned turbines using simplified empirical expressions which require expensive calibration data and do not accurately extrapolate between turbine models. The thrust, wake velocity deficit, wake deflection, and power of a yawed wind turbine depend on its induced velocity. Here, we extend classical one-dimensional momentum theory to model the induction of a yaw misaligned actuator disk. Analytical expressions for the induction, thrust, initial wake velocities, and power are developed as a function of the yaw angle and thrust coefficient. The analytical model is validated against large eddy simulations of a yawed actuator disk. Because the induction depends on the yaw and thrust coefficient, the power generated by a yawed actuator disk will always be greater than a $\cos^3(γ)$ model suggests, where $γ$ is yaw. The power lost by yaw depends on the thrust coefficient. An analytical expression for the thrust coefficient that maximizes power, depending on the yaw, is developed and validated. Finally, using the developed induction model as an initial condition for a turbulent far-wake model, we demonstrate how combining wake steering and thrust (induction) control can increase array power, compared to either independent steering or induction control, due to the joint dependence of the induction on the thrust coefficient and yaw angle.
description: 22 pages, 9 figures
The effect of zinc supplementation in children with attention deficit hyperactivity disorder: A systematic review and dose-response meta‑analysis of randomized clinical trials
Creators: name: Talebi, Sepide
name: Miraghajani, Maryam
name: Ghavami, Abed
name: Mohammadi, Hamed
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: The present systematic review and dose-response meta-analysis was conducted to quantify the efficacy of zinc supplementation on clinical symptoms of attention-deficit/hyperactivity disorder (ADHD) in children. Electronic databases including PubMed, Scopus, ISI web of science, and Google Scholar were searched until January 2021. Results were reported as standardized mean difference (SMD) with a 95% confidence interval (CI) using Hedges's adjusted g method. six randomized clinical trials with 489 school-aged children were identified for the meta-analysis. Our findings showed a significant effect of zinc supplementation on ADHD total scores (SMD: −0.62 Hedges' g; 95% CI: −1.24 to −0.002, p = 0.04) but not in hyperactivity scores (SMD: −0.93 Hedges' g; 95% CI: −3.31 to 1.45, p = 0.44) and inattention scores (SMD: 0.21 Hedges' g; 95% CI: −0.09 to 0.51, p = 0.17) compared to the control group. Besides, the dose-response analysis did not find any significant non-linear association between zinc supplementation dosage or duration on ADHD total scores. The certainty of the evidence was rated moderate to very low for all outcomes. Zinc supplementation may have beneficial effects in improving ADHD symptoms in children with ADHD. Future well‐designed, large‐scale randomized controlled trials are needed to establish the benefit of zinc supplementation for ADHD.