cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ready, but challenged:
Creators: name: Gjerding, Allan Næs
name: Holm, Jacob Rubæk
name: Lorenz, Edward
name: Stamhus, Jørgen
Publisher: name: Journal of Business Models
Year: 2020

description: This working paper explores the diffusion and effects of artificial intelligence and robotics on work organization and skills formation in Danish private and public companies. The main focus is on how humans and technology interact, the extent to which employees have the skills to engage in this interaction, and the interplay between job content and technology. The main findings are the following: Artificial intelligence is more diffused and diffuses more rapidly than robotics, and this diffusion is uneven across Danish regions; Danish employees are very confident in using artificial intelligence and robotics, but half of the employees lack the necessary skills; skills are to an important extent acquired through on-the-job learning, which are insufficient in the long run; artificial intelligence involves a larger variety of learning than robotics and has a greater impact on tasks and work organization. The working paper con-cludes with recommendations for policy and management. Important recommendations are that there is a need for policy makers to focus on developing new formal education and training and to innovate existing education in order to ready current and future em-ployees for technological change, and that management needs to focus more on continuous development of their human capital. Lifelong learning and strategic human resource management become increasingly important.
description: Journal of Business Models, Vol. 1 No. 001 (2020): Working Papers
Modeling of thermal and non-thermal radio emission from HH80-81 jet
Creators: name: Mohan, Sreelekshmi
name: Vig, Sarita
name: Mandal, Samir
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Protostellar jets are one of the primary signposts of star formation. A handful of protostellar objects exhibit radio emission from ionized jets, of which a few display negative spectral indices, indicating the presence of synchrotron emission. In this study, we characterize the radio spectra of HH80-81 jet with the help of a numerical model that we have developed earlier, which takes into account both thermal free-free and non-thermal synchrotron emission mechanisms. For modeling the HH80-81 jet, we consider jet emission towards the central region close to the driving source along with two Herbig-Haro objects, HH80 and HH81. We have obtained the best-fit parameters for each of these sources by fitting the model to radio observational data corresponding to two frequency windows taken across two epochs. Considering an electron number density in the range $10^3 - 10^5$ cm$^{-3}$, we obtained the thickness of the jet edges and fraction of relativistic electrons that contribute to non-thermal emission in the range $0.01^{\circ} - 0.1^{\circ}$ and $10^{-7} - 10^{-4}$, respectively. For the best-fit parameter sets, the model spectral indices lie in the range of -0.15 to +0.11 within the observed frequency windows.
description: 14 pages, 6 figures, Accepted for publication in the Journal of Astrophysics and Astronomy
Weakly complex homogeneous spaces
Creators: name: Moroianu, Andrei
name: Semmelmann, Uwe
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 32Q60, 57R20, 53C26, 53C35, 53C15

description: We complete our recent classification of compact inner symmetric spaces with weakly complex tangent bundle by filling up a case which was left open, and extend this classification to the larger category of compact homogeneous spaces with positive Euler characteristic. We show that a simply connected compact equal rank homogeneous space has weakly complex tangent bundle if and only if it is a product of compact equal rank homogeneous spaces which either carry an invariant almost complex structure (and are classified by Hermann), or have stably trivial tangent bundle (and are classified by Singhof and Wemmer), or belong to an explicit list of weakly complex spaces which have neither stably trivial tangent bundle, nor carry invariant almost complex structures.
description: 16 pages
Heat conduction: hyperbolic self-similar shock-waves in solids
Creators: name: Barna, Imre Ferenc
name: Kersner, Robert
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Analytic solutions for cylindrical thermal waves in solid medium is given based on the nonlinear hyperbolic system of heat flux relaxation and energy conservation equations. The Fourier-Cattaneo phenomenological law is generalized where the relaxation time and heat propagation coefficient have a general power law temperature dependence. From such laws one cannot form a second order parabolic or telegraph-type equation. We consider the original non-linear hyperbolic system itself with the self-similar Ansatz for the temperature distribution and for the heat flux. As results continuous and shock-wave solutions are presented. For physical establishment numerous materials with various temperature dependent heat conduction coefficients are mentioned.
description: 5 pages, 2 figures, the manuscript is submitted to Eur. Phys. Letters
Laplace-difference equation for integrated correlators of operators with general charges in $\mathcal{N}=4$ SYM
Creators: name: Brown, Augustus
name: Wen, Congkao
name: Xie, Haitian
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the integrated correlators associated with four-point correlation functions $\langle \mathcal{O}_2\mathcal{O}_2\mathcal{O}^{(i)}_p \mathcal{O}^{(j)}_p \rangle$ in four-dimensional $\mathcal{N}=4$ supersymmetric Yang-Mills theory (SYM) with $SU(N)$ gauge group, where $\mathcal{O}^{(i)}_p$ is a superconformal primary with charge (or dimension) $p$ and the superscript $i$ represents possible degeneracy. These integrated correlators are defined by integrating out spacetime dependence with a certain integration measure, and they can be computed via supersymmetric localisation. They are modular functions of complexified Yang-Mills coupling $τ$. We show that the localisation computation is systematised by appropriately reorganising the operators. After this reorganisation of the operators, we prove that all the integrated correlators for any $N$, with some crucial normalisation factor, satisfy a universal Laplace-difference equation (with the laplacian defined on the $τ$-plane) that relates integrated correlators of operators with different charges. This Laplace-difference equation is a recursion relation that completely determines all the integrated correlators, once the initial conditions are given.
description: 30 pages; v2: references added, typos corrected; v3: typos corrected, version published in JHEP
On the BH-galaxy relation of AGN and Narrow Line Seyfert 1 Galaxies
Creators: name: Wandel, Amri
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Massive black holes (BHs) are detected in the centers of many nearby galaxies are linearly correlated with the luminosity of the host bulge (spheroid), the black hole mass being about 0.1% of the stellar mass. In active galaxies, the BH mass is best measured by the reverberation mapping (light echo) technique. We and others have shown that in AGNs the BH mass follows the same relation with the luminosity of the host galaxy as in ordinary (inactive) galaxies, with the exception of narrow line AGNs which apparently have significantly lower values of the BH/bulge mass (or BH/bulge luminosity) ratio. The BH/bulge ratio is also found to be strongly correlated with the velocity dispersion of the broad line-emitting gas in the active nucleus. However, in the BH-stellar velocity relation the difference between broad- and narrow-line AGNs (in particular NLS1s) seems to be less obvious. We review the subject adding recent updates and suggestions.
description: 9 pages, 6 figures, Narrow-Line Seyfert 1 Galaxies and Their Place in the Universe (NLS1 Milan, Italy)
A [3]-catenane non-autonomous molecular motor model: geometric phase, no-pumping theorem, and energy transduction
Creators: name: Bilancioni, Massimo
name: Esposito, Massimiliano
name: Penocchio, Emanuele
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a model of synthetic molecular motor - a [3]-catenane consisting of two small macrocycles mechanically interlocked with a bigger one - subjected to a time-dependent driving using stochastic thermodynamics. The model presents nontrivial features due to the two interacting small macrocycles, but is simple enough to be treated analytically in limiting regimes. Among the results obtained, we find a mapping into an equivalent [2]-catenane that reveals the implications of the no-pumping theorem stating that to generate net motion of the small macrocycles, both energies and barriers need to change. In the adiabatic limit (slow driving), we fully characterize the motor's dynamics and show that the net motion of the small macrocycles is expressed as a surface integral in parameter space which corrects previous erroneous results. We also analyze the performance of the motor subjected to a step-wise driving protocols in absence and in presence of an applied load. Optimization strategies for generating large currents and maximizing free-energy transduction are proposed. This simple model provides interesting clues into the working principles of non-autonomous molecular motors and their optimization.
description: 14 pages, 5 figures
Unveiling the gravitationally unstable disc of a massive star-forming galaxy using NOEMA and MUSE
Creators: name: Puschnig, Johannes
name: Hayes, Matthew
name: Agertz, Oscar
name: Emsellem, Eric
name: Cannon, John M.
name: Reste, Alexandra Le
name: Melinder, Jens
name: Östlin, Göran
name: Herenz, Christian
name: Menacho, Veronica
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using new high-resolution data of CO (2-1), H-alpha and H-beta obtained with the Northern Extended Millimeter Array (NOEMA) and the Multi-Unit Spectroscopic Explorer (MUSE) at the Very Large Telescope, we have performed a Toomre-Q disc stability analysis and studied star formation, gas depletion times and other environmental parameters on sub-kpc scales within the z~0 galaxy SDSS J125013.84+073444.5 (LARS 8). The galaxy hosts a massive, clumpy disc and is a proto-typical analogue of main-sequence galaxies at z~1-2. We show that the massive (molecular) clumps in LARS 8 are the result of an extremely gravitationally unstable gas disc, with large scale instabilities found across the whole extent of the rotating disc, with only the innermost 500 pc being stabilized by its bulgelike structure. The radial profiles further reveal that - contrary to typical disc galaxies - the molecular gas depletion time decreases from more than 1 Gyr in the center to less than ~100 Myr in the outskirts of the disc, supporting the findings of a Toomre-unstable disc. We further identified and analysed 12 individual massive molecular clumps. They are virialized and follow the mass-size relation, indicating that on local (cloud/clump) scales the stars form with efficiencies comparable to those in Milky Way clouds. The observed high star formation rate must thus be the result of triggering of cloud/clump formation over large scales due to disc instability. Our study provides evidence that "in-situ" massive clump formation (as also observed at high redshifts) is very efficiently induced by large-scale instabilities.
description: Submitted to MNRAS
Study of the conformal hyperscaling relation through the Schwinger-Dyson equation
Creators: name: Aoki, Yasumichi
name: Aoyama, Tatsumi
name: Kurachi, Masafumi
name: Maskawa, Toshihide
name: Nagai, Kei-ichi
name: Ohki, Hiroshi
name: Shibata, Akihiro
name: Yamawaki, Koichi
name: Yamazaki, Takeshi
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study corrections to the conformal hyperscaling relation in the conformal window of the large Nf QCD by using the ladder Schwinger-Dyson (SD) equation as a concrete dynamical model. From the analytical expression of the solution of the ladder SD equation, we identify the form of the leading mass correction to the hyperscaling relation. We find that the anomalous dimension, when identified through the hyperscaling relation neglecting these corrections, yields a value substantially lower than the one at the fixed point γ_m^* for large mass region. We further study finite-volume effects on the hyperscaling relation, based on the ladder SD equation in a finite space-time with the periodic boundary condition. We find that the finite-volume corrections on the hyperscaling relation are negligible compared with the mass correction. The anomalous dimension, when identified through the finite-size hyperscaling relation neglecting the mass corrections as is often done in the lattice analyses, yields almost the same value as that in the case of the infinite space-time neglecting the mass correction, i.e., a substantially lower value than γ_m^* for large mass. We also apply the finite-volume SD equation to the chiral-symmetry-breaking phase and find that when the theory is close to the critical point such that the dynamically generated mass is much smaller than the explicit breaking mass, the finite-size hyperscaling relation is still operative. We also suggest a concrete form of the modification of the finite-size hyperscaling relation by including the mass correction, which may be useful to analyze the lattice data.
description: 17 pages, 9 figures
ВОПРОСЫ УПРАВЛЕНИЯ ПРОЦЕССОМ ВОСПИТАНИЯ ДЕТЕЙ ДОШКОЛЬНОГО ВОЗРАСТА
Creators: name: Хужаназарова, Наргиза
name: Мадаминова, Насиба
name: Алижонова, Гуласал
Publisher: name: Zenodo
Year: 2023

description: В статье представлены некоторые вопросы целенаправленного формирования личности человека предполагает ее проектирование, но не основе общего для всех людей шаблона, а в соответствии с индивидуальным для каждого человека проектом, учитывающим его конкретные физиологические и психологические особенности.
Three lectures on global boundary conditions and the theory of self--adjoint extensions of the covariant Laplace--Beltrami and Dirac operators on Riemannian manifolds with boundary
Creators: name: Ibort, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In these three lectures we will discuss some fundamental aspects of the theory of self-adjoint extensions of the covariant Laplace-Beltrami and Dirac operators on compact Riemannian manifolds with smooth boundary emphasizing the relation with the theory of global boundary conditions. Self-adjoint extensions of symmetric operators, specially of the Laplace-Beltrami and Dirac operators, are fundamental in Quantum Physics as they determine either the energy of quantum systems and/or their unitary evolution. The well-known von Neumann's theory of self-adjoint extensions of symmetric operators is not always easily applicable to differential operators, while the description of extensions in terms of boundary conditions constitutes a more natural approach. Thus an effort is done in offering a description of self-adjoint extensions in terms of global boundary conditions showing how an important family of self-adjoint extensions for the Laplace-Beltrami and Dirac operators are easily describable in this way. Moreover boundary conditions play in most cases an significant physical role and give rise to important physical phenomena like the Casimir effect. The geometrical and topological structure of the space of global boundary conditions determining regular self-adjoint extensions for these fundamental differential operators is described. It is shown that there is a natural homology class dual of the Maslov class of the space. A new feature of the theory that is succinctly presented here is the relation between topology change on the system and the topology of the space of self-adjoint extensions of its Hamiltonian. Some examples will be commented and the one-dimensional case will be thoroughly discussed.
description: Proceedings of XXIFWGP 2012; Classifications: 02.30.Tb, 02.40.Vh, 03.65.-w, 03.65.Db
Αξιολόγηση μαθητή και απελευθερωτική αγωγή
Creators: name: Μαστορέκας, Αλέξανδρος Θεόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Αξιολόγηση
Απελευθέρωση
Αγωγή
Assessment
Liberation
Education

description: Η εργασία με τη μέθοδο της βιβλιογραφικής επισκόπησης θα εξετάσει τα κείμενα του Βραζιλιάνου παιδαγωγού Paulo Freire (1921-1997), καθώς και άλλων συγγραφέων που βασίζονται στις αρχές του, για να αναδείξει, να παρουσιάσει και να ερμηνεύσει την αντίληψη και την πρόταση της Απελευθερωτικής αγωγής για την Αξιολόγηση του μαθητή. Πρόκειται για μια ηθική, δημοκρατική και συμμετοχική διαδικασία κατά την οποία παιδιά και νέοι αντιμετωπίζονται με έναν ολιστικό τρόπο, καθώς οι γνωστικές, οι συναισθηματικές και οι πνευματικές πτυχές του ανθρώπου είναι αδιαχώριστες. Είναι η αξιολόγηση που υπερβαίνει τη χρήση αριθμών από το 0 ως το 10, για να προσδιορίσει την πρόοδο των μαθητών. Γιατί σκοπός της είναι να υποστηρίξει και να βοηθήσει τους μαθητές να συνειδητοποιήσουν «πόσο προσέγγισαν τους στόχους τους και να τους γεμίσει αυτοπεποίθηση να προχωρήσουν περαιτέρω».
description: The work with the method of bibliographic review will examine the texts of the Brazilian educator Paulo Freire (1921-1997), as well as other writers based on his principles, in order to highlight, present and interpret the concept and proposition of Liberation Education for the assessment of the student. It is an ethical, democratic and participatory process in which children and young people are treated in a holistic way, as the cognitive, emotional and spiritual aspects of the human being are inseparable. It is assessment that goes beyond the use of numbers from 0 to 10 to determine student progress. Because its purpose is to support and help students realize "how close they have come to their goals and fill them with confidence to go further"
Environmental Regulations and Technological Change: Pulp and Paper Mills and EPA’s Cluster Rule
Creators: name: Belova, Anna
name: Casey, Brendan
name: Morgan, Cynthia
name: Pasurka, Carl
name: Shadbegian, Ron
name: Belova, Anna
name: Casey, Brendan
name: Morgan, Cynthia
name: Pasurka, Carl
name: Shadbegian, Ron
Publisher: name: Unknown
Year: 2020
Subjects: subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: Resource /Energy Economics and Policy
subject: technological change
subject: pulp and paper mills
subject: Cluster Rule
subject: pollution abatement costs
subject: abatement intensity

description: In this paper we propose a new model to calculate changes in pollution abatement costs (PAC) when data on bad outputs and information on the cost of inputs assigned to pollution abatement activities are not available. To calculate the PAC of reducing bad output, we introduce a measure of abatement intensity that captures variation in the technologies used to reduce water discharges. We then decompose the change in PAC into three components to identify their relative contribution to changes in PAC: (1) changes in the level of inputs, (2) technological change, and (3) changes in pollution abatement intensity. These three components are estimated using data from 1997 to 2007 on a sample of pulp mills required to comply with effluent limits of the U.S. EPA’s Cluster Rule. We find technological change is consistently associated with declining PAC, while both changes in inputs and abatement intensity are associated with increasing PAC.
Onsager coefficients in a coupled-transport model displaying a condensation transition
Creators: name: Iubini, Stefano
name: Politi, Antonio
name: Politi, Paolo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study nonequilibrium steady states of a one-dimensional stochastic model, originally introduced as an approximation of the Discrete Nonlinear Schrödinger equation. This model is characterized by two conserved quantities, namely mass and energy; it displays a ``normal", homogeneous phase, separated by a condensed (negative-temperature) phase, where a macroscopic fraction of energy is localized on a single lattice site. When steadily maintained out of equilibrium by external reservoirs, the system exhibits coupled transport herein studied within the framework of linear response theory. We find that the Onsager coefficients satisfy an exact scaling relationship, which allows reducing their dependence on the thermodynamic variables to that on the energy density for unitary mass density. We also determine the structure of the nonequilibrium steady states in proximity of the critical line, proving the existence of paths which partially enter the condensed region. This phenomenon is a consequence of the Joule effect: the temperature increase induced by the mass current is so strong as to drive the system to negative temperatures. Finally, since the model attains a diverging temperature at finite energy, in such a limit the energy-mass conversion efficiency reaches the ideal Carnot value.
description: 25 pages, 13 figures
Auto-AVSR: Audio-Visual Speech Recognition with Automatic Labels
Creators: name: Ma, Pingchuan
name: Haliassos, Alexandros
name: Fernandez-Lopez, Adriana
name: Chen, Honglie
name: Petridis, Stavros
name: Pantic, Maja
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Audio-visual speech recognition has received a lot of attention due to its robustness against acoustic noise. Recently, the performance of automatic, visual, and audio-visual speech recognition (ASR, VSR, and AV-ASR, respectively) has been substantially improved, mainly due to the use of larger models and training sets. However, accurate labelling of datasets is time-consuming and expensive. Hence, in this work, we investigate the use of automatically-generated transcriptions of unlabelled datasets to increase the training set size. For this purpose, we use publicly-available pre-trained ASR models to automatically transcribe unlabelled datasets such as AVSpeech and VoxCeleb2. Then, we train ASR, VSR and AV-ASR models on the augmented training set, which consists of the LRS2 and LRS3 datasets as well as the additional automatically-transcribed data. We demonstrate that increasing the size of the training set, a recent trend in the literature, leads to reduced WER despite using noisy transcriptions. The proposed model achieves new state-of-the-art performance on AV-ASR on LRS2 and LRS3. In particular, it achieves a WER of 0.9% on LRS3, a relative improvement of 30% over the current state-of-the-art approach, and outperforms methods that have been trained on non-publicly available datasets with 26 times more training data.
description: Accepted to ICASSP 2023
Study on Obsessive Compulsive Phenomenology in a Sample of Egyptian Adolescent Population
Creators: name: Rady, Ahmed
name: Salama, Hoda
name: Mervat Wagdy
name: Ketat, Ahmed
Publisher: name: Zenodo
Year: 2021
Subjects: Obsession
compulsion
OCD
phenomenology
prevalence

description: Background and Objectives: Obsessive symptoms among children and adolescent age groups are increasing, according to mental health professionals who work with this age group. The goal of our epidemiological study was to determine the prevalence of obsessive symptoms, obsessive compulsive disorder, and the various obsessive compulsive components among secondary school students. Methods: The study is cross-sectional and involved 1299 secondary school students; the sample size was determined based on an estimated Obsessive Compulsive Disorder (OCD) prevalence of 2% in literature. Equal samples were taken from each of Alexandria Governorate's three educational zones. The Arabic version of the Lyeton obsessive inventory child version LOI-CV was used to evaluate obsessive compulsive symptoms. The Mini International Neuropsychiatric Interview for Children MINI-KID Arabic was administered to students who scored higher than 35.Patients with OCD who were identified by MINI-KID underwent a psychiatric interview to ensure that they met the criteria of OCD according to DSM IV –TR criteria. A standardised questionnaire was used to examine various obsessive compulsive symptoms. Results: Among the studied sample (n = 1299), 201 students scored > 35 on LOI-CV i.e. 15.5% of the total sample have OCS. The prevalence of OCD was 2.2 % in the study sample, with 29 students from the OCS students meeting DSM-IV TR diagnostic criteria for OCD. Excessive conscience (65.5%), blasphemy (55.2%), repeated words (51.7%), and sexual obsessions (48.2%) were the most common obsessive symptoms. Conclusions: The adolescent age group has a significant prevalence of obsessive compulsive symptoms. To better comprehend obsessive phenomenology, cultural effect should be explored, emphasising the importance of OCD research from a transcultural perspective. Early detection and management may be aided by public awareness and screening in the high school population.
SAC21 Conversational AI supplementary material
Creators: name: Strüber, Daniel
Publisher: name: figshare
Year: 2020
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences
subject: 80309 Software Engineering

description: Includes the feature matrix and further supplementary information for the SAC21 paper "A Maturity Assessment Framework for Conversational AI Development Platforms"
Hard-Thermal-Loop Corrections in Leptogenesis II: Solving the Boltzmann Equations
Creators: name: Kiessig, Clemens
name: Plumacher, Michael
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate hard-thermal-loop (HTL) corrections to the final lepton asymmetry in leptogenesis. To this end we solve the Boltzmann equations with HTL-corrected rates and CP asymmetries, which we calculated in paper I of this series. We pay special attention to the influence of the two leptonic quasiparticles that arise at non-zero temperature. We include only decays and inverse decays and allow for the lepton modes to be either decoupled from each other, or to be in chemical equilibrium by some strong interaction, simulating the interaction with gauge bosons. In two additional cases, we approximate the full HTL lepton propagators with zero-temperature propagators, where we replace the zero-temperature mass by the thermal mass of the leptons $m_\ell(T)$ or the asymptotic mass $\sqrt{2} \, m_\ell(T)$. We compare the final lepton asymmetries of the four thermal cases and the zero-temperature case for zero, thermal and dominant initial neutrino abundance. The final lepton asymmetries of the thermal cases differ considerably from the vacuum case and from each other in the weak washout regime for zero initial neutrino abundance and in the intermediate regime for dominant initial neutrino abundance. In the strong washout regime, the final lepton asymmetry can be enhanced by a factor of two in the case of strongly interacting lepton modes.
description: 51 pages, 27 figures
Annual variations in circulating thyroid hormones in the brook trout, Salvelinus Fontinalis (Mitchill)
Creators: name: White, Bruce Alan
Publisher: name: University of Calgary
Year: 1976
Subjects: subject: QL 638 S2 W46 1976 Microfiche
subject: Trout
subject: Thyroid hormones

description: Bibliography: p. 66-75.
Distributed Memory, GPU Accelerated Fock Construction for Hybrid, Gaussian Basis Density Functional Theory
Creators: name: Williams-Young, David B.
name: Asadchev, Andrey
name: Popovici, Doru Thom
name: Clark, David
name: Waldrop, Johnathan
name: Windus, Theresa
name: Valeev, Edward F.
name: de Jong, Wibe A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: With the growing reliance of modern supercomputers on accelerator-based architectures such a GPUs, the development and optimization of electronic structure methods to exploit these massively parallel resources has become a recent priority. While significant strides have been made in the development of GPU accelerated, distributed memory algorithms for many-body (e.g. coupled-cluster) and spectral single-body (e.g. planewave, real-space and finite-element density functional theory [DFT]), the vast majority of GPU-accelerated Gaussian atomic orbital methods have focused on shared memory systems with only a handful of examples pursuing massive parallelism on distributed memory GPU architectures. In the present work, we present a set of distributed memory algorithms for the evaluation of the Coulomb and exact-exchange matrices for hybrid Kohn-Sham DFT with Gaussian basis sets via direct density-fitted (DF-J-Engine) and seminumerical (sn-K) methods, respectively. The absolute performance and strong scalability of the developed methods are demonstrated on systems ranging from a few hundred to over one thousand atoms using up to 128 NVIDIA A100 GPUs on the Perlmutter supercomputer.
description: 45 pages, 9 figures
Formation and long-term evolution of 3D vortices in protoplanetary discs
Creators: name: Meheut, H.
name: Keppens, R.
name: Casse, F.
name: Benz, W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In the context of planet formation, anticyclonic vortices have recently received lots of attention for the role they can play in planetesimals formation. Radial migration of intermediate size solids toward the central star may prevent their growth to larger solid grains. On the other hand, vortices can trap the dust and accelerate this growth, counteracting fast radial transport. Multiple effects have been shown to affect this scenario, such as vortex migration or decay. The aim of this paper is to study the formation of vortices by the Rossby wave instability and their long term evolution in a full three dimensional protoplanetary disc. We use a robust numerical scheme combined with adaptive mesh refinement in cylindrical coordinates, allowing to affordably compute long term 3D evolutions. We consider a full disc stratified both radially and vertically that is prone to formation of vortices by the Rossby wave instability. We show that the 3D Rossby vortices grow and survive over hundreds of years without migration. The localized overdensity which initiated the instability and vortex formation survives the growth of the Rossby wave instability for very long times. When the vortices are no longer sustained by the Rossby wave instability, their shape changes toward more elliptical vortices. This allows them to survive shear-driven destruction, but they may be prone to elliptical instability and slow decay. When the conditions for growing Rossby wave-related instabilities are maintained in the disc, large-scale vortices can survive over very long timescales and may be able to concentrate solids.
description: Accepted for publication in A&A
The Kelvin-Helmholtz instability in weakly ionised plasmas: Ambipolar dominated and Hall dominated flows
Creators: name: Jones, Aoife C.
name: Downes, Turlough P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Kelvin-Helmholtz instability is well known to be capable of converting well-ordered flows into more disordered, even turbulent, flows. As such it could represent a path by which the energy in, for example, bowshocks from stellar jets could be converted into turbulent energy thereby driving molecular cloud turbulence. We present the results of a suite of fully multifluid magnetohydrodynamic simulations of this instability using the HYDRA code. We investigate the behaviour of the instability in a Hall dominated and an ambipolar diffusion dominated plasma as might be expected in certain regions of accretion disks and molecular clouds respectively. We find that, while the linear growth rates of the instability are unaffected by multifluid effects, the non-linear behaviour is remarkably different with ambipolar diffusion removing large quantities of magnetic energy while the Hall effect, if strong enough, introduces a dynamo effect which leads to continuing strong growth of the magnetic field well into the non-linear regime and a lack of true saturation of the instability.
description: 12 pages, 20 figures. Accepted for publication in MNRAS
3D LTE spectral line formation with scattering in red giant stars
Creators: name: Hayek, W.
name: Asplund, M.
name: Collet, R.
name: Nordlund, Å.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate the effects of coherent isotropic continuum scattering on the formation of spectral lines in local thermodynamic equilibrium (LTE) using 3D hydrodynamical and 1D hydrostatic model atmospheres of red giant stars. Continuum flux levels, spectral line profiles and curves of growth for different species are compared with calculations that treat scattering as absorption. Photons may escape from deeper, hotter layers through scattering, resulting in significantly higher continuum flux levels beneath a wavelength of 5000 A. The magnitude of the effect is determined by the importance of scattering opacity with respect to absorption opacity; we observe the largest changes in continuum flux at the shortest wavelengths and lowest metallicities; intergranular lanes of 3D models are more strongly affected than granules. Continuum scattering acts to increase the profile depth of LTE lines: continua gain more brightness than line cores due to their larger thermalization depth in hotter layers. We thus observe the strongest changes in line depth for high-excitation species and ionized species, which contribute significantly to photon thermalization through their absorption opacity near the continuum optical surface. Scattering desaturates the line profiles, leading to larger abundance corrections for stronger lines, which reach -0.5 dex at 3000 A for Fe II lines in 3D with excitation potential 2 eV at [Fe/H]=-3.0. The corrections are less severe for low-excitation lines, longer wavelengths, and higher metallicity. Velocity fields increase the effects of scattering by separating emission from granules and intergranular lanes in wavelength. 1D calculations exhibit similar scattering abundance corrections for weak lines, but those for strong lines are generally smaller compared to 3D models and depend on the choice of microturbulence.
description: Astronomy & Astrophysics, Volume 529, 05/2011
Exact $\mathcal{N}=2^{*}$ Schur line defect correlators
Creators: name: Hatsuda, Yasuyuki
name: Okazaki, Tadashi
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the Schur line defect correlation functions in $\mathcal{N}=4$ and $\mathcal{N}=2^*$ $U(N)$ super Yang-Mills (SYM) theory. We find exact closed-form formulae of the correlation functions of the Wilson line operators in the fundamental, antisymmetric and symmetric representations via the Fermi-gas method in the canonical and grand canonical ensembles. All the Schur line defect correlators are shown to be expressible in terms of multiple series that generalizes the Kronecker theta function. From the large $N$ correlators we obtain generating functions for the spectra of the D5-brane giant and the D3-brane dual giant and find a correspondence between the fluctuation modes and the plane partition diamonds.
description: 77 pages, 3 figures, v2: published version in JHEP
Mapping Research Topics of Determinants and Influence of Debt to Asset Ratio (DAR) in Banking: VOSviewer Bibliometric Study and Literature Review
Creators: name: Budianto, Eka Wahyu Hestya
name: Dewi, Nindi Dwi Tetria
Publisher: name: Zenodo
Year: 2023

description: Using the Debt to Asset Ratio (DAR) ratio is important in making bank strategic decisions, such as setting credit growth targets, debt restructuring, and determining dividend policies. This study aims to determine the research mapping regarding the Debt to Asset Ratio (DAR) ratio in Islamic and Conventional Banking using a mix-method approach, namely the VOSviewer bibliometric study and literature review. Data analysis techniques include: (1) mapping the distribution of journal publications around the DAR ratio; (2) mapping the results of the VOSviewer bibliometric visualization around the DAR ratio based on the number of clusters and their items; and (3) mapping research topics around the DAR ratio using a literature review study. The results showed that: (1) based on the distribution of journal publications, there were 235 journal publications regarding the DAR ratio; (2) based on the mapping of the VOSviewer bibliometric study, the network visualization results around the DAR ratio are divided into 6 clusters and 1 71 topic items; (3) based on the mapping of literature review studies, there are 28 topics around the influence of the DAR ratio and 1 2 topics about the determinants of the DAR ratio. The implications and contributions of this research are to map research topics around DAR ratios in Islamic and Conventional Banking which are often or rarely researched by researchers so that they can be a reference for subsequent researchers.
"A hole in a paper sky" : Pirandello, Baudelaire and the crisis of representation in modernism
Creators: name: Beard, Lauren
Publisher: name: University of British Columbia
Year: 2009

description: In this paper I investigate the ways in which Luigi Pirandello and Charles Baudelaire, as modernist authors, articulate and respond to the crisis of representation in modernism. Modernism is an aesthetic period governed by a series of crises, including the crisis of the general or metanarrative, the crisis of experience, and the crisis of history. These crises are tied to a Christian theological breakdown in which transcendence no longer gives purpose to immanence. In this paper I investigate the ways in which the crises that define modernism effect representation. I examine the way that allegory changes in modernism, and the way that Pirandello and Baudelaire both record and respond to the crisis of representation. Without a Christian theological metanarrative or general, allegory in modernism ceases to function as it did in previous eras. This aesthetic crisis also has a psycho-social dimension in the realm of subjectivity. The modernist subject becomes more uncertain, more reflective, and more “pensive.” This “pensive” subject is an individual anxiously coping with the crises of modernity. The pensive subject sees life and experience as fragmented, and schemes or metanarratives that would organize the world as tentative at best. Walter Benjamin, in The Origin of German Tragic Drama, distinguishes allegory from symbol by describing it as a relationship between a general concept and the particularity of lived experience. Benjamin refers to Johann Wolfgang von Goethe, whose concept of the symbol provides the fullness of immediate experience, whereas the notion of allegory requires mediation and process to derive meaning. The symbolic understanding of the world is what is lost in modernism; instead, a fractured form of allegory is what remains, leading to the creation of a new subjectivity. The transition to an allegorical style of writing marks the onset of modernism in literature. Pirandello sees allegory as a mode that is broken, and no longer functions for the modern world. Baudelaire observes this problem and tries to rehabilitate the mode. In this way, Baudelaire in a sense responds to the crisis outlined by Pirandello.
INTELLEKTUAL MULK QONUNCHILIGIDA ISTEʼMOLCHILAR HUQUQLARINI HIMOYA QILISH MASALALARI
Creators: name: Togʻaymurodova, Baxtigul
Publisher: name: Zenodo
Year: 2023

description: Intellektual mulk huquqlarining samarali va muvozanatli himoya tizimi bugungi kunning asosiy elementi hisoblanib, butun dunyodagi davlatlarning iqtisodiy o'sishi va farovonligining kafolatidir. Mazkur maqolada ushbu amaliyotning xorij tajribasi ko`rib chiqiladi.
Microgrid MV DCCB 5 kV prototype (designed and laboratory tested)
Creators: name: Hátsági, Bence
name: Nee, Simon
name: Norrga, Staffan
name: Modeer, Tomas
Publisher: name: Zenodo
Year: 2021
Subjects: VARC
Fast circuit breaker
Breaker protoype
Microgrid CB
Deliverable
European Union (EU)
H2020
Project
HYPERRIDE
GA 957788

description: Deliverable D3.7 of the HYPERRIDE project is a demonstration and laboratory testing of a 5 kV DC circuit breaker prototype. This report records the work done in order to achieve this goal. The requirements on the prototype’s current interruption capabilities are outlined in another task of the HYPERRIDE project and are dependent on the grid to be protected, i.e., the Medium Voltage Direct Current (MVDC) grid of RWTH Aachen. A circuit breaker based on the Voltage source converter Assisted Resonant Current (VARC) principle has been designed to meet these requirements. The VARC breaking process uses an active current injection method where a Voltage Source Converter (VSC) excites the resonant branch of the circuit breaker to produce a resonant current through the main interrupter of the breaker. The resonant current counters the line current and the net current flowing through the main interrupter momentarily becomes zero. The current to be interrupted is commutated into an energy absorbing branch of the circuit breaker where the magnetic energy stored in the protected line is dissipated. This branch also clamps the voltage across the main interrupter. This report documents the circuit breaker prototype setup and the relevant current interruption tests. Relevant details (such as largest interrupted current, breaker operation time and fault current suppression time) are also discussed. It is concluded that a functioning circuit breaker prototype suitable for protecting the Aachen MVDC grid has been designed, built and tested by SCiBreak.
Low-redshift estimates of the absolute scale of baryon acoustic oscillations
Creators: name: Lemos, Thais
name: Ruchika
name: Carvalho, Joel C.
name: Alcaniz, Jailson
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Measurements of the characteristic length scale $r_s$ of the baryon acoustic oscillations (BAO) provide a robust determination of the distance-redshift relation. Currently, the best (sub-per cent) estimate of $r_s$ at the drag epoch is provided by Cosmic Microwave Background (CMB) observations assuming the validity of the standard $Λ$CDM model at $z \sim 1000$. Therefore, inferring $r_s$ from low-$z$ observations in a model-independent way and comparing its value with CMB estimates provides a consistency test of the standard cosmology and its assumptions at high-$z$. In this paper, we address this question and estimate the absolute BAO scale combining angular BAO measurements and type Ia Supernovae data. Our analysis uses two different methods to connect these data sets and finds a good agreement between the low-$z$ estimates of $r_{s}$ with the CMB sound horizon at drag epoch, regardless of the value of the Hubble constant $H_0$ considered. These results highlight the robustness of the standard cosmology at the same time that they also reinforce the need for more precise cosmological observations at low-$z$.
description: 8 pages, 4 tables, and 3 figures
Effects on quantum physics of the local availability of mathematics and space time dependent scaling factors for number systems
Creators: name: Benioff, Paul
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The work is based on two premises: local availability of mathematics to an observer at any space time location, and the observation that number systems, as structures satisfying axioms for the number type being considered, can be scaled by arbitrary, positive real numbers. Local availability leads to the assignment of mathematical universes, $V_{x},$ to each point, $x,$ of space time. $V_{x}$ contains all the mathematics that an observer, $O_{x},$ at $x,$ can know. Each $V_{x}$ contains many types of mathematical systems. These include the different types of numbers (natural numbers, integers, rationals, and real and complex numbers), Hilbert spaces, algebras, and many other types of systems. Space time dependent scaling of number systems is used to define representations, in $V_{x}$, of real and complex number systems in $V_{y}$. The representations are scaled by a factor $r_{y,x}$ relative to the systems in $V_{x}.$ For $y$ a neighbor point of $x,$ $r_{y,x}$ is the exponential of the scalar product of a gauge field, $\vec{A}(x),$ and the vector from $x$ to $y.$ For $y$ distant from $x,$ $r_{y,x}$ is a path integral from $x$ to $y.$ Some consequences of the two premises will be examined. Number scaling has no effect on general comparisons of numbers obtained as computations or as experimental outputs. The effect is limited to mathematical expressions that include space or space time integrals or derivatives. The effect of $\vec{A}$ on wave packets and canonical momenta in quantum theory, and some properties of $\vec{A}$ in gauge theories, is described.
description: 31 pages, 2 figures, To appear as chapter in book, Quantum Theory, Publ. by Intech: Typos corrected, some paragraphs rewritten