cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Μηχανισμοί εξοικονόμησης ενέργειας σε κατανεμημένα συστήματα μεγάλης κλίμακας
Creators: name: Τερζόπουλος, Γεώργιος A.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Πολιτικές δρομολόγησης
Εξοικονόμηση ενέργειας
Εξισορρόπηση φόρτου
Συστήματα μεγάλης κλίμακας
Scheduling policies
Power-saving
Load balancing
Large-scale systems

description: Η ανάγκη για εξοικονόμηση ενέργειας είναι μια από τις βασικές επιδιώξεις του ανθρώπου αυτήν την περίοδο. Οι λόγοι είναι κυρίως περιβαλλοντικοί αλλά και οικονομικοί. Το κόστος της ενέργειας αυξάνεται με την πάροδο του χρόνου και η επιβάρυνση στο περιβάλλον λόγω του διοξειδίου του άνθρακα γίνεται όλο και μεγαλύτερη. Ένα μεγάλο μέρος της κατανάλωσης ενέργειας προέρχεται από τον κλάδο της πληροφορικής και τα συστήματα μεγάλης κλίμακας. Η συνεισφορά της διατριβής εντοπίζεται στην πρόταση μηχανισμών εξοικονόμησης ενέργειας κατά την εκτέλεση διεργασιών πραγματικού χρόνου και BoT σε μεγάλης κλίμακας συστήματα, χωρίς όμως να υποβαθμίζεται η απόδοση του συστήματος. Οι μηχανισμοί αυτοί εστιάζουν στις τεχνικές DVFS και DPM, καθώς και στην δρομολόγηση και μεταφορά των διεργασιών σε συστήματα μεγάλης κλίμακας. Οι βλάβες σε ένα σύστημα μεγάλης κλίμακας είναι ένα συχνό φαινόμενο. Μια κοινή πρακτική είναι η αντικατάσταση ενός επεξεργαστή που έχει βλάβη με έναν άλλον νέας γενιάς με μικρότερη ενεργειακή κατανάλωση. Έτσι, στη διατριβή αυτή εξετάζεται κατά πόσο αυτές οι αντικαταστάσεις ωφελούν το σύστημα και το κάνουν πιο «πράσινο» και αν επηρεάζεται σημαντικά η απόδοση του συστήματος.
description: Energy preservation is one of the basic goals of mankind nowadays. Reasons are mainly environmental and cost. The cost of energy is rising and the damage to the environment due to CO2 emissions is getting worse. Computers and large-scale systems are significant contributors to the global energy consumption. The contribution of this thesis lies in the implementation of new techniques in order to save energy during the execution of real-time tasks and BoT applications in large-scale systems without affecting the performance of the system. These mechanisms focus on DVFS and DPM techniques, as well as scheduling and load balancing of tasks in large-scale systems. Failures are a common phenomenon in large-scale systems. A common practice is to replace a failed processor with a more “green” energy-saving processor. In this thesis, how these replacements due to failures affect performance and energy consumption of the system is studied.
Anisotropic surface reaction limited phase transformation dynamics in LiFePO4
Creators: name: Singh, G. K.
name: Bazant, M. Z.
name: Ceder, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A general continuum theory is developed for ion intercalation dynamics in a single crystal of a rechargeable battery cathode. It is based on an existing phase-field formulation of the bulk free energy and incorporates two crucial effects: (i) anisotropic ionic mobility in the crystal and (ii) surface reactions governing the flux of ions across the electrode/electrolyte interface, depending on the local free energy difference. Although the phase boundary can form a classical diffusive "shrinking core" when the dynamics is bulk-transport-limited, the theory also predicts a new regime of surface-reaction-limited (SRL) dynamics, where the phase boundary extends from surface to surface along planes of fast ionic diffusion, consistent with recent experiments on LiFePO4. In the SRL regime, the theory produces a fundamentally new equation for phase transformation dynamics, which admits traveling-wave solutions. Rather than forming a shrinking core of untransformed material, the phase boundary advances by filling (or emptying) successive channels of fast diffusion in the crystal. By considering the random nucleation of SRL phase-transformation waves, the theory predicts a very different picture of charge/discharge dynamics from the classical diffusion-limited model, which could affect the interpretation of experimental data for LiFePO4.
description: 15 pages, 10 figures
Topologically-driven three-spin chiral exchange interactions treated from first principles
Creators: name: Mankovsky, Sergiy
name: Polesya, Svitlana
name: Ebert, Hubert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The mechanism behind the three-spin chiral interaction (TCI) included in the extended Heisenberg Hamiltonian and represented by an expression worked out recently (Phys.\ Rev.\ B, {\bf 101}, 174401 (2020)) is discussed. It is stressed that this approach provides a unique set of the multispin exchange parameters which are independent of each other either due to their different order of perturbation or due to different symmetry. This ensures in particular the specific properties of the TCI that were demonstrated previously via fully relativistic first principles calculations, and that result from the common influence of several issues not explicitly seen from the expression for the TCI parameters. Therefore, an interpretation of the TCI is suggested, showing explicitly its dependence on the relativistic spin-orbit coupling and on the topological orbital susceptibility (TOS). This is based on an expression for the TOS that is worked out on the same footing as the expression for the TCI. Using first-principles calculations we demonstrate in addition numerically the common topological properties of the TCI and TOS. To demonstrate the role of the relativistic spin-orbit coupling (SOC) for the TCI, a so-called topological' spin susceptibility (TSS) is introduced. This quantity characterizes the SOC induced spin magnetic moment on the atom in the presence of non-collinear magnetic structure, giving a connection between the TOS and TCI. Numerical results again support our conclusions.
description: 11 pages, 6 figures
Quantum random walks and vanishing of the second Hochschild cohomology
Creators: name: Goswami, Debashish
name: Sahu, Lingaraj
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: Given a conditionally completely positive map $\mathcal L$ on a unital $\ast$-algebra $\A$, we find an interesting connection between the second Hochschild cohomology of $\A$ with coefficients in the bimodule $E_{\mathcal L}=\B^a(\A \oplus M)$ of adjointable maps, where $M$ is the GNS bimodule of $\mathcal L$, and the possibility of constructing a quantum random walk (in the sense of \cite{AP,LP,L,KBS}) corresponding to $\mathcal L$.
Probing topological phase transitions via quantum reflection in the graphene family materials
Creators: name: Abrantes, P. P.
name: Cysne, Tarik P.
name: Szilard, D.
name: Rosa, F. S. S.
name: Pinheiro, F. A.
name: Farina, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically investigate the quantum reflection of different atoms by two-dimensional (2D) materials of the graphene family (silicene, germanene, and stanene), subjected to an external electric field and circularly polarized light. By using Lifshitz theory to compute the Casimir-Polder potential, which ensures that our predictions apply to all regimes of atom-2D surface distances, we demonstrate that the quantum reflection probability exhibits distinctive, unambiguous signatures of topological phase transitions that occur in 2D materials. We also show that the quantum reflection probability can be highly tunable by these external agents, depending on the atom-surface combination, reaching a variation of 40% for Rubidium in the presence of a stanene sheet. Our findings attest that not only dispersive forces play a crucial role in quantum reflection, but also that the topological phase transitions of the graphene family materials can be comprehensively and efficiently probed via atom-surface interactions at the nanoscale.
Αλγόριθμοι διαχείρισης εύρους ζώνης σε δίκτυα επικοινωνιών
Creators: name: Σαρηγιαννίδης, Αντώνης Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Υβριδικά Δίκτυα
Δίκαιη Διαχείριση Εύρους Ζώνης
Σταθμισμένη Διαχείριση
Μηχανισμός μάθησης
Hybrid Networks
Fair Bandwidth Allocation
Weighted Mechanism
Learning Process

description: Το αντικείμενο της παρούσας Διατριβής είναι η εισήγηση νέων αλγορίθμων για τη δίκαιη και αποδοτική διαχείριση του εύρους ζώνης σε δίκτυα επικοινωνιών. Οι προτεινόμενοι αλγόριθμοι εφαρμόζονται τόσο σε ασύρματα όσο και σε υβριδικά οπτικά-ασύρματα δίκτυα πρόσβασης. Οι προτεινόμενοι μηχανισμοί διαχείρισης του εύρους ζώνης λαμβάνουν υπόψη κρίσιμες παραμέτρους που καθορίζουν την απόδοση ενός δικτύου, όπως οι δυναμικά μεταβαλλόμενες συνθήκες ενός δικτύου πρόσβασης και οι διαφοροποιημένες απαιτήσεις για την ποιότητα των παρεχόμενων υπηρεσιών. Σε αυτό το πλαίσιο, παρουσιάζεται ένα προσαρμοστικό σχήμα δυναμικής διαχείρισης εύρους ζώνης στα ασύρματα δίκτυα και συγκεκριμένα σε ένα δίκτυο WiMAX. Ο προσαρμοστικός αλγόριθμος που προτείνεται επιχειρεί να ανταποκριθεί στις δυναμικές απαιτήσεις της καθοδικής και ανοδικής ζεύξης του δικτύου μέσω μηχανισμών μάθησης. Στη συνέχεια, παρουσιάζονται αλγόριθμοι, που εφαρμόζονται τόσο στον οπτικό όσο και στον ασύρματο τομέα ενός υβριδικού δικτύου, που υλοποιούν σταθμισμένους μηχανισμούς παροχής δικαιοσύνης και τεχνικές βελτιστοποίησης που λαμβάνουν υπόψη σημαντικές παραμέτρους όπως τον αριθμό των συνδρομητών και την καθυστέρηση. Η απόδοση των προτεινόμενων αλγορίθμων αξιολογείται μέσω εκτεταμένων συγκριτικών πειραμάτων προσομοίωσης.
description: The main objective of the dissertation is the proposition of new algorithms for the fair and efficient dynamic bandwidth allocation in communication networks. The proposed algorithms are applied both in wireless and in hybrid optical-wireless access networks. The proposed schemes take into account a number of crucial parameters that directly affect the network performance, such as the dynamic nature of modern access networks and the differentiated requirements regarding the quality of services (QoS) provisioning. In this context, an adaptive algorithm applied in WiMAX networks is presented. The novelty of this approach lies in the fact that it constitutes a dynamic and adaptive scheme for adjusting the downlink-to-uplink ratio based on the short-term network dynamics using learning processes. Also, novel bandwidth distribution schemes are proposed for hybrid access networks utilizing weighted fairness provisioning mechanism and optimization techniques in order to incorporate the underlying features of each traffic requests, such as the population density and the propagation delay. The proposed algorithms are extensively evaluated under realistic and dynamic scenarios compared with other competitive allocation schemes.
Distribution of the time of the maximum for stationary processes
Creators: name: Mori, Francesco
name: Majumdar, Satya N.
name: Schehr, Gregory
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider a one-dimensional stationary stochastic process $x(τ)$ of duration $T$. We study the probability density function (PDF) $P(t_{\rm m}|T)$ of the time $t_{\rm m}$ at which $x(τ)$ reaches its global maximum. By using a path integral method, we compute $P(t_{\rm m}|T)$ for a number of equilibrium and nonequilibrium stationary processes, including the Ornstein-Uhlenbeck process, Brownian motion with stochastic resetting and a single confined run-and-tumble particle. For a large class of equilibrium stationary processes that correspond to diffusion in a confining potential, we show that the scaled distribution $P(t_{\rm m}|T)$, for large $T$, has a universal form (independent of the details of the potential). This universal distribution is uniform in the ``bulk'', i.e., for $0 \ll t_{\rm m} \ll T$ and has a nontrivial edge scaling behavior for $t_{\rm m} \to 0$ (and when $t_{\rm m} \to T$), that we compute exactly. Moreover, we show that for any equilibrium process the PDF $P(t_{\rm m}|T)$ is symmetric around $t_{\rm m}=T/2$, i.e., $P(t_{\rm m}|T)=P(T-t_{\rm m}|T)$. This symmetry provides a simple method to decide whether a given stationary time series $x(τ)$ is at equilibrium or not.
description: Main text: 6 pages + 4 figs., Supp. Mat.: 7 pages + 3 figs
MOESM4 of Bacitracin resistance and enhanced virulence of Streptococcus suis via a novel efflux pump
Creators: name: Ma, Jiale
name: Liu, Jin
name: Zhang, Yue
name: Wang, Dan
name: Liu, Runxia
name: Liu, Guangjin
name: Yao, Huochun
name: Pan, Zihao
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 4. Primers used in this study.
Large Amplitude Spin-Hall Oscillations due to Field-like Torque
Creators: name: Arun, R.
name: Gopal, R.
name: Chandrasekar, V. K.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Large amplitude spin-Hall oscillations are identified in a ferromagnetic layer with two perpendicular in-plane easy axis in the presence of field-like torque without any polarizer and external field. The analytical study confirms the possibility of oscillations in the presence of field-like torque. The investigation shows that the oscillation frequency can be tuned from 2 GHz to 80 GHz by current and enhanced by field-like torque. Further, the enhancement of frequency along with the Q-factor by current and field-like torque is also observed.
description: 17 pages, 6 pages, Accepted for publication in Journal of Physics: Condensed Matter
The Invar Tensor Package
Creators: name: Martin-Garcia, Jose M.
name: Portugal, Renato
name: Manssur, Leon R. U.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Symbolic Computation (cs.SC)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The Invar package is introduced, a fast manipulator of generic scalar polynomial expressions formed from the Riemann tensor of a four-dimensional metric-compatible connection. The package can maximally simplify any polynomial containing tensor products of up to seven Riemann tensors within seconds. It has been implemented both in Mathematica and Maple algebraic systems.
description: Accepted in Computer Physics Communications. Package can be downloaded from http://metric.iem.csic.es/Martin-Garcia/xAct/Invar/ (Mathematica version) or http://www.lncc.br/~portugal/Invar.html (Maple version)
Racjonalna natura LGBT
Creators: name: Jamiołkowski, Paweł
Publisher: name: Zenodo
Year: 2021
Subjects: Teoria gier, LGBT, homoseksualizm, orientacja seksualna, zachowania homoseksualne

description: Artykuł proponuje teorię wyjaśniającą występowanie homoseksualizmu i biseksualizmu w przyrodzie. Mechanizm ich powstawania nakreślono przy użyciu ewolucyjnej teorii gier, a w związku z tym nie jest sprzeczny z teorią Darwina o selekcji naturalnej. Pomysł wykorzystania teorii gier jest dwojaki: w pierwszej wersji gracz ma do wyboru strategię heteroseksualną albo homoseksualną, a w drugiej heteroseksualną albo LGBT. Pierwsza wersja prowadzi do konkluzji, że strategia homoseksualna powinna mieć miejsce tylko wśród samców, a samice powinny pozostać heteroseksualne. Jednak to druga wersja zarówno z biologicznego jak i ekonomicznego punktu widzenia wydaje się bardziej racjonalna - w tym wypadku homoseksualizm oraz biseksualizm powstają u obu płci. Aby wykazać to twierdzenie, założono, że LGBT to osobna orientacja seksualna, bez rozbijania na homoseksualną, biseksualną i transseksualną.
Steps minimize dissipation in rapidly driven stochastic systems
Creators: name: Blaber, Steven
name: Louwerse, Miranda D.
name: Sivak, David A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Micro- and nano-scale systems driven by rapid changes in control parameters (control protocols) dissipate significant energy. In the fast-protocol limit, we find that protocols that minimize dissipation at fixed duration are universally given by a two-step process, jumping to and from a point that balances jump size with fast relaxation. Jump protocols could be exploited by molecular machines or thermodynamic computing to improve energetic efficiency, and implemented in nonequilibrium free-energy estimation to improve accuracy.
Global analysis of proton elastic form factor data with two-photon exchange corrections
Creators: name: Arrington, J.
name: Melnitchouk, W.
name: Tjon, J. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We use the world's data on elastic electron--proton scattering and calculations of two-photon exchange effects to extract corrected values of the proton's electric and magnetic form factors over the full Q^2 range of the existing data. Our analysis combines the corrected Rosenbluth cross section and polarization transfer data, and is the first extraction of G_Ep and G_Mp including explicit two-photon exchange corrections and their associated uncertainties. In addition, we examine the angular dependence of the corrected cross sections, and discuss the possible nonlinearities of the cross section as a function of epsilon.
description: 13 pages, 3 figures, 4 tables, to be submitted to Phys. Rev. C
Casimir forces between arbitrary compact objects
Creators: name: Emig, T.
name: Graham, N.
name: Jaffe, R. L.
name: Kardar, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop an exact method for computing the Casimir energy between arbitrary compact objects, either dielectrics or perfect conductors. The energy is obtained as an interaction between multipoles, generated by quantum current fluctuations. The objects' shape and composition enter only through their scattering matrices. The result is exact when all multipoles are included, and converges rapidly. A low frequency expansion yields the energy as a series in the ratio of the objects' size to their separation. As an example, we obtain this series for two dielectric spheres and the full interaction at all separations for perfectly conducting spheres.
description: 4 pages, 1 figure
The neutrino gravitational memory from a core collapse supernova: phenomenology and physics potential
Creators: name: Mukhopadhyay, Mainak
name: Cardona, Carlos
name: Lunardini, Cecilia
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: General Relativity predicts that the passage of matter or radiation from an asymmetrically-emitting source should cause a permanent change in the local space-time metric. This phenomenon, called the \emph{gravitational memory effect}, has never been observed, however supernova neutrinos have long been considered a promising avenue for its detection in the future. With the advent of deci-Hertz gravitational wave interferometers, observing the supernova neutrino memory will be possible, with important implications for multimessenger astronomy and for tests of gravity. In this work, we develop a phenomenological (analytical) toy model for the supernova neutrino memory effect, which is overall consistent with the results of numerical simulations. This description is then generalized to several case studies of interest. We find that, for a galactic supernova, the dimensionless strain, $h(t)$, is of order $\sim 10^{-22} - 10^{-21}$, and develops over a typical time scale that varies between $\sim 0.1 - 10$ s, depending on the time-evolution of the anisotropy of the neutrino emission. The characteristic strain, $h_c(f)$, has a maximum at a frequency $f_{max} \sim {\mathcal O}(10^{-1}) - {\mathcal O}(1)$ Hz. The detailed features of the time- and frequency-structure of the memory strain will inform us of the matter dynamics near the collapsed core, and allow to distinguish between different stellar collapse scenarios. Next generation gravitational wave detectors like DECIGO and BBO will be sensitive to the neutrino memory effect for supernovae at typical galactic distances and beyond; with Ultimate DECIGO exceeding a detectability distance of 10 Mpc.
description: 35 pages, 10 figures, 2 tables. Updated to reflect published version. Minor changes, typos corrected, results unchanged
Multi-spin soft bootstrap and scalar-vector Galileon
Creators: name: Kampf, Karol
name: Novotny, Jiri
name: Preucil, Filip
name: Trnka, Jaroslav
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the amplitude soft bootstrap method to explore the space of effective field theories (EFT) of massless vectors and scalars. It is known that demanding vanishing soft limits fixes uniquely a special class of EFTs: non-linear sigma model, scalar Galileon and Born-Infeld theories. Based on the amplitudes analysis, we conjecture no-go theorems for higher-derivative vector theories and theories with coupled vectors and scalars. We then allow for more general soft theorems where the non-trivial part of the soft limit of the (n+1)-pt amplitude is equal to a linear combination of n-pt amplitudes. We derive the form of these soft theorems for general power-counting and spins of particles and use it as an input into the soft bootstrap method in the case of Galileon power-counting and coupled scalar-vector theories. We show that this unifies the description of existing Galileon theories and leads us to the discovery of a new exceptional theory: Special scalar-vector Galileon.
description: 40 pages, 4 figures; v2: minor changes, published version
Bulk dissipation in the quantum anomalous Hall effect
Creators: name: Rodenbach, Linsey K.
name: Rosen, Ilan T.
name: Fox, Eli J.
name: Zhang, Peng
name: Pan, Lei
name: Wang, Kang L.
name: Kastner, Marc A.
name: Goldhaber-Gordon, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Even at the lowest accessible temperatures, measurements of the quantum anomalous Hall (QAH) effect have indicated the presence of parasitic dissipative conduction channels. There is no consensus whether parasitic conduction is related to processes in the bulk or along the edges. Here, we approach this problem by comparing transport measurements of Hall bar and Corbino geometry devices fabricated from Cr-doped (BiSb)$_2$Te$_3$. We identify bulk conduction as the dominant source of dissipation at all values of temperature and in-plane electric field. Furthermore, we observe identical breakdown phenomenology in both geometries, indicating that breakdown of the QAH phase is a bulk process. The methodology developed in this study could be used to identify dissipative conduction mechanisms in new QAH materials, ultimately guiding material development towards realization of the QAH effect at higher temperatures.
description: 9 pages, 4 figures, with 11 pages of supplementary information
Vertex-algebraic structure of the principal subspaces of certain A_1^(1)-modules, I: level one case
Creators: name: Calinescu, Corina
name: Lepowsky, James
name: Milas, Antun
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B69; 17B65; 05A17

description: This is the first in a series of papers in which we study vertex-algebraic structure of Feigin-Stoyanovsky's principal subspaces associated to standard modules for both untwisted and twisted affine Lie algebras. A key idea is to prove suitable presentations of principal subspaces, without using bases or even ``small'' spanning sets of these spaces. In this paper we prove presentations of the principal subspaces of the basic A_1^(1)-modules. These convenient presentations were previously used in work of Capparelli-Lepowsky-Milas for the purpose of obtaining the classical Rogers-Ramanujan recursion for the graded dimensions of the principal subspaces.
description: 20 pages. To appear in International J. of Math
Low-energy optical properties of the non-magnetic kagome metal CsV$_3$Sb$_5$
Creators: name: Uykur, E.
name: Ortiz, B. R.
name: Iakutkina, O.
name: Wenzel, M.
name: Wilson, S. D.
name: Dressel, M.
name: Tsirlin, A. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Temperature-dependent reflectivity measurements on the kagome metal CsV$_3$Sb$_5$ in a broad frequency range of $50-20000$ cm$^{-1}$ down to $T$=10 K are reported. The charge-density wave (CDW) formed below $T_{\rm CDW}$ = 94 K manifests itself in a prominent spectral-weight transfer from low to higher energy regions. The CDW gap of 60-75 meV is observed at the lowest temperature and shows significant deviations from an isotropic BCS-type mean-field behavior. Absorption peaks appear at frequencies as low as 200 cm$^{-1}$ and can be identified with interband transitions according to density-functional calculations. The change in the interband absorption compared to KV$_3$Sb$_5$ reflects the inversion of band saddle points between the K and Cs compounds. Additionally, a broader and strongly temperature-dependent absorption feature is observed below 1000 cm$^{-1}$ and assigned to a displaced Drude peak. It reflects localization effects on charge carriers.
description: 9 pages, 7 figures
The solidification of ductile cast iron
Creators: name: Boeri, Roberto Enrique
Publisher: name: University of British Columbia
Year: 2011

description: The microsegregation of Mn, Cu, Cr, Mo, Ni and Si has been measured in cast ductile iron and in ductile iron which has been quenched when partially solidified. Effective segregation coefficients have been determined for each of the elements, and used to calculate the segregation on the basis of the Scheil equation. The calculated values agree reasonably well with the values of the solute concentration as a function of the solid fraction measured in quenched samples. The microstructure of the solid phases during the solidification of ductile iron has been observed. Solidification of eutectic ductile iron begins with the independent nucleation of austenite and graphite in the melt. Later the graphite nodules are enveloped by austenite, and further solidification takes place by the thickening of the austenite layers enveloping the graphite. Isolated pockets of interdendritic melt are the last material to solidify. On the basis of the measured segregation of the different alloying elements, the mechanisms by which the segregation affects the microstructure are considered, and an explanation for the effect of segregation on the hardenability of ductile iron is proposed. A mathematical model of the solidification of eutectic ductile iron is formulated which includes heat flow, nucleation and growth of graphite nodules, and the segregation of Si. The model uses equilibrium temperatures given by the ternary Fe-C-Si equilibrium diagram. Using the mathematical model, cooling curves, nodule count and nodular size distribution are determined as a function of position in the casting sample. The results are compared to measured temperatures, nodule count and nodule size in rod castings of 12.5, 20 and 43mm radius. There is good agreement between the calculated and measured values for the 43mm radius rod, and not quite good agreement for the rods of smaller radii. The changes in solidification predicted by the model when some solidification parameters are varied are consistent with experimental observations with the same variation in the parameters.
Rebuilding an Inclusive, Value-based Europe of Solidarity and Trust through Social Investments
Creators: name: RE-InVEST
Publisher: name: Zenodo
Year: 2015

description: The RE‐InVEST research (2015-2019) aims to rebalance the social investment model towards the effective promotion of human rights and capabilities and suggests practical ways to apply this rebalanced model in the fields of active labour market policies and social protection, as well as to public intervention in basic service markets. Moreover, RE-InVEST considers innovative funding sources and governance principles.
A no-pure-boost uncertainty principle from spacetime noncommutativity
Creators: name: Amelino-Camelia, Giovanni
name: Gubitosi, Giulia
name: Marcianó, Antonino
name: Martinetti, Pierre
name: Mercati, Flavio
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study boost and space-rotation transformations in kappa-Minkowski noncommutative spacetime, using the techniques that some of us had previously developed (hep-th/0607221) for a description of translations in kappa-Minkowski, which in particular led to the introduction of translation transformation parameters that do not commute with the spacetime coordinates. We find a similar description of boosts and space rotations, which allows us to identify some associated conserved charges, but the form of the commutators between transformation parameters and spacetime coordinates is incompatible with the possibility of a pure boost.
description: 8 pages, LaTex
On the cosmic distance duality relation and the strong gravitational lens power law density profile
Creators: name: Lima, F. S.
name: Holanda, R. F. L.
name: Pereira, S. H.
name: da Silva, W. J. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Many new strong gravitational lensing (SGL) systems have been discovered in the last two decades with the advent of powerful new space and ground-based telescopes. The effect of the lens mass model (usually the power-law mass model) on cosmological parameters constraints has been performed recently in literature. In this paper, by using SGL systems and Supernovae type Ia observations, we explore if the power-law mass density profile ($ρ\propto r^{-γ}$) is consistent with the cosmic distance duality relation (CDDR), $D_L(1+z)^{-2}/D_A=η(z)=1$, by considering different lens mass intervals. { It has been obtained that the verification of the CDDR validity is significantly dependent on lens mass interval considered: the sub-sample with $σ_{ap} \geq 300$ km/s (where $σ_{ap}$ is the lens apparent stellar velocity dispersion) is in full agreement with the CDDR validity, the sub-sample with intermediate $σ_{ap}$ values ($200 \leq σ_{ap} < 300)$ km/s is marginally consistent with $η=1$ and, finally, the sub-sample with low $σ_{ap}$ values ($σ_{ap} < 200$ km/s) ruled out the CDDR validity with high statistical confidence. Therefore, if one takes the CDDR as guarantee, our results suggest that using a single density profile is not suitable to describe lens with low $σ_{ap}$ values and it is only an approximate description to lenses with intermediate mass interval. }
description: 8 pages, 4 figures, I table, Accepted for publication in the JCAP
Magnetospheric Emissions from the Planet Orbiting tau Boo: A Multi-Epoch Search
Creators: name: Lazio, T. Joseph W.
name: Farrell, W. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: All of the solar system gas giants produce electron cyclotron masers, driven by the solar wind impinging on their magnetospheres. Extrapolating to the planet orbiting tau Boo, various authors have predicted that it may be within the detection limits of the 4-meter wavelength (74 MHz) system on the Very Large Array. This paper reports three epochs of observations of tau Boo. In no epoch do we detect the planet; various means of determining the upper limit to the emission yield single-epoch limits ranging from 135 to 300 mJy. We develop a likelihood method for multi-epoch observations and use it to constrain various radiation properties of the planet. Assuming that the planet does radiate at our observation wavelength, its typical luminosity must be less than about 10^{16} W, unless its radiation is highly beamed into a solid angle Omega << 1 sr. While within the range of luminosities predicted by various authors for this planet, this value is lower than recent estimates which attempt to take into account the stellar wind of tau Boo using the known properties of the star itself. Electron cyclotron maser emission from solar systems planets is beamed, but with characteristic solid angles of approximately 1 sr illuminated. Future long-wavelength instruments (e.g., the Long Wavelength Array and the Low Frequency Array) must be able to make typical flux density measurements on short time scales (~ 15 min.) of approximately 25 mJy in order to improve these constraints significantly.
description: 11 pages, 5 figures; AASTeX format; ApJ in press
The annual growth survey 2016: opening the door for social policy ?
Creators: name: Debruyne, M.
name: Leaman, J.
Publisher: name: Zenodo
Year: 2016

description: With the publication of the latest Annual Growth Survey (AGS)1 a new annual cycle of EU economic policy coordination has begun. The AGS is an important step in the European Semester2. In this cycle "the European Commission analyses the fiscal and structural reform policies of every Member State, provides recommendations, and monitors their implementation; the Member States implement the commonly agreed policies".

The AGS sets out the European Commission’s views on the EU’s social and economic priorities and provides the building blocks for the policy recommendations it will put forward in the spring. The European Semester streamlines the macro-economic, the labour market and the fiscal policies. In recent years, the Semester streamlined the austerity and supply-side economic and social policies.

The first AGS based on the reorientations of the new Commission is long-awaited: the new Commission promoted it as a new start for Europe. The AGS is intended to be part of this new start. There are many signs that this Commission wants to take another path. The AGS shows a new discourse. But can we expect more?

The AGS expresses the new priorities of the Commission. As we show in this Policy Brief, the AGS announces a larger sensibility for social accents in EU-policy. We should however note that social policy has always been a matter for member states, the Commission only provides guidelines, which is very different from the strict fiscal and monetary rules under various monetary union projects such as the single currency.

Unfortunately, often discourse is not enough to convince citizens that the European Union will truly work for an effective implementation of its social objectives. We show that a massive ambiguity is blurring the meaning of this discourse. We find a misreading of the signs and a lot of blind spots in the AGS.

Therefore, as shown in this Policy Brief the Commission should go further:

	The Commission must develop a real European social policy. Social policy is of course a core task of the Member States, but this doesn’t mean that Europe can’t take the lead. As in the discussion surrounding the refugee crisis, the Commission can develop this policy: binding common standards of social protection; an enforceable benchmarking; common standards on social investment, …
	The Commission must re-evaluate the AGS. The AGS is the consequence/result of the macro-economic governance of the Six- and Two-pack. This macro-economic governance is based on a misreading of the signs and contains several blind spots. A new governance can be elaborated, one that reckons with these blind spots and a correct reading of the signs.
GLSM's for partial flag manifolds
Creators: name: Donagi, R.
name: Sharpe, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we outline some aspects of nonabelian gauged linear sigma models. First, we review how partial flag manifolds (generalizing Grassmannians) are described physically by nonabelian gauged linear sigma models, paying attention to realizations of tangent bundles and other aspects pertinent to (0,2) models. Second, we review constructions of Calabi-Yau complete intersections within such flag manifolds, and properties of the gauged linear sigma models. We discuss a number of examples of nonabelian GLSM's in which the Kahler phases are not birational, and in which at least one phase is realized in some fashion other than as a complete intersection, extending previous work of Hori-Tong. We also review an example of an abelian GLSM exhibiting the same phenomenon. We tentatively identify the mathematical relationship between such non-birational phases, as examples of Kuznetsov's homological projective duality. Finally, we discuss linear sigma model moduli spaces in these gauged linear sigma models. We argue that the moduli spaces being realized physically by these GLSM's are precisely Quot and hyperquot schemes, as one would expect mathematically.
description: 57 pp, LaTeX; v3: refs added, material on weighted Grassmannians added
ปัจจัยที่สัมพันธ์ต่อสุขภาพองค์การของสถานศึกษา ในเขตจังหวัดภาคตะวันออกเฉียงเหนือ
Creators: name: ธัชชัย จิตรนันท์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: สุขภาพองค์กร, ทัศนะของผู้บริหารศึกษา, ปัจจัยที่ส่งผลต่อสุขภาพองค์การ

description: 1, 33, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
Warm HCN, C2H2, and CO in the disk of GV Tau
Creators: name: Gibb, E. L.
name: Van Brunt, K. A.
name: Brittain, S. D.
name: Rettig, T. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first high-resolution, ground-based observations of HCN and C2H2 toward the T Tauri binary star system GV Tau. We detected strong absorption due to HCN nu_3 and weak C2H2 (nu_3 and nu_2 + (nu_4 + nu_5)^0_+) absorption toward the primary (GV Tau S) but not the infrared companion. We also report CO column densities and rotational temperatures, and present abundances relative to CO of HCN/CO ~0.6% and C2H2/CO ~1.2% and an upper limit for CH4/CO < 0.37% toward GV Tau S. Neither HCN nor C2H2 were detected toward the infrared companion and results suggest that abundances may differ between the two sources.
description: 23 pages, 6 figures, accepted by ApJ
ตัวตนแบบสมัยนิยม ตัวตนแบบหลังสมัยนิยม และการสร้างผู้เขียนที่เรียนภาษาอังกฤษในฐานะภาษาต่างประเทศใหม่
Creators: name: สมศักดิ์ แก้วนุช
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: ตัวตนแบบสมัยนิยม, ตัวตนแบบหลังสมัยนิยม, การสร้างผู้เขียนที่เรียนภาษาอังกฤษในฐานะภาษาต่างประเทศ, การเขียนภาษาอังกฤษในฐานะภาษาต่างประเทศ

description: 6, 33, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
$(g-2)_μ$ in the 2HDM and slightly beyond -- an updated view
Creators: name: Ferreira, P. M.
name: Gonçalves, B. L.
name: Joaquim, F. R.
name: Sher, Marc
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The recent measurement of the muon $g - 2$ anomaly continues to defy a Standard Model explanation, but can be accommodated within the framework of two Higgs doublet models. If one further includes extra fermion content in the form of a generation of vector like leptons, the allowed parameter range that explains the anomaly is even further extended, and thorny issues of perturbativity and clashes with $B$-decay constraints avoided. We will show how the muon magnetic moment anomaly can be fit within these models, under the assumption that the vector-like leptons do not mix with the muon. We update previous analyses and include all theoretical and experimental constraints, including searches for extra scalars. It is shown that the inclusion of vector-like fermions allows the lepton-specific and muon-specific models to perform much better in fitting the muon's $g - 2$. These fits do require the Yukawa coupling between the Higgs and the vector-like leptons to be large, causing potential problems with perturbativity and unitarity, and thus models in which the vector-like leptons mix with the muon may be preferred.
description: v3: References and comments added; typos corrected; changes for referee report
Superhump periods in the UGSU-type dwarf nova SDSSp J082409.73+493124.4
Creators: name: Boyd, David
name: Shears, Jeremy
name: Koff, Robert
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present observations and analysis of the first reported superoutburst of the dwarf nova SDSSp J082409.73+493124.4 during February/March 2007. From a maximum observed magnitude of 15.4C it declined at 0.09 mag/d for 7 days, flattened out around magnitude 16 for a further 5 days and then returned rapidly to quiescence at magnitude 19.4. The flattening of the light curve late in the outburst was not associated with a re-growth of superhumps. For the first 5 days we observed common superhumps with period 0.06954(5) d, thus confirming its classification as a UGSU-type dwarf nova. This was followed by a phase transition to late superhumps with period 0.06921(6) d. We found a small but persistent signal at 0.0687(6) d which we interpret as the orbital period.
description: Accepted for publication in Journal of the British Astronomical Association, 11 pages, 8 figures
KEKSALAR SALOMATLIGI VA YASHASH SHAROITI O'RTASIDAGI GIGIYENIK BOG'LIQLIK: ANDIJON VILOYATIDA TADQIQOT
Creators: name: Saxibova, Go'zaloy
name: Umurzakova, Muattar
name: Hasanova, Shoiraxon
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada Andijon viloyatining tumanlari misolida keksa aholining salomatligi va yashash sharoitlari o‘rtasidagi gigiyenik bog‘liqlik chuqur ilmiy tahlil qilindi. Tadqiqotda turmush sharoitlari (ichimlik suvi, chiqindi chiqarish, uy-joy sanitariyasi, yoritish va shamollatish tizimi) va keksalar sog‘liq holati (surunkali kasalliklar, dispanser nazorati, psixososial barqarorlik) o‘rtasidagi o‘zaro aloqalar statistik va GIS tahlil asosida o‘rganildi. Natijalarda gigiyenik infratuzilma yomon bo‘lgan hududlarda yurak-qon tomir, nafas yo‘llari, oshqozon-ichak va psixologik muammolar yuqoriligi aniqlandi. So‘rovnoma va fazoviy xaritalash asosida yuqori xavfli zonalar belgilanib, manzilli sog‘liq siyosatini shakllantirishga oid takliflar ishlab chiqildi. Mazkur maqola sog‘liqni saqlash tizimining ijtimoiy-gigiyenik omillarni integratsiyalashgan yondashuv asosida boshqarishga doir ilmiy asoslangan qarashlarni taklif etadi.
MOESM1 of Urinary cell-free mitochondrial and nuclear deoxyribonucleic acid correlates with the prognosis of chronic kidney diseases
Creators: name: Chang, Chia-Chu
name: Chiu, Ping-Fang
name: Wu, Chia-Lin
name: Kuo, Cheng-Ling
name: Huang, Ching-Shan
name: Liu, Chin-San
name: Huang, Ching-Hui
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Figure S1. Box-whisker plots for plasma NGAL (Figure S1A) and plasma cf-nDNA (Figure S1B) levels in varying stages of CKD.
Κόστος εμπορίου και παραγωγικότητα: η περίπτωση των χωρών του ΟΟΣΑ
Creators: name: Σταμπουλής, Χρήστος Σπ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Υπόδειγμα εξίσωσης βαρύτητας
Κόστος εμπορίου
Διεθνές εμπόριο
Παραγωγικότητα
Gravity equation model
Trade costs
International trade
Productivity

description: Χρησιμοποιώντας ένα νέο μέτρο κόστους διεθνούς εμπορίου, το οποίο παρουσιάστηκε από τον Novy (2012), η παρούσα εργασία διερευνά τον αντίκτυπο πληθώρας παραγόντων οι οποίοι δυνητικά επηρεάζουν το κόστος διεθνούς εμπορίου μεταξύ των χωρών του ΟΟΣΑ. Τα αποτελέσματα της θεωρητικής ανάλυσης αναδεικνύουν τον εξέχοντα ρόλο του ΟΟΣΑ στην επίτευξη των σκοπών του αναφορικά με τη διευκόλυνση των διαδικασιών διεθνούς εμπορίου. Επιπρόσθετα, στο εμπειρικό μέρος, επιχειρείται μια ολιστική προσέγγιση – όσον αφορά τη μοντελοποίηση του κόστους διεθνούς εμπορίου – των παραγόντων που επιδρούν σ’ αυτό καθώς επίσης και η ανάδειξη νέων παραγόντων. Μέσω της εκτίμησης ενός κατάλληλα εξειδικευμένου Υποδείγματος Εξίσωσης Βαρύτητας διαπιστώνεται πως πέραν των «κλασσικών» μεταβλητών που «παραδοσιακά» είθισται να συνθέτουν το κόστος εμπορίου, σημαντικό ρόλο διαδραματίζουν δείκτες όπως αυτοί της συνδεσιμότητας των ακτοπλοϊκών μεταφορών, του απαιτούμενου χρόνου για την υλοποίηση μιας εξαγωγής καθώς επίσης και του αριθμού των απαιτούμενων εγγράφων για τη διεξαγωγή αυτής. Τέλος, η παρούσα εργασία χρησιμοποιεί το μέτρο κόστους διεθνούς εμπορίου, το οποίο προτάθηκε από τον Novy (2012), ώστε να δώσει μια πρώτη απόδειξη της σχέσης κόστους διεθνούς εμπορίου και παραγωγικότητας στον αγροτικό τομέα χωρίς να εξετάζει μέσω ποιών μηχανισμών δημιουργείται αυτή η επίδραση. Βάσει των αποτελεσμάτων υπάρχει ισχυρή απόδειξη πως μείωση του κόστους διεθνούς εμπορίου συνδέεται με βελτίωση της παραγωγικότητας και ταχύτερη αύξηση αυτής στον αγροτικό τομέα.
description: Using a micro – founded gravity equation based on the framework in Novy (2012), this study investigates the impact of a serious number of factors that can affect the international trade costs across the 34 OECD member – countries. The theoretical analysis’ results indicate the magnificent role of OECD to promote policies that facilitate the international trade process. Additionally, concerning the empirical part, is tried a holistic approach – as far as concerned the international trade costs modeling – of the determinants that affect it and the emergence of new important factors. Throughout a gravity equation model, we find that - beyond the “classical” variables that affect the trade costs- maritime transport connectivity, the number of days such as the number of documents that are required for the export process are very important determinants of bilateral trade costs. Finally, this study has used a new measure of trade costs to provide some first evidence on the links between trade costs and productivity in agricultural sector. According to the results, there is strong evidence that agricultural sector facing lower trade costs tend to be more productive, and some evidence that it experience higher productivity growth.
Visualising the Training Process of Convolutional Neural Networks for Non-Experts
Creators: name: Kempen, Lindsay
name: Peters, Michelle
Publisher: name: Zenodo
Year: 2019

description: In the paper 'Visualising the Training Process of Convolutional Neural Networks for Non-Experts', some frames of animated visualizations are presented. Here, the frames of all epochs, as well as the videos made from those frames are made available so they can be used for interpretation.
description: {"references": ["Mathias Eitz, James Hays, and Marc Alexa. 2012. How Do Humans Sketch Objects? ACM Trans. Graph. (Proc. SIGGRAPH) 31, 4 (2012), 44:1\u201344:10."]}