cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An abundance analysis from the STIS-HST UV spectrum of the non-magnetic Bp star HR 6000
Creators: name: Castelli, F.
name: Cowley, C. R.
name: Ayres, T. R.
name: Catanzaro, G.
name: Leone, F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The sharp-line spectrum of the Bp star HR 6000 has peculiarities that distinguish it from those of the HgMn stars with which it is sometimes associated. The position of the star close to the center of the Lupus 3 molecular cloud, whose estimated age is on the order of 9.1 +/- 2.1 Myr, has lead to the hypothesis that the anomalous peculiarities of HR 6000 can be explained by the young age of the star. Observational material from HST provides the opportunity to extend the abundance analysis previously performed for the optical region and clarify the properties of this remarkable peculiar star. Our aim was to obtain the atmospheric abundances for all the elements observed in a broad region from 1250 to 10000 A. An LTE synthetic spectrum was compared with a high-resolution spectrum observed with STIS equipment in the 1250-3040 A interval. The adopted model is an ATLAS12 model already used for the abundance analysis of a high-resolution optical spectrum observed at ESO with UVES. The stellar parameters are Teff=13450K, logg=4.3, and zero microturbulent velocity. Abundances for 28 elements and 7 upper limits were derived from the ultraviolet spectrum. Adding results from previous work, we have now quantitative results for 37 elements, some of which show striking contrasts with those of a broad sample of HgMn stars. The analysis has pointed out ionization anomalies and line-to-line variation in the derived abundances, in particular for silicon. The inferred discrepancies could be explained by non-LTE effects and with the occurrence of diffusion and vertical abundance stratification. In the framework of the last hypothesis, we obtained, by means of trial and error, empirical step functions of abundance versus optical depth log(tau_5000) for carbon, silicon, manganese, and gold, while we failed to find such a function for phosphorous.
description: Accepted by Astronomy & Astrophysics for publication
Letter from E. M. Forster to Herbert Read, February 15, 1945
Creators: name: Forster, E. M. (Edward Morgan), 1879-1970
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Gay authors
valueUri: http://id.worldcat.org/fast/939062
subject: Forster, E. M. (Edward Morgan), 1879-1970
valueUri: http://id.worldcat.org/fast/40913
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Read, Herbert, 1893-1968
valueUri: http://id.worldcat.org/fast/1754386
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718

description: Correspondence between Herbert Read and E.M. Forster (English author). Forster tells Read he will sign the letter requesting funds for the Freedom Defence Committee and offers some suggestions for edits. Forster mentions he is sending other letters including to the B.B.C. and mentions search warrants.
title: Ð­Ð»ÐµÐºÑÑÐ¾Ð¿ÑÐ¸Ð²Ð¾Ð´ Ð¼Ð¾ÑÑÐ¾Ð²Ð¾Ð³Ð¾ ÐºÑÐ°Ð½Ð°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Electric drive of overhead crane lifting
Creators: name: Ð¨Ð¸Ð¿Ð¸Ð»Ð¾Ð², ÐÐ¸ÑÐ°Ð¸Ð»
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: Ð¼Ð¾ÑÑÐ¾Ð²Ð¾Ð¹ ÐºÑÐ°Ð½
ÑÐ»ÐµÐºÑÑÐ¾Ð¿ÑÐ¸Ð²Ð¾Ð´
ÑÑ ÐµÐ¼Ð° ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ
overhead crane
electric drive
control scheme

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ°ÑÑÐµÑÐ°Ð¼ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº Ð¼Ð¾ÑÑÐ¾Ð²Ð¾Ð³Ð¾ ÐºÑÐ°Ð½Ð°, ÑÐ»ÐµÐºÑÑÐ¾-Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ, ÑÐµÐ´ÑÐºÑÐ¾ÑÐ°, Ð¿ÑÐµÐ¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°ÑÐµÐ»Ñ ÑÐ°ÑÑÐ¾ÑÑ Ð¸ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼ÑÑ ÐµÐ¼Ñ Ð°ÐºÑÐµÑÑÑÐ°ÑÐ¾Ð². ÐÐ°Ð´Ð°ÑÐ¸, ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐµÑÐ°Ð»Ð¸ÑÑ Ð² ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: Ð¾Ð±Ð·Ð¾Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð¼Ð¾ÑÑÐ¾Ð²ÑÑ ÐºÑÐ°Ð½Ð¾Ð²; ÑÐ°ÑÑÐµÑ Ð¸ Ð¿Ð¾Ð´Ð±Ð¾Ñ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ð´Ð»Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¼Ð¾ÑÑÐ¾Ð²ÑÐ¼ ÐºÑÐ°Ð½Ð¾Ð¼; ÑÐ°ÑÑÐµÑ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÐµÐ»ÐµÑÐ¾Ð¾Ð±ÑÐ°Ð·Ð½Ð¾ÑÑÐ¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¼Ð¾ÑÑÐ¾Ð²ÑÑ ÐºÑÐ°Ð½Ð¾Ð². Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° ÑÑÐµÐ¼Ð° ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¼Ð¾ÑÑÐ¾Ð²ÑÐ¼ ÐºÑÐ°Ð½Ð¾Ð¼.
description: This work is devoted to calculating the characteristics of the overhead crane, electric motor, gearbox, frequency converter and accessories necessary for it. The tasks that were solved in the course of the study: a review of the application of overhead cranes; calculation and selection of elements for the control of the overhead crane; calculation of the economic feasibility of the use of overhead cranes. As a result of the work, the control scheme of the overhead crane was developed.
Anticipazioni wolfiane, filologia e sociologia nelle Quaestiones Romanae di Christian Falster
Creators: name: Santini, Carlo
Publisher: name: Classiconorroena
Year: 2016

description: The aim of the paper is intended to examine particularly the Quaestiones Romanae of the humanist Christian Falster, who lived and taught lifelong Latin in the Danish kingdom of the early XVIII century. The book is structured formerly according the system of questions and answers, but the exposition begins to become important when the author is giving more attention for the linguistic phenomena of the Latin language and for their evolution in the works of writers, which in my opinion reveals an anticipation of the German philological and historical studies of the forthcoming century. Interesting is also that Falster is gazing on what it means to analyze the patterns of the Roman civilization (the so-called Realien) by a conception which looks like the actually sociology.
description: Classiconorroena, V. 32 (2014)
Hydrodynamical and radio evolution of young supernova remnant G1.9+0.3 based on the model of diffusive shock acceleration
Creators: name: Pavlović, M. Z.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The radio evolution of, so far the youngest known, Galactic supernova remnant (SNR) G1.9+0.3 is investigated by using three-dimensional (3D) hydrodynamic modelling and non-linear kinetic theory of cosmic ray (CR) acceleration in SNRs. We include consistent numerical treatment of magnetic field amplification (MFA) due to resonant streaming instability. Under the assumption that SNR G1.9+0.3 is the result of a Type Ia supernova explosion located near the Galactic Centre, using widely accepted values for explosion energy 10$^{51}$ erg and ejecta mass 1.4 $M_{\odot}$, the non-thermal continuum radio emission is calculated. The main purpose of this paper is to explain radio flux brightening measured over recent decades and also predict its future temporal evolution. We estimate that the SNR is now $\sim$ 120 yr old, expanding in an ambient density of 0.02 cm$^{-3}$, and explain its steep radio spectral index only by means of efficient non-linear diffusive shock acceleration (NLDSA). We also make comparison between simulations and observations of this young SNR, in order to test the models and assumptions suggested. Our model prediction of a radio flux density increase of $\sim$ 1.8 per cent yr$^{-1}$ during the past two decades agrees well with the measured values. We synthesize the synchrotron spectrum from radio to X-ray and it fits well the VLA, MOST, Effelsberg, Chandra and NuSTAR measurements. We also propose a simplified evolutionary model of the SNR in gamma rays and suggest it may be a promising target for gamma-ray observations at TeV energies with the future generation of instruments like Cherenkov Telescope Array. SNR G1.9+0.3 is the only known Galactic SNR with the increasing flux density and we present here the prediction that the flux density will start to decrease approximately 500 yr from now. We conclude that this is a general property of SNRs in free expansion phase.
description: 16 pages, 11 figures, 1 table; corrected typos, updated references
Contro lo scandinavismo. Johan Nicolaj Madvig tra culture nazionali e cultura universale
Creators: name: Valvo, Eva
Publisher: name: Classiconorroena
Year: 2016

description: The articles analyses the text of an important lecture held by the distinguished Danish scholar Johan Nicolaj Madvig at a meeting of the Scandinavian Society in Copenhagen in 1844, bearing the title «On the relationship between Scandinavism and universal culture». According to Madvig, every nation needs to develop its own culture in specific given circumstances, while keeping a universal perspective in mind. A true national culture takes its form in this delicate balance between particular and universal. Il presente articolo si sofferma ad analizzare il testo di una importante conferenza tenuta dal grande filologo danese Johan Nicolaj Madvig presso la Società Scandinava di Copenaghen nel 1844, con il titolo «Sul rapporto tra scandinavismo e cultura universale». Per lo studioso ogni nazione deve sì sviluppare la propria cultura all’interno di date condizioni specifiche, ma senza mai perdere di vista la prospettiva universale. Ed è in questo delicato equilibrio tra particolare ed universale che prende forma la vera cultura nazionale.
description: Classiconorroena, V. 32 (2014)
Miss Brown's mermaid
Creators: name: Roberton, Thomas Beattie, 1879-1936
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Canadian poetry
valueUri: http://id.worldcat.org/fast/845173
subject: Authors, Canadian
valueUri: http://id.worldcat.org/fast/821870
subject: Brown, Audrey Alexandra, 1904-1998
valueUri: http://id.worldcat.org/fast/409826
subject: Roberton, Thomas Beattie, 1879-1936
subject: Canadian literature
valueUri: http://id.worldcat.org/fast/845111

description: A newspaper clipping by Thomas Beattie Roberton reviewing Brown's The Mermaid. The review appeared in the June 13, 1934 edition of The Winnipeg Free Press.
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ´Ð°Ð»ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐµÑÐµÐ²ÑÐ¼Ð¸ ÑÐ·Ð»Ð°Ð¼Ð¸ Ð¿Ð¾ Ð¿ÑÐ¾ÑÐ¾ÐºÐ¾Ð»Ñ NETCONF
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development of a system for remote management of network nodes using NETCONF protocol
Creators: name: Ð¨Ð¸ÑÐ°Ð½Ð¾Ð², Ð Ð¾Ð¼Ð°Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÐºÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½ÑÐµ ÑÐµÑÐ¸
ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ ÑÐµÑÐµÐ²ÑÐ¼Ð¸ ÑÐ·Ð»Ð°Ð¼Ð¸
NETCONF
Sysrepo
computer networks
management of network nodes

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ´Ð°Ð»ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐµÑÐµÐ²ÑÐ¼Ð¸ ÑÐ·Ð»Ð°Ð¼Ð¸ Ð¿Ð¾ Ð¿ÑÐ¾ÑÐ¾ÐºÐ¾Ð»Ñ NETCONF, ÐºÐ¾ÑÐ¾ÑÐ°Ñ Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÐµÑ ÑÐµÐ½ÑÑÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½Ð½Ð¾ ÑÐ¿ÑÐ°Ð²Ð»ÑÑÑ Ð½Ð°Ð±Ð¾ÑÐ°Ð¼Ð¸ ÑÐµÑÐµÐ²ÑÑ ÑÐ·Ð»Ð¾Ð², ÑÑÐ¾ Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÐµÑ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð¾Ð²Ð°ÑÑ Ð¿ÑÐ¾ÑÐµÑÑ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½ÑÐ¼Ð¸ ÑÐµÑÑÐ¼Ð¸. ÐÐ°Ð´Ð°ÑÐ¸, ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐµÑÐ°Ð»Ð¸ÑÑ Ð² ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: 1. ÐÐ·ÑÑÐµÐ½Ð¸Ðµ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹ ÑÐµÐ½ÑÑÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½ÑÐ¼Ð¸ ÑÐµÑÑÐ¼Ð¸ 2. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð²ÑÑÐ¾ÐºÐ¾ÑÑÐ¾Ð²Ð½ÐµÐ²Ð¾Ð¹ Ð°ÑÑÐ¸ÑÐµÐºÑÑÑÑ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ 3. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð°ÑÑÐ¸ÑÐµÐºÑÑÑÑ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÑ ÑÐ°ÑÑÐµÐ¹ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ 4. ÐÐ°Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ ÐºÐ¾Ð´Ð° ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ 5. ÐÐ¾ÐºÑÐ¼ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ 6. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐµÑÑ Ð¿Ð»Ð°Ð½Ð° ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð° ÑÐ¾Ð·Ð´Ð°Ð½Ð° ÑÐ¸ÑÑÐµÐ¼Ð° ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐµÑÐµÐ²ÑÐ¼Ð¸ ÑÐ·Ð»Ð°Ð¼Ð¸ ÑÐµÑÐµÐ· Ð¿ÑÐ¾ÑÐ¾ÐºÐ¾Ð» NETCONF. Ð Ð±ÑÐ´ÑÑÐµÐ¼, Ð´Ð°Ð½Ð½Ð°Ñ ÑÐ¸ÑÑÐµÐ¼Ð° Ð±ÑÐ´ÐµÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð° Ð² ÐºÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½ÑÑ ÑÐµÑÑÑ Ð·Ð°ÐºÐ°Ð·ÑÐ¸ÐºÐ°.
description: This work is devoted to the development of a system for remote management of network nodes via NETCONF protocol, which allows centralized management of sets of network nodes, which allows efficient organization of the management process of computer networks. The tasks that were solved during the research: 1. Study of existing solutions for centralized management of computer networks 2. Development of a high-level architecture of the management system 3. Development of architecture of program parts of the management system 4. Writing the code of the control system 5. Documentation of the developed management system 6. Development of a test of the management system plan As a result of the work, a system for managing network nodes using the NETCONF protocol was created. In the future, this system will be used in the customers computer networks.
Constraining Relativistic Bow Shock Properties in Rotation-Powered Millisecond Pulsar Binaries
Creators: name: Wadiasingh, Zorawar
name: Harding, Alice K.
name: Venter, Christo
name: Böttcher, Markus
name: Baring, Matthew G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Multiwavelength followup of unidentified Fermi sources has vastly expanded the number of known galactic-field "black widow" and "redback" millisecond pulsar binaries. Focusing on their rotation-powered state, we interpret the radio to X-ray phenomenology in a consistent framework. We advocate the existence of two distinct modes differing in their intrabinary shock orientation, distinguished by the phase-centering of the double-peaked X-ray orbital modulation originating from mildly-relativistic Doppler boosting. By constructing a geometric model for radio eclipses, we constrain the shock geometry as functions of binary inclination and shock stand-off $R_0$. We develop synthetic X-ray synchrotron orbital light curves and explore the model parameter space allowed by radio eclipse constraints applied on archetypal systems B1957+20 and J1023+0038. For B1957+20, from radio eclipses the stand-off is $R_0 \sim 0.15$ -- $0.3$ fraction of binary separation from the companion center, depending on the orbit inclination. Constructed X-ray light curves for B1957+20 using these values are qualitatively consistent with those observed, and we find occultation of the shock by the companion as a minor influence, demanding significant Doppler factors to yield double peaks. For J1023+0038, radio eclipses imply $R_0 \lesssim 0.4$ while X-ray light curves suggest $0.1\lesssim R_0 \lesssim 0.3$ (from the pulsar). Degeneracies in the model parameter space encourage further development to include transport considerations. Generically, the spatial variation along the shock of the underlying electron power-law index should yield energy-dependence in the shape of light curves motivating future X-ray phase-resolved spectroscopic studies to probe the unknown physics of pulsar winds and relativistic shock acceleration therein.
description: Accepted to ApJ, 36 pages, 15 figures; comments welcome
Rec. a Andrea di Robilant, Irresistibile Nord, Milano, Corbaccio, 2012
Creators: name: Stok, Fabio
Publisher: name: Classiconorroena
Year: 2014

description: Rec. a Andrea di Robilant, Irresistibile Nord, Milano, Corbaccio, 2012 .
description: Classiconorroena, V. 31 (2013)
Asymmetry of short-term control of spatio-temporal gait parameters during treadmill walking
Creators: name: Kozlowska, Klaudia
name: Latka, Miroslaw
name: West, Bruce J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Optimization of energy cost determines average values of spatio-temporal gait parameters such as step duration, step length or step speed. However, during walking, humans need to adapt these parameters at every step to respond to exogenous and/or endogenic perturbations. While some neurological mechanisms that trigger these responses are known, our understanding of the fundamental principles governing step-by-step adaptation remains elusive. We determined the gait parameters of 20 healthy subjects with right-foot preference during treadmill walking at speeds of 1.1, 1.4 and 1.7 m/s. We found that when the value of the gait parameter was conspicuously greater (smaller) than the mean value, it was either followed immediately by a smaller (greater) value of the contralateral leg (interleg control), or the deviation from the mean value decreased during the next movement of ipsilateral leg (intraleg control). The selection of step duration and the selection of step length during such transient control events were performed in unique ways. We quantified the symmetry of short-term control of gait parameters and observed the significant dominance of the right leg in short-term control of all three parameters at higher speeds (1.4 and 1.7 m/s).
description: 11 pages, 4 figures
Karsten Friis-Jensen in memoriam 1947-2012
Creators: name: Pade, Marianne
Publisher: name: Classiconorroena
Year: 2014

description: Il contributo costituisce un profilo scientifico e umano del famoso studioso danese recentemente scomparso, in cui ci si propone di delineare i principali campi della ricerca di K. Friis-Jensen.
description: Classiconorroena, V. 31 (2013)
Connecting Network Science and Information Theory
Creators: name: de Arruda, Henrique F.
name: Silva, Filipi N.
name: Comin, Cesar H.
name: Amancio, Diego R.
name: Costa, Luciano da F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Information Theory (cs.IT)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: A framework integrating information theory and network science is proposed, giving rise to a potentially new area. By incorporating and integrating concepts such as complexity, coding, topological projections and network dynamics, the proposed network-based framework paves the way not only to extending traditional information science, but also to modeling, characterizing and analyzing a broad class of real-world problems, from language communication to DNA coding. Basically, an original network is supposed to be transmitted, with or without compaction, through a sequence of symbols or time-series obtained by sampling its topology by some network dynamics, such as random walks. We show that the degree of compression is ultimately related to the ability to predict the frequency of symbols based on the topology of the original network and the adopted dynamics. The potential of the proposed approach is illustrated with respect to the efficiency of transmitting several types of topologies by using a variety of random walks. Several interesting results are obtained, including the behavior of the Barabási-Albert model oscillating between high and low performance depending on the considered dynamics, and the distinct performances obtained for two geographical models.
Centralità, alterità, integrazione : appunti sulla conversione del Nord scandinavo
Creators: name: Santini, Carlo
Publisher: name: Classiconorroena
Year: 2014

description: La conversione degli popoli dell’area geografica della Scandinavia (e delle sue colonizzazioni in Islanda e in Groenlandia) si presenta con un complesso mosaico di situazioni e motivi desunti da testi storici e letterari che si propone di ricondurre ad unità nell’ambito dell’opposizione ‘centro’/’periferia’ e degli attributi ad essa correlati.
description: Classiconorroena, V. 31 (2013)
title: Древние истоки образа Афсати в охотничьей мифологии осетин
Creators: name: Плаева, З. К.
Publisher: name: Реноме
Year: 2022

description: Статья посвящена истокам культа осетинского покровителя охоты Афсати, который был одним из самых важных и самых древних мифологических персонажей. Он занимает важное место и в нартовском эпосе осетин. В частности, именно от Афсати чудесную золотую свирель получает Аца, отец доблестного нарта Ацамаза. Исследователи пришли к выводу, что культ небожителя Афсати проник к балкарцам, карачаевцам, сванам и абхазам именно из Осетии. По поводу происхождения его имени выдвигались различные версии. Н. Я. Марр связывал происхождение Афсати с фрако-фригийским, а затем и армянским рогатым божеством плодородия и земледелия Сабазием. Эту этимологию так или иначе поддерживал В. И. Абаев, считавший, что образ мужского покровителя охоты чужд иранской мифологии и проник в осетинский эпос из кавказского субстрата. Различные предположения по этому поводу выдвигали О. Н. Трубачев, Ю. А. Дзиццойты и другие исследователи. В качестве прототипа персонажа осетинской мифологии предлагался даже образ христианского святого Евстафия Плакиды, который, согласно легенде, охотился на чудесного оленя. Т. А. Гуриевым была выдвинута версия происхождения имени осетинского покровителя охоты от индийского Paśupati — буквально «хозяин диких животных». Ф. Корнильо было предложено рассматривать имя Æfsati как эволюцию престижного древнего индоиранского титула *wispati — «господин родовой общины». Действительно, многочисленные археологические данные свидетельствуют о том, что культ Афсати был присущ уже поздним сарматам. Он фиксируется у многих ираноязычных этносов эпохи раннего железа. Его следы встречаются в искусстве кобанской археологической культуры, которую сейчас принято считать индоиранской. Автор указывает на то, что образ осетинского Афсати перекликается со знаменитым кельтским рогатым божеством леса и лесных животных, покровителем оленей Цернунном, чей культ дожил до позднего Средневековья как почитание Герна-охотника, известное Вильяму Шекспиру. Многие черты сближают Афсати и Цернунна.
Physical properties of the first quasars
Creators: name: Gallerani, Simona
name: Fan, Xiaohui
name: Maiolino, Roberto
name: Pacucci, Fabio
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Since the beginning of the new millennium, more than 100 $z\sim 6$ quasars have been discovered through several surveys and followed-up with multi-wavelength observations. These data provided a large amount of information on the growth of supermassive black holes at the early epochs, the properties of quasar host galaxies and the joint formation and evolution of these massive systems. We review the properties of the highest-$z$ quasars known so far, especially focusing on some of the most recent results obtained in (sub-)millimeter bands. We discuss key observational challenges and open issues in theoretical models and highlight possible new strategies to improve our understanding of the galaxy-black hole formation and evolution in the early Universe.
description: Accepted for publication in PASA
La battaglia di Brávellir nei Gesta Danorum di Saxo: tipologie comparate e varianti posteriori
Creators: name: Santini, Carlo
Publisher: name: Classiconorroena
Year: 2014

description: La descrizione della (mitica) battaglia di Brávellir nei Gesta Danorum di Saxo parte dall’ipotesi dell’idea di battaglia ‘per eccellenza’ come istanza catalogica e ineludibile occasione di presenza degli eroi tutti di una generazione appartenente al contesto culturale norreno, nonché come esposizione di tecniche e ‘aristeiai’, di interventi divini e di morte di un re vecchio e cieco in un profilo di somiglianze attestate in testi della poesia epica indoeuropea. Il complesso dei motivi e figure posto in luce nel grandioso e psicologicamente riuscito quadro dell’autore danese troverà poi eco secondo prospettive differenti nelle raffigurazioni rinascimentali di Alberto Krantz e di Giovanni ed Olao Magno.
description: Classiconorroena, V. 30 (2012)
Letter from Goldsworthy Lowes Dickinson to Herbert Read, May 22, [1923?]
Creators: name: Dickinson, G. Lowes (Goldsworthy Lowes), 1862-1932
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Read, Herbert, 1893-1968
valueUri: http://id.worldcat.org/fast/1754386
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Political scientists
valueUri: http://id.worldcat.org/fast/1069858
subject: Philosophers
valueUri: http://id.worldcat.org/fast/1060746
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Dickinson, G. Lowes (Goldsworthy Lowes), 1862-1932
valueUri: http://id.worldcat.org/fast/9028

description: Part of a collection of correspondence between Herbert Read and Goldsworthy Lowes Dickinson (British political scientist and philosopher, associated with the Bloomsbury Group). Lowes Dickinson inquires if Read likes hearing from people about his poems and discusses their rhythmical form. Also included is Read's typed reply as an enclosure.
BPS Graphs: From Spectral Networks to BPS Quivers
Creators: name: Gabella, Maxime
name: Longhi, Pietro
name: Park, Chan Y.
name: Yamazaki, Masahito
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We define "BPS graphs" on punctured Riemann surfaces associated with $A_{N-1}$ theories of class $\mathcal{S}$. BPS graphs provide a bridge between two powerful frameworks for studying the spectrum of BPS states: spectral networks and BPS quivers. They arise from degenerate spectral networks at maximal intersections of walls of marginal stability on the Coulomb branch. While the BPS spectrum is ill-defined at such intersections, a BPS graph captures a useful basis of elementary BPS states. The topology of a BPS graph encodes a BPS quiver, even for higher-rank theories and for theories with certain partial punctures. BPS graphs lead to a geometric realization of the combinatorics of Fock-Goncharov $N$-triangulations and generalize them in several ways.
description: 48 pages, 44 figures
SANS contrast variation study of magnetoferritin structure at various iron loading
Creators: name: Melnikova, Lucia
name: Petrenko, Viktor I.
name: Avdeev, Mikhail V.
name: Ivankov, Oleksandr I.
name: Bulavin, Leonid A.
name: Garamus, Vasil M.
name: Almásy, László
name: Mitroova, Zuzana
name: Kopcansky, Peter
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetoferritin, a synthetic derivate of iron storage protein - ferritin, has been synthesized with different iron oxide loading values. Small-angle neutron scattering experiments were applied to study the structure of magnetoferritin solutions using contrast variation method by varying the light to heavy water ratio of the solvent. Higher iron loading leads to increasing of the neutron scattering length density of magnetoferritin and also to the increase of the polydispersity of complexes. The formation of the magnetic core and the variation of the protein shell structure upon iron loading are concluded.
Optical excess of dim isolated neutron stars
Creators: name: Ertan, Unal
name: Caliskan, Sirin
name: Alpar, M. Ali
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The optical excess in the spectra of dim isolated neutron stars (XDINs) is a significant fraction of their rotational energy loss-rate. This is strikingly different from the situation in isolated radio pulsars. We investigate this problem in the framework of the fallback disc model. The optical spectra can be powered by magnetic stresses on the innermost disc matter, as the energy dissipated is emitted as blackbody radiation mainly from the inner rim of the disc. In the fallback disc model, XDINs are the sources evolving in the propeller phase with similar torque mechanisms. In this this model, the ratio of the total magnetic work that heats up the inner disc matter is expected to be similar for different XDINs. Optical luminosities that are calculated consistently with the the optical spectra and the theoretical constraints on the inner disc radii give very similar ratios of the optical luminosity to the rotational energy loss rate for all these sources. These ratios indicate that a significant fraction of the magnetic torque heats up the disc matter while the remaining fraction expels disc matter from the system. For XDINs, the contribution of heating by X-ray irradiation to the optical luminosity is negligible in comparison with the magnetic heating. The correlation we expect between the optical luminosities and the rotational energy loss-rates of XDINs can be a property of the systems with low X-ray luminosities, in particular those in the propeller phase.
description: 7 pages, 6 figures. Accepted for publication in MNRAS
Padé approximant for the equation of motion of a supernova remnant
Creators: name: Zaninetti, Lorenzo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this paper we derive three equations of motion for a supernova remnant (SNR) in the framework of the thin layer approximation using the Padé approximant. The circumstellar medium is assumed to follow a density profile of either an exponential type, a Gaussian type, or a Lane--Emden ($n=5$) type. The three equations of motion are applied to four SNRs: Tycho, Cas A, Cygnus loop, and SN~1006. The percentage error of the Padé approximated solution is always less than $10\%$. The theoretical decrease of the velocity over ten years for SNRs is evaluated.
description: 10 pages
title: Ð¥ÑÐ´Ð¾Ð¶ÐµÑÑÐ²ÐµÐ½Ð½ÑÐµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÐµÐ¼Ñ Ð°Ð¿Ð¾ÐºÐ°Ð»Ð¸Ð¿ÑÐ¸ÑÐ° Ð² Ð½Ð°ÑÑÐ½Ð¾-ÑÐ°Ð½ÑÐ°ÑÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð»Ð¸ÑÐµÑÐ°ÑÑÑÐµ XX Ð²ÐµÐºÐ° (Ð½Ð° Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ðµ ÑÐ²Ð¾ÑÑÐµÑÑÐ²Ð° Ð. ÐÐ¾Ð½Ð½ÐµÐ³ÑÑÐ° Ð¸ ÐÐ¶. Ð£Ð¸Ð½Ð´ÐµÐ¼Ð°)
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Literary features of apocalypse in science fiction of XX century (based on the novels of K. Vonnegut and J. Wyndham)
Creators: name: ÐÐµÑÐµÑÐ¾Ð²Ð°, ÐÐ½Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: Ð½Ð°ÑÑÐ½Ð°Ñ ÑÐ°Ð½ÑÐ°ÑÑÐ¸ÐºÐ°
Ð°Ð¿Ð¾ÐºÐ°Ð»Ð¸Ð¿ÑÐ¸Ñ
"ÐÐµÐ½Ñ ÑÑÐ¸ÑÑÐ¸Ð´Ð¾Ð²"
"ÐÐ°Ð»Ð°Ð¿Ð°Ð³Ð¾ÑÑ"
Ñ ÑÐ´Ð¾Ð¶ÐµÑÑÐ²ÐµÐ½Ð½Ð¾ÑÑÑ
science fiction
apocalypse
"The Day of the Triffids"
"Galapagos"
artistic characterization

description: ÐÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð°Ð½Ð°Ð»Ð¸Ð·Ñ ÑÐ°ÑÐºÑÑÑÐ¸Ñ ÑÐµÐ¼Ñ Ð°Ð¿Ð¾ÐºÐ°Ð»Ð¸Ð¿ÑÐ¸ÑÐ° Ñ ÑÑÐ´Ð¾Ð¶ÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð¹ ÑÐ¾ÑÐºÐ¸ Ð·ÑÐµÐ½Ð¸Ñ Ð² Ð½Ð°ÑÑÐ½Ð¾-ÑÐ°Ð½ÑÐ°ÑÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐ¾Ð¼Ð°Ð½Ð°Ñ Â«ÐÐµÐ½Ñ ÑÑÐ¸ÑÑÐ¸Ð´Ð¾Ð²Â» ÐÐ¶Ð¾Ð½Ð° Ð£Ð¸Ð½Ð´ÐµÐ¼Ð° Ð¸ Â«ÐÐ°Ð»Ð°Ð¿Ð°Ð³Ð¾ÑÑÂ» ÐÑÑÑÐ° ÐÐ¾Ð½Ð½ÐµÐ³ÑÑÐ°. Ð ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾Ð½ÑÑÐ¸Ñ Â«Ð½Ð°ÑÑÐ½Ð°Ñ ÑÐ°Ð½ÑÐ°ÑÑÐ¸ÐºÐ°Â» Ð¸ Â«Ð°Ð¿Ð¾ÐºÐ°Ð»Ð¸Ð¿ÑÐ¸ÑÂ» ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÑÑÑÑ Ñ Ð»Ð¸ÑÐµÑÐ°ÑÑÑÐ½Ð¾Ð¹ Ð¸ Ð¸ÑÑÐ¾ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ¾ÑÐµÐº Ð·ÑÐµÐ½Ð¸Ñ. ÐÑÐ¾Ð¼Ðµ ÑÐ¾Ð³Ð¾, Ð² ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½ Ð¾Ð±Ð·Ð¾Ñ Ð±Ð¸Ð¾Ð³ÑÐ°ÑÐ¸Ð¸ Ð¸ ÑÐ²Ð¾ÑÑÐµÑÐºÐ¾Ð³Ð¾ Ð¼ÐµÑÐ¾Ð´Ð° Ð£Ð¸Ð½Ð´ÐµÐ¼Ð° Ð¸ ÐÐ¾Ð½Ð½ÐµÐ³ÑÑÐ°. ÐÐ»Ð°Ð³Ð¾Ð´Ð°ÑÑ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½Ð¾Ð¹ Ð² ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ°ÑÑÐ¸ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸, Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÑÑ Ð³Ð»Ð°Ð²Ñ ÑÐ¾ÑÑÐ°Ð²Ð»ÑÐµÑ Ð°Ð½Ð°Ð»Ð¸Ð· Ð²ÑÑÐµÑÐ¿Ð¾Ð¼ÑÐ½ÑÑÑÑ ÑÐ¾Ð¼Ð°Ð½Ð¾Ð², Ð° ÑÐ°ÐºÐ¶Ðµ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ Ð¸ ÑÐ¾Ð¿Ð¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ ÑÐ²Ð¾ÐµÐ¾Ð±ÑÐ°Ð·Ð¸Ñ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð½Ð° Ð¸Ñ ÑÑÑÐ°Ð½Ð¸ÑÐ°Ñ Ð¶Ð°Ð½ÑÐ° Ð°Ð¿Ð¾ÐºÐ°Ð»Ð¸Ð¿ÑÐ¸ÑÐ°.
description: The thesis is devoted to analyzing the ways the topic of apocalypse is characterized from an artistic point of view in science fiction novels âThe Day of the Triffidsâ by John Wyndham and âGalapagosâ by Kurt Vonnegut. During the research, the concepts of âscience fictionâ and âapocalypseâ are given literary and historical contexts. Moreover, the thesis presents the review of Wyndham and Vonnegutâs biographies and artistic methods. The second part of the research is focused on the analysis of two novels as well as the study of similarities and differences between their unique portrayals of apocalypse.
Cuts from residues: the one-loop case
Creators: name: Abreu, Samuel
name: Britto, Ruth
name: Duhr, Claude
name: Gardi, Einan
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the multivariate residue calculus of Leray, we give a precise definition of the notion of a cut Feynman integral in dimensional regularization, as a residue evaluated on the variety where some of the propagators are put on shell. These are naturally associated to Landau singularities of the first type. Focusing on the one-loop case, we give an explicit parametrization to compute such cut integrals, with which we study some of their properties and list explicit results for maximal and next-to-maximal cuts. By analyzing homology groups, we show that cut integrals associated to Landau singularities of the second type are specific combinations of the usual cut integrals, and we obtain linear relations among different cuts of the same integral. We also show that all one-loop Feynman integrals and their cuts belong to the same class of functions, which can be written as parametric integrals.
description: v2: fixed minor typos in the normalisation of cut integrals
Equations of Motion as Constraints: Superselection Rules, Ward Identities
Creators: name: Asorey, M.
name: Balachandran, A. P.
name: Lizzi, F.
name: Marmo, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The meaning of local observables is poorly understood in gauge theories, not to speak of quantum gravity. As a step towards a better understanding we study asymptotic (infrared) transformation in local quantum physics. Our observables are smeared by test functions, at first vanishing at infinity. In this context we show that the equations of motion can be seen as constraints, which generate a group, the group of space and time dependent gauge transformations.This is one of the main points of the paper. Infrared nontrivial effects are captured allowing test functions which do not vanish at infinity. These extended operators generate a larger group. The quotient of the two groups generate superselection sectors, which differentiate different infrared sectors. The BMS group changes the superselection sector, a result long known for its Lorentz subgroup. It is hence spontaneously broken. Ward identities implied by the gauge invariance of the S-matrix generalize the standard results and lead to charge conservation and low energy theorems. Their validity does not require Lorentz invariance.
description: 21 pages, 1 reference added and typos corrected
En route to fusion: confinement state as a waveleton
Creators: name: Fedorova, Antonina N.
name: Zeitlin, Michael G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A fast and efficient numerical-analytical approach is proposed for description of complex behavior in non-equilibrium ensembles in the BBGKY framework. We construct the multiscale representation for hierarchy of partition functions by means of the variational approach and multiresolution decomposition. Numerical modeling shows the creation of various internal structures from fundamental localized (eigen)modes. These patterns determine the behavior of plasma. The localized (meta) stable pattern (waveleton) is a possible model for energy confinement state (fusion) in plasma.
description: Short sketch conference version of arXiv:physics/0603167
Scarica l'intero numero 17 (2001) (21.000 MB)
Creators: name: (A Cura Di), Redazione Di Classiconorroena
Publisher: name: Classiconorroena
Year: 2014

description: Scarica l'intero numero 17 (2001)
description: Classiconorroena, V. 17 (2001)
Transversals in Latin arrays with many distinct symbols
Creators: name: Best, Darcy
name: Hendrey, Kevin
name: Wanless, Ian M.
name: Wilson, Tim E.
name: Wood, David R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B15

description: An array is row-Latin if no symbol is repeated within any row. An array is Latin if it and its transpose are both row-Latin. A transversal in an $n\times n$ array is a selection of $n$ different symbols from different rows and different columns. We prove that every $n \times n$ Latin array containing at least $(2-\sqrt{2}) n^2$ distinct symbols has a transversal. Also, every $n \times n$ row-Latin array containing at least $\frac14(5-\sqrt{5})n^2$ distinct symbols has a transversal. Finally, we show by computation that every Latin array of order $7$ has a transversal, and we describe all smaller Latin arrays that have no transversal.
Triple Regge exchange mechanisms of four-pion continuum production in the $pp \to pp π^{+}π^{-}π^{+}π^{-}$ reaction
Creators: name: Kycia, Radosław
name: Lebiedowicz, Piotr
name: Szczurek, Antoni
name: Turnau, Jacek
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider exclusive multi-peripheral production of four charged pions in proton-proton collisions at high energies with simultaneous exchange of three pomerons/reggeons. The amplitude(s) for the genuine $2 \to 6$ process are written in the Regge approach. The calculation is performed with the help of the GenEx Monte Carlo code. Some corrections at low invariant masses in the two-body subsystems are necessary for application of the Regge formalism. We estimate the corresponding cross section and present differential distributions in rapidity, transverse momenta and two- and four-pion invariant masses. The cross section and the distributions depend on the value of the cut-off parameter of a form factor correcting amplitudes for off-shellness of $t$-channel pions. Rather large cross section is found for the whole phase space ($σ\sim$ 1-5 $μ$b, including absorption corrections). Relatively large four-pion invariant masses are populated in the considered diffractive mechanism compared to other mechanisms discussed so far in the context of four-pion production. We investigate whether the triple Regge exchange processes could be identified with the existing LHC detectors. We consider the case of ATLAS and ALICE cuts. The ATLAS (or CMS) has better chances to identify the process in the region of large invariant masses $M_{4 π} > 10$ GeV. In the case of the ALICE experiment the considered mechanism competes with other mechanisms (production of $σσ$, $ρρ$ pairs or single resonances) and cannot be unambiguously identified.
description: 30 pages, 25 figures
Scarica l'intero numero 7 (1996) (14 MB)
Creators: name: Intero Numero, Classiconorroena Num. 7 (1996)
Publisher: name: Classiconorroena
Year: 2014

description: Classiconorroena num. 7 (1996)
description: Classiconorroena, V. 7 (1996)
Asteroid Impact Effects And Their Immediate Hazards For Human Populations
Creators: name: Rumpf, Clemens M.
name: Lewis, Hugh G.
name: Atkinson, Peter M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Space Physics (physics.space-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: A set of 50,000 artificial Earth impacting asteroids was used to obtain, for the first time, information about the dominance of individual impact effects such as wind blast, overpressure shock, thermal radiation, cratering, seismic shaking, ejecta deposition and tsunami for the loss of human life during an impact event for impactor sizes between 15 to 400 m and how the dominance of impact effects changes over size. Information about the dominance of each impact effect can enable disaster managers to plan for the most relevant effects in the event of an asteroid impact. Furthermore, the analysis of average casualty numbers per impactor shows that there is a significant difference in expected loss for airburst and surface impacts and that the average impact over land is an order of magnitude more dangerous than one over water.
description: Accepted in Geophysical Research Letters on 19.3.2017 http://onlinelibrary.wiley.com/doi/10.1002/2017GL073191/full 5 figures, 17 pages (including supporting information)
Comments on the Random Thirring Model
Creators: name: Berkooz, Micha
name: Narayan, Prithvi
name: Rozali, Moshe
name: Simón, Joan
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Thirring model with random couplings is a translationally invariant generalisation of the SYK model to 1+1 dimensions, which is tractable in the large N limit. We compute its two point function, at large distances, for any strength of the random coupling. For a given realisation, the couplings contain both irrelevant and relevant marginal operators, but statistically, in the large N limit, the random couplings are overall always marginally irrelevant, in sharp distinction to the usual Thirring model. We show the leading term to the $β$ function in conformal perturbation theory, which is quadratic in the couplings, vanishes, while its usually subleading cubic term matches our RG flow.
description: 27 pages. Minor changes
Classiconorroena Num. 5 (1995) Recensioni
Creators: name: Classiconorroena 5 (1995), Recensioni
Publisher: name: Classiconorroena
Year: 2014

description: Classiconorroena Num. 5 (1995) Recensioni
description: Classiconorroena, V. 5 (1995)
An algebraic construction of duality functions for the stochastic U_q(A_n^{(1)}) vertex model and its degenerations
Creators: name: Kuan, Jeffrey
Publisher: name: arXiv
Year: 2017
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: A recent paper \cite{KMMO} introduced the stochastic U_q(A_n^{(1)}) vertex model. The stochastic S-matrix is related to the R-matrix of the quantum group U_q(A_n^{(1)}) by a gauge transformation. We will show that a certain function D^+_μ intertwines with the transfer matrix and its space reversal. When interpreting the transfer matrix as the transition matrix of a discrete-time totally asymmetric particle system on the one-dimensional lattice Z, the function D^+_μ becomes a Markov duality function D_μ which only depends on q and the vertical spin parameters μ_x. By considering degenerations in the spectral parameter, the duality results also hold on a finite lattice with closed boundary conditions, and for a continuous-time degeneration. This duality function had previously appeared in a multi-species ASEP(q,j) process. The proof here uses that the R-matrix intertwines with the co-product, but does not explicitly use the Yang-Baxter equation. It will also be shown that the stochastic U_q(A_n^{(1)}) is a multi-species version of a stochastic vertex model studied in \cite{BP,CP}. This will be done by generalizing the fusion process of \cite{CP} and showing that it matches the fusion of \cite{KRL} up to the gauge transformation. We also show, by direct computation, that the multi-species q-Hahn Boson process (which arises at a special value of the spectral parameter) also satisfies duality with respect to D_0, generalizing the single-species result of \cite{C}.
description: 55 pages, 6 figures; Version 2 updates citations
Electromagnetic coupling of strongly non-local quantum mechanics
Creators: name: Modanese, G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Although standard quantum mechanics has some non-local features, the probability current of the Schrödinger equation is locally conserved, and this allows minimal electromagnetic coupling. For some important extensions of the Schrödinger equation, however, the probability current is not locally conserved. We show that in these cases the correct electromagnetic coupling requires a relatively simple extension of Maxwell theory which has been known for some time and recently improved by covariant integration of a scalar degree of freedom. We discuss some general properties of the solutions and examine in particular the case of an oscillating dipolar source. Remarkable mathematical and physical differences emerge with respect to Maxwell theory, as a consequence of additional current terms present in the equations for $\nabla \cdot \textbf{E}$ and $\nabla \times \textbf{B}$. Several possible applications are mentioned.
description: 10 pages, 2 figures
GPU Accelerated Explicit Time Integration Methods for Electro-Quasistatic Fields
Creators: name: Richter, Christian
name: Schöps, Sebastian
name: Clemens, Markus
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: G.1.8
subject: 65M60, 78A30, 78M10, 65Y05

description: Electro-quasistatic field problems involving nonlinear materials are commonly discretized in space using finite elements. In this paper, it is proposed to solve the resulting system of ordinary differential equations by an explicit Runge-Kutta-Chebyshev time-integration scheme. This mitigates the need for Newton-Raphson iterations, as they are necessary within fully implicit time integration schemes. However, the electro-quasistatic system of ordinary differential equations has a Laplace-type mass matrix such that parts of the explicit time-integration scheme remain implicit. An iterative solver with constant preconditioner is shown to efficiently solve the resulting multiple right-hand side problem. This approach allows an efficient parallel implementation on a system featuring multiple graphic processing units.
description: 4 pages, 5 figures