cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Final Design and On-Sky Testing of the iLocater SX Acquisition Camera: Broadband Single-Mode Fiber Coupling
Creators: name: Crass, Jonathan
name: Bechter, Andrew
name: Sands, Brian
name: King, David L.
name: Ketterer, Ryan
name: Engstrom, Matthew
name: Hamper, Randall
name: Kopon, Derek
name: Smous, James
name: Crepp, Justin R.
name: Montoya, Manny
name: Durney, Oli
name: Cavalieri, David
name: Reynolds, Robert
name: Vansickle, Michael
name: Onuma, Eleanya
name: Thomes, Joseph
name: Mullin, Scott
name: Shelton, Chris
name: Wallace, Kent
name: Bechter, Eric
name: Vaz, Amali
name: Power, Jennifer
name: Rahmer, Gustavo
name: Ertel, Steve
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Enabling efficient injection of light into single-mode fibers (SMFs) is a key requirement in realizing diffraction-limited astronomical spectroscopy on ground-based telescopes. SMF-fed spectrographs, facilitated by the use of adaptive optics (AO), offer distinct advantages over comparable seeing-limited designs, including higher spectral resolution within a compact and stable instrument volume, and a telescope independent spectrograph design. iLocater is an extremely precise radial velocity (EPRV) spectrograph being built for the Large Binocular Telescope (LBT). We have designed and built the front-end fiber injection system, or acquisition camera, for the SX (left) primary mirror of the LBT. The instrument was installed in 2019 and underwent on-sky commissioning and performance assessment. In this paper, we present the instrument requirements, acquisition camera design, as well as results from first-light measurements. Broadband single-mode fiber coupling in excess of 35% (absolute) in the near-infrared (0.97-1.31μm) was achieved across a range of target magnitudes, spectral types, and observing conditions. Successful demonstration of on-sky performance represents both a major milestone in the development of iLocater and in making efficient ground-based SMF-fed astronomical instruments a reality.
description: 18 pages, 17 figures. Accepted for publication in MNRAS
Are Lyα emitters segregated in protoclusters regions?
Creators: name: Hough, T.
name: Gurung-López, S.
name: Orsi, A.
name: Cora, S. A.
name: Lacey, C. G.
name: Baugh, C. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The presence of neutral hydrogen in the inter-stellar medium (ISM) and inter-galactic medium (IGM) induces radiative transfer (RT) effects on Lyα photons which affect the observability of Lyα emitters (LAEs). We use the GALFORM semi-analytic model of galaxy formation and evolution to analyse how these effects shape the spatial distribution of LAEs with respect to Hα emitters (HAEs) around high density regions at high redshift. We find that when a large sample of protoclusters is considered, HAEs showing also Lyα emission (HAEs+LAEs) populate the same regions as those that do not display the Lyα line at $z=2.2$. We compare against the protocluster USS1558-003, one of the most massive protoclusters located at $z=2.53$. Our results indicate that the strong depletion of HAEs+LAEs present in the high density regions of USS1558-003 may be due to cosmic variance. We find that at $z=2.2$ and $z=3.0$, RT of the ISM produces a strong decline ($30$-$50$ per cent) of the clustering amplitude of HAEs+LAEs with respect to HAEs towards the protoclusters centre. At $z=5.7$, given the early evolutionary state of protoclusters and galaxies, the clustering of HAEs+LAEs has a smaller variation ($10$-$20$ per cent) towards the protoclusters centre. Depending on the equivalent width and luminosity criteria of the emission-line galaxy sample, the IGM can have a mild or a null effect on galaxy properties and clustering in high density regions.
description: 12 pages, 8 figures, accepted for publication in MNRAS
Η διαχείριση της γής και χρήση των GIS
Creators: name: Σάρρα, Παρασκευή Παύλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Διαχείριση γης
Γεωπληροφοριακά συστήματα
Real estate
GIS

description: Σκοπός της διπλωματικής είναι η έρευνα στη διαχείριση της γης με τη χρήση των γεωπληροφοριακών συστημάτων. Μελετάται η έννοια του Ακίνητου, η διαμόρφωση της τιμής του, οι παράγοντες που επηρεάζουν την αξία των ακινήτων
description: The scope of my thesis is the management of real estate with the use of GIS. We focus on the purpose of land development, the conditions which formulate the price and the purposes which influence the cost of the property
Dirac Operator in Matrix Geometry
Creators: name: Avramidi, Ivan G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 58J50; 58J35

description: We review the construction of the Dirac operator and its properties in Riemannian geometry and show how the asymptotic expansion of the trace of the heat kernel determines the spectral invariants of the Dirac operator and its index. We also point out that the Einstein-Hilbert functional can be obtained as a linear combination of the first two spectral invariants of the Dirac operator. Next, we report on our previous attempts to generalize the notion of the Dirac operator to the case of Matrix Geometry, when instead of a Riemannian metric there is a matrix valued self-adjoint symmetric two-tensor that plays a role of a ``non-commutative'' metric. We construct invariant first-order and second-order self-adjoint elliptic partial differential operators, that can be called ``non-commutative'' Dirac operator and non-commutative Laplace operator. We construct the corresponding heat kernel for the non-commutative Laplace type operator and compute its first two spectral invariants. A linear combination of these two spectral invariants gives a functional that can be considered as a non-commutative generalization of the Einstein-Hilbert action.
description: a review paper, 45 pages
Accelerators R&D
Creators: name: C. Biscari
Publisher: name: INFN Open Access Repository
Year: 2009

description: R&D on particle accelerators dedicated to high energy physics applications are reviewed. Progress in particle colliders follows two different paths, one aiming at increasing the available energy in collision, the other at increasing the luminosity. Present collider
performances and their plans on both fronts for the next future are described, together with the ideas and the technologies being developed for the projects that will be built after LHC. Neutrino beam facilities and plans for plasma wakefield accelerators are mentioned.
Quantum and Classical Glass Transitions in $Li Ho_x Y_{1-x} F_4$
Creators: name: Ancona-Torres, C.
name: Silevitch, D. M.
name: Aeppli, G.
name: Rosenbaum, T. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: When performed in the proper low field, low frequency limits, measurements of the dynamics and the nonlinear susceptibility in the model Ising magnet in transverse field, $\text{LiHo}_x\text{Y}_{1-x}\text{F}_4$, prove the existence of a spin glass transition for $x$ = 0.167 and 0.198. The classical behavior tracks for the two concentrations, but the behavior in the quantum regime at large transverse fields differs because of the competing effects of quantum entanglement and random fields.
description: 5 pages, 5 figures. Updated figure 3 with corrected calibration information for thermometry
A new feedback cycle in the archetypal cooling flow group NGC 5044
Creators: name: Schellenberger, Gerrit
name: David, Laurence P.
name: Vrtilek, Jan
name: O'Sullivan, Ewan
name: Giacintucci, Simona
name: Forman, William
name: Jones, Christine
name: Venturi, Tiziana
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The fate of cooling gas in the centers of galaxy clusters and groups is still not well understood, as is also the case for the complex process of triggering active galactic nucleus (AGN) outbursts in their central dominant galaxies, and the consequent re-heating of the gas by the AGN jets. With the largest known reservoir of cold molecular gas of any group-dominant galaxy and three epochs of AGN activity visible as cavities in its hot gas, NGC 5044 is an ideal system in which to study the cooling/AGN feedback cycle at the group scale. We present VLBA observations of NGC 5044 to ascertain the current state of the central AGN. We find a compact core and two small jets aligned almost in the plane of the sky, and in the orthogonal direction to the location of cavities. We construct the radio/sub-mm spectral energy distribution (SED) over more than three orders of magnitude. We find that below 5 GHz the spectrum is best fit by a self-absorbed continuous injection model representing emission coming from the jets, while the higher frequencies show clear signs of an advection dominated accretion flow. We derive a black hole mass and accretion rate consistent with independent measurements. We conclude that the age of the jets is much younger than the innermost cavities, marking the start of a new feedback cycle.
description: accepted for publication in ApJ; 15 pages; 4 figures
Transcription of a story about an encounter with a skunk
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-300120-04: Transcription of a story about Verdena's uncle's encounter with a skunk, file VP-200107-04, from the beginning of the story at 40:10 to the end of the story at 41:44.
Large deviations and a Kramers' type law for self-stabilizing diffusions
Creators: name: Herrmann, Samuel
name: Imkeller, Peter
name: Peithmann, Dierk
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F10, 60H10 (Primary) 60K35, 37H10, 82C22 (Secondary)

description: We investigate exit times from domains of attraction for the motion of a self-stabilized particle traveling in a geometric (potential type) landscape and perturbed by Brownian noise of small amplitude. Self-stabilization is the effect of including an ensemble-average attraction in addition to the usual state-dependent drift, where the particle is supposed to be suspended in a large population of identical ones. A Kramers' type law for the particle's exit from the potential's domains of attraction and a large deviations principle for the self-stabilizing diffusion are proved. It turns out that the exit law for the self-stabilizing diffusion coincides with the exit law of a potential diffusion without self-stabilization and a drift component perturbed by average attraction. We show that self-stabilization may substantially delay the exit from domains of attraction, and that the exit location may be completely different.
description: Published in at http://dx.doi.org/10.1214/07-AAP489 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Measurements of the z ~ 6 Intergalactic Medium Optical Depth and Transmission Spikes Using a New z > 6.3 Quasar Sample
Creators: name: Yang, Jinyi
name: Wang, Feige
name: Fan, Xiaohui
name: Hennawi, Joseph F.
name: Davies, Frederick B.
name: Yue, Minghao
name: Eilers, Anna-Christina
name: Farina, Emanuele P.
name: Wu, Xue-Bing
name: Bian, Fuyan
name: Pacucci, Fabio
name: Lee, Khee-Gan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report new measurements of the intergalactic medium (IGM) Ly$α$ and Ly$β$ effective optical depth at $5.35.3$, $τ\propto(1+z)^{8.6\pm1.0}$. We then estimate the observed Ly$β$ effective optical depth using Ly$β$ forests and convert them to Ly$α$ optical depth for comparison, which provides additional constraints on the evolution of the IGM optical depth. The Ly$β$-based measurements are generally in agreement with the best-fit evolution obtained from Ly$α$ forests. Using this new sample, we identify 389 Ly$α$ and 50 Ly$β$ transmission spikes at $5.5
description: 34 pages, 14 figures. Accepted for publication in ApJ
The effect of overexpression of activated rasB, rasC and rasS on Dictyostelium discoideum
Creators: name: Delehanty, Megan Catherine
Publisher: name: University of British Columbia
Year: 2009

description: Dictyostelium discoideum contains at least 5 ras genes. It had been previously demonstrated that the expression of an activated rasG gene in D. discoideum resulted in cells which were unable to aggregate and a subset of which had a large, flattened morphology (Khosla et al, 1996. Mol. and Cell. Biol. 16: 4156-62). To investigate the role of the rasB, rasC, and rasS genes, an activating mutation (a glycine to threonine substitution at position 12) was made in each of the genes. The mutated genes were then expressed under the control of the inducible discoidin promoter. Overexpression of the rasC-G12T and rasS-G12T genes produced no evident abnormalities in cell morphology, growth, or development. Thus, rasC and rasS are not functionally equivalent to rasG, although no clues as to their roles in the cell were revealed. Overexpression of the rasB-G12T gene resulted in the appearance of morphologically aberrent amoebae: a large proportion of the cells were large and flat with an increase in cell surface projections known as crowns. These cells also became multinucleate and failed to divide by traction-mediated cytofission when grown on a surface. The response of these cells to nutrient stimulation and to azide were normal, as was their motility. Growth and development of the cells was unaffected by overexpression of rasB-G12T. These data suggest that the defects observed in the rasB-G12T cells are due to altered regulation of cell division processes since other actin and myosin-dependent processes are unimpaired. The growth and developmental defects caused by overexpression of rasG-G12T were not seen in the rasB-Gl2T cells. Comparison of the morphological phenotypes of rasB-G12T and rasG-G12T cells revealed that the rasB-G12T cells were, on average, larger and more highly multinucleate than the rasG-GI2T cells. The predominant actin-based cell suface structure seen on each of the two was also different: rasB-G12T cells frequently possessed crowns, while rasG-G12T cells more commonly displayed filopodia. Thus, it appears that rasB and rasG have at least some distinct roles in the cell, although they may overlap in some cellular functions.
Shear viscosity of two-dimensional Yukawa systems in liquid state
Creators: name: Liu, Bin
name: Goree, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The shear viscosity of a two-dimensional (2D) liquid was calculated using equilibrium molecular dynamics simulations with a Yukawa potential. The shear viscosity has a minimum, at a Coulomb coupling parameter of about 17, arising from the temperature dependence of the kinetic and potential contributions. Previous calculations of 2D viscosity were less extensive, and for a different potential. The stress autocorrelation function was found to decay rapidly, contrary to some earlier work. These results are useful for 2D condensed matter systems and are compared to a recent dusty plasma experiment.
description: 3 figures
LATEST TOURNAISIAN (EARLY CARBONIFEROUS) CONODONTS FROM THE TABAI LIMESTONE, TIRAH, NORTHWESTERN PAKISTAN
Creators: name: KHAN, FAZL-I-RABBI
name: SAHADAT-UR-REHAMAN,
name: MAWSON, RUTH
name: IHSAN AFRIDI, MOHAMMED
Publisher: name: Università degli Studi di Milano
Year: 2004

description: A new stratigraphic unit, the Tabai Limestone of the poorly known Tirah area of northwest Pakistan, is one of several Early Carboniferous carbonate units distributed along the North Gondwana margin, some connected with transgressive interludes. The Tabai Limestone has produced latest Tournaisian (Early Carboniferous) conodonts indicative of the middle of the anchoralis-latus Zone.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 110, No 3
GRB050223: A faint Gamma-Ray Burst discovered by Swift
Creators: name: Page, K. L.
name: Rol, E.
name: Levan, A. J.
name: Zhang, B.
name: Osborne, J. P.
name: O'Brien, P. T.
name: Beardmore, A. P.
name: Burrows, D. N.
name: Campana, S.
name: Chincharini, G.
name: Cummings, J. R.
name: Cusumano, G.
name: Gehrels, N.
name: Giommi, P.
name: Goad, M. R.
name: Godet, O.
name: Mangano, V.
name: Tagliaferri, G.
name: Wells, A. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: GRB050223 was discovered by the Swift Gamma-Ray Burst Explorer on 23 February 2005 and was the first Gamma-Ray Burst to be observed by both Swift and XMM-Newton. At the time of writing (May 2005), it has one of the faintest GRB afterglows ever observed. The spacecraft could not slew immediately to the burst, so the first X-ray and optical observations occurred approximately 45 minutes after the trigger. Although no optical emission was found by any instrument, both Swift and XMM-Newton detected the fading X-ray afterglow. Combined data from both of these observatories show the afterglow to be fading monotonically as 0.99 +0.15/-0.12 over a time frame between 45 minutes to 27 hours post-burst. Spectral analysis, allowed largely by the higher through-put of XMM-Newton, implies a power-law with a slope of Gamma=1.75 +0.19/-0.18 and shows no evidence for absorption above the Galactic column of 7 x 10^20 cm^-2. From the X-ray decay and spectral slopes, a low electron power-law index of p = 1.3-1.9 is derived; the slopes also imply that a jet-break has not occured up to 27 hours after the burst. The faintness of GRB050223 may be due to a large jet opening or viewing angle or a high redshift.
description: 6 pages, 5 figures. To be published in MNRAS Letters
MEGAPORELLA NIKLERI N. SP., A NEW CALCAREOUS ALGA (DASYCLADALES) FROM THE UPPER BARREMIAN OF MT. BIOKOVO, CROATIA
Creators: name: , SOKAC
Publisher: name: Università degli Studi di Milano
Year: 2004

description: The genus Megaporella Deloffre & Beun, 1986, is emended, and a new species, Megaporella nikleri n. sp., is established. The species is characterized by vesiculiferous and sporadically phloiophorous branches, arranged in whorls. Their number per whorl is variable and their distribution in consecutive whorls is unequal, giving a picture of a seemingly aspondyl arrangement in tangential section. The new species occurs in Upper Barremian.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 110, No 3
Significant Suppression of Star Formation in Radio-Quiet AGN Host Galaxies with Kiloparsec-Scale Radio Structures
Creators: name: Smith, Krista Lynne
name: Koss, Michael
name: Mushotzky, Richard
name: Wong, O. Ivy
name: Shimizu, T. Taro
name: Ricci, Claudio
name: Ricci, Federica
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We conducted 22~GHz 1" JVLA imaging of 100 radio-quiet X-ray selected AGN from the Swift-BAT survey. We find AGN-driven kiloparsec-scale radio structures inconsistent with pure star formation in 11 AGN. The host galaxies of these AGN lie significantly below the star-forming main sequence, indicating suppressed star formation. While these radio structures tend to be physically small compared to the host galaxy, the global star formation rate of the host is affected. We evaluate the energetics of the radio structures interpreted first as immature radio jets, and then as consequences of an AGN-driven radiative outflow, and compare them to two criteria for successful feedback: the ability to remove the CO-derived molecular gas mass from the galaxy gravitational potential and the kinetic energy transfer to molecular clouds leading to $v_\mathrm{cloud} > σ_*$. In most cases, the jet interpretation is insufficient to provide the energy necessary to cause the star formation suppression. Conversely, the wind interpretation provides ample energy in all but one case. We conclude that it is more likely that the observed suppression of star formation in the global host galaxy is due to ISM interactions of a radiative outflow, rather than a small-scale radio jet.
description: 15 pages, 3 figures, 2 tables. Accepted for publication in the Astrophysical Journal
Αξιοποίηση μη ενεργών αντισεισμικώς μελών των συστημάτων των γεφύρων με απώτερο στόχο τη μείωση των σεισμικών δράσεων σχεδιασμού
Creators: name: Τέγου, Σεβαστή Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Γέφυρα
Ακρόβαθρο
Τοιχώματα
Πλάκα συνεχείας
Αντισεισμικότητα
Λειτουργικότητα
Bridge
Abutment
Walls
Continuity slab
Seismicity
Serviceability

description: Στα πλαίσια της παρούσας εργασίας προτείνεται ένας καινοτόμος μορφολογικώς τύπου ακροβάθρου με δυνατότητες εξυπηρέτησης αφενός των αντισεισμικών και αφετέρου των λειτουργικών αναγκών της γέφυρας. Η καινοτομία συνίσταται στην επέκταση της πλάκας καταστρώματος μεταξύ των πτερυγοτοίχων και την έδραση αυτής επί εγκαρσίων τοιχωμάτων επί των οποίων είναι δυνατόν είτε να ολισθαίνει, είτε να είναι μονολιθικώς συνδεδεμένη με αυτά. Το προτεινόμενο σύστημα διευθετεί καταλλήλως τα λειτουργικά προβλήματα της ανωδομής ενώ παράλληλα προσφέρει σημαντική μείωση των μετακινήσεων του καταστρώματος και κατ' επέκταση ανακούφιση των μεσοβάθρων και των θεμελιώσεων τους. Η αποδοτικότητα του προτεινόμενου συστήματος αξιολογείται με βάση την ποσοστιαία μείωση των μετακινήσεων του καταστρώματος του αναβαθμισμένου συστήματος ως προς τις μετακινήσεις του αρχικού συστήματος.
description: In the present investigation, the accommodation of the in-service and the earthquake resistant requirements of bridges is attempted by an innovative restraining sub-system. The innovation consists in the extension of the continuous deck slab between the wing-walls and its placement on transverse walls on which it is possible either to slide or to be monolithically connected with them. Τhe proposed system regulates suitably the serviceability requirements and reduces the displacements of the deck and respectively the distress of the piers and their foundations. The seismic displacement restraining effect of the proposed technique was determined by calculating the percentage reduction in the movement of the upgraded deck of the bridge compared with the movement of the conventional bridge.
Optimization of telescope focal ratios for MLA-fiber coupled Integral Field Units
Creators: name: Chattopadhyay, Sabyasachi
name: Bershady, Matthew A.
name: Wolf, Marsha J.
name: Smith, andMichael P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We have developed an analytic model for generic image transfer using microlens-coupled fibers to determine the telescope input beam speed that optimizes the lenslet clear aperture and minimizes fiber focal-ratio degradation. Assuming fibers are fed at f/3.5 by the lenslets, our study shows that f/11 is the optimum telescope beam speed to feed a lenslet coupled to a fiber with a 100um diameter core. These considerations are relevant for design of high-efficiency, dedicated survey telescopes that employ lenslet-coupled fiber systems.
ANISIAN TERRESTRIAL SEDIMENTS IN THE BÜKK MOUNTAINS (NE HUNGARY) AND THEIR ROLE IN THE TRIASSIC RIFTING OF THEVARDAR-MELIATA BRANCH OF THE NEO-TETHYS OCEAN
Creators: name: VELLEDITS, FELICITÁSZ
Publisher: name: Università degli Studi di Milano
Year: 2004

description: In recent years detailed sedimentological and biostratigraphical investigations have revealed Anisian terrestrial sediments in three sections of the Bükk Mountains. In the northern part of the mountains fluviatile sediments were recognised while in the southern part lake deposits were observed. Based on the stratigraphical position and microfacies analyses of the resedimented grains, two terrestrial events can be reconstructed. The age of the younger is late Pelsonian-early Illyrian?. This can be correlated with the Richthofen Conglomerate in the Dolomites. The age of the older terrestrial event could not be established exactly but it must have happened either in the Pelsonian or in the Aegean-Bithynian; consequently it may correlate either with the Voltago or with the Piz de Peres Conglomerate in the Dolomites. The terrestrial sediments in the Bükk Mountains are parts of a volcano-sedimentary succession, which is characteristic of the updoming part of a rifting area. Terrestrial sediments in the southern part of the mountains represent the deepest part of the half-grabens, which originated during the course of the rifting. The present paper gives an overview of the Anisian-Lower Ladinian terrestrial sediments in the Southern Alps-Dinarides and considers their formation during the Triassic rifting of the Vardar-Meliata branch of the Neo-Tethys.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 110, No 3
Nonlinear wave interactions in quantum magnetoplasmas
Creators: name: Shukla, P. K.
name: Ali, S.
name: Stenflo, L.
name: Marklund, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Nonlinear interactions involving electrostatic upper-hybrid (UH), ion-cyclotron (IC), lower-hybrid (LH), and Alfven waves in quantum magnetoplasmas are considered. For this purpose, the quantum hydrodynamical equations are used to derive the governing equations for nonlinearly coupled UH, IC, LH, and Alfven waves. The equations are then Fourier analyzed to obtain nonlinear dispersion relations, which admit both decay and modulational instabilities of the UH waves at quantum scales. The growth rates of the instabilities are presented. They can be useful in applications of our work to diagnostics in laboratory and astrophysical settings.
description: 15 pages, to appear in Physics of Plasmas
Re-transcription of unpublished Whilkut texts
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-300120-02: Re-transcription and translation of Whilkut texts transcribed by P.E. Goddard, American Philosophical Society Na20j.1, notebook #1, pp. 91-98.
Η γλώσσα του αστείου
Creators: name: Μισχοπούλου, Αικατερίνη Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Γενική θεωρία του λεκτικού χιούμορ (ΓΘΛΧ)
Ασυμβατότητα-Διευθέτηση της ασυμβατότητας
Αντίθεση σεναρίων
Λογικός μηχανισμός
Αφηγηματική στρατηγική ερώτηση-απάντηση
θεωρία της ασυμβατότητας για το γέλιο
General theory of verbal humor (GTVH)
Incogruity-Resolution of the incongruity
Script opposition
Logical mechanism
Narrative strategy question-answear
The incongruity theory of laughter

description: Στα πλαίσια αυτής της εργασίας γίνεται μια εξέταση της γλώσσας του αστείου που βασίζεται σε ένα σώμα από τριάντα πέντε ανέκδοτα. Ως βασικό εργαλείο χρησιμοποιείται η Γενική Θεωρία του Λεκτικού Χιούμορ (Salvatore Attardo και Victor Raskin, 1991), στο εξής ΓΘΛΧ. Η εργασία βρίσκει τη ΓΘΛΧ σε γενικές γραμμές ικανοποιητική για την ανάλυση του γλωσσικού χιούμορ, ωστόσο εντοπίζει και κάποια θέματα που προσφέρονται για περαιτέρω έρευνα από μελλοντικές εργασίες και είναι τα εξής : 1. ο δυναμικός ρόλος που έχει η αφηγηματική στρατηγική ερώτηση-απάντηση στις περιπτώσεις που το ανέκδοτο, μέσω της ερώτησης, δημιουργεί στη συνομιλήτρια κάποιες προσδοκίες με μοναδικό σκοπό να τις ακυρώσει αργότερα, μέσω της απάντησης και, 2. η υποψία για την ύπαρξη δύο ακόμα (υποκατηγοριών) λογικών μηχανισμών, της "πολλαπλής εστίασης" και της "επικράτησης της εξαίρεσης αντί για τον κανόνα". Στη συνέχεια, εντοπίζονται κάποιες περιπτώσεις γλωσσικών αστείων τις οποίες η ΓΘΛΧ φαίνεται αδύναμη να αναλύσει, όπως είναι τα σαρδάμ, και το αστείο που προκύπτει από την αναπάντεχη συντομία ενός ανέκδοτου. Τέλος, παρουσιάζεται σύντομα μία θεωρία του ευρύτερου φαινομένου χιούμορ, η "θεωρία της Ασυμβατότητας για το Γέλιο" του John Morreall(2007), και φαίνονται τα σημεία στα οποία υπερέχει και στα οποία υστερεί σε σχέση με τη ΓΘΛΧ, όσον αφορά την ανάλυση του γλωσσικού χιούμορ.
description: The present thesis is an attempt to investigate the language of joke, and uses a corpus of thirty five anecdotes to fulfil this aim. The theory we employ for our joke's analysis is the General Theory of Verbal Humor (GTVH, Salvatore Attardo and Victor Raskin, 1991). We find that the GTVH is, in general terms, satisfactory for the analysis of anecdotes. Moreover, we suggest two new points : 1.the narrative strategy question-answer playw a dynamicrole in the production of a joke in these cases, where an anecdote, through its question, raises certain expectations to the listener just in order to cancel them through the answer, and, 2. the suspicion that there are two more logical mechanisms, which we name "multiple focusing" the first, and "prevalence of the exception instead of the rule" the second. Furthermore, we trace a few cases of jokes we believe the GTVH is unable to handle, such are spoonerisms, and the funniness resulting from a joke's unexpected shortness. Finally, we briefly present one theory of humor (not only of linguistic humor this time), the "Incongruity Theory of Laughter" by John Morreall (2007) and discuss it in comparison to the GTVH, as far as the analysis of linguistic humor is concerned.
CHARACTERISTIC OF CREATIVE ACTIONS OF YOUNGER STUDENTS
Creators: name: Zak, A.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: creative actions
spatial combinatorial problems
second and third grade students.

description: The article presents a study of the peculiarities of the creative actions of second and third grade students, related to the independent formation of spatial-combinatorial problems. The methods of formation of problems are characterized: formal, basic, productive and original. The quantitative distribution of the marked methods among students of each class is shown.
PLIO-PLEISTOCENE FOSSIL VERTEBRATES OF MONTE TUTTAVISTA (OROSEI, EASTERN SARDINIA, ITALY), AN OVERVIEW
Creators: name: ABBAZZI, LAURA
name: ANGELONE, CHIARA
name: ARCA, MARISA
name: BARISONE, GIANCARLO
name: BEDETTI, CLAUDIA
name: DELFINO, MASSIMO
name: KOTSAKIS, TASSOS
name: MARCOLINI, FEDERICA
name: RITA PALOMBO, MARIA
name: PAVIA, MARCO
name: PIRAS, PAOLO
name: ROOK, LORENZO
name: TORRE, DANILO
name: TUVERI, CATERINELLA
name: M.F. VALLI, ANDREA
name: WILKENS, BARBARA
Publisher: name: Università degli Studi di Milano
Year: 2004

description: The preliminary results of the analisys of fossil vertebrate remains from 19 fissure fillings in the karst network at Monte Tuttavista (Orosei, NMoro) are reported. about 80 taxa, among fishes, amphibians, reptiles, birds and mammals have been recognised.These remains document the evolution of vertebrate assemblages in the Sardinian insular domain, during a time interval apparently spanning the Late Pliocene to Late Pleistocene or Holocene. A succession of at least four populating complexes has been identified which document the vertebrate colonisation phases from the Italian mainland and the following periods of insularity. Indeed, the occurrence of endemic taxa such as the murid Rhagapodemus minor, the primate Macaca cf. M. majori and the caprine Nesogoral, suggest some fissure fillings date to a phase close to the Plio/Pleistocene boundary since these taxa occur at the Sardinian locality Capo Figari I which has been dated to about 1.8 Ma. However, the presence of the "hunting-hyaena" Chasmaporthetes, never reported before in Sardinia, could suggest that the beginning of the vertebrate record of Monte Tuttavista is older, given that this carnivore is documented in European Middle Pliocene-Early Pleistocene localities. The vertebrate assemblages that document the most recent migratory phases in the karst network of Monte Tuttavista are characterised by the occurrence of the endemic megalocerine cervid Praemegaceros cazioti and the arvicolid Tyrrhenicola henseli which are comparable with those occurring in other Late Pleistocene and early Holocene Sardinian sites.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 110, No 3
CHASMAPORTHETES MELEI N.SP., AN ENDEMIC HYAENID (CARNIVORA, MAMMALIA) FROM THE MONTE TUTTAVISTA FISSURE FILLINGS (LATE PLIOCENE TO EARLY PLEISTOCENE; SARDINIA, ITALY)
Creators: name: ROOK, LORENZO
name: P. FERRETTI, MARCO
name: ARCA, MARISA
name: TUVERI, CATERINELLA
Publisher: name: Università degli Studi di Milano
Year: 2004

description: Occurrence of large carnivores in island ecosystems is unusual, especially in the case of top predators. Here, a new endemic hyaenid species, Chasmaporthetes melei, from the late Late Pliocene to earliest Pleistocene fissure fillings of Monte Tuttavista, Orosei, Sardinia, is described. Although smaller, C. melei is morphologically comparable with the Plio-Pleistocene Eurasian hunting-hyena Chasmaporthetes lunensis, a possible ancestor of the Sardinian species. C. melei displays all the characteristic feeding adaptations of Chasmaporthetes, including a derived enamel structure similar to the condition in extant bone-crushing hyaenas. C. melei was an active predator that nonetheless included a relatively large amount of bone in its diet.

SHORT NOTES
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 110, No 3
VA\tilde V correlator within the instanton vacuum model
Creators: name: Dorokhov, A. E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The correlator of vector and nonsinglet axial-vector currents in the external electromagnetic field is calculated within the instanton liquid model of QCD vacuum. In general the correlator has two Lorentz structures: longitudinal w_L and transversal w_T with respect to axial-vector index. Within the instanton model the saturation of the anomalous w_L structure is demonstrated. It is known that in the chiral limit the transversal structure w_T is free from perturbative corrections. In this limit within the instanton model we calculate the transversal invariant function w_T at arbitrary momentum transfer, q, and show the absence of power corrections to this structure at large q^2. Instead there arise the exponential corrections to w_T at large q^2 reflecting nonlocal properties of QCD vacuum. The slope of w_T at zero virtuality, the QCD vacuum magnetic susceptibility of the quark condensate and its momentum dependence are estimated.
description: 16 pages, 7 figures (revised version, some typos are corrected)
Ο «Διαφωτισμός» σήμερα. Λογοτεχνικά ταξίδια στον 18ο αιώνα. Μια συγκριτική μελέτη
Creators: name: Ακριτίδου, Μαρία Θεόδωρου-Θεμιστοκλή
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Διαφωτισμός
Μεταμοντερνισμός
Μετανεωτερικότητα
Ιστορικό μυθιστόρημα
Μεταμυθοπλασία
Παρωδία
Englightment
Postmodernism
Postmodernity
Historical fiction
Metafiction
Parody

description: Η κεντρική ιδέα της εργασίας είναι η χαρτογράφηση μέρους ενός δυναμικού λογοτεχνικού πεδίου μέσα από τη διερεύνηση όψεων του Διαφωτισμού σε σύγχρονα λογοτεχνικά κείμενα, που καθιστούν τις ποικίλες εκφάνσεις του Διαφωτισμού κεντρικό πρόβλημα, είτε μέσω μιας παρωδικής σχέσης με τη λογοτεχνία του Διαφωτισμού είτε μέσω της εγγραφής της πλοκής στον ιστορικό 18ο αιώνα, είτε και με τους δύο τρόπους ταυτόχρονα. Η εργασία προσπαθεί να συζητήσει τους όρους και τις προϋποθέσεις της σύγχρονης λογοτεχνικής «στροφής προς τον 18ο αιώνα», λαμβάνοντας υπόψη την ευρύτερη συζήτηση για τις σχέσεις μετανεωτερικότητας και Διαφωτισμού.
description: The basic premise of this paper is the mapping of part of a dynamic literary field by way of exploring aspects of Enlightenment in contemporary literary texts. These texts discuss Enlightenment as a problem, either by establishing an intertextual bond with the literature of the philosophes, or by setting the plot during the historical 18th century, or both. The paper attempts to discuss the literary "turn to the 18th century", taking into account the broader debate about enlightenment and postmodernity.
Phase transitions of a tethered membrane model on a torus with intrinsic curvature
Creators: name: Endo, Isao
name: Koibuchi, Hiroshi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A tethered surface model is investigated by using the canonical Monte Carlo simulation technique on a torus with an intrinsic curvature. We find that the model undergoes a first-order phase transition between the smooth phase and the crumpled one.
description: 12 pages with 8 figures
Measures of pion and kaon structure from generalised parton distributions
Creators: name: Zhang, Jin-Li
name: Raya, Khépani
name: Chang, Lei
name: Cui, Zhu-Fang
name: Morgado, José Manuel
name: Roberts, Craig D.
name: Rodríguez-Quintero, José
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Pion and kaon structural properties provide insights into the emergence of mass within the Standard Model and attendant modulations by the Higgs boson. Novel expressions of these effects, in impact parameter space and in mass and pressure profiles, are exposed via $π$ and $K$ generalised parton distributions, built using the overlap representation from light-front wave functions constrained by one-dimensional valence distribution functions that describe available data. Notably, e.g. $K$ pressure profiles are spatially more compact than $π$ profiles and both achieve near-core pressures of similar magnitude to that found in neutron stars.
description: 9 pages, 6 figures, 2 tables. Accepted for publication in Phys. Lett. B
Θρησκευτική αγωγή και ανοχή της διαφορετικότητας. Οι αντιλήψεις των εκπαιδευτικών της δημοτικής ελληνοκυπριακής εκπαίδευσης
Creators: name: Ζήνωνος, Γεωργία Αντρέα
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Θρησκευτικά
θρησκευτική αγωγή
Διαφορετικότητα
Ανοχή
Ελληνοκυπριακή εκπαίδευση
Κύπρος
Religious education
Diversity
Tolerance
Greek-cypriot education
Cyprus

description: Ο πολυπολιτισμικός χαρακτήρας της κυπριακής κοινωνίας,η ένταξή της στην Ευρωπαϊκή Ενωση και οι προσπάθειες για ειρηνική διευθέτηση του κυπριακού προβλήματος καθιστούν το σεβασμό και την προστασία των ανθρωπίνων δικαιωμάτων και ελευθεριών πρωταρχική αξία. Συνεπώς η αξία της διαφορετικότητας θα πρέπει να αποτελέσει τον ιδεολογικό πυρήνα της εκπαίδευσης, ξεκινώντας από το σεβασμό της θρησκευτικής ελευθερίας του ατόμου. Διερευνάται το ερώτημα καταπόσο μπορεί η θρησκευτική αγωγή με το περιεχόμενο, τη θέση και το χαρακτήρα που έχει σήμερα να συνεισφέρει στις σύγχρονες επιδιώξεις της ελληνοκυπριακής πολιτείας και εκπαίδευσης και να συμβάλει στη διαμόρφωση θετικών στάσεων απέναντι στην πολιτισμική ποικιλία και διαφορά.
description: The multicultural character of cypriot society, the accesion in the European Union and the efforts for peaceful adjustement of the Cyprus political problem set the respect and the protection of human rights and freedom as an initiative value. Consequently, should be regarded as a central ideological issue of education, beginning from the respect of the religious diversity. It is questioned whether the religious education (in the greek-cypriot educational system) contributes to possitive attitudes regarding multicultural diversity.
Diatomic molecules in ultracold Fermi gases - Novel composite bosons
Creators: name: Petrov, D. S.
name: Salomon, C.
name: Shlyapnikov, G. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We give a brief overview of recent studies of weakly bound homonuclear molecules in ultracold two-component Fermi gases. It is emphasized that they represent novel composite bosons, which exhibit features of Fermi statistics at short intermolecular distances. In particular, Pauli exclusion principle for identical fermionic atoms provides a strong suppression of collisional relaxation of such molecules into deep bound states. We then analyze heteronuclear molecules which are expected to be formed in mixtures of different fermionic atoms. It is found how an increase in the mass ratio for the constituent atoms changes the physics of collisional stability of such molecules compared to the case of homonuclear ones. We discuss Bose-Einstein condensation of these composite bosons and draw prospects for future studies.
description: 10 pages, 5 figures
PERSICOSTROBUS VAEZ-JAVADI N. GEN.. A NEW EQUISETALEANSTROBILUS FROM THE TRIASSIC OF IRAN
Creators: name: VAEZ-JAVADI, FATEMEH
Publisher: name: Università degli Studi di Milano
Year: 2004

description: Well-preserved and abundant plant megafossils were found at in the basal part of the Shemshak Formation in on Ozon Mountain, Alborz, NE Iran .Persicostrobus is a new equisetalean strobilus which is introduced from the Rhaetian (Upper Triassic) strata. Persicostrobus ghavideli is introduced described as the type species of this genus. Persicostrobus sp. is an immature cone of this genus.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 110, No 3
Ekklesiologie und Ethik in der laufenden ökumenischen Diskussion
Creators: name: Mudge, Lewis S.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 45 Nr. 3 (1996): Ökumenische Rundschau, Band 45, Heft 3
Modeling one-dimensional island growth with mass-dependent detachment rates
Creators: name: Stinchcombe, R. B.
name: Reis, F. D. A. Aarão
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study one-dimensional models of particle diffusion and attachment/detachment from islands where the detachment rates gamma(m) of particles at the cluster edges increase with cluster mass m. They are expected to mimic the effects of lattice mismatch with the substrate and/or long-range repulsive interactions that work against the formation of long islands. Short-range attraction is represented by an overall factor epsilon<<1 in the detachment rates relatively to isolated particle hopping rates [epsilon ~ exp(-E/T), with binding energy E and temperature T]. We consider various gamma(m), from rapidly increasing forms such as gamma(m) ~ m to slowly increasing ones, such as gamma(m) ~ [m/(m+1)]^b. A mapping onto a column problem shows that these systems are zero-range processes, whose steady states properties are exactly calculated under the assumption of independent column heights in the Master equation. Simulation provides island size distributions which confirm analytic reductions and are useful whenever the analytical tools cannot provide results in closed form. The shape of island size distributions can be changed from monomodal to monotonically decreasing by tuning the temperature or changing the particle density rho. Small values of the scaling variable X=epsilon^{-1}rho/(1-rho) favour the monotonically decreasing ones. However, for large X, rapidly increasing gamma(m) lead to distributions with peaks very close to and rapidly decreasing tails, while slowly increasing gamma(m) provide peaks close to /2$ and fat right tails.
description: 16 pages, 6 figures
Διερεύνηση της καταλληλότητας θέσεων για την απόθεση αποβλήτων με βάση γεωλογικά και γεωτεχνικά κριτήρια
Creators: name: Αρμούτογλου, Σοφία Εμμανουήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Ροή
Ασυνέχειες
Γεωλογικά κριτήρια
Πεπερασμένες διαφορές
Διασπορά
Ρυπαντής
Flow
Fractures
Geological criteria
Finite differences
Dispersion
Pollutant

description: Θέμα της παρούσας διπλωματικής εργασίας είναι η διερεύνηση της καταλληλότητας θέσεων για την απόθεση αποβλήτων με βάση γεωλογικά και γεωτεχνικά κριτήρια. Γίνεται ανασκόπηση των νόμων που διέπουν τη ροή σε συνεχή και ασυνεχή μέσα, ενώ ιδιαίτερη έμφαση δίνεται στη ροή δια μέσου ασυνεχειών. Αναλύονται οι διαδικασίες μόλυνσης, όπως η συναγωγή, η διασπορά, η διάχυση, η επιβράδυνση, η βιοαποδόμηση, κ.α. αναλύονται οι μέθοδοι προσομοίωσης και οι γενικές αρχές που διέπουν τα αριθμητικά μοντέλα και συγκεκριμένα της μεθόδου των πεπερασμένων διαφορών, των πεπερασμένων στοιχείων, των οριακών στοιχείων και των κινούμενων σημείων.Σε δεύτερη φάση γίνεται εφαρμογή τριών λογισμικών, των UDEC και SEEP για την υδραυλική ανάλυση του μοντέλου και του CTRAN/W για τη μεταφορά του ρυπαντή. Το μοντέλο αποτελείται από την ακόλουθη διαστρωμάτωση από άνω προς τα κάτω: χάλικες, άμμος, άργιλος, ασβεστόλιθος. Υπάρχει επίσης ένα ρήγμα και γίνεται εισπίεση νερού σε έγκοιλο που βρίσκεται στο στρώμα του ασβεστόλιθου. Επιχειρείται η μετατροπή του μοντέλου που χρησιμοποιείται στην ανάλυση στο UDEC σε αντίστοιχο υδραυλικό μοντέλο για την ανάλυση με το λογισμικό του SEEP. Τέλος γίνεται η εισαγωγή των ροών διήθησης που υπολογίζονται από το SEEP το οποίο υπολογίζει τη ροή στις διαποτισμένες και ακόρεστες ζώνες στο CTRAN/W.
description: The subject of this work is the investigation of appropriateness of places for theThe subject of this work is the investigation of appropriateness of places for the deposition of waste with geological and geotechnical criteria. Examination is done on the laws of flow in continuous and discontinuous means, while particular emphasis is given in the flow via means with discontinuities. Processes of pollution are been analyzed, as the result of, dispersion, diffusion, adsorption, biodegrading, etc. The methods of simulation are been analyzed and also the general rules that condition the numerical models. The method of finite differences, finite elements, marginal elements and moved points .In second phase an application of three softwares, UDEC and SEEP for the hydraulic analysis of model and CTRAN/W for the movement of contaminants through porous media such as soil and rock is done. The model is constituted by the following stratigraphy from upper to under: gravels, sand, clay, limestone. Exists also a fault and it water is forced into the hole that is placed in the layer of limestone. Furthermore Is attempted the transformation of model that is used in the analysis at UDEC in corresponding hydraulic model for the analysis with the software of SEEP. Finally the flows are been imported at CTRAN/W, which is designed to use the seepage flow velocities computed due to flow in both saturated and unsaturated zones.
The interplay between symmetry-breaking and symmetry-preserving bifurcations in soft dielectric films and the emergence of giant electro-actuation
Creators: name: Chen, Lingling
name: Yang, Yu
name: Wang, Binglei
name: Yang, Shengyou
name: Dayal, Kaushik
name: Sharma, Pradeep
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Soft elastomers that can exhibit extremely large deformations under the action of an electric field are essential for applications such as soft robotics, stretchable and flexible electronics, energy harvesting among others. The critical limiting factor in conventional electro-actuation of such materials is the occurrence of the so-called pull-in instability. In this work, we demonstrate an extraordinarily simple way to coax a dielectric thin film towards a symmetry-breaking pitchfork bifurcation state while avoiding pull-in instability. Through the nonlinear interplay between the two bifurcation modes, we predict electro-actuation strains that exceed what is conventionally possible by 200$\%$, and at significantly lower applied electric fields.