cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Some compactness properties related to pseudocompactness and ultrafilter convergence
Creators: name: Lipparini, Paolo
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 54A20, 54D20, 54B10

description: We discuss some notions of compactness and convergence relative to a specified family F of subsets of some topological space X. The two most interesting particular cases of our construction appear to be the following ones. (1) The case in which F is the family of all singletons of X, in which case we get back the more usual notions. (2) The case in which F is the family of all nonempty open subsets of X, in which case we get notions related to pseudocompactness. A large part of the results in this note are known in particular case (1); the results are, in general, new in case (2). As an example, we characterize those spaces which are D-pseudocompact, for some ultrafilter D uniform over $λ$.
description: v2, largely expanded and entirely rewritten; 19 pages v3 corrected an inaccuracy (see Example 3.4) and expanded Section 6; 25 pages
Optimal Decoherence Control in non-Markovian Open, Dissipative Quantum Systems
Creators: name: Cui, Wei
name: Xi, Zairong
name: Pan, Yu
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the optimal control problem for non-Markovian open, dissipative quantum system. Optimal control using Pontryagin maximum principle is specifically derived. The influences of Ohmic reservoir with Lorentz-Drude regularization are numerically studied in a two-level system under the following three conditions: ω_0\llω_c, ω_0\approxω_c or ω_0\ggω_c, where ω_0 is the characteristic frequency of the quantum system of interest, and ω_c the cut-off frequency of Ohmic reservoir. The optimal control process shows its remarkable influences on the decoherence dynamics. The temperature is a key factor in the decoherence dynamics. We analyze the optimal decoherence control in high temperature, intermediate temperature, and low temperature reservoirs respectively. It implies that designing some engineered reservoirs with the controlled coupling and state of the environment can slow down the decoherence rate and delay the decoherence time. Moreover, we compare the non-Markovian optimal decoherence control with the Markovian one and find that with non-Markovian the engineered artificial reservoirs are better than with the Markovian approximation in controlling the open, dissipative quantum system's decoherence.
description: 12pages,7figures
title: Join the SEI and White House OSTP to Explore the Future of Software and AI Engineering
Creators: name: Carleton, Anita
name: Robert, John
name: Klein, Mark
name: Schmidt, Douglas C.
name: Harper, Erin
Publisher: name: Software Engineering Institute, Carnegie Mellon University
Year: 2023

description: The SEI and the White House OSTP will co-host a workshop to inform a community strategy for building and maintaining U.S. leadership in software engineering and artificial intelligence (AI) engineering.
Synoptic Sky Surveys and the Diffuse Supernova Neutrino Background: Removing Astrophysical Uncertainties and Revealing Invisible Supernovae
Creators: name: Lien, Amy
name: Fields, Brian D.
name: Beacom, John F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The cumulative (anti)neutrino production from all core-collapse supernovae within our cosmic horizon gives rise to the diffuse supernova neutrino background (DSNB), which is on the verge of detectability. The observed flux depends on supernova physics, but also on the cosmic history of supernova explosions; currently, the cosmic supernova rate introduces a substantial (+/-40%) uncertainty, largely through its absolute normalization. However, a new class of wide-field, repeated-scan (synoptic) optical sky surveys is coming online, and will map the sky in the time domain with unprecedented depth, completeness, and dynamic range. We show that these surveys will obtain the cosmic supernova rate by direct counting, in an unbiased way and with high statistics, and thus will allow for precise predictions of the DSNB. Upcoming sky surveys will substantially reduce the uncertainties in the DSNB source history to an anticipated +/-5% that is dominated by systematics, so that the observed high-energy flux thus will test supernova neutrino physics. The portion of the universe (z < 1) accessible to upcoming sky surveys includes the progenitors of a large fraction (~ 87%) of the expected 10-26 MeV DSNB event rate. We show that precision determination of the (optically detected) cosmic supernova history will also make the DSNB into a strong probe of an extra flux of neutrinos from optically invisible supernovae, which may be unseen either due to unexpected large dust obscuration in host galaxies, or because some core-collapse events proceed directly to black hole formation and fail to give an optical outburst.
description: 11 pages, 6 figures
A new model for evolution in a spatial continuum
Creators: name: Barton, N. H.
name: Etheridge, A. M.
name: Veber, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J25, 92D10, 92D15

description: We investigate a new model for populations evolving in a spatial continuum. This model can be thought of as a spatial version of the Lambda-Fleming-Viot process. It explicitly incorporates both small scale reproduction events and large scale extinction-recolonisation events. The lineages ancestral to a sample from a population evolving according to this model can be described in terms of a spatial version of the Lambda-coalescent. Using a technique of Evans(1997), we prove existence and uniqueness in law for the model. We then investigate the asymptotic behaviour of the genealogy of a finite number of individuals sampled uniformly at random (or more generally `far enough apart') from a two-dimensional torus of side L as L tends to infinity. Under appropriate conditions (and on a suitable timescale), we can obtain as limiting genealogical processes a Kingman coalescent, a more general Lambda-coalescent or a system of coalescing Brownian motions (with a non-local coalescence mechanism).
description: 63 pages, version accepted to Electron. J. Probab
title: Utilidad de la secuencia FLAIR en el estudio de la patología del oído interno
Creators: name: García Gómez Muriel, María Isabel
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Neuroradiology brain
subject: MR

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Revisar la utilidad de la secuencia FLAIR en el estudio de la patología del oído interno. Describir los hallazgos en resonancia y su correlación con la...
Strong dark matter constraints on GMSB models
Creators: name: Staub, F.
name: Porod, W.
name: Niemeyer, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We reconsider the dark matter problem in supersymmetric models with gauge mediated supersymmetry breaking, with and without R-parity breaking. In these classes of models, a light gravitino forms the dark matter.Consistency with the experimental data, in particular the dark matter abundance and the small-scale power spectrum, requires additional entropy production after the decoupling of the gravitino from the thermal bath. We demonstrate that the usual mechanism via messenger number violating interactions does not work in models where the messenger belongs to SU (5) representations. This is mainly a consequence of two facts: (i) there are at least two different types of lightest messenger particles and (ii) the lightest messenger particle with SU (2) quantum numbers decays dominantly into vector bosons once messenger number is broken, a feature which has been overlooked so far. In case of SO(10) messenger multiplets we find scenarios which work if the SM gauge singlet component is rather light.
description: 9 pages, 5 figures
title: Cambios tras el tratamiento con radioterapia en los tumores de cabeza y cuello. Algo más que la recurrencia.
Creators: name: Revert Ventura, Antonio José
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Inflammation
subject: Biological effects
subject: Tissue characterisation
subject: Radiation effects
subject: Complications
subject: Ultrasound
subject: CT
subject: MR
subject: Head and neck

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Objetivos docentes Los objetivos de este trabajo son: Presentar los cambios “fisiológicos” esperables que se producen por el efecto de la radioterapia en los tejidos tratados,
tanto con tomografía computarizada (TC) como con resonancia...
Topological Index Theory for Surfaces in 3-Manifolds
Creators: name: Bachman, David
Publisher: name: arXiv
Year: 2009
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M99

description: The disk complex of a surface in a 3-manifold is used to define its {\it topological index}. Surfaces with well-defined topological index are shown to generalize well-known classes, such as incompressible, strongly irreducible, and critical surfaces. The main result is that one may always isotope a surface $H$ with topological index $n$ to meet an incompressible surface $F$ so that the sum of the indices of the components of $H \setminus N(F)$ is at most $n$. This theorem and its corollaries generalize many known results about surfaces in 3-manifolds, and often provides more efficient proofs. The paper concludes with a list of questions and conjectures, including a natural generalization of Hempel's {\it distance} to surfaces with topological index $\ge 2$.
description: 25 pages, 8 figures. Final version. To appear in Geometry & Topology
Anisotropic In-Plane Strain and Transport in Epitaxial Nd(0.2)Sr(0.8)MnO(3) Thin Films
Creators: name: Neupane, K. P.
name: Neumeier, J. J.
name: Cohn, J. L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The structure, morphology, and electrical properties of epitaxial a-axis oriented thin films of Nd(0.2)Sr(0.8)MnO(3) are reported for thicknesses 10 nm <= t <= 150 nm. Films were grown with both tensile and compressive strain on various substrates. It is found that the elongated crystallographic c-axes of the films remain fully strained to the substrates for all thicknesses in both strain states. Relaxation of the a and b axes is observed for t>= 65 nm with films grown under tensile strain developing uniaxial crack arrays (running along the c axis) due to a highly anisotropic thermal expansion. For the latter films, the room-temperature in-plane electrical resistivity anisotropy, rho_b/rho_c, increases approximately exponentially with increasing film thickness to values of ~1000 in the thickest films studied. Films under tension have their Neel temperatures enhanced by ~25 K independent of thickness, consistent with an enhancement of ferromagnetic exchange along their expanded c axes.
description: 14 pp., 9 Fig.s
Computation of the coefficients for $p^6$ order anomalous chiral Lagrangian
Creators: name: Jiang, Shao-Zhou
name: Wang, Qing
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the results of computing the $p^6$ order low energy constants in the anomalous part of chiral Lagrangian both for two and three flavor pseudoscalar mesons. This is a generalization of our previous work on calculating the $p^6$ order coefficients for the normal part chiral Lagrangian in terms of the quark self energy $Σ(p^2)$. We show that most of our results are consistent with those we can find in the literature.
description: 20 pages
Spin-Orbit gauge and quantum spin Hall effect
Creators: name: Basu, B.
name: Bandyopadhyay, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have shown that the non-Abelian spin-orbit gauge field strength of the Rashba and Dresselhaus interactions, when split into two Abelian field strengths, the Hamiltonian of the system can be re-expressed as a Landau level problem with a particular relation between the two coupling parameters. The quantum levels are created with up and down spins with opposite chirality and leads to the quantum spin Hall effect.
description: To appear in Physics Letters A
A Randomized Sublinear Time Parallel GCD Algorithm for the EREW PRAM
Creators: name: Sorenson, Jonathan P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences
subject: F.2.1; I.1.2

description: We present a randomized parallel algorithm that computes the greatest common divisor of two integers of n bits in length with probability 1-o(1) that takes O(n loglog n / log n) expected time using n^{6+ε} processors on the EREW PRAM parallel model of computation. We believe this to be the first randomized sublinear time algorithm on the EREW PRAM for this problem.
Erasmo come Ercole nell'adagio Herculei labores
Erasmus as Hercules in the Adagium Herculei labores
Creators: name: Pergreffi, Lucia <1979>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: L-FIL-LET/04 Lingua e letteratura latina

description: Il lavoro consiste nella traduzione dell’adagio 2001, Herculei labores con commento delle righe 1-116, che comprendono il racconto della fatica di Ercole contro l’idra di Lerna e le interpretazioni che Erasmo ne fornisce per introdurre la filologia come impresa erculea in chiave autobiografica. 
L’introduzione ha lo scopo di presentare una sintesi degli elementi notevoli del commento e alcune osservazioni sull’autorappresentazione di sé dell’umanista. Erasmo fa dell’identificazione con Ercole un topos della propria descrizione in chiave ironica, ma si propone anche come emulo di Girolamo, di cui cura l’edizione delle lettere. Questo lavoro prende in considerazione infine il ritratto di Erasmo dipinto da Holbein e custodito a Longford Castle in relazione al testo dell’adagio, al quale allude con la scritta in primo piano, ΗΡΑΚΛΕΙΟΙ ΠΟΝΟΙ.
description: The work is the Italian translation of Erasmus’ Adagium 2001, Herculei labores, with comment of lines 1-116, which include the story of the labor of Hercules against the Hydra of Lerna and interpretations that Erasmus provides in order to introduce philology as a Herculean task in autobiographical perspective.
The introduction aims to present the most relevant elements of the comment and some observations about the humanist’s self representation. Erasmus makes his identification with Hercules a topos in his ironical self description, but at the same time he describes himself as a new Jerome, whose letters he is editing. Eventually it also considers the portrait of Erasmus painted by Holbein the Younger and kept at Longford Castle in the light of the text of the adagium, which is referred to with the word in the foreground, ΗΡΑΚΛΕΙΟΙ ΠΟΝΟΙ.
Econometrics of default risk
Creators: name: Agosto, Arianna <1985>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: SECS-P/05 Econometria

description: This thesis is the result of a project aimed at the study of a crucial topic in finance: default risk, whose measurement and modelling have achieved increasing relevance in recent years. We investigate the main issues related to the default phenomenon, under both a methodological and empirical perspective. The topics of default predictability and correlation are treated with a constant attention to the modelling solutions and reviewing critically the literature. From the methodological point of view, our analysis results in the proposal of a new class of models, called Poisson
Autoregression with Exogenous Covariates (PARX). The PARX models, including both autoregressive end exogenous components, are able to capture the dynamics of default count time series, characterized by persistence of shocks and slowly decaying autocorrelation.
Application of different PARX models to the monthly default counts of US industrial firms in the period 1982-2011 allows an empirical insight of the defaults dynamics and supports the identification of the main default predictors at an aggregate level.
HAT-P-11b: A Super-Neptune Planet Transiting a Bright K Star in the Kepler Field
Creators: name: Bakos, G. Á.
name: Torres, G.
name: Pál, A.
name: Hartman, J.
name: Kovács, Géza
name: Noyes, R. W.
name: Latham, D. W.
name: Sasselov, D. D.
name: Sipőcz, B.
name: Esquerdo, G. A.
name: Fischer, D. A.
name: Johnson, J. A.
name: Marcy, G. W.
name: Butler, R. P.
name: Isaacson, H.
name: Howard, A.
name: Vogt, S.
name: Kovács, Gábor
name: Fernandez, J.
name: Moór, A.
name: Stefanik, R. P.
name: Lázár, J.
name: Papp, I.
name: Sári, P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report on the discovery of HAT-P-11b, the smallest radius transiting extrasolar planet (TEP) discovered from the ground, and the first hot Neptune discovered to date by transit searches. HAT-P-11b orbits the bright (V=9.587) and metal rich ([Fe=H] = +0.31 +/- 0.05) K4 dwarf star GSC 03561-02092 with P = 4.8878162 +/- 0.0000071 days and produces a transit signal with depth of 4.2 mmag. We present a global analysis of the available photometric and radial-velocity data that result in stellar and planetary parameters, with simultaneous treatment of systematic variations. The planet, like its near-twin GJ 436b, is somewhat larger than Neptune (17Mearth, 3.8Rearth) both in mass Mp = 0.081 +/- 0.009 MJ (25.8 +/- 2.9 Mearth) and radius Rp = 0.422 +/- 0.014 RJ (4.73 +/- 0.16 Rearth). HAT-P-11b orbits in an eccentric orbit with e = 0.198 +/- 0.046 and omega = 355.2 +/- 17.3, causing a reflex motion of its parent star with amplitude 11.6 +/- 1.2 m/s, a challenging detection due to the high level of chromospheric activity of the parent star. Our ephemeris for the transit events is Tc = 2454605.89132 +/- 0.00032 (BJD), with duration 0.0957 +/- 0.0012 d, and secondary eclipse epoch of 2454608.96 +/- 0.15 d (BJD). The basic stellar parameters of the host star are M* = 0.809+0.020-0.027 Msun, R* = 0.752 +/- 0.021 Rsun and Teff = 4780 +/- 50 K. Importantly, HAT-P-11 will lie on one of the detectors of the forthcoming Kepler mission. We discuss an interesting constraint on the eccentricity of the system by the transit light curve and stellar parameters. We also present a blend analysis, that for the first time treats the case of a blended transiting hot Jupiter mimicing a transiting hot Neptune, and proves that HAT-P-11b is not such a blend.
description: Accepted for publication in ApJ, 24 pages, 14 figures, 6 tables. All RV data presented in this version
The entanglement dynamics of the bipartite quantum system: toward entanglement sudden death
Creators: name: Cui, Wei
name: Xi, Zairong
name: Pan, Yu
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the entanglement dynamics of bipartite quantum system between two qubits with the dissipative environment. We begin with the standard Markovian master equation in the Lindblad form and the initial state which is prepared in the extended Werner-like state: $ρ^Φ_{AB}(0)$. We examine the conditions for entanglement sudden death (ESD) and calculate the corresponding ESD time by the Wootters' concurrence. We observe that ESD is determined by the parameters like the mean occupation number of the environment $N$, amount of initial entanglement $α$, and the purity $r$. For N=0, we get the analytical expression of both ESD condition and ESD time. For $N>0$ we give a theoretical analysis that ESD always occurs, and simulate the concurrence as a function of $γ_0t$ and one of the parameters $N, α$, and $r$.
description: 10 pages, 5 figures
Rotation of elliptic optical beam in anisotropic media
Creators: name: Chen, Zhixiao
name: Guo, Qi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We investigate the linear propagation of a paraxial optical beam in anisotropic media. We start from the eigenmode solution of the plane wave in the media, then subsequently derive the wave equation for the beam propagating along a general direction except the optic axes. The wave equation has a term containing the second mixed partial derivative which originates from the anisotropy, and this term can result in the rotation of the beam spot. The rotation effect is investigated by solving analytically the wave equation with an initial elliptical Gaussian beam for both uniaxial and biaxial media. For both media, it is found that there exists a specific direction, which is dependent on anisotropy of the media, on the cross-section perpendicular to propagation direction to determine the rotation of the beam spot. When the major axis of the elliptical spot of the input beam is parallel to or perpendicular to the specific direction, the beam spot will not rotate during propagation, otherwise, it will rotate with the direction and the velocity determined by input parameters of the beam.
description: 24 pages, 9 figures
Learning about Galactic structure with Gaia astrometry
Creators: name: Brown, Anthony G. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Gaia mission is reviewed together with the expected contents of the final catalogue. It is then argued that the ultimate goal of Galactic structure studies with Gaia astrometry should be to build a dynamical model of our galaxy which is capable of explaining the contents of the Gaia catalogue. This will be possible only by comparing predicted catalogue data to Gaia's actual measurements. To complement this approach the Gaia catalogue should be used to recalibrate photometric distance and abundance indicators across the HR-diagram in order to overcome the lack of precise parallax data at the faint end of the astrometric survey. Using complementary photometric and spectroscopic data from other surveys will be essential in this respect.
description: Presented at the "Classification and Discovery in Large Astronomical Surveys" meeting, Ringberg Castle, 14-17 October, 2008
X-ray and Optical Study of Low Core Density Globular Clusters NGC6144 and E3
Creators: name: Lan, Shih Hao
name: Kong, Albert K. H.
name: Verbunt, Frank
name: Lewin, Walter H. G.
name: Bassa, Cees
name: Anderson, Scott F.
name: Pooley, David
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on the Chandra X-ray Observatory and Hubble Space Telescope observation of two low core density globular clusters, NGC6144 and E3. By comparing the number of X-ray sources inside the half-mass radius to those outside, we found 6 X-ray sources within the half-mass radius of NGC6144, among which 4 are expected to be background sources; 3 X-ray sources are also found within the half-mass radius of E3, of which 3 is expected to be background source. Therefore, we cannot exclude that all our sources are background sources. However, combining the results from X-ray and optical observations, we found that 1-2 sources in NGC6144 and 1 source in E3 are likely to be cataclysmic variables and that 1 source in NGC6144 is an active binary, based on the X-ray and optical properties. The number of faint X-ray sources in NGC6144 and E3 found with Chandra and HST is higher than a prediction based on collision frequency, but is closer to that based on mass. Our observations strongly suggest that the compact binary systems in NGC6144 and E3 are primordial in origin.
description: 28 pages, 9 figures, 6 tables, Accepted for publication in ApJ
title: Cistouretrografía por sondaje tras uretroplastia:¿Qué quiere saber el urólogo?
Creators: name: Rojo Carmona, Lydia Eugenia
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Cystography / Uretrography
subject: Urinary Tract / Bladder

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
La estenosis de uretra es una entidad clínica urológica que a menudo pasa inadvertida.
Su etiología es diversa y es frecuente antes de su diagnóstico la existencia de manipulaciones instrumentales en la uretra. El tratamiento quirúrgico se...
Parametri emato-biochimici e contaminanti ambientali in Tartarughe e Chirotteri
Blood chemistry and envirnomental contaminants in Tortoise and Bats
Creators: name: Cannavacciuolo, Annunziata <1982>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: BIO/12 Biochimica clinica e biologia molecolare e clinica

description: La biochimica clinica dei rettili e dei cheloni in particolare, non ha ottenuto al momento lo stesso livello di attenzione rivolto ai mammiferi. Con il presente lavoro viene proposta la valutazione dei più importanti parametri ematologici e biochimici in campioni di sangue di Testudo hermanni al fine di facilitare l'interpretazione dei dati di laboratorio e la diagnosi di eventuali patologie. A questo scopo, sono stati calcolati gli intervalli di riferimento di questi parametri in individui clinicamente sani e sono state analizzate le influenze di fattori ambientali e fisiologici. Sono state inoltre determinate le concentrazioni di alcuni importanti elementi chimici sia essenziali che non essenziali.

Su campioni di chirottero del genere Tadarida teniotis sono state determinate le concentrazioni di PCB DL, PCB NDL, PCDD/F, PFAS e di elementi chimici essenziali e non, al fine di valutare: il possibile livello di contaminazione in relazione alla specie e all’habitat, la prevalenza e/o il rapporto delle classi di composti nel caso di una possibile contaminazione, la eventuale fonte di contaminazione. A quanto ci risulta, il nostro lavoro rappresenta il primo tentativo di analizzare su vasta scala le concentrazioni di questi inquinanti in una popolazione di pipistrelli residenti in un’area urbana. Tra i vari contaminanti esaminanti in questo studio, il Pb e le diossine possono costituire un serio problema per Tadarida teniotis.
description: Hermann’s tortoise, Testudo hermanni, is currently on the IUCN red list of endangered species. Reptile medicine uses laboratory analyses to evaluate health status, but data on hematology, blood biochemistry and protein electrophoresis are limited in tortoises.The purposes of this study were to establish the most important hematological and biochemical parameters for health assessment in Hermann’s tortoises, calculate the reference intervals and evaluate the impact of environmental and physiological factors.The reference intervals defined in the present study can be considered a useful tool for clinical pathologists and researchers working in tortoise medicine and conservation. In Europe bat populations are gradually declining due to environmental pollution; in this thesis we have studied the concentrations of many contaminants including essential and non essential trace elements, dioxins, PCB DL and NDL and PFAS in tissues of juveniles Tadarida teniotis. The high concentrations of Pb and dioxin determined are indicative of acute evnironmental exposure.
Dal repertorio al database: il progetto Monete al femminile.
L'iconografia monetale dell'Augusta nella prima età imperiale
From Repertoire to Database: The Monete al femminile project.
Imperial Women's Representation on Coins during the First Imperial Age
Creators: name: Filippini, Erica <1983>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: L-ANT/04 Numismatica

description: Il presente lavoro si pone l'obiettivo di fornire una rilettura filologica delle fonti numismatiche sui membri femminili della domus imperiale romana da Livia a Matidia Maggiore, supportata da una schedatura informatizzata del documento monetale. La compilazione è stata condotta tramite lo spoglio dei repertori di maggiore consultazione (RIC, BMCRE, BNCMER, HCC) e ha posto l'attenzione sia sugli elementi iconografici che su quelli epigrafici che vanno a comporre l'aspetto estrinseco della moneta. La scelta di tali elementi nelle emissioni imperiali è l'espressione di un vero e proprio linguaggio dotato di una logica comunicativa ben precisa e finalizzata a garantire la comprensibilità del messaggio. La sua decodifica consente di individuare possibili linee di definizione del ruolo pubblico e politico delle Auguste nel quadro dell'ideologia imperiale. A veicolare questo significato contribuiscono ugualmente gli elementi iconografici, con valore connotativo rispetto al soggetto raffigurato, e quelli epigrafici, con valore esplicativo ai fini della comprensione del dato visivo. La moneta rappresenta dunque un documento complesso, che necessita di una specifica metodologia di indagine volta a interpretarne tutti gli elementi.
description: This work aims to give a comprehensive survey of numismatic sources on Roman Imperial Women from Livia to Matidia the Elder, supported by a computerized census of the numismatic evidence.
VSX J003909.7+611233: a new Slowly Pulsating B star (SPB) in Cassiopeia?
Creators: name: Boyd, David
name: Lloyd, Christopher
name: dePonthiere, Pierre
name: Julian, Mack
name: Koff, Robert
name: Krajci, Tom
name: Shears, Jeremy
name: Staels, Bart
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of a new 13th magnitude variable in Cassiopeia close to the variable KP Cas. Analysis of 6 days of intensive photometry shows a regular, near sinusoidal modulation with an amplitude of 0.024 magnitudes and a period of 0.43815(31) d. Although its colour indicates a spectral type around F0 the star probably suffers up to 2 - 2.5 magnitudes of extinction so could be an A- or B-type star. Given the period, the low amplitude, the shape of the light curve and the probable spectral type we consider it most likely to be a slowly pulsating B-type (SPB) star. The variable has been registered in the International Variable Star Index with the identifier VSX J003909.7+611233.
description: Accepted for publication in Journal of the British Astronomical Association, 6 pages, 6 figures, significant revision of extinction correction.
Some curious congruences modulo primes
Creators: name: Zhao, Li-Lu
name: Sun, Zhi-Wei
Publisher: name: arXiv
Year: 2009
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11A07; 11A41; 11T08

description: Let n be a positive odd integer and let p>n+1 be a prime. We mainly derive the following congruence: $$\sum_{0
description: 6 pages
Pharmacological Rescue of Dendritic Pathology in the Ts65Dn Mouse Model of Down Syndrome
Creators: name: Stagni, Fiorenza <1985>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: BIO/09 Fisiologia

description: Down syndrome (DS) is a genetic pathology characterized by brain hypotrophy and severe cognitive disability. Although defective neurogenesis is an important determinant of cognitive impairment, a severe dendritic pathology appears to be an equally important factor. It is well established that serotonin plays a pivotal role both on neurogenesis and dendritic maturation. Since the serotonergic system is profoundly altered in the DS brain, we wondered whether defects in the hippocampal development can be rescued by treatment with fluoxetine, a selective serotonin reuptake inhibitor and a widely used antidepressant drug. A previous study of our group showed that fluoxetine fully restores neurogenesis in the Ts65Dn mouse model of DS and that this effect is accompanied by a recovery of memory functions. The goal of the current study was to establish whether fluoxetine also restores dendritic development and maturation. In mice aged 45 days, treated with fluoxetine in the postnatal period P3-P15, we examined the dendritic arbor of newborn and mature granule cells of the dentate gyrus (DG). The granule cells of trisomic mice had a severely hypotrophic dendritic arbor, fewer spines and a reduced innervation than euploid mice. Treatment with fluoxetine fully restored all these defects. Moreover the impairment of excitatory and inhibitory inputs to CA3 pyramidal neurons was fully normalized in treated trisomic mice, indicating that fluoxetine can rescue functional connectivity between the DG and CA3. The widespread beneficial effects of fluoxetine on the hippocampal formation suggest that early treatment with fluoxetine can be a suitable therapy, possibly usable in humans, to restore the physiology of the hippocampal networks and, hence, memory functions. These findings may open the way for future clinical trials in children and adolescents with DS.
Diagrammatic Monte Carlo for Correlated Fermions
Creators: name: Kozik, E.
name: Van Houcke, K.
name: Gull, E.
name: Pollet, L.
name: Prokof'ev, N.
name: Svistunov, B.
name: Troyer, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that Monte Carlo sampling of the Feynman diagrammatic series (DiagMC) can be used for tackling hard fermionic quantum many-body problems in the thermodynamic limit by presenting accurate results for the repulsive Hubbard model in the correlated Fermi liquid regime. Sampling Feynman's diagrammatic series for the single-particle self-energy we can study moderate values of the on-site repulsion ($U/t \sim 4$) and temperatures down to $T/t=1/40$. We compare our results with high temperature series expansion and with single-site and cluster dynamical mean-field theory.
description: 4 pages, 5 figures, stylistic changes
Analytic Results for Massless Three-Loop Form Factors
Creators: name: Lee, R. N.
name: Smirnov, A. V.
name: Smirnov, V. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We evaluate, exactly in d, the master integrals contributing to massless three-loop QCD form factors. The calculation is based on a combination of a method recently suggested by one of the authors (R.L.) with other techniques: sector decomposition implemented in FIESTA, the method of Mellin--Barnes representation, and the PSLQ algorithm. Using our results for the master integrals we obtain analytical expressions for two missing constants in the ep-expansion of the two most complicated master integrals and present the form factors in a completely analytic form.
description: minor revisions, to appear in JHEP
Efficient estimation of copula-based semiparametric Markov models
Creators: name: Chen, Xiaohong
name: Wu, Wei Biao
name: Yi, Yanping
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62M05 (Primary) 62F07 (Secondary)

description: This paper considers the efficient estimation of copula-based semiparametric strictly stationary Markov models. These models are characterized by nonparametric invariant (one-dimensional marginal) distributions and parametric bivariate copula functions where the copulas capture temporal dependence and tail dependence of the processes. The Markov processes generated via tail dependent copulas may look highly persistent and are useful for financial and economic applications. We first show that Markov processes generated via Clayton, Gumbel and Student's $t$ copulas and their survival copulas are all geometrically ergodic. We then propose a sieve maximum likelihood estimation (MLE) for the copula parameter, the invariant distribution and the conditional quantiles. We show that the sieve MLEs of any smooth functional is root-$n$ consistent, asymptotically normal and efficient and that their sieve likelihood ratio statistics are asymptotically chi-square distributed. Monte Carlo studies indicate that, even for Markov models generated via tail dependent copulas and fat-tailed marginals, our sieve MLEs perform very well.
description: Published in at http://dx.doi.org/10.1214/09-AOS719 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
$w_d=-1$ in interacting quintessence model
Creators: name: Sadjadi, H. Mohseni
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A model consisting of quintessence scalar field interacting with cold dark matter is considered. Conditions required to reach $w_d=-1$ are discussed. It is shown that depending on the potential considered for the quintessence, reaching the phantom divide line puts some constraints on the interaction between dark energy and dark matter. This also may determine the ratio of dark matter to dark energy density at $w_d=-1$.
description: 10 pages, references updated, some notes added, minor changes applied, accepted for publication in Eur. Phys. J. C
Quantum noise of a Bose-Einstein condensate in an optical cavity, correlations and entanglement
Creators: name: Szirmai, G.
name: Nagy, D.
name: Domokos, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: A Bose-Einstein condensate of ultracold atoms inside the field of a laser-driven optical cavity exhibits dispersive optical bistability. We describe this system by using mean-field approximation and by analyzing the correlation functions of the linearized quantum fluctuations around the mean-field solution. The entanglement and the statistics of the atom-field quadratures are given in the stationary state. It is shown that the mean-field solution, i.e. the Bose-Einstein condensate is robust against entanglement generation for most part of the phase diagram.
description: 15 pages, 8 figures, extended discussion on experimental connections
Fluid moment hierarchy equations derived from quantum kinetic theory
Creators: name: Haas, F.
name: Marklund, M.
name: Brodin, G.
name: Zamanian, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A set of quantum hydrodynamic equations are derived from the moments of the electrostatic mean-field Wigner kinetic equation. No assumptions are made on the particular local equilibrium or on the statistical ensemble wave functions. Quantum diffraction effects appear explicitly only in the transport equation for the heat flux triad, which is the third-order moment of the Wigner pseudo-distribution. The general linear dispersion relation is derived, from which a quantum modified Bohm-Gross relation is recovered in the long wave-length limit. Nonlinear, traveling wave solutions are numerically found in the one-dimensional case. The results shed light on the relation between quantum kinetic theory, the Bohm-de Broglie-Madelung eikonal approach, and quantum fluid transport around given equilibrium distribution functions.
description: 5 pages, three figures, uses elsarticle.cls
An expanding 4D universe in a 5D Kaluza-Klein cosmology with higher dimensional matter
Creators: name: Darabi, F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the framework of Kaluza-Klein theory, we investigate a $(4+1)$-dimensional universe consisting of a $(4+1)$ dimensional Robertson-Walker type metric coupled with a $(4+1)$ dimensional energy-momentum tensor. The matter part consists of an energy density together with a pressure subject to 4D part of the $(4+1)$ dimensional energy-momentum tensor. The dark part consists of just a dark pressure $\bar{p}$, corresponding to the extra-dimension endowed by a scalar field, with no element of dark energy. It is shown that the reduced Einstein field equations are free of 4D pressure and are just affected by an effective pressure produced by the 4D energy density and dark pressure. It is then proposed that the expansion of the universe may be controlled by the equation of state in higher dimension rather than four dimensions. This may account for the emergence of unexpected current acceleration in the middle of matter dominant era.
description: 10 pages, minor revision
Effect of temperature on aging and time-temperature superposition in nonergodic Laponite suspensions
Creators: name: Awasthi, Varun
name: Joshi, Yogesh M
Publisher: name: arXiv
Year: 2009
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied the effect of temperature on aging dynamics of laponite suspensions by carrying out the rheological oscillatory and creep experiments. We observed that at higher temperatures the mechanism responsible for aging became faster thereby shifting the evolution of elastic modulus to lower ages. Significantly, in the creep experiments, all the aging time and the temperature dependent strain data superposed to form a master curve. Possibility of such superposition suggests that the rheological behavior depends on the temperature and the aging time only through the relaxation processes and both the variables do not affect the distribution but only the average value of relaxation times. In addition, this procedure allows us to predict long time rheological behavior by carrying out short time tests at high temperatures and small ages.
description: 18 pages, 5 figures
Quantum interference of particles and resonances
Creators: name: Azimov, Ya.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Though the phenomenon of quantum-mechanical interference has been known for many years, it still has many open questions. The present review discusses specifically how the interference of resonances may and does work. We collect data on the search for rare decay modes of well-known resonances that demonstrate a wide variety of possible different manifestations of interference. Some special kinds of resonance interference, not yet sufficiently studied and understood, are also briefly considered. The interference may give useful experimental procedures to search for new resonances with arbitrary quantum numbers, even with exotic ones, and to investigate their properties.
description: v2 expanded according to referee's suggestion; 14 pages,14 figures; the text corresponds to the published version, with some corrections
title: Bayesian inference for stable differential equation models with applications in computational neuroscience
Creators: name: Maybank, Philip
Publisher: name: University of Reading
Year: 2019

description: Inference for mechanistic models is challenging because of nonlinear interactions between model parameters and a lack of identifiability. Here we focus on a specific class of mechanistic models, which we term stable differential equations. The dynamics in these models are approximately linear around a stable fixed point of the system. We exploit this property to develop fast approximate methods for posterior inference. We first illustrate our approach using simulated EEG data on the Liley et al model, a mechanistic neural population model. Then we apply our methods to experimental EEG data from rats to estimate how parameters in the Liley et al model vary with level of isoflurane anaesthesia. More generally, stable differential equation models and the corresponding inference methods are useful for analysis of stationary time-series data. Compared to the existing state-of-the art, our methods are several orders of magnitude faster, and are particularly suited to analysis of long time-series (>10,000 time-points) and models of moderate dimension (10-50 state variables and 10-50 parameters.)
East Indians in British Columbia 1904-1914 : an historical study in growth and integration
Creators: name: Lal, Brij
Publisher: name: University of British Columbia
Year: 2010

description: The full history of the early East Indian community in British Columbia has yet to be written. Here an attempt has been made to assemble the information relating to some aspects of the community's origins and development between 1904 and 1914, the first decade of their presence in Canada. This thesis also attempts to examine the structural position of the East Indian community and its lack of integration into and acceptance by the host society. Four major factors influencing the nature of development of the East Indian community were examined in detail: the socio-economic background of the East Indian immigrants, the nature of institutional developments in the nascent community in British Columbia, the attitudes and perceptions of the host society, and the political responses of the Dominion and Imperial governments to Indian immigration. Intensive, as opposed to extensive examination of these factors dictated the adoption of a thematic rather than a chronological approach. The methodology employed was interdisciplinary in nature, utilizing theoretical material drawn from the disciplines of sociology and anthropology. It was found that the East Indian community was an alienated ethnic group which lived on the social fringes of the host society. Integration and acceptance of the East Indians did not take place as a result of vast differences in the cultures and institutions of their country of origin and the host society, but more importantly, because the immigrants themselves did not want to integrate. The East Indians were sojourners who hoped to return to India in their old age to enjoy the wealth they had acquired abroad.