cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
All orders breakup of heavy exotic nuclei in a semiclassical model
Creators: name: Garcia-Camacho, A.
name: Bonaccorso, A.
name: Brink, D. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present a semiclassical and mostly analytical model of elastic neutron breakup reactions for exotic projectiles. Both nuclear and Coulomb induced reactions are considered and the potentials are treated to all orders in the interactions. Furthermore we introduce a technique which allows the use of the full Coulomb potential, thus including all multipoles besides the dipole. Results for deeply bound states as well as for halo initial states are presented and it is shown that experiments on heavy targets would be well suited to study exotic nuclei with tightly bound valence nucleons.
description: 10 pages, 17 figures. Accepted for publication in Nuclear Physics A
Forecasting the Remaining Duration of an Ongoing Solar Flare
Creators: name: Reep, Jeffrey W.
name: Barnes, Will T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The solar X-ray irradiance is significantly heightened during the course of a solar flare, which can cause radio blackouts due to ionization of the atoms in the ionosphere. As the duration of a solar flare is not related to the size of that flare, it is not directly clear how long those blackouts can persist. Using a random forest regression model trained on data taken from X-ray light curves, we have developed a direct forecasting method that predicts how long the event will remain above background levels. We test this on a large collection of flares observed with GOES-15, and show that it generally outperforms simple linear regression. This forecast is computationally light enough to be performed in real time, allowing for the prediction to be made during the course of a flare.
description: Resubmitted to Space Weather. Comments welcome!
Abundance diagnosis of E+A (post-starburst) galaxies
Creators: name: Goto, Tomotsugu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: E+A galaxies are characterized as a galaxy with strong Balmer absorption lines but without any [OII] or H$α$ emission lines. The existence of strong Balmer absorption lines means that E+A galaxies have experienced a starburst within the last $
description: Accepted for publication in MNRAS
Bruni, F.; Fiorentino, G.; (2013). Didattica e Tecnologie. Studi, percorsi e proposte. Carocci Editore
Creators: name: Longo, Damiano
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

description: EL.LE
Metal-insulator transition in highly conducting oriented polymers
Creators: name: Dupuis, N.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We suggest that highly conducting oriented polymers with a fibril structure can be modeled by a regular lattice of disordered metallic wires with a random first-neighbor interwire coupling which mimics the cross-links between fibrils. We show that such a model can be described by a non-linear sigma model. Within a one-loop self-consistent approximation, we determine the position of the metal-insulator transition as a function of interwire cross-links concentration, interwire coupling and number of polymer chains in a wire.
description: 9 pages (RevTex) + 3 postcript figures
Quasi-one-dimensional superconductors: from weak to strong magnetic field
Creators: name: Dupuis, N.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discuss the possible existence of a superconducting phase at high magnetic field in organic quasi-one-dimensional conductors. We consider in particular (i) the formation of a Larkin-Ovchinnikov-Fulde-Ferrell state, (ii) the role of a temperature-induced dimensional crossover occuring when the transverse coherence length $ξ_z(T)$ becomes of the order of the lattice spacing, and (iii) the effect of a magnetic-field-induced dimensional crossover resulting from the localization of the wave functions at high magnetic field. In the case of singlet spin pairing, only the combination of (i) and (iii) yields a picture consistent with recent experiments in the Bechgaard salts showing the existence of a high-field superconducting phase. We point out that the vortex lattice is expected to exhibit unusual characteristics at high magnetic field.
description: To be published in Journal of Superconductivity, Proceedings of the Workshop on "Exactly Aligned Magnetic Field Effects in Low-Dimensional Superconductors" (Kyoto, Nov. 1998)
Swain M.; Kinnear P.; Steinman L. (2011). Sociocultural Theory in Second Language Acquisition: An Introduction through Narratives. Bristol (UK): Multilingual Matters.
Creators: name: Bier, Ada
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

description: EL.LE
Nitrogen Dioxide Pollution as a Signature of Extraterrestrial Technology
Creators: name: Kopparapu, Ravi
name: Arney, Giada
name: Haqq-Misra, Jacob
name: Lustig-Yaeger, Jacob
name: Villanueva, Geronimo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: Nitrogen dioxide (NO$_2$) on Earth today has biogenic and anthropogenic sources. During the COVID-19 pandemic, observations of global NO$_2$ emissions have shown significant decrease in urban areas. Drawing upon this example of NO$_2$ as an industrial byproduct, we use a one-dimensional photochemical model and synthetic spectral generator to assess the detectability of NO$_2$ as an atmospheric technosignature on exoplanets. We consider cases of an Earth-like planet around Sun-like, K-dwarf and M-dwarf stars. We find that NO$_2$ concentrations increase on planets around cooler stars due to less short-wavelength photons that can photolyze NO$_2$. In cloud-free results, present Earth-level NO$_2$ on an Earth-like planet around a Sun-like star at 10pc can be detected with SNR ~5 within ~400 hours with a 15 meter LUVOIR-like telescope when observed in the 0.2 - 0.7micron range where NO$_2$ has a strong absorption. However, clouds and aerosols can reduce the detectability and could mimic the NO$_2$ feature. Historically, global NO$_2$ levels were 3x higher, indicating the capability of detecting a 40-year old Earth-level civilization. Transit and direct imaging observations to detect infrared spectral signatures of NO$_2$ on habitable planets around M-dwarfs would need several 100s of hours of observation time, both due to weaker NO$_2$ absorption in this region, and also because of masking features by dominant H$_2$O and CO$_2$ bands in the infrared part of the spectrum. Non-detection at these levels could be used to place upper limits on the prevalence of NO$_2$ as a technosignature.
description: Accepted to Astrophysical Journal (in press). 1-D photochemical code from 'Atmos' is available at: https://github.com/VirtualPlanetaryLaboratory/atmos
Two Loop Effective Kaehler Potential
Creators: name: Nyawelo, Tino S.
name: Nibbelink, Stefan Groot
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this talk we study the renormalization of the effective Kaehler potential at one and two loops for general four dimensional (non--renormalizable) N=1 supersymmetric theories described by arbitrary Kaehler potential, superpotential and gauge kinetic function. We consider the Wess-Zumino model as an example.
description: 4 pages. To appear in Proceedings of SUSY06, the 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions, UC Irvine, California, 12-17 June 2006
Menegale M. (ed.) (2013). Autonomy in Language Learning: Getting Learners Actively Involved [ePub]. Canterbury (UK): IATEFL
Creators: name: Bier, Ada
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

description: EL.LE
Immunologic neutrophil elastase levels in sequential aliquots of bronchoalveolar lavage
Creators: name: Elsser, Kimberley Anne
Publisher: name: University of British Columbia
Year: 2008

description: Pulmonary emphysema is a destructive disease of the peripheral lung that causes progressive loss of functional alveoli. It is considered that proteolytic enzymes, particularly neutrophil elastase (NE), play an important pathogenetic role in the development of emphysema. In order to evaluate the contribution of bronchial lining fluid to immunologic NE levels in bronchoalveolar lavage (BAL), NE levels and cell counts in sequential aliquots of BAL in 44 subjects were determined. The subjects were comprised of healthy volunteer smokers (n=20) and smokers, nonsmokers and ex-smokers who were patients undergoing diagnostic bronchoscopy for localized disease (n =24). Lavage was performed through a fiberoptic bronchoscope wedged into a segmental bronchus, using 5 x 50 ml aliquots of saline. The first two aliquots were analyzed separately while aliquots 3 to 5 were pooled for analysis. NE levels in unconcentrated BAL were assayed using a sensitive double-sandwich enzyme linked immunosorbent assay (ELISA). Mean NE levels were highest in aliquot 1 (2.16 ng/ml) and lowest in aliquot 3-5 (0.46 ng/ml). The percentage of neutrophils was highest in the first aliquot of BAL (10.6%) and lowest in the pooled aliquots 3-5 (4.4%). A significant correlation was established between the number of neutrophils present and the NE levels in the first aliquot of BAL in smokers. These data indicate that the number of neutrophils and NE levels are highest in aliquot 1 which reflects bronchial lining fluid, while NE levels in aliquots 3-5 of BAL, which reflect alveolar lining fluid and may be more important in the pathogenesis of emphysema, were lower.
Novello, Alberta (2014). La valutazione delle lingue straniere e seconde nella scuola. Dalla teoria alla pratica. Venezia: Edizioni Ca’ Foscari. «SAIL: Studi sull’apprendimento e l’insegnamento linguistico» 4
Creators: name: Menzinger, Costanza
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

description: EL.LE
The B-Supergiant Components of the Double-Lined Binary HD1383
Creators: name: Boyajian, T. S.
name: Gies, D. R.
name: Helsel, M. E.
name: Kaye, A. B.
name: McSwain, M. V.
name: Riddle, R. L.
name: Wingert, D. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new results from a study of high quality, red spectra of the massive binary star system HD 1383 (B0.5 Ib + B0.5 Ib). We determined radial velocities and revised orbital elements (P = 20.28184 +/- 0.0002 d) and made Doppler tomographic reconstructions of the component spectra. A comparison of these with model spectra from non-LTE, line blanketed atmospheres indicates that both stars have almost identical masses (M_2/M_1 = 1.020 +/- 0.014), temperatures (T_eff = 28000 +/- 1000 K), gravities (log g = 3.25 +/- 0.25), and projected rotational velocities (V sin i < 30 km/s). We investigate a number of constraints on the radii and masses of the stars based upon the absence of eclipses, surface gravity, stellar wind terminal velocity, and probable location in the Perseus spiral arm of the Galaxy, and these indicate a range in probable radius and mass of R/R_sun = 14 - 20 and M/M_sun = 16 - 35, respectively. These values are consistent with model evolutionary masses for single stars of this temperature and gravity. Both stars are much smaller than their respective Roche radii, so the system is probably in a pre-contact stage of evolution. A fit of the system's spectral energy distribution yields a reddening of E(B-V)=0.55 +/- 0.05 and a ratio of total-to-selective extinction of R=2.97 +/- 0.15. We find no evidence of H-alpha emission from colliding stellar winds, which is probably the consequence of the low gas densities in the colliding winds zone.
description: Accepted for publication in ApJ: 20 pages, 5 figures
Contos e canções, questionário semântico
Creators: name: Brandão, Amaral
name: Brandão, Maria Iraci
name: Vieira Cândido, Gláucia
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: swo

description: Lado A: Contos e canções em shanenawá. Lado B: dado 322 ao 525.
Diffractive rho + lepton pair production at an electron-ion collider
Creators: name: Cosyn, W.
name: Pire, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In high energy electron-ion colliders, a new way to probe nucleon structure becomes available through diffractive reactions, where the incident particle produces a very energetic almost forward particle. QCD describes these reactions as due to the exchange of a Pomeron which may be perturbatively described as a dressed two-gluon state, provided a hard scale allows the factorization of the amplitude in terms of two impact factors convoluted with a Pomeron propagator. We consider here a process where such a description allows to access hadronic structure in terms of the generalized parton distributions, namely the electroproduction of a forward $ρ$ meson and a timelike deeply virtual photon, separated by a large rapidity gap. We explore the dependence of the cross section on the kinematic variables and study the dependence on the non-perturbative inputs (generalized parton distributions, distribution amplitude). Our leading order studies show the cross section is mainly sensitive to the GPD model input, but the small size of the cross sections could prohibit straightforward analysis of this process at planned facilities.
description: published version; corrected typos, conclusion discussion expanded
Vedovelli M. (a cura di). La migrazione globale delle lingue. Lingue in (super-)contatto nei contesti migratori del mondo globale, Studi Emigrazione, n. 191, 2013
Creators: name: Masillo, Paola
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

description: EL.LE
High-precision wavelength calibration of astronomical spectrographs with laser frequency combs
Creators: name: Murphy, M. T.
name: Udem, Th.
name: Holzwarth, R.
name: Sizmann, A.
name: Pasquini, L.
name: Araujo-Hauck, C.
name: Dekker, H.
name: D'Odorico, S.
name: Fischer, M.
name: Hänsch, T. W.
name: Manescau, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We describe a possible new technique for precise wavelength calibration of high-resolution astronomical spectrographs using femtosecond-pulsed mode-locked lasers controlled by stable oscillators such as atomic clocks. Such `frequency combs' provide a series of narrow modes which are uniformly spaced according to the laser's pulse repetition rate and whose absolute frequencies are known a priori with relative precision better than 10^{-12}. Simulations of frequency comb spectra show that the photon-limited wavelength calibration precision achievable with existing echelle spectrographs should be ~1 cm/s when integrated over a 4000A range. Moreover, comb spectra may be used to accurately characterise distortions of the wavelength scale introduced by the spectrograph and detector system. The simulations show that frequency combs with pulse repetition rates of 5-30GHz are required, given the typical resolving power of existing and possible future echelle spectrographs. Achieving such high repetition rates, together with the desire to produce all comb modes with uniform intensity over the entire optical range, represent the only significant challenges in the design of a practical system. Frequency comb systems may remove wavelength calibration uncertainties from all practical spectroscopic experiments, even those combining data from different telescopes over many decades.
description: 10 pages, 6 figures, 1 table. Accepted by MNRAS. v2: Fig. 3 augmented and minor changes to text (including extended title)
Generalized Gibbs Ensemble of 2D CFTs with U(1) Charge from the AGT Correspondence
Creators: name: Novaes, Fábio
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Generalized Gibbs Ensemble (GGE) is relevant to understand the thermalization of quantum systems with an infinite set of conserved charges. In this work, we analyze the GGE partition function of 2D Conformal Field Theories (CFTs) with a U(1) charge and quantum Benjamin-Ono$_{2}$ (qBO$_{2}$) hierarchy charges. We use the Alday-Gaiotto-Tachikawa (AGT) correspondence to express the thermal trace in terms of the Alba-Fateev-Litvinov-Tarnopolskiy (AFLT) basis of descendants, which diagonalizes all charges. We analyze the GGE partition function in the thermodynamic semiclassical limit, including the first order quantum correction. We find that the equality between GGE averages and primary eigenvalues of the qBO$_{2}$ charges is attainable in the strict large $c$ limit and potentially violated at the subleading $1/c$ order. We also obtain the finite $c$ partition function when only the first non-trivial charge is turned on, expressed in terms of partial theta functions. Our results should be relevant to the eigenstate thermalization hypothesis for charged CFTs, Warped CFTs and effective field theory descriptions of condensed matter systems.
description: 33+19 pages. v2: added comments and refs on ETH for general operators, minor text corrections
MOESM10 of Construction and comprehensive analysis of a ceRNA network to reveal potential prognostic biomarkers for hepatocellular carcinoma
Creators: name: Long, Junyu
name: Bai, Yi
name: Yang, Xiaobo
name: Lin, Jianzhen
name: Yang, Xu
name: Wang, Dongxu
name: He, Li
name: Zheng, Yongchang
name: Zhao, Haitao
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer

description: Additional file 10: Table S10. Three DEmiRNAs were associated with the overall survival of patients with HCC in the TCGA HCC cohort.
Using Intelligent Agents to understand organisational behaviour
Creators: name: Celia, Helen
name: Clegg, Christopher
name: Robinson, Mark
name: Siebers, Peer-Olaf
name: Aickelin, Uwe
name: Sprigg, Christine
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: This paper introduces two ongoing research projects which seek to apply computer modelling techniques in order to simulate human behaviour within organisations. Previous research in other disciplines has suggested that complex social behaviours are governed by relatively simple rules which, when identified, can be used to accurately model such processes using computer technology. The broad objective of our research is to develop a similar capability within organisational psychology.
The correction of the littlest Higgs model to the Higgs production process $e^+e^-\to e^+e^-H$ at the ILC
Creators: name: Wang, Xuelei
name: Liu, Yaobei
name: Chen, Jihong
name: Yang, Hua
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The littlest Higgs model is the most economical one among various little Higgs models. In the context of the littlest Higgs model, we study the process $e^{+}e^{-}\to e^{+}e^{-}H$ at the ILC and calculate the correction of the littlest Higgs model to the cross section of this process. The results show that, in the favorable parameter spaces preferred by the electroweak precision data, the value of the relative correction is in the range from a few percent to tens percent. In most case, the correction is large enough to reach the measurement precision of the ILC. Therefore, the correction of the littlest Higgs model to the process $e^{+}e^{-}\to e^{+}e^{-}H$ might be detected at the ILC which will give an ideal way to test the model.
description: 12 pages, 4 figures
Charge-Transfer induced EUV and Soft X-ray emissions in the Heliosphere
Creators: name: Koutroumpa, D.
name: Lallement, R.
name: Kharchenko, V.
name: Dalgarno, A.
name: Pepino, R.
name: Izmodenov, V.
name: Quémerais, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the EUV/soft X-ray emission generated by charge transfer between solar wind heavy ions and interstellar H and He neutral atoms in the inner Heliosphere. We present heliospheric maps and spectra for stationary solar wind, depending on solar cycle phase, solar wind anisotropies and composition, line of sight direction and observer position. A time-dependant simulation of the X-ray intensity variations due to temporary solar wind enhancement is compared to XMM Newton recorded data of the Hubble Deep Field North observation (Snowden et al. 2004). Results show that the heliospheric component can explain a large fraction of the line intensity below 1.3 keV, strongly attenuating the need for soft X-ray emission from the Local Interstellar Bubble.
description: 18 pages, 13 figures (5 in online material,for colour figures contact the authors), 3 tables, accepted in A&A
Scaling of global properties of fluctuating and mean streamwise velocities in pipe flow: Characterisation of a high Reynolds number transition region
Creators: name: Basse, Nils T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We study the global, i.e. radially averaged, high Reynolds number (asymptotic) scaling of streamwise turbulence intensity squared defined as ${I^2=\overline{u^2}/U^2}$, where $u$ and $U$ are the fluctuating and mean velocities, respectively (overbar is time averaging). The investigation is based on the mathematical abstraction that the logarithmic region in wall turbulence extends across the entire inner and outer layers. Results are matched to spatially integrated Princeton Superpipe measurements [Hultmark M, Vallikivi M, Bailey SCC and Smits AJ. Logarithmic scaling of turbulence in smooth- and rough-wall pipe flow. J. Fluid Mech. Vol. 728, 376-395 (2013)]. Scaling expressions are derived both for log-law and power-law functions of radius. A transition to asymptotic scaling is found at a friction Reynolds number $Re_τ \sim 11000$.
ПРОБЛЕМЫ ИНТЕРПРЕТАЦИИ ЭКОНОМИЧЕСКИХ ТЕРМИНОВ В ПРОЦЕССЕ ПЕРЕВОДА НА УЗБЕКСКИЙ ЯЗЫК
Creators: name: Кодиров Уринбой Орифжонович преподаватель кафедры русского языка и литературы Андижанского государственного университета
Publisher: name: Zenodo
Year: 2024

description: С древнейших времён люди использовали переводы с одного языка на другой. Но никто не может сказать, когда же был сделан первый перевод. Известно, что произошло это тогда, когда люди, говорящие на разных языках, начали общаться при помощи посредника - переводчика. В данной статье рассматриваются Проблемы интерпретации экономических терминов в процессе перевода на узбекский язык.

Ключевые слова: экономическая терминология, прикладное терминоведение, Лингвистические классификации, термины, экономическая теория, лексико-синтаксические, морфологические и лексико-фразовые
Amnesty Policy and Elite Persistence in the Postbellum South: Evidence from a Regression Discontinuity Design
Creators: name: Poulos, Jason
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Economics (econ.GN)
subject: Applications (stat.AP)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: This paper investigates the impact of Reconstruction-era amnesty policy on the officeholding and wealth of elites in the postbellum South. Amnesty policy restricted the political and economic rights of Southern elites for nearly three years during Reconstruction. I estimate the effect of being excluded from amnesty on elites' future wealth and political power using a regression discontinuity design that compares individuals just above and below a wealth threshold that determined exclusion from amnesty. Results on a sample of Reconstruction convention delegates show that exclusion from amnesty significantly decreased the likelihood of ex-post officeholding. I find no evidence that exclusion impacted later census wealth for Reconstruction delegates or for a larger sample of known slaveholders who lived in the South in 1860. These findings are in line with previous studies evidencing both changes to the identity of the political elite, and the continuity of economic mobility among the planter elite across the Civil War and Reconstruction.
Selection of ThAr lines for wavelength calibration of echelle spectra and implications for variations in the fine-structure constant
Creators: name: Murphy, M. T.
name: Tzanavaris, P.
name: Webb, J. K.
name: Lovis, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Echelle spectrographs currently provide some of the most precise and detailed spectra in astronomy, the interpretation of which sometimes depends on the wavelength calibration accuracy. In some applications, such as constraining cosmological variations in the fundamental constants from quasar absorption lines, the wavelength calibration is crucial. Here we detail an algorithm for selecting thorium-argon (ThAr) emission lines for wavelength calibration which incorporates the properties of both a new laboratory wavelength list and the spectrograph of interest. We apply the algorithm to the Very Large Telescope Ultraviolet and Visual Echelle Spectrograph (UVES) and demonstrate a factor of >3 improvement in the wavelength calibration residuals (i.e. random errors) alone. It is also found that UVES spectra calibrated using a previous, widely distributed line-list contain systematic +/-30-75 m/s distortions of the wavelength scale over both short and long wavelength ranges. These distortions have important implications for current UVES constraints on cosmological variations in the fine-structure constant. The induced systematic errors are most severe for Mg/FeII quasar absorbers in the redshift range 1.2 < z < 2.3, with individual absorbers studied by recent authors containing systematic errors up to 4 times larger than quoted statistical errors.
description: 10 pages, 11 figures (16 EPS files). Accepted by MNRAS. Supplementary material, including electronic versions of all input and output ThAr atlases and colour versions of Fig. 3(right) available at http://www.ast.cam.ac.uk/~mim/pub.html
Questionário do SIL-Museu Nacional (cont.)
Creators: name: Vieira Cândido, Gláucia
name: Brandão, Maria Iraci
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: swo

description: Lado A: continuação dos dados ref. ao questionário do SIL-Museu Nacional, do 313 ao 334. Lado B: dados ref. ao questionário p/comparação c/aquele feito por Aguiar (1987), do 1 ao 104. Lado B: do 334 ao 341.
Two-Particle Microrheology of quasi-2D Viscous Systems
Creators: name: Prasad, V.
name: Koehler, S. A.
name: Weeks, Eric R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We study the correlated motions of colloidal particles in a quasi-2D system (Human Serum Albumin (HSA) protein molecules at an air-water interface) for different surface viscosities $η_{s}$. We observe a transition in the behavior of the correlated motion, from 2-D interface dominated at high $η_{s}$ to bulk fluid-dependent at low $η_{s}$. The correlated motions can be scaled onto a master curve which captures the features of this transition. This master curve also characterizes the spatial dependence of the flow field of a viscous interface in response to a force. From the flow field and the correlated particle motions, we calculate a two-particle MSD (mean square displacement) for direct comparison with rheological measurements.
description: 4 pages, 4 figures, submitted to PRL
Lipoprotein delivery of benzoporphyrin derivative : a photosensitizer for photodynamic therapy
Creators: name: Allison, Beth Anne
Publisher: name: University of British Columbia
Year: 2008

description: Photodynamic Therapy (PDT) involves the systemic administration of a light activated drug combined with the precise delivery of light to produce a selective cytotoxic reaction. Benzoporphyrin derivative (BPD) has been shown to be a potent photosensitizer both in vitro and in vivo and is therefore a good candidate for PDT. Since BPD is administered systemically, it is important to know the factors which affect its biodistribution. In this thesis, the in vitro and in vivo distribution of BPD in plasma was examined and the majority of BPD was recovered with the plasma lipoproteins. Association of other photosensitizers with plasma lipoproteins has been show to increase accumulation in tumours and enhance tumour cell damage upon light activation. Based on this information, we hypothesized that association of BPD with lipoproteins, before administration, would increase the accumulation of the photosensitizer in neoplastic tissue and therefore enhance the efficacy of PDT. The effect of precomplexing BPD with purified lipoproteins on the biodistribution of the drug in vivo was studied in tumour bearing mice. Low density lipoprotein (LDL) or high density lipoprotein (HDL) associated BPD accumulated in tumour tissue in greater amounts than aqueous BPD. The association of BPD with either LDL or HDL increased tumour cell killing in vitro and the efficacy of in vivo photosensitization. In particular, LDL-BPD mixtures led to enhanced tumour eradication compared to BPD administered in aqueous solution or unfractionated plasma. These results suggest that the association of BPD with lipoproteins can have a profound effect on the eradication of tumours in vivo. In an attempt to define the mechanism by which LDL enhanced the delivery of BPD to tumours, we performed in vitro accumulation experiments using ¹⁴C-labelled BPD LDL mixtures on human fibroblast cell lines. LDL receptor-mediated internalization of LDL-BPD complexes, as well as LDL receptor facilitated diffusion mechanisms, were involved in cellular accumulation of the drug and, therefore, may be partially responsible for the enhanced efficacy of PDT in the presence of LDL. The results of these studies suggest that lipid based formulations should be designed to deliver photosensitzers preferentially to the LDL fraction of plasma.
La formazione linguistica all’università
Creators: name: Daloiso, Michele
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

Since foreign language skills are assuming a pivotal role in the job market, many higher education institutions in Europe are offering compulsory language courses to enhance these skills among undergraduate and postgraduate students. However, Italian universities do not seem to invest sufficiently in foreign language learning. The paper discusses the results of a survey among 3.000 students at Ca’ Foscari University in Venice which aimed at investigating the students’ point of view on this topic by collecting data on three areas: earlier foreign-language educational path, perceived need of foreign language learning, students’ beliefs about language learning.

description: EL.LE
Prescriptivism and the genre of pedagogical reference grammars for Italian students
Creators: name: Nava, Andrea
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

Despite being thought of as – rightly or wrongly – one of the essential tools for in- structed language learning, pedagogical reference grammar books are still mainly uncharted ter- ritory within English grammaticographical research. The aim of this paper is to illustrate some distinctive features of the genre of pedagogical reference grammar books for Italian students of English vis-à-vis the notion of prescriptivism. The genre originated in Italy in the 80s of last cen- tury as communicative approaches started to become mainstream in Italian schools. The analysis is based on a corpus of eleven grammar books and shows that the genre is rooted in a view of grammar and an approach to grammar selection and presentation which may be dubbed ‘peda- gogical prescriptivism’.

description: EL.LE
Drag reduction of a rectangular prism through momentum injection
Creators: name: Dobric, Andrew
Publisher: name: University of British Columbia
Year: 2008

description: Drag of a two-dimensional rectangular prism in the presence of momentum injection is studied experimentally. Moving Surface Boundary-Layer Control (MSBC), achieved here through a pair of rotating cylinders serving as momentum injection elements, was investigated to assess the effect of: (i) tangential velocity (Uc ) of the cylinder surface with respect to the free stream wind velocity (U); (ii) angle of attack (a) of the prism surface with respect to the free stream; (iii) roughness of the cylinder surface. As the wake-body interaction is an important aspect of the associated aerodynamics, frequency of the shedding vortices, as reflected in the Strouhal number, was also monitored. Results suggest that, under optimum combinations of the system parameters, a drag reduction of around 70% can be realized. The study has considerable implication to the drag reduction of road vehicles, particularly the tractor-trailer truck configurations.
On the non--existence of certain hyperovals in dual André planes of order $2^{2h}$
Creators: name: Aguglia, A.
name: Giuzzi, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 51A35, 51E21

description: No regular hyperoval of the Desarguesian affine plane $AG(2,2^{2h})$, with $h>1$, is inherited by a dual André plane of order $2^{2h}$ with dimension 2 over its centre.
description: 6 pages; reviewed version with generalisation to some dual Andr\'e planes, as well as updated proofs
White Noise from Dark Matter: 21 cm Observations of Early Baryon Collapse
Creators: name: Zurek, Kathryn M.
name: Hogan, Craig J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In concordance cosmology, dark matter density perturbations generated by inflation lead to nonlinear, virialized minihalos, into which baryons collapse at redshift $z \sim 20$. We survey here novel baryon evolution produced by a modification of the power spectrum from white noise density perturbations at scales below $k \sim 10 h {Mpc}^{-1}$ (the smallest scales currently measured with the Lyman-$α$ forest). Exotic dark matter dynamics, such as would arise from scalar dark matter with a late phase transition (similar to an axion, but with lower mass), create such an amplification of small scale power. The dark matter produced in such a phase transition collapses into minihalos, with a size given by the dark matter mass within the horizon at the phase transition. If the mass of the initial minihalos is larger than $\sim 10^{-3} M_\odot$, the modified power spectrum is found to cause widespread baryon collapse earlier than standard $Λ$CDM, leading to earlier gas heating. It also results in higher spin temperature of the baryons in the 21 cm line relative to $Λ$CDM at redshifts $z > 20$ if the mass of the minihalo is larger than $1 M_\odot$. It is estimated that experiments probing 21 cm radiation at high redshift will contribute a significant constraint on dark matter models of this type for initial minihalos larger than $\sim 10 M_\odot$. Early experiments reaching to $z\approx 15$ will constrain minihalos down to $\sim 10^3 M_\odot$.
description: 8 pages, 9 figures
Efficient constraint propagation engines
Creators: name: Schulte, Christian
name: Stuckey, Peter J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences
subject: D.3.2; D.3.3

description: This paper presents a model and implementation techniques for speeding up constraint propagation. Three fundamental approaches to improving constraint propagation based on propagators as implementations of constraints are explored: keeping track of which propagators are at fixpoint, choosing which propagator to apply next, and how to combine several propagators for the same constraint. We show how idempotence reasoning and events help track fixpoints more accurately. We improve these methods by using them dynamically (taking into account current domains to improve accuracy). We define priority-based approaches to choosing a next propagator and show that dynamic priorities can improve propagation. We illustrate that the use of multiple propagators for the same constraint can be advantageous with priorities, and introduce staged propagators that combine the effects of multiple propagators with priorities for greater efficiency.
description: 45 pages, 1 figure, 14 tables
New connection formulae for the q-orthogonal polynomials via a series expansion of the q-exponential
Creators: name: Chakrabarti, R.
name: Jagannathan, R.
name: Mohammed, S. S. Naina
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Using a realization of the q-exponential function as an infinite multiplicative sereis of the ordinary exponential functions we obtain new nonlinear connection formulae of the q-orthogonal polynomials such as q-Hermite, q-Laguerre and q-Gegenbauer polynomials in terms of their respective classical analogs.
description: 14 pages
Scientific reticence and sea level rise
Creators: name: Hansen, J. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: I suggest that a "scientific reticence" is inhibiting communication of a threat of potentially large sea level rise. Delay is dangerous because of system inertias that could create a situation with future sea level changes out of our control. I argue for calling together a panel of scientific leaders to hear evidence and issue a prompt plain-written report on current understanding of the sea level change issue.
description: 9 pages, no figures; submitted to Environmental Research Letters
The search for the origin of the Local Bubble redivivus
Creators: name: Fuchs, B.
name: Breitschwerdt, D.
name: de Avillez, M. A.
name: Dettbarn, C.
name: Flynn, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a new unbiased search and analysis of all B stars in the solar neighbourhood (within a volume of 400 pc diameter) using the Arivel data base to track down the remains of the OB associations, which hosted the supernovae responsible for the Local Bubble in the interstellar gas. We find after careful dereddening and by comparison with theoretical isochrones, that besides the Upper Scorpius the Upper Centaurus Lupus and Lower Centaurus Crux subgroups are the youngest stellar associations in the solar neighbourhood with ages of 20 to 30 Myr, in agreement with previous work. In search for the ``smoking gun'' of the origin of the Local Bubble, we have traced the paths of the associations back into the past and found that they entered the present bubble region 10 to 15 Myr ago. We argue that the Local Bubble began to form then and estimate that 14 to 20 supernovae have gone off since. It is shown that the implied energy input is sufficient to excavate a bubble of the presently observed size.
description: 10 pages, 8 figures, accepted by Mon. Not. R. Astron. Soc
Tau Lepton Production in ep Collisions at HERA
Creators: name: H1 Collaboration
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The production of tau leptons in ep collisions is investigated using data recorded by the H1 detector at HERA in the period 1994-2000. Tau leptons are identified by detecting their decay products, using leptonic and hadronic decay modes. The cross section for the production of tau lepton pairs is measured for the first time at HERA. Furthermore, a search for events with an energetic isolated tau lepton and with large missing transverse momentum is performed. The results are found to be in agreement with the Standard Model predictions.
description: 28 pages, 6 figures, 6 tables
A Multi-Agent Simulation of Retail Management Practices
Creators: name: Siebers, Peer-Olaf
name: Aickelin, Uwe
name: Celia, Helen
name: Clegg, Christopher
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: We apply Agent-Based Modeling and Simulation (ABMS) to investigate a set of problems in a retail context. Specifically, we are working to understand the relationship between human resource management practices and retail productivity. Despite the fact we are working within a relatively novel and complex domain, it is clear that intelligent agents do offer potential for developing organizational capabilities in the future. Our multi-disciplinary research team has worked with a UK department store to collect data and capture perceptions about operations from actors within departments. Based on this case study work, we have built a simulator that we present in this paper. We then use the simulator to gather empirical evidence regarding two specific management practices: empowerment and employee development.
PairRank: Online Pairwise Learning to Rank by Divide-and-Conquer
Creators: name: Jia, Yiling
name: Wang, Huazheng
name: Guo, Stephen
name: Wang, Hongning
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Online Learning to Rank (OL2R) eliminates the need of explicit relevance annotation by directly optimizing the rankers from their interactions with users. However, the required exploration drives it away from successful practices in offline learning to rank, which limits OL2R's empirical performance and practical applicability. In this work, we propose to estimate a pairwise learning to rank model online. In each round, candidate documents are partitioned and ranked according to the model's confidence on the estimated pairwise rank order, and exploration is only performed on the uncertain pairs of documents, i.e., \emph{divide-and-conquer}. Regret directly defined on the number of mis-ordered pairs is proven, which connects the online solution's theoretical convergence with its expected ranking performance. Comparisons against an extensive list of OL2R baselines on two public learning to rank benchmark datasets demonstrate the effectiveness of the proposed solution.
description: The Web Conference 2021
Recursive relations for a quiver gauge theory
Creators: name: Park, Jaemo
name: Sim, Woojoo
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the recursive relations for a quiver gauge theory with the gauge group $SU(N_1)\times SU(N_2)$ with bifundamental fermions transforming as $(N_1,\bar{N_2})$. We work out the recursive relation for the amplitudes involving a pair of quark and antiquark and gluons of each gauge group. We realize directly in the recursive relations the invariance under the order preserving permutations of the gluons of the first and the second gauge group. We check the proposed relations for MHV, 6-point and 7-point amplitudes and find the agreements with the known results and the known relations with the single gauge group amplitudes. The proposed recursive relation is much more efficient in calculating the amplitudes than using the known relations with the amplitudes of the single gauge group.
description: 33 pages and 2 figures, minor corrections
Questionário para comparação con Aguiar (cont.), canções
Creators: name: Brandão, Maria Iraci
name: Vieira Cândido, Gláucia
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: swo

description: Lado A: do dado 105 ao 295. Lado B: do dado 296 ao 455. Tres canções.
EXPLORING HEAVY METAL CONTAMINATION: DETERMINATION OF RESIDUES IN SLAUGHTERED CATTLE AT SOKOTO AND GUSAU ABATTOIRS, NIGERIA
Creators: name: Ibrahim, Musa Aliyu
name: Aisha, Abdullahi Shehu
Publisher: name: AMERICAN SERIAL
Year: 2024
Subjects: Heavy metal contamination
Environmental pollution
Human health
Ecosystems
Mitigation strategies

description: The contamination of the environment with heavy metals represents a pervasive global challenge, attributed to a myriad of human and natural activities. Human practices such as the dumping of waste materials, utilization of agricultural pesticides and chemical fertilizers, oil spillages, and industrial activities, alongside natural phenomena like volcanic eruptions, contribute to the dissemination of toxic metals into ecosystems. The consequences of heavy metal pollution extend beyond environmental degradation, posing significant health risks to both human populations and wildlife through the contamination of the food chain. This paper synthesizes insights from Matthew et al. (2002) and Srikanth et al. (2004) to shed light on the multifaceted causes and consequences of heavy metal contamination in the environment. By elucidating the pathways through which toxic metals infiltrate ecosystems and impact human health, this study underscores the urgency of addressing heavy metal pollution through targeted mitigation and remediation efforts.
Conservations Laws for Critical Kohn-Laplace Equations on the Heisenberg Group
Creators: name: Bozhkov, Yuri
name: Freire, Igor Leite
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35H10, 58J70

description: Using the complete group classification of semilinear differential equations on the three-dimensional Heisenberg group carried out in a preceding work, we establish the conservation laws for the critical Kohn-Laplace equations via the Noether's Theorem.
description: 9 pages, 1 table, submitted for publication