cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Adjoint data assimilation in an equatorial coupled atmosphere-ocean model
Creators: name: Lu, Jingxi
Publisher: name: University of British Columbia
Year: 2009

description: A general procedure of adjoint data assimilation for atmosphere-ocean coupled systems was developed. A simple equatorial coupled atmosphere-ocean model, with the atmosphere and the ocean each represented by a single-layer linear shallow water model, was then used to explore the effects of data type (wind or sea level height (SLH)), data sparsity, noise, and initial guess on the retrieval of model parameters and initial conditions. Six parameters (two Rayleigh damping coefficients, two Newtonian cooling coefficients, and two coupling parameters) of the simple model were estimated with its initial conditions specified. By assimilating the wind and SLH data, the temporal sparsity of the data was found to be more detrimental for parameter estimation than their spatial sparsity, and sparse wind data were more detrimental than sparse SLH data. Longer assimilation windows improved the parameter estimation, but the best window length for the wind data was not the best for the SLH data. A priori information for individual parameters as implemented in the cost function was useful in providing information for the size of the parameters and in enhancing the convexity of the cost function, but not as a substitute for inadequate data. Three initial oceanic fields (SLH and two horizontal current components) in the simple coupled model were estimated with the six parameters specified. By assimilating either the wind or SLH data, it was found that the SLH data were more efficient in retrieving the oceanic initial conditions than the wind data, and the initial SLH field was more accurately retrieved than the initial currents. The current fields were sensitive to the temporal density of data, especially with wind data, where once a day would be the minimum density needed for a satisfactory retrieval. The error in the magnitude of the initial guess was readily corrected, while the large phase error was not even with both the wind and SLH available. Assimilation of noisy data showed that the retrieval of the initial conditions was far more sensitive to noise in the SLH data than in the wind data.
Small amplitude quasi-breathers and oscillons
Creators: name: Fodor, Gyula
name: Forgács, Péter
name: Horváth, Zalán
name: Lukács, Árpád
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Quasi-breathers (QB) are time-periodic solutions with weak spatial localization introduced in G. Fodor et al. in Phys. Rev. D. 74, 124003 (2006). QB's provide a simple description of oscillons (very long-living spatially localized time dependent solutions). The small amplitude limit of QB's is worked out in a large class of scalar theories with a general self-interaction potential, in $D$ spatial dimensions. It is shown that the problem of small amplitude QB's is reduced to a universal elliptic partial differential equation. It is also found that there is the critical dimension, $D_{crit}=4$, above which no small amplitude QB's exist. The QB's obtained this way are shown to provide very good initial data for oscillons. Thus these QB's provide the solution of the complicated, nonlinear time dependent problem of small amplitude oscillons in scalar theories.
description: 24 pages, 19 figures
The water abundance in Jupiter's equatorial zone
Creators: name: Li, Cheng
name: Ingersoll, Andrew
name: Bolton, Scott
name: Levin, Steven
name: Janssen, Michael
name: Atreya, Sushil
name: Lunine, Jonathan
name: Steffes, Paul
name: Brown, Shannon
name: Guillot, Tristan
name: Allison, Michael
name: Arballo, John
name: Bellotti, Amadeo
name: Adumitroaie, Virgil
name: Gulkis, Samuel
name: Hodges, Amoree
name: Li, Liming
name: Misra, Sidharth
name: Orton, Glenn
name: Oyafuso, Fabiano
name: Santos-Costa, Daniel
name: Waite, Hunter
name: Zhang, Zhimeng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Oxygen is the most common element after hydrogen and helium in Jupiter's atmosphere, and may have been the primary condensable (as water ice) in the protoplanetary disk. Prior to the Juno mission, in situ measurements of Jupiter's water abundance were obtained from the Galileo Probe, which dropped into a meteorologically anomalous site. The findings of the Galileo Probe were inconclusive because the concentration of water was still increasing when the probe died. Here, we initially report on the water abundance in the equatorial region, from 0 to 4 degrees north latitude, based on 1.25 to 22 GHz data from Juno Microwave radiometer probing approximately 0.7 to 30 bars pressure. Because Juno discovered the deep atmosphere to be surprisingly variable as a function of latitude, it remains to confirm whether the equatorial abundance represents Jupiter's global water abundance. The water abundance at the equatorial region is inferred to be $2.5_{-1.6}^{+2.2}\times10^3$ ppm, or $2.7_{-1.7}^{+2.4}$ times the protosolar oxygen elemental ratio to H (1$σ$ uncertainties). If reflective of the global water abundance, the result suggests that the planetesimals formed Jupiter are unlikely to be water-rich clathrate hydrates.
description: 27 pages, 7 figures
Improved analysis of moments of F3 in neutrino-nucleon scattering using the Bernstein polynomial method
Creators: name: Brooks, Paul M.
name: Maxwell, C. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use recently calculated next-to-next-to-leading order (NNLO) anaomalous dimension coefficients for the moments of the xF_3 structure function in neutrino- nucleon scattering, together with the corresponding three-loop Wilson coefficients, to obtain improved QCD predictions for both odd and even moments. To investigate the issue of renormalization scheme dependence the Complete Renormalization Group Improvement (CORGI) approach is used, in which all dependence on renormalization or factorization scales is avoided by a complete resummation of RG-predictable scale logarithms. We also consider predictions using the method of effective charges and compare with the standard ``physical scale'' choice. The Bernstein polynomial method is used to construct experimental moments from the xF_3 data of the CCFR collaboration insensitive to the data in the region of x which is inaccessible experimentally. Direct fits for Λ^(5)MSbar (α_s(M_Z)) are performed. The CORGI fits including target mass corrections give a value α_s(M_Z)=0.119+/-0.002, nicely consistent with the world average. The effective charge and physical scale fits give slightly smaller values which are still consistent within the errors.
description: 33 pages, 8 figures, typos corrected, discussion of effects of correlations on \chi^2 analysis
Dorado and its member galaxies II. A UVIT picture of the NGC 1533 substructure
Creators: name: Rampazzo, R.
name: Mazzei, P.
name: Marino, A.
name: Bianchi, L.
name: Ciroi, S.
name: Held, E. V.
name: Iodice, E.
name: Postma, J.
name: Ryan-Weber, E.
name: Spavone, M.
name: Uslenghi, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Dorado is a nearby (17.69 Mpc) strongly evolving galaxy group in the Southern Hemisphere. We are investigating the star formation in this group. This paper provides a FUV imaging of NGC 1533, IC 2038 and IC 2039, which form a substructure, south west of the Dorado group barycentre. FUV CaF2-1 UVIT-Astrosat images enrich our knowledge of the system provided by GALEX. In conjunction with deep optical wide-field, narrow-band Halpha and 21-cm radio images we search for signatures of the interaction mechanisms looking in the FUV morphologies and derive the star formation rate. The shape of the FUV luminosity profile suggests the presence of a disk in all three galaxies. FUV emission is detected out to the optical size for IC 2038, and in compact structures corresponding to Halpha and HII bright features in NGC 1533. A faint FUV emission, without an optical counterpart, reminiscent of the HI structure that surrounds the outskirts of NGC 1533 and extends up to IC 2038/2039, is revealed above the local background noise.
description: 13 pages, 8 figures, 3 tables, accepted for publication in The Journal of Astrophysics and Astronomy
Dörr, Elfriede: Lernort Weltgebetstag
Creators: name: Schütz, J. Georg
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 59 Nr. 3 (2010): Ökumenische Rundschau, Band 59, Heft 3
All-Optical Nonlinear Pre-Compensation of Long-Reach Unrepeatered Systems
Creators: name: Kaminski, Pawel M.
name: Sutili, Tiago
name: Júnior, José Hélio da Cruz
name: Simões, Glauco C. C. P.
name: Da Ros, Francesco
name: Yankov, Metodi P.
name: Hansen, Henrik E.
name: Clausen, Anders T.
name: Forchhammer, Søren
name: Oxenløwe, Leif K.
name: Figueiredo, Rafael C.
name: Galili, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Signal Processing (eess.SP)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We numerically demonstrate an all-optical nonlinearity pre-compensation module for state-of-the-art long-reach Raman-amplified unrepeatered links. The compensator design is optimized in terms of propagation symmetry to maximize the performance gains under WDM transmission, achieving 4.0dB and 2.6dB of SNR improvement for 250-km and 350-km links.
Dynamic Models of the Sun from the Convection Zone to the Chromosphere
Creators: name: Wedemeyer-Böhm, Sven
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The chromosphere in internetwork regions of the quiet Sun was regarded as a static and homogeneous layer for a long time. Thanks to advances in observations and numerical modelling, the wave nature of these atmospheric regions received increasing attention during the last decade. Recent three-dimensional radiation magnetohydrodynamic simulations with CO5BOLD feature the chromosphere of internetwork regions as a dynamic and intermittent phenomenon. It is a direct product of interacting waves that form a mesh-like pattern of hot shock fronts and cool post-shock regions. The waves are excited self-consistently at the top of the convection zone. In the middle chromosphere above an average height of 1000 km, plasma beta gets larger than one and magnetic fields become more important. The model chromosphere exhibits a magnetic field that is much more homogeneous than in the layers below and evolves much faster. That includes fast propagating (MHD) waves. Further improvements of the simulations like time-dependent hydrogen ionisation are currently in progress. This class of models is capable of explaining apparently contradicting diagnostics such as carbon monoxide and UV emission at the same time.
description: 6 pages, 2 figures, to appear in proceedings of IAU symposium 239, August 21 - 25, 2006, Prague
Irrigation Payments Made by Rainbow Ranche Limited to the Okanagan Centre Irrigation and Power Company, June 2, 1927
Creators: name: Okanagan Centre Irrigation And Power Co.
Publisher: name: The University of British Columbia
Year: 2017

description: Irrigation payments made by Rainbow Ranche Limited to the Okanagan Centre Irrigation and Power Company, dated June 2, 1927, for 300 acre feet of irrigation water, totalling a sum of $1170.00.
Re-elicitation of the Dug-from-the-Ground story as transcribed by Jeremiah Curtin
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-090814-04: Re-elicitation of a version of the Xa:xowilwa:tł' (Dug-from-the-Ground) story found in Jeremiah Curtin's field notes (National Anthropological Archvies MS 2063), page 1 of 3.
Oeldemann, Johannes: Einheit der Christen - Wunsch oder Wirklichkeit?
Creators: name: Heller, Dagmar
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 59 Nr. 3 (2010): Ökumenische Rundschau, Band 59, Heft 3
Parity-time symmetric systems with memory
Creators: name: Cochran, Zachary A.
name: Saxena, Avadh
name: Joglekar, Yogesh N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Classical open systems with balanced gain and loss, i.e. parity-time ($\mathcal{PT}$) symmetric systems, have attracted tremendous attention over the past decade. Their exotic properties arise from exceptional point (EP) degeneracies of non-Hermitian Hamiltonians that govern their dynamics. In recent years, increasingly sophisticated models of $\mathcal{PT}$-symmetric systems with time-periodic (Floquet) driving, time-periodic gain and loss, and time-delayed coupling have been investigated, and such systems have been realized across numerous platforms comprising optics, acoustics, mechanical oscillators, optomechanics, and electrical circuits. Here, we introduce a $\mathcal{PT}$-symmetric (balanced gain and loss) system with memory, and investigate its dynamics analytically and numerically. Our model consists of two coupled $LC$ oscillators with positive and negative resistance, respectively. We introduce memory by replacing either the resistor with a memristor, or the coupling inductor with a meminductor, and investigate the circuit energy dynamics as characterized by $\mathcal{PT}$-symmetric or $\mathcal{PT}$-symmetry broken phases. Due to the resulting nonlinearity, we find that energy dynamics depend on the sign and strength of initial voltages and currents, as well as the distribution of initial circuit energy across its different components. Surprisingly, at strong inputs, the system exhibits self-organized Floquet dynamics, including $\mathcal{PT}$-symmetry broken phase at vanishingly small dissipation strength. Our results indicate that $\mathcal{PT}$-symmetric systems with memory show a rich landscape.
Wavelet and Curvelet Moments for Image Classification: Application to Aggregate Mixture Grading
Creators: name: Murtagh, Fionn
name: Starck, Jean-Luc
Publisher: name: arXiv
Year: 2008
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We show the potential for classifying images of mixtures of aggregate, based themselves on varying, albeit well-defined, sizes and shapes, in order to provide a far more effective approach compared to the classification of individual sizes and shapes. While a dominant (additive, stationary) Gaussian noise component in image data will ensure that wavelet coefficients are of Gaussian distribution, long tailed distributions (symptomatic, for example, of extreme values) may well hold in practice for wavelet coefficients. Energy (2nd order moment) has often been used for image characterization for image content-based retrieval, and higher order moments may be important also, not least for capturing long tailed distributional behavior. In this work, we assess 2nd, 3rd and 4th order moments of multiresolution transform -- wavelet and curvelet transform -- coefficients as features. As analysis methodology, taking account of image types, multiresolution transforms, and moments of coefficients in the scales or bands, we use correspondence analysis as well as k-nearest neighbors supervised classification.
description: Submitted to Pattern Recognition Letters
Funci{SNP}: integrating functional non-coding data sets with genetic association studies to identify candidate regulatory SNPs biOMICs+: easily integrate public “OMICS” data for functional study
Creators: name: Coetzee, Simon
name: Thais Sabedot
name: Silva, Tiago
name: Coetzee, Gerhard
name: Houtan Noushmehr
Publisher: name: F1000Research
Year: 2015

description: FunciSNP integrates information from GWAS, 1000genomes and chromatin feature to identify functional SNP in coding or non-coding regions.
Identity-processing style and decision making theory: factors to consider when adolescents are deciding upon a career
Creators: name: Chung, Rosamond
Publisher: name: University of British Columbia
Year: 2009

description: While taking a personological approach to decision making theory, this thesis addresses the issue of how adolescents make occupational decisions. Implicit in this thesis is the idea that a personological approach to decision making has theoretical and practical significance when it is conducted through a personality orientation. The personality orientation used to examine adolescent decision making is the social cognitive theory of Berzonsky's identity-processing styles. Based on Berzonsky's identity-processing styles, 63 adolescents were classified as Informational, Normative and Diffuse/ avoidant for assessing the extent compensatory (high demand) and non-compensatory (reduced-demand) processing was used in an occupational choice situation that varied in cognitive complexity. Additional interest was also directed at determining whether the identity-processing styles reflected different intrinsic or extrinsic value preferences in their final choices. All processing data was derived through a computerizedinformation acquisition system called MOUSELAB. As hypothesized, the three identity-processing styles differed significantly in cognitive strategy usage and search behavior. Informational adolescents were seen to use a compensatory additive linear procedure; that is, they searched a large amount of information, in a constant fashion, for an extended period of time. Normative adolescents were seen to use a non-compensatory conjunctive procedure; that is, they searched a smaller amount of information, in a selective fashion, fora shorter period of time. Diffuse/avoidant adolescents were seen to use a non-compensatory elimination-by-aspect procedure; where the amount, selectivity and time of search was similar to the Normative adolescents. In regards to search direction, Informationals and Normatives were seen to assess occupational choices through an alternative-based search pattern whereas; Diffuse/avoidants were seen to lean towards an attribute-based search pattern. These processing results were true only for the high information load condition. Finally, as expected theoretically, value preferences were seen to vary according to an adolescent's identity-processing style. When making an occupational selection, Informational adolescents placed more emphases on intrinsic values (Feeling of Self-fulfilment, Intellectual Stimulation, Autonomy ect) whereas Normative adolescents placed more emphases on extrinsic values (Authority, Prestige, Wage etc). Diffuse/avoidant adolescents oscillated between the two value systems. Implications for decision making theory, applied suggestions for professionals counselling job-seeking adolescents and limitations of the study are discussed.
Magnetic Field Dependence of Dephasing Rate due to Diluted Kondo Impurities
Creators: name: Micklitz, T.
name: Costi, T. A.
name: Rosch, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the dephasing rate, 1/tau_phi, of weakly disordered electrons due to scattering from diluted dynamical impurities. Our previous result for the weak-localization dephasing rate is generalized from diluted Kondo impurities to arbitrary dynamical defects with typical energy transfer larger than 1/tau_phi. For magnetic impurities, we study the influence of magnetic fields on the dephasing of Aharonov-Bohm oscillations and universal conductance fluctuations both analytically and using the numerical renormalization group. These results are compared to recent experiments.
description: 11 pages, 13 figures; version accepted by Phys. Rev. B
Inductive types in the Calculus of Algebraic Constructions
Creators: name: Blanqui, Frédéric
Publisher: name: arXiv
Year: 2006
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: In a previous work, we proved that almost all of the Calculus of Inductive Constructions (CIC), which is the basis of the proof assistant Coq, can be seen as a Calculus of Algebraic Constructions (CAC), an extension of the Calculus of Constructions with functions and predicates defined by higher-order rewrite rules. In this paper, we not only prove that CIC as a whole can be seen as a CAC, but also that it can be extended with non-free constructors, pattern-matching on defined symbols, non-strictly positive types and inductive-recursive types.
Force distribution within a barchan dune
Creators: name: Zambrano, Carlos Azael Alvarez
name: Franklin, Erick de Moraes
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geophysics (physics.geo-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Barchan dunes, or simply barchans, are crescent-shaped dunes found in diverse environments such as the bottom of rivers, Earth's deserts and the surface of Mars. In a recent paper [Phys. Rev. E 101, 012905 (2020)], we investigated the evolution of subaqueous barchans by using computational fluid dynamics - discrete element method (CFD-DEM), and our simulations captured well the evolution of an initial pile toward a barchan dune in both the bedform and grain scales. The numerical method having shown to be adequate, we obtain now the forces acting on each grain, isolate the contact interactions, and investigate how forces are distributed and transmitted in a barchan dune. We present force maps and probability density functions (PDFs) for values in the streamwise and spanwise directions, and show that stronger forces are experienced by grains at neither the crest nor leading edge of the barchan, but in positions just upstream the dune centroid on the periphery of the dune. We show also that a great part of grains undergo longitudinal forces of the order of 10$^{-7}$ N, with negative values around the crest, resulting in decelerations and grain deposition in that region. These data show that the force distribution tends to route a great part of grains toward the crest and horns of subaqueous barchans, being fundamental to comprehend their morphodynamics. However, to the best of the authors' knowledge, they are not accessible from current experiments, making of our results an important step toward understanding the behavior of barchan dunes.
description: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Phys. Fluids 33, 013313 (2021) and may be found at https://doi.org/10.1063/5.0033964
A Search for WIMPs with the First Five-Tower Data from CDMS
Creators: name: CDMS Collaboration
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report first results from the Cryogenic Dark Matter Search (CDMS II) experiment running with its full complement of 30 cryogenic particle detectors at the Soudan Underground Laboratory. This report is based on the analysis of data acquired between October 2006 and July 2007 from 15 Ge detectors (3.75 kg), giving an effective exposure of 121.3 kg-d (averaged over recoil energies 10--100 keV, weighted for a weakly interacting massive particle (WIMP) mass of 60 \gev). A blind analysis, incorporating improved techniques for event reconstruction and data quality monitoring, resulted in zero observed events. This analysis sets an upper limit on the WIMP-nucleon spin-independent cross section of 6.6$\times10^{-44}$ cm$^2$ (4.6$\times10^{-44}$ cm$^2$ when combined with previous CDMS Soudan data) at the 90% confidence level for a WIMP mass of 60 \gev. By providing the best sensitivity for dark matter WIMPs with masses above 42 GeV/c$^2$, this work significantly restricts the parameter space for some of the favored supersymmetric models.
description: 5 pages, 4 figures, submitted to PRL 28 March 2008
Manipulating the exciton fine structure of single CdTe/ZnTe quantum dots by an in-plane magnetic field
Creators: name: Kowalik, K.
name: Krebs, O.
name: Golnik, A.
name: Suffczynski, J.
name: Wojnar, P.
name: Kossut, J.
name: Gaj, J. A.
name: Voisin, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Polarization resolved photoluminescence (PL) spectroscopy of individual CdTe/ZnTe quantum dots is investigated in the presence of external in-plane magnetic field. We find that the excitonic fine structure strongly depends on the magnitude and direction of applied field. The splitting between "bright" and "dark" states increases with the magnetic field, whereas the anisotropic exchange splitting of the bright excitons can be reduced or enhanced, depending on the field direction. Increase (decrease) is observed when the field is applied parallel to the PL polarization direction of the lower (upper) energy exciton. For intermediate fields, we observe a rotation of the PL polarization orientation. The results are discussed in terms of an effective spin Hamiltonian derived for the exciton ground state.
description: 6 pages, 6 figures
Leptopharynx bromeliophilus Omar & Foissner 2011
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Nassophorea
Nassulida
Leptopharynidae
Leptopharynx
Leptopharynx bromeliophilus

description: Leptopharynx bromeliophilus 1 Omar & Foissner, 2011
Distribution. JAMAICA: (Dunthorn et al. 2012), (Vs); near the village of Ecclesdown (Omar & Foissner 2011), (V1). MEXICO: Omar & Foissner 2011, (Th); Coffee plantation La Onza, near Coatepec (Durán-Ramírez et al. 2015), (Th); (Durán-Ramírez et al. 2019), (Tb); Coffee plantation Virginia Armand, near Coatepec (DuránRamírez et al. 2015), (Th); Dos Lagunas, near village of Tzsiscao (ps), (Ch, Tg, Ws); El Tegolome, near the town of Tlanchinol (ps), (Ti); Ixtlán de Juárez, Oaxaca (Durán-Ramírez et al. 2015), (To); La Joya, Acajete (Durán-Ramírez et al. 2019), (Ts); Reserve of the Biosphere Chamela-Cuixmala (Durán-Ramírez & MayénEstrada 2018), (Bk, Bp, Td, Tp, Tr); Santuario del Bosque de Niebla, near Xalapa (Durán-Ramírez et al. 2015), (Th); (Durán-Ramírez et al. 2019), (Tm, Ts); Surroundings of Reserva Azul, near the town of Cuetzalan (ps), (Cs, Th); Village El Cerezal, near Santa Catarina Ixtepeji (ps), (To).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 19, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
Probing the Central Regions of Nearby Compact Elliptical Galaxies
Creators: name: Davidge, T. J.
name: Beck, T. L.
name: McGregor, P. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: K-band spectroscopic observations recorded with NIFS+ALTAIR on Gemini North are used to probe the central arcsec of the compact elliptical galaxies NGC 4486B, NGC 5846A, and M32. The angular resolution of these data is ~0.1 arcsec FWHM. The central stellar contents of NGC 4486B and NGC 5846A are similar, in the sense that they occupy the same regions of the (Ca I, 12CO), (Na I, 12CO) and (13CO, 12CO) diagrams. The NGC 4486B and NGC 5846A observations depart from the sequence defined by solar neighborhood giants in the (Na I, 12CO) diagram, in a sense that is consistent with both galaxies having non-solar chemical mixtures. For comparison, the M32 data is consistent with a chemical enrichment history like that in the Galactic disk; M32 could not have formed from the stripping of a larger elliptical galaxy. The behaviour of the near-infrared line indices as a function of radius is also investigated. The radial gradients that are present in NGC 4486B and NGC 5846A at large radii break down or reverse within the central few tenths of an arcsec. Evidence is presented that the nuclear regions of NGC 4486B and NGC 5846A harbour intermediate age populations.
description: Accepted for publication in the Astrophysical Journal
Rewriting modulo in Deduction modulo
Creators: name: Blanqui, Frédéric
Publisher: name: arXiv
Year: 2006
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: We study the termination of rewriting modulo a set of equations in the Calculus of Algebraic Constructions, an extension of the Calculus of Constructions with functions and predicates defined by higher-order rewrite rules. In a previous work, we defined general syntactic conditions based on the notion of computable closure for ensuring the termination of the combination of rewriting and beta-reduction. Here, we show that this result is preserved when considering rewriting modulo a set of equations if the equivalence classes generated by these equations are finite, the equations are linear and satisfy general syntactic conditions also based on the notion of computable closure. This includes equations like associativity and commutativity, and provides an original treatment of termination modulo equations.
Quantifying the Role of the Surfactant and the Thermophoretic Force in Plasmonic Nano-Optical Trapping
Creators: name: Jiang, Quanbo
name: Rogez, Benoît
name: Claude, Jean-Benoît
name: Baffou, Guillaume
name: Wenger, Jérôme
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Plasmonic nano-tweezers use intense electric field gradients to generate optical forces able to trap nano-objects in liquids. However, part of the incident light is absorbed into the metal, and a supplementary thermophoretic force acting on the nano-object arises from the resulting temperature gradient. Plasmonic nano-tweezers thus face the challenge of disentangling the intricate contributions of the optical and thermophoretic forces. Here, we show that commonly added surfactants can unexpectedly impact the trap performance by acting on the thermophilic or thermophobic response of the nano-object. Using different surfactants in double nanohole plasmonic trapping experiments, we measure and compare the contributions of the thermophoretic and the optical forces, evidencing a trap stiffness 20x higher using sodium dodecyl sulfate (SDS) as compared to Triton X-100. This work uncovers an important mechanism in plasmonic nano-tweezers and provides guidelines to control and optimize the trap performance for different plasmonic designs.
Biological activity in the wake of an island close to a coastal upwelling
Creators: name: Sandulescu, M.
name: Lopez, C.
name: Hernandez-Garcia, E.
name: Feudel, U.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Hydrodynamic forcing plays an important role in shaping the dynamics of marine organisms, in particular of plankton. In this work we study the planktonic biological activity in the wake of an island which is close to an upwelling region. Our research is based on numerical analysis of a kinematic flow mimicking the hydrodynamics in the wake, coupled to a three-component plankton model. Depending on model parameters different phenomena are described: a) The lack of transport of nutrients and plankton across the wake, so that the influence of upwelling on primary production on the other side of the wake is blocked. b) For sufficiently high vorticity, the role of the wake in facilitating this transport and leading to an enhancement of primary production. Finally c) we show that under certain conditions the interplay between wake structures and biological growth leads to plankton blooms inside mesoscale hydrodynamic vortices that act as incubators of primary production.
description: 42 pages, 9 figures
Küster, Volker: "Gott/Terror - ein Diptychon"
Creators: name: Beuker, Joane
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 59 Nr. 3 (2010): Ökumenische Rundschau, Band 59, Heft 3
Understanding and formalization of the fretting-wear behavior of a cobalt-based alloy at high temperature
Creators: name: Dreano, Alixe
name: Fouvry, Siegfried
name: Guillonneau, Gaylord
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The purpose of this study is to investigate the mechanisms involved in the wear of cobalt-based interfaces at high temperature. The studied contact is a cobalt-based alloy subjected to fretting against an alumina sample. At high temperature, a protective third body is spontaneously created at the interface and presents excellent tribological properties. The formation of the so-called ''glaze layer'' leads to an absence of wear. The investigation presents on complete description of the hightemperature tribolayer with microstructural, chemical and mechanical characterizations. The glaze layer regime is mainly related to a threshold temperature above which a thin cobalt-rich layer is formed by a tribo-sintering process. A formalization of the tribo-sintering process is proposed to predict the necessary number of fretting cycles N GL to form the glaze layer. The tribo-sintering process prevents wear debris ejection by continuously re-incorporating the wear debris particles in the glaze layer. The re-incorporation of the wear debris may be the reason for the absence of wear of the fretted interface from a macroscopic point of view. Finally, the paper presents an extended friction energy wear approach taking into account tribo-oxidation and tribo-sintering considerations. The formulation is able to predict wear for a large range of tribological parameters (temperature, frequency, sliding amplitude, number of cycles), when applied to the Co-based/alumina contact.
Anisotropic Compact Stellar Objects in Modified Gauss-Bonnet Gravity
Creators: name: Sharif, M.
name: Ramzan, Amna
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper is devoted to studying anisotropic compact stellar structures by adopting embedding class-1 technique in the background of modified Gauss-Bonnet gravity. The unknown constants are evaluated by the matching of interior spacetime with the Schwarzschild exterior geometry corresponding to $f(\mathcal{G})=χ\mathcal{G}^{n}$ model, where $χ$ and $n$ are positive constants. The observed masses of compact star candidates (SAX J1808.4-3658, Vela X-1, PSR J0348+0432, 4U 1608-52) are used with the condition of vanishing radial pressure at the stellar surface to predict their radii. We have examined viability and stability of the resulting solution through graphical behavior of matter variables, energy constraints, adiabatic index and causality condition. It is found that embedding class-1 solution for anisotropic compact stars is viable and stable in this theory.
description: 26 pages, 15 figures, to appear in PDU
A crucial test of the phantom closed cosmological model
Creators: name: Shirokov, S. I.
name: Baryshev, Yu. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: 85-05

description: We suggest a crucial direct-observational test for measuring distinction between the standard $Λ$CDM model and recently proposed phantom dark energy positive curvature cosmological model. The test is based on the fundamental distance--flux--redshift relation for general Friedmann models. It does not depend on the CMBR data, on the large-scale structure growth models, and also on the value of the Hubble constant $H_0$. Our crucial test can be performed by future gamma-ray burst observations with THESEUS space mission and by using gravitational-wave standard siren observations with modern advanced LIGO--Virgo and also forthcoming LISA detectors.
description: 4 pages, 1 figure, MNRAS accepted 18.09.2020
Unresolved X-ray background: clues on galactic nuclear activity at z>6
Creators: name: Salvaterra, R.
name: Haardt, F.
name: Volonteri, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study, by means of dedicated simulations of massive black hole build-up, the possibility to constraint the existence and nature of the AGN population at z>6 with available and planned X-ray and near infrared space telescopes. We find that X-ray deep-field observations can set important constraints to the faint-end of the AGN luminosity function at very high redshift. Planned X-ray telescopes should be able to detect AGN hosting black holes with masses down to >10^5 Msun (i.e., X-ray luminosities in excess of 10^42 erg s^-1), and can constrain the evolution of the population of massive black hole at early times (66 and we discuss the possible role of AGN in the reionization of the Universe at these early epochs, showing that AGN alone can provide enough ionizing photons only in the (improbable) case of an almost completely homogeneous inter-galactic medium. Finally, we show that super-Eddington accretion, suggested by the observed QSOs at z>6, must be a very rare event, confined to black holes living in the highest density peaks.
description: 9 pages, 7 figures, MNRAS in press
Paths of fluctuation induced switching
Creators: name: Chan, H. B.
name: Dykman, M. I.
name: Stambaugh, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate that the paths followed by a system in fluctuation-activated switching form a narrow tube in phase space. A theory of the path distribution is developed and its direct measurement is performed in a micromechanical oscillator. The experimental and theoretical results are in excellent agreement, with no adjustable parameters. We also demonstrate the lack of time-reversal symmetry in switching of systems far from thermal equilibrium.
description: Accepted to Phys. Rev. Lett
Rough translation of file 025_A (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-090814-03: Rough translation (minute-by-minute) of file 025_A (tape 025, side A) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from the beginning of the file to 25:03; no transcription in this session, translation only. Due to re-numbering, tape 025_A has been assigned to the CLA item number LA256.025, audio file LA256.025A.
Quantum Mechanics and the Generalized Uncertainty Principle
Creators: name: Bang, Jang Young
name: Berger, Micheal S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The generalized uncertainty principle has been described as a general consequence of incorporating a minimal length from a theory of quantum gravity. We consider a simple quantum mechanical model where the operator corresponding to position has discrete eigenvalues and show how the generalized uncertainty principle results for minimum uncertainty wave packets.
description: 8 pages, 3 figures (added references)
Modern Techniques for Ancient Games
Creators: name: Browne, Cameron
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Games potentially provide a wealth of knowledge about our shared cultural past and the development of human civilisation, but our understanding of early games is incomplete and often based on unreliable reconstructions. This paper describes the Digital Ludeme Project, a five-year research project currently underway that aims to address such issues using modern computational techniques.
Three-mode opto-acoustic parametric interactions with coupled cavity
Creators: name: Miao, H.
name: Zhao, C.
name: Ju, L.
name: Gras, S.
name: Barriga, P.
name: Zhang, Z.
name: Blair, D. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We theoretically analyze three-mode opto-acoustic parametric interactions in a coupled Fabry-Perot cavity, where one acoustic mode interacts with two optical modes. We show explicitly that extra degrees of freedom in a coupled cavity allow explorations of both parametric instability and cooling regimes with high parametric gain in a single table top experiment. This work can motivate experimental realizations of the three-mode parametric instability which might be an issue in next-generation gravitational-wave detectors with high optical-power cavities, helping in the development of better models, and in developing techniques for controls. In addition, we show that the same scheme can be implemented in the resolved-sideband acoustic-mode cooling.
description: 15 pages, 7 figures
White noise jammer mathematical modelling and simulation
Creators: name: Kostis, Theodoros
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Applied Physics (physics.app-ph)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: The radar equation is the fundamental mathematical modelling of the basic function of a radar system. Moreover there are many versions of the radar equation that correspond to particular radar operations, like a low PRF, a high PRF or a surveillance mode. In many cases all these expressions of the radar equation exist in their combined forms giving little information to the actual physics and signal geometry between the radar and target involved in the process. In this case study we divide the radar equation into its major steps and present a descriptive mathematical modelling of the radar and other related equations utilizing the free space loss and the target gain concepts for simulating the effect of a white noise jammer to an adversary radar. We believe that this work will be particularly beneficial to instructors of radar courses and to radar simulation engineers because of its analytical block approach of the main equations related to radar and electronic warfare fields. Finally this work falls under the field of predictive dynamics for radar systems using mathematical modelling techniques.
description: ACCEPTED VERSION https://journals.sagepub.com/doi/full/10.1177/1548512920962224 The Journal of Defense Modeling & Simulation DOI: 10.1177/1548512920962224 First Published October 8, 2020
Approximate Capacity of Gaussian Relay Networks
Creators: name: Avestimehr, Amir Salman
name: Diggavi, Suhas N.
name: Tse, David N C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We present an achievable rate for general Gaussian relay networks. We show that the achievable rate is within a constant number of bits from the information-theoretic cut-set upper bound on the capacity of these networks. This constant depends on the topology of the network, but not the values of the channel gains. Therefore, we uniformly characterize the capacity of Gaussian relay networks within a constant number of bits, for all channel parameters.
description: This paper is submited to 2008 IEEE International Symposium on Information Theory (ISIT 2008) -In the revised format the approximation gap (\kappa) is sharpened
Dispersion and Filtering Properties of Rectangular Waveguides Loaded With Holey Structures
Creators: name: Palomares-Caballero, Ángel
name: Alex-Amor, Antonio
name: Padilla, Pablo
name: Valenzuela-Valdés, Juan F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Signal Processing (eess.SP)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper analyzes thoroughly the dispersion and filtering features of periodic holey waveguides in the millimeter-wave frequency range. Two structures are mainly studied depending on the glide and mirror symmetries of the holes. A parametric study of the dispersion characteristics of their unit cells is carried out. Glide-symmetric holey waveguides provide a higher propagation constant and a low dispersion over a wide frequency range regarding hollow waveguides. This property is particularly useful for the design of low-loss and low-dispersive phase shifters. We also demonstrate that glide-symmetric holey waveguides are less dispersive than waveguides loaded with glide-symmetric pins. Furthermore, we perform a Bloch analysis to compute the attenuation constants in holey waveguides with mirror and broken glide symmetries. Both configurations are demonstrated to be suitable for filter design. Finally, the simulation results are validated with two prototypes in gap-waveguide technology. The first one is a 180$^{o}$ phase shifter based on a glide-symmetric holey configuration that achieves a flat phase shift response over a wide frequency range (27.5\% frequency bandwidth). The second one is a filter based on a mirror-symmetric holey structure with 20-dB rejection from 63 GHz to 75 GHz.
Soft SUSY Breaking Terms for Chiral Matter in IIB String Compactifications
Creators: name: Conlon, Joseph P.
name: Abdussalam, Shehu S.
name: Quevedo, Fernando
name: Suruliz, Kerim
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper develops the computation of soft supersymmetry breaking terms for chiral D7 matter fields in IIB Calabi-Yau flux compactifications with stabilised moduli. We determine explicit expressions for soft terms for the single-modulus KKLT scenario and the multiple-moduli large volume scenario. In particular we use the chiral matter metrics for Calabi-Yau backgrounds recently computed in hep-th/0609180. These differ from the better understood metrics for non-chiral matter and therefore give a different structure of soft terms. The soft terms take a simple form depending explicitly on the modular weights of the corresponding matter fields. For the large-volume case we find that in the simplest D7 brane configuration, scalar masses, gaugino masses and A-terms are very similar to the dilaton-dominated scenario. Although all soft masses are suppressed by ln(M_P/m_{3/2}) compared to the gravitino mass, the anomaly-mediated contributions do not compete, being doubly suppressed and thus subdominant to the gravity-mediated tree-level terms. Soft terms are flavour-universal to leading order in an expansion in inverse Kahler moduli. They also do not introduce extra CP violating phases to the effective action. We argue that soft term flavour universality should be a property of the large-volume compactifications, and more generally IIB flux models, in which flavour is determined by the complex structure moduli while supersymmetry is broken by the Kahler moduli. For the simplest large-volume case we run the soft terms to low energies and present some sample spectra and a basic phenomenological analysis.
description: 40 pages, 9 figures, JHEP style; v2. sentence rephrased