cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fishes of Texas project: compilation, normalization and quality control of museum data
Creators: name: Hendrickson, Dean
name: Cohen, Adam E.
name: Labay, Ben
Publisher: name: F1000Research
Year: 2015

description: The Fishes of Texas Project (www.fishesoftexas.org) compiled Texas fish species occurrence records from 42 museum collections and applied rigorous quality control and data normalization/standardization to result in 124,415 specimen-based records collected between 1851 and 2010 by 5,924 collectors. 88,348 records from 7,868 unique Texas inland localities were manually georeferenced with placement error estimates. 8,460 Gulf of Mexico records and 18,923 inland records from neighboring Mexican and U.S. states have been partially processed. Georeferenced records were plotted and 4,107 geographic outliers flagged as potential identification or location errors. Most flagged specimens, and often related original documentation, have now been examined and identifications corrected or confirmed. The value of such specimen-based vouchering of collections and compiling and normalizing large data sets was quickly demonstrated by discovery of 31 species occurrences in major river basins where they were previously not believed to occur. The online database can be queried in diverse ways, mapped, and records downloaded. Also online are a large set of high quality fish images, original field notes, specimen photos, detailed species distribution models based on the data, accounts of species' biology and ecology, video time-lapse distribution maps, and digital identification keys.
Electron heat flux in the near-Sun environment
Creators: name: Halekas, J. S.
name: Whittlesey, P. L.
name: Larson, D. E.
name: McGinnis, D.
name: Bale, S. D.
name: Berthomier, M.
name: Case, A. W.
name: Chandran, B. D. G.
name: Kasper, J. C.
name: Klein, K. G.
name: Korreck, K. E.
name: Livi, R.
name: MacDowall, R. J.
name: Maksimovic, M.
name: Malaspina, D. M.
name: Matteini, L.
name: Pulupa, M. P.
name: Stevens, M. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We survey the electron heat flux observed by the Parker Solar Probe (PSP) in the near-Sun environment at heliocentric distances of 0.125-0.25 AU. We utilized measurements from the Solar Wind Electrons Alphas and Protons and FIELDS experiments to compute the solar wind electron heat flux and its components and to place these in context. The PSP observations reveal a number of trends in the electron heat flux signatures near the Sun. The magnitude of the heat flux is anticorrelated with solar wind speed, likely as a result of the lower saturation heat flux in the higher-speed wind. When divided by the saturation heat flux, the resulting normalized net heat flux is anticorrelated with plasma beta on all PSP orbits, which is consistent with the operation of collisionless heat flux regulation mechanisms. The net heat flux also decreases in very high beta regions in the vicinity of the heliospheric current sheet, but in most cases of this type the omnidirectional suprathermal electron flux remains at a comparable level or even increases, seemingly inconsistent with disconnection from the Sun. The measured heat flux values appear inconsistent with regulation primarily by collisional mechanisms near the Sun. Instead, the observed heat flux dependence on plasma beta and the distribution of suprathermal electron parameters are both consistent with theoretical instability thresholds associated with oblique whistler and magnetosonic modes.
Topological Field Theory of Time-Reversal Invariant Insulators
Creators: name: Qi, Xiao-Liang
name: Hughes, Taylor
name: Zhang, Shou-Cheng
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the fundamental time reversal invariant (TRI) insulator exists in 4+1 dimensions, where the effective field theory is described by the 4+1 dimensional Chern-Simons theory and the topological properties of the electronic structure is classified by the second Chern number. These topological properties are the natural generalizations of the time reversal breaking (TRB) quantum Hall insulator in 2+1 dimensions. The TRI quantum spin Hall insulator in 2+1 dimensions and the topological insulator in 3+1 dimension can be obtained as descendants from the fundamental TRI insulator in 4+1 dimensions through a dimensional reduction procedure. The effective topological field theory, and the $Z_2$ topological classification for the TRI insulators in 2+1 and 3+1 dimensions are naturally obtained from this procedure. All physically measurable topological response functions of the TRI insulators are completely described by the effective topological field theory. Our effective topological field theory predicts a number of novel and measurable phenomena, the most striking of which is the topological magneto-electric effect, where an electric field generates a magnetic field in the same direction, with an universal constant of proportionality quantized in odd multiples of the fine structure constant $α=e^2/\hbar c$. Finally, we present a general classification of all topological insulators in various dimensions, and describe them in terms of a unified topological Chern-Simons field theory in phase space.
description: 47 pages, 21 figures. Submitted to PRB. For high resolution figures please see final published version
Influence of spin and orbital fluctuations on Mott-Hubbard exciton dynamics in LaVO${}_{3}$ Thin Films
Creators: name: Lovinger, D. J.
name: Brahlek, M.
name: Kissin, P.
name: Kennes, D. M.
name: Millis, A. J.
name: Engel-Herbert, R.
name: Averitt, R. D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent optical conductivity measurements reveal the presence of Hubbard excitons in certain Mott insulators. In light of these results, it is important to revisit the dynamics of these materials to account for excitonic correlations. We investigate time-resolved excitation and relaxation dynamics as a function of temperature in perovskite-type LaVO${}_{3}$ thin films using ultrafast optical pump-probe spectroscopy. LaVO${}_{3}$ undergoes a series of phase transitions at roughly the same critical temperature $T_C\cong 140\ K$, including a second-order magnetic phase transition (PM $\xrightarrow{}$ AFM) and a first-order structural phase transition, accompanied by \textit{C}-type spin order (SO) and \textit{G}-type orbital order (OO). Ultrafast optical pump-probe spectroscopy at 1.6 eV monitors changes in the spectral weight of the Hubbard exciton resonance which serves as a sensitive reporter of spin and orbital fluctuation dynamics. We observe dramatic slowing down of the spin, and orbital dynamics in the vicinity of $T_C\cong 140$ K, reminiscent of a second-order phase transition, despite the (weakly) first-order nature of the transition. We emphasize that since it is spectral weight changes that are probed, the measured dynamics are not reflective of conventional exciton generation and recombination, but are related to the dynamics of Hubbard exciton formation in the presence of a fluctuating many-body environment.
Improved Measurement of the Branching Fraction and Energy Spectrum of eta' from Upsilon(1S) Decays
Creators: name: Aquines, O.
name: Collaboration, CLEO
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present an improved measurement of the $η'$ meson energy spectrum in $Υ(1S)$ decays, using 1.2 fb^{-1} of data taken at the $Υ(1S)$ center-of-mass energy with the CLEO III detector. We compare our results with models of the $η'$ gluonic form factor that have been suggested to explain the unexpectedly large $B\to η'X_s$ rate. Models based on perturbative QCD fail to fit the data for large $η'$ energies, and thus an explanation outside the realm of the Standard Model or an improved understanding of non-perturbative QCD effects may be needed to account for this large rate.
description: 17 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2006/
Rough translation of file 024_B (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-090814-02: Rough translation (minute-by-minute) of file 024_B (tape 024, side B) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from 35:02 to the end of the file; no transcription in this session, translation only. Due to re-numbering, tape 024_B has been assigned to the CLA item number LA256.024, audio file LA256.024B.
Effects of substratum surface chemistry and topography on extracellular matrix gene expression
Creators: name: Chou, Laisheng
Publisher: name: University of British Columbia
Year: 2009

description: The reactions at tissue-implant interfaces are key elements in the study of dental implantology. Most previous studies have been limited to assessment of the interface at the morphological and histological levels. The mechanisms underlying the tissue-implant interface reaction are largely unknown. In this thesis I hypothesized that the surface chemistry and microtopography of biomaterials could serve as signals to the attached cells and effectively regulate the interface reaction at the molecular level. I predicted that expression of genes coding for specific molecules involved in cell attachment and matrix assembly could be altered in vitro by substratum surface chemistry and topography. If the hypothesis and prediction were accurate, the results from this thesis would support the development of biomaterial-controlled interface reactions by modifying the signals of surface chemistry and topography. The hypothesis and prediction were tested in this thesis by examining the mRNA level, mRNA stability, gene product secretion and activity of two major extracellular proteins, fibronectin and 72 kDa gelatinase (MMP-2), in human gingival fibroblasts cultured on smooth or micromachined grooved titanium substrata to determine the effects of surface topography. Tissue culture plastic substrata were compared with smooth titanium substrata to determine the effects of surface chemistry. The study revealed that a grooved substratum surface significantly altered the shape and orientation of normal fibroblasts. Fibronectin mRNA levels, mRNA stability, amounts of secreted proteins and matrix-assembly activity were significantly increased in the cells on grooved titanium surfaces in comparison to the cells on smooth titanium surfaces. Compared to cells on smooth tissue culture plastic, the cells on smooth titanium surfaces showed altered levels of fibronectin mRNA, secretion and matrix-assembly activity, as well as reduced mRNA stability. The substratum surface topography and chemistry also altered the MMP-2 mRNA levels and stability. Cell proliferation and total secreted protein levels were essentially unchanged in the cells cultured on the different types of surfaces studied. These results indicated that the effects of surface topography and chemistry can sensitively and selectively regulate specific molecules at several levels. Thus, the techniques of molecular biology provide a sensitive and specific approach to the assessment of cell response to biomaterials.
Flux variability from ejectas in structured relativistic jets with large-scale magnetic fields
Creators: name: de Clairfontaine, Gaëtan Fichet
name: Meliani, Zakaria
name: Zech, Andreas
name: Hervet, Olivier
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Using the relativistic MHD code MPI-AMRVAC and a radiative transfer code in post-processing, we explore the influence of the magnetic-field configuration and transverse stratification of an over-pressured jet on its morphology, on the moving shock dynamics, and on the emitted radio light curve. First, we investigate different large-scale magnetic fields with their effects on the standing shocks and on the stratified jet morphology. Secondly, we study the interaction of a moving shock wave with the standing shocks. We calculate the synthetic synchrotron maps and radio light curves and analyse the variability at two frequencies 1 and 15.3 GHz and for several observation angles. Finally, we compare the characteristics of our simulated light curves with radio flares observed from the blazar 3C 273 with OVRO and VLBA in the MOJAVE survey between 2008 and 2019. We find that, in a structured, over-pressured relativistic jet, the presence of the large-scale magnetic field structure changes the properties of the standing shock waves and leads to an opening of the jet. When crossing such standing shocks, moving shock waves accompanying overdensities injected in the base of the jet are causing very luminous radio flares. The observation of the temporal structure of these flares under different viewing angles probes the jet at different optical depths. At 1 GHz and for small angles, the self-absorption caused by the moving shock wave becomes more important and leads to a drop in the observed flux after it interacts with the brightest standing knot. A weak asymmetry is seen in the shape of the simulated flares, resulting from the remnant emission of the shocked standing shocks. The characteristics of the simulated flares and the correlation of peaks in the light curve with the crossing of moving and standing shocks favor this scenario as an explanation of the observed radio flares of 3C 273.
description: 19 pages, 14 figures
Decoherence-free preparation of Dicke states of trapped ions by collective stimulated Raman adiabatic passage
Creators: name: Linington, I. E.
name: Vitanov, N. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a simple technique for the generation of arbitrary-sized Dicke states in a chain of trapped ions. The method uses global addressing of the entire chain by two pairs of delayed but partially overlapping laser pulses to engineer a collective adiabatic passage along a multi-ion dark state. Our technique, which is a many-particle generalization of stimulated Raman adiabatic passage (STIRAP), is decoherence-free with respect to spontaneous emission and robust against moderate fluctuations in the experimental parameters. Furthermore, because the process is very rapid, the effects of heating are almost negligible under realistic experimental conditions. We predict that the overall fidelity of synthesis of a Dicke state involving ten ions sharing two excitations should approach 98% with currently achievable experimental parameters.
description: 14 pages, 8 figures
Survey of explainable machine learning with visual and granular methods beyond quasi-explanations
Creators: name: Kovalerchuk, Boris
name: Ahmad, Muhammad Aurangzeb
name: Teredesai, Ankur
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper surveys visual methods of explainability of Machine Learning (ML) with focus on moving from quasi-explanations that dominate in ML to domain-specific explanation supported by granular visuals. ML interpretation is fundamentally a human activity and visual methods are more readily interpretable. While efficient visual representations of high-dimensional data exist, the loss of interpretable information, occlusion, and clutter continue to be a challenge, which lead to quasi-explanations. We start with the motivation and the different definitions of explainability. The paper focuses on a clear distinction between quasi-explanations and domain specific explanations, and between explainable and an actually explained ML model that are critically important for the explainability domain. We discuss foundations of interpretability, overview visual interpretability and present several types of methods to visualize the ML models. Next, we present methods of visual discovery of ML models, with the focus on interpretable models, based on the recently introduced concept of General Line Coordinates (GLC). These methods take the critical step of creating visual explanations that are not merely quasi-explanations but are also domain specific visual explanations while these methods themselves are domain-agnostic. The paper includes results on theoretical limits to preserve n-D distances in lower dimensions, based on the Johnson-Lindenstrauss lemma, point-to-point and point-to-graph GLC approaches, and real-world case studies. The paper also covers traditional visual methods for understanding ML models, which include deep learning and time series models. We show that many of these methods are quasi-explanations and need further enhancement to become domain specific explanations. We conclude with outlining open problems and current research frontiers.
description: 45 pages, 34 figures
Excited $[{\bf 70},\ell^+]$ baryon resonances in large $N_c$ QCD
Creators: name: Matagne, N.
name: Stancu, Fl.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We summarize results obtained in the $1/N_c$ expansion method for the masses of baryon resonances belonging to the $[{\bf 70},\ell^+]$ multiplet. They represent an extension of our previous studies from two to three flavors. A better approach to mixed symmetric states of any angular momentum and parity is also outlined.
description: 4 pages, 1 figure, uses espcrc2.sty (included), based on a talk given by N. Matagne at the 13th International QCD Conference, QCD06, Montpellier, France, 3-7th July 2006
Reflectionless Sharp Bends and Corners in Waveguides Using Epsilon-Near-Zero Effects
Creators: name: Edwards, Brian
name: Alu, Andrea
name: Silveirinha, Mario G.
name: Engheta, Nader
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Following our recent theoretical and experimental results that show how zero-permittivity metamaterials may provide anomalous tunneling and energy squeezing through ultranarrow waveguide channels, here we report an experimental investigation of the bending features relative to this counterintuitive resonant effect. We generate the required effectively-zero permittivity using a waveguide operating at the cut-off of its dominant mode, and we show how sharp and narrow bends may be inserted within the propagation channel without causing any sensible reflection or loss.
description: 13 pages, 6 figures
Direct Measurement of the Cosmic-Ray Carbon and Oxygen Spectra from 10 GeV$/n$ to 2.2 TeV$/n$ with the Calorimetric Electron Telescope on the International Space Station
Creators: name: Adriani, O.
name: Akaike, Y.
name: Asano, K.
name: Asaoka, Y.
name: Bagliesi, M. G.
name: Berti, E.
name: Bigongiari, G.
name: Binns, W. R.
name: Bongi, M.
name: Brogi, P.
name: Bruno, A.
name: Buckley, J. H.
name: Cannady, N.
name: Castellini, G.
name: Checchia, C.
name: Cherry, M. L.
name: Collazuol, G.
name: Ebisawa, K.
name: Fuke, H.
name: Gonzi, S.
name: Guzik, T. G.
name: Hams, T.
name: Hibino, K.
name: Ichimura, M.
name: Ioka, K.
name: Ishizaki, W.
name: Israel, M. H.
name: Kasahara, K.
name: Kataoka, J.
name: Kataoka, R.
name: Katayose, Y.
name: Kato, C.
name: Kawanaka, N.
name: Kawakubo, Y.
name: Kobayashi, K.
name: Kohri, K.
name: Krawczynski, H. S.
name: Krizmanic, J. F.
name: Link, J.
name: Maestro, P.
name: Marrocchesi, P. S.
name: Messineo, A. M.
name: Mitchell, J. W.
name: Miyake, S.
name: Moiseev, A. A.
name: Mori, M.
name: Mori, N.
name: Motz, H. M.
name: Munakata, K.
name: Nakahira, S.
name: Nishimura, J.
name: de Nolfo, G. A.
name: Okuno, S.
name: Ormes, J. F.
name: Ospina, N.
name: Ozawa, S.
name: Pacini, L.
name: Palma, F.
name: Papini, P.
name: Rauch, B. F.
name: Ricciarini, S. B.
name: Sakai, K.
name: Sakamoto, T.
name: Sasaki, M.
name: Shimizu, Y.
name: Shiomi, A.
name: Sparvoli, R.
name: Spillantini, P.
name: Stolzi, F.
name: Sugita, S.
name: Suh, J. E.
name: Sulaj, A.
name: Takita, M.
name: Tamura, T.
name: Terasawa, T.
name: Torii, S.
name: Tsunesada, Y.
name: Uchihori, Y.
name: Vannuccini, E.
name: Wefel, J. P.
name: Yamaoka, K.
name: Yanagita, S.
name: Yoshida, A.
name: Yoshida, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this paper, we present the measurement of the energy spectra of carbon and oxygen in cosmic rays based on observations with the Calorimetric Electron Telescope (CALET) on the International Space Station from October 2015 to October 2019. Analysis, including the detailed assessment of systematic uncertainties, and results are reported. The energy spectra are measured in kinetic energy per nucleon from 10 GeV$/n$ to 2.2 TeV$/n$ with an all-calorimetric instrument with a total thickness corresponding to 1.3 nuclear interaction length. The observed carbon and oxygen fluxes show a spectral index change of $\sim$0.15 around 200 GeV$/n$ established with a significance $>3σ$. They have the same energy dependence with a constant C/O flux ratio $0.911\pm 0.006$ above 25 GeV$/n$. The spectral hardening is consistent with that measured by AMS-02, but the absolute normalization of the flux is about 27% lower, though in agreement with observations from previous experiments including the PAMELA spectrometer and the calorimetric balloon-borne experiment CREAM.
description: main text: 7 pages, 3 figures; supplemental material: 20 pages, 15 figures, 3 tables
Operation of a high purity germanium crystal in liquid argon as a Compton suppressed radiation spectrometer
Creators: name: Orrell, John L.
name: Aalseth, Craig E.
name: Amsbaugh, John F.
name: Doe, Peter J.
name: Hossbach, Todd W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A high purity germanium crystal was operated in liquid argon as a Compton suppressed radiation spectrometer. Spectroscopic quality resolution of less than 1% of the full-width half maximum of full energy deposition peaks was demonstrated. The construction of the small apparatus used to obtain these results is reported. The design concept is to use the liquid argon bath to both cool the germanium crystal to operating temperatures and act as a scintillating veto. The scintillation light from the liquid argon can veto cosmic-rays, external primordial radiation, and gamma radiation that does not fully deposit within the germanium crystal. This technique was investigated for its potential impact on ultra-low background gamma-ray spectroscopy. This work is based on a concept initially developed for future germanium-based neutrinoless double-beta decay experiments.
description: Paper presented at the SORMA XI Conference, Ann Arbor, MI, May 2006
Origin of isolated olivine grains in carbonaceous chondrites
Creators: name: Jacquet, Emmanuel
name: Piralla, Maxime
name: Kersaho, Pauline
name: Marrocchi, Yves
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report microscopic, cathodoluminescence, chemical and O isotopic measurements of FeO-poor isolated olivine grains (IOG) in the carbonaceous chondrites Allende (CV3), Northwest Africa 5958 (C2-ung), Northwest Africa 11086 (CM2-an), Allan Hills 77307 (CO3.0). The general petrographic, chemical and isotopic similarity with bona fide type I chondrules confirms that the IOG derived from them. The concentric CL zoning, reflecting a decrease in refractory elements toward the margins, and frequent rimming by enstatite are taken as evidence of interaction of the IOG with the gas as stand-alone objects. This indicates that they were splashed out of chondrules when these were still partially molten. CaO-rich refractory forsterites, which are restricted to $Δ^{17}O < -4\permil$ likely escaped equilibration at lower temperatures because of their large size and possibly quicker quenching. The IOG thus bear witness to frequent collisions in the chondrule-forming regions.
description: 43 pages, 12 figures, accepted to Meteoritics and Planetary Science
Leptopharynx costatus Mermod 1914
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 costatus

description: Leptopharynx costatus Mermod, 1914
Distribution. BRAZIL: Paraná River between the Nupelia’s Field Station and the district of Porto São José, São Pedro do Paraná (Buosi et al. 2014 b, 2015), (Ad); (Foissner et al. 2003). DOMINICAN REPUBLIC: (Foissner et al. 2003). ECUADOR: (Foissner et al. 2003). MEXICO: (Foissner et al. 2011), (Th); Coffee plantation La Onza, near Coatepec (Durán-Ramírez et al. 2015), (Th); Coffee plantation Virginia Armand, near Coatepec (Durán-Ramírez et al. 2015), (Th); Dos Lagunas, near village of Tzsiscao (ps), (Tg); El Tegolome, near the town of Tlanchinol (ps), (Ti); Ixtlán de Juárez, Oaxaca (Durán-Ramírez et al. 2015), (To); Reserve of the Biosphere Chamela-Cuixmala (Durán-Ramírez & Mayén-Estrada 2018), (Bk, Td, Tr); Santuario del Bosque de Niebla, near Xalapa (Durán-Ramírez et al. 2015), (Th); (ps), (Cs, Pv, Te, Tm); surroundings of Reserva Azul, near the town of Cuetzalan (ps), (Cs, Th); Village El Cerezal, near Santa Catarina Ixtepeji (ps), (To); VEN-EZUELA: South margin of the Henri Pittier National Park, Biological Station Rancho Grande (Foissner 2016); North border of the Henri Pittier National Park, surroundings of the village of Choroni (Foissner 2016), (Ts).
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
Prediction of neutron electromagnetic form factors behaviors just by the proton electromagnetic form factors data
Creators: name: Dubničková, Anna Z.
name: Dubnička, Stanislav
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is demonstrated how the neutron electromagnetic form factors behaviors in the whole region of their definition can be predicted theoretically just by using the proton form factors data to be described by the advanced proton electromagnetic structure Unitary and Analytic model.
description: 12 pages,8 figures
Magneto-Elastic Coupling to Coherent Acoustic Phonon Modes in Ferrimagnetic Insulator GdTiO$_3$
Creators: name: Lovinger, D. J.
name: Zoghlin, E.
name: Kissin, P.
name: Ahn, G.
name: Ahadi, K.
name: Kim, P.
name: Poore, M.
name: Stemmer, S.
name: Moon, S. J.
name: Wilson, S. D.
name: Averitt, R. D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this work we investigate single crystal GdTiO$_{3}$, a promising candidate material for Floquet engineering and magnetic control, using ultrafast optical pump-probe reflectivity and magneto-optical Kerr spectroscopy. GdTiO${}_{3}$ is a Mott-Hubbard insulator with a ferrimagnetic and orbitally ordered ground state (\textit{T${}_{C}$} = 32 K). We observe multiple signatures of the magnetic phase transition in the photoinduced reflectivity signal, in response to above band-gap 660 nm excitation. Magnetic dynamics measured via Kerr spectroscopy reveal optical perturbation of the ferrimagnetic order on spin-lattice coupling timescales, highlighting the competition between the Gd${}^{3+}$ and Ti${}^{3+}$ magnetic sub-lattices. Furthermore, a strong coherent oscillation is present in the reflection and Kerr dynamics, attributable to an acoustic strain wave launched by the pump pulse. The amplitude of this acoustic mode is highly dependent on the magnetic order of the system, growing sharply in magnitude at \textit{T${}_{C}$}, indicative of strong magneto-elastic coupling. The driving mechanism, involving strain-induced modification of the magnetic exchange interaction, implies an indirect method of coupling light to the magnetic degrees of freedom and emphasizes the potential of GdTiO${}_{3}$ as a tunable quantum material.
Österreichische Bibelgesellschaft: Die Bibel in kurzen Erzählungen - für den orthodoxen Religionsunterricht
Creators: name: Voigt, Karl Heinz
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 59 Nr. 3 (2010): Ökumenische Rundschau, Band 59, Heft 3
The Intermediate Polar EI UMa: A Pre-Polar Cataclysmic Variable
Creators: name: Reimer, Tamara W.
name: Welsh, William F.
name: Mukai, Koji
name: Ringwald, F. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present optical and X-ray time-series photometry of EI UMa that reveal modulation at 746 and 770 s, which we interpret as the white dwarf spin and spin-orbit sidebands. These detections, combined with previous X-ray studies, establish EI UMa as an intermediate polar. We estimate the mass accretion rate to be ~ 3.6 x 10^{17} g s^{-1}, which is close to, and likely greater than, the critical rate above which dwarf nova instabilities are suppressed. We also estimate the white dwarf to have a large magnetic moment mu > (3.4 +/- 0.2) x 10^{33} G cm^3. The high mass accretion rate and magnetic moment imply the existence of an accretion ring rather than a disk, and along with the relatively long orbital period, these suggest that EI UMa is a rare example of a pre-polar cataclysmic variable.
description: To be published in The Astrophysical Journal
Absence of high temperature superconductivity in hydrides under pressure
Creators: name: Hirsch, J. E.
name: Marsiglio, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The long-sought goal of room-temperature superconductivity has reportedly recently been realized in a carbonaceous sulfur hydride compound under high pressure, as reported by Snider et al. [1]. The evidence presented in that paper is stronger than in other similar recent reports of high temperature superconductivity in hydrides under high pressure [2-7], and has been received with universal acclaim [8-10]. Here we point out that features of the experimental data shown in Ref. [1] indicate that the phenomenon observed in that material is not superconductivity. This observation calls into question earlier similar claims of high temperature conventional superconductivity in hydrides under high pressure based on similar or weaker evidence [2-7].
description: 3 pages
Rough translation of file 024_B (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 files VP-260314-03 and VP-260314-04: Rough translation (minute-by-minute) of file 024_B (tape 024, side B) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from the beginning of the file to 11:04 (VP-260314-03) and from 11:04 to 35:02 (VP-260314-04); no transcription in this session, translation only. Due to re-numbering, tape 024_B has been assigned to the CLA item number LA256.024, audio file LA256.024B.
Handlungsorientierungen, Integrationspraktiken und Einstellungen zivilgesellschaftlicher Akteur*innen in ländlichen Räumen
Creators: name: Bürer, Miriam
name: Glorius, Birgit
name: Schneider, Hanne
name: Gasch, Simone
name: Bürer, Miriam
name: Glorius, Birgit
name: Schneider, Hanne
name: Gasch, Simone
Publisher: name: Unknown
Year: 2021
Subjects: subject: Consumer/Household Economics
subject: International Relations/Trade
subject: Labor and Human Capital
subject: Integration
subject: Geflüchtete
subject: Migration
subject: Deutungsmuster
subject: Narrationen von Integration in ländlichen Räumen
subject: integration
subject: refugees
subject: asylum seekers
subject: attitudes on integration
subject: integration in rural regions

description: This working paper addresses action orientations of civil society actors who are involved in integration processes of asylum seekers and refugees in rural areas. The interviewees are important local actors with essential local expertise in this field. The aim of this paper is to analyse the receptiveness of local societies regarding refugees, other migrants, or newcomers in general. The main hypothesis is, that general orientations regarding the meaning of “integration” shapes societies’ responses towards newcomers. Thus, this paper presents varied interpretations of the term “integration”, which are connected to the varied societal contexts, collective mindsets and actors’ self-positionings in the respective locality or region. A second focus of the paper is to analyse how narrations of “integration” are embedded in narrations of “rurality”. The issues here are in particular societal and structural conditions and challenges of rural areas which have been discussed on a local level, and have been reinforced by the arrival of refugees in 2015. These first findings stem from an interview series which was carried out in the context of the joint project “Future for refugees in rural regions of Germany”.
description: DOI:10.3220/WP1613480791000
Audiovisual speech perception in 4-month-old infants
Creators: name: Desjardins, Renée Nicole
Publisher: name: University of British Columbia
Year: 2009

description: Previous research indicates that for adults and children the perception of speech can be significantly influenced by watching a speaker's mouth movements. For example, hearing the syllable /bi/ while watching a speaker mouth the syllable /vi/ results in reports of a 'heard' /vi/. Some evidence suggests young infants also may be able to integrate heard and seen speech. One theory suggests that an innate link between perception and production (Liberman & Mattingly, 1985) accounts for this phenomenon while another theory suggests that experience (e.g., producing speech sounds) may be necessary into order to develop fully the underlying representation of visible speech (Desjardins, Rogers & Werker, in press; Meltzoff & Kuhl, 1994). My dissertation addresses the above controversy by examining whether the integration of heard and seen speech is obligatory for young infants as it is for adults. In Experiment 1, 4-month-old female infants habituated to audiovisual /bi/ showed renewed visual interest to an auditory /bi/-visual NM suggesting that they may have perceived the auditory /bi/-visual /vi/ as /vi/, as do adults. In Experiment 2, neither male nor female infants showed renewed visual interest to a dishabituation stimulus which represents only a change in mouth movements. In Experiment 3, male infants looked longer to an audiovisual /bi/ than to an audiovisual /vi/ following habituation to an audio /bi/-visual /vi/, while female infants tended to look only slightly longer to an audiovisual /vi/ than to an audiovisual /bi/. Taken together these experiments suggest that at least some infants are able to integrate heard and seen speech, but that they do not do so consistently. Although an innate mechanism may be responsible for integration, a role for experience is suggested as integration does not appear to be obligatory for young infants as it is for adults.
Synchronization in the presence of memory
Creators: name: Morgado, Rafael
name: Ciesla, Michal
name: Longa, Lech
name: Oliveira, Fernando A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the effect of memory on synchronization of identical chaotic systems driven by common external noises. Our examples show that while in general synchronization transition becomes more difficult to meet when memory range increases, for intermediate ranges the synchronization tendency of systems can be enhanced. Generally the synchronization transition is found to depend on the memory range and the ratio of noise strength to memory amplitude, which indicates on a possibility of optimizing synchronization by memory. We also point out on a close link between dynamics with memory and noise, and recently discovered synchronizing properties of networks with delayed interactions.
Letter from James Goldie to [R.S.] Dormer, August 27, 1927
Creators: name: Goldie, James
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to R.S. Dormer from James Goldie, dated August 27, 1927, regarding updates on this year's season at the Ranche and discussion of Caesar's cottage being vacant; includes a copy of a letter sent to McAllister on Ranch news.
Moments and saturation properties of eigenstates
Creators: name: Bojowald, Martin
name: Guglielmon, Jonathan
name: van Kuppeveld, Martijn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Eigenvalues are defined for any element of an algebra of observables and do not require a representation in terms of wave functions or density matrices. A systematic algebraic derivation based on moments is presented here for the harmonic oscillator, together with a perturbative treatment of anharmonic systems. In this process, a collection of inequalities is uncovered which amount to uncertainty relations for higher-order moments saturated by the harmonic-oscillator excited states. Similar saturation properties hold for anharmonic systems order by order in perturbation theory. The new method, based on recurrence relations for moments of a state combined with positivity conditions, is therefore able to show new physical features.
description: 30 pages
High fidelity universal set of quantum gates using non-adiabatic rapid passage
Creators: name: Li, R.
name: Hoover, M.
name: Gaitan, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Numerical simulation results are presented which suggest that a class of non-adiabatic rapid passage sweeps first realized experimentally in 1991 should be capable of implementing a universal set of quantum gates G_{u} that operate with high fidelity. The gates constituting G_{u} are the Hadamard and NOT gates, together with variants of the phase, π/8, and controlled-phase gates. The universality of G_{u} is established by showing that it can construct the universal set consisting of Hadamard, phase, π/8, and controlled-NOT gates. Sweep parameter values are provided which simulations indicate will produce the different gates in G_{u}, and for which the gate error probability P_{e} satisfies: (i) P_{e} < 10^{-4} for the one-qubit gates; and (ii) P_{e} < 1.27x 10^{-3} for the modified controlled-phase gate. The sweeps in this class are non-composite and generate controllable quantum interference effects that allow the gates in G_{u} to operate non-adiabatically while maintaining high fidelity. These interference effects have been observed using NMR, and it has previously been shown how these rapid passage sweeps can be applied to atomic systems using electric fields. Here we show how these sweeps can be applied to both superconducting charge and flux qubit systems. The simulations suggest that the universal set of gates G_{u} produced by these rapid passage sweeps shows promise as possible elements of a fault-tolerant scheme for quantum computing.
description: 28 pages, 3 figures
Magnetic field of Josephson vortices outside superconductors
Creators: name: Kogan, V. G.
name: Dobrovitski, V. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We consider the structure of Josephson vortices approaching the junction boundary with vacuum in large area Josephson junctions with the Josephson length $λ_J$ large relative to the London penetration depth $λ_L$. Using the stability argument for one-dimentional solitons with respect to 2D perturbations, it is shown that on the scale $λ_J$ the Josephson vortices do not spread near the boundary in the direction of the junction. %, which is in a striking difference with behavior of Abrikosov vortices exiting superconductors. The field distribution in vacuum due to the Josephson vortex is evaluated, the information needed for the Scanning SQUID Microscopy.
description: 5 RevTeX pages, 3 eps figures. The second version includes more detailed explanations and corrections, and slightly modified figures
Personalized Education in the AI Era: What to Expect Next?
Creators: name: Maghsudi, Setareh
name: Lan, Andrew
name: Xu, Jie
name: van der Schaar, Mihaela
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The objective of personalized learning is to design an effective knowledge acquisition track that matches the learner's strengths and bypasses her weaknesses to ultimately meet her desired goal. This concept emerged several years ago and is being adopted by a rapidly-growing number of educational institutions around the globe. In recent years, the boost of artificial intelligence (AI) and machine learning (ML), together with the advances in big data analysis, has unfolded novel perspectives to enhance personalized education in numerous dimensions. By taking advantage of AI/ML methods, the educational platform precisely acquires the student's characteristics. This is done, in part, by observing the past experiences as well as analyzing the available big data through exploring the learners' features and similarities. It can, for example, recommend the most appropriate content among numerous accessible ones, advise a well-designed long-term curriculum, connect appropriate learners by suggestion, accurate performance evaluation, and the like. Still, several aspects of AI-based personalized education remain unexplored. These include, among others, compensating for the adverse effects of the absence of peers, creating and maintaining motivations for learning, increasing diversity, removing the biases induced by the data and algorithms, and the like. In this paper, while providing a brief review of state-of-the-art research, we investigate the challenges of AI/ML-based personalized education and discuss potential solutions.
Running-coupling effects in the triple-differential charmless semileptonic decay width
Creators: name: Gambino, Paolo
name: Gardi, Einan
name: Ridolfi, Giovanni
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the fully-differential B -> X_u l nu decay width to all orders in perturbation theory in the large-beta0 limit. Each of the five structure functions that build the hadronic tensor is expressed as a Borel integral, summing up O(CF beta0^{n-1} alpha_s^n) corrections for any n. We derive analytic expressions for the Borel transforms of both real and virtual diagrams with a single dressed gluon, and perform an all-order infrared subtraction, where the Borel parameter serves also as an infrared regulator. Expanding the result we recover the known triple-differential NLO coefficient, and obtain an explicit expression for the O(CF beta0 alpha_s^2) triple-differential NNLO correction. This result can be used to improve the determination of |V_{ub}| from inclusive B -> X_u l nu measurements at the B factories with a variety of kinematic cuts.
description: 40 pages
Topology of Coronal Magnetic Fields: Extending the Magnetic Skeleton Using Null-like Points
Creators: name: Lee, D. T.
name: Brown, D. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Many phenomena in the Sun's atmosphere are magnetic in nature and study of the atmospheric magnetic field plays an important part in understanding these phenomena. Tools to study solar magnetic fields include magnetic topology and features such as magnetic null points, separatrix surfaces, and separators. The theory of these has most robustly been developed under magnetic charge topology, where the sources of the magnetic field are taken to be discrete, but observed magnetic fields are continuously distributed, and reconstructions and numerical simulations typically use continuously distributed magnetic boundary conditions. This article investigates the pitfalls in using continuous source descriptions, particularly when null points on the $z=0$ plane are obscured by the continuous flux distribution through, e.g., the overlap of non-point sources. The idea of null-like points on the boundary is introduced where the parallel requirement on the field $B_{\parallel}=0$ is retained but the requirement on the perpendicular component is relaxed, i.e., $B_{\perp}\ne0$. These allow the definition of separatrix-like surfaces which are shown (through use of a squashing factor) to be a class of quasi-separatrix layer, and separator-like lines which retain the x-line structure of separators. Examples are given that demonstrate that the use of null-like points can reinstate topological features that are eliminated in the transition from discrete to continuous sources, and that their inclusion in more involved cases can enhance understanding of the magnetic structure and even change the resulting conclusions. While the examples in this article use the potential approximation, the definition of null-like points is more general and may be employed in other cases such as force-free field extrapolations and MHD simulations.
description: 21 pages, 11 figures, Accepted for publication in SolPhys
Rough translation of file 024_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-260314-02: Rough translation (minute-by-minute) of file 024_A (tape 024, side A) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from 29:05 to the end of the file; no transcription in this session, translation only. Due to re-numbering, tape 024_A has been assigned to the CLA item number LA256.024, audio file LA256.024A.