cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dynamical Exchanges in Facilitated Models of Supercooled liquids
Creators: name: Jung, YounJoon
name: Garrahan, Juan P.
name: Chandler, David
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate statistics of dynamical exchange events in coarse--grained models of supercooled liquids in spatial dimensions $d=1$, 2, and 3. The models, based upon the concept of dynamical facilitation, capture generic features of statistics of exchange times and persistence times. Here, distributions for both times are related, and calculated for cases of strong and fragile glass formers over a range of temperatures. Exchange time distributions are shown to be particularly sensitive to the model parameters and dimensions, and exhibit more structured and richer behavior than persistence time distributions. Mean exchange times are shown to be Arrhenius, regardless of models and spatial dimensions. Specifically, $ \sim c^{-2}$, with $c$ being the excitation concentration. Different dynamical exchange processes are identified and characterized from the underlying trajectories. We discuss experimental possibilities to test some of our theoretical findings.
description: 11 pages, 14 figures, minor corrections made, paper published in Journal of Chemical Physics
Additional file 2 of Location matters: highly divergent protein levels in samples from different CNS compartments in a clinical trial of rituximab for progressive MS
Creators: name: Bergman, Joakim
name: Svenningsson, Anders
name: Liv, Per
name: Bergenheim, Tommy
name: Burman, Joachim
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 2: Table S1. Overview of results. Left side of the table lists all proteins detected in the indicated compartment, while the right side of the table lists the number of proteins with a p-value ≤ 0.05. The numbers show the amount of proteins with a higher level in respective compartment.
Die Quelle der Ergötzlichen Erzählungen des Bar Hebräus
Creators: name: Marzolph, Ulrich
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 68 (1984): Oriens christianus, Band 68
title: Using the Froude Number to Improve Orographic Snow Forecasts in the Green Mountains of Vermont
Creators: name: Muccilli, Michael
Publisher: name: NOAA National Weather Service Eastern Region
publisherIdentifier: https://ror.org/02txa8h30
publisherIdentifierScheme: ROR
Year: 2015

description: Eastern Region technical attachment (National Weather Service (U.S.)) ; 2015-05
description: Orographic snow is a very challenging aspect of forecasting in the northeastern United States. This paper provides a method for improving these forecasts using the Froude number. Past research has shown that variations in the non-dimensional Froude number during upslope snow events can be correlated to the nature of the orographic snow bands, and the distribution of snowfall accumulations. Twenty-five observed northwest flow orographic snowfall cases from 2007 to 2012 in the Green Mountains of Vermont are examined with a focus on the Froude number during the events. Composite synoptic analyses show 500-hPa northwest flow and cyclonic north to northwest flow at 850 hPa. In these cases, the Froude number has a critical level of 1.0, at which events lower than this critical level, the flow becomes blocked and precipitation backs up into the lower elevations of the western slopes of the Green Mountains. With Froude numbers less than 0.5, precipitation affects the Champlain Valley and the Burlington metropolitan area. At Froude numbers above 1.0, air flows more freely over the Green Mountain spine, and the majority of the precipitation falls along the mountains and downwind. The forecast Froude number, in addition to other fields from numerical weather prediction models, can assist forecasters in determining the potential for and possible distribution of orographic snow.
Secure offloading and partitioning for heterogeneous CPU-FPGA systems
Creators: name: Ye, Mengmei
Publisher: name: No Publisher Supplied
Year: 2021

description: Heterogeneous CPU-FPGA systems have been shown to achieve significant performance gains in domain-specific computing. However, contrary to the huge efforts invested on the performance acceleration, the community has not yet investigated the security consequences due to incorporating FPGA into the traditional CPU-based architecture. In fact, the interplay between CPU and FPGA in such a heterogeneous system may introduce brand new attack surfaces if not well controlled. We develop a hardware isolation-based secure architecture, namely HISA, to mitigate the identified new threats. HISA extends the CPU-based trusted execution environment (TEE) to the heterogeneous FPGA components to enhance the security of the CPU-FPGA system. To securely offload the application to the FPGA part of HISA, we develop ApproVer to verify the security of the FPGA IP cores by applying an approximate computing-based verification mechanism. To help developers deploy applications on HISA, we develop TZSlicer to securely partition the software by meeting the security requirements and maintaining the original functionality. Furthermore, we explore another dimension of heterogeneity by extending HISA to a local-cloud system to support secure and privacy-preserving computations offloaded from the local user to the remote service provider.
Extended Fermion Representation of Multi-Charge 1/2-BPS Operators in AdS/CFT -- Towards Field Theory of D-Branes --
Creators: name: Yoneya, Tamiaki
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend the fermion representation of single-charge 1/2-BPS operators in the four-dimensional N=4 super Yang-Mills theory to general (multi-charge) 1/2-BPS operators such that all six directions of scalar fields play roles on an equal footing. This enables us to construct a field-theorectic representation for a second-quantized system of spherical D3-branes in the 1/2-BPS sector. The Fock space of D3-branes is characterized by a novel exclusion principle (called `Dexclusion' principle), and also by a nonlocality which is consistent with the spacetime uncertainty relation. The Dexclusion principle is realized by composites of two operators, obeying the usual canonical anticommutation relation and the Cuntz algebra, respectively. The nonlocality appears as a consequence of a superselction rule associated with a symmetry which is related to the scale invariance of the super Yang-Mills theory. The entropy of the so-called superstars, with multiple charges, which have been proposed to be geometries corresponding to the condensation of giant gravitons is discussed from our viewpoint and is argued to be consistent with the Dexclusion principle. Our construction may be regarded as a first step towards a possible new framework of general D-brane field theory.
description: 43 pages, 4 figures; version 2, corrected typos and added references
Nochmals zur Datierung der Kanonessammlung des Elias von Damaskus
Creators: name: Kaufhold, Hubert
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 68 (1984): Oriens christianus, Band 68
Riemannian Optimization on the Symplectic Stiefel Manifold
Creators: name: Gao, Bin
name: Son, Nguyen Thanh
name: Absil, P. -A.
name: Stykel, Tatjana
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: The symplectic Stiefel manifold, denoted by $\mathrm{Sp}(2p,2n)$, is the set of linear symplectic maps between the standard symplectic spaces $\mathbb{R}^{2p}$ and $\mathbb{R}^{2n}$. When $p=n$, it reduces to the well-known set of $2n\times 2n$ symplectic matrices. Optimization problems on $\mathrm{Sp}(2p,2n)$ find applications in various areas, such as optics, quantum physics, numerical linear algebra and model order reduction of dynamical systems. The purpose of this paper is to propose and analyze gradient-descent methods on $\mathrm{Sp}(2p,2n)$, where the notion of gradient stems from a Riemannian metric. We consider a novel Riemannian metric on $\mathrm{Sp}(2p,2n)$ akin to the canonical metric of the (standard) Stiefel manifold. In order to perform a feasible step along the antigradient, we develop two types of search strategies: one is based on quasi-geodesic curves, and the other one on the symplectic Cayley transform. The resulting optimization algorithms are proved to converge globally to critical points of the objective function. Numerical experiments illustrate the efficiency of the proposed methods.
description: 28 pages, 7 figures, 5 tables
Speech recognition & diphone extraction for natural speech synthesis
Creators: name: Darbandi, Hossein B.
Publisher: name: University of British Columbia
Year: 2009

description: Modern speech synthesizers use concatenated words and sub-word segments, such as diphones, to synthesize natural speech. Synthesizers available today can synthesize speech with only a limited selection of voices provided by the vendors. The voice segments (e.g. words & diphones) are often created using semi-manual processes that are prone to human error and make the segments non-uniform. The main goal of this thesis is developing an automatic method to segment and label a natural speech into words, diphones, and phonemes. To segment speech into words and sub-words, I use a speech recognition engine. The commercially available speech recognition engines do not provide all the necessary functionality to segment the speech into diphones accurately. As a result, I have developed an engine to segment speech. For developing the engine, I have employed HTK tools provided by Cambridge University, available for free.
Additional file 1 of Location matters: highly divergent protein levels in samples from different CNS compartments in a clinical trial of rituximab for progressive MS
Creators: name: Bergman, Joakim
name: Svenningsson, Anders
name: Liv, Per
name: Bergenheim, Tommy
name: Burman, Joachim
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 1: Figure S1. Proximity Extension Assay (PEA). (A) a matched pair of antibodies linked to unique oligonucleotides are added for each protein of interest. (B) When bound to a protein, the paired oligonucleotides come in close vicinity of each other and hybridize, which enables a DNA amplification by the addition of a DNA polymerase. (C) The DNA amplification is detected and quantified by quantitative real-time PCR. Picture provided by Olink Proteomics.
Wine Farms between Specialisation and Diversification – Empirical Insights from Switzerland and Romania
Creators: name: Mann, Stefan
name: Stefan, Petrica
name: Mann, Stefan
name: Stefan, Petrica
Publisher: name: Unknown
Year: 2018
Subjects: subject: Farm Management
subject: Marketing
subject: FOS: Economics and business
subject: wine tourism
subject: grape pressing
subject: comparative economics

description: While economists often emphasise the advantages of specialisation, power asymmetries between farmers and processors and risk mitigation are arguments for diversification in the primary sector. Swiss and Romanian wine farms are used to test the hypothesis that pressing grapes and processing them into wine will be financially advantageous for wine farms, while other diversification strategies are less promising. Survey results verify this hypothesis for Switzerland. For Romania, a winery on the farm and a positive attitude towards wine tourism are advantageous. Some amenities on the farm such as events or playgrounds allow higher prices to be charged, but this does not result in a better financial situation. Another success factor for both countries is the combination with arable farming. The conclusion is that targeted and well-adapted diversification strategies on wine farms can be recommended.
Bypassing the computational bottleneck of quantum-embedding theories for strong electron correlations with machine learning
Creators: name: Rogers, John
name: Lee, Tsung-Han
name: Pakdel, Sahar
name: Xu, Wenhu
name: Dobrosavljević, Vladimir
name: Yao, Yong-Xin
name: Christiansen, Ove
name: Lanatà, Nicola
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A cardinal obstacle to performing quantum-mechanical simulations of strongly-correlated matter is that, with the theoretical tools presently available, sufficiently-accurate computations are often too expensive to be ever feasible. Here we design a computational framework combining quantum-embedding (QE) methods with machine learning. This allows us to bypass altogether the most computationally-expensive components of QE algorithms, making their overall cost comparable to bare Density Functional Theory (DFT). We perform benchmark calculations of a series of actinide systems, where our method describes accurately the correlation effects, reducing by orders of magnitude the computational cost. We argue that, by producing a larger-scale set of training data, it will be possible to apply our method to systems with arbitrary stoichiometries and crystal structures, paving the way to virtually infinite applications in condensed matter physics, chemistry and materials science.
description: Main text (6 pages, 4 figures ) and supplemental material (5 pages)
Photon number resolving detection at telecom wavelength with a charge integration photon detector
Creators: name: Fujiwara, Mikio
name: Sasaki, Masahide
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate multiphoton discrimination at telecom wavelength with the readout frequency of 40 Hz by charge integration photon detector (CIPD). The CIPD consists of an InGaAs pin photodiode and a GaAs junction field effect transistor as a pre-amplifier in a charge integration circuit, which is cooled to 4.2 K to reduce thermal noise. The quantum efficiency of the CIPD (detector itself) is 80% for 1530 nm light, and the readout noise is measured as 0.26 electrons at 40 Hz. We can construct Poisson distributions of photo-carriers with distinguished peaks at each photo-carrier number corresponding to the signal to noise ratio of about 3.
description: 12 pages, 3 figures. to appear in Optics Letters
Functional-integral based perturbation theory for the Malthus-Verhulst process
Creators: name: Moloney, Nicholas R.
name: Dickman, Ronald
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We apply a functional-integral formalism for Markovian birth and death processes to determine asymptotic corrections to mean-field theory in the Malthus-Verhulst process (MVP). Expanding about the stationary mean-field solution, we identify an expansion parameter that is small in the limit of large mean population, and derive a diagrammatic expansion in powers of this parameter. The series is evaluated to fifth order using computational enumeration of diagrams. Although the MVP has no stationary state, we obtain good agreement with the associated {\it quasi-stationary} values for the moments of the population size, provided the mean population size is not small. We compare our results with those of van Kampen's $Ω$-expansion, and apply our method to the MVP with input, for which a stationary state does exist.
description: 24 pages, 15 figures
Quantitative H and K band spectroscopy of Galactic OB-stars at medium resolution
Creators: name: Repolust, T.
name: Puls, J.
name: Hanson, M. M.
name: Kudritzki, R. -P.
name: Mokiem, M. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we have analyzed 25 Galactic O and early B-stars by means of H and K band spectroscopy, with the primary goal to investigate to what extent a lone near-IR spectroscopy is able to recover stellar and wind parameters derived in the optical. Most of the spectra have been taken with SUBARU IRCS, at a resolution of 12,000, and with a very high S/N (200 or better). In order to synthesize the strategic H/He lines, we have used our recent, line-blanketed version of FASTWIND. First we investigated the predicted behaviour of the strategic lines. In contradiction to what one expects from the optical in the O-star regime, almost all photospheric H/HeI/HeII H/K band lines become stronger if the gravity decreases. Concerning H and HeII, this finding is related to the behaviour of Stark broadening as a function of electron density, which in the line cores is different for members of lower (optical) and higher (IR) series. Regarding HeI, the predicted behaviour is due to some subtle NLTE effects resulting in a stronger overpopulation of the lower level when the gravity decreases. For most of our objects, we obtained good fits, except for the line cores of Br_gamma in early O-stars with significant mass-loss, where this discrepancy might be an indirect effect of clumping. After having derived the stellar and wind parameters from the IR, we have compared them to results from previous optical analyses. Overall, the IR results coincide in most cases with the optical ones within the typical errors usually quoted for the corresponding parameters, i.e, an uncertainty in Teff of 5%, in log g of 0.1 dex and in Mdot of 0.2 dex, with lower errors at higher wind densities. Outliers above the 1-sigma level where found in four cases with respect to log g and in two cases for Mdot.
description: 26 pages, 15 figures, A&A, in press
Additional file 6 of BIN1 protein isoforms are differentially expressed in astrocytes, neurons, and microglia: neuronal and astrocyte BIN1 are implicated in tau pathology
Creators: name: Taga, Mariko
name: Petyuk, Vladislav A.
name: White, Charles
name: Marsh, Galina
name: Yiyi Ma
name: Hans-Ulrich Klein
name: Connor, Sarah M.
name: Kroshilina, Alexandra
name: Yung, Christina J.
name: Khairallah, Anthony
name: Olah, Marta
name: Schneider, Julie
name: Karhohs, Kyle
name: Carpenter, Anne E.
name: Ransohoff, Richard
name: Bennett, David A.
name: Crotti, Andrea
name: Bradshaw, Elizabeth M.
name: Jager, Philip L. De
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 6.
Nucleon structure from generalized parton distributions in lattice QCD
Creators: name: Gockeler, M.
name: Hagler, Ph.
name: Horsley, R.
name: Pleiter, D.
name: Rakow, P. E. L.
name: Schafer, A.
name: Schierholz, G.
name: Zanotti, J. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: This talk presents results from the QCDSF-UKQCD collaboration for moments of leading twist generalized parton distributions in two-flavor lattice QCD based on O(a) improved Wilson Fermions. We study helicity independent and helicity flip GPDs with a focus on densities of quarks in the transverse plane.
description: 8 pages, 5 figures, Talk given at the Workshop on Computational Hadron Physics, Cyprus, September 14-17, 2005
A helicoidal transfer matrix model for inhomogeneous DNA melting
Creators: name: Michoel, Tom
name: Van de Peer, Yves
Publisher: name: arXiv
Year: 2005
Subjects: subject: Biomolecules (q-bio.BM)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: An inhomogeneous helicoidal nearest-neighbor model with continuous degrees of freedom is shown to predict the same DNA melting properties as traditional long-range Ising models, for free DNA molecules in solution, as well as superhelically stressed DNA with a fixed linking number constraint. Without loss of accuracy, the continuous degrees of freedom can be discretized using a minimal number of discretization points, yielding an effective transfer matrix model of modest dimension (d=36). The resulting algorithms to compute DNA melting profiles are both simple and efficient.
description: v3: Matlab toolbox included with source file; article unchanged, 12 pages, 11 figures, RevTeX
Point Charge Self-Energy in the General Relativity
Creators: name: Golubev, Mikhail B.
name: Kelner, Stanislav R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Singularities in the metric of the classical solutions to the Einstein equations (Schwarzschild, Kerr, Reissner -- Nordström and Kerr -- Newman solutions) lead to appearance of generalized functions in the Einstein tensor that are not usually taken into consideration. The generalized functions can be of a more complex nature than the Dirac $\d$-function. To study them, a technique has been used based on a limiting solution sequence. The solutions are shown to satisfy the Einstein equations everywhere, if the energy-momentum tensor has a relevant singular addition of non-electromagnetic origin. When the addition is included, the total energy proves finite and equal to $mc^2$, while for the Kerr and Kerr--Newman solutions the angular momentum is $mc {\bf a}$. As the Reissner--Nordström and Kerr--Newman solutions correspond to the point charge in the classical electrodynamics, the result obtained allows us to view the point charge self-energy divergence problem in a new fashion.
description: VI Fridmann Seminar, France, Corsica, Corgeze, 2004, LaTeX, 6 pages, 2 figes
Supplementary material.docx
Creators: name: McGarity-Shipley, Ellen
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 520206
subject: Psychophysiology

description: Supplementary material for published journal article. Two supplements in total. 1) Food-related stress and shame scale used to screen participants for study; 2) Nutrition information that was provided to participants for each beverage condition. Please note that nutrition information for "Vanilla Nutrishake" is inaccurate and ingredient list is fabricated for purposes of participant deception. In reality "Vanilla Nutrishake" was the exact same beverage as the "French Vanilla Milkshake".
New Catalogs of Compact Radio Sources in the Galactic Plane
Creators: name: White, Richard L.
name: Becker, Robert H.
name: Helfand, David J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Archival data have been combined with recent observations of the Galactic plane using the Very Large Array to create new catalogs of compact centimetric radio sources. The 20 cm source catalog covers a longitude range of -20 deg < l < 120 deg; the latitude coverage varies from +- 0.8 deg to +- 2.7 deg. The total survey area is ~331 sq deg; coverage is 90% complete at a flux density threshold of ~14 mJy, and over 5000 sources are recorded. The 6 cm catalog covers 43 sq deg in the region -10 deg < l < 42 deg, |b| < 0.4 deg to a 90% completeness threshold of 2.9 mJy; over 2700 sources are found. Both surveys have an angular resolution of ~6 arcsec. These catalogs provide a 30% (at 20 cm) to 50% (at 6 cm) increase in the number of high-reliability compact sources in the Galactic plane, as well as providing greatly improved astrometry, uniformity, and reliability; they should prove useful for comparison with new mid- and far-infrared surveys of the Milky Way.
description: 14 pages, 7 figures, 6 tables; accepted for August 2005 Astronomical Journal; numerous minor revisions in paper and catalogs from first version
Value-Distribution of the Riemann Zeta-Function along its Julia Lines
Creators: name: Steuding, Jörn
name: Suriajaya, Ade Irma
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 11M06, 30D35

description: For an arbitrary complex number $a\neq 0$ we consider the distribution of values of the Riemann zeta-function $ζ$ at the $a$-points of the function $Δ$ which appears in the functional equation $ζ(s)=Δ(s)ζ(1-s)$. These $a$-points $δ_a$ are clustered around the critical line $1/2+i\mathbb{R}$ which happens to be a Julia line for the essential singularity of $ζ$ at infinity. We observe a remarkable average behaviour for the sequence of values $ζ(δ_a)$.
description: 11 pages, dedicated to the Memory of Stephan Ruscheweyh
Interaction between DNA and the Hfq amyloid-like region triggers a viscoelastic response
Creators: name: Hamoui, Omar El
name: Yadav, Indresh
name: Radiom, Milad
name: Wien, Frank
name: Berret, Jean-Francois
name: van der Maarel, Johan R. C.
name: Arluison, Véronique
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Molecular transport of biomolecules plays a pivotal role in the machinery of life. Yet, this role is poorly understood due the lack of quantitative information. Here, the role and properties of the C-terminal region of Escherichia coli Hfq is reported, involved in controlling the flow of a DNA solution. A combination of experimental methodologies has been used to probe the interaction of Hfq with DNA and to measure the rheological properties of the complex. A physical gel with a temperature reversible elasticity modulus is formed due to formation of non-covalent crosslinks. The mechanical response of the complexes shows that they are inhomogeneous soft solids. Our experiments indicate that Hfq C-terminal region could contribute to genome mechanical response. The reported viscoelasticity of the DNA-protein complex might have implications for cellular pro-cesses involving molecular transport of DNA or segments thereof.
description: 19 pages 5 figures 2 tables
A study of e+e- -> p anti-p using initial state radiation with BABAR
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The e+e- -> p anti-p cross section is determined over a range of p anti-p masses, from threshold to 4.5 GeV/c^2, by studying the e+e- -> p anti-p gamma process. The data set corresponds to an integrated luminosity of 232 fb^-1, collected with the BABAR detector at the PEP-II storage ring, at an e+e- center-of-mass energy of 10.6 GeV. The mass dependence of the ratio of electric and magnetic form factors, |G_E/G_M|, is measured for p anti-p masses below 3 GeV/c^2; its value is found to be significantly larger than 1 for masses up to 2.2 GeV/c^2. We also measure J/psi -> p anti-p and psi(2S) -> p anti-p branching fractions and set an upper limit on Y(4260) -> p anti-p production and decay.
description: 23 pages, 22 postscript figues, submitted to Phys. Rev. D
A systolic inequality with remainder in the real projective plane
Creators: name: Katz, Mikhail G.
name: Nowik, Tahl
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C23, 53A30

description: The first paper in systolic geometry was published by Loewner's student P. M. Pu over half a century ago. Pu proved an inequality relating the systole and the area of an arbitrary metric on the real projective plane. We prove a stronger version of Pu's systolic inequality with a remainder term.
description: 5 pages, to appear in Open Mathematics
Monte Carlo simulation for radiative kaon decays
Creators: name: Gatti, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For high precision measurements of K decays, the presence of radiated photons cannot be neglected. The Monte Carlo simulations must include the radiative corrections in order to compute the correct event counting and efficiency calculations. In this paper we briefly describe a method for simulating such decays.
description: 11 pages, 1 figure
Search for massive protostar candidates in the southern hemisphere: II. Dust continuum emission
Creators: name: Beltran, Maria T.
name: Brand, Jan
name: Cesaroni, Riccardo
name: Fontani, Francesco
name: Pezzuto, Stefano
name: Testi, Leonardo
name: Molinari, Sergio
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In an ongoing effort to identify and study high-mass protostellar candidates we have observed in various tracers a sample of 235 sources selected from the IRAS Point Source Catalog, mostly with dec < -30 deg, with the SEST antenna at millimeter wavelengths. The sample contains 142 Low sources and 93 High, which are believed to be in different evolutionary stages. Both sub-samples have been studied in detail by comparing their physical properties and morphologies. Massive dust clumps have been detected in all but 8 regions, with usually more than one clump per region. The dust emission shows a variety of complex morphologies, sometimes with multiple clumps forming filaments or clusters. The mean clump has a linear size of ~0.5 pc, a mass of ~320 Msolar for a dust temperature Td=30 K, an H_2 density of 9.5E5 cm-3, and a surface density of 0.4 g cm-2. The median values are 0.4 pc, 102 Msolar, 4E4 cm-3, and 0.14 g cm-2, respectively. The mean value of the luminosity-to-mass ratio, L/M ~99 Lsolar/Msolar, suggests that the sources are in a young, pre-ultracompact HII phase. We have compared the millimeter continuum maps with images of the mid-IR MSX emission, and have discovered 95 massive millimeter clumps non-MSX emitters, either diffuse or point-like, that are potential prestellar or precluster cores. The physical properties of these clumps are similar to those of the others, apart from the mass that is ~3 times lower than for clumps with MSX counterpart. Such a difference could be due to the potential prestellar clumps having a lower dust temperature. The mass spectrum of the clumps with masses above M ~100 Msolar is best fitted with a power-law dN/dM proportional to M-alpha with alpha=2.1, consistent with the Salpeter (1955) stellar IMF, with alpha=2.35.
description: 83 pages, 10 figures, 3 tables. Accepted for publication by A&A. The full paper, including Fig.2 with the maps of all the individual regions, complete Tables 1 and 2 can be found at http://www.arcetri.astro.it/~starform/publ2005.htm
Existence and uniqueness of solutions of the semiclassical Einstein equation in cosmological models
Creators: name: Meda, Paolo
name: Pinamonti, Nicola
name: Siemssen, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We prove existence and uniqueness of solutions of the semiclassical Einstein equation in flat cosmological spacetimes driven by a quantum massive scalar field with arbitrary coupling to the scalar curvature. In the semiclassical approximation, the backreaction of matter to curvature is taken into account by equating the Einstein tensor to the expectation values of the stress-energy tensor in a suitable state. We impose initial conditions for the scale factor at finite time and we show that a regular state for the quantum matter compatible with these initial conditions can be chosen. Contributions with derivative of the coefficient of the metric higher than the second are present in the expectation values of the stress-energy tensor and the term with the highest derivative appears in a non-local form. This fact forbids a direct analysis of the semiclassical equation, and in particular, standard recursive approaches to approximate the solution fail to converge. In this paper we show that, after partial integration of the semiclassical Einstein equation in cosmology, the non-local highest derivative appears in the expectation values of the stress-energy tensor through the application of a linear unbounded operator which does not depend on the details of the chosen state. We prove that an inversion formula for this operator can be found, furthermore, the inverse happens to be more regular than the direct operator and it has the form of a retarded product, hence causality is respected. The found inversion formula applied to the traced Einstein equation has thus the form of a fixed point equation. The proof of local existence and uniqueness of the solution of the semiclassical Einstein equation is then obtained applying the Banach fixed point theorem.
description: 42 pages
Experimental demonstration of sub-wavelength image channeling using capacitively loaded wire medium
Creators: name: Ikonen, Pekka
name: Belov, Pavel
name: Simovski, Constantin
name: Maslovski, Stanislav
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this letter we experimentally demonstrate a possibility to achieve significant sub-wavelength resolution of a near-field image channeled through a layer of an electromagnetic crystal. An image having radius of $λ/10$ has been realized using an electrically dense lattice of capacitively loaded wires. The loading allows to reduce the lattice period dramatically so that it is only a small fraction of the free-space wavelength. It is shown that losses in the structure only decrease the total amplitude of the image, but do not influence the resolution.
description: 4 pages, 7 figures, submitted to PRL
A toy model for generalised parton distributions
Creators: name: Cudell, J. R.
name: Bissey, F.
name: Cugnon, J.
name: Jaminon, M.
name: Lansberg, J. P.
name: Stassart, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We give the results of a simple model for the diagonal and off-diagonal valence quark distributions of a pion. We show that structure can be implemented in a gauge-invariant manner. This explicit model questions the validityof the momentum sum rule, and gives an explicit counter-example to the Wandzura-Wilczek ansatz for twist-3 GPD's.
description: 11 pages, presented at HADRONIC PHYSICS (HLPR 2004): Joint Meeting-Heidelberg-Liege-Paris-Rostock, Spa, Belgium, 16-18 December 2004, 11 pages, 11 figures, LaTeX
Supplementary figures S1-S7 from Impacts of extreme summers on European ecosystems: a comparative analysis of 2003, 2010 and 2018
Creators: name: A. Bastos
name: Z. Fu
name: P. Ciais
name: P. Friedlingstein
name: S. Sitch
name: J. Pongratz
name: U. Weber
name: M. Reichstein
name: P. Anthoni
name: A. Arneth
name: V. Haverd
name: A. Jain
name: E. Joetzjer
name: J. Knauer
name: S. Lienert
name: T. Loughran
name: P.C. McGuire
name: W. Obermeier
name: R. S. Padrón
name: H. Shi
name: H. Tian
name: N. Viovy
name: S. Zaehle
Publisher: name: The Royal Society
Year: 2020
Subjects: Biochemistry
Environmental Science

description: In Europe, three widespread extreme summer drought and heat (DH) events have occurred in 2003, 2010 and 2018. These events were comparable in magnitude but varied in their geographical distribution and biomes affected. In this study, we perform a comparative analysis of the impact of the DH events on ecosystem CO2 fluxes over Europe based on an ensemble of 11 dynamic global vegetation models (DGVMs), and the observation-based FLUXCOM product. We find that all DH events were associated with decreases in net ecosystem productivity (NEP), but the gross summer flux anomalies differ between DGVMs and FLUXCOM. At the annual scale, FLUXCOM and DGVMs indicate close to neutral or above-average land CO2 uptake in DH2003 and DH2018, due to increased productivity in spring and reduced respiration in autumn and winter compensating for less photosynthetic uptake in summer. Most DGVMs estimate lower GPP sensitivity to soil moisture during extreme summers than FLUXCOM. Finally, we show that the different impacts of the DH events at continental-scale GPP are in part related to differences in vegetation composition of the regions affected and to regional compensating or offsetting effects from climate anomalies beyond the DH centres.This article is part of the theme issue ‘Impacts of the 2018 severe drought and heatwave in Europe: from site to continental scale’.
Exponential growth of out-of-time-order correlator without chaos: inverted harmonic oscillator
Creators: name: Hashimoto, Koji
name: Huh, Kyoung-Bum
name: Kim, Keun-Young
name: Watanabe, Ryota
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide a detailed examination of a thermal out-of-time-order correlator (OTOC) growing exponentially in time in systems without chaos. The system is a one-dimensional quantum mechanics with a potential whose part is an inverted harmonic oscillator. We numerically observe the exponential growth of the OTOC when the temperature is higher than a certain threshold. The Lyapunov exponent is found to be of the order of the classical Lyapunov exponent generated at the hilltop, and it remains non-vanishing even at high temperature. We adopt various shape of the potential and find these features universal. The study confirms that the exponential growth of the thermal OTOC does not necessarily mean chaos when the potential includes a local maximum. We also provide a bound for the Lyapunov exponent of the thermal OTOC in generic quantum mechanics in one dimension, which is of the same form as the chaos bound obtained by Maldacena, Shenker and Stanford.
description: 24 pages, 14 figures; v2: Appendix B (studying other operator orderings of OTOC) added, a reference added
Why fractional derivatives with nonsingular kernels should not be used
Creators: name: Diethelm, Kai
name: Garrappa, Roberto
name: Giusti, Andrea
name: Stynes, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 26A33, 34A08, 35R11

description: In recent years, many papers discuss the theory and applications of new fractional-order derivatives that are constructed by replacing the singular kernel of the Caputo or Riemann-Liouville derivative by a non-singular (i.e., bounded) kernel. It will be shown here, through rigorous mathematical reasoning, that these non-singular kernel derivatives suffer from several drawbacks which should forbid their use. They fail to satisfy the fundamental theorem of fractional calculus since they do not admit the existence of a corresponding convolution integral of which the derivative is the left-inverse; and the value of the derivative at the initial time $t=0$ is always zero, which imposes an unnatural restriction on the differential equations and models where these derivatives can be used. For the particular cases of the so-called Caputo-Fabrizio and Atangana-Baleanu derivatives, it is shown that when this restriction holds the derivative can be simply expressed in terms of integer derivatives and standard Caputo fractional derivatives, thus demonstrating that these derivatives contain nothing new.
description: 19 pages, no figures, Editorial Survey in FCAA
Additional file 2 of Status and associated factors of birth registration in selected districts of Tigray region, Ethiopia
Creators: name: Shishay Tadesse Abay
name: Ataklti Gebreyesus Gebre-Egziabher
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Computational Biology

description: Additional file 2 : An interview guide used to assess the status and associated factors of birth registration in selected districts of Tigray Region, Ethiopia, may, 2018.
Superconducting transition in disordered granular superconductors in magnetic fields
Creators: name: Ikeda, Ryusuke
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Motivated by a recent argument that the superconducting (SC) transition field of three-dimensional (3D) disordered superconductors with granular structure in a nonzero magnetic field should lie above $H_{c2}(0)$ in low $T$ limit, the glass transition (or, in 2D, crossover) curve $H_g(T)$ of disordered quantum Josephson junction arrays is examined by incorporating SC fluctuations. It is found that the glass transition or crossover in the granular materials can be described on the same footing as the vortex-glass (VG) transition in amorphous-like (i.e., nongranular) materials. In most of 3D granular systems, the vanishing of resistivity upon cooling should occur even above $H_{c2}(0)$, while the corresponding sharp drop of the resistivity in 2D case may appear only below $H_{c2}$ as a result of an enhanced quantum fluctuation.
description: Accepted for publication in Phys. Rev. B. The content of sec.3 in v.2 was removed from here and presented more extensively in a separate paper (cond-mat/0606522) where the argument of nonsuperconducting vortex-glass in cond-mat/0512432 is shown to be false
Multiparty quantum state sharing of an arbitrary two-particle state with Einstein-Podolsky-Rosen pairs
Creators: name: Deng, Fu-Guo
name: Li, Xi-Han
name: Li, Chun-Yan
name: Zhou, Ping
name: Zhou, Hong-Yu
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A scheme for multiparty quantum state sharing of an arbitrary two-particle state is presented with Einstein-Podolsky-Rosen pairs. Any one of the $N$ agents has the access to regenerate the original state with two local unitary operations if he collaborates with the other agents, say the controllers. Moreover, each of the controllers is required to take only a product measurement $σ_x \otimes σ_x$ on his two particles, which makes this scheme more convenient for the agents in the applications on a network than others. As all the quantum source can be used to carry the useful information, the intrinsic efficiency of qubits approaches the maximal value. With a new notation for the multipartite entanglement, the sender need only publish two bits of classical information for each measurement, which reduces the information exchanged largely.
description: 5 pages, 1 figure; The revised version published
Farms Employing Foreign Workers in Italy: An Analysis with Census Micro Data
Creators: name: Coderoni, Silvia
name: Cardillo, Concetta
name: Macrì, Maria Carmela
name: Perito, Maria Angela
name: Coderoni, Silvia
name: Cardillo, Concetta
name: Macrì, Maria Carmela
name: Perito, Maria Angela
Publisher: name: Unknown
Year: 2018
Subjects: subject: Labor and Human Capital
subject: Political Economy
subject: foreign workers
subject: agricultural employment
subject: census micro data
subject: cluster analysis

description: Over the last decades, foreign workers have become a significant component of Italian agriculture workforce. Their presence and incidence are highly diversified with respect to farm typologies, type of contract and geographic location. A comprehensive representation of this complex phenomenon is thus the first step to understand the different problems and needs associated to the employment of foreign workforce. This study uses micro data from the 2010 Italian Agricultural Census to first describe what are the structural and geographical features of Italian farms employing foreign workers and then to group farms through a cluster analysis. Results give a detailed representation of the incidence of foreign workers employed, revealing which part of Italian agriculture relies more on foreign workers. The cluster analysis allows the definition of six groups: foreign workers are especially involved in livestock activities, both indoor and grazing and in farms specialized in permanent crops. Among major policy implications, analysing the presence of foreign workers can help targeting policies to agricultural production system needs.
Gluon transverse momenta and charm quark-antiquark pair production in $p-\bar p$ collisions at Tevatron
Creators: name: Luszczak, M.
name: Szczurek, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss and compare different approaches to include gluon transverse momenta for heavy quark-antiquark pair production. The correlations in azimuthal angle and in heavy quark, heavy antiquark transverse momenta are studied in detail. The results are illustrated with the help of different unintegrated gluon distribution functons (UGDF) from the literature. We compare results obtained with on-shell and off-shell matrix elements and kinematics and quantify where these effects are negligible and where they are essential. We concentrate on the region of asymmetric transverse momenta of charm quark and charm antiquark. Most of UGDFs lead in this corner of the phase space to almost full decorellation in azimuthal angle. We propose correlation observables to be best suited in order to test the existing models of UGDFs.
description: 30 pages, 16 figures
Additional file 1 of Status and associated factors of birth registration in selected districts of Tigray region, Ethiopia
Creators: name: Shishay Tadesse Abay
name: Ataklti Gebreyesus Gebre-Egziabher
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Computational Biology

description: Additional file 1 : Survey questionnaire used to assess the status and associated factors of birth registration in selected districts of Tigray Region, Ethiopia, may, 2018.