cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
CHIWEI: A code of goodness of fit tests for weighted and unweighted histograms
Creators: name: Gagunashvili, Nikolai
Publisher: name: arXiv
Year: 2011
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Methodology (stat.ME)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: 62-07 (Primary) 62F03, 62F10, 62P35, 62P30 (Secondary)

description: A self-contained Fortran-77 program for goodness of fit tests for histograms with weighted entries as well as with unweighted entries is presented. The code calculates test statistics for case of histogram with normalized weights of events and in case of unnormalized weights of events.
description: 7 pages
ARAL TEŃIZINIŃ QURÍǴAN TÚBINDE TOPIRAQ HÁM ÓSIMLIK QATLAMÍNÍŃ JAǴDAYÍ
Creators: name: Abdiganiev, Erkin
name: Babaniyazov, Baxtiyar
Publisher: name: Zenodo
Year: 2023

description: Maqala shorlanǵan topıraqlarǵa fiksator alıw procesin izertlewge arnalǵan. Izertlew jumısı Aral teńiziniń qurıǵan túbiniń shor topıraǵında ótkerildi. Ótkerilgen izertlewler tiykarında fiksator járdeminde onı alıp taslawdıń aldın alıw múmkinshiligi anıqlandı. Optimal fiksator uyqas túrde 1:(0, 0014-0, 065):(0, 008-0, 10 ) koefficientte 40% kalciy xlorid, CMC hám suyıq shiysheden ibarat boldı.
Random walks in Weyl chambers and crystals
Creators: name: Lecouvey, Cédric
name: Lesigne, Emmanuel
name: Peigné, Marc
Publisher: name: arXiv
Year: 2010
Subjects: subject: Representation Theory (math.RT)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We use Kashiwara crystal basis theory to associate a random walk W to each irreducible representation V of a simple Lie algebra. This is achieved by endowing the crystal attached to V with a (possibly non uniform) probability distribution compatible with its weight graduation. We then prove that the generalized Pitmann transform defined by Biane, Bougerol and O'Connell for similar random walks with uniform distributions yields yet a Markov chain. When the representation is minuscule, and the associated random walk has a drift in the Weyl chamber, we establish that this Markov chain has the same law as W conditionned to never exit the cone of dominant weights. At the heart of our proof is a quotient version of a renewal theorem that we state in the context of general random walks in a lattice.
description: The second version presents minor modifications to the previous one
Analysis of joint spectral multipliers on Lie groups of polynomial growth
Creators: name: Martini, Alessio
Publisher: name: arXiv
Year: 2010
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 43A22, 22E30

description: We study the problem of L^p-boundedness (1 < p < \infty) of operators of the form m(L_1,...,L_n) for a commuting system of self-adjoint left-invariant differential operators L_1,...,L_n on a Lie group G of polynomial growth, which generate an algebra containing a weighted subcoercive operator. In particular, when G is a homogeneous group and L_1,...,L_n are homogeneous, we prove analogues of the Mihlin-Hörmander and Marcinkiewicz multiplier theorems.
description: 37 pages
A classical model of the upper bounds of the cascading contribution to the second hyperpolarizability
Creators: name: Dawson, Nathan J.
name: Anderson, Benjamin R.
name: Schei, Jennifer L.
name: Kuzyk, Mark G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We investigate whether microscopic cascading of second-order nonlinearities of two molecules in the side-by-side configuration can lead to a third-order molecular nonlinear-optical response that exceeds the fundamental limit. We find that for large values of the second hyperpolarizability, the side-by-side configuration has a cascading contribution that lowers the direct contribution. However, we do find that there is a cascading contribution to the second hyperpolarizability when there is no direct contribution. Thus, while cascading can never lead to a larger nonlinear-optical response than for a single molecule with the same number of electrons, it may provide design flexibility in making large third-order susceptibility materials when the molecular second hyperpolarizability vanishes
description: 10 pages, 7 Figures, 1 table
Characterisation and Calibration of the Compact High Energy Camera for the Cherenkov Telescope Array
Creators: name: Duffy, Connor
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: The interaction of very-high energy gamma rays and charged particles, produced in the Universe's most energetic environments, with the Earth's atmosphere produces a cascade of high energy particles. Particles within this cascading shower travel at speeds faster than the speed of light in the atmosphere. As such, the particles emit Cherenkov radiation. Ground based imaging atmospheric Cherenkov telescopes use this phenomenon to observe the particle shower. In doing so, it is possible to determine the direction of the shower and thus the direction of the shower progenitor. This source determination can be used to provide an observation of the environments giving rise to such high-energy photons. The Cherenkov Telescope Array represents the latest telescope array of this kind and will provide highly sensitive observations of gamma rays ranging in energy from 20GeV to 300TeV with the use of three telescope sizes. CHEC-S is one of the Cherenkov imaging cameras proposed for the Small Sized Telescope. It is a compact imaging camera that is designed to be used with a dual-mirror Schwarzschild-Couder design telescope. In addition to this novel telescope design, CHEC-S will utilise silicon photomultipliers for the detection of Cherenkov light in conjunction with an updated iteration of front end electronics based on the TARGET ASIC. In this thesis, relevant tasks completed for the comissioning of CHEC-S is presented. In addition, the calibration of the TARGET-C digitising ASIC is outlined with a discussion on performance. A proposed change to the calibration method and enhanced performance is given. Finally, the results of the on-telescope campaign of CHEC-S is presented, highlighting the requirement for the method outlined in this thesis for the correction of TARGET-C saturation.
True Neutrality as a New Type of Flavour
Creators: name: Sharafiddinov, Rasulkhozha S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A classification of leptonic currents with respect to C-operation requires the separation of elementary particles into the two classes of vector C-even and axial-vector C-odd character. Their nature has been created so that to each type of lepton corresponds a kind of neutrino. Such pairs are united in families of a different C-parity. Unlike the neutrino of a vector type, any C-noninvariant Dirac neutrino must have his Majorana neutrino. They constitute the purely neutrino families. We discuss the nature of a corresponding mechanism responsible for the availability in all types of axial-vector particles of a kind of flavour which distinguishes each of them from others by a true charge characterized by a quantum number conserved at the interactions between the C-odd fermion and the field of emission of the corresponding types of gauge bosons. This regularity expresses the unidenticality of truly neutral neutrino and antineutrino, confirming that an internal symmetry of a C-noninvariant particle is described by an axial-vector space. Thereby, a true flavour together with the earlier known lepton flavour predicts the existence of leptonic strings and their birth in single and double beta decays as a unity of flavour and gauge symmetry laws. Such a unified principle explains the availability of a flavour symmetrical mode of neutrino oscillations.
description: 19 pages, LaTex, Published version in IJTP
Additional file 1 of Dual signal amplification coupling with DNA-templated silver nanoclusters for sensitive and label-free detection of thrombin
Creators: name: Zhang, Baojun
name: Ma, Weiwei
name: Guo, Jun
name: Zhao, Qiufeng
name: Zhang, Chuangchuang
name: Zhu, Shilong
name: Xu, Haibo
name: Yin, Yanyan
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Cancer

description: Additional file 1. Preparation of the dark silver nanoclusters (AgNCs). Table S1. The details of the probes used in this research. Fig. S1. The illustration of the fluorescence assay to study the assembly of allosteric probe. Fig. S2. PAGE analysis of DNA polymerase and endonuclease assisted chain extension. Fig. S3. Fluorescence intensities of the approach when incubated with different concentrations of endonuclease. Table S2. Comparisons of the detection performance of the established approach with former ones.
Regional Transportation Investment Analysis
Creators: name: Haefner, Lonnie E.
name: Hutchins, J.L.
name: Lang, D.E.
name: Meyer, R.
name: Haefner, Lonnie E.
name: Hutchins, J.L.
name: Lang, D.E.
name: Meyer, R.
Publisher: name: Unknown
Year: 1976
Subjects: Public Economics

description: Presented at the 17th Transportation Research Forum meeting, Oct. 29-30,1976, Boston, MA
Stokes tomography of radio pulsar magnetospheres. I. Linear polarization
Creators: name: Chung, C. T. Y.
name: Melatos, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Polarimetric studies of pulsar radio emission traditionally concentrate on how the Stokes vector (I, Q, U, V) varies with pulse longitude, with special emphasis on the position angle (PA) swing of the linearly polarized component. The interpretation of the PA swing in terms of the rotating vector model is limited by the assumption of an axisymmetric magnetic field and the degeneracy of the output with respect to the orientation and magnetic geometry of the pulsar; different combinations of the latter two properties can produce similar PA swings. This paper introduces Stokes phase portraits as a supplementary diagnostic tool with which the orientation and magnetic geometry can be inferred more accurately. The Stokes phase portraits feature unique patterns in the I-Q, I-U, and Q-U planes, whose shapes depend sensitively on the magnetic geometry, inclination angle, beam and polarization patterns, and emission altitude. We construct look-up tables of Stokes phase portraits and PA swings for pure and current-modified dipole fields, filled core and hollow cone beams, and two empirical linear polarization models, L/I = \cos θ_0 and L/I = \sin θ_0, where θ_0 is the colatitude of the emission point. We compare our look-up tables to the measured phase portraits of 24 pulsars in the European Pulsar Network online database. We find evidence in 60% of the objects that the radio emission region may depart significantly from low altitudes, even when the PA swing is S-shaped and/or the pulse-width-period relation is well satisfied. On the other hand, the data are explained adequately if the emission altitude exceeds ~10% of the light cylinder radius. We conclude that Stokes phase portraits should be analysed concurrently with the PA swing and pulse profiles in future when interpreting radio pulsar polarization data.
description: 60 pages, 58 figures, submitted to MNRAS, accepted 13 Oct 2010
A Preliminary Assessment of the Transportation Impacts of Auto Restricted Zones in U.S. Cities
Creators: name: Sherman, Len
name: Atherton, Terry J.
name: Pecknold, Wayne M.
name: Sherman, Len
name: Atherton, Terry J.
name: Pecknold, Wayne M.
Publisher: name: Unknown
Year: 1976
Subjects: Public Economics

description: Presented at the 17th Transportation Research Forum meeting, Oct. 29-30,1976, Boston, MA
A quantum mechanical model of the upper bounds of the cascading contribution to the second hyperpolarizability
Creators: name: Dawson, Nathan J.
name: Anderson, Benjamin R.
name: Schei, Jennifer L.
name: Kuzyk, Mark G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Microscopic cascading of second-order nonlinearities between two molecules has been proposed to yield an enhanced third-order molecular nonlinear-optical response. In this contribution, we investigate the two-molecule cascaded second hyperpolarizability and show that it will never exceed the fundamental limit of a single molecule with the same number of electrons as the two-molecule system. We show the apparent divergence behavior of the cascading contribution to the second hyperpolarizability vanishes when properly taking into account the intermolecular interactions. Although cascading can never lead to a larger nonlinear-optical response than a single molecule, it provides alternative molecular design configurations for creating materials with large third-order susceptibilities that may be difficult to design into a single molecule.
description: 13 pages, 9 figures, 1 table
Transport of finiteness structures and applications
Creators: name: Tasson, Christine
name: Vaux, Lionel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We describe a general construction of finiteness spaces which subsumes the interpretations of all positive connectors of linear logic. We then show how to apply this construction to prove the existence of least fixpoints for particular functors in the category of finiteness spaces: these include the functors involved in a relational interpretation of lazy recursive algebraic datatypes along the lines of the coherence semantics of system T.
Combining cluster observables and stacked weak lensing to probe dark energy: Self-calibration of systematic uncertainties
Creators: name: Oguri, Masamune
name: Takada, Masahiro
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We develop a new method of combining cluster observables (number counts and cluster-cluster correlation functions) and stacked weak lensing signals of background galaxy shapes, both of which are available in a wide-field optical imaging survey. Assuming that the clusters have secure redshift estimates, we show that the joint experiment enables a self-calibration of important systematic errors including the source redshift uncertainty and the cluster mass-observable relation, by adopting a single population of background source galaxies for the lensing analysis. It allows us to use the relative strengths of stacked lensing signals at different cluster redshifts for calibrating the source redshift uncertainty, which in turn leads to accurate measurements of the mean cluster mass in each bin. In addition, our formulation of stacked lensing signals in Fourier space simplifies the Fisher matrix calculations, as well as the marginalization over the cluster off-centering effect, the most significant uncertainty in stacked lensing. We show that upcoming wide-field surveys yield stringent constraints on cosmological parameters including dark energy parameters, without any priors on nuisance parameters that model systematic uncertainties. Specifically, the stacked lensing information improves the dark energy FoM by a factor of 4, compared to that from the cluster observables alone. The primordial non-Gaussianity parameter can also be constrained with a level of f_NL~10. In this method, the mean source redshift is well calibrated to an accuracy of 0.1 in redshift, and the mean cluster mass in each bin to 5-10% accuracies, which demonstrates the success of the self-calibration of systematic uncertainties from the joint experiment. (Abridged)
description: 29 pages, 17 figures, 6 tables, accepted for publication in Phys. Rev. D
How Robust is the Froissart Bound?
Creators: name: Azimov, Ya.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Proof of the Froissart theorem is reconsidered in a different way to extract its necessary conditions. Two physical inputs, unitarity and absence of massless intermediate hadrons, are indisputable. Also important are mathematical properties of the Legendre functions. Assumptions on dispersion relations, single or double, appear to be excessive. Instead, one should make assumptions on possible high-energy asymptotics of the amplitude in nonphysical configurations, which have today no firm basis. Asymptotics for the physical amplitude always appear essentially softer than for the nonphysical one. Froissart's paper explicitly assumed the hypothesis of power behavior and obtained asymptotic bound for total cross sections $\sim \log^2{(s/s_0)}$ with some constant $s_0$. Our bounds are slightly stronger than original Froissart ones. They show that the scale $s_0$ should itself slowly grow with $s$. Under different assumptions about asymptotic behavior of nonphysical amplitudes, the total cross section could grow even faster than $\log^2{s}$. The problem of correct asymptotics might be clarified by precise measurements at the LHC and higher energies.
description: 19 pages; v2 corresponds to the journal text
Magnetic structure and spin dynamics of quasi-one-dimensional spin-chain antiferromagnet BaCo2V2O8
Creators: name: Kawasaki, Yu
name: Gavilano, Jorge L.
name: Keller, Lukas
name: Schefer, Jurg
name: Christensen, Niels
name: Amato, Alex
name: Ohno, Takashi
name: Kishimoto, Yutaka
name: He, Zhangzhen
name: Ueda, Yutaka
name: Itoh, Mitsuru
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a neutron diffraction and muon spin relaxation muSR study of static and dynamical magnetic properties of BaCo2V2O8, a quasi-one-dimensional spin-chain system. A proposed model for the antiferromagnetic structure includes: a propagation vector k_AF = (0, 0, 1), independent of external magnetic fields for fields below a critical value H_c(T). The ordered moments, of 2.18 μ_B per Co ion, are aligned along the crystallographic c-axis. Within the screw chains, along the c axis, the moments are arranged antiferromagnetically. In the basal planes the spins are arranged ferromagnetically (forming zig-zags paths) along one of the axis and antiferromagnetically along the other. The temperature dependence of the sub-lattice magnetization is consistent with the expectations of the 3D Ising model. A similar behavior is observed for the internal static fields at different muon stopping sites. Muon time spectra measured at weak longitudinal fields and temperatures much higher than T_N can be well described using a single muon site with an exponential muon spin relaxation that gradually changes into an stretched exponential on approaching T_N. The temperature-induced changes of the relaxation suggest that the Co fluctuations dramatically slow down and the system becomes less homogeneous as it approaches the antiferromagnetic state.
description: 7 pages, 9 figures
Folate status in Germany
Creators: name: Mensink, Gert
name: Weißenborn, Anke
name: Richter, Almut
Publisher: name: Robert Koch-Institut
Year: 2016
Subjects: subject: Germany
subject: health survey
subject: DEGS 1
subject: nutrition
subject: folate
subject: 610 Medizin und Gesundheit

description: Folate is important for cell division and thus for growth and physical development. Serum folate concentrations can be used to assess a population’s folate status. In Germany, the median serum folate level of adults aged 18 to 79 is 7.5 ng/ml (women: 7.9 ng/ml, and men: 7.2 ng/ml). Approximately 86% of the adult population in Germany has adequate folate levels. Higher folate concentrations are observed among older age groups and individuals with a higher socio-economic status. However, the World Health Organization recommends that women of reproductive age should, at the population level, have significantly higher folate levels in order to reduce the risk for neural tube defects. However, the majority of women in this age group do not achieve these concentrations.
Average sex ratio and population maintenance cost
Creators: name: Garibaldi, Eduardo
name: Sobottka, Marcelo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences
subject: 37N25, 92D15, 92D25

description: The ratio of males to females in a population is a meaningful characteristic of sexual species. The reason for this biological property to be available to the observers of nature seems to be a question never asked. Introducing the notion of historically adapted populations as global minimizers of maintenance cost functions, we propose a theoretical explanation for the reported stability of this feature. This mathematical formulation suggests that sex ratio could be considered as an indirect result shaped by the antagonism between the size of the population and the finiteness of resources.
description: 18 pages. A revised new version, where all the text was improved to become more clear for the reader
The 1907 anti-Asian riots : the making of sensibility among working class men
Creators: name: McKeen, Patara
Publisher: name: University of British Columbia
Year: 2022

description: This research explores how racialized sensibility emerged through the 1907 anti-Asian riots in Vancouver and links the riots in Vancouver to the riots in Bellingham earlier in the same year. It uses mixed methods to collect data on portraits, photographs, images, editorials, and documents, employing archival ethnography to read documents along and against the grain (Stoler, 2002; 2012) to make sense of the time period and the sensibilities that underpinned the riots. Archival ethnography helps bring to light the accounts, conversations, and dialogues of colonial agents and actors, and to interpret missing data in the archive. Missing data in the archive consists of historical documents that are overlooked, misinterpreted, or destroyed. My thesis also accounts for gaps, silences, and erasures in the archive by applying critical fabulation to rearrange and reconstruct intersecting viewpoints (see Hartman, 1997; 2008; 2019). To provide a thicker analysis of archival documents, this research interprets olfactory and auditory senses as integral to the making of these riots (see Simmel, 1908/2002; see Campt, 2017; see Lee, 2010; see Mawani, 2009; see Russell, 2019; see also Blaikie, 2002). It is only through the process of combining mixed-methods, theory, and practice that the missing data in the archive can be reimagined and written as part of the historical narrative.
Role of the Tracy-Widom distribution in the finite-size fluctuations of the critical temperature of the Sherrington-Kirkpatrick spin glass
Creators: name: Castellana, Michele
name: Zarinelli, Elia
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the finite-size fluctuations due to quenched disorder of the critical temperature of the Sherrington-Kirkpatrick spin glass. In order to accomplish this task, we perform a finite-size analysis of the spectrum of the susceptibility matrix obtained via the Plefka expansion. By exploiting results from random matrix theory, we obtain that the fluctuations of the critical temperature are described by the Tracy-Widom distribution with a non-trivial scaling exponent 2/3.
The b quark mass from lattice nonrelativistic QCD
Creators: name: Hart, Alistair
name: von Hippel, Georg
name: Horgan, R. R.
name: Lee, Andrew
name: Monahan, Christopher
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present the first two-loop calculation of the heavy quark energy shift in lattice nonrelativistic QCD (NRQCD). This calculation allow us to extract a preliminary prediction of $m_b(m_b, n_f = 5) = 4.25(12)$ GeV for the mass of the b quark from lattice NRQCD simulations performed with a lattice of spacing $a=0.12$fm. Our result is an improvement on a previous determination of the b quark mass from unquenched lattice NRQCD simulations, which was limited by the use of one-loop expressions for the energy shift. Our value is in good agreement with recent results of $m_b(m_b) = 4.163(16)$ GeV from QCD sum rules and $m_b(m_b, n_f = 5) = 4.170(25)$ GeV from realistic lattice simulations using highly-improved staggered quarks. We employ a mixed strategy to simplify our calculation. Ghost, gluon and counterterm contributions to the energy shift and mass renormalisation are extracted from quenched high-beta simulations whilst fermionic contributions are calculated using automated lattice perturbation theory. Our results demonstrate the effectiveness of such a strategy.
description: 7 pages, 1 figure, Presented at The XXVIIIrd Internation Symposium on Lattice Field Theory, Lattice2010. 2 corrections to introduction and clarification in conclusions, results unchanged
Neutrinoless double-beta decay and seesaw mechanism
Creators: name: Bilenky, Samoil M.
name: Faessler, Amand
name: Potzel, Walter
name: Simkovic, Fedor
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: From the standard seesaw mechanism of neutrino mass generation, which is based on the assumption that the lepton number is violated at a large (~10exp(+15) GeV) scale, follows that the neutrinoless double-beta decay is ruled by the Majorana neutrino mass mechanism. Within this notion, for the inverted neutrino-mass hierarchy we derive allowed ranges of half-lives of the neutrinoless double-beta decay for nuclei of experimental interest with different sets of nuclear matrix elements. The present-day results of the calculation of the neutrinoless double-beta decay nuclear matrix elements are briefly discussed. We argue that if neutrinoless double-beta decay will be observed in future experiments sensitive to the effective Majorana mass in the inverted mass hierarchy region, a comparison of the derived ranges with measured half-lives will allow us to probe the standard seesaw mechanism assuming that future cosmological data will establish the sum of neutrino masses to be about 0.2 eV.
description: Some changes in sections I, II, IV, and V; two new figures; additional references
Black holes in an ultraviolet complete quantum gravity
Creators: name: Modesto, Leonardo
name: Moffat, John W.
name: Nicolini, Piero
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this Letter we derive the gravity field equations by varying the action for an ultraviolet complete quantum gravity. Then we consider the case of a static source term and we determine an exact black hole solution. As a result we find a regular spacetime geometry: in place of the conventional curvature singularity extreme energy fluctuations of the gravitational field at small length scales provide an effective cosmological constant in a region locally described in terms of a de Sitter space. We show that the new metric coincides with the noncommutative geometry inspired Schwarzschild black hole. Indeed, we show that the ultraviolet complete quantum gravity, generated by ordinary matter is the dual theory of ordinary Einstein gravity coupled to a noncommutative smeared matter. In other words we obtain further insights about that quantum gravity mechanism which improves Einstein gravity in the vicinity of curvature singularities. This corroborates all the existing literature in the physics and phenomenology of noncommutative black holes.
description: 5 pages, 2 figures, minor corrections, version matching that published by Physics Letters B
Computing Néron-Tate heights of points on hyperelliptic Jacobians
Creators: name: Holmes, David
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary: 14G40 Secondary: 11G30, 11G50, 37P30

description: It was shown by Faltings and Hriljac that the Néron-Tate height of a point on the Jacobian of a curve can be expressed as the self-intersection of a corresponding divisor on a regular model of the curve. We make this explicit and use it to give an algorithm for computing Néron-Tate heights on Jacobians of hyperelliptic curves. To demonstrate the practicality of our algorithm, we illustrate it by computing Néron-Tate heights on Jacobians of hyperelliptic curves of genus from 1 to 9.
description: 13 pages. v5: As kindly pointed out by Raymond van Bommel, the height is computed in this paper with respect to twice the theta divisor, not the theta divisor itself (as written in v4)
Dual Fermion Dynamical Cluster Approach for Strongly Correlated Systems
Creators: name: Yang, S. -X.
name: Fotso, H.
name: Hafermann, H.
name: Tam, K. -M.
name: Moreno, J.
name: Pruschke, T.
name: Jarrell, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have designed a new multi-scale approach for Strongly Correlated Systems by combining the Dynamical Cluster Approximation (DCA) and the recently introduced dual-fermion formalism. This approach employs an exact mapping from a real lattice to a DCA cluster of linear size Lc embedded in a dual fermion lattice. Short-length-scale physics is addressed by the DCA cluster calculation, while longer-length-scale physics is addressed diagrammatically using dual fermions. The bare and dressed dual Fermionic Green functions scale as O(1/Lc) so perturbation theory on the dual lattice converges very quickly. E.g., the dual Fermion self-energy calculated with simple second order perturbation theory is of order O(1/Lc^3), with third order and three body corrections down by an additional factor of O(1/Lc^2).
Future Developments in International Air Cargo Transportation
Creators: name: Gilbert, Jerome
name: Sun, Nai-Ching
name: Ilan, Amos
name: Gilbert, Jerome
name: Sun, Nai-Ching
name: Ilan, Amos
Publisher: name: Unknown
Year: 1976
Subjects: Public Economics

description: Presented at the 17th Transportation Research Forum meeting, Oct. 29-30,1976, Boston, MA
f(T) gravity mimicking dynamical dark energy. Background and perturbation analysis
Creators: name: Dent, James B.
name: Dutta, Sourish
name: Saridakis, Emmanuel N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate f(T) cosmology in both the background, as well as in the perturbation level, and we present the general formalism for reconstructing the equivalent one-parameter family of f(T) models for any given dynamical dark energy scenario. Despite the completely indistinguishable background behavior, the perturbations break this degeneracy and the growth histories of all these models differ from one another. As an application we reconstruct the f(T) equivalent for quintessence, and we show that the deviation of the matter overdensity evolution is strong for small scales and weak for large scales, while it is negligible for large redshifts.
description: 11 pages, 12 figures, version published at JCAP
Schwinger Boson Mean Field Theories of Spin Liquid States on Honeycomb Lattice: Projective Symmetry Group Analysis and Critical Field Theory
Creators: name: Wang, Fa
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by the recent numerical evidence[1] of a short-range resonating valence bond state in the honeycomb lattice Hubbard model, we consider Schwinger boson mean field theories of possible spin liquid states on honeycomb lattice. From general stability considerations the possible spin liquids will have gapped spinons coupled to Z$_2$ gauge field. We apply the projective symmetry group(PSG) method to classify possible Z$_2$ spin liquid states within this formalism on honeycomb lattice. It is found that there are only two relevant Z$_2$ states, differed by the value of gauge flux, zero or $π$, in the elementary hexagon. The zero-flux state is a promising candidate for the observed spin liquid and continuous phase transition into commensurate Néel order. We also derive the critical field theory for this transition, which is the well-studied O(4) invariant theory[2-4], and has an irrelevant coupling between Higgs and boson fields with cubic power of spatial derivatives as required by lattice symmetry. This is in sharp contrast to the conventional theory[5], where such transition generically leads to non-colinear incommensurate magnetic order. In this scenario the Z$_2$ spin liquid could be close to a tricritical point. Soft boson modes will exist at seven different wave vectors. This will show up as low frequency dynamical spin susceptibility peaks not only at the $Γ$ point (the Néel order wave vector) but also at Brillouin zone edge center $M$ points and twelve other points. Some simple properties of the $π$-flux state are studies as well. Symmetry allowed further neighbor mean field ansatz are derived in Appendix which can be used in future theoretical works along this direction.
description: mistakes in Eq.(13) and Eq.(A17) corrected on top of published version, 14 pages, 6 figures
Modulated Oscillations in Three Dimensions
Creators: name: Lilly, Jonathan M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Methodology (stat.ME)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The analysis of the fully three-dimensional and time-varying polarization characteristics of a modulated trivariate, or three-component, oscillation is addressed. The use of the analytic operator enables the instantaneous three-dimensional polarization state of any square-integrable trivariate signal to be uniquely defined. Straightforward expressions are given which permit the ellipse parameters to be recovered from data. The notions of instantaneous frequency and instantaneous bandwidth, generalized to the trivariate case, are related to variations in the ellipse properties. Rates of change of the ellipse parameters are found to be intimately linked to the first few moments of the signal's spectrum, averaged over the three signal components. In particular, the trivariate instantaneous bandwidth---a measure of the instantaneous departure of the signal from a single pure sinusoidal oscillation---is found to contain five contributions: three essentially two-dimensional effects due to the motion of the ellipse within a fixed plane, and two effects due to the motion of the plane containing the ellipse. The resulting analysis method is an informative means of describing nonstationary trivariate signals, as is illustrated with an application to a seismic record.
description: IEEE Transactions on Signal Processing, 2011
Towards a common origin of the elliptic flow, ridge and alignment
Creators: name: Dremin, Igor M.
name: Kim, Victor T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: It is claimed that elliptic flow, ridge and alignment are effects of azimuthal asymmetry, which have a common origin evolving with primary energy and stemming from the general structure of field-theoretical matrix elements. It interrelates a new ridge-phenomenon, recently found at the LHC and RHIC, with known coplanarity feature observed in collider jet physics as well as in cosmic ray studies.
description: 4 pages, few typos fixed, reference added, version published in JETP Letters
Anatomy of the Self Energy
Creators: name: Shastry, B. Sriram
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The general problem of representing the Greens function $G(k,z)$ in terms of self energy, in field theories lacking Wick's theorem, is considered. A simple construction shows that a Dyson like representation with a self energy $Σ(k,z)$ is always possible, provided we start with a spectral representation for $G(k,z)$ for finite sized systems and take the thermodynamic limit. The self energy itself can then be iteratively expressed in terms of another higher order self energy, capturing the spirit of Mori's formulation. We further discuss alternative and more general forms of $G(k,z)$ that are possible. In particular, a recent theory by the author of extremely correlated Fermi liquids at density "$n$", for Gutzwiller projected non canonical Fermi operators obtains a new form of the Greens function: $$G(k,z)= \frac{\{1- \frac{n}{2}\} + Ψ(k,z)}{z - \hat{E}_k - Φ(k,z)}, $$ with {\em a pair of self energies} $Φ(z)$ and $Ψ(z)$. Its relationship with the Dyson form is explored. A simple version of the two self energy model was shown recently to successfully fit several data sets of photoemission line shapes in cuprates. We provide details of the unusual spectral line shapes that arise in this model, with the characteristic skewed shape depending upon a single parameter. The EDC and MDC line shapes are shown to be skewed in opposite directions, and provide a testable prediction of the theory.
description: Published version 27 pages, 11 figures
Fermion doubling in condensed matter physics : simulating a weyl fermion on a lattice
Creators: name: Kapoor, Samarth
Publisher: name: University of British Columbia
Year: 2022

description: It is complicated to promote a continuum quantum theory with fermions to a lattice. This problem is caused by an unexpected appearance of extra states in the lattice theory - the fermion doubling problem. Nielsen and Ninomiya proved in 1981 that under certain conditions, it is actually impossible to find a lattice that simulates a single Weyl fermion. We realize that one of the crucial assumptions in their proof is the conservation of electric charge - a condition which is not held in topological superconductors. A common toy model for topological superconductors is the one-dimensional Kitaev wire. Thus, we propose a similar two-band three-dimensional lattice that has a single Weyl fermion in the low-energy. We find this effective theory by combining the degrees of freedom around the nodal points and then integrating out the extra degrees of freedom using the Schrieffer-Wolff transformation.
Additional file 1 of Enhancing magnetic resonance imaging-driven Alzheimer’s disease classification performance using generative adversarial learning
Creators: name: Zhou, Xiao
name: Qiu, Shangran
name: Joshi, Prajakta S.
name: Xue, Chonghua
name: Killiany, Ronald J.
name: Mian, Asim Z.
name: Chin, Sang P.
name: Au, Rhoda
name: Kolachalama, Vijaya B.
Publisher: name: figshare
Year: 2021
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Additional file 1: Figure S1. (A) Simple GAN architecture with a generator and a discriminator. (B) Simple FCN classification architecture for prediction of AD status. Figure S2. Number of cases from the ADNI cohort used for GAN and FCN model development. The cases covered by the black arrow indicate the ones used for the GAN model development and the cases covered by the red arrow indicate the ones used for the FCN model development. Figure S3. ANCOVA analysis to assess the mean image quality using SNR, BRISQUE and NIQE in the ADNI-training (a-c) and ADNI-validation (d-f) data. Table S1. Specific group differences in magnetic field strength (1.5T, 3T, 3T*) evaluated using Tukey's post hoc procedure across the image quality measures SNR, BRISQUE and NIQE in the ADNI-training, testing and validation data. Table S2. ANOVA analysis of AUCs from the ROC curves on the gender, age and scanner variables to demonstrate whether the AD classification performance differed on various groups. Figure S4. Performance of the FCN classifier based on the images generated using the simpleGAN architecture (Figure S1). (A) Sensitivity-specificity and (B) precision-recall curves are shown on the ADNI test, AIBL and NACC datasets, respectively. Figure S5. ANCOVA analysis to assess the mean image quality using SNR, BRISQUE and NIQE for simpleGAN model in the ADNI-test (a-c) and t-test results of NACC (d-f) and AIBL (g-i) data, respectively. Figure S6. ANCOVA analysis to assess the mean image quality using SNR, BRISQUE and NIQE for simpleGAN model in the ADNI-training (a-c) and ADNI-validation (d-f) data. The effect of independent variables such as age, education, MMSE scores, and type of scanner was evaluated using a stepwise forward selection process and models were adjusted accordingly. Table S3. Specific group differences in magnetic field strength (1.5T, 3T, 3T*) were evaluated using Tukey's post hoc procedure across the image quality measures SNR, BRISQUE and NIQE for the simpleGAN model in the ADNI-training, testing and validation data.
An extension of Lobachevsky formula
Creators: name: Jolany, Hassan
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics

description: In this paper we extend the Dirichlet integral formula of Lobachevsky. Let $f(x)$ be a continuous function and satisfy in the $π$-periodic assumption $f(x+π)=f(x)$, and $f(π-x)=f(x)$, $0\leq x
description: Paper is re-written with new presentation and new results added
Anti-Locking Brake Systems: The Impact of Public Safety Standards on the Demand for Truck Trailers
Creators: name: German, H. Wade
name: Peppers, Larry C.
name: German, H. Wade
name: Peppers, Larry C.
Publisher: name: Unknown
Year: 1976
Subjects: Public Economics

description: Presented at the 17th Transportation Research Forum meeting, Oct. 29-30,1976, Boston, MA
Simplest model to study reentrance in physical systems
Creators: name: Thomas, Creighton K.
name: Katzgraber, Helmut G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We numerically investigate the necessary ingredients for reentrant behavior in the phase diagram of physical systems. Studies on the possibly simplest model that exhibits reentrance, the two-dimensional random bond Ising model, show that reentrant behavior is generic whenever frustration is present in the model. For both discrete and continuous disorder distributions, the phase diagram in the disorder-temperature plane is found to be reentrant, where for some disorder strengths a paramagnetic phase exists at both high and low temperatures, but an ordered ferromagnetic phase exists for intermediate temperatures.
description: 4 pages, 5 figures
title: Predicting early dementia using Medicare claims: a feasibility study using the National Integrated Health Services Information Analysis Asset
Creators: name: Australian Institute of Health and Welfare
Publisher: name: Australian Institute of Health and Welfare
Year: 2021

description: As the third leading cause of burden of disease (AIHW 2021) and the second-leading cause of death overall (AIHW 2020a) in 2018, dementia represents a major population health issue in Australia. Dementia is a collection of symptoms caused by a range of disorders affecting the brain and is a progressive and usually irreversible condition that develops substantial health and personal care needs over time (WHO 2019).
Pfister's theorem fails in the Hermitian case
Creators: name: D'Angelo, John P.
name: Lebl, Jiri
Publisher: name: arXiv
Year: 2010
Subjects: subject: Complex Variables (math.CV)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 12D15, 14P05, 15B57, 32V15

description: We show that the Hermitian analogue of a famous result of Pfister fails. To do so we provide a Hermitian symmetric polynomial $r$ of total degree 2d such that any non-zero multiple of it cannot be written as a Hermitian sum of squares with fewer than $d+1$ squares.
description: 7 pages, to appear in Proc. Amer. Math. Soc., improved exposition in the proof
Diversity embeddings and the hypergraph sparsest cut
Creators: name: Jozefiak, Adam Daniel
Publisher: name: University of British Columbia
Year: 2022

description: Good approximations have been attained for the sparsest cut problem by rounding solutions to convex relaxations via low-distortion metric embeddings [5, 24]. Recently, Bryant and Tupper showed that this approach extends to the hypergraph setting by formulating a linear program whose solutions are diversities which are rounded via diversity embeddings into 𝓵1 [31]. Diversities are a generalization of metric spaces in which the nonnegative function is defined on all subsets as opposed to only on pairs of elements. We show that this approach yields an O(logn)-approximation when either the supply or demands are given by a graph. This result improves upon Plotkin et al.’s O(log(kn)logn)-approximation [28], where k is the number of demands, in the setting where the supply is given by a graph and the demands are given by a hypergraph. Additionally, we provide an O(min{rG,rH}log(rH)logn)-approximation for when the supply and demands are given by hypergraphs whose hyperedges are bounded in cardinality by rG and rH respectively. To establish these results we provide an O(logn)-distortion 𝓵1 embedding for the class of diversities known as diameter diversities. This improves upon Bryant and Tupper’s O((logn)^2)-distortion embedding [31]. The smallest known distortion with which an arbitrary diversity can be embedded into 𝓵1 is O(n). We show that for any ε > 0 and any p > 0, there is a family of diversities which cannot be embedded into 𝓵1 in polynomial time with distortion smaller than O(n^(1−ε)) based on querying the diversities on sets of cardinality at most O((logn)ˆp), unless P = NP. This disproves (an algorithmic refinement) of Bryant and Tupper’s conjecture that there exists an O(√n)-distortion 𝓵1 embedding based off a diversity’s induced metric. In addition, we demonstrate via hypergraph cut sparsifiers that it is sufficient to develop a low-distortion embedding for diversities induced by sparse hypergraphs for the purpose of obtaining good approximations for the sparsest cut in hypergraphs.
КЛИНИКО-ИММУНОЛОГИЧЕСКИЕ ОСОБЕННОСТИ РАЗВИТИЯ ОСТРОЙ РЕНАЛЬНОЙ  ПАТОЛОГИИ  У ДЕТЕЙ НА ФОНЕ COVID-19
Creators: name: Исмоилова, З.А.
name: Ахмеджанова, Н.И.
Publisher: name: Zenodo
Year: 2023

description: Мы определили, что нарушение цитокинового профиля сыворотки крови было более выражено у больных имевших в анамнезе Covid-19, что связано с наличием цитокинового шторма при острой почечной патологии возникающего из-за воспаления почек, повышенной проницаемости сосудов, потери жидкости, внутрибрюшной гипертензии, гиповолемии и последующего шока.