cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Tunneling-percolation origin of nonuniversality: theory and experiments
Creators: name: Vionnet-Menot, S.
name: Grimaldi, C.
name: Maeder, T.
name: Straessler, S.
name: Ryser, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A vast class of disordered conducting-insulating compounds close to the percolation threshold is characterized by nonuniversal values of transport critical exponent t, in disagreement with the standard theory of percolation which predicts t = 2.0 for all three dimensional systems. Various models have been proposed in order to explain the origin of such universality breakdown. Among them, the tunneling-percolation model calls into play tunneling processes between conducting particles which, under some general circumstances, could lead to transport exponents dependent of the mean tunneling distance a. The validity of such theory could be tested by changing the parameter a by means of an applied mechanical strain. We have applied this idea to universal and nonuniversal RuO2-glass composites. We show that when t > 2 the measured piezoresistive response Γ, i. e., the relative change of resistivity under applied strain, diverges logarithmically at the percolation threshold, while for t = 2, Γdoes not show an appreciable dependence upon the RuO2 volume fraction. These results are consistent with a mean tunneling dependence of the nonuniversal transport exponent as predicted by the tunneling-percolation model. The experimental results are compared with analytical and numerical calculations on a random-resistor network model of tunneling-percolation.
description: 13 pages, 12 figures
Molecular Mean-Field Theory of Ionic Solutions: a Poisson-Nernst-Planck-Bikerman Model
Creators: name: Liu, Jinn-Liang
name: Eisenberg, Bob
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We have developed a molecular mean-field theory -- fourth-order Poisson-Nernst-Planck-Bikerman theory -- for modeling ionic and water flows in biological ion channels by treating ions and water molecules of any volume and shape with interstitial voids, polarization of water, and ion-ion and ion-water correlations. The theory can also be used to study thermodynamic and electrokinetic properties of electrolyte solutions in batteries, fuel cells, nanopores, porous media including cement, geothermal brines, the oceanic system, etc. The theory can compute electric and steric energies from all atoms in a protein and all ions and water molecules in a channel pore while keeping electrolyte solutions in the extra- and intracellular baths as a continuum dielectric medium with complex properties that mimic experimental data. The theory has been verified with experiments and molecular dynamics data from the gramicidin A channel, L-type calcium channel, potassium channel, and sodium/calcium exchanger with real structures from the Protein Data Bank. It was also verified with the experimental or Monte Carlo data of electric double-layer differential capacitance and ion activities in aqueous electrolyte solutions. We give an in-depth review of the literature about the most novel properties of the theory, namely, Fermi distributions of water and ions as classical particles with excluded volumes and dynamic correlations that depend on salt concentration, composition, temperature, pressure, far-field boundary conditions etc. in a complex and complicated way as reported in a wide range of experiments. The dynamic correlations are self-consistent output functions from a fourth-order differential operator that describes ion-ion and ion-water correlations, the dielectric response (permittivity) of ionic solutions, and the polarization of water molecules with a single correlation length parameter.
description: 18 figures
Varieties generated by completions
Creators: name: Andréka, H.
name: Németi, I.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03C05 06E25 03G15 03C13 06A06 06B23 06A11

description: We prove that persistently finite algebras are not created by completions of algebras, in any ordered discriminator variety. A persistently finite algebra is one without infinite simple extensions. We prove that finite measurable relation algebras are all persistently finite. An application of these theorems is that the variety generated by the completions of representable relation algebras does not contain all relation algebras. This answers Problem 1.1(1) from a paper by R. Maddux in the negative. At the same time, we confirm the suggestion in that paper that the finite maximal relation algebras constructed in a joint paper by M. Frias and R. Maddux are not in the variety generated by the completions of representable relation algebras. We prove that there are continuum many varieties between the variety generated by the completions of representable relation algebras and the variety of relation algebras.
Gender differences in infant and child mortality: Estimation and identification of countries with outlying levels or trends
Creators: name: Alkema, Leontine
name: Chao, Fengqing
name: Sawyer, Cheryl Chriss
Publisher: name: figshare
Year: 2020
Subjects: subject: 160399 Demography not elsewhere classified
subject: FOS: Sociology
subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences
subject: 10401 Applied Statistics
subject: FOS: Mathematics

description: This conference paper was presented on Aug 30th, 2013, in the XXVII IUSSP International Population Conference, Busan, Republic of Korea.
Under natural circumstances, the ratio of the male to female under-five mortality rate is greater than one. However, deprivation of girls’ access to health care or proper nutrition could lead to distorted ratios of under-five mortality. Monitoring of mortality by sex is challenging because of issues with data availability and quality. Moreover, the sex ratio is expected to vary with under-five mortality, which makes it challenging to define “expected levels”. We present a Bayesian model to estimate the sex ratio of under-five mortality for all countries. In addition, we estimate the relative difference between national sex ratios and expected sex ratios based on the global relation between mortality and sex ratios. All estimates include an uncertainty assessment to enable assessments of whether differences between countries or within countries over time are significant or highly uncertain.
Non-Commutative Corrections to the MIC-Kepler Hamiltonian
Creators: name: Khetselius, Dennis
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Non-commutative corrections to the MIC-Kepler System (i.e. hydrogen atom in the presence of a magnetic monopole) are computed in Cartesian and parabolic coordinates. Despite the fact that there is no simple analytic expression for non-commutative perturbative corrections to the MIC-Kepler spectrum, there is a term that gives rise to the linear Stark effect which didn't exist in the standard hydrogen model.
description: 5 pages
Some exact results on $4$-cycles: stability and supersaturation
Creators: name: He, Jialin
name: Ma, Jie
name: Yang, Tianchi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Extremal problems on the $4$-cycle $C_4$ played a heuristic important role in the development of extremal graph theory. A fundamental theorem of Füredi states that the Turán number $ex(q^2+q+1, C_4)\leq \frac12 q(q+1)^2$ holds for every $q\geq 14$, which matches with the classic construction of Erdős-R{é}nyi-Sós and Brown from finite geometry for prime powers $q$.
 Very recently, we obtained the first stability result on Füredi's theorem, by showing that for large even $q$, every $(q^2+q+1)$-vertex $C_4$-free graph with more than $\frac12 q(q+1)^2-0.2q$ edges must be a spanning subgraph of a unique polarity graph. Using new technical ideas in graph theory and finite geometry, we strengthen this by showing that the same conclusion remains true if the number of edges is lowered to $\frac12 q(q+1)^2-\frac12 q+o(q)$. Among other applications, this gives an immediate improvement on the upper bound of $ex(n,C_4)$ for infinitely many integers $n$.
 A longstanding conjecture of Erdős and Simonovits states that every $n$-vertex graph with $ex(n,C_4)+1$ edges contains at least $(1+o(1))\sqrt{n}$ 4-cycles. We proved an exact result and confirmed Erdős-Simonovits conjecture for infinitely many integers $n$. As the second main result of this paper, we further characterize all extremal graphs for which achieve the $\ell$th least number of copies of $C_4$ for any fixed positive integer $\ell$. This can be extended to more general settings and provides enhancements on the understanding of the supersaturation problem of $C_4$.
The HST/ACS Grism Parallel Survey: II. First Results and a Catalog of Faint Emission-Line Galaxies at z < 1.6
Creators: name: Drozdovsky, Igor
name: Yan, Lin
name: Chen, Hsiao-Wen
name: Stern, Daniel
name: Kennicutt, Robert
name: Spinrad, Hyron
name: Dawson, Steve
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first results from the HST/ACS Grism Parallel Survey, a large program obtaining deep, slitless ACS grism spectroscopy of high-latitude HST parallel fields. We report on 11 high Galactic latitude fields here, each with grism integration times >12 ks. We identify 601 compact emission line galaxies at z < 1.6, reaching emission lines to a flux limit of > 5 E-18 ergs/cm^2/s (3 sigma). We determine redshifts by cross correlation of the target spectra with template spectra, followed by visual inspection. We measure star formation rates from the observed [OII] 3727, [OIII] 5007 and Halpha line fluxes. Follow-up observations with the Keck telescope of one of the survey fields confirms our classification and redshifts with sigma(z)~0.02. This is one of the deepest emission line surveys to date, covering a total area of 121 arcmin^2. The rough estimate of the co-moving number density of emission-line galaxies in our survey at 0.3 < z < 1.3 is ~4.5 E-3 h^{-3}_70 Mpc^{-3}. We reach deeper into the emission-line luminosity function than either the STIS or NICMOS grism parallel surveys, finding an apparent space density of emission line galaxies several times higher than those surveys. Because of the ACS high spatial resolution, our survey is very sensitive to faint, compact galaxies with strong emission lines and weak continua. The ACS grism survey provides the co-moving star formation density at z < 1.6 at a high level of completeness.
description: 20 pages, 12 figures, Accepted to the Astronomical Journal, Also available at: http://www.astro.spbu.ru/staff/dio/ACS_G800L/ACS_G800L.html
Nanoplasmonic Laser Fusion. Response to Földes and Pokol -- Letter to the Editor
Creators: name: Csernai, László P.
name: Kroó, Norbert
name: Papp, István
name: Strottman, Daniel D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Földes and Pokol in their letter "Inertial fusion without compression does not work either with or without nanoplasmonics" criticized our works \cite{CS2015,CKP2018}. Here we refute their argumentation. Our proposed improvement is the combination of two basic research discoveries: (i) The possibility of detonations on space-time hyper-surfaces with time-like normal (i.e. simultaneous detonation in a whole volume) and (ii) to increase the ignition volume to the whole target, by regulating the laser light absorption using nanoantennas. These principles can be realized in an in-line, one dimensional configuration, in the simplest way with two opposing laser beams as in particle colliders \cite{CsEA2020,Bonasera2019}.
Semiclassical and Quantum Field Theoretic Bounds for Traversable Lorentzian Stringy Wormholes
Creators: name: Nandi, Kamal Kanti
name: Zhang, Yuan-Zhong
name: Kumar, K. B. Vijaya
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A lower bound on the size of a Lorentzian wormhole can be obtained by semiclassically introducing the Planck cut-off on the magnitude of tidal forces (Horowitz-Ross constraint). Also, an upper bound is provided by the quantum field theoretic constraint in the form of the Ford-Roman Quantum Inequality for massless minimally coupled scalar fields. To date, however, exact static solutions belonging to this scalar field theory have not been worked out to verify these bounds. To fill this gap, we examine the wormhole features of two examples from the Einstein frame description of the vacuum low energy string theory in four dimensions which is the same as the minimally coupled scalar field theory. Analyses in this paper support the conclusion of Ford and Roman that wormholes in this theory can have sizes that are indeed only a few order of magnitudes larger than the Planck scale. It is shown that the two types of bounds are also compatible. In the process, we point out a "wormhole" analog of naked black holes.
description: 15 pages
0 from Idiosyncratic learning performance in flies
Creators: name: Smith, Matthew
name: Honegger, Kyle S.
name: Turner, Glenn
name: de Bivort, Benjamin
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Neuroscience
subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Individuals vary in their innate behaviours, even when they have the same genome and have been reared in the same environment. The extent of individuality in plastic behaviours, like learning, is less well characterized. Also unknown is the extent to which intragenotypic differences in learning generalize: if an individual performs well in one assay, will it perform well in other assays? We investigated this using the fruit fly Drosophila melanogaster, an organism long-used to study the mechanistic basis of learning and memory. We found that isogenic flies, reared in identical laboratory conditions, and subject to classical conditioning that associated odorants with electric shock, exhibit clear individuality in their learning responses. Flies that performed well when an odour was paired with shock tended to perform well when the odour was paired with bitter taste or when other odours were paired with shock. Thus, individuality in learning performance appears to be prominent in isogenic animals reared identically, and individual differences in learning performance generalize across some aversive sensory modalities. Establishing these results in flies opens up the possibility of studying the genetic and neural circuit basis of individual differences in learning in a highly suitable model organism.
UIC Official Internet Front-face & Governing Framework Concept
Creators: name: Lutalo, Joseph Willrich
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 461004
subject: Information governance, policy and ethics
classificationCode: 440708
subject: Public administration
classificationCode: 330401
subject: Community planning
classificationCode: 350707
subject: Leadership

description: This document lays down the first draft of a formal governing framework for the Internet Organization, UIC, the core Uganda Internet Community. The document is part of a plan to formalize the operations, activities and leadership of the UIC as well as help lay down the important principles to guide its expression and structure on the public Internet moving forward. This work is currently being spearheaded voluntarily, by the Think-tank at Nuchwezi.
Andreev Edge State on Semi-Infinite Triangular Lattice: Detecting the Pairing Symmetry in Na_0.35CoO_2.yH_2O
Creators: name: Pereg-Barnea, T.
name: Lin, Hsiu-Hau
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the Andreev edge state on the semi-infinite triangular lattice with different pairing symmetries and boundary topologies. We find a rich phase diagram of zero energy Andreev edge states that is a unique fingerprint of each of the possible pairing symmetries. We propose to pin down the pairing symmetry in recently discovered Na_xCoO_2 material by the Fourier-transformed scanning tunneling spectroscopy for the edge state. A surprisingly rich phase diagram is found and explained by a general gauge argument and mapping to 1D tight-binding model. Extensions of this work are discussed at the end.
description: 4 pages, 1 table, 4 figures
title: Vehicle relationism : essays on samethinking and samesaying
Creators: name: Vikesdal, Sara Kasin
Publisher: name: University of St Andrews
Year: 2019

description: This thesis is about the nature of samethinking and samesaying. These notions are broad and capture various distinct but related phenomena. I will focus on two particular understandings of ‘samethinking’, and on one particular understanding of ‘samesaying’. Let me address samethinking first. On the first understanding of ‘samethinking’, samethinking occurs whenever two thoughts concern the same referent. We may distinguish between two different ways in which this can occur. First, there are cases in which the sameness of reference is manifest to the subject. Take for instance the two beliefs BOB DYLAN IS A MUSICIAN and BOB DYLAN WON A NOBEL PRIZE. In such cases, the sameness of reference is transparent to the thinker in such a way that she may combine the two beliefs in an inference and conclude directly from these two beliefs alone that a musician won a Nobel Prize. Second, there are cases in which two thoughts concern the same referent, but where the sameness of reference is not manifest to the subject. Take for instance the two thoughts BOB DYLAN IS A MUSICIAN and ROBERT ZIMMERMAN WON A NOBEL PRIZE. ‘Robert Zimmerman’ is Bob Dylan’s birth name, so the two thoughts concern the same individual. However, unless the thinker has a further belief to the effect that Bob Dylan is Robert Zimmerman, she may not rationally infer from these beliefs that a musician won a Nobel Prize. We see, then, that two pairs of thoughts that are referentially equivalent may nonetheless play different roles in cognition. In this thesis, I offer a novel account of how to understand the difference between cases of samethinking such as those above. The second understanding of ‘samethinking’ that I will discuss in this thesis is a broader phenomenon. Two thoughts, typically entertained by distinct individuals or the same individual at different times, can be said to concern the same subject matter despite differing in their overall semantic properties. Likewise, it seems that two utterances may concern the same topic despite differing in their overall semantic properties. Consider for instance someone uttering the sentence “Whales are fish” in the 18th century, where such an utterance would generally be regarded as true. If someone today were to utter the same sentence, however, we would regard it as false. We have reason to think that the meaning of the term ‘fish’ has changed between then and now. Even if this is the case, it seems as though the 18th-century person and the current day individual are, in an interesting way, talking about the same topic when uttering the sentence. This is the notion of ‘samesaying’ I will address in this thesis. I shed light on what it is for two thoughts or two utterances to be the same in this way.
Consequences of BSE disease outbreaks in the Canadian beef industry
Creators: name: Stephen Clark, J.
name: Cechura, Lukas
name: Stephen Clark, J.
name: Cechura, Lukas
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Beef industry
subject: price transmission
subject: BSE
subject: market power
subject: parameter instability
subject: cointegration with structural break

description: This study examines farm to wholesale prices spreads to measure the impact of the BSE disease outbreak on the Canadian beef industry. The study uses structure break tests developed by Gregory and Hansen (1996) and Hansen (1992) examine possible breaks within co integrating relationships. The study finds evidence that the industry began realignment as a result of the UK BSE disease outbreak, and the Canadian BSE disease outbreak was simply the largest realignment of the process beginning with the UK disease outbreak. However, the only statistically significant break was the BSE disease outbreak itself in May 2003. Stability was not restored until the border was reopened in 2005. Specific results indicated that the processing sector exploited the border closure in May 2003 to enhance its market power and that the system returned to a competitive one after the border re-opened in July 2005.
Is there any future for cash crops in developing countries? The case of vanilla.
Creators: name: Pokorna, Irena
name: Smutka, Lubos
name: Pokorna, Irena
name: Smutka, Lubos
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Cash crops
subject: vanilla
subject: international trade
subject: RCA.

description: A generally used term for easy marketable commodities usually with high prices is cash crops As a result of it these commodities are produced by many developing and especially least developed countries (LDC). These crops have witnessed fluctuation in prices during the last decade. We can suppose that these products would be the domain of developing countries nevertheless the opposite is true. Vanilla is a very good example of those products especially because just very few producers exist. We can suppose that vanilla trade would be the sphere of very few producers and beside that the agents would deal mostly with the demand site on the international market. However, the international vanilla market shows slight differences. Nevertheless, it can be grown just in very few areas. Madagascar belongs between the most well known producers. The aim of this paper is to analyse the international vanilla trade with regards to the production and consumption side and specifics of cash crops in general. International vanilla trade is even higher than the production itself. These results indicate that vanilla is being re-exported and the trade is not just a normal commodity trade but being use as a investment instrument as well.
Evolved Massive Stars at Low-metallicity II. Red Supergiant Stars in the Small Magellanic Cloud
Creators: name: Yang, Ming
name: Bonanos, Alceste Z.
name: Jiang, Bi-Wei
name: Gao, Jian
name: Gavras, Panagiotis
name: Maravelias, Grigoris
name: Wang, Shu
name: Chen, Xiao-Dian
name: Tramper, Frank
name: Ren, Yi
name: Spetsieri, Zoi T.
name: Xue, Meng-Yao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the most comprehensive RSG sample for the SMC up to now, including 1,239 RSG candidates. The initial sample is derived based on a source catalog for the SMC with conservative ranking. Additional spectroscopic RSGs are retrieved from the literature, as well as RSG candidates selected from the inspection of CMDs. We estimate that there are in total $\sim$ 1,800 or more RSGs in the SMC. We purify the sample by studying the infrared CMDs and the variability of the objects, though there is still an ambiguity between AGBs and RSGs. There are much less RSGs candidates ($\sim$4\%) showing PAH emission features compared to the Milky Way and LMC ($\sim$15\%). The MIR variability of RSG sample increases with luminosity. We separate the RSG sample into two subsamples ("risky" and "safe") and identify one M5e AGB star in the "risky" subsample. Most of the targets with large variability are also the bright ones with large MLR. Some targets show excessive dust emission, which may be related to previous episodic mass loss events. We also roughly estimate the total gas and dust budget produced by entire RSG population as $\rm \sim1.9^{+2.4}_{-1.1}\times10^{-6}~M_{\odot}/yr$ in the most conservative case. Based on the MIST models, we derive a linear relation between $T_{\rm eff}$ and observed $\rm J-K_S$ color with reddening correction for the RSG sample. By using a constant bolometric correction and this relation, the Geneva evolutionary model is compared with our RSG sample, showing a good agreement and a lower initial mass limit of $\sim$7 $\rm M_\odot $ for the RSG population. Finally, we compare the RSG sample in the SMC and the LMC. Despite the incompleteness of LMC sample in the faint end, the result indicates that the LMC sample always shows redder color (except for the $\rm IRAC1-IRAC2$ and $\rm WISE1-WISE2$ colors due to CO absorption) and larger variability than the SMC sample.
description: 18 pages, 12 figures, A&A accepted
Combinatorial model categories are equivalent to presentable quasicategories
Creators: name: Pavlov, Dmitri
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Topology (math.AT)
subject: Category Theory (math.CT)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 55U35, 18N40 (Primary) 18N60, 18N50, 18N10 (Secondary)

description: We establish a Dwyer-Kan equivalence of relative categories of combinatorial model categories, presentable quasicategories, and other models for locally presentable (infinity,1)-categories. This implies that the underlying quasicategories of these relative categories are also equivalent.
description: 35 pages. Comments and questions are welcome. v2: Minor corrections and improvements. v3: Identical to the journal version except for formatting and style
Exploring students' understanding of median
Creators: name: Amiruzzaman, Md
name: Kosko, Karl W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: History and Overview (math.HO)
subject: Physics Education (physics.ed-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This paper explores middle-grade students' conceptions of median. Describes, where and why they struggle and provides learning trajectory to improve their understanding.
description: 4 pages, 4 figures
The challenge to reliably measure the general relativistic Lense-Thirring effect with a few percent accuracy
Creators: name: Iorio, Lorenzo
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: Geophysics (physics.geo-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: In this paper we critically analyze the so far performed and proposed tests for measuring the general relativistic Lense-Thirring effect in the gravitational field of the Earth with some of the existing accurately tracked artificial satellites. The impact of the 2nd generation GRACE-only EIGEN-GRACE02S Earth gravity model and of the 1st CHAMP+GRACE+terrestrial gravity combined EIGEN-CG01C Earth gravity model is discussed. The role of the proposed LARES is discussed as well.
description: LaTeX2e, no figures, no tables, 12 pages, 35 references
Origin of robust exceptional points: a restricted bulk zero mode
Creators: name: Rivero, Jose D. H.
name: Ge, Li
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Recently a type of robust exceptional points was found that is insensitive to the coupling disorder in the bulk. Here we show that a disparity emerges when the number of coupled cavities in this one-dimensional array changes from even to odd. The robust exceptional point only exists in the former case, whereas the location of the exceptional point in the latter depends inversely on the size of the cavity array and is subjected to coupling disorder in the bulk. We further show that the exceptional points in these two cases are second and third order, respectively. We elucidate the origin of the robust EP as a restricted bulk zero mode, which shares the same robustness against coupling disorder and has a finite amplitude adjacent to the boundary. This finding enables us to identify robust EPs in higher dimensional systems reliably, which can exist in the presence of either sublattice symmetry or the non-Hermitian particle-hole symmetry evolved from it.
Chronology Protection in anti-de Sitter
Creators: name: Caldarelli, Marco M.
name: Klemm, Dietmar
name: Silva, Pedro J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider 1/2 BPS excitations of AdS(5)xS(5) geometries in type IIB string theory that can be mapped into free fermion configurations according to the prescription of Lin, Lunin and Maldacena (LLM). It is shown that whenever the fermionic probability density exceeds one or is negative, closed timelike curves appear in the bulk. A violation of the Pauli exclusion principle in the phase space of the fermions is thus intimately related to causality violation in the dual geometries.
description: 4 pages, 1 figure. v2: clarifications on the proof and comments on curvature singularity added. v3: final version to appear in Class. Quantum Grav
Anytime Parallel Tempering
Creators: name: d'Avigneau, A. Marie
name: Singh, S. S.
name: Murray, L. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences
subject: 62-08, 62F15

description: Developing efficient MCMC algorithms is indispensable in Bayesian inference. In parallel tempering, multiple interacting MCMC chains run to more efficiently explore the state space and improve performance. The multiple chains advance independently through local moves, and the performance enhancement steps are exchange moves, where the chains pause to exchange their current sample amongst each other. To accelerate the independent local moves, they may be performed simultaneously on multiple processors. Another problem is then encountered: depending on the MCMC implementation and inference problem, local moves can take a varying and random amount of time to complete. There may also be infrastructure-induced variations, such as competing jobs on the same processors, which arises in cloud computing. Before exchanges can occur, all chains must complete the local moves they are engaged in to avoid introducing a potentially substantial bias (Proposition 2.1). To solve this issue of randomly varying local move completion times in multi-processor parallel tempering, we adopt the Anytime Monte Carlo framework of Murray et al. (2016): we impose real-time deadlines on the parallel local moves and perform exchanges at these deadlines without any processor idling. We show our methodology for exchanges at real-time deadlines does not introduce a bias and leads to significant performance enhancements over the naïve approach of idling until every processor's local moves complete. The methodology is then applied in an ABC setting, where an Anytime ABC parallel tempering algorithm is derived for the difficult task of estimating the parameters of a Lotka-Volterra predator-prey model, and similar efficiency enhancements are observed.
description: 34 Pages, 10 Figures
High-speed metamagnetic resistive switching of FeRh through Joule heating
Creators: name: Blumenschein, Nicholas A.
name: Stephen, Gregory M.
name: Cress, Cory D.
name: LaGasse, Samuel W.
name: Hanbicki, Aubrey T.
name: Bennett, Steven P.
name: Friedman, Adam L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Due to its proximity to room temperature and demonstrated high degree of temperature tunability, the metamagnetic ordering transition in FeRh is attractive for novel high-performance computing devices seeking to use magnetism as the state variable. We demonstrate electrical control of the transition via Joule heating in FeRh wires. Finite element simulations based on abrupt state transition within each domain result in a globally smooth transition that agrees with the experimental findings and provides insight into the thermodynamics involved. We measure a 150 K decrease in transition temperature with currents up to 60 mA, limited only by the dimensions of the device. The sizeable shift in transition temperature scales with current density and wire length, suggesting the absolute resistance and heat dissipation of the substrate are also important. The FeRh phase change is evaluated by pulsed I-V using a variety of bias conditions. We demonstrate high speed (~ ns) memristor-like behavior and report device performance parameters such as switching speed and power consumption that compare favorably with state-of-the-art phase change memristive technologies.
description: 35 pages, 9 figures
Separation of two regimes in a disordered boson Hubbard Model
Creators: name: Lee, Ji-Woo
name: Cha, Min-Chul
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the insulator-to-superfluid transition in a two-dimensional disordered boson Hubbard model at zero temperature for intermediate strength of disorder at commensurate density. Via Monte Carlo calculations of the correlation functions in the integer current representation of the model, we obtain the dynamical critical exponent $z=1.5 \pm 0.1$, supporting the multi-critical behavior separating the strong and weak disorder regimes. Investigating the density profile, we suggest that the density fluctuations due to the particle-hole excitations drive the transition in the weak disorder regime.
description: to be published in PRB
50th Anniversary Recipe Book
Creators: name: Oregon Nurses Association
Publisher: name: Unknown
Year: 1949
Subjects: Cooking
Cookbooks as Topic
Food and Beverages
Oregon

description: The Oregon State Nurses’ Association 50th Anniversary Recipe Book compiles a variety of recipes that are typed, handwritten, and clipped from magazines. Containing sweet and savory recipes, this text offers resources to meet a variety of needs, including those preparing to feed a crowd (“chicken loaf for 50 people”), impress others at the holiday party (“Mary Lee Taylor’s husband-tested festive fruit cake”), or enliven a side dish (“unusual French dressing”). Though many of these recipes may seem old fashioned for contemporary home cooks, they allow the reader a glimpse into Oregon nurses’ kitchens and the social gatherings they may have attended.
Generalized Parton Distributions and Transversity in Nucleons and Nuclei
Creators: name: Liuti, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present an exploratory study using generalized parton distributions of several observables related to transverse degrees of freedom in hadronic structure -- the nucleon transverse momentum, the transverse radius, or impact parameter, and the momentum transfer, $t$, dependence of the longitudinal variable $x$ -- in both nucleons and nuclei.
description: 6 pages, 3 figures, Talk presented at "Baryons 04", October 25th-30th, 2004, Palaiseau, France
Neutrophil counts and the risk of new-onset proteinuria in hypertensive patients
Creators: name: Zhuxian Zhang
name: Mengyi Liu
name: Yuanyuan Zhang
name: Zhou, Chun
name: Panpan He
name: Li, Huan
name: Jianping Li
name: Zhang, Yan
name: Liang, Min
name: Binyan Wang
name: Xu, Xin
name: Xiaobin Wang
name: Huo, Yong
name: Hou, Fan Fan
name: Nie, Jing
name: Xiping Xu
name: Xianhui Qin
Publisher: name: figshare
Year: 2020
Subjects: subject: 110312 Nephrology and Urology
subject: FOS: Clinical medicine

description: Supplemental Material
Analysis of Development of Investments in the Agricultural Sector of the Czech Republic
Creators: name: Zidkova, Dana
name: Rezbova, Helena
name: Rosochatecka, Eva
name: Zidkova, Dana
name: Rezbova, Helena
name: Rosochatecka, Eva
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Financial Economics
subject: investment activities
subject: agricultural sector
subject: gross fixed capital formation
subject: requirements for investments

description: The aim of this article is to analyse the investment activities realized in the agricultural sector of the Czech Republic during the period of 1998-2009. The study focuses on the development of the volume of investments in agriculture, their composition and economic efficiency. The analysis is based on data from the Aggregate Agricultural Account drawn up by the Czech Statistical Office (Český statistický úřad, ČSÚ). Investment activity is studied on the basis of such indicators as the gross fixed capital formation, net fixed capital formation, gross investment rate, requirements for investments. The impact of selected factors influencing the gross fixed capital formation and its composition is evaluated
Preservice mathematics teachers understanding of mode
Creators: name: Amiruzzaman, Md
name: Kosko, Karl W.
name: Amiruzzaman, Stefanie
Publisher: name: arXiv
Year: 2020
Subjects: subject: History and Overview (math.HO)
subject: Physics Education (physics.ed-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This paper explores two preservice mathematics teachers' understanding of mode. Participants' initial understanding and understanding following use of an interactive virtual manipulative is examined. Findings suggest that participants initially operated with less-effective definitions of mode. Preservice teachers' developed understanding following a learning trajectory is discussed.
description: 4 pages, 2 figures
Are Nursing Students’ Early Course and Perceived Performance Related to Their Final and Actual Course Performance?
Creators: name: Oducado, Ryan Michael
Publisher: name: figshare
Year: 2020
Subjects: subject: 111099 Nursing not elsewhere classified
subject: FOS: Health sciences

description: Background: Assessing the academic performance of students is imperative for nursing educators. While it is commonly accepted that performance in quizzes is linked with final examination performance, little published empirical data is available among nursing student samples.Purpose: The purpose of this study was to determine the relationship between performance in regular short lecture quizzes and long quiz on the final examination performance of nursing students in a nursing course. Likewise, this study ascertained whether there is a significant relationship between perceived performance and actual performance in the final examination of the course.Methods: A descriptive-correlational study design was used. All 138 second-year nursing students enrolled in the Community Health Nursing course were included in this study. Grades in short quizzes, long test, and final examination were analyzed, and a one item global scale was utilized to determine students’ perceived performance in the final examination. Pearson’s r was employed to determine the relationship between variables.Results: Results revealed that performance in regular short lecture quizzes (p=0.000) and long quiz (p=0.000) were significantly correlated with final examination performance. Moreover, there was a significant relationship between perceived performance and actual performance in the final examination (p=0.000).Conclusion: This study suggests that early performance in the lecture course can significantly influence students’ performance in the final assessment of the course. Nurse educators are encouraged to be proactive in identifying students who are at risk of performing poorly early in the course so that prompt remediation and guidance may be provided to students who are not performing well.
Optically identified BL Lacertae objects from the Sloan Digital Sky Survey
Creators: name: Collinge, Matthew J.
name: Strauss, Michael A.
name: Hall, Patrick B.
name: Ivezic, Zeljko
name: Munn, Jeffrey A.
name: Schlegel, David J.
name: Zakamska, Nadia L.
name: Anderson, Scott F.
name: Harris, Hugh C.
name: Richards, Gordon T.
name: Schneider, Donald P.
name: Voges, Wolfgang
name: York, Donald G.
name: Margon, Bruce
name: Brinkmann, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a sample of 386 BL Lacertae (BL Lac) candidates identified from 2860 deg^2 of the Sloan Digital Sky Survey (SDSS) spectroscopic database. The candidates are primarily selected to have quasi-featureless optical spectra and low proper motions as measured from SDSS and USNO-B positions; however, our ability to separate Galactic from extragalactic quasi-featureless objects (QFOs) on the basis of proper motion alone is limited by the lack of reliable proper motion measurements for faint objects. Fortunately, high proper motion QFOs, mostly DC white dwarfs, populate a well defined region of color space, approximately corresponding to blackbodies with temperatures in the range 7000-12000 K. QFOs with measurable redshifts or X-ray or radio counterparts (i.e., evidence of an extragalactic/AGN nature) loosely follow a track in color space that corresponds to power-law continua plus host galaxy starlight, with typical power-law slopes in the range 1
description: 42 pages, 11 figures (4 in color), uses aastex.cls. To appear in the June 2005 edition of AJ. Full tables are temporarily available from http://www.astro.princeton.edu/~collinge/sdss_bllac/ and will be published electronically. Summary of changes: 1) improved SDSS/USNO-B proper motion treatment; 2) improved discussion of multiwavelength properties
Implementation of subontology of Planning and control for business analysis domain
Creators: name: Atanasova, Irena
name: Atanasova, Irena
Publisher: name: Unknown
Year: 2011
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: ontology
subject: forecasting
subject: assessment
subject: Protege
subject: implementation

description: Ontologies are at the heart of the semantic web. They define the concepts and relationships that make global interoperability possible. However, as these ontologies grow in size they become more and more difficult to create, use, understand, maintain, transform and classify. As ontologies become common in more applications and as those applications become larger and longer-lived, it is becoming increasingly common for ontologies to be developed in different area of public sector of economics. Ontologies present special challenges to the problem of conceptual modeling. This paper describes the process of the implementation of a subontology of forecasting and evaluations for business analysis domain in order to develop an easy and correct way to find the needed statistical information in a knowledge base.
Bounded light cone and robust topological order out of equilibrium
Creators: name: Zeng, Yu
name: Hamma, Alioscia
name: Zhang, Yu-Ran
name: Cao, Jun-Peng
name: Fan, Heng
name: Liu, Wu-Ming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The ground state degeneracy of topologically ordered gapped Hamiltonians is the bedrock for self-correcting quantum memories, which are unfortunately not stable away from equilibrium even at zero temperature. This plague precludes practical robust self-correction since stability at zero temperature is a prerequisite for finite-temperature robustness. In this work, we show that the emergence of a bounded light cone renders the unitary time evolution a quasi-adiabatic continuation that preserves topological order, with the initial ground space retaining its macroscopic distance at all times as a quantum code. We also show how bounded light cones can emerge through suitable perturbations in Kitaev's toric code and honeycomb model. Our results suggest that topological orders and self-correcting quantum memories can be dynamically robust at zero temperature.
description: 7+5 pages, 4+3 figures. the Supplemental Material is updated. In version 4, we show the emergence of a bounded light cone in the disordered Kitaev's honeycomb model
A renormalization group approach to non-Hermitian topological quantum criticality
Creators: name: Zhou, Boran
name: Wang, Rui
name: Wang, Baigeng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Critical transition points between symmetry-broken phases are characterized as fixed points in the renormalization group (RG) theory. We show that, following the standard Wilsonian procedure that traces out the large momentum modes, this well known fact can break down in non-Hermitian systems. Based on non-Hermitian Su-Schrieffer-Hegger (SSH)-type models, we propose a real-space decimation scheme to study the criticality between the topological and trivial phase. We provide concrete examples and an analytic proof to show that the real-space scheme perfectly overcomes the insufficiency of the standard method, especially in the sense that it always preserves the system at criticality as fixed points under RG. The proposed method can also greatly simplify the search of critical points for complicated non-Hermitian models by ruling out the irrelevant operators. These results pave the way towards more advanced RG-based techniques for the interacting non-Hermitian quantum systems.
Heat-capacity anomalies in the presence of high magnetic fields in the spin-chain compound, Ca3Co2O6
Creators: name: Sampathkumaran, E. V.
name: Hiroi, Z.
name: Rayaprol, S.
name: Uwatoko, Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Heat-capacity behavior in the presence of externally applied magnetic field (H) up to 140 kOe is investigated (2-35 K) for the quasi-1-dimensional compound, Ca3Co2O6, believed to order magnetically with the so-called partially disordered anti-ferromagnetic structure. The results reveal that there is a shift of the magnetic transition occurring around 24 K to a marginally higher temperature (by 0.5 K) as H is increased from 10 to 30 kOe, uncharacteristic of anti-ferromagnets. No peak attributable to magnetic ordering could be observed in the entire field range of investigation in the vicinity of the second magnetic transition, occurring around 10 K. However, hysteresis studies of H-dependence of C indicate a subtle change in the magnetic structure as the T is lowered across 10 K.
description: J. Magn. Magn. Mater. (Letters)