cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Auxiliary nRules of Quantum Mechanics
Creators: name: Mould, Richard A
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Standard quantum mechanics makes use of four auxiliary rules that allow the Schrodinger solutions to be related to laboratory experience, such as the Born rule that connects square modulus to probability. These rules (here called the sRules) lead to some unacceptable results. They do not allow the primary observer to be part of the system. They do not allow individual observations (as opposed to ensembles) to be part of the system. They make a fundamental distinction between microscopic and macroscopic things, and they are ambiguous in their description of secondary observers such as Schrodingers cat. The nRules are an alternative set of auxiliary rules that avoid the above difficulties. In this paper we look at a wide range of representative experiments showing that the nRules adequately relate the Schrodinger solutions to empirical experience. This suggests that the sRules should be abandoned in favor of the more satisfactory nRules, or a third auxiliary rule-set called the oRules. Keywords: brain states, consciousness, decoherence, epistemology, measurement, ontology, stochastic, state reduction, wave collapse.
description: 27 pages, 5 figures
Twist-3 distribution amplitudes of the pion and kaon from the QCD sum rules
Creators: name: Huang, Tao
name: Zhou, Ming-Zhen
name: Wu, Xing-Hua
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Twist-3 distribution amplitudes of the pion and kaon are studied in this paper. We calculate the fist several moments for the twist-3 distribution amplitudes (ϕ_{p,σ}^πand ϕ_{p,σ}^K) of the pion and kaon by applying the QCD sum rules. Our results show that, (i) the first three moments of ϕ_p^K and the first two moments of ϕ_p^πand ϕ_σ^{π,K} of the pion and kaon can be obtained with 30% uncertainty; (ii) the fourth moment of the ϕ_p^πand the second moment of the ϕ_σ^K can be obtained when the uncertainty are relaxed to 35%; (iii) the fourth moment of the ϕ_σ^πcan be obtained only when the uncertainty are relaxed to 40%; (iv) we have m_{0π}^p=1.10\pm 0.08 {\rm GeV} and m_{0K}^p=1.25\pm 0.15 {\rm GeV} after including the α_s-corrections to the perturbative part. These moments will be helpful for constructing the twist-3 wave functions of the pion and kaon.
description: 18 pages, 10 figures, one more subsection added
Cellular visualization of G-quadruplex RNA via fluorescence- lifetime imaging microscopy.
Creators: name: Robinson, Jenna
name: Stenspil, Stine G
name: Maleckaite, Karolina
name: Bartlett, Molly
name: Di Antonio, Marco
name: Vilar, Ramon
name: Kuimova, Marina K
Publisher: name: The Francis Crick Institute
Year: 2024
Subjects: classificationCode: Signalling & Oncogenes
subject: Signalling & Oncogenes
classificationCode: Metabolism
subject: Metabolism
classificationCode: Computational & Systems Biology
subject: Computational & Systems Biology
classificationCode: Genome Integrity & Repair
subject: Genome Integrity & Repair
classificationCode: Human Biology & Physiology
subject: Human Biology & Physiology
classificationCode: Model organisms
subject: Model organisms

description: Over the past decade, appreciation of the roles of G-quadruplex (G4) structures in cellular regulation and maintenance has rapidly grown, making the establishment of robust methods to visualize G4s increasingly important. Fluorescent probes are commonly used for G4 detection in vitro; however, achieving sufficient selectivity to detect G4s in a dense and structurally diverse cellular environment is challenging. The use of fluorescent probes for G4 detection is further complicated by variations of probe uptake into cells, which may affect fluorescence intensity independently of G4 abundance. In this work, we report an alternative small-molecule approach to visualize G4s that does not rely on fluorescence intensity switch-on and, thus, does not require the use of molecules with exclusive G4 binding selectivity. Specifically, we have developed a novel thiazole orange derivative, TOR-G4, that exhibits a unique fluorescence lifetime when bound to G4s compared to other structures, allowing G4 binding to be sensitively distinguished from non-G4 binding, independent of the local probe concentration. Furthermore, TOR-G4 primarily colocalizes with RNA in the cytoplasm and nucleoli of cells, making it the first lifetime-based probe validated for exploring the emerging roles of RNA G4s in cellulo.
Recollements and tilting modules
Creators: name: Ma, Xin
name: Zhao, Tiwei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Let $(\mbox{mod} Λ',\mbox{mod} Λ,\mbox{mod} Λ'')$ be a recollement of module categories for artin algebras $Λ'$, $Λ$ and $Λ''$. We provide a sufficient condition such that a glued torsion pair in $\mbox{mod} Λ$ is tilting when the given two torsion pairs are tilting in $\mbox{mod} Λ'$ and $\mbox{mod} Λ''$ respectively. Using this result, we give a construction of gluing of tilting modules in $\mbox{mod} Λ$ with respect to tilting modules in $\mbox{mod} Λ'$ and $\mbox{mod} Λ''$ respectively.
description: 14 pages, accepted for publication in Communications in Algebra. arXiv admin note: text overlap with arXiv:1801.02343
Strong universality and algebraic scaling in two-dimensional Ising spin glasses
Creators: name: Jorg, T.
name: Lukic, J.
name: Marinari, E.
name: Martin, O. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: At zero temperature, two-dimensional Ising spin glasses are known to fall into several universality classes. Here we consider the scaling at low but non-zero temperature and provide numerical evidence that $η\approx 0$ and $ν\approx 3.5$ in all cases, suggesting a unique universality class. This algebraic (as opposed to exponential) scaling holds in particular for the $\pm J$ model, with or without dilutions and for the plaquette diluted model. Such a picture, associated with an exceptional behavior at T=0, is consistent with a real space renormalization group approach. We also explain how the scaling of the specific heat is compatible with the hyperscaling prediction.
Adding decoherence to the Wigner equation
Creators: name: Barletti, Luigi
name: Frosali, Giovanni
name: Giovannini, Elisa
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Starting from the detailed description of the single-collision decoherence mechanism proposed by Adami, Hauray and Negulescu, we derive a Wigner equation endowed with a decoherence term of a fairly general form. This equation is shown to contain well known decoherence models, such as the Wigner-Fokker-Planck equation, as particular cases. The effect of the decoherence mechanism on the dynamics of the macroscopic moments (density, current, energy) is illustrated by deriving the corresponding set of balance laws. The issue of large-time asymptotics of our model is addressed in the particular, although physically relevant, case of gaussian solutions. It is shown that the addition of a Caldeira-Legget friction term provides the asymptotic behaviour that one expects on the basis of physical considerations.
OutbreakFlow: Model-based Bayesian inference of disease outbreak dynamics with invertible neural networks and its application to the COVID-19 pandemics in Germany
Creators: name: Radev, Stefan T.
name: Graw, Frederik
name: Chen, Simiao
name: Mutters, Nico T.
name: Eichel, Vanessa M.
name: Bärnighausen, Till
name: Köthe, Ullrich
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: Machine Learning (cs.LG)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Mathematical models in epidemiology are an indispensable tool to determine the dynamics and important characteristics of infectious diseases. Apart from their scientific merit, these models are often used to inform political decisions and intervention measures during an ongoing outbreak. However, reliably inferring the dynamics of ongoing outbreaks by connecting complex models to real data is still hard and requires either laborious manual parameter fitting or expensive optimization methods which have to be repeated from scratch for every application of a given model. In this work, we address this problem with a novel combination of epidemiological modeling with specialized neural networks. Our approach entails two computational phases: In an initial training phase, a mathematical model describing the epidemic is used as a coach for a neural network, which acquires global knowledge about the full range of possible disease dynamics. In the subsequent inference phase, the trained neural network processes the observed data of an actual outbreak and infers the parameters of the model in order to realistically reproduce the observed dynamics and reliably predict future progression. With its flexible framework, our simulation-based approach is applicable to a variety of epidemiological models. Moreover, since our method is fully Bayesian, it is designed to incorporate all available prior knowledge about plausible parameter values and returns complete joint posterior distributions over these parameters. Application of our method to the early Covid-19 outbreak phase in Germany demonstrates that we are able to obtain reliable probabilistic estimates for important disease characteristics, such as generation time, fraction of undetected infections, likelihood of transmission before symptom onset, and reporting delays using a very moderate amount of real-world observations.
Lau, Franz / Bizer, Ernst, Reformationsgeschichte Deutschlands bis 1555 ...
Creators: name: Krüger
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 16 Nr. 4 (1967): Ökumenische Rundschau, Band 16, Heft 4
Optical spectroscopy and photometry of main-belt asteroids with a high orbital inclination
Creators: name: Iwai, Aya
name: Itoh, Yoichi
name: Terai, Tsuyoshi
name: Gupta, Ranjan
name: Sen, Asoke
name: Takahashi, Jun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We carried out low-resolution optical spectroscopy of 51 main-belt asteroids, most of which have highly-inclined orbits. They are selected from D-type candidates in the SDSS-MOC 4 catalog. Using the University of Hawaii 2.2 m telescope and the Inter-University Centre for Astronomy and Astrophysics 2 m telescope in India, we determined the spectral types of 38 asteroids. Among them, eight asteroids were classified as D-type asteroids. Fractions of D-type asteroids are 3.0+/-1.1 for low orbital inclination main-belt asteroids and 7.3+/-2.0 for high orbital inclination main-belt asteroids. The results of our study indicate that some D-type asteroids were formed within the ecliptic region between the main belt and Jupiter, and were then perturbed by Jupiter.
Chandra sample of nearby relaxed galaxy clusters: mass, gas fraction, and mass-temperature relation
Creators: name: Vikhlinin, A.
name: Kravtsov, A.
name: Forman, W.
name: Jones, C.
name: Markevitch, M.
name: Murray, S. S.
name: Van Speybroeck, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present gas and total mass profiles for 13 low-redshift, relaxed clusters spanning a temperature range 0.7-9 keV, derived from all available Chandra data of sufficient quality. In all clusters, gas temperature profiles are measured to large radii (Vikhlinin et al.) so that direct hydrostatic mass estimates are possible to nearly r_500 or beyond. The gas density was accurately traced to larger radii; its profile is not described well by a beta-model, showing continuous steepening with radius. The derived rho_tot profiles and their scaling with mass generally follow the Navarro-Frenk-White model with concentration expected for dark matter halos in LambdaCDM cosmology. In the inner region (r<0.1r_500), the gas density and temperature profiles exhibit significant scatter and trends with mass, but they become nearly self-similar at larger radii. Correspondingly, we find that the slope of the mass-temperature relation for these relaxed clusters is in good agreement with the simple self-similar behavior, M_500 ~ T^alpha, where alpha=(1.5-1.6)+-0.1, if the gas temperatures are measured excluding the central cool cores. The normalization of this M-T relation is significantly, by =~ 30%, higher than most previous X-ray determinations. We derive accurate gas mass fraction profiles, which show increase both with radius and cluster mass. The enclosed f_gas profiles within r_2500 =~ 0.4 r_500 have not yet reached any asymptotic value and are still far (by a factor of 1.5-2) from the Universal baryon fraction according to the CMB observations. The f_gas trends become weaker and its values closer to Universal at larger radii, in particular, in spherical shells r_2500
description: Submitted to ApJ. 17 emulateapj pages, 23 figures
A series of amino-2-cyclohexyl esters, their electrophysiological and antiarrhythmic effects as related to actions on ischemia-induced arrhythmias
Creators: name: Yong, Sandro Luis
Publisher: name: University of British Columbia
Year: 2009

description: Indiscriminate blockade of cardiac ion channels, in addition to affects on extracardiac tissues, is primarily responsible for cardiac side-effects associated with conventional antiarrhythmic drug use. The inactive R,R-enantiomers of cyclohexylbenzenacetamide analgesics (e.g., U - 50,488H and RSD920, Parke Davis compounds) exhibited antiarrhythmic activity independent of central or peripheral opioid activity. This pharmacophore offered a novel approach for rational drug design for the purpose of limiting drug toxicity. The cyclohexylbenzenacetamide structure was soon replaced with less cardiac-depressant ester derivatives. The present thesis examined a series of 16 structurally-related amino-2- cyclohexyl ester compounds to identify the chemical components within this series for cardiac ion channel blockade and, ultimately, antiarrhythmic actions against ischemiainduced arrhythmias. The compounds were tested against arrhythmias produced by myocardial ischemia and by electrical stimulation. Additional studies were performed in isolated rat ventricular cells to characterize their actions on the major depolarizing and repolarizing currents (I[sub Na] and I[sub TO], respectively). Cloned sodium channels expressed in Xenopus oocytes served as a separate cell line in which to directly evaluate effects on lNa- The major conclusions from this study were as follows: 1. In this series, anti-arrhythmic activity against ischemia-induced arrhythmias was dependent on chemical structure, in particular, with the nature of the aromatic group (R₁) and amine heterocyclic group (R₂) held in a trans position by the cyclohexyl backbone. 2. Suppression of ischemia-induced arrhythmias with minimal actions on blood pressure and heart rate was best when R₁ was 1-naphthalene and R₂ , N-morpholino (RSD1000). 3. Naphthalene analogues of RSD1000 with different ionizable nitrogen groups were shown to inhibit I[sub Na] and/or I[sub TO] currents in rat ventricular myocytes. 4. Inhibition of I[sub Na] , but not I[sub TO], was potentiated by acid pH. 5. The blocking potency for I[sub Na] was proportional to the pKa of the compound, i.e., the higher the pKa, the lower the IC₅₀. 6. Antiarrhythmic effectiveness and selectivity for ischemia-induced arrhythmias was inversely proportional to pKa. The overall finding was that suppression of ischemia-induced arrhythmias by RSD1000 was a function of mixed I[sub Na] and I[sub TO] blockade and, unlike predominantly charged antiarrhythmic agents (e.g., quinidine), the former blocking component was localized to myocardial tissue with external acid pH.
Integrability from an abelian subgroup of the diffeomorphism group
Creators: name: Adam, C.
name: Sanchez-Guillen, J.
name: Wereszczynski, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been known for some time that for a large class of non-linear field theories in Minkowski space with two-dimensional target space the complex eikonal equation defines integrable submodels with infinitely many conservation laws. These conservation laws are related to the area-preserving diffeomorphisms on target space. Here we demonstrate that for all these theories there exists, in fact, a weaker integrability condition which again defines submodels with infinitely many conservation laws. These conservation laws will be related to an abelian subgroup of the group of area-preserving diffeomorphisms. As this weaker integrability condition is much easier to fulfil, it should be useful in the study of those non-linear field theories.
description: 13 pages, Latex file
Pricing service maintenance contracts using predictive analytics
Creators: name: Deprez, Laurens
name: Antonio, Katrien
name: Boute, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: As more manufacturers shift their focus from selling products to end solutions, full-service maintenance contracts gain traction in the business world. These contracts cover all maintenance related costs during a predetermined horizon in exchange for a fixed service fee and relieve customers from uncertain maintenance costs. To guarantee profitability, the service fees should at least cover the expected costs during the contract horizon. As these expected costs may depend on several machine-dependent characteristics, e.g. operational environment, the service fees should also be differentiated based on these characteristics. If not, customers that are less prone to high maintenance costs will not buy into or renege on the contract. The latter can lead to adverse selection and leave the service provider with a maintenance-heavy portfolio, which may be detrimental to the profitability of the service contracts. We contribute to the literature with a data-driven tariff plan based on the calibration of predictive models that take into account the different machine profiles. This conveys to the service provider which machine profiles should be attracted at which price. We demonstrate the advantage of a differentiated tariff plan and show how it better protects against adverse selection.
Non-statistical fluctuations for deep inelastic processes in 27Al + 27Al
Creators: name: Berceanu, I.
name: Duma, M.
name: Moisa, D.
name: Petrovici, M.
name: Pop, A.
name: Simion, V.
name: Del Zoppo, A.
name: d'Erasmo, G.
name: Imme, G.
name: Lanzano, G.
name: Pagano, A.
name: Pantaleo, A.
name: Raciti, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The excitation functions for different fragments produced in the 27Al + 27Al dissipative collisions have been measured in steps of 250 keV in the energy range 122 - 132 MeV. Deep inelastic processes have been selected by integrating events over a total kinetic energy loss window of 12 MeV between 20 and 32 MeV. Large fluctuations have been observed in all the studied excitation functions. Non-satistical origin of these fluctuations is confirmed by large channel cross correlations coefficients. Energy autocorrelation function of cross section excitation function presents damped oscillation structure as predicted for the case when a di-nuclear system with a lifetime similar with its revolution period is formed. The periodicity of the energy autocorrelation function is used to obtain information on the deformation of the 27Al + 27 Al di-nucleus.
description: 6 pages, 4 figures, 2 tables
DETERMINANTS OF COMPETITIVENESS IN THE SOUTH AFRICAN AGRO-FOOD AND FIBRE COMPLEX
Creators: name: Esterhuizen, Dirk
name: Van Rooyen, C.J.
name: Doyer, Ockert T.
name: Esterhuizen, Dirk
name: Van Rooyen, C.J.
name: Doyer, Ockert T.
Publisher: name: Unknown
Year: 2000
Subjects: Agribusiness
Industrial Organization

description: The competitiveness of the South African agro-food and fibre complex depends on a number of factors: technological, socio-political and economic. This paper attempts to identify and analyse such factors by using a framework of analysis proposed by Michael Porter (1990). Appropriate measures to increase competitiveness are proposed. These include improved supply chain management, cost reduction, contractual pricing and the establishment of a clear "agribusiness development policy".
Further Investigation of the Survivability of Code Technical Debt Items
Creators: name: Zabardast, Ehsan
name: Bennin, Kwabena Ebo
name: Gonzalez-Huerta, Javier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context: Technical Debt (TD) discusses the negative impact of sub-optimal decisions to cope with the need-for-speed in software development. Code Technical Debt Items (TDI) are atomic elements of TD that can be observed in code artefacts. Empirical results on open-source systems demonstrated how code-smells, which are just one type of TDIs, are introduced and "survive" during release cycles. However, little is known about whether the results on the survivability of code-smells hold for other types of code TDIs (i.e., bugs and vulnerabilities) and in industrial settings. Goal: Understanding the survivability of code TDIs by conducting an empirical study analysing two industrial cases and 31 open-source systems from Apache Foundation. Method: We analysed 133,670 code TDIs (35,703 from the industrial systems) detected by SonarQube (in 193,196 commits) to assess their survivability using survivability models. Results: In general, code TDIs tend to remain and linger for long periods in open-source systems, whereas they are removed faster in industrial systems. Code TDIs that survive over a certain threshold tend to remain much longer, which confirms previous results. Our results also suggest that bugs tend to be removed faster, while code smells and vulnerabilities tend to survive longer.
description: Submitted to the Journal of Software: Evolution and Process (JSME)
Perelomov problem and inversion of the Segal-Bargmann transform
Creators: name: Neretin, Yurii A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 42A99, 81R30, 30E05

description: We reconstruct a function by values of its Segal-Bargmann transform at points of a lattice.
description: 4pp, final variant
Filling in pattern designs for incomplete pairwise comparison matrices: (quasi-)regular graphs with minimal diameter
Creators: name: Bozóki, Sándor
name: Szádoczki, Zsombor
name: Tekile, Hailemariam Abebe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Multicriteria Decision Making problems are important both for individuals and groups. Pairwise comparisons have become popular in the theory and practice of preference modelling and quantification. We focus on decision problems where the set of pairwise comparisons can be chosen, i.e., it is not given a priori. The objective of this paper is to provide recommendations for filling patterns of incomplete pairwise comparison matrices (PCMs) based on their graph representation. Regularity means that each item is compared to others for the same number of times, resulting in a kind of symmetry. A graph on an odd number of vertices is called quasi-regular, if the degree of every vertex is the same odd number, except for one vertex whose degree is larger by one. If there is a pair of items such that their shortest connecting path is very long, the comparison between these two items relies on many intermediate comparisons, and is possibly biased by all of their errors. Such an example was previously found, where the graph generated from the table tennis players' matches included a long shortest path between two vertices (players), and the calculated result appeared to be misleading. If the diameter of the graph of comparisons is low as possible (among the graphs of the same number of edges), we can avoid, or, at least decrease, such cumulated errors. The aim of our research is to find graphs, among regular and quasi-regular ones, with minimal diameter. Both theorists and practitioners can use the results, given in several formats in the appendix: graph, adjacency matrix, list of edges.
description: 68 pages, 28 figures
Quantum regression theorem for non-Markovian Lindblad equations
Creators: name: Budini, Adrian A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We find the conditions under which a quantum regression theorem can be assumed valid for non-Markovian master equations consisting in Lindblad superoperators with memory kernels. Our considerations are based on a generalized Born-Markov approximation, which allows us to obtain our results from an underlying Hamiltonian description. We demonstrate that a non-Markovian quantum regression theorem can only be granted in a stationary regime if the dynamics satisfies a quantum detailed balance condition. As an example we study the correlations of a two level system embedded in a complex structured reservoir and driven by an external coherent field.
description: 14 pages, 5 figures. Extended version. The GBMA is deduced from projector technique. A new appendix is added
Magnetism in BN nanotubes induced by Carbon Substitution
Creators: name: Wu, R.
name: Peng, G.
name: Liu, L.
name: Feng, Y. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We performed ab initio calculation on the pristine and carbon-doped (5,5) and (9,0) BN nanotubes. It was found that Carbon substitution for either boron or nitrogen in BN nanotubes can induce spontaneous magnetization. Calculations based on density functional theory with the local-spin-density-approximation on the electronic band structure revealed a spin polarized, dispersionless band near the Fermi energy. The magnetization can be attributed to the carbon 2p electron. Compared to other theoretical models of light-element or metal-free magnetic materials, the Carbon-doped BN nanotubes are more experimentally accessible and can be potentially useful.
description: 3 pages,3 figures
Behavior of a boundary of moving volume inside of a smooth flow of compressible liquid
Creators: name: Rozanova, Olga
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35L65;35L60;35L67

description: The question on expansion of moving volume inside of a smooth flow of the compressible liquid is under consideration. We find a condition on initial data such that if it holds, then within a finite time either the boundary of the moving volume attains a given neighborhood of a certain point (that do not belong to the volume initially), or some a priori estimate for the pressure on the boundary of volume fails.
description: 10 pages, accepted in "Differential Equations"
NLP Scholar: An Interactive Visual Explorer for Natural Language Processing Literature
Creators: name: Mohammad, Saif M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Digital Libraries (cs.DL)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: As part of the NLP Scholar project, we created a single unified dataset of NLP papers and their meta-information (including citation numbers), by extracting and aligning information from the ACL Anthology and Google Scholar. In this paper, we describe several interconnected interactive visualizations (dashboards) that present various aspects of the data. Clicking on an item within a visualization or entering query terms in the search boxes filters the data in all visualizations in the dashboard. This allows users to search for papers in the area of their interest, published within specific time periods, published by specified authors, etc. The interactive visualizations presented here, and the associated dataset of papers mapped to citations, have additional uses as well including understanding how the field is growing (both overall and across sub-areas), as well as quantifying the impact of different types of papers on subsequent publications.
description: arXiv admin note: text overlap with arXiv:2005.00912
OH 12.8-0.9: A New Water-Fountain Source
Creators: name: Boboltz, D. A.
name: Marvel, K. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present observational evidence that the OH/IR star OH 12.8-0.9 is the fourth in a class of objects previously dubbed "water-fountain" sources. Using the Very Long Baseline Array, we produced the first images of the water maser emission associated with OH 12.8-0.9. We find that the masers are located in two compact regions with an angular separation of ~109 mas on the sky. The axis of separation between the two maser regions is at a position angle of 1.5 deg. East of North with the blue-shifted (-80.5 to -85.5 km/s) masers located to the North and the red-shifted (-32.0 to -35.5 km/s) masers to the South. In addition, we find that the blue- and red-shifted masers are distributed along arc-like structures ~10-12 mas across oriented roughly perpendicular to the separation axis. The morphology exhibited by the water masers is suggestive of an axisymmetric wind with the masers tracing bow shocks formed as the wind impacts the ambient medium. This bipolar jet-like structure is typical of the three other confirmed water-fountain sources. When combined with the previously observed spectral characteristics of OH 12.8-0.9, the observed spatio-kinematic structure of the water masers provides strong evidence that OH 12.8-0.9 is indeed a member of the water-fountain class.
description: 12 pages, 2 figures (1 color), accepted for publication in the Ap J Letters
Bemerkungen zur Arbeitsmethode der Kommission für Glauben und Kirchenverfassung
Creators: name: Schlink, Edmund
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 16 Nr. 4 (1967): Ökumenische Rundschau, Band 16, Heft 4
Simulating large-scale structure formation with magnetic fields
Creators: name: Dolag, Klaus
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the past, different works based on numerical simulations have been presented to explain magnetic fields (MFs) in the large scale structure and within galaxy clusters. In this review, I will summarize the main findings obtained by different authors and - even if many details are still unclear - I will try to construct a consistent picture of our interpretation of large-scale magnetic fields based on numerical effort. I will also sketch how this is related to our understanding of radio emission and summarize some arguments where our theoretical understanding has to be improved to match the observations.
description: invited review, 8 pages, 14 figures, accepted by Astronomische Nachrichten (proceedings of "The Origin and Evolution of Cosmic Magnetism", 29 August - 2 September 2005, Bologna, Italy)
The growth of social assistance receipt in Canada
Creators: name: Stark, Alan A.
Publisher: name: University of British Columbia
Year: 2009

description: The research undertaken in this thesis examines social assistance (welfare) receipt in Canada during the 1981-95 period to determine the forces responsible for the dramatic growth in welfare use observed during the 1990s. The influence of changes in welfare benefits, labour market conditions, and the availability of unemployment insurance on welfare use during this period is examined using two distinct, but complementary approaches. The first approach investigates this issue from an aggregate standpoint, using Survey of Consumer Finances micro data to construct welfare usage rates for employable singles without children (male and female) and lone mothers. Separate analyses are performed for each of these sub-groups using aggregate province level data. The second approach attacks the issue from a microeconomic standpoint, employing duration analysis to examine the path leading individuals from employment to welfare receipt. Using the 1988-90 longitudinal file of the Labour Market Activity Survey, semi-parametric duration models are estimated to determine how the job loss, reemployment and welfare take-up processes are affected by incentives in welfare benefits, labour market conditions, availability of unemployment insurance as well as demographic variables. The estimates from the duration analysis are applied to administrative data on inflows of persons into the pool of non-employed to simulate and decompose rates of welfare incidence over the 1984-95 period. Results from these two approaches present a relatively consistent picture of welfare use in Canada during the 1990s. Both approaches find strong evidence of important labour market effects. Thus, the economic downturn of the early 1990s played a significant role in the growth of welfare use during this period, particularly in Ontario and Quebec. The evidence concerning the importance of interactions with the unemployment insurance system and changes in benefit generosity is mixed. Both UI effects and benefit effects are found to be important determinants of welfare use but only among specific types of families. The simulation results indicate these factors can account for only a minor amount of the variation in predicted welfare incidence in the 1990s.
Monte Carlo Simulations of Opinion Dynamics
Creators: name: Fortunato, Santo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We briefly introduce a new promising field of applications of statistical physics, opinion dynamics, where the systems at study are social groups or communities and the atoms/spins are the individuals (or agents) belonging to such groups. The opinion of each agent is modeled by a number, integer or real, and simple rules determine how the opinions vary as a consequence of discussions between people. Monte Carlo simulations of consensus models lead to patterns of self-organization among the agents which fairly well reproduce the trends observed in real social systems.
description: 5 pages, 2 figures. Contribution to the Proceedings of the Conference "Complexity, Metastability and Nonextensivity", Ettore Majorana Foundation and Center for Scientific Culture, Erice (Sicily) 20-26 July 2004
THE POLITICAL ECONOMY OF FOOD PRICE INFLATION IN SOUTH AFRICA
Creators: name: Kirsten, Johann F.
name: Vink, Nick
name: Scheepers, D.
name: Meyer, Ferdinand H.
name: Calcaterra, M.
name: Jenkins, Lindie
name: Kirsten, Johann F.
name: Vink, Nick
name: Scheepers, D.
name: Meyer, Ferdinand H.
name: Calcaterra, M.
name: Jenkins, Lindie
Publisher: name: Unknown
Year: 2002
Subjects: Demand and Price Analysis
Political Economy

description: This paper reports on a study that investigated the increase in food prices in South Africa. It is set against the scenario of an increasing inflation rate since September 2001. The June 2002 STATSSA figures estimated the annual inflation rate (CPIX) at 8.8% with food inflation being the major contributor with an annual increase of 14%. The high unemployment and poverty rate in South Africa has already lead to concerns about the negative impact of these increases on the cost of living for the poorest. In this paper we show that the sharp depreciation of the exchange rate towards the end of 2001 had a major impact on the producer price of maize - one of the key agricultural commodities because of its role as a staple food and as an input in the production of white and red meat and other animal products.
Heterogeneities in the Glassy State
Creators: name: Vollmayr-Lee, Katharina
name: Zippelius, Annette
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study heterogeneities in a binary Lennard-Jones system below the glass transition using molecular dynamics simulations. We identify mobile and immobile particles and measure their distribution of vibrational amplitudes. For temperatures near the glass transition the distribution of vibrational amplitudes obeys scaling and compares reasonably well with a mean field theory for the amorphous solid state. To investigate correlations among the immobile and mobile particles we identify clusters and analyze their size and shape. For a fixed number of immobile particles we observe that the immobile particles cluster more strongly together as the temperature is increased which allows the particles to block each other more effectively, and to therefore stay immobile. For the mobile particles, on the other hand, the clustering is most pronounced at small temperatures, indicating that mobility at low temperatures can only be sustained in cooperative motion.
description: 9 pages, 15 figures
ACTION RESEARCH FOR THE DEVELOPMENT OF A NEGOTIATION SUPPORT TOOL TOWARDS DECENTRALISED WATER MANAGEMENT IN SOUTH AFRICA
Creators: name: Farolfi, Stefano
name: Farolfi, Stefano
Publisher: name: Unknown
Year: 2004
Subjects: Resource /Energy Economics and Policy

description: In 1998 the South African government adopted water legislation that provides a new constitutional framework for water management. Economic efficiency, social equity, and environmental sustainability are the guiding criteria of the new South African water policy. Water management will be implemented through decentralized institutions (Catchment Management Agencies and Committees, Water Users Associations). These institutions will be in charge of local negotiations and the decision-making processes regarding resource allocation among stakeholders. The new water management institutions have the complex context characterized by inequalities, lack or asymmetry of information, and conflicting interests. Hence, a clear need for negotiation and decision support tools for these institutions is perceived. An action research project was initiated at the University of Pretoria in 2001. It has the main objective of supporting the sustainable establishment of decentralized water management institutions as negotiation and decision-making entities on water resource management at basin level. This paper describes and discusses the participatory approach, aimed at developing a negotiation support tool called Action-research and Watershed Analyses for Resource and Economic sustainability (AWARE). More precisely, the phases of development of the model in close collaboration with DWAF officers are analysed. The choice of involving different stakeholders at different stages of the process, and its possible consequences on the nature of the tool is discussed.
Implications of Behavioral Finance for Farmer Marketing Strategy Recommendation
Creators: name: Brorsen, B. Wade
name: Anderson, Kim B.
name: Brorsen, B. Wade
name: Anderson, Kim B.
Publisher: name: Unknown
Year: 2001
Subjects: subject: Agricultural Finance
subject: Marketing
subject: FOS: Economics and business

description: Behavioral finance is a relatively new field of inquiry that may help better understand farmer marketing. The theory argues that people tend to make certain psychological biases that cause them to not be fully rational in an economic sense. For example, people tend to be about twice as upset about a loss as they would be happy about a gain of the same size. The theory can help explain why producers would pay a marketing consultant even when markets are efficient. Extension programs need to consider the psychology of marketing. The theory suggests that decisions need to be framed in terms of their effect on the whole farm operation and in terms of profits over a series of years.
CROP INSURANCE VALUATION UNDER ALTERNATIVE YIELD DISTRIBUTIONS
Creators: name: Zanini, Fabio C.
name: Sherrick, Bruce J.
name: Schnitkey, Gary D.
name: Irwin, Scott H.
name: Zanini, Fabio C.
name: Sherrick, Bruce J.
name: Schnitkey, Gary D.
name: Irwin, Scott H.
Publisher: name: Unknown
Year: 2001
Subjects: Risk and Uncertainty

description: Considerable disagreement exists about the most appropriate characterization of farm-level yield distributions. Yet, the economic importance of alternate yield distribution specifications on insurance valuation, product designs and farm-level risk management has not been investigated or documented. The results of this study demonstrate that large differences in expected payments from popular crop insurance products can arise solely from the parameterization chosen to represent yields. The results suggest that the frequently unexamined yield distribution specification may lead to incorrect conclusions in important areas of insurance and risk management research such as policy rating, and assessment of expected payments from policies.
VALES VI: ISM enrichment in star-forming galaxies up to z$\sim$0.2 using $^{12}$CO(1-0), $^{13}$CO(1-0) and C$^{18}$O(1-0) line luminosity ratios
Creators: name: Méndez-Hernández, H.
name: Ibar, E.
name: Knudsen, K. K.
name: Cassata, P.
name: Aravena, M.
name: Michałowski, M. J.
name: Zhang, Zhi-Yu
name: Lara-López, M. A.
name: Ivison, R. J.
name: van der Werf, P.
name: Villanueva, V.
name: Herrera-Camus, R.
name: Hughes, T. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present Atacama Large Millimeter/sub-millimeter Array (ALMA) observations towards 27 low-redshift ($0.02< z<0.2$) star-forming galaxies taken from the Valparaíso ALMA/APEX Line Emission Survey (VALES). We perform stacking analyses of the $^{12}$CO($1-0$), $^{13}$CO($1-0$) and C$^{18}$O($1-0$) emission lines to explore the $L'$ ($^{12}$CO($1-0$))/$L'$($^{13}$CO($1-0$))) (hereafter $L'$($^{12}$CO)/$L'$($^{13}$CO)) and $L'$($^{13}$CO($1-0$))/$L'$(C$^{18}$O($1-0$)) (hereafter $L'$($^{13}$CO)/$L'$(C$^{18}$O) line luminosity ratio dependence as a function of different global galaxy parameters related to the star formation activity. The sample has far-IR luminosities $10^{10.1-11.9}$L$_{\odot}$ and stellar masses of $10^{9.8-10.9}$M$_{\odot}$ corresponding to typical star-forming and starburst galaxies at these redshifts. On average we find a $L'$($^{12}$CO)/$L'$($^{13}$CO) line luminosity ratio value of 16.1$\pm$2.5. Galaxies with evidences of possible merging activity tend to show higher $L'$($^{12}$CO)/$L'$($^{13}$CO) ratios by a factor of two, while variations of this order are also found in galaxy samples with higher star formation rates or star formation efficiencies. We also find an average $L'$($^{13}$CO)/$L'$(C$^{18}$O) line luminosity ratio of 2.5$\pm$0.6, which is in good agreement with those previously reported for starburst galaxies. We find that galaxy samples with high $L_{\text{IR}}$, SFR and SFE show low $L'$($^{13}$CO)/$L'$(C$^{18}$O) line luminosity ratios with high $L'$($^{12}$CO)/$L'$($^{13}$CO) line luminosity ratios, suggesting that these trends are produced by selective enrichment of massive stars in young starbursts.
description: 16 pages, 10 figures to be published in MNRAS
A short gamma-ray burst apparently asssociated with an elliptical galaxy at redshift z=0.225
Creators: name: Gehrels, N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Gamma Ray Bursts (GRBs) are bright, brief flashes of high energy photons that have fascinated scientists for 30 years. They come in two classes: long (>2 s), softspectrum bursts and short, hard events. The major progress to date on understanding GRBs has been for long bursts which are typically at high redshift (z ~ 1) and are in sub-luminous star-forming host galaxies. They are likely produced in core-collapse explosions of massive stars. Until the present observation, no short GRB had been accurately (<10") and rapidly (minutes) located. Here we report the detection of X-ray afterglow from and the localization of short burst GRB050509b. Its position on the sky is near a luminous, non-starforming elliptical galaxy at a redshift of 0.225, exactly the type of location one would expect if the origin of this GRB is the long-proposed fiery merger of neutron star (NS) or black hole (BH) binaries. The X-ray afterglow is found to be weak and fading below detection within a few hours and no optical afterglow is detected to stringent limits, explaining the past difficulty in localizing short GRBs.
description: 16 pages, 3 figures updated figures
Weak-field Hall Resistivity and Spin/Valley Flavor Symmetry Breaking in Magic-Angle Twisted Bilayer Graphene
Creators: name: Xie, Ming
name: MacDonald, Allan H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Near a magic twist angle, the lowest energy conduction and valence bands of bilayer graphene moiré superlattices become extremely narrow. The band dispersion that remains is sensitive to the moiré's strain pattern, nonlocal tunneling between layers, and filling-factor dependent Hartree and exchange band renormalizations. In this article we analyze the influence of these band-structure details on the pattern of flavor-symmetry-breaking observed in this narrow band system, and on the associated pattern of Fermi surface reconstructions revealed by weak-field-Hall and Schubnikov-de Haas magneto-transport measurements.
description: Minor update to main text; added survey of (magneto-)transport experiments to supplemental material
Aname aurantella Wilson & Harvey & Simmons & Rix 2025
Creators: name: Wilson, Jeremy D.
name: Harvey, Mark S.
name: Simmons, Leigh W.
name: Rix, Michael G.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Anamidae
Aname
Aname aurantella

description: Aname aurantella -complex
Figs 4B, 13, 96–98
Composition
The aurantella- complex includes three described species: A. aurantella sp. nov., A. gilbertensis sp. nov. and A. pyroensis sp. nov.
description: Published as part of Wilson, Jeremy D., Harvey, Mark S., Simmons, Leigh W. & Rix, Michael G., 2025, An integrative systematic revision of the wishbone spiders (Araneae: Anamidae: Aname L. Koch, 1873) of subtropical and tropical eastern Australia, with the description of 55 new species, pp. 1-298 in European Journal of Taxonomy 985 on page 150, DOI: 10.5852/ejt.2025.985.2845, http://zenodo.org/record/15169471