cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mixing of Pentaquark and Molecular States
Creators: name: He, Xiao-Gang
name: Li, Xue-Qian
name: Liu, Xiang
name: Zeng, Xiao-Qian
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: There are experimental evidences for the existence of narrow states $Θ^+$ and $Θ_c$ with the same quantum numbers of $uudd\bar s$ and $uudd\bar c$ pentaquarks and also $NK^{(*)}$ and $ND^{(*)}$ molecular states. Their masses deviate from many theoretical estimates of the pure pentaquark and molecular states. In this work we study the possibility that the observed $Θ^+$ and $Θ_c$ are mixtures of pure pentaquark and molecular states. The mixing parameters are in general related to non-perturbative QCD which are not calculable at present. We determine them by fitting data from known states and then generalize the mechanism to $Θ_b$ to predict its mass and width. The mixing mechanism can also naturally explain the narrow width for $Θ^+$ and $Θ_c$ through destructive interferences, even if the pure pentaquark and molecular states have much larger decay widths. We also briefly discuss the properties of the partner eigenstates of $Θ^+$ and $Θ_c$ and the possibility of experimentally observe them. Moreover, probable consequences of multi-state mixing are also addressed.
description: 23 pages, 4 figures. Published version in EPJC
THE ESSENCE OF LEXICAL COMPETENCE DEVELOPMENT IN ENGLISH LANGUAGE TEACHING
Creators: name: Shoynazarova, Vazira
Publisher: name: Zenodo
Year: 2024

description: The essence of lexical competence development in English language teaching is a critical aspect of language learning and proficiency. Lexical competence refers to the ability to use and understand words and phrases in a given language, and it plays a crucial role in effective communication and language proficiency. In the context of English language teaching, the development of lexical competence is essential for learners to become proficient speakers and writers of the language. This article will explore the significance of lexical competence development in English language teaching, and discuss various strategies and approaches that can be employed to enhance lexical competence in learners.
Relationship between vital attributes of Ktunaxa plants and natural disturbance regimes in Southeastern British Columbia
Creators: name: Mah, Shirley
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of the study was to examine the relationship between plant resources of the Ktunaxa people and the natural disturbance regimes in southeastern British Columbia and how reduced fire frequency may have affected the plant resources. The main objectives were to determine the vital attributes or fire survival strategy for each Ktunaxa plant; validate Rowe's hypothesis on the relationships between different species groups (set of vital attributes) and fire cycle length for southeastern British Columbia; and predict which Ktunaxa plants would most likely be affected by reduced fire frequency. The proportions of species groups, based on the Ktunaxa plants and their assigned vital attributes, were determined for 13 Biogeoclimatic (BEC) sub zone/variants, ranging from low elevation ponderosa pine to subalpine ecosystems. I used a one-way nested ANOVA to test the relationships between species groups and fire cycle length. The data for southeastern British Columbia tended to be consistent with Rowe's hypothesis. Examples are presented of Ktunaxa plants most likely to be affected by reduced frequency of fire: plants that can resprout from underground parts; plants that produce wind-carried seed; and shade intolerant plants that store seed in the soil.
Crystalline and Electronic Structures of Molecular Solid C$_{50}$Cl$% _{10}$: First-Principles Calculation
Creators: name: Yan, Qing-Bo
name: Zheng, Qing-Rong
name: Su, Gang
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A molecular solid C$_{50}$Cl$_{10}$ with possible crystalline structures, including the hexagonal-close-packed (hcp) phase, the face-centered cubic (fcc) phase, and a hexagonal monolayer, is predicted in terms of first-principles calculation within the density functional theory. The stable structures are determined from the total-energy calculations, where the hcp phase is uncovered more stable than the fcc phase and the hexagonal monolayer in energy per molecule. The energy bands and density of states for hcp and fcc C$_{50}$Cl$_{10}$ are presented. The results show that C$_{50}$Cl% $_{10}$ molecules can form either a hcp or fcc indirect-gap band insulator or an insulating hexagonal monolayer.
description: 5 pages, 6 figures
The effect of shear on persistence in coarsening systems
Creators: name: Rapapa, N. P.
name: Bray, A. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We analytically study the effect of a uniform shear flow on the persistence properties of coarsening systems. The study is carried out within the anisotropic Ohta-Jasnow-Kawasaki (OJK) approximation for a system with nonconserved scalar order parameter. We find that the persistence exponent theta has a non-trivial value: theta = 0.5034... in space dimension d=3, and theta = 0.2406... for d=2, the latter being exactly twice the value found for the unsheared system in d=1. We also find that the autocorrelation exponent lambda is affected by shear in d=3 but not in d=2.
description: 6 pages
An extended variational theory for nonlinear evolution equations via modular spaces
Creators: name: Menovschikov, Alexander
name: Molchanova, Anastasia
name: Scarpa, Luca
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 35A15, 35D30, 35K67

description: We propose an extension of the classical variational theory of evolution equations that accounts for dynamics also in possibly non-reflexive and non-separable spaces. The pivoting point is to establish a novel variational structure, based on abstract modular spaces associated to a given convex function. Firstly, we show that the new variational triple is suited for framing the evolution, in the sense that a novel duality paring can be introduced and a generalised computational chain rule holds. Secondly, we prove well-posedness in an extended variational sense for evolution equations, without relying on any reflexivity assumption and any polynomial requirement on the nonlinearity. Finally, we discuss several important applications that can be addressed in this framework: these cover, but are not limited to, equations in Musielak-Orlicz-Sobolev spaces, such as variable exponent, Orlicz, weighted Lebesgue, and double-phase spaces.
description: 37 pages
On vacuum integration
Creators: name: Anikin, I. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The effective potential is known to be given by the vacuum diagrams. In this paper we show that the massive loop integrations corresponding to the vacuum diagrams can be expressed through the massless loop integrations with the corresponding massive prefactor provided the special treatment of $δ(0)$-singularity. In its turn, the massless loop integrations provide the useful instrument for the conformal symmetry application.
description: 4 pages, 3 figures
BAYES' ESTIMATES OF THE DOUBLE HURDLE MODEL IN THE PRESENCE OF FIXED COSTS
Creators: name: Holloway, Garth J.
name: Barrett, Christopher B.
name: Ehui, Simeon K.
name: Holloway, Garth J.
name: Barrett, Christopher B.
name: Ehui, Simeon K.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Financial Economics
subject: market participation
subject: fixed costs
subject: double-hurdle model
subject: censored regression.

description: We present a model of market adoption (participation) where the presence of non-negligible fixed costs leads to non-zero censoring of the traditional double-hurdle regression. Fixed costs arise due to household resources that must be devoted a priori to the decision to participate in the market. These costs-usually a cost of time-motivate two-step decision-making and focus attentions on the minimum-efficient scale of operations (the minimum amount of milk sales) at which market entry becomes viable. This focus, in turn, motivates a non-zero-censored Tobit regression estimated through routine application of Markov chain Monte Carlo Methods.
Taxilejeunea nilgiriensis P. K. Verma et S. C. Srivast.
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Jungermanniopsida
Porellales
Lejeuneaceae
Taxilejeunea
Taxilejeunea nilgiriensis

description: Taxilejeunea nilgiriensis P.K.Verma et S.C.Srivast.,
Proc. Natl. Acad. Sci. India, B 77 (2): 207, 2007 (see Verma & Srivastava 2007).
TYPE: “ Tamil Nadu: Nilgiri hills - Kilkotagiri (Kengarai); ca 1850–1900 m. 01.04.2003; P.K. Verma et A. Alam; 16916/2003 (LWU)”
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 75, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
Effect of Finite Granularity of Detectors on Anisotropy Coefficients
Creators: name: Raniwala, Sudhir
name: Idzik, Marek
name: Raniwala, Rashmi
name: Viyogi, Yogendra P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The coefficients that describe the anisotropy in the azimuthal distribution of particles are lower when the particles are recorded in a detector with finite granularity and measures only hits. This arises due to loss of information because of multiple hits in any channel. The magnitude of this loss of signal depends both on the occupancy and on the value of the coefficient. These correction factors are obtained for analysis methods differing in detail, and are found to be different.
description: 11 pages including 2 figures
Transverse localization and slow propagation of light
Creators: name: Cheng, Jing
name: Han, ShenSheng
name: Yan, YiJing
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The effect of finite control beam on the transverse spatial profile of the slow light propagation in an electromagnetically induced transparency medium is studied. We arrive at a general criterion in terms of eigenequation, and demonstrate the existence of a set of localized, stationary transverse modes for the negative detuning of the probe signal field. Each of these diffraction-free transverse modes has its own characteristic group velocity, smaller than the conventional theoretical result without considering the transverse spatial effect.
FOOD AID AND COMMERCIAL INTERNATIONAL FOOD TRADE
Creators: name: Barrett, Christopher B.
name: Barrett, Christopher B.
Publisher: name: Unknown
Year: 2002
Subjects: International Relations/Trade

description: 1. This paper was commissioned by the Trade and Markets Division of the Organisation for Economic Co-operation and Development (OECD) to address the relationship between food aid and commercial international food trade as background to an anticipated OECD study on the export competition aspects of food aid. The terms of reference for this study call for "a critical review of the existing literature on the potential use of food aid as an export support policy or, alternatively, the potential that food aid bears implications similar to those of export supporting policies." 2. This paper can be summarized as follows. Food aid has multiple objectives, modalities and effects and there has been significant movement over time in each of these areas. Concerns about the use of food aid as an export support policy are founded in both the history of bilateral food aid, in the political economy of food aid support in major donor countries, and in some current uses. The effects of food aid on commercial international food trade turn on several key factors, chief among which is its targeting, of which timing of deliveries is an important subfactor. Due to inevitably imperfect targeting at both macro and micro levels, food aid clearly displaces commercial sales of food contemporaneously in recipient economies. The evidence is unclear as to the distribution of these short-term losses across domestic and foreign suppliers in recipient countries, but the evidence somewhat favors the conclusion that most of the displacement comes out of commercial imports. Whether this displacement adversely effects international food markets depends on the manner in which the food aid is obtained, how well integrated the recipient economy market is with the global market, and recipient demand for variety. The longer-term effects of food aid turn on the dynamic income effects of food aid receipt and the extent to which these stimulate future food demand. The crucial questions then are how the short-term losses due to contemporaneous displacement of commercial imports, the global market effects of alternative food aid procurement modalities, and the long-term gains from any derivative income stimulus balance out over time and how these costs and benefits are distributed among donors and third party exporters. Research on these topics has been surprisingly scarce and, largely as a consequence, premature conclusions are too often drawn on the basis of quite limited evidence on the contemporaneous displacement effects of food aid on recipient country markets. Finally, because food aid's effects on trade stem directly from the efficacy of targeting, policymakers exploring the effects of food aid on commercial international food trade must consider explicitly the trade-off between higher expected displacement of commercial trade and higher expected targeting errors of exclusion of intended beneficiaries through restrictive distribution rules.
Possible new source of T and CP violation in neutrino oscillations
Creators: name: Klinkhamer, Frans R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A model is presented to illustrate that vacuum neutrino oscillations can be essentially T and CP invariant up to a certain energy but strongly T and CP noninvariant at much higher energies. Detailed model results for the vacuum probabilities P(nu_mu to nu_e) and P(nu_e to nu_mu) are given, which may be relevant to proposed long-baseline neutrino-oscillation experiments.
description: 10 pages with revtex4, v4: large figures and full references
ESTIMATING INDIVIDUAL FARM SUPPLY AND DEMAND ELASTICITIES USING NONPARAMETRIC PRODUCTION ANALYSIS
Creators: name: Stefanides, Zdenko
name: Tauer, Loren W.
name: Stefanides, Zdenko
name: Tauer, Loren W.
Publisher: name: Unknown
Year: 1997
Subjects: Demand and Price Analysis

description: Nonparametric production methods are used to estimate individual supply response and input demand elasticities for a group of New York dairy farm businesses. The ranges of estimates from the upper and lower bounds are extremely large, probably because only nine observations (years) are available for each farm.
Unzipping DNA by force: thermodynamics and finite size behaviour
Creators: name: Kapri, Rajeev
name: Bhattacharjee, Somendra M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We discuss the thermodynamic behaviour near the force induced unzipping transition of a double stranded DNA in two different ensembles. The Y-fork is identified as the coexisting phases in the fixed distance ensemble. From finite size scaling of thermodynamic quantities like the extensibility, the length of the unzipped segment of a Y-fork, the phase diagram can be recovered. We suggest that such procedures could be used to obtain the thermodynamic phase diagram from experiments on finite length DNA.
description: 10 pages, accepted for publication in special issue of Journal of Physics: Condensed Matter
MACROECONOMIC SHOCKS, HUMAN CAPITAL AND PRODUCTIVE EFFICIENCY: EVIDENCE FROM WEST AFRICAN FARMERS
Creators: name: Barrett, Christopher B.
name: Sherlund, Shane M.
name: Adesina, Akinwumi A.
name: Barrett, Christopher B.
name: Sherlund, Shane M.
name: Adesina, Akinwumi A.
Publisher: name: Unknown
Year: 2003
Subjects: Labor and Human Capital

description: Little empirical work has quantified the transitory effects of macroeconomic shocks on farm-level production behavior. We develop a simple analytical model to explain how macroeconomic shocks might temporarily divert managerial attention, thereby affecting farm-level productivity, but perhaps to different degrees and for different durations across production units. We then successfully test hypotheses from that model using panel data bracketing massive currency devaluation in the west African nation of Cote d'Ivoire. We find a transitory increase in mean plot-level technical inefficiency among Ivorien rice producers and considerable variation in the magnitude and persistence of this effect, attributable largely to ex ante complexity of operations, and the educational attainment and off-farm employment status of the plot manager.
Cryptography In the Bounded Quantum-Storage Model
Creators: name: Damgaard, Ivan
name: Fehr, Serge
name: Salvail, Louis
name: Schaffner, Christian
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We initiate the study of two-party cryptographic primitives with unconditional security, assuming that the adversary's quantum memory is of bounded size. We show that oblivious transfer and bit commitment can be implemented in this model using protocols where honest parties need no quantum memory, whereas an adversarial player needs quantum memory of size at least n/2 in order to break the protocol, where n is the number of qubits transmitted. This is in sharp contrast to the classical bounded-memory model, where we can only tolerate adversaries with memory of size quadratic in honest players' memory size. Our protocols are efficient, non-interactive and can be implemented using today's technology. On the technical side, a new entropic uncertainty relation involving min-entropy is established.
description: 26 pages, full version of a paper appeared in 46th Annual IEEE Symposium on Foundations of Computer Science (FOCS), pages 449-458, 2005
CoRT: Complementary Rankings from Transformers
Creators: name: Wrzalik, Marco
name: Krechel, Dirk
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Retrieval (cs.IR)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: H.3.3; I.2.7
subject: 68P20

description: Many recent approaches towards neural information retrieval mitigate their computational costs by using a multi-stage ranking pipeline. In the first stage, a number of potentially relevant candidates are retrieved using an efficient retrieval model such as BM25. Although BM25 has proven decent performance as a first-stage ranker, it tends to miss relevant passages. In this context we propose CoRT, a simple neural first-stage ranking model that leverages contextual representations from pretrained language models such as BERT to complement term-based ranking functions while causing no significant delay at query time. Using the MS MARCO dataset, we show that CoRT significantly increases the candidate recall by complementing BM25 with missing candidates. Consequently, we find subsequent re-rankers achieve superior results with less candidates. We further demonstrate that passage retrieval using CoRT can be realized with surprisingly low latencies.
description: NAACL-HLT 2021, Long Paper
Trichocolea japonica T. Katag., Bryologist
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Jungermanniopsida
Jungermanniales
Trichocoleaceae
Trichocolea
Trichocolea japonica

description: Trichocolea japonica T.Katag.,
Bryologist 114 (4): 744, 2011 (see Katagiri et al. 2011).
TYPE: “ Japan. Honshu: Mt. Kaikoma, Southern Japanese Alps, between Kitazawa mountain pass and Sensui mountain pass, ca. 2000 m alt., on wet boulder, 12 June 2010, Katagiri 3198 (holotype: HIRO; isotypes: NY, TNS)”.
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 75, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
ESTIMATES OF INDIVIDUAL DAIRY FARM SUPPLY ELASTICITIES
Creators: name: Tauer, Loren W.
name: Tauer, Loren W.
Publisher: name: Unknown
Year: 1998
Subjects: Livestock Production/Industries

description: Milk supply elasticities were estimated for 70 farms who participated in the New York Dairy Farm Business Summary Program from 1985 through 1993. Technology was modeled as a single output, single composite input Cobb-Douglas function. The resultant supply function is the natural log of milk quantity as a function of the log of milk price to prices paid for all inputs, with a time trend added. Since random output shocks to each farm may have occurred in any of the nine data years, a dummy year variable was modeled sequentially for each year for each farm. Ignoring 12 negative estimates, elasticities averaged .65. Pooling the data with a fixed effects model produced an elasticity estimate of .47. A geometric lag pooled model produced a short-run elasticity of .2 and a long-run supply elasticity of 1.00 using instrumental variables, but an OLS short-run elasticity of .25 and long-run elasticity of .64.
On the spectrum of a Schroedinger operator perturbed by a fast oscillating potential
Creators: name: Borisov, Denis I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the spectrum of a one-dimensional Schroedinger operator perturbed by a fast oscillating potential. The oscillation period is a small parameter. The essential spectrum is found in an explicit form. The existence and multiplicity of the discrete spectrum are studied. The complete asymptotics expansions for the eigenvalues and the associated eigenfunctions are constructed.
description: The article is written originally in Russian. Translation is made by the author. In the present version several typos occured in the previous one were corrected
On interference effects in top-philic decay chains
Creators: name: Atkinson, Oliver
name: Englert, Christoph
name: Stylianou, Panagiotis
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Sizeable exotic Higgs boson production through gluon fusion via top quark loops is correlated with large Higgs decay probabilities into top quark final states, if these are kinematically accessible. It is known that $gg\to S \to t\bar t$ is particularly susceptible to signal-background interference effects that can significantly impact discovery sensitivities. In such an instance, identifying more robust signatures to enhance the discovery sensitivity becomes necessary, shifting phenomenological focus to final states that show a reduced destructive signal-background interference. In this work, we discuss the phenomenological relevance of signal-signal and signal-background interference effects for decay chains. In particular, we identify asymmetric cascade decays in models of scalar extensions of the SM Higgs sector as new promising candidates. In parallel, characteristic interference patterns can provide a formidable tool for indirect CP spectroscopy of BSM sectors if a discovery is made in the future. This motivates associated searches at present and future colliders as robust discovery modes of new physics, in addition to serving as a sensitive tool for the reconstruction of the underlying UV electroweak potential.
description: 8 pages, 6 figures; v2: version published in PLB, 10 pages, 7 figures
SOCIAL IDENTITY AND MANIPULATIVE INTERHOUSEHOLD TRANSFERS AMONG EAST AFRICAN PASTORALISTS
Creators: name: Huysentruyt, Marieke
name: Barrett, Christopher B.
name: McPeak, John G.
name: Huysentruyt, Marieke
name: Barrett, Christopher B.
name: McPeak, John G.
Publisher: name: Unknown
Year: 2002
Subjects: Agribusiness

description: We model interhousehold transfers between nomadic livestock herders as the state-dependent consequence of individuals' strategic interdependence resulting from the existence of multiple, opposing externalities. A public good security externality among individuals sharing a social (e.g., ethnic) identity in a potentially hostile environment creates incentives to band together. Self-interested interhousehold wealth transfers from wealthier herders to poorer ones may emerge endogenously within a limited wealth space as a means to motivate accompanying migration by the recipient. The distributional reach and size of the transfer are limited, however, by a resource appropriation externality related to the use of common property grazing lands. When this effect dominates, it can induce distributionally regressive transfers from ex ante poor households who want to relieve grazing pressures caused by larger herds. As compared to the extant literature on transfers, our model appears more consistent with the limited available empirical evidence on heterogeneous and changing transfers patterns among east African pastoralists.
The proper motion of Andromeda from Gaia eDR3: confirming a nearly radial orbit
Creators: name: Salomon, J. -B.
name: Ibata, R.
name: Reylé, C.
name: Famaey, B.
name: Libeskind, N. I.
name: McConnachie, A. W.
name: Hoffman, Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present an analysis of the proper motion of the Andromeda galaxy (M31), based on the Early Third Data Release of the Gaia mission. We use the Gaia photometry to select young blue main sequence stars, and apply several quality cuts to obtain clean samples of these tracers. After correcting the proper motion measurements for the internal rotation of the M31 disk motion, we derive an apparent motion of 52.5 +/- 5.8 muas/yr with respect to the Gaia reference frame, or 61.9 +/- 9.7 muas/yr after applying a zero-point correction determined from quasars within 20 degrees from M31 and a correction from systemic biases. Accounting for the Solar reflex motion we deduce a relative velocity between Andromeda and the Milky way (in a non-rotating frame at the current location of the Sun) of 42.2 +/- 39.3 km/s along right ascension (40.0 +/- 39.3 km/s along galactic longitude) and -59.4 +/- 30.3 km/s along declination (-60.9 +/- 30.3 km/s along galactic latitude), with a total transverse velocity of V_trans = 82.4 +/- 31.2 km/s. These values are consistent with (but more accurate than) earlier Hubble Space Telescope measurements that predict a future merger between the two galaxies. We also note a surprisingly large difference in the derived proper motion between the blue stars in M31 and samples of red stars that appear to lie in that galaxy. We propose several hypotheses to explain the discrepancy but found no clear evidence with the current data to privilege any one of them.
description: 10 pages, 7 figures, Accepted for publication in MNRAS
Tylimanthus tenellus var. diversifolius J. J. Engel
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Jungermanniopsida
Jungermanniales
Acrobolbaceae
Tylimanthus
Tylimanthus tenellus
Tylimanthus tenellus var. diversifolius (e.a.hodgs.) j.j.engel

description: Tylimanthus tenellus var. diversifolius (E.A.Hodgs.) J.J.Engel,
Nova Hedwigia 93 (3–4): 403, 2011 (see Engel 2011). BASIONYM: Tylimanthus diversifolius E.A.Hodgs., Trans. & Proc. Roy. Soc. New Zealand 85 (4): 575, 1958 (see Hodgson 1958).
NOTE: This variety also creates the autonym.
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 75, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
A Radio Pulsar Spinning at 716 Hz
Creators: name: Hessels, Jason W. T.
name: Ransom, Scott M.
name: Stairs, Ingrid H.
name: Freire, Paulo C. C.
name: Kaspi, Victoria M.
name: Camilo, Fernando
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have discovered a 716-Hz eclipsing binary radio pulsar in the globular cluster Terzan 5 using the Green Bank Telescope. It is the fastest-spinning neutron star ever found, breaking the 23-year-old record held by the 642-Hz pulsar B1937+21. The difficulty in detecting this pulsar, due to its very low flux density and high eclipse fraction (~40% of the orbit), suggests that even faster-spinning neutron stars exist. If the pulsar has a mass less than 2 Msun, then its radius is constrained by the spin rate to be < 16 km. The short period of this pulsar also constrains models that suggest gravitational radiation, through an r-mode instability, limits the maximum spin frequency of neutron stars.
description: 8 pages, 1 figure. Accepted by Science. Published electronically via Science Express 12 Jan 2006
THE ECONOMICS OF POVERTY AND THE POVERTY OF ECONOMICS: A CHRISTIAN PERSPECTIVE
Creators: name: Barrett, Christopher B.
name: Barrett, Christopher B.
Publisher: name: Unknown
Year: 2003
Subjects: Food Security and Poverty

description: In this world of plenty, almost half of the world's six billion people live on two dollars a day or less and the number living on less than one dollar a day has increased over the past fifteen years (World Bank 2000). Between one third and one half suffer under nutrition due to insufficient intake of calories, protein or critical micronutrients such as vitamin A, iodine and iron. More than one child in five lives in acute poverty. Why does such unnecessary injustice continue to disfigure a rich, technologically advanced world and what can be done to care for the poor and thereby to care for and honor God, as the Gospels instruct us? In attempting to answer those questions, at least partly, this paper offers some insights from recent research in economics, as well as my concerns about the limits to economic understanding of these humanitarian, intellectual and spiritual challenges.
The North Fraser River greenway : using greenway design as a tool for industrial retention, environmental restoration, and public integration along a working waterway
Creators: name: Mikkelsen, Dale R.
Publisher: name: University of British Columbia
Year: 2009

description: The north shore of the North Arm of the Fraser River represents the Southern boundary of the City of Vancouver. This boundary has been crucial to the development of Vancouver as a city that strives on natural resource processing and shipping. This industrial heritage along the North Fraser has provided Vancouver with a substantial portion of its revenue and tax base since the 1800's, but is currently under threat by land developers and residential pressures. With this development pressure comes the increased lure of immediate revenue, increased public use of the waterfront, and an increase in market housing within the city limits. However, this pressure will also result in a loss of economic sustainability and long-term revenue dollars. This is a trend that is occurring throughout the lower mainland, encouraging a commuter environment and a dissociation between place of work and place of residence. This thesis seeks to combat this issue and will illustrate that it is not only desirable, but necessary to sustain urban resource-based industry along the North Fraser. Through the implementation of a Greenway design, the thesis will prove that the portion of the North Fraser that lies between the Knight Street Bridge and the Oak Street Bridge can retain its industrial character, while becoming more inclusive of the cultural/social needs of a growing population and recognizing environmental concerns. The implementation of a public recreational Greenway will enhance the quality of the area, thereby drawing users both within and beyond the surrounding community to take advantage of a great resource that is often forgotten or hidden by intensive industrial frontage. At the same time, the Greenway will provide opportunities for education and awareness that will highlight the values and benefits of an industrial infrastructure along the North Fraser. Finally, the thesis will prove that such an endeavour is not only sustainable in a cultural and economic sense, but that a Greenway has the capacity to provide a rehabilitated ecological condition that will sustain a valuable and fragile ecosystem.
Studying explicit $U(1)_A$ symmetry breaking in hot and magnetised two flavour non-local NJL model constrained using lattice results
Creators: name: Ali, Mahammad Sabir
name: Islam, Chowdhury Aminul
name: Sharma, Rishi
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the two flavour non-local Nambu\textemdash Jona-Lasinio (NJL) model in the presence of a magnetic field and explore the chiral crossover in presence of a non-local form of the 't Hooft determinant term. Its coupling is governed by a dimensionless parameter $c$. This term is responsible for the explicit breaking of $U(1)_A$ symmetry. We have attempted a systematic analysis of the model parameters by fitting to self-consistent lattice QCD calculations. Three parameters of the model are fixed by $eB=0$ results from published lattice QCD on the chiral condensate, the pion decay constant ($F_π$), and the pion mass ($m_π$). The difference of the $u$ and $d$ quark condensates in the presence of a magnetic field ($eB$) is quite sensitive to $c$ and we fix $c$ using published lattice QCD results for this observable. We see no evidence that $c$ depends on $eB$. The crossover temperature decreases with increasing $eB$ only for condensate values at the lower end of the allowed values (as already seen in~\cite{Pagura:2016pwr}) and $F_π$ at the upper end of the allowed values. We further check our model predictions by calculating the topological susceptibility with the fitted $c$ values and comparing it with lattice results. Since the topological susceptibility is related to the extent of the $U(1)_A$ symmetry breaking, we find that it is sensitive to the value of $c$.
description: 24 pages, 13 captioned figures, Results substantially improved: now we have a better prediction for the 't Hooft determinant strength
An Ordered Tobit Model of Market Participation: Evidence from Kenya and Ethiopia
Creators: name: Bellemare, Marc F.
name: Barrett, Christopher B.
name: Bellemare, Marc F.
name: Barrett, Christopher B.
Publisher: name: Unknown
Year: 2005
Subjects: Industrial Organization

description: Do rural households in developing countries make market participation and volume decisions simultaneously or sequentially? This article develops a two-stage econometric model that allows testing between these two competing hypotheses regarding household-level market behavior. The first stage models the household's choice of whether to be a net buyer, autarkic, or a net seller in the market. The second stage models the quantity bought (sold) for net buyers (sellers) based on observable household characteristics. Using household data from Kenya and Ethiopia on livestock markets, we find evidence in favor of sequential decision-making, the welfare implications of which we discuss.
Semiclassical Strings, Dipole Deformations of N=1 SYM and Decoupling of KK Modes
Creators: name: Bobev, N. P.
name: Dimov, H.
name: Rashkov, R. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we investigate the recently found $γ$-deformed Maldacena-Nunez background by studying the behavior of different semiclassical string configurations. This background is conjectured to be dual to dipole deformations of $\N=1$ SYM. We compare our results to those in the pure Maldacena-Nunez background and show that the energies of our string configurations are higher than in the undeformed background. Thinking in the lines of (hep-th/0505100) we argue that this is an evidence for better decoupling of the Kaluza-Klein modes from the pure SYM theory excitations. Moreover we are able to find a limit of the background in which the string energy is independent of $γ$, these strings are interpreted as corresponding to pure gauge theory effects.
description: 31 pages, references added, new solutions in Section 7 presented, an appendix added, to appear in JHEP
Constraints on discrete global symmetries in quantum gravity
Creators: name: Ali, Passant
name: Eichhorn, Astrid
name: Pauly, Martin
name: Scherer, Michael M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The question whether global symmetries can be realized in quantum-gravity-matter-systems has far-reaching phenomenological consequences. Here, we collect evidence that within an asymptotically safe context, discrete global symmetries of the form $\mathbb{Z}_n$, $n>4$, cannot be realized in a near-perturbative regime. In contrast, an effective-field-theory approach to quantum gravity might feature such symmetries, providing a mechanism to generate mass hierarchies in the infrared without the need for additional fine-tuning.
description: 27 pages, 10 figures. v2: matches published version
Farm Level Adjustment in Ireland Following Decoupling
Creators: name: Hennessy, Thia C.
name: Kelly, Paul W.
name: Breen, James P.
name: Hennessy, Thia C.
name: Kelly, Paul W.
name: Breen, James P.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Agricultural and Food Policy
subject: adjustment
subject: policy
subject: logit function
subject: labour allocation

description: The paper is a case study of how the Luxembourg Agreement of the Mid-Term Review of the Common Agricultural Policy may affect the structure of dairy and beef farming in the Republic of Ireland over the period 2002 to 2012. It describes the process used to assess some structural implications of a policy change. The data source for the paper is the Irish National Farm Survey. Prices of inputs and outputs following the policy change are obtained from a dynamic partial equilibrium model of the agricultural sector. Linear Programming is used to calculate the maximum profit on different farm types. Labour allocation on farms is estimated using a logit function. Exit from dairy production is also estimated. Some example results on dairy and beef farms are presented.
Vitalianthus guangxianus R. L. Zhu, Qiong He et Y. M. Wei, J. Bryol.
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Jungermanniopsida
Porellales
Lejeuneaceae
Vitalianthus
Vitalianthus guangxianus

description: Vitalianthus guangxianus R.L.Zhu, Qiong He et Y.M.Wei,
J. Bryol. 34 (1): 32, 2012 (see He et al. 2012b).
TYPE: “ China. Guangxi, Shangsi Co., Pinglongshan, 21°50’398’N, 107°52’345’E, on tree branches, mixed with Brotherella Loeske ex M.Fleish. sp., Radula oyamensis Steph., and R. tjibodensis K.I.Goebel, 513 m, 17 Feb. 2011, Yu-Mei Wei 20110217-24 (holotype: HSNU!)”.
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 75, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
Understanding widely scattered traffic flows, the capacity drop, platoons, and times-to-collision as effects of variance-driven time gaps
Creators: name: Treiber, Martin
name: Kesting, Arne
name: Helbing, Dirk
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We investigate the adaptation of the time headways in car-following models as a function of the local velocity variance, which is a measure of the inhomogeneity of traffic flow. We apply this mechanism to several car-following models and simulate traffic breakdowns in open systems with an on-ramp as bottleneck. Single-vehicle data generated by several 'virtual detectors' show a semi-quantitative agreement with microscopic data from the Dutch freeway A9. This includes the observed distributions of the net time headways and times-to-collision for free and congested traffic. While the times-to-collision show a nearly universal distribution in free and congested traffic, the modal value of the time headway distribution is shifted by a factor of about two in congested conditions. Macroscopically, this corresponds to the 'capacity drop' at the transition from free to congested traffic. Finally, we explain the wide scattering of one-minute flow-density data by a self-organized variance-driven process that leads to the spontaneous formation and decay of long-lived platoons even for deterministic dynamics on a single lane.
description: Submitted to Phys. Rev. E
Tensor Data Scattering and the Impossibility of Slicing Theorem
Creators: name: Pan, Wuming
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This paper proposes a standard way to represent sparse tensors. A broad theoretical framework for tensor data scattering methods used in various deep learning frameworks is established. This paper presents a theorem that is very important for performance analysis and accelerator optimization for implementing data scattering. The theorem shows how the impossibility of slicing happens in tenser data scattering. A sparsity measuring formula is provided, which can effectively indicate the storage efficiency of sparse tensor and the possibility of parallelly using it. The source code, including CUDA code, is provided in a related open-source project.
Webinar to introduce FAIR-IMPACT's final open call for financial support
Creators: name: Davidson, Joy
Publisher: name: Zenodo
Year: 2024

description: This webinar took place on October 9th from 14:00 to 15:00 CEST and offered an overview of the support actions available for joining FAIR-IMPACT's final open call for financial support.

During the session, attendees learned about the various support actions, the financial assistance offered for each, and the application process. The hour-long webinar also outlined the expectations for applicants, highlighting the specific skills and expertise required for participation in each opportunity. Additionally, there was a Q&A segment for participants to ask questions.

Visit the official page.
Fisher Information Matrix of General Stable Distributions Close to the Normal Distribution
Creators: name: Matsui, Muneya
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62B10

description: We investigate behavior of the Fisher information matrix of general stable distributions. DuMouchel (1975, 1983) proved that the Fisher information of characteristic exponent αdiverges to infinity as αapproaches 2. Nagaev and Shkol'nik (1988) made more detailed analysis and derived asymptotic behavior of the Fisher information matrix of αdiverging to infinity as αapproaches 2 in the symmetric case. Extending their work in this paper we have obtained behavior of the Fisher information matrix of general stable distributions as αapproaches 2 by detailed study of behavior of the corresponding density and its score functions. We clarify the limiting values of the 4*4 Fisher Information matrix with respect to the location μ, the scale σ, the characteristic exponent αand the skewness parameter β.
description: 26 pages
Securing Mobile Multiuser Transmissions with UAVs in the Presence of Multiple Eavesdroppers
Creators: name: Abdalla, Aly Sabri
name: Marojevic, Vuk
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper discusses the problem of securing the transmissions of multiple ground users against eavesdropping attacks. We propose and optimize the deployment of a single unmanned aerial vehicle (UAV), which serves as an aerial relay between the user cluster and the base station. The focus is on maximizing the secrecy energy efficiency by jointly optimizing the uplink transmission powers of the ground users and the position of the UAV. The joint optimization problem is nonconvex; therefore we split it into two subproblems and solve them using an iterative algorithm.
Bethe Ansatz for a Quantum Supercoset Sigma Model
Creators: name: Mann, Nelia
name: Polchinski, Joe
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study an integrable conformal OSp(2m + 2|2m) supercoset model as an analog to the AdS_5 X S^5 superstring world-sheet theory. Using the known S-matrix for this system, we obtain integral equations for states of large particle density in an SU(2) sector, which are exact in the sigma model coupling constant. As a check, we derive as a limit the general classical Bethe equation of Kazakov, Marshakov, Minahan, and Zarembo. There are two distinct quantum expansions around the well-studied classical limit, the lambda^{-1/2} effects and the 1/J effects. Our approach captures the first type, but not the second.
description: 30 pages, 1 figure, v2: references added
Adjustment in Mexico's Crop Sector to Some Policy Changes Implemented in the 1990's
Creators: name: Dewbre, Joe
name: Dewbre, Joe
Publisher: name: Unknown
Year: 2003
Subjects: Agricultural and Food Policy
Crop Production/Industries

description: This paper contains analysis of potential effects of changes in the structure of farm support resulting from policy change in Mexico undertaken over the period 1989 to 2002. The analysis is based on observed changes in the level and composition of support as measured for the PSE. This information is used together with a model of Mexico's crop sector, the PEM, to derive predictions of policy effects and their implications for adjustment. These predictions are then compared with data revealing trends in crop production, yields, farm employment and purchased input use. The paper concludes that policy changes were a significant contributory factor to crop sector adjustment, but that other factors must have been at play as well.
On q-Euler numbers, q-Salie numbers and q-Carlitz numbers
Creators: name: Pan, Hao
name: Sun, Zhi-Wei
Publisher: name: arXiv
Year: 2005
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B65; 05A30; 11A07; 11B68

description: Let $(a;q)_n=\prod_{0\le k
description: 19 pages