cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
U-duality extension of Drinfel'd double
Creators: name: Sakatani, Yuho
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A family of algebras $\mathcal{E}_n$ that extends the Lie algebra of the Drinfel'd double is proposed. This allows us to systematically construct the generalized frame fields $E_A{}^I$ which realize the proposed algebra by means of the generalized Lie derivative, i.e., $\hat{\mathcal{L}}_{E_A}E_B{}^I = - \mathcal{F}_{AB}{}^C\,E_C{}^I$. By construction, the generalized frame fields include a twist by a Nambu-Poisson tensor. A possible application to the non-Abelian extension of U-duality and a generalization of the Yang-Baxter deformation are also discussed.
description: 34 pages; v2: references added, expanded the discussion of the Yang-Baxter deformation; v3: a reference added, typos corrected, to appear in PTEP; v4: footnotes 5 and 8 added, a redundant condition in Eq.(6.20) removed
Penenirmus albiventris
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Penenirmus
Penenirmus albiventris

description: Penenirmus albiventris (Scopoli, 1763)
 Report: [1] Balát (1958).
 Host: Troglodytes troglodytes (L.) [1].
 Distribution in Bulgaria: Rila monastery [1].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 33, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
A new first order formalism for k-supersymmetric Born Infeld actions: the D3-brane example
Creators: name: Fré, Pietro
name: Modesto, Leonardo
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We introduce a new first order formulation of world-volume actions for p-branes with k-supersymmetry. In this language, which involves more auxiliary fields compensated by more local symmetries, the action is provided by a very compact, simple and elegant formula applicable to any supergravity background. The k-supersymmetry variation against which it is invariant is obtained from the bulk supersymmetries by means of a projector that has a simple expression in terms of the auxiliary fields. The distinctive feature of our formalism is that all fermion fields are hidden into the definition of the curvatures and the action is formally the same, in terms of these differential forms as it would be in a purely bosonic theory. Typically our new formulation enables one to discuss the correct boundary actions for non trivial supergravity Dp-brane bulk solutions like the D3-brane solution on smooth ALE manifolds with flux recently constructed in the literature
description: 31 pages, latex, added some references
Dolan-Grady Relations and Noncommutative Quasi-Exactly Solvable Systems
Creators: name: Klishevich, Sergey M.
name: Plyushchay, Mikhail S.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate a U(1) gauge invariant quantum mechanical system on a 2D noncommutative space with coordinates generating a generalized deformed oscillator algebra. The Hamiltonian is taken as a quadratic form in gauge covariant derivatives obeying the nonlinear Dolan-Grady relations. This restricts the structure function of the deformed oscillator algebra to a quadratic polynomial. The cases when the coordinates form the su(2) and sl(2,R) algebras are investigated in detail. Reducing the Hamiltonian to 1D finite-difference quasi-exactly solvable operators, we demonstrate partial algebraization of the spectrum of the corresponding systems on the fuzzy sphere and noncommutative hyperbolic plane. A completely covariant method based on the notion of intrinsic algebra is proposed to deal with the spectral problem of such systems.
description: 25 pages; ref added; to appear in J. Phys. A
Model Policy on Open Science for Research Performing Organisations (RPOs)
Creators: name: Angelaki, Marina
Publisher: name: Zenodo
Year: 2018
Subjects: Open Science
policy template
RPOs

description: The model policy has been prepared as part of a toolkit for policy makers on Open Science and Open Access in the context of the EU-funded OpenAIRE Advance project that aims to support Open Access/ Open Data mandates in Europe. The proposed policy draws heavily on the UNESCO Open Access policy development guidelines, the MedOANet guidelines for Open Access, PASTEUR4OA Toolkit and Policy Guidelines, the RECODE project policy recommendations for Open Access policies to research data, the LEARN project Model Research Data Management Policy, the policy working group of the EOSC Pilot project, and the SPARC Europe report on Open Data and Open Science policies in Europe.
Twisted tensor products of n-groupoids and crossed complexes
Creators: name: Heyam K. H. Alkhayyat
Publisher: name: University of Leicester
Year: 2019
Subjects: Uncategorized

description: For any 1-reduced simplicial setX, we define a crossed complex of groups PCrsX, which we define as a twisted tensor product of the crossed cobar construction ΩCrsX and thef undamental crossed complexπX. In fact, we prove that PCrsXis contractible. Therefore PCrsXis a crossed complex model for the path space ofX. It is also an example of a crossed complex model of the total space of a fibration, ΩX−→PX−→X.This generalises from chain complexes to crossed complexes the theorem proved by J.F. Adams, and P. J. Hilton in their paper [3]. Our definition of twisted tensor products of crossed complexes also defines a twisted tensor product of n-groupoids, for all n. This comes from the fact that there is an equivalence of categories (∞-groupoids←→crossed complexes) which was proved by R. Brown and P. J. Higgins in their paper [12].We recall the classical Eilenberg-Zilber theorem for chain complexes, and its generalisation for crossed complexes, which show that the tensor product provides an algebraic model forthe Cartesian product of the fibration X−→X×Y−→Y.We also extend our theorems to 0-reduced simplicial sets X. In this case we generalise the crossed cobar construction ΩCrsX from 1-reduced simplicial sets to the group-completed crossed cobar constructionˆΩCrsXfor 0-reduced simplicial sets and define a crossed complex of groupoids PCrsX, a twisted tensor product with the twisted boundary maps∂Pn:PCrsnX= (ˆΩCrsX⊗φπX)n−→PCrsn−1= (ˆΩCrsX⊗φπX)n−1, ∂2= 0.We end by defining a contracting homotopy {ηn:PCrsnX→PCrsn+1X}which shows that this crossed complex of groupoids is still a model for the path space onX.
Institutional Demand for Locally-Grown Food in Vermont: Marketing Implications for Producers and Distributors
Creators: name: Becot, Florence
name: Conner, David
name: Nelson, Abbie
name: Buckwalter, Erin
name: Erickson, Daniel
name: Becot, Florence
name: Conner, David
name: Nelson, Abbie
name: Buckwalter, Erin
name: Erickson, Daniel
Publisher: name: Unknown
Year: 2014
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business

description: Institutional food service operations have shown increasing interest in locally grown foods, and are providing a business opportunity for farmers and distributors. The purpose of this paper is to present and discuss the results and implications of a survey assessing institutional food service operations in Vermont. We used the 4 P’s (price, product, place, and promotion) Marketing Mix framework to highlight marketing strategies for farmers and distributors wanting to increase their sales of local food to institutions.
A Systematic Approach to Fingerprint Identification via Source Probabilities
Creators: name: Pillin, Etienne J. A.
Publisher: name: University of Leicester
Year: 2019
Subjects: Uncategorized

description: This research project was carried out under the INTREPID Forensics programme, a doctoral program involving 10 Ph.D. students in various fields applied to Forensic Science, and funded by the European Commission. The purpose of this project was to produce innovative methods of pattern recognition for fingerprint ridge lines in order to improve the reliability and the amenability of automatic fingerprint identification to the court. This research provides a preliminary but systematic and necessary approach to achieve this.First of all, the premise, software, and methodology for a data collection were developed for the purpose of a ground-truth database suitable for research and the training of identification algorithms. Two novel mathematical formulations of the fingerprint identification problem were made: source determination and source assessment. The latter provides a basis for the computation of source probabilities, namely the probability for two finger impressions to come from the same source, which is not considered sound. Despite current consensus, this thesis has established a new approach that proves that this can in fact be done in a mathematically justified manner.Finally, this research culminated with the development of feature detection algorithms that proceed by fitting a section of a fingerprint image by a function which locally models the ridge line accurately, and which demonstrated promising results. The fitting methods used rely on optimisation algorithms known as Estimation of Distribution Algorithms (EDAs), which have been generalised to the context of mixed-discrete optimisation, and implemented and applied to fingerprint feature detection.
Comparing measured and calculated local density of states in a disordered two-dimensional electron system
Creators: name: Morgenstern, M.
name: Klijn, J.
name: Meyer, Chr.
name: Roemer, R. A.
name: Wiesendanger, R.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The local density of states (LDOS) of the adsorbate induced two-dimensional electron system (2DES) on n-InAs(110) is studied by low-temperature scanning tunneling spectroscopy. In contrast to a similar 3DES, the 2DES LDOS exhibits 20 times stronger corrugations and rather irregular structures. Both results are interpreted as a consequence of weak localization. Fourier transforms of the LDOS reveal that the k-values of the unperturbed 2DES still dominate the 2DES, but additional lower k-values contribute significantly. To clarify the origin of the LDOS patterns, we measure the potential landscape of the same 2DES area allowing to calculate the expected LDOS from the single particle Schr"odinger equation and to directly compare it with the measured one.
description: to be published in the Proceedings (Physica B/C/E) of the 23rd International Conference on Low Temperature Physics
Penenirmus buresi Balat 1958
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Penenirmus
Penenirmus buresi

description: Penenirmus buresi Balát, 1958
 Reports: [1] Balát (1958); [2] Touleshkov (1964a).
 Hosts: Emberiza hortulana L. [1]; E. melanocephala Scopoli [1, 2].
 Distribution in Bulgaria: Sliven, Burgas, Petrich, Maslen Nos Cape, Ropotamo [1]; Ognyanovo (Pazardzhik Region) [2].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 34, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
Baryon -- anti-Baryon Photoproduction
Creators: name: Li, Hao
name: Schumacher, Reinhard A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Baryon - anti-baryon photoproduction off a proton target is being studied in detail at Jefferson Lab with the GlueX Experiment. We observe $p\bar{p}$ and, for the first time, $Λ\barΛ$ photoproduction (with $Λ\rightarrow π^- p$, $\barΛ \rightarrow π^+ \bar{p}$) from thresholds up to $E_γ = 11.4$ GeV. Preliminary spectra from data accumulated during the GlueX Phase-I period are shown. Angular distributions of the photoproduced hyperons indicate more than one production mechanism in the reaction channel $γp \rightarrow Λ\barΛp$. A Monte Carlo simulation with four mechanisms, tested through comparison between simulation and experimental data, is presented.
description: 8 pages, 13 figures, MENU 2019 conference proceedings
Analysis of Factors Influencing Agritourism Businesses Perceptions about Expansion
Creators: name: Jensen, Kimberly L.
name: Bruch Leffew, Megan
name: Menard, R. Jamey
name: English, Burton C.
name: Jensen, Kimberly L.
name: Bruch Leffew, Megan
name: Menard, R. Jamey
name: English, Burton C.
Publisher: name: Unknown
Year: 2014
Subjects: Agribusiness
Agricultural and Food Policy
Agricultural Finance

description: Agritourism can provide both on-farm recreational activities for visitors and educational activities showing how food is produced. It can help farmers diversify and add income to their operations. This study assesses how characteristics of agritourism operations and perceived barriers may influence future plans to expand using a logit model. This information will be useful to policymakers and economic development professionals, as they look for contributors to future growth in the agritourism sector, as well as special assistance needs by expansion-minded firms.
title: 03_0875
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Non-perturbative gluons in diffractive photo-production of J/Psi
Creators: name: Ducati, M. B. Gay
name: Sauter, Werner K.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The modifications induced in the calculation of the cross section of the diffractive process gamma gamma -> J/Psi J/Psi when the gluon propagator is changed are analyzed. Instead of the usual perturbative gluon propagator, alternative forms obtained using non-perturbative methods like Dyson-Schwinger equations are used to consider in a more consistent way the contributions of the infrared region. The result shows a reduction in the differential cross-section for low momentum transfer once compared with the perturbative result, to be confirmed with future experimental results from TESLA.
description: 17 pages, 5 figures, RevTex, Accepted for publication in Phys. Lett. B
Penenirmus hibari
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Penenirmus
Penenirmus hibari

description: Penenirmus hibari (Uchida, 1949)
 Report: [1] Touleshkov (1961a).
 Synonym: Penenirmus impunctus Blagoveshtchensky [1].
 Host: Alauda arvensis L. [1].
 Distribution in Bulgaria: Gramatikovo (Burgas Region), Malko Tarnovo [1].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 34, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
An Empirical Assessment of Consumers’ Preferences for Coffee
Creators: name: Jones, Eugene
name: Jones, Eugene
Publisher: name: Unknown
Year: 2014
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Productivity Analysis

description: This study examines the purchasing behavior of inner-city and suburban shoppers for more than 265 brands and varieties of coffee. Weekly data for the 2011 calendar year are used for this study and these data represent purchases of shoppers in four stores in Columbus, Ohio. A national supermarket chain provided the data from a common price zone, meaning identical prices across all stores. The major premise of the research is that inner-city shoppers will show greater price-sensitivity toward the purchase of all brands of coffee.
$\frac{1}{2}$ Calabi-Yau 3-folds, Calabi-Yau 3-folds as double covers, and F-theory with U(1)s
Creators: name: Kimura, Yusuke
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this study, we introduce a new class of rational elliptic 3-folds, which we refer to as "1/2 Calabi-Yau 3-folds". We construct elliptically fibered Calabi-Yau 3-folds by utilizing these rational elliptic 3-folds. The construction yields a novel approach to build elliptically fibered Calabi-Yau 3-folds of various Mordell-Weil ranks. Our construction of Calabi-Yau 3-folds can be considered as a three-dimensional generalization of the operation of gluing pairs of 1/2 K3 surfaces to yield elliptic K3 surfaces. From one to seven $U(1)$s form in six-dimensional $N=1$ F-theory on the constructed Calabi-Yau 3-folds. Seven tensor multiplets arise in these models.
description: 22 pages. Some changes in section 4, section 5 expanded, and some clarifications. References added
Penenirmus patevi Balat 1958
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Penenirmus
Penenirmus patevi

description: Penenirmus patevi Balát, 1958
 Report: [1] Balát (1958).
 Host: Anthus campestris (L.) [1].
 Distribution in Bulgaria: Sliven [1].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 34, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
Model Policy on Open Science for Research Funding Organisations (RFOs)
Creators: name: Angelaki, Marina
Publisher: name: Zenodo
Year: 2018
Subjects: Open Science
policy template
RFOs

description: The model policy has been prepared as part of a Toolkit for policy makers on Open Science and Open Access in the context of the EU-funded project OpenAIRE Advance which supports Open Access/ Open Data mandates in Europe. The proposed policy draws heavily on the UNESCO Open Access policy development guidelines, the MedOANet guidelines for Open Access, PASTEUR4OA Toolkit for Research Funders and Policy Guidelines for Funders, the RECODE project policy recommendations for Open Access policies to research data, the LEARN project Model Research Data Management Policy, the policy working group of the EOSC Pilot project, and the SPARC Europe report on Open Data and Open Science policies in Europe.
Effect of mechanical strain on the optical properties of nodal-line semimetal ZrSiS
Creators: name: Zhou, Weiqing
name: Rudenko, A. N.
name: Yuan, Shengjun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Optical properties of nodal-line semimetal ZrSiS are studied using first-principles calculations. Frequency-independent optical conductivity is a fingerprint of the infrared optical response in ZrSiS. We find that this characteristic feature is robust with respect to uniaxial compressive strain of up to 10 GPa, yet with the flat region being narrowed with increasing strain. Upon uniaxial tensile stress of 2 GPa, the Fermi surface undergoes a Lifshitz transition accompanied by a weakening of the interband screening, which reduces the spectral weight of infrared excitations. We also show that the high-energy region is characterized by low-loss plasma excitations at $\sim$20 eV with essentially anisotropic dispersion. Strongly anisotropic dielectric properties suggest the existence of a hyperbolic regime for plasmons in the deep ultraviolet range. Although the frequencies of high-energy plasmons are virtually unaffected by external uniaxial deformation, their dispersion can be effectively tuned by strain.
Bose-Einstein Condensation on inhomogeneous networks: mesoscopic aspects versus thermodynamic limit
Creators: name: Buonsante, P.
name: Burioni, R.
name: Cassi, D.
name: Vezzani, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study the filling of states in a pure hopping boson model on the comb lattice, a low dimensional discrete structure where geometrical inhomogeneity induces Bose-Einstein condensation (BEC) at finite temperature. By a careful analysis of the thermodynamic limit on combs we show that, unlike the standard lattice case, BEC is characterized by a macroscopic occupation of a finite number of states with energy belonging to a small neighborhood of the ground state energy. Such remarkable feature gives rise to an anomalous behaviour in the large distance two-point correlation functions. Finally, we prove a general theorem providing the conditions for the pure hopping model to exhibit the standard behaviour, i.e. to present a macroscopic occupation of the ground state only.
description: 8 pages, 5 eps figures, to appear in Phys. Rev. B 66
Black hole production and Large Extra Dimensions
Creators: name: Cheung, Kingman
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Black hole (BH) production at colliders is possible when the colliding energy is above the Planck scale, which can effectively be at TeV scale in models of large extra dimensions. In this work, we study the production of black holes at colliders and discuss the possible signatures. We point out the ``$ij\to {\rm BH}+ $ others'' subprocesses, in which the BH and other SM particles are produced with a large transverse momentum. When the BH decays, it gives a signature that consists of particles of high multiplicity in a boosted spherical shape on one side of the event and a few number of high $p_T$ partons on the other side, which provide very useful tags for the event.
description: 4 pages, constraint of entropy is included and cross sections changed, some new references are added
Phractocephaline catfishes from the late Miocene of Argentina, with the description of a new taxon
Creators: name: Bogan, Sergio
name: Agnolín, Federico L.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Molecular Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: The fossil record of ‘phractocephaline’ catfishes in South America is relatively rich. The extinct species Phractocephalus ivy Azpelicueta and Cione, 2016, was named on the basis of diverse material coming from late Miocene beds of Paraná City, Argentina. A review of the holotype specimen described by those authors allows us to recognize that the individual may be referred to the extant genus Steindachneridion; thus, we propose the new taxonomic combination Steindachneridion ivy. Furthermore, part of the material described by previous authors may be effectively included within Phractocephalus. In this sense, the finding of new specimens in paleontological collections allows us to refer all these specimens to a new, previously unrecognized Phractocephalus species. The fossil record of ‘phractocephalines’ in the Paraná paleobasin indicates that the area played an important role in the evolution of this clade of basal pimelodids.
Limitations of squeezing due to collisional decoherence in Bose-Einstein condensates
Creators: name: Gasenzer, T.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the limitations for entanglement due to collisional decoherence in a Bose-Einstein condensate. Specifically we consider relative number squeezing between photons and atoms coupled out from a homogeneous condensate. We study the decay of excited quasiparticle modes due to collisions, in condensates of atoms with one or two internal degrees of freedom. The time evolution of these modes is determined in the linear response approximation to the deviation from equilibrium. We use Heisenberg-Langevin equations to derive equations of motion for the densities and higher correlation functions which determine the squeezing. In this way we can show that decoherence due to quasiparticle interactions imposes an important limit on the degree of number squeezing which may be achieved. Our results are also relevant for the determination of decoherence times in other experiments based on entanglement, e.g. the slowing and stopping of light in condensed atomic gases using dark states.
description: 16 pages RevTeX, 3 figures
Greenhouse Gas Emissions in New Zealand: A Preliminary Consumption-Based Analysis
Creators: name: Romanos, Carl
name: Kerr, Suzi
name: Will, Campbell
name: Romanos, Carl
name: Kerr, Suzi
name: Will, Campbell
Publisher: name: Unknown
Year: 2014
Subjects: subject: Environmental Economics and Policy
subject: Climate change
subject: emissions
subject: consumption
subject: household emissions

description: New Zealand’s per capita greenhouse gas emissions are usually calculated by taking total emissions as reported under the Kyoto Protocol or the United Nations Framework Convention on Climate Change and simply dividing by population. However this focuses on emissions associated with production within New Zealand. From the point of view of individuals, these are not the emissions they control, and hence can mitigate. Individuals can calculate their “carbon footprint” but tools to do this typically focus on a few categories of emissions (mostly electricity, direct fuel use and waste) and emissions footprints are not available for a wide range of households so cannot be used for comparative analysis. This paper explores how the carbon emissions related to the consumption categories of households in New Zealand vary with household characteristics. We use product consumption data from the 2007 Household Economic Survey. Consumption within each category is linked to a carbon intensity multiplier (tonnes of carbon dioxide equivalent per dollar of consumption) which is derived from: the official 2007 input–output table of 106 industries produced by Statistics New Zealand; energy data on carbon dioxide per petajoule of fuel in each industry from the Energy Data File; and the Energy Greenhouse Gas Emissions Report both provided by the Ministry of Business, Innovation and Employment. Previous literature has used similar methods to calculate the incidence of a carbon tax (e.g. Creedy and Sleeman [2006]). This paper uses these methods in order to study which sectors of household expenditure offer the greatest opportunities for mitigation and how these opportunities vary with household characteristics such as income decile, region and household composition.
Mitigation and Heterogeneity in Management Practices on New Zealand Dairy Farms
Creators: name: Anastasiadis, Simon
name: Kerr, Suzi
name: Anastasiadis, Simon
name: Kerr, Suzi
Publisher: name: Unknown
Year: 2013
Subjects: subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: Marginal abatement cost curves
subject: climate change
subject: agriculture
subject: greenhouse gas
subject: heterogeneity
subject: leaching
subject: mitigation
subject: nitrogen
subject: use efficiency

description: Pastoral farming can result in adverse environmental effects such as nitrogen leaching and greenhouse gas emissions. However, the cost of mitigation and hence the socially appropriate level of tolerance for environmental effects is still unclear. Research to date within New Zealand has either estimated the costs of specific mitigation technologies or used simulation modelling at a farm scale. This is limited for two key reasons: neither approach uses data from actual implementation of technologies and practices on real farms and hence costs are speculative; and both largely treat farms as homogenous when in reality they vary greatly. We use data on 264 farms to estimate a distribution of “farm management” residuals in how efficiently nitrogen leaching and greenhouse gas are used to generate production. We interpret this distribution as a measure of the potential for feasible, relatively low-cost mitigation to take place as less efficient farmers move toward existing best practice. We can explain only 48% percent of the OVERSEER-modelled variation in New Zealand dairy farms’ nitrogen use efficiency based on geophysical factors, specific mitigation technologies and practices that move emissions across farms such as wintering off animals. This suggests a potentially large role for management factors and farmer skill. In contrast, OVERSEER-modelled variation in greenhouse gas use efficiency is more easily explained by the observable factors (73%) but the potential for mitigation through management changes is still not insignificant. Using management practices that are already in commercial use, this first study using this approach suggests that improvements in nitrogen use efficiency may be able to reduce leaching by more than 30 percent, while improvements in greenhouse gas use efficiency may be able to reduce emissions by more than 15 percent; the potential varies considerably across farms.
Legendre Equivalences of Spherical Boltzmann Machines
Creators: name: Genovese, Giuseppe
name: Tantari, Daniele
Publisher: name: arXiv
Year: 2019
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study either fully visible and restricted Boltzmann machines with sub-Gaussian random weights and spherical or Gaussian priors. We prove the free energies of the spherical and Gaussian models are related by a Legendre transformation. Incidentally our analysis brings also a new purely variational derivation of the free energy of the spherical models.
description: typos corrected
Bildungserfolg trotz Migrationshintergrund. Ressourcen von bildungserfolgreichen jungen Erwachsenen mit Migrationshintergrund in der Schweiz
Creators: name: Suter, Roman
Publisher: name: Universität Bern
Year: 2016
Subjects: 370 Education

description: Die Arbeit beschäftigt sich mit den familiären, schulischen, sozialen und indivi- duellen Ressourcen, die aus Sicht von bildungserfolgreichen Migrantinnen und Migranten zum Erreichen der Hochschul- bzw. Fachhochschulreife beigetragen haben. Vor dem Hintergrund der Schulleistungsforschung, psychologischer Modelle zur Erklärung von Bildungsentscheidungen und dem Resilienzkonzept wurden 41 Personen im Rahmen von leitfadengestützten problemzentrierten Interviews zu ihrer Bildungsbiografie befragt. Die Datenanalyse der transkribierten Interviews erfolgte im Rahmen einer inhaltlich strukturierenden qualitativen Inhaltsanalyse. Unter Einbezug von soziodemografischen Merkmalen der Stichprobe (Geschlecht, HISEI, ISCED, Migrationsstatus und besuchter Schultyp) wurden die qualitativen Ergebnisse weitergehenden Analysen zugeführt. Für den Bereich der Familie stellen sich die Orientierung an der Akkulturationsstrategie Integration, hohe Bildungsaspirationen der Eltern gekoppelt mit ausgeprägten schulischen Unterstützungsleistungen sowie vorhandene familiäre Vorbilder wie ältere Geschwister als zentrale Ressourcen für den Bildungserfolg der Befragten heraus. Im Bereich der schulischen Ressourcen schildern die Befragten gut durchmischte Klassen, ein positives Klassenklima sowie ein vertrauensvolles Verhältnis zu den Lehrpersonen als förderlich für ihre erfolgreiche Bildungsbiografie. Eine aktive Freizeitgestaltung im Sinne der Mitgliedschaft in Vereinen und dem Kontakt mit der einheimischen Bevölkerung sowie Kontakte mit anderen Personen mit Migrationshintergrund werden im Bereich der sozialen Ressourcen herausgestrichen. Hinsichtlich individueller Ressourcen verfügen die befragten Personen über gute Deutschkenntnisse, lernen primär aus Interesse an der Sache und verfügen über ein positives akademisches Selbstkonzept. Insgesamt wird die Familie als einflussreichste Ressource und Einflussfaktor für den Verlauf der eigenen Bildungsbiografie betrachtet.
Dynamical emergence of extra dimensions and warped geometries
Creators: name: Sfetsos, Konstadinos
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present four-dimensional gauge theories in Minkowski spacetime which effectively generate in certain energy regimes five-dimensional warped geometries whereas, in general, the fifth dimension is latticized. After discussing in detail several general aspects in such theories we present a number of exactly solvable examples. We also point out how a particular case, defined in an N-sided polygon and having a Z_N symmetry, has a similar realization in an appropriate supersymmetric setting with D3-branes.
description: 24 pages, latex.v2: references added and remark after eq. (54) erased.v3: extra details on the realizations of the lattice with D3-branes are included in sec. 4.v4: Nucl. Phys. B version
Network with Sub-Networks
Creators: name: Fuengfusin, Ninnart
name: Tamukoh, Hakaru
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We introduce network with sub-networks, a neural network which its weight layers could be detached into sub-neural networks during inference. To develop weights and biases which could be inserted in both base and sub-neural networks, firstly, the parameters are copied from sub-model to base-model. Each model is forward-propagated separately. Gradients from a pair of networks are averaged and, used to update both networks. Our base model achieves the test-accuracy which is comparable to the regularly trained models, while the model maintains the ability to detach weight layers.
Penenirmus pavlovskyi Blagoveshtschensky 1951
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Penenirmus
Penenirmus pavlovskyi

description: Penenirmus pavlovskyi Blagoveshtschensky, 1951
 Report: [1] Touleshkov (1974).
 Host: Galerida cristata (L.) [1].
 Distribution in Bulgaria: Godech [1].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 34, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
Additional file 1 of Systematic review and meta-analysis of the safety of chloroquine and hydroxychloroquine from randomized controlled trials on malarial and non-malarial conditions
Creators: name: Souza Botelho, Mayra
name: Bolfi, Fernanda
name: Leite, Renata Giacomini Occhiuto Ferreira
name: Leite, Mauro Salles Ferreira
name: Banzato, Luisa Rocco
name: Soares, Luiza Teixeira
name: Olivatti, Thaina Oliveira Felicio
name: Mangolim, Amanda Sampaio
name: Oliveira, Flávia Ramos Kazan
name: Abbade, Luciana Patrícia Fernandes
name: Abbade, Joelcio Francisco
name: de Barros Almeida, Ricardo Augusto Monteiro
name: Simões Corrêa Galendi, Julia
name: Thabane, Lehana
name: dos Santos Nunes-Nogueira, Vania
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Biotechnology
Science Policy

description: Additional file 1.
Contract-farming in staple food chains: the case of rice in Benin
Creators: name: Vande Velde, Katrien
name: Maertens, Miet
name: Vande Velde, Katrien
name: Maertens, Miet
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Food Security and Poverty
subject: contract-farming
subject: vertical coordination
subject: staple food chains
subject: rice
subject: Benin

description: Supply chain upgrading in domestic and staple food chains in developing countries is important for a more efficient supply to growing urban markets. Little research is done on institutional innovations, such as contract-farming, in these chains. Research on the impact of smallholder contract-farming largely focuses on export-oriented high-value commodities. In this paper, we assess the welfare implications of smallholder contract-farming in the rice sector in Benin, using farm-household survey data and applying propensity score matching and difference-in-difference estimation. We find that contract-farming is associated with higher rice incomes, higher yields, higher input use, increased commercialization and higher farm-gate prices.
The Impact of Crude Oil Stocks Change Announcements on Crude Oil Price Volatility.pdf
Creators: name: Faseli, Omid
name: Mehrzad Zamani
Publisher: name: figshare
Year: 2019
Subjects: subject: 140303 Economic Models and Forecasting
subject: FOS: Economics and business
subject: Economics
subject: 140207 Financial Economics

description: Abstract. This interdisciplinary study focuses on the impact of financial news announcements on crude oil price volatility. The information released by free Open web API Services is increasing rapidly. So far the correlation between oil price and news announcements was described based on daily crude oil closing prices. Localizing the exact starting point of increasing volatility requires intraday price changes. We propose an interdisciplinary IT-method to extract intraday crude oil price data from Open web API Services to capture the exact effect of the US inventory announcements at the time of news arrival. Intraday data in 30minutes intervals were applied. We found that volatility decreases before the arrival of the announcement and increases afterwards. For capturing the effect of unexpected amount of change in inventory, the difference between real and expected amount of change was introduced in the model and is statistically significant. Further studies on this issue will be performed.
THE ROLE OF IRRIGATION IN DEVELOPMENT OF AGRICULTURE IN SREM DISTRICT
Creators: name: Mihailović, Branko
name: Cvijanović, Drago
name: Milojević, Ivan
name: Filipović, Milorad
name: Mihailović, Branko
name: Cvijanović, Drago
name: Milojević, Ivan
name: Filipović, Milorad
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: irrigation
subject: agricultural development
subject: competitiveness
subject: efficiency

description: Applying irrigation get high production results and economics of investments in irrigation systems points out that this measure in agricultural production should be given a priority. By irrigation can stabilize, i.e. increase food production and encourage the development of livestock breeding, processing and other branches of economy in the region of Vojvodina and Srem area. Accordingly, the basic goals of the research are: 1) evaluation of factors of agricultural development with the analysis of impact to the planned construction and exploitation of the irrigation system, 2) market aspects of establishing the irrigation system with water of Srem region, 3) evaluation of market efficiency of agricultural production and 4) defining approach for determination of a new sowing structure under irrigation. Research has shown that irrigation increases the agricultural production efficiency, there makes impact to sowing structure change, and the market surpluses on the international market can be sold, by using the existing international agreements, signed by the Republic of Serbia. However, besides a great potential in the sector of agricultural production, as the result of favourable climatic conditions, natural land characteristics and available water resources, signed agreements on free trade – the potentials in agro-food sector have not been sufficiently used.
description: Review Article
Ghost-Matter Mixing and Feigenbaum Universality in String Theory
Creators: name: Kogan, Ian I.
name: Polyakov, Dimitri
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Brane-like vertex operators, defining backgrounds with the ghost-matter mixing in NSR superstring theory, play an important role in a world-sheet formulation of D-branes and M theory, being creation operators for extended objects in the second quantized formalism. In this paper we show that dilaton's beta function in ghost-matter mixing backgrounds becomes stochastic. The renormalization group (RG) equations in ghost-matter mixing backgrounds lead to non-Markovian Fokker-Planck equations which solutions describe superstrings in curved space-times with brane-like metrics.We show that Feigenbaum universality constant $δ=4,669...$ describing transitions from order to chaos in a huge variety of dynamical systems, appears analytically in these RG equations. We find that the appearance of this constant is related to the scaling of relative space-time curvatures at fixed points of the RG flow. In this picture the fixed points correspond to the period doubling of Feigenbaum iterational schemes.
description: 14 pages, typos corrected. Dedicated to the 80-th birthday of Karen Avetovich Ter-Martirosyan
STRATEGIC COST MANAGEMENT AS INSTRUMENT FOR IMPROVING COMPETITIVENESS OF AGRIBUSINESS COMPLEX
Creators: name: Savić, Bojan
name: Vasiljević, Zorica
name: Đorđević, Dragan
name: Savić, Bojan
name: Vasiljević, Zorica
name: Đorđević, Dragan
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Marketing
subject: FOS: Economics and business
subject: cost accounting
subject: cost management
subject: ecological costs
subject: agribusiness complex
subject: competitiveness

description: Cost accounting as a segment of an integrated accounting information system by generation of the relevant information provides significant support for both financial and managerial accounting. The above information represents the information base for decision making of internal and external users (management, investors, creditors and other stakeholders). In this paper a special attention is paid to contemporary systems of cost accounting, the application of which can be seen as an integral part of the effort undertaken in order to measure and control costs, since cost management is one of the indispensable elements to achieve, maintain and improve the competitiveness of enterprises. Having in mind the significant potential the Republic of Serbia has in the field of agricultural production, the aim of this paper is to highlight the challenges and specifics of cost management in the agribusiness complex enterprises. Hence, this paper discusses the modern systems of cost accounting as well as the cost management methods suited to the specific agricultural management activities, which could help to the local companies in efforts for share in the global agri-food products’ market.
description: Review Article
Phase diagram of the three-dimensional NJL model
Creators: name: Strouthos, Costas G.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: With the exception of confinement the three-dimensional Nambu-Jona-Lasinio (NJL_3) model incorporates many of the essential properties of QCD. We discuss the critical properties of the model at nonzero temperature T and/or nonzero chemical potential $μ$. We show that the universality class of the thermal transition is that of the d=2 classical spin model with the same symmetry. We provide evidence for the existence of a tricritical point in the ($μ$,temperature) plane. We also discuss numerical results by Hands et al. which showed that the system is critical for $μ>μ_c$ and the diquark condensate is zero.
description: 3 pages, To appear in the proceedings of Conference on Quarks and Nuclear Physics (QNP 2002), Julich, Germany, 9-14 Jun 2002
AGRICULTURAL FRANCHISING AND CONTRIBUTION TO ACHIEVING OBJECTIVES OF THE EU COMMON AGRICULTURAL POLICY
Creators: name: Stanković, Milica
name: Stanković, Milica
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Marketing
subject: FOS: Economics and business
subject: Common Agricultural Policy
subject: EU
subject: agricultural franchising
subject: disinvestment
subject: CAP objectives

description: The Common Agricultural Policy is the oldest, the most complex, the most expensive EU policy and it represents one of the most important drivers of European integration. Agrarian franchising is one of the innovations in the field of franchising, which implementation is still in its infancy and it is necessary to strive for the popularization of this business model. The aim of the paper is to emphasize the importance of agricultural franchising concept development and contribution of implementation of this concept to the achievement of the Common Agricultural Policy objectives and improvement of the agrarian sector as a whole. Special attention is paid on agricultural franchising as a hybrid form of disinvestment in conditions of economic crisis. Based on analysis of advantages and disadvantages of agricultural franchising, we conclude that it has the potential for solving a large number of problems that occur in the agrarian sector, with a particular focus on the importance of agricultural franchising to the achievement of the CAP objectives.
description: Review Article