cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High temperature superconductivity in the two-dimensional $t$-$J$ model: Gutzwiller wave function solution
Creators: name: Kaczmarczyk, J.
name: Bünemann, J.
name: Spałek, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A systematic diagrammatic expansion for Gutzwiller-wave functions (DE-GWF) proposed very recently is used for the description of superconducting (SC) ground state in the two-dimensional square-lattice $t$-$J$ model with the hopping electron amplitudes $t$ (and $t'$) between nearest (and next-nearest) neighbors. On the example of the SC state analysis we provide a detailed comparison of the method results with other approaches. Namely: (i) the truncated DE-GWF method reproduces the variational Monte Carlo (VMC) results; (ii) in the lowest (zeroth) order of the expansion the method can reproduce the analytical results of the standard Gutzwiller approximation (GA), as well as of the recently proposed "grand-canonical Gutzwiller approximation" (GCGA). We obtain important features of the SC state. First, the SC gap at the Fermi surface resembles a $d_{x^2-y^2}$-wave only for optimally- and overdoped system, being diminished in the antinodal regions for the underdoped case in a qualitative agreement with experiment. Corrections to the gap structure are shown to arise from the longer range of the real-space pairing. Second, the nodal Fermi velocity is almost constant as a function of doping and agrees semi-quantitatively with experimental results. Third, we compare the doping dependence of the gap magnitude with experimental data. Fourth, we analyze the $\mathbf{k}$-space properties of the model: Fermi surface topology and effective dispersion. The DE-GWF method opens up new perspectives for studying strongly-correlated systems, as: (i) it works in the thermodynamic limit, (ii) is comparable in accuracy to VMC, and (iii) has numerical complexity comparable to GA (i.e., it provides the results much faster than the VMC approach).
description: 33 pages, 12 figures
THE USE OF MOBILE EYE TRACKING TO ASSESS COGNITIVE LOAD IN LOWER LIMB AMPUTEES: A PILOT STUDY
Creators: name: Manz, Sabina
name: Dosen, Strahinja
name: Gonzalez-Vargas, Jose
Publisher: name: Zenodo
Year: 2022

description: Abstract for the Congress of the European Society of Biomechanics 2022.
title: Capacités transversales en EPS au secondaire 2 : Étude de cas d'un gymnase vaudois
title: Capacités transversales en EPS au secondaire 2 : Étude de cas d'un gymnase vaudois
titleType: AlternativeTitle
Creators: name: Pellet, Robin
name: Brüschweiler, Joël
Publisher: name: Unknown
Year: 0
Subjects: subject: compétences transversales
subject: EPS
subject: perceptions
subject: plans d’études
subject: enseignement

description: L’enseignement de l’éducation physique est soumis à plusieurs plans d’études selon le niveau scolaire. Ce travail s’intéresse à l’enseignement de l’EPS au secondaire 2 dans un gymnase vaudois, et plus particulièrement aux compétences transversales. Citées et présentées de manière différente entre les plans d’études, les compétences transversales suscitent des interrogations. Selon les auteurs, le plan d’études vaudois (PEV) pour les gymnases vaudois manque de clarté, d’explications et d’exemples concernant les compétences transversales. Le plan d’études cadre (PEC) pour les écoles professionnelles, plus récent, leur semble plus favorable à une bonne compréhension et une meilleure appropriation de la part des enseignants des concepts pédagogiques en matière de compétences transversales. Après avoir posé le cadre théorique de ce travail, les auteurs ont mené une recherche sur la perception actuelle des élèves d’un gymnase vaudois. En interrogeant par questionnaires 181 gymnasiens de 15 à 21 ans, les auteurs ont récolté des données sous la forme de scores et de mots-clés. Ces données leur ont permis d’évaluer la perception des compétences transversales chez les élèves de ce gymnase vaudois, de la comparer entre les années et d’analyser certains détails. Il en ressort qu’aucune évolution significative n’est observée entre les années ou les âges mais que les compétences transversales ne sont pas toutes perçues de la même manière. Les compétences transversales, de communication et de collaboration sont largement perçues chez les gymnasiens alors que les compétences de démarche réflexive, de stratégies d’apprentissage et de pensée créatrice sont peu perçues. Ces résultats sont autant observés dans le traitement des données sous forme de scores que sous forme de mots-clés. Les auteurs posent l’hypothèse que les enseignants se reposent sur les disciplines comme autoporteuses de l’ensemble des compétences transversales, cela amenant à une disproportionnalité dans les perceptions. Les auteurs proposent que cette étude s’étende à l’ensemble des gymnases vaudois afin d’aboutir à une transformation du plan d’études vaudois pour le gymnase, tout en s’uniformisant avec les autres plans d’études du canton.
Global Collaboration and the Future of the OCLC Cooperative
Creators: name: Jordan, Jay
name: Neal, James G.
name: Wilson, Lizabeth
Publisher: name: Columbia University
Year: 2006
Subjects: Library science
Information science

description: "On July 1, 2006, RLG and OCLC combined their organizations and resources. RLG's products and services are being integrated with OCLC's, and RLG's program initiatives are going forward in a new division of OCLC Programs and Research. In this article, the authors offer their views on the coming together of the two organizations and the prospects for the future." -- page 395
Exclusive $ρ$ and $J/Ψ$ photoproduction in ultraperipheral $pO$ and $OO$ collisions at energies available at the CERN Large Hadron Collider
Creators: name: Goncalves, Victor P.
name: Moreira, Bruno D.
name: Santana, Luana
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Collisions with Oxygen ions at the LHC opens the possibility of investigating the description of the QCD dynamics in an unexplored regime, complementary to those performed in $pp$, $pPb$ and $PbPb$ collisions. In this paper we estimate the exclusive $ρ$ and $J/Ψ$ photoproduction in ultraperipheral $pO$ and $OO$ collisions at the Large Hadron Collider using the color dipole formalism and considering distinct models for the dipole - target scattering amplitude and different approaches for the modelling of the vector meson wave function. We present our predictions for the rapidity and transverse momentum distributions, as well as for the total cross sections considering the rapidity ranges covered by the ALICE and LHCb detectors. Such results indicate that a future experimental analysis of these final states is feasible and that its study can be useful to improve our understanding of the QCD dynamics at high energies.
description: 11 pages, 7 figures, 2 tables. Improved and enlarged version to be published in Physical Review C
DAMS, DISPLACEMENT AND REHABILITATION
Creators: name: Bhagath Chandra, N.
Publisher: name: figshare
Year: 2022
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 160804 Rural Sociology
subject: 160802 Environmental Sociology

description: Abstract Development-Induced-Displacement has become one of the leading problems of theworld as an overwhelming number of people are being affected by construction of bigdams, larger industrial companies and other developmental projects, which forciblyevacuate the people who stay in a particular place (CSE-1985). The current study has been conducted at Mid-Maneru Dam, situated in erstwhile Karimnagar district and currently located in Rajanna-Sircilla district of Telangana State, launched in 2006 and it was displaced 20,000 people reside in 13villages come under water. This study has adopted descriptive research design. Computerized simple random technique was adopted for the selection of the sample respondents for this study. The sample size is 565, which constitutes to 5percentage of the universe. The interview schedule has covered the process of displacement and problems and prospects of rehabilitation in order to understand the overall impact and implications of dam’s construction on the stakeholders, community and by large on the society. The results from the current study are The process of displacement deprives its oustees and stakeholders in a variety of ways, and those that are absolutely necessary for their live, such as homes, lands, productive assets, common properties, livelihoods, attachments, sentiments, identities, and so on, are being destroyed as a result of involuntary evocation. All of this leads to psychosocial trauma, and as a result, they gradually lose their livelihoods, causing economic insecurity, occupational change, and pushing them into a state of enigma and marginalization
Triangular Kondo lattice in $\mathrm{YbV_6Sn_6}$ and its quantum critical behaviors in magnetic field
Creators: name: Guo, Kaizhen
name: Ye, Junyao
name: Guan, Shuyue
name: Jia, Shuang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report magnetization, heat capacity and electrical resistivity for a newly discovered heavy fermion (HF) compound $\mathrm{YbV_6Sn_6}$ which is crystallized in a hexagonal $\mathrm{HfFe_6Ge_6}$-type structure, highlighted by the stacking of triangular ytterbium sublattice and kagome vanadium sublattice. Above 2 K, $\mathrm{YbV_6Sn_6}$ shows typical HF properties due to the Kondo effect on the Kramers doublet of $\mathrm{Yb^{3+}}$ ions in crystal electric field. A remarkable magnetic ordering occurs at $T_{\mathrm{N}}$ = 0.40 K in zero field while a weak external field suppresses the ordering and induces non-Fermi liquid (NFL) behavior. In strong magnetic field the compound shows a heavy Fermi liquid state. $\mathrm{YbV_6Sn_6}$ presents as one of the few examples of Yb-based HF compounds hosting triangular Kondo lattice on which a magnetic field induces quantum criticality near zero temperature.
description: 10 pages, 8 figures
title: L'usage des Degrés de certitude (DC) améliore-t-il le réalisme des étudiants ?
title: Analyse de l'évolution du réalisme dans deux classes du secondaire post-obligatoire soumises à des évaluations ayant recours à la technique des DC
titleType: Subtitle
title: L'usage des Degrés de certitude (DC) améliore-t-il le réalisme des étudiants ?
titleType: AlternativeTitle
Creators: name: D'Anto, Kelly
name: Rosset, Daphné
Publisher: name: Unknown
Year: 0
Subjects: subject: QCM
subject: degrés de certitude
subject: réalisme
subject: autoévaluation
subject: centration
subject: mathématiques

description: Dans ce mémoire nous souhaitons analyser le réalisme des élèves en ayant recours aux questionnaires à choix multiples (QCM) utilisant des degrés de certitude (DC), c'est-à-dire, des QCM pour lesquels les élèves doivent fournir leur degré de certitude quant à leur réponse donnée. Le degré de certitude doit suivre une échelle probabiliste et l’échelle des points varie en fonction d’une réponse correcte ou fausse et en fonction du degré de certitude choisi. Nous émettons deux hypothèses : le réalisme des élèves varie en fonction du genre et le réalisme s'améliore avec de l'entraînement. En effet, nous pensons que les filles ont tendance à se sous-estimer tandis que les garçons ont tendance à se surestimer. Nous émettons également l’hypothèse que le réalisme des élèves s’améliorerait au fur et à mesure qu’ils s’entrainent à ce type de QCM. Nos recherches ne nous ont pas permis de conclure qu’il y ait une différence d’autoévaluation entre les filles et les garçons. De plus, même si le réalisme des élèves a augmenté entre certains QCM pour chaque classe, nos résultats ne nous permettent pas d’affirmer que le réalisme des élèves s’améliore au fur et à mesure du temps avec de l’entrainement. Afin d’obtenir des résultats plus significatifs et avoir une valeur scientifique, cette recherche devrait être effectuée sur un nombre plus important d’étudiants avec des QCM comprenant un plus grand nombre de questions.
Statistical Mechanics of Multi-Edge Networks
Creators: name: Sagarra, Oleguer
name: Pérez-Vicente, Conrad J.
name: Dïaz-Guilera, Albert
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Statistical properties of binary complex networks are well understood and recently many attempts have been made to extend this knowledge to weighted ones. There is, however, a subtle difference between networks where weights are continuos variables and those where they account for discrete, distinguishable events, which we call multi-edge networks. In this work we face this problem introducing multi-edge networks as graphs where multiple (distinguishable) connections between nodes are considered. We develop a statistical mechanics framework where it is possible to get information about the most relevant observables given a large spectrum of linear and nonlinear constraints including those depending both on the number of multi-edges per link and their binary projection. The latter case is particularly interesting as we show that binary projections can be understood from multi-edge processes. The implications of these results are important as many real agent based problems mapped onto graphs require of this treatment for a proper characterization of its collective behavior.
description: 17 pages (13 + Appendix), 3 figures, Submitted to PRX
Can violations of Bell's inequalities be considere as the final proof of quantum physics ?
Creators: name: Henault, Francois
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nowadays, it is commonly admitted that the experimental violation of Bell's inequalities that was successfully demonstrated in the last decades by many experimenters, are indeed the ultimate proof of quantum physics and of its ability to describe the whole microscopic world and beyond. But the historical and scientific story may not be envisioned so clearly: it starts with the original paper of Einstein, Podolsky and Rosen (EPR) aiming at demonstrating that the formalism of quantum theory is incomplete. It then goes through the works of D. Bohm, to finally proceed to the famous John Bell's relationships providing an experimental setup to solve the EPR paradox. In this communication is proposed an alternative reading of this history, showing that modern experiments based on correlations between light polarizations significantly deviate from the original spirit of the EPR paper. It is concluded that current experimental violations of Bell's inequalities cannot be considered as an ultimate proof of the completeness of quantum physics models.
description: 9 pages, 4 figures Proceedings of the SPIE 2013, vol. 8832
Merodon mucronatus Rondani 1857
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Merodon
Merodon mucronatus

description: Merodon mucronatus Rondani, 1857
ORIGINAL DESCRIPTION: 1857: 53 (key), 60 (description).
TYPE LOCALITY: “ in Pedemontio vel in Liguria [Piedmont as well as Liguria (Italy)]”.
TYPE MATERIAL: 1 ♂, holotype (missing head, terminalia in a microvial pinned below specimen) (MZUF: Box 2): Merodon Fb. Latr. / mucronatus Rndn. / 55 / La Specola Firenze 55 / armipes det. Hurkmans, 1987 / Merodon ruficornis Meigen 1822, det. Vujić, 2006 / Merodon mucronatus.
CURRENT STATUS: junior synonym of Merodon ruficornis Meigen, 1822 (Peck 1988: 173, Belcari et al. 1995a: 16, Radenković et al. 2002: 52).
REMARKS: Rondani (1857: 60) described Merodon mucronatus from a single specimen: “ Exemplar unicum masculum in collection D. Mussino inveni [I found a single male specimen in Mr. Mussino’s collection]”. Giuseppe Mussino collected both in Piedmont and in Liguria.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 256, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
Is gravitational mass of a quantum body equivalent to its energy?
Creators: name: Lebed, Andrei G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We define passive gravitational mass operator of a hydrogen atom in the post-Newtonian approximation of general relativity and show that it does not commute with energy operator, taken in the absence of gravitational field. Nevertheless, the equivalence between the expectation values of passive gravitational mass and energy is shown to survive for stationary quantum states. Inequivalence between passive gravitational mass and energy at a macroscopic level results in time dependent oscillations of the expectation values of passive gravitational mass for superpositions of stationary quantum states, where the equivalence restores after averaging over time. Inequivalence between gravitational mass and energy at a microscopic level reveals itself as unusual electromagnetic radiation, emitted by the atoms, supported and moved in the Earth gravitational field with constant velocity using spacecraft or satellite, which can be experimentally measured.
description: 8 pages in published variant. arXiv admin note: substantial text overlap with arXiv:1111.5365
Analytic continuation of harmonic sums with purely imaginary indices near the integer values
Creators: name: Velizhanin, V. N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a simple algebraic method for the analytic continuation of harmonic sums with integer real or purely imaginary indices near negative and positive integers. We provide a MATHEMATICA code for exact expansion of harmonic sums in a small parameter near these integers. As an application, we consider the analytic continuation of the anomalous dimension of twist-1 operators in ABJM model, which contains the nested harmonic sums with purely imaginary indices. We found that in the BFKL-like limit the result has the same single-logarithmic behavior as in N=4 SYM and QCD, however, we did not find a general expression for the ``BFKL Pomeron'' eigenvalue in this model. For the slope function, we found full agreement with the expansion of the known general result and give predictions for the first three perturbative terms in the expansion of the next-to-slope function. The proposed method of analytic continuation can also be used for other generalization of the nested harmonic sums.
description: 17 pages, title corrected
Inductively guided circuits for ultracold dressed atoms
Creators: name: Sinuco-Leon, German
name: Burrows, Kathryn
name: Arnold, Aidan S.
name: Garraway, Barry M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We propose a flexible and robust scheme to create closed quasi-one dimensional guides for ultra-cold atoms through the dressing of hyperfine sub-levels of the atomic ground state. The dressing field is spatially modulated by inductive effects over a micro-engineered conducting loop, freeing the trapping region from leading wires in its proximity. We show that arrays of connected ring traps can also be created by carefully designing the shape of the conducting loop. We report on characteristics of the trap and mechanisms that limit the range of parameters available for experimental implementation, including non-adiabatic losses and heat dissipation by induced currents. We outline conditions to select appropriate parameters for operation of the trap with atom-chip technology.
description: 7 pages, 7 pdf figures
ELVES III: Environmental Quenching by Milky Way-Mass Hosts
Creators: name: Greene, Jenny E.
name: Danieli, Shany
name: Carlsten, Scott
name: Beaton, Rachael
name: Jiang, Fangzhou
name: Li, Jiaxuan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Isolated dwarf galaxies usually exhibit robust star formation but satellite dwarf galaxies are often devoid of young stars, even in Milky Way-mass groups. Dwarf galaxies thus offer an important laboratory of the environmental processes that cease star formation. We explore the balance of quiescent and star-forming galaxies (quenched fractions) for a sample of ~400 satellite galaxies around 30 Local Volume hosts from the Exploration of Local VolumE Satellites (ELVES) Survey. We present quenched fractions as a function of satellite stellar mass, projected radius, and host halo mass, to conclude that overall, the quenched fractions are similar to the Milky Way, dropping below 50% at satellite M* ~ 10^8 M_sun. We may see hints that quenching is less efficient at larger radius. Through comparison with the semi-analytic modeling code satgen, we are also able to infer average quenching times as a function of satellite mass in host halo-mass bins. There is a gradual increase in quenching time with satellite stellar mass rather than the abrupt change from rapid to slow quenching that has been inferred for the Milky Way. We also generally infer longer average quenching times than recent hydrodynamical simulations. Our results are consistent with models that suggest a wide range of quenching times are possible via ram-pressure stripping, depending on the clumpiness of the circumgalactic medium, the orbits of the satellites, and the degree of earlier preprocessing.
description: 18 pages, 12 figures, replaced post-refereeing, no major changes
Merodon nigritarsis Rondani 1845
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Merodon
Merodon nigritarsis

description: Merodon nigritarsis Rondani, 1845
ORIGINAL DESCRIPTION: 1845f: 258 (key), 264 (description).
TYPE LOCALITY: “ nelle colline del parmigiano [Parmese hills (Italy)]”.
TYPE MATERIAL: 4 ♂♂, 3 ♀♀ (only two of them are syntypes but they are not labeled as such) with the following labels: 1 ♂ (dirty, missing left mid-leg, terminalia in a microvial pinned below specimen) (MZUF: Box 2), Merodon Fb. Latr. / nigritarsis Rnd., ♂ / 68 / ♂ / Merodon nigritarsis Rond., det. Hurkmans, 1987; 1 ♂ (MZUF: Box 2), Merodon Fb. Latr. / nigritarsis Rnd. / 68 / ♂ / Merodon nigritarsis Rnd., det. Hurkmans, 1987; 1 ♂ (missing left mid-leg) (MZUF: Box 2), Merodon Fb. Latr. / nigritarsis Rnd. / 68 / Giug. [June] / ♂ / Merodon nigritarsis Rnd., det. Hurkmans, 1987; 2 ♀♀ (one covered with mold, abdomen partially eaten by dermestids) (MZUF: Box 2), Merodon Fb. Latr. / nigritarsis Rnd. / 68 / Merodon nigritarsis Rnd., det. Hurkmans, 1987; 1 ♀ (MZUF: Box A), Merodon nigritarsis R., 29, ♀, Parma / 393 29; 1 ♂ (MSNC: Box DIPTERA Ex collezione Rondani - I), Merodon nigritarsis Rndn. ♂ Parma / Coll. Rondani, scatola n° 3, posiz. D-6 / Museo di Storia Naturale Università di Pisa, Calci (PI) ex collezione Rondani.
CURRENT STATUS: subspecies of Merodon spinipes (Fabricius, 1794) (Peck 1988: 174); valid species (Hurkmans 1991: 190, Belcari et al. 1995a: 16).
REMARKS: Rondani (1845f: 264) described Merodon nigritarsis from two specimens without specifying their sex: “ ho trovati due soli individui [I found only two specimens]”. Hurkmans (1993: 190) incorrectly designated a specimen from “ Torino [Turin]” as the lectotype (♂) and a female from “ Susa ” [= Susa Valley (Piedmont)] as one of the seven paralectotypes (3 ♂♂, 4 ♀♀) because these are not type localities. There are three males and three females in the MZUF and one male in the MSNC: these specimens did not have any label indicating their type status. We are unable to single out the two specimens upon which Rondani based his description. We leave the recognition of the two syntypes to a future specialist.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on pages 256-257, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
Avant-propos
Creators: name: Camerini, Laurent
Publisher: name: Classiques Garnier
Year: 2022
Subjects: subject: USA
subject: Canada
subject: Nouveauté
subject: Découverte
subject: Périple

description: Cette introduction met en avant les enjeux d’une réflexion autour des relations possibles entre Marguerite Duras et les Amériques (influences sur l’imaginaire de l’auteur tant au niveau poétique qu’éthique voire politique, intertextualités, dialogues sur le plan cinématographique ou théâtral). Sont également présentées l’ensemble des contributions contenues dans le recueil.
Using Natural History Collection Data in Your CURE: BLUE BIOME 2020
Creators: name: Monfils, Anna
name: Linton, Debra
name: Snodgrass, Rachael
name: Pearson, Katie
name: Yost, Jenn
name: Jantzen, Johanna
name: Soltis, Douglas
name: Soltis, Pamela
name: Gaynor, Shelly
Publisher: name: QUBES Educational Resources
Year: 2020

description: This is the report for the BLUE working group from the Biome Institute 2020. It reflects our group's efforts and products related to CUREs and Natural History Collection Digital Data.
Tree-level Correlators of scalar and vector fields in AdS/CFT
Creators: name: Kharel, Savan
name: Siopsis, George
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Extending earlier results by Paulos, we discuss further the use of the embedding formalism and Mellin transform in the calculation of tree-level correlators of scalar and vector fields in AdS/CFT. We present an iterative procedure that builds amplitudes by sewing together lower-point off-shell diagrams. Both scalar and vector correlators are shown to be given in terms of Mellin amplitudes. We apply the procedure to the explicit calculation of three-, four- and five-point correlators.
description: 21 pages
The Research and Development Imperative in the Academic Library: Path to the Future
Creators: name: Neal, James G.
Publisher: name: Columbia University
Year: 2006
Subjects: Library science
Education, Higher--Administration

description: "Librarianship is an 'information poor' information profession. Decisions are routinely not supported by the evidence of well-designed investigations. Research in the field is poorly communicated, understood, and applied. It is imperative that academic librarians and higher education libraries develop and carry out systematic research and development programs. What is research and development (R and D)? Research is thorough investigation, experimentation focused on the discovery and interpretation of new facts, and the practical application of new or revised theories or laws. Development is making research results visible, available, and useful. R and D is thus solving real problems in real situations. R and D has its roots in the late nineteenth century corporation when new products and processes became essential to market share and profit. The needs of national defense and global economics pushed the U.S. government into a major R and D role through two world wars. American universities have developed over the last 50 years as major centers of R and D activity and technology transfer, particularly as a result of expanding federal investment through grants. Other organizations in the not-for-profit sector, including libraries, have not advanced an R and D capacity or commitment. This needs to change." -- page 1
Linearized multipole solutions and their representation
Creators: name: Hernandez-Pastora, J. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The monopole solution of the Einstein vacuum field equations (Schwarzschild`s solution) in Weyl coordinates involves a metric function that can be interpreted as the gravitational potential of a bar of length $2m$ with constant linear density. The question addressed in this work is whether similar representations can be constructed for Weyl solutions other than the spherically symmetric one. A new family of static solutions of the axisymmetric vacuum field equations generalizing the M-Q$^{(1)}$ solution is developed. These represent slight deviations from spherical symmetry in terms of the relativistic multipole moments (RMM) we wish the solution to contain. A Newtonian object referred to as a dumbbell can be used to describe these solutions in a simple form by means of the density of this object, since the physical properties of the relativistic solution are characterized by its behaviour. The density profile of the dumbbell, which is given in terms of the RMM of the solution, allows us to distinguish general multipole Weyl solutions from the constant-density Schwarzschild solution. The range of values of the multipole moments that generate positive-definite density profiles are also calculated. The bounds on the multipole moments that arise from this density condition are identical to those required for a well-behaved infinite-redshift surface $g_{00}=0$.
description: 32 pages, 2 figures
Anisotropic optics and gravitational lensing of tilted Weyl fermions
Creators: name: Könye, Viktor
name: Mertens, Lotte
name: Morice, Corentin
name: Chernyavsky, Dmitry
name: Moghaddam, Ali G.
name: van Wezel, Jasper
name: Brink, Jeroen van den
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that tilted Weyl semimetals with a spatially varying tilt of the Weyl cones provide a platform for studying analogues to problems in anisotropic optics as well as curved spacetime. Considering particular tilting profiles, we numerically evaluate the time evolution of electronic wave packets and their current densities. We demonstrate that electron trajectories in such systems can be obtained from Fermat's principle in the presence of an inhomogeneous, anisotropic effective refractive index. On the other hand, we show how the electrons dynamics reveal gravitational features and use them to simulate gravitational lensing around a synthetic black hole. These results bridge optical and gravitational analogies in Weyl semimetals, suggesting novel pathways for experimental solid-state electron optics.
Merodon rufitibius Rondani 1845
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Merodon
Merodon rufitibius

description: Merodon rufitibius Rondani, 1845
ORIGINAL DESCRIPTION: 1845f: 259 (key), 265 (description).
TYPE LOCALITY: Rossi (1790: 292) gave no type locality in the original description of Merodon avidus (Rossi, 1790), but presumably it is Tuscany (Italy) because the work deals with insects “ in provinciis Florentina et Pisana collegit [collected in provinces of Florence and Pisa]” (Rossi 1790: 292).
TYPE MATERIAL: see Remarks.
CURRENT STATUS: junior synonym of Merodon avidus (Rossi, 1790) (Peck 1988: 167, Hurkmans 1993: 191, Belcari et al. 1995a: 16).
REMARKS: Rondani (1845f: 265) considered Merodon avidus (Rossi, 1790) and Merodon pruni (Rossi, 1790) as the same species but, instead of applying the Principle of Priority, incorrectly proposed the substitute name Merodon rufitibius. Rondani (1857: 66) reaffirmed having proposed Merodon rufitibius to combine Merodon avidus and Merodon pruni. Schiner (1860: 345; 1864: 108), Bezzi (1900a: 91), Villeneuve (1903: 115), Bezzi & Stein (1907: 120), Kertész (1910: 279) and Sack (1931: 327) placed it in synonymy with Merodon avidus while Loew (1862a: 165), Bezzi (1892: 85, 1894: 284) and Becker (1907: 253) considered it as a valid species. The type material for Merodon rufitibius will be the same as for the name it was proposed to replace, i.e., Merodon avidus. The type material of this latter species has been presumably lost (Hurkmans, 1993: 193); Popović et al. (2015: 795) designated a neotype in the FSUNS. Under the name Merodon rufitibius there are two males and seven females in the MZUF, one male and one female in the MSNC and one male and one female (non-types) in the MZUB. Hurkmans (1993: 192) incorrectly considered the MZUF specimens as the types.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 257, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
Correlators of arbitrary untwisted operators and excited twist operators for N branes at angles
Creators: name: Pesando, Igor
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the generic correlator with L untwisted operators and N (excited) twist fields for branes at angles on T^2 and show that it is given by a generalization of the Wick theorem. We give also the recipe to compute efficiently the generic OPE between an untwisted operator and an excited twisted state.
description: 49 pages, 6 figures
Fluctuation in e-mail sizes weakens power-law correlations in e-mail flow
Creators: name: Matsubara, Yoshitsugu
name: Hieida, Yasuhiro
name: Tadaki, Shin-ichi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Power-law correlations have been observed in packet flow over the Internet. The possible origin of these correlations includes demand for Internet services. We observe the demand for e-mail services in an organization, and analyze correlations in the flow and the sequence of send requests using a Detrended Fluctuation Analysis (DFA). The correlation in the flow is found to be weaker than that in the send requests. Four types of artificial flow are constructed to investigate the effects of fluctuations in e-mail sizes. As a result, we find that the correlation in the flow originates from that in the sequence of send requests. The strength of the power-law correlation decreases as a function of the ratio of the standard deviation of e-mail sizes to their average.
description: 8 pages, 6 figures, EPJB accepted
Cosmological evolution of the cosmological plasma with interpartial scalar interaction. III. Model with the attraction of the like scalar charged particles
Creators: name: Ignat'ev, Yu. G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: On the basis of the relativistic kinetic theory the mathematical model of cosmological plasmas with an attraction of the like charged scalar particles is formulated. It is shown, that cosmological the model, based on a classical scalar field with an attraction, is unsatisfactory, that leads to necessity of attraction of phantom models of a scalar field for systems with an attraction.
description: 6 pages, 3 references
Merodon sicanus Rondani 1845
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Merodon
Merodon sicanus

description: Merodon sicanus Rondani, 1845
ORIGINAL DESCRIPTION: 1845f: 258 (key), 264 (description).
TYPE LOCALITY: “ Sicilia [Sicily (Italy)]”.
TYPE MATERIAL: not found in this study. See Remarks.
CURRENT STATUS: junior synonym of Merodon pruni (Rossi, 1790) (Peck 1988: 172, Hurkmans 1993: 185, Belcari et al. 1995a: 16).
REMARKS: Rondani (1845f: 264) described Merodon sicanus from just two female specimens: “ specie formata sopra due individui di sesso femminile [species described from two female specimens]” from material received from M. Spinola. We could not locate any type specimens during this study. Not included in the type series are four MZUF specimens: one MZUF male because of its sex, two MZUF females numbered “69” from “Parma” one MSNC female from “Apenn. [= Apennines]” because they are not the type locality. Hurkmans (1993: 185) incorrectly designated one of the two females in the MZUF as lectotype.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on pages 257-258, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
The $2T$-qutrit, a two-mode bosonic qutrit
Creators: name: Denys, Aurélie
name: Leverrier, Anthony
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computers often manipulate physical qubits encoded on two-level quantum systems. Bosonic qubit codes depart from this idea by encoding information in a well-chosen subspace of an infinite-dimensional Fock space. This larger physical space provides a natural protection against experimental imperfections and allows bosonic codes to circumvent no-go results that apply to states constrained by a 2-dimensional Hilbert space. A bosonic qubit is usually defined in a single bosonic mode but it makes sense to look for multimode versions that could exhibit better performance. In this work, building on the observation that the cat code lives in the span of coherent states indexed by a finite subgroup of the complex numbers, we consider a two-mode generalisation living in the span of 24 coherent states indexed by the binary tetrahedral group $2T$ of the quaternions. The resulting $2T$-qutrit naturally inherits the algebraic properties of the group $2T$ and appears to be quite robust in the low-loss regime. We initiate its study and identify stabilisers as well as some logical operators for this bosonic code.
description: 24 pages, python code available at https://gitlab.inria.fr/adenys/the-2t-qutrit, v3 published version
Isotropic Band Gaps and Freeform Waveguides Observed in Hyperuniform Disordered Photonic Solids
Creators: name: Man, Weining
name: Florescu, Marian
name: Williamson, Eric Paul
name: He, Yingquan
name: Hashemizad, Seyed Reza
name: Leung, Brian Y. C.
name: Liner, Devin Robert
name: Torquato, Salvatore
name: Chaikin, Paul M.
name: Steinhardt, Paul J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Recently, disordered photonic media and random textured surfaces have attracted increasing attention as strong light diffusers with broadband and wide-angle properties. We report the first experimental realization of an isotropic complete photonic band gap (PBG) in a two-dimensional (2D) disordered dielectric structure. This structure is designed by a constrained-optimization method, which combines advantages of both isotropy due to disorder and controlled scattering properties due to low density fluctuations (hyperuniformity) and uniform local topology. Our experiments use a modular design composed of Al2O3 walls and cylinders arranged in a hyperuniform disordered network. We observe a complete PBG in the microwave region, in good agreement with theoretical simulations, and show that the intrinsic isotropy of this novel class of PBG materials enables remarkable design freedom, including the realization of waveguides with arbitrary bending angles impossible in photonic crystals. This first experimental verification of a complete PBG and realization of functional defects in this new class of materials demonstrates their potential as building blocks for precise manipulation of photons in planar optical micro-circuits and has implications for disordered acoustic and electronic bandgap materials.
title: Promenades littéraires : de l'utilité de sortir de la classe pour mieux aborder une oeuvre au secondaire II
title: Promenades littéraires : de l'utilité de sortir de la classe pour mieux aborder une oeuvre au secondaire II
titleType: AlternativeTitle
Creators: name: Herzog, Amandine
name: Fabello, Amandine
Publisher: name: Unknown
Year: 0
Subjects: subject: Littérature
subject: Secondaire II
subject: Lecture
subject: Balade littéraire
subject: Plaisir
subject: Mémorisation
subject: Compréhension
subject: Motivation
subject: Créativité
subject: Sujet lecteur

description: Entre réel et fiction, cheminons ensemble… Ce travail part d’une réflexion sur le statut quelque peu figé de l’apprentissage de la littérature au secondaire II. En effet, Philippe Meirieu (entre autres) l’a constaté depuis quelques années déjà : l’ennui ne fait pas que survoler les classes ; il habite aussi nombre d’étudiants. Le cadre institutionnel, avec ses contraintes et ses obligations, accompagné d’un enseignement de la littérature encore souvent protocolaire, contribuent à la perte de sens des textes étudiés en classe. En conséquence, pourquoi ne pas penser le voyage comme support à l’apprentissage ? Nous partons de l’idée qu’une « balade littéraire » pourrait constituer un remède contre la lassitude et le manque de stimulation parfois ressentis par les élèves. Dans ce but, nous sommes sorties de la classe afin d’observer l’impact de cette activité sur différentes compétences des élèves – la création, la mémorisation, la compréhension –, mais aussi tout simplement sur leur motivation, leur plaisir à rencontrer un texte, et à l’éprouver autrement. Le parcours que vous vous apprêtez à entreprendre se déroulera en plusieurs étapes : la première vous permettra de vous parer de certains outils théoriques qui faciliteront la balade. Dès la deuxième étape, vous entrerez de plain-pied dans l’exercice : vous suivrez les traces des deux dispositifs originaux créés à différents moment de nos séquences d’enseignement. Prenez à gauche pour suivre une « balade initiatique », qui prétend faire entrer les élèves dans la découverte d’un corpus thématique. Par la lecture dans des lieux qui font échos aux extraits choisis par un processus d’analogie, compréhension et motivation devraient être favorisées. Prenez à droite et vous foulerez le sol de la « promenade conclusive », qui invite les élèves à sortir de la classe pour s’immerger dans l’univers de l’auteur étudié. En capturant un fragment du réel grâce au procédé photographique et, ainsi, une image qui rappelle l’univers fictionnel, les élèves devraient détenir motivation et créativité pour réaliser un texte témoignant de cette immersion. S’il vous reste un peu de souffle, vous pourrez encore faire un tour d’horizon des prolongements possibles – notamment par l’inclusion d’une application numérique ou de différents acteurs. Dans tous les cas, ces pratiques encouragent le ressenti des élèves (physique et émotionnel). Métamorphosés de la sorte en sujets lecteurs, ces derniers peuvent cueillir et accueillir le sens des textes, à la frontière du fictionnel et du réel.
Corpus Linguistics – Sign Language
Creators: name: Hanke, Thomas
Publisher: name: Universität Hamburg
Year: 2013

description: Sign language corpora are rather exotic within corpus linguistics as they deal with language data for languages having no written form and consequently no orthography. Much of the effort in current sign language corpus projects goes into segmentation and lemmatization as these need to be done manually while they are relatively straight- forward und in many cases automatic steps for other languages. The lack of large-scale lexical databases for sign languages implies that many decisions to be taken in these steps are preliminary and subject to later revision. Therefore, it is of utmost importance to always have access to the original data. We present our approach that takes these requirements into account and provides multiple views on the data in order to support data quality assurance even if independent double-transcription often is not an option due to the immense cost. To illustrate the approach, we present data from the map task as used in the Dicta-Sign project that collected data from four sign languages based on the same elicitation setting. This example also demonstrates where one can expect some parallels between sign and spoken language corpora.
Merodon subfasciatus Rondani 1845
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Merodon
Merodon subfasciatus

description: Merodon subfasciatus Rondani, 1845
ORIGINAL DESCRIPTION: 1845f: 257 (key), 261 (description).
TYPE LOCALITY: “ Sicilia [Sicily (Italy)]”.
TYPE MATERIAL: 1 ♂, holotype (missing head and right fore-leg, thorax partially eaten by dermestids, terminalia in a microvial pinned below specimen) (MZUF: Box 2): Merodon Fb. Latr. / subfasciatus Rnd., ♂, Sicil. / 59 / Merodon cinereus Fabr., det. Hurkmans, 1987.
CURRENT STATUS: junior synonym of Merodon cinereus (Fabricius, 1794) (Peck 1988: 168, Belcari et al. 1995a: 16).
REMARKS: Rondani (1845f: 261) described Merodon subfasciatus from a single male: “ è una specie che formo sopra un solo individuo … Questo esemplare è maschio [I described this species from a single specimen … This specimen is a male]”, received from M. Spinola. The MZUF contains an additional female numbered “59” received later from L. Bellardi (Rondani 1857: 58).
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 258, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
Damage accumulation in quasi-brittle fracture
Creators: name: Manzato, Claudio
name: Alava, Mikko J.
name: Zapperi, Stefano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The strength of quasi-brittle materials depends on the ensemble of defects inside the sample and on the way damage accumulates before failure. Using large scale numerical simulations of the random fuse model, we investigate the evolution of the microcrack distribution that is directly related to the strength distribution and its size effects. We show that the broadening of the distribution tail originates from the dominating microcracks in each sample and is related to a tendency of crack coalescence that increases with system size. We study how the observed behavior depends on the disorder present in the sample.
description: 5 pages, 7 figures