cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
First demonstration of multi-MeV proton acceleration from a cryogenic hydrogen ribbon target
Creators: name: Kraft, Stephan D.
name: Obst, Lieselotte
name: Metzkes-Ng, Josefine
name: Schlenvoigt, Hans-Peter
name: Zeil, Karl
name: Michaux, Sylvain
name: Chatain, Denis
name: Perin, Jean-Pal
name: Chen, Sophia N.
name: Fuchs, Julien
name: Gauthier, Maxence
name: Schramm, Thomas E. Cowan Ulrich
Publisher: name: arXiv
Year: 2019
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We show efficient laser driven proton acceleration up to 14MeV from a 50 $μ$m thick cryogenic hydrogen ribbon. Pulses of the short pulse laser ELFIE at LULI with a pulse length of $\approx$ 350 fs at an energy of 8 J per pulse are directed onto the target. The results are compared to proton spectra from metal and plastic foils with different thicknesses and show a similar good performance both in maximum energy as well as in proton number. Thus, this target type is a promising candidate for experiments with high repetition rate laser systems.
description: 9 pages
Distributed Optical Fiber Sensors for Strain and Deformation Monitoring of Pipelines and Penstocks
Creators: name: D. Inaudi
Publisher: name: Southeast Asian Geotechnical Society
Year: 2019
Subjects: Distributed Sensing
Optical Fiber Sensors
Pipeline monitoring
Penstock monitoring
Deformation monitoring

description: The Geotechnical Engineering Journal of the SEAGS & AGSSEA, 50, 2, pp 64-70
Quantum vacuum under mixed boundary conditions: the case for curved spacetime
Creators: name: Nazari, Borzoo
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Influence of gravity on the quantum vacuum of a massless minimally coupled scalar field under Robin boundary conditions on parallel plates is investigated. We introduce the detailed calculation of the volume energy for the case the gravitational background is weak in its most general form for a static spacetime. It founds that the quantum vacuum usually reacts to the gravitational field by decreasing the Casimir energy. In addition, we find sufficient conditions under which the Casimir force increases. Interestingly, the first order perturbation corrections, are present in the obtained formula for the volume energy. We show that for some specific choices of parameters, the energy is independent of Robin coefficients. Consistency with the literature is shown in some limiting cases and well-known examples are presented for both an increase or decrease in the volume energy.
A Methodology for Identification of Pipe Failure Hotspots
Creators: name: Ravin N Deo, Chunshun Zhang
Publisher: name: Southeast Asian Geotechnical Society
Year: 2019
Subjects: Pipe failure
Corrosion
Hotspots
Condition assessment
Geospatial platform

description: The Geotechnical Engineering Journal of the SEAGS & AGSSEA, 50, 2, pp 71-76
title: High Speed Visualization of Droplets Impacting with a Dry Surface at High Weber Numbers
Creators: name: Burzynski, David
name: Bansmer, Stephan
Publisher: name: Springer
Year: 2018
Subjects: subject: 621

description: The focus of this article is to describe the evolution of the spreading diameter
and secondary droplets generated by splashing. High-speed visualization was
used to study the time evolution of water droplets impacts with dry surfaces at Weber numbers between 3,500 and 10,000. Different prediction models of the maximal spreading diameter have been compared with each other and with the experimental data. A similarity between the spreading rates was observed in the last stage of the impact at highWeber numbers. The time evolution of the secondary droplets and the formation of the crown was observed and analyzed at the different Weber numbers.
Modelling Migration and Economic Agglomeration with Active Brownian Particles
Creators: name: Schweitzer, Frank
Publisher: name: arXiv
Year: 1999
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a stochastic dynamic model of migration and economic aggregation in a system of employed (immobile) and unemployed (mobile) agents which respond to local wage gradients. Dependent on the local economic situation, described by a production function which includes cooperative effects, employed agents can become unemployed and vice versa. The spatio-temporal distribution of employed and unemployed agents is investigated both analytically and by means of stochastic computer simulations. We find the establishment of distinct economic centers out of a random initial distribution. The evolution of these centers occurs in two different stages: (i) small economic centers are formed based on the positive feedback of mutual stimulation/cooperation among the agents, (ii) some of the small centers grow at the expense of others, which finally leads to the concentration of the labor force in different extended economic regions. This crossover to large-scale production is accompanied by an increase in the unemployment rate. We observe a stable coexistence between these regions, although they exist in an internal quasistationary non-equilibrium state and still follow a stochastic eigendynamics.
description: For related work see http://ais.gmd.de/~frank/
k-Nearest Neighbor Regression in the Estimation of TectonaGrandis Trunk Volume in the State of Pará, Brazil
Creators: name: Deivison V. Souza
name: Nievola, Júlio C.
name: Joielan X. Santos
name: Wojciechowski, Jaime
name: Gonçalves, Alexandre L.
name: Corte, Ana Paula D.
name: Sanquetta, Carlos R.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy

description: Models constructed from machine learning are a potential non-parametric alternative for the prediction of biometric variables in opposition to traditional regression modeling. The hypothesis of this study was that the non-parametric approach with the k-Nearest-Neighbor algorithm (k-NN) has the possibility of presenting better accuracy with lower demand for predictor variables in the estimates of T. grandis trunk volume than the traditional volumetric models applied in forest sciences. Ten volumetric models were adjusted. In the regression k-NN was defined as maximum of 25 (25-NN), but with learning only for the odd neighbors starting at 3-NN. The optimal k nearest neighbor for two variations of predictors was obtained through repeated cross-validations. Spurr (ln) and Schumacher-Hall were the most accurate linear models that meet the linear regression assumptions. The optimal k nearest neighbor for the algorithm was k = 5 for the two variations of predictors. The use of the k-NN estimator may be a more general approach to linear regression especially when the assumptions made about the errors are not satisfied. However, its use should be considered only when traditional linear regression models or other simpler methods do not show good results.
Chaînes énergétiques et modèles scientifiques scolaires de l’énergie. Analyse d’une séance de formation continue
Creators: name: TISON, ESTELLE
name: ROLLINDE, EMMANUEL
Publisher: name: Mediterranean Journal of Education
Year: 2023
Subjects: Energy, energy chain, in-training service, school science model

description: We analyzed an in-service training session on energy for secondary school teachers, in order to characterize the school science model of energy proposed to the teachers. This model is based in particular on energy transfers, conversion and storage, and is based on the representation of energy phenomena by energy chains that respond to a particular formalism. Conservation is mentioned, but is not at the heart of the model. Degradation, an essential property of energy in a societal context, is not part of this model.
description: Mediterranean Journal of Education, Vol. 3, N. 2 (2023) - Colloque SIEST Méditerranée 8, Tunisia
Magnetic Aharonov-Bohm effects and the quantum phase shift: A heuristic interpretation
Creators: name: Kasunic, Keith J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The shift in Aharanov-Bohm electron-interference fringe positions has been previously derived as resulting from phase differences induced by the magnetic vector potential, without being clear on the physical mechanism behind it. In this paper, we show that the de Broglie wavelength of the electron wavefunction is changed locally by its interaction with the vector potential. The vector potential thus acts as a quantum "phase plate", changing the phase difference between interfering electron wavefunctions in a non-dispersive, gauge-invariant manner.
ADYTrack: Development of a Railroad Trackbed Model and Parametric Study of Track Modulus
Creators: name: Asif Arshid, Ying Huang
Publisher: name: Southeast Asian Geotechnical Society
Year: 2019
Subjects: Railroad
Numerical Models
Finite Element Analysis
Subgrade Soil
Track Modulus

description: The Geotechnical Engineering Journal of the SEAGS & AGSSEA, 50, 2, pp 77-84
University supports for Open Access: a Canadian national study
Creators: name: Morrison, Heather
name: Greyson, Devon
Publisher: name: The University of British Columbia
Year: 2010

description: What are Canadian Universities doing to support their researchers who are required to make their research outputs openly accessible? This presentation is a story of a recent project investigating what University Libraries and Research Administration Offices in Canada are doing to support researchers in making their research OA. It includes a discussion of opportunities for libraries, universities, and OA research in the future. This session took place on October 20, 2009 in the Dodson Room of the Irving K. Barber Learning Centre at the University of British Columbia.
title: Neophyten in der urbanen Gehölzvegetation von Graz
Creators: name: Schrammel, Elisabeth
name: Drescher, Anton
name: Berg, Christian
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2019
Subjects: subject: 580

description: Die vorliegende Arbeit beschreibt die neophytenreiche Gehölzvegetation der Stadt Graz. Zu diesem Zweck wurden 129 pflanzensoziologische Aufnahmen von Gehölzbeständen erstellt, an deren Aufbau zumindest eine neophytische Holzart beteiligt ist. Die Daten wurden nach floristischen Ähnlichkeiten in fünf Vegetationseinheiten gegliedert: Mesophile Buchenwälder, Eichen-Hainbuchenwälder, Thermophile Buchenwälder, Monodominante Neophytengesellschaften und urbane Gebüsche. Es zeigte sich einerseits eine geographische Differenzierung innerhalb des Stadtgebietes und andererseits eine unterschiedlich starke Beeinflussung der Bestände durch Neophyten. Die Parameter, welche die floristische Zusammensetzung der neophytenreichen Gehölzvegetation bestimmen, sind neben dem starken anthropogenen Einfluss an den jeweiligen Standorten auch klimatische Faktoren. Dabei spielen die Lage der Stadt am südöstlichen Alpen-rand und die typischen Eigenschaften der Stadtflora eine bedeutende Rolle.
description: This paper investigates the neophytic woody vegetation in the city of Graz. For this purpose, such vegetation types were located and 129 phytosociological relevés were performed in the study area. The data were sorted by floristic similarity into five units: mesophilous beech forests, oak-hornbeam woodlands, thermophilous beech forests, monodominant neophytic community assembly and urban shrubs. The results show a geographical differentiation and a varying impact of neophytic plants on these vegetation types. Thereby the typical traits of the urban flora and the urban environment are playing a central role.
description: Erforschung und Erhaltung der Phytodiversität: Festschrift zum 70. Geburtstag für Prof. Dr. Dietmar Brandes, p. 323
Anisotropic strains and magnetoresistance of La_{0.7}Ca_{0.3}MnO_{3}
Creators: name: Koo, T. Y.
name: Park, S. H.
name: Lee, K. B.
name: Jeong, Y. H.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Thin films of perovskite manganite La_{0.7}Ca_{0.3}MnO_{3} were grown epitaxially on SrTiO_3(100), MgO(100) and LaAlO_3(100) substrates by the pulsed laser deposition method. Microscopic structures of these thin film samples as well as a bulk sample were fully determined by x-ray diffraction measurements. The unit cells of the three films have different shapes, i.e., contracted tetragonal, cubic, and elongated tetragonal for SrTiO_3, MgO, and LaAlO_3 cases, respectively, while the unit cell of the bulk is cubic. It is found that the samples with cubic unit cell show smaller peak magnetoresistance than the noncubic ones do. The present result demonstrates that the magnetoresistance of La_{0.7}Ca_{0.3}MnO_{3} can be controlled by lattice distortion via externally imposed strains.
description: Revtex, 10 pages, 2 figures
The Land Use in Rural New Zealand Model Version 1 (LURNZv1): Model Description
Creators: name: Hendy, Joanna
name: Kerr, Suzi
name: Baisden, Troy
name: Hendy, Joanna
name: Kerr, Suzi
name: Baisden, Troy
Publisher: name: Unknown
Year: 2007
Subjects: subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: Resource /Energy Economics and Policy
subject: simullation model
subject: land use
subject: dairy
subject: sheep
subject: beef
subject: forestry
subject: reverting indigenous forest

description: This paper documents the first version of the Land Use in Rural New Zealand Model (LURNZv1). It describes the overall modelling approach, the database underlying the model, and the construction of each module within the model. The model is econometrically estimated from national time series data and spatially extrapolated using economic and geophysical variables. It is primarily a simulation model but is also set up to produce predictions based on future price scenarios. The model output includes projections of four types of rural land use under different scenarios and 25 ha grid maps of where land use, and changes in land use, are likely to occur.
Systematic design of a robust half-W1 photonic crystal waveguide for interfacing slow light and trapped cold atoms
Creators: name: Bouscal, Adrien
name: Kemiche, Malik
name: Mahapatra, Sukanya
name: Fayard, Nikos
name: Berroir, Jérémy
name: Ray, Tridib
name: Greffet, Jean-Jacques
name: Raineri, Fabrice
name: Levenson, Ariel
name: Bencheikh, Kamel
name: Sauvan, Christophe
name: Urvoy, Alban
name: Laurat, Julien
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Novel platforms interfacing trapped cold atoms and guided light in nanoscale waveguides are a promising route to achieve a regime of strong coupling between light and atoms in single pass, with applications to quantum non-linear optics and quantum simulation. A strong challenge for the experimental development of this emerging waveguide-QED field of research is to combine facilitated optical access for atom transport, atom trapping via guided modes and robustness to inherent nanofabrication imperfections. In this endeavor, here we propose to interface Rubidium atoms with a photonic-crystal waveguide based on a large-index GaInP slab. With a specifically tailored half-W1 design, we show that a large chiral coupling to the waveguide can be obtained and guided modes can be used to form two-color dipole traps for atoms at 116~nm from the edge of the structure. This optimized device should greatly improve the level of experimental control and facilitate the atom integration.
IMPORTANCIA DE LA INVESTIGACIÓN EN LA GESTIÓN EMPRESARIAL PARA EL DESARROLLO ACADÉMICO Y PROFESIONAL
Creators: name: Hilario Rivas, Jorge Luis
Publisher: name: Zenodo
Year: 2024

description: •Visualizar el contexto mundial del avance de la ciencia  y tecnología.

•Entender los tipos de investigación y los niveles de madurez tecnológica.

•Entender que es propiedad intelectual y las patentes.

•Entender el Modelo Efectivo del Proceso de Innovación Tecnológica – MEPIT.

•Entender las exclusiones y las excepciones a la patentabilidad.
Light-cone PDFs from Lattice QCD
Creators: name: Alexandrou, Constantia
name: Cichy, Krzysztof
name: Constantinou, Martha
name: Hadjiyiannakou, Kyriakos
name: Jansen, Karl
name: Scapellato, Aurora
name: Steffens, Fernanda
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Using the approach proposed a few years ago by X. Ji, it has become feasible to extract parton distribution functions (PDFs) from lattice QCD, a task thought to be extremely difficult before Ji's proposal. In this talk, we discuss this approach, in particular different systematic effects that need to be controlled to ultimately have precise determinations of PDFs. Special attention is paid to the analysis of excited states. We emphasize that it is crucial to control excited states contamination and we show an analysis thereof for our lattice data, used to calculate quasi-PDFs and finally light-cone PDFs in the second part of this proceeding (C. Alexandrou et al., Quasi-PDFs from Twisted mass fermions at the physical point).
description: Proceedings of the The 36th Annual International Symposium on Lattice Field Theory LATTICE 2018. 7 pages, 1 figure
title: Das Leben als Gegenstand chemischer Forschung; [1958]
title: Festvortrag des Professors Adolf Butenandt; 486. Stiftungsfest der Ludwig-Maximilians-Universität München m 5. Juli 1958
titleType: Subtitle
Creators: name: Butenandt, Adolf
name: Wiberg, Egon
name: Wiberg, Egon
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2015

description: Erscheinungsjahr ermittelt
HR Practices and Firm Performance: What Matters and Who Does It?
Creators: name: Fabling, Richard
name: Grimes, Arthur
name: Fabling, Richard
name: Grimes, Arthur
Publisher: name: Unknown
Year: 2007
Subjects: subject: Industrial Organization
subject: Resource /Energy Economics and Policy
subject: HR practices
subject: performance pay

description: We examine the impact of human resource practices on firm performance. The analysis uses data from an economy-wide survey to determine whether firms that adopt certain individual HR practices, or that adopt a suite of practices, perform better than their rivals. We find that adoption of a suite of high performance practices (and adoption of specific practices pertaining to staff training and performance pay) impacts positively on firm outcomes. The strength of the relationships differ by firm size and age, having their strongest impact on small and large firms; curiously they do not appear relevant for mid-sized firms. The nature of firms that adopt high performance practices varies strongly according to size, age and sector.
A data science and machine learning approach to continuous analysis of Shakespeare's plays
Creators: name: Swisher, Charles
name: Shamir, Lior
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The availability of quantitative text analysis methods has provided new ways of analyzing literature in a manner that was not available in the pre-information era. Here we apply comprehensive machine learning analysis to the work of William Shakespeare. The analysis shows clear changes in the style of writing over time, with the most significant changes in the sentence length, frequency of adjectives and adverbs, and the sentiments expressed in the text. Applying machine learning to make a stylometric prediction of the year of the play shows a Pearson correlation of 0.71 between the actual and predicted year, indicating that Shakespeare's writing style as reflected by the quantitative measurements changed over time. Additionally, it shows that the stylometrics of some of the plays is more similar to plays written either before or after the year they were written. For instance, Romeo and Juliet is dated 1596, but is more similar in stylometrics to plays written by Shakespeare after 1600. The source code for the analysis is available for free download.
description: Journal of Data Mining and Digital Humanities, accepted
A Parsec-Scale Study of the 5/15 GHz Spectral Indices of the Compact Radio Sources in M82
Creators: name: McDonald, A. R.
name: Muxlow, T. W. B.
name: Wills, K. A.
name: Pedlar, A.
name: Beswick, R. J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations of the starburst galaxy, M82, have been made with the VLA in its A-configuration at 15 GHz and MERLIN at 5 GHz enabling a spectral analysis of the compact radio structure on a scale of < 0.1'' (1.6 pc). Crucial to these observations was the inclusion of the Pie Town VLBA antenna, which increased the resolution of the VLA observations by a factor of ~2. A number of the weaker sources are shown to have thermal spectra and are identified as HII regions with emission measures ~10^7 cm^-6 pc. Some of the sources appear to be optically thick at 5 GHz implying even higher emission measures of ~10^8 cm^-6 pc. The number of compact radio sources in M82 whose origin has been determined is now 46, of which 30 are supernova related and the remaining 16 are HII regions. An additional 15 sources are noted, but have yet to be identified, meaning that the total number of compact sources in M82 is at least 61. Also, it is shown that the distribution of HII regions is correlated with the large-scale ionised gas distribution, but is different from the distribution of supernova remnants. In addition, the brightest HII region at (B1950) 09h 51m 42.21s +69 54' 59.2'' shows a spectral index gradient across its resolved structure which we attribute to the source becoming optically thick towards its centre.
description: Accepted for publication in MNRAS. 15 pages, 9 figures
title: Process developement for manufacturing hybrid components using an in-mould infrared heating device
Creators: name: Beuscher, Jan
name: Schnurr, Raphael
name: Müller, Anke
name: Kühn, Markus
name: Dröder, Klaus
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2018
Subjects: subject: hybrid components
subject: temperature management in thermoplastic production
subject: injection moulding
subject: infrared radiator
subject: integrative manufacturing processes
subject: in-mould technologies
subject: 620

description: Large-scale production technologies for hybrid structures are necessary to force lightweight design into automotive applications. The aim of today’s research is to find economic strategies for efficient manufacturing processes. This study adresses a process development for manufacturing instrinsic hybrid components using an in-mould infrared (IR) heating device [1].
The consisting concept of an integrated IR-radiator [1] has been developed to improve manufacturing processes for material hybrid components dominated by thermoplastic materials. This approach makes use of a substitution of steel with transparent ceramics at local areas of the mould and an the integration of IR-radiators. Thus, the problem of rapid temperature loss of thermoplastic preforms through direct contact to the cold mould surface can be avoided.
This concept has been build up and comprehensive investigations of its usability has been made. The integration of a heating device enables a reduction of station times by utilizing dead times (interims) for heating processes. This also allows a gentle processing of material. The ceramic-faced surface of the preform can be heated up focussed to necessary processing temperatures at specific times. This research work discusses a process development using an in-mould IR heating device.
Chaos in pp-wave spacetimes
Creators: name: Podolsky, J.
name: Vesely, K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We demonstrate chaotic behavior of timelike, null and spacelike geodesics in non-homogeneous vacuum pp-wave solutions. This seems to be the first known example of a chaotic motion in exact radiative spacetime.
description: 4 pages, revtex, 3 figures (.pcx)
Monodromy Representations of the Braid Group
Creators: name: Todorov, Ivan
name: Hadjiivanov, Ludmil
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Chiral conformal blocks in a rational conformal field theory are a far going extension of Gauss hypergeometric functions. The associated monodromy representations of Artin's braid group capture the essence of the modern view on the subject, which originates in ideas of Riemann and Schwarz. Physically, such monodromy representations correspond to a new type of braid group statistics, which may manifest itself in two-dimensional critical phenomena, e.g. in some exotic quantum Hall states. The associated primary fields satisfy R-matrix exchange relations. The description of the internal symmetry of such fields requires an extension of the concept of a group, thus giving room to quantum groups and their generalizations. We review the appearance of braid group representations in the space of solutions of the Knizhnik - Zamolodchikov equation, with an emphasis on the role of a regular basis of solutions which allows us to treat the case of indecomposable representations as well.
description: Plenary talk, presented by I. Todorov at XXIII ICGTMP Dubna, July 31 - August 5, 2000 (19 pages, LaTeX, amsfonts, amssymb)
Impact du débat scientifique sur le changement conceptuel des élèves au cours de l’apprentissage par problématisation des concepts d’oxydoréduction
Creators: name: BOUZAZI, FAYCEL
name: NAIJA, RYM
Publisher: name: Mediterranean Journal of Education
Year: 2023
Subjects: Problematization, scientific debate, conceptual change, macroscopic analysis, mesoscopic analysis, microscopic analysis

description: This article focuses on the analysis of a scientific debate conducted with Tunisian students (17-18 years old) in the third year of an experimental sciences class during the construction of reasoned knowledge about the phenomenon of oxidation-reduction. This work falls within the theoretical framework of problematization. The data are collected from a video recording of the session. The analyses carried out (epistemic analysis and linguistic analysis) show that the debate allows learners to discuss and confront their points of view, their ideas and their initial conceptions on the concepts of oxidation-reduction. Indeed, through exchanges, learners can engage in the construction of arguments, counter-arguments, etc. This can promote a gradual awareness of the limits and insufficiencies of their initial conceptions and prepare a conceptual change from common language to scientific language.
description: Mediterranean Journal of Education, Vol. 3, N. 2 (2023) - Colloque SIEST Méditerranée 8, Tunisia
Nonstandard coproducts and the Izergin-Korepin open spin chain
Creators: name: Nepomechie, Rafael I.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Corresponding to the Izergin-Korepin (A_2^(2)) R matrix, there are three diagonal solutions (``K matrices'') of the boundary Yang-Baxter equation. Using these R and K matrices, one can construct transfer matrices for open integrable quantum spin chains. The transfer matrix corresponding to the identity matrix K=1 is known to have U_q(o(3)) symmetry. We argue here that the transfer matrices corresponding to the other two K matrices also have U_q(o(3)) symmetry, but with a nonstandard coproduct. We briefly explore some of the consequences of this symmetry.
description: 7 pages, LaTeX; v2 has one additional sentence on the degeneracy pattern
Thesis submission and archiving : the Dark Ages
Creators: name: Read, Max
Publisher: name: The University of British Columbia
Year: 2010

description: Surfacing UBC Scholarship: Panel Presentation and Discussion – This panel presentation provides an overview of the development of Electronic Theses and Dissertations (ETDs) at UBC; plans for the future; general information about the advantages of ETDs; and, some examples of ETD successes. This session took place on October 21, 2009 in the Dodson Room of the Irving K. Barber Learning Centre at the University of British Columbia.
Leakage-induced Pipeline Stressing and its Potential Detection by Distributed Fiber Optic Sensing
Creators: name: A. Klar, A.
Publisher: name: Southeast Asian Geotechnical Society
Year: 2019
Subjects: Pipelines
Leaks
Soil-pipe interaction
Elastic solution
Sewage

description: The Geotechnical Engineering Journal of the SEAGS & AGSSEA, 50, 2, pp 85-90
Measurement of meson transition form factors at BESIII
Creators: name: Redmer, C. F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Meson transition form factors describe the coupling of photons and hadrons. They are an important input to the calculations of the light-by-light scattering contribution of the anomalous magnetic moment of the muon. At the BESIII experiment in Beijing, the transition form factors of pseudoscalar mesons are studied in their Dalitz decays, in their radiative production in $e^+e^-$ annihilation, and in their production in two-photon scattering. All relevant kinematic regimes are covered. An overview of the recent results and the status of the ongoing analyses is provided.
description: Talk presented CIPANP2018. 9 pages, LaTeX, 4 pdf figures
Consumer Preferences among Pulp-Fortified and Unfortified Grapefruit Juices from Red and White Fruit
Creators: name: Hunter, J. Scott
name: Hunter, J. Scott
Publisher: name: Unknown
Year: 1960
Subjects: subject: Crop Production/Industries
subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies
subject: Research Methods/ Statistical Methods

description: Excerpts from the report Summary: Under certain conditions of storage, a discoloration of canned red grapefruit juice occurs. A solution to this problem has been developed by the Agricultural Research Service; the appearance of the juice is preserved by fortifying it with pulp during the canning process. Production of red grapefruit juice is increasing, and information is needed on consumers' acceptance of fortified juices. If consumers react favorably, market outlets for red grapefruit might be broadened, more juice could be obtained from a given quantity of fruit, and consumers would receive a product which may be slightly more nutritious. This report presents the results of a study to measure the preferences of consumers among four juices: Pulp-fortified and unfortified juices, from red and white varieties of Texas grapefruit
Imaging Gigahertz Zero-Group-Velocity Lamb Waves
Creators: name: Xie, Qingnan
name: Mezil, Sylvain
name: Otsuka, Paul H
name: Tomoda, Motonobu
name: Laurent, Jérôme
name: Matsuda, Osamu
name: Shen, Zhonghua
name: Wright, Oliver B
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We image GHz zero-group-velocity (ZGV) Lamb waves in the time domain by means of an ultrafast optical technique, revealing their stationary nature and their acoustic energy localization in two dimensions. The acoustic field is imaged to micron resolution on a nanoscale bilayer consisting of a silicon-nitride plate coated with a titanium film. Temporal and spatiotemporal Fourier transforms combined with a technique involving the intensity modulation of the optical pump and probe beams gives access to arbitrary acoustic frequencies, allowing ZGV modes to be isolated. The dispersion curves of the bilayer system are extracted together with the Q factor and lifetime of the first ZGV mode. Applications include the testing of bonded nanostructures.
description: Main : 8 pages (3 figures) - Supplementary : 4 pages (2 fig) - 1 animation
Smart Geosynthetics based on Distributed Fiber-optic Sensors in Geotechnical Engineering
Creators: name: A. Wosniok And K. Krebber
Publisher: name: Southeast Asian Geotechnical Society
Year: 2019
Subjects: Smart geosynthetics
Fiber optic sensor
Distributed sensing
Glass optical fiber (GOF)
Polymer optical fiber (POF)

description: The Geotechnical Engineering Journal of the SEAGS & AGSSEA, 50, 2, pp 91-95
Rapid quantum approaches for combinatorial optimisation inspired by optimal state-transfer
Creators: name: Banks, Robert J.
name: Browne, Dan E.
name: Warburton, P. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a new design heuristic to tackle combinatorial optimisation problems, inspired by Hamiltonians for optimal state-transfer. The result is a rapid approximate optimisation algorithm. We provide numerical evidence of the success of this new design heuristic. We find this approach results in a better approximation ratio than the Quantum Approximate Optimisation Algorithm at lowest depth for the majority of problem instances considered, while utilising comparable resources. This opens the door to investigating new approaches for tackling combinatorial optimisation problems, distinct from adiabatic-influenced approaches.
description: 37 pages, 25 figures, 2 tables
How Do Mothers and Fathers Talk About Parenting to Different Audiences?: Stereotypes and Audience Effects: An Analysis of r/Daddit, r/Mommit, and r/Parenting Using Topic Modelling
Creators: name: Sepahpour-Fard, Melody
name: Quayle, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computers and Society (cs.CY)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: J.4
subject: 68U15

description: While major strides have been made towards gender equality in public life, serious inequality remains in the domestic sphere, especially around parenting. The present study analyses discussions about parenting on Reddit to explore audience effects and gender stereotypes. It suggests a novel method to study topical variation in individuals' language when interacting with different audiences. Comments posted in 2020 were collected from three parenting subreddits, described as being for fathers (r/Daddit), mothers (r/Mommit), and all parents (r/Parenting). Users posting on r/Parenting and r/Daddit or on r/Parenting and r/Mommit were assumed to identify as fathers or mothers, respectively, allowing gender comparison. Users' comments on r/Parenting (to a mixed-gender audience) were compared with their comments to single-gender audiences on r/Daddit or r/Mommit using LDA topic modelling. Results showed that the most discussed topic among parents is about education and family advice, a topic mainly discussed in the mixed-gender subreddit and more by fathers than mothers. Regarding the basic needs of children (sleep, food, and medical care), mothers seemed to be more concerned regardless of the audience. In contrast, topics such as birth and pregnancy announcements and physical appearance were more discussed by fathers in the father-centric subreddit. Overall, findings seem to show that mothers are generally more concerned about the practical sides of parenting while fathers' expressed concerns are more contextual: with other fathers, there seems to be a desire to show their fatherhood and be recognized for it while they discuss education with mothers. These results demonstrate that concerns expressed by parents on Reddit are context-sensitive but also consistent with gender stereotypes, potentially reflecting a persistent gendered and unequal division of labour in parenting.
description: 11 pages, 1 figure, to be published in Proceedings of the ACM Web Conference 2022
TransPlanckian Particles and the Quantization of Time
Creators: name: Hooft, G. 't
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Trans-Planckian particles are elementary particles accelerated such that their energies surpass the Planck value. There are several reasons to believe that trans-Planckian particles do not represent independent degrees of freedom in Hilbert space, but they are controlled by the cis-Planckian particles. A way to learn more about the mechanisms at work here, is to study black hole horizons, starting from the scattering matrix Ansatz. By compactifying one of the three physical spacial dimensions, the scattering matrix Ansatz can be exploited more efficiently than before. The algebra of operators on a black hole horizon allows for a few distinct representations. It is found that this horizon can be seen as being built up from string bits with unit lengths, each of which being described by a representation of the SO(2,1) Lorentz group. We then demonstrate how the holographic principle works for this case, by constructing the operators corresponding to a field in space-time. The parameter t turns out to be quantized in Planckian units, divided by the period R of the compactified dimension.
description: 12 pages plain tex, 1 figure
Stripe Symmetry of Short-range Charge Density Waves in Cuprate Superconductors
Creators: name: Choi, Jaewon
name: Li, Jiemin
name: Nag, Abhishek
name: Pelliciari, Jonathan
name: Robarts, Hannah
name: Tam, Charles C.
name: Walters, Andrew
name: Agrestini, Stefano
name: García-Fernández, Mirian
name: Song, Dongjoon
name: Eisaki, Hiroshi
name: Johnston, Steven
name: Comin, Riccardo
name: Ding, Hong
name: Zhou, Ke-Jin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The omnipresence of charge density waves (CDWs) across almost all cuprate families underpins a common organizing principle. However, a longstanding debate of whether its spatial symmetry is stripe or checkerboard remains unresolved. While CDWs in lanthanum- and yttrium-based cuprates possess a stripe symmetry, distinguishing these two scenarios has been challenging for the short-range CDW in bismuth-based cuprates. Here, we employed high-resolution resonant inelastic x-ray scattering to uncover the spatial symmetry of the CDW in Bi$_2$Sr$_{2-x}$La$_{x}$CuO$_{6+δ}$. Across a wide range of doping and temperature, anisotropic CDW peaks with elliptical shapes were found in reciprocal space. Based on Fourier transform analysis of real-space models, we interpret the results as evidence of unidirectional charge stripes, hosted by mutually 90$^\circ$-rotated anisotropic domains. Our work paves the way for a unified symmetry and microscopic description of CDW order in cuprates.
description: 9 pages, 3 figures and Supplementary Information; Under peer review
New homogeneous Einstein metrics on quaternionic Stiefel manifolds
Creators: name: Arvanitoyeorgos, Andreas
name: Sakane, Yusuke
name: Statha, Marina
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: Primary 53C25, Secondary 53C30, 13P10, 65H10, 68W30

description: We consider invariant Einstein metrics on the quaternionic Stiefel manifolds $V_p\mathbb{H} ^n$ of all orthonormal $p$-frames in $\mathbb{H}^n$. This manifold is diffeomorphic to the homogeneous space $\mathrm{Sp}(n) / \mathrm{Sp}(n-p)$ and its isotropy representation contains equivalent summands. We obtain new Einstein metrics on $V_p\mathbb{H}^n \cong \mathrm{Sp}(n)/\mathrm{Sp}(n-p)$, where $n = k_1 + k_2 + k_3$ and $p = n-k_3$. We view $V_p\mathbb{H}^n$ as a total space over the generalized Wallach space $\mathrm{Sp}(n) / (\mathrm{Sp}(k_1) \times \mathrm{Sp}(k_2) \times \mathrm{Sp}(k_3))$ and over the generalized flag manifold $\mathrm{Sp}(n) / (\mathrm{U}(p) \times \mathrm{Sp}(n-p))$.
description: 19 pages
Concurrent normals of immersed manifolds
Creators: name: Panina, Gaiane
name: Siersma, Dirk
Publisher: name: arXiv
Year: 2023
Subjects: subject: Geometric Topology (math.GT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: It is conjectured since long that for any convex body $K \subset \mathbb{R}^n$ there exists a point in the interior of $K$ which belongs to at least $2n$ normals from different points on the boundary of $K$. The conjecture is known to be true for $n=2,3,4$.
 Motivated by a recent results of Y. Martinez-Maure, and an approach by A. Grebennikov and G. Panina, we prove the following: Let a compact smooth $m$-dimensional manifold $M^m$ be immersed in $ \mathbb{R}^n$. We assume that at least one of the homology groups $H_k(M^m,\mathbb{Z}_2)$ with $k
Loss of Flexibility in Geosynthetics Subjected to Chemical Exposure: Experiments, Constitutive Models and Computations and Estimates for Contaminant Leakage
Creators: name: A. P.S. Selvadurai
Publisher: name: Southeast Asian Geotechnical Society
Year: 2019
Subjects: Geosynthetics
Loss of plasticizer
Constitutive modelling
Membrane indentation tests
Computational modelling

description: The Geotechnical Engineering Journal of the SEAGS & AGSSEA, 50, 2, pp 96-106
Crossover from a square to a hexagonal pattern in Faraday surface waves
Creators: name: Wagner, C.
name: Mueller, H. W.
name: Knorr, K.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We report on surface wave pattern formation in a Faraday experiment operated at a very shallow filling level, where modes with a subharmonic and harmonic time dependence interact. Associated with this distinct temporal behavior are different pattern selection mechanisms, favoring squares or hexagons, respectively. In a series of bifurcations running through a pair of superlattices the surface wave pattern transforms between the two incompatible symmetries. The close analogy to 2D and 3D crystallography is pointed out.
description: 4 pages, 4 figures
Exploration des connaissances procédurales et déclaratives dans l’enseignement : cas de la loi des mailles
Creators: name: OUESLATI, AHLEM
name: NAIJA, RYM
Publisher: name: Mediterranean Journal of Education
Year: 2023
Subjects: Procedural and declarative knowledge, knowledge content-related pedagogical (PCK)

description: The implementation of a teaching in class, leads the teacher to have to mobilize different types of knowledge. Depending on the teacher, the context of his teaching, the analysis of the teacher’s activity makes it possible to identify declarative and procedural knowledge relating to the knowledge taught, as well as pedagogical knowledge (PCK) related to the regulation of teaching. In this article, an example of an analysis of a teacher’s activity is presented in the case of the teaching of the law of mesh in high school.
description: Mediterranean Journal of Education, Vol. 3, N. 2 (2023) - Colloque SIEST Méditerranée 8, Tunisia
Rule extraction based on extreme learning machine and an improved ant-miner algorithm for transient stability assessment
Creators: name: Li, Yang
name: Li, Guoqing
name: Wang, Zhenhao
Publisher: name: arXiv
Year: 2018
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In order to overcome the problems of poor understandability of the pattern recognition-based transient stability assessment (PRTSA) methods, a new rule extraction method based on extreme learning machine (ELM) and an improved Ant-miner (IAM) algorithm is presented in this paper. First, the basic principles of ELM and Ant-miner algorithm are respectively introduced. Then, based on the selected optimal feature subset, an example sample set is generated by the trained ELM-based PRTSA model. And finally, a set of classification rules are obtained by IAM algorithm to replace the original ELM network. The novelty of this proposal is that transient stability rules are extracted from an example sample set generated by the trained ELM-based transient stability assessment model by using IAM algorithm. The effectiveness of the proposed method is shown by the application results on the New England 39-bus power system and a practical power system - the southern power system of Hebei province.
description: Accepted by PloS one
A Comparison of p-p, p-Pb, Pb-Pb Collisions in the Thermal Model: Multiplicity Dependence of Thermal Parameters
Creators: name: Sharma, Natasha
name: Cleymans, Jean
name: Hippolyte, Boris
name: Paradza, Masimba
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: % An analysis is made of the particle composition (hadrochemistry) of the final state in proton-proton (p-p), proton-lead (p-Pb) and lead-lead (Pb-Pb) collisions as a function of the charged particle multiplicity ($\dNchdeta$). The thermal model is used to determine the chemical freeze-out temperature as well as the radius and strangeness saturation factor $γ_s$. Three different ensembles are used in the analysis namely, the grand canonical ensemble, the canonical ensemble with exact strangeness conservation and the canonical ensemble with exact baryon number, strangeness and electric charge conservation. It is shown that for high multiplicities (at least 20 charged hadrons in the mid-rapidity interval considered) the three ensembles lead to the same results.
description: 11 pages, 5 figures. arXiv admin note: text overlap with arXiv:1803.05409
International Journal of South Asian Studies
Creators: name: Nelika, Govind
Publisher: name: figshare
Year: 2019
Subjects: subject: 200519 South-East Asian Literature (excl. Indonesian)
subject: FOS: Languages and literature
subject: 160699 Political Science not elsewhere classified
subject: FOS: Political science
subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: History

description: The Journal for South Asian Studies a Biannual Journal of South Asian Studies
Chiral glass: a new equilibrium phase of ceramic high-Tc superconductors
Creators: name: Kawamura, Hikaru
name: Li, Mai Suan
Publisher: name: arXiv
Year: 1997
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Possible occurrence of an equilibrium thermodynamic phase with a spontaneously broken time-reversal symmetry is studied in a model ceramic superconductor with anisotropic pairing symmetry. It is shown by Monte Carlo simulations that such a ``chiral-glass'' phase is truly stable even under the influence of screening. Existence of frustration in zero external field, arising from the d-wave pairing symmetry of high-T_c superconductors, is essential to realize this phase. Via a finite-size scaling analysis, critical exponents associated with the chiral-glass transition are estimated to be ν_CG=1.3\pm 0.2 and η_CG=-0.2\pm 0.2. These values turn out to be close to those of the Ising spin glass. Phase diagram of the model is constructed and the implications to experiments are discussed.
description: 30 pages, 23 figures, LaTex
Monitoring of Buried Pipeline using Distributed Fibre Optic Technologies: Combined Acoustic-Temperature-Strain sensing
Creators: name: C. Prohasky, R. Vivekanantham
Publisher: name: Southeast Asian Geotechnical Society
Year: 2019
Subjects: Brillouin scattering
Rayleigh scattering
Raman scattering
Distributed sensor
COTDR
Buried pipe

description: The Geotechnical Engineering Journal of the SEAGS & AGSSEA, 50, 2, pp 107-112