cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Statistics of mode area for transverse Anderson localization in disordered optical fibers
Creators: name: Abaie, Behnam
name: Mafi, Arash
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We introduce the mode area probability density function (MA-PDF) as a powerful tool to study transverse Anderson localization (TAL), especially for highly disordered optical fibers. The MA-PDF encompasses all the relevant statistical information on TAL; it relies solely on the physics of the disordered system and is independent of the shape of the external excitation. We explore the scaling of MA-PDF with the transverse dimensions of the system and show that it converges to a terminal form for structures considerably smaller than those used in experiments, hence substantially reducing the computational cost to study TAL.
title: Altersstrukturen in kategorialer Perspektive
title: Vortrag beim Brentano Institut für Kategorienwissenschaft, Leipzig, 27.02.2014
titleType: Subtitle
Creators: name: Tenckhoff, Jürgen Theo
Publisher: name: Zenodo
Year: 2014
Subjects: Altersstrukturen
Kategoriale Analyse
Demografie
Unternehmensentwicklung
Personalplanung
Altersakzeptanz
Loyalität

description: Der Vortrag untersucht Altersstrukturen in Belegschaften aus einer kategorialen Perspektive. Dabei werden klassische und dynamische Modelle der Altersakzeptanz in Unternehmen analysiert. Es werden verschiedene Strukturmodelle vorgestellt, darunter kategoriale Beschäftigungsphasen, Wachstums- und Schrumpfungsdynamiken sowie gesellschaftliche Einflüsse auf Altersakzeptanz und Loyalität.
Wave-Optics Modeling of the Optical-Transport Line for Passive Optical Stochastic Cooling
Creators: name: Andorf, M. B.
name: Lebedev, V. A.
name: Piot, P.
name: Ruan, J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Optical stochastic cooling (OSC) is expected to enable fast cooling of dense particle beams. Transition from microwave to optical frequencies enables an achievement of stochastic cooling rates which are orders of magnitude higher than ones achievable with the classical microwave based stochastic cooling systems. A subsytem critical to the OSC scheme is the focusing optics used to image radiation from the upstream "pickup" undulator to the downstream "kicker" undulator. In this paper, we present simulation results using wave-optics calculation carried out with the {\sc Synchrotron Radiation Workshop} (SRW). Our simulations are performed in support to a proof-of-principle experiment planned at the Integrable Optics Test Accelerator (IOTA) at Fermilab. The calculations provide an estimate of the energy kick received by a 100-MeV electron as it propagates in the kicker undulator and interacts with the electromagnetic pulse it radiated at an earlier time while traveling through the pickup undulator.
description: 4 pages, 4 figures, submitted to NIMA (Proceedings of the EAAC17 workshop)
Design & development of position sensitive detector for hard X-ray using SiPM and new generation scintillators
Creators: name: Goyal, S. K.
name: Naik, Amisha P.
name: S., Mithun N. P.
name: Vadawale, S. V.
name: Tiwari, Neeraj K.
name: Chattopadhyay, T.
name: Nagrani, N.
name: Madhavi, S.
name: ladiya, T.
name: Patel, A. R.
name: Shanmugam, M.
name: Adalja, H. L.
name: patel, V. R.
name: Ubale, G. P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: There is growing interest in high-energy astrophysics community for the development of sensitive instruments in the hard X-ray energy extending to few hundred keV. This requires position sensitive detector modules with high efficiency in the hard X-ray energy range. Here, we present development of a detector module, which consists of 25 mm x 25 mm CeBr3 scintillation detector, read out by a custom designed two dimensional array of Silicon Photo-Multipliers (SiPM). Readout of common cathode of SiPMs provides the spectral measurement whereas the readout of individual SiPM anodes provides measurement of interaction position in the crystal. Preliminary results for spectral and position measurements with the detector module are presented here.
description: Published in SPIE Proceedings Vol. 10392
Rotational Analog of the Hall Effect: Coriolis Contribution to Electric Current
Creators: name: Ahmedov, B. J.
name: Ermamatov, M. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A galvanogyroscopic effect which is the rotational analog of the gravitomagnetic Hall effect has been proposed. As a consequence of Ohm's law in the rotating frame, the effect of the Coriolis force on the conduction current is predicted to give rise to an azimuthal potential difference $V_{gg}$ about $10^{-3}V$ in a spinning rotor carrying radial electric current $i_r$. The potential difference developed by the galvanogyroscopic effect is proportional both to angular velocity ${\mathbf Ω}$ and to the electric current.
description: 8 pages, 1 figure
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Cart. 192 (11 H 77), 295 folios, f. 0176v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: Petot, Frédéric
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0176v, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VIII, Archives départementales de la Côte-d'Or, Cart. 192 (11 H 77), 295 folios, f. 0176v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
On-Demand Generation of Indistinguishable Photons in the Telecom C-Band using Quantum Dot Devices
Creators: name: Vajner, Daniel A.
name: Holewa, Paweł
name: Zięba-Ostój, Emilia
name: Wasiluk, Maja
name: von Helversen, Martin
name: Sakanas, Aurimas
name: Huck, Alexander
name: Yvind, Kresten
name: Gregersen, Niels
name: Musiał, Anna
name: Syperek, Marcin
name: Semenova, Elizaveta
name: Heindel, Tobias
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Semiconductor quantum dots (QDs) enable the generation of single and entangled photons, useful for various applications in photonic quantum technologies. Specifically for quantum communication via fiber-optical networks, operation in the telecom C-band centered around 1550$\,$nm is ideal. The direct generation of QD-photons in this spectral range and with high quantum-optical quality, however, remained challenging. Here, we demonstrate the coherent on-demand generation of indistinguishable photons in the telecom C-band from single QD devices consisting of InAs/InP QD-mesa structures heterogeneously integrated with a metallic reflector on a silicon wafer. Using pulsed two-photon resonant excitation of the biexciton-exciton radiative cascade, we observe Rabi rotations up to pulse areas of $4π$ and a high single-photon purity in terms of $g^{(2)}(0)=0.005(1)$ and $0.015(1)$ for exciton and biexciton photons, respectively. Applying two independent experimental methods, based on fitting Rabi rotations in the emission intensity and performing photon cross-correlation measurements, we consistently obtain preparation fidelities at the $π$-pulse exceeding 80$\%$. Finally, performing Hong-Ou-Mandel-type two-photon interference experiments we obtain a photon-indistinguishability of the full photon wave packet of up to $35(3)\%$, representing a significant advancement in the photon-indistinguishability of single photons emitted directly in the telecom C-band.
description: Main text: 24 pages (including 4 figures, 1 table, and 56 citations); Supporting Information: 18 pages (including 10 figures and 3 tables);
Deduction of Initial Strategy Distributions of Agents in Mix-game Model
Creators: name: Gou, Chengling
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: This paper reports the effort of deducing the initial strategy distributions of agents in mix-game model which is used to predict a real financial time series generated from a target financial market. Using mix-game to predict Shanghai Index, we find the time series of prediction accurate rates is sensitive to the initial strategy distributions of agents in group 2 who play minority game, but less sensitive to the initial strategy distributions of agents in group 1 who play majority game. And agents in group 2 tend to cluster in full strategy space (FSS) if the real financial time series has obvious tendency (upward or downward), otherwise they tend to scatter in FSS. We also find that the initial strategy distributions and the number of agents in group 1 influence the level of prediction accurate rates. Finally, this paper gives suggestion about further research.
description: 8 figures, 2 tables, 10 pages
DEP Bulletin:Volume 33 Issue 13
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2009

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.
Validating AI-Generated Code with Live Programming
Creators: name: Ferdowsi, Kasra
name: Huang, Ruanqianqian
name: James, Michael B.
name: Polikarpova, Nadia
name: Lerner, Sorin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: AI-powered programming assistants are increasingly gaining popularity, with GitHub Copilot alone used by over a million developers worldwide. These tools are far from perfect, however, producing code suggestions that may be incorrect in subtle ways. As a result, developers face a new challenge: validating AI's suggestions. This paper explores whether Live Programming (LP), a continuous display of a program's runtime values, can help address this challenge. To answer this question, we built a Python editor that combines an AI-powered programming assistant with an existing LP environment. Using this environment in a between-subjects study (N=17), we found that by lowering the cost of validation by execution, LP can mitigate over- and under-reliance on AI-generated programs and reduce the cognitive load of validation for certain types of tasks.
description: 8 pages, 4 figures
MODELAÇÃO CRONOLÓGICA DE SEQUÊNCIAS SEDIMENTARES DO ESTUÁRIO DA RIBEIRA DE BENSAFRIM COM RECURSO À ESTATÍSTICA BAYESIANA
Creators: name: Cesário Portela, Paulo J.
name: Matos Martins, José Manuel
name: Monge Soares, António Manuel
name: Ramos-Pereira, Ana
name: Araújo-Gomes, João
name: Torres, André
Publisher: name: Finisterra
Year: 2019

description: O estuário da Ribeira de Bensafrim, no Barlavento algarvio, foi um dos sistemas flúvio-marinhos utilizado para avaliar a evolução de ambientes costeiros ao longo dos últimos 5000 anos. Datou-se pelo radiocarbono a matéria orgânica sedimentar presente nos testemunhos verticais colhidos neste estuário. Tendo em conta o registo estratigráfico associado aos dados cronológicos obtidos, foi utilizada uma abordagem estatística bayesiana, fazendo uso do software de calibração OxCal, para obter um enquadramento geocronológico robusto para a sequência sedimentar. A análise efetuada, baseada na construção de um modelo de deposição para a sequência sedimentar, permitiu identificar a presença de outliers, bem como estabelecer um enquadramento geocronológico para os últimos 5000 anos no Barlavento algarvio. Para além deste enquadramento, verifica-se que o modelo geocronológico idealizado, associado à caracterização sedimentológica de um dos testemunhos, aponta para a presença de eventos de alta energia, designadamente o tsunami que se seguiu ao terramoto de Lisboa de 1755.
description: Finisterra, vol. 54 n.º 112 (2019)
The Canonical Symmetry for Integrable Systems
Creators: name: Leznov, A. N.
name: Razumov, A. V.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The properties of discrete nonlinear symmetries of integrable equations are investigated. These symmetries are shown to be canonical transformations. On the basis of the considered examples, it is concluded, that the densities of the conservation laws are changed under these transformations by spatial divergencies.
description: 17 pages, LaTeX, IHEP 92-146
Two-way speed of light and Lorentz-FitzGerald's contraction in aether theory
Creators: name: Levy, Joseph
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: This paper aims at demonstrating that: 1/ Assuming the equality of the two-way transit time of light in vacuo, along the two perpendicular arms of Michelson's interferometers (modern versions of Michelson's experiment), and the anisotropy of the one-way speed of light in the Earth frame, two facts supported today by strong experimental arguments, length contraction (in Lorentz and FitzGerald's approach) should no longer be regarded as an ad hoc hypothesis, it appears necessary and can be easily deduced. 2/ Builder and Prokhovnik had the great merit of having shown that, as a result of to length contraction, the two-way transit time of light along a rod is the same in all directions in space (and not only in two privileged directions). We agree with these authors up to this point, but, contrary to what is often believed, their approach failed to reconcile aether theory with the invariance of the apparent (measured) two-way speed of light. Yet, as we shall show, due to the systematic measurement distortions entailed by length contraction and clock retardation assumed by aether theory, the two-way speed of light, although anisotropic and dependent on the absolute speed of the frame where it is measured, is always found equal to C. The reasons of this paradoxical but important result will be developed here. They confirm Lorentz-Fitzgerald's contraction and lend support of the existence of a preferred aether frame.
description: 12 pages, 5 figures. This essay appeared for the first time in the Late papers of the PIRT meeting VII, University of London, 15-18 September 2000. A first updated version (v1) was published in ArXiv, 31 March 2006. This version (v2) deals in more detail
On-off switch and sign change for non-local Josephson diode in spin-valve Andreev molecules
Creators: name: Hodt, Erik Wegner
name: Linder, Jacob
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Andreev molecules consist of two coherently coupled Josephson junctions and permit non-local control over supercurrents. By making the barriers magnetic and thus creating a spin-valve, we predict that a non-local Josephson diode effect occurs that is switchable via the magnetic configuration of the barriers. The diode effect is turned on, off, or changes its sign depending on whether the spin-valve is in a parallel, normal, or antiparallel configuration. These results offer a way to exert complete control over a non-local Josephson diode effect via the spin degree of freedom rather than varying a global magnetic flux which affects the entire system and likely neighbouring components in a device architecture.
description: 5 pages, 4 figures
Sustainability of AI-scale digital research infrastructure
Creators: name: Quenette, Steve
Publisher: name: Zenodo
Year: 2023
Subjects: sustainability
sovereignty
generative AI

description: A decade of the cloud movement has inadvertently produced global year-on-year data centre energy efficiencies. Over this period, total data centre electricity use has barely grown, but we are using over 500x more (virtualised) servers. Recently the world has been captured by a disruption popularised by ChatGPTv3 - how Large Language Model forms of deep learning AI will imminently transform business, society and research. Unlike the Web-2.0 era, adapting LLMs to an organisation or project is compute-intensive, requiring dedicated use of traditionally HPC-scale facilities. The electricity needed for data centres will explode, raising significant environmental and cost questions. Are we ready for this?

This workshop covers three distinct groups of our ecosystem: large research-centric datacentres, exposure to emerging sustainability (ICT) technology vendors and research organisations. It will educate on the AI-driven transition and how this will affect the digital infrastructure landscape and inform sovereign direction. It will showcase some emerging approaches & technologies to mitigate and alleviate. It will be interactive in assessing the current awareness and situation. A summary report will be openly published.

The official page for the workshop is https://www.innateinnovation.co/workshop23, where you can learn to expect, who is participating and other further developments.
International Peace Journalism (PJ) practice.docx
Creators: name: BHOWMIK, SIMA
name: Beyene, Zenebe
Publisher: name: figshare
Year: 2021
Subjects: subject: 190301 Journalism Studies
subject: FOS: Media and communications

description: Reporting conflicts is now a significant feature in news coverage in different parts of the world. However, studies on media coverage of conflicts focus on how media frame events while overlooking journalists’ awareness of peace journalism (PJ). To fill the gap, this study sought to investigate the level of awareness of PJ among Bangladeshi and Ethiopian journalists. A sample of journalists from each country participated in a survey whose findings revealed that most of them do not have any training on PJ. The findings also show random and accidental practice of PJ among reporters, a factor that can affect the overall role of the media during conflicts.
REFLEXÃO TEÓRICA SOBRE O PAPEL DA DOCÊNCIA UNIVERSITÁRIA E DA INVESTIGAÇÃO NA FORMAÇÃO DE UMA CIDADANIA SUSTENTÁVEL EM TETE (MOÇAMBIQUE)
Creators: name: Amador, Filomena
name: Laissone, Elton
name: Joaquim, Teresa
Publisher: name: Finisterra
Year: 2019

description: A crise da sociedade moderna aconselha os/as investigadores/as a não se limitarem à explicação dos factos, mas a assumirem um papel de intervenção social na construção de identidades e de sentidos. Este estudo pretende debater o papel do/a investigador/a na formação de cidadanias ativas e engajadas em Tete (Moçambique), adotando como referência o conceito de “cidadania sustentável”. Por um lado, a crise social desperta a necessidade de uma intervenção cidadã local e de uma valorização de saberes tradicionais no que podemos considerar o reconhecimento de um quadro identitário e epistemológico em que, sem perder o sentido do global, se tenha em atenção as realidades locais. O trabalho assume-se como de reflexão teórica, suportado por um conjunto de dados empíricos, em que se procura olhar para o/a investigador/a como pessoas que buscam o sentido da cidadania, com vista a uma prática engajada, no tempo e no espaço em que lhe cabe trabalhar.
description: Finisterra, vol. 54 n.º 112 (2019)
AZARES Y DECISIONES RECUERDOS PERSONALES
Creators: name: Gaspar, Jorge
Publisher: name: Finisterra
Year: 2019

description: Azares y decisiones, um título que resume, com rigor, uma vida, a vida. Senti ao ler estas memórias o fascínio da releitura, do retorno a tantos momentos, lugares e pensamentos, de que é feita uma vida e dos possíveis reencontros que ocorrem com a minha própria vida.
description: Finisterra, vol. 54 n.º 112 (2019)
Plastic scintillation detectors for dose monitoring in digital breast tomosynthesis
Creators: name: Antunes, J.
name: Machado, J.
name: Peralta, L.
name: Matela, N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Plastic scintillators detectors (PSDs) have been studied as dosimeters, since they provide a cost-effective alternative to conventional ionization chambers. Measurement and analysis of energy dependency were performed on a Siemens Mammomat tomograph for two different peak kilovoltages: 26 kV and 35 kV. Both PSD displayed good linearity for each energy considered and almost no energy dependence.
description: 5 pages, 3 figures, 1 table
Coexistence of metallicity and superconductivity in adjacent bilayers of a high-Tc superconductor
Creators: name: Zabolotnyy, V. B.
name: Borisenko, S. V.
name: Kordyuk, A. A.
name: Geck, J.
name: Inosov, D.
name: Koitzsch, A.
name: Fink, J.
name: Knupfer, M.
name: Buechner, B.
name: Drechsler, S. -L.
name: Patthey, L.
name: Hinkov, V.
name: Keimer, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Experimental studies of the electronic structure remain the basic means for understanding the nature of high-temperature superconductivity (HTSC) and testing relevant theoretical models. Appreciable contributions to establish the overall picture in HTSC have recently been made by investigations on the charge dynamics in BSCCO (ref. 1) and the spin dynamics in YBCO, using Angle Resolved Photoemission Spectroscopy (ARPES) and Inelastic Neutron Scattering (INS), respectively. Concentration of each of these techniques on a "suitable" compound turns out to be a barrier on the way to a crucial quantitative test allowing to support or discard spin fluctuations (interaction between the charge and spin degrees of freedom) as a possible origin for the pairing in doped cuprates. Here we solve the long-standing puzzle of ARPES on YBCO by showing that the photoelectron spectrum of YBCO generally includes two components: One from the topmost anomalously overdoped metallic CuO2 bilayer and the other from the next superconducting bilayer that retains the bulk properties. Our findings clearly show the opening of a large superconducting gap and, for the first time, demonstrate the anisotropic renormalization in the bulk component of YBCO, supporting the universality of these effects for different cuprate families. With our study we re-open this cuprate family for new systematic ARPES investigations.
description: 4 pages, 3 figures
Intercalated europium metal in epitaxial graphene on SiC
Creators: name: Anderson, Nathaniel A.
name: Hupalo, Myron
name: Keavney, David
name: Tringides, Michael C.
name: Vaknin, David
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: X-ray magnetic circular dichroism (XMCD) reveal the magnetic properties of intercalated europium metal under graphene on SiC(0001). Intercalation of Eu nano-clusters (average size 2.5 nm) between graphene and SiC substate are formed by deposition of Eu on epitaxially grown graphene that is subsequently annealed at various temperatures while keeping the integrity of the graphene layer. Using sum-rules analysis of the XMCD of Eu M$_{4,5}$ edges at $T = 15$ K, our samples show paramagnetic-like behavior with distinct anomaly at T $\approx$ 90 K which may be related to the N{è}el transition, T$_N$ = 91 K, of bulk metal Eu. We find no evidence of ferromagnetism due to EuO or antiferromagnetism due to Eu$_2$O$_3$ indicating that the graphene layer protects the intercalated metallic Eu against oxidation over months of exposure to atmospheric environment.
description: 6 pages, 5 figures
Performing quantum entangled biphoton spectroscopy using classical light pulses
Creators: name: Ko, Liwen
name: Cook, Robert L.
name: Whaley, K. Birgitta
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We show that for a class of quantum light spectroscopy (QLS) experiments using n = 0,1,2,$\cdots$ classical light pulses and an entangled photon pair (a biphoton state) where one photon acts as a reference without interacting with the matter sample, identical signals can be obtained by replacing the biphotons with classical-like coherent states of light, where these are defined explicitly in terms of the parameters of the biphoton states. An input-output formulation of quantum nonlinear spectroscopy is used to prove this equivalence. We demonstrate the equivalence numerically by comparing a classical pump - quantum probe experiment with the corresponding classical pump - classical probe experiment. This analysis shows that understanding the equivalence between entangled biphoton probes and carefully designed classical-like coherent state probes leads to quantum-inspired classical experiments and provides insights for future design of QLS experiments that could provide a true quantum advantage.
On the Role of Penning Ionization in Photoassociation Spectroscopy
Creators: name: van der Zwan, E.
name: van Oosten, D.
name: Nehari, D.
name: van der Straten, P.
name: Stoof, H. T. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study the role of Penning ionization on the photoassociation spectra of He(^3S)-He(^3S). The experimental setup is discussed and experimental results for different intensities of the probe laser are shown. For modelling the experimental results we consider coupled-channel calculations of the crossing of the ground state with the excited state at the Condon point. The coupled-channel calculations are first applied to model systems, where we consider two coupled channels without ionization, two coupled channels with ionization, and three coupled channels, for which only one of the excited states is ionizing. Finally, coupled-channel calculations are applied to photoassociation of He(^3S)-He(^3S) and good agreement is obtained between the model and the experimental results.
description: 14 pages, 18 figures, submitted to the special issue on Cold Molecules of J. Phys. B
India in 2 °C and well below 2 °C worlds: Opportunities and challenges
Creators: name: Saritha S. Vishwanathan
name: Garg, Amit
name: Tiwari, Vineet
name: P. R. Shukla
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: India's contributions to meeting global mean temperature increases of 2 °C or well below 2 °C would require transformational changes in its energy systems. A bottom-up model analyzes alternate futures (reference, intended nationally determined contributions and low-carbon scenarios) assuming equal per-capita cumulative emissions rights from 2011 through 2050. The cumulative CO2 budget for India for low-carbon scenarios during this period is estimated to be around 115 Bt-CO2, as against 165 Bt-CO2 for the reference scenario. To achieve such emission reductions, while maintaining high economic growth and meeting sustainable development goals, the paper projects that a range of endemic transformations are required such as shifting toward cleaner fuels, resource efficient technologies, widespread use of Information and communication technology (ICTs) to balance demand and supply (e.g. smart grids), substituting demand in transport (e.g. work from home), aggressive promotion of renewables, lifestyle changes, and CO2 capture, storage and use. Modeling decarbonization to meet the needs of the increasing population and urbanization faces myriad challenges due to the distributed nature of technologies used to provide various services, involving risks and uncertainties. The paper finally outlines specific opportunities and challenges faced to meet the increased mitigation ambition to limit the warming to 2 °C and below.
Spin and chiral stiffness of the XY spin glass in two dimensions
Creators: name: Weigel, Martin
name: Gingras, Michel J. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We analyze the zero-temperature behavior of the XY Edwards-Anderson spin glass model on a square lattice. A newly developed algorithm combining exact ground-state computations for Ising variables embedded into the planar spins with a specially tailored evolutionary method, resulting in the genetic embedded matching (GEM) approach, allows for the computation of numerically exact ground states for relatively large systems. This enables a thorough re-investigation of the long-standing questions of (i) extensive degeneracy of the ground state and (ii) a possible decoupling of spin and chiral degrees of freedom in such systems. The new algorithm together with appropriate choices for the considered sets of boundary conditions and finite-size scaling techniques allows for a consistent determination of the spin and chiral stiffness scaling exponents.
description: 6 pages, 2 figures, proceedings of the HFM2006 conference, to appear in a special issue of J. Phys.: Condens. Matter
Connecting systems and process. End to end research data management at University of Canberra
Creators: name: Nair, Anesh
Publisher: name: Zenodo
Year: 2023

description: Researchers are required to submit data management plans (DMPs) and obtain ethics clearance before they start a research project. They are also encouraged / required to publish and share their data. Universities are actively involved in helping researchers comply with policies and best practices, disseminating research outputs and monitoring compliance.

The University of Canberra (UC) has recently completed several projects aimed at providing researchers with a DMP platform that links with new and existing tools, as well engaging with UC researchers, outlining why and how to use DMP platforms.

In this talk, we highlight how UC tapped into PURE's (data management platform) potential as a workflow tool by working closely with Elsevier, QCIF and Infonetica (ethics platform) to link its new DMP tool ReDBox to data manager and publishing tools Data Monitor and DC (Digital Commons) Data and to existing UC platforms, PURE and Infonetica.

We outline how UC then engaged with its research communities to navigate these new tools. We identified key researcher stakeholders: HDR [PhD] students, academic staff, and primary supervisors, and spoke with them within each of UC's five faculties.

Finally, as part of the ARDC's Institutional Underpinnings Project Phase I, we describe the guidelines and materials produced which cover our various system integrations and engagement strategies, available for other institutions which may facing similar DMP challenges, and we present the conclusion of an ambitious project we started in 2021.
The running coupling from gluon and ghost propagators in the Landau gauge: Yang-Mills theories with adjoint fermions
Creators: name: Bergner, Georg
name: Piemonte, Stefano
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Non-Abelian gauge theories with fermions transforming in the adjoint representation of the gauge group (AdjQCD) are a fundamental ingredient of many models that describe the physics beyond the Standard Model. Two relevant examples are N=1 Supersymmetric Yang-Mills (SYM) theory and Minimal Walking Technicolor, which are gauge theories coupled to one adjoint Majorana and two adjoint Dirac fermions, respectively. While confinement is a property of N=1 SYM, Minimal Walking Technicolor is expected to be infrared conformal. We study the propagators of ghost and gluon fields in the Landau gauge to compute the running coupling in the MiniMom scheme. We analyze several different ensembles of lattice Monte Carlo simulations for the SU(2) adjoint QCD with Nf=1/2, 1, 3/2, and 2 Dirac fermions. We show how the running of the coupling changes as the number of interacting fermions is increased towards the conformal window.
description: 28 pages, 12 figures
Transient Nanoscopic Phase Separation in Biological Lipid Membranes Resolved by Planar Plasmonic Antennas
Creators: name: Winkler, Pamina M.
name: Regmi, Raju
name: Flauraud, Valentin
name: Brugger, Jürgen
name: Rigneault, Hervé
name: Wenger, Jérôme
name: García-Parajo, María F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Nanoscale membrane assemblies of sphingolipids, cholesterol, and certain proteins, also known as lipid rafts, play a crucial role in facilitating a broad range of important cell functions. Whereas on living cell membranes lipid rafts have been postulated to have nanoscopic dimensions and to be highly transient, the existence of a similar type of dynamic nanodomains in multicomponent lipid bilayers has been questioned. Here, we perform fluorescence correlation spectroscopy on planar plasmonic antenna arrays with different nanogap sizes to assess the dynamic nanoscale organization of mimetic biological membranes. Our approach takes advantage of the highly enhanced and confined excitation light provided by the nanoantennas together with their outstanding planarity to investigate membrane regions as small as 10 nm in size with microsecond time resolution. Our diffusion data are consistent with the coexistence of transient nanoscopic domains in both the liquid-ordered and the liquid-disordered microscopic phases of multicomponent lipid bilayers. These nanodomains have characteristic residence times between 30 and 150 μs and sizes around 10 nm, as inferred from the diffusion data. Thus, although microscale phase separation occurs on mimetic membranes, nanoscopic domains also coexist, suggesting that these transient assemblies might be similar to those occurring in living cells, which in the absence of raft-stabilizing proteins are poised to be short-lived. Importantly, our work underscores the high potential of photonic nanoantennas to interrogate the nanoscale heterogeneity of native biological membranes with ultrahigh spatiotemporal resolution.
FLOOD RISK MANAGEMENT: IMPLEMENTATION OF THE EUROPEAN DIRECTIVE 2007/60/EC IN THE AUTONOMOUS REGION OF MADEIRA
Creators: name: Mileu, Nelson
name: Rodrigues, António Carmona
name: Valente, Adelaide
Publisher: name: Finisterra
Year: 2019

description: The Decree-Law no. 115/2010, of October 22 where the Directive 2007/60/EC of the European Parliament and of the Council of 23 October 2007 on the assessment and management of flood risks is transposed into Portuguese national law, establish a framework for the assessment and management of flood risks. Flash floods and debris events have a long history in Madeira Island resulting in several adverse impacts on human health, environment, cultural heritage and economic activity. For this reason and since the catastrophic debris event of 20 February 2010 the establishment of flood risk management plan in Autonomous Region of Madeira assumes a double importance. The aim of the paper is to present flood risk analysis methods and technical options adopted in the elaboration of flood hazard and flood risk maps as well the flood risk management plan strategy. For showing the principles and stages of Flood Risk Directive implementation in the Autonomous Region of Madeira, Socorridos watershed is used as case study. Nevertheless some limitations associated with the volcanic mountain island characteristics and the debris events specificities, the flood risk analysis methods used are in harmony with the requirements of the Flood Risk Directive. Another important issue is the flood risk management plan strategy that addresses all aspects of flood risk management.
description: Finisterra, vol. 54 n.º 112 (2019)
Estimation of the cost of greenhouse gas reduction in Korea under the global scenario of 1.5 °C temperature increase
Creators: name: Jung, Tae Yong
name: Park, Chan
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: This paper assesses the feasibility of reducing greenhouse gas (GHG) emissions in Korea to pursue efforts to limit the global temperature increase to 1.5 °C above pre-industrial levels, as considered in the Paris Agreement. Economic cost, risk and possibility of climate commitment are examined using different burden-sharing schemes and using a computable general equilibrium model based on assumptions of future socioeconomic conditions. Four scenarios are used for 2050, including a Nationally Determined Contribution (NDC) extended scenario and one of almost zero emissions. Then, the simulation results are analyzed under different scenarios, including several policy implications. In order to meet a goal of zero emissions around 2050, the use of fossil fuels for power generation should be replaced with renewable energy sources, such as solar, wind and hydro. The results show that, regardless of the scenario of burden-sharing schemes using the global carbon budget, the Korean economy can bear the marginal cost of a GHG reduction, ranging between USD 100 and 350 in 2050, compared to the NDC extended scenario. It is evident that without a transformative change in the Korean economic structure and energy systems, the cost of reducing GHG emissions will be enormous.
Fast Multi-frame Stereo Scene Flow with Motion Segmentation
Creators: name: Taniai, Tatsunori
name: Sinha, Sudipta N.
name: Sato, Yoichi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We propose a new multi-frame method for efficiently computing scene flow (dense depth and optical flow) and camera ego-motion for a dynamic scene observed from a moving stereo camera rig. Our technique also segments out moving objects from the rigid scene. In our method, we first estimate the disparity map and the 6-DOF camera motion using stereo matching and visual odometry. We then identify regions inconsistent with the estimated camera motion and compute per-pixel optical flow only at these regions. This flow proposal is fused with the camera motion-based flow proposal using fusion moves to obtain the final optical flow and motion segmentation. This unified framework benefits all four tasks - stereo, optical flow, visual odometry and motion segmentation leading to overall higher accuracy and efficiency. Our method is currently ranked third on the KITTI 2015 scene flow benchmark. Furthermore, our CPU implementation runs in 2-3 seconds per frame which is 1-3 orders of magnitude faster than the top six methods. We also report a thorough evaluation on challenging Sintel sequences with fast camera and object motion, where our method consistently outperforms OSF [Menze and Geiger, 2015], which is currently ranked second on the KITTI benchmark.
description: 15 pages. To appear at IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2017). Our results were submitted to KITTI 2015 Stereo Scene Flow Benchmark in November 2016
Learning thermodynamically constrained equations of state with uncertainty
Creators: name: Sharma, Himanshu
name: Gaffney, Jim A.
name: Tsapetis, Dimitrios
name: Shields, Michael D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Numerical simulations of high energy-density experiments require equation of state (EOS) models that relate a material's thermodynamic state variables -- specifically pressure, volume/density, energy, and temperature. EOS models are typically constructed using a semi-empirical parametric methodology, which assumes a physics-informed functional form with many tunable parameters calibrated using experimental/simulation data. Since there are inherent uncertainties in the calibration data (parametric uncertainty) and the assumed functional EOS form (model uncertainty), it is essential to perform uncertainty quantification (UQ) to improve confidence in the EOS predictions. Model uncertainty is challenging for UQ studies since it requires exploring the space of all possible physically consistent functional forms. Thus, it is often neglected in favor of parametric uncertainty, which is easier to quantify without violating thermodynamic laws. This work presents a data-driven machine learning approach to constructing EOS models that naturally captures model uncertainty while satisfying the necessary thermodynamic consistency and stability constraints. We propose a novel framework based on physics-informed Gaussian process regression (GPR) that automatically captures total uncertainty in the EOS and can be jointly trained on both simulation and experimental data sources. A GPR model for the shock Hugoniot is derived and its uncertainties are quantified using the proposed framework. We apply the proposed model to learn the EOS for the diamond solid state of carbon, using both density functional theory data and experimental shock Hugoniot data to train the model and show that the prediction uncertainty reduces by considering the thermodynamic constraints.
description: 30 pages, 8 figures
DIFFUSE URBANISATION AND IRREGULAR URBAN GROWTH: PROCESSES AND TRENDS IN MEDIUM-SIZED CITIES IN THE CASTILLA Y LEÓN REGION (SPAIN)
Creators: name: López, Gonzalo Andrés
name: González González, María Jesús
Publisher: name: Finisterra
Year: 2019

description: The process of extension and growth of medium-sized cities towards their surrounding municipalities in recent years has not occurred in a linear or fully defined manner. Instead, in most of these intermediate nuclei, urban growth has been diffuse and irregular, generating processes of discontinuous extension. By virtue of the types of uses implemented in recent urbanization, different spatial impacts have occurred and, moreover, each dynamic has been affected in a specific way by the economic crisis, which has slowed down and / or paralyzed many of these developments initiated in the final years of the 20th century. This paper reflects on how these urbanization processes have taken place in medium-sized cities in the region of Castile and León, proposes an analysis of recent trends which, since 2000, have configured complex and diverse urban areas around the central nuclei of these cities.
description: Finisterra, vol. 54 n.º 112 (2019)
Can differences in the nickel abundance in Chandrasekhar mass models explain the relation between brightness and decline rate of normal Type Ia Supernovae?
Creators: name: Mazzali, Paolo A.
name: Nomoto, Ken'ichi
name: Cappellaro, Enrico
name: Nakamura, Takayoshi
name: Umeda, Hideyuki
name: Iwamoto, Koichi
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The use of Type Ia supernovae as distance indicators relies on the determination of their brightness. This is not constant, but it can be calibrated using an observed relation between the brightness and the properties of the optical light curve (decline rate, width, shape), which indicates that brighter SNe have broader, slower light curves. However, the physical basis for this relation is not yet fully understood. Among possible causes are different masses of the progenitor white dwarfs or different opacities in Chandrasekhar-mass explosions. We parametrise the Chandrasekhar-mass models presented by Iwamoto et al (1999), which synthesize different amounts of Ni, and compute bolometric light curves and spectra at various epochs. Since opacity in SNe Ia is due mostly to spectral lines, it should depend on the mass of Fe-peak elements synthesized in the explosion, and on the temperature in the ejecta. Bolometric light curves computed using these prescriptions for the optical opacity reproduce the relation between brightness and decline rate. Furthermore, when spectra are calculated, the change in colour between maximum and two weeks later allows the observed relation between M_B(Max) and Dm_{15}(B) to be reproduced quite nicely. Spectra computed at various epochs compare well with corresponding spectra of spectroscopically normal SNeIa selected to cover a similar range of Dm_{15}(B) values.
description: 25 pages, including 6 figures. Accepted for publication in ApJ