cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Photoionization-assisted, high-efficiency emission of dispersive wave in gas-filled hollow-core photonic crystal fibers
Creators: name: Chen, Yifei
name: Huang, Zhiyuan
name: Yu, Fei
name: Wu, Dakun
name: Fu, Jianhua
name: Wang, Ding
name: Pang, Meng
name: Leng, Yuxin
name: Xu, Zhizhan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate that the phase-matched dispersive wave (DW) emission within the resonance band of a 25-cm-long gas-filled hollow-core photonic crystal fiber (HC-PCF) can be strongly enhanced by the photoionization effect of the pump pulse. In the experiments we observe that as the pulse energy increases, the pump pulse gradually shifts to shorter wavelengths due to soliton-plasma interactions. When the central wavelength of the blueshifting soliton is close to the resonance band of the HC-PCF, high-efficiency energy transfer from the pump light to the DW in the visible region can be obtained. During this DW emission process, we also observe that the spectral center of the DW gradually shifts to longer wavelengths leading to a slightly-increased DW bandwidth, which can be well explained as the consequence of phase-matched coupling between the pump pulse and the DW. In particular, at an input pulse energy of 6 uJ, the spectral ratio of the DW at the fiber output is measured to be as high as ~53% together with a conversion efficiency of ~19%. These experimental results, explained by numerical simulations, pave the way to high-brightness light sources based on high-efficiency frequency-upconversion processes in gas-filled HC-PCFs.
Non-Hermitian CT-Symmetric Spectral Protection of Nonlinear Defect Modes
Creators: name: Jeon, Do Hyeok
name: Reisner, Mattis
name: Mortessagne, Fabrice
name: Kottos, Tsampikos
name: Kuhl, Ulrich
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate, using a microwave platform consisting of a non-Hermitian Su-Schrieffer-Heeger array of coupled dielectric resonators, the interplay of a lossy nonlinearity and CT-symmetry in the formation of defect modes. The measurements agree with the theory which predicts that, up to moderate pumping, the defect mode is an eigenstate of the CT-symmetric operator and retains its frequency at the center of the gap. At higher pumping values, the system undergoes a self-induced explicit \CT-symmetry violation which removes the spectral topological protection and alters the shape of the defect mode.
description: 9 pages, 5 figures including supplement
Additional file 8 of Long-term survival and costs following extracorporeal membrane oxygenation in critically ill children—a population-based cohort study
Creators: name: Fernando, Shannon M.
name: Qureshi, Danial
name: Tanuseputro, Peter
name: Dhanani, Sonny
name: Guerguerian, Anne-Marie
name: Shemie, Sam D.
name: Talarico, Robert
name: Fan, Eddy
name: Laveena Munshi
name: Rochwerg, Bram
name: Scales, Damon C.
name: Brodie, Daniel
name: Kednapa Thavorn
name: Kwadwo Kyeremanteng
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 8 : Supplemental Table 8. Mean (standard deviation) 1-year costs following admission of pediatric patients requiring Extra Corporeal Membrane Oxygenation in Ontario, Canada (2009-2016). All values in Canadian dollars. Abbreviations: SD = standard deviation; OHIP = Ontario Health Insurance Plan.
Wide Field Photometry of the Galactic Globular Cluster M22
Creators: name: Monaco, L.
name: Pancino, E.
name: Ferraro, F. R.
name: Bellazzini, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present wide field photometry of the Galactic Globular Cluster M~22 in the B, V and I passbands for more than 186,000 stars. The study is complemented by the photometry in two narrowband filters centered on H$_α$ and the adjacent continuum, and by infrared J, H and K magnitudes derived from the 2 MASS survey for $\sim$2000 stars. Profiting from this huge database, we completely characterized the evolved stellar sequences of the cluster by determining a variety of photometric parameters, including new photometric estimates of the mean metallicity, reddening and distance to the cluster. In particular, from our multi-wavelength analysis, we re-examined the long-standing metallicity spread problem in M~22. According to our dataset, we conclude that most of the observed width of the red giant branch must be due to differential reddening, which amounts to a maximum of $ΔE(B-V)\simeq0.06$, although the presence of a small metallicity spread cannot be completely ruled out. More specifically, the maximum metallicity spread allowed by our data is of the order of $Δ$[Fe/H]$\simeq 0.1÷0.2$ dex, i.e., not much more than what allowed by the photometric errors. Finally, we identified most of the known variable stars and peculiar objects in our field of view. In particular, we find additional evidence supporting previous optical identifications of the central star of the Planetary Nebula IRAS 18333-2357, which is associated with M~22.
description: 15 pages, 16 figures, accepted for publication in MNRAS
Neutron star matter equation of state including $d^*$-hexaquark degrees of freedom
Creators: name: Mantziris, A.
name: Pastore, A.
name: Vidaña, I.
name: Watts, D. P.
name: Bashkanov, M.
name: Romero, A. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present an extension of a previous work where, assuming a simple free bosonic gas supplemented with a relativistic meand field model to describe the pure nucleonic part of the EoS, we studied the consequences that the first non-trivial hexaquark $d^*$(2380) could have on the properties of neutron stars. Compared to that exploratory work we employ a standard non-linear Walecka model including additional terms that describe the interaction of the $d^*(2380)$ di-baryon with the other particles of the system through the exchange of $σ$- and $ω$-meson fields. Our results have show that the presence of the $d^*(2380)$ leads to maximum masses compatible with the recent observations of $\sim 2$M$_\odot$ millisecond pulsars if the interaction of the $d^*(2380)$ is slightly repulsive or the $d^*(2380)$ does not interacts at all. An attractive interaction makes the equation of state too soft to be able to support a $2$M$_\odot$ neutron star whereas an extremely repulsive one induces the collapse of the neutron star into a black hole as soon as the $d^*(2380)$ appears.
Database on European Education on POI
Creators: name: University of Twente
name: PROCEDIN Project
name: F6S Network (United Kingdom)
name: PEDAL Consulting s.r.o
name: Gabrovo Municipality
Publisher: name: Zenodo
Year: 2023
Subjects: Public Procurement
Innovation
Education
Training
University
Study
Career
Database

description: PROCEDIN conducted a survey of universities across Europe to map procurement education, aiming to enhance the growth of procurement and attract future leaders. Data from 114 universities in 27 countries, offering 1679 courses, was compiled into a database. The visibility of procurement education is crucial for development and attracting future leaders. The database serves as a resource for practitioners to connect with educators and provides students and educators visibility on procurement courses in Europe. 

The database is available here: https://procedin.eu/database-of-european-education-provision/
Silicon sensors for the CMS HGCAL upgrade: Challenges, sensor design & electrical characterization
Creators: name: Brondolin, Erica
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The CMS detector will undergo significant improvements to face the 10-fold increase in integrated luminosity of LHC, the so-called High-Luminosity LHC, scheduled to start in 2027. This will include a completely new calorimeter in the CMS endcap regions, which should be able to withstand fluences of up to 10 16 n$_{eq}$ /cm$^2$ . The new High Granularity Calorimeter (HGCAL) will have unprecedented transverse and longitudinal readout and trigger segmentation that will facilitate the particle-flow approach to reconstruct electromagnetic and hadronic particle showers and their energies. In regions of low radiation, HGCAL will be equipped with small plastic scintillator tiles as active material coupled to on-tile silicon photomultipliers. In the higher radiation zone, silicon has been chosen due to its intrinsic radiation hardness. The silicon sensors will be of hexagonal shape, with three nominal thicknesses of 120 μm, 200 μm and 300 μm, optimized for regions of different radiation levels. They will be segmented into several hundred cells with hexagonal shape of 0.5 to 1.1 cm$^2$ in size, each of which is read out individually. A comprehensive campaign is in progress to converge on optimal sensor design choices and parameters, such as bulk doping, layouts and production methods. Results from full electrical sensor characterization are presented for different sensors, together with first results from an irradiation campaign of large-area silicon sensors.
7712: Thomas Edward Donaldson
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Thomas Edward Donaldson belonged to the 100th Machine Gun Company of the British Expeditionary Force. He was a Sergeant, later promoted to 2nd Lieutenant.He fought in Lesbœufs as part of the Battle of the Somme, and was awarded a military medal for his service.During conflict, he was gassed and also received shrapnel to the head that would result in dreadful fevers thereafter.
Additional file 5 of Fluctuation of bone turnover markers’ levels in samples of gingival crevicular fluid after orthodontic stimulus: a systematic review
Creators: name: Kakali, L.
name: Giantikidis, I.
name: Sifakakis, I.
name: Kalimeri, E.
name: Karamani, I.
name: Mavrogonatou, E.
name: Kloukos, D.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 5. List of excluded studies.
Magnetotunneling Between Two-dimensional Electron Gases in InAs-AlSb-GaSb Heterostructures
Creators: name: Lin, Y.
name: González, E. M.
name: Mendez, E. E.
name: Magno, R.
name: Bennett, B. R.
name: Bracker, A. S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have observed that the tunneling magnetoconductance between two-dimensional (2D) electron gases formed at nominally identical InAs-AlSb interfaces most often exhibits two sets of Shubnikov-de Haas oscillations with almost the same frequency. This result is explained quantitatively with a model of the conductance in which the 2D gases have different densities and can tunnel between Landau levels with different quantum indices. When the epitaxial growth conditions of the interfaces are optimized, the zero-bias magnetoconductance shows a single set of oscillations, thus proving that the asymmetry between the two electron gases can be eliminated.
description: RevTeX format including 4 figures; submit for publication
Inclusive Vub measurements at BaBar
Creators: name: Sarti, Alessio
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present two inclusive measurements of Cabibbo-Kobayashi-Maskawa (CKM) matrix element Vub: one uses the lepton energy spectrum (E_l) and the other uses the invariant mass of the hadronic system (m_X) to discriminate signal (B -> X_u lnu) and background (B -> X_c lnu) events in B -> Xlnu transitions. Both analyses are based on data samples collected by the BaBar detector at the PEP-II asymmetric-energy B Factory at SLAC.
description: Invited talk at the Workshop on the CKM Unitarity Triangle, IPPP Durham, April 2003 (eConf C0304052). 4 pages LaTeX, 3 eps figures
7729: Miss Gracie Proudfoot Fowler
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Gracie Proudfoot Fowler volunteered with the St. John's Voluntary Aid Detachments during World War One, providing nursing care for military personnel in Hull and other areas of East Yorkshire.
Spinning Disk -- Remote Focusing Microscopy
Creators: name: Gintoli, Michele
name: Mohanan, Sharika
name: Salter, Patrick
name: Williams, Elizabeth
name: Beard, James D.
name: Jekely, Gaspar
name: Corbett, Alexander D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Biological Physics (physics.bio-ph)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Fast confocal imaging was achieved by combining remote focusing with differential spinning disk optical sectioning to rapidly acquire images of live samples at cellular resolution. Axial and lateral full width half maxima less than 5 um and 490 nm respectively are demonstrated over 130 um axial range with a 256 x 128 um field of view. A water-index calibration slide was used to achieve an alignment that minimises image volume distortion. Application to live biological samples was demonstrated by acquiring image volumes over a 24 um axial range at 1 volume/s, allowing for the detection of calcium-based neuronal activity in Platynereis dumerilii larvae.
description: 16 pages, 9 figures, 18 references
Electric-field control of spin-orbit torques in perpendicularly magnetized W/CoFeB/MgO films
Creators: name: Filianina, Mariia
name: Hanke, Jan-Philipp
name: Lee, Kyujoon
name: Han, Dong-Soo
name: Jaiswal, Samridh
name: Jakob, Gerhard
name: Mokrousov, Yuriy
name: Kläui, Mathias
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Controlling magnetism by electric fields offers a highly attractive perspective for designing future generations of energy-efficient information technologies. Here, we demonstrate that the magnitude of current-induced spin-orbit torques in thin perpendicularly magnetized CoFeB films can be tuned and even increased by electric field generated piezoelectric strain. Using theoretical calculations, we uncover that the subtle interplay of spin-orbit coupling, crystal symmetry, and orbital polarization is at the core of the observed strain dependence of spin-orbit torques. Our results open a path to integrating two energy efficient spin manipulation approaches, the electric field-induced strain and the current-induced magnetization switching, thereby enabling novel device concepts.
Statistical Supplement to Household Food Security in the United States in 2021
Creators: name: Coleman-Jensen, Alisha
name: Rabbitt, Matthew P.
name: Gregory, Christian A.
name: Singh, Anita
name: Coleman-Jensen, Alisha
name: Rabbitt, Matthew P.
name: Gregory, Christian A.
name: Singh, Anita
Publisher: name: Unknown
Year: 2022
Subjects: subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Health Economics and Policy
subject: Research Methods/ Statistical Methods
subject: Food security,
subject: food insecurity
subject: food spending
subject: food pantry
subject: soup kitchen
subject: emergency kitchen, material well-being, SNAP, Supplemental Nutrition Assistance Program, National School Lunch Program, WIC, Special Supplemental Nutrition Program for Women, Infants, and Children, COVID-19, coronavirus pandemic

description: This supplement provides statistics that complement those in Household Food Security in the United States in 2021. That research report provides the primary national statistics on household food security, food spending, and use of Federal food and nutrition assistance programs by food-insecure households. Additional statistics here cover component items of the household food security measure, the frequency of occurrence of food-insecure conditions, and selected statistics on household food security, food spending, and use of Federal and community food and nutrition assistance programs.
B -> X_s gamma gamma and B_s -> gamma gamma in supersymmetry with broken R-parity
Creators: name: Gemintern, Alexander
name: Bar-Shalom, Shaouly
name: Eilam, Gad
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the effects of R-parity violating (RPV) supersymmetry on the two-photon B decays B -> X_s gamma gamma and B_s -> gamma gamma. We find that, although there are many one-loop RPV diagrams that can contribute to these two-photon B decays, the RPV effect is dominated by a single diagram. This diagram, named here lambda-irreducible, has a distinct topology which is irrelevant for the b -> s gamma amplitude at one-loop and has thus a negligible effect on the one-photon decay B -> X_s gamma. We show that the lambda-irreducible RPV diagram can give BR(B_s -> gamma gamma) ~ 5*10^(-6) and BR(B -> X_s gamma gamma) ~ 6*10^(-7), which is about 16 and 5 times larger than the SM values, respectively. Although the enhancement to the decay width of B -> X_s gamma gamma is not that dramatic, we find that the energy distribution of the two photons is appreciably different from the SM, due to new threshold effects caused by the distinct topology of the RPV lambda-irreducible diagram. Moreover, this diagram significantly changes the forward-backward asymmetry with respect to the softer photon in B -> X_s gamma gamma. Thus, the RPV effect in B -> X_s gamma gamma can be discerned using these observables.
description: 12 pages, 6 figures
S-P wave interference in the K+K- photoproduction on hydrogen
Creators: name: Bibrzycki, L.
name: Lesniak, L.
name: Szczepaniak, A. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have studied the partial wave interference effects to obtain a new information about the contribution of the S-wave to the cross section of the K+K- photoproduction on hydrogen. The K+K- photoproduction channel for the effective masses around 1 GeV is dominated by the phi(1020) resonance with only a small fraction of events coming from decays of scalar resonances f0(980) and a0(980). However, a careful analysis of angular distributions of the outgoing kaons shows that the S-wave adds an asymmetry to the angular distribution of kaons. A fairly precise estimation of the K+K- photoproduction cross section in the S-wave has been obtained.
description: 9 pages, 8 eps figures, needs appolb.cls, talk given by L. Bibrzycki at Cracow School of Theoretical Physics, XLV Course, Zakopane, June 7, 2005; to be published in Acta Physica Polonica B
Magnetic properties of Co/Ni-based multilayers with Pd and Pt insertion layers
Creators: name: Heigl, Michael
name: Wendler, Ralph
name: Haugg, Simon
name: Albrecht, Manfred
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this study, the influence of Pd and Pt insertion layers in Co/Ni multilayers (MLs) on their magnetic properties, e.g. magnetic anisotropies, saturation magnetization, coercivity, magnetic domain size, and Curie temperature, is investigated. We compare three series of [Co/Ni/X]N ML systems (X = Pd, Pt, no insertion layer), varying the individual Co layer thickness as well as the repetition number N. All three systems behave very similarly for the different Co layer thicknesses. For all systems, a maximum effective magnetic anisotropy was achieved for MLs with a Co layer thickness between 0.15 nm and 0.25 nm. The transition from an out-of-plane to an in-plane system occurs at about 0.4 nm of Co. While [Co(0.2 nm)/Ni(0.4 nm)]N MLs change their preferred easy magnetization axis from out-of-plane to in-plane after 6 bilayer repetitions, insertion of Pd and Pt results in an extension of this transition beyond 15 repetitions. The maximum effective magnetic anisotropy was more than doubled from 105 kJ/m3 for [Co/Ni]3 to 275 and 186 kJ/m3 for Pt and Pd, respectively. Furthermore, the insertion layers strongly reduce the initial saturation magnetization of 1100 kA/m of Co/Ni MLs and lower the Curie temperature from 720 to around 500 K
Additional file 2 of Genome-wide identification and expression analysis of the NAC transcription factor family in tomato (Solanum lycopersicum) during aluminum stress
Creators: name: Jin, Jian Feng
name: Wang, Zhan Qi
name: He, Qi Yu
name: Wang, Jia Yi
name: Li, Peng Fei
name: Xu, Ji Ming
name: Zheng, Shao Jian
name: Fan, Wei
name: Yang, Jian Li
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Figure S1: Effects of Al treatment on root growth of tomato seedlings. Figure S2. Volcano plot analysis of differentially expressed genes (DEGs) in roots of tomato seedlings under Al for 6 h. Figure S3. Effects of a protein translation inhibitor, cycloheximide (CHX), on the expression of SlNAC056 gene identified in our RNA-Seq data. Figure S4. Effects of a protein translation inhibitor, cycloheximide (CHX), on the expression of FRD3-like genes identified in our RNA-Seq data.
Ecological Resilience in the Sustainability of Economic Development
Creators: name: Perrings, Charles
name: Perrings, Charles
Publisher: name: Unknown
Year: 1994
Subjects: Environmental Economics and Policy

description: Recent work on the ecology and economics of biodiversity loss has indicated that the main ecpnpmic _costs _of species deletion to.the present generation are likely to be found ituhe lo,ss_pf resilience pf ecosystems providing basic life support services. This paper considers how ecological resilience relates to the sustainability of economic development. It is argued that maintenance of ecosystem stability is necessary to satisfy the basic criterion of sustainable economic development - that the value of the capital stock should be non-declining. Since ecological resilience is a measure of ecosystem stability, loss of resilience implies reduced ecosystem stability. Loss of resilience does not necessarily mean that economic development will be unsustainable, but itincreases_the.probability_that this mill be so. It also,increases.the burden on environmental management.
Weak effects in proton beam asymmetries at polarised RHIC and beyond
Creators: name: Moretti, S.
name: Nolten, M. R.
name: Ross, D. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We report on a calculation of the full one-loop weak corrections through the order $α_{\mathrm{S}}^2α_{\mathrm{W}}$ to parton-parton scattering in all possible channels at the Relativistic Heavy Ion Collider (RHIC) running with polarised $pp$ beams (RHIC-Spin). This study extends the analysis previously carried out for the case of $2\to2$ subprocesses with two external gluons, by including all possible four-quark modes with and without an external gluon. The additional contributions due to the new four-quarks processes are extremely large, of order 50 to 100% (of either sign), not only in the case of parity-violating beam asymmetries but also for the parity-conserving ones and (although to a more limited extent) the total cross section. Such ${\cal O}(α_{\mathrm{S}}^2α_{\mathrm{W}})$ effects on the CP-violating observables would be an astounding 5 times larger for the case of the LHC with polarised beams -- which has been discussed as one of the possible upgrades of the CERN machine -- whereas they would be much reduced for the case of the CP-conserving ones as well as the cross section.
description: 12 pages, 4 figures, 2 tables, minor modifications, version to appear in PLB
Noncommutative Moduli for Multi-Instantons
Creators: name: Ivanova, Tatiana A.
name: Lechtenfeld, Olaf
name: Mueller-Ebhardt, Helge
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: There exists a recursive algorithm for constructing BPST-type multi-instantons on commutative R^4. When deformed noncommutatively, however, it becomes difficult to write down non-singular instanton configurations with topological charge greater than one in explicit form. We circumvent this difficulty by allowing for the translational instanton moduli to become noncommutative as well. This makes possible the ADHM construction of 't Hooft multi-instanton solutions with everywhere self-dual field strengths on noncommutative R^4.
description: 1+9 pages; v2: reference added, published version
Constrained Hamiltonian approach to the Maxwell theory
Creators: name: Kulyabov, Dmitry S.
name: Korolkova, Anna V.
name: Gevorkyan, Migran N.
name: Sevastianov, Leonid A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The most common physical formalisms are the Lagrangian formalism and the Hamiltonian formalism. From the superficial point of view, they are one and the same, but rewritten in other terms. However, it seems that the Hamiltonian formalism has a richer structure and is more convenient for studying the electromagnetic field, especially in the formalization of its geometrization. Unfortunately for field problems, there is a whole set of Hamiltonian formalisms. The authors study the applicability of different variants of the Hamiltonian formalism to the problems of electrodynamics. In this paper we consider the Hamiltonian formalism with constraints.
description: in English; in Russian
Perturbative Formulation and Non-adiabatic Corrections in Adiabatic Quantum Computing Schemes
Creators: name: Shi, Yu
name: Wu, Yong-Shi
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Adiabatic limit is the presumption of the adiabatic geometric quantum computation and of the adiabatic quantum algorithm. But in reality, the variation speed of the Hamiltonian is finite. Here we develop a general formulation of adiabatic quantum computing, which accurately describes the evolution of the quantum state in a perturbative way, in which the adiabatic limit is the zeroth-order approximation. As an application of this formulation, non-adiabatic correction or error is estimated for several physical implementations of the adiabatic geometric gates. A quantum computing process consisting of many adiabatic gate operations is considered, for which the total non-adiabatic error is found to be about the sum of those of all the gates. This is a useful constraint on the computational power. The formalism is also briefly applied to the adiabatic quantum algorithm.
description: 5 pages, revtex. some references added
7686: The Memoir of Corporal Donald M. Stewart
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Corporal Donald M. Stewart served with the 1st Battalion of the Scots Guards for three years, and recorded his time at war in this published booklet: With The "Old Contemptibles" In 1914 Against Germany's Formidable War Machine.
Additional file 6 of Long-term survival and costs following extracorporeal membrane oxygenation in critically ill children—a population-based cohort study
Creators: name: Fernando, Shannon M.
name: Qureshi, Danial
name: Tanuseputro, Peter
name: Dhanani, Sonny
name: Guerguerian, Anne-Marie
name: Shemie, Sam D.
name: Talarico, Robert
name: Fan, Eddy
name: Laveena Munshi
name: Rochwerg, Bram
name: Scales, Damon C.
name: Brodie, Daniel
name: Kednapa Thavorn
name: Kwadwo Kyeremanteng
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 6: Supplemental Table 6. Comparison of patients with cardiac failure receiving Extra Corporeal Membrane Oxygenation who survive to hospital discharge against those who died in-hospital (n = 169). *≤ 5 patients. aRange provided due to small cell sizes. Abbreviations: SD = standard deviation; ECMO = Extracorporeal Membrane Oxygenation; IQR = interquartile range.
Creating sustainable food procurement targets for the AMS Lighter Footprint Strategy
Creators: name: Edwards, Catharine
name: Chen, Neil
name: Au-Yeung, Teresa
name: Wood, Roger
name: Lee, Vicki
name: Kao, Ellen
Publisher: name: The University of British Columbia
Year: 2014

description: Community based action research was conducted to determine strategies for the Alma Mater Society (AMS) Food Service Department to procure their food in a more sustainable manner, in order to reduce their ecological footprint. Interviews were conducted with relevant stakeholders, including the AMS Food and Beverage Department (AMSFBD) Manager, and representatives from their main produce supplier, Central Foods. Literature searches were conducted on sustainability initiatives by other universities, UBC policies were obtained, and food procurement lists were obtained from the AMS. Surveys were also conducted on students to determine their awareness of sustainability initiatives, and their food consumption patterns at the Student Union Building. The focus was narrowed down to the procurement of seasonal local produce during the winter months from November to March, with a specific focus on cucumbers, carrots, broccoli, tomatoes, mushrooms, peppers, onions, and potatoes, which are common items used by AMSFBD outlets. The results showed that of these items, the only BC grown ones used by AMSFBD outlets in the winter are red small potatoes, and mushrooms; however, Central Foods is willing to source any items that the AMS requests. Our results also indicate that although student awareness of AMS sustainability initiatives is low, they would support a one-time price increase of between $0.25 and $0.50 to account for future sustainability initiatives. It is our recommendation that the AMS increase their communication with their suppliers, increase marketing initiatives to build student awareness, and conduct formal marketing research that can be statistically analyzed to assess a price increase that will be accepted by UBC students. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
On Schizophrenic Patterns in b-ary Expansions of Some Irrational Numbers
Creators: name: Tóth, László
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 11A63, Secondary 11B37

description: In this paper we study the $b$-ary expansions of the square roots of the function defined by the recurrence $f_b(n)=b f_b(n-1)+n$ with initial value $f(0)=0$ taken at odd positive integers $n$, of which the special case $b=10$ is often referred to as the "schizophrenic" or "mock-rational" numbers. Defined by Darling in $2004$ and studied in more detail by Brown in $2009$, these irrational numbers have the peculiarity of containing long strings of repeating digits within their decimal expansion. The main contribution of this paper is the extension of schizophrenic numbers to all integer bases $b\geq2$ by formally defining the schizophrenic pattern present in the $b$-ary expansion of these numbers and the study of the lengths of the non-repeating and repeating digit sequences that appear within.
Bubbles and Superbubbles
Creators: name: Chu, Y. -H.
name: Guerrero, M. A.
name: Gruendl, R. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An isolated massive star can blow a bubble, while a group of massive stars can blow superbubbles. In this paper, we examine three intriguing questions regarding bubbles and superbubbles: (1) why don't we see interstellar bubbles around every O star? (2) how hot are the bubble interiors? and (3) what is going on at the hot/cold gas interface in a bubble?
description: 8 page, 5 figures, to appear in the proceedings of "How does the Galaxy work? A Galactic Tertulia with Don Cox and Ron Reynolds", eds Alfaro, Perez & Franco
The Rumour Mill: Making the Spread of Misinformation Explicit and Tangible
Creators: name: Inie, Nanna
name: Olesen, Jeanette Falk
name: Derczynski, Leon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Misinformation spread presents a technological and social threat to society. With the advance of AI-based language models, automatically generated texts have become difficult to identify and easy to create at scale. We present "The Rumour Mill", a playful art piece, designed as a commentary on the spread of rumours and automatically-generated misinformation. The mill is a tabletop interactive machine, which invites a user to experience the process of creating believable text by interacting with different tangible controls on the mill. The user manipulates visible parameters to adjust the genre and type of an automatically generated text rumour. The Rumour Mill is a physical demonstration of the state of current technology and its ability to generate and manipulate natural language text, and of the act of starting and spreading rumours.
description: Accepted to CHI 2020 Interactivity
Outstanding Challenges of Exoplanet Atmospheric Retrievals
Creators: name: Barstow, Joanna K.
name: Heng, Kevin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Spectral retrieval has long been a powerful tool for interpreting planetary remote sensing observations. Flexible, parameterised, agnostic models are coupled with inversion algorithms in order to infer atmospheric properties directly from observations, with minimal reliance on physical assumptions. This approach, originally developed for application to Earth satellite data and subsequently observations of other Solar System planets, has been recently and successfully applied to transit, eclipse and phase curve spectra of transiting exoplanets. In this review, we present the current state-of-the-art in terms of our ability to accurately retrieve information about atmospheric chemistry, temperature, clouds and spatial variability; we discuss the limitations of this, both in the available data and modelling strategies used; and we recommend approaches for future improvement.
description: 30 pages, 6 figures. Accepted by Space Science Reviews
Exponential growth of Lie algebras of finite global dimension
Creators: name: Félix, Yves
name: Halperin, Steve
name: Thomas, Jean-Claude
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55P35 55P62 17B70

description: Let $X$ be a finite simply connected CW complex of dimension $n$. The loop space homology $H\_*(ΩX;\mathbb Q)$ is the universal enveloping algebra of a graded Lie algebra $L\_X$ isomorphic with $ pi\_{*-1} (X)\otimes \mathbb Q$. Let $Q\_X \subset L\_X$ be a minimal generating subspace, and set $α= \limsup\_i \frac{\log{\scriptsize rk} π\_i(X)}{i}$. Theorem: If ${dim} L\_X = \infty$ and $\limsup ({dim} (Q\_X)\_k)^{1/k} < \limsup ({dim} (L\_X)\_k)^{1/k}$ then $$\sum\_{i=1}^{n-1} {rk} π\_{k+i}(X) = e^{(α+ ε\_k)k} \hspace{1cm} {where} ε\_k \to 0 {as} k\to \infty.$$ In particular $\displaystyle\sum\_{i=1}^{n-1} {rk} π\_{k+i}(X)$ grows exponentially in $k$.
description: 16 pages
7706: The Medals of Andrew Finlay Readdie
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Andrew Finlay Readdie served in the Armed Forces during World War One.
Breakdown of a Mott insulator -- non-adiabatic tunneling mechanism
Creators: name: Oka, Takashi
name: Arita, Ryotaro
name: Aoki, Hideo
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Time-dependent nonequilibrium properties of a strongly correlated electron system driven by large electric fields is obtained by means of solving the time-dependent Schrödinger equation for the many-body wave function numerically in one dimension. While the insulator-to-metal transition depends on the electric field and the interaction, the metallization is found to be described in terms of a universal Landau-Zener quantum tunneling among the many-body levels. These processes induces current oscillation for small systems, while give rise to finite resistivity through dissipation for larger systems/on longer time scales.
description: 5 pages, 5 figures, version to appear in Phys.Rev.Lett
Some thermodynamic aspects of self-assembly of arrays of quantum dots
Creators: name: Prieto, J. E.
name: Markov, I.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied the relative adhesion (the wetting) of dislocation-free three-dimensional islands belonging to an array of islands to the wetting layer in Stranski-Krastanov growth mode. The array has been simulated as a chain of islands in 1+1 dimensions placed on top of a wetting layer. In addition to the critical size of the two-dimensional islands for the 2D-3D transformation to occur, we find that the wetting depends strongly on the density of the array, the size distribution and the shape of the islands.
description: 14 pages, 8 figures, presented at NATO Advanced Research Workshop on "Quantum dots: Fundamentals, Applications, Frontiers", Crete, Greece 20-24 June 2003
Effective Lagrangians for QCD: Deconfinement and Chiral Symmetry Restoration
Creators: name: Mocsy, Agnes
name: Sannino, Francesco
name: Tuominen, Kimmo
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Effective Lagrangians for Quantum Chromodynamics (QCD) especially suited for understanding deconfinement and chiral symmetry restoration at nonzero temperature and matter density are reviewed. These effective theories allow one to study generic properties of phase transitions using non-order parameter fields without loosing the information encoded in the true order parameter. {}For the pure gauge theory we demonstrate that, near the deconfining phase transition, the center group symmetry is naturally linked to the conformal anomaly. Another relevant outcome is that when the theory contains also quarks we can explain the intertwining of chiral symmetry restoration and deconfinement for QCD with matter fields either in the fundamental or in the adjoint representation of the gauge group. As a test of our general approach we show our results to be applicable also at non zero baryon chemical potential. We also predict new testable substructures to be present in the phase diagram of quarks in the adjoint representation of the gauge group. Here we provide some new insights on the large $N$ limit of gauge theories by investigating the hadronic world. We propose that the world of infinite $N$ should already be well described when N=6 for QCD with two and three light flavors. Finally, we suggest possible future applications of our results for heavy ions collisions.
description: Invited review talk for the KIAS-APCTP International Symposium in Astro-Hadron Physics Compact Stars: Quest For New States of Dense Matter November 10 - 14, 2003
Exact Mapping Between a Laser Network Loss Rate and the Classical XY Hamiltonian by Laser Loss Control
Creators: name: Gershenzon, Igor
name: Arwas, Geva
name: Gadasi, Sagie
name: Tradonsky, Chene
name: Friesem, Asher
name: Raz, Oren
name: Davidson, Nir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Recently, there has been growing interest in the utilisation of physical systems as heuristic optimisers for classical spin Hamiltonians. A prominent approach employs gain-dissipative optical oscillator networks for this purpose. Unfortunately, these systems inherently suffer from an inexact mapping between the oscillator network loss rate and the spin Hamiltonian due to additional degrees of freedom present in the system such as oscillation amplitude. In this work, we theoretically analyse and experimentally demonstrate a scheme for the alleviation of this difficulty. The scheme involves control over the laser oscillator amplitude through modification of individual laser oscillator loss. We demonstrate this approach in a laser network classical XY model simulator based on a digital degenerate cavity laser. We prove that for each XY model energy minimum there corresponds a unique set of laser loss values that leads to a network state with identical oscillation amplitudes and to phase values that coincide with the XY model minimum. We experimentally demonstrate an 8 fold improvement in the deviation from the minimal XY energy by employing our proposed solution scheme.
Additional file 5 of Long-term survival and costs following extracorporeal membrane oxygenation in critically ill children—a population-based cohort study
Creators: name: Fernando, Shannon M.
name: Qureshi, Danial
name: Tanuseputro, Peter
name: Dhanani, Sonny
name: Guerguerian, Anne-Marie
name: Shemie, Sam D.
name: Talarico, Robert
name: Fan, Eddy
name: Laveena Munshi
name: Rochwerg, Bram
name: Scales, Damon C.
name: Brodie, Daniel
name: Kednapa Thavorn
name: Kwadwo Kyeremanteng
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 5 : Supplemental Table 5. Comparison of neonatal patients receiving Extra Corporeal Membrane Oxygenation who survive to hospital discharge against those who died in-hospital (n = 342). *≤ 5 patients. aRange provided due to small cell sizes. Abbreviations: SD = standard deviation; ECMO = Extracorporeal Membrane Oxygenation; IQR = interquartile range.
Developing a sustainable food outlet for UBC Food Services in the new Beaty Biodiversity Centre
Creators: name: Blacklock, Sheila
name: Cho, Janine
name: Kung, Karen
name: Nakayama, Satoko
name: Vandenbosch, Kaitlin
name: Sulistyoningrum, Dian
Publisher: name: The University of British Columbia
Year: 2014

description: Adhering to UBC’s focus on sustainability, UBC Food Services is developing a model sustainable food outlet in the Beaty Biodiversity Centre, expected to open in 2009-2010. Our task was to develop a business proposal for the new Beaty Café, while accommodating space and equipment limitations. Relevant information was gathered from website and literature reviews as well as through community consultations, focus groups and interviews with external sustainable food outlets and suppliers. Based on our findings, we developed a sample menu that focuses on local, seasonal and organic ingredients and follows Canada’s Food Guide recommendations. We have developed a series of promotional and educational tools including posters, brochures, a community bulletin board, grand opening events and stamp cards to promote the Beaty Café and educate consumers on its sustainable initiatives. We would like to encourage consumers to bring their own container, but will offer sustainable serving ware options. Our business proposal includes sustainable lighting and interior finishings. In addition, we have developed recommendations for the AGSC 450 teaching team, future AGSC 450 students, and UBC Food Services. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Spin effects in diffractive $ Q \bar Q$ production at BNL eRHIC
Creators: name: Goloskokov, S. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss quark-antiquark leptoproduction within a QCD two-gluon exchange model at small $x$. The double spin asymmetries for longitudinally polarized leptons and transversely polarized protons in diffractive $Q \bar Q$ production are analysed at eRHIC energies. The predicted $A_{lT}$ asymmetry is large and can be used to obtain information on the polarized generalized gluon distributions in the proton.
description: Some modifications of the text and graphs were done. Title is modified slightly. To be published in Phys. Rev. D
7652: Willie's Letter
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Written to Maggie from Willie, this letter includes a detailed account of the writer's time on the SS Netherlee (1907-1917) that was torpedoed, and his subsequent survival.

The letter was found among the family possessions of a donator, unaware of any connection to the persons involved.