cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Preconditioned ADMM with nonlinear operator constraint
Creators: name: Benning, Martin
name: Knoll, Florian
name: Schonlieb, Carola-Bibiane
name: Valkonen, Tuomo
Publisher: name: Apollo - University of Cambridge Repository
Year: 2016
Subjects: ADMM
primal-dual
nonlinear inverse problems
parallel MRI
proximal point method
operator splitting
iterative Bregman method

description: This is the author accepted manuscript. The final version is available from Springer via https://doi.org/10.1007/978-3-319-55795-3_10.
description: We are presenting a modification of the well-known Alternating Direction Method of Multipliers (ADMM) algorithm with additional preconditioning that aims at solving convex optimisation problems with nonlinear operator constraints. Connections to the recently developed Nonlinear Primal-Dual Hybrid Gradient Method (NL-PDHGM) are presented, and the algorithm is demonstrated to handle the nonlinear inverse problem of parallel Magnetic Resonance Imaging (MRI).
description: MB, CS and TV acknowledge EPSRC grant EP/M00483X/1. FK ackowledges National Institutes of Health grant NIH P41 EB017183.
From quantum hydrodynamics to Koopman wavefunctions I
Creators: name: Gay-Balmaz, François
name: Tronci, Cesare
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: Classical Physics (physics.class-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Based on Koopman's theory of classical wavefunctions in phase space, we present the Koopman-van Hove (KvH) formulation of classical mechanics as well as some of its properties. In particular, we show how the associated classical Liouville density arises as a momentum map associated to the unitary action of strict contact transformations on classical wavefunctions. Upon applying the Madelung transform from quantum hydrodynamics in the new context, we show how the Koopman wavefunction picture is insufficient to reproduce arbitrary classical distributions. However, this problem is entirely overcome by resorting to von Neumann operators. Indeed, we show that the latter also allow for singular $δ-$like profiles of the Liouville density, thereby reproducing point particles in phase space.
description: 8 pages, no figures. To appear in Lecture Notes in Comput. Sci
Relations of the spaces Ap (Ω) and C p (∂Ω)
Creators: name: Georgakopoulos, N
name: Mastrantonis, V
name: Nestoridis, V
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: Riemann map
Poisson Kernel
Jordan curve
Smoothness on the boundary

description: This is the author accepted manuscript. It is currently under an indefinite embargo pending publication by Springer.
description: Let Ω be a Jordan domain in C, J an open arc of ∂Ω and φ : D → Ω a Riemann map from the open unit disk D onto Ω. Under certain assumptions on φ we prove that if a holomorphic function f ∈ H(Ω) extends continuously on Ω ∪ J and p ∈ {1, 2, . . . } ∪ {∞}, then the following equivalence holds: the derivatives f (l) , 1 ≤ l ≤ p, l ∈ N, extend continuously on Ω ∪ J if and only if the function f|J has continuous derivatives on J with respect to the position of orders l, 1 ≤ l ≤ p, l ∈ N. Moreover, we show that for the relevant function spaces, the topology induced by the l−derivatives on Ω, 0 ≤ l ≤ p, l ∈ N, coincides with the topology induced by the same derivatives taken with respect to the position on J.
Emergence of Particle-Hole Symmetry near Optimal Doping in High-Temperature Copper Oxide Superconductors
Creators: name: Chakraborty, Shiladitya
name: Galanakis, Dimitrios
name: Phillips, Philip
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: High-temperature copper oxide superconductors (cuprates) display unconventional physics when they are lightly doped whereas the standard theory of metals prevails in the opposite regime. For example, the thermoelectric power, that is the voltage that develops across a sample in response to a temperature gradient, changes sign abruptly near optimal doping in a wide class of cuprates, a stark departure from the standard theory of metals in which the thermopower vanishes only when one electron exists per site. We show that this effect arises from proximity to a state in which particle-hole symmetry is dynamically generated. The operative mechanism is dynamical spectral weight transfer from states that lie at least 2eV away from the chemical potential. We show that the sign change is reproduced quantitatively within the Hubbard model for moderate values of the on-site repulsion, $U$. For sufficiently large values of on-site repulsion, for example, $U=20t$, ($t$ the hopping matrix element), dynamical spectral weight transfer attenuates and our calculated results for the thermopower are in prefect agreement with exact atomic limit. The emergent particle-hole symmetry close to optimal doping points to pairing in the cuprates being driven by high-energy electronic states.
description: 7 pages: Published version
Servicio de Entrega: Tendencia de Hábitos y Consumo de Comida Mediante el uso de Aplicaciones Móviles
Creators: name: Guzmán, Helen Javier Chávez
Publisher: name: figshare
Year: 2021
Subjects: subject: 150503 Marketing Management (incl. Strategy and Customer Relations)
subject: FOS: Economics and business
subject: 150506 Marketing Theory

description: El uso de aplicaciones móviles para pedir comida se ha convertido en algo natural para el consumidor que vive en la contingencia provocada por el COVID-19. Sin embargo, no se ha convertido en un hábito, ni ha generado dependencia ni adicción para este fin. Este artículo utiliza un enfoque cuantitativo, de alcance descriptivo, y sigue una simple transversal. Como técnica de recolección se utilizó la encuesta electrónica en internet y se aplicó a 75 habitantes de la ciudad de Puebla que utilizan aplicaciones móviles para la entrega de alimentos, la cual está conformada por 27 ítems. El perfil del consumidor de alimentos, sus hábitos y actitudes hacia el servicio, fue analizado a través de aplicaciones móviles con el fin de generar estrategias de marketing a través de la segmentación. Los resultados muestran que factores como el ahorro de tiempo, dinero, y la mayoría de la gente valora la rapidez con la que se entregan los alimentos. También hay un segmento de mercado claro que tiene características que lo distinguen en términos de perfil y gasto. El uso promedio es de una sola aplicación, es decir, Uber Eats, la que tiene más demanda. La gente compra comida con más frecuencia por la noche, con un gasto de menos de $ 500 al mes debido a la entrega a domicilio.
title: Horse Mackerel Otolith Exchange In 1996
Creators: name: Eltink, A.
Publisher: name: ASC 1997 - HH
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.Three sets of otoliths were circulated among 7 readers fram 6 countries during the 1996horse mackerelotolith exchange. Set A contained otoliths of 'known' or 'actual' age, whichwere only otoliths of the extremely strang 1982 year dass collected during the period 1985 1995and of which the original ageings had a very high prabability to agree with the trueage. Set Bcontained otoliths of fish caught during the first half of the year (only translucentedges) and set C contained otoliths of fish caught during the second half of the year(mixture of translucent and opaque edges). Set A has been used to validate the age readingmethod of each otolith reader. Based on this validation the age readings of set Band C ofeach otolith reader have been evaluated. Difficulties in the interpretation of the edge of theotolith were analysed by comparing ageing results of set Band C. The age readings of thethree sets were analysed for the age range 0-15, in addition set Bwas analysed over the agerange 10-25 in order to get information on the rel~~ive bias in the ageings of especially theolder fish. The accuracy and the precision of the age readings as weil as the bias in theageings are discussed by otolith set. Precision by reader differed quite much and appears tobe related to experience in otolith reading. Validation set A showed, that all readers had abias in the age readings. The absolute bias in ageing was estimated for each age graup andfor each otolith reader from the age readings of validation set A. In general the bias startedat age 6 and increased to one year of underestimation at age 13. Dnly one otolith readeroverestimated the ages in the validation set (especially age 7-9).
Eight new T4.5-T7.5 dwarfs discovered in the UKIDSS Large Area Survey Data Release 1
Creators: name: Lodieu, N.
name: Pinfield, D. J.
name: Leggett, S. K.
name: Jameson, R. F.
name: Mortlock, D. J.
name: Warren, S. J.
name: co-authors, 31
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present eight new T4.5-T7.5 dwarfs identified in the UKIRT Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS) Data Release 1 (DR1). In addition we have recovered the T4.5 dwarf SDSS J020742.91+000056.2 and the T8.5 dwarf ULAS J003402.77-005206.7. Photometric candidates were picked up in two-colour diagrams over 190 square degrees (DR1) and selected in at least two filters. All candidates exhibit near-infrared spectra with strong methane and water absorption bands characteristic of T dwarfs and the derived spectral types follow the unified scheme of Burgasser et al. (2006). We have found 6 new T4.5-T5.5 dwarfs, one T7 dwarf, one T7.5 dwarf, and recovered a T4.5 dwarf and a T8.5 dwarf. We provide distance estimates which lie in the 15-85 pc range; the T7.5 and T8.5 dwarfs are probably within 25 pc of the Sun. We conclude with a discussion of the number of T dwarfs expected after completion of the LAS, comparing these initial results to theoretical simulations.
description: 10 pages, 4 figures, 3 tables, 1 appendix, accepted for publication in MNRAS, Figure 2 is a low-resolution version
title: Chemokines cooperate with TNF to provide protective anti-viral immunity and to enhance inflammation
title: Poxviral CrmD is an essential virulence factor
titleType: AlternativeTitle
Creators: name: Alejo, A
name: Ruiz-Arguello, MB
name: Pontejo, S
name: Del Mar Fernández De Marco, M
name: Saraiva, M
name: Hernáez, B
name: Alcamí, A
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018

description: The role of cytokines and chemokines in anti-viral defense has been demonstrated, but their relative contribution to protective anti-viral responses in vivo is not fully understood. Cytokine response modifier D (CrmD) is a secreted receptor for TNF and lymphotoxin containing the smallpox virus-encoded chemokine receptor (SECRET) domain and is expressed by ectromelia virus, the causative agent of the smallpox-like disease mousepox. Here we show that CrmD is an essential virulence factor that controls natural killer cell activation and allows progression of fatal mousepox, and demonstrates that both SECRET and TNF binding domains are required for full CrmD activity. Vaccination with recombinant CrmD protects animals from lethal mousepox. These results indicate that a specific set of chemokines enhance the inflammatory and protective anti-viral responses mediated by TNF and lymphotoxin, and illustrate how viruses optimize anti-TNF strategies with addition of a chemokine binding domain as soluble decoy receptors.
description: This work was funded by Grants from the Spanish Ministry of Economy and Competitiviness and European Union (European Regional Development’s Funds, FEDER) (grant SAF2015-67485-R), and the Wellcome Trust (grant 051087/Z97/Z). M. B. R.-A. and A. Alejo were recipients of a Ramón y Cajal Contract from the Spanish Ministry of Science and Innovation.
Development of a VR tool to study pedestrian route and exit choice behaviour in a multi-story building
Creators: name: Feng, Yan
name: Duives, Dorine
name: Hoogendoorn, Serge
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Although route and exit choice in complex buildings are important aspects of pedestrian behaviour, studies predominantly investigated pedestrian movement in a single level. This paper presents an innovative VR tool that was designed to investigate pedestrian route and exit choice in a multi-story building. This tool supports free navigation and collects pedestrian walking trajectories, head movements and gaze points automatically. An experiment was conducted to evaluate the VR tool from objective standpoints (i.e., pedestrian behaviour) and subjective standpoints (i.e., the feeling of presence, system usability, simulation sickness). The results show that the VR tool allows for accurate collection of pedestrian behavioural data in the complex building. Moreover, the results of the questionnaire report high realism of the virtual environment, high immersive feeling, high usability, and low simulator sickness. This paper contributes by showcasing an innovative approach of applying VR technologies to study pedestrian behaviour in complex and realistic environments.
Crystallization kinetics of sodium sulphate in a salting out MSMPR crystallizer system Na₂SO₄/H₂S0₄/H₂O/MeOH /
Creators: name: Mina-Mankarios, George
Publisher: name: University of British Columbia
Year: 2012

description: The growth and nucleation rates of sodium sulfate crystals salted out from their solution in a 38% w/w sulfuric acid solvent by the addition of an 80:20 w/w methanol : water solution, were determined from measurements of the steady-state crystal size distribution (CSD) generated in a continuous mixed-suspension, mixed-product-removal (MSMPR) salting out crystallizer, and the effect of the supersaturation, the crystal suspension density and the temperature on these rates was investigated. The effect of the Cr+ + + impurity was also briefly studied. For the pure system, the power-law kinetic rate equations of crystal growth (G = KGSg ) and crystal nucleation (B = KBSb ) were fitted to the experimental data and the fitting parameters were determined at each of 25, 30 and 35°C. In addition, the nucleation and growth rate data were fitted to the relative kinetic equation (B = KbGi) to provide a basis for comparison between i and b/g. Secondary nucleation effects were investigated by testing, in parallel with the primary nucleation rate equation B = KBSb, the rate equation B = KNMTJSu which includes a nucleation dependence on the crystal suspension density. The relative kinetic equation B = KnMJTGv was also tested for comparison (v compared with u/g). No evidence of secondary nucleation could be shown. The fitted estimates of j were non-positive at all temperatures and statistically non-different from zero at 35 and 30°C, just approaching significance at 25°C with a negative point estimate for j. Primary nucleation was shown to be the dominant nucleating mechanism for this system. The growth rate kinetic order g was determined to be essentially unity (G = KGS0.97 ) and was statistically non-changing with temperature. The nucleation rate kinetic order b was similarly temperature independent and was determined as 2.1 (B = KBS2.1). The kinetic rate constants KG and KB were both a function of temperature and were fitted to an Arrhenius type temperature dependence to give KG = 43960 exp(-24600/RT) and KB = 0.064 exp(70870/RT) where R is in kJ/kmole-K. The activation energy for growth was positive at 24600 kJ/kmole. The nucleation activation energy was negative and larger in magnitude at -70870 kJ/kmole. In the presence of the chromium impurity, the kinetic parameters KG , g, KB , Kb, and i were determined at three levels of the concentration of the impurity in the crystallizer feed. An increase in the impurity concentration was shown to cause an increase in the growth rate constant KG but had no significant effect on the nucleation kinetics. The result was a decrease in the relative rate constant and therefore a larger crystal size. The kinetics of crystallization as determined for this system would indicate that a high temperature, high crystal suspension density and long residence time are conditions which are favourable for the production of a large sodium sulfate crystal.
Additional file 1 of Evaluation of the implementation process of the mobile health platform ‘WelTel’ in six sites in East Africa and Canada using the modified consolidated framework for implementation research (mCFIR)
Creators: name: El Joueidi, Samia
name: Bardosh, Kevin
name: Musoke, Richard
name: Tilahun, Binyam
name: Abo Moslim, Maryam
name: Gourlay, Katie
name: MacMullin, Alissa
name: Cook, Victoria J.
name: Murray, Melanie
name: Mbaraga, Gilbert
name: Nsanzimana, Sabin
name: Lester, Richard
Publisher: name: figshare
Year: 2021
Subjects: subject: Computer Software
subject: FOS: Computer and information sciences
subject: Information Systems

description: Additional file 1: mCFIR Tool, Survey
Generating families and Legendrian contact homology in the standard contact space
Creators: name: Fuchs, Dmitry
name: Rutherford, Dan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Symplectic Geometry (math.SG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57R17, 57M27

description: We show that if a Legendrian knot in standard contact ${\bb R}^3$ possesses a generating family then there exists an augmentation of the Chekanov-Eliashberg DGA so that the associated linearized contact homology (LCH) is isomorphic to singular homology groups arising from the generating family. In this setting we show Sabloff's duality result for LCH may be viewed as Alexander duality. In addition, we provide an explicit construction of a generating family for a front diagram with graded normal ruling and give a new approach to augmentation $\Rightarrow$ normal ruling.
description: Revised version, to appear in Journal of Topology. Following referee suggestions, parts of sections 4 and 6 have been removed for more efficient exposition
Polarization preserving ultra fast optical shutter for quantum information processing
Creators: name: Spagnolo, Nicolo'
name: Vitelli, Chiara
name: Giacomini, Sandro
name: Sciarrino, Fabio
name: De Martini, Francesco
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present the realization of a ultra fast shutter for optical fields, which allows to preserve a generic polarization state, based on a self-stabilized interferometer. It exhibits high (or low) transmittivity when turned on (or inactive), while the fidelity of the polarization state is high. The shutter is realized through two beam displacing prisms and a longitudinal Pockels cell. This can represent a useful tool for controlling light-atom interfaces in quantum information processing.
description: 4 pages, 6 figures
title: Hematodinium In Irish Sea Nephrops
Creators: name: McAliksey, M.
name: Briggs, R.P.
Publisher: name: ASC 1997 - HH
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.Ilernafudinium is a dinoflagellate parasite found to infect Nephrops around the coastofScotland. Highest infections have been repoited in Nephrops from the Clyde Sea Area andoffthe west coast of Scotland (Field et al.. 1992). Experiments showed that infection was fatalbut cross infection between individuals in captivity does not occur. These early studies inScotland were part of a MAFF fundcd project on Hematodinium co-ordinated by GlasgowUniversity (Field d al., i997). The studies describcd here have demomitratecl the presence ofthe parasite in Irish Sea Nephrops.
Globular realization and cubical underlying homotopy type of time flow of process algebra
Creators: name: Gaucher, Philippe
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Topology (math.AT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 55U35

description: We construct a small realization as flow of every precubical set (modeling for example a process algebra). The realization is small in the sense that the construction does not make use of any cofibrant replacement functor and of any transfinite construction. In particular, if the precubical set is finite, then the corresponding flow has a finite globular decomposition. Two applications are given. The first one presents a realization functor from precubical sets to globular complexes which is characterized up to a natural S-homotopy. The second one proves that, for such flows, the underlying homotopy type is naturally isomorphic to the homotopy type of the standard cubical complex associated with the precubical set.
description: 31 pages, 1 figure, LaTeX2e
Sundial-water clock of the Bronze Age (Northern Black Sea Region)
Creators: name: Vodolazhskaya, L. N.
name: Novichikhin, A. M.
name: Nevsky, M. Yu.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Popular Physics (physics.pop-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: This article presents the results of a study of signs on a Bronze Age slab discovered in the vicinity of a heavily plowed mound near the settlement of Pyatikhatki. The slab belongs to the Dolmen archaeological culture. In the course of this research, it was proved that the Pyatikhatki slab is a unique measuring tool, that combines elements of sundial and water clock. It has all the cup marks of an analemmatic sundial, except for the presence of a precise analemma, which at that time, it seems, could not yet be built. The vertical gnomon moved only along the north-south line, and the time was determined approximately. Most likely, this was due to the lack of accuracy in measuring time using the water clock of that era. It is possible that it was their imperfection that was the incentive for the development of a new type of watch - a sundial, which would allow measuring time over a long period with a higher accuracy.
Topological quantum phase transition and the Berry phase near the Fermi surface in hole-doped quantum wells
Creators: name: Zhou, Bin
name: Liu, Chao-Xing
name: Shen, Shun-Qing
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a topological quantum phase transition for quantum states with different Berry phases in hole-doped III-V semiconductor quantum wells with bulk and structure inversion asymmetry. The Berry phase of the occupied Bloch states can be characteristic of topological metallic states. It is found that the adjustment of thickness of the quantum well may cause a transition of Berry phase in two-dimensional hole gas. Correspondingly, the jump of spin Hall conductivity accompanies the change of the Berry phase. This property is robust against the impurity potentials in the system. Experimental detection of this topological quantum phase transition is discussed.
Semiparametric curve alignment and shift density estimation for biological data
Creators: name: Trigano, T.
name: Isserles, U.
name: Ritov, Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Applications (stat.AP)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Assume that we observe a large number of curves, all of them with identical, although unknown, shape, but with a different random shift. The objective is to estimate the individual time shifts and their distribution. Such an objective appears in several biological applications like neuroscience or ECG signal processing, in which the estimation of the distribution of the elapsed time between repetitive pulses with a possibly low signal-noise ratio, and without a knowledge of the pulse shape is of interest. We suggest an M-estimator leading to a three-stage algorithm: we split our data set in blocks, on which the estimation of the shifts is done by minimizing a cost criterion based on a functional of the periodogram; the estimated shifts are then plugged into a standard density estimator. We show that under mild regularity assumptions the density estimate converges weakly to the true shift distribution. The theory is applied both to simulations and to alignment of real ECG signals. The estimator of the shift distribution performs well, even in the case of low signal-to-noise ratio, and is shown to outperform the standard methods for curve alignment.
description: 30 pages ; v5 : minor changes and correction in the proof of Proposition 3.1
Small collision systems at RHIC
Creators: name: Novitzky, Norbert
Publisher: name: Zenodo
Year: 2021
Subjects: sqm17
phenix
star
p+al
p+au
d+au
3he+au
small systems
correlations
flow
nuclear
modification
raa
π0
φ

description: (Non-PHENIX) talk given at the Strangeness in Quark Matter 2017 conference
The effect of a nonresonant radiative field on low-energy rotationally inelastic $\text{Na}^{+} + \text{N}_2$ collisions
Creators: name: Lemeshko, Mikhail
name: Friedrich, Bretislav
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We examine the effects of a linearly polarized nonresonant radiative field on the dynamics of rotationally inelastic $\text{Na}^{+} + \text{N}_2$ collisions at eV collision energies. Our treatment is based on the Fraunhofer model of matter wave scattering and its recent extension to collisions in electric fields [arXiv:0804.3318v1]. The nonresonant radiative field changes the effective shape of the target molecule by aligning it in the space-fixed frame. This markedly alters the differential and integral scattering cross sections. As the cross sections can be evaluated for a polarization of the radiative field collinear or perpendicular to the relative velocity vector, the model also offers predictions about steric asymmetry of the collisions.
description: 19 pages, 7 figures, submitted to Int. J. Mass Spec
Critical conductance of the chiral 2d random flux model
Creators: name: Schweitzer, L.
name: Markoš, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The two-terminal conductance of a random flux model defined on a square lattice is investigated numerically at the band center using a transfer matrix method. Due to the chiral symmetry, there exists a critical point where the ensemble averaged mean conductance is scale independent. We also study the conductance distribution function which depends on the boundary conditions and on the number of lattice sites being even or odd. We derive a critical exponent $ν=0.42\pm 0.05$ for square samples of even width using one-parameter scaling of the conductance. This result could not be obtained previously from the divergence of the localization length in quasi-one-dimensional systems due to pronounced finite-size effects.
description: EP2DS-17, Genua 2007, accepted for publication in Physica E
Effect of viscous friction on entropy, entropy production and entropy extraction rates in underdamped and overdamped media
Creators: name: Taye, Mesfin Asfaw
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Considering viscous friction that varies spatially and temporally, the general expressions for entropy production, free energy, and entropy extraction rates are derived to a Brownian particle that walks in an overdamped and underdamped media. Via the well known stochastic approaches to underdamped and overdamped media, the thermodynamic expressions first derived at trajectory level then generalized to an ensemble level. To study the non-equilibrium thermodynamic features of a Brownian particle that hops in a medium where its viscosity varies on time, a Brownian particle that walks on a periodic isothermal medium (in the presence or absence of load) is considered. The exact analytical results depict that in the absence of load $f=0$, the entropy production rate ${\dot e}_{p}$ approaches the entropy extraction rate ${\dot h}_{d}=0$. This is reasonable since any system which is in contact with a uniform temperature should obey the detail balance condition in a long time limit. In the presence of load and when the viscous friction decreases either spatially or temporally, the entropy $S(t)$ monotonously increases with time and saturates to a constant value as $t$ further steps up. The entropy production rate ${\dot e}_{p}$ decreases in time and at steady state (in the presence of load), ${\dot e}_{p}={\dot h}_{d}>0$. On the contrary, when the viscous friction increases either spatially or temporally, the rate of entropy production as well as the rate of entropy extraction monotonously steps up showing that such systems are inherently irreversible.
description: 12 pages, 10 figures, published in Phys. Rev. E. arXiv admin note: text overlap with arXiv:2102.08824, arXiv:1606.08346
J/psi production at high pT in p+p and A+A collisions at STAR
Creators: name: Tang, Zebo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The preliminary results of J/psi spectra at high transverse momentum (55 GeV/c. The correlations between J/psi and charged hadrons are also studied in p+p collisions to understand the J/psi production mechanism at high p_T.
description: 4 pages, 3 figures. Proceedings of the Quark Matter 2008 conference, Jaipur, India, February 4-10, 2008. Submitted to J. Phys. G: Nucl. and Part. Phys
Additional file 1 of WOMAC score and arthritis diagnosis predict decreased agricultural productivity
Creators: name: Webber, Eliza J.
name: Tran, Tan
name: June, Ronald
name: Healy, Emily
name: Andrews, Tara M.
name: Roubie Younkin
name: MacDonald, Justin
name: Adams, Erik S.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1.
Two-Dimensional Island Shape Determined by Detachment
Creators: name: Saito, Yukio
name: Kawasaki, Ryo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Effect of an anisotropic detachment on a heteroepitaxial island shape is studied by means of a kinetic Monte Carlo simulation of a square lattice gas model. Only with molecular deposition followed by surface diffusion, islands grow in a ramified dendritic shape, similar to DLA. Introduction of molecular detachment from edges makes islands compact. To understand an anisotropic island shape observed in the experiment of pentacene growth on a hydrogen-terminated Si(111) vicinal surface, asymmetry in detachment around the substrate step is assumed. Edge molecules detach more to the higher terrace than to the lower terrace. The island edge from which molecules are easy to detach is smooth and the one hard to detach is dendritic. If islands are close to each other, islands tend to align in a line, since detached molecules from the smooth edge of the right island are fed to the dendritic and fast growing edge of the left island.
description: 13 pages, 5 figures
Calculations of $^{6}$He+p elastic scattering cross sections using folding approach and high-energy approximation for the optical potential
Creators: name: Lukyanov, K. V.
name: Lukyanov, V. K.
name: Zemlyanaya, E. V.
name: Antonov, A. N.
name: Gaidarov, M. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Calculations of microscopic optical potentials (OP's) (their real and imaginary parts) are performed to analyze the $^6$He+p elastic scattering data at a few tens of MeV/nucleon (MeV/N). The OP's and the cross sections are calculated using three model densities of $^6$He. Effects of the regularization of the NN forces and their dependence on nuclear density are investigated. Also, the role of the spin-orbit terms and of the non-linearity in the calculations of the OP's, as well as effects of their renormalization are studied. The sensitivity of the cross sections to the nuclear densities was tested and one of them that gives a better agreement with the data was chosen.
description: 13 pages, 11 figures, to be published in Eur. Phys. J. A
Additional file 3 of Evaluation of the implementation process of the mobile health platform ‘WelTel’ in six sites in East Africa and Canada using the modified consolidated framework for implementation research (mCFIR)
Creators: name: El Joueidi, Samia
name: Bardosh, Kevin
name: Musoke, Richard
name: Tilahun, Binyam
name: Abo Moslim, Maryam
name: Gourlay, Katie
name: MacMullin, Alissa
name: Cook, Victoria J.
name: Murray, Melanie
name: Mbaraga, Gilbert
name: Nsanzimana, Sabin
name: Lester, Richard
Publisher: name: figshare
Year: 2021
Subjects: subject: Computer Software
subject: FOS: Computer and information sciences
subject: Information Systems

description: Additional file 3: Health Issues and Implementation Goals by Site Table
Additional file 1 of Identification of the most potent acetylcholinesterase inhibitors from plants for possible treatment of Alzheimer’s disease: a computational approach
Creators: name: Sarkar, Bishajit
name: Sayka Alam
name: Tiluttoma Khan Rajib
name: Islam, Syed Sajidul
name: Yusha Araf
name: Md. Asad Ullah
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1 : Supplementary Table S1. List of different amino acids within the binding pocket of AChE that interact with the four best selected ligands, along with the bond distances and types of the interactions.
Domain walls and gauge field localization in strongly-coupled pure Yang-Mills theories
Creators: name: Kobakhidze, Archil
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a mechanism of gauge field localization on a domain wall within the framework of strongly coupled pure Yang-Mills theory.
description: 9 pages, 3 figures, v2: minor corrections, references added; to be published in IJTP
Additional file 1 of Innovations with tele-ultrasound in education sonography: the use of tele-ultrasound to train novice scanners
Creators: name: Drake, Anne E.
name: Hy, Jonathan
name: MacDougall, Gordon A.
name: Holmes, Brendan
name: Icken, Lauren
name: Schrock, Jon W.
name: Jones, Robert A.
Publisher: name: figshare
Year: 2021
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Additional file 1. Appendices including: pre-training assessment, exam criteria and data selection, and post-training assessments for both traditional and remote study groups
Ferrimagnetism and antiferromagnetism in half-metallic Heusler alloys
Creators: name: Galanakis, I.
name: Ozdogan, K.
name: Sasioglu, E.
name: Aktas, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Half-metallic Heusler alloys are among the most promising materials for future applications in spintronic devices. Although most Heusler alloys are ferromagnets, ferrimagnetic or antiferromagnetic (also called fully-compensated ferrimagnetic) alloys would be more desirable for applications due to the lower external fields. Ferrimagnetism can be either found in perfect Heusler compounds or achieved through the creation of defects in ferromagnetic Heusler alloys.
description: To be considered for the proceedings of the International Conference on Nanoscale Magnetism (ICNM 07)
Presentations: From Design to Delivery
Creators: name: Sewell, Claire
Publisher: name: Apollo - University of Cambridge Repository
Year: 2017
Subjects: presentations
public speaking
library and information science
librarianship

description: Presentation skills are a vital part of working in the information profession yet this is an area many people feel uncomfortable with. They assume that presenting means standing up to deliver a talk to an audience but it can also involve leading a tour, speaking in meetings or working at an enquiry point. This interactive workshop, tailored specifically to the library community, will take you through the process of creating and delivering a presentation, give you tips on design and public speaking and help you to feel more confident in communicating with others. At the end of the course you will be able to deliver any kind of session with confidence
title: Estimation Of Nephrops Biomass In The Irish Sea
Creators: name: McQuaid, N.
name: M.O'Neill
name: Briggs, R.P.
name: Armstrong, M.J.
name: Dickey-Collas, M.
name: Wilson, J.
name: P.Heath
Publisher: name: ASC 1997 - HH
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.The current project is aimed at providing a fishery independent estimate of ephrops biomass in the Irish Sea using the annual larval production method. Comprehensive data on Irish Sea Nephrops larvae were made available from surveys performed as part of a recently completed project on the estimation of finfish biomasses (Anon. 1997b). These larva data will be used to back calculate Nephrops biomass from realised fecundity estimates.
Electron-phonon coupling in a two-dimensional inhomogeneous electron gas: consequences for surface spectral properties
Creators: name: Pavlenko, Natalia
name: Kopp, Thilo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the coupling of an inhomogeneous electron system to phonons. The properties of an electronic system composed of a mixture of microscopic ordered and disordered islands are changed fundamentally by a phonon mode. In high-Tc cuprates, such a phase separation scenario is supported by recent STM and nuclear quadrupole resonance studies. We show that even a weak or moderate electron-phonon coupling can be sufficient to produce dramatic changes in the electronic state of the inhomogeneous electron gas. The spectral properties calculated in our approach provide a natural explanation of the low-energy nodal ARPES features and exhibit a novel non-Fermi-liquid state stabilized through electron-phonon coupling.
description: 12 pages, 6 figures, to be published in J. Physics: Condensed Matter
Invariant expansion for the trigonal band structure of graphene
Creators: name: Winkler, R.
name: Zülicke, U.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a symmetry analysis of the trigonal band structure in graphene, elucidating the transformational properties of the underlying basis functions and the crucial role of time-reversal invariance. Group theory is used to derive an invariant expansion of the Hamiltonian for electron states near the K points of the graphene Brillouin zone. Besides yielding the characteristic k-linear dispersion and higher-order corrections to it, this approach enables the systematic incorporation of all terms arising from external electric and magnetic fields, strain, and spin-orbit coupling up to any desired order. Several new contributions are found, in addition to reproducing results obtained previously within tight-binding calculations. Physical ramifications of these new terms are discussed.
description: 10 pages, 1 figure; expanded version with more details and additional results
title: Fossil Turbolence Pattern Recognition By Dinoflagellates And Diatoms May Determine Their Growth Strategies
Creators: name: Gibson, Carl H.
Publisher: name: ASC 1997 - O
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.From laboratory experimerits with controIled strain rates, we have measured thresholdvalues EGI (0.2-0.3 cm2 s-3) of viscous dissipation rates E for growth inhibition of a red tidedinoflagellate (Thorrias and Gibson 1990ab, 1992) and a minimum time T > TgI duringaday (5-15 minutes) that E > EGI must be applied to have an effect (Gibson and Thomas1995).
Repairing Serializability Bugs in Distributed Database Programs via Automated Schema Refactoring
Creators: name: Rahmani, Kia
name: Nagar, Kartik
name: Delaware, Benjamin
name: Jagannathan, Suresh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Serializability is a well-understood concurrency control mechanism that eases reasoning about highly-concurrent database programs. Unfortunately, enforcing serializability has a high-performance cost, especially on geographically distributed database clusters. Consequently, many databases allow programmers to choose when a transaction must be executed under serializability, with the expectation that transactions would only be so marked when necessary to avoid serious concurrency bugs. However, this is a significant burden to impose on developers, requiring them to (a) reason about subtle concurrent interactions among potentially interfering transactions, (b) determine when such interactions would violate desired invariants, and (c) then identify the minimum number of transactions whose executions should be serialized to prevent these violations. To mitigate this burden, in this paper we present a sound and fully automated schema refactoring procedure that transforms a program's data layout -- rather than its concurrency control logic -- to eliminate statically identified concurrency bugs, allowing more transactions to be safely executed under weaker and more performant database guarantees. Experimental results over a range of database benchmarks indicate that our approach is highly effective in eliminating concurrency bugs, with safe refactored programs showing an average of 120% higher throughput and 45% lower latency compared to the baselines.
description: 20 pages, to appear in 42nd ACM SIGPLAN Conference on Programming Language Design and Implementation (PLDI 2021)
Peccei-Quinn-like symmetries for nonabelian axions
Creators: name: Chatterjee, Debashis
name: Mitra, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Axions were first introduced in connection with chiral symmetry but are now being looked for mainly as dark matter. In this paper we introduce a nonabelian analogue of axions which can also be potential candidates for dark matter. Their nonabelian symmetries, which are generalizations of the Peccei-Quinn symmetry, are interesting in their own right. Detailed analysis, using fermion measure and zeta function approaches shows that these symmetries are not anomalous.
title: Network Security Intelligence Centres for Information Security Incident Management
Creators: name: Miloslavskaya, Natalia
Publisher: name: University of Plymouth
Year: 2019
Subjects: subject: Network Security Intelligence Centre
subject: Information Security Incident Management
subject: Security Information and Event Management system
subject: PhD

description: Programme: 6598 - Ph.D. on the Basis of Prior Published Works in Cyber Security
description: Intensive IT development has led to qualitative changes in our living, which are driving current information security (IS) trends and require sophisticated structures and adequate approached to manage IS for different businesses. The wide range of threats is constantly growing in modern intranets; they have become not only numerous and diverse but more disruptive. In such circumstances, organizations realize that IS incidents’ timely detection and prevention in the future (what is more important) are not only possible but imperative. Any delay and only reactive actions to IS incidents put their assets under risk. A properly designed IS incident management system (ISIMS), operating as an integral part of the whole organization’s governance system, reduces IS incidents’ number and limits damage caused by them. To maximally automate IS incident management (ISIM) within one organization and to deepen its knowledge of IS level, this research proposes to unite together all advantages of a Security Intelligence Centre (SIC) and a Network Operations Centre (NOC) with their unique and joint toolkits and techniques in a unified Network SIC (NSIC). For this purpose the glossary of the research area was introduced, the taxonomy of IS threats, vulnerabilities, network attacks, and incidents was determined. Further, IS monitoring as one of the ISIM processes was described, the Security Information and Event Management (SIEM) systems’ role in it and their evolution were shown. The transition from Security Operations Centres (SOCs) to SICs was followed up. At least, modern network environment’s requirements for new protection solutions were formulated and it was proven that the NSIC proposed as a combination of a SIC and a NOC fully meets them. The NSIC’s zone security infrastructure with corresponding IS controls is proposed. Its implementation description at the Moscow Engineering Physics Institute concludes the research at this stage. In addition, some proposals for the training of highly qualified personnel for NSICs were formulated. The creation of an innovative NSIC concept, its interpretation, construction and initial implementation through original research presented are its main results. They contribute substantially to the modern networks’ security, as they extend the forefront of the SOCs and SICc used nowadays and generate significant new knowledge and understanding of network security requirements and solutions.
Vogel-Fulcher freezing in relaxor ferroelectrics
Creators: name: Pirc, R.
name: Blinc, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A physical mechanism for the freezing of polar nanoregions (PNRs) in relaxor ferroelectrics is presented. Assuming that the activation energy for the reorientation of a cluster of PNRs scales with the mean volume of the cluster, the characteristic relaxation time $τ$ is found to diverge as the cluster volume reaches the percolation limit. Applying the mean field theory of continuum percolation, the familiar Vogel-Fulcher equation for the temperature dependence of $τ$ is derived.