cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Extended time-dependent Ginzburg-Landau theory
Creators: name: Grigorishin, Konstantin V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We formulate the gauge invariant Lorentz covariant Ginzburg-Landau theory which describes nonstationary regimes: relaxation of a superconducting system accompanied by eigen oscillations of internal degrees of freedom (Higgs mode and Goldstone mode), and also forced oscillations under the action of an external gauge field. The theory describes Lorentz covariant electrodynamics of superconductors where Anderson-Higgs mechanism occurs, at the same time the dynamics of conduction electrons remains non-relativistic. It is demonstrated that Goldstone oscillations cannot be accompanied by oscillations of charge density and they generate the transverse field only. In addition, we consider Goldstone modes and features of Anderson-Higgs mechanism in two-band superconductors. We study dissipative processes, which are caused by movement of the normal component of electron liquid and violate the Lorentz covariance, on the examples of the damped oscillations of the order parameter and the skin-effect for electromagnetic waves. An experimental consequence of the extended time-dependent Ginzburg-Landau theory regarding the penetration of the electromagnetic field into a superconductor is proposed.
description: 31 pages, 8 figures,. arXiv admin note: text overlap with arXiv:cond-mat/0006070, arXiv:cond-mat/0312619 by other authors
Photoconductivity calculations of bilayer graphene from first principles and deformation-potential approach
Creators: name: Ge, Yijun
name: Fisher, Timothy S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report first-principles calculations of electron-phonon coupling in bilayer graphene and the corresponding contribution to carrier scattering. At the phonon $Γ$ point, electrons with energies less than 200 meV are scattered predominantly by LA$^\prime$ and TA$^\prime$ modes while higher-energy electron scattering is dominated by optical phonon modes. Based on a two-temperature model, heat transfer from electrons with an initial temperature of 2000 K to the lattice (phonons) with an initial temperature of 300 K is computed, and in the overall relaxation process, most of this energy scatters into K-point phonon optical modes due to their strong coupling with electrons and their high energies. A Drude model is used to calculate photoconductivity for bilayer graphene with different doping levels. Good agreement with prior experimental trends for both the real and imaginary components of photoconductivity confirms the model's applicability. The effects of doping levels and electron-phonon scattering on photoconductiviy are analyzed. We also extract acoustic and optical deformation potentials from average scattering rates obtained from density functional theory (DFT) calculations and compare associated photoconductivity calculations with DFT results. The comparison indicates that momentum-dependent electron-phonon scattering potentials are required to provide accurate predictions.
On knots in subdivergent diagrams
Creators: name: Kreimer, Dirk
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We investigate Feynman diagrams which are calculable in terms of generalized one-loop functions, and explore how the presence or absence of transcendentals in their counterterms reflects the entanglement of link diagram constructed from them and explains unexpected relations between them.
description: 15 pages, latex, uses epsf for 10 figs. To appear in Z.Phys.C, results now discussed from the point of view of Gauss codes
Excited bands in odd-mass rare-earth nuclei
Creators: name: Vargas, C. E.
name: Hirsch, J. G.
name: Draayer, J. P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Normal parity bands are studied in 157Gd, 163Dy and 169Tm using the pseudo SU(3) shell model. Energies and B(E2) transition strengths of states belonging to six low-lying rotational bands with the same parity in each nuclei are presented. The pseudo SU(3) basis includes states with pseudo-spin 0 and 1, and 1/2 and 3/2, for even and odd number of nucleons, respectively. States with pseudo-spin 1 and 3/2 must be included for a proper description of some excited bands.
description: 8 pages, 6 figures, Submitted to Phys. Rev. C
Hybrid-FL for Wireless Networks: Cooperative Learning Mechanism Using Non-IID Data
Creators: name: Yoshida, Naoya
name: Nishio, Takayuki
name: Morikura, Masahiro
name: Yamamoto, Koji
name: Yonetani, Ryo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: This paper proposes a cooperative mechanism for mitigating the performance degradation due to non-independent-and-identically-distributed (non-IID) data in collaborative machine learning (ML), namely federated learning (FL), which trains an ML model using the rich data and computational resources of mobile clients without gathering their data to central systems. The data of mobile clients is typically non-IID owing to diversity among mobile clients' interests and usage, and FL with non-IID data could degrade the model performance. Therefore, to mitigate the degradation induced by non-IID data, we assume that a limited number (e.g., less than 1%) of clients allow their data to be uploaded to a server, and we propose a hybrid learning mechanism referred to as Hybrid-FL, wherein the server updates the model using the data gathered from the clients and aggregates the model with the models trained by clients. The Hybrid-FL solves both client- and data-selection problems via heuristic algorithms, which try to select the optimal sets of clients who train models with their own data, clients who upload their data to the server, and data uploaded to the server. The algorithms increase the number of clients participating in FL and make more data gather in the server IID, thereby improving the prediction accuracy of the aggregated model. Evaluations, which consist of network simulations and ML experiments, demonstrate that the proposed scheme achieves a 13.5% higher classification accuracy than those of the previously proposed schemes for the non-IID case.
Representation Functions for Jordanian Quantum Group SL_h(2) and Jacobi Polynomials
Creators: name: Aizawa, N.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: The explicit expressions of the representation functions (D-functions) for Jordanian quantum group SL_h(2) are obtained by combination of tensor operator technique and Drinfeld twist. It is shown that the D-functions can be expressed in terms of Jacobi polynomials as the undeformed D-functions can. Some of the important properties of the D-functions for SL_h(2) such as Winger's product law, recurrence relations, RTT type relations are also presented.
description: 25pp, LaTeX2e, No figures, to be published in J. Phys. A
Additional file 4: of Control of paratuberculosis: who, why and how. A review of 48 countries
Creators: name: Whittington, Richard
name: Donat, Karsten
name: Weber, Maarten
name: Kelton, David
name: Nielsen, Søren
name: Eisenberg, Suzanne
name: Arrigoni, Norma
name: Juste, Ramon
name: Sáez, Jose
name: Navneet Dhand
name: Santi, Annalisa
name: Michel, Anita
name: Barkema, Herman
name: Kralik, Petr
name: Kostoulas, Polychronis
name: Citer, Lorna
name: Griffin, Frank
name: Barwell, Rob
name: Moreira, Maria
name: Slana, Iva
name: Koehler, Heike
name: Shoor Singh
name: Yoo, Han
name: Chávez-Gris, Gilberto
name: Goodridge, Amador
name: Matjaz Ocepek
name: Garrido, Joseba
name: Stevenson, Karen
name: Collins, Mike
name: Alonso, Bernardo
name: Cirone, Karina
name: Paolicchi, Fernando
name: Gavey, Lawrence
name: Md Rahman
name: Marchin, Emmanuelle
name: Praet, Willem
name: Bauman, Cathy
name: Fecteau, Gilles
name: McKenna, Shawn
name: Salgado, Miguel
name: Fernández-Silva, Jorge
name: Dziedzinska, Radka
name: Echeverría, Gustavo
name: Seppänen, Jaana
name: Thibault, Virginie
name: Fridriksdottir, Vala
name: Abdolah Derakhshandeh
name: Haghkhah, Masoud
name: Ruocco, Luigi
name: Kawaji, Satoko
name: Momotani, Eiichi
name: Heuer, Cord
name: Solis Norton
name: Cadmus, Simeon
name: Agdestein, Angelika
name: Kampen, Annette
name: Szteyn, Joanna
name: Frössling, Jenny
name: Schwan, Ebba
name: Caldow, George
name: Strain, Sam
name: Carter, Mike
name: Wells, Scott
name: Musso Munyeme
name: Wolf, Robert
name: Gurung, Ratna
name: Cristobal Verdugo
name: Fourichon, Christine
name: Yamamoto, Takehisa
name: Sharada Thapaliya
name: Labio, Elena
name: Monaya Ekgatat
name: Gil, Andres
name: Alesandre, Alvaro
name: Piaggio, José
name: Suanes, Alejandra
name: Waard, Jacobus
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Country-specific summaries 25–2-19 Tables. (PDF 280 kb)
Operator algebraic applications in symbolic dynamics
Creators: name: Carlsen, Toke Meier
Publisher: name: Zenodo
Year: 2004
Subjects: C*-algebra
Operator algebra
Shift spaces
Subshifts
Groupoids
Cuntz-Pimsner algebras
Partial dynamical systems
K-theory
Cohomology
Substitutional dynamical systems

description: PhD thesis in mathematics.
Thermo-optical pulsing in a microresonator filtered fiber-laser: a route towards all-optical control and synchronization
Creators: name: Rowley, Maxwell
name: Wetzel, Benjamin
name: Di Lauro, Luigi
name: Gongora, Juan S. Totero
name: Bao, Hualong
name: Silver, Jonathan
name: Del Bino, Leonardo
name: Haye, Pascal Del'
name: Peccianti, Marco
name: Pasquazi, Alessia
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on 'slow' pulsing dynamics in a silica resonator-based laser system: by nesting a high-Q rod-resonator inside an amplifying fiber cavity, we demonstrate that trains of microsecond pulses can be generated with repetition rates in the hundreds of kilohertz. We show that such pulses are produced with a period equivalent to several hundreds of laser cavity roundtrips via the interaction between the gain dynamics in the fiber cavity and the thermo-optical effects in the high-Q resonator. Experiments reveal that the pulsing properties can be controlled by adjusting the amplifying fiber cavity parameters. Our results, confirmed by numerical simulations, provide useful insights on the dynamical onset of complex self-organization phenomena in resonator-based laser systems where thermo-optical effects play an active role. In addition, we show how the thermal state of the resonator can be probed and even modified by an external, counter-propagating optical field, thus hinting towards novel approaches for all-optical control and sensing applications.
Matrix analogs of B-functions and Plancherel formula for Berezin kernel representations
Creators: name: Neretin, Yu. A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Representation Theory (math.RT)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 43A85, 22E45, 53C35

description: We obtain a family of matrix integrals which decompose to a product of Gamma-functions (they have some relations with S.G.Gindikin 'Beta', but generally speaking essentially differ from it). We obtain Plancherel formula for Berezin representations for all series of classical groups (for large values of parameters of representations). The Berezin representations are deformations of L^2 on Riemann noncompact symmetric spaces G/K defined by Berezin kernels, i.e powers of |det(1-zu^*)| (in matrix ball models). These representations also can be obtained by restrictions of holomorphic representations of some group Q containing G as symmetric subgroup. We also discuss models of noncompact Riemann symmetric spaces: matrix balls, matrix cones, matrix wedges, and sections of wedges.
Probing the Isospin Dependent In-Medium Nucleon-Nucleon Cross Section by Nucleon Emissions
Creators: name: Liu, Jian-Ye
name: Guo, Wen-Jun
name: Xing, Yong-Zhong
name: Zuo, Wei
name: Lee, Xi-Guo
name: Li, Zeng-Hua
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The effects of the symmetry potential and the isospin dependent in-medium nucleon-nucleon (NN) cross section on the number of proton(neutron) emissions N$_p(N_n$) are studied respectively within an isospin-dependent quantum molecular dynamics (IQMD) model. The isospin dependent in-medium NN cross section is found to have a strong influence on N$_p(N_n$) but N$_p(N_n$) is not sensitive to the symmetry potential for the neutron-deficient colliding system at relatively high energies.We propose to make use of the N$_p(N_n$) as a probe to extract information on the isospin dependent in-medium NN cross section.
description: 7 pages,3 figures
The universal freeze-out criterion at SPS and RHIC
Creators: name: Tomasik, Boris
name: Wiedemann, Urs Achim
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We formulate a freeze-out criterion for ultra-relativistic heavy ion collisions in terms of the pion escape probability from the collision region. We find that the increase in pion phase-space density from SPS to RHIC reported at this conference has a small influence on particle freeze-out because of the small pi-pi cross-section. Our treatment takes into account dynamical expansion, chemical composition and momentum of the escaping particle for particle freeze-out. It supports a freeze-out at rather low temperature - below 100 MeV - and earlier decoupling of high p_t particles.
description: proceedings of Quark Matter 2002, 4 pages, 2 figures
National Open Access Monitor, Ireland - Launch
Creators: name: Grypari, Ioanna
name: Pispiringas, Leonidas
Publisher: name: Zenodo
Year: 2024

description: This presentation took place during the webinar "Advancing Open Science: Introducing the Irish National Open Access Monitor" on Wednesday 20 March 2024, which officially launched the Irish National Open Access Monitor.

This webinar introduced the National Open Access Monitor, a collaborative effort by the National Open Research Forum (NORF), Irish Research eLibrary (IReL), and OpenAIRE, the Monitor is hosted at https://oamonitor.ireland.openaire.eu/ and is currently in its pilot phase. The discussion focused on the customized dashboards cater to the specific needs of various research stakeholders, including RPOs, RFOs, and researchers, and how these tools can be used to support the evaluation and advancement of Open Science initiatives.

For more information on the Irish Open Access Monitor read the official press release here https://www.openaire.eu/national-open... and the report here https://doi.org/10.5281/zenodo.10838956.
Additional file 2 of Peer education for HIV prevention among high-risk groups: a systematic review and meta-analysis
Creators: name: He, Jiayu
name: Wang, Ying
name: Du, Zhicheng
name: Liao, Jing
name: He, Na
name: Hao, Yuantao
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 2: Table S1. Study quality assessment. Table S2. The results of egger test.
Development of Construction Projects Scheduling with Evolutionary Algorithms
Creators: Tavakolan, Mehdi
Publisher: name: Columbia University
Year: 2011
Subjects: subject: Civil engineering
subject: FOS: Civil engineering
subject: Industrial engineering

description: Evolutionary Algorithms (EAs) as appropriate tools to optimize multi-objective problems have been applied to optimize construction projects in the last two decades. However, studies on improving the convergence ratio and processing time in the most applied algorithms such as Genetic Algorithm (GA), Particle Swarm Optimization (PSO) and Ant Colony Optimization (ACO) in construction engineering and management domains remain poorly understood. Furthermore, hybrid algorithms such as Hybrid Genetic Algorithm-Particle Swarm Optimization (HGAPSO) and Shuffled Frog Leaping Algorithm (SFLA) have been presented in computational optimization and water resource management domains during recent years to prevent pitfalls of the aforementioned algorithms. In this dissertation, I present three studies on hybrid algorithms to show that our proposed hybrid approaches are superior than existing optimization algorithms in finding better project schedule solutions with less total project cost, shorter total project duration, and less total resources allocation moments. In the first, I present a HGAPSO approach to solve complex, TCRO problems in construction project planning. Our proposed approach uses the fuzzy set theory to characterize uncertainty about the input data (i.e., time, cost, and resources required to perform an activity). In the second, I present the SFLA algorithm to solve TCRO problems using splitting allowed during activities execution. The third study involves the evaluation of the inflation impact on resources unit price during execution of construction projects. This research presents the comprehensive TCRO model by comparing two hybrid algorithms, HGAPSO and SFLA, with the three most capable algorithms -- GA, PSO and ACO -- in six different examples in terms of the structure of projects, construction assumptions and kinds of Time-Cost functions. Each of the three studies helps overcome parts of EAs problems and contributes to obtaining optimal project schedule solutions of total project duration, total project cost and total resources allocation moments of construction projects in the planning stage. The findings have significant implications in improving the scheduling of construction projects.
Additional file 3: of Control of paratuberculosis: who, why and how. A review of 48 countries
Creators: name: Whittington, Richard
name: Donat, Karsten
name: Weber, Maarten
name: Kelton, David
name: Nielsen, Søren
name: Eisenberg, Suzanne
name: Arrigoni, Norma
name: Juste, Ramon
name: Sáez, Jose
name: Navneet Dhand
name: Santi, Annalisa
name: Michel, Anita
name: Barkema, Herman
name: Kralik, Petr
name: Kostoulas, Polychronis
name: Citer, Lorna
name: Griffin, Frank
name: Barwell, Rob
name: Moreira, Maria
name: Slana, Iva
name: Koehler, Heike
name: Shoor Singh
name: Yoo, Han
name: Chávez-Gris, Gilberto
name: Goodridge, Amador
name: Matjaz Ocepek
name: Garrido, Joseba
name: Stevenson, Karen
name: Collins, Mike
name: Alonso, Bernardo
name: Cirone, Karina
name: Paolicchi, Fernando
name: Gavey, Lawrence
name: Md Rahman
name: Marchin, Emmanuelle
name: Praet, Willem
name: Bauman, Cathy
name: Fecteau, Gilles
name: McKenna, Shawn
name: Salgado, Miguel
name: Fernández-Silva, Jorge
name: Dziedzinska, Radka
name: Echeverría, Gustavo
name: Seppänen, Jaana
name: Thibault, Virginie
name: Fridriksdottir, Vala
name: Abdolah Derakhshandeh
name: Haghkhah, Masoud
name: Ruocco, Luigi
name: Kawaji, Satoko
name: Momotani, Eiichi
name: Heuer, Cord
name: Solis Norton
name: Cadmus, Simeon
name: Agdestein, Angelika
name: Kampen, Annette
name: Szteyn, Joanna
name: Frössling, Jenny
name: Schwan, Ebba
name: Caldow, George
name: Strain, Sam
name: Carter, Mike
name: Wells, Scott
name: Musso Munyeme
name: Wolf, Robert
name: Gurung, Ratna
name: Cristobal Verdugo
name: Fourichon, Christine
name: Yamamoto, Takehisa
name: Sharada Thapaliya
name: Labio, Elena
name: Monaya Ekgatat
name: Gil, Andres
name: Alesandre, Alvaro
name: Piaggio, José
name: Suanes, Alejandra
name: Waard, Jacobus
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Fig. S25-S2-S19 final. Data plots. (PDF 102 kb)
title: Chemical Magnetoreception
title: Bird Cryptochrome 1a Is Excited by Blue Light and Forms Long-Lived Radical- Pairs
titleType: Subtitle
Creators: name: Liedvogel, Miriam
name: Maeda, Kiminori
name: Henbest, Kevin
name: Schleicher, Erik
name: Simon, Thomas
name: Timmel, Christiane R.
name: Hore, P. J.
name: Mouritsen, Henrik
Publisher: name: Freie Universität Berlin
Year: 2007
Subjects: subject: 500 Naturwissenschaften und Mathematik::540 Chemie
subject: 500 Naturwissenschaften und Mathematik::530 Physik

description: Cryptochromes (Cry) have been suggested to form the basis of light-dependent magnetic compass orientation in birds. However, to function as magnetic compass sensors, the cryptochromes of migratory birds must possess a number of key biophysical characteristics. Most importantly, absorption of blue light must produce radical pairs with lifetimes longer than about a microsecond. Cryptochrome 1a (gwCry1a) and the photolyase-homology-region of Cry1 (gwCry1-PHR) from the migratory garden warbler were recombinantly expressed and purified from a baculovirus/Sf9 cell expression system. Transient absorption measurements show that these flavoproteins are indeed excited by light in the blue spectral range leading to the formation of radicals with millisecond lifetimes. These biophysical characteristics suggest that gwCry1a is ideally suited as a primary light-mediated, radical-pair-based magnetic compass receptor
The family G_T of graded quotients of k[x,y] of given Hilbert function
Creators: name: Iarrobino, A.
name: Yameogo, J.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 14C05 (primary), 13D40, 5A17 (secondary)

description: The nonsingular variety G_T parametrizes all graded ideals I of R=k[x,y] for which the Hilbert function H(R/I)=T. The variety G_T has a natural cellular decomposition: each cell V(E) corresponds to a monomial ideal E for which H(R/E)=T. Given a monomial ideal E, the quotient R/E has a basis of monomials in the shape of a partition P(E), having "diagonal lengths" T. The dimension of the cell V(E) is the number of difference one hooks of P(E). We show that G_T is birational to a certain product SGrass(T) of small Grassman varieties, and that over the complexes, the birational map induces an isomorphism of homology groups, but not usually an isomorphism of rings. We determine the homology ring) when T=(1,2,...,d-1,d,...,d,1). This G(T) is the desingularisation of the d-secant bundle Sec(d,j) of the degree-j rational normal curve, We determine the classes of the pullbacks of the higher singular loci of Sec(d,j). We also use the ring H*(G_T) to determine the number of ideals satisfying an intersection of ramification conditions at different points of P^1. A main tool is a combinatorial "hook code" for the partition P(E), that gives the image of the cell V(E) in SGrass(T).
description: 37 pages. This version is an extensive rewrite, and includes minor corrections. The main results are the same
Leucetta Haeckel 1872
Creators: name: Valderrama, Diego
name: Rossi, André Linhares
name: Solé-Cava, Antonio Mateo
name: Rapp, Hans Tore
name: Klautau, Michelle
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Calcarea
Clathrinida
Leucettidae
Leucetta

description: GENUS LEUCETTA HAECKEL, 1872
 Type species: Leucetta primigenia Haeckel, 1872 (by original designation).
 Min., minimum; Max., maximum; SD, standard deviation; N, number of spicules measured; N, number of specimens analysed.
 L., Leucetta; t -test value or Mann-Whitney U; * P <0.05. Underlined text indicates Mann–Whitney U test results.
 Diagnosis: Leucettidae with a homogeneous organization of the wall and a typical leuconoid aquiferous system. There is neither a clear distinction between the cortex and the choanoskeleton, nor the presence of a distinct layer of subcortical inhalant cavities. The atrium is frequently reduced to a system of exhalant canals that open directly into the osculum or may be a large cavity (modified from Borojevic et al., 2002).
description: Published as part of Valderrama, Diego, Rossi, André Linhares, Solé-Cava, Antonio Mateo, Rapp, Hans Tore & Klautau, Michelle, 2009, Revalidation of Leucetta floridana (Haeckel, 1872) (Porifera, Calcarea): a widespread species in the tropical western Atlantic, pp. 1-16 in Zoological Journal of the Linnean Society 157 (1) on pages 8-9, DOI: 10.1111/j.1096-3642.2009.00522.x, http://zenodo.org/record/10114780
Sugawara Construction for Higher Genus Riemann Surfaces
Creators: name: Schlichenmaier, Martin
Publisher: name: arXiv
Year: 1998
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B66 (primary); 17B66, 17B90, 30F30, 14H55, 81R10, 81R40

description: By the classical genus zero Sugawara construction one obtains from admissible representations of affine Lie algebras (Kac-Moody algebras of affine type) representations of the Virasoro algebra. In this lecture first the classical construction is recalled. Then, after giving a review on the global multi-point algebras of Krichever-Novikov type for compact Riemann surfaces of arbitrary genus, the higher genus Sugawara construction is introduced. Finally, the lecture reports on results obtained in joint work with O.K. Sheinman. We were able to show that also in the higher genus, multi-point situation one obtains from representations of the global algebras of affine type representations of a centrally extended algebra of meromorphic vector fields on Riemann surfaces. The latter algebra is the generalization of the Virasoro algebra to higher genus. Invited lecture at the XVI${}^{th}$ workshop on geometric methods in physics, Bialowieza, Poland, June 30 -- July 6, 1997.
description: 19 pages, latexe
title: Social work after stroke
title: identifying demand for support by recording stroke patients’ and carers’ needs in different phases after stroke
titleType: Subtitle
Creators: name: Padberg, Inken
name: Knispel, Petra
name: Zoellner, Susanne
name: Sieveking, Meike
name: Schneider, Alice
name: Steinbrink, Jens
name: Heuschmann, Peter U.
name: Wellwood, Ian
name: Meisel, Andreas
Publisher: name: Freie Universität Berlin
Year: 2016
Subjects: subject: Social support
subject: Stroke
subject: Rehabilitation
subject: Social work
subject: Patient-centered care
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::615 Pharmakologie, Therapeutik
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit

description: Background Previous studies examining social work interventions in stroke often lack information on content, methods and timing over different phases of care including acute hospital, rehabilitation and out-patient care. This limits our ability to evaluate the impact of social work in multidisciplinary stroke care. We aimed to quantify social-work-related support in stroke patients and their carers in terms of timing and content, depending on the different phases of stroke care. Methods We prospectively collected and evaluated data derived from a specialized “Stroke-Service-Point” (SSP); a “drop in” center and non-medical stroke assistance service, staffed by social workers and available to all stroke patients, their carers and members of the public in the metropolitan region of Berlin, Germany. Results Enquiries from 257 consenting participants consulting the SSP between March 2010 and April 2012 related to out-patient and in-patient services, therapeutic services, medical questions, medical rehabilitation, self-help groups and questions around obtaining benefits. Frequency of enquiries for different topics depended on whether patients were located in an in-patient or out-patient setting. The majority of contacts involved information provision. While the proportion of male and female patients with stroke was similar, about two thirds of the carers contacting the SSP were female. Conclusion The social- work-related services provided by a specialized center in a German metropolitan area were diverse in terms of topic and timing depending on the phase of stroke care. Targeting the timing of interventions might be important to increase the impact of social work on patient’s outcome.
Catalysis of “outer-phase” oxygen atom exchange reactions by encapsulated “inner-phase” water in {V15Sb6}-type polyoxovanadates
Creators: name: Wendt, Michael
name: Warzok, Ulrike
name: Näther, Christian
name: Leusen, Jan Van
name: Kögerler, Paul
name: Schalley, Christoph A.
name: Bensch, Wolfgang
Publisher: name: Freie Universität Berlin
Year: 2016
Subjects: subject: 500 Naturwissenschaften und Mathematik::540 Chemie

description: Antimonato polyoxovanadate (POV) cluster compounds {M(en)3}3[V15Sb6O42(H2O)x]·nH2O (M = FeII, CoII, NiII and x = 0 or 1) obtained under solvothermal conditions exhibit unusual high water solubility making these compounds promising synthons for generation of new POV structure types. Electrospray ionization mass spectrometry provides evidence (i) for a water molecule encapsulated inside the cavity of a fraction of the spherical cluster shells, (ii) for a post-functionalization in water, namely a slow exchange of VO against Sb2O, (iii) for the inner-phase reactivity of the encapsulated water that is capable of opening an oxo-bridge, and (iv) for a significant acceleration of the 16O/18O exchange reactions of oxygen atoms in the cluster periphery with surrounding H218O, when encapsulated water is present. To the best of our knowledge, this is the first example in polyoxovanadate chemistry for the transduction of inner-phase reactivity of an encapsulated guest molecule into changes in the outer-phase reactivity of the cluster. Magnetic susceptibility measurements reflect the individual contributions of the frustrated {V15} spin polytope and the {M(en)3}2+ complexes, with very weak coupling between these groups.
title: Protein Fold Recognition Using Segmentation-based Features
Creators: name: Dehzangi, Abdollah
Publisher: name: Griffith University
Year: 2015
Subjects: subject: Proteins
subject: Protein fold recognition

description: Proteins are considered to be one of the most important biological macromolecules and play a wide range of vital roles in most biological interactions. Therefore, determining how they function is an important task in biology and biomedical science. Protein fold recognition is defined as assigning a given protein to a fold (among a finite number of folds) that represents its functionality as well as its major tertiary structure. Despite all the efforts made over the last two decades, finding an effective computational approach to solve this problem still remains challenging for computational biology and bioinformatics. In this study we enhance the protein fold prediction accuracy by employing evolutionary and structural information for feature extraction. Based on our previously proposed feature extraction techniques to extract physicochemical-based features, we develop segmented distribution and segmented auto-covariance feature extraction methods to extract local evolutionary and structural information. By applying an SVM to our extracted features, we enhance the protein fold prediction accuracy up to 7.2% better than the best result found in the literature. In conclusion, we develop several segmentation-based feature extraction techniques that enable us to extract local discriminatory information for protein fold recognition better than previously proposed approaches to achieve this goal.
Off-shell effects and consistency of many-body treatments of dense matter
Creators: name: Krippa, Boris
name: Birse, Michael C.
name: McGovern, Judith A.
name: Walet, Niels R.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Effective field theory requires all observables to be independent of the representation used for the quantum field operators. It means that off-shell properties of the interactions should not lead to any observable effects. We analyse this issue in the context of many-body approaches to nuclear matter, where it should be possible to shift the contributions of lowest order in purely off-shell two-body interactions into three-body forces. We show that none of the commonly used truncations of the two-body scattering amplitude such as the ladder, Brueckner-Hartree-Fock or parquet approximations respect this requirement.
description: 5 pages, RevTeX, 6 figures
Computing data for Levin-Wen with defects
Creators: name: Bridgeman, Jacob C.
name: Barter, Daniel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We demonstrate how to do many computations for non-chiral topological phases with defects. These defects may be 1-dimensional domain walls or 0-dimensional point defects. Using $\operatorname{Vec}(S_3)$ as a guiding example, we demonstrate how domain wall fusion and associators can be computed using generalized tube algebra techniques. These domain walls can be both between distinct or identical phases. Additionally, we show how to compute all possible point defects, and the fusion and associator data of these. Worked examples, tabulated data and Mathematica code are provided.
description: 17+25 pages, many tables and attached code
Additional file 2: of Control of paratuberculosis: who, why and how. A review of 48 countries
Creators: name: Whittington, Richard
name: Donat, Karsten
name: Weber, Maarten
name: Kelton, David
name: Nielsen, Søren
name: Eisenberg, Suzanne
name: Arrigoni, Norma
name: Juste, Ramon
name: Sáez, Jose
name: Navneet Dhand
name: Santi, Annalisa
name: Michel, Anita
name: Barkema, Herman
name: Kralik, Petr
name: Kostoulas, Polychronis
name: Citer, Lorna
name: Griffin, Frank
name: Barwell, Rob
name: Moreira, Maria
name: Slana, Iva
name: Koehler, Heike
name: Shoor Singh
name: Yoo, Han
name: Chávez-Gris, Gilberto
name: Goodridge, Amador
name: Matjaz Ocepek
name: Garrido, Joseba
name: Stevenson, Karen
name: Collins, Mike
name: Alonso, Bernardo
name: Cirone, Karina
name: Paolicchi, Fernando
name: Gavey, Lawrence
name: Md Rahman
name: Marchin, Emmanuelle
name: Praet, Willem
name: Bauman, Cathy
name: Fecteau, Gilles
name: McKenna, Shawn
name: Salgado, Miguel
name: Fernández-Silva, Jorge
name: Dziedzinska, Radka
name: Echeverría, Gustavo
name: Seppänen, Jaana
name: Thibault, Virginie
name: Fridriksdottir, Vala
name: Abdolah Derakhshandeh
name: Haghkhah, Masoud
name: Ruocco, Luigi
name: Kawaji, Satoko
name: Momotani, Eiichi
name: Heuer, Cord
name: Solis Norton
name: Cadmus, Simeon
name: Agdestein, Angelika
name: Kampen, Annette
name: Szteyn, Joanna
name: Frössling, Jenny
name: Schwan, Ebba
name: Caldow, George
name: Strain, Sam
name: Carter, Mike
name: Wells, Scott
name: Musso Munyeme
name: Wolf, Robert
name: Gurung, Ratna
name: Cristobal Verdugo
name: Fourichon, Christine
name: Yamamoto, Takehisa
name: Sharada Thapaliya
name: Labio, Elena
name: Monaya Ekgatat
name: Gil, Andres
name: Alesandre, Alvaro
name: Piaggio, José
name: Suanes, Alejandra
name: Waard, Jacobus
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Table S1 to S14 ver 25–2-19 final. Tabulated results. (PDF 445 kb)
The Tamagawa number conjecture for CM elliptic curves
Creators: name: Kings, Guido
Publisher: name: arXiv
Year: 2000
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: In this paper we prove the Tamagawa number conjecture of Bloch and Kato for CM elliptic curves using a new explicit description of the specialization of the elliptic polylogarithm. The Tamagawa number conjecture describes the special values of the L-function of a CM elliptic curve in terms of the regulator maps of the K-theory of the variety into Deligne and etale cohomology. The regulator map to Deligne cohomology was computed by Deninger with the help of the Eisenstein symbol. For the Tamagawa number conjecture one needs an understanding of the $p$-adic regulator on the subspace of K-theory defined by the Eisenstein symbol. This is accomplished by giving a new explicit computation of the specialization of the elliptic polylogarithm sheaf. It turns out that this sheaf is an inverse limit of $p^r$-torsion points of a certain one-motive. The cohomology classes of the elliptic polylogarithm sheaf can then be described by classes of sections of certain line bundles. These sections are elliptic units and going carefully through the construction one finds an analog of the elliptic Soulé elements. Finally Rubin's ``main conjecture'' of Iwasawa theory is used to compare these elements with etale cohomology.
description: 60 pages, Latex2e
Untersuchung des Berliner IKT-Sektors vor dem Hintergrund des Varieties of Capitalism-Ansatzes
Creators: name: Kleinaltenkamp, Moritz
Publisher: name: Freie Universität Berlin
Year: 2015

description: Die Stadt Berlin eifert dem Ziel nach, sich neben Regionen wie dem Silicon Valley und der East London Tech City an die Spitze der internationalen Startup-Metropolen zu gesellen. Der Einschätzung von Branchenexperten sowie ökonomischen Kennzahlen zufolge ist sie in diesem Streben durchaus erfolgreich. Laut Hall & Soskice, den Autoren des Varieties of Capitalism- Ansatzes, sollte der ökonomische Erfolg technologischer Startups allerdings durch die Institutionen der deutschen Wirtschaft eingeschränkt werden. Die vorliegende Arbeit versucht, diesem Widerspruch von Theorie und Empirie auf den Grund zu gehen.
description: The city of Berlin aspires to join regions like Silicon Valley and the East London Tech City at the throne of international startup clusters. Following the assessment of industry experts and economic key figures, one could argue that Berlin has thus far been successful at achieving that goal. Hall & Soskice, authors of the Varieties of Capitalism approach, have argued however that the economic success of technological startups should be impeded by German economic institutions. The paper at hand tries to get to the bottom of this contradiction between theory and empirical evidence.
Collective flow and HBT radii from a full 3D hydrodynamic model with early chemical freeze out
Creators: name: Hirano, T.
name: Tsuda, K.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the effect of early chemical freeze-out on hydrodynamic flow and HBT radii at the RHIC energy with a genuinely three dimensional hydrodynamic model. It is found that the property of early chemical freeze out reduces radial flow, elliptic flow, R_out and R_long.
description: 4 pages, 3 figures, contribution to Quark Matter 2002, Nantes, France, July 18 - 24, 2002
Dynamics of a Nonlocal Kuramoto-Sivashinsky Equation
Creators: name: Duan, Jinqiao
name: Ervin, Vincent
Publisher: name: arXiv
Year: 1998
Subjects: subject: Dynamical Systems (math.DS)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 58F39

description: In this paper we study the effects of a ``nonlocal'' term on the global dynamics of the Kuramoto-Sivashinsky equation. We show that the equation possesses a ``family of maximal attractors'' parameterized by the mean value of the initial data. The dimension of the attractor is estimated as a function of the coefficient of the nonlocal term and the width of the periodic domain.
description: Latex file
Additional file 2: of Mutation profile of BBS genes in patients with Bardetâ Biedl syndrome: an Italian study
Creators: name: Manara, Elena
name: Paolacci, Stefano
name: DâEsposito, Fabiana
name: Abeshi, Andi
name: Ziccardi, Lucia
name: Falsini, Benedetto
name: Colombo, Leonardo
name: Iarossi, Giancarlo
name: Pilotta, Alba
name: Boccone, Loredana
name: Guerri, Giulia
name: Monica, Marica
name: Balzarini Marta
name: Maltese, Paolo
name: Buzzonetti, Luca
name: Rossetti, Luca
name: Bertelli, Matteo
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 60506 Virology

description: Mutation analysis. The DNA probe set was designed using specific Illumina DesignStudio online tool ( https://designstudio.illumina.com/ ). (DOCX 14 kb)
Parallel Integer Relation Detection: Techniques and Applications
Creators: name: Bailey, David H.
name: Broadhurst, David J.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Numerical Analysis (math.NA)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Let $\{x_1, x_2, ..., x_n\}$ be a vector of real numbers. An integer relation algorithm is a computational scheme to find the $n$ integers $a_k$, if they exist, such that $a_1 x_1 + a_2 x_2 + ... + a_n x_n= 0$. In the past few years, integer relation algorithms have been utilized to discover new results in mathematics and physics. Existing programs for this purpose require very large amounts of computer time, due in part to the requirement for multiprecision arithmetic, yet are poorly suited for parallel processing. This paper presents a new integer relation algorithm designed for parallel computer systems, but as a bonus it also gives superior results on single processor systems. Single- and multi-level implementations of this algorithm are described, together with performance results on a parallel computer system. Several applications of these programs are discussed, including some new results in number theory, quantum field theory and chaos theory.
description: 18 pages, LaTeX
The Rise and Fall of the King: The Correlation between FO Aquarii's Low States and the White Dwarf's Spindown
Creators: name: Littlefield, Colin
name: Garnavich, Peter
name: Kennedy, Mark R.
name: Patterson, Joseph
name: Kemp, Jonathan
name: Stiller, Robert A.
name: Hambsch, Franz-Josef
name: Heras, Teofilo Arranz
name: Myers, Gordon
name: Stone, Geoffrey
name: Sjoberg, George
name: Dvorak, Shawn
name: Nelson, Peter
name: Popov, Velimir
name: Bonnardeau, Michel
name: Vanmunster, Tonny
name: de Miguel, Enrique
name: Alton, Kevin B.
name: Harris, Barbara
name: Cook, Lewis M.
name: Graham, Keith A.
name: Brincat, Stephen M.
name: Lane, David J.
name: Foster, James
name: Pickard, Roger
name: Sabo, Richard
name: Vietje, Brad
name: Lemay, Damien
name: Briol, John
name: Krumm, Nathan
name: Dadighat, Michelle
name: Goff, William
name: Solomon, Rob
name: Padovan, Stefano
name: Bolt, Greg
name: Kardasis, Emmanuel
name: Debackere, Andre
name: Thrush, Jeff
name: Stein, William
name: Coulter, Daniel
name: Tsehmeystrenko, Valery
name: Gout, Jean-Francois
name: Lewin, Pablo
name: Galdies, Charles
name: Fernandez, David Cejudo
name: Walker, Gary
name: Boardman, James
name: Pellett, Emil
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The intermediate polar FO Aquarii (FO Aqr) experienced its first-reported low-accretion states in 2016, 2017, and 2018, and using newly available photographic plates, we identify pre-discovery low states in 1965, 1966, and 1974. The primary focus of our analysis, however, is an extensive set of time-series photometry obtained between 2002 and 2018, with particularly intensive coverage of the 2016-2018 low states. After computing an updated spin ephemeris for the white dwarf (WD), we show that its spin period began to increase in 2014 after having spent 27 years decreasing; no other intermediate polar has experienced a sign change of its period derivative, but FO Aqr has now done so twice. Our central finding is that the recent low states all occurred shortly after the WD began to spin down, even though no low states were reported in the preceding quarter-century, when it was spinning up. Additionally, the system's mode of accretion is extremely sensitive to the mass-transfer rate, with accretion being almost exclusively disk-fed when FO Aqr is brighter than V~14 and substantially stream-fed when it is not. Even in the low states, a grazing eclipse remains detectable, confirming the presence of a disk-like structure (but not necessarily a Keplerian accretion disk). We relate these various observations to theoretical predictions that during the low state, the system's accretion disk dissipates into a non-Keplerian ring of diamagnetic blobs. Finally, a new XMM-Newton observation from a high state in 2017 reveals an anomalously soft X-ray spectrum and diminished X-ray luminosity compared to pre-2016 observations.
description: Accepted for publication in ApJ
Continuous Time Analysis of Momentum Methods
Creators: name: Kovachki, Nikola B.
name: Stuart, Andrew M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Gradient descent-based optimization methods underpin the parameter training of neural networks, and hence comprise a significant component in the impressive test results found in a number of applications. Introducing stochasticity is key to their success in practical problems, and there is some understanding of the role of stochastic gradient descent in this context. Momentum modifications of gradient descent such as Polyak's Heavy Ball method (HB) and Nesterov's method of accelerated gradients (NAG), are also widely adopted. In this work our focus is on understanding the role of momentum in the training of neural networks, concentrating on the common situation in which the momentum contribution is fixed at each step of the algorithm. To expose the ideas simply we work in the deterministic setting. Our approach is to derive continuous time approximations of the discrete algorithms; these continuous time approximations provide insights into the mechanisms at play within the discrete algorithms. We prove three such approximations. Firstly we show that standard implementations of fixed momentum methods approximate a time-rescaled gradient descent flow, asymptotically as the learning rate shrinks to zero; this result does not distinguish momentum methods from pure gradient descent, in the limit of vanishing learning rate. We then proceed to prove two results aimed at understanding the observed practical advantages of fixed momentum methods over gradient descent. We achieve this by proving approximations to continuous time limits in which the small but fixed learning rate appears as a parameter. Furthermore in a third result we show that the momentum methods admit an exponentially attractive invariant manifold on which the dynamics reduces, approximately, to a gradient flow with respect to a modified loss function.
description: 40 pages, 7 figures