cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the quadratic action of the Hawking-Turok instanton
Creators: name: Lavrelashvili, George
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Positive definiteness of the quadratic part of the action of the Hawking-Turok instanton is investigated. The Euclidean quadratic action for scalar perturbations is expressed in terms of a single gauge invariant quantity $q$. The mode functions satisfy a Schrödinger type equation with a potential $U$. It is shown that the potential $U$ tends to a positive constant at the regular end of the instanton. The detailed shape of $U$ depends on the initial data of the instanton, on parameters of the background scalar field potential $V$ and on a positive integer, $p$, labeling different spherical harmonics. For certain well behaved scalar field potentials it is proven analytically that for $p>1$ quadratic action is non-negative. For the lowest $p=1$ (homogeneous) harmonic numerical solution of the Schrödinger equation for different scalar field potentials $V$ and different initial data show that in some cases the potential $U$ is negative in the intermediate region. We investigated the monotonously growing potentials and a potential with a false vacuum. For the monotonous potentials no negative modes are found about the Hawking-Turok instanton. For a potential with the false vacuum the HT instanton is shown to have a negative mode for certain initial data.
description: 8 pages, REVTeX, 4 eps figures (included); statement concerning the CD solution is corrected and few other minor changes are made
On representation of the t-J model via spin-charge variables
Creators: name: Kochetov, Evgueni
name: Yarunin, Vladimir
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We show that the t-J Hamiltonian is not in general reduced to H(S,f), where S and f stand for independent ([S,f]=0) SU(2) (spin) generators and spinless fermionic (hole) field, respectively. The proof is based upon an identification of the Hubbard operators with the generators of the su(2|1) superalgebra in the degenerate fundamental representation and ensuing SU(2|1) path integral representation of the partition function.
description: 15 pages, latex, no figures
Negotiations En Vogue
Creators: name: Andras, Sonia
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 470212
subject: Multicultural, intercultural and cross-cultural studies

description: This paper explores Romanian women’s influence on US fashion, as representatives of European artistic, cultural and social elites and as genuine Parisiennes. This study treats the Parisienne model as a symbolic marker of elegance driven by French, namely Parisian, aesthetic philosophies and technical prowess. In this sense, Romanian women function as liminal agents of influence and scrutiny, in-between local, regional, continental and worldwide ethnic, cultural, social, ideological and religious identities. The research focuses on primary visual and textual materials published in the original American edition of Vogue, based in New York. These sources, including fashion and news reports, photographs, illustrations, and full-length articles are analyzed in the context of Romanian-American cultural and aesthetic negotiations, using an informed disciplinary methodology focusing on fashion studies and discourse analysis of written and visual texts. Interwar Romanian women’s impact on European and American fashion remains a largely unexplored topic. This paper aims to open a new field of enquiry, adding fashion studies in the media to the diversity of topics regarding Romanian-American cultural and artistic negotiations.Key Words: fashion icons, women, interwar era, American Vogue, USA, Romania
Pseudocyttinae Tyler, O'Toole & Winterbottom 2003
Creators: name: Laan, Richard Van Der
name: Eschmeyer, William N.
name: Fricke, Ronald
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Zeiformes
Oreosomatidae

description: Subfamily Pseudocyttinae Tyler, O’Toole & Winterbottom 2003
 Pseudocyttinae Tyler, O’Toole & Winterbottom 2003:35, 38, 44 [ref. 26742] (subfamily) Pseudocyttus
description: Published as part of Laan, Richard Van Der, Eschmeyer, William N. & Fricke, Ronald, 2014, Family-group names of Recent fishes, pp. 1-230 in Zootaxa 3882 (2) on page 79, DOI: 10.11646/zootaxa.3882.1.1, http://zenodo.org/record/7047777
Massive dual gauge field and confinement in Minkowski space : Electric charge
Creators: name: Sawayanagi, Hirohumi
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: SU(2) gauge theory in the nonlinear gauge of the Curci-Ferrari type is studied in low-energy region. We give a classical solution that connects color electric charges. Its dual solution, which has a configuration of monopole, is also presented. Due to the gluon condensation subsequent to the ghost condensation, these classical fields become massive. The massive Lagrangian with the classical solution and that with the dual solution are derived. We show that these Lagrangians produce a linear potential between a quark and an antiquark. This is the mechanism of quark confinement that is different from the magnetic monopole condensation.
description: To appear in Progress of Theoretical and Experimental Physics
Additional file 2: of A high-fat diet induces rapid changes in the mouse hypothalamic proteome
Creators: name: McLean, Fiona
name: Campbell, Fiona
name: Langston, Rosamund
name: Sergi, Domenico
name: Cibell Resch
name: Grant, Christine
name: Morris, Amanda
name: Mayer, Claus
name: Williams, Lynda
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Figure S1. Representative 2D Coomassie stained gel of mouse hypothalamic proteins after 3 days on the HFD. Precision Blue Protein Standards (Bio-Rad) are shown as indicated. Numbered spots indicate those with significantly different average normalised volumes (P
ZSS: Zipper logic revisited
Creators: name: Buliga, Marius
Publisher: name: figshare
Year: 2021
Subjects: subject: Computation Theory and Mathematics
subject: FOS: Computer and information sciences
subject: 10107 Mathematical Logic, Set Theory, Lattices and Universal Algebra
subject: FOS: Mathematics

description: Can we compute with tangles and Reidemeister moves? I explain where this problem comes from, why it is different than the usual way of using tangles in computation and then I propose the Zip-Slip-Smash (ZSS) graph rewriting system, which is an improvement of zipper logic arXiv:1405.6095, and prove that it allows universal computation using tangles and zippers, via directed Interaction Combinators.
Setarchidae Matsubara 1943
Creators: name: Laan, Richard Van Der
name: Eschmeyer, William N.
name: Fricke, Ronald
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Scorpaeniformes
Setarchidae

description: Family Setarchidae Matsubara 1943
Name in prevailing recent practice, Article 35.5
 Scorpaenellinae Fowler 1938a:51 [ref. 1426] (subfamily) Scorpaenella
 Setarchinae Matsubara 1943:359 [ref. 2905] (subfamily) Setarches [family-group name used as valid by: Smith 1957b [ref. 12168], Eschmeyer & Collette 1966 [ref. 6485], Nelson 1976 [ref. 32838], Nelson 1984 [ref. 13596], Nelson 1994 [ref. 26204], Eschmeyer 1998 [ref. 23416], Imamura 2004 [ref. 29602], Last, Yearsley & Motomura 2005 [ref. 28323], Hoese et al. 2006, Jin 2006, Nelson 2006 [ref. 32486]]
description: Published as part of Laan, Richard Van Der, Eschmeyer, William N. & Fricke, Ronald, 2014, Family-group names of Recent fishes, pp. 1-230 in Zootaxa 3882 (2) on page 83, DOI: 10.11646/zootaxa.3882.1.1, http://zenodo.org/record/7047777
Computing the merger of black-hole binaries: the IBBH problem
Creators: name: Brady, Patrick R.
name: Creighton, Jolien D. E.
name: Thorne, Kip S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational radiation arising from the inspiral and merger of binary black holes (BBH's) is a promising candidate for detection by kilometer-scale interferometric gravitational wave observatories. This paper discusses a serious obstacle to searches for such radiation and to the interpretation of any observed waves: the inability of current computational techniques to evolve a BBH through its last ~10 orbits of inspiral (~100 radians of gravitational-wave phase). A new set of numerical-relativity techniques is proposed for solving this ``Intermediate Binary Black Hole'' (IBBH) problem: (i) numerical evolutions performed in coordinates co-rotating with the BBH, in which the metric coefficients evolve on the long timescale of inspiral, and (ii) techniques for mathematically freezing out gravitational degrees of freedom that are not excited by the waves.
description: 6 pages RevTeX
title: Braunschweigische Anzeigen 82. Jahr 1826
Creators: name: :None
Publisher: name: Herzogliche Waisenhaus-Buchdruckerei
Year: 1826
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Braunschweigische Anzeigen
subject: 902

description: Braunschweigische Anzeigen: offizielles Regierungs- und Anzeigeblatt, vol. 82. 1826
Extracting many-particle entanglement entropy from observables using supervised machine learning
Creators: name: Berkovits, Richard
Publisher: name: arXiv
Year: 2018
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement, which quantifies non-local correlations in quantum mechanics, is the fascinating concept behind much of aspiration towards quantum technologies. Nevertheless, directly measuring the entanglement of a many-particle system is very challenging. Here we show that via supervised machine learning using a convolutional neural network, we can infer the entanglement from a measurable observable for a disordered interacting quantum many-particle system. Several structures of neural networks were tested and a convolutional neural network akin to structures used for image and speech recognition performed the best. After training on a set of 500 realizations of disorder, the network was applied to 200 new realizations and its results for the entanglement entropy were compared to a direct computation of the entanglement entropy. Excellent agreement was found, except for several rare region which in a previous study were identified as belonging to an inclusion of a Griffiths-like quantum phase. Training the network on a test set with different parameters (in the same phase) also works quite well.
Survival Forests under Test: Impact of the Proportional Hazards Assumption on Prognostic and Predictive Forests for ALS Survival
Creators: name: Korepanova, Natalia
name: Seibold, Heidi
name: Steffen, Verena
name: Hothorn, Torsten
Publisher: name: arXiv
Year: 2019
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We investigate the effect of the proportional hazards assumption on prognostic and predictive models of the survival time of patients suffering from amyotrophic lateral sclerosis (ALS). We theoretically compare the underlying model formulations of several variants of survival forests and implementations thereof, including random forests for survival, conditional inference forests, Ranger, and survival forests with $L_1$ splitting, with two novel variants, namely distributional and transformation survival forests. Theoretical considerations explain the low power of log-rank-based splitting in detecting patterns in non-proportional hazards situations in survival trees and corresponding forests. This limitation can potentially be overcome by the alternative split procedures suggested herein. We empirically investigated this effect using simulation experiments and a re-analysis of the PRO-ACT database of ALS survival, giving special emphasis to both prognostic and predictive models.
Bounds on the period of the continued fraction after a Möbius transformation
Creators: name: Řada, Hanka
name: Starosta, Štěpán
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11Y65, 11A55

description: We study Möbius transformations (also known as linear fractional transformations) of quadratic numbers. We construct explicit upper and lower bounds on the period of the continued fraction expansion of a transformed number as a function of the period of the continued fraction expansion of the original number. We provide examples that show that the bound is sharp.
description: 42 pages
MOESM2 of Dual prognostic role of 2-oxoglutarate-dependent oxygenases in ten cancer types: implications for cell cycle regulation and cell adhesion maintenance
Creators: name: Chang, Wai
name: Donall Forde
name: Lai, Alvina
Publisher: name: figshare
Year: 2019
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Computational Biology

description: Additional file 2. List of 61 2OG-dependent oxygenases.
The Quantum Hall Effect: Unified Scaling Theory and Quasi-particles at the Edge
Creators: name: Pruisken, A. M. M.
name: Schoutens, K.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We address two fundamental issues in the physics of the quantum Hall effect: a unified description of scaling behavior of conductances in the integral and fractional regimes, and a quasi-particle formulation of the chiral Luttinger Liquids that describe the dynamics of edge excitations in the fractional regime.
description: 11 pages, LateX, 2 figures (not included, available from the authors), to be published in Proceedings of the International Summer School on Strongly Correlated Electron Systems, Lajos Kossuth University, Debrecen, Hungary, Sept 1996
title: Can the Conventions of Indigenous Kunqu Opera Training be Useful for the Contemporary Actor?
Creators: name: Xiang, Yunlin
Publisher: name: Goldsmiths, University of London
Year: 2019

description: The ancient Chinese theatre system was described in Xian Qing Ou Ji by Li Yu (1611-1680), and can be translated as ‘Speaking honestly, if an actor wants to perform a role, it means that the actor speaks instead of the, so the actor has to put their heart into the role to be real during the performance. Actors need to be in the scene personally and there should be true feeling in it.’ The meaning of this is that when an actor is performing, the actor should convey their emotions to the audience and must put their whole heart into the character’s background to show their imagination on the stage, this is also an important theory by Stanislavski. From ancient theatre theory to contemporary theatre theory, and from Chinese theatre to the European theatre, both imagination and physical techniques are crucial to performance. The purpose of this study is to research how Kunqu opera’s performance convention and formula also may improve actors’ performance techniques. Chinese has a three-character phrase, ‘jing qi shen’, meaning essence, energy, spirit in English. Originating from Chapter 67 of the Dao De Jing by Lao Zi, it has various interpretations in different fields. In this study, this phrase relates to the training of skills that can help actors in providing skilled performances. This research process has included filming a documentary about Suzhou Kunju Theatre and Hengdian Film Studio, interviewing scholars and actors. There was one experimental study workshop with students for two weeks to test techniques in the Goldsmiths University of London studio. Actors’ skills relate to their imagination and physical movement. The results show that the research has enriched existing universal performance training methods and the significance of this study proves the physical training benefits of Kunqu opera. The workshop integrated Chinese theatre and European theatre practice for further expansion and development.
Chiral plasmonic nanocrystals for generation of hot electrons: towards polarization-sensitive photochemistry
Creators: name: Liu, Tianji
name: Besteiro, Lucas V.
name: Liedl, Tim
name: Correa-Duarte, Miguel A.
name: Wang, Zhiming
name: Govorov, Alexander
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The use of biomaterials - with techniques such as DNA-directed assembly or bio-directed synthesis - can surpass top-down fabrication techniques in creating plasmonic superstructures, in terms of spatial resolution, range of functionality and fabrication speed. Particularly, by enabling a very precise placement of nanoparticles in a bio-assembled complex or a controlled bio-directed shaping of single nanoparticles, plasmonic nanocrystals can show remarkably strong circular dichroism (CD) signals. Here we show that chiral bio-plasmonic assemblies and nanocrystals can enable polarization-sensitive photochemistry based on the generation of energetic (hot) electrons. It is now established that hot plasmonic electrons can induce surface photochemistry or even reshape plasmonic nanocrystals. Here we show that merging chiral plasmonic nanocrystal systems and the hot-election generation effect offers unique possibilities in photochemistry - such as polarization-sensitive photochemistry promoting nonchiral molecular reactions, chiral photo-induced growth of a colloid at the atomic level and chiral photochemical destruction of chiral nanocrystals. Regarding practical applications, our study suggests interesting opportunities in polarization-sensitive photochemistry, chiral recognition or separation, and in promoting chiral crystal growth at the nanoscale.
GPU acceleration of an iterative scheme for gas-kinetic model equations with memory reduction techniques
Creators: name: Zhu, Lianhua
name: Wang, Peng
name: Chen, Songze
name: Guo, Zhaoli
name: Zhang, Yonghao
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: 76P05

description: This paper presents a Graphics Processing Units (GPUs) acceleration method of an iterative scheme for gas-kinetic model equations. Unlike the previous GPU parallelization of explicit kinetic schemes, this work features a fast converging iterative scheme. The memory reduction techniques in this method enable full three-dimensional (3D) solution of kinetic model equations in contemporary GPUs usually with a limited memory capacity that otherwise would need terabytes of memory. The GPU algorithm is validated against the DSMC simulation of the 3D lid-driven cavity flow and the supersonic rarefied gas flow past a cube with grids size up to 0.7 trillion points in the phase space. The performance of the GPU algorithm is assessed by comparing with the corresponding parallel CPU program using Message Passing Interface (MPI). The profiling on several models of GPUs shows that the algorithm has a medium to high level of utilization of the GPUs' computing and memory resources. A $190\times$ speedup can be achieved on the Tesla K40 GPUs against a single core of Intel Xeon-E5-2680v3 CPU for the 3D lid-driven cavity flow.
description: 21 pages, submitted to Computer Physics Communication
Normanichthyidae Clark 1937
Creators: name: Laan, Richard Van Der
name: Eschmeyer, William N.
name: Fricke, Ronald
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Scorpaeniformes
Normanichthyidae

description: Family Normanichthyidae Clark 1937
 Normanichthyidae Clark 1937:90 [ref. 840] (family) Normanichthys
description: Published as part of Laan, Richard Van Der, Eschmeyer, William N. & Fricke, Ronald, 2014, Family-group names of Recent fishes, pp. 1-230 in Zootaxa 3882 (2) on page 87, DOI: 10.11646/zootaxa.3882.1.1, http://zenodo.org/record/7047777
A review of emerging models in Canadian academic publishing
Creators: name: Shearer, Kathleen
Publisher: name: The University of British Columbia
Year: 2016

description: This report presents the result of an environmental scan of the Canadian academic publishing landscape undertaken in January-February 2010 on behalf of the University of British Columbia Library. The purpose of the scan was to identify new models of peer-review scholarly publishing in Canada, with a particular focus on open access and library-publisher collaborations. The methodology involved a review of the literature and interviews with stakeholders in the Canadian academic publishing community.
Slow manifolds for a nonlocal fast-slow stochastic evolutionary system with stable Levy noise
Creators: name: Zulfiqar, Hina
name: Yuan, Shenglan
name: He, Ziying
name: Duan, Jinqiao
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This work aims at understanding the slow dynamics of a nonlocal fast-slow stochastic evolutionary system with stable Levy noise. Slow manifolds along with exponential tracking property for a nonlocal fast-slow stochastic evolutionary system with stable Levy noise are constructed and two examples with numerical simulations are presented to illustrate the results.
Minimal order controllers for output regulation of nonlinear systems
Creators: name: Natarajan, Vivek
name: Weiss, George
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper is about the nonlinear local error feedback regulator problem. The plant is a nonlinear finite-dimensional system with a single control input and a single output and it is locally exponentially stable around the origin. The plant is driven, via a separate disturbance input, by a Lyapunov stable exosystem whose states are nonwandering. The reference signal that the plant output must track is a nonlinear function of the exosystem state. The local error feedback regulator problem is to design a dynamic feedback controller, with the tracking error as its input, such that (i) the closed-loop system of the plant and the controller is locally exponentially stable, and (ii) the tracking error tends to zero for all sufficiently small initial conditions of the plant, the controller and the exosystem. Under the assumption that the above regulator problem is solvable, we propose a nonlinear controller whose order is relatively small - typically equal to the order of the exosystem, and which solves the regulator problem. The emphasis is on the low order of the controller. The stability assumption on the plant (which can be relaxed to some extent) is crucial for making it possible to design a low order controller. We will show, under certain assumptions, that our proposed controller is of minimal order. Three examples are presented - the first illustrates our controller design procedure using an exosystem whose trajectories are periodic even though the state operator of the linearized exosystem contains a nontrivial Jordan block. The second example is more involved, and shows that sometimes a nontrivial immersion of the exosystem is needed in the design. The third example, based on output voltage regulation for a boost power converter, shows how the regulator equations may reduce to a first order PDE with no given boundary conditions, but which nevertheless has a locally unique solution.
description: 33 pages, 6 figures
IDMoB: IoT Data Marketplace on Blockchain
Creators: name: Özyılmaz, Kazım Rıfat
name: Doğan, Mehmet
name: Yurdakul, Arda
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Today, Internet of Things (IoT) devices are the powerhouse of data generation with their ever-increasing numbers and widespread penetration. Similarly, artificial intelligence (AI) and machine learning (ML) solutions are getting integrated to all kinds of services, making products significantly more "smarter". The centerpiece of these technologies is "data". IoT device vendors should be able keep up with the increased throughput and come up with new business models. On the other hand, AI/ML solutions will produce better results if training data is diverse and plentiful. In this paper, we propose a blockchain-based, decentralized and trustless data marketplace where IoT device vendors and AI/ML solution providers may interact and collaborate. By facilitating a transparent data exchange platform, access to consented data will be democratized and the variety of services targeting end-users will increase. Proposed data marketplace is implemented as a smart contract on Ethereum blockchain and Swarm is used as the distributed storage platform.
description: Presented at Crypto Valley Conference on Blockchain Technology (CVCBT 2018), 20-22 June 2018 - published version may differ
Pushing Back the Limit of Ab-initio Quantum Transport Simulations on Hybrid Supercomputers
Creators: name: Calderara, Mauro
name: Brueck, Sascha
name: Pedersen, Andreas
name: Bani-Hashemian, Mohammad H.
name: VandeVondele, Joost
name: Luisier, Mathieu
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The capabilities of CP2K, a density-functional theory package and OMEN, a nano-device simulator, are combined to study transport phenomena from first-principles in unprecedentedly large nanostructures. Based on the Hamiltonian and overlap matrices generated by CP2K for a given system, OMEN solves the Schroedinger equation with open boundary conditions (OBCs) for all possible electron momenta and energies. To accelerate this core operation a robust algorithm called SplitSolve has been developed. It allows to simultaneously treat the OBCs on CPUs and the Schroedinger equation on GPUs, taking advantage of hybrid nodes. Our key achievements on the Cray-XK7 Titan are (i) a reduction in time-to-solution by more than one order of magnitude as compared to standard methods, enabling the simulation of structures with more than 50000 atoms, (ii) a parallel efficiency of 97% when scaling from 756 up to 18564 nodes, and (iii) a sustained performance of 15 DP-PFlop/s.
Truncations of random unitary matrices
Creators: name: Zyczkowski, Karol
name: Sommers, Hans-Juergen
Publisher: name: arXiv
Year: 1999
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We analyze properties of non-hermitian matrices of size M constructed as square submatrices of unitary (orthogonal) random matrices of size N>M, distributed according to the Haar measure. In this way we define ensembles of random matrices and study the statistical properties of the spectrum located inside the unit circle. In the limit of large matrices, this ensemble is characterized by the ratio M/N. For the truncated CUE we derive analytically the joint density of eigenvalues from which easily all correlation functions are obtained. For N-M fixed and N--> infinity the universal resonance-width distribution with N-M open channels is recovered.
description: 9 pages in RevTex with 7 pictures in .ps (included) version 3, some misprints corrected
Charge symmetry violation in the determination of strangeness form factors
Creators: name: Alkathiri, Ali
name: Young, Ross D.
name: Zanotti, James M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The strange quark contributions to the electromagnetic form factors of the proton are ideal quantities to study the role of hidden flavor in the properties of the proton. This has motivated intense experimental measurements of these form factors. A major remaining source of systematic uncertainty in these determinations is the assumption that charge symmetry violation (CSV) is negligible. We use recent theoretical determinations of the CSV form factors and reanalyse the available parity-violating electron scattering data, up to $Q^2$ $\sim$ 1 GeV$^2$. Our analysis considers systematic expansions of the strangeness electric and magnetic form factors of the proton. The results provide an update to the determination of strangeness over a range of $Q^2$ where, under certain assumptions about the effective axial form factor, an emergence of non-zero strangeness is revealed in the vicinity of $Q^2$ $\sim$ 0.6 GeV$^2$. Given the recent theoretical calculations, it is found that the current limits on CSV do not have a significant impact on the interpretation of the measurements and hence suggests an opportunity for a next generation of parity-violating measurements to more precisely map the distribution of strange quarks.
description: 9 pages, 5 figures, 4 tables
title: Torsionsversuche an Plattenbalken
Creators: name: Eibl, Josef
name: Iványi, György
Publisher: name: Institut für Baustoffkunde und Stahlbetonbau IBMB
Year: 1972
Subjects: subject: Forschungsbericht, IBMB
subject: Stahlbeton
subject: 620

description: Berücksichtigung der Torsionssteifigkeit von Randbalken bei Stahlbetondecken: Bericht zum Forschungsvorhaben, vol. 4
Additional file 1: of A high-fat diet induces rapid changes in the mouse hypothalamic proteome
Creators: name: McLean, Fiona
name: Campbell, Fiona
name: Langston, Rosamund
name: Sergi, Domenico
name: Cibell Resch
name: Grant, Christine
name: Morris, Amanda
name: Mayer, Claus
name: Williams, Lynda
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology

description: Table S1. Composition of the semi-purified diets used in the study (DOCX 15 kb)
The Point-Agape survey: 4 high signal-to-noise ratio microlensing candidates detected towards M31
Creators: name: Paulin-Henriksson, S.
name: Baillon, P.
name: Bouquet, A.
name: Carr, B. J.
name: Creze, M.
name: Evans, N. W.
name: Giraud-Heraud, Y.
name: Gould, A.
name: Hewett, P.
name: Kaplan, J.
name: Kerins, E.
name: Du, Y. Le
name: Melchior, A. -L.
name: Smartt, S. J.
name: Valls-Gabaud, D.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have carried out a survey of the Andromeda galaxy for unresolved microlensing (pixel lensing). We present a subset of four short timescale, high signal-to-noise microlensing candidates found by imposing severe selection criteria: the source flux variation exceeds the flux of an R=21 magnitude star and the full width at half maximum timescale is less than 25 days. Remarkably, in three out of four cases, we have been able to measure or strongly constrain the Einstein crossing time of the event. One event, which lies projected on the M31 bulge, is almost certainly due to a stellar lens in the bulge of M31. The other three candidates can be explained either by stars in M31 and M32 or by MACHOs.
Quantum corrections to critical phenomena in gravitational collapse
Creators: name: Brady, Patrick R
name: Ottewill, Adrian C
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate conformally coupled quantum matter fields on spherically symmetric, continuously self-similar backgrounds. By exploiting the symmetry associated with the self-similarity the general structure of the renormalized quantum stress-energy tensor can be derived. As an immediate application we consider a combination of classical, and quantum perturbations about exactly critical collapse. Generalizing the standard argument which explains the scaling law for black hole mass, $M \propto |η-η^*|^β$, we demonstrate the existence of a quantum mass gap when the classical critical exponent satisfies $β\geq 0.5$. When $β< 0.5$ our argument is inconclusive; the semi-classical approximation breaks down in the spacetime region of interest.
description: RevTeX, 6 pages, 3 figures included using psfig
Bounded cohomology of subgroups of mapping class groups
Creators: name: Bestvina, Mladen
name: Fujiwara, Koji
Publisher: name: arXiv
Year: 2000
Subjects: subject: Geometric Topology (math.GT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 57M07, 57N05, 57M99

description: We show that every subgroup of the mapping class group MCG(S) of a compact surface S is either virtually abelian or it has infinite dimensional second bounded cohomology. As an application, we give another proof of the Farb-Kaimanovich-Masur rigidity theorem that states that MCG(S) does not contain a higher rank lattice as a subgroup.
description: Published by Geometry and Topology at http://www.maths.warwick.ac.uk/gt/GTVol6/paper4.abs.html
Cothurnia maritima Ehrenberg 1838
Creators: name: Sergeeva, Nelli
name: Dovgal, Igor
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Kinetofragminophora
Suctorida
Urnulidae
Cothurnia
Cothurnia maritima

description: Cothurnia maritima Ehrenberg, 1838
(Fig. 1-2)
 Diagnosis. Loricate, stalked peritrich ciliate. Lorica much longer than wide, occasionally with irregular ridges and furrows. The external stalk is relatively long; the short and broad endostyle is also present, mesostyle absent. Macronucleus straight. Marine species, attached to different substrates.
It should be mentioned that in our materials the individuals with furrows of lorica neither were observed.
 Measurements (in µm): lorica height 39-48 (35-56 after Warren and Paynter 1991), width 29-42 (28-33 after Warren and Paynter 1991); external stalk length 8-19 (10-15 after Warren and Paynter 1991); endostyle length 4-11, width 6-11.
description: Published as part of Sergeeva, Nelli & Dovgal, Igor, 2014, First finding of epibiont peritrich and suctorian ciliates (Ciliophora) on oligochaetes and harpacticoid copepods from the deep-water hypoxic / anoxic conditions of the Black Sea, pp. 49-54 in Ecologica Montenegrina 1 (1) on page 51, DOI: 10.37828/em.2014.1.7, http://zenodo.org/record/10662222
title: Berechnung von Plattenbalken mit Hilfe der Methode "Finiter Elemente"
Creators: name: Eibl, Josef
name: Iványi, György
Publisher: name: Institut für Baustoffkunde und Stahlbetonbau IBMB
Year: 1972
Subjects: subject: Forschungsbericht, IBMB
subject: Stahlbeton
subject: 620

description: Berücksichtigung der Torsionssteifigkeit von Randbalken bei Stahlbetondecken: Bericht zum Forschungsvorhaben, vol. 3
Bathylutichthyidae Balushkin & Voskoboynikova 1990
Creators: name: Laan, Richard Van Der
name: Eschmeyer, William N.
name: Fricke, Ronald
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Scorpaeniformes
Bathylutichthyidae

description: Family Bathylutichthyidae Balushkin & Voskoboynikova 1990
 Bathylutichthyidae Balushkin & Voskoboynikova 1990:185, 186 [ref. 20117] (family) Bathylutichthys
description: Published as part of Laan, Richard Van Der, Eschmeyer, William N. & Fricke, Ronald, 2014, Family-group names of Recent fishes, pp. 1-230 in Zootaxa 3882 (2) on page 87, DOI: 10.11646/zootaxa.3882.1.1, http://zenodo.org/record/7047777
Imaging Carrier Inhomogeneities in Ambipolar Tellurene Field Effect Transistors
Creators: name: Berweger, Samuel
name: Qiu, Gang
name: Wang, Yixiu
name: Pollard, Benjamin
name: Genter, Kristen L.
name: Tyrell-Ead, Robert
name: Wallis, T. Mitch
name: Wu, Wenzhuo
name: Ye, Peide D.
name: Kabos, Pavel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Developing van der Waals (vdW) homojunction devices requires materials with narrow bandgaps and simultaneously high hole and electron mobilities for bipolar transport, as well as methods to image and study spatial variations in carrier type and associated conductivity with nanometer spatial resolution. Here we demonstrate the general capability of near-field scanning microwave microscopy (SMM) to image and study the local carrier type and associated conductivity in operando by studying ambiploar field effect transistors (FETs) of the 1D vdW material tellurium in 2D form. To quantitatively understand electronic variations across the device, we produce nanometer resolved maps of the local carrier equivalence backgate voltage. We show that the global device conductivity minimum determined from transport measurements does not arise from uniform carrier neutrality, but rather from the continued coexistence of p-type regions at the device edge and n-type regions in the interior of our micron-scale devices. This work both underscores and addresses the need to image and understand spatial variations in the electronic properties of nanoscale devices.
description: 15 pages, 4 figures
title: Level Up: Live Performance and Collective Creativity in Grime Music
Creators: name: de Lacey, Alex
Publisher: name: Goldsmiths, University of London
Year: 2024

description: Grime music has been central to British youth culture since the beginning of the 21st century. It is an Afrodiasporic form that developed on street corners, on pirate radio and at raves. An emergent body of academic and popular literature has concentrated on the music’s socio-political contexts. However, there has to date been no extended study of the form’s performance techniques and values. This thesis intends to enrich musical understandings of grime, and approaches to the study of (popular) music more broadly. It makes an original contribution to knowledge in three ways: 1) by providing the first exploration of the ways MCs and DJs perform in the live domain, and theorising the creative workings of improvisation and interaction in demanding performance environments; 2) through offering the first musicological ethnography of the form, allowing for rich documentation of practitioner perspectives and performance data; 3) by demonstrating how its very performance environments, principally pirate radio, inflect upon and influence creative practice. These advances are facilitated by my long-standing role as a DJ within the London grime scene Entitled Level Up, this thesis constructs a framework for the performance of grime music. The resultant model offers new ways to conceptualise emergent improvisatory practice within ensembles, across the spectrum of creative arts. It opens with a critique of incipient histories of the form, before outlining grime’s performance conventions. Three of the music’s most fundamental interactional processes are explored—the reload, the rally and the through ball—with respect to their multidirectionality and collaborative character. A study of its radio network from 2016–18 follows, demonstrating how its interrelatedness stimulates creativity and incubates group practice. It concludes with a study of collective social learning in two grime crews: Shellyvnne and Over The Edge.
Spectroscopic observations of the candidate sgB[e]/X-ray binary CI Cam
Creators: name: Hynes, R. I.
name: Clark, J. S.
name: Barsukova, E. A.
name: Callanan, P. J.
name: Charles, P. A.
name: Cameron, A. Collier
name: Fabrika, S. N.
name: Garcia, M. R.
name: Haswell, C. A.
name: Horne, Keith
name: Miroshnichenko, A.
name: Negueruela, I.
name: Reig, P.
name: Welsh, W. F.
name: Witherick, D. K.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a compilation of spectroscopic observations of the sgB[e] star CI Cam. This includes data from before, during, and after its 1998 outburst. The object shows a rich emission line spectrum originating from circumstellar material, rendering it difficult to determine the nature of either star involved or the cause of the outburst. We collate pre-outburst data to determine the state of the system before this occurred and provide a baseline for comparison with later data. During the outburst all lines become stronger, and hydrogen and helium lines become significantly broader and asymmetric. After the outburst, spectral changes persist for at least three years, with FeII and [NII] lines still a factor of ~2 above the pre-outburst level and HeI, HeII, and NII lines suppressed by a factor of 2-10. We find that the spectral properties of CI Cam are similar to other sgB[e] stars and therefore suggest that the geometry of the circumstellar material is similar to that proposed for the other objects: a two component outflow, with a fast, hot, rarefied polar wind indistinguishable from that of a normal supergiant and a dense, cooler equatorial outflow with a much lower velocity. We suggest that CI Cam is among the hotter members of the class and is viewed nearly pole-on. The nature of the compact object and the mechanism for the outburst remain uncertain, although it is likely that the compact object is a black hole or neutron star, and that the outburst was precipitated by its passage through the equatorial material. We suggest that this prompted a burst of supercritical accretion resulting in ejection of much of the material, which was later seen as an expanding radio remnant. [Abbreviated]
description: 25 pages including figures. Accepted for publication in A&A
Kick and fix: the roots of quantum control
Creators: name: Facchi, Paolo
name: Pascazio, Saverio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: When two operators $A$ and $B$ do not commute, the calculation of the exponential operator $e^{A+B}$ is a difficult and crucial problem. The applications are vast and diversified: to name but a few examples, quantum evolutions, product formulas, quantum control, Zeno effect. The latter are of great interest in quantum applications and quantum technologies. We present here a historical survey of results and techniques, and discuss differences and similarities. We also highlight the link with the strong coupling regime, via the adiabatic theorem, and contend that the "pulsed" and "continuous" formulations differ only in the order by which two limits are taken, and are but two faces of the same coin.
description: 6 pages
title: Cocycles, radicals and splitting fields of twisted group algebras
Creators: name: Opolka, Hans
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2018
Subjects: subject: cocycles, splitting fields of algebras
subject: 512

description: The purpose of this note is to construct a splitting field of a twisted group algebra of a finite group over a field of characteristic zero by using certain radicals.
Quantifying and predicting success in show business
Creators: name: Williams, Oliver E.
name: Lacasa, Lucas
name: Latora, Vito
Publisher: name: arXiv
Year: 2019
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Recent studies in the science of success have shown that the highest-impact works of scientists or artists happen randomly and uniformly over the individual's career. Yet in certain artistic endeavours, such as acting in films and TV, having a job is perhaps the most important achievement: success is simply making a living. By analysing a large online database of information related to films and television we are able to study the success of those working in the entertainment industry. We first support our initial claim, finding that two in three actors are "one-hit wonders". In addition we find that, in agreement with previous works, activity is clustered in hot streaks, and the percentage of careers where individuals are active is unpredictable. However, we also discover that productivity in show business has a range of distinctive features, which are predictable. We unveil the presence of a rich-get-richer mechanism underlying the assignment of jobs, with a Zipf law emerging for total productivity. We find that productivity tends to be highest at the beginning of a career and that the location of the "annus mirabilis" -- the most productive year of an actor -- can indeed be predicted. Based on these stylized signatures we then develop a machine learning method which predicts, with up to 85% accuracy, whether the annus mirabilis of an actor has yet passed or if better days are still to come. Finally, our analysis is performed on both actors and actresses separately, and we reveal measurable and statistically significant differences between these two groups across different metrics, thereby providing compelling evidence of gender bias in show business.
description: 6 Figures
Optimizations of the Eigensolvers in the ELPA Library
Creators: name: Kus, P.
name: Marek, A.
name: Koecher, S. S.
name: Kowalski, H. -H.
name: Carbogno, C.
name: Scheurer, Ch.
name: Reuter, K.
name: Scheffler, M.
name: Lederer, H.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mathematical Software (cs.MS)
subject: FOS: Computer and information sciences

description: The solution of (generalized) eigenvalue problems for symmetric or Hermitian matrices is a common subtask of many numerical calculations in electronic structure theory or materials science. Solving the eigenvalue problem can easily amount to a sizeable fraction of the whole numerical calculation. For researchers in the field of computational materials science, an efficient and scalable solution of the eigenvalue problem is thus of major importance. The ELPA-library is a well-established dense direct eigenvalue solver library, which has proven to be very efficient and scalable up to very large core counts. In this paper, we describe the latest optimizations of the ELPA-library for new HPC architectures of the Intel Skylake processor family with an AVX-512 SIMD instruction set, or for HPC systems accelerated with recent GPUs. We also describe a complete redesign of the API in a modern modular way, which, apart from a much simpler and more flexible usability, leads to a new path to access system-specific performance optimizations. In order to ensure optimal performance for a particular scientific setting or a specific HPC system, the new API allows the user to influence in straightforward way the internal details of the algorithms and of performance-critical parameters used in the ELPA-library. On top of that, we introduced an autotuning functionality, which allows for finding the best settings in a self-contained automated way. In situations where many eigenvalue problems with similar settings have to be solved consecutively, the autotuning process of the ELPA-library can be done "on-the-fly". Practical applications from materials science which rely on so-called self-consistency iterations can profit from the autotuning. On some examples of scientific interest, simulated with the FHI-aims application, the advantages of the latest optimizations of the ELPA-library are demonstrated.