cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spectral gaps and mid-gap states in random quantum master equations
Creators: name: Can, Tankut
name: Oganesyan, Vadim
name: Orgad, Dror
name: Gopalakrishnan, Sarang
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss the decay rates of chaotic quantum systems coupled to noise. We model both the Hamiltonian and the system-noise coupling by random $N \times N$ Hermitian matrices, and study the spectral properties of the resulting Lindblad superoperator. We consider various random-matrix ensembles, and find that for all of them the asymptotic decay rate remains nonzero in the thermodynamic limit, i.e., the spectrum of the superoperator is gapped as $N \rightarrow \infty$. A sharp spectral transition takes place as the dissipation strength is increased: for weak dissipation, the non-zero eigenvalues of the master equation form a continuum; whereas for strong dissipation, the asymptotic decay rate is an \emph{isolated eigenvalue}, i.e., a `mid-gap state' that is sharply separated from the continuous spectrum of the master equation. For finite $N$, the probability of finding a very small gap vanishes algebraically with a scaling exponent that is extensive in system size, and depends only on the symmetry class of the random matrices and the number of independent decay channels. We comment on experimental implications of our results.
description: 5+13 pages, 14 figures
title: Tackling the Bus Turnaround Overhead in Real-Time SDRAM Controllers
Creators: name: Ecco, Leonardo
name: Ernst, Rolf
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2017
Subjects: subject: real-time and embedded systems, memory control and access, Dynamic random access memory (DRAM)
subject: 621.3

description: Synchronous dynamic random access memories (SDRAMs) are widely employed in multi- and many-core platforms due to
their high-density and low-cost. Nevertheless, their benefits come at the price of a complex two-stage access protocol, which reflects
their bank-based structure and an internal level of explicitly managed caching. In scenarios in which requestors demand real-time
guarantees, these features pose a predictability challenge and, in order to tackle it, several SDRAM controllers have been proposed. In
this context, recent research shows that a combination of bank privatization and open-row policy (exploiting the caching over the
boundary of a single request) represents an effective way to tackle the problem. However, such approach uncovered a new challenge:
the data bus turnaround overhead. In SDRAMs, a single data bus is shared by read and write operations. Alternating read and write
operations is, consequently, highly undesirable, as the data bus must remain idle during a turnaround. Therefore, in this article, we
propose a SDRAM controller that reorders read and write commands, which minimizes data bus turnarounds. Moreover, we compare
our approach analytically and experimentally with existing real-time SDRAM controllers both from the worst-case latency and power
consumption perspectives.
description: Publications Institute of Computer and Network Engineering
Dinopercidae Heemstra & Hecht 1986
Creators: name: Laan, Richard Van Der
name: Eschmeyer, William N.
name: Fricke, Ronald
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Dinopercidae

description: Family Dinopercidae Heemstra & Hecht 1986
Name in prevailing recent practice, Article 35.5
 Centrarchopsinae Fowler 1925:3 [ref. 1401] (subfamily) Centrarchops
 Dinopercidae Heemstra & Randall 1984:SERRAN 2 [ref. 32843] (family) Dinoperca [proposed conditionally, not available, see [ref. 5971]]
 Dinopercidae Heemstra & Hecht 1986:19 [ref. 5971] (family) Dinoperca [Dinopercidae used as valid by: Smith & Heemstra 1986 [ref. 5715], Nelson 1994 [ref. 26204], Randall 1995 [ref. 22896], Eschmeyer 1998 [ref. 23416], Heemstra & Heemstra 2004 [ref. 28072], 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 91, DOI: 10.11646/zootaxa.3882.1.1, http://zenodo.org/record/7047777
Additional file 1: of Religious affiliation and major depressive episode in older adults: a cross-sectional study in six low- and middle- income countries
Creators: name: FernĂĄndez-NiĂąo, Julian
name: Ietza Bojorquez
name: Becerra-Arias, Carolina
name: Astudillo-Garcia, Claudia
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Computational Biology

description: Table S1. Characteristics of participants by religious affiliation, SAGE round one. Table S2. Characteristics of participants by religious affiliation, SAGE round one. (DOCX 20 kb)
First-order nonthermal phase transition after preheating
Creators: name: Khlebnikov, S.
name: Kofman, L.
name: Linde, A.
name: Tkachev, I.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: During preheating after inflation, parametric resonance rapidly generates very large fluctuations of scalar fields. In models where the inflaton field $ϕ$ oscillates in a double-well potential and interacts with another scalar field $X$, fluctuations of X can keep the ϕto -ϕsymmetry temporarily restored. If the coupling of ϕto X is much stronger than the inflaton self-coupling, the subsequent symmetry breaking is a first-order phase transition. We demonstrate the existence of this nonthermal phase transition with lattice simulations of the full nonlinear dynamics of the interacting fields. In particular, we observe nucleation of an expanding bubble.
description: RevTeX, 4 pages
Relations: Agriculture – Economyin The Theory of Economics
Creators: name: Kowalczyk, Stanisław
name: Kwasek, Mariola
name: Kowalczyk, Stanisław
name: Kwasek, Mariola
Publisher: name: Unknown
Year: 2020
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: agriculture
subject: economy
subject: economic theory
subject: food consumption

description: The paper discusses the position of agriculture in the economy at various levels of economic development and in various schools of economic theory. The complexity of the analyzed area is a consequence of the fact that agriculture is one of the first forms of conscious and organized human activity. Its importance for society and economy results from the main goal of this activity, which is to satisfy the basic human need, the need to satisfy hunger. The study depicts three basic perspectives from which agriculture is presented in economic theory: (i) relations between agriculture and other sectors of the economy, (ii) the main forces shaping the mechanism of changes and the development of agriculture, and (iii) basic directions (paths) taking place in a time of changes in agriculture. In the second part of the paper, one of the three main perspectives illustrating the position of agriculture in the economy and in the theory of economics, i.e., the relations between agriculture and other sectors of the economy, was subject to empirical verification. The assessment was carried out on the example of Polish agriculture and its evolution over time. The analysis covers the changes that occurred after 1950 in areas such as the potential of agriculture in the economy (land, labor, and capital resources), the contribution of agriculture to creating added value (GNI/GDP), agricultural production, participation in foreign trade and changes in food consumption.
description: DOI: 10.30858/zer/128632
title: Exploiting Execution Dynamics in Timing Analysis Using Job Sequences
Creators: name: Leonie, Ahrendts
name: Quinton, Sophie
name: Ernst, Rolf
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2017
Subjects: subject: Embedded and cyber-physical systems, Real-time systems, Weakly hard real-time systems, Automotive systems, Safety, Timing analysis, Constraint specification
subject: 621.3

description: Worst case design as needed for critical systems usually resorts to established methods for worst case response time
analysis which rely on the worst case execution time of tasks and the minimum temporal distance between task activations. The result
is often very pessimistic when compared to the real worst case load. Many feasible designs are therefore rejected under such
analyses. Using worst case models based on job sequences rather than single jobs leads to less pessimistic results and makes worst
case design more practical. This paper outlines existing modeling and analysis techniques which are based on job sequences and
refers to several examples from automotive design where great benefits were demonstrated.
description: Publications Institute of Computer and Network Engineering
Do we need fine-tuning to create primordial black holes?
Creators: name: Nakama, Tomohiro
name: Wang, Yi
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently, the formation of primordial black holes (PBHs) from the collapse of primordial fluctuations has received much attention. The abundance of PBHs formed during radiation domination is sensitive to the tail of the probability distribution of primordial fluctuations. We quantify the level of fine-tuning due to this sensitivity. For example, if the main source of dark matter is PBHs with mass $10^{-12}M_\odot$, then anthropic reasoning suggests that the dark matter to baryon ratio should range between 1 and 300. For this to happen, the root-mean-square amplitude of the curvature perturbation has to be fine-tuned within a $7.1\%$ range. As another example, if the recently detected gravitational-wave events are to be explained by PBHs, the corresponding degree of fine-tuning is $3.8\%$. We also find, however, that these fine-tunings can be relaxed if the primordial fluctuations are highly non-Gaussian, or if the PBHs are formed during an early-matter-dominated phase. We also note that no fine-tuning is needed for the scenario of a reheating of the universe by evaporated PBHs with Planck-mass relics left to serve as dark matter.
description: 6 pages
title: Response-Time Analysis for Task Chains with Complex Precedence and Blocking Relations
Creators: name: Schlatow, Johannes
name: Ernst, Rolf
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2017
Subjects: subject: Computer systems organization
subject: Real-time systems
subject: Embedded and cyber-physical systems, response-time analysis, component-based software systems, serviceoriented architectures
subject: 621.3

description: For the development of complex software systems, we often resort to component-based approaches that separate the different concerns, enhance verifiability and reusability, and for which microkernel-based implementations are a good fit to enforce these concepts. Composing such a system of several interacting software components will, however, lead to complex precedence and blocking relations, which must be taken into account when performing latency analysis. When modelling these systems by classical task graphs, some of these effects are obfuscated and tend to render such an analysis either overly pessimistic or even optimistic.

We therefore firstly present a novel task (meta-)model that is more expressive and accurate w.r.t. these (functional) precedence and mutual blocking relations. Secondly, we apply the busy-window approach and formulate a modular response-time analysis on task-chain level suitable but not restricted to static-priority scheduled systems. We show that the conjunction of both concepts allows the calculation of reasonably tight latency bounds for scenarios not adequately covered by related work.
description: Publications Institute of Computer and Network Engineering
Hubble Space Telescope photometry of multiple stellar populations in the inner parts of NGC 2419
Creators: name: Larsen, S. S.
name: Baumgardt, H.
name: Bastian, N.
name: Hernandez, S.
name: Brodie, J. P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new deep imaging of the central regions of the remote globular cluster NGC 2419, obtained with the F343N and F336W filters of HST/WFC3. The new data are combined with archival imaging to constrain nitrogen and helium abundance variations within the cluster. We find a clearly bimodal distribution of the nitrogen-sensitive F336W-F343N colours of red giants, from which we estimate that about 55% of the giants belong to a population with about normal (field-like) nitrogen abundances (P1), while the remaining 45% belong to a nitrogen-rich population (P2). On average, the P2 stars are more He-rich than the P1 stars, with an estimated mean difference of Delta Y = 0.05, but the P2 stars exhibit a significant spread in He content and some may reach Delta Y = 0.13. A smaller He spread may be present also for the P1 stars. Additionally, stars with spectroscopically determined low [Mg/Fe] ratios ([Mg/Fe]<0) are generally associated with P2. We find the P2 stars to be slightly more centrally concentrated in NGC 2419 with a projected half-number radius of about 10% less than for the P1 stars, but the difference is not highly significant (p=0.05). We find evidence of rotation for the P1 stars, whereas the results are inconclusive for the P2 stars, which are consistent with no rotation as well as the same average rotation found for the P1 stars. Because of the long relaxation time scale of NGC 2419, the radial trends and kinematic properties of the populations are expected to be relatively unaffected by dynamical evolution. Hence, they provide constraints on formation scenarios for multiple populations, which must account not only for the presence of He spreads within sub-populations identified via CNO variations, but also for the relatively modest differences in the spatial distributions and kinematics of the populations.
description: 16 pages, 19 figures. Accepted for publication in A&A
title: Response Time Analysis for Sporadic Server based Budget Scheduling in Real Time Virtualization Environments
Creators: name: Beckert, Matthias
name: Ernst, Rolf
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2017
Subjects: subject: Computer systems organization, Real-time systems, Real-time operating systems, Real-time system architecture, RTOS, Virtualization, Hypervisor, Sporadic Server, Formal Analysis
subject: 621.3

description: Virtualization techniques for embedded real-time systems typically employ TDMA scheduling to achieve temporal isolation among different virtualized applications. Recent work already introduced sporadic server based solutions relying on budgets instead of a fixed TDMA schedule. While providing better average-case response times for IRQs and tasks, a formal response time analysis for the worst-case is still missing. In order to confirm the advantage of a sporadic server based budget scheduling, this paper provides a worst-case response time analysis. To improve the sporadic server based budget scheduling even more, we provide a background scheduling implementation which will also be covered by the formal analysis. We show correctness of the analysis approach and compare it against TDMA based systems. In addition to that, we provide response time measurements from a working hypervisor implementation on an ARM based development board.
description: Publications Institute of Computer and Network Engineering
Statistical mechanics and thermodynamics for multispecies exclusion statistics
Creators: name: Isakov, Serguei B.
name: Mashkevich, Stefan
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Statistical mechanics and thermodynamics for ideal fractional exclusion statistics with mutual statistical interactions is studied systematically. We discuss properties of the single-state partition functions and derive the general form of the cluster expansion. Assuming a certain scaling of the single-particle partition functions, relevant to systems of noninteracting particles with various dispersion laws, both in a box and in an external harmonic potential, we derive a unified form of the virial expansion. For the case of a symmetric statistics matrix at a constant density of states, the thermodynamics is analyzed completely. We solve the microscopic problem of multispecies anyons in the lowest Landau level for arbitrary values of particle charges and masses (but the same sign of charges). Based on this, we derive the equation of state which has the form implied by exclusion statistics, with the statistics matrix coinciding with the exchange statistics matrix of anyons. Relation to one-dimensional integrable models is discussed.
description: 19 pages, LATEX 2.09
Ostracoberycidae Fowler 1934
Creators: name: Laan, Richard Van Der
name: Eschmeyer, William N.
name: Fricke, Ronald
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Ostracoberycidae

description: Family Ostracoberycidae Fowler 1934
 Ostracoberycidae Fowler 1934a:351 [ref. 1416] (family) Ostracoberyx
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 93, DOI: 10.11646/zootaxa.3882.1.1, http://zenodo.org/record/7047777
Quantum noise-induced chaotic oscillations
Creators: name: Bag, Bidhan Chandra
name: Ray, Deb Shankar
Publisher: name: arXiv
Year: 1999
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We examine the weak quantum noise limit of Wigner equation for phase space distribution functions. It has been shown that the leading order quantum noise described in terms of an auxiliary Hamiltonian manifests itself as an additional fluctuational degree of freedom which may induce chaotic and regular oscillations in a nonlinear oscillator.
description: minor corrections, new references added
Optical excitation of single- and multi-mode magnetization precession in Galfenol nanolayers
Creators: name: Scherbakov, A. V.
name: Danilov, A. P.
name: Godejohann, F.
name: Linnik, T. L.
name: Glavin, B. A.
name: Shelukhin, L. A.
name: Pattnaik, D. P.
name: Wang, M.
name: Rushforth, A. W.
name: Yakovlev, D. R.
name: Akimov, A. V.
name: Bayer, M.
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: We demonstrate a variety of precessional responses of the magnetization to ultrafast optical excitation in nanolayers of Galfenol (Fe,Ga), which is a ferromagnetic material with large saturation magnetization and enhanced magnetostriction. The particular properties of Galfenol, including cubic magnetic anisotropy and weak damping, allow us to detect up to 6 magnon modes in a 120-nm layer, and a single mode with effective damping $α_{eff}$ = 0.005 and frequency up to 100 GHz in a 4-nm layer. This is the highest frequency observed to date in time-resolved experiments with metallic ferromagnets. We predict that detection of magnetization precession approaching THz frequencies should be possible with Galfenol nanolayers.
Nonlinear Damped Timoshenko Systems with Second Sound - Global Existence and Exponential Stability
Creators: name: Messaoudi, Salim A.
name: Pokojovy, Michael
name: Said-Houari, Belkacem
Publisher: name: arXiv
Year: 2018
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 5B37, 35L55, 74D05, 93D15, 93D20

description: In this paper, we consider nonlinear thermoelastic systems of Timoshenko type in a one-dimensional bounded domain. The system has two dissipative mechanisms being present in the equation for transverse displacement and rotation angle - a frictional damping and a dissipation through hyperbolic heat conduction modelled by Cattaneo's law, respectively. The global existence of small, smooth solutions and the exponential stability in linear and nonlinear cases are established.
description: 23 pages
Monokulare Visuelle Odometrie auf Multisensorplattformen für autonome Fahrzeuge
Creators: name: Gräter, Johannes
Publisher: name: KIT Scientific Publishing
Year: 2019
Subjects: Visuelle Odometrie
SLAM
LIDAR-Kamera-Fusion
Kalibrierung
Autonomes Fahren
visual odometry
LIDAR-camera-fusion
calibration
autonomous driving

description: In dieser Arbeit werden die Grenzen aktueller Odometrieschätzung mithilfe monokularer Kamerasysteme identifiziert und erweitert. Die Basis bildet der Bündelblockausgleich, für welchen Punkte in zeitlichem Bildsequenzen verfolgt werden. Hieraus wird sowohl die Kamerabewegung geschätzt als auch die Umgebungsstruktur rekonstruiert. Mithilfe eines LIDAR wird die Tiefeninformation zu den Kameradaten extrahiert und in das Optimierungsproblem integriert.
Global Spatiotemporal Order and Induced Stochastic Resonance due to a Locally Applied Signal
Creators: name: Samoletov, A.
name: Chaplain, M.
name: Levi, V.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We study the phenomenon of spatiotemporal stochastic resonance (STSR) in a chain of diffusively coupled bistable oscillators. In particular, we examine the situation in which the \textit{global} STSR response is controlled by a \textit{locally applied signal} and reveal a wave front propagation. In order to deepen the understanding of the system dynamics, we introduce, on the time scale of STSR, the study of the effective statistical renormalization of a generic lattice system. Using this technique we provide a new criterion for STSR, and predict and observe numerically a bifurcation-like behaviour that reflects the difference between the most probable value of the local quasi-equilibrium density and its mean value. Our results, tested with a chain of nonlinear oscillators, appear to possess some universal qualities and may stimulate a deeper search for more generic phenomena
description: 10 pages, 4 figures (REVTeX4)
The Evolution of The Agri-Food Sector in Terms of Economic Transformation, Membership in The EU and Globalization of The World Economy
Creators: name: Szajner, Piotr
name: Szczepaniak, Iwona
name: Szajner, Piotr
name: Szczepaniak, Iwona
Publisher: name: Unknown
Year: 2020
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: agriculture
subject: food industry
subject: market
subject: foreign trade
subject: food trends

description: The aim of the article is to contribute to the discussion and research devoted to the evolution of the agri-food sector in the period of systemic transformation, Poland’s membership in the European Union, and globalization of the world economy. The evolution of the Polish agri-food sector, which started in the first years of systemic transformation, intensified in the period of preparations for accession to the European Union (EU), and then stimulated by the processes of deepening economic and trade integration with the EU Member States and the global market, proves that this sector has undergone profound transformations. After joining the EU, the Polish food economy was co-financed with EU funds, which allowed for the acceleration of structural and modernization changes in the sector. Foreign direct investments also played a significant role in the process of strengthening the position of the Polish agri-food sector. However, the key factor in the sector’s development was the dynamic growth of agri-food exports, accompanied by the growing demand for food in the internal market. Due to changes in macroeconomic and market conditions, entities of the domestic agri-food sector will have to face new challenges in the future.
description: DOI: 10.30858/zer/128631
Centrogenyidae Fowler 1907
Creators: name: Laan, Richard Van Der
name: Eschmeyer, William N.
name: Fricke, Ronald
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Centrogenyidae

description: Family Centrogenyidae Fowler 1907
Name and spelling in prevailing recent practice, Article 40.2
 Myriodontoidei Bleeker 1859d:221 [ref. 371] (family) Myriodon [senior objective synonym of Centrogenyinae Fowler 1907; name not used as valid after 1899]
 Centrogeniinae [Centrogenyinae] Fowler 1907e:250 [ref. 1376] (subfamily) Centrogenys [according to Fowler Myriodon preoccupied, maybe he meant synonym?; stem changed to Centrogenys- by Weber & de Beaufort 1931:86 [ref. 16094]; stem corrected to Centrogeny- by Sheiko 2013:81 [ref. 32944]; Eschmeyer 1998:2477 [ref. 23416] and Nelson 2006:347 [ref. 32486] used as stem Centrogeni-; junior objective synonym of Myriodontoidei Bleeker 1859, but in prevailing recent practice]
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 93, DOI: 10.11646/zootaxa.3882.1.1, http://zenodo.org/record/7047777
Solitary wave excitations of skyrmion strings in chiral magnets
Creators: name: Kravchuk, Volodymyr P.
name: Rößler, Ulrich K.
name: Brink, Jeroen van den
name: Garst, Markus
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Chiral magnets possess topological line excitations where the magnetization within each cross section forms a skyrmion texture. We study analytically and numerically the low-energy, non-linear dynamics of such a skyrmion string in a field-polarized cubic chiral magnet, and we demonstrate that it supports solitary waves. Theses waves are in general non-reciprocal, i.e., their properties depend on the sign of their velocity $v$, but this non-reciprocity diminishes with decreasing $|v|$. An effective field-theoretical description of the solitary waves is derived that is valid in the limit $v \to 0$ and gives access to their profiles and their existence regime. Our analytical results are quantitatively confirmed with micromagnetic simulations for parameters appropriate for the chiral magnet FeGe. Similarities with solitary waves found in vortex filaments of fluids are pointed out.
description: 5 pages, 4 figures and supplementary information including 3 movies
Non-axisymmetric relativistic Bondi-Hoyle accretion onto a Schwarzschild black hole
Creators: name: Font, Jose A.
name: Ibanez, Jose M.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the results of an exhaustive numerical study of fully relativistic non-axisymmetric Bondi-Hoyle accretion onto a moving Schwarzschild black hole. We have solved the equations of general relativistic hydrodynamics with a high-resolution shock-capturing numerical scheme based on a linearized Riemann solver. The numerical code was previously used to study axisymmetric flow configurations past a Schwarzschild hole. We have analyzed and discussed the flow morphology for a sample of asymptotically high Mach number models. The results of this work reveal that initially asymptotic uniform flows always accrete onto the hole in a stationary way which closely resembles the previous axisymmetric patterns. This is in contrast with some Newtonian numerical studies where violent flip-flop instabilities were found. As discussed in the text, the reason can be found in the initial conditions used in the relativistic regime, as they can not exactly duplicate the previous Newtonian setups where the instability appeared. The dependence of the final solution with the inner boundary condition as well as with the grid resolution has also been studied. Finally, we have computed the accretion rates of mass and linear and angular momentum.
description: 21 pages, 13 figures, Latex, MNRAS (in press)
Derivative coupling of inflaton to $R^{(3)}$
Creators: name: He, Yan-Li
name: Piao, Yun-Song
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the inflation scenario with the non-minimally derivative coupling $XR^{(3)}$, where $X=\nabla_μϕ\nabla^μϕ$, $ϕ$ is the inflaton and $R^{(3)}$ is the 3-dimensional intrinsic Ricci scalar on the spacelike hypersurface, and analytically calculate the corrections of $XR^{(3)}$ on the power spectra of primordial perturbations. It is found that for the $ϕ^2$ inflation model, the corresponding predictions can be driven to the best-fit region of the $n_s$-$r$ diagram.
description: 14 pages, 3 figures
MOESM1 of Primary care engagement is associated with increased pharmacotherapy prescribing for alcohol use disorder (AUD)
Creators: name: Joudrey, Paul
name: Kladney, Mat
name: Chinazo Cunningham
name: Bachhuber, Marcus
Publisher: name: figshare
Year: 2019
Subjects: subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. Supplementary materials. Alcohol use disorder, psychiatric, seizure, and migraine diagnostic criteria used for this study and an explanation of predictive margins.
Effects of Spatial Curvature on the $f(R)$ Gravity Phase Space: no Inflationary Attractor?
Creators: name: Odintsov, S. D
name: Oikonomou, V. K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we study the effects of spatial curvature of the metric on the phase space of vacuum $f(R)$ gravity. Particularly, we appropriately choose the variables of the dynamical system, in order for this to be autonomous, and we study the phase space of the resulting theory, focusing on de Sitter, matter and radiation domination fixed points. Our analysis indicates that the effect of spatial curvature on the phase space is radical, since it destabilizes all the stable de Sitter vacua of the flat spacetime vacuum $f(R)$ gravity phase space, making the phase space having non-trivial unstable submanifolds. This instability occurs regardless if the spacetime has elliptic or hyperbolic spatial sections, and it is also robust towards the choice of initial conditions. We investigate the source of the instability in the system, and also we discuss the stability of the matter and radiation domination vacua, which, as we demonstrate, are also highly unstable. Our results for de Sitter attractors indicate that the stable de Sitter attractors of the vacuum $f(R)$ gravity theory for a flat Universe, are destabilized by the presence of curvature, and this shows that inflation for vacuum $f(R)$ gravity in non-flat spacetime is problematic, at least at the phase space level. This result holds true for both elliptic and hyperbolic spacetimes.
description: CQG Accepted
Interactions and Disorder in Multi-Channel Quantum Wires
Creators: name: Sandler, Nancy
name: Maslov, Dmitrii L.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent experiments have revealed that the temperature dependence of the conductance of quasi-ballistic quantum wires bears clear features of the Luttinger-liquid state. In this paper, the conductance of an N-channel quantum wire is calculated within the model of N coupled Luttinger liquids and under the assumption of weak disorder. It is shown that as the number of channels increases, a crossover from the Luttinger-liquid to the Fermi-liquid behavior occurs. This crossover manifests itself in the 1/N decrease of the scaling exponent of the temperature dependence. An exact expression for the scaling exponent for the case of N coupled Luttinger chains is obtained, and the large N limit is studied for the case of a quantum wire. The case of N=2 for electrons with spin is analyzed in detail, and a qualitative agreement with the experiment is achieved.
description: 9 pages, REVTex with 1 Postscript figure
Anisochrominae Smith 1954
Creators: name: Laan, Richard Van Der
name: Eschmeyer, William N.
name: Fricke, Ronald
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Pseudochromidae

description: Subfamily Anisochrominae Smith 1954
 Anisochromidae Smith 1954a:298 [ref. 4092] (family) Anisochromis
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 93, DOI: 10.11646/zootaxa.3882.1.1, http://zenodo.org/record/7047777
title: How to Tame the Tech Giants? Blockchain and the Future of the Internet Economy
Creators: name: Kranz, Johann
Publisher: name: Max Weber Stiftung
Year: 2019
Subjects: subject: 9

description: The internet was meant to be an open system with low barriers to entry and a level-playing field for entrepreneurs. Today, however, dominant platforms have generated a worrying backlash as extensive network effects, switching costs, and lock-in effects have led to the emergence of monopolistic structures in the internet economy. Sir Tim Berners-Lee, the inventor of the internet, stated that those platforms “are able to lock in their position by creating barriers for competitors. They acquire startup challengers, buy up new innovations and hire the industry’s top talent. Add to this the competitive advantage that their user data gives them and we can expect the next 20 years to be far less innovative than the last.” Currently, regulators across the globe are thinking about how regulation can mitigate the negative side-effects these dominant platforms have on innovation, competition, and societies. In my talk, I will focus on an emergent technological solution to these problems, decentralized internet apps enabled by blockchain technology. Data of decentralized apps is not stored on servers of a single firm, but on a network of computers which are unable to read the data as they are encrypted. In essence this means that users have control over their data and are able to easily switch between internet services. For the internet economy, decentralized apps may be a way to overcome the negative effects of dominant platforms. Johann Kranz heads the Professorship for Internet Business and Internet Services at the Ludwig-Maximilians-University Munich (LMU). He teaches and researches in the fields of internet economics, digital transformation and business models with a focus on blockchain and sustainability. His research appeared in Information Systems Journal, Energy Policy, Journal of Service Research and numerous other renowned outlets. Johann is an active member of various associations in which he engages in responsible digitalization.
description: Trafo Annual Conference - Knowledge and Society in Times of Upheaval
Strong mechanical squeezing in an unresolved-sideband optomechanical system
Creators: name: Zhang, Rong
name: Fang, Yinan
name: Wang, Yang-Yang
name: Chesi, Stefano
name: Wang, Ying-Dan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study how strong mechanical squeezing (beyond 3 dB) can be achieved through reservoir engineering in an optomechanical system which is far from the resolved-sideband regime. In our proposed setup, the effect of unwanted counter-rotating terms is suppressed by quantum interference from two auxiliary cavities. In the weak coupling regime we develop an analytical treatment based on the effective master equation approach, which allows us to obtain explicitly the condition of maximum squeezing.
A Rigorous Real Time Feynman Path Integral
Creators: name: Loo, Ken
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Using improper Riemann integrals, we will formulate a rigorous version of the real-time, time-sliced Feynman path integral for the $L^2$ transition probability amplitude. We will do this for nonvector potential Hamiltonians with potential which has at most a finite number of discontinuities and singularities. We will also provide a Nonstandard Analysis version of our formulation.
Unification of perturbation theory, RMT and semiclassical considerations in the study of parametrically-dependent eigenstates
Creators: name: Cohen, Doron
name: Heller, Eric J.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We consider a classically chaotic system that is described by an Hamiltonian $H(Q,P;x)$ where x is a constant parameter. Our main interest is in the case of a gas-particle inside a cavity, where $x$ controls a deformation of the boundary or the position of a `piston'. The quantum-eigenstates of the system are $|n(x)>$. We describe how the parametric kernel $P(n|m)=||^2$ evolves as a function of $δx = (x-x_0)$. We explore both the perturbative and the non-perturbative regimes, and discuss the capabilities and the limitations of semiclassical as well as of random-waves and random-matrix-theory (RMT) considerations.
description: 4 pages, 1 figure. Improved presentation. To be published in Phys. Rev. Lett
Conformal Gravity and the Radial Acceleration Relation
Creators: name: O'Brien, James G.
name: Chiarelli, Thomas L.
name: Falcone, Mark A.
name: AlQurashi, Muhannad H.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: During the 2016 International Workshop on Astronomy and Relativistic Astrophysics (IWARA), the question was raised as to if conformal gravity could explain the timely result of McGaugh et. al. 2016 which showed a universal nature found in the centripetal accelerations of spiral galaxies. At the time of the conference, the McGaugh result was only published for two weeks. Since then, the result has become known as the Radial Acceleration Relation (RAR) and has been considered tantamount to a natural law. In this work, we summarize how conformal gravity can explain the Radial Acceleration Rule in a fashion consistent with the findings of the original authors without the need for dark matter.
description: 5 pages, 5 figures. Submitted to Astronomische Nachrichten (AN), December 5, 2018
Additional file 1: of Clostridium difficile isolated from faecal samples in patients with ulcerative colitis
Creators: name: Shoaei, Parisa
name: Shojaei, Hasan
name: Jalali, Mohammad
name: Khorvash, Farzin
name: Hosseini, Sayed
name: Behrooz Ataei
name: Vakili, Bahareh
name: Ebrahimi, Fatemeh
name: Tavakoli, Hossein
name: Esfandiari, Zahra
name: J. Weese
Publisher: name: figshare
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Normalized dendrogram of the detected isolates of C.difficile, PCR- ribotyping fingerprints with the primers 16Sâ 23S. Similarity coefficients are included in the top bar; Dendrogram is color-coded according to sequence types (STs) and toxin types. The similarity was calculated using the Dice coefficient and UPGMA clustering. (DOCX 951 kb)
title: Planetary urbanization’s multiple frontiers: Viewed through security infrastructures of Yangon, Myanmar
Creators: name: Sidaway, James
Publisher: name: Max Weber Stiftung
Year: 2019
Subjects: subject: 9

description: This paper draws on Myanmar's largest city and commercial capital of Yangon, studying security infrastructures as a window on wider political and socio-economic dynamics. Narratives of Myanmar as an investment frontier have ushered in a host of private surveillance and security actors; in an atmosphere of business opportunity, urban surveillance and intricate relations between investors, public service providers and military procurement. Configuring this shifting landscape are Tatmadaw (Burmese military) generals, surveillance equipment manufacturers, security firms and state security agencies. In 2015, Singaporean funders organized the first ever international Security Expo in Yangon that attracted dozens of foreign security firms. Drawing on interviews with key investors and buyers in the security industry including at the Expo (which we also visited when it was restaged in 2018), and street-level observations in Yangon conducted over three years, we traverse structures of power, urban transformation and government-military-capital relations in a transitional Myanmar. The paper contextualizes these structures drawing on literatures on colonial cities and frontiers and reading these with developing debates about planetary urbanization. Yangon thereby becomes a site for critical reflections about complex and multiple imbrications of security, frontiers and urbanization with implications for how these may be conceptualized elsewhere. James D. Sidaway has served as a Professor of Political Geography at NUS since January 2012. Previously he was Professor of Political and Cultural Geography at the University of Amsterdam and prior to that a Professor of Human Geography at Plymouth University, UK. Sidaway studies the interactions of cities, development, geopolitics and states, influenced by a wide range of postcolonial writing and theory. His other main research interest is the history and philosophy of geography. Bringing all these together is an enduring fascination with the relationship between geography and a range of area studies traditions. Recently this has led him (with NUS colleague Chih Yuan Woon) to study the reception of China’s “Belt and Road” initiative. Since June 2017, Sidaway has been involved in a new Research Group on Borders, Mobility and New Infrastructures, supported by the Max Weber Foundation.
description: Trafo Annual Conference - Knowledge and Society in Times of Upheaval
Grammatidae Jordan 1887
Creators: name: Laan, Richard Van Der
name: Eschmeyer, William N.
name: Fricke, Ronald
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Grammatidae

description: Family Grammatidae Jordan 1887
 Grammidae Jordan 1887:582 [ref. 2388] (family) Gramma [stem emended to Grammat- by Steyskal 1980:173 [ref. 14191], confirmed by Nelson 1994:339 [ref. 26204] and by Nelson 2006:349 [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 93, DOI: 10.11646/zootaxa.3882.1.1, http://zenodo.org/record/7047777
title: Regaining Public Trust In Times Of Populism: Lessons from Ukraine
Creators: name: Gumenyuk, Nataliya
Publisher: name: Max Weber Stiftung
Year: 2019
Subjects: subject: 9

description: It’s 5 years since Ukrainian popular uprising called “Euromaidan' had started. Later it was followed by Russian aggression in Crimea and the East of the country. Ukraine had become a playground for disinformation, hybrid warfare while ‘fake news’ is something society had to live with since 2014. Despite the conflict and from the first sight different context the acute issues society is facing are very similar to those in Europe and the USA: growth of populism when anti-corruption fight is causing further disappointments, distrust to the institutions, polarisation and fragmentation of the audience, and urban-rural divide. What are the lessons from Ukraine, and what is done to regain trust and preserve civilized debated? Nataliya Gumenyuk is a Ukrainian journalist specializing in conflict reporting and foreign affairs. She is head of independent TV-channels Hromadske, a Ukrainian public broadcasting platform, and Hromadske International, which reaches both an English and Russian-speaking audience. Gumenyuk has reported from the field during the Euromaidan Revolution of 2013-14, the annexation of Crimea and the conflict in eastern Ukraine (Donbas).
description: Trafo Annual Conference - Knowledge and Society in Times of Upheaval
MOESM1 of Perspectives on treatment side effects in patients with metastatic gastrointestinal stromal tumour: a qualitative study
Creators: name: Fauske, Lena
name: Hompland, Ivar
name: Lorem, Geir
name: Bondevik, Hilde
name: ĂYvind Bruland
Publisher: name: figshare
Year: 2019
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 1. Interview schedule.
Orbital Stability of Earth Trojans
Creators: name: Zhou, Lei
name: Xu, Yang-Bo
name: Zhou, Li-Yong
name: Dvorak, Rudolf
name: Li, Jian
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The only discovery of Earth Trojan 2010 TK$_7$ and the subsequent launch of OSIRIS-REx motive us to investigate the stability around the triangular Lagrange points $L_4$ and $L_5$ of the Earth. In this paper we present detailed dynamical maps on the $(a_0,i_0)$ plane with the spectral number (SN) indicating the stability. Two main stability regions, separated by a chaotic region arising from the $ν_3$ and $ν_4$ secular resonances, are found at low ($i_0\leq 15^\circ$) and moderate ($24^\circ\leq {i_0}\leq 37^\circ$) inclinations respectively. The most stable orbits reside below $i_0=10^\circ$ and they can survive the age of the Solar System. The nodal secular resonance $ν_{13}$ could vary the inclinations from $0^\circ$ to $\sim 10^\circ$ according to their initial values while $ν_{14}$ could pump up the inclinations to $\sim 20^\circ$ and upwards. The fine structures in the dynamical maps are related to higher-degree secular resonances, of which different types dominate different areas. The dynamical behaviour of the tadpole and horseshoe orbits, reflected in their secular precession, show great differences in the frequency space. The secular resonances involving the tadpole orbits are more sensitive to the frequency drift of the inner planets, thus the instabilities could sweep across the phase space, leading to the clearance of tadpole orbits. We are more likely to find terrestrial companions on horseshoe orbits. The Yarkovsky effect could destabilize Earth Trojans in varying degrees. We numerically obtain the formula describing the stabilities affected by the Yarkovsky effect and find the asymmetry between the prograde and retrograde rotating Earth Trojans. The existence of small primordial Earth Trojans that avoid being detected but survive the Yarkovsky effect for 4.5\,Gyr is substantially ruled out.
description: 15 pages, 15 figures, to appear in A&A