cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ion Charge States in Halo CMEs: What can we Learn about the Explosion?
Creators: name: Rakowski, Cara E.
name: Laming, J. Martin
name: Lepri, Susan T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe a new modeling approach to develop a more quantitative understanding of the charge state distributions of the ions of various elements detected in situ during halo Coronal Mass Ejection (CME) events by the Advanced Composition Explorer (ACE) satellite. Using a model CME hydrodynamic evolution based on observations of CMEs propagating in the plane of the sky and on theoretical models, we integrate time dependent equations for the ionization balance of various elements to compare with ACE data. We find that plasma in the CME ``core'' typically requires further heating following filament eruption, with thermal energy input similar to the kinetic energy input. This extra heating is presumably the result of post eruptive reconnection. Plasma corresponding to the CME ``cavity'' is usually not further ionized, since whether heated or not, the low density gives freeze-in close the the Sun. The current analysis is limited by ambiguities in the underlying model CME evolution. Such methods are likely to reach their full potential when applied to data to be acquired by STEREO when at optimum separation. CME evolution observed with one spacecraft may be used to interpret CME charge states detected by the other.
description: 20 pages, accepted by ApJ
Weak and strong coupling limits of the two-dimensional Fröhlich polaron with spin-orbit Rashba interaction
Creators: name: Grimaldi, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The continuous progress in fabricating low-dimensional systems with large spin-orbit couplings has reached a point in which nowadays materials may display spin-orbit splitting energies ranging from a few to hundreds of meV. This situation calls for a better understanding of the interplay between the spin-orbit coupling and other interactions ubiquitously present in solids, in particular when the spin-orbit splitting is comparable in magnitude with characteristic energy scales such as the Fermi energy and the phonon frequency. In this article, the two-dimensional Fröhlich electron-phonon problem is reformulated by introducing the coupling to a spin-orbit Rashba potential, allowing for a description of the spin-orbit effects on the electron-phonon interaction. The ground state of the resulting Fröhlich-Rashba polaron is studied in the weak and strong coupling limits of the electron-phonon interaction for arbitrary values of the spin-orbit splitting. The weak coupling case is studied within the Rayleigh-Schrödinger perturbation theory, while the strong-coupling electron-phonon regime is investigated by means of variational polaron wave functions in the adiabatic limit. It is found that, for both weak and strong coupling polarons, the ground state energy is systematically lowered by the spin-orbit interaction, indicating that the polaronic character is strengthened by the Rashba coupling. It is also shown that, consistently with the lowering of the ground state, the polaron effective mass is enhanced compared to the zero spin-orbit limit. Finally, it is argued that the crossover between weakly and strongly coupled polarons can be shifted by the spin-orbit interaction.
description: 11 pages, 5 figures
LOLAS: an optical turbulence profiler in the atmospheric boundary layer with extreme altitude-resolution
Creators: name: Avila, R.
name: Aviles, J. L.
name: Wilson, R. W.
name: Chun, M.
name: Butterley, T.
name: Carrasco, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the development and first results of an instrument called Low Layer Scidar (LOLAS) which is aimed at the measurement of optical-turbulence profiles in the atmospheric boundary layer with high altitude-resolution. The method is based on the Generalized Scidar (GS) concept, but unlike the GS instruments which need a 1- m or larger telescope, LOLAS is implemented on a dedicated 40-cm telescope, making it an independent instrument. The system is designed for widely separated double-star targets, which enables the high altitude-resolution. Using a 20000-separation double- star, we have obtained turbulence profiles with unprecedented 12-m resolution. The system incorporates necessary novel algorithms for autoguiding, autofocus and image stabilisation. The results presented here were obtained at Mauna Kea Observatory. They show LOLAS capabilities but cannot be considered as representative of the site. A forthcoming paper will be devoted to the site characterisation. The instrument was built as part of the Ground Layer Turbulence Monitoring Campaign on Mauna Kea for Gemini Observatory.
description: 7 pages, 9 figures, in press in MNRAS
Proceedings Combined 28th International Workshop on Expressiveness in Concurrency and 18th Workshop on Structural Operational Semantics
Creators: name: Dardha, Ornela
name: Castiglioni, Valentina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: This volume contains the proceedings of EXPRESS/SOS 2021: the Combined 28th International Workshop on Expressiveness in Concurrency and the 18th Workshop on Structural Operational Semantics, which was held online, as an affiliated workshop of CONCUR 2021, the 32nd International Conference on Concurrency Theory. The EXPRESS/SOS workshop series aims at bringing together researchers interested in the formal semantics of systems and programming concepts, and in the expressiveness of computational models.
Riemann geometry in theory of the first order systems of equations
Creators: name: Dryuma, Valery
Publisher: name: arXiv
Year: 2008
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Theory of Riemann Extensions of the spaces with constant affine connection for the studying of the properties of nonlinear the first order systems of differential equations is proposed. Quadratic planar system of equations and the Lorenz system of equations are investigated in detail.
description: This report was presented at the International Conference "Differential Equations and Topology", Moskow, June 17-22, 2008
Integrating PETs into Software Applications: A Game-Based Learning Approach
Creators: name: Boteju, Maisha
name: Ranbaduge, Thilina
name: Vatsalan, Dinusha
name: Arachchilage, Nalin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The absence of data protection measures in software applications leads to data breaches, threatening end-user privacy and causing instabilities in organisations that developed those software. Privacy Enhancing Technologies (PETs) emerge as promising safeguards against data breaches. PETs minimise threats to personal data while enabling software to extract valuable insights from them. However, software developers often lack the adequate knowledge and awareness to develop PETs integrated software. This issue is exacerbated by insufficient PETs related learning approaches customised for software developers. Therefore, we propose "PETs-101", a novel game-based learning framework that motivates developers to integrate PETs into software. By doing so, it aims to improve developers' privacy-preserving software development behaviour rather than simply delivering the learning content on PETs. In future, the proposed framework will be empirically investigated and used as a foundation for developing an educational gaming intervention that trains developers to put PETs into practice.
description: 10
Fock representation of the renormalized higher powers of white noise and the Virasoro--Zamolodchikov--$w_{\infty} *$--Lie algebra
Creators: name: Accardi, Luigi
name: Boukas, Andreas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 60H40, 81S05, 81T30, 81T40

description: The identification of the $*$--Lie algebra of the renormalized higher powers of white noise (RHPWN) and the analytic continuation of the second quantized Virasoro--Zamolodchikov--$w_{\infty} *$--Lie algebra of conformal field theory and high-energy physics, was recently established in \cite{id} based on results obtained in [1] and [2]. In the present paper we show how the RHPWN Fock kernels must be truncated in order to be positive definite and we obtain a Fock representation of the two algebras. We show that the truncated renormalized higher powers of white noise (TRHPWN) Fock spaces of order $\geq 2$ host the continuous binomial and beta processes.
The irradiated ISM of ULIRGs
Creators: name: Spaans, M.
name: Meijerink, R.
name: Israel, F. P.
name: Loenen, A. F.
name: Baan, W. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The nuclei of ULIRGs harbor massive young stars, an accreting central black hole, or both. Results are presented for molecular gas that is exposed to X-rays (1-100 keV, XDRs) and far-ultraviolet radiation (6-13.6 eV, PDRs). Attention is paid to species like HCO+, HCN, HNC, OH, H2O and CO. Line ratios of HCN/HCO+ and HNC/HCN discriminate between PDRs and XDRs. Very high J (>10) CO lines, observable with HIFI/Herschel, discriminate very well between XDRs and PDRs. In XDRs, it is easy to produce large abundances of warm (T>100 K) H2O and OH. In PDRs, only OH is produced similarly well.
description: 5 pages, 6 figures, to appear in: IAU Symposium 242 Astrophysical Masers and their Environments
A proposito di un recente volume sull’epica omerica. Alberto Camerotto, Fare gli eroi. Le storie, le imprese, le virtù: composizione e racconto nell’epica greca arcaica. Padova. Il Poligrafo. 2009 (Ricerche; 54). pp. 260.
Creators: name: Iannuci, Alessandro
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Annali Online  Lettere - Ferrara, V 1 (2010)
Dittmar Dahlmann u.a. (Hrsg.), Überall ist der Ball rund. Zur Geschichte und Gegenwart des Fußballs in Ost- und Südosteuropa. Nachspielzeit
Creators: name: Wiederkehr, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 1 (2013)
Changes in protein phosphorylation during changes in vascular smooth muscle tone
Creators: name: Marshall, Caroline Louise
Publisher: name: University of British Columbia
Year: 2010

description: It is now generally accepted that changes in protein phosphorylation play an important role in mediating smooth muscle tone. An attempt was made to determine whether nitrogen oxide containing vasodilators such as sodium nitroprusside and nitroglycerin exert their relaxant effect via a phosphorylation reaction. Isoelectric focusing was initially used as a method of detecting phosphorylation. However, due to the smaller percentage of protein in smooth muscle with a relative increase in other cell constituents, crude smooth muscle homogenates were deemed to be too complex for analysis by this technique alone. Phosphorylation changes are commonly studied by incubating the muscle in labelled inorganic phosphate, thus labelling the ATP pools. Proteins are separated by SDS-polyacrylamide gel electrophoresis. Following staining and drying, gels are exposed to X-ray film and phosphorylation levels determined. By comparing aortic strips relaxed in Ca⁺⁺-free, 5 mM EGTA Krebs with muscle strips contracted in K⁺ (124 mM) Krebs, a significant difference between the phosphorylation levels of myosin light chain was quantitated. By reproducing this well documented phenomena, we demonstrated that we had established a working methodology in the laboratory. In view of the controversy in the literature concerning sustained levels of myosin light chain phosphorylation during sustained K⁺-induced contractions, a K⁺-time course study was performed. Levels of myosin light chain phosphorylation increased significantly within the first 2 min of contraction and were maintained for 12 min, though a non-significant decrease was observed after 2 min. Tension peaked at 4 min and thereafter remained constant. Finally, the effect of nitroglycerin (10⁻M) on K⁺-induced contractions was briefly examined. Nitroglycerin caused a 70% relaxation within 2 min and significantly decreased myosin light chain phosphorylation levels. There also appeared to be an increase in phosphorylation of a 160kD protein with nitroglycerin treatment, which due to technical difficulties could not be quantitated.
Sabine Egger, John McDonagh (Hrsg.), Polish-Irish Encounters in the Old and New Europe
Creators: name: Wippermann, Wolfgang
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2012

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 61 Nr. 3 (2012)
Eero Medijainen, Olaf Mertelsmann (Hrsg.), Border Changes in 20th Century Europe. Selected Case Studies
Creators: name: Laba, Agnes
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 1 (2013)
Risk-sensitive Optimization for Robust Quantum Controls
Creators: name: Ge, Xiaozhen
name: Wu, Re-Bing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Highly accurate and robust control of quantum operations is vital for the realization of error-correctible quantum computation. In this paper, we show that the robustness of high-precision controls can be remarkably enhanced through sampling-based stochastic optimization of a risk-sensitive loss function. Following the stochastic gradient-descent direction of this loss function, the optimization is guided to penalize poor-performance uncertainty samples in a tunable manner. We propose two algorithms, which are termed as the risk-sensitive GRAPE and the adaptive risk-sensitive GRAPE. Their effectiveness is demonstrated by numerical simulations, which is shown to be able to achieve high control robustness while maintaining high fidelity.
description: 7 pages, 5 figures
The variable super-orbital modulation of Cygnus X-1
Creators: name: Rico, Javier
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the super-orbital modulation present in the Cygnus X-1 X-ray data, usually attributed to the precession of the accretion disk and relativistic jets. We find a new, strong, 326+-2 d period modulation starting in 2005, in Swift/BAT and RXTE/ASM light curves (LCs). We also investigate Vela5B/ASM and ArielV/ASM archival data and confirm the previously reported ~290 d periodic modulation, and therefore confirming that the super-orbital period is not constant. Finally, we study RXTE/ASM LC before 2005 and find that the previously reported ~150 d period is most likely an artifact due to the use of a Fourier-power based analysis under the assumption that the modulation has a constant period along the whole data sample. Instead, we find strong indications of several discrete changes of the precession period, happening in coincidence with soft and failed state-transition episodes. We also find a hint of correlation between the period and the amplitude of the modulation. The detection of gamma-rays above 100 GeV with MAGIC in September 2006 happened in coincidence with a maximum of the super-orbital modulation. The next maximum will happen between 2 and 14 of July 2008, when the observational conditions of Cygnus X-1 with ground-based Cherenkov telescopes, such as MAGIC and VERITAS, are optimal.
description: 4 pages, 4 figures, 2 tables. Submitted to ApJ
Anja Wilhelmi (Hrsg.), Bildungskonzepte und Bildungsinitiativen in Nordosteuropa (19. Jahrhundert)
Creators: name: Tammiksaar, Erki
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2012

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 61 Nr. 3 (2012)
Strings ending on branes from supergravity
Creators: name: Lunin, Oleg
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study geometries produced by brane intersections preserving eight supercharges. Typical examples of such configurations are given by fundamental strings ending on Dp branes and we construct gravity solutions describing such intersections. The geometry is specified in terms of two functions obeying coupled differential equations and the boundary conditions are determined by distributions of D branes. We show that a consistency of type IIB supergravity constrains the allowed positions of the branes. The shapes of branes derived from gravity are found to be in a perfect agreement with profiles predicted by the DBI analysis. We also discuss related 1/4-BPS systems in M theory.
description: 81 pages, added refs
Agnieszka Łuczak, Utracone decorum. Grabież dóbr kultury z majątków ziemiaństwa polskiego w Wielkopolsce w czasie okupacji niemieckiej w latach 1939-1945
Creators: name: Mycio, Andrzej
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 1 (2014): Grenzen und Räume. Neue Forschungen und Forschungsimpulse
Michał Łuczewski, Jutta Wiedmann (Hrsg.), Erinnerungskultur des 20. Jahrhunderts. Analysen deutscher und polnischer Erinnerungsorte
Creators: name: Stokłosa, Katarzyna
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 1 (2013)
Hourglass Magnetic Field from a Survey of Current Density Profiles
Creators: name: Bino, Gianfranco
name: Basu, Shantanu
name: Sharkawi, Mahmoud
name: Das, Indrani
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Modelling the magnetic field in prestellar cores can serve as a useful tool for studying the initial conditions of star formation. The analytic hourglass model of Ewertowski and Basu (2013) provides a means to fit observed polarimetry measurements and extract useful information. The original model does not specify any radial distribution of the electric current density. Here, we perform a survey of possible centrally-peaked radial distributions of the current density, and numerically derive the full hourglass patterns. Since the vertical distribution is also specified in the original model, we can study the effect of different ratios of vertical to radial scale length on the overall hourglass pattern. Different values of this ratio may correspond to different formation scenarios for prestellar cores. We demonstrate the flexibility of our model and how it can be applied to a variety of magnetic field patterns.
description: 14 pages, 6 figures
Large non-Gaussianity from multi-brid inflation
Creators: name: Naruko, Atsushi
name: Sasaki, Misao
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A model of multi-component hybrid inflation, dubbed multi-brid inflation, in which various observable quantities including the non-Gaussianity parameter f_{NL} can be analytically calculated was proposed recently. In particular, for a two-brid inflation model with an exponential potential and the condition that the end of inflation is an ellipse in the field space, it was found that, while keeping the other observational quantities within the range consistent with observations, large non-Gaussianity is possible for certain inflationary trajectories, provided that the ratio of the two masses is large. One might question whether the resulting large non-Gaussianity is specific to this particular form of the potential and the condition for the end of inflation. In this paper, we consider a model of multi-brid inflation with a potential given by an exponential function of terms quadratic in the scalar field components. We also consider a more general class of ellipses for the end of inflation than those studied previously. Then, focusing on the case of two-brid inflation, we find that large non-Gaussianity is possible in the present model even for the equal-mass case. Then by tuning the model parameters, we find that there exist models for which both the non-Gaussianity and the tensor-to-scalar ratio are large enough to be detected in the very near future.
description: 13 pages, 3 figures; Typos corrected, references and one figure added
Lukáš Fasora u.a. (Hrsg.), Secularization and the Working Class. The Czech Lands and Central Europe in the 19th Century
Creators: name: Mennen, Kristian
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2012

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 61 Nr. 3 (2012)
Prediction of Self-Assembled Dewetted Nanostructures for Photonics Applications via a Continuum Mechanics Framework
Creators: name: Martin-Monier, Louis
name: Ledda, Pier Giuseppe
name: Piveteau, Pierre-Luc
name: Gallaire, Francois
name: Sorin, Fabien
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: When a liquid film lies on a non-wettable substrate, the configuration is unstable and the film then retracts from a solid substrate to form droplets. This phenomenon, known as dewetting, commonly leads to undesirable morphological changes. Nevertheless, recent works have demonstrated the possibility to harness dewetting by employing templated substrates with a degree of precision on par with advanced lithographic processes for high-performance nanophotonic applications. Since resonant behavior is highly sensitive to geometrical changes, predicting quantitatively dewetting dynamics is of high interest. In this work, we develop a continuum model that predicts the evolution of a thin film on a patterned substrate, from the initial reflow to the nucleation and growth of holes. We provide an operative framework based on macroscopic measurements to model the intermolecular interactions at the origin of the dewetting process, involving length scales that span from sub-nanometer to micron range. A comparison of experimental and simulated results shows that the model can accurately predict the final distributions, thereby offering novel predictive tools to tailor the optical response of dewetted nanostructures.
description: 19 pages, 7 figures
K-Scaffold subgraphs of Complex networks
Creators: name: Corominas-Murtra, Bernat
name: Valverde, Sergi
name: Rodríguez-Caso, Carlos
name: Solé, Ricard V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Complex networks with high numbers of nodes or links are often difficult to analyse. However, not all elements contribute equally to their structural patterns. A small number of elements (the hubs) seem to play a particularly relevant role in organizing the overall structure around them. But other parts of the architecture (such as hub-hub connecting elements) are also important. In this letter we present a new type of substructure, to be named the $K$-scaffold subgraph, able to capture all the essential network components. Their key features, including the so called critical scaffold graph, are analytically derived.
description: 5 pages, 3 figures. Published in EuroPhysics Letters 2007 EPL 77 18004, doi
Blueshifted hydrogen emission and shock wave of RR Lyrae variables in SDSS and LAMOST
Creators: name: Duan, Xiao-Wei
name: Chen, Xiaodian
name: Sun, Weijia
name: Deng, Licai
name: Zhang, Huawei
name: Yang, Fan
name: Liu, Chao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Hydrogen emissions of RR Lyrae variables are the imprints of shock waves traveling through their atmospheres. We develop a pattern recognition algorithm, which is then applied to single-epoch spectra of SDSS and LAMOST. These two spectroscopic surveys covered $\sim$ 10,000 photometrically confirmed RR Lyrae stars. We discovered in total 127 RR Lyrae stars with blueshifted Balmer emission feature, including 103 fundamental mode (RRab), 20 first-overtone (RRc), 3 double-mode (RRd), and 1 Blazhko type (temporary classification for RR Lyrae stars with strong Blazhko modulation in Catalina sky survey that cannot be characterized) RR Lyrae variable. This forms the largest database to date of the properties of hydrogen emission in RR Lyrae variables. Based on ZTF DR5, we carried out a detailed light-curve analysis for the Blazhko type RR Lyrae star with hydrogen emission of long-term modulations. We characterize the Blazhko type RR Lyrae star as an RRab and point out a possible Blazhko period. Finally, we set up simulations on mock spectra to test the performance of our algorithm and on the real observational strategy to investigate the occurrence of the "first apparition".
description: ApJ, published. 20 pages, 14 figures, 2 tables; The final version
Bert Hoppe, Hildrun Glass (Hrsg.), Die Verfolgung und Ermordung der europäischen Juden durch das nationalsozialistische Deutschland 1933-1945
Creators: name: Tauber, Joachim
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 1 (2014): Grenzen und Räume. Neue Forschungen und Forschungsimpulse
Dževad Juzbašić, Imre Ress, Lajos Thallóczy, der Historiker und Politiker. Die Entdeckung der Vergangenheit von Bosnien-Herzegowina und die moderne Geschichtswissenschaft
Creators: name: Scheer, Tamara
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 1 (2013)
Bifurcation From Networks of Unstable Attractors to Heteroclinic Switching
Creators: name: Kirst, Christoph
name: Timme, Marc
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We present a dynamical system that naturally exhibits two unstable attractors that are completely enclosed by each others basin volume. This counter-intuitive phenomenon occurs in networks of pulse-coupled oscillators with delayed interactions. We analytically and numerically investigate this phenomenon and clarify the mechanism underlying it: Upon continuously removing the non-invertibility of the system, the set of two unstable attractors becomes a set of two non-attracting saddle states that are heteroclinically connected to each other. This transition from a network of unstable attractors to a heteroclinic cycle constitutes a new type of bifurcation in dynamical systems.
description: 4 pages, 3 Figures
Effects of repeated fertilization and a straw application to the organic layers under Jack Pine and seedling response
Creators: name: Kumi, Janna W.
Publisher: name: University of British Columbia
Year: 2010

description: In an optimum nutrition experiment, a 45-year old jack pine (Pinus banksiana Lamb.) stand in Quebec was repeatedly fertilized over a 10-year period with various levels of NPK fertilizers. In a separate experiment, a straw treatment was applied over snow to smother the ericaceous ground vegetation. Nitrogen fertilizer additions for 10 years resulted in increased humus biomass in all treatments. The greatest gain was on plots receiving repeated low N doses. These organic layers also had the lowest decomposition rates. Heavier N applications increased humus decomposition substantially, but stand litter production was also increased. The straw-treated humus had decomposition rates approaching those found with high N additions. Repeated low N additions immobilized fertilizer N within the humus. Most of the N applied at higher treatment levels appears to have been lost. Nitrogen mineralization rates were investigated in an aerobic incubation study. Nitrification occurred in spite of low pH (<4) on high N plots. The straw addition increased humus nitrogen mineralization rates. The results of repeated additions of P and K were variable. Additions of P and K decreased nitrogen availability although decomposition rates were increased. It appeared that most of the P and K were lost from the organic layers due to leaching. Large N additions had little effect on the humus C/N ratio. They increased the CEC and the pH but reduced the base saturation. Straw additions lowered the humus C/N ratio but increased the CEC, pH and base saturation. Dramatic changes in the ground vegetation occurred. With higher N additions the ericaceous vegetation was greatly reduced and increasingly replaced with Sambucus, Aster and other exotics. The straw application effectively smothered the ericaceous vegetation for 10 years. Seedling bioassay studies showed that both the straw treated humus and the sustained low additions of N plus P and K resulted in the highest seedling biomass. This correlated well with stand growth response. Seedling N nutrition was adequate in all treatments and reflected the ability of mor humus to release immobilized N under improved environmental conditions in the greenhouse. Some possibilities why foliar N could not be correlated with seedling biomass are discussed. It is concluded that in jack pine stands with thin mor humus layers, repeated light nitrogen additions plus phosphorus and potassium result in sufficient nutrient turnover rates to ensure the highest stand response.
Aradus pauliani Hoberlandt 1957
Creators: name: Heiss, Ernst
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae
Aradus
Aradus pauliani

description: Aradus pauliani Hoberlandt, 1957
Aradus pauliani Hoberlandt, 1957: 9. HT ♀: Madagascar (Makaraingo); NMHN Distr.: Madagascar
Ref.: Hoberlandt, 1963 (listed); Kormilev & Froeschner, 1987:51 (cat.)
description: Published as part of Heiss, Ernst, 2012, Annotated catalogue of the flat bug family Aradidae Brullé, 1836 of Madagascar and adjacent islands (Hemiptera: Heteroptera), pp. 45-63 in Zootaxa 3426 (1) on page 48, DOI: 10.11646/zootaxa.3426.1.3, http://zenodo.org/record/214110
Ivo Pejčoch, Fašismus v českých zemích. Fašistické a nacionálněsocialistické strany a hnutí v Čechách a na Moravě 1922-1945
Creators: name: Řepa, Milan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 1 (2014): Grenzen und Räume. Neue Forschungen und Forschungsimpulse
The shortest period field contact binary
Creators: name: Rucinski, Slavek M.
name: Pribulla, Theodor
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Photometric and spectroscopic results for the contact binary GSC 01387-00475 (ASAS 083128+1953.1) are presented. The existence of this binary with the orbital period of P = 0.2178 d strengthens the argument that the cut-off of the period distribution for contact binaries - until now defined by CC Comae - is very sharp. The only case of a still shorter period is known in a globular cluster where more compact contact configurations are in fact expected. While the spectroscopic orbit of GSC 01387-00475 is well defined, the low orbital inclination of the binary and the presence of a spectroscopic companion contributing about 1/3 of the total light conspire to reduce the photometric variability to ~0.09 mag. The photometric data are currently inadequate to identify the source of the small amplitude (0.02 - 0.03 mag) intrinsic variability of the system.
description: to appear in MNRAS
Cajtšryft. časopis dlja dasledvannja jaurčejskaj historyi, demahrafii i ekanomiki, litaratury, movy i etnahrafii. Tom 6 (1)
Creators: name: Burmistr, Svetlana
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 1 (2013)
Winson Chu, The German Minority in Interwar Poland
Creators: name: Krzoska, Markus
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 1 (2014): Grenzen und Räume. Neue Forschungen und Forschungsimpulse
First investigation of eclipsing binary KIC 9026766: analysis of light curve and periodic changes
Creators: name: Soomandar, Somaye
name: Abedi, Abbas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Abstract We investigate a short-period W UMa binary KIC 9026766 with an orbital period of 0.2721278 days in the Kepler field of view. By using an automated q-search for the folded light curve and producing a synthetic light curve for this object based on the PHOEBE code, we calculate the fundamental stellar parameters. We also analyze the O-C curve of the primary minima. The orbital period changes can be attributed to the combination of an upward quadratic function and light-travel time effect due to a possible third body with a minimum mass of 0.029 solar mass and an orbital period of 972.5866 days. The relative luminosity of the primary and secondary eclipses (Min I Min II) is calculated. The periodogram of the residuals of the LTT effect, and Min I Min II show peaks with the same period of 0.8566 days. The background effect of two nearby stars on our target is the possible reason for this signal. By considering the amplitudes and periods of the remaining signals in the OC curve of minima, spot motion is possible.
On the algebraic types of the Bel-Robinson tensor
Creators: name: Ferrando, Joan J.
name: Sáez, Juan A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Bel-Robinson tensor is analyzed as a linear map on the space of the traceless symmetric tensors. This study leads to an algebraic classification that refines the usual Petrov-Bel classification of the Weyl tensor. The new classes correspond to degenerate type I space-times which have already been introduced in literature from another point of view. The Petrov-Bel types and the additional ones are intrinsically characterized in terms of the sole Bel-Robinson tensor, and an algorithm is proposed that enables the different classes to be distinguished. Results are presented that solve the problem of obtaining the Weyl tensor from the Bel-Robinson tensor in regular cases.
description: 21 pages
Peter Lachmann (Hrsg.), DurchFlug. E. T. A. Hoffmann in Schlesien. Ein Lesebuch
Creators: name: Dziergwa, Roman
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2012

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 61 Nr. 3 (2012)
Christoph Mick, Kriegserfahrungen in einer multiethnischen Stadt. Lemberg 1914-1947
Creators: name: Weger, Tobias
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 1 (2014): Grenzen und Räume. Neue Forschungen und Forschungsimpulse
Gertraud Marinelli-König, Die böhmischen Länder in den Wiener Zeitschriften und Almanachen des Vormärz (1805-1848). Tschechische nationale Wiedergeburt, Kultur- und Landeskunde von Böhmen, Mähren und Schlesien, kulturelle Beziehungen zu Wien. Bd. 1
Creators: name: Kessler, Wolfgang
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 1 (2013)
Markus Krzoska (Hrsg.), Zwischen Glaube und Nation? Beiträge zur Religionsgeschichte Ostmitteleuropas im langen 19. Jahrhundert
Creators: name: Osterkamp, Jana
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 1 (2013)
Soil erosion, water quality and revegetation at a sub-alpine ski area development
Creators: name: McTavish, Robert Bruce
Publisher: name: University of British Columbia
Year: 2010

description: Earth clearing activities in subalpine areas on the west coast of British Columbia can lead to serious soil erosion and subsequent deterioration in physical stream water quality. This study undertook to measure soil losses on unvegetated slopes, sediment discharge into waterways and methods of vegetative erosion control. This study took place at Hemlock Valley Ski Resort which is located in the mountain-hemlock biogeoclimatic zone on the west coast of British Columbia. Quantification of soil loss on unvegetated slopes using a portable rill meter measured soil losses of 605 t ha¹ over a four-month period and a total soil loss of 1 104 t ha⁻¹ over a twenty-six-month period. This corresponded to measured sediment loading in surrounding waterways of up to 571 mg L⁻¹ of suspended solids and downstream movement of sediment of 120.6 tonnes per hour. Testing of twenty-one agronomic grasses and legumes for their ability to establish adequate ground cover to control erosion, resulted in two recommended seed mixes. For dry areas with well drained soils, the species giving highest observed ground cover were tetraploid perennial ryegrass, redtop bentgrass, penncross bentgrass and creeping red fescue. The species giving highest observed ground cover on areas with topsoil intact and poorer drained soils were hard fescue, annual ryegrass, orchard grass and slender wheatgrass. In most species increases in the rates of fertilizer application from 150 to 300 kg ha⁻¹ (12-20-20) resulted in an increase in observed ground cover. A native sedge Carex mertensii was also tested under both laboratory and field conditions. Germination tests in the laboratory gave a maximum germination of 97.5% when tested on top of moist blotters with a five-day prechill and seed wings on and temperature alternating at 30°C on 12-hour day and 20°C on 12-hour night. Field experiments carried out on a site previously shown incapable of supporting agronomic grasses and legumes showed a maximum observed ground cover of 28% with Carex mertensii applied at a seeding rate of 50 kg ha⁻¹ and 12-20-20 fertilizer at 600 kg ha⁻¹.
Krisztián Csaplár-Degovics, István Fazekas (Hrsg.), Geteilt - Vereinigt. Beiträge zur Geschichte des Königreichs Ungarn in der Frühneuzeit (16.-18. Jahrhundert)
Creators: name: Végh, Ferenc
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2012

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 61 Nr. 3 (2012)
Włodzimierz Borodziej, Joachim von Puttkamer (Hrsg.), Europa und sein Osten. Geschichtskulturelle Herausforderungen
Creators: name: Schattkowsky, Ralph
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 1 (2014): Grenzen und Räume. Neue Forschungen und Forschungsimpulse
Advanced Arabic Alphabet Sign Language Recognition Using Transfer Learning and Transformer Models
Creators: name: Balat, Mazen
name: Awaad, Rewaa
name: Adel, Hend
name: Zaky, Ahmed B.
name: Aly, Salah A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This paper presents an Arabic Alphabet Sign Language recognition approach, using deep learning methods in conjunction with transfer learning and transformer-based models. We study the performance of the different variants on two publicly available datasets, namely ArSL2018 and AASL. This task will make full use of state-of-the-art CNN architectures like ResNet50, MobileNetV2, and EfficientNetB7, and the latest transformer models such as Google ViT and Microsoft Swin Transformer. These pre-trained models have been fine-tuned on the above datasets in an attempt to capture some unique features of Arabic sign language motions. Experimental results present evidence that the suggested methodology can receive a high recognition accuracy, by up to 99.6\% and 99.43\% on ArSL2018 and AASL, respectively. That is far beyond the previously reported state-of-the-art approaches. This performance opens up even more avenues for communication that may be more accessible to Arabic-speaking deaf and hard-of-hearing, and thus encourages an inclusive society.
description: 6 pages, 8 figures
Dynamo Model for North-South Asymmetry of Solar Activity
Creators: name: Kitchatinov, Leonid
name: Khlystova, Anna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations reveal a relatively small but statistically significant North-South (NS) asymmetry in sunspot activity varying on a time scale of several solar cycles. This paper proposes a dynamo model for the phenomenon of long-term NS asymmetry. The model separates dynamo equations for magnetic fields of dipolar and quadrupolar equatorial parity. The NS asymmetry results from the superposition of dipolar and quadrupolar fields. Model computations confirm the formerly proposed excitation of the quadrupolar dynamo mode by a dominant dipolar mode mediated by the equator-symmetric fluctuations in the $α$-effect as a mechanism for the long-term NS asymmetry. An analytically solvable example of oscillations excited by short-term random forcing is given to justify the numerical result of NS asymmetry coherent on a time scale of several (about 6 in the present model) solar cycles resulting from random variations in the $α$-effect on a time scale of one solar rotation. The model computations show the phase locking phenomenon of dipolar and quadrupolar fields oscillating predominantly in phase (northern type asymmetry) or in antiphase (southern type asymmetry) with relatively short irregular transitions between these two states. Large asymmetry in the simulated Grand minima is found and explained by weak magnetic quenching of the $α$-effect during the minima. The possibility of polar field asymmetry in activity minima as a precursor of sunspot asymmetry in the following activity cycles is discussed based on the dynamo model and observations.
description: 12 pages, 9 figures, accepted in ApJ
การศึกษาวิเคราะห์เส้นใยจากพืชตระกูลกล้วยทางภาคเหนือเพื่อใช้ประโยชน์ในการสร้างผลิตภัณฑ์
Creators: name: สาธิต เหล่าวัฒนพงษ์
name: สิทธิชัย สมานชาติ
Publisher: name: มหาวิทยาลัยอุบลราชธานี
Year: 2012
Subjects: เส้นใย จากพืชตระกูลกล้วยทางภาคเหนือ การสร้างผลิตภัณฑ์

description: 1, 6, วารสารวิชาการและวิจัย มทร.พระนคร
Il doppio riconoscimento dell' Ifigenia in Tauride (vv. 467-901) e la relativa valutazione aristotelica
Creators: name: Belli, Giacomo
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: The dramaturgical analysis of the dual recognition scene performed in Euripides’ IT shows a contradiction in the Aristotle’s Poetic chapter which classifies different types of recognition
description: Annali Online  Lettere - Ferrara, V 1 (2010)
Transfer RNA genes in Drosophila melanogaster
Creators: name: Newton, Craig Hunter
Publisher: name: University of British Columbia
Year: 2010

description: In Drosophila melanogaster the 600-800 reiterated copies of genes encoding cytoplasmic tRNA are dispersed across the genome at a multitude of chromosomal sites. In many cases these sites contain several copies of the same and different tRNA genes. Here we describe tRNA genes obtained from two of these sites; one, on the X chromosome at 12E, is the major site of in situ hybridization with tRNA₇[sup Ser] (anticodon IGA) or tRNA₄[sup Ser] (CGA). The second is one of three minor hybridization sites and is located on chromosome 2L at 23E . DNA sequencing studies here show that the plasmid derived from 12E (pDt27R) contains two identical tRNA₄[sup Ser] genes and four identical genes encoding a minor arginine isoacceptor (UCG). Previous studies with different plasmids had shown 12E also contains two genes identical to tRNA₇[sup Ser] and two additional one and two basepair variants thereof. Thus 12E contains at least ten genes encoding three, or perhaps five, different isoacceptors. The organization of these genes within 12E is not known. In pDt27R all six genes occur within 2.3 kbp and are in the same transcriptional orientation. The two serine genes are 317 bp apart and are separated by 669 bp from the four adjacent arginine genes. While little flanking sequence homology occurs around the serine genes, the flanking sequence of each arginine gene is almost identical. The extent of these homologies differ mainly in the amount of shared 5' flanking sequence; two genes are contained on repeats with 455 bp of common sequence while two others are contained on repeats that share only 30 bp of 51 flanking sequence. All four genes have the same 75 bp of 3' flanking sequence. The repeats are tandemly linked by junction sequences 5-27 bp in length. The flanking sequence around one gene is considerably more divergent (18% versus 1-3%) from the other three. This structure suggests that the gene quartet arose from a single primordial gene by a series of duplication events that included identical and different amounts of flanking sequence. In one case the duplication included identical amounts of flanking sequence but acted at times distant enough for 18% divergence to accumulate. The plasmid bearing DNA from 23E on chromosome 2L (pDt5) contains a single gene identical to the tRNA₇[sup Ser] genes previously described at 12E on the X chromosome. This gene occurs alone approximately in the middle of a 4.4 kbp fragment of Drosophila DNA. The only similarities in flanking sequence with the two identical genes at 12E are small regions that occur within 30 bp of the 5' mature coding sequence. Similarly, different sequences are conserved at analogous positions 5' to the two tRNA₄[sup Ser] genes also at 12E.
title: Writing The Dictatorship: Reuse Of Myth In Ismail Kadare’s Novels
Creators: name: Terziu, F
Publisher: name: London South Bank University
Year: 2015

description: This study attempts to analyse how and why Kadare reuses myths in his novels Chronicle in Stone, The Bearer of ill Tidings – Islamo nox, Agamemnon's Daughter and Beauty Pageant for Men in the Accursed Mountains. I will be arguing that the reused myths in these novels predominantly convey a message about Albania at the time during which Kadare wrote the novels. It will be argued that the novels are used to critique the period of Communism and the period immediately after the collapse of Communism, even when they are set in different time periods, and it is through a use of myths and archetypes that Kadare manages this. It was necessary for Kadare to write his criticism of aspects of communist society through the use of the myths, in order for him to escape the censorship of the Communist Party, which required all literary works to conform to socialist realism, and to present a particular ideological view. This idea will be analysed predominantly in the discussions around Chronicle in Stone, The Bearer of ill Tidings – Islamo nox and Agamemnon's Daughter. On the other hand, Beauty Pageant for Men in the Accursed Mountains was written in the post-Communist period, though Kadare still felt it necessary to investigate the transitional society in Albania through the use of mythical aspects as metaphors.