cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Temporal envelope and fine structure cues for dysarthric speech detection using CNNs
Creators: name: Kodrasi, Ina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Deep learning-based techniques for automatic dysarthric speech detection have recently attracted interest in the research community. State-of-the-art techniques typically learn neurotypical and dysarthric discriminative representations by processing time-frequency input representations such as the magnitude spectrum of the short-time Fourier transform (STFT). Although these techniques are expected to leverage perceptual dysarthric cues, representations such as the magnitude spectrum of the STFT do not necessarily convey perceptual aspects of complex sounds. Inspired by the temporal processing mechanisms of the human auditory system, in this paper we factor signals into the product of a slowly varying envelope and a rapidly varying fine structure. Separately exploiting the different perceptual cues present in the envelope (i.e., phonetic information, stress, and voicing) and fine structure (i.e., pitch, vowel quality, and breathiness), two discriminative representations are learned through a convolutional neural network and used for automatic dysarthric speech detection. Experimental results show that processing both the envelope and fine structure representations yields a considerably better dysarthric speech detection performance than processing only the envelope, fine structure, or magnitude spectrum of the STFT representation.
description: To appear in IEEE Signal Processing Letters, 2021
Für eine gemeinsame deutsch-polnische Zukunft? Hans Hartwig von Beseler als Generalgouverneur in Polen 1915-1918
Creators: name: Spät, Robert
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2009

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 58 Nr. 4 (2009)
Electric force lines of the double Reissner-Nordstrom exact solution
Creators: name: Paolino, A.
name: Pizzi, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently, Alekseev and Belinski have presented a new exact solution of the Einstein-Maxwell equations which describes two Reissner-Nordstrom (RN) sources in reciprocal equilibrium (no struts nor strings); one source is a naked singularity, the other is a black hole: this is the only possible configuration for separable object, apart from the well-known extreme case ($m_i=e_i$). In the present paper, after a brief summary of this solution, we study in some detail the coordinate systems used and the main features of the gravitational and electric fields. In particular we graph the plots of the electric force lines in three qualitatively different situations: equal-signed charges, opposite charges and the case of a naked singularity near a neutral black hole.
description: 19 pages, 7 figures, accepted by IJMPD
Generating Synthetic Training Data for Deep Learning-Based UAV Trajectory Prediction
Creators: name: Becker, Stefan
name: Hug, Ronny
name: Hübner, Wolfgang
name: Arens, Michael
name: Morris, Brendan T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Deep learning-based models, such as recurrent neural networks (RNNs), have been applied to various sequence learning tasks with great success. Following this, these models are increasingly replacing classic approaches in object tracking applications for motion prediction. On the one hand, these models can capture complex object dynamics with less modeling required, but on the other hand, they depend on a large amount of training data for parameter tuning. Towards this end, we present an approach for generating synthetic trajectory data of unmanned-aerial-vehicles (UAVs) in image space. Since UAVs, or rather quadrotors are dynamical systems, they can not follow arbitrary trajectories. With the prerequisite that UAV trajectories fulfill a smoothness criterion corresponding to a minimal change of higher-order motion, methods for planning aggressive quadrotors flights can be utilized to generate optimal trajectories through a sequence of 3D waypoints. By projecting these maneuver trajectories, which are suitable for controlling quadrotors, to image space, a versatile trajectory data set is realized. To demonstrate the applicability of the synthetic trajectory data, we show that an RNN-based prediction model solely trained on the generated data can outperform classic reference models on a real-world UAV tracking dataset. The evaluation is done on the publicly available ANTI-UAV dataset.
description: Accepted at the International Conference on Robotics, Computer Vision and Intelligent Systems (ROBOVIS) 2021
Fast Fourier Transforms for the Rook Monoid
Creators: name: Malandro, Martin
name: Rockmore, Daniel N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65T99, 68W30

description: We define the notion of the Fourier transform for the rook monoid (also called the symmetric inverse semigroup) and provide two efficient divide-and-conquer algorithms (fast Fourier transforms, or FFTs) for computing it. This paper marks the first extension of group FFTs to non-group semigroups.
S stars and s-process in the Gaia era II. Constraining the luminosity of the third dredge-up with Tc-rich S stars
Creators: name: Shetye, Shreeya
name: Van Eck, Sophie
name: Jorissen, Alain
name: Goriely, Stephane
name: Siess, Lionel
name: Van Winckel, Hans
name: Plez, Bertrand
name: Godefroid, Michel
name: Wallerstein, George
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: S stars are late-type giants that are transition objects between M-type stars and carbon stars on the asymptotic giant branch (AGB). They are classified into two types: intrinsic or extrinsic, based on the presence or absence of technetium (Tc). The Tc-rich or intrinsic S stars are thermally-pulsing (TP-)AGB stars internally producing s-process elements (including Tc) which are brought to their surface via the third dredge-up (TDU). Tc-poor or extrinsic S stars gained their s-process overabundances via accretion of s-process-rich material from an AGB companion which has since turned into a dim white dwarf. Our goal is to investigate the evolutionary status of Tc-rich S stars by locating them in a Hertzsprung-Russell (HR) diagram using the results of Gaia early Data Release 3 (EDR3). We combine the current sample of 13 Tc-rich stars with our previous studies of 10 Tc-rich stars to determine the observational onset of the TDU in the metallicity range [-0.7; 0]. We also compare our abundance determinations with dedicated AGB nucleosynthesis predictions. The stellar parameters are derived using an iterative tool which combines HERMES high-resolution spectra, accurate Gaia EDR3 parallaxes, stellar evolution models and tailored MARCS model atmospheres for S-type stars. Using these stellar parameters we determine the heavy-element abundances by line synthesis. In the HR diagram, the intrinsic S stars are located at higher luminosities than the predicted onset of the TDU. These findings are consistent with Tc-rich S stars being genuinely TP-AGB stars. The comparison of the derived s-process abundance profiles of our intrinsic S stars with the nucleosynthesis predictions provide an overall good agreement. Stars with highest [s/Fe] tend to have the highest C/O ratios.
description: 22 pages, 10 figures, accepted for publication in Section 7. Stellar structure and evolution of Astronomy and Astrophysics (A&A)
Element abundance analysis of the metal-rich stellar halo and high-velocitythick disk in the galaxy
Creators: name: Zhu, Haifan
name: Du, Cuihua
name: Yan, Yepeng
name: Shi, Jianrong
name: Ma, Jun
name: Newberg, Heidi Jo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Based on the second Gaia data release (DR2) and APOGEE (DR16) spectroscopic surveys, wedefined two kinds of star sample: high-velocity thick disk (HVTD) with $vϕ>90km/s$ and metal-richstellar halo (MRSH) with $vϕ<90km/s$. Due to high resolution spectra data from APOGEE (DR16),we can analyze accurately the element abundance distribution of HVTD and MRSH. These elementsabundance constituted a multidimensional data space, and we introduced an algorithm method forprocessing multi-dimensional data to give the result of dimensionality reduction clustering. Accordingto chemical properties analysis, we derived that some HVTD stars could origin from the thin disk,and some MRSH stars from dwarf galaxies, but those stars which have similar chemical abundancecharacteristics in both sample may form in-situ.
description: 11 pages, 8 figures, accepted for publication in ApJ
Multiple magnetism controlled topological states in EuAgAs
Creators: name: Jin, Yahui
name: Zeng, Xu-Tao
name: Feng, Xiaolong
name: Du, Xin
name: Wu, Weikang
name: Sheng, Xian-Lei
name: Yu, Zhi-Ming
name: Zhu, Ziming
name: Yang, Shengyuan A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The interplay between magnetism and band topology is a focus of current research on magnetic topological systems. Based on first-principle calculations and symmetry analysis, we reveal multiple intriguing topological states can be realized in a single system EuAgAs, controlled by the magnetic ordering. The material is Dirac semimetal in the paramagnetic state, with a pair of accidental Dirac points. Under different magnetic configurations, the Dirac points can evolve into magnetic triply-degenerate points, magnetic linear and double Weyl points, or being gapped out and making the system a topological mirror semimetal characterized by mirror Chern numbers. The change in bulk topology is also manifested in the surface states, including the surface Fermi arcs and surface Dirac cones. In addition, the antiferromagnetic states also feature a nontrivial Z4 index, implying a higher order topology. These results deepen our understanding of magnetic topological states and provide new perspectives for spintronic applications.
description: 8 pages,7 figures
Structural investigation and bacteriophage degradation of bacterial polysaccharides
Creators: name: Karunaratne, Desiree Nedra
Publisher: name: University of British Columbia
Year: 2010

description: Seventy eight serologically distinct strains of Klebsiella bacteria are known to exist. The capsular polysaccharide surrounding the bacterial cell of these pathogenic Enterobacteria is of immunological significance. Structures of the capsular polysaccharides of nearly sixty seven strains of Klebsiella have been established, and each one found to be unique. The structures of the K antigens from Klebsiella, serotypes K67 and K80 are presented as a contribution to the continuing program of elucidation of the chemical structures of these antigens in an attempt to explain their immunological responses. Chemical methods of structural elucidation were employed and the following two structures were obtained. [formula omitted] The polysaccharide from K67 was unique among the Klebsiella K antigens in having a four-plus-two-plus-one repeating-unit (indicating a branch on a side chain), while K80 was unique as it was the first instance that a pyruvic acetal was found on a terminal rhamnose unit. The importance of bacteriophage-borne enzymes in the generation of single repeating-units containing labile substituents is demonstrated. Klebsiella K44 polysaccharide was degraded using a crude solution of Φ44 bacteriophage. The oligosaccharides obtained were crucial in the determination of the position of the 0-acetate group. In the case of the polysaccharide from Klebsiella K26, the degradation performed using a crude solution of Φ26 bacteriophage resulted in the isolation of a single repeating-unit containing a pyruvic acetal together with an oligosaccharide corresponding to a single repeating-unit devoid of its terminal pyruvate containing sugar. The structures of these compounds which are as follows, were useful in further confirmation of the structures of the original polysaccharides. [formula omitted] Escherichia coli. another pathogenic Enterobacteria possessing immunologically significant K antigens, has been found to contain capsular polysaccharides bearing a strong resemblance to those of Klebsiella. Recently it was discovered that some strains of E. coli contained K antigens comprising amino sugars. A preliminary study on the chemical behaviour of amino sugars, and chemical methods of structure elucidation of such polysaccharides have been included in an appendix as this has been a new area of research in this laboratory. An appendix containing compilations of the cross-reactions, known structures, and chemotypes of the Klebsiella K antigens has also been included.
The Initial Mass Function of the Stellar Association NGC 602 in the Small Magellanic Cloud with Hubble Space Telescope ACS Observations
Creators: name: Schmalzl, Markus
name: Gouliermis, Dimitrios A.
name: Dolphin, Andrew E.
name: Henning, Thomas
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present our photometric study of the stellar association NGC 602 in the wing of the Small Magellanic Cloud (SMC). The data were taken in the filters F555W and F814W using the Advanced Camera for Surveys (ACS) on-board the Hubble Space Telescope (HST). Photometry was performed using the ACS module of the stellar photometry package DOLPHOT. We detected more than 5,500 stars with a magnitude range of 14 \lsim m_{555} \lsim 28 mag. Three prominent stellar concentrations are identified with star counts in the observed field, the association NGC 602 itself, and two clusters, one of them not being currently in any known catalog. The Color-Magnitude Diagrams (CMDs) of both clusters show features typical for young open clusters, while that of the association reveals bright main sequence (MS) and faint pre-main sequence (PMS) stars as the members of the system. We construct the initial mass spectrum (IMS) of the association by applying an age-independent method of counting the PMS stars within evolutionary tracks, while for the bright MS stars we transform their magnitudes to masses with the use of mass-luminosity relations. The IMS of NGC 602 is found to be well represented by a single-power law, corresponding to an Initial Mass Function (IMF) of slope Γ\approx -1.2 for 1 \lsim M/M{\solar} \lsim 45. This indicates that the shape of the IMF of a star forming system in the SMC for stars with masses higher than 1 M{\solar} seems to be quite similar to the field IMF in the solar neighborhood.
description: Accepted for publication in ApJ, 13 pages, 14 figures, emulateapj.cls LaTeX style, full resolution version available on http://www.astro.uni-bonn.de/~dgoulier/Science/NGC602/ms.pdf
Guaranteed Minimum-Rank Solutions of Linear Matrix Equations via Nuclear Norm Minimization
Creators: name: Recht, Benjamin
name: Fazel, Maryam
name: Parrilo, Pablo A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optimization and Control (math.OC)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 90C25, 90C59, 15A52

description: The affine rank minimization problem consists of finding a matrix of minimum rank that satisfies a given system of linear equality constraints. Such problems have appeared in the literature of a diverse set of fields including system identification and control, Euclidean embedding, and collaborative filtering. Although specific instances can often be solved with specialized algorithms, the general affine rank minimization problem is NP-hard. In this paper, we show that if a certain restricted isometry property holds for the linear transformation defining the constraints, the minimum rank solution can be recovered by solving a convex optimization problem, namely the minimization of the nuclear norm over the given affine space. We present several random ensembles of equations where the restricted isometry property holds with overwhelming probability. The techniques used in our analysis have strong parallels in the compressed sensing framework. We discuss how affine rank minimization generalizes this pre-existing concept and outline a dictionary relating concepts from cardinality minimization to those of rank minimization.
Detailed Spectral Modeling of a 3-D Pulsating Reverse Detonation Model: Too Much Nickel
Creators: name: Baron, E.
name: Jeffery, David J.
name: Branch, David
name: Bravo, Eduardo
name: Garcia-Senz, Domingo
name: Hauschildt, Peter H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculate detailed NLTE synthetic spectra of a Pulsating Reverse Detonation (PRD) model, a novel explosion mechanism for Type Ia supernovae. While the hydro models are calculated in 3-D, the spectra use an angle averaged hydro model and thus some of the 3-D details are lost, but the overall average should be a good representation of the average observed spectra. We study the model at 3 epochs: maximum light, seven days prior to maximum light, and 5 days after maximum light. At maximum the defining Si II feature is prominent, but there is also a prominent C II feature, not usually observed in normal SNe Ia near maximum. We compare to the early spectrum of SN 2006D which did show a prominent C II feature, but the fit to the observations is not compelling. Finally we compare to the post-maximum UV+optical spectrum of SN 1992A. With the broad spectral coverage it is clear that the iron-peak elements on the outside of the model push too much flux to the red and thus the particular PRD realizations studied would be intrinsically far redder than observed SNe Ia. We briefly discuss variations that could improve future PRD models.
description: 15 pages, 4 figures, submitted to ApJ
Using squeezed field to preserve two-atom entanglement against spontaneous emissions
Creators: name: Zhang, Jing
name: Wu, Re-Bing
name: Li, Chun-Wen
name: Tarn, Tzyh-Jong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Tunable interaction between two atoms in a cavity is realized by interacting the two atoms with an extra controllable single-mode squeezed field. Such a controllable interaction can be further used to control entanglement between the two atoms against amplitude damping decoherence caused by spontaneous emissions. For the independent amplitude damping decoherence channel, entanglement will be lost completely without controls, while it can be partially preserved by the proposed strategy. For the collective amplitude damping decoherence channel, our strategy can enhance the entanglement compared with the uncontrolled case when the entanglement of the uncontrolled stationary state is not too large.
description: 5 figures
Oscillations and interactions of dark and dark-bright solitons in Bose-Einstein condensates
Creators: name: Becker, C.
name: Stellmer, S.
name: Soltan-Panahi, P.
name: Dörscher, S.
name: Baumert, M.
name: Richter, E. -M.
name: Kronjäger, J.
name: Bongs, K.
name: Sengstock, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Solitons are among the most distinguishing fundamental excitations in a wide range of non-linear systems such as water in narrow channels, high speed optical communication, molecular biology and astrophysics. Stabilized by a balance between spreading and focusing, solitons are wavepackets, which share some exceptional generic features like form-stability and particle-like properties. Ultra-cold quantum gases represent very pure and well-controlled non-linear systems, therefore offering unique possibilities to study soliton dynamics. Here we report on the first observation of long-lived dark and dark-bright solitons with lifetimes of up to several seconds as well as their dynamics in highly stable optically trapped $^{87}$Rb Bose-Einstein condensates. In particular, our detailed studies of dark and dark-bright soliton oscillations reveal the particle-like nature of these collective excitations for the first time. In addition, we discuss the collision between these two types of solitary excitations in Bose-Einstein condensates.
description: 9 pages, 4 figures
Short Gamma-Ray Bursts and Binary Mergers in Spiral and Elliptical Galaxies: Redshift Distribution and Hosts
Creators: name: O'Shaughnessy, R.
name: Kalogera, V.
name: Belczynski, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: To test whether the short GRB rates, redshift distribution and host galaxies are consistent with current theoretical predictions, we use avery large database of population synthesis calculations to examine BH-NS and NS-NS merger rates in the universe, factoring in (i) the star formation history of the universe, (ii) a heterogeneous population of star-forming galaxies, including spirals and ellipticals, and (iii) a simple flux-limited selection model for short GRB detection. When we require our models reproduce the known short GRB rates and redshift measurements (and, for NS-NS, the merger rates extrapolated from binary pulsars in the Galaxy), a small fraction of models reproduce all observations, both when we assume a NS-NS and a BH-NS origin for bursts. Most commonly models produce mergers preferentially in spiral galaxies if short GRBs arise from NS-NS mergers alone. Model universes where present-day binary mergers occur preferentially in elliptical galaxies necessarily include a significant fraction of binaries with long delay times between birth and merger (often $O(10{\rm Gyr})$). Though long delays occur, almost all of our models predict that a higher proportion of short GRBs should occur at moderate to high redshift (e.g., $z>1$) than has presently been observed, in agreement with recent observations which suggest a selection bias towards successful follow-up of low-redshift short GRBs. Finally, if only a fraction of BH-NS mergers have the right combination of masses and spins to make GRBs, then at best only a small fraction of BH-NS models could be consistent with all {\em current} available data. (Abridged)
description: 14 figures, using bitmapped fonts (via eps2eps) to fit in archive space restrictions; better resolution figures are available from the author. Accepted for publication in ApJ. v3 updates references
Stability of the multidimensional wave equation in port-Hamiltonian modelling
Creators: name: Jacob, Birgit
name: Skrepek, Nathanael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 47D06, 35L05, 93D15

description: We investigate the stability of the wave equation with spatial dependent coefficients on a bounded multidimensional domain. The system is stabilized via a scattering passive feedback law. We formulate the wave equation in a port-Hamiltonian fashion and show that the system is semi-uniform stable, which is a stability concept between exponential stability and strong stability. Hence, this also implies strong stability of the system. In particular, classical solutions are uniformly stable. This will be achieved by showing that the spectrum of the port-Hamiltonian operator is contained in the left half plane $\mathbb{C}_{-}$ and the port-Hamiltonian operator generates a contraction semigroup. Moreover, we show that the spectrum consists of eigenvalues only and the port-Hamiltonian operator has a compact resolvent.
Katrin Steffen, Jüdische Polonität. Ethnizität und Nation im Spiegel der polnischsprachigen jüdischen Presse 1918-1939
Creators: name: Hein, Heidi
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2005

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 54 Nr. 3 (2005)
Numerical study of the Coulomb blockade in an open quantum dot
Creators: name: Hamamoto, Yuji
name: Kato, Takeo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Coulomb blockade in an open quantum dot connected to a bulk lead by a single mode point contact is studied numerically using the path-integral Monte Carlo method. The Coulomb oscillation of the average charge and capacitance of the dot is investigated, and is compared with the analytic expression for strong tunneling. At the degeneracy point, we observe logarithmic divergence of the capacitance for strong backscattering at the point contact. This observation supports the conjecture that the nature of the present system at the degeneracy point is described by the two-channel Kondo problem for an arbitrary strength of tunneling.
description: 5 pages, 4 figures
Divinylcyclopropane rearrangements : preparation of tricyclic ring systems and a formal total synthesis of (±)-quadrone
Creators: name: Moss, Neil
Publisher: name: University of British Columbia
Year: 2010

description: The first section of this thesis describes three model studies involving the synthesis of the divinylcyclopropanes (135), (136), and (137) and the subsequent thermal rearrangement of these compounds to provide the interesting tricyclic compounds (139), (140), and (141). [Formula Omitted] The second section of this thesis describes a formal total synthesis of the antitumor sesquiterpenoid (±)-quadrone (34). The synthesis is based on the chemistry developed in the model studies and involves the thermal rearrangement of the divinylcyclopropane (304) as the key step. The resulting product, compound (305), is- subsequently elaborated into the keto aldehyde (230), and since compound (230) has previously been converted into (t)-quadrone (34) by Burke and coworkers,¹⁰¹ the isolation of (230) comprises a formal total synthesis of the sesquiterpenoid. [Formula Omitted] The third section of this thesis describes a study involving the facile vinylmethylenecyclopropane rearrangement of enolates derived from various 7-exo-vinylbicyclo[4.1.0]heptan-2-ones.
Zwischen „Recht auf Heimat“ und Versöhnung – die Kirchen in der Bundesrepublik und ihr Verhältnis zu Polen 1956-1965
Creators: name: Feindt, Gregor
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2009

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 58 Nr. 4 (2009)
Improbability of DUrca process constraints EOS
Creators: name: Tong, Hao
name: Peng, Qiu-he
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: According to recent observational and theoretical progresses, the DUrca process (direct Urca process) may be excluded from the category of neutron star cooling mechanisms. This result combined with the latest nuclear symmetry energy experiments, will provide us an independent way of testing the EOS (equation of state) for supranormal density. For example, soft EOSs such as FPS will probably be excluded.
Test-splitter : creating unit tests from system tests with different input combinations
Creators: name: Demir, Oguz
Publisher: name: The University of Texas at Austin
Year: 2018
Subjects: Automated software testing
Automated test generation

description: In this thesis, an automated test generation technique for creating unit tests from system tests is presented. Our technique includes two main approaches, which are splitting a test into multiple tests and alternating the input values of the tests by applying different input combinations. We also present our tool which allows this technique to be applied on Java projects. We evaluated our technique on popular open-source projects. The results show that our technique can effectively create unit tests from system tests and increase the code coverage of the test suite by applying different combinations for input values.
Hawking-Ellis type of matter on Killing horizons in symmetric spacetimes
Creators: name: Maeda, Hideki
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Spherically, plane, or hyperbolically symmetric spacetimes with an additional hypersurface orthogonal Killing vector are often called ``static'' spacetimes even if they contain regions where the Killing vector is non-timelike. It seems to be widely believed that an energy-momentum tenor for a matter field compatible with these spacetimes in general relativity is of the Hawking-Ellis type I everywhere. We show in arbitrary $n(\ge 3)$ dimensions that, contrary to popular belief, a matter field on a Killing horizon is not necessarily of type I but can be of type II. Such a type-II matter field on a Killing horizon is realized in the Gibbons-Maeda-Garfinkle-Horowitz-Strominger black hole in the Einstein-Maxwell-dilaton system and may be interpreted as a mixture of a particular anisotropic fluid and a null dust fluid.
description: 7 pages, 1 table, no figure; v3, final version published in Physical Review D
Edvard Beneš und die tschechoslowakische Außenpolitik 1918-1948
Creators: name: Bollinger, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 1 (2003)
Manfred Hagen, Die russische Freiheit. Wege in ein paradoxes Thema
Creators: name: Demm, Eberhard
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 4 (2003)
Broadband optical characterization of material properties
Creators: name: Nielsen, Otto Højager Attermann
Publisher: name: Technical University of Denmark
Year: 2014

description: Optical inspection of material properties is of great interest to industry because it can perform objective and non-invasive characterisation of large sample quantities. This may be used in various ways to lower production costs and improve product quality. In this thesis the objective has been to develop and investigate the applicability of optical broadband characterization techniques in industrially relevant production process. Both combined broad and high resolution techniques have the potential to provide important information on scattering properties related to particle size distributions, as well as details of the absorption spectrum which relate to chemical composition.
description: DTU Compute PHD_2014 number 344 issn: 0909-3192
Jan Pisuliński, Nie tylko Petlura. Kwestia ukraińska w polskiej polityce zagranicznej w latach 1918-1923
Creators: name: Wiaderny, Bernard
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2005

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 54 Nr. 3 (2005)
Iwona Pietrzyk, Kancelaria i dokument Przemyślidów opawskich w XIV i początkach XV wieku
Creators: name: Irgang, Winfried
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2009

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 58 Nr. 3 (2009): Vorträge der Sektion "Osteuropa" auf dem 37. Deutschen Reichshistorikertag
Wave packet approach to quantum correlations in neutrino oscillations
Creators: name: Blasone, Massimo
name: De Siena, Silvio
name: Matrella, Cristina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Quantum correlations provide a fertile testing ground for investigating fundamental aspects of quantum physics in various systems, especially in the case of relativistic (elementary) particle systems as neutrinos. In a recent paper, Ming et al. (Ming et al. Eur.Phys.J.C 80 (2020) 275), in connection with results of Daya-Bay and MINOS experiments, have studied the quantumness in neutrino oscillations in the framework of plane-wave approximation. We extend their treatment by adopting the wave packet approach that accounts for effects due to localization and decoherence. This leads to a better agreement with experimental results, in particular for the case of MINOS experiment.
description: 10 pages, 5 figures
Relaxational dynamics in 3D randomly diluted Ising models
Creators: name: Hasenbusch, Martin
name: Pelissetto, Andrea
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the purely relaxational dynamics (model A) at criticality in three-dimensional disordered Ising systems whose static critical behaviour belongs to the randomly diluted Ising universality class. We consider the site-diluted and bond-diluted Ising models, and the +- J Ising model along the paramagnetic-ferromagnetic transition line. We perform Monte Carlo simulations at the critical point using the Metropolis algorithm and study the dynamic behaviour in equilibrium at various values of the disorder parameter. The results provide a robust evidence of the existence of a unique model-A dynamic universality class which describes the relaxational critical dynamics in all considered models. In particular, the analysis of the size-dependence of suitably defined autocorrelation times at the critical point provides the estimate z=2.35(2) for the universal dynamic critical exponent. We also study the off-equilibrium relaxational dynamics following a quench from T=\infty to T=T_c. In agreement with the field-theory scenario, the analysis of the off-equilibrium dynamic critical behavior gives an estimate of z that is perfectly consistent with the equilibrium estimate z=2.35(2).
description: 38 pages
The structure of unicellular maps, and a connection between maps of positive genus and planar labelled trees
Creators: name: Chapuy, Guillaume
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 05C30

description: A unicellular map is a map which has only one face. We give a bijection between a dominant subset of rooted unicellular maps of fixed genus and a set of rooted plane trees with distinguished vertices. The bijection applies as well to the case of labelled unicellular maps, which are related to all rooted maps by Marcus and Schaeffer's bijection. This gives an immediate derivation of the asymptotic number of unicellular maps of given genus, and a simple bijective proof of a formula of Lehman and Walsh on the number of triangulations with one vertex. From the labelled case, we deduce an expression of the asymptotic number of maps of genus g with n edges involving the ISE random measure, and an explicit characterization of the limiting profile and radius of random bipartite quadrangulations of genus g in terms of the ISE.
description: 27pages, 6 figures, to appear in PTRF. Version 2 includes corrections from referee report in sections 6-7
Цифровізація освіти: бібліометричний аналіз сучасних досліджень
Creators: name: Костецький Павло Васильович
name: Іванцов Сергій Вікторович
Publisher: name: Zenodo
Year: 2023

description: Сучасні тренди розвитку освіти характеризують значні її зміни під впливом цифрових технологій. Тригером до цифрових трансформацій у системі освіти стала пандемія COVID-19. При цьому формування стратегії цифрових освітніх трансформацій важливо розуміти ключові напрямки, у яких вони відбуваються, а також ключові наслідки, викликані цифровізацією освіти. За допомогою проведеного бібліометричного аналізу було виявлено найбільш важливі напрямки, яким присвячені сучасні наукові дослідження у сфері цифровізації освіти. Найбільш значущими об'єктами наукової уваги були питання використання цифрових технологій в освітньому процесі, особливостей формування цифрових навичок, цифрові можливості для різних категорій населення та для різних галузей, зміни підходів до навчання в умовах цифровізації, а також психологічні наслідки цифровізації.
Scutigera coleoptrata Linnaeus 1758
Creators: name: Zapparoli, Marzio
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy

description: 1. Scutigera coleoptrata (Linnaeus, 1758)
 1) Scutigera coleoptrata Lin. [sic]: A. Costa 1885: 9.
 2) Scutigera coleoptrata (L.): Silvestri 1898: 681.
 3) Scutigera coleoptrata L. [sic]: Verhoeff 1925a: 656.
 4) Scutigera coleoptrata L. [sic]: Attems 1949: 118.
 5) Scutigera coleoptrata (L.): Matic 1971: 255.
 6) Scutigera coleoptrata Linneus [sic]: Puddu & Pirodda 1974: 177. 7) Scutigera coleoptrata (Linnaeus, 1758): Minelli 1978a: 155. 8) Scutigera coleoptrata Linnaeus, 1758 [sic]: Cassola 1982: 670, 708. 9) Scutigera coleoptrata (Linnaeus, 1758): Minelli 1983a: 15. 10) Scutigera coleoptrata (L., 1758): Minelli 1983b: 408.
 11) Scutigera coleoptrata L. [sic]: De Miranda Restivo & Guaita 1986: 34. 12) Scutigera coleoptrata (Linnaeus, 1758): Minelli et al. 1994: 500. 13) Scutigera coleoptrata: Foddai et al. 1994: 14.
 14) Scutigera coleoptrata (Linnaeus, 1758): Foddai et al. 1995: 5. 15) Scutigera coleoptrata (Linnaeus, 1758): Foddai et al. 1996: 360, tab. I. 16) Scutigera coleoptrata (Linnaeus, 1758): Zapparoli & Minelli 2005: CD. 17) Scutigera sp.: Lana et al. 2006: 44.
 18) Scutigera coleoptrata (Linnaeus, 1758): Grafitti 2007c: 70.
 19) Scutigera coleoptrata (Linnaeus, 1758): Grafitti & Merella 2008: 88, 91.
description: Published as part of Zapparoli, Marzio, 2009, An annotated catalogue of the epigeic and cave centipedes (Chilopoda) of Sardinia *, pp. 56-168 in Zootaxa 2318 on pages 60-61, DOI: 10.5281/zenodo.192026
Brücken nach Prag. Deutschsprachige Literatur im kulturellen Kontext der Donaumonarchie und der Tschechoslowakei.
Creators: name: Schutte, Andrea
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 3 (2003)
Bibliographie zur Geschichte Pommerns. Bibliografia historii Pomorza Zachodniego. 1994-1996
Creators: name: Hackmann, Jörg
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 4 (2003)
Osedax estcourti Berman & Hiley & Read & Rouse 2024, n. sp.
Creators: name: Berman, Gabriella H.
name: Hiley, Avery S.
name: Read, Geoffrey B.
name: Rouse, Greg W.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Sabellida
Siboglinidae
Osedax
Osedax estcourti

description: Osedax estcourti n. sp.
Fig. 7A, B, 8A
Material examined. Holotype: NIWA 159436 female (GenBank COI sequence ON211943, 18S = ON220129, 28S = ON220739, H3 = ON254809), collected from a whale skull (most likely a southern minke whale Balaenoptera bonaerensis Burmeister, 1867 at 390–393 m depth on the Pukaki Rise SE of New Zealand (49.121° S; 172.136° E). Scientific trawl TAN1614, Station 9, R / V Tangaroa, December 1, 2016. Fixed and preserved in 95% ethanol.
Diagnosis and description. Live animals red, in transparent tubes on whale skull (Fig. 7A). Fixed roots and palps desiccated (Fig. 7B). Trunk not visible (Fig. 7B). Apinnulate palps are brown, approximately 3 mm long and 1 mm wide (Fig. 7B). Four palps contained inside translucent tube (Fig. 7B). Roots approximately 3 mm long, 1.5 mm wide, brown, still partially embedded in white bone (Fig. 7B). No dwarf males observed. The rDNC diagnosis for Osedax estcourti n. sp. was recovered as: ‘C’ at site 348, ‘G’ at site 579, and ‘G’ at site 606 of mitochondrial COI.
Distribution. Osedax estcourti n. sp. was recovered from a whale fall on the Pukaki Rise off SE New Zealand at 390– 393 m.
Etymology. Osedax estcourti n. sp. is named in remembrance of Dr. Ivan Neil Estcourt (1938–1981), benthic ecologist and the first polychaetologist researcher at the former New Zealand Oceanographic Institute (now NIWA).
Remarks. Osedax estcourti n. sp. belongs to Clade II, an apinnulate clade. Osedax estcourti n. sp. was recovered as the sister species to Osedax ventana, known from 2,898 m in Monterey Bay (California, USA), though the relationship was not well supported, with poor bootstrap support (Fig. 2). The minimum interspecific distance between O. estcourti and O. ventana was 14.6% (Table 3), thus providing ample molecular evidence for it to be a new species. Two other specimens were destroyed for sequencing (ON211941, ON211942). The new species had a 1.5% maximum intraspecific pairwise distance among the three available sequences, though all three sequences showed the rDNC diagnostic bases. The haplotype network for Osedax estcourti n. sp. showed three distinct haplotypes, one for each sequence with a maximum of 10 nucleotide substitutions (Fig. 8A). Specimens were not observed alive, however images of the whale skull at the time it was collected show red Osedax coating the surface (Fig. 7A), suggesting that living Osedax estcourti n. sp. may have red palps.
description: Published as part of Berman, Gabriella H., Hiley, Avery S., Read, Geoffrey B. & Rouse, Greg W., 2024, New Species of Osedax (Siboglinidae: Annelida) from New Zealand and the Gulf of Mexico, pp. 337-352 in Zootaxa 5443 (3) on page 346, DOI: 10.11646/zootaxa.5443.3.2, http://zenodo.org/record/11045291
Quark-Lepton Symmetry and Quartification in Five Dimensions
Creators: name: McDonald, Kristian L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We outline some features of higher dimensional models possessing a Quark-Lepton (QL) symmetry. The QL symmetric model in five dimensions is discussed, with particular emphasis on the use of split fermions. An interesting fermionic geography which utilises the QL symmetry to suppress the proton decay rate and to motivate the flavor differences in the quark and leptonic sectors is considered. We discuss the quartification model in five dimensions and contrast the features of this model with traditional four dimensional constructs.
description: Talk given at the Festschrift in honour of Girish Joshi and Bruce McKellar, to appear in a special edition of IJMPA
Local superfluid densities probed via current-induced superconducting phase gradients
Creators: name: Hopkins, David S.
name: Pekker, David
name: Wei, Tzu-Chieh
name: Goldbart, Paul M.
name: Bezryadin, Alexey
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have developed a superconducting phase gradiometer consisting of two parallel DNA-templated nanowires connecting two thin-film leads. We have ramped the cross current flowing perpendicular to the nanowires, and observed oscillations in the lead-to-lead resistance due to cross-current-induced phase differences. By using this gradiometer we have measured the temperature and magnetic field dependence of the superfluid density and observed an amplification of phase gradients caused by elastic vortex displacements. We examine our data in light of Miller-Bardeen theory of dirty superconductors and a microscale version of Campbell's model of field penetration.
description: 5 pages, 6 figures
Hole - Nuclear Spin Interaction in Quantum Dots
Creators: name: Eble, B.
name: Testelin, C.
name: Desfonds, P.
name: Bernardot, F.
name: Balocchi, A.
name: Amand, T.
name: Miard, A.
name: Lemaitre, A.
name: Marie, X.
name: Chamarro, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have measured the carrier spin dynamics in p-doped InAs/GaAs quantum dots by pump-probe photo-induced circular dichroism and time-resolved photoluminescence experiments. We show that the hole spin dephasing is controlled by the hyperfine interaction between hole and nuclear spins. In the absence of external magnetic field, we find a characteristic hole spin dephasing time of 15 ns, in close agreement with our calculations based on dipole-dipole coupling between the hole and the quantum dot nuclei. Finally we demonstrate that a small external magnetic field, typically 10 mT instead of 200 mT for the case of electrons, quenches the hyperfine hole spin dephasing.
description: 17 pages, 3 figures, submitted to Phys. Rev. Lett
Wide-field magneto-optical microscope to access quantitative magnetization dynamics with femtosecond temporal and sub-micrometer spatial resolution
Creators: name: Steinbach, Felix
name: Schick, Daniel
name: Schmising, Clemens von Korff
name: Yao, Kelvin
name: Borchert, Martin
name: Engel, Dieter
name: Eisebitt, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We introduce a wide-field magneto-optical microscope to probe magnetization dynamics with femtosecond temporal and sub-micrometer spatial resolution. We carefully calibrate the non-linear dependency between the magnetization of the sample and the detected light intensity by determining the absolute values of the magneto-optical polarization rotation. With that, an analytical transfer function is defined to directly map the recorded intensity to the corresponding magnetization, which results in significantly reduced acquisition times and relaxed computational requirements. The performance of the instrument is characterized by probing the magnetic all-optical switching dynamics of GdFe in a pump-probe experiment. The high spatial resolution of the microscope allows for accurately subdividing the laser-excited area into different fluence-regions in order to capture the strongly non-linear magnetization dynamics as a function of the optical pump intensity in a single measurement.
Bogusław Czechowicz, Visus Silesiae. Treści i funkcje ideowe kartografii Śląska XVI-XVIII wieku
Creators: name: Irgang, Winfried
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2009

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 58 Nr. 3 (2009): Vorträge der Sektion "Osteuropa" auf dem 37. Deutschen Reichshistorikertag
Anomalous dimensions at large charge for $U(N)\times U(N)$ theory in three and four dimensions
Creators: name: Jack, I.
name: Jones, D. R. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently it was shown that the scaling dimension of the operator $ϕ^n$ in $λ(\barϕϕ)^2$ theory may be computed semiclassically at the Wilson-Fisher fixed point in $d=4-ε$, for generic values of $λn$, and this was verified to two loop order in perturbation theory at leading and subleading $n$. This result was subsequently generalised to operators of fixed charge $Q$ in $O(N)$ theory and verified up to four loops in perturbation theory at leading and subleading $Q$. More recently, similar semiclassical calculations have been performed for the classically scale-invariant $U(N)\times U(N)$ theory in four dimensions, and verified up to two loops, once again at leading and subleading $Q$. Here we extend this verification to four loops. We also consider the corresponding classically scale-invariant theory in three dimensions, similarly verifying the leading and subleading semiclassical results up to four loops in perturbation theory.
description: 8 figures, 5 tables, 24 pages. arXiv admin note: text overlap with arXiv:2101.09820