cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Study of the neutron dose equivalent at the HIRFL deep tumor therapy terminal
Creators: name: Xu, Jun-Kui
name: Su, You-Wu
name: Li, Wu-Yuan
name: Yan, Wei-Wei
name: Li, Zong-Qiang
name: Mao, Wang
name: Pang, Cheng-Guo
name: Xu, Chong
Publisher: name: arXiv
Year: 2017
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: The secondary neutron fields at the deep tumor therapy terminal at HIRFL (Heavy Ion Research Facility in Lanzhou) were investigated. The distributions of neutron ambient dose equivalent were measured with a FHT762 Wendi-II neutron ambient dose equivalent meter as the 12C ions with energies of 165, 207, 270, and 350 MeV/u bombarded on thick tissue-like targets. The thickness of targets used in experiments is larger than the range of the carbon ions. The neutron spectra and dose equivalent is simulated by using FLUKA code, and the results agree well with the experimental data. The experiment results showed that the neutron dose produced by fragmentation reactions in tissue can be neglected in carbon-ion therapy, even considering their enhanced biological effectiveness. These results are also valuable for radiation protection, especially in the shielding design of high energy heavy ion medical machines.
A direct extraction of the Sivers distributions from spin asymmetries in pion and kaon leptoproduction
Creators: name: Martin, Anna
name: Bradamante, Franco
name: Barone, Vincenzo
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a point-by-point determination of the Sivers distributions from hadron leptoproduction data. The method, which relies on some simple assumptions, is based on the combined analysis of proton and deuteron observables. We make use of the single-spin asymmetries measured by COMPASS in semi-inclusive deep inelastic scattering of 160 GeV muons on transversely polarized proton and deuteron targets.
description: 5 figures
Modeling and control of modern wind turbine systems: An introduction
Creators: name: Dirscherl, Christian
name: Hackl, Christoph M.
name: Schechner, Korbinian
Publisher: name: arXiv
Year: 2017
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This chapter provides an introduction to the modeling and control of power generation from wind turbine systems. In modeling, the focus is on the electrical components: electrical machine (e.g. permanent-magnet synchronous generators), back-to-back converter (consisting of machine-side and grid-side converter sharing a common DC-link), mains filters and ideal (balanced) power grid. The aerodynamics and the torque generation of the wind turbine are explained in simplified terms using a so-called power coefficient. The overall control system is considered. In particular, the phase-locked loop system for grid-side voltage orientation, the nonlinear speed control system for the generator (and turbine), and the non-minimum phase DC-link voltage control system are discussed in detail; based on a brief derivation of the underlying machine-side and grid-side current control systems. With the help of the power balance of the wind turbine, the operation management and the control of the power flow are explained. Concluding simulation results illustrate the overall system behavior of a controlled wind turbine with a permanent-magnet synchronous generator.
description: 75 pages, 46 figures, 5 tables, English translation of book chapter "Modellierung und Regelung von modernen Windkraftanlagen: Eine Einf\"uhrung", pp. 1540-1614 in Dierk Schr\"oder, "Elektrische Antriebe - Regelung von Antriebssystemen", Springer-Vieweg, 2015
Performance Analysis and Compensation of Joint TX/RX I/Q Imbalance in Differential STBC-OFDM
Creators: name: Chen, Lei
name: Helmy, Ahmed G.
name: Yue, Guangrong
name: Li, Shaoqian
name: Al-Dhahir, Naofal
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Differential space time block coding (STBC) achieves full spatial diversity and avoids channel estimation overhead. Over highly frequency-selective channels, STBC is integrated with orthogonal frequency division multiplexing (OFDM) to efficiently mitigate intersymbol interference effects. However, low-cost implementation of STBC-OFDM with direct-conversion transceivers is sensitive to In-phase/Quadrature-phase imbalance (IQI). In this paper, we quantify the performance impact of IQI at both the transmitter and receiver radio frequency front-ends on differential STBC-OFDM systems which has not been investigated before in the literature. In addition, we propose a widely-linear compensation algorithm at the receiver to mitigate the performance degradation caused by the IQI at the transmitter and receiver ends. Moreover, a parameter-based generalized algorithm is proposed to extract the IQI parameters and improve the performance under high-mobility. The adaptive compensation algorithms are blind and work in a decision-directed manner without using known pilots or training sequences. Numerical results show that our proposed compensation algorithms can effectively mitigate IQI in differential STBC-OFDM.
description: IEEE Transactions on Vehicular Technology, 15 pages, 11 figures
Sub-bandgap voltage electroluminescence and magneto-oscillations in a WSe2 light-emitting van der Waals heterostructure
Creators: name: Binder, J.
name: Withers, F.
name: Molas, M. R.
name: Faugeras, C.
name: Nogajewski, K.
name: Watanabe, K.
name: Taniguchi, T.
name: Kozikov, A.
name: Geim, A. K.
name: Novoselov, K. S.
name: Potemski, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on experimental investigations of an electrically driven WSe2 based light-emitting van der Waals heterostructure. We observe a threshold voltage for electroluminescence significantly lower than the corresponding single particle band gap of monolayer WSe2. This observation can be interpreted by considering the Coulomb interaction and a tunneling process involving excitons, well beyond the picture of independent charge carriers. An applied magnetic field reveals pronounced magneto-oscillations in the electroluminescence of the free exciton emission intensity with a 1/B-periodicity. This effect is ascribed to a modulation of the tunneling probability resulting from the Landau quantization in the graphene electrodes. A sharp feature in the differential conductance indicates that the Fermi level is pinned and allows for an estimation of the acceptor binding energy.
description: Accepted for publication in Nano Letters
Elliptic boundary problems and the Boutet de Monvel calculus in Besov and Triebel--Lizorkin spaces
Creators: name: Johnsen, Jon
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35S15 (primary), 35J99 (secondary)

description: The Boutet de Monvel calculus of pseudo-differential boundary operators is generalised to the full scales of Besov and Triebel--Lizorkin spaces (though with finite integral exponents for the latter). The continuity and Fredholm properties proved here extend those previously obtained by Franke and Grubb, and the results on range complements of surjectively elliptic Green operators improve the earlier known, even for the classical spaces with $1
description: 48 pages. Accepted version, with update of two references. Published by Mathematica Scandinavica in 1996, and available at the journal's website: http://www.mscand.dk/article/view/12593/10609
Who With Whom And How?: Extracting Large Social Networks Using Search Engines
Creators: name: Siersdorfer, Stefan
name: Kemkes, Philipp
name: Ackermann, Hanno
name: Zerr, Sergej
Publisher: name: arXiv
Year: 2017
Subjects: subject: Social and Information Networks (cs.SI)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Social network analysis is leveraged in a variety of applications such as identifying influential entities, detecting communities with special interests, and determining the flow of information and innovations. However, existing approaches for extracting social networks from unstructured Web content do not scale well and are only feasible for small graphs. In this paper, we introduce novel methodologies for query-based search engine mining, enabling efficient extraction of social networks from large amounts of Web data. To this end, we use patterns in phrase queries for retrieving entity connections, and employ a bootstrapping approach for iteratively expanding the pattern set. Our experimental evaluation in different domains demonstrates that our algorithms provide high quality results and allow for scalable and efficient construction of social graphs.
Distributed Real-Time Sentiment Analysis for Big Data Social Streams
Creators: name: Rahnama, Amir Hossein Akhavan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (stat.ML)
subject: Computation and Language (cs.CL)
subject: Databases (cs.DB)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Big data trend has enforced the data-centric systems to have continuous fast data streams. In recent years, real-time analytics on stream data has formed into a new research field, which aims to answer queries about what-is-happening-now with a negligible delay. The real challenge with real-time stream data processing is that it is impossible to store instances of data, and therefore online analytical algorithms are utilized. To perform real-time analytics, pre-processing of data should be performed in a way that only a short summary of stream is stored in main memory. In addition, due to high speed of arrival, average processing time for each instance of data should be in such a way that incoming instances are not lost without being captured. Lastly, the learner needs to provide high analytical accuracy measures. Sentinel is a distributed system written in Java that aims to solve this challenge by enforcing both the processing and learning process to be done in distributed form. Sentinel is built on top of Apache Storm, a distributed computing platform. Sentinels learner, Vertical Hoeffding Tree, is a parallel decision tree-learning algorithm based on the VFDT, with ability of enabling parallel classification in distributed environments. Sentinel also uses SpaceSaving to keep a summary of the data stream and stores its summary in a synopsis data structure. Application of Sentinel on Twitter Public Stream API is shown and the results are discussed.
Spatial distribution of angular momentum inside the nucleon
Creators: name: Lorcé, Cédric
name: Mantovani, Luca
name: Pasquini, Barbara
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss in detail the spatial distribution of angular momentum inside the nucleon. We show that the discrepancies between different definitions originate from terms that integrate to zero. Even though these terms can safely be dropped at the integrated level, they have to be taken into account at the density level. Using the scalar diquark model, we illustrate our results and, for the first time, check explicitly that the equivalence between kinetic and canonical orbital angular momentum persists at the density level, as expected in a system without gauge degrees of freedom.
On the evaluation of vortical susceptibility of chiral condensate in QCD
Creators: name: Ikaeva, Ksenia
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The vortical susceptibility of chiral condensate is derived in two ways. First we obtain this using the spectrum of the Dirac operator in a metric of a curved space-time, which corresponds to rotation. Second we come to the expression for the susceptibility via the holographic approach to QCD.
description: 16 pages
Chebyshev, Legendre, Hermite and other orthonormal polynomials in D-dimensions
Creators: name: Doria, Mauro M.
name: Coelho, Rodrigo C. V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a general method to construct symmetric tensor polynomials in the D-dimensional Euclidean space which are orthonormal under a general weight. The D-dimensional Hermite polynomials are a particular case of the present ones for the case of a gaussian weight. Hence we obtain generalizations of the Legendre and of the Chebyshev polynomials in D dimensions that reduce to the respective well-known orthonormal polynomials in D=1 dimensions. We also obtain new D-dimensional polynomials orthonormal under other weights, such as the Fermi-Dirac, Bose-Einstein, Graphene equilibrium distribution functions and the Yukawa potential. We calculate the series expansion of an arbitrary function in terms of the new polynomials up to the fourth order and define orthonormal multipoles. The explicit orthonormalization of the polynomials up to the fifth order (N from 0 to 4) reveals an increasing number of orthonormalization equations that matches exactly the number of polynomial coefficients indication the correctness of the present procedure.
description: 20 pages
Optimizing phonon space in the phonon-coupling model
Creators: name: Tselyaev, V.
name: Lyutorovich, N.
name: Speth, J.
name: Reinhard, P. -G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a new scheme to select the most relevant phonons in the phonon-coupling model, named here time-blocking approximation (TBA). The new criterion, based on the phonon-nucleon coupling strengths rather than on $B(EL)$ values, is more selective and thus produces much smaller phonon spaces in TBA. This is beneficial in two respects: first, it curbs down the computational cost, and second, it reduces the danger of double counting in the expansion basis of TBA. We use here TBA in a form where the coupling strength is regularized to keep the given Hartree-Fock ground state stable. The scheme is implemented in an RPA and TBA code based on the Skyrme energy functional. We first explore carefully the cutoff dependence with the new criterion and can work out a natural (optimal) cutoff parameter. Then we use the freshly developed and tested scheme to a survey of giant resonances and low-lying collective states in six doubly magic nuclei looking also on the dependence of the results when varying the Skyrme parametrization.
description: 9 figures, 3 tables
Diz-me que Direitos de Autor queres e dir-te-ei que sociedade pretendes construir - Software Livre e Cultura Livre: o caso OpenLab ESEV
Creators: name: Gonçalves, Nelson
Publisher: name: Zenodo
Year: 2015

description: Gonçalves, N. A. F. (2015, February 21). Diz-me que Direitos de Autor queres e dir-te-ei que sociedade pretendes construir—Software Livre e Cultura Livre: O caso OpenLab ESEV [Invited speaker - Roundtable]. Seminário “Uma abordagem inicial à Legislação Cultural Portuguesa,” Viseu.
On Fienup Methods for Regularized Phase Retrieval
Creators: name: Pauwels, Edouard
name: Beck, Amir
name: Eldar, Yonina C.
name: Sabach, Shoham
Publisher: name: arXiv
Year: 2017
Subjects: subject: Information Theory (cs.IT)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Alternating minimization, or Fienup methods, have a long history in phase retrieval. We provide new insights related to the empirical and theoretical analysis of these algorithms when used with Fourier measurements and combined with convex priors. In particular, we show that Fienup methods can be viewed as performing alternating minimization on a regularized nonconvex least-squares problem with respect to amplitude measurements. We then prove that under mild additional structural assumptions on the prior (semi-algebraicity), the sequence of signal estimates has a smooth convergent behaviour towards a critical point of the nonconvex regularized least-squares objective. Finally, we propose an extension to Fienup techniques, based on a projected gradient descent interpretation and acceleration using inertial terms. We demonstrate experimentally that this modification combined with an $\ell_1$ prior constitutes a competitive approach for sparse phase retrieval.
Η νεοφιλελεύθερη μετάλλαξη του δημόσιου Πανεπιστημίου. Μεθοδολογική προσέγγιση
Creators: name: Καραγιώργου, Δέσποινα Διαμαντή
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: πανεπιστήμιο
νεοφιλελευθερισμός
αλλαγές
university
neoliberalism
changes

description: Το πανεπιστήμιο ανέκαθεν αποτελούσε αντικείμενο κοινωνικών συγκρούσεων καθώς ο ρόλος του είναι κομβικός στην οικονομία αλλά και την κοινωνική και πολιτική ζωή. Όλο και πιο έντονα, γίνεται φανερό πως τα κράτη επιχειρούν να μεταλλάξουν τον δημόσιο και δωρεάν χαρακτήρα της ανώτατης εκπαίδευσης και να μετατρέψουν την επιστήμη και ευρύτερα τη γνώση σε εμπόρευμα. Οι αλλαγές που συντελούνται στην τριτοβάθμια εκπαίδευση συνδέονται με τις εξελίξεις στον σύγχρονο καπιταλισμό. Στην παρούσα εργασία επιχειρείται η κριτική διερεύνηση των νεοφιλελεύθερων μεταβολών που πραγματοποιούνται εντός του δημόσιου πανεπιστημίου και των επιδράσεών τους στη διοίκηση, την επιστημονική έρευνα, τα προγράμματα σπουδών, τη διδασκαλία, τις παιδαγωγικές σχέσεις και τις σχέσεις μεταξύ των μελών της ακαδημαϊκής κοινότητας
description: The university has always been a subject of social conflicts since its role is crucial in the economy as well as in social and political life. It is becoming increasingly clear that states are attempting to transform the public and free character of higher education and turn science and knowledge more broadly into a commodity. The changes taking place in tertiary education are related to developments in modern capitalism. This thesis attempts a critical investigation of the neoliberal changes taking place within the public university and their effects on administration, scientific research, study programs, teaching, pedagogical relationships, and relationships among members of the academic community
Unravelling Mg$^{2+}$-RNA binding with atomistic molecular dynamics
Creators: name: Cunha, Richard A.
name: Bussi, Giovanni
Publisher: name: arXiv
Year: 2016
Subjects: subject: Biomolecules (q-bio.BM)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Interaction with divalent cations is of paramount importance for RNA structural stability and function. We here report a detailed molecular dynamics study of all the possible binding sites for Mg$^{2+}$ on a RNA duplex, including both direct (inner sphere) and indirect (outer sphere) binding. In order to tackle sampling issues, we develop a modified version of bias-exchange metadynamics which allows us to simultaneously compute affinities with previously unreported statistical accuracy. Results correctly reproduce trends observed in crystallographic databases. Based on this, we simulate a carefully chosen set of models that allows us to quantify the effects of competition with monovalent cations, RNA flexibility, and RNA hybridization. Our simulations reproduce the decrease and increase of Mg$^{2+}$ affinity due to ion competition and hybridization respectively, and predict that RNA flexibility has a site dependent effect. This suggests a non trivial interplay between RNA conformational entropy and divalent cation binding.
An initial-boundary value problem of the general three-component nonlinear Schrodinger equation with a 4x4 Lax pair on a finite interval
Creators: name: Yan, Zhenya
Publisher: name: arXiv
Year: 2017
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We investigate the initial-boundary value problem for the general three-component nonlinear Schrodinger (gtc-NLS) equation with a 4x4 Lax pair on a finite interval by extending the Fokas unified approach. The solutions of the gtc-NLS equation can be expressed in terms of the solutions of a 4x4 matrix Riemann-Hilbert (RH) problem formulated in the complex k-plane. Moreover, the relevant jump matrices of the RH problem can be explicitly found via the three spectral functions arising from the initial data, the Dirichlet-Neumann boundary data. The global relation is also established to deduce two distinct but equivalent types of representations (i.e., one by using the large k of asymptotics of the eigenfunctions and another one in terms of the Gelfand-Levitan-Marchenko (GLM) method) for the Dirichlet and Neumann boundary value problems. Moreover, the relevant formulae for boundary value problems on the finite interval can reduce to ones on the half-line as the length of the interval approaches to infinity. Finally, we also give the linearizable boundary conditions for the GLM representation.
description: 58 pages, 3 figures
A Hybrid Network/Grid Model of Urban Morphogenesis and Optimization
Creators: name: Raimbault, Juste
name: Banos, Arnaud
name: Doursat, René
Publisher: name: arXiv
Year: 2016
Subjects: subject: Multiagent Systems (cs.MA)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We describe a hybrid agent-based model and simulation of urban morphogenesis. It consists of a cellular automata grid coupled to a dynamic network topology. The inherently heterogeneous properties of urban structure and function are taken into account in the dynamics of the system. We propose various layout and performance measures to categorize and explore the generated configurations. An economic evaluation metric was also designed using the sensitivity of segregation models to spatial configuration. Our model is applied to a real-world case, offering a means to optimize the distribution of activities in a zoning context.
description: 10 pages; 10 Figures
Self-corrected chip-based dual-comb spectrometer
Creators: name: Hébert, Nicolas Bourbeau
name: Genest, Jérôme
name: Deschênes, Jean-Daniel
name: Bergeron, Hugo
name: Chen, George Y.
name: Khurmi, Champak
name: Lancaster, David G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a dual-comb spectrometer based on two passively mode-locked waveguide lasers integrated in a single Er-doped ZBLAN chip. This original design yields two free-running frequency combs having a high level of mutual stability. We developed in parallel a self-correction algorithm that compensates residual relative fluctuations and yields mode-resolved spectra without the help of any reference laser or control system. Fluctuations are extracted directly from the interferograms using the concept of ambiguity function, which leads to a significant simplification of the instrument that will greatly ease its widespread adoption. Comparison with a correction algorithm relying on a single-frequency laser indicates discrepancies of only 50 attoseconds on optical timings. The capacities of this instrument are finally demonstrated with the acquisition of a high-resolution molecular spectrum covering 20 nm. This new chip-based multi-laser platform is ideal for the development of high-repetition-rate, compact and fieldable comb spectrometers in the near- and mid-infrared.
Derivation of Semiclassical Kinetic Theory in the Presence of Non-Abelian Berry Curvature
Creators: name: Bettelheim, Eldad
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In quantum mechanics it is often required to describe in a semiclassical approximation the motion of particles moving within a given energy band. Such a representation leads to the appearance of an analogues of fictitious forces in the semiclassical equations of motion associated with the Berry curvature. The purpose of this paper is to derive systematically the kinetic Boltzmann equations displaying these effects in the case that the band is degenerate, and as such the Berry curvature is non-Abelian. We use the formalism of phase-space quantum mechanics to derive the results.
Mixed spin-1/2 and 3/2 Ising model with multi-spin interactions on a decorated square lattice
Creators: name: Štubňa, Viliam
name: Jaščur, Michal
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A mixed spin-1/2 and spin-3/2 Ising model on a decorated square lattice with a nearest- neighbor interaction, next-nearest-neighbor bilinear interaction, three-site four-spin in- teraction and single-ion anisotropy is exactly investigated using a generalized decoration- iteration transformation, Callen-Suzuki identity and differential operator technique. The ground-state and finite-temperature phase boundaries are obtained by identifying all rel- evant phases corresponding to minimum internal or free energy of the system. The thermal dependencies of magnetization, correlation functions, entropy and specific heat are also calculated exactly and the most interesting cases are discussed in detail.
description: 14 pages, 10 figures
Lepton Portal Limit of Inert Higgs Doublet Dark Matter with Radiative Neutrino Mass
Creators: name: Borah, Debasish
name: Sadhukhan, Soumya
name: Sahoo, Shibananda
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study an extension of the Inert Higgs Doublet Model (IHDM) by three copies of right handed neutrinos and heavy charged leptons such that both the inert Higgs doublet and the heavy fermions are odd under the $Z_2$ symmetry of the model. The neutrino masses are generated at one loop in the scotogenic fashion. Assuming the neutral scalar of the inert Higgs to be the dark matter candidate, we particularly look into the region of parameter space where dark matter relic abundance is primarily governed by the inert Higgs coupling with the leptons. This corresponds to tiny Higgs portal coupling of dark matter as well as large mass splitting within different components of the inert Higgs doublet suppressing the coannihilations. Such lepton portal couplings can still produce the correct relic abundance even if the Higgs portal couplings are arbitrarily small. Such tiny Higgs portal couplings may be responsible for suppressed dark matter nucleon cross section as well as tiny invisible branching ratio of the standard model Higgs, to be probed at ongoing and future experiments. We also briefly discuss the collider implications of such a scenario.
description: 10 pages, 7 figures
... Neüe Teütsche gesang nach art der welschen Madrigalien un[d] Canzonetten, mit 4. 5. 6. unnd 8. Stimmen
Creators: name: Haßler, Hans Leo
Publisher: name: bey Valentin Schönigkh
Year: 1596

description: Stimmen: Discant, Alt, Tenor, Bass, Quinta Vox, Sexta Vox, Septima Vox, Octaua Vox
description: durch Hanns Leo Hasler, von Nürmberg ... von newem componirt, und in Truck verfertiget
description: Die 7. u. 8. Stimmen sind mit der 5. bzw. 6. zusammen gedruckt
description: Jeweils am Ende der Stimmhefte: Register der deütschen Gesang
... Madrigali à 5. 6. 7. & 8. voci di Giouanne Leone Hasler, Organista dell Illustriss: signor Octauiano secondo Fugger ... : nouamente composti & dati in luce
Creators: name: Haßler, Hans Leo
Publisher: name: apresso Valentin Schönigk
Year: 1596

description: Stimmen: Canto, Alto, Tenore, Basso, Qvinto, Sesto, Settimo, Ottavo
description: Die 7. u. 8. Stimme sind mit der 5. bzw. 6. zusammen gedruckt
Periodic orbits in the restricted three-body problem and Arnold's $J^+$-invariant
Creators: name: Cieliebak, Kai
name: Frauenfelder, Urs
name: van Koert, Otto
Publisher: name: arXiv
Year: 2017
Subjects: subject: Symplectic Geometry (math.SG)
subject: Dynamical Systems (math.DS)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We apply Arnold's theory of generic smooth plane curves to Stark-Zeeman systems. This is a class of Hamiltonian dynamical systems that describes the dynamics of an electron in an external electric and magnetic field, and includes many systems from celestial mechanics. Based on Arnold's $J^+$-invariant, we introduce invariants of periodic orbits in planar Stark-Zeeman systems and study their behaviour.
description: 36 Pages, 16 Figures
Statistical and Computational Tradeoff in Genetic Algorithm-Based Estimation
Creators: name: Rizzo, Manuel
name: Battaglia, Francesco
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: When a Genetic Algorithm (GA), or a stochastic algorithm in general, is employed in a statistical problem, the obtained result is affected by both variability due to sampling, that refers to the fact that only a sample is observed, and variability due to the stochastic elements of the algorithm. This topic can be easily set in a framework of statistical and computational tradeoff question, crucial in recent problems, for which statisticians must carefully set statistical and computational part of the analysis, taking account of some resource or time constraints. In the present work we analyze estimation problems tackled by GAs, for which variability of estimates can be decomposed in the two sources of variability, considering some constraints in the form of cost functions, related to both data acquisition and runtime of the algorithm. Simulation studies will be presented to discuss the statistical and computational tradeoff question.
description: 17 pages, 5 figures
Point-contact studies of high-temperature superconductor $\rm YBa_2Cu_3O_{7-δ}$
Creators: name: Yanson, I. K.
name: Rybal'chenko, L. F.
name: Fisun, V. V.
name: Bobrov, N. L.
name: Kirzhner, V. M.
name: Tret'yakov, Yu. D.
name: Kaul', A. R.
name: Graboi, I. E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Point-contacts formed by the high-temperature superconductor $\rm YBa_2Cu_3O_{7-δ}$ prepared by cryochemical technique, and a noble metal Ag or Cu) are investigated. The maximum value of the energy gap $Δ\simeq 40~meV$ and the ratio $2Δ/kT_c\simeq 12$ are obtained. It is found that along certain crystallographic axes of the superconductor under investigation, the electrical resistivity $\lesssim 10^{-5} Ω\cdot cm$.
description: 5 pages, 3 figures
Highly anisotropic superconducting gaps and possible evidence of antiferromagnetic order in FeSe single crystals
Creators: name: Chen, Guan-Yu
name: Zhu, Xiyu
name: Yang, Huan
name: Wen, Hai-Hu
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Specific heat has been measured in FeSe single crystals down to 0.414 K under magnetic fields up to 16 T. A sharp specific heat anomaly at about 8.2 K is observed and is related to the superconducting transition. Another jump of specific heat is observed at about 1.08 K which may either reflect an antiferromagnetic transition of the system or a superconducting transition arising from Al impurity. We would argue that this anomaly in low temperature region may be the long sought antiferromagnetic transition in FeSe. Global fitting in wide temperature region shows that the models with a single contribution with isotropic s-wave, anisotropic s-wave, and d-wave gap all do not work well, nor the two isotropic s-wave gaps. We then fit the data by a model with two components in which one has the gap function of $Δ_0(1+αcos2θ)$. To have a good global fitting and the entropy conservation for the low temperature transition, we reach a conclusion that the gap minimum should be smaller than 0.15 meV ($α$ = 0.9 to 1), indicating that the superconducting gap(s) are highly anisotropic. Our results are very consistent with the gap structure derived recently from the scanning tunneling spectroscopy measurements and yield specific heat contributions of about 32\% weight from the hole pocket and 68\% from the electron pockets.
description: 8 pages, 5 figures
Coherent libration to coherent rotational dynamics via chimeralike states and clustering in Josephson Junction array
Creators: name: Mishra, Arindam
name: Saha, Suman
name: Hens, Chittaranjan
name: Roy, Prodyot K.
name: Bose, Mridul
name: Louodop, Patrick
name: Cerdeira, Hilda A.
name: Dana, Syamal K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: An array of excitable Josephson junctions under global mean-field interaction and a common periodic forcing shows emergence of two important classes of coherent dynamics, librational and rotational motion in the weaker and stronger coupling limits, respectively, with transitions to chimeralike states and clustered states in the intermediate coupling range. In this numerical study, we use the Kuramoto complex order parameter and introduce two measures, a libration index and a clustering index to characterize the dynamical regimes and their transition and locate them in a parameter plane.
Discovery of a new branch of the Taurid meteoroid stream as a real source of potentially hazardous bodies
Creators: name: Spurný, P.
name: Borovička, J.
name: Mucke, H.
name: Svoreň, J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Taurid meteor shower produces prolonged but usually low activity every October and November. In some years, however, the activity is significantly enhanced. Previous studies based on long-term activity statistics concluded that the enhancement is caused by a swarm of meteoroids locked in 7:2 resonance with Jupiter. Here we present precise data on 144 Taurid fireballs observed by new digital cameras of the European Fireball Network in the enhanced activity year 2015. Orbits of 113 fireballs show common characteristics and form together a well defined orbital structure, which we call new branch. We found that this branch is characterized by longitudes of perihelia lying between 155.9-160o and latitudes of perihelia between 4.2-5.7o. Semimajor axes are between 2.23-2.28 AU and indeed overlap with the 7:2 resonance. Eccentricities are in wide range 0.80-0.90. The orbits form a concentric ring in the inner solar system. The masses of the observed meteoroids were in a wide range from 0.1 g to more than 1000 kg. We found that all meteoroids larger than 300 g were very fragile, while those smaller than 30 g were much more compact. Based on orbital characteristics, we argue that asteroids 2015 TX24 and 2005 UR, both of diameters 200-300 meters, are direct members of the new branch. It is therefore very likely that the new branch contains also numerous still not discovered objects of decameter or even larger size. Since asteroids of sizes of tens to hundreds meters pose a treat to the ground even if they are intrinsically weak, impact hazard increases significantly when the Earth encounters the Taurid new branch every few years. Further studies leading to better description of this real source of potentially hazardous objects, which can be large enough to cause significant regional or even continental damage on the Earth, are therefore extremely important.
description: 24 pages, 22 figures, 5 tables. Accepted in Astronomy and Astrophysics
Penrose junction conditions extended: impulsive waves with gyratons
Creators: name: Podolsky, Jiri
name: Svarc, Robert
name: Steinbauer, Roland
name: Sämann, Clemens
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 83C15, 83C35, 83C10

description: We generalize the classical junction conditions for constructing impulsive gravitational waves by the Penrose "cut and paste" method. Specifically, we study nonexpanding impulses which propagate in spaces of constant curvature with any value of the cosmological constant (that is Minkowski, de Sitter, or anti-de Sitter universes) when additional off-diagonal metric components are present. Such components encode a possible angular momentum of the ultra-relativistic source of the impulsive wave - the so called gyraton. We explicitly derive and analyze a specific transformation that relates the distributional form of the metric to a new form which is (Lipschitz) continuous. Such a transformation automatically implies an extended version of the Penrose junction conditions. It turns out that the conditions for identifying points of the background spacetime across the impulse are the same as in the original Penrose "cut and paste" construction, but their derivatives now directly represent the influence of the gyraton on the axial motion of test particles. Our results apply both for vacuum and nonvacuum solutions of Einstein's field equations, and can also be extended to other theories of gravity.
description: 15 pages, 2 figures
Abelian Higgs model with charge conjugate boundary conditions
Creators: name: Woloshyn, R. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The abelian Higgs model is studied on the lattice with charge conjugate boundary conditions. A locally gauge invariant operator for the charged scalar field is constructed and the charged scalar particle mass is calculated in the Coulomb phase of the lattice model. Agreement is found with the mass calculated in Coulomb gauge. The gauge invariant scalar field operator is used to calculate the Higgs boson mass in the Higgs region and to show that the charged particle disappears from the spectrum in the confined regime.
description: 7 pages, typos corrected
Upper tails for arithmetic progressions in random subsets
Creators: name: Warnke, Lutz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We study the upper tail of the number of arithmetic progressions of a given length in a random subset of {1,...,n}, establishing exponential bounds which are best possible up to constant factors in the exponent. The proof also extends to Schur triples, and, more generally, to the number of edges in random induced subhypergraphs of `almost linear' k-uniform hypergraphs.
description: 28 pages. To appear in Israel Journal of Mathematics
Numerical aspects of Giant Impact simulations
Creators: name: Reinhardt, Christian
name: Stadel, Joachim
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this paper we present solutions to three short comings of Smoothed Particles Hydrodynamics (SPH) encountered in previous work when applying it to Giant Impacts. First we introduce a novel method to obtain accurate SPH representations of a planet's equilibrium initial conditions based on equal area tessellations of the sphere. This allows one to imprint an arbitrary density and internal energy profile with very low noise which substantially reduces computation because these models require no relaxation prior to use. As a consequence one can significantly increase the resolution and more flexibly change the initial bodies to explore larger parts of the impact parameter space in simulations. The second issue addressed is the proper treatment of the matter/vacuum boundary at a planet's surface with a modified SPH density estimator that properly calculates the density stabilizing the models and avoiding an artificially low density atmosphere prior to impact. Further we present a novel SPH scheme that simultaneously conserves both energy and entropy for an arbitrary equation of state. This prevents loss of entropy during the simulation and further assures that the material does not evolve into unphysical states. Application of these modifications to impact simulations for different resolutions up to $6.4 \cdot 10^6$ particles show a general agreement with prior result. However, we observe resolution dependent differences in the evolution and composition of post collision ejecta. This strongly suggests that the use of more sophisticated equations of state also demands a large number of particles in such simulations.
Ruinenia diospyri Q. M. Wang, F. Y. Bai, M. Groenew. & Boekhout 2020, sp. nov.
Creators: name: Li, A. - H.
name: Yuan, F. - X.
name: Groenewald, M.
name: Bensch, K.
name: Yurkov, A. M.
name: Li, K.
name: Han, P. - J.
name: Guo, L. - D.
name: Aime, M. C.
name: Sampaio, J. P.
name: Jindamorakot, S.
name: Turchetti, B.
name: Inacio, J.
name: Fungsin, B.
name: Wang, Q. - M.
name: Bai, F. - Y.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricostilbomycetes
Agaricostilbales
Ruineniaceae
Ruinenia
Ruinenia diospyri

description: Ruinenia diospyri Nakase, Tsuzuki, F.L. Lee, Jindam. & M. Takash. ex Q.M. Wang, F.Y. Bai, M. Groenew. & Boekhout, sp. nov. MycoBank MB831745.
For description see J. Gen. Appl. Microbiol. 51(5): 280 (2005).
 Holotype: JCM 12157 (preserved in a metabolically inactive state).
 Synonyms: Sporobolomyces diospyri Nakase, Tsuzuki, F.L. Lee, Jindam. & M. Takash. J. Gen. Appl. Microbiol. 51(5): 280 (2005), as ‘ diospyroris ’, nom. inval., Art. 40.7 (Shenzhen).
 = Ruinenia diospyri Nakase, Tsuzuki, F.L. Lee, Jindam. & M. Takash. ex Q.M. Wang, F.Y. Bai, M. Groenew. & Boekhout, Stud. Mycol. 81: 171 (2015), as ‘ diospyroris ‘, nom. inval., Art. 40.7 (Shenzhen).
description: Published as part of Li, A. - H., Yuan, F. - X., Groenewald, M., Bensch, K., Yurkov, A. M., Li, K., Han, P. - J., Guo, L. - D., Aime, M. C., Sampaio, J. P., Jindamorakot, S., Turchetti, B., Inacio, J., Fungsin, B., Wang, Q. - M. & Bai, F. - Y., 2020, Diversity and phylogeny of basidiomycetous yeasts from plant leaves and soil: Proposal of two new orders, three new families, eight new genera and one hundred and seven new species, pp. 17-140 in Studies In Mycology 96 on page 137, DOI: 10.1016/j.simyco.2020.01.002, http://zenodo.org/record/10497182
Measuring ionizing radiation in the atmosphere with a new balloon-borne detector
Creators: name: Aplin, Karen L
name: Briggs, Aaron A
name: Harrison, R Giles
name: Marlton, Graeme J
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Increasing interest in energetic particle effects on weather and climate has motivated development of a miniature scintillator-based detector intended for deployment on meteorological radiosondes or unmanned airborne vehicles. The detector was calibrated with laboratory gamma sources up to 1.3 MeV, and known gamma peaks from natural radioactivity of up to 2.6 MeV. The specifications of our device in combination with the performance of similar devices suggest that it will respond to up to 17 MeV gamma rays. Laboratory tests show the detector can measure muons at the surface, and it is also expected to respond to other ionizing radiation including, for example, protons, electrons (>100 keV) and energetic helium nuclei from cosmic rays or during space weather events. Its estimated counting error is about 10%. Recent tests, when the detector was integrated with a meteorological radiosonde system, and carried on a balloon to ~25 km altitude, identified the transition region between energetic particles near the surface, which are dominated by terrestrial gamma emissions, to higher-energy particles in the free troposphere.
PDM (Probes Distance Meter), Distance Measuring Instrument by Using Ultrasonic Propagation between Probes
Creators: name: Qomarrullah, Ridlo
name: Mappuji, Abdurrachman
name: Apriliyanto, Wahyu
name: Julianto, Ahmad Harist
name: Syarafina, Farahiyah
name: Iswandi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: The innovation process is always required to produce more advanced technology and increasing productivity. PDM (Probes Distance Meter) comes as a technological innovation in measurement, PDM is a digital distance measuring instrument uses a pair of probes. PDM consists of ultrasonic transducers, a microcontroller, and screen which shows the measurement result. PDM utilizes ultrasonic wave principle by using two probes as reference points. A microcontroller is used for performing calculation that uses the distance equation. Innovation and Excellence of PDM are simple, ergonomic, modern, and able to show the measurement result automatically. PDM has additional features those are the storage media to save the measurement result with a micro-SD card, sound generation, and braille for the blinds. Those tools are expected to be suitable for common people, academics, or technicians to perform the measurement. The results from the laboratory testing show that the prototype of PDM has resolution of 1 cm, full scale of 200 cm, 11.1% repeatability, 77.6% accuracy, and a nonlinearity parameter of 0.16%. PDM is in development and it is potential to be a model of digital measuring instrument in the future that is simple, fast, and its additional features are capable to be used by the blind.
description: The pre-print paper from International Conference on Science and Technology 2015 Yogyakarta
Cross sections for the reactions $e^+ e^-\to K^0_S K^0_Lπ^0$, $K^0_S K^0_Lη$, and $K^0_S K^0_Lπ^0π^0$ from events with initial-state radiation
Creators: name: The BABAR Collaboration
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the processes $e^+ e^-\to K^0_S K^0_Lπ^0γ$, $K^0_S K^0_Lηγ$, and $K^0_S K^0_Lπ^0π^0γ$, where the photon is radiated from the initial state, providing cross section measurements for the hadronic final states over a continuum of center-of-mass energies. The results are based on 469~$fb^{-1}$ of data collected at or near the $Υ(4S)$~ resonance with the BaBar detector at SLAC. We present the first measurements of the $e^+ e^-\to K^0_S K^0_Lπ^0$, $K^0_S K^0_Lη$, and $K^0_S K^0_Lπ^0π^0$ cross sections up to a center-of-mass energy of 4~GeV, and study their intermediate resonance structures. We observe $J/ψ$ decays to all of these final states for the first time, present measurements of their $J/ψ$ branching fractions, and search for $ψ(2S)$ decays.
description: 18 pages, 27 postscript figures