cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Delivery 1: Selection of AI software
Creators: name: Wildgaard, Lorna
name: Johnsen, Solveig Sandal
name: Kiersgaard, Julie
Publisher: name: Zenodo
Year: 2020

description: In this first delivery we identify requirements to AI powered software that supports systematic approaches to searching and choose the softwares we will take further in the project. The chosen software will in the next stage of the project be analysed in a system test by information specialists and user tested in a Hackathon by researchers and other experts in the health sciences.
The Blackwell relation defines no lattice
Creators: name: Bertschinger, Nils
name: Rauh, Johannes
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 62B15, 62C05, 94A40

description: Blackwell's theorem shows the equivalence of two preorders on the set of information channels. Here, we restate, and slightly generalize, his result in terms of random variables. Furthermore, we prove that the corresponding partial order is not a lattice; that is, least upper bounds and greatest lower bounds do not exist.
description: 5 pages, 1 figure
CHILDREN'S FAIRY TALES AND THEIR EDUCATIONAL IMPORTANCE
Creators: name: Fayzulloyev, Otabek
Publisher: name: Zenodo
Year: 2024

description: In this article, the educational value of Uzbek and English children's fairy tales is extensively analyzed. The role of fairy tales in conveying moral standards, national values and life knowledge to children is considered. With the help of examples, the role of fairy tales in children's education, their influence on moral and spiritual formation, as well as the importance of fairy tales in preserving and connecting national culture are highlighted.
Skycorr: A general tool for spectroscopic sky subtraction
Creators: name: Noll, S.
name: Kausch, W.
name: Kimeswenger, S.
name: Barden, M.
name: Jones, A. M.
name: Modigliani, A.
name: Szyszka, C.
name: Taylor, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Airglow emission lines, which dominate the optical-to-near-IR sky radiation, show strong, line-dependent variability on various time scales. Therefore, the subtraction of the sky background in the affected wavelength regime becomes a problem if plain sky spectra have to be taken at a different time as the astronomical data. A solution of this issue is the physically motivated scaling of the airglow lines in the plain sky data to fit the sky lines in the object spectrum. We have developed a corresponding instrument-independent approach based on one-dimensional spectra. Our code skycorr separates sky lines and sky/object continuum by an iterative approach involving a line finder and airglow line data. The sky lines are grouped according to their expected variability. The line groups in the sky data are then scaled to fit the sky in the science data. Required pixel-specific weights for overlapping groups are taken from a comprehensive airglow model. Deviations in the wavelength calibration are corrected by fitting Chebyshev polynomials and rebinning via asymmetric damped sinc kernels. The scaled sky lines and the sky continuum are subtracted separately. VLT X-Shooter data covering time intervals from two minutes to about one year were selected to illustrate the performance. Except for short time intervals of a few minutes, the sky line residuals were several times weaker than for sky subtraction without fitting. Further tests show that skycorr performs consistently better than the method of Davies (2007) developed for VLT SINFONI data.
description: 17 pages, 18 figures, accepted for publication in A&A
de Sitter transitivity, conformal transformations and conservation laws
Creators: name: Pereira, J. G.
name: Sampson, A. C.
name: Savi, L. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Minkowski spacetime is transitive under ordinary translations, a transformation that do not have matrix representations. The de Sitter spacetime, on the other hand, is transitive under a combination of translations and proper conformal transformations, which do have a matrix representation. Such matrix, however, is not by itself a de Sitter generator: it gives rise to a conformal re-scaling of the metric, a transformation not belonging to the de Sitter group, and in general not associated with diffeomorphisms in spacetime. When dealing with variational principles and Noether's theorem in de Sitter spacetime, therefore, it turns out necessary to regularise the transformations in order to eliminate the conformal re-scaling of the metric.
description: 10 pages
Kondo holes in topological Kondo insulators: Spectral properties and surface quasiparticle interference
Creators: name: Baruselli, Pier Paolo
name: Vojta, Matthias
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A fascinating type of symmetry-protected topological states of matter are topological Kondo insulators, where insulating behavior arises from Kondo screening of localized moments via conduction electrons, and non-trivial topology emerges from the structure of the hybridization between the local-moment and conduction bands. Here we study the physics of Kondo holes, i.e., missing local moments, in three-dimensional topological Kondo insulators, using a self-consistent real-space mean-field theory. Such Kondo holes quite generically induce in-gap states which, for Kondo holes at or near the surface, hybridize with the topological surface state. In particular, we study the surface-state quasiparticle interference (QPI) induced by a dilute concentration of surface Kondo holes and compare this to QPI from conventional potential scatterers. We treat both strong and weak topological-insulator phases and, for the latter, specifically discuss the contributions to QPI from inter-Dirac-cone scattering.
Improved Design Method for Nearly Linear-Phase IIR Filters Using Constrained Optimization
Creators: name: Nongpiur, R. C.
name: Shpak, D. J.
name: Antoniou, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A new optimization method for the design of nearly linear-phase IIR digital filters that satisfy prescribed specifications is proposed. The group-delay deviation is minimized under the constraint that the passband ripple and stopband attenuation are within the prescribed specifications and either a prescribed or an optimized group delay can be achieved. By representing the filter in terms of a cascade of second-order sections, a non-restrictive stability constraint characterized by a set of linear inequality constraints can be incorporated in the optimization algorithm. An additional feature of the method, which is very useful in certain applications, is that it provides the capability of constraining the maximum gain in transition bands to be below a prescribed level. Experimental results show that filters designed using the proposed method have much lower group-delay deviation for the same passband ripple and stopband attenuation when compared with corresponding filters designed with several state-of-the-art competing methods.
Efficient construction of the lattice of frequent closed patterns and simultaneous extraction of generic bases of rules
Creators: name: Hamrouni, Tarek
name: Yahia, Sadok Ben
name: Nguifo, Engelbert Mephu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: In the last few years, the amount of collected data, in various computer science applications, has grown considerably. These large volumes of data need to be analyzed in order to extract useful hidden knowledge. This work focuses on association rule extraction. This technique is one of the most popular in data mining. Nevertheless, the number of extracted association rules is often very high, and many of them are redundant. In this paper, we propose a new algorithm, called PRINCE. Its main feature is the construction of a partially ordered structure for extracting subsets of association rules, called generic bases. Without loss of information these subsets form representation of the whole association rule set. To reduce the cost of such a construction, the partially ordered structure is built thanks to the minimal generators associated to frequent closed patterns. The closed ones are simultaneously derived with generic bases thanks to a simple bottom-up traversal of the obtained structure. The experimentations we carried out in benchmark and "worst case" contexts showed the efficiency of the proposed algorithm, compared to algorithms like CLOSE, A-CLOSE and TITANIC.
description: 50 pages, in French
The Galactic Magnetic Field and Ultrahigh-Energy Cosmic Ray Deflections
Creators: name: Farrar, Glennys R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Our understanding of the Galactic magnetic field (GMF) has increased considerably in recent years, while at the same time remaining far from adequate. By way of illustration, the Jansson and Farrar (2012) (JF12) GMF model is described, emphasizing how it is constrained and which features are robust or likely to change, as modelling and constraining data improve. The most urgent requirements for the next phase of modelling are a more realistic model for the relativistic electron distribution (in order to reduce the systematic error associated with interpreting synchrotron data) and a better theoretical understanding of the origin of the large-scale coherent field (in order to develop a better phenomenological parameterization of the field). Even in its current stage of development, the JF12 model allows some important conclusions about UHECR deflections in the GMF to be formulated.
description: Invited chapter in a volume devoted to ultrahigh energy cosmic rays, of Comptes Rendus Physique XX (2014), ed. A. Letessier-Selvon.; 11 pages, 10 figures
Adaptive Search Algorithms for Discrete Stochastic Optimization: A Smooth Best-Response Approach
Creators: name: Gharehshiran, Omid Namvar
name: Krishnamurthy, Vikram
name: Yin, George
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper considers simulation-based optimization of the performance of a regime-switching stochastic system over a finite set of feasible configurations. Inspired by the stochastic fictitious play learning rules in game theory, we propose an adaptive simulation-based search algorithm that uses a smooth best-response sampling strategy and tracks the set of global optima, yet distributes the search so that most of the effort is spent on simulating the system performance at the global optima. The algorithm converges weakly to the set of global optima even when the observation data is correlated (as long as a weak law of large numbers holds). Numerical examples show that the proposed scheme yields a faster convergence for finite sample lengths compared with several existing random search and pure exploration methods in the literature.
description: 13 pages, 1 table, 4 figures, submitted to IEEE Transactions on Automatic Control
Hacking cultures, governance and socio-economic models
Creators: name: Blumer, Stéphane
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 440107
subject: Social and cultural anthropology
classificationCode: 350704
subject: Entrepreneurship

description: This paper explores the phenomenon of hacking culture and its relationship to governance and socio-economic models. The paper exposes that hacking is not only a subculture or counterculture, but also a social movement that attracts a growing interest from private and public institutions, as well as researchers in the social sciences. The perspectives on hacking culture is a vast panorama. Some researchers in social sciences view it as a problem of ethics (Coleman, 2009, 2012, 2015, 2017), while others see it as a community of practice and potential labour revolution (Berrebi-Hoffmann, Lallement, Bureau, 2018). The paper emphasises the collaborative nature of hacking, and highlights the importance of observing how cultural worlds intersect through hacking practices. A more nuanced understanding of hacking culture is necessary, and suggests that the movement can sometimes be appropriated by forms of social entrepreneurship. Hacktivists prove not to be responding only to poverty, inequality, and environmental devastation, but create social laboratories with the intent of producing alternative values, discourses, and practices. Noting that hacking culture is visible in collective experiences in Europe that contribute to the field of social innovation, it is suggested that the creative industries, as promoted by the European Commission and other transnational organisations, can be used as a heuristic device for understanding the potential of hacking culture. Through ethnographic examples, it is shown how hacking can produce social change, and highlights the potential for hacking practices to inform and shape new socio-economic models.
Fixing the Energy Scale in Scanning Tunneling Microscopy on Semiconductor Surfaces
Creators: name: Münnich, Gerhard
name: Donarini, Andrea
name: Wenderoth, Martin
name: Repp, Jascha
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In scanning tunneling experiments on semiconductor surfaces, the energy scale within the tunneling junction is usually unknown due to tip-induced band bending. Here, we experimentally recover the zero point of the energy scale by combining scanning tunneling microscopy with Kelvin probe force spectroscopy. With this technique, we revisit shallow acceptors buried in GaAs. Enhanced acceptor-related conductance is observed in negative, zero, and positive band-bending regimes. An Anderson-Hubbard model is used to rationalize our findings, capturing the crossover between the acceptor state being part of an impurity band for zero band bending, and the acceptor state being split off and localized for strong negative or positive band bending, respectively.
description: 32 pages, 13 figures
Over-Bias Light Emission due to Higher Order Quantum Noise of a Tunnel Junction
Creators: name: Xu, F.
name: Holmqvist, C.
name: Belzig, W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Understanding tunneling from an atomically sharp tip to a metallic surface requires to account for interactions on a nanoscopic scale. Inelastic tunneling of electrons generates emission of photons, whose energies intuitively should be limited by the applied bias voltage. However, experiments by Schull et al. [Phys. Rev. Lett. 102, 057401 (2009)] indicate that more complex processes involving the interaction of electrons with plasmon polaritons lead to photon emission characterized by over-bias energies. We propose a model of this observation in analogy to dynamical Coulomb blockade, originally developed for treating the electronic environment in mesoscopic circuits. We explain the experimental finding quantitatively by the correlated tunneling of two electrons interacting with an LRC circuit modeling the local plasmon-polariton mode. To explain the over-bias emission, the non-Gaussian statistics of the tunneling dynamics of the electrons is essential.
description: 5 pages, 4 figures
Reliability and agreement of manual and automated morphological radiographic hip measurements
Creators: name: Boel, F
name: Riedstra, NS
name: Tang, J
name: Hanff, DF
name: Ahedi, H
name: Arbabi, V
name: Arden, NK
name: Bierma-Zeinstra, SMA
name: van Buuren, MMA
name: Cicuttini, FM
name: Cootes, TF
name: Crossley, Kay
name: Eygendaal, D
name: Felson, DT
name: Gielis, WP
name: Heerey, Joshua
name: Jones, G
name: Kluzek, S
name: Lane, NE
name: Lindner, C
name: Lynch, J
name: van Meurs, J
name: Nelson, AE
name: Mosler, Andrea
name: Nevitt, MC
name: Oei, EH
name: Runhaar, J
name: Weinans, H
name: Agricola, R
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 32
subject: Biomedical and clinical sciences
classificationCode: 3202
subject: Clinical sciences
classificationCode: 320216
subject: Orthopaedics

description: Objective: To determine the reliability and agreement of manual and automated morphological measurements, and agreement in morphological diagnoses. Methods: Thirty pelvic radiographs were randomly selected from the World COACH consortium. Manual and automated measurements of acetabular depth-width ratio (ADR), modified acetabular index (mAI), alpha angle (AA), Wiberg center edge angle (WCEA), lateral center edge angle (LCEA), extrusion index (EI), neck-shaft angle (NSA), and triangular index ratio (TIR) were performed. Bland-Altman plots and intraclass correlation coefficients (ICCs) were used to test reliability. Agreement in diagnosing acetabular dysplasia, pincer and cam morphology by manual and automated measurements was assessed using percentage agreement. Visualizations of all measurements were scored by a radiologist. Results: The Bland-Altman plots showed no to small mean differences between automated and manual measurements for all measurements except for ADR. Intraobserver ICCs of manual measurements ranged from 0.26 (95%-CI 0–0.57) for TIR to 0.95 (95%-CI 0.87–0.98) for LCEA. Interobserver ICCs of manual measurements ranged from 0.43 (95%-CI 0.10–0.68) for AA to 0.95 (95%-CI 0.86–0.98) for LCEA. Intermethod ICCs ranged from 0.46 (95%-CI 0.12–0.70) for AA to 0.89 (95%-CI 0.78–0.94) for LCEA. Radiographic diagnostic agreement ranged from 47% to 100% for the manual observers and 63%–96% for the automated method as assessed by the radiologist. Conclusion: The automated algorithm performed equally well compared to manual measurement by trained observers, attesting to its reliability and efficiency in rapidly computing morphological measurements. This validated method can aid clinical practice and accelerate hip osteoarthritis research.
Long term optical variability of bright X-ray point sources in elliptical galaxies
Creators: name: Jithesh, V.
name: Misra, R.
name: Shalima, P.
name: Jeena, K.
name: Ravikumar, C. D.
name: Babu, B. R. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present long term optical variability studies of bright X-ray sources in four nearby elliptical galaxies with {\it Chandra} Advanced CCD Imaging Spectrometer array (ACIS-S) and {\it Hubble Space Telescope (HST)} Advanced Camera for Surveys observations. Out of the 46 bright (X-ray counts $> 60$) sources that are in the common field of view of the {\it Chandra} and {\it HST} observations, 34 of them have potential optical counterparts, while the rest of them are optically dark. After taking into account of systematic errors, estimated using the field optical sources as reference, we find that four of the X-ray sources (three in NGC1399 and one in NGC1427) have variable optical counterparts at a high significance level. The X-ray luminosities of these source are $\sim 10^{38}$ $\rm ergs~s^{-1}$ and are also variable on similar time-scales. The optical variability implies that the optical emission is associated with the X-ray source itself rather than being the integrated light from a host globular cluster. For one source the change in optical magnitude is $> 0.3$, which is one of the highest reported for this class of X-ray sources and this suggests that the optical variability is induced by the X-ray activity. However, the optically variable sources in NGC1399 have been reported to have blue colours ($g - z > 1$). All four sources have been detected in the infra-red (IR) by {\it Spitzer} as point sources, and their ratio of $5.8$ to $3.6 μm$ flux are $> 0.63$ indicating that their IR spectra are like those of Active Galactic Nuclei (AGN). While spectroscopic confirmation is required, it is likely that all four sources are background AGNs. We find none of the X-ray sources having optical/IR colours different from AGNs, to be optically variable.
description: 14 Pages, Accepted for publication in RAA
Far‐Right Digital Activism in Polarized Contexts: A Comparative Analysis of Engagement in Hashtag Wars
Creators: name: Chagas, Viktor
name: Carreiro, Rodrigo
name: Santos, Nina
name: Popolin, Guilherme
Publisher: name: figshare
Year: 2022
Subjects: subject: 200104 Media Studies
subject: FOS: Media and communications

description: Artigo publicado no Media and Communication, 10(4), 2022.
Christopher DIEZ, Ciceros emanzipatorische Leserführung. Studien zum Verhältnis von dialogisch-rhetorischer Inszenierung und skeptischer Philosophie in De natura deorum
Creators: name: Ullrich, Heiko
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2023

description: Rezension zu: Christopher Diez, Ciceros emanzipatorische Leserführung. Studien zum Verhältnis von dialogisch-rhetorischer Inszenierung und skeptischer Philoso­phie in De natura deorum. Stuttgart: Steiner 2021, 406 S., EUR 67,00. ISBN: 978-3-515-13026-4
description: Göttinger Forum für Altertumswissenschaft, Bd. 25 (2022): Göttinger Forum für Altertumswissenschaft
O'ZBEK VA INGLIZ BOLALAR FOLKLORIDA MAVSUMIY QO'SHIQLAR: TABIATGA MUNOSABAT VA UNING TARBIYAVIY AHAMIYATI
Creators: name: Fayzulloyev, Otabek
Publisher: name: Zenodo
Year: 2024

description: The article analyzes the role of seasonal songs in Uzbek and English children's folklore in children's education and their importance in forming an attitude towards nature. In Uzbek and English children's folklore, seasonal songs play an important role in increasing children's respect for the environment and helping their moral development by describing natural phenomena. These songs provide ample opportunities for children to understand nature, inculcate national and religious values, and develop language and speech skills.
Anomalous impact in reaction-diffusion models
Creators: name: Mastromatteo, Iacopo
name: Toth, Bence
name: Bouchaud, Jean-Philippe
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Trading and Market Microstructure (q-fin.TR)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We generalize the reaction-diffusion model A + B -> 0 in order to study the impact of an excess of A (or B) at the reaction front. We provide an exact solution of the model, which shows that linear response breaks down: the average displacement of the reaction front grows as the square-root of the imbalance. We argue that this model provides a highly simplified but generic framework to understand the square-root impact of large orders in financial markets.
description: 5 pages, 2 figures
On dynamo action in the giant star Pollux : first results
Creators: name: Palacios, A.
name: Brun, A. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present preliminary results of a 3D MHD simulation of the convective envelope of the giant star Pollux for which the rotation period and the magnetic field intensity have been measured from spectroscopic and spectropolarimetric observations. This giant is one of the first single giants with a detected magnetic field, and the one with the weakest field so far. Our aim is to understand the development and the action of the dynamo in its extended convective envelope.
description: 2 pages - 1 figure . To appear in the proceedings of the IAU Symposium 302 on "Magnetic Fields Throughout Stellar Evolution", held in Biarritz (France) in August 2013
The Turkish Version of IFMSA Social Accountability Assessment Tool: IFMSA Sosyal Hesap Verilebilirlik Değerlendirme Formu
Creators: name: Coşkun, Özlem
name: Timurçin, Utku
name: Kıyak, Yavuz Selim
name: Budakoğlu, Işıl İrem
Publisher: name: Zenodo
Year: 2023
Subjects: sosyal hesap verilebilirlik

description: The file includes the Turkish Version of IFMSA Social Accountability Assessment Tool. Validity evidence of the tool has been presented in this publication: Coşkun, Ö., Timurçin, U., Kıyak, Y.S. et al. Validation of IFMSA social accountability assessment tool: exploratory and confirmatory factor analysis. BMC Med Educ 23, 138 (2023). https://doi.org/10.1186/s12909-023-04121-7 https://bmcmededuc.biomedcentral.com/articles/10.1186/s12909-023-04121-7 The English, French, Spanish, and Arabic versions of the Students’ Toolkit on Social Accountability in Medical Schools are accessible from here: https://ifmsa.org/social-accountability/ Dosya, IFMSA Sosyal Hesap Verilebilirlik Değerlendirme Formu'nun Türkçe versiyonunu içermektedir.
The environmental dependence of neutral hydrogen in the GIMIC simulations
Creators: name: Cunnama, D.
name: Andrianomena, S.
name: Cress, C. M.
name: Faltenbacher, A.
name: Gibson, B. K.
name: Theuns, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use the Galaxies-Intergalactic Medium Interaction Calculation (GIMIC) cosmological hydrodynamic simulation at z=0 to study the distribution and environmental dependence of neutral hydrogen (HI) gas in the outskirts of simulated galaxies. This gas can currently be probed directly in, for example, Ly$α$ absorption via the observation of background quasars. Radio facilities, such as the Square Kilometre Array, will provide a complementary probe of the diffuse HI in emission and will constrain the physics underpinning the complex interplay between accretion and feedback mechanisms which affect the intergalactic medium. We extract a sample of 488 galaxies from a re-simulation of the average cosmic density GIMIC region. We estimate the neutral hydrogen content of these galaxies and the surrounding intergalactic medium within which they reside. We investigate the average HI radial profiles by stacking the individual profiles according to both mass and environment. We find high HI column densities at large impact parameters in group environments and markedly lower HI densities for non-group galaxies. We suggest that these results likely arise from the combined effects of ram pressure stripping and tidal interactions present in group environments.
description: 9 pages, 3 figures, MNRAS accepted
Future Directions in the Microwave Cavity Search for Dark Matter Axions
Creators: name: Shokair, T. M.
name: Root, J.
name: Van Bibber, K. A.
name: Brubaker, B.
name: Gurevich, Y. V.
name: Cahn, S. B.
name: Lamoreaux, S. K.
name: Anil, M. A.
name: Lehnert, K. W.
name: Mitchell, B. K.
name: Reed, A.
name: Carosi, G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The axion is a light pseudoscalar particle which suppresses CP-violating effects in strong interactions and also happens to be an excellent dark matter candidate. Axions constituting the dark matter halo of our galaxy may be detected by their resonant conversion to photons in a microwave cavity permeated by a magnetic field. The current generation of the microwave cavity experiment has demonstrated sensitivity to plausible axion models, and upgrades in progress should achieve the sensitivity required for a definitive search, at least for low mass axions. However, a comprehensive strategy for scanning the entire mass range, from 1-1000 $μ$eV, will require significant technological advances to maintain the needed sensitivity at higher frequencies. Such advances could include sub-quantum-limited amplifiers based on squeezed vacuum states, bolometers, and/or superconducting microwave cavities. The Axion Dark Matter eXperiment at High Frequencies (ADMX-HF) represents both a pathfinder for first data in the 20-100 $μ$eV range ($\sim$5-25 GHz), and an innovation test-bed for these concepts.
On realizations of polynomial algebras with three generators via deformed oscillator algebras
Creators: name: Isaac, Phillip S.
name: Marquette, Ian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present the most general polynomial Lie algebra generated by a second order integral of motion and one of order M, construct the Casimir operator, and show how the Jacobi identity provides the existence of a realization in terms of deformed oscillator algebra. We also present the classical analog of this construction for the most general Polynomial Poisson algebra. Two specific classes of such polynomial algebras are discussed that include the symmetry algebras observed for various 2D superintegrable systems.
description: 28 pages
Approximate Least Squares
Creators: name: Lunglmayr, Michael
name: Unterrieder, Christoph
name: Huemer, Mario
Publisher: name: arXiv
Year: 2013
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: We present a novel iterative algorithm for approximating the linear least squares solution with low complexity. After a motivation of the algorithm we discuss the algorithm's properties including its complexity, and we present theoretical results as well as simulation based performance results. We describe the analysis of its convergence behavior and show that in the noise free case the algorithm converges to the least squares solution.
description: Preprint of the paper submitted to IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) 2014
Fidelity susceptibility and quantum Fisher information for density operators with arbitrary ranks
Creators: name: Liu, Jing
name: Xiong, Heng-Na
name: Song, Fei
name: Wang, Xiaoguang
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Taking into account the density matrices with non-full ranks, we show that the fidelity susceptibility is determined by the support of the density matrix. Combining with the corresponding expression of the quantum Fisher information, we rigorously prove that the fidelity susceptibility is proportional to the quantum Fisher information. As this proof can be naturally extended to the full rank case, this proportional relation is generally established for density matrices with arbitrary ranks. Furthermore, we give an analytical expression of the quantum Fisher information matrix, and show that the quantum Fisher information matrix can also be represented in the density matrix's support.
description: 10 pages, no figure
Renormalization group approach to a $p$-wave superconducting model
Creators: name: Continentino, Mucio A.
name: Deus, Fernanda
name: Caldas, Heron
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present in this work an exact renormalization group (RG) treatment of a one-dimensional $p$-wave superconductor. The model proposed by Kitaev consists of a chain of spinless fermions with a $p$-wave gap. It is a paradigmatic model of great actual interest since it presents a weak pairing superconducting phase that has Majorana fermions at the ends of the chain. Those are predicted to be useful for quantum computation. The RG allows to obtain the phase diagram of the model and to study the quantum phase transition from the weak to the strong pairing phase. It yields the attractors of these phases and the critical exponents of the weak to strong pairing transition. We show that the weak pairing phase of the model is governed by a chaotic attractor being non-trivial from both its topological and RG properties. In the strong pairing phase the RG flow is towards a conventional strong coupling fixed point. Finally, we propose an alternative way for obtaining $p$-wave superconductivity in a one-dimensional system without spin-orbit interaction.
description: 14 pages and 4 figures, to appear in Physics Letters A
Orientational Ordering of Passivating Ligands on CdS Nanorods in Solution Generates Strong Rod-Rod Interactions
Creators: name: Widmer-Cooper, Asaph
name: Geissler, Phillip
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present the first nearly atomistic molecular dynamics study of nanorod-nanorod association in explicit solvent, showing that inter-rod forces can be dominated by microscopic factors absent in common continuum descriptions. Specifically, we find that alkane ligands on faceted CdS nanorods in n-hexane undergo a temperature-dependent order-disorder transition akin to that of self-assembled monolayers on macroscopic substrates. This collective ligand alignment organizes nearby solvent molecules, strongly influencing the statistics of rod-rod separation. The strong temperature-dependence of this mechanism could be exploited in the laboratory to manipulate and optimize the assembly of ordered structures.
description: 25 pages, 6 figures
Teleparallel Poincaré Cosmology and $Λ$CDM Model
Creators: name: Lu, Wenjie
name: Lee, Wolung
name: Ng, Kin-Wang
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We apply the teleparallelism condition to the Poincaré gauge theory of gravity. The resultant teleparallelized cosmology is completely equivalent to the Friedmann cosmology derived from Einstein's general theory of relativity. The torsion is shown to play the role of the cosmological constant driving the cosmic acceleration. We then extend such theory to include the effect of spin and explore the possibility of accounting for the current accelerating universe by a spinning dark energy.
description: 7 pages by revtex4.1, no figure
The maps of matrices and portrait maps of density operators of composite and noncomposite systems
Creators: name: Man'ko, Margarita A.
name: Man'ko, Vladimir I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We obtain a new inequality for arbitrary Hermitian matrices. We describe particular linear maps called the matrix portrait of arbitrary NxN matrices. The maps are obtained as analogs of partial tracing of density matrices of multipartite qudit systems. The structure of the maps is inspired by "portrait" map of the probability vectors corresponding to the action on the vectors by stochastic matrices containing either unity or zero matrix elements. We obtain new entropic inequalities for arbitrary qudit states including a single qudit and an discuss entangled single qudit state. We consider in detail the examples of N=3 and 4. Also we point out a possible use of entangled states of systems without subsystems (e.g., a single qudit) as a resource for quantum computations.
description: 10 pages
Disk evolution in the solar neighborhood. I Disk frequencies from 1 to 100 Myr
Creators: name: Ribas, Álvaro
name: Merín, Bruno
name: Bouy, Hervé
name: Maud, Luke T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the evolution of circumstellar disks in 22 young (1 to 100 Myr) nearby (within 500 pc) associations over the entire mass spectrum using photometry covering from the optical to the mid-infrared. We compiled a catalog of 2340 spectroscopically-confirmed members of these nearby associations. We analyzed their spectral energy distributions and searched for excess related to the presence of protoplanetary disks in a homogeneous way. Sensitivity limits and spatial completeness were also considered. We derive disk fractions as probed by mid-infrared excess in these regions. The unprecedented size of our sample allows us to confirm the timescale of disk decay reported in the literature and to find new trends. The fraction of excess sources increases systematically if measured at longer wavelengths. Disk percentages derived using different wavelength ranges should therefore be compared with caution. The dust probed at 22-24 um evolves slower than that probed at shorter wavelengths (3.4-12 um). Assuming an exponential decay, we derive a timescale tau=4.2-5.8 Myr at 22-24 um for primordial disks, compared to 2-3 Myr at shorter wavelength (3.4-12 um). Primordial disks disappear around 10 Myr, matching in time a brief increase of the number of 'evolved' disks. The increase in timescale of excess decay at longer wavelength is compatible with inside-out disk clearing scenarios. The increased timescale of decay and larger dispersion in the distribution of disk fractions at 22-24 um suggest that the inner and outer zones evolve differently, the latter potentially following a variety of evolutionary paths. The drop of primordial disks and the coincident rise of evolved disks at 10 Myr are compatible with planet formation theories suggesting that the disappearance of the gas is immediately followed by the dynamical stirring of the disk.
description: Accepted for publication in A&A: 13 November 2013. 12 pages, 7 figures
XXIII Международная научно-практическая конференция «Актуальные проблемы общества, экономики и права в контексте глобальных вызовов»
Creators: name: ООО "Институт развития образования и консалтинга"
Publisher: name: ООО "Институт развития образования и консалтинга"
Year: 2023

description: XXIII Международная научно-практическая конференция «Актуальные проблемы общества, экономики и права в контексте глобальных вызовов»
Quantum Phases and Collective Excitations in Bose-Hubbard Models with Staggered Magnetic Flux
Creators: name: Yao, Juan
name: Zhang, Shizhong
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the quantum phases of a Bose-Hubbard model with staggered magnetic flux in two dimensions, as has been realized recently [Aidelsburger {\it et al.}, PRL, {\bf 107}, 255301 (2011)]. Within mean field theory, we show how the structure of the condensates evolves from weak to strong coupling limit, exhibiting a tricritical point at the Mott-superfluid transition. Non-trivial topological structures (Dirac points) in the quasi-particle (hole) excitations in the Mott state are found within random phase approximation and we discuss how interaction modifies their structures. Excitation gap in the Mott state closes at different ${\bf k}$ points when approaching the superfluid states, which is consistent with the findings of mean field theory.
description: 5 pages, 3 figures
Two-parametric fractional statistics models for anyons
Creators: name: Rovenchak, Andrij
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In the paper, two-parametric models of fractional statistics are proposed in order to determine the functional form of the distribution function of free anyons. From the expressions of the second and third virial coefficients, an approximate correspondence is shown to hold for three models, namely, the nonextensive Polychronakos statistics and both the incomplete and the nonextensive modifications of the Haldane--Wu statistics. The difference occurs only in the fourth virial coefficient leading to a small correction in the equation of state. For the two generalizations of the Haldane--Wu statistics, the solutions for the statistics parameters $g,q$ exist in the whole domain of the anyonic parameter $α\in[0;1]$, unlike the nonextensive Polychronakos statistics. It is suggested that the search for the expression of the anyonic distribution function should be made within some modifications of the Haldane--Wu statistics.
description: 14 pages, 3 figures
D5.1_Dissemination, Communication and Exploitation (DCE) Strategy
Creators: name: Djordjevic, Aleksandar
Publisher: name: Zenodo
Year: 2022

description: Deliverable D5.1 – Dissemination, Communication and Exploitation (DCE) Strategy establishes the basis for the development of a common dissemination, communication & exploitation plan in the project. This is a document for the use of all the partners involved in GreenFORCE project, designated as “public” regarding the dissemination level. The deliverable will keep updated the Dissemination, Communication and Exploitation strategies of the project as well as identifies in detail stakeholders, actions, tools, materials, Key Performance Indicators (KPI) and procedures agreed. This deliverable is alive and will be modified according to the project's needs. The results of the strategies implemented will be revised in M18.
description: Dissemination, Communication, Strategy, GreenFORCE, Western Balkan
Resolution of Discrete Excited States in InGaN Multiple Quantum Wells using Degenerate Four Wave Mixing
Creators: name: Kundys, D. O.
name: Wells, J. -P. R.
name: Andreev, A. D.
name: Hashemizadeh, S. A.
name: Wang, T.
name: Parbrook, P. J.
name: Fox, A. M.
name: Mowbray, D. J.
name: Skolnick, M. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on two pulse, degenerate four wave mixing (DFWM) measurements on shallow InGaN/GaN multi-quantum wells (MQWs) grown on sapphire substrates. These reveal pulse length limited signal decays. We have found a 10:1 resonant enhancement of the DFWM signal at the excitonic transition frequencies which thereby give a sharp discrimination of the discrete excitonic contributions within the featureless distribution seen in absorption spectra. The exciton resonances have peak positions, which yield good overall agreement with a full k.P model calculation for the quantum well energy levels and optical transition matrix elements. InGaN/GaN MQWs generally exhibit strongly inhomogeneously broadened excitation spectra due to indium fluctuation effects; this approach therefore affords a practical method to extract information on the excited excitonic states not available previously
Clinical application of usage-based phonology: Treatment of cleft palate speech using usage-based electropalatography
Creators: name: Patrick, Kathryn
name: Fricke, Silke
name: Rutter, Ben
name: Cleland, Joanne
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: To investigate whether a novel electropalatography (EPG) therapy, underpinned by usage-based phonology theory, can improve the accuracy of target speech sounds for school-aged children and adults with persistent speech sound disorder (SSD) secondary to cleft palate +/− lip. Six consecutively treated participants (7–27 years) with long-standing speech disorders associated with cleft palate enrolled in a multiple baseline (ABA) within-participant case series. The usage-based EPG therapy technique involved high-volume production of words. Speech was assessed on three baselines prior to therapy, during weekly therapy, at completion of therapy, and 3 months post-therapy. Percent correct of target phonemes in untreated words and continuously connected speech were assessed through acoustic phonetic transcription. Intra- and inter-transcriber agreement was determined. Large to medium treatment effect sizes were shown for all participants following therapy (15–33 sessions). Percentage of targets correct for untreated words improved from near 0% pre-therapy, to near 100% for most target sounds post-therapy. Generalisation of target sounds to spontaneous connected speech occurred for all participants and ranged from 78.95−100% (M = 90.66; SD = 10.14) 3 months post-therapy. Clinically significant speech change occurred for all participants following therapy. Response to the novel therapeutic technique is encouraging and further research is indicated.
Effect of Interfacial Structural Phase Transitions on the Coupled Motion of Grain Boundaries: A Molecular Dynamics Study
Creators: name: Frolov, Timofey
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work the coupled motion of two different phases of Σ5(210)[001] grain boundaries were investigated by molecular dynamics simulations of fcc Cu. The effect of interfacial structural phase transitions is shown to have a profound effect on both the shear strength and the nature of the coupled motion. Specifically, the motion of the two different phases is described by ideal coupling factors β<100> and β<110> that have different magnitudes and even signs. Additionally, the shear strength for the two inter- facial phases is observed to differ by up to 40 % at the lowest temperatures simulated. The study demonstrates that grain boundary phases transitions may have strong effects on the kinetics of microstructural evolution.
description: 8 pages, 4 figures
A new integrable discrete generalized nonlinear Schrodinger equation and its reductions
Creators: name: Li, Hongmin
name: Li, Yuqi
name: Chen, Yong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: A new integrable discrete system is constructed and studied, based on the algebraization of the difference operator. The model is named the discrete generalized nonlinear Schrodinger (GNLS) equation for which can be reduced to classical discrete nonlinear Schrodinger (NLS) equation. To show the complete integrability of the discrete GNLS equation, the recursion operator, symmetries and conservation quantities are obtained. Furthermore, all of reductions for the discrete GNLS equation are given and the discrete NLS equation is obtained by one of the reductions. At the same time, the recursion operator and symmetries of continuous GNLS equation are successfully recovered by its corresponding discrete ones.