cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
From Information Geometry to Quantum Theory
Creators: name: Goyal, Philip
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we show how information geometry, the natural geometry of discrete probability distributions, can be used to derive the quantum formalism. The derivation rests upon three elementary features of quantum phenomena, namely complementarity, measurement simulability, and global gauge invariance. When these features are appropriately formalized within an information geometric framework, and combined with a novel information-theoretic principle, the central features of the finite-dimensional quantum formalism can be reconstructed.
description: v3: 5 pages. Minor clarifications throughout. v2: 5 pages; abstract shortened, introduction significantly improved, citations added
Mitigating baryonic effects with a theoretical error covariance
Creators: name: Moreira, Maria G.
name: Andrade-Oliveira, Felipe
name: Fang, Xiao
name: Huang, Hung-Jin
name: Krause, Elisabeth
name: Miranda, Vivian
name: Rosenfeld, Rogerio
name: Simonović, Marko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: One of the primary sources of uncertainties in modeling the cosmic-shear power spectrum on small scales is the effect of baryonic physics. Accurate cosmology for Stage-IV surveys requires knowledge of the matter power spectrum deep in the nonlinear regime at the percent level. Therefore, it is important to develop reliable mitigation techniques to take into account baryonic uncertainties if information from small scales is to be considered in the cosmological analysis. In this work, we develop a new mitigation method for dealing with baryonic physics for the case of the shear angular power spectrum. The method is based on an extended covariance matrix that incorporates baryonic uncertainties informed by hydrodynamical simulations. We use the results from 13 hydrodynamical simulations and the residual errors arising from a fit to a $Λ$CDM model using the extended halo model code {\tt HMCode} to account for baryonic physics. These residual errors are used to model a so-called theoretical error covariance matrix that is added to the original covariance matrix. In order to assess the performance of the method, we use the 2D tomographic shear from four hydrodynamical simulations that have different extremes of baryonic parameters as mock data and run a likelihood analysis comparing the residual bias on $Ω_m$ and $σ_8$ of our method and the HMCode for an LSST-like survey. We use different modelling of the theoretical error covariance matrix to test the robustness of the method. We show that it is possible to reduce the bias in the determination of the tested cosmological parameters at the price of a modest decrease in the precision.
description: 10 pages, 5 figures
title: ‘Doing Nation’ in a Digital Age: Banal Expressions of Nationalism and Cosmopolitanism in Polymedia Environments among Serbian Londoners
Creators: name: Vico, Sanja
Publisher: name: Goldsmiths, University of London
Year: 2019

description: This thesis looks at how Serbian Londoners negotiate their identities on different digital media platforms, with a particular focus on their ordinary expressions of nationalism and cosmopolitanism. By doing so, it examines whether different platforms invite different identities and whether there is anything culturally specific in the ways my participants engage with digital media. I draw on Madianou and Miller’s (2012) concept of polymedia to refer to new media as an integrated environment of communicative opportunities. Following Deutsch (1953), I posit that national identities come into being through everyday communication practices and exist only as long as they are performed. Drawing on work in philosophy and sociology about doing things discursively, I propose to look at practices that ‘do nation’, and argue that we should think of national identities as a verb: ‘doing nation’. To this end, ethnography, including participant-observation, online ethnography and autoethnography, and in-depth interviews were conducted between July 2015 and November 2018 with 40 participants. The results of this study show there is no single Serbian diaspora in London. Three waves of migrants have been identified: 1945-1990, 1990-2003, and 2003-2013. Each wave is diverse in terms of the class, age, gender and experiences of these participants. The findings show that most participants perceive Serbian national identity as stigmatised due to the legacy of the civil war in the 1990s. Most participants hence employ different strategies in polymedia environments in coping with the perceived stigma and redefining what it means to be Serbian. These strategies depend on the period of migration and choice of platform. The analysis further reveals that Facebook and Viber play a prominent role in supporting the diasporic imaginary among my participants. The thesis finally shows how identities are shaped, maintained and transformed through mediated interpersonal communication and different types of mediated co-presence.
Separating populations with wide data: A spectral analysis
Creators: name: Blum, Avrim
name: Coja-Oghlan, Amin
name: Frieze, Alan
name: Zhou, Shuheng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Machine Learning (stat.ML)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: 60K35, 60K35 (Primary), 60K35 (Secondary)

description: In this paper, we consider the problem of partitioning a small data sample drawn from a mixture of $k$ product distributions. We are interested in the case that individual features are of low average quality $γ$, and we want to use as few of them as possible to correctly partition the sample. We analyze a spectral technique that is able to approximately optimize the total data size--the product of number of data points $n$ and the number of features $K$--needed to correctly perform this partitioning as a function of $1/γ$ for $K>n$. Our goal is motivated by an application in clustering individuals according to their population of origin using markers, when the divergence between any two of the populations is small.
description: Published in at http://dx.doi.org/10.1214/08-EJS289 the Electronic Journal of Statistics (http://www.i-journals.org/ejs/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Evaluating librarian continuing professional development: Merging Guskey's framework and Vygotsky Space to explore transfer of learning
Creators: name: Campbell-Meier, Jennifer
name: Goulding, Anne
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: Library and Information Studies
subject: FOS: Media and communications

description: The aims and motivation for training and continuing professional development (CPD) for librarians are many and varied, depending on the organizational context and the needs of participants. How to evidence the transfer of learning from CPD activities to the workplace has long troubled academics in the management field but has not been a topic of focus in the librarianship discipline. The results of a study testing a new approach to the assessment of CPD outcomes for individual librarians, their workplaces, and their patrons are presented. Adapting Guskey's (2000) framework for assessing teacher CPD, two questionnaires were designed to assess the short-term and long-term outcomes of CPD. The analysis indicates that the approach was effective in identifying how participation in CPD inspires change first in individual professional practice and then organizational learning, resulting in service innovations for the benefit of the whole community. The process is conceptualized through Vygotsky Space.
Ejecta distribution and momentum transfer from oblique impacts on asteroid surfaces
Creators: name: Raducan, S. D.
name: Davison, T. M.
name: Collins, G. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: NASA's Double Asteroid Redirection Test (DART) mission will impact its target asteroid, Dimorphos, at an oblique angle that will not be known prior to the impact. We computed iSALE-3D simulations of DART-like impacts on asteroid surfaces at different impact angles and found that the the vertical momentum transfer efficiency, $β$, is similar for different impact angles, however, the imparted momentum is reduced as the impact angle decreases. It is expected that the momentum imparted from a 45$^\circ$ impact is reduced by up to 50\% compared to a vertical impact. The direction of the ejected momentum is not normal to the surface, however it is observed to `straighten up' with crater growth. iSALE-2D simulations of vertical impacts provide context for the iSALE-3D simulation results and show that the ejection angle varies with both target properties and with crater growth. While the ejection angle is relatively insensitive to the target porosity, it varies by up to 30$^\circ$ with target coefficient of internal friction. The simulation results presented in this paper can help constrain target properties from the DART crater ejecta cone, which will be imaged by the LICIACube. The results presented here represent the basis for an empirical scaling relationship for oblique impacts and can be used as a framework to determine an analytical approximation of the vertical component of the ejecta momentum, $β-1$, given known target properties.
Base de datos de arituculos sobre Machine learning en la predicción del rendimiento académico: Una revisión sistemática de la literatura.
Creators: name: Aguilar, Manuel
name: Campos Bueno, Diego Aldahir
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 461199
subject: Machine learning not elsewhere classified

description: Base de datos de Zotero con la información sobre Machine learning en la predicción del rendimiento académico: Una revisión sistemática de la literatura.
Turbulent energy cascade through equivalence of Euler and Lagrange motion descriptions and bifurcation rates
Creators: name: de Divitiis, Nicola
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: This work analyses the homogeneous isotropic turbulence by means of the equivalence between Euler and Lagrange representations of motion, adopting the bifurcation rates associated with Navier--Stokes and kinematic equations, and an appropriate hypothesis of fully developed chaos. The equivalence of these motion descriptions allows to show that kinetic and thermal energy cascade arise both from the convective term of Liouville equation. Accordingly, these phenomena, of nondiffusive nature, correspond to a transport in physical space linked to the trajectories divergence. Both the bifurcation rates are properly defined, where the kinematic bifurcation rate is shown to be much greater than Navier--Stokes bifurcation rate. This justifies the proposed hypothesis of fully developed chaos where velocity field and particles trajectories fluctuations are statistically uncorrelated. Thereafter, a specific ergodic property is presented, which relates the statistics of fluid displacement to that of velocity and temperature fields. A detailed analysis of separation rate is proposed which studies the statistics of radial velocity component along the material separation vector. Based on previous elements, the closure formulas of von Kármán--Howarth and Corrsin equations are finally achieved. These closures, of nondiffusive kind, represent a propagation phenomenon, and coincide with those just presented by the author in previous works, corroborating the results of these latter.
description: 50 pages, 6 figures
Base de datos de arituculos sobre Machine learning en la predicción del rendimiento académico: Una revisión sistemática de la literatura.
Creators: name: Aguilar, Manuel
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 461199
subject: Machine learning not elsewhere classified

description: Base de datos de Zotero con la información sobre Machine learning en la predicción del rendimiento académico: Una revisión sistemática de la literatura.
Factors affecting reproduction in great blue herons (Ardea herodias)
Creators: name: Simpson, Keith
Publisher: name: University of British Columbia
Year: 2010

description: Reproductive success and size of 15 heronries were monitored from 1977 to 1980 in south coastal British Columbia. My main objectives were to inventory existing colonies, assess changes in colony status from historical information, and document factors important to reproduction. I collected data on banded herons at one colony to describe the movement of herons between and within heronries, and to identify the characteristics of individuals that related to reproductive success. Many heronries formerly identified were no longer present while others were at new locations or much larger in size. Heronry movements followed destruction of the nest trees or reproductive losses in several cases. Relocation normally occurred in the first or second year following heavy losses of young or adults. Disturbances by people sometimes forced herons to leave their nests and increased losses of eggs and young to predators. Severe predation continued after human disturbance had stopped. The number of young raised per successful nest was not a useful measure of reproductive success, since it varied little among colonies. The percentage of nests that succeeded, or numbers of young raised per breeding pair, provided better measures of reproductive success. Marked herons at one colony were not attached to specific nests or mates, and many adults probably switched colonies each year. Unsuccessful pairs did not renest in the same colony during the same breeding season. Although herons in central nests were more successful than those near the edge of the colony, central nests were not occupied by birds which were dominant on feeding areas. Herons are probably attracted to colonies to find new mates each year, and to reduce the vulnerability of their young to predators. Although 78 percent of the herons in one colony fed in the nearest feeding areas, many chose to travel further to feed. These distant feeders suffered higher nest losses to predators, probably because they left their nests unattended more often than other locally feeding birds. Some evidence suggested that males travelled further than females, and were less attentive at the nest. Males may play a dominant role in initiating colony relocations. The lack of attachment of herons to nest sites or mates helps to explain the changes in size and frequent movements of heronries in coastal B.C.
High-order geometric integrators for representation-free Ehrenfest dynamics
Creators: name: Choi, Seonghoon
name: Vaníček, Jiří
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Ehrenfest dynamics is a useful approximation for ab initio mixed quantum-classical molecular dynamics that can treat electronically nonadiabatic effects. Although a severe approximation to the exact solution of the molecular time-dependent Schrödinger equation, Ehrenfest dynamics is symplectic, time-reversible, and conserves exactly the total molecular energy as well as the norm of the electronic wavefunction. Here, we surpass apparent complications due to the coupling of classical nuclear and quantum electronic motions and present efficient geometric integrators for "representation-free" Ehrenfest dynamics, which do not rely on a diabatic or adiabatic representation of electronic states and are of arbitrary even orders of accuracy in the time step. These numerical integrators, obtained by symmetrically composing the second-order splitting method and exactly solving the kinetic and potential propagation steps, are norm-conserving, symplectic, and time-reversible regardless of the time step used. Using a nonadiabatic simulation in the region of a conical intersection as an example, we demonstrate that these integrators preserve the geometric properties exactly and, if highly accurate solutions are desired, can be even more efficient than the most popular non-geometric integrators.
description: Replaced "Ehrenfest dynamics" with "representation-free Ehrenfest dynamics" in the title. Moved most of the supplementary material to the appendix of the main text. Added new references and a new Eq. (54)
Large-angle production of charged pions by 3 GeV/c - 12 GeV/c protons on carbon, copper and tin targets
Creators: name: HARP Collaboration
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A measurement of the double-differential $π^{\pm}$ production cross-section in proton--carbon, proton--copper and proton--tin collisions in the range of pion momentum $100 \MeVc \leq p < 800 \MeVc$ and angle $0.35 \rad \le θ<2.15 \rad$ is presented. The data were taken with the HARP detector in the T9 beam line of the CERN PS. The pions were produced by proton beams in a momentum range from 3 \GeVc to 12 \GeVc hitting a target with a thickness of 5% of a nuclear interaction length. The tracking and identification of the produced particles was done using a small-radius cylindrical time projection chamber (TPC) placed in a solenoidal magnet. An elaborate system of detectors in the beam line ensured the identification of the incident particles. Results are shown for the double-differential cross-sections at four incident proton beam momenta (3 \GeVc, 5 \GeVc, 8 \GeVc and 12 \GeVc).
Simulating the negative jet feedback mechanism in common envelope jets supernovae
Creators: name: Grichener, Aldana
name: Cohen, Coral
name: Soker, Noam
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use the stellar evolution code MESA to study the negative jet feedback mechanism in common envelope jets supernovae (CEJSNe) where a neutron star (NS) launches jets in the envelope of a red supergiant (RSG), and find that the feedback reduces the mass accretion rate to be $χ_{\rm j} \simeq 0.04-0.3$ times the mass accretion rate without the operation of jets. We mimic the effect of the jets on the RSG envelope by depositing the energy that the jets carry into the envelope zones outside the NS orbit. The energy deposition inflates the envelope, therefore reducing the density in the NS vicinity, which in turn reduces the mass accretion rate in a negative feedback cycle. In calculating the above values for the negative jet feedback coefficient (the further reduction in the accretion rate) $χ_{\rm j}$, we adopt the canonical ratio of jets power to actual accretion power of $0.1$, and the results of numerical simulations that show the actual mass accretion rate to be a fraction of $0.1-0.5$ of the Bondi-Hoyle-Lyttleton mass accretion rate.
description: Accepted to ApJ
Maciej Eder, Roman Mazurkiewicz (Hrsg.), De libertate politica sive civili / O wolności rzeczypospolitej albo ślacheckiej
Creators: name: Daugirdas, Kęstutis
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 4 (2013)
Experimental and quantum-chemical characterization of heavy carbon subchalcogenides: Infrared detection of SeC$_3$Se
Creators: name: Salomon, T.
name: Dudek, J. B.
name: Chernyak, Y.
name: Gauss, J.
name: Thorwirth, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: High-resolution infrared studies of laser ablation products from carbon-selenium targets have revealed a new vibrational band at 2057 cm$^{-1}$ that is identified as the vibrational fundamental of the SeC$_3$Se cluster. Because of the rich isotopic composition of selenium and the heavy nuclear masses involved, the vibrational band shows a relatively compact and complex structure despite the simple linear geometric arrangement. Overall, rotational-vibrational lines of six isotopologues could be assigned and fitted permitting the derivation of an accurate selenium-carbon bond length. Spectroscopic analysis has been greatly supported by high-level quantum-chemical calculations of the molecular structure and the harmonic and anharmonic force fields performed at the CCSD(T) level of theory. Scalar-relativistic effects on the molecular structure were also considered but found of little importance.
Self-calibration technique for characterization of integrated THz waveguides
Creators: name: Kellermeier, Max
name: Lemery, Francois
name: Floettmann, Klaus
name: Hillert, Wolfgang
name: Assmann, Ralph
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Emerging high-frequency accelerator technology in the terahertz regime is promising for the development of compact high-brightness accelerators and high resolution-power beam diagnostics. One resounding challenge when scaling to higher frequencies and to smaller structures is the proportional scaling of tolerances which can hinder the overall performance of the structure. Consequently, characterizing these structures is essential for nominal operation. Here, we present a novel and simple self-calibration technique to characterize the dispersion relation of integrated hollow THz-waveguides. The developed model is verified in simulation by extracting dispersion characteristics of a standard waveguide a priori known by theory. The extracted phase velocity does not deviate from the true value by more than $ 9 \times 10^{-5} ~\%$. In experiments the method demonstrates its ability to measure dispersion characteristics of non-standard waveguides embedded with their couplers with an accuracy below $ \approx 0.5~\% $ and precision of $ \approx 0.05~\% $. Equipped with dielectric lining the metallic waveguides act as slow wave structures, and the dispersion curves are compared without and with dielectric. A phase synchronous mode, suitable for transverse deflection, is found at $ 275~\text{GHz} $.
description: to be submitted to $\textit{Physical Review Accelerators and Beams}$
Pseudospin entanglement and Bell test in graphene
Creators: name: Kindermann, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a way of producing and detecting pseudospin entanglement between electrons and holes in graphene. Electron-hole pairs are produced by a fluctuating potential and their entanglement is demonstrated by a current correlation measurement. The chirality of electrons in graphene facilitates a well-controlled Bell test with (pseudo-)spin projection angles defined in real space.
description: 9 pages, 2 figures; v2 with slightly modified abstract and introduction
Exploring the string shoving model in PYTHIA8 for collective behaviors in $pp$ collisions
Creators: name: Kim, Junlee
name: Kim, Eun-Joo
name: Ji, SuJeong
name: Lim, SangHoon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Two-particle correlations have been used to study property of a produced medium called Quark-Gluon Plasma (QGP) in relativistic heavy-ion collisions, and a long-range correlation among produced particles has been considered as a strong evidence of strongly interacting QGP. Strikingly, clear long-range correlations have been also observed in small collision systems like $pp$ and $p$+$A$ at a wide range of collision energies. A model introducing a repulsive force between flux tubes called string shoving can qualitatively describe the long-range near-side correlations in high multiplicity $pp$ collisions. This model implemented in the PYTHIA Monte Carlo event generator allows us to perform detailed study. In this work, a full data analysis to calculate associated yields and flow coefficients is performed with PYTHIA events, and the results are compared with experimental results. We find that the string shoving model overestimates long-range near-side correlations particularly in low multiplicity events. We also introduce a method to subtract such overestimated correlations in low multiplicity to have a more relevant comparison with the data.
description: 12 pages, 10 figures
Malgasyaptera Heiss 1998
Creators: name: Heiss, Ernst
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae
Malgasyaptera

description: Genus Malgasyaptera Heiss, 1998
Malgasyaptera Heiss, 1998b: 578. Type species by monotypy: Malgasyaptera reichli Heiss, 1998. Ref.: Heiss, 1998b (key)
description: Published as part of Heiss, Ernst, 2012, Annotated catalogue of the flat bug family Aradidae Brullé, 1836 of Madagascar and adjacent islands (Hemiptera: Heteroptera), pp. 45-63 in Zootaxa 3426 (1) on page 49, DOI: 10.11646/zootaxa.3426.1.3, http://zenodo.org/record/214110
Surface Brightness Fluctuations to constrain secondary stellar populations: Revealing very low-metallicity stars in massive galaxies
Creators: name: Beltran, Pablo Rodriguez
name: Vazdekis, Alexandre
name: Cervino, Miguel
name: Beasley, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The aim of this work is to explore the potential of Surface Brightness Fluctuations (SBF) for studying composite stellar populations (CSP). To do so, we have computed the standard (mean) and SBF spectra with E-MILES stellar population synthesis code. We have created a set of models composed by different mass fractions of two single stellar populations (SSP), as a first approximation of a CSP scenario. With these models we present an ensemble of SBF colour-colour diagnostic diagrams that reveal different secondary populations depending on the bands used. For this work we focus on those colours capable of unveiling small fractions of metal-poor components in elliptical galaxies, which are dominated by old metal-rich stellar populations. We fit a set of synthetic models and a selection of nearby elliptical galaxies to our CSP models using both mean and SBF colours. We find that the results are highly improved and return small secondary components when mean and SBF values are applied simultaneously, instead of employing them separately or as a constraint. Finally, we explore the possibility of tracking chemical enrichment histories by including in the analysis a variety of SBF colours. For this purpose we present an example where, with two different SBF colour-colour diagrams, we untangle a small contribution of a young solar population and an old metal-poor component from an old solar principal population. The results we have found are promising, but limited by the available data. We highlight the urgent need for new, better and more consistent SBF observations.
description: 25 pages, 19 figures, Published MNRAS
Feasibility and effects of an integrative cognitive behavioural and mindfulness intervention (I-CBTM) and a feedback-informed treatment (FIT) approach for adolescent anxiety
Creators: name: Tam, Huiyi Eve
Publisher: name: CQUniversity
Year: 2021
Subjects: subject: 110319 Psychiatry (incl. Psychotherapy)
subject: FOS: Clinical medicine
subject: 170106 Health, Clinical and Counselling Psychology
subject: FOS: Psychology

description: Cognitive behavioural therapy (CBT) is recognised as a first-line psychotherapeutic treatment for adolescent anxiety. However, many adolescents continue to suffer from the condition even after completing CBT. The current research attempted to enhance the existing treatment through two approaches: (1) the incorporation of mindfulness techniques into the CBT, to offer coping strategy choices, and (2) the inclusion of a feedback-informed treatment (FIT) approach, to enhance adolescent engagement in treatment. In this research, an individual, integrative CBT-mindfulness intervention (I-CBTM) with/without a FIT approach was developed for 12- to 19-year-olds with anxiety, and subsequently implemented and evaluated in natural settings. A pilot-testing and a subsequent larger-scale main trial were conducted to investigate the feasibility of the intervention program alongside the feedback effect. Data were mainly collected from therapists and adolescent participants at pre-, mid- and post-treatment and 3, 6 and 12 months post-treatment; session-by-session symptom tracking was also included. The overall findings showed that the I-CBTM with/without the FIT was acceptable and effective for the adolescents, largely producing early treatment progress and statistically significant, reliable and durable outcomes. The feedback effect was not statistically significant, though a meta-analysis, which was conducted as part of this research, found a small effect size for FIT approaches (Tam & Ronan, 2017). Whilst still in its infancy, the present integrative intervention model for adolescent anxiety offers innovative opportunities for development in practice and research. Future rigorous, in-depth, large-scale trials are required to further refine this model, ultimately offering an effective, appealing and accessible intervention for this population.
Undercomplete Blind Subspace Deconvolution via Linear Prediction
Creators: name: Szabo, Zoltan
name: Poczos, Barnabas
name: Lorincz, Andras
Publisher: name: arXiv
Year: 2007
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: We present a novel solution technique for the blind subspace deconvolution (BSSD) problem, where temporal convolution of multidimensional hidden independent components is observed and the task is to uncover the hidden components using the observation only. We carry out this task for the undercomplete case (uBSSD): we reduce the original uBSSD task via linear prediction to independent subspace analysis (ISA), which we can solve. As it has been shown recently, applying temporal concatenation can also reduce uBSSD to ISA, but the associated ISA problem can easily become `high dimensional' [1]. The new reduction method circumvents this dimensionality problem. We perform detailed studies on the efficiency of the proposed technique by means of numerical simulations. We have found several advantages: our method can achieve high quality estimations for smaller number of samples and it can cope with deeper temporal convolutions.
description: 12 pages
Bell's inequality test with time-delayed two-particle correlations
Creators: name: Lebedev, A. V.
name: Blatter, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Adopting the frame of mesoscopic physics, we describe a Bell type experiment involving time-delayed two-particle correlation measurements. The indistinguishability of quantum particles results in a specific interference between different trajectories. We show how the non-locality in the time-delayed correlations due to the indistinguishability of the quantum particles manifests itself in the violation of a Bell inequality, where the degree of violation is related to the accuracy of the measurement. We demonstrate how the interrelation between the orbital- and the spin exchange symmetry can by exploited to infer knowledge on spin-entanglement from a measurement of orbital entanglement.
description: 8 pages, 4 figures
X-ray spectral components of the blazar and binary black hole candidate OJ 287 (2005-2020)
Creators: name: Komossa, S.
name: Grupe, D.
name: Parker, M. L.
name: Gómez, J. L.
name: Valtonen, M. J.
name: Nowak, M. A.
name: Jorstad, S. G.
name: Haggard, D.
name: Chandra, S.
name: Ciprini, S.
name: Dey, L.
name: Gopakumar, A.
name: Hada, K.
name: Markoff, S.
name: Neilsen, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a comprehensive analysis of all XMM-Newton spectra of OJ 287 spanning 15 years of X-ray spectroscopy of this bright blazar. We also report the latest results from our dedicated Swift UVOT and XRT monitoring of OJ 287 which started in 2015, along with all earlier public Swift data since 2005. During this time interval, OJ 287 was caught in extreme minima and outburst states. Its X-ray spectrum is highly variable and encompasses all states seen in blazars from very flat to exceptionally steep. The spectrum can be decomposed into three spectral components: Inverse Compton (IC) emission dominant at low-states, super-soft synchrotron emission which becomes increasingly dominant as OJ 287 brightens, and an intermediately-soft (Gamma_x=2.2) additional component seen at outburst. This last component extends beyond 10 keV and plausibly represents either a second synchrotron/IC component and/or a temporary disk corona of the primary supermassive black hole (SMBH). Our 2018 XMM-Newton observation, quasi-simultaneous with the Event Horizon Telescope observation of OJ 287, is well described by a two-component model with a hard IC component of Gamma_x=1.5 and a soft synchrotron component. Low-state spectra limit any long-lived accretion disk/corona contribution in X-rays to a very low value of L_x/L_Edd < 5.6 times 10^(-4) (for M_(BH, primary) = 1.8 times 10^10 M_sun). Some implications for the binary SMBH model of OJ 287 are discussed.
description: 14 pages. MNRAS, in press
Iwasawa decompositions of split Kac-Moody groups
Creators: name: De Medts, Tom
name: Köhl, Ralf
name: Horn, Max
Publisher: name: arXiv
Year: 2007
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20E42, 51E24

description: We characterize all fields F for which a group with an F-locally split root group datum admits an Iwasawa decomposition. This class of groups in particular includes the split semisimple algebraic groups and the split Kac-Moody groups.
Evidence for adaptive relationships between body morphology, body size and swimming performance in British Columbia populations of juvenile coho salmon, Oncorhynchus kisutch
Creators: name: Taylor, Eric Burke
Publisher: name: University of British Columbia
Year: 2010

description: Morphological comparison of ten populations of juvenile coho salmon, Oncorhynchus kisutch, from streams tributary to the Fraser River upstream of Hell's Gate and streams in the lower Fraser Valley and Strait of Georgia region suggested that coastal juveniles were more robust (deeper bodies and caudal peduncles, shorter heads and larger median fins) than interior juveniles. Discriminant function analysis indicated that juvenile coho could be identified as to river of origin with 71 percent accuracy; juveniles from coastal streams were less successfully classified as to stream of origin (48-64 percent) than juveniles from interior streams (83-93 percent); however, juveniles could be successfully identified as of either coastal or interior in origin with 93 percent accuracy. Features of body robustness were important in discriminating between coastal and interior individuals. Three populations were studied in detail: Coldwater River (interior), Wade Creek (lower Fraser River Valley) and Morrison Creek (east coast of Vancouver Island). In these populations the coastal-interior morphological differences were consistent over successive years, and in laboratory reared individuals. These experiments suggest that the morphological differences between coastal and interior fish are, at least, in part inherited. In addition, adult coho from the Coldwater River and Morrison Creek, exhibited morphological differences similar to the juveniles. Burst swimming tests, using both wild and laboratory reared individuals from the three study streams, indicated that in the first few hundredths of a second of a "fast-start" the robust-bodied coastal juveniles attain greater burst velocities than similar sized interior juveniles. In addition, newly emerged fry from Morrison Creek attained greater burst velocities, and had greater survival from predation, than Wade Creek fry. Both Wade Creek and Morrison Creek are coastal populations but Morrison Creek fry are larger at emergence than Wade Creek fry. In frictional drag determinations and stamina swimming experiments, the fusiform interior (Coldwater River) juveniles had both lower drag coefficients and greater stamina than the robust-bodied individuals from Wade and Morrison creeks. These observations suggest that body form in juvenile coho salmon is adaptive. The fusiform body shape of interior coho may be the result of selection for increased sustained swimming performance due to the long and difficult freshwater migrations these stocks must perform. In contrast, since coastal populations make relatively short freshwater migrations, body form may be subject to less intense selection. Body form in coastal coho, however, may be subject to selection for features that reduce susceptibility to predation, i.e. deep, robust bodies and large fry at emergence.
Accurate Total Energies from the Adiabatic-Connection Fluctuation-Dissipation Theorem
Creators: name: Woods, Nick D.
name: Entwistle, Michael T.
name: Godby, Rex W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In the context of inhomogeneous one-dimensional finite systems, recent numerical advances [Phys. Rev. B 103, 125155 (2021)] allow us to compute the exact coupling-constant dependent exchange-correlation kernel $f^λ_\text{xc}(x,x',ω)$ within linear response time-dependent density functional theory. This permits an improved understanding of ground-state total energies derived from the adiabatic-connection fluctuation-dissipation theorem (ACFDT). We consider both `one-shot' and `self-consistent' ACFDT calculations, and demonstrate that chemical accuracy is reliably preserved when the frequency dependence in the exact functional $f_\text{xc}[n](ω=0)$ is neglected. This performance is understood on the grounds that the exact $f_\text{xc}[n]$ varies slowly over the most relevant $ω$ range (but not in general), and hence the spatial structure in $f_\text{xc}[n](ω=0)$ is able to largely remedy the principal issue in the present context: self-interaction (examined from the perspective of the exchange-correlation hole). Moreover, we find that the implicit orbitals contained within a self-consistent ACFDT calculation utilizing the adiabatic exact kernel $f_\text{xc}[n](ω=0)$ are remarkably similar to the exact Kohn-Sham orbitals, thus further establishing that the majority of the physics required to capture the ground-state total energy resides in the spatial dependence of $f_\text{xc}[n]$ at $ω= 0$.
Gabriela Kiliánová, Identität und Gedächtnis in der Slowakei. Die Burg Devín als Erinnerungsort
Creators: name: Vorzsák, Orsolya
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 4 (2013)
The O(1)-Kepler Problems
Creators: name: Meng, Guowu
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Let $n\ge 2$ be an integer. To each irreducible representation $σ$ of $\mathrm O(1)$, an $\mathrm {O}(1)$-Kepler problem in dimension $n$ is constructed and analyzed. This system is super integrable and when $n=2$ it is equivalent to a generalized MICZ-Kepler problem in dimension two. The dynamical symmetry group of this system is $\widetilde {\mathrm{Sp}}_{2n}(\mathbb R)$ with the Hilbert space of bound states ${\mathscr H}(σ)$ being the unitary highest weight representation of $\widetilde {\mathrm{Sp}}_{2n}(\mathbb R)$ with highest weight $$(\underbrace{-1/2, ..., -1/2}_{n-1}, -(1/2+|σ|)),$$ which occurs at the right-most nontrivial reduction point in the Enright-Howe-Wallach classification diagram for the unitary highest weight modules. (Here $|σ|=0$ or 1 depending on whether $σ$ is trivial or not.) Furthermore, it is shown that the correspondence $σ\leftrightarrow \mathscr H(σ)$ is the theta-correspondence for dual pair $(\mathrm{O}(1), \mathrm{Sp}_{2n}(\mathbb R))\subseteq \mathrm{Sp}_{2n}(\mathbb R)$.
description: Final published form
Thermodynamics of mixtures containing amines. XVII. Excess molar enthalpy and volume measurements for benzylamine + heptane or + 1-alkanol mixtures at 298.15 K. Application of the DISQUAC and ERAS models
Creators: name: Sanz, Luis Felipe
name: González, Juan Antonio
name: Hevia, Fernando
name: de la Fuente, Isaías García
name: Cobos, José Carlos
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Excess molar enthalpies, $H_{\text{m}}^{\text{E}}$, at 298.15 K and 0.1 MPa have been measured by means of a Tian-Calvet microcalorimeter for the systems benzylamine (phenylmethanamine) + heptane, or + methanol, or + 1-propanol, or + 1-pentanol, or + 1-heptanol, or + 1-decanol. In addition, excess molar volumes, $V_{\text{m}}^{\text{E}}$, at the same conditions have been also determined using a densimeter Anton Paar model DSA 5000 for the benzylamine + heptane mixture. The $H_{\text{m}}^{\text{E}}$ of this solution is large and positive since at 298.15 K the system temperature is close to its upper critical solution temperature. Thus, systems with n-alkanes show positive deviations from the Raoult's law. The measured $|V_{\text{m}}^{\text{E}}|$ values are low, indicating the existence of large structural effects. $H_{\text{m}}^{\text{E}}$ values of mixtures involving 1-alkanols are large and negative. That is, interactions between unlike molecules are dominant and the systems are characterized by negative deviations from Raoult's law. It is shown that the enthalpy of the hydrogen bonding between molecules of 1-alkanol and benzyalmine are more negative than those between 1-alkanol molecules. The $V_{\text{m}}^{\text{E}}$ values of the systems with 1-alkanols are also large and negative, and are determined mainly by interactional effects since they increase in line with $H_{\text{m}}^{\text{E}}$ and with the alcohol size. The different contributions to $H_{\text{m}}^{\text{E}}$ have been evaluated. The systems have been studied using the DISQUAC and ERAS models. ERAS describes correctly the $V_{\text{m}}^{\text{E}}$ function. DISQUAC largely improves ERAS results on $H_{\text{m}}^{\text{E}}$ or on excess molar heat capacities at constant pressure for the mixtures with 1-alkanols, which underlines that physical interactions are very relevant in such solutions.
Genuine Electronic Structure and Superconducting Gap Structure in (Ba$_{0.6}$K$_{0.4}$)Fe$_{2}$As$_{2}$ Superconductor
Creators: name: Cai, Yongqing
name: Huang, Jianwei
name: Miao, Taimin
name: Wu, Dingsong
name: Gao, Qiang
name: Li, Cong
name: Xu, Yu
name: Jia, Junjie
name: Wang, Qingyan
name: Huang, Yuan
name: Liu, Guodong
name: Zhang, Fengfeng
name: Zhang, Shenjin
name: Yang, Feng
name: Wang, Zhimin
name: Peng, Qinjun
name: Xu, Zuyan
name: Zhao, Lin
name: Zhou, X. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The electronic structure and superconducting gap structure are prerequisites to establish microscopic theories in understanding the superconductivity mechanism of iron-based superconductors. However, even for the most extensively studied optimally-doped (Ba$_{0.6}$K$_{0.4}$)Fe$_2$As$_2$, there remain outstanding controversies on its electronic structure and superconducting gap structure. Here we resolve these issues by carrying out high-resolution angle-resolved photoemission spectroscopy (ARPES) measurements on the optimally-doped (Ba$_{0.6}$K$_{0.4}$)Fe$_2$As$_2$ superconductor using both Helium lamp and laser light sources. Our results indicate the "flat band" feature observed around the Brillouin zone center in the superconducting state originates from the combined effect of the superconductivity-induced band back-bending and the folding of a band from the zone corner to the center. We found direct evidence of the band folding between the zone corner and the center in both the normal and superconducting state. Our resolution of the origin of the flat band makes it possible to assign the three hole-like bands around the zone center and determine their superconducting gap correctly. Around the zone corner, we observe a tiny electron-like band and an M-shaped band simultaneously in both the normal and superconducting states. The obtained gap size for the bands around the zone corner ($\sim$5.5 meV) is significantly smaller than all the previous ARPES measurements. Our results establish a new superconducting gap structure around the zone corner and resolve a number of prominent controversies concerning the electronic structure and superconducting gap structure in the optimally-doped (Ba$_{0.6}$K$_{0.4}$)Fe$_2$As$_2$. They provide new insights in examining and establishing theories in understanding superconductivity mechanism in iron-based superconductors.
description: 26 Pages, 7 figures