cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Im$\{χ^{(3)}\}$ spectra of 110-cut GaAs, GaP, and Si near the two-photon absorption band edge
Creators: name: Furey, Brandon J
name: Barba-Barba, Rodrigo M.
name: Carriles, Ramon
name: Bernal, Alan
name: Mendoza, Bernardo S.
name: Downer, Michael C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Spectra of the degenerate two-photon absorption coefficient $β(ω)$, anisotropy parameter $σ(ω)$, and dichroism parameter $δ(ω) = \big[σ(ω) + 2η(ω)\big]/2$ of crystalline 110-cut GaAs, GaP, and Si at 300 K were measured using femtosecond pump-probe modulation spectroscopy over an excitation range in the vicinity of each material's half-band gap $E_g/2$ (overall $0.62 < \hbar ω< 1.91$ eV, or $2000 > λ> 650$ nm). Together these three parameters completely characterize the three independent components of the imaginary part of the degenerate third-order nonlinear optical susceptibility tensor $\mathrm{Im}\{χ^{(3)}_{abcd}(ω)\}$. In direct-gap GaAs, these components peak at $\hbar ω\approx 0.78 E_g$ which is close to the peak at $\hbar ω= 0.71 E_g$ predicted by the Jones-Reiss phenomenological model. The dispersion is comparable to ab initio calculations. In indirect-gap GaP and Si, these components tend to increase with $\hbar ω$ over our tuning range. In Si, the dispersion differs significantly from predictions of semi-empirical models and ab initio calculations do not account for transitions below the two-photon direct band gap, motivating further investigation. Kleinman symmetry was observed to be broken in all three materials. We also note anomalies observed and their possible origins, emphasizing the advantages of a 2-beam experiment in identifying the contribution of various nonlinear effects.
description: 62 pages, 63 figures, 86 references. The following article has been accepted by J. Appl. Phys. After it is published, it will be found at https://aip.scitation.org/journal/jap; added references, changes to manuscript after peer review, minor changes to supplementary material, and typos corrected
Search for New Physics in Lepton + Photon + X Events with 929 pb-1 of ppbar Collisions at roots = 1.96 TeV
Creators: name: al., A. Abulencia et
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present results of a search at CDF in 929 pb-1 of ppbar collisions at 1.96 TeV for the anomalous production of events containing a high-transverse momentum charged lepton (either electron or muon) and photon, accompanied by missing transverse energy (MET), and/or additional leptons and photons, and jets (X). We use the same selection criteria as in a previous CDF Run I search, but with an order-magnitude larger data set, a higher ppbar collision energy, and the CDF II detector. We find 163 Lepton + Photon + MET + X events, compared to an expectation of 150.6+-13.0 events. We observe 74 Multi-Lepton + Photon + X events, compared to an expectation of 65.1+-7.7 events. We find no events similar to the Run I 2 electrons + 2 photons + MET event.
description: 15 pages, 13 figures
Dynamiken der Gewalt. Formen und Sinn männlichen Gewalthandelns
Creators: name: Schuck, Hartwig
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Life-cycle of streaks in the buffer layer of wall-bounded turbulence
Creators: name: Bae, H. Jane
name: Lee, Myoungkyu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Streaks in the buffer layer of wall-bounded turbulence are tracked in time to study their life-cycle. Spatially and temporally resolved direct numerical simulation data is used to analyze the strong wall-parallel movements conditioned to low-speed streamwise flow. The analysis of the streaks shows that there is a clear distinction between wall-attached and detached streaks, and that the former can be further categorized into streaks that are contained in the buffer layer and the ones that reach the outer region. The results reveal that streaks are born in the buffer layer, coalescing with each other to create larger streaks that are still attached to the wall. Once the streak becomes large enough, it starts to meander due to the large streamwise-to-wall-normal aspect ratio, and consequently the elongation in the streamwise direction, which makes it more difficult for the streak to be oriented strictly in the streamwise direction. While the continuous interaction of the streaks allows the super-structure to span extremely long temporal and length scales, individual streak components are relatively small and short-lived. Tall-attached streaks eventually split into wall-attached and wall-detached components. These wall-detached streaks have a strong wall-normal velocity away from the wall, similar to ejections or bursts observed in the literature. Conditionally averaging the flow fields to these split events show that the detached streak has not only a larger wall-normal velocity compared to the wall-attached counterpart, it also has a larger (less negative) streamwise velocity, similar to the velocity field at the tip of a vortex cluster.
The eight monophonic political planctus of the Florence manuscript
Creators: name: Taylor, Leslie Anne
Publisher: name: University of British Columbia
Year: 2009

description: The medieval planctus is a Latin lament, composed in great numbers on Biblical themes as well as for the death of political figures or the destruction of cities. It appeared in both monophonic and polyphonic form, and had counterparts in a number of vernacular languages. The manuscript Biblioteca Mediceo-Laurenziana Pluteo 29.1, known as the Florence manuscript, contains eight monophonic planctus in the memory of well-known public figures of the late twelfth and early thirteenth centuries. This thesis will examine these compositions as a collection. The monophonic repertoire of the middle ages has been examined in a relatively limited fashion; the florid Latin repertoire, which includes these planctus, has been studied hardly at all. This thesis will provide a musical analysis based upon the text, to prove that the underlying compositional basis for these widely disparate pieces was the same. The planctus span a period of seventy years, and differ greatly in length, textual structure, and musical form. However, as this work will demonstrate, despite their differences, they follow essentially the same inner logic. The analyses contained in the thesis are based upon study of both the syntax and poetry of the text, and seek to discover the relationship of the music to these textual aspects. Various facets of the music (cadence structure, melodic outline, ambitus, and mode) are included in the study. In the process of this study, other facts about the planctus also come to light: the importance of pitches grouped into melodic phrases; mode as an expressive tool rather than a restrictive set of parameters; and the presence of various forms of descriptive composition, or word-painting, often considered not to exist in medieval music. The thesis draws conclusions regarding these aspects of the music, and how they are all used to the greater expression of the texts. The results of this analysis conclude that the eight planctus, while differing in surface characteristics, are the outcome of a single compositional approach, that of the text as a departure point for the music.
Gendersensible Beratung – Ein Tagungsbericht
Creators: name: Gröning, Katharina
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Theoretical constraints imposed by gradient detection and dispersal on microbial size in astrobiological environments
Creators: name: Lingam, Manasvi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Biological Physics (physics.bio-ph)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The capacity to sense gradients efficiently and acquire information about the ambient environment confers many advantages like facilitating movement toward nutrient sources or away from toxic chemicals. The amplified dispersal evinced by organisms endowed with motility is possibly beneficial in related contexts. Hence, the connections between information acquisition, motility, and microbial size are explored from an explicitly astrobiological standpoint. By using prior theoretical models, the constraints on organism size imposed by gradient detection and motility are elucidated in the form of simple heuristic scaling relations. It is argued that environments such as alkaline hydrothermal vents, which are distinguished by the presence of steep gradients, might be conducive to the existence of "small" microbes (with radii of $\gtrsim 0.1$ $μ$m) in principle, when only the above two factors are considered; other biological functions (e.g., metabolism and genetic exchange) could, however, regulate the lower bound on microbial size and elevate it. The derived expressions are potentially applicable to a diverse array of settings, including those entailing solvents other than water; for example, the lakes and seas of Titan. The paper concludes with a brief exposition of how this formalism may be of practical and theoretical value to astrobiology.
description: Published in Astrobiology; 39 pages; 2 figures
Quasinormal modes of black holes localized on the Randall-Sundrum 2-brane
Creators: name: Nozawa, Masato
name: Kobayashi, Tsutomu
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate conformal scalar, electromagnetic, and massless Dirac quasinormal modes of a brane-localized black hole. The background solution is the four-dimensional black hole on a 2-brane that has been constructed by Emparan, Horowitz, and Myers in the context of a lower dimensional version of the Randall-Sundrum model. The conformally transformed metric admits a Killing tensor, allowing us to obtain separable field equations. We find that the radial equations take the same form as in the four-dimensional "braneless" Schwarzschild black hole. The angular equations are, however, different from the standard ones, leading to a different prediction for quasinormal frequencies.
description: 10 pages, 7 figures; references added, version to appear in PRD
33. Feministischer Juristinnentag in Bielefeld – Ein Tagungsbericht
Creators: name: Harzer, Regina
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
[Frases padrão em mỹky]
Creators: name: Mỹky, Janaxi
name: Rondon Amarante, Elizabeth
name: Bardagil Mas, Bernat
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: irn

description: 1 arquivo WAV. Digitalizado pela pesquisadora no Brasil.
Excitation of a homogeneous dielectric sphere by a point electric dipole
Creators: name: Gaponenko, Roman
name: Rasskazov, Ilia L.
name: Moroz, Alexander
name: Ladutenko, Konstantin
name: Shcherbakov, Alexey
name: Belov, Pavel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Electrically small dielectric antennas are of great interest for modern technologies, since they can significantly reduce the physical size of electronic devices for processing and transmitting information. We investigate the influence of the resonance conditions of an electrically small dielectric spherical antenna with a high refractive index on its directivity and analyze the dependence of these resonances on the effectively excited modes of the dielectric sphere.
description: 4 pages, 4 figures, for the METANANO 2021 VI International Conference on Metamaterials and Nanophotonics (https://metanano.itmo.ru)
Konstruktives Spannungsverhältnis: Frauen- und Geschlechterforschung und gleichstellungspolitische Umsetzungsstrategien im Kontext diskursiver Annäherung; Zwischen Anerkennung und Marginalisierung: Gleichstellungspolitik in Zeiten von Exzellenz und Globalisierung – Zwei Tagungsberichte
Creators: name: Plöger, Lydia
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Constraining the Milky Way's Ultraviolet to Infrared SED with Gaussian Process Regression
Creators: name: Fielder, Catherine E.
name: Newman, Jeffrey A.
name: Andrews, Brett H.
name: Zasowski, Gail
name: Boardman, Nicholas F.
name: Licquia, Tim
name: Masters, Karen L.
name: Salim, Samir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Improving our knowledge of global Milky Way (MW) properties is critical for connecting the detailed measurements only possible from within our Galaxy to our understanding of the broader galaxy population. We train Gaussian Process Regression (GPR) models on SDSS galaxies to map from galaxy properties (stellar mass, apparent axis ratio, star formation rate, bulge-to-total ratio, disk scale length, and bar vote fraction) to UV (GALEX $FUV/NUV$), optical (SDSS $ugriz$) and IR (2MASS $JHKs$ and WISE $W1/W2/W3/W4$) fluxes and uncertainties. With these models we estimate the photometric properties of the MW, resulting in a full UV-to-IR spectral energy distribution (SED) as it would be measured externally, viewed face-on. We confirm that the Milky Way lies in the green valley in optical diagnostic diagrams, but show for the first time that the MW is in the star-forming region in standard UV and IR diagnostics -- characteristic of the population of red spiral galaxies. Although our GPR method predicts one band at a time, the resulting MW UV--IR SED is consistent with SEDs of local spirals with characteristics broadly similar to the MW, suggesting that these independent predictions can be combined reliably. Our UV--IR SED will be invaluable for reconstructing the MW's star formation history using the same tools employed for external galaxies, allowing comparisons of results from \textit{in situ} measurements to those from the methods used for extra-galactic objects.
description: 23 pages, 11 figures, 4 appendices, 31 pages total, published in Monthly Notices of the Royal Astronomical Society
Helioseismic test of non-homologous solar radius changes with the 11-year activity cycle
Creators: name: Lefebvre, S.
name: Kosovichev, A. G.
name: Rozelot, J. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent models of variations of the Sun's structure with the 11-year activity cycle by Sofia et al (2005) predict strong non-homologous changes of the radius of subsurface layers, due to subsurface magnetic fields and field-modulated turbulence. According to their best model the changes of the surface radius may be 1000 times larger than those at the depth of 5 Mm. We use f-mode oscillation frequency data from the MDI instrument of Solar and Heliospheric Observatory (SOHO) and measurements of the solar surface radius variations from SOHO and ground-based observatories during solar cycle 23 (1996-2005) to put constraints on the radius changes. The results show that the above model overestimates the change of the radius at the surface relative to the change at 5Mm.
description: 9 pages, 2 figures, ApJ Lett in press
A Policy Framework for Inclusion of Uploaded Publicly Available External Data Sets in the N3C Data Enclave
Creators: name: N3C Consortium
Publisher: name: Zenodo
Year: 2021
Subjects: N3C

description: This policy establishes expectations and a process (available here) for requesting and approving inclusion of a publicly available dataset (PAD) in the National COVID Cohort Collaborative (N3C) Data Enclave, as well as the request for use of an external data set available in the Enclave in a given Data Use Request (DUR). This policy and process is designed to help manage the privacy and security of the Enclave data and ensure that the data contributed to the LDS are protected and in compliance with the terms of the Data Transfer Agreement (DTA) and Data Use Agreement (DUA), and any statutes or regulations while enhancing the potential value of research conducted in N3C by adding other publicly available datasets.
Dominant Nuclear Outflow Driving Mechanisms in Powerful Radio Galaxies
Creators: name: Batcheldor, Dan
name: Tadhunter, Clive
name: Holt, Joanna
name: Morganti, Raffaella
name: O'Dea, Christopher P.
name: Axon, David J.
name: Koekemoer, Anton
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In order to identify the dominant nuclear outflow mechanisms in Active Galactic Nuclei, we have undertaken deep, high resolution observations of two compact radio sources (PKS 1549-79 and PKS 1345+12) with the Advanced Camera for Surveys (ACS) aboard the Hubble Space Telescope. Not only are these targets known to have powerful emission line outflows, but they also contain all the potential drivers for the outflows: relativistic jets, quasar nuclei and starbursts. ACS allows the compact nature (<0.15") of these radio sources to be optically resolved for the first time. Through comparison with existing radio maps we have seen consistency in the nuclear position angles of both the optical emission line and radio data. There is no evidence for bi-conical emission line features on the large-scale and there is a divergance in the relative position angles of the optical and radio structure. This enables us to exclude starburst driven outflows. However, we are unable to clearly distinguish between radiative AGN wind driven outflows and outflows powered by relativistic radio jets. The small scale bi-conical features, indicative of such mechanisms could be below the resolution limit of ACS, especially if aligned close to the line of sight. In addition, there may be offsets between the radio and optical nuclei induced by heavy dust obscuration, nebular continuum or scattered light from the AGN.
description: 9 pages, 8 figures, emulateapj, ApJ Accepted
The 4-spinon dynamical structure factor of the Heisenberg chain
Creators: name: Caux, J. -S.
name: Hagemans, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the exact 4-spinon contribution to the zero-temperature dynamical structure factor of the spin-1/2 Heisenberg isotropic antiferromagnet in zero magnetic field, directly in the thermodynamic limit. We make use of the expressions for matrix elements of local spin operators obtained by Jimbo and Miwa using the quantum affine symmetry of the model, and of their adaptation to the isotropic case by Abada, Bougourzi and Si-Lakhal (correcting some overall factors). The 4-spinon contribution to the first frequency moment sum rule at fixed momentum is calculated. This shows, as expected, that most of the remaining correlation weight above the known 2-spinon part is carried by 4-spinon states. Our results therefore provide an extremely accurate description of the exact structure factor.
description: 13 pages
Διγλωσσία και μαθησιακές δυσκολίες: Η περίπτωση της ειδικής γλωσσικής διαταραχής
Creators: name: Λιάκου, Γλυκερία Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Διγλωσσία
Ειδική γλωσσική διαταραχή-Παρέμβαση
Diglossia
Specific language impairment-Intervention

description: Στην παρούσα μελέτη γίνεται μια προσπάθεια να παρουσιαστεί το φαινόμενο της διγλωσσίας και η σχέση του με τις μαθησιακές δυσκολίες και ειδικότερα να εξεταστεί η περίπτωση της ειδικής γλωσσικής διαταραχής. Για τον λόγο αυτό στο πρώτο κεφάλαιο της εργασίας, αρχικά, γίνεται μια προσπάθεια να οριοθετηθεί η έννοια της διγλωσσίας. Στο δεύτερο κεφάλαιο, αναλύονται οι μορφές διγλωσσίας καθώς και οι συνθήκες κατάκτησης δεύτερης γλώσσας. Στο τρίτο κεφάλαιο γίνεται μια παρουσίαση και ανάλυση της ειδικής γλωσσικής διαταραχής, τη σχέση της με το σχολικό περιβάλλον αλλά και τρόπους αντιμετώπισης της. Τέλος στο τέταρτο κεφάλαιο, γίνεται μια παρουσίαση ερευνών που αναφέρονται σε παιδιά δίγλωσσα και το συσχετισμό της διγλωσσίας με τις γλωσσικές διαταραχές
description: The present study attempts to present the phenomenon of bilingualism and its relation to learning difficulties and, in particular, to examine the case of the particular language disorder. That is why in the first chapter of the work, initially, an attempt is made to define the concept of bilingualism. The second chapter analyzes the forms of bilingualism as well as the second language acquisition conditions. The third chapter presents a presentation and analysis of the specific language disorder, its relation to the school environment and ways of dealing with it. Finally, in the fourth chapter, there is a presentation of researches referring to bilingual children and the correlation of bilingual language with language disorders
External field-induced dynamics of a charged particle on a closed helix
Creators: name: Siemens, Ansgar
name: Schmelcher, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We investigate the dynamics of a charged particle confined to move on a toroidal helix while being driven by an external time-dependent electric field. The underlying phase space is analyzed for linearly and circularly polarized fields. For small driving amplitudes and a linearly polarized field, we find a split-up of the chaotic part of the phase space which prevents the particle from inverting its direction of motion. This allows for a non-zero average velocity of chaotic trajectories without breaking the well-known symmetries commonly responsible for directed transport. Within our chosen normalized units, the resulting average transport velocity is constant and does not change significantly with the driving amplitude. A very similar effect is found in case of the circularly polarized field and low driving amplitudes. Furthermore, when driving with a circularly polarized field, we unravel a second mechanism of the split-up of the chaotic phase space region for very large driving amplitudes. There exists a wide range of parameter values for which trajectories may travel between the two chaotic regions by crossing a permeable cantorus. The limitations of these phenomena, as well as their implication on manipulating directed transport in helical geometries are discussed.
description: 10 pages, 5 figures
Unifying gauge couplings at the string scale
Creators: name: Emmanuel-Costa, David
name: Felipe, Ricardo Gonzalez
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the current precision electroweak data, we look for the minimal particle content which is necessary to add to the standard model in order to have a complete unification of gauge couplings and gravity at the weakly coupled heterotic string scale. We find that the addition of a vector-like fermion at an intermediate scale and a non-standard hypercharge normalization are in general sufficient to achieve this goal at two-loop level. Requiring the extra matter scale to be below the TeV scale, it is found that the addition of three vector-like fermion doublets with a mass around 700 GeV yields a perfect string-scale unification, provided that the affine levels are $(k_Y, k_2 ,k_3)=(13/3, 1, 2) $, as in the $SU(5) \times SU(5)$ string-GUT. Furthermore, if supersymmetry is broken at the unification scale, the Higgs mass is predicted in the range 125 GeV - 170 GeV, depending on the precise values of the top quark mass and $\tan β$ parameter.
description: 11 pages, 4 eps figures, using jpconf style, talk given at CORFU2005, RTN meeting ``The Quest for Unification: Theory Confronts Experiment'', 11 - 18 September 2005, Corfu, Greece
Energy Ranking Preservation in a N-Body Cosmological Simulation
Creators: name: Dantas, Christine C.
name: Ramos, Fernando M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we present a study of the cosmic flow from the point of view of how clusterings at different dynamical regimes in an expanding universe evolve according to a `coarse-grained' partitioning of their ranked energy distribution. By analysing a Lambda-CDM cosmological simulation from the Virgo Project, we find that cosmic flows evolve in an orderly sense, when tracked from their coarse-grained energy cells, even when nonlinearities are already developed. We show that it is possible to characterize scaling laws for the Pairwise Velocity Distribution in terms of the energy cells, generally valid at the linear and nonlinear clustering regimes.
description: 8 pages, 3 figures, accepted for publication in the MNRAS
Music appreciation and education
Creators: name: Zenker, Renate Andrea Ruth
Publisher: name: University of British Columbia
Year: 2009

description: There are many aspects of music education which require a firmer conceptual basis for their implementation in the school system, especially since questions about the necessity of music education itself have been raised throughout the history of education in Canada. In my thesis I address the question: What does it mean to appreciate music? I examined conceptual research on music appreciation, but discovered that as a body of literature it failed to present a coherent conceptualization of music appreciation. The bulk of my thesis consists in a careful conceptual unpacking of music appreciation and the related notions of listening and hearing, conceptual apparatus and expression in music. To determine a sense of music appreciation which is educationally relevant, I begin with a conceptual analysis of appreciation and determine its relationship to the complex nature of music. The epistemological sense of appreciation focuses on evaluation of music based in knowledge of its structure and its ability to express something to us through that structure. This is achieved through listening to music with a reflective conceptual apparatus which allows us to hear the music in such a way that we can ascribe value to it and in the most sophisticated forms of music appreciation, justify our value claims by articulating what we hear. In the final chapter, I discuss the educational implications of my conception of music appreciation and areas for future research.
Non-SUSY Heterotic String Vacua of Gepner Models with Vanishing Cosmological Constant
Creators: name: Aoyama, Koji
name: Sugawara, Yuji
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a natural generalization of that given in [arXiv:2005.13198 [hep-th]] to heterotic string. Namely, starting from the generic Gepner models for Calabi-Yau 3-folds, we construct the non-SUSY heterotic string vacua with the vanishing cosmological constant at the one loop. We especially focus on the asymmetric orbifolding based on some discrete subgroup of the chiral $U(1)$-action which acts on both of the Gepner model and the $SO(32)$ or $E_8\times E_8$-sector. We present a classification of the relevant orbifold models leading to the string vacua with the properties mentioned above. In some cases, the desired vacua can be constructed in the manner quite similar to those given in [arXiv:2005.13198 [hep-th]] for the type II string, in which the orbifold groups contain two generators with the discrete torsions. On the other hand, we also have simpler models that are just realized as the asymmetric orbifolds of cyclic groups with only one generator.
description: 1+18 pages, no figure, to be published in PTEP; v2 references added; v3 reference added. arXiv admin note: text overlap with arXiv:2005.13198
Phase diagrams in the three-flavor Nambu--Jona-Lasinio model with the Polyakov loop
Creators: name: Fukushima, Kenji
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present extensive studies on hot and dense quark matter with two light and one heavy flavors in the Nambu--Jona-Lasinio model with the Polyakov loop (so-called PNJL model). First we discuss prescription dependence in choosing the Polyakov loop effective potential and propose a simple and rather sensible ansatz. We look over quantitative comparison to the lattice measurement to confirm that the model captures thermodynamic properties correctly. We then analyze the phase structure with changing the temperature, quark chemical potential, quark masses, and coupling constants. We particularly investigate how the effective U_A(1) restoration and the induced vector-channel interaction at finite density would affect the QCD critical point.
description: 17 pages, 18 figures, Figure 18 (effect of g_V) replaced as corrected in Erratum. No change in other results
Editorial
Creators: name: Wrede, Birgitta
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Revisiting the Strong Shock Problem: Converging and Diverging Shocks in Different Geometries
Creators: name: Modelevsky, Elisha
name: Sari, Re'em
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Self-similar solutions to converging (implosions) and diverging (explosions) shocks have been studied before, in planar, cylindrical or spherical symmetry. Here we offer a unified treatment of these apparently disconnected problems . We study the flow of an ideal gas with adiabatic index $γ$ with initial density $ρ\sim r^{-ω}$, containing a strong shock wave. We characterize the self-similar solutions in the entirety of the parameter space $γ,ω$, and draw the connections between the different geometries. We find that only type II self-similar solutions are valid in converging shocks, and that in some cases, a converging shock might not create a reflected shock after its convergence. Finally, we derive analytical approximations for the similarity exponent in the entirety of parameter space.
description: 13 pages, 12 figures
Ungedeckte Unterstützungsbedarfe gewaltbetroffener Frauen: Antworten am Beispiel des Beratungsprojekts E.V.A.
Creators: name: Brandfaß, Ulrike
name: Glammeier, Sandra
name: Hornberg, Claudia
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Second symmetry in the Balb/c-C57BL/6 (B6) system, and anti-anti-self antibodies in old B6 mice
Creators: name: Faheemi, Abdulaziz
Publisher: name: University of British Columbia
Year: 2009

description: In order to establish the presence of anti-anti-self antibodies and study such MHC mimicking antibodies in the sera of alloimmune mice, reciprocal sets of alloantisera were raised between the following pairs of mice : Balb/c and C57BL/6 (B6), Balb/c and CBA, and B6 and CBA. After 10 weeks of alloimmunization, the presence of anti-anti-self antibodies could be detected by an avidin-biotin ELISA, and by inhibition of antibody and complement mediated cytotoxicity in the alloimmune B6 and Balb/c sera. Such antibodies belonged to the immunoglobulin G class. Considerably higher levels of anti-antiself antibodies were induced in alloimmune B6 mice compared to alloimmune Balb/c mice. Moreover, anti-anti-self antibodies spontaneously occurred in the serum of old B6 mice. Anti-anti-self antibodies in alloimmune B6 mice were shown to be highly specific. Anti-anti-self antibodies in both alloimmune and old B6 mice specifically inhibited the cytotoxicity of anti-foreign MHC antibodies present in the converse Balb/c anit-B6 antiserum. This indicates that these antibodies have a self MHC mimicking activity.
Die Beratungsstellen der ersten Frauenbewegung vom Kaiserreich bis zur Machtergreifung 1933
Creators: name: Gröning, Katharina
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2009

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 1 (2009)
Εφαρμογή των Γεωγραφικών Συστημάτων Πληροφοριών για τη βέλτιστη κατανομή αγροτεμαχίων στα Κέντρων Συγκέντρωσης βιομηχανικού ροδάκινου
Creators: name: Ευθυμιάδου, Αλεξάνδρα Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Κόστος Μεταφοράς
Ανάλυση μέγιστης κάλυψης
Γεωγραφικά Συστήματα Πληροφοριών
Cost of transport
Maximize coverage analysis
Geographic Information Systems

description: Στόχος της μεταπτυχιακής διατριβής είναι η ελαχιστοποίηση του κόστους μεταφοράς των ροδάκινων από τα αγροτεμάχια τα οποία παράγονται, στα κέντρα συγκέντρωσης α’ ύλης. Αποδέκτης του οικονομικού αποτελέσματος είναι ο παραγωγός. Η περιοχή η οποία μελετήθηκε είναι η Περιφερειακή Ενότητα Πέλλας, ένας νομός πολύ πλούσιος σε αγροτικά προϊόντα. Το ροδάκινο επιλέχθηκε μέσα από μια πληθώρα φρούτων διότι είναι από τις βασικότερες καλλιέργειες στον νομό. Το πρώτο και θεωρητικό μέρος εξηγεί στον αναγνώστη τις έννοιες του ροδάκινου, τα Γεωγραφικά Πληροφοριακά Συστήματα και την ανάλυση του δικτύου οι οποίες αξιοποιούνται στο πρακτικό μέρος της εργασίας. Ξεκινώντας την εργασία, θα πρέπει να βρεθούν οι βέλτιστες αποστάσεις των αγροτεμαχίων προς τα κέντρα παραλαβής ροδάκινων. Η βέλτιστη κατανομή των αγροτεμαχίων στα κέντρα παραλαβής πραγματοποιήθηκε με την εφαρμογή του προγράμματος ArcGis για να μεγιστοποιηθεί η κάλυψη των κέντρων παραλαβής ροδάκινων από τα αγροτεμάχια που του αναλογούν, έτσι ώστε ο χρόνος και η απόσταση αυτή να ελαχιστοποιείται. Τελειώνοντας με την βέλτιστη κατανομή και συνδυάζοντας τις πληροφορίες των αποστάσεων με οικονομικά στοιχεία δημιουργείται η κατάλληλη συνάρτηση για τον υπολογισμό του κόστους μεταφοράς των προϊόντων.
description: The aim of this paper is to minimize the cost of transporting peaches from the parcels produced in the concentration centers. The recipient of the economic result is the producer. The area studied was the Peripheral Unity of Pella, a prefecture rich in agricultural products. Peach was selected from a variety of fruits because it is one of the most important crops in the county. The first and theoretical part explains to the reader peach concepts, Geographic Information Systems and network analysis that are utilized in the practical part of the work. Starting the work, the optimal distances of the parcels to the peach picking centers must be found. The optimal distribution of parcels in the receiving centers was made by applying the ArcGis program to maximize the coverage of the peach picking centers from the parcels assigned to it so that the time and the distance are minimized. Ending with optimal allocation and combining distance information with economic data, the appropriate function is created to calculate the cost of transporting products.
Alter Hut zum neuen Kleid? Über den Status Quo der FrauenStudien an der Universität Bielefeld
Creators: name: Rumpold, Vanessa
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2016

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 5 (2016)
Οnline Communities in Web 2:0 – Blended Learning Communities
Creators: name: Θυμιανίδης, Βασίλης Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Μεικτός τρόπος μάθησης
Ηλεκτρονικές κοινότητες
Διαδικτυακή μάθηση
Blended Learning
Online Communities
Online Learning

description: In this dissertation we are going to try to examine the online communities in the digital era. What is really a community? Where does this definition coming from? We are going to give answers to some of our questions and especially we are going to give a definition of an online community. Also, we are going to examine the types of online communities, advantages and disadvantages of e-learning communities, the sense of community, social presence in a learning community and the interactivity. The purpose is to give a general idea of what an e-learning community is exactly. E-learning in our era has a direct connection with blended learning that is a mix method of e-learning and face to face learning methods. This is what really interests our survey in this dissertation. Generally the following research hypotheses will be tested: a. Students’ awareness of social presence in online subjects are related to their perceived learning and satisfaction with their instructor. b. Students’ awareness of social presence in online subjects are a predictor of their perceived learning. That’s why we are going to give a questionnaire to some students of the Master program “MA in Digital Media, Communication and Journalism” to examine further the phenomenon and if they feel social presence being members in a blended learning community. This is connected with how satisfied are they with the program and if blended learning is an efficient way of educating students.
description: Σε αυτή την έρευνα θα εξετάσουμε τις διαδικτυακές κοινότητες στην ψηφιακή εποχή. Τι είναι αλήθεια η κοινότητα; Από πού προέρχεται ο ορισμός; Θα δώσουμε απαντήσεις σε μερικές από τις ερωτήσεις και ειδικά θα δώσουμε έναν ορισμό για τις διαδικτυακές κοινότητες. Επίσης θα εξετάσουμε τους τύπους των ηλεκτρονικών κοινοτήτων, τα πλεονεκτήματα και τα μειονεκτήματα διαδικτυακών κοινοτήτων μάθησης, την αίσθηση της κοινότητας, την κοινωνική παρουσία στις διαδικτυακές κοινότητες μάθησης και την διαδραστικότητα. Ο σκοπός είναι να δώσουμε μια γενική ιδέα του τι είναι μια διαδικτυακή κοινότητα μάθησης. Η διαδικτυακή μάθηση στην εποχή μας έχει μια άμεση σύνδεση με την μεικτή μάθηση που είναι ένας μεικτός τρόπος μάθησης που συνδυάζει πρόσωπο με πρόσωπο μάθηση και διαδικτυακή μάθηση. Αυτό ακριβώς μας ενδιαφέρει και στην έρευνά μας. Γενικά η παρακάτω ερευνητική υποθέση θα εξεταστεί: Α) Πόσο σχετίζεται η κοινωνική παρουσία των μαθητών στα διαδικτυακά μαθήματα με την επιτυχημένη μάθηση Για αυτό δώσαμε ερωτηματολόγιο σε μερικούς μαθητές του μεταπτυχιακού προγράμματος MA in Digital Media, Communication and Journalism προκειμένου να εξετάσουμε το φαινόμενο, εάν δηλαδή νιώθουν κοινωνικά παρόντες στην μεικτή διαδικτυακή κοινότητα μάθησης. Αυτό συνδέεται με το πόσο ικανοποιημένοι είναι με το πρόγραμμα και εάν ο μειτός τρόπος μάθησης είναι αποτελεσματικός.
Moneymaking and economics in Aristotle's politics
Creators: name: Quillen, Henry T.
name: 0000-0001-9351-7583
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: subject: Aristotle
subject: Politics
subject: Acquisition
subject: Moneymaking
subject: Economics
subject: Economist
subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Classics
subject: Greek
subject: Money

description: Aristotle’s Politics I.8-11 contains a profound reflection on the relationship between moneymaking and the divergent needs of individuals and politics. It offers not only a clear confrontation with the issue of scarcity, but, unlike modern economics, also a causal explanation of limitless demand. Moreover, Aristotle suggests that the psychological consequences of scarcity pull human beings away from the satisfaction of a fuller range of their needs, and that clarity about those needs greatly weakens the human passion for limitless moneymaking. Need and utility, not unlimited acquisitiveness, are the focus of Aristotelian economics. Yet he also shows that clarity about human needs is quite rare, and, in political life, necessarily absent. I argue that Aristotle’s teaching in Politics I.8-11 is that the philosopher, an essentially private individual, is the true economist on account of his unique clarity about human neediness.
Strong decays of the low-lying bottom strange baryons
Creators: name: He, Hui-Zhen
name: Liang, Wei
name: Lü, Qi-Fang
name: Dong, Yu-Bing
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work, the strong decay behaviors of the $λ-$mode low-lying $Ξ_{b}$ and $Ξ_{b}^\prime$ baryons are investigated within the $^3P_0$ model. Our results suggest that all of the low-lying $\bar 3_F$ states $Ξ_b(2S)$, $Ξ_b(1P)$, and $Ξ_b(1D)$ have small decay widths of less than 20 MeV, and these states have good potentials to be observed in the $Ξ_b^\prime π$ and $Ξ_b^{\prime *} π$ invariant masses. Further, most of the $6_F$ multiplets are relatively narrow and may decay into the $Ξ_b π$, $Ξ_b^\prime π$, $Ξ_b^{\prime *} π$, and $Λ_b \bar K$ final states. Considering the masses and strong decay behaviors, we can assign the newly observed $Ξ_{b}(6100)$ resonance as the $Ξ_b(1P)$ state with $J^P=3/2^-$ and interpret the $Ξ_{b}(6227)$ structure as the $J^P=3/2^-$ $Ξ_b^\prime(1P)$ state with a proper mixing angle. We expect that our predictions for these excited bottom strange baryons will provide helpful information for future experimental research.
description: 7 pages, 3 figures. Minor modifications, accepted version
Intersektionen von Geschlecht und Indigenität in der Vorschulerziehung Ecuadors
Creators: name: Giebeler, Cornelia
Publisher: name: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG)
Year: 2016

description: IZGOnZeit. Onlinezeitschrift des Interdisziplinären Zentrums für Geschlechterforschung (IZG), IFFOnZeit Nr. 5 (2016)
Spin transfer torque in continuous textures: semiclassical Boltzmann approach
Creators: name: Piechon, Frederic
name: Thiaville, Andre
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider a microscopic model of itinerant electrons coupled via ferromagnetic exchange to a local magnetization whose direction vector n(r,t) varies in space and time. We assume that to first order in the spatial gradient and time derivative of n(r,t) the magnetization distribution function f(p,r,t) of itinerant electrons has the Ansatz form: f(p,r,t)=f_{parallel}(p)n(r,t)+ f_{1 r}(p) n ^ nabla_{r} n+f_{2 r}(p) nabla_{r} n+ f_{1 t}(p) n ^ partial_t n+f_{2 t}(p) partial_t n. Using then the Landau-Sillin equations of motion approach we derive explicit forms for the components f_{parallel}(p), f_{1 r}(p), f_{2 r}(p), f_{1 t}(p) and f_{2 t}(p) in "equilibrum" and in out of equilibrum situations for: (i) no scattering by impurities, (ii) spin conserving scattering and (iii) spin non-conserving scattering. The back action on the localized electron magnetization from the out of equilibrum part of the two components f_{1 r}, f_{2 r} constitutes the two spin transfer torque terms.
description: Revised version accepted for publication, 12 pages, one figure
Robust Generalization despite Distribution Shift via Minimum Discriminating Information
Creators: name: Sutter, Tobias
name: Krause, Andreas
name: Kuhn, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Information Theory (cs.IT)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Training models that perform well under distribution shifts is a central challenge in machine learning. In this paper, we introduce a modeling framework where, in addition to training data, we have partial structural knowledge of the shifted test distribution. We employ the principle of minimum discriminating information to embed the available prior knowledge, and use distributionally robust optimization to account for uncertainty due to the limited samples. By leveraging large deviation results, we obtain explicit generalization bounds with respect to the unknown shifted distribution. Lastly, we demonstrate the versatility of our framework by demonstrating it on two rather distinct applications: (1) training classifiers on systematically biased data and (2) off-policy evaluation in Markov Decision Processes.
description: 23 pages, 4 figures
Anomaly Cancellation in Supergravity with Fayet-Iliopoulos Couplings
Creators: name: Elvang, Henriette
name: Freedman, Daniel Z.
name: Kors, Boris
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review and clarify the cancellation conditions for gauge anomalies which occur when N=1, D=4 supergravity is coupled to a Kahler non-linear sigma-model with gauged isometries and Fayet-Iliopoulos couplings. For a flat sigma-model target space and vanishing Fayet-Iliopoulos couplings, consistency requires just the conventional anomaly cancellation conditions. A consistent model with non-vanishing Fayet-Iliopoulos couplings is unlikely unless the Green-Schwarz mechanism is used. In this case the U(1) gauge boson becomes massive and the D-term potential receives corrections. A Green-Schwarz mechanism can remove both the abelian and certain non-abelian anomalies in models with a gauge non-invariant Kahler potential.
description: 27 pages
Nematic versus ferromagnetic shells: new insights in curvature-induced effects
Creators: name: Napoli, Gaetano
name: Pylypovskyi, Oleksandr V.
name: Sheka, Denis D.
name: Vergori, Luigi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Within the framework of continuum theory, we draw a parallel between ferromagnetic materials and nematic liquid crystals confined on curved surfaces, which are both characterized by local interaction and anchoring potentials. We show that the extrinsic curvature of the shell combined with the out-of-plane component of the director field gives rise to chirality effects. This interplay produces an effective energy term reminiscent of the chiral term in cholesteric liquid crystals, with the curvature tensor acting as a sort of anisotropic helicity. We discuss also how the different nature of the order parameter, a vector in ferromagnets and a tensor in nematics, yields different textures on surfaces with the same topology as the sphere. In particular, we show that the extrinsic curvature governs the ground state configuration on a nematic spherical shell, favouring two antipodal disclinations of charge +1 on small particles and four $+1/2$ disclinations of charge located at the vertices of a square inscribed in a great circle on larger particles.