cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
One-loop corrections to ALP couplings
Creators: name: Bonilla, J.
name: Brivio, I.
name: Gavela, M. B.
name: Sanz, V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The plethora of increasingly precise experiments which hunt for axion-like particles (ALPs), as well as their widely different energy reach, call for the theoretical understanding of ALP couplings at loop-level. We derive the one-loop contributions to ALP-SM effective couplings, including finite corrections. The complete leading-order -- dimension five -- effective linear Lagrangian is considered. The ALP is left off-shell, which is of particular impact on LHC and accelerator searches of ALP couplings to $γγ$, $ZZ$, $Zγ$, $WW$, gluons and fermions. All results are obtained in the covariant $R_ξ$ gauge. A few phenomenological consequences are also explored as illustration, with flavour diagonal channels in the case of fermions: in particular, we explore constraints on the coupling of the ALP to top quarks, that can be extracted from LHC data, from astrophysical sources and from Dark Matter direct detection experiments such as PandaX, LUX and XENON1T. Furthermore, we clarify the relation between alternative ALP bases, the role of gauge anomalous couplings and their interface with chirality-conserving and chirality-flip fermion interactions, and we briefly discuss renormalization group aspects.
description: 58 pages, 11 figures. Full one-loop results available at https://notebookarchive.org/2021-07-9otlr9o . Algebraic error corrected, which does not affect the bulk of the computations
Historiographie an europäischen Höfen (16.-18. Jahrhundert). Studien zum Hof als Produktionsort von Geschichtsschreibung und historischer Repräsentation
Creators: name: Mout, Nicolette
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2010

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 59 Nr. 1 (2010)
Hans-Jürgen Bömelburg, Frühneuzeitliche Nationen im östlichen Europa
Creators: name: Bercoff, Giovanna Brogi
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2010

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 59 Nr. 1 (2010)
Standort- und Kommandanturbefehle des Konzentrationslagers Auschwitz 1940-1945.
Creators: name: Friedrich, Klaus-Peter
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2002

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 51 Nr. 4 (2002)
Kraków i Praga. Dwie stolice Europy Środkowej. Materiały międzynarodowej konferencji zorganizowanej w dniach 1-2 czerwca 2000
Creators: name: Lambrecht, Karen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2004

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 53 Nr. 1 (2004)
Herzog Albrecht von Preußen und Livland (1540-1551). Regesten aus dem Herzoglichen Briefarchiv und den Ostpreußischen Folianten
Creators: name: Körber, Esther-Beate
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 1 (2003)
Olgierd Kiec, Protestantyzm w Poznańskiem 1815-1918.
Creators: name: Matusik, Przemysław
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 3 (2003)
Ostmitteleuropa im 14.-17. Jahrhundert - eine Region oder Region der Regionen?
Creators: name: Bahlcke, Joachim
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2005

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 54 Nr. 4 (2005)
RSSi-based visitor tracking in museums via cascaded AI classifiers and coloured graph representations
Creators: name: Onofri, Elia
name: Corbetta, Alessandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Individual tracking of museum visitors based on portable radio beacons, an asset for behavioural analyses and comfort/performance improvements, is seeing increasing diffusion. Conceptually, this approach enables room-level localisation based on a network of small antennas (thus, without invasive modification of the existent structures). The antennas measure the intensity (RSSi) of self-advertising signals broadcasted by beacons individually assigned to the visitors. The signal intensity provides a proxy for the distance to the antennas and thus indicative positioning. However, RSSi signals are well-known to be noisy, even in ideal conditions (high antenna density, absence of obstacles, absence of crowd, ...). In this contribution, we present a method to perform accurate RSSi-based visitor tracking when the density of antennas is relatively low, e.g. due to technical constraints imposed by historic buildings. We combine an ensemble of "simple" localisers, trained based on ground-truth, with an encoding of the museum topology in terms of a total-coloured graph. This turns the localisation problem into a cascade process, from large to small scales, in space and in time. Our use case is visitors tracking in Galleria Borghese, Rome (Italy), for which our method manages >96% localisation accuracy, significantly improving on our previous work (J. Comput. Sci. 101357, 2021).
Zwischen Selbstreflexion und Projektion. Die Bilder von Ostjuden in zionistischen und orthodoxen deutsch-jüdischen Periodika während des Ersten Weltkriegs
Creators: name: Panter, Sarah
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2010

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 59 Nr. 1 (2010)
Nanoscale Non-Destructive Ferroelectric Characterization with Non-Contact Heterodyne Electrostrain Force Microscopy
Creators: name: Zeng, Qibin
name: Huang, Qicheng
name: Wang, Hongli
name: Li, Caiwen
name: Fan, Zhen
name: Chen, Deyang
name: Cheng, Yuan
name: Zeng, Kaiyang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Perceiving nanoscale ferroelectric phenomena from real space is of great importance for elucidating underlying ferroelectric physics. During the past decades, nanoscale ferroelectric characterization has mainly relied on the Piezoresponse Force Microscopy (PFM), however, the fundamental limitations of PFM have made the nanoscale ferroelectric studies encounter significant bottlenecks. In this study, a high-resolution non-contact ferroelectric measurement, named Non-Contact Heterodyne Electrostrain Force Microscopy (NC-HEsFM), has been introduced firstly. It has been unambiguously demonstrated that NC-HEsFM can operate on multiple eigenmodes to perform ideal high-resolution ferroelectric domain mapping, standard ferroelectric hysteresis loop measurement and controllable domain manipulation. With using quartz tuning fork (QTF) sensor and heterodyne detection, NC-HEsFM shows an unprecedented capability in achieving real non-contact yet non-destructive ferroelectric characterization with negligible electrostatic force effect. It is believed that NC-HEsFM can be extensively used in various ferroelectric or piezoelectric studies with providing substantially improved characterization performance. Meanwhile, the QTF-based force detection makes NC-HEsFM highly compatible for high-vacuum and low-temperature environments, providing ideal conditions for achieving an ultra-high spatial resolution to investigate the most intrinsic ferroelectric phenomena.
description: Main Text 30 pages, 5 figures; Supplemetary Materials:18 pages, 10 Figures and 1 Table
Polacy - Żydzi. Polen - Juden. Poles - Jews. 1939-1945. Wybór źródeł. Quellenauswahl
Creators: name: Friedrich, Klaus-Peter
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2002

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 51 Nr. 4 (2002)
Influence of the electron spill-out and nonlocality on gap-plasmons in the limit of vanishing gaps
Creators: name: Khalid, M.
name: Morandi, O.
name: Mallet, E.
name: Hervieux, P. A.
name: Manfredi, G.
name: Moreau, A.
name: Ciracì, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the effect of electron spill-out and of nonlocality on the propagation of light inside a gap between two semi-infinite metallic regions. We compare the predictions of a local response model taking into account only the spill-out, to the predictions of a quantum hydrodynamic model able to take both phenomena into account. We show that only the latter is able to correctly retrieve the correct limit when the gap closes, while the local model suffers from undesirable features (divergence of the fields, overestimation of the losses). Finally, we show that, to a certain extent, the correct results can be retrieved using a simple local approach without spill-out or conventional Thomas-Fermi approximation, but considering an effective gap width.
Master's thesis recital (collaborative piano)
Creators: name: Lin, Xiaoyi
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Sonatas (violin and piano)
Sonatas (Clarinet and piano)
Songs with piano
Saxopone and piano music

description: [Sonata for violin and piano in E minor, K. 304 / Wolfgang Amadeus Mozart -- Sonata for clarinet and piano, op. 120, no. 1 / Johannes Brahms -- Unidentified song for voice and piano -- Unidentified work for saxophone and piano]
Quasiclassical generalized Weierstrass representation and dispersionless DS equation
Creators: name: Konopelchenko, B. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Quasiclassical generalized Weierstrass representation (GWR) for highly corrugated surfaces with slow modulation in the four-dimensional Euclidean space is proposed. Integrable deformations of such surfaces are described by the dispersionless Davey-Stewartson hierarchy. Quasiclassical GWRs for other four-dimensional spaces and dispersionless DS system are discussed too.
description: 13 pages, talk given at the workshop "Solitons, collapses and turbulence",May 15-17, 2007, Chernogolovka, Russia
Andrzej Kamieński, Polska a Brandenburgia-Prusy w drugiej połowie XVII wieku. Dzieje polityczne
Creators: name: Bömelburg, Hans-Jürgen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2004

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 53 Nr. 1 (2004)
Study of Conservation and Wise Use of Two Important Indian Wetlands Using Contingent Valuation Technique
Creators: name: Roy, Malabika Biswas
name: Pal, Sujit
name: Mihir Pal
name: Roy, Pankaj Kumar
name: Abhishek Kumar
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2019
Subjects: Ramsar Wetland
Conservation
Management
Rural Wetland
WTP

description: EnvironmentAsia, 12, 2, 172-178
The synthesis and characterization of some molybdenum, rhenium and rhodium complexes incorporating pyrazolylgallate ligands
Creators: name: Cooper, David Arthur
Publisher: name: University of British Columbia
Year: 2010

description: Several uninegative ligands based on a gallium core and incorporating pyrazolyl groups have been synthesized and their metathesis reactions with molybdenum, rhenium and rhodium halides have been studied. The bidentate pyrazolylgallate ligand [formula omitted] has been incorporated in the complexes [formula omitted]. The unsymmetric tridentate pyrazolylgallate ligands [formula omitted] display a variable reactivity towards molybdenum, rhenium and rhodium precursors. Although no complexes incorporating L⁴ were isolated, L₂ and L₃ were shown to co-ordinate facially in the octahedral complexes [formula omitted] and [formula omitted]. In addition, a meridional co-ordination geometry of L₂ has been structurally characterized in the square planar rhodium(I) complex, L₂Rh(CO). This co-ordinatively unsaturated rhodium(I) species was shown to undergo an interesting oxidative addition reaction with methyl iodide followed by a methyl migration reaction to give a rhodium(III) acetyl derivative. Less predictable products have also been obtained in this study; these include the dimeric species [formula omitted] formed from the reaction of NaL₃ with [formula omitted] and also an unexpected chlorine-containing complex, [formula omitted] from the reaction of [formula omitted]. [formula omitted] the product of the reaction between [formula omitted]. [Formula omitted] (the precursor of Ld) has been structurally shown to possess a novel eight-membered Ga-(N-C-S)₂-Ga ring.
Technische Ondersteuning Van Hotmail - Beheer Uw E-Mail Op De Beste Manier
Creators: name: Rinkimia
Publisher: name: Zenodo
Year: 2022
Subjects: hotmail
Hotmail Nummer
Hotmail telefoonnummer
Hotmail helpdesk nederland

description: Miljoenen gebruikers over de hele wereld vertrouwen op de hotmail-webservice om informatie in de vorm van e-mail naar verschillende delen van de wereld te communiceren. Gelanceerd door Microsoft, bood het een groot aantal functies met één klik. Outlook.com wordt ook gebruikt in synchronisatie met de hotmail, meestal voor officiële doeleinden. Met geavanceerde functies en gemakkelijke toegankelijkheid wordt hotmail favoriet voor velen. Maar soms kunnen gebruikers merken dat hun e-mail niet goed werkt of dat ze vastlopen bij het gebruik van de ene of de andere functie. Hotmail Klantenservice Nederland is in staat om alle soorten fouten op te lossen die te maken hebben met het niet goed functioneren van uw e-mail. Ze helpen ook bij het verwijderen van alle soorten virusinfecties van uw computer die de goede werking van uw e-mail belemmeren. U kunt contact opnemen met het ondersteuningsteam via livechat, voicemail, messenger of hulplijnnummer waarmee u met een van de technische experts kunt spreken. Het ondersteuningsteam bestaat uit zeer gefocuste, getrainde en bekwame experts die een effectieve en complete oplossing bieden voor alle e-mailgerelateerde problemen. Of uw e-mail nu is gehackt of wordt geblokkeerd, experts staan klaar om u zo snel mogelijk uit de problemen te helpen. Enkele van de problemen met betrekking tot uw e-mail zijn: Wachtwoord vergeten Ontvangen van e-mails over mislukte leveringsstatus Kan geen e-mails verzenden/ontvangen Er vinden schadelijke activiteiten plaats in uw account Te veel spammails. Documenten kunnen niet worden toegevoegd en gedownload. Probleem met taalinstelling. E-mail werkt niet op andere apparaten zoals mobiel, tablet. Kan geen nieuwe e-mails maken Ransomware die uw account infecteert. Webpagina opent niet. E-mail zit vast U kunt uw e-mailwachtwoord niet opnieuw instellen. Algemene probleemoplossing en vele andere. Het enige wat u hoeft te doen is ons te Hotmail bellen op het hulplijnnummer of online hulp te krijgen via webchat. Het is zeker dat gebruikers onmiddellijk hulp zullen krijgen om hun e-mail op de beste manier te beheren.
Multi-mode bosonic Gaussian channels
Creators: name: Caruso, F.
name: Eisert, J.
name: Giovannetti, V.
name: Holevo, A. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A complete analysis of multi-mode bosonic Gaussian channels is proposed. We clarify the structure of unitary dilations of general Gaussian channels involving any number of bosonic modes and present a normal form. The maximum number of auxiliary modes that is needed is identified, including all rank deficient cases, and the specific role of additive classical noise is highlighted. By using this analysis, we derive a canonical matrix form of the noisy evolution of n-mode bosonic Gaussian channels and of their weak complementary counterparts, based on a recent generalization of the normal mode decomposition for non-symmetric or locality constrained situations. It allows us to simplify the weak-degradability classification. Moreover, we investigate the structure of some singular multi-mode channels, like the additive classical noise channel that can be used to decompose a noisy channel in terms of a less noisy one in order to find new sets of maps with zero quantum capacity. Finally, the two-mode case is analyzed in detail. By exploiting the composition rules of two-mode maps and the fact that anti-degradable channels cannot be used to transfer quantum information, we identify sets of two-mode bosonic channels with zero capacity.
description: 37 pages, 3 figures (minor editing), accepted for publication in New Journal of Physics
Event Weighted Tests for Detecting Periodicity in Photon Arrival Times
Creators: name: Bickel, Peter
name: Kleijn, Bas
name: Rice, John
Publisher: name: arXiv
Year: 2007
Subjects: subject: Methodology (stat.ME)
subject: Astrophysics (astro-ph)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: This paper treats the problem of detecting periodicity in a sequence of photon arrival times, which occurs, for example, in attempting to detect gamma-ray pulsars. A particular focus is on how auxiliary information, typically source intensity, background intensity, and incidence angles and energies associated with each photon arrival should be used to maximize the detection power. We construct a class of likelihood-based tests, score tests, which give rise to event weighting in a principled and natural way, and derive expressions quantifying the power of the tests. These results can be used to compare the efficacies of different weight functions, including cuts in energy and incidence angle. The test is targeted toward a template for the periodic lightcurve, and we quantify how deviation from that template affects the power of detection.
„Bei uns werden die Menschen nicht nach ihren Verdiensten beurteilt ...“. Erster Weltkrieg und Staatsgründung in der Gedächtniskultur einer zentralpolnischen Provinz 1918-1939: Die Region Lublin als Beispiel
Creators: name: Henschel, Christhardt
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2010

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 59 Nr. 1 (2010)
Polarization properties of FRB 20201124A from detections with the 100-m Effelsberg Radio Telescope
Creators: name: Hilmarsson, G. H.
name: Spitler, L. G.
name: Main, R. A.
name: Li, D. Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The repeating FRB source, FRB 20201124A, was found to be highly active in March and April 2021. We observed the source with the Effelsberg 100-m radio telescope at 1.36 GHz on 9 April 2021 and detected 20 bursts. A downward drift in frequency over time is clearly seen from the majority of bursts in our sample. A structure-maximizing dispersion measure (DM) search on the multi-component bursts in our sample yields a DM of 411.6$\pm$0.6 pc/cm$^3$. We find that the rotation measure (RM) of the bursts varies around their mean value of -605 rad/m$^2$ with a standard deviation of 11.1 rad/m$^2$. This RM magnitude is 10 times larger than the expected Galactic contribution along this line of sight (LoS). We estimate a LoS magnetic field strength of 4--6 $μ$G, assuming that the entire host galaxy DM contributes to the RM. Further polarization measurements will help determine FRB 20201124A's RM stability. The bursts are highly linearly polarized, with some showing signs of circular polarization, the first for a repeating FRB. Their polarization position angles (PAs) are flat across the burst envelopes and vary between bursts. We argue that the varying polarization fractions and PAs of FRB 20201124A are similar to known magnetospheric emission from pulsars, while the observed circular polarization, combined with the RM variability, is hard to explain with Faraday conversion. The high linear polarization fractions, flat PAs, and downward drift from FRB 20201124A bursts are similar to previous repeating sources, while the observed circular polarization is a newly seen behaviour among repeaters.
description: Accepted version. 8 pages, 5 figures
PISA as an ideational roadmap for policy change: exploring Germany and England in a comparative perspective
Creators: name: Martens, Kerstin
name: Knodel, Philipp
name: Niemann, Dennis
Publisher: name: Taylor & Francis
Year: 2013
Subjects: subject: Germany
subject: England
subject: education policy
subject: PISA
subject: international organisations
subject: soft governance
subject: OECD
subject: 320

description: Education policy has undergone transformation in many countries over the last decade. In this article, we focus on the effects of the most significant international initiative in secondary education, which is the Organisation for Economic Co-operation and Development’s (OECD) Programme for International Student Assessment (PISA). We analyse two countries that provide variation regarding the degree of change in their respective education policy-making due to this study; while Germany substantially reformed its education system in reaction to its mediocre PISA results, almost no change has been observed in England. As we show, alterations and shifts in ideas of education policy best account for such a change.
Heidi Hein, Der Piłsudski-Kult und seine Bedeutung für den polnischen Staat 1926-1939
Creators: name: Kraft, Claudia
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2002

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 51 Nr. 4 (2002)
Christoph Augustynowicz, Die Kandidaten und Interessen des Hauses Habsburg in Polen-Litauen während des Zweiten Interregnums 1574-1576.
Creators: name: Heyde, Jürgen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 3 (2003)
Jan Rydel, Die polnische Besatzung im Emsland 1945-1948
Creators: name: Haubold, Juliane
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2004

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 53 Nr. 1 (2004)
Siegfried Tornow, Was ist Osteuropa? Handbuch der osteuropäischen Text- und Sozialgeschichte von der Spätantike bis zum Nationalstaat
Creators: name: Wünsch, Thomas
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2005

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 54 Nr. 4 (2005)
Sigismund I. und der Oberlausitzer Sechsstädtebund in den Hussitenkriegen (1419-1437)
Creators: name: Metzig, Gregor M.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2010

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 59 Nr. 1 (2010)
Dariusz Sikorski, Przywilej kruszwicki. Studium z wczesnych dziejów zakonu niemieckiego w Prusach
Creators: name: Beuttel, Jan-Erik
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 1 (2003)
Solving the Inverse Problem with Inhomogeneous Universes
Creators: name: Yoo, Chul-Moon
name: Kai, Tomohiro
name: Nakao, Ken-ichi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct the Lemaître-Tolman-Bondi (LTB) dust universe whose distance-redshift relation is equivalent to that in the concordance $Λ$ cold dark matter ($Λ$CDM) cosmological model. In our model, the density distribution and velocity field are not homogeneous, whereas the big-bang time is uniform, which implies that the universe is homogeneous at its beginning. We also study the effects of local clumpiness in the density distribution as well as the effects of large-scale inhomogeneities on the distance-redshift relation, and show that these effects may reduce the amplitude of large-scale inhomogeneities necessary for having a distance-redshift relation that is the same as that of the concordance $Λ$CDM universe. We also study the temporal variation of the cosmological redshift and show that, by the observation of this quantity, we can distinguish our LTB universe model from the concordance $Λ$CDM model, even if their redshift-distance relations are equivalent to each other.
description: 28 pages,12 figures,PTP accepted version,typo corrected
Wrapped Magnetized Branes: Two Alternative Descriptions?
Creators: name: Di Vecchia, P.
name: Liccardo, A.
name: Marotta, R.
name: Pesando, I.
name: Pezzella, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss two inequivalent ways for describing magnetized D-branes wrapped N times on a torus T^2. The first one is based on a non-abelian gauge bundle U(N), while the second one is obtained by means of a Narain T-duality transformation acting on a theory with non-magnetized branes. We construct in both descriptions the boundary state and the open string vertices and show that they give rise to different string amplitudes. In particular, the description based on the gauge bundle has open string vertex operators with momentum dependent Chan-Paton factors.
description: 60 pages, LaTeX
Application of NMR to study biological change
Creators: name: Lee, Jonathan Wai Kua
Publisher: name: University of British Columbia
Year: 2010

description: The aim of this study was directed towards the application of NMR as an analytical tool to follow biological changes, by integrating imaging capabilities with an analytical NMR instrument. The work described here is divided into three parts: application of ¹³C NMR to follow biochemical transformations, evaluation of the usefulness of relaxation studies in detection of biological changes and, finally, testing of a combination of both NMR imaging and spectroscopic techniques to study a selected model system. Spectroscopic techniques were used to study systems of interest not only to chemists but also to technologists interested in milk-souring, grape-juice fermentation, soybean germination and cartilage-degradation. Our immediate objective was to identify biological changes and to fit them into known biochemical pathways; in the long term, this would lay down the ground work for future in-vivo studies. Relaxation techniques were used to obtain biological information and to follow biochemical changes. Initial studies involved cultured cells and their NMR relaxation rates were shown to be dependent on factors affecting cellular activities, such as growth and infection. Animal models of Arthritis and Multiple Sclerosis were followed by relaxation rates with moderate success. Finally, a preliminary study is described, in which a combination of spectroscopic and imaging techniques was used to follow the storage and cooking of an egg.
Christian Handschuh, Georg Smolka. Von der 'Ostforschung' zum 'Abendland'
Creators: name: Mühle, Eduard
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2004

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 53 Nr. 1 (2004)
Kirche und Nation im 19. Jahrhundert. Ein Forschungsbericht unter besonderer Berücksichtigung des preußischen Ostens
Creators: name: Schattkowsky, Ralph
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2005

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 54 Nr. 4 (2005)
Structure of AlSb(001) and GaSb(001) Surfaces Under Extreme Sb-rich Conditions
Creators: name: Houze, Jeffery
name: Kim, Sungho
name: Kim, Seong-Gon
name: Erwin, S. C.
name: Whitman, L. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We use density-functional theory to study the structure of AlSb(001) and GaSb(001) surfaces. Based on a variety of reconstruction models, we construct surface stability diagrams for AlSb and GaSb under different growth conditions. For AlSb(001), the predictions are in excellent agreement with experimentally observed reconstructions. For GaSb(001), we show that previously proposed model accounts for the experimentally observed reconstructions under Ga-rich growth conditions, but fails to explain the experimental observations under Sb-rich conditions. We propose a new model that has a substantially lower surface energy than all (nx5)-like reconstructions proposed previously and that, in addition, leads to a simulated STM image in better agreement with experiment than existing models. However, this new model has higher surface energy than some of (4x3)-like reconstructions, models with periodicity that has not been observed. Hence we conclude that the experimentally observed (1x5) and (2x5) structures on GaSb(001) are kinetically limited rather than at the ground state.
description: 6 pages, 6 figures
Remarks on Superstring amplitudes in higher genus
Creators: name: Manni, Riccardo Salvati
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Very recently, Grushevsky continued D'Hoker and Phong's program of finding the chiral superstring measure from first principles by constructing modular forms satisfying certain factorization constraints. He has proposed an ansatz in genus 4 and conjectured a possible formula for the superstring measure in any genus, subject to the condition that certain modular forms admit holomorphic roots. In this note we want to give some evidence that Grushevsky's approach seems to be very fruitful.
description: 14 pages. New version. I correct misprints and some expressions
Generic behaviours in impact fragmentation
Creators: name: Sator, N.
name: Mechkov, S.
name: Sausset, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a simple numerical model for investigating the general properties of fragmentation. By use of molecular dynamics simulations, we study the impact fragmentation of a solid disk of interacting particles with a wall. Regardless of the particular form of the interaction potential, the fragment size distribution exhibits a power law behaviour with an exponent that increases logarithmically with the energy deposited in the system, in agreement with experiments. We expect this behaviour to be generic in fragmentation phenomena.
description: Text changed, 12 pages, 5 figures
Two-point functions with an invariant Planck scale and thermal effects
Creators: name: Agullo, Ivan
name: Navarro-Salas, Jose
name: Olmo, Gonzalo J.
name: Parker, Leonard
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Nonlinear deformations of relativistic symmetries at the Planck scale are usually addressed in terms of modified dispersion relations. We explore here an alternative route by directly deforming the two-point functions of an underlying field theory. The proposed deformations depend on a length parameter (Planck length) and preserve the basic symmetries of the corresponding theory. We also study the physical consequences implied by these modifications at the Planck scale by analyzing the response function of an accelerated detector in Minkowski space, an inertial one in de Sitter space, and also in a black hole spacetime.
description: 12 pages, no figures
Piotr Osęka, Rytuały stalinizmu: Oficjalne święta i uroczystości rocznicowe w Polsce, 1944-1956
Creators: name: Behrends, Jan C.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2009

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 58 Nr. 4 (2009)
Pulsating hydrogen-deficient white dwarfs and pre-white dwarfs observed with TESS II. Discovery of two new GW Vir stars: TIC333432673 and TIC095332541
Creators: name: Uzundag, Murat
name: Córsico, Alejandro H.
name: Kepler, S. O.
name: Althaus, Leandro G.
name: Werner, Klaus
name: Reindl, Nicole
name: Bell, Keaton J.
name: Higgins, Michael
name: da Rosa, Gabriela O.
name: Vučković, Maja
name: Istrate, Alina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this paper, we present the observations of two new GW Vir stars from the extended \textit{TESS} mission in both 120\,s short-cadence and 20\,s ultra-short-cadence mode of two pre-white dwarf stars showing hydrogen deficiency. We performed an asteroseismological analysis of these stars on the basis of PG~1159 evolutionary models that take into account the complete evolution of the progenitor stars. We searched for patterns of uniform period spacings in order to constrain the stellar mass of the stars, and employed the individual observed periods to search for a representative seismological model. The analysis of the {\it TESS} light curves of TIC\,333432673 and TIC\,095332541 reveals the presence of several oscillations with periods ranging from 350 to 500~s associated to typical gravity ($g$)-modes. From follow-up ground-based spectroscopy, we find that both stars have similar effective temperature ($T_\mathrm{eff} = 120,000 \pm 10,000$\,K) and surface gravity ($\log g = 7.5 \pm 0.5$) but a different He/C composition. On the basis of PG~1159 evolutionary tracks, we derived a spectroscopic mass of $M_{\star}$ = $0.58^{+0.16}_{-0.08}\,M_{\odot}$ for both stars. Our asteroseismological analysis of TIC\,333432673 allowed us to find a constant period spacing compatible with a stellar mass $M_{\star}\sim 0.60-0.61\,M_{\odot}$, and an asteroseismological model for this star with a stellar mass $M_{\star}$ = $0.589\pm 0.020$ $M_{\odot}$, and a seismological distance of $d= 459^{+188}_{-156}$ pc. For this star, we find an excellent agreement between the different methods to infer the stellar mass, and also between the seismological distance and that measured with {\it Gaia} ($d_{\rm Gaia}= 389^{+5.6}_{-5.2}$ pc). For TIC\,095332541, we have found a possible period spacing that suggests a stellar mass of $M_{\star}\sim 0.55-0.57\,M_{\odot}$.
description: 12 pages, 13 figures, Accepted for publication in A&A. arXiv admin note: text overlap with arXiv:2011.03629
Universal description of the rotational-vibrational spectrum of three particles with zero-range interactions
Creators: name: Kartavtsev, O. I.
name: Malykh, A. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A comprehensive universal description of the rotational-vibrational spectrum for two identical particles of mass $m$ and the third particle of the mass $m_1$ in the zero-range limit of the interaction between different particles is given for arbitrary values of the mass ratio $m/m_1$ and the total angular momentum $L$. If the two-body scattering length is positive, a number of vibrational states is finite for $L_c(m/m_1) \le L \le L_b(m/m_1)$, zero for $L>L_b(m/m_1)$, and infinite for $L 2$ and only slightly deviates from those for $L = 1, 2$. The universal description implies that the critical values $L_c(m/m_1)$ and $L_b(m/m_1)$ increase as $0.401 \sqrt{m/m_1}$ and $0.563 \sqrt{m/m_1}$, respectively, while a number of vibrational states for $L \ge L_c(m/m_1)$ is within the range $N \le N_{max} \approx 1.1 \sqrt{L(L+1)}+1/2$.
Particle Acceleration at Interplanetary Shocks
Creators: name: Baring, Matthew G.
name: Summerlin, Errol J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The acceleration of interstellar pick-up ions as well as solar wind species has been observed at a multitude of interplanetary (IP) shocks by different spacecraft. This paper expands upon previous work modeling the phase space distributions of accelerated ions associated with the shock event encountered on day 292 of 1991 by the Ulysses mission at 4.5 AU. A kinetic Monte Carlo simulation is employed here to model the diffusive acceleration process. This exposition presents recent developments pertaining to the incorporation into the simulation of the diffusive characteristics incurred by field line wandering (FLW), according to the work of Giacalone and Jokipii. For a pure field-line wandering construct, it is determined that the upstream spatial ramp scales are too short to accommodate the HI-SCALE flux increases for 200 keV protons, and that the distribution function for H+ somewhat underpopulates the combined SWICS/HI-SCALE spectra at the shock. This contrasts our earlier theory/data comparison where it was demonstrated that diffusive transport in highly turbulent fields according to kinetic theory can successfully account for both the proton distributions and upstream ramp scales, using a single turbulence parameter. The principal conclusion here is that, in a FLW scenario, the transport of ions across the mean magnetic field is slightly less efficient than is required to effectively trap energetic ions within a few Larmor radii of the shock layer and thereby precipitate efficient acceleration. This highlights the contrast between ion transport in highly turbulent shock environs and remote, less-disturbed interplanetary regions.
description: 6 pages, 1 embedded figure, to appear in Proc. of the 7th IGPP International Astrophysics Conference "Particle Acceleration and Transport in the Heliosphere and Beyond" (2008), eds. G. Li, et al. (AIP Conf. Proc., New York)
Probabilistic Visual Place Recognition for Hierarchical Localization
Creators: name: Xu, Ming
name: Sünderhauf, Niko
name: Milford, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Visual localization techniques often comprise a hierarchical localization pipeline, with a visual place recognition module used as a coarse localizer to initialize a pose refinement stage. While improving the pose refinement step has been the focus of much recent research, most work on the coarse localization stage has focused on improvements like increased invariance to appearance change, without improving what can be loose error tolerances. In this letter, we propose two methods which adapt image retrieval techniques used for visual place recognition to the Bayesian state estimation formulation for localization. We demonstrate significant improvements to the localization accuracy of the coarse localization stage using our methods, whilst retaining state-of-the-art performance under severe appearance change. Using extensive experimentation on the Oxford RobotCar dataset, results show that our approach outperforms comparable state-of-the-art methods in terms of precision-recall performance for localizing image sequences. In addition, our proposed methods provides the flexibility to contextually scale localization latency in order to achieve these improvements. The improved initial localization estimate opens up the possibility of both improved overall localization performance and modified pose refinement techniques that leverage this improved spatial prior.
description: 8 pages, 4 figures, RA-L standalone
Implementing spectra response function approaches for fast calculation of power spectra and bispectra
Creators: name: Osato, Ken
name: Nishimichi, Takahiro
name: Taruya, Atsushi
name: Bernardeau, Francis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Perturbation theory of large-scale structures of the Universe at next-to-leading order and next-to-next-to-leading order provides us with predictions of cosmological statistics at sub-percent level in the mildly non-linear regime. Its use to infer cosmological parameters from spectroscopic surveys, however, is hampered by the computational cost of making predictions for a large number of parameters. In order to reduce the running time of the codes, we present a fast scheme in the context of the regularized perturbation theory approach and applied it to power spectra at 2-loop level and bispectra at 1-loop level, including the impact of binning. This method utilizes a Taylor expansion of the power spectrum as a functional of the linear power spectrum around fiducial points at which costly direct evaluation of perturbative diagrams is performed and tabulated. The computation of the predicted spectra for arbitrary cosmological parameters then requires only one-dimensional integrals that can be done within a few minutes. It makes this method suitable for Markov chain Monte-Carlo analyses for cosmological parameter inference.
description: 32 pages, 21 figures, PRD in press
The Ionization of Accretion Flows in High Mass Star Formation: W51e2
Creators: name: Keto, Eric
name: Klaassen, Pamela
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Previous observations show that the hypercompact HII region W51e2 is surrounded by a massive molecular accretion flow centered on the HII region. New observations of the H53alpha radio recombination line made with the VLA at 0.45 arc second angular resolution show a velocity gradient in the ionized gas within the HII region of > 500 kms-1 pc-1 comparable to the velocity gradient seen in the molecular accretion flow. New CO line observations made with the SMA at arc second angular resolution detect a molecular bipolar outflow immediately around the W51e2 HII region and extending along the axis of rotation of the molecular flow. These observations are consistent with an evolutionary phase for high mass star formation in which a newly formed massive star first begins to ionize its surroundings including its own accretion flow.
description: ApJ Letters in press
Superconducting Microstrip Losses at Microwave and Sub-millimeter wavelengths
Creators: name: Hähnle, S.
name: Kouwenhoven, K.
name: Buijtendorp, B.
name: Endo, A.
name: Karatsu, K.
name: Thoen, D. J.
name: Murugesan, V.
name: Baselmans, J. J. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We present a lab-on-chip experiment to accurately measure losses of superconducting microstrip lines at microwave and sub-mm wavelengths. The microstrips are fabricated from NbTiN, which is deposited using reactive magnetron sputtering, and amorphous silicon which is deposited using plasma-enhanced chemical vapor deposition (PECVD). Sub-mm wave losses are measured using on-chip Fabry-P{é}rot resonators (FPR) operating around $350\ $GHz. Microwave losses are measured using shunted half-wave resonators with an identical geometry and fabricated on the same chip. We measure a loss tangent of the amorphous silicon at single-photon energies of $\tanδ=3.7\pm0.5\times10^{-5}$ at $6\ $GHz and $\tanδ= 2.1\pm 0.1\times10^{-4}$ at $350\ $GHz. These results represent very low losses for deposited dielectrics, but the sub-mm wave losses are significantly higher than the microwave losses, which cannot be understood using the standard two-level system loss model.
description: 8 pages, 3 figures
Effect of a single impurity on the local density of states in monolayer and bilayer graphene
Creators: name: Bena, Cristina
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We use the T-matrix approximation to analyze the effect of a localized impurity on the local density of states in mono- and bilayer graphene. For monolayer graphene the Friedel oscillations generated by intranodal scattering obey an inverse-square law, while the internodal ones obey an inverse law. In the Fourier transform this translates into a filled circle of high intensity in the center of the Brillouin zone, and empty circular contours around its corners. For bilayer graphene both types of oscillations obey an inverse law.
description: 8 pages, 3 figures, version accepted for publication
Hollow-tree Super: a directional and scalable approach for feature importance in boosted tree models
Creators: name: Doyen, Stephane
name: Taylor, Hugh
name: Nicholas, Peter
name: Crawford, Lewis
name: Young, Isabella
name: Sughrue, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62-08

description: Current limitations in boosted tree modelling prevent the effective scaling to datasets with a large feature number, particularly when investigating the magnitude and directionality of various features on classification. We present a novel methodology, Hollow-tree Super (HOTS), to resolve and visualize feature importance in boosted tree models involving a large number of features. Further, HOTS allows for investigation of the directionality and magnitude various features have on classification. Using the Iris dataset, we first compare HOTS to Gini Importance, Partial Dependence Plots, and Permutation Importance, and demonstrate how HOTS resolves the weaknesses present in these methods. We then show how HOTS can be utilized in high dimensional neuroscientific data, by taking 60 Schizophrenic subjects and applying the method to determine which brain regions were most important for classification of schizophrenia as determined by the PANSS. HOTS effectively replicated and supported the findings of Gini importance, Partial Dependence Plots and Permutation importance within the Iris dataset. When applied to the schizophrenic brain dataset, HOTS was able to resolve the top 10 most important features for classification, as well as their directionality for classification and magnitude compared to other features. Cross-validation supported that these same 10 features were consistently used in the decision-making process across multiple trees, and these features were localised primarily to the occipital and parietal cortices, commonly disturbed brain regions in those with Schizophrenia. It is imperative that a methodology is developed that is able to handle the demands of working with large datasets that contain a large number of features. HOTS represents a unique way to investigate both the directionality and magnitude of feature importance when working at scale with boosted-tree modelling.
description: 28 pages, 1 table, 7 figures, PDF format - Submitted to PLOSONE pending review
Spectrophotometric properties of pre-main sequence stars: the Epsilon Chamaeleontis cluster
Creators: name: Lyo, A-Ran
name: Lawson, Warrick A.
name: Bessell, M. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a study of flux-calibrated low-resolution optical spectroscopy of ten stars belonging to eight systems in the ~ 5 Myr-old Epsilon Chamaeleontis (Eps Cha) pre-main-sequence (PMS) star cluster. Using synthetic broadband colours, narrow-band continuum, atomic and molecular lines derived from the spectra, we compare the Eps Cha stars to a slightly older PMS cluster, the ~ 8 Myr-old Eta Cha cluster, and to main-sequence dwarfs. Using synthetic VRI colours and other indices, we find that the relationship between broadband colours and spectroscopic temperature indicators for Eps Cha cluster members is indistinguishable from that of Gyr-old dwarfs. This result is identical to that found earlier in Eta Cha. Gravity-sensitive line indices place the cluster between the giant and dwarf sequences, and there is clear evidence that Eps Cha stars have lower surface gravity than Eta Cha stars. This result is consistent with Eps Cha being the slightly younger PMS association, a few Myr younger according to the Hertzsprung-Russell (HR) diagram placement of these two clusters and comparison with PMS evolutionary grids. Late M-type Eps Cha cluster members show a B-band flux excess of ~ 0.2 mag compared to observations of standard dwarfs, which might be related to enhanced magnetic activity. A similar level of excess B-band emission appears to be a ubiquitous feature of low mass members of young stellar populations with ages less than a few hundred Myr, a very similar timescale to the PMS phase of elevated relative X-ray luminosity.
description: 8 figures and 3 tables It accepted for publication in Monthly Notices of the Royal Astronomical Society