cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Efficient Spin-Orbit Torque Generation in Semiconducting WTe2 with Hopping Transport
Creators: name: Peng, Cheng-Wei
name: Liao, Wei-Bang
name: Chen, Tian-Yue
name: Pai, Chi-Feng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin-orbit torques (SOTs) from transition metal dichalcogenides systems (TMDs) in conjunction with ferromagnetic materials are recently attractive in spintronics for their versatile features. However, most of the previously studied crystalline TMDs are prepared by mechanical exfoliation, which limits their potentials for industrial applications. Here we show that amorphous WTe2 heterostructures deposited by magnetron sputtering possess a sizable damping-like SOT efficiency ξ_DL^WTe2 ~ 0.20 and low damping constant α = 0.009/pm0.001. Only an extremely low critical switching current density J_c ~ 7.05\times10^9 A/m^2 is required to achieve SOT-driven magnetization switching. The SOT efficiency is further proved to depend on the W and Te relative compositions in the co-sputtered W_100-xTe_x samples, from which a sign change of ξ_DL^WTe2 is observed. Besides, the electronic transport in amorphous WTe2 is found to be semiconducting and is governed by a hopping mechanism. With the above advantages and rich tunability, amorphous and semiconducting WTe2 serves as a unique SOT source for future spintronics applications.
title: Rezension: "Das Konzentrationslager und Zuchthaus Sonnenburg" / Hans Coppi, Kamil Majchrzak (Hrsg.). Berlin: Metropol-Verlag, 2014. ISBN: 978-3-86331-227-5
Creators: name: Woniak, Katarzyna
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: Die deutsche Historiographie verfügt über zahlreiche Studien zu Konzentrationslagern. Gut erforscht sind sowohl das Gesamtsystem der NS-Lager als auch die einzelnen KZ. Betrachtet man die Monographien zu einzelnen Lagern, so richtet sich der wissenschaftliche Blick auf die größten Verfolgungs- und Tötungsstätten, wie z.B. auf Dachau, Sachsenhausen und Auschwitz. Schrittweise wurde diese Perspektive auf die Erforschung der KZ-Außenlager erweitert. Die Fokussierung der Forscher auf die Konzentrationslager führte dazu, dass eine ganze Reihe von anderen Orten des NS-Terrors fast unberücksichtigt blieb. Durch die mangelnde Forschung, aber auch wegen des geringen öffentlichen Interesses, verwandelten sich diese Orte in „vergessene Orte". Heutzutage wissen wir m.E. viel zu wenig über die Arbeitserziehungslager, Zwangsarbeiterlager, Straflager, Gefängnisse und Zuchthäuser. Das KZ und Zuchthaus Sonnenburg gehörte zweifelsohne zu diesen „vergessenen Orten". Nur dank mehrerer zivilgesellschaftlicher Initiativen, die in den letzten Jahren in transnationaler Zusammenarbeit erfolgten, konnte die Geschichte von Sonnenburg wieder ans Licht gebracht werden. Das Buch von Hans Coppi (Historiker) und Kamil Majchrzak (Jurist) „Das Konzentrationslager und Zuchthaus Sonnenburg" aus dem Jahre 2015 geht auf eine dieser Initiativen „von unten" zurück und erörtert mehrere bisher unerforschte Aspekte dieses Ortes.
Excitons in QED3 and spin response in a phase-fluctuating d-wave superconductor
Creators: name: Seradjeh, Babak H.
name: Herbut, Igor F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the particle-hole exciton mode in the QED3 theory of a phase-fluctuating d-wave superconductor in ladder approximation. We derive a Schroedinger-like equation for the exciton bound state and determine the conditions for its existence. We find the dispersion of this mode below the particle-hole continuum and compare our results with the resonance observed in neutron scattering measurements in cuprates.
description: 8 pages, 3 .eps fugures, RevTeX4; v2: Brief literature review added, references updated and a few typos corrected. Published version in PRB
title: Rezension: "Breslau – Geschichte einer europäischen Metropole" / Eduard Mühle. Köln, Weimar, Wien: Böhlau, 2015. ISBN: 978-3-412-50137-2
Creators: name: Höhenleitner, Lisa
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: Eduard Mühle brachte 2015 eine umfassende Biografie der Stadt Breslaus heraus. Er verfasste seine Darstellung der tausendjährigen Breslauer Geschichte strukturiert und klar. In jedem der zehn Kapitel (mit Ausnahme des letzten) werden ein Gebäude aus historischer und architektur-geschichtlicher Perspektive sowie die Biographie einer Person als "Repräsentanten" für die jeweilige Zeit vorgestellt, charakterisiert und in die Gegebenheiten der Epoche eingebettet. Mit diesem gelungenen Stilmittel stellt Mühle die Entwicklungen in der Stadt Breslau bis zum heutigen Jahrzehnt dar, wobei er den Anspruch auf Vollständigkeit schon im Vorwort entkräftet.
Monitoring the Impact of Wildfires on Tree Species with Deep Learning
Creators: name: Zhou, Wang
name: Klein, Levente
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: One of the impacts of climate change is the difficulty of tree regrowth after wildfires over areas that traditionally were covered by certain tree species. Here a deep learning model is customized to classify land covers from four-band aerial imagery before and after wildfires to study the prolonged consequences of wildfires on tree species. The tree species labels are generated from manually delineated maps for five land cover classes: Conifer, Hardwood, Shrub, ReforestedTree and Barren land. With an accuracy of $92\%$ on the test split, the model is applied to three wildfires on data from 2009 to 2018. The model accurately delineates areas damaged by wildfires, changes in tree species and rebound of burned areas. The result shows clear evidence of wildfires impacting the local ecosystem and the outlined approach can help monitor reforested areas, observe changes in forest composition and track wildfire impact on tree species.
Cerenkov Radiation in a Lorentz-Violating and Birefringent Vacuum
Creators: name: Altschul, Brett
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the emission spectrum for vacuum Cerenkov radiation in Lorentz-violating extensions of electrodynamics. We develop an approach that works equally well if the presence or the absence of birefringence. In addition to confirming earlier work, we present the first calculation relevant to Cerenkov radiation in the presence of a birefringent photon k_F term, calculating the lower-energy part of the spectrum for that case.
description: 17 pages, version to appear in Phys. Rev. D
title: Review: "(A)pollonia: Twenty-First Century Polish Drama and Texts for the Stage" / Krystyna Duniec, Joanna Klass, Joanna Krakowska (ed.). Chicago: Seagull Books - In Performance, 2015. ISBN: 978-0857421784
Creators: name: Vickers, Paul
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: This substantial anthology of eleven twenty-first-century Polish dramas and texts for the stage in excellent English translation emerged from transatlantic collaboration between Polish writers, translators, theatre experts and practitioners. Nine of the fine, flowing translations are by Artur Zapałowski, who deserves star billing rather than being listed equally prominently in the cast of translators alongside Benjamin Paloff (translator of Magda Fertacz's Trash Story) and Wojciech Ziemilski, who interpreted his own one-man performance Small Narration. Joanna Klass' preface and the introduction by Polish academics Joanna Krakowska and Krystyna Duniec offer largely insightful contextualization of the diverse yet balanced selection of works. A 45-minute DVD contains excerpts from Polish productions of five works.
Links Between Heavy Ion and Astrophysics
Creators: name: Horowitz, C. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Heavy ion experiments provide important data to test astrophysical models. The high density equation of state can be probed in HI collisions and applied to the hot protoneutron star formed in core collapse supernovae. The Parity Radius Experiment (PREX) aims to accurately measure the neutron radius of $^{208}$Pb with parity violating electron scattering. This determines the pressure of neutron rich matter and the density dependence of the symmetry energy. Competition between nuclear attraction and coulomb repulsion can form exotic shapes called nuclear pasta in neutron star crusts and supernovae. This competition can be probed with multifragmentation HI reactions. We use large scale semiclassical simulations to study nonuniform neutron rich matter in supernovae. We find that the coulomb interactions in astrophysical systems suppress density fluctuations. As a result, there is no first order liquid vapor phase transition. Finally, the virial expansion for low density matter shows that the nuclear vapor phase is complex with significant concentrations of alpha particles and other light nuclei in addition to free nucleons.
description: 8 pages, 6 figures. To be published in "Dynamics and Thermodynamics with Nucleon Degrees of Freedom", eds. P. Chomaz, F. Gulminelli, J. Natowitz, and S. Yennello, http://cyclotron.tamu.edu/wci3/wci_book.html
title: Rezension: "Geschichte als Politik: Der deutsch-polnische Historikerdialog im 20. Jahrhundert" / Stefan Guth. München: De Gruyter Oldenbourg, 2015. ISBN: 9783110346114
Creators: name: Henschel, Christhardt
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: Es ist der Berner Historiker Stefan Guth, der sich in seiner Dissertationsschrift der schwierigen Aufgabe stellte, die wechselhafte Beziehungsgeschichte beider nationaler Historiographien über Generationsgrenzen und die tiefgreifenden politischen Zäsuren des letzten Jahrhunderts hinweg zu synthetisieren. Die mit dem Klaus-Mehnert-Preis der DGO ausgezeichnete Arbeit lässt kaum Raum für wesentliche inhaltliche Kritik. Der Autor hat vielfältige Quellen wissenschaftlicher Institutionen, aber auch die Überlieferung von Ministerien und anderen regierungsamtlichen Stellen herangezogen, die zum Teil bislang kaum genutzt wurden. Guth kommt mit seiner Arbeit vor allem das Verdienst zu, eine erste Gesamtdarstellung des „deutsch-polnischen Historikerdialogs" vorgelegt zu haben, die von der Zwischenkriegszeit bis in die 1970er Jahre (bzw. im Falle der DDR bis in die 1980er Jahre) reicht. Dabei analysiert er die historiographischen Entwicklungen beiderseits der Oder in ihren jeweils eigenen inneren Dynamiken, arbeitet deren Spiegelung in den jeweils konkurrierenden Narrativen im Nachbarland heraus und zeichnet schließlich den Weg zu einer konstruktiveren Diskussionskultur im deutsch-polnischen Historikermilieu sachlich und kenntnisreich nach.
Charmonium-Nucleon Dissociation Cross Sections in the Quark Model
Creators: name: Hilbert, J. P.
name: Black, N.
name: Barnes, T.
name: Swanson, E. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Charmonium dissociation cross sections due to flavor-exchange charmonium-baryon scattering are computed in the constituent quark model. We present results for inelastic $J/ψN$ and $η_c N$ scattering amplitudes and cross sections into 46 final channels, including final states composed of various combinations of $D$, $D^*$, $Σ_c$, and $Λ_c$. These results are relevant to experimental searches for the deconfined phase of quark matter, and may be useful in identifying the contribution of initial $c\bar c$ production to the open-charm final states observed at RHIC through the characteristic flavor ratios of certain channels. These results are also of interest to possible charmonium-nucleon bound states.
description: 10 pages, 5 eps figures, revtex
Fast switching NMR system for measurements of ground-state quadrupole moments of short-lived nuclei
Creators: name: Minamisono, K.
name: Weerasiri, R. R.
name: Crawford, H. L.
name: Mantica, P. F.
name: Matsuta, K.
name: Minamisono, T.
name: Pinter, J. S.
name: Stoker, J. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A beta-ray detecting nuclear quadrupole resonance system has been developed at NSCL/MSU to measure ground-state electric quadrupole moments of short-lived nuclei produced as fast rare isotope beams. This system enables quick and sequential application of multiple transition frequencies over a wide range. Fast switching between variable capacitors in resonance circuits ensures sufficient power delivery to the coil in the beta-ray detecting nuclear magnetic resonance technique. The fast switching technique enhances detection efficiency of resonance signals and is especially useful when the polarization and/or production rate of the nucleus of interest are small and when the nuclear spin is large.
Lessons from Surveys of The Galaxy
Creators: name: Wyse, Rosemary F. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I present a brief survey of surveys, and their results and implications, intended to set the context for the ensuing discussion.
description: 14 pages, 2 figures, uses Mem SA It latex file mem.cls, included. Opening talk, Joint Discussion 13, `Exploiting Large Surveys for Galactic Astronomy', XXVI General Assembly of the IAU, Prague 2006
title: Recenzja: "Schreiben über den Holocaust. Zur literarischen Kommunikation in Marian Pankowskis Erzählung „Nie ma Żydówki“"/ Iris Bauer. Stuttgart: ibidem Verlag, 2014. ISBN: 978-3-8382-0587-8
Creators: name: Daroch, Magdalena
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: Książka Iris Bauer Schreiben über den Holocaust. Zur literarischen Kommunikation in Marian Pankowskis Erzählung „Nie ma Żydówki" (Pisarstwo o Holokauście. O komunikacji literackiej w opowiadaniuMariana Pankowskiego „Nie ma Żydówki"[1]) została wydana w ramach serii Literatur und Kultur im mittleren und östlichen Europa (Literatura i kultura w Europie środkowej i wschodniej). Jej autorka jest pracownikiem naukowym Centrum Badawczego Historii i Kultury Krajów Europy Środkowo-Wschodniej przy uniwersytecie w Lipsku, gdzie zajmuje się współczesną literaturą polską podejmującą tematykę żydowską oraz problematykę Holokaustu. Zrozumiałe jest więc zainteresowanie twórczością Mariana Pankowskiego, byłego więźnia obozów niemieckich i męża ocalałej z zagłady Żydówki, autora m.in. głośnych powieści Matuga idzie, Z Auszwicu do Belsen, czy dramatów Teatrowanie nad świętym barszczem i Podróż rodziców mej żony do Treblinki.
ASKAP observations of multiple rapid scintillators reveal a degrees-long plasma filament
Creators: name: Wang, Yuanming
name: Tuntsov, Artem
name: Murphy, Tara
name: Lenc, Emil
name: Walker, Mark
name: Bannister, Keith
name: Kaplan, David L.
name: Mahony, Elizabeth K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the results from an Australian Square Kilometre Array Pathfinder search for radio variables on timescales of hours. We conducted an untargeted search over a 30 deg$^2$ field, with multiple 10-hour observations separated by days to months, at a central frequency of 945 MHz. We discovered six rapid scintillators from 15-minute model-subtracted images with sensitivity of $\sim 200\,μ$Jy/beam; two of them are extreme intra-hour variables with modulation indices up to $\sim 40\%$ and timescales as short as tens of minutes. Five of the variables are in a linear arrangement on the sky with angular width $\sim 1$ arcmin and length $\sim 2$ degrees, revealing the existence of a huge plasma filament in front of them. We derived kinematic models of this plasma from the annual modulation of the scintillation rate of our sources, and we estimated its likely physical properties: a distance of $\sim 4$ pc and length of $\sim 0.1$ pc. The characteristics we observe for the scattering screen are incompatible with published suggestions for the origin of intra-hour variability leading us to propose a new picture in which the underlying phenomenon is a cold tidal stream. This is the first time that multiple scintillators have been detected behind the same plasma screen, giving direct insight into the geometry of the scattering medium responsible for enhanced scintillation.
description: 20 pages, 16 figures; accepted for publication in MNRAS
The Catchment Area of Jets
Creators: name: Cacciari, Matteo
name: Salam, Gavin P.
name: Soyez, Gregory
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The area of a jet is a measure of its susceptibility to radiation, like pileup or underlying event (UE), that on average, in the jet's neighbourhood, is uniform in rapidity and azimuth. In this article we establish a theoretical grounding for the discussion of jet areas, introducing two main definitions, passive and active areas, which respectively characterise the sensitivity to pointlike or diffuse pileup and UE radiation. We investigate the properties of jet areas for three standard jet algorithms, k_t, Cambridge/Aachen and SISCone. Passive areas for single-particle jets are equal to the naive geometrical expectation πR^2, but acquire an anomalous dimension at higher orders in the coupling, calculated here at leading order. The more physically relevant active areas differ from πR^2 even for single-particle jets, substantially so in the case of the cone algorithms like SISCone with a Tevatron Run-II split--merge procedure. We compare our results with direct measures of areas in parton-shower Monte Carlo simulations and find good agreement with the main features of the analytical predictions. We furthermore justify the use of jet areas to subtract the contamination from pileup.
description: 42 pages, 17 figures. Improved text. Added a summary table of all definitions in Conclusions. Version published in JHEP
title: Rezension: "Wzory jedzenia a struktura społeczna/ Justyna Straczuk, Zbigniew Karpiński, Henryk Domański, Dariusz Przybysz (Hrsg.). Warszawa: Scholar, 2016. ISBN: 978-83-7383-794-2
Creators: name: Sawicki, Jakub
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: Die vorliegende Studie stützt sich auf eine 2013 durchgeführte repräsentative Umfrage mit 2.361 Polinnen und Polen. Inspiriert von einer 1997 und 2012 in Nordeuropa durchgeführten Untersuchung, beziehen sich die meisten Fragen auf die Essmuster des Vortages (S. 233). Trotz des Wissens um mangelnde Vergleichbarkeit wurden vom Team um Domański aus dem Institut für Philosophie und Soziologie der Polnischen Akademie der Wissenschaften in Warschau Kontrollfragen nach den üblichen Essgewohnheiten hinzugefügt (235f.) und einige Aspekte der polnischen Lebenswirklichkeit angepasst.
title: Recenzja: "Kunst zur Kriegszeit 1914–1918: Künstler aus Schlesien zwischen Hurrapatriotismus und Friedenssucht / Sztuka czasu wojny 1914–1918: Artyści ze Śląska między hurrapatriotyzmem i pragnieniem pokoju" / Johanna Brade, Tobias Weger. Görlitz, Zittau: Verlag Gunter Oettel, 2015. ISBN: 978-3-944560-16-8
Creators: name: Jarząbek, Marcin
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: W 2015 roku Muzeum Śląskie (Schlesisches Museum) w Görlitz przygotowało wystawę czasową „Kunst zur Kriegszeit 1914-1918: Künstler aus Schlesien zwischen Hurrapatriotismus und Friedenssehnsucht". Pokazano wtedy przeszło 200 dzieł śląskich artystów z okresu I wojny światowej, wiele z nich – po raz pierwszy. Efektem tej wystawy jest także obszerne, dwujęzyczne (niemiecko-polskie) i bogato ilustrowane wydawnictwo – znacznie więcej niż standardowy katalog muzealny. Książka „Kunst zur Kriegszeit / Sztuka czasu wojny" zarówno w warstwie dokumentacyjnej, jak i interpretacyjnej jest bowiem pracą godną pochwały.
On the Chow groups of Plücker hypersurfaces in Grassmannians
Creators: name: Laterveer, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14C15, 14C25

description: Motivated by the generalized Bloch conjecture, we formulate a conjecture about the Chow groups of Plücker hypersurfaces in Grassmannians. We prove weak versions of this conjecture.
description: 11 pages, to appear in Archiv Math., comments welcome !
Strange and Heavy Flavoured Hypernuclei in Chiral Soliton Models
Creators: name: Kopeliovich, Vladimir B.
name: Shunderuk, Andrei M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The extention of the chiral soliton approach to hypernuclei - strange or heavy flavoured - becomes more reliable due to success in describing of other properties of nuclei, e.g. the symmetry energy of nuclei with atomic numbers up to ~30. The binding energies of the ground states of light hypernuclei with strangeness S=-1 have been described in qualitative agreement with data. The existence of charmed or beautiful hypernuclei and Theta-hypernuclei (strange, charmed or beautiful) with large binding energy is expected within same approach.
description: 5 pages, 4 figures. Talk given at the 9-th International Conference on Hypernuclei and Strange Particle Physics (HYP2006), Mainz, Germany, 10-14 October 2006. Extended version "Baryon States in Chiral Soliton Models; from Nuclei to Exotic Baryons" presented at the International Workshop "High Energy Physics in the LHC Era", Universidad Tecnica Federico Santa Maria, Valparaiso, Chile, 11-15 December 2006
Statistical analysis of BATSE gamma-ray bursts: Self-similarity and the Amati-relation
Creators: name: Borgonovo, L.
name: Bjornsson, C. -I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The statistical properties of a complete, flux limited sample of 197 long gamma--ray bursts (GRBs) detected by BATSE are studied. In order to bring forth their main characteristics, care was taken to define a representative set of ten parameters. A multivariate analysis gives that ~70% of the total variation in parameter values is driven by only three principal components. The variation of the temporal parameters is clearly distinct from that of the spectral ones. A close correlation is found between the half-width of the autocorrelation function (tau) and the emission time (Tem); most importantly, this correlation is self-similar in the sense that the mean values and dispersions of both tau and Tem scale with the duration of the burst (T90). It is shown that the Amati-relation can be derived from the sample and that the scatter around this relation is correlated with the value of tau. Hence, tau has a role similar to that of the break in the afterglow light curve (Tb) in the Ghirlanda-relation. In the standard GRB-scenario, the close relation between a global parameter (Tb) and a local one (tau) indicates that some of the jet-properties do not vary much for different lines of sight. Finally, it is argued that the basic temporal and spectral properties are associated with individual pulses, while the overall properties of a burst is determined mainly by the number of pulses.
description: 13 pages, 6 figures, accepted for publication to ApJ with minor changes
title: Rezension: "The Great Powers and Poland: From Versailles to Yalta" / Jan Karski. Lanham, MD: Rowman & Littlefield Publishers, 2014. ISBN: 978-1-4422-2664-7
Creators: name: Gasimov, Zaur
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: Karski war derjenige, der die internationale Öffentlichkeit über die Gräueltaten und den Massenmord an den europäischen und polnischen Juden informierte. Vom Yad Vashem wurde Karski später als Gerechter unter den Völkern ausgezeichnet. Wie Abertausende von polnischen Intellektuellen ging auch Karski nach dem Zweiten Weltkrieg ins amerikanische Exil. Er wurde an der Georgetown University promoviert und lehrte dann etwa vierzig Jahre lang an der School of Foreign Service. Seine Forschung zur europäischen und polnischen Diplomatie beruhte nicht nur auf Archivstudien, unter anderem auch im kommunistischen Polen, das er in den 1970er Jahren besuchen konnte, sondern auch auf dokumentierten Erinnerungen sowie persönlich geführten Gesprächen mit hochrangigen polnischen Politikern und Geheimdienstlern, die sich nach 1945 ins westliche Exil gerettet hatten. Darüber hinaus schöpfte Karski aus seiner eigenen Erfahrung als Diplomat sowie aus den Erfahrungen von Zeitzeugen des Zweiten Weltkrieges. Seine Monographie The Great Powers and Poland, 1919-1945 erschien erstmals 1985 bei University Press of America (Lanham, MD). Fast dreißig Jahre später gab Rowman&Littlefield die Jubiläumsausgabe der Monographie unter dem Titel "The Great Powers and Poland. From Versailles to Yalta" heraus. Der Autor widmete die Monographie seinem Kollegen Peter F. Krogh.
Strings in plane-fronted gravitational waves
Creators: name: Duval, C.
name: Horvath, Z.
name: Horvathy, P. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Brinkmann's plane-fronted gravitational waves with parallel rays --~shortly pp-waves~-- are shown to provide, under suitable conditions, exact string vacua at all orders of the sigma-model perturbation expansion.
description: 7 pages, no figures
Prediction of Covalent Metal-Metal Bonding in Cp-M-M'-Nacnac Complexes of Group 2 and 12 Metals (Be, Mg, Ca, Zn, Cd, Hg)
Creators: name: Gosch, Matthew
name: Wilson, David
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 3405
subject: Organic chemistry
classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences
classificationCode: 3406
subject: Physical chemistry
classificationCode: 3402
subject: Inorganic chemistry

description: Bimetallic CpMM'Nacnac molecules with group 2 and 12 metals (M=Be, Mg, Ca, Zn, Cd, Hg) that contain novel metal-metal bonding have been investigated in a theoretical study of their molecular and electronic structure, thermodynamic stability, and metal-metal bonding. In all cases the metal-metal bonds are characterized as electron-sharing covalent single bonds from natural bond orbital (NBO) and energy-decomposition analysis with natural orbitals of chemical valence (EDA-NOCV) analysis. The sum of [MM′] charges is relatively constant, with all complexes exhibiting a [MM′]2+ core. Quantum theory of atoms in molecules (QTAIM) analysis indicates the presence of non-nuclear attractors (NNA) in the metal-metal bonds of the BeBe, MgMg, and CaCa complexes. There is substantial electron density (0.75–1.33 e) associated with the NNAs, which indicates that these metal-metal bonds, while classified as covalent electron-sharing bonds, retain significant metallic character that can be associated with reducing reactivity of the complex. The predicted stability of these complexes, combined with their novel covalent metal-metal bonding and potential as reducing agents, make them appealing targets for the synthesis of new metal-metal bonds.
DoFE: Domain-oriented Feature Embedding for Generalizable Fundus Image Segmentation on Unseen Datasets
Creators: name: Wang, Shujun
name: Yu, Lequan
name: Li, Kang
name: Yang, Xin
name: Fu, Chi-Wing
name: Heng, Pheng-Ann
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Deep convolutional neural networks have significantly boosted the performance of fundus image segmentation when test datasets have the same distribution as the training datasets. However, in clinical practice, medical images often exhibit variations in appearance for various reasons, e.g., different scanner vendors and image quality. These distribution discrepancies could lead the deep networks to over-fit on the training datasets and lack generalization ability on the unseen test datasets. To alleviate this issue, we present a novel Domain-oriented Feature Embedding (DoFE) framework to improve the generalization ability of CNNs on unseen target domains by exploring the knowledge from multiple source domains. Our DoFE framework dynamically enriches the image features with additional domain prior knowledge learned from multi-source domains to make the semantic features more discriminative. Specifically, we introduce a Domain Knowledge Pool to learn and memorize the prior information extracted from multi-source domains. Then the original image features are augmented with domain-oriented aggregated features, which are induced from the knowledge pool based on the similarity between the input image and multi-source domain images. We further design a novel domain code prediction branch to infer this similarity and employ an attention-guided mechanism to dynamically combine the aggregated features with the semantic features. We comprehensively evaluate our DoFE framework on two fundus image segmentation tasks, including the optic cup and disc segmentation and vessel segmentation. Our DoFE framework generates satisfying segmentation results on unseen datasets and surpasses other domain generalization and network regularization methods.
description: Accepted at IEEE-TMI 2020
Matrix Factorizations and Homological Mirror Symmetry on the Torus
Creators: name: Knapp, Johanna
name: Omer, Harun
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider matrix factorizations and homological mirror symmetry on the torus T^2 using a Landau-Ginzburg description. We identify the basic matrix factorizations of the Landau-Ginzburg superpotential and compute the full spectrum, taking into account the explicit dependence on bulk and boundary moduli. We verify homological mirror symmetry by comparing three-point functions in the A-model and the B-model.
description: 41 pages, 9 figures, v2: reference added, minor corrections and clarifications, version published in JHEP
Test4Enforcers: Test Case Generation for Software Enforcers
Creators: name: Guzman, Michell
name: Riganelli, Oliviero
name: Micucci, Daniela
name: Mariani, Leonardo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: Software enforcers can be used to modify the runtime behavior of software applications to guarantee that relevant correctness policies are satisfied. Indeed, the implementation of software enforcers can be tricky, due to the heterogeneity of the situations that they must be able to handle. Assessing their ability to steer the behavior of the target system without introducing any side effect is an important challenge to fully trust the resulting system. To address this challenge, this paper presents Test4Enforcers, the first approach to derive thorough test suites that can validate the impact of enforcers on a target system. The paper also shows how to implement the Test4Enforcers approach in the DroidBot test generator to validate enforcers for Android apps.
description: For associated video presentation, see https://youtu.be/TcOTlo4ILmo. For associated slides, see https://www.slideshare.net/OlivieroRiganelli/test4enforcers-test-case-generation-for-software-enforcers
INTEGRAL observations of AGN obscured by the Galactic Plane
Creators: name: Molina, M.
name: Malizia, A.
name: Bassani, L.
name: Bird, A. J.
name: Dean, A. J.
name: Landi, R.
name: De Rosa, A.
name: Walter, R.
name: Barlow, E. J.
name: Clark, D. J.
name: Hill, A. B.
name: Sguera, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we present INTEGRAL observations of 7 AGNs: two newly discovered type 1 Seyferts, IGR J18027-1455 and IGR J21247+5058, and five well known Seyferts, NGC 6814 (type 1.5), Cyg A (Type 2), MCG-05-23-16 (type 2), ESO 103-G035 (type2) and GRS1734-292. For IGR J18027-1455 and IGR J21247+5058 only INTEGRAL/IBIS data were available, while broadband spectra are presented and discussed for the remaining 5 sources for which either BeppoSAX or ASCA data were used in conjunction with INTEGRAL measurements. In the cases of NGC 6814 and GRS 1734-292, data taken in different periods indicate variability in the flux: in the case of NGC 6814 by a factor of 16 over a period of about 10 years. Although limited in size, our sample can be used to investigate the parameter space of both the photon index and cut-off energy. The mean photon index is 1.8, while the cut-off energy ranges from 30-50 keV to greater than 200 keV; in the particular case of MCG-05-23-16, ESO 103-G035 and GRS 1734-292 the cut-off energy is well constrained at or below 100 keV. We have also tested an enlarged sample, which includes INTEGRAL data of 3 more AGNs, against the correlation found by a number of authors between the photon index and the cut-off energy but have found no evidence for a relation between these two parameters. Our analysis indicates that there is a diversity in cut-off energies in the primary continuum of Seyfert galaxies.
description: 8 pages, 10 figures, accepted for pubblication on MNRAS
title: ‘Inclosed in this tabernacle of flesh’: body, soul, and the singing voice
Creators: name: Wistreich, R.
Publisher: name: Journal of the Northern Renaissance
Year: 2017

description: This essay considers how early modern constructions of the singing voice are embedded into a range of philosophical discourses that spread far wider than the usual concerns of music scholarship. Taking as a case study, Battista Guarini's poem 'Mentre vaga Angioletta' (1581), it investigates of some of the broader concepts, both philosophical and ‘scientific’, which lie behind the poem’s engagement with the operation of a particular singing voice, and its effects on the body of the one who listens. It provides a model for fresh ways of considering a fundamental human phenomenon, that is important to comprehending early modern consciousness.
Internal dynamics of the radio halo cluster Abell 773: a multiwavelength analysis
Creators: name: Barrena, R.
name: Boschin, W.
name: Girardi, M.
name: Spolaor, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We conduct an intensive study of the rich, X-ray luminous galaxy cluster A773 at z=0.22 containing a diffuse radio halo to determine its dynamical status. Our analysis is based on new spectroscopic data obtained at the TNG telescope for 107 galaxies, 37 spectra recovered from the CFHT archive and new photometric data obtained at the INT telescope. We use statistical tools to select 100 cluster members (out to ~1.8 Mpc from the cluster centre), to analyse the kinematics of cluster galaxies and to determine the cluster structure. Our analysis is also performed by using X-ray data stored in the Chandra archive. Results: The 2D distribution shows two significant peaks separated by ~2 arcmin in the EW direction with the main western one closely located at the position of the two dominant galaxies and the X-ray peak. The velocity distribution of cluster galaxies shows two peaks at v~65000 and ~67500 km/s, corresponding to the velocities of the two dominant galaxies. The low velocity structure has a high velocity dispersion sigma_v=800-1100 km/s and its galaxies are centred on the western 2D peak. The high velocity structure has intermediate velocity dispersion sigma_v~500 km/s and is characterized by a complex 2D structure with a component centred on the western 2D peak and a component centred on the eastern 2D peak, these components probably being two independent groups.We estimate a cluster mass within 1 Mpc of 6--11 e^14 h_70 Msun. Our analysis of Chandra data shows the presence of two very close peaks in the core and the elongation of the X-ray emission in the NEE--SWW direction. Our results suggest we are looking at probably two groups in an advanced stage of merging. In particular, the radio halo seems to be related to the merger of the eastern group.
description: Accepted for publication in in A&A
Ellis Wormholes in Anti-De Sitter Space
Creators: name: Blázquez-Salcedo, Jose Luis
name: Chew, Xiao Yan
name: Kunz, Jutta
name: Yeom, Dong-han
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct traversable wormholes with anti-de Sitter asymptotics supported by a phantom field. These wormholes are massless and symmetric with respect to reflection of the radial coordinate $η\to - η$. Their circumferential radius decreases monotonically from radial infinity to their single throat. Analogous to their asymptotically flat counterparts, these anti-de Sitter wormholes possess an unstable radial mode.
description: 12 pages, 13 figures
title: Between Englishness and modernism: the critical reception of Tippett’s operas
Creators: name: Hewett, I.
Publisher: name: Centro Studi Opera Omnia Luigi Boccherini
Year: 2020

description: This article is rooted in two large areas of debate, both of particular relevance at this culturally fraught moment. One is the way the work of many twentieth-century composers reveals an interesting and complex interaction between modern (or modernist) elements, and national (or nationalist) elements. The second is the contested nature of Englishness in the decades since the Second World War. Both themes come together in a peculiarly telling and fascinating way in the operas of Michael Tippett. The status of Tippett as an essentially English composer is itself contested, with some preferring to align him with European modernist trends. His operas can be read as revivals of English archetypes such as the masque and the pastoral but are also self-consciously universalist in their projection of ‘archetypal’ figures. The tension between these aspects is to a degree obscured in the works themselves, but it comes into sharp focus in the responses of critics, which are as fascinating as the works themselves. This article focuses on the critical response to Tippett’s operas during the decades of the 1950s, 60s and 70s, mostly in the British broadsheet press but with side-glances at continental (particularly German) responses, and at special-interest (but not academic) journals. Its conclusion is that English writers were caught in the toils of an irreconcilable tension. They wanted to put forward a specifically English riposte to continental modernism, and seized on Michael Tippett’s operas as the answer to that powerful need. His ecstatic lyricism and appeal to undefinable archetypes promised a different route to the objectivity and universalism that were modernism’s defining features. This manoeuvre now seems very much of its time. It is a response to a tension within English intellectual and cultural life, as were the operas themselves.
Eddy induced trapping and homogenization of freshwater in the Bay of Bengal
Creators: name: Paul, Nihar
name: Sukhatme, Jai
name: Sengupta, Debasis
name: Gayen, Bishakdatta
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Freshwater from rivers influences Indian summer monsoon rainfall and regional tropical cyclones by shallowing the upper layer and warming the subsurface ocean in the Bay of Bengal. Here, we use in situ and satellite data with reanalysis products to showcase how river water can experience a significant increase in salinity on subseasonal timescales. This involves the trapping and homogenization of freshwater by a cyclonic eddy in the Bay. Specifically, in October 2015, river water is shown to enter a particularly long-lived eddy along with its attracting manifolds within a period of two weeks. The eddy itself is quite unique in that it lasted for 16 months in the Bay where average lifespans are of the order of 2-3 months. This low salinity water results in the formation of a highly stratified surface layer. In fact, when freshest, the eddy has the highest sea-level anomalies, spins fastest, and supports strong lateral gradients in salinity. Subsequently, observations reveal progressive homogenization of salinity and relaxation of sea-level anomalies and salinity gradients within a month. In particular, salty water spirals in, and freshwater is pulled out across the eddy boundary. Lagrangian experiments elucidate this process, whereby horizontal chaotic mixing provides a mechanism for the rapid increase in surface salinity on the order of timescale of a month. This pathway is distinct from vertical mixing and likely to be important in the eddy-rich Bay of Bengal.
description: 11 pages, 11 Figures
The ethnobotany of the Mestizo people of Suni Miraño, Peru
Creators: name: Ayala, Eduardo Méliton Jovel
Publisher: name: University of British Columbia
Year: 2009

description: The present invasion and depletion of the Peruvian forest continues to erode the traditional knowledge accumulated in the Amazon Basin. Many Indigenous cultures have flourish in the Amazon Basin for at least the last 3,000 years (Lathrap, 1970) while Mestizo culture began approximately 500 years ago, with the arrival of European and other Old World explorers. The richness in biological and cultural diversity of Amazonia forest has inspired many fundamental ethnopharmacological studies on the botany and chemistry of hallucinogenic used in healing practices. These studies have provided us with some information on disease and etiology (Kampinnen, 1988); the uses of medicinal and magical plants (Luna, 1984) and on diet and acculturation (Holmes, 1992). However, many gaps still remain. This research incorporates ethnobotanical field research and laboratory research on the medicinal plants used by Mestizo in Suni Mirano, Peru. Ethnobotanical information on 54 medicinal plants was documented, and 31 crude extracts of some selected plants were submitted to microbiological assays to test for antibiotic and antifungal activity. Included is a description of some illnesses as perceived by Mestizo, diagnosis, etiologies, the patient's role, and how some of the healing procedures are implemented. This information may allow for the explanation and understanding of illness causality, distribution, and treatment/dosage efficacy in medicine as practiced by Amazonian Mestizo. A large number of Amazonia Mestizo communities are dependent on their traditional medical knowledge as their only source of health care. This medical knowledge has been associated with a long tradition of curanderismo and sorcery among Mestizo. It has played a key role in the administration of traditional medicine. Mestizo traditional knowledge, which in some cases may have been adapted from extinct or endanger indigenous cultures (Phillips and Gentry, 1993) has been enhanced by the high capacity of people's mobility in the Amazon flooded forests. Mestizo healer use entheogens, plant able to generate god within it (Ruck, 1979), to interact with the spirit of the forest and receive medical knowledge. This wisdom is embedded in the oral tradition. The rapid depletion of the Peruvian forest by timber companies, oil drilling, agriculture and settlement project is causing serious implications to traditional medical systems and is deteriorating the quality of life in general. The complexity of forest ecosystems provides a significant number of plants used in the formulation of traditional remedies, the loss of these ecosystems will take away the foundation of traditional knowledge and the only medical resources of Aboriginal and Mestizo peoples in Amazonia. Amazonian Mestizo can be assisted in their efforts to achieve the formulation of future management policies for natural resources use, and in the development of sustainable models seeking to provided health, shelter, clothing and food to their communities.
Conditional statistics of electron transport in interacting nanoscale conductors
Creators: name: Sukhorukov, Eugene V.
name: Jordan, Andrew N.
name: Gustavsson, Simon
name: Leturcq, Renaud
name: Ihn, Thomas
name: Ensslin, Klaus
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Interactions between nanoscale semiconductor structures form the basis for charge detectors in the solid state. Recent experimental advances have demonstrated the on-chip detection of single electron transport through a quantum dot (QD). The discreteness of charge in units of e leads to intrinsic fluctuations in the electrical current, known as shot noise. To measure these single-electron fluctuations a nearby coherent conductor, called a quantum point contact (QPC), interacts with the QD and acts as a detector. An important property of the QPC charge detector is noninvasiveness: the system physically affects the detector, not visa-versa. Here we predict that even for ideal noninvasive detectors such as the QPC, when a particular detector result is observed, the system suffers an informational backaction, radically altering the statistics of transport through the QD as compared to the unconditional shot noise. We develop a theoretical model to make predictions about the joint current probability distributions and conditional transport statistics. The experimental findings reported here demonstrate the reality of informational backaction in nanoscale systems as well as a variety of new effects, such as conditional noise enhancement, which are in essentially perfect agreement with our model calculations. This type of switching telegraph process occurs abundantly in nature, indicating that these results are applicable to a wide variety of systems.
description: 16 pages, 3 figures, to appear in Nature Physics
The anti-k_t jet clustering algorithm
Creators: name: Cacciari, Matteo
name: Salam, Gavin P.
name: Soyez, Gregory
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The k_t and Cambridge/Aachen inclusive jet finding algorithms for hadron-hadron collisions can be seen as belonging to a broader class of sequential recombination jet algorithms, parametrised by the power of the energy scale in the distance measure. We examine some properties of a new member of this class, for which the power is negative. This ``anti-k_t'' algorithm essentially behaves like an idealised cone algorithm, in that jets with only soft fragmentation are conical, active and passive areas are equal, the area anomalous dimensions are zero, the non-global logarithms are those of a rigid boundary and the Milan factor is universal. None of these properties hold for existing sequential recombination algorithms, nor for cone algorithms with split--merge steps, such as SISCone. They are however the identifying characteristics of the collinear unsafe plain ``iterative cone'' algorithm, for which the anti-k_t algorithm provides a natural, fast, infrared and collinear safe replacement.
description: 12 pages, 5 figures. Small changes made for publication. Version published in JHEP