cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Wie findet und formuliert man eine gute historische Frage?. Teil 5
Creators: name: Kuchenbuch, Daniel
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2022

description: Dieser Text ist eine Verschriftlichung des Eingangsstatements von David Kuchenbuch bei der Diskussionsreihe "Geschichtliche Grundfragen". Die von Rüdiger Graf (ZZF), Matthias Pohlig (HUB) und Ulrike Schaper (FU Berlin) initiierte Veranstaltung fand im Winter- und Sommersemester 2021/22 im Online-Format statt. Zeitgeschichte|online veröffentlicht die Eingangsstatements der Veranstaltung in einem Dossier. Die Vorträge wurden bis auf wenige Ausnahmen von der Audioaufnahme transkribiert und überarbeitet, dabei wurde Wert darauf gelegt, die rein sprachliche Form der Statements beizubehalten.
L. Pérouas, Culte des saints et anticléricalisme. Entre statistique et culture populaire, Préface de D. Roche, Avant-propos de P. D'Hollander et J. Tricard, 2002
Creators: name: Reinhardt, Nicole
Publisher: name: Francia
Year: 2019

description: L. Pérouas, Culte des saints et anticléricalisme. Entre statistique et culture populaire, Préface de D. Roche, Avant-propos de P. D'Hollander et J. Tricard, 2002 (N. Reinhardt)
description: Francia, Bd. 30 Nr. 2 (2003)
Anosov representations with Lipschitz limit set
Creators: name: Pozzetti, Beatrice
name: Sambarino, Andrés
name: Wienhard, Anna
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Dynamical Systems (math.DS)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We study Anosov representations whose limit set has intermediate regularity, namely is a Lipschitz submanifold of a flag manifold. We introduce an explicit linear functional, the unstable Jacobian, whose orbit growth rate is integral on this class of representations. We prove that many interesting higher rank representations, including $Θ$-positive representations, belong to this class, and establish several applications to rigidity results on the orbit growth rate in the symmetric space.
description: several changes in the introduction, minor corrections elsewhere
IVIVC for Extended Release Hydrophilic Matrix Tablets in Consideration of Biorelevant Mechanical Stress
Creators: name: Mohylyuk, Valentyn
name: Goldoozian, Seyedreza
name: Andrews, Gavin P.
name: Dashevskiy, Andriy
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: extended release
subject: gastrointestinal contraction
subject: hydrophilic matrix tablet
subject: IVIVC
subject: pharmacokinetic profile
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: Purpose When establishing IVIVC, a special problem arises by interpretation of averagedin vivoprofiles insight of considerable individual variations in term of time and number of mechanical stress events in GI-tract. The objective of the study was to investigate and forecast the effect of mechanical stress onin vivobehavior in human of hydrophilic matrix tablets. Methods Dissolution profiles for the marketed products were obtained at different conditions (stirring speed, single- or repeatable mechanical stress applied) and convoluted into C-t profiles. Vice versa, publishedin vivoC-t profiles of the products were deconvoluted into absorption profiles and compared with dissolution profiles by similarity factor. Results Investigated hydrophilic matrix tablets varied in term of their resistance against hydrodynamic stress or single stress during the dissolution. Different scenarios, including repeatable mechanical stress, were investigated on mostly prone Seroquel (R) XR 50 mg. None of the particular scenarios fits to the publishedin vivoC-t profile of Seroquel (R) XR 50 mg representing, however, the average of individual profiles related to scenarios differing by number, frequency and time of contraction stress. When different scenarios were combined in different proportions, the profiles became closer to the originalin vivoprofile including a burst between 4 and 5 h, probably, due to stress-events in GI-tract. Conclusion For establishing IVIVC of oral dosage forms susceptible mechanical stress, a comparison of the deconvoluted individualin vivoprofiles within vitroprofiles of different dissolution scenarios can be recommended.
Formal groups and quantum cohomology
Creators: name: Seidel, Paul
Publisher: name: arXiv
Year: 2019
Subjects: subject: Symplectic Geometry (math.SG)
subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We use chain level genus zero Gromov-Witten theory to associate to any closed monotone symplectic manifold a formal group (loosely interpreted), whose Lie algebra is the odd degree cohomology of the manifold (with vanishing bracket). When taken with coefficients mod p, the p-th power map of the formal group is related to quantum Steenrod operations. The motivation for this construction comes from derived Picard groups of Fukaya categories, and from arithmetic aspects of mirror symmetry.
The role of Virus "X" (Tortoise Picornavirus) in kidney disease and shell weakness syndrome in European tortoise species determined by experimental infection
Creators: name: Paries, S.
name: Funcke, S.
name: Kershaw, O.
name: Failing, K.
name: Lierz, M.
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: tortoise
subject: kidney disease
subject: shell weakness syndrome
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::616 Krankheiten
subject: 500 Naturwissenschaften und Mathematik::590 Tiere (Zoologie)::590 Tiere (Zoologie)

description: Tortoise Picornavirus (ToPV) commonly known as Virus "X" was recently discovered in juvenile European tortoises suffering from soft carapace and plastron as well as kidney disease. Therefore, this virus was a potential candidate to be a causative agent for these disease patterns. Spur thighed tortoises (Testudo graeca) seemed to be more susceptible to establish clinical symptoms than other European species like T. hermanni. Thus this trial investigated the role of ToPV in the described syndrome. Two groups of juvenile European tortoises (T. graeca and T.hermanni) each of 10 animals, were cloacally, oronasally and intracoelomically inoculated with an infectious dose (~ 2000 TICD) of a ToPV strain isolated from a diseased T. graeca. A control group of two animals of each species received non-infected cell culture supernatant. The tortoises were examined daily and pharyngeal and cloacal swabs for detection of ToPV-RNA by RT-PCR were taken from each animal every six days for a period of 6 months. At the end of the study the remaining animals were euthanised and dissected. Bacteriological and parasitological tests were performed and organ samples of all tortoises were investigated by RT-PCR for the presence of ToPV and histopathology. Animals that were euthanised at the end of the experiment, were examined for presence of specific anti-ToPV antibodies. Several animals in both inoculated groups showed retarded growth and a light shell weakness, in comparison to the control animals. Three animals were euthanised during the trial, showing reduced weight gain, retarded growth, severe shell weakness and apathy, in parallel to clinical observations in naturally infected animals. In all inoculated animals of both species an intermittent virus shedding, starting from 18 days post inoculation (d.p.i.), till 164 d.p.i. was detected, while the control animals remained negative. The virus was successfully reisolated in terrapene heart cell culture in 16 of 20 inoculated animals of both species. Histopathology of most inoculated animals revealed a lack of bone remodeling and vacuolisation in kidney tubuli which supports the described pathogenesis of nephropathy and osteodystrophy. Anti- ToPV antibody titres ranged from 1:2 to >1:256 in 13 of 20 animals, whereas all control animals were seronegative. The study proofed the Henle Koch`s postulates of ToPV as causative agent for shell dystrophy and kidney disease in both testudo species. The proposed species specific sensitivity towards clinical disease was not observed.
Monge-Ampère gravitation as a $Γ$-limit of good rate functions
Creators: name: Ambrosio, Luigi
name: Baradat, Aymeric
name: Brenier, Yann
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: Monge-Ampère gravitation is a modification of the classical Newtonian gravitation where the linear Poisson equation is replaced by the nonlinear Monge-Ampère equation. This paper is concerned with the rigorous derivation of Monge-Ampère gravitation for a finite number of particles from the stochastic model of a Brownian point cloud, in the spirit of a previous work by the third author [A double large deviation principle for Monge-Ampère gravitation, 2016]. The main step in this derivation is the $Γ-$convergence of the good rate functions corresponding to a one-parameter family of large deviation principles. Surprisingly, the derived model includes dissipative phenomena. As an illustration, we show that it leads to sticky collisions in one space dimension.
B. Demoulin, Recueil des Instructions aux Ambassadeurs et Ministres de France des Traités de Westphalie jusqu'à la Révolution française. XXXI: Principauté de Liège, 1998
Creators: name: Buddruss, Eckhard
Publisher: name: Francia
Year: 2019

description: B. Demoulin, Recueil des Instructions aux Ambassadeurs et Ministres de France des Traités de Westphalie jusqu'à la Révolution française. XXXI: Principauté de Liège, 1998 (E. Buddruss)
description: Francia, Bd. 30 Nr. 2 (2003)
A. J. Mayer, Les Furies. Violence, vengeance, terreur aux temps de la Révolution française et de la Révolution russe, traduit de l'anglais par O. Demange, 2002
Creators: name: Schönpflug, Daniel
Publisher: name: Francia
Year: 2019

description: A. J. Mayer, Les Furies. Violence, vengeance, terreur aux temps de la Révolution française et de la Révolution russe, traduit de l'anglais par O. Demange, 2002 (D. Schönpflug)
description: Francia, Bd. 30 Nr. 2 (2003)
The Weil-Petersson gradient flow of renormalized volume and 3-dimensional convex cores
Creators: name: Bridgeman, Martin
name: Brock, Jeffrey
name: Bromberg, Kenneth
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 32G15, 32Q45, 51P05

description: In this paper, we use the Weil-Petersson gradient flow for renormalized volume to study the space $CC(N;S,X)$ of convex cocompact hyperbolic structures on the relatively acylindrical 3-manifold $(N;S)$. Among the cases of interest are the deformation space of an acylindrical manifold and the Bers slice of quasi-Fuchsian space associated to a fixed surface. To treat the possibility of degeneration along flow-lines to peripherally cusped structures, we introduce a surgery procedure to yield a surgered gradient flow that limits to the unique structure $M_{\rm geod} \in CC(N;S,X)$ with totally geodesic convex core boundary facing $S$. Analyzing the geometry of structures along a flow line, we show that if $V_R(M)$ is the renormalized volume of $M$, then $V_R(M)-V_R(M_{\rm geod})$ is bounded below by a linear function of the Weil-Petersson distance $d_{\rm WP}(\partial_c M, \partial_c M_{\rm geod})$, with constants depending only on the topology of $S$. The surgered flow gives a unified approach to a number of problems in the study of hyperbolic 3-manifolds, providing new proofs and generalizations of well-known theorems such as Storm's result that $M_{\rm geod}$ has minimal volume for $N$ acylindrical and the second author's result comparing convex core volume and Weil-Petersson distance for quasifuchsian manifolds.
F. Guillet, Naissance de la Normandie. Genèse et épanouissement d'une image régionale en France, 1750-1850, 2000
Creators: name: Mieck, Ilja
Publisher: name: Francia
Year: 2019

description: F. Guillet, Naissance de la Normandie. Genèse et épanouissement d'une image régionale en France, 1750-1850, 2000 (I. Mieck)
description: Francia, Bd. 30 Nr. 2 (2003)
title: Surface distribution of pyrethroids following topical application to veterinary species
title: Implications for lateral transport
titleType: Subtitle
Creators: name: Bäumer, Wolfgang
name: Baynes, Ronald
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: lateral transport
subject: pyrethroids
subject: review
subject: 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

description: Pyrethroids like permethrin have been used as topical formulations for their ectoparasiticidal effects since the 1970s. There are numerous efficacy studies in dogs and livestock animals that indicate a fast spread of pyrethroids after topical administration onto rather confined areas of the skin. Some studies correlate the efficacy against ticks, fleas or lice with concentrations of pyrethroids in hair and, less frequently,stratum corneumsamples. It is often stated that lateral transport is responsible for the distribution of the pyrethroids over the body surface. With this review, we attempt to demonstrate evidence for lateral transport of pyrethroids after topical administration in dogs, cattle and sheep and to present data gaps that should be addressed in follow-up studies.
Search for the standard model Higgs boson decaying to a $b\bar{b}$ pair in events with no charged leptons and large missing transverse energy using the full CDF data set
Creators: name: The CDF Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on a search for the standard model Higgs boson produced in association with a vector boson in the full data set of proton-antiproton collisions at $\sqrt{s} = 1.96$ TeV recorded by the CDF II detector at the Tevatron, corresponding to an integrated luminosity of 9.45 fb$^{-1}$. We consider events having no identified charged lepton, a transverse energy imbalance, and two or three jets, of which at least one is consistent with originating from the decay of a $b$ quark. We place 95% credibility level upper limits on the production cross section times standard model branching fraction for several mass hypotheses between 90 and $150 \mathrm{GeV}/c^2$. For a Higgs boson mass of $125 \mathrm{GeV}/c^2$, the observed (expected) limit is 6.7 (3.6) times the standard model prediction.
description: Accepted by Phys. Rev. Lett
The $C_2$-effective spectral sequence for $C_2$-equivariant connective real $K$-theory
Creators: name: Kong, Hana Jia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Topology (math.AT)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 55T99, 55Q91, 19E15

description: We construct a $C_2$-equivariant spectral sequence for RO$(C_2)$-graded homotopy groups. The construction is by using the motivic effective slice filtration and the $C_2$-equivariant Betti realization. We apply the spectral sequence to compute the RO$(C_2)$-graded homotopy groups of the completed $C_2$-equivariant connective real $K$-theory spectrum. The computation reproves the $C_2$-equivariant Adams spectral sequence results by Guillou, Hill, Isaksen and Ravenel.
description: Corrected typos
C. Kampmann, Arbiter und Friedensstiftung. Die Auseinandersetzung um den politischen Schiedsrichter im Europa der Frühen Neuzeit, 2001
Creators: name: Wilson, Peter H.
Publisher: name: Francia
Year: 2019

description: C. Kampmann, Arbiter und Friedensstiftung. Die Auseinandersetzung um den politischen Schiedsrichter im Europa der Frühen Neuzeit, 2001 (P. H. Wilson)
description: Francia, Bd. 30 Nr. 2 (2003)
title: Eine Geschichte im Singular?. Teil 4
Creators: name: Möhring, Maren
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2022

description: Dieser Text ist eine Verschriftlichung des Eingangsstatements von Maren Möhring bei der Diskussionsreihe "Geschichtliche Grundfragen". Die von Rüdiger Graf (ZZF), Matthias Pohlig (HUB) und Ulrike Schaper (FU Berlin) initiierte Veranstaltung fand im Winter- und Sommersemester 2021/22 im Online-Format statt. Zeitgeschichte|online veröffentlicht die Eingangsstatements der Veranstaltung in einem Dossier. Die Vorträge wurden bis auf wenige Ausnahmen von der Audioaufnahme transkribiert und überarbeitet, dabei wurde Wert darauf gelegt, die rein sprachliche Form der Statements beizubehalten.
Torsion and Supersymmetry in Omega-background
Creators: name: Ito, Katsushi
name: Nakajima, Hiroaki
name: Sasaki, Shin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the dimensional reduction of ten-dimensional super Yang-Mills theory in curved backgrounds with torsion. We examine the parallel spinor conditions and the constraints for the torsion parameters which preserve supersymmetry and gauge symmetry in four dimensions. In particular we examine the ten-dimensional Omega-background with the torsion which is identified with the R-symmetry Wilson line gauge fields. After the dimensional reduction, we obtain the Omega-deformed N=4 super Yang-Mills theory. Solving the parallel spinor conditions and the torsion constraints, we classify the deformed supersymmetry associated with the topological twist of N=4 supersymmetry. We also study deformed supersymmetries in the Nekrasov-Shatashvili limit.
description: 26 pages
title: Wie findet und formuliert man eine gute historische Frage?. Teil 5
Creators: name: Neu, Tim
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2022

description: Dieser Text ist eine Verschriftlichung des Eingangsstatements von Tim Neu bei der Diskussionsreihe "Geschichtliche Grundfragen". Die von Rüdiger Graf (ZZF), Matthias Pohlig (HUB) und Ulrike Schaper (FU Berlin) initiierte Veranstaltung fand im Winter- und Sommersemester 2021/22 im Online-Format statt. Zeitgeschichte|online veröffentlicht die Eingangsstatements der Veranstaltung in einem Dossier. Die Vorträge wurden bis auf wenige Ausnahmen von der Audioaufnahme transkribiert und überarbeitet, dabei wurde Wert darauf gelegt, die rein sprachliche Form der Statements beizubehalten.
Global stability of spacetimes with supersymmetric compactifications
Creators: name: Andersson, Lars
name: Blue, Pieter
name: Wyatt, Zoe
name: Yau, Shing-Tung
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35L15, 35Q76, 83E30, 53C25

description: This paper proves the stability, with respect to the evolution determined by the vacuum Einstein equations, of the Cartesian product of high-dimensional Minkowski space with a compact, Ricci-flat Riemannian manifold that admits a spin structure and a nonzero parallel spinor. Such a product includes the example of Calabi-Yau and other special holonomy compactifications, which play a central role in supergravity and string theory. The stability proved in this paper provides a counter example to an instability argument by Penrose.
description: 25 pages
title: Vetorecht der Quellen?. Teil 2
Creators: name: Priemel, Kim Christian
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2022

description: Dieser Text ist eine Verschriftlichung des Eingangsstatement von Kim Christian Priemel bei der Diskussionsreihe "Geschichtliche Grundfragen". Die von Rüdiger Graf (ZZF), Matthias Pohlig (HUB) und Ulrike Schaper (FU Berlin) initiierte Veranstaltung fand im Wintersemester 2021/22 im online-Format statt. Zeitgeschichte|online veröffentlicht die Eingangsstatements der Veranstaltung in einem Dossier. Die Vorträge wurden bis auf wenige Ausnahmen von der Audioaufnahme transkribiert und überarbeitet, dabei wurde Wert darauf gelegt, die rein sprachliche Form der Statements beizubehalten.
Afterglow emission in Gamma-Ray Bursts: I. Pair-enriched ambient medium and radiative blast waves
Creators: name: Nava, L.
name: Sironi, L.
name: Ghisellini, G.
name: Celotti, A.
name: Ghirlanda, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Forward shocks caused by the interaction between a relativistic blast wave and the circum-burst medium are thought to be responsible for the afterglow emission in Gamma-Ray Bursts (GRBs). We consider the hydrodynamics of a spherical relativistic blast wave expanding into the surrounding medium and we generalize the standard theory in order to account for several effects that are generally ignored. In particular, we consider the role of adiabatic and radiative losses on the hydrodynamical evolution of the shock, under the assumption that the cooling losses are fast. Our model can describe adiabatic, fully radiative and semi-radiative blast waves, and can describe the effects of a time-varying radiative efficiency. The equations we present are valid for arbitrary density profiles, and also for a circum-burst medium enriched with electron-positron pairs. The presence of pairs enhances the fraction of shock energy gained by the leptons, thus increasing the importance of radiative losses. Our model allows to study whether the high-energy (>0.1 GeV) emission in GRBs may originate from afterglow radiation. In particular, it is suitable to test whether the fast decay of the high-energy light curve observed in several Fermi LAT GRBs can be ascribed to an initial radiative phase, followed by the standard adiabatic evolution.
description: MNRAS in press. Reverse shock and pre-acceleration of the external medium have been included in the model
Comprender la conquista de México desde el siglo XXI. Introducción
Creators: name: Rinke, Stefan
name: Linares, Federico Navarrete
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: México
subject: conquista
subject: historiografía
subject: Siglo XVI
subject: 900 Geschichte und Geografie::980 Geschichte Südamerikas::980 Geschichte Südamerikas

description: La controversia sobre la conquista de México es tan antigua como este acontecimiento histórico y, sin embargo, aún hoy es de gran relevancia y actualidad. En la historiografía europea, la visión binaria de "vencedores y vencidos" sigue prevaleciendo en muchas partes, aunque la antigua valoración triunfal de estos acontecimientos se convirtió en lo contrario a lo largo del siglo XX. Uno de los objetivos de este dossier es cuestionar la dicotomía entre españoles victoriosos e indios derrotados y presentar nuevas investigaciones sobre este acontecimiento secular desde diferentes perspectivas disciplinarias y nacionales.
Self-Validating Deep Learning for Recovering Terrestrial Water Storage From Gravity and Altimetry Measurements
Creators: name: Irrgang, Christopher
name: Saynisch-Wagner, Jan
name: Dill, Robert
name: Boergens, Eva
name: Thomas, Maik
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: terrestrial water storage
subject: hydrology modeling
subject: hydrosphere
subject: deep learning
subject: downscaling
subject: artificial intelligence
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie

description: Quantifying and monitoring terrestrial water storage (TWS) is an essential task for understanding the Earth's hydrosphere cycle, its susceptibility to climate change, and concurrent impacts for ecosystems, agriculture, and water management. Changes in TWS manifest as anomalies in the Earth's gravity field, which are routinely observed from space. However, the complex underlying distribution of water masses in rivers, lakes, or groundwater basins remains elusive. We combine machine learning, numerical modeling, and satellite altimetry to build a downscaling neural network that recovers simulated TWS from synthetic space-borne gravity observations. A novel constrained training is introduced, allowing the neural network to validate its training progress with independent satellite altimetry records. We show that the neural network can accurately derive the TWS in 2019 after being trained over the years 2003 to 2018. Further, we demonstrate that the constrained neural network can outperform the numerical model in validated regions.
title: Eine Geschichte im Singular?. Teil 4
Creators: name: Rexroth, Frank
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2022

description: Dieser Text ist eine Verschriftlichung des Eingangsstatements von Frank Rexroth bei der Diskussionsreihe "Geschichtliche Grundfragen". Die von Rüdiger Graf (ZZF), Matthias Pohlig (HUB) und Ulrike Schaper (FU Berlin) initiierte Veranstaltung fand im Winter- und Sommersemester 2021/22 im Online-Format statt. Zeitgeschichte|online veröffentlicht die Eingangsstatements der Veranstaltung in einem Dossier. Die Vorträge wurden bis auf wenige Ausnahmen von der Audioaufnahme transkribiert und überarbeitet, dabei wurde Wert darauf gelegt, die rein sprachliche Form der Statements beizubehalten.
An Evans-style result for block designs
Creators: name: Gunasekara, Ajani De Vas
name: Horsley, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B05 (Primary) 05C70 (Secondary)

description: For positive integers $n$ and $k$ with $n \geq k$, an $(n,k,1)$-design is a pair $(V, \mathcal{B})$ where $V$ is a set of $n$ points and $\mathcal{B}$ is a collection of $k$-subsets of $V$ called blocks such that each pair of points occur together in exactly one block. If we weaken this condition to demand only that each pair of points occur together in at most one block, then the resulting object is a partial $(n,k,1)$-design. A completion of a partial $(n,k,1)$-design $(V,\mathcal{A})$ is a (complete) $(n,k,1)$-design $(V,\mathcal{B})$ such that $\mathcal{A} \subseteq \mathcal{B}$. Here, for all sufficiently large $n$, we determine exactly the minimum number of blocks in an uncompletable partial $(n,k,1)$-design. This result is reminiscent of Evans' now-proved conjecture on completions of partial latin squares. We also prove some related results concerning edge decompositions of almost complete graphs into copies of $K_k$.
description: 17 pages, 0 figures
Impurity effect as a probe of the paring symmetry in BiS_{2} based superconductors
Creators: name: Liu, S. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The impurity effects are studied for the BiS_{2}- layered superconductors based on a two orbital model with the Bogoliubov-de-Gennes technique. The superconducting critical temperature (T_{c}) as a function of the mpurity concentration is calculated. Significant reduction of T_{c} is found for spin singlet nearest-neighboring paring d-wave state and the spin triplet next-nearest-neighboring (NNN) paring p-wave state, while no depression of T_{c} for isotropic s-wave state. The single impurity effects for various paring states are also explored. The impurity resonance peak in the local density of states spectrum is found only for the d-wave state. For the spin triplet NNN paring p-wave state, two in-gap peaks occur in the case of positive impurity potential; and a single in-gap peak is found for the negative impurity potential, which shifts towards to lower energy with decreasing the potential strength. These results can be used to detect the paring symmetry of the BiS_{2}- based superconductors.
description: 7 pages, 4 figures
Open Access journals need to become first choice, in invasion ecology and beyond
Creators: name: Jeschke, Jonathan M.
name: Börner, Katy
name: Stodden, Victoria
name: Tockner, Klement
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: Open Access
subject: ecology
subject: journals
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::577 Ökologie
subject: 000 Informatik, Informationswissenschaft, allgemeine Werke::000 Informatik, Wissen, Systeme::000 Informatik, Informationswissenschaft, allgemeine Werke

description: Open Science is a pivotal global movement to advance science and scholarship. It includes key elements such as Open Access to scientific publications, Open Data, Open Source, and Open Methodology (Kraker et al. 2011; McKiernan et al. 2016; Stodden et al. 2016), and therefore fosters reproducibility and verification of findings (Wilkinson et al. 2016). Scientific knowledge, the product of research, is a public good and should thus be made publicly available. The vast majority of researchers agree with the idea of Open Science (Dallmeier-Tiessen et al. 2011), yet many face challenges in implementing Open Science in practice.
title: Wie bestimmt die Distanz zum Untersuchungsgegenstand den Forschungsprozess?. Teil 6
Creators: name: Roper, Lyndal
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2023

description: Dieser Text ist eine Verschriftlichung des Eingangsstatements von Lyndal Roper bei der Diskussionsreihe "Geschichtliche Grundfragen". Die von Rüdiger Graf (ZZF), Matthias Pohlig (HUB) und Ulrike Schaper (FU Berlin) initiierte Veranstaltung fand im Wintersemester 2022/23 im Online-Format statt. Zeitgeschichte|online veröffentlicht die Eingangsstatements der Veranstaltung in einem Dossier. Die Vorträge wurden bis auf wenige Ausnahmen von der Audioaufnahme transkribiert und überarbeitet, dabei wurde Wert darauf gelegt, die rein sprachliche Form der Statements beizubehalten.
The early botanical exploration of Albania (1839-1945)
Creators: name: Lack, Hans Walter
name: Barina, Zoltán
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: Albania
subject: Baldacci
subject: botanical exploration
subject: Dorfler
subject: endemics
subject: Grisebach
subject: Hayek
subject: herbarium record
subject: 500 Naturwissenschaften und Mathematik::580 Pflanzen (Botanik)::580 Pflanzen (Botanik)

description: The botanical exploration of Albania in its modern sense started in the mid-nineteenth century with the collections and publications of A. Grisebach, E. Weiss and C. Grimus von Grimburg, who followed the road from Prizren to Shkoder or were active in the hinterland of the harbours on the Adriatic Sea. In the late nineteenth and early twentieth centuries, A. Baldacci, N. Kosanin and I. Dorfler laid the foundations of the floristic knowledge of Albania, focusing their attention on northern Albania and the coastal regions. A considerable amount of collecting was undertaken during the First World War by people commissioned by or active for the foreign powers occupying the country, with the major results published by A. Hayek in Vienna and S. Javorka in Budapest. In the interwar period, F. Markgraf concentrated his floristic research on central Albania, although his work remained uncompleted. Even during the Second World War, collecting and publishing on the flora of Albania did not come to a stop. However, in the mid-twentieth century considerable areas of Albania remained totally unknown botanically, in particular in the southern part of the country. This contribution gives a detailed and critical overview of the botanical exploration of Albania from 1839 until 1945 with emphasis on the collecting routes, the widely scattered herbarium record and the interdependence of field work and the political (and military) situation in the country.
Probing the origin of giant radio halos through radio and gamma-ray data : the case of the Coma cluster
Creators: name: Brunetti, G.
name: Blasi, P.
name: Reimer, O.
name: Rudnick, L.
name: Bonafede, A.
name: Brown, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We combine all available information about the spectral shape and morphology of the radio halo of the Coma cluster with the gamma-ray upper limits obtained by the Fermi-LAT and with the magnetic field strength derived from Faraday rotation measures (RM). We explore the possibility that the radio halo is due to synchrotron emission of secondary electrons generated via p-p collisions in the intra-cluster-medium (ICM). First we investigate the case of pure secondary models. We use the observed spatial distribution of the halo's radio brightness to constrain the amount of cosmic rays (CRs) and their spatial distribution in the cluster that are required by the model. Under the canonical assumption that the spectrum of CRs is a power-law in momentum and that the spectrum of secondaries is stationary, we find that the combination of the steep spectrum of CRs necessary to explain the spectrum of the halo and their very broad spatial distribution (and large energy density) result in a gamma-ray emission in excess of present limits, unless the cluster magnetic field is sufficiently large. However such a field appears inconsistent with constraints from RM. Second we investigate more complex models based on secondary particles in which CR protons and their secondaries are all reaccelerated by MHD turbulence. We show that under these conditions it is possible to reproduce the radio data and to predict gamma-rays in agreement with the Fermi-LAT limits without tension with constraints on the cluster magnetic field. Reacceleration of secondaries by MHD turbulence also requires a spatial distribution of CRs much flatter than that of the ICM, if both the turbulent and magnetic field energy densities scale with that of the ICM. However broader spatial distributions of turbulence and field and/or the reacceleration of additional primary electrons in the ICM greatly alleviate this requirement.
description: 17 pages, 7 figures, MNRAS in press. Line added in Fig.2 to show the substantial increase of the expected gamma-ray flux, deriving from the adoption of the new brightness profile of the halo from Brown & Rudnick (2011), with respect to calculations based on other profiles derived from older/shallower radio observations (including recent calculations in arXiv:1207.6410 and 1208.0676)
What factors increase the vulnerability of native birds to the impacts of alien birds?
Creators: name: Evans, Thomas
name: Jeschke, Jonathan M.
name: Liu, Chunlong
name: Redding, David W.
name: Sekercioglu, Cagan H.
name: Blackburn, Tim M.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: alien species
subject: EICAT
subject: ornithology
subject: seabirds
subject: shorebirds
subject: woodpeckers
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Biodiversity impacts caused by alien species can be severe, including those caused by alien birds. In order to protect native birds, we aimed to identify factors that influence their vulnerability to the impacts of alien birds. We first reviewed the literature to identify native bird species sustaining such impacts. We then assigned impact severity scores to each native bird species, depending on the severity of the impacts sustained, and performed two types of analyses. First, we used contingency table tests to examine the distribution of impacts across their severity, type and location, and across native bird orders. Second, we used mixed-effects models to test factors hypothesised to influence the vulnerability of native birds to the impacts of alien birds. Ground-nesting shorebirds and seabirds were more prone to impacts through predation, while cavity-nesting woodpeckers and parrots were more prone to impacts through competition. Native bird species were more vulnerable when they occupied islands, warm regions, regions with climatic conditions similar to those in the native range of the invading alien species, and when they were physically smaller than the invading alien species. To a lesser extent, they were also vulnerable when they shared habitat preferences with the invading alien species. By considering the number and type of native bird species affected by alien birds, we demonstrate predation impacts to be more widespread than previously indicated, but also that damaging predation impacts may be underreported. We identify vulnerable orders of native birds, which may require conservation interventions; characteristics of native birds that increase their vulnerability, which may be used to inform risk assessments; and regions where native birds are most vulnerable, which may direct management interventions. The impacts sustained by native birds may be going unnoticed in many regions of the world: there is a clear need to identify and manage them.
Heading choices of flying Drosophila under changing angles of polarized light
Creators: name: Mathejczyk, Thomas F.
name: Wernet, Mathias F.
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: neural circuits
subject: sensory processing
subject: Drosophila
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Many navigating insects include the celestial polarization pattern as an additional visual cue to orient their travels. Spontaneous orientation responses of both walking and flying fruit flies (Drosophila melanogaster) to linearly polarized light have previously been demonstrated. Using newly designed modular flight arenas consisting entirely of off-the-shelf parts and 3D-printed components we present individual flying flies with a slow and continuous rotational change in the incident angle of linear polarization. Under such open-loop conditions, single flies choose arbitrary headings with respect to the angle of polarized light and show a clear tendency to maintain those chosen headings for several minutes, thereby adjusting their course to the slow rotation of the incident stimulus. Importantly, flies show the tendency to maintain a chosen heading even when two individual test periods under a linearly polarized stimulus are interrupted by an epoch of unpolarized light lasting several minutes. Finally, we show that these behavioral responses are wavelength-specific, existing under polarized UV stimulus while being absent under polarized green light. Taken together, these findings provide further evidence supporting Drosophila’s abilities to use celestial cues for visually guided navigation and course correction.
Interplay of Performance-Limiting Nanoscale Features in Cu2ZnSn(S,Se)(4)Solar Cells
Creators: name: Ritzer, Maurizio
name: Schönherr, Sven
name: Schöppe, Philipp
name: Larramona, Gerardo
name: Chone, Christophe
name: Gurieva, Galina
name: Johannes, Andreas
name: Ritter, Konrad
name: Martinez-Criado, Gema
name: Schorr, Susan
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: defects
subject: energy dispersive X-ray spectroscopy
subject: kesterites
subject: nano-XRF
subject: thin-film photovoltaics
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: Highly performing kesterite-based Cu2ZnSn(S,Se)(4)(CZTSSe) thin-film solar cells are typically produced under Cu-poor and Zn-rich synthesis conditions. However, these processing routes also facilitate the formation of secondary phases as well as deviations from stoichiometry, causing intrinsic point defects. Herein, the local composition of CZTSSe absorbers prepared with different nominal cation concentrations is investigated by applying energy dispersive X-ray spectroscopy and synchrotron X-ray fluorescence spectroscopy at the nanoscale to cross-sectional lamellae. The findings confirm the formation of ZnS(Se) secondary phases, whose presence, number, and dimension strongly increase with the reduction of the nominal Cu and increment of the nominal Zn content. Furthermore, the local compositions of the CZTSSe phase within the absorber reveal strong variations, leading to collateral and multiple off-stoichiometry types of the kesterite phase in the absorber, which cause different intrinsic point defects. Therefore, the off-stoichiometry type determined from the integral composition does not represent the complete true picture of this complex material system. Accordingly, the correlation of integral composition with electrical properties or conversion efficiency may be misleading. Overall, the approach provides new experimental insights into the nanoscale relationship among local compositional fluctuations, off-stoichiometry types, and secondary phases in these promising photovoltaic materials.
title: Relevanz der Geschichte. Teil 1
Creators: name: Stollberg-Rilinger, Barbara
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2022

description: Dieser Text ist eine Verschriftlichung des Eingangsstatement von Barbara Stollberg-Rilinger bei der Diskussionsreihe "Geschichtliche Grundfragen". Die von Rüdiger Graf (ZZF), Matthias Pohlig (HUB) und Ulrike Schaper (FU Berlin) initiierte Veranstaltung fand im Wintersemester 2021/22 im online-Format statt. Zeitgeschichte|online veröffentlicht die Eingangsstatements der Veranstaltung in einem Dossier. Die Vorträge wurden bis auf wenige Ausnahmen von der Audioaufnahme transkribiert und überarbeitet, dabei wurde Wert darauf gelegt, die rein sprachliche Form der Statements beizubehalten.
Partially hyperbolic diffeomorphisms homotopic to the identity in dimension 3, Part II: Branching foliations
Creators: name: Barthelmé, Thomas
name: Fenley, Sergio R.
name: Frankel, Steven
name: Potrie, Rafael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We study $3$-dimensional partially hyperbolic diffeomorphisms that are homotopic to the identity, focusing on the geometry and dynamics of Burago and Ivanov's center stable and center unstable \emph{branching} foliations. This extends our study of the true foliations that appear in the dynamically coherent case (see \emph{Partially hyperbolic diffeomorphisms homotopic to the identity in dimension 3, Part I: The dynamically coherent case}, arxiv:1908.06227v3). We complete the classification of such diffeomorphisms in Seifert fibered manifolds. In hyperbolic manifolds, we show that any such diffeomorphism is either dynamically coherent and has a power that is a discretized Anosov flow, or is of a new potential class called a \emph{double translation}.
description: This is the second part of arxiv:1908.06227v1 that was split in two. This version has a new part 2-specific introduction and some improved explanations in the text. v2: This is the final accepted version. Some improvements in the text thanks to referees reports
Ausstellungskalender
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 3 Nr. 7 (1950): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Temporal solitons in optical microresonators
Creators: name: Herr, T.
name: Brasch, V.
name: Jost, J. D.
name: Wang, C. Y.
name: Kondratiev, N. M.
name: Gorodetsky, M. L.
name: Kippenberg, T. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Dissipative solitons can emerge in a wide variety of dissipative nonlinear systems throughout the fields of optics, medicine or biology. Dissipative solitons can also exist in Kerr-nonlinear optical resonators and rely on the double balance between parametric gain and resonator loss on the one hand and nonlinearity and diffraction or dispersion on the other hand. Mathematically these solitons are solution to the Lugiato-Lefever equation and exist on top of a continuous wave (cw) background. Here we report the observation of temporal dissipative solitons in a high-Q optical microresonator. The solitons are spontaneously generated when the pump laser is tuned through the effective zero detuning point of a high-Q resonance, leading to an effective red-detuned pumping. Red-detuned pumping marks a fundamentally new operating regime in nonlinear microresonators. While usually unstablethis regime acquires unique stability in the presence of solitons without any active feedback on the system. The number of solitons in the resonator can be controlled via the pump laser detuning and transitions to and between soliton states are associated with discontinuous steps in the resonator transmission. Beyond enabling to study soliton physics such as soliton crystals our observations open the route towards compact, high repetition-rate femto-second sources, where the operating wavelength is not bound to the availability of broadband laser gain media. The single soliton states correspond in the frequency domain to low-noise optical frequency combs with smooth spectral envelopes, critical to applications in broadband spectroscopy, telecommunications, astronomy and low phase-noise microwave generation.
description: Includes Supplementary Information
A new Viola (Violaceae) from the Argentinian Andes
Creators: name: Watson, John M.
name: Flores, Ana R.
name: Arroyo-Leuenberger, Silvia C.
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: Andes
subject: Argentina
subject: endemic
subject: new species
subject: Viola beati
subject: Viola sect. Andinium
subject: Viola singularis
subject: 500 Naturwissenschaften und Mathematik::580 Pflanzen (Botanik)::580 Pflanzen (Botanik)

description: Viola beati, a hitherto unknown species of V. sect. Andinium (Violaceae) is described and illustrated. It is an inconspicuous, diminutive, perennial forb currently known from only one locality in NW Argentina. We draw attention to its morphology, ecology, rarity and endemism. The differences between V. beati and its apparently only close relative, V. singularis J. M. Watson & A. R. Flores, are defined.
Error-Resilient Floquet Geometric Quantum Computation
Creators: name: Wang, Yuan-Sheng
name: Liu, Bao-Jie
name: Su, Shi-Lei
name: Yung, Man-Hong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We proposed a new geometric quantum computation (GQC) scheme, called Floquet GQC (FGQC), where error-resilient geometric gates based on periodically driven two-level systems can be constructed via a new non-Abelian geometric phase proposed in a recent study [V. Noviĉenko \textit{et al}, Phys. Rev. A 100, 012127 (2019) ]. Based on Rydberg atoms, we gave possible implementations of universal single-qubit gates and a nontrivial two-qubit gate for FGQC. By using numerical simulation, we evaluated the performance of the FGQC Z and X gates in the presence of both decoherence and a certain kind of systematic control error. The gate fidelities of the Z and X gates are $F_{X,\text{gate}}\approx F_{Z,\text{gate}}\approx 0.9992$. The numerical results provide evidence that FGQC gates can achieve fairly high gate fidelities even in the presence of noise and control imperfection. In addition, we found FGQC is robust against global control error, both analytical demonstration and numerical evidence were given. Consequently, this study makes an important step towards robust geometric quantum computation.
description: 12 pages,7 figures