Pure Gauge SU(2) Seiberg-Witten Theory and Modular Forms

We identify the spectral curve of pure gauge SU(2) Seiberg-Witten theory with the Weierstrass curve \mathbbm{C}/L \ni z \mapsto (1,\wp(z),\wp(z)') and thereby obtain explicitely a modular form from which the moduli space parameter $u$ and lattice parameters $a$, $a_D$ can be derived in terms of modular respectively theta functions. We further discuss its relationship with the $c=-2$ triplet model conformal field theory.Comment: 11 + 2 pages, no figures, shortened, to be published in jm

On a Logarithmic Deformation of the Supersymmetric bc-system on Curved Manifolds

E. Frenkel, A. Losev and N. Nekrasov claim that a certain class of theories on compact Kahler manifolds and in particular the "gauged" supersymmetric bc-system on CP^1 are logarithmic conformal field theories. We discuss that proposition on a classical level for the bc-system on CP^1. The outcome of our investigation conforms to their conjecture. The property of being a logarithmic CFT thus can be interpreted as an effect of gravity

Auf dem Bibliothekartag im Braunhemd, in der Bibliotheksleitung unauffällig? Kirchner und die UB München im Nationalsozialismus

Die historische Erforschung wissenschaftlicher Bibliothekare während der Zeit des Nationalsozialismus setzte vergleichsweise spät ein und ist bisher noch nicht abschließend erfolgt. Im vorliegenden Beitrag wird das bibliothekarische Handeln Dr. Joachim Kirchners (1890–1978) untersucht, der sich 1933 als Redner auf dem Bibliothekartag in Darmstadt vehement für »Bücherverbrennungen marxistischer, kommunistischer und jüdischer Autoren« aussprach, jedoch später als Direktor der Universitätsbibliothek München (1941–1945) in Einzelfällen für Verfolgte des NS-Regimes eintrat sowie durch umfangreiche Auslagerungen große Teile des Bibliotheksbestandes vor der drohenden Vernichtung im Bombenkrieg bewahrte. Am Beispiel Kirchners wird der Handlungsspielraum ausgelotet, der sich zwischen 1933 und 1945 im bibliothekarischen Berufsalltag ergab.Research on scientific librarians during the time of National Socialism has been started late and did not come yet to an end. This article deals with the behaviour of Joachim Kirchner (1890–1978), an important librarian of his time. On the one hand he gave an enthusiastic speech at the Library Conference in Darmstadt in 1933 supporting the burning of books written by Marxists, Communists and Jews. On the other hand as director of the Library of the University of Munich (1941–1945) he supported persons prosecuted by the Nazi regime working in the library. In addition he preserved many books from the bombardment by removing them from the city of Munich to the countryside. Joachim Kirchner is an outstanding example how inconsistent a librarian could act in different situations during the Third Reich

Rekontextualisierung als Forschungsparadigma des Digitalen

Der Begriff der Rekontextualisierung hat in neueren diskursanalytischen Forschungen zu digitalen Medien einen erstaunlichen Aufschwung erfahren. Die für digitale Medien charakteristische Möglichkeit, durch serielle Reihungen, Rekombination, Einbettung und Vernetzung digitaler Objekte neuen Sinn zu generieren, wird dadurch auf den Begriff gebracht. Auch für methodologische Fragestellungen zu digitalen Forschungsinfrastrukturen und digitalen Methoden kann der Begriff der Rekontextualisierung als Leitkonzept dienen. Der Band diskutiert aus interdisziplinärer Perspektive die Potenziale des Rekontextualisierungsbegriffs als Schlüsselbegriff digitaler Forschung

Digitale Erschließung und Sicherung von aktuellen archäologischen Befunden

Bei Projekten zur Digitalisierung in Geisteswissenschaften ist heute die Realisierung größerer, überregionaler und über das World Wide Web abfragbarer Lösungen erforderlich. Die Beiträge dieses Bandes wurden auf der Tagung des Staatsarchivs Hamburg und des Zentrums "Geisteswissenschaften in der digitalen Welt" an der Universität Hamburg am 10. und 11. April 2006 gehalten. Sie leisten einen interdisziplinären Beitrag zur erforderlichen Standardisierung dieser Angebote, die erst den dringend notwendigen Austausch erleichtern und die gemeinsame Nutzung strukturierter Daten ermöglichen kann.Today, digitization projects in the Humanities require the implementation of larger, supraregional solutions. The contributions in this volume were presented at the conference of the Hamburg State Archives and the Center for the Humanities in the Digital World at the University of Hamburg on April 10 and 11, 2006. They make an interdisciplinary contribution to the required standardisation of corresponding services which can only facilitate the urgently needed exchange of information and make it possible to share structured data

Teaching and Generative AI

With the rapid development of generative AI, teachers are experiencing a new pedagogical challenge, one that promises to forever change the way we approach teaching and learning. As a response to this unprecedented teaching context, this collection—Teaching and Generative AI: Pedagogical Possibilities and Productive Tensions—provides interdisciplinary teachers, librarians, and instructional designers with practical and thoughtful pedagogical resources for navigating the possibilities and challenges of teaching in an AI era. Because our goal with this edited collection is to present nuanced discussions of AI technologies across disciplines, the chapters collectively acknowledge or explore both possibilities and tensions—including the strengths, limitations, ethical considerations, and disciplinary potential and challenges—of teaching in an AI era. As such, the authors in this collection do not simply praise or criticize AI, but thoughtfully acknowledge and explore its complexities within educational settings

Cloning retinoid and peroxisome proliferator-activated nuclear receptors of the Pacific oyster and in silico binding to environmental chemicals

This is the final version of the article. Available from Public Library of Science via the DOI in this record.Disruption of nuclear receptors, a transcription factor superfamily regulating gene expression in animals, is one proposed mechanism through which pollution causes effects in aquatic invertebrates. Environmental pollutants have the ability to interfere with the receptor's functions through direct binding and inducing incorrect signals. Limited knowledge of invertebrate endocrinology and molecular regulatory mechanisms, however, impede the understanding of endocrine disruptive effects in many aquatic invertebrate species. Here, we isolated three nuclear receptors of the Pacific oyster, Crassostrea gigas: two isoforms of the retinoid X receptor, CgRXR-1 and CgRXR-2, a retinoic acid receptor ortholog CgRAR, and a peroxisome proliferator-activated receptor ortholog CgPPAR. Computer modelling of the receptors based on 3D crystal structures of human proteins was used to predict each receptor's ability to bind to different ligands in silico. CgRXR showed high potential to bind and be activated by 9-cis retinoic acid and the organotin tributyltin (TBT). Computer modelling of CgRAR revealed six residues in the ligand binding domain, which prevent the successful interaction with natural and synthetic retinoid ligands. This supports an existing theory of loss of retinoid binding in molluscan RARs. Modelling of CgPPAR was less reliable due to high discrepancies in sequence to its human ortholog. Yet, there are suggestions of binding to TBT, but not to rosiglitazone. The effect of potential receptor ligands on early oyster development was assessed after 24h of chemical exposure. TBT oxide (0.2μg/l), all-trans retinoic acid (ATRA) (0.06 mg/L) and perfluorooctanoic acid (20 mg/L) showed high effects on development (>74% abnormal developed D-shelled larvae), while rosiglitazone (40 mg/L) showed no effect. The results are discussed in relation to a putative direct (TBT) disruption effect on nuclear receptors. The inability of direct binding of ATRA to CgRAR suggests either a disruptive effect through a pathway excluding nuclear receptors or an indirect interaction. Our findings provide valuable information on potential mechanisms of molluscan nuclear receptors and the effects of environmental pollution on aquatic invertebrates.The study was funded by the Centre for Environment, Fisheries and Aquaculture Science (Cefas; https://www.cefas.co.uk) and by the University of Exeter (http://www.exeter.ac.uk)

Development and analysis of the Soil Water Infiltration Global database

In this paper, we present and analyze a novel global database of soil infiltration measurements, the Soil Water Infiltration Global (SWIG) database. In total, 5023 infiltration curves were collected across all continents in the SWIG database. These data were either provided and quality checked by the scientists who performed the experiments or they were digitized from published articles. Data from 54 different countries were included in the database with major contributions from Iran, China, and the USA. In addition to its extensive geographical coverage, the collected infiltration curves cover research from 1976 to late 2017. Basic information on measurement location and method, soil properties, and land use was gathered along with the infiltration data, making the database valuable for the development of pedotransfer functions (PTFs) for estimating soil hydraulic properties, for the evaluation of infiltration measurement methods, and for developing and validating infiltration models. Soil textural information (clay, silt, and sand content) is available for 3842 out of 5023 infiltration measurements ( ∼ 76%) covering nearly all soil USDA textural classes except for the sandy clay and silt classes. Information on land use is available for 76% of the experimental sites with agricultural land use as the dominant type ( ∼ 40%). We are convinced that the SWIG database will allow for a better parameterization of the infiltration process in land surface models and for testing infiltration models. All collected data and related soil characteristics are provided online in *.xlsx and *.csv formats for reference, and we add a disclaimer that the database is for public domain use only and can be copied freely by referencing it. Supplementary data are available at https://doi.org/10.1594/PANGAEA.885492 (Rahmati et al., 2018). Data quality assessment is strongly advised prior to any use of this database. Finally, we would like to encourage scientists to extend and update the SWIG database by uploading new data to it