Prof. Dr. Thomas Krämer
Profil
Forschungsthemen3
Charakteristische Zykel und Darstellungstheorie
Quelle ↗Förderer: DFG Sachbeihilfe Zeitraum: 10/2020 - 04/2025 Projektleitung: Prof. Dr. Thomas Krämer
GRK 2965/1: „Von Geometrie zu Zahlen: Moduli, Hodge Theorie, rationale Punkte“
Quelle ↗Förderer: DFG Graduiertenkolleg Zeitraum: 10/2024 - 09/2029 Projektleitung: Prof. Dr. Gavril Farkas
GRK 2965: Von Geometrie zu Zahlen: Moduli, Hodge Theorie, rationale Punkte
Quelle ↗Förderer: DFG Graduiertenkolleg Zeitraum: 10/2024 - 09/2029 Projektleitung: Prof. Dr. Stefan Schreieder
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Publikationen25
Top 25 nach Zitationen — Quelle: OpenAlex (BAAI/bge-m3 embedded für Matching).
Computing in cardiology · 98 Zitationen · DOI
We present a novel machine learning-based method for heart sound classification which we submitted to the Phy-sioNet/CinC Challenge 2016. Our method relies on a robust feature representation-generated by a wavelet-based deep convolutional neural network (CNN)-of each cardiac cycle in the test recording, and support vector machine classification. In addition to the CNN-based features, our method incorporates physiological and spectral features to summarize the characteristics of the entire test recording. The proposed method obtained a score, sensitivity, and specificity of 0.812, 0.848, and 0.776, respectively, on the hidden challenge testing set.
J.B. Metzler eBooks · 9 Zitationen · DOI
Wichtiger Baustein zur deutschen Kinder- und Jugendliteratur. In repräsentativer Auswahl werden die zentralen Werke aus allen Gattungen und Genres der Kinder- und Jugendliteratur der SBZ/DDR vorgestellt. Mit ausführlicher Bibliografie erschließt der Band den aktuellen Forschungsstand
J.B. Metzler eBooks · 4 Zitationen · DOI
Kinder- und Jugendzeitschriften der DDR waren integraler Teil des Gesamtsystems der DDR-Kinder- und Jugendliteratur mit quantitativ kaum überschaubarem Textbestand. Dabei hatten die Zeitschriften wichtige Text-, v. a. aber Bildorientierungen als Komplementärmaterial zu Buchpublikationen und Unterrichtsstoffen zu geben. Den Zeitschriften oblag eine vermittelnde Funktion im Beziehungsgefüge von literarischer Unterhaltung mit pädagogischen Zielstellungen bei höchstmöglicher politisch-ideologischer Effizienz. Die Auflagen von Bummi, ABC-Zeitung, Atze, Frösi und Trommel waren so hoch, dass statistisch auf jedes Kind in der DDR monatlich 3,5 Zeitschriften entfielen. (Doderer 1984, Bd. 1, S. 299) Der Zentralrat der FDJ fungierte über die Verlage Junge Welt und Neues Leben als Herausgeber. Im Verlagssystem nahmen diese entsprechend Alter und Sozialisation ihrer Zielgruppen verschiedene Aufgaben wahr, wobei die politisch-ideologischen Maßgaben stets im Mittelpunkt standen.
Journal of the Association for Consumer Research · 3 Zitationen · DOI
Previous articleNext article FreeThe Science of Extraordinary BeliefsThe Science of Extraordinary Beliefs: An Introduction to This IssuePankaj Aggarwal, Lauren Block, Thomas Kramer, and Ann L. McGillPankaj Aggarwal, Lauren Block, Thomas Kramer, and Ann L. McGillPankaj Aggarwal ([email protected]) is a professor of marketing at the University of Toronto. Lauren Block ([email protected]) is the Lippert Professor of Marketing at Baruch College's Zicklin School of Business. Thomas Kramer ([email protected]) is an associate professor of marketing in the School of Business Administration at the University of California, Riverside. Ann McGill ([email protected]) is the Sears Roebuck Professor of Marketing and Behavioral Science at the University of Chicago Booth School of Business.PDFPDF PLUSFull Text Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinked InRedditEmailQR Code SectionsMoreConsumers' judgments, choices, and actions depend on their likes, values, and beliefs—plus the decision rules that put them together and the cultural forces that shape them. The present issue focuses on beliefs—consumers' understanding of what things are and how they work—and showcases the ways in which these beliefs may be extraordinary, as standing outside established rules of science. Hence, the research in this issue takes on familiar areas of investigation involving "ordinary" judgments such as assessments of cause and effect or the determination of kind or category. However, this work stands apart from those vast literatures on causal reasoning and concept formation by considering judgments that go beyond mundane conclusions about what caused what and what something is, beliefs that are "extra" in some sense. Our characterization of these beliefs as "extraordinary" centers therefore on the content of these beliefs, not on whether or not they are commonplace or infrequent—they may in fact arise frequently—and not on the psychological processes that produce them—they may indeed tap well-worn processes. The beliefs are "extra" in that they hold as true something that seemingly cannot be. We expose beliefs that are, frankly, amiss in that they suggest causal connections involving magic, superstition, fate, and luck, or because they suggest a peculiar dual categorization in which things actually are people, at least a little bit. Some of the essays in this issue demonstrate specific instantiation of these beliefs and advance how they come to be or how they operate. These essays capture present efforts to understand a particular phenomenon of consequence for consumers. Four additional essays are from "thought leaders" whom we invited to capture the state of the field's thinking around particular subareas of extraordinary beliefs.From the outset, we had envisioned organizing the essays in this issue around the obvious paradigms they are situated in, that is, anthropomorphism, magical thinking, superstition, and so on. Much to our surprise and pleasure, a stronger theme emerged that crossed these somewhat arbitrary borders. Rather, each of the essays gathered in this issue reflects the authors' investigation into the functionality of extraordinary thinking, in other words, how such processing serves particular purposes and functions for consumers. Indeed, Vaidyanathan, Aggarwal, and Bakpayev lead us off by presenting a conceptual framework for superstitious behavior explicitly organized by type of functional motivation: instrumental, protective, and social-adjustive. Wan demonstrates that a "functional" match between the purpose of the product and the user's mind-set (social, functional) influences preference for anthropomorphized products. The exploration of mind-set is continued by Park, Kang, and Kim, who document that superstitious thinking serves self-enhancement motives differentially for entity versus incremental theorists. Similarly, Valenzuela, Bonezzi, and Szabo-Douat teach us that self-enhancement behavior is different for those who see karmic rewards: those who believe in karma speak less negatively about others and less positively about themselves, which is the opposite of how the literature previously characterized self-enhancement behavior. It is not just superstition and karma that facilitate self-enhancement. As Chen, Sengupta, and Adaval show, anthropomorphizing a product leads consumers to feel greater vitality and exert better self-control on subsequent decisions. Extraordinary thinking not only serves self-enhancement functions, but can also serve as a mechanism for product enhancement. Indeed, Newman shows us how value is enhanced for animistic objects by building extraordinary connections via narratives.The essay by Dong and Labroo points out that reliance on extraordinary beliefs is not necessarily enhancing. While remaining agnostic as to whether engaging in a superstitious act ultimately results in beneficial or maleficial end states, these authors show that invoking fatalistic notions reverses classic loss aversion, such that consumers become more risk-seeking (risk-averse) in gains (losses). Youn and Awad wade one step deeper in the "dark side" of extraordinary thinking, as they show that narcissists identify with and prefer anthropomorphized narcissistic brands but actively dislike non-anthropomorphized narcissistic brands, which remains an unexplained but interesting unanticipated finding. Clearly there is much we still have to learn about the myriad ways extraordinary beliefs influence our thoughts, our actions, and our relationships. To help facilitate extraordinary learning and in the hopes of generating some answers to seemingly ordinary patterns of behavior (e.g., how can people proceed with daily activities without being paralyzed by fears of contamination as contagion theory might predict?), Dahl, Morales, and Argo propose the theory of property transference. These authors propose amendments to the law of contagion that offer a more nuanced explanation of how these widely held extraordinary beliefs can coexist with ordinary behaviors. Otnes, Zayer, Arias, and Sreekumar bring us full circle back to our realization that the borders among extraordinary beliefs are arbitrary and might be better thought of as existing in the service of higher order functions like connecting, controlling, enchanting, and explaining. This conceptual review reveals just how deeply embedded all these extraordinary beliefs are in our everyday rituals, whether we are behaving as consumers or simply as human beings.Our issue continues with four unique, insightful, and well, extraordinary essays from six expert thought leaders in the field. These scholars were given carte blanche to share with us whatever they wished, whether their insights over their decades of work in the area, their thoughts for the future of the field, or simply "what I always wished I could say but never had the opportunity to." Stuart Vyse took us up on all of this and raised us one with his thoughtful and provocative essay stressing the need for scholars to adopt the goals of consumer welfare and ethical philosophy when studying superstition in the marketplace. Vyse brings our attention to the dysfunction of these not rational beliefs and the potential for consumer exploitation in our zealousness to make the extraordinary ordinary. Nicholas Epley provides us with some wordplay on the ordinariness of these extraordinary beliefs. By defining anthropomorphism, explaining its causes, and helping us understand its consequences, Epley challenges us to recognize the ordinary that gives rise to the extraordinary. He is careful not to confuse ordinary with rational, as are Jane Risen and Tom Gilovich in their exposition of the widespread (might one say ordinary?) beliefs about tempting fate. Risen and Gilovich explain what people mean by tempting fate, examine the processes that are responsible for it, and offer scholars a tool—The Belief in Tempting Fate Scale—that can be used in future research. Our issue concludes with the magic of Carol Nemeroff and Paul Rozin, who take us "back in touch" with magical thinking. Not only do they take us back in their review of contagion theory, they ground us in the present by asking us to consider its potentially transformative consumer applications in domains like the world's food and water supply, and they urge us forward to consider the behavioral impact of magical beliefs on the blurred boundaries between the real-world and imaginal virtual reality domains. Quite skillfully, Nemeroff and Rozin, along with Risen, Gilovich, Epley, and Vyse, shed light on how perfectly rational beliefs can take a turn toward the irrational, how extraordinary can be mistaken for ordinary, and how vigilantly we, as scholars, must reinforce the distinction.At the outset of this editorial, we described extraordinary beliefs as being "amiss." Such a statement may well have irritated some readers. The characterization of magical and pseudoscientific beliefs as somehow being irrational or "less than" scientific beliefs may be seen as elitist, "Western," or shortsighted given the evolution of science. Indeed, our original intention was to call this issue "The Science of Nonscientific Beliefs," but we understood that some extraordinary beliefs are cherished, and questioning them takes on costs akin to those incurred for questioning religious beliefs. People otherwise steeped in logic and scientific principles may defend these beliefs because they feel right, because they serve a function (as noted in the articles here), or because people hope, when hope is in short supply that, just maybe, they really do work. So, we softened our title and the associated language in our call for papers. One has to wonder if, in the interest of scientific advancement and the well-being of consumers, we should have maintained our "nonscientific" characterization of these beliefs. Is a polite, even "hands off" approach to these beliefs stultifying our ability to understand and help consumers? Although we realize that extraordinary beliefs may provide psychological benefits, such as decreasing anxiety or increasing feelings of control, consumers invest substantial time and money on items that cannot work according to known mechanisms based on scientific principles—smudging, healing crystals, magic amulets, statues of saints that if buried just so produce a successful house sale, detoxification diets, magnet therapy, homeopathy, astrology, feng shui, and, yes, possibly even acupuncture. Consumers feel love for products and brands, imbuing them with human characteristics they simply do not possess. Ailing consumers perceive cancer as a human enemy and plan to "kick its ass." Applying the rules of social interaction to nonhuman entities is clearly misplaced, just as believing in the efficacy of magical interventions defies logic, but in some contexts these actions take on the status of the heroic, of the bold, of the "never say die," leading to a social and scientific reluctance to question them—possibly to the detriment of consumers. Yet the field of consumer behavior has sidelined much of this investigation. The literatures on anthropomorphism, superstition, and pseudoscience are relatively new and relatively thin, especially in comparison to the vast literatures on "parent" judgments of causation and categorization. It is possible that such beliefs are marginal—cute, quirky, marginal phenomena—which might explain their limited exploration. However, we would like to leave the field with questions. Have we made these beliefs sacred in a way that makes taking them on counternormative—as outside the bounds of what we are allowed to study? Is questioning people's mistaken causal beliefs, especially when these beliefs are applied by the sick and demoralized, seen as a violation of what is appropriate? Have we made it against the rules to call out the irrational and the silly (cf. Vyse's essay in this issue)? Is the contribution of this issue not only in showcasing the present pieces of research but also in demonstrating the negative—in what wasn't studied in important, day-to-day, consequential consumer behavior? Perhaps that is what is extraordinary. Previous articleNext article DetailsFiguresReferencesCited by Journal of the Association for Consumer Research Volume 3, Number 4October 2018The Science of Extraordinary BeliefsGuest Editors: Pankaj Aggarwal, Lauren Block, Thomas Kramer, and Ann L. McGill Sponsored by the Association for Consumer Research Article DOIhttps://doi.org/10.1086/699972 HistoryPublished online August 29, 2018 © 2018 the Association for Consumer Research. All rights reserved.PDF download Crossref reports no articles citing this article.
3 Zitationen
Neuroanatomy
19992 Zitationen · DOI
Duke Mathematical Journal · 1 Zitationen · DOI
Motivated by work of Lawrence, Venkatesh, and Sawin, we show that non-isotrivial families of subvarieties in abelian varieties have big monodromy when twisted by generic rank-1 local systems. While Lawrence and Sawin discuss the case of subvarieties of codimension 1, our results hold for subvarieties of codimension at least half the dimension of the ambient abelian variety. For the proof, we use a combination of geometric arguments and representation theory to show that the Tannaka groups of intersection complexes on such subvarieties are big.
KSV Verwaltungspraxis eBooks · 1 Zitationen · DOI
Planungs- und Genehmigungsverfahren im Verkehrsbereich dauern in Deutschland zu lange. Um eine aus verschiedenen Gründen erforderliche Beschleunigung von Planungs- und Genehmigungsverfahren zu erreichen, hat daher der nationale Gesetzgeber im Laufe der Zeit - beginnend mit der deutschen Wiedervereinigung - eine Reihe von Gesetzen erlassen und Maßnahmen eingeführt. Diese Gesetze sind jedoch insgesamt nicht durchgehend als unkritisch zu bezeichnen. Vor diesem Hintergrund analysiert die vorliegende Arbeit, inwieweit die von dem Gesetzgeber zur Beschleunigung von Planungs- und Genehmigungsverfahren im Verkehrsbereich eingeführten Maßnahmen auch für diesen Zweck geeignet sind und sich durch die eingeführten Maßnahmen die Dauer von Planungs- und Genehmigungsverfahren verkürzt hat. Dabei konzentriert sie sich auf Ansätze auf rechtlicher Ebene, die sich regelmäßig in Gesetzesvorhaben niederschlagen. Thomas Kramer ist Bachelor of Laws (LL.B.) in der Fachrichtung „Staatlicher Verwaltungsdienst - Allgemeine Verwaltung“ sowie Master of Business Administration (MBA) in der Fachrichtung „Public Management“. Seit dem Jahr 2016 ist er in einer Mittelbehörde des Landes Nordrhein-Westfalen für die Durchführung von Planfeststellungsverfahren im Verkehrs- und Energiewirtschaftsbereich zuständig.
J.B. Metzler eBooks · 1 Zitationen · DOI
Der hier vorliegende Band gilt einem besonderen Abschnitt der Geschichte der deutschsprachigen Kinder- und Jugendliteratur (KJL): ihrer Entwicklung im östlichen Teilstaat des nach 1945 geteilten Deutschland.
J.B. Metzler eBooks · 1 Zitationen · DOI
Ungeachtet des Transportes ideologischer Klischees erfreute sich die Abenteuerliteratur in der DDR größter Beliebtheit. Wie in der gesamten Kinder- und Jugendliteratur spiegeln sich auch und gerade in dieser Gattung die Problemfelder der DDR-Literatur für alle Lebensalter, wobei — wie bei der Abenteuerliteratur insgesamt — die Frequentierung der hier im Überblick dargestellten Gattungsprodukte ohnehin nicht auf jugendliche Leser beschränkt werden kann. Bereits in Versuchen der Definition von Abenteuer und Abenteuerliteratur durch DDR-Autoren wird die Einbindung des Themas in die kulturpolitischen Vorgaben deutlich. Folgende Ausführungen beschränken sich auf Autoren und Werke von Verlagen, deren Schwergewicht und Hauptanliegen in der Edition von Kinder- und Jugendliteratur lag. Somit müssen die — natürlich auch von Jugendlichen mit Begeisterung wahrgenommenen — Texte regelrechter Bestsellerautoren wie Harry Thürk, Wolfgang Schreyer oder Alan Winnington, einem vor der englischen Justiz geflüchteten Briten, deren Hausverlag »Das Neue Berlin« war, unberücksichtigt bleiben.
Journal für die reine und angewandte Mathematik (Crelles Journal) · DOI
Abstract We show that, under mild assumptions, the Fano surfaces of lines on smooth cubic threefolds are the only smooth subvarieties of abelian varieties whose Tannaka group for the convolution of perverse sheaves is an exceptional simple group. This in particular leads to a considerable strengthening of our previous work on the Shafarevich conjecture. A key idea is to control the Hodge decomposition on cohomology by a cocharacter of the Tannaka group of Hodge modules, and to play this off against an improvement of the Hodge number estimates for irregular varieties by Lazarsfeld–Popa and Lombardi.
St. Cordula und die Kölner Johanniter. Zu Rolle und Funktion weiblicher Heiliger und ihrer Reliquien
2023Ordines Militares Colloquia Torunensia Historica · DOI
St. Cordula and the Cologne Johanniter. On the role and function of female saints and their relics The Hospitaller commandery in Cologne not only had an extraordinarily rich collection of relics, it was almost unique in having relics found on its own grounds. In 1278 and 1327, remains of several saints were collected, which were attributed to the entourage of St Ursula and the 11.000 virgins. These were not particularly high-ranking saints, but the Hospitallers knew how to cleverly use the findings to secure a prominent place for their house in the legend, which was very well known throughout Europe. With the relics, especially those of St Cordula, whose discovery was staged in a hagiographic text, the Hospitaller commandery also succeeded in placing itself in Cologneʼs very dense sacral landscape and establishing connections far beyond the city and the Rhineland. Especially in difficult situations, the finding of the relics offered members of the order and the social environment of the commandery’s self-assurance, as they confirmed the promise of salvation. Last but not least, pilgrims and donations brought economic benefits. This article demonstrates that a particularly high-ranking relic or saint was not necessarily needed to be successful. Falling back on those who fit into a narrative that offered different points of contact could be just as advantageous in securing support and gaining influence.
arXiv (Cornell University) · DOI
Motivated by recent work of Lawrence-Venkatesh and Lawrence-Sawin, we show that non-isotrivial families of subvarieties in abelian varieties have big monodromy when twisted by generic rank one local systems. While Lawrence-Sawin discuss the case of subvarieties of codimension one, our results hold for subvarieties of codimension at least half the dimension of the ambient abelian variety. For the proof, we use a combination of geometric arguments and representation theory to show that the Tannaka groups of intersection complexes on such subvarieties are big.
KSV Verwaltungspraxis eBooks · DOI
KSV Verwaltungspraxis eBooks · DOI
Anhang
2021KSV Verwaltungspraxis eBooks · DOI
KSV Verwaltungspraxis eBooks · DOI
1. Einführung
2021KSV Verwaltungspraxis eBooks · DOI
Nachrichten aus der Chemie · DOI
Abstract Ein Anbieter textiler Verstärkungsmaterialien und ein Reifenhersteller haben im Februar den Patentpool Cokoon gestartet. Damit haben sie einen neuen Ansatz zur Kooperation entwickelt, ohne dass es zu Konflikten mit den Schutzrechten kam. Solche Pools gab es bisher vor allem in der Informationstechnik.
Science studies · DOI
Science studies · DOI
Science studies · DOI
Science studies · DOI
Science studies · DOI
Science studies · DOI
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GRK 2965: Von Geometrie zu Zahlen: Moduli, Hodge Theorie, rationale Punkte
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- Prof. Dr. Thomas Krämer
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- Mathematisch-Naturwissenschaftliche Fakultät
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- Institut für Mathematik
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- Algebra und Zahlentheorie (J)
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