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Das Denken der 'neuen' Form setzt sich bei Cassirer aus der rationalen und der sinnlichen Erkenntnis zusammen. Den Formbegriff der rationalen Erkenntnis gewinnt er mithilfe der Philosophie, den der sinnlichen Erkenntnis aus der Kunst. Ist für ersteren vor allem Leibniz wichtig geworden, beruft er sich bei letzterem explizit auf Goethe. Im Folgenden werde ich versuchen, beide Erkenntnisweisen nachzuvollziehen, um die These herzuleiten, dass Cassirer keine Hierarchisierung zwischen Begriff und Bild vornimmt.
Einführung
(2018)
Warburg wirkte auch über den engeren Kreis der Kulturwissenschaftlichen Bibliothek Warburg hinaus. Mit Walter Benjamins Werk, Franz Dornseiffs Onomasiologie oder Ernst Robert Curtius' an das 'Nachleben der Antike' anknüpfender 'historischer Topik' seien nur einige der Arbeiten über Sprache genannt, die von Warburgs kunstwissenschaftlichen Ideen inspiriert waren. Insbesondere Curtius' Arbeiten – und das berührt unsere Frage nach der Epochenschwelle – sind dabei als Ansatz wahrgenommen worden, überhistorische Denkfiguren und geistesgeschichtliche Kontinuitäten gegen die Gefahr des Historismus und von Brüchen im Traditionszusammenhang aufzuzeigen und damit Warburgs 1912 in Rom verkündetes Programm aufzunehmen, durch "ikonologische Analyse", die sich durch grenzpolitische Befangenheit nicht davor abschrecken lässt, Antike, Mittelalter und Neuzeit als zusammenhängende Epoche anzusehen.
Wenn es die Aufgabe einer Ikonologie der Architektur ist, das Verstehen "des Bauwerks als Sinnträger" zu befördern, unter anderem also die Frage zu beantworten, was "den Menschen [...] diese oder jene Form bedeutet" hat, dann kann versuchsweise 'Monumentalität' ein Suchbegriff sein, der geeignet ist, der ikonologischen Bedeutung von Bauten näher auf die Spur zu kommen. Denn hier geht es um symbolische Aufladung, die etwas entstehen lässt, das Martin Warnke einmal "Bedeutungsarchitektur" nannte. Doch der Begriff ist belastet. Historisch galt Monumentalität in der Architektur schon nach dem Ersten Weltkrieg und den Exzessen des Historismus als obsolet; die Klassische Moderne zentrierte sich um ganz andere Begriffe wie den der Funktion. Monumentalität als Phänomen schien verschwunden, und der Funktionalismus brauchte keine Ikonologie. Nur so exotische Projekte wie das Neu-Delhi von Edwin Lutyens und später die unsäglichen Monumentalbauten der europäischen Diktaturen waren noch monumental. Doch plötzlich wurde an unerwarteter Stelle, nämlich aus dem Zentrum der modernen Bewegung selbst, deren Protagonisten im Lauf der 1930er Jahre aus politischen Gründen vielfach in die USA emigriert waren, und zudem zu einem auf den ersten Blick irritierenden Zeitpunkt die Diskussion neu eröffnet. Niemand Geringeres nämlich als Sigfried Giedion, der Chefideologe der Moderne, startete einen entsprechenden Vorstoß. Zusammen mit José Luis Sert und Fernand Léger verfasste er 1943 seine 'Nine Points on Monumentality'.
In der rezensierten Monographie gelingt es, "New Public Management" als strategisches und politisches Projekt auszudeuten. Die Konsequenzen für die Liegenschaftspolitik können fundiert dargelegt werden. In der Rezension wird eine Einordnung in die bisherige Forschung sowie eine kritische Würdigung der rezensierten Arbeit versucht.
In mammalian species, including humans, the hippocampal dentate gyrus (DG) is a primary region of adult neurogenesis. Aberrant adult hippocampal neurogenesis is associated with neurological pathologies. Understanding the cellular mechanisms controlling adult hippocampal neurogenesis is expected to open new therapeutic strategies for mental disorders. Microglia is intimately associated with neural progenitor cells in the hippocampal DG and has been implicated, under varying experimental conditions, in the control of the proliferation, differentiation and survival of neural precursor cells. But the underlying mechanisms remain poorly defined. Using fluorescent in situ hybridization we show that microglia in brain express the ADP-activated P2Y13 receptor under basal conditions and that P2ry13 mRNA is absent from neurons, astrocytes, and neural progenitor cells. Disrupting P2ry13 decreases structural complexity of microglia in the hippocampal subgranular zone (SGZ). But it increases progenitor cell proliferation and new neuron formation. Our data suggest that P2Y13 receptor-activated microglia constitutively attenuate hippocampal neurogenesis. This identifies a signaling pathway whereby microglia, via a nucleotide-mediated mechanism, contribute to the homeostatic control of adult hippocampal neurogenesis. Selective P2Y13R antagonists could boost neurogenesis in pathological conditions associated with impaired hippocampal neurogenesis.
How demanding and consistent is the 2018 stress test design in comparison to previous exercises?
(2018)
Bank regulators have the discretion to discipline banks by executing enforcement actions to ensure that banks correct deficiencies regarding safe and sound banking principles. We highlight the trade-offs regarding the execution of enforcement actions for financial stability. Following this we provide an overview of the differences in the legal framework governing supervisors’ execution of enforcement actions in the Banking Union and the United States. After discussing work on the effect of enforcement action on bank behaviour and the real economy, we present data on the evolution of enforcement actions and monetary penalties by U.S. regulators. We conclude by noting the importance of supervisors to levy efficient monetary penalties and stressing that a division of competences among different regulators should not lead to a loss of efficiency regarding the execution of enforcement actions.
A new governance architecture for european financial markets? Towards a european supervision of CCPs
(2018)
Does the new European outlook on financial markets, as voiced by the EU Commission since the beginning of the Capital Market Unions imply a movement of the EU towards an alignment of market integration and direct supervision of common rules? This paper sets out to answer this question for the case of common supervision for Central Counterparties (CCPs) in the European Union. Those entities gained crucial importance post-crisis due to new regulation which requires the mandatory clearing of standardized derivative contracts, transforming clearing houses into central nodes for cross-border financial transactions. While the EU-wide regulatory framework EMIR, enacted in 2012, stipulates common regulatory requirements, the framework still relies on home-country supervision of those rules, arguably leading to regulatory as well as supervisory arbitrage. Therefore, the regulatory reform to stabilize the OTC derivatives market replicated at its center a governance flaw, which had been identified as one of the major causes for the gravity of the financial crisis in the EU: the coupling of intense competition based on private risk management systems with a national supervision of European rules. This paper traces the history of this problem awareness and inquires which factors account for the fact that only in 2017 serious negotiations at the EU level ensued that envisioned a common supervision of CCPs to fix the flawed system of governance. Analyzing this shift in the European governance architecture, we argue that Brexit has opened a window of opportunity for a centralization of supervision for CCPs. Brexit aligns the urgency of the problem with material interests of crucial political stakeholder, in particular of Germany and France, providing the possibility for a grand European bargain.
Improving financial conditions of individuals requires an understanding of the mechanisms through which bad financial decision-making leads to worse financial outcomes. From a theoretical point of view, a key candidate inducing mistakes in financial decision-making are so called present-biased preferences, which are one of the cornerstones of behavioral economics. According to theory, present-biased households should behave systematically different when it comes to consumption and saving decisions, as they should be more prone to spending too much and saving too little.
In this policy letter we show how high frequency financial transaction data available in digitized form allows to precisely categorize individual financial-decision making to be present-biased or not. Using this categorization, we find that one out of five individuals in our sample exhibits present-bias and that this present-biased behavior is associated with a stronger use of overdrafts. As overdrafts represent a particularly expensive way of short-term borrowing, their systematic use can be interpreted as a measure of suboptimal financial-decision making. Overall, our results indicate that the combination of economic theory and Big Data is able to generate valuable insights with applications for policy makers and businesses alike.
This paper presents an imaging radar system for structural health monitoring (SHM) of wind turbine blades. The imaging radar system developed here is based on two frequency modulated continuous wave (FMCW) radar sensors with a high output power of 30 dBm. They have been developed for the frequency bands of 24,05 GHz-24,25 GHz and 33.4 GHz-36.0 GHz, respectively. Following the successful proof of damage detection and localization in laboratory conditions, we present here the installation of the sensor system at the tower of a 2 MW wind energy plant at 95 m above ground. The realization of the SHM-system will be introduced including the sensor system, the data acquisition framework and the signal processing procedures. We have achieved an imaging of the rotor blades using inverse synthetic aperture radar techniques under changing environmental and operational condition. On top of that, it was demonstrated that the front wall and back wall radar echo can be extracted from the measured signals demonstrating the full penetration of wind turbine blades during operation.
Dysregulation of blood sphingolipids is an emerging topic in clinical science. The objective of this study was to determine preanalytical biases that typically occur in clinical and translational studies and that influence measured blood sphingolipid levels. Therefore, we collected blood samples from four healthy male volunteers to investigate the effect of storage conditions (time, temperature, long-term storage, freeze–thaw cycles), blood drawing (venous or arterial sampling, prolonged venous compression), and sample preparation (centrifugation, freezing) on sphingolipid levels measured by LC-MS/MS. Our data show that sphingosine 1-phosphate (S1P) and sphinganine 1-phosphate (SA1P) were upregulated in whole blood samples in a time- and temperature-dependent manner. Increased centrifugation at higher speeds led to lower amounts of S1P and SA1P. All other preanalytical biases did not significantly alter the amounts of S1P and SA1P. Further, in almost all settings, we did not detect differences in (dihydro)ceramide levels. In summary, besides time-, temperature-, and centrifugation-dependent changes in S1P and SA1P levels, sphingolipids in blood remained stable under practically relevant preanalytical conditions.