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Institut
Der Beitrag geht (1) auf zentrale Aspekte neoliberaler Wirtschaftspolitik ein, (2) damit verbundene branchenspezifische Strategien und Ideologiemuster sowie (3) auf individuell übernommene Denkfiguren zur marktförmigen Selbstoptimierung. Abschließend werden (4) Alternativen auf kommunaler, wirtschafts- und sportpolitischer Ebene aufgezeigt.
Neuroscientists want to inspect the data their simulations are producing while these are still running. This will on the one hand save them time waiting for results and therefore insight. On the other, it will allow for more efficient use of CPU time if the simulations are being run on supercomputers. If they had access to the data being generated, neuroscientists could monitor it and take counter-actions, e.g., parameter adjustments, should the simulation deviate too much from in-vivo observations or get stuck.
As a first step toward this goal, we devise an in situ pipeline tailored to the neuroscientific use case. It is capable of recording and transferring simulation data to an analysis/visualization process, while the simulation is still running. The developed libraries are made publicly available as open source projects. We provide a proof-of-concept integration, coupling the neuronal simulator NEST to basic 2D and 3D visualization.
Quantum systems are typically subject to various environmental noise sources. Treating these environmental disturbances with a system-bath approach beyond weak coupling, one must refer to numerical methods as, for example, the numerically exact quasi-adiabatic path integral approach. This approach, however, cannot treat baths which couple to the system via operators, which do not commute. We extend the quasi-adiabatic path integral approach by determining the time discrete influence functional for such non-commuting fluctuations and by modifying the propagation scheme accordingly. We test the extended quasi-adiabatic path integral approach by determining the time evolution of a quantum two-level system coupled to two independent baths via non-commuting operators. We show that the convergent results can be obtained and agreement with the analytical weak coupling results is achieved in the respective limits.
We derive a Magnus expansion for a frequency chirped quantum two-level system. We obtain a time-independent effective Hamiltonian which generates a stroboscopic time evolution. At lowest order the according dynamics is identical to results from using a rotating wave approximation. We determine, furthermore, also the next higher-order corrections within our expansion scheme in correspondence to the Bloch-Siegert shifts for harmonically driven systems. Importantly, our scheme can be extended to more complicated systems, i.e., even many-body systems.
Recent experimental results showing atypical nonlinear absorption and marked deviations from well known universality in the low temperature acoustic and dielectric losses in amorphous solids prove the need for improving the understanding of the nature of two-level systems (TLSs) in these materials. Here we suggest the study of TLSs focused on their properties which are nonuniversal. Our theoretical analysis shows that the standard tunneling model and the recently suggested two-TLS model provide markedly different predictions for the experimental outcome of these studies. Our results may be directly tested in disordered lattices, e.g KBr:CN, where there is ample theoretical support for the validity of the two-TLS model, as well as in amorphous solids. Verification of our results in the latter will significantly enhance understanding of the nature of TLSs in amorphous solids, and the ability to manipulate them and reduce their destructive effect in various cutting edge applications including superconducting qubits.
Jeder angehende Ökonom muss gesamtwirtschaftliche Zusammenhänge verstehen und deuten können. Dieses Buch vermittelt dafür das notwendige Know-how. Die Autoren beleuchten die Volkswirtschaftlichen Gesamtrechnungen, das Phänomen Wirtschaftswachstum, den Arbeitsmarkt und die monetären Märkte.
Darauf aufbauend stellen sie zentrale Modelle der Volkswirtschaftslehre dar und wenden sie auf wirtschaftspolitische Problemstellungen an. Jedes Kapitel wird durch Lernziele eingeleitet und durch eine kompakte Zusammenfassung abgeschlossen. Im Text finden sich Fallbeispiele, Abbildungen und hervorgehobene Definitionen.
Zahlreiche Übungsaufgaben ermöglichen die Überprüfung und Vertiefung des Erlernten. Das Buch richtet sich an Studierende der Betriebs- und Volkswirtschaftslehre an Fachhochschulen und Universitäten. Fazit: Durch seinen didaktischen Aufbau und den zahlreichen anschaulichen Beispielen eignet sich dieses Buch hervorragend als vorlesungsbegleitende Lektüre und zur Prüfungsvorbereitung.
Rationale Klimaschutzpolitik
(2008)