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imaginatio oder inventio
(2005)
Der Aufsatz analysiert die Begriffe der imaginatio und inventio und deren Verhältnis zueinander in den Poetiken von George Puttenham („Arte of English Poesie“, 1589), Philip Sidney („Defense of Poetry“, 1595) und William Temple („Analysis tractationis de poesi“, um 1595). Anders als zu erwarten wird in allen drei Fällen das dichterische Vermögen nicht im Sinne eines modernen Begriffs von kreativer Phantasie gedeutet. Weil der Begriff der imaginatio eine gefährliche Nähe zu den Wahnvorstellungen eines Verrückten impliziert, es Puttenham und Sidney aber vor allem um eine soziale Aufwertung der Dichtung als einer höfisch angemessenen Tätigkeit geht, wird der Begriff der imaginatio nur in einem sehr eingeschränkten Sinne verwendet. Das impliziert auch eine Ablehnung des Begriffs eines Enthusiasmus oder furor poeticus, also einer göttlichen Inspiration des Dichters, wie er insbesondere mit dem Neuplatonismus Ficinos assoziiert wurde.
Die „Poetica“ Tommaso Campanellas ist Ausdruck einer starken Rationalisierung und didaktischer Instrumentalisierung der Dichtung. Diese Rationalisierung kann als Reaktion auf die Inspirationstheorien von Marsilio Ficino und Pietro Pomponazzi erklärt werden, die beide (mit je ganz unterschiedlichen Begründungen) den poetischen Enthusiasmus neben die Offenbarungen des Propheten gestellt und damit den ausschließlichen Offenbarungsanspruch der Prophetie herausgefordert hatten.
In the estimate of dispersion with the help of wavelet analysis considerable emphasis has been put on the extraction of the group velocity using the modulus of the wavelet transform. In this paper we give an asymptotic expression of the full propagator in wavelet space that comprises the phase velocity as well. This operator establishes a relationship between the observed signals at two different stations during wave propagation in a dispersive and attenuating medium. Numerical and experimental examples are presented to show that the method accurately models seismic wave dispersion and attenuation
Functional groups with diverse responses to environmental factors sum to produce communities with less temporal variability in their biomass than those lacking this diversity. The detection of these compensatory dynamics can be complicated by a spatio-temporal alternation in the environmental factors limiting growth (both abiotic and biotic), which restricts the occurrence of compensatory dynamics to certain periods or locations. Hence, resolving the spatio- temporal scale may uncover important spatial and/or temporal components in community variability. Using long-term data from Lake Constance (Bodensee), we find that a reduction in grazing pressure and relaxed competition for nutrients during winter and spring generates coherent dynamics among edible and less edible phytoplankton. During summer and fall, when both grazing pressure and nutrient limitation are present, edible and less edible phytoplankton exhibit compensatory dynamics. This study supports recent work suggesting that both abiotic and biotic interactions promote compensatory dynamics and to our knowledge, this is the first example of a system where compensatory and coherent dynamics seasonally alternate.
Handbuch Sportspiel
(2005)
The multiplication and antibody production of murine hybridoma cells cultured on five different polymer membranes were tested and compared with conventional tissue culture polystyrene (TCPS). Membranes were prepared from polyacrylonitrile (PAN) and acrylonitrile copolymerized with N-vinylpyrrolidone (NVP20, NVP30), Na-methallylsulfonate (NaMAS) and N-(3-amino-propyl-methacrylamide-hydrochloride) (APMA). Cell number and antibody concentration were quantified as criteria for viability and productivity. Adhesion of hybridoma cells was characterized by vital and scanning electron microscopy. The results suggest that a strong adhesion of cells, observed on APMA and TCPS, increased cell growth but reduced monoclonal antibody production. In contrast membranes with lowered adhesivity such as NVP20 provided favourable conditions for monoclonal antibody production. In addition it was shown that this membrane also possessed a minor fouling as indicated by the low decrease of water flux across the membrane after protein adsorption. It was concluded that NVP20 could be a suitable material for the development of hollow fibre membranes for bioreactors.