Sökning: "structure"
Visar resultat 21 - 25 av 11800 avhandlingar innehållade ordet structure.
21. Regressor and Structure Selection : Uses of ANOVA in System Identification
Sammanfattning : Identification of nonlinear dynamical models of a black box nature involves both structure decisions (i.e., which regressors to use and the selection of a regressor function), and the estimation of the parameters involved. LÄS MER
22. Geochronology of impact structures - constraining syn- and post-impact processes using the 40Ar/39Ar and U-Pb techniques
Sammanfattning : The discovery, at the beginning of the 20th century, that elements can transform into other elements, due to the spontaneous decay of an instable to a stable atomic nuclei, gave rise to a powerful source for age information in many fields of earth science. For impact structures, it is crucial to establish well-defined and precise ages in order to understand how impact events affect the Earth’s geo and biosphere and also with regard to possible future events that can have devastating effects on our civilization. LÄS MER
23. The Half-Vanished Structure : Hawthorne's Allegorical Dialectics
Sammanfattning : Invoking Coleridge’s distinction between allegory and symbol, this dissertation makes the case for allegory and symbolism as two divergent perceptual modes. Allegory, it argues, stresses the necessity of perceiving the ideal through the mediation of negation (death), while symbolism flaunts the notion that the ideal can be immediately perceived in the inef-fable realm of the emotions. LÄS MER
24. Genetic structure and dispersal in plant populations
Sammanfattning : This thesis focuses on the spatial structure and methods to identify spatial structure in plants. Methods that investigate genetic structure can mainly be divided into equilibrium methods that reveal summed dispersal over many generations, and cluster methods, that reveal more recent dispersal events. LÄS MER
25. Quantum Chemical Interpretation of Protein Crystal Structure
Sammanfattning : An initial model in the crystallographic structure determination process, usually contains many errors. To produce an accurate model, one must carry out several cycles of crystallographic refinement. LÄS MER