of Dissertation presented to COPPE/UFRJ as a partial fulfillment of the requirements for the degree of Master of Science (M.Sc.) PROBABILISTIC POINT MATCHING Gustavo Thebit Pfeiffer

The detailed evolution of the magnitude of the local Jahn-Teller (JT) distortion in La(1-x)Ca(x)MnO3 is obtained across the phase diagram for 0< or =x< or =0.5 from high-quality neutron diffraction data using the atomic pair distribution function method. A local JT distortion is observed in the insulating phase for all Ca concentrations studied. However, in contrast with earlier local structure...

year among a certain number of livinginhabitants of a community or state. Of it is usual to calculate this proportion per 1,000 inhabitants. The birth-figure and the death-figure are of opposite significance in estimating the movement of a population. The smaller the birth-figure and the larger the death-figure> the more favourable is it for development, as then the increase by the births occur...

Pfeiffer contains a population of fractals which has been evolving continuously for more than three years. The animations are developed from embryos using a Lindenmayer grammar (LSystem). These open generative representations potentially allow gene duplication and the evolution of higher order genetic operators and might be a step towards the emergence of social intelligence in swarms of artifi...

Stefan Pfeiffer, Gregor Weber (eds.), Gesellschaftliche Spaltungen im Zeitalter des Hellenismus (4.–1. Jahrhundert v. Chr.), (Oriens et Occidens –35), Franz Steiner Verlag, Stuttgart 2021, 222 pp.; ISBN 978-3-515-13079-0

In this Communication we present the first theoretical/numerical treatment of nonadiabatic coupling terms (NACT) that originate from the Renner-Teller (RT) model, namely, those that follow from the splitting of an electronic level of a linear molecule when it becomes bent. These two newly formed states are characterized by different symmetries and are designated as A and B. Our main findings: (...

High-pressure optical-absorption measurements performed in CuWO(4) up to 20 GPa provide experimental evidence of the persistence of the Jahn-Teller (JT) distortion in the whole pressure range both in the low-pressure triclinic and in the high-pressure monoclinic phase. The electron-lattice couplings associated with the e(g)(E⊗e) and t(2g)(T⊗e) orbitals of Cu(2+) in CuWO(4) are obtained from cor...