Thomas Schimming

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A retrospective study recently showed that oocytes presenting with a high birefringence of the inner zona layer were more often associated with conception cycles. To further investigate these findings, a prospective study was conducted between September 2005 and September 2006 including intracytoplasmic sperm injection (ICSI) cycles presenting with at least(More)
| For chaos communication schemes, one chooses typically a particular demodulation principle , which is then evaluated in terms of bit error rate for a given channel. In this approach we start from the maximum likelihood decision criteria and derive an optimal estimator for initial conditions. We assume that the information to be transmitted is coded in the(More)
Recent studies using polarized light microscopy revealed a correlation between the presence of a spindle in human metaphase II meiotic oocytes and the fertilization rate following intracytoplasmic sperm injection (ICSI). Using a new spindle imaging system, it was possible to visualize the spindle image and the conventional light microscopic view of the(More)
It has previously been demonstrated that zona pellucida imaging of human oocytes using polarized light microscopy is a clinically applicable method for the noninvasive assessment of oocyte quality. This study was designed to investigate whether zona pellucida characteristics of bovine oocytes and zygotes in polarized light may similarly serve as a useful(More)
An extended GC-MS study of 129 convolvulaceous species belonging to 29 genera (all 12 tribes) including the results of a previous survey (65 spp.) revealed the occurrence of one to six polyhydroxy alkaloids of the nortropane type (calystegines) in 62 species belonging to 22 genera of all tribes except the unique parasitic Cuscuteae. The large genus Ipomoea(More)
In this paper the modeling of a signal by a chaotic generator with respect to a specified signal statistic will be considered. To accomplish that, the considered class of n-dimensional piecewise linear Markov generators will first be analyzed analytically, yielding an algebraic expression for the statistical quantity in question. Based on this analytical(More)