Kurzfassung: Kognitive Agenten müssen selbständig Strukturen ihrer Umgebung aufdecken und für die Verhaltenssteuerung nutzbar machen können. Um dieses Problem zu lösen, manipuliert der Agent die Umgebungsobjekte, nimmt die Konsequenzen dieser Operationen wahr und bildet diese Vorgänge in einem Modell der externen Realität (innere Bühne) nach. Solch ein zyklisches Verhalten findet man sowohl bei...

This study was conducted to clarify the degree to which a master cast needs to be carved to obtain a posterior palatal seal according to Swenson, based on a comparison among four dental practitioners. Sections of the casts with the seal scraped were made, and an optical microscope was used to measure the sagittal and vertical dimensions. It was found that the sagittal dimension may show a small...

The cobamide coenzymes’ are unstable in the presence of alkaline cyanide. This decomposition by cyanide has been envisaged as a nucleophilic displacement reaction which gives rise to dicyanocobalamin, adenine, and the cyanohydrins of 2,3dihydroxy-A4-pentenal (1, 2). In the case of the simple alkylcobalamins, cyanide decomposition proceeds very slowly or not at all, presumably because the alkyl ...

Professor J. D. Campbell, E. Garrett*, L. A. Headrick, M. C. Hosokawa*, M. LeFevre*, D. R. Mehr*, D. Parker-Oliver*, E. Ringdahl*, W. Steinmann, J. Stevermer, D. C. Vinson*, H. A. Williamson*, S. C. Zweig* Associate Professor J. Belden, D. Cravens*, K. Everett*, A. B. Fitzsimmons, K. Y. Kane*, J. Kapp*, S. Kinkade*, K. Kochendorfer*, R. Koopman*, E. J. Lindbloom*, C. Reust*, D. Wen*, A. Whaley-...

BACKGROUND/PURPOSE The purpose of this study was to review the authors' 25-year experience with redo pull-through procedures for Hirschsprung's disease including surgical technique and long-term outcome. METHODS From 1974 to now, over 325 patients with Hirschsprung's disease have been treated at C.S. Mott Children's Hospital. This includes 30 patients referred after an unsuccessful pull-throu...

We compare different procedures for combining fixed-order tree-level matrixelement generators with parton showers. We use the case of W-production at the Tevatron and the LHC to compare different implementations of the so-called CKKW and MLM schemes using different matrix-element generators and different parton cascades. We find that although similar results are obtained in all cases, there are...

We present here a study of event generators for the hadronic production of Wγ . We compare a NLO Wγ matrix element generator with the leading order calculation in Pythia . A matching scheme between a next-to-leading order Wγ matrix element generator by Baur et. al. and the Pythia parton shower is presented. The NLO package produces Wγ +0 jet and Wγ +1jet final states in the hard scattering and ...

Nature has evolved efficient strategies to synthesize complex mineralized structures that exhibit exceptional damage tolerance. One such example is found in the hypermineralized hammer-like dactyl clubs of the stomatopods, a group of highly aggressive marine crustaceans. The dactyl clubs from one species, Odontodactylus scyllarus, exhibit an impressive set of characteristics adapted for survivi...