Der vorliegende Beitrag gibt einen Überblick über den sich momentan vollziehenden Wandel der Wissenserschließung und –organisation. Nach einer Einführung in die klassischen Methoden und Instrumente werden neue Ansätze vorgestellt, die sich durch eine starke Partizipation der Nutzer im Erschließungsprozess auszeichnen. Auf Grundlage einer Abwägung der Herausforderungen und Chancen wird ein Ausbl...

Since the introduction of metamorphosis grammars (MGs) 'Colmerauer. 1978). with their associated type 0-like grammar rules, there has been a desire to allow more general rule formats in logic grammars Gaps, which refer to strings of unspecified symbols, were added to the MG rule, resulting in extraposition grammars (XGs) (Pereira, 1981) and gapping grammars (GGs) (Dahl and Abramson, 1984). Unre...

The archivation of ancient vessel-fragments is a time consuming but important task for archaeologists. The basis for classification and reconstruction is the profile which is the cross-section of the fragment in the direction of the rotational axis of symmetry. Hence the position of a fragment (orientation) on a vessel is important. In this work the estimation of the axis of rotation out of ran...

Prediction markets,1 which allow participants to place bets on the probability of a particular event, have been used with great success in the election context. Virtually ubiquitous during the 2008 election, prediction markets were used to forecast the chances of a particular candidate winning the election, and were often used by Internet pundits to keep “score” of the polls throughout the run-...

cytogenetic studies were performed on 150 cases of down's syndrome (ds) in iran. the standard trisomy 21 was found in 132 (88 % ) and translocation-trisomy 21 (+21) in 18 (12%) patients, i.e., t(21,21) in 1(0.63%) and mosaicism in 17(11.33%) cases. the comparison of the frequencies for mosaicism between different populations such as denmark, hungary, egypt, iraq, india, australia and iran ...

abstract purpose - the aim of this paper is to describe the population ecology theory through fractal thinking, an emergent human operating system that is creative, adaptive, healthy, and evolutionary; furthermore, a parallel is drawn between the population ecology model and the fractal structure. top-down hierarchies are typically characterized by command and control systems of the authority t...