Development of biocompatible material based on zirconium oxide

Composite materials based on polymers and ceramics are one of the most promising materials in medical application. Special properties of porous materials allow solving the most complicated problems in various fields of biomedicine. Physical-chemical properties of the composites depend on the porosity of materials. Synthesis of the porous materials based on zirconium oxide and polylactide is the aim of this work

Sensomotoric Correlations As Basis For a Model Of Motor Control

Voluntary acts are assumed to be initiated by their anticipated sensoric consequences. This old assumption (James, 1890/1981) was taken up recently by new models of Artificial Life and Psychology which share the notion of a close linkage between perception and action. The models of both disciplines stress the importance of the ability of a cognitive system to act and the importance of being situated in an environment (for an overview: Steininger, 1999). Whereas psychological approaches set action control at a high cognitive level, AL models refer mostly to its low level functions. Nevertheless, the combination of the ideas of both disciplines seems promising. The Common-Coding Approach of Action Control Two assumptions form the starting point of the model presented here: (1) There is a common domain of representation for perception and action (Common Coding). (2) Actions are initiated by codes that represent their - perceptual - effects (principle of effect control of actions). Both ..

Gestures During Overlapping Speech in multimodal Human-Machine Dialogues

A dialogue system has to deal with the problem of interruptions by the user, e.g. changes of requests (called barge-in). This contribution is concerned with this problem in the special case of the multimodal dialogue system SmartKom 1 . How are gestures used during such interruptions if they are utilized at all? To answer this question we analyzed a number of human-machine dialogues qualitatively. The analysis showed that most overlap situations were not accompanied by gestures at all. In the remaining instances the gestures were almost never "interactional" gestures, but mostly "unidentifiable" and "emotional" ones. We allocated the overlap situations accompanied by gestures to several subcategories of barge-in, pointed out the peculiarities of the gestures in the different cases and discussed their suitability as indicators for the dialogue system. Although from a small-scale in depth analysis no generalizations can be drawn, valuable insights for further investigation have been won. Most importantly it can be noted that the dynamic features of gestures seem far more promising as indicators of dialogue situations that need to be taken care of by the dialogue system than their static features

User-State Labeling Procedures For The Multimodal Data Collection Of SmartKom

This contribution deals with the user-state labeling procedures of a multimodal data corpus that is created in the SmartKom project. The goal of the SmartKom project is the development of an intelligent computer-user interface that allows almost natural communication with an adaptive and self-explanatory machine. The system does not only allow input in the form of natural speech but also in the form of gestures. Additionally, facial expressions are analyzed. For th

Possible Lexical Indicators for Barge-In / Barge-Before in Multimodal Man-Machine-Communication

In the SmartKom project an intelligent computer-user interface which being deal with various kinds of oral or physical input is developed. The aim of SmartKom is to allow a natural form of communication within manmachine interaction. One proble

User-State Labeling Procedures for the Multimodal Data Collection of SmartKom

This contribution deals with the user-state labeling procedures of a multimodal data corpus that is created in the SmartKom project. The goal of the SmartKom project is the development of an intelligent computer-user interface that allows almost natural communication with an adaptive and self-explanatory machine. The system does not only allow input in the form of natural speech but also in the form of gestures. Additionally, facial expressions are analyzed

Possible Lexical Indicators for Barge-In / Barge-Before in a multimodal Man-Machine-Communication

In the SmartKom project an intelligent computer-user interface which being deal with various kinds of oral or physical input is developed. The aim of SmartKom is to allow a natural form of communication within man-machine interaction. One proble