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K Ratzke

Publications and source records attributed to K Ratzke.

5 recordsLinked to original sources
PubMed2000

Evidence of highly collective Co diffusion in the whole stability range of Co-Zr glasses

Using a radiotracer technique, we have measured the isotope effect E = dln(D)/dln(m(1/2)) of Co diffusion in CoxZr1-x glasses for 0. 31</=x</=0.86. E is close to zero (E = 0+/-0.1) in the whole range, covering 3 orders of magnitude in the diffusivity, despite the existence of large activation volumes. These results strongly suggest a highly collective diffusion mechanism to be a quite general phenomenon in metallic glasses and point to diffusion via delocalized thermal effects at certain compositions.

Journal Article↗
PubMed1997

[Aggression and violence in children in different contexts].

Starting with the hypothesis that children's aggressive and potentially violent behavior is the climax of escalating conflicts that cannot be expressed or showed in any other way, we analyse, in the following article, the conditions from which these behavior pattern arise. We have focused on the following areas; the individual, the family, the school and society, and we have tried to show how the development of children's aggressive behavior is determined by the problem constellations in these different contexts. Insecure and disorganised early bonding experiences and/or dysfunctional family relationship patterns combined with parental upbringing methods that support or condone aggressive behavior, can lead to children having fewer resources or social skills available than their peers in kindergarten and school. This may result in conflict and lack of social integration in these institutions.

Adolescent↗
PubMed1997

[FAUSTLOS--a curriculum for promoting social competence and preventing aggressive and violent behavior in children].

FAUSTLOS is a curriculum that has been developed for the prevention of aggression and potentially violent behavior in children in nursery and primary school. A lack of social skills is regarded as one of the fundamental causes that deteriorates problem and conflict solving. FAUSTLOS is the German version of an American program called Second Step that has been developed by the Committee for Children in Seattle and has been successfully put into practice in several American states over the last eight years. The project "Kinder und Gewalt" has adapted it for the German speaking countries. FAUSTLOS is at present in its pilot phase. The following is a general survey of the inception, contents and methods of the curriculum and the planning and execution of the pilot phase.

Aggression↗