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Reverential fear and consent to marriage

According to medieval canon law, a marriage could be declared invalid if the consent had been given through force or fear. This ruling was a natural consequence of the insistence on free consent as the only requirement for a valid marriage. It did, however, entail a number of both practical and theoretical problems. It could be difficult to prove force and fear within the family, but also to defin

Biological diversity, attitudes, and brain waves

Conflicts between human activities and the management and conservation of the biological diversity are becoming apparent in all European landscapes. Public support and acceptance of conservation measures seems urgent to reach national and international conservation goals. This project analyses the psychological factors behind public acceptance of biodiversity conservation measures. In an empirical

Comments on ``Nonlinear Output Feedback Control of Dynamically Positioned Ships Using Vectorial observer Backstepping''

The decomposition of nonlinear output feedback control into an observer and a state feedback control is an open problem. A solution for dynamic positioning of ships has been proposed in the above paper (1) and by Grovlen and Fossen, where an observer-based backstepping method is used. This note points out that the observer design in the above-mentioned papers does not cover unstable ship dynamics