Search results for "Wilkin"
showing 5 items of 5 documents
Residuenabschätzung für Polynom-Nullstellen mittels Lagrange-Interpolation
1970
If, for each zero of a polynomial, an approximation is known, estimates for the errors of these approximations are given, based on the evaluation of the polynomial at these points. The procedure can be carried over to the case of multiple roots and root clusters using derivatives up to the orderk - 1, wherek is the multiplicity of the cluster.
Polynomial Fuzzy Models for Nonlinear Control: A Taylor Series Approach
2009
Classical Takagi-Sugeno (T-S) fuzzy models are formed by convex combinations of linear consequent local models. Such fuzzy models can be obtained from nonlinear first-principle equations by the well-known sector-nonlinearity modeling technique. This paper extends the sector-nonlinearity approach to the polynomial case. This way, generalized polynomial fuzzy models are obtained. The new class of models is polynomial, both in the membership functions and in the consequent models. Importantly, T-S models become a particular case of the proposed technique. Recent possibilities for stability analysis and controller synthesis are also discussed. A set of examples shows that polynomial modeling is…
Polynomial numerical indices of 𝐶(𝐾) and 𝐿₁(𝜇)
2013
We estimate the polynomial numerical indices of the spaces C ( K ) C(K) and L 1 ( μ ) L_1(\mu ) .
Suicidi
2020
I suicidi, eventi drammatici come pochi altri, hanno da sempre costituito una sfida per l’immaginazione sociologica. Se Emile Durkheim aveva dimostrato le capacità esplicative della sociologia, le sociologie costruzioniste – e, in particolare, interazionismo simbolico, etnometodologia, fenomenologia – hanno operato la resa dei conti con gli approcci positivisti. I saggi che qui presentiamo offrono una summa di grande interesse dei modi originali con cui le sociologie costruzioniste hanno re-immaginato lo studio dei suicidi andando oltre la rigidità dello schema “cause e cure” degli approcci positivisti ed arricchendo di sfumature la nostra comprensione del fenomeno. Di fronte a un panorama …