Passive Damping of Rotationally Periodic Structures with Tuned Piezoelectric Inductive Shunt

This paper considers the piezoelectric resistive and inductive RL shunt damping applied to rotationally periodic structures equipped with an array of regularly spaced piezoelectric patches. A method for simplifying the hardware, by reducing the size of the inductors and eliminating the use of synthetic inductors, is described. The paper compares two different ways of using the piezoelectric array: independent loops and parallel loops. It shows that, if a specific mode with n nodal diameters is targeted, mounting 4n piezoelectric patches in two parallel loops is as efficient as mounting them in 4n independent loops, while considerably reducing the demand on the inductors, L, (by 4n2). The method takes advantage of the mode shapes of rotationally periodic structures. The proposed method is validated numerically and experimentally on a rotationally periodic circular plate (nearly axisymmetric). The proposed technique is aimed at turbomachinery applications

Typologies of post-divorce coparenting and parental well-being, parenting quality and children’s psychological adjustment

First published online: 30 October 2015The aim of this study was to identify post-divorce coparenting profiles and examine whether these profiles differentiate between levels of parents’ well-being, parenting practices, and children’s psychological problems. Cluster analysis was conducted with Portuguese heterosexual divorced parents (N = 314) to yield distinct postdivorce coparenting patterns. Clusters were based on parents’ self-reported coparenting relationship assessed along four dimensions: agreement, exposure to conflict, undermining/support, and division of labor. A three cluster solution was found and replicated. Parents in the highconflict coparenting group exhibited significantly lower life satisfaction, as well as significantly higher divorce-related negative affect and inconsistent parenting than parents in undermining and cooperative coparenting clusters. The cooperative coparenting group reported higher levels of positive family functioning and lower externalizing and internalizing problems in their children. These results suggested that a positive coparenting alliance may be a protective factor for individual and family outcomes after parental divorce

Wolfgang Rossler, Reflexe vorsokratischen Denkens bei Aischylos

Bastaits M. Wolfgang Rossler, Reflexe vorsokratischen Denkens bei Aischylos. In: L'antiquité classique, Tome 40, fasc. 2, 1971. pp. 708-710

David J. Furley and R. A. Allen (éd.), Studies in Presocratic Philosophy. Vol. I : The Beginnings of Philosophy

Bastaits M. David J. Furley and R. A. Allen (éd.), Studies in Presocratic Philosophy. Vol. I : The Beginnings of Philosophy. In: L'antiquité classique, Tome 40, fasc. 2, 1971. pp. 777-778

Wolfgang Rossler, Reflexe vorsokratischen Denkens bei Aischylos

Bastaits M. Wolfgang Rossler, Reflexe vorsokratischen Denkens bei Aischylos. In: L'antiquité classique, Tome 40, fasc. 2, 1971. pp. 708-710

Etude de l’influence du profil des roues de métro sur l’usure ondulatoire -- Sciences Appliquées

info:eu-repo/semantics/nonPublishe