The organizational change in the italian public personnel management

Premise. The importance of the new human resources management. Evolutionary trends in the personnel management. The Italian Public Administration: structural and organizational differences. The organizational public supply's system. The personnel management in the Public Sector. Evolutionary lines of public personnel management. Conclusive considerations. Bibliograph

On some properties of LS algebras

The discrete LS algebra over a totally ordered set is the homogeneous coordinate ring of an irreducible projective (normal) toric variety. We prove that this algebra is the ring of invariants of a finite abelian group containing no pseudo-reflection acting on a polynomial ring. This is used to study the Gorenstein property for LS algebras. Further we show that any LS algebra is Koszul.Comment: 11 pages, minor editing in references, accepted by Communications in Contemporary Mathematic

Relatively independent joinings and subsystems of W*-dynamical systems

Relatively independent joinings of W*-dynamical systems are constructed. This is intimately related to subsystems of W*-dynamical systems, and therefore we also study general properties of subsystems, in particular fixed point subsystems and compact subsystems. This allows us to obtain characterizations of weak mixing and relative ergodicity, as well as of certain compact subsystems, in terms of joinings.Comment: 22 page

Bergelson's Theorem for weakly mixing C*-dynamical systems

We study a nonconventional ergodic average for asymptotically abelian weakly mixing C*-dynamical systems, related to a second iteration of Khintchine's recurrence theorem obtained by Bergelson in the measure theoretic case. A noncommutative recurrence theorem for such systems is obtained as a corollary.Comment: 26 page