Rafael Roca Proejant el temps

Iggy Roca (ed

Most of the papers in this collection derive from presentations at a workshop at the University of Essex in 1995. Except for Chapter 17, "Non-transparent Constraint Effects in Gere: From Cycles to Derivations" by Carole Paradis, the constraint-based papers assume some version of Optimality Theory (OT). However, in the spirit of the unbridled chaos reigning in the phonological realm, it is possi...

Volker Kaibel and Rafael Mechtel

We introduce revlex-initial 0/1-polytopes as the convex hulls of reverse-lexicographically initial subsets of 0/1-vectors. These polytopes are special knapsack-polytopes. It turns out that they have remarkable extremal properties. In particular, we use these polytopes in order to prove that the minimum numbers gnfac(d, n) of facets and the minimum average degree gavdeg(d, n) of the graph of a d...

Rafael Lorente de No, 1946

Métadonnées spatiotemporelles temps réel

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Layoffs, Lemons and Temps∗

We develop a dynamic equilibrium model of labor demand with adverse selection. Firms learn the quality of newly hired workers after a period of employment. Adverse selection makes it costly to hire new workers and to release productive workers. As a result, firms hoard labor and under-react to labor demand shocks. The adverse selection problem also creates a market for temporary workers. In equ...