Continuum elastic theory is applied to the formation of misfit dislocations and point defects in strained layer structures. Explicit calculations of the energies of misfit dislocations in the doubleand single-kink geometries yield line tensions below which strained films are stable with respect to defect formation. Our results yield a mismatch-dependent stability limit which, in the double kink...

Dr. Aaron Jacob Marcus, Professor of Medicine at Weill Cornell Medical College and distinguished physician-scientist in hematology and vascular biology, passed away on May 6, 2015 (Figure 1). Aaron Marcus was born in 1925 in Brooklyn, New York, where he attended Boys High School (1939–1943). His formal education at the University of Virginia (1943–1944; 1946–1948) was interrupted by his service...

This paper proposes a model of efficiency wage with endogenous workers flows in interaction with imperfect competition on the product markets. Subject to economy-wide shocks, firms hire and fire workers thus generating a certain turnover. We show that the intensity of this turnover negatively affects workers’ incentives and induces higher efficiency wage premia. Increased competition pushes rea...

H a b i l i t a t i o n s s c h r i f t zur Erlangung des akademischen Grades doctor rerum naturalium habilitatus Färbungszahl χ(G) eines Graphen ist jedoch i.a. NP-schwer. Die Cliquen-zahl ω(G) ist eine natürliche untere Schranke für χ(G); für perfekte Graphen G gilt stets Gleichheit (für alle induzierten Untergraphen), im Allgemeinen können die beiden Parameter jedoch beliebig weit auseinande...