PANDA2, a computer program for the minimum-weight design of elastic perfect and imperfect stiffened cylindrical panels and shells under multiple sets of combined loads, is used to obtain optimum designs of uniformly axially compressed elastic internal T-ring and external T-stringer stiffened cylindrical shells with initial imperfections in the form of the general buckling mode. The optimum desi...

X iv :q ua nt -p h/ 05 10 11 3 v3 22 M ar 2 00 6 Heralded single-photon generation using imperfect single-photon sources and a two-photon-absorbing medium Thomas Konrad∗, Artur Scherer, Michael Nock, and Jürgen Audretsch Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany Abstract We propose a setup for a heralded, i.e. announced generation of a pure single-photon state given tw...

The Imperfect in Romance is used in an array of constructions: progressives, habituals, generics and counterfactual conditionals. The first three all share hallmarks of the Romance Imperfect: they describe something ongoing, in the past, and which requires contextual framing. Counterfactual uses, however, do not, and thus present an important challenge for a unified semantics of the Imperfect. ...

We investigate the impact of human capital on tourism growth by using a semi-parametric fixed effects estimator developed in Baltagi and Li (2002). The results shed new light existing literature since they unveil strong non-linear growth. Furthermore, we uncover non-monotonic “M-shaped” curve between when impose assumption imperfect labor substitutability.