(2) In none of these works a distinction between intermediate and final demand goods is made, which, however, proves important as shown inter alia by Miroudot et al.
The marked losses of these systems on a global scale has led to proposals for the protection of healthy habitats which, however, have proven to be less than completely successful, thereby necessitating the restoration of impacted habitats.
This chapter merely lists concepts more specific to certain issues, which have however proven valuable, and sometimes vital, in implementing the method in an operational context.
Accordingly, a lower creep is to be expected in concrete with a higher modulus of elasticity and lower moisture content, which is however proven to be wrong by numerous experiments (Mindess et al. 2003).
It is well known that b can be recovered solving (5) if the sensing matrix fulfills the so-called restricted isometry property (RIP; [19]), which however has been proved only for a limited class of matrices (in particular, random matrices [20]).
One of the tins, however, proved to contain turpentine, which worked much better.
Descartes emphasized the desirability of lenses with hyperbolic surfaces, which focus bundles of parallel rays to a point (spherical lenses of wide apertures give a blurry image), and he invented a machine to cut them which, however, proved more ingenious than useful.
Television, however, proved otherwise.
The trip, however, proved fruitless.
Bouillabaisse, however, proved a disappointment.
