original paper   the mass-transfer media plays a significant role on the performance of a packed tower. in this paper three counter-current single-stage packed towers at laboratory scale, randomly packed with two different sizes of two types of packing material were experimentally tested to study the role of the packing on the performance of them in the removal of sulfuric acid mists. gas sampl...

This survey collects basic results concerning fractal and ergodic properties of Julia sets of rational functions of the Riemann sphere. Frequently these results are compared with their counterparts in the theory of Kleinian groups, and this enlarges the famous Sullivan dictionary. The topics concerning Hausdorff and packing measures and dimensions are given most attention. Then, conformal measu...

Original Citation: Baldi M.M. Generalized Bin Packing Problems. In: 4OR. ISSN 1619-4500 (In Press) Availability: This version is available at : http://porto.polito.it/2523486/ since: December 2013 Publisher: Springer Published version: DOI:10.1007/s10288-013-0252-1 Terms of use: This article is made available under terms and conditions applicable to Open Access Policy Article ("Public All right...

The vector bin packing problem (VBP) is a generalization of bin packing with multiple constraints. In this problem we are required to pack items, represented by p-dimensional vectors, into as few bins as possible. The multiple-choice vector bin packing (MVBP) is a variant of the VBP in which bins have several types and items have several incarnations. We present an exact method, based on an arc...

Let {X(t)}t≥0 denote a Lévy process in R with exponent Ψ. Taylor (1986) proved that the packing dimension of the range X([0 , 1]) is given by the index (0.1) γ′ = sup { α ≥ 0 : lim inf r→0+ ∫ 1 0 P {|X(t)| ≤ r} rα dt = 0 } . We provide an alternative formulation of γ′ in terms of the Lévy exponent Ψ. Our formulation, as well as methods, are Fourier-analytic, and rely on the properties of the Ca...