In this paper we study the problem of optimal routing in the global context of dynamic ATFM for the European Airspace. The modelling and the algorithms described below have been developed in order to feed with trajectories a global optimization problem in accordance with the column generation technique. However, the method can be used independently to quickly build feasible 4-dimensional trajec...

The standard approach to deal with uncertainty in dynamic optimization is to tak e a conservativ e stand. Measurement-based optimization schemes allow reducing this conservatism by using measurements to compensate for the uncertainty. On the example of productivity optimization of a batch distillation column with a terminal quality constraint, various measurement-based optimization schemes are ...

The complexity of the Bandpass problem is re-investigated. Specifically, we show that the problem with any fixed bandpass number B ≥ 2 is NP-hard. Next, a row stacking algorithm is proposed for the problem with three columns, which produces a solution that is at most 1 less than the optimum. For the special case B = 2, the row stacking algorithm guarantees an optimal solution. On approximation,...

This work presents a reactive distillation column for the catalytic disproportionation of trichlorosilane to silane which includes three consecutive reversible reactions. This reaction system is however characterized by a large distinction in the boiling points of the components, which make the reactive distillation extremely favored. Nevertheless, the normal reactive distillation column posses...

Environmental Optimization Oil Spill Response Planning with MINLP Fengqi You and Sven Leyffer . . . . . . . . . . . . . . . . . . . . 1 Bulletin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Comments from the Editor Sven Leyffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Chairman’s Column Michael C. Ferris . . . . . . . . . . ...

Glutathione S-transferase rGSTM5* was isolated from rat testis with a combination of glutathione affinity column and reverse-phase column chromatography. The protein was digested with Achromobacter protease I or endoproteinase Arg-C. The peptide fragments were isolated for electrospray MS and N-terminal peptide sequencing analyses. The primary amino acid sequence of rGSTM5* comprises 217 residu...

Garcia et al. [1] present a class of column generation (CG) algorithms for nonlinear programs. Its main motivation from a theoretical viewpoint is that under some circumstances, finite convergence can be achieved, in much the same way as for the classic simplicial decomposition method; the main practical motivation is that within the class there are certain nonlinear column generation problems ...

In this paper for existing concurrent structure independent fault detection schemes with new technique for the fault detection of sub bytes and inverse sub bytes using the relation between the input and output of the S-box, the formulation of mix column are implemented for AES, which results in the reduction of area coverage and power consumption along with the error coverage of greater than 99...