We present a technique to solve the linear integer model with variable bounding. By using continuous optimal solution of model, bounds for basic variables are approximated and then used calculate solution. With known, solving is easier by either branch bound, cut, price, cut or free algorithms. Thus, search large numbers subproblems, which unnecessary common NP Complete models, avoided.

We consider the problem of phase retrieval from corrupted magnitude observations. In particular we show that a fixed x0 ∈ Rn can be recovered exactly from corrupted magnitude measurements |〈ai, x0〉|+ ηi, i = 1, 2 . . . m with high probability for m = O(n), where ai ∈ Rn are i.i.d standard Gaussian and η ∈ Rm has fixed sparse support and is otherwise arbitrary, by using a version of the PhaseMax...

A new poly(vinylchloride) membrane sensor for Cr3+ ions based on di (benzylamino)glyoxime asan ionophore was prepared. The electrode has a linear dynamic range 1×10-6-1×10-1 mol l-1,with aNernstian slope of 20.3 ± 0.5 mV per decade and a detection limit of 2×10-7. It has a fast responsetime of