objective: the purpose of this research was to study the cognitive functions in patients with methamphetamine-induced psychosis (mip) in comparison with schizophrenia patients and normal subjects. method: this was a cross-sectional study, 30 patients with mip, 30 patients with schizophrenia and 30 normal individuals were selected via convenient sampling and were matched on age, sex and educatio...

In present study, a three-step multi-objective optimization algorithm of cyclone separators is catered for the design objectives. First, the pressure drop (Dp) and collection efficiency (h) in a set of cyclone separators are numerically evaluated. Secondly, two meta models based on the evolved Group Method of Data Handling (GMDH) type neural networks are regarded to model the Dp and h as the re...

We discuss two special cases of the three-dimensional bottleneck assignment problemwhere a certain underlying cost function satisfies the triangle inequality. We present polynomial time 2-approximation algorithms for the broadest class of these special cases, and we prove that (unless P = NP) this factor 2 is best possible even in the highly restricted setting of the Euclidean plane.