supplier selection is a multi-criteria problem. this study proposes a hybrid model for supporting the suppliers’ selection and ranking. this research is a two-stage model designed to fully rank the suppliers where each supplier has multiple inputs and outputs. first, the supplier evaluation problem is formulated by data envelopment analysis (dea), since the regarded decision deals with uncertai...

In current Java implementations, Remote Method Invocation is slow. On a Pentium Pro/Myrinet cluster, for example, a null RMI takes 1228 μs using Sun’s JDK 1.1.4. This paper describes Manta, a Java system designed to support efficient communication. On the same Myrinet cluster, Manta achieves a null RMI latency of 35 μs. Manta is based on a native Java compiler. It achieves high communication pe...

this paper investigates a procedure for identifying all efficient hyperplanes of production possibility set (pps). this procedure is based on a method which recommended by pekka j. korhonen[8]. he offered using of lexicographic parametric programming method for recognizing all efficient units in data envelopment analysis (dea). in this paper we can find efficient hyperplanes, via using the para...

based on the similarity of prokaryotic dna to that of mitochondrial dna, a rapid and efficient method for dna purification from mitochondrial extracts obtained from different sources, was carried out based on the modification method described by marmur (1983) which resulted in a high degree of purity (a260/a280=2). in addition we have applied the same technique for the first time to purify the ...

background: dental pulp stem cells can be used in regenerative endodontic therapy. the aim of this study was to introduce an efficient method for dental pulp stem cells isolation. materials and methods: in this in-vitro study, 60 extracted human third molars were split and pulp tissue was extracted. dental pulp stem cells were isolated by the following three different methods: (1) digestion of ...

With the Loffeld's bistatic formula, point target reference spectrum (PTRS) of multireceiver synthetic aperture sonar (SAS) can be decomposed into quasi monostatic term and deformation (BD) term. The former is analogous to SAS PTRS while latter one describes phase introduced by displacement between transmitter receiver. echo signal transformed equivalent data after correcting BD Based on range ...