The basic assumption in the traditional inventory model is that all outputs are perfect items. However, this assumption is too simplistic in the most real-life situations due to a natural phenomenon in a production process. From this it is deduced that the system produces non-perfects items which can be classified into four groups of perfect, imperfect, reworkable defective and non-reworkable d...

The need for higher performance electronics for space and defense applications has driven the development of InP heterojunction technologies. For the past 10 years, TRW has been developing InP HBT and HEMT technologies for mission critical applications [1– 3]. Consistent and continuous improvements in the basic MBE structure and process technology have enhanced device and circuit performance, p...

Micro-economic theory defines productions as the process of transforming inputs (production factors) into outputs (products). In order to explain efficient production and to provide means to select the best alternative from a set of possible production processes, two fundamental theories have been developed: The so called activity analysis [KOOPMANS 51] and the theory of production corresponden...