While the conventional DEA based production plans aim to minimize all the inputs consumption and maximize all the outputs production, there are many real world production systems may also generate undesirable by-products. One methodological difficulty associated with the previous DEA-based production planning models is how to incorporate undesirable factors in the planning models, while the sim...

Arthropods in hospital are undesirable elements. However, they invaded hospitals such as other places in urban environment. Arthropods such as cockroaches, houseflies, ants, mosquitoes, spiders could take part in transferring pathogens that might be source of infection. Many authors reported arthropods that occur in hospitals and are important factor in worsening the health of patients (infecti...

This paper models the firm’s production process as a system of simultaneous technologies for desirable and undesirable outputs. Desirable outputs are produced by transforming inputs via the conventional transformation function, whereas (consistent with the material balance condition) undesirable outputs are by-produced via the so-called “residual generation technology”. By separating the produc...

In multitasking, priority-driven systems, resource access-control protocols such as Priority Ceiling Protocol (PCP) reduce the undesirable effects of resource contention. In general, software implementation of these protocols entails costly computations that can degrade the system performance to unacceptable levels. In this paper, we present the design for a hardware-accelerator to execute the ...

The electron beam assisted chemical vapor deposit ion of silicon nitride anti-reflection coatings onto thin film CdS/CuInSe2 solar cells and the resultant effects on their performance are reported. In some cases large increases in the short circuit current, open circuit voltage and fill factor were observed. The present results are explained by the usual index matching anti-reflection mechanism...

while the conventional dea based production plans aim to minimize all the inputs consumption and maximize all the outputs production, there are many real world production systems may also generate undesirable by-products. one methodological difficulty associated with the previous dea-based production planning models is how to incorporate undesirable factors in the planning models, while the sim...