Abstract Applications of efficiency and productivity analysis in which some inputs outputs are given the form percentages, averages other types ratio measures sufficiently common literature. In two recent papers, authors developed variable constant returns-to-scale technologies with both volume outputs, referred to as R-VRS R-CRS technologies. These generally nonconvex have a complex structure....

For Finite State Machines (FSMs) a rich testing theory has been developed to discover aspects of their behavior and ensure correct functioning. Although this frequently used, e.g. check conformance protocol implementations, its applicability is limited by restrictions FSMs, in which inputs outputs alternate, are determined the previous input state. Labeled Transition Systems with (LTSs), as stu...

In our opinion, the simplest and, simultaneously, the most general version of inflationary cosmology is the chaotic inflation scenario. It can be realized in all models were the other versions of inflationary theory can be realized (see [4] for detailed account). Several years ago it was realized that inflation in these theories has a very interesting property which will be discussed in this ta...

This paper proposes a new method based on the ideal input vector to estimate inputs of a given decision making unit (DMU) when some or all of its outputs are increased to maintain its current efficiency level. In other words, this paper studied the following question: How much would be the increase in the inputs of the DMU if the decision maker increases certain outputs to a particular unit in ...