We generalize the concept of K-convexity to an n-dimensional Euclidean space. The resulting concept of K-convexity is useful in addressing production and inventory problems where there are individual product setup costs and/or joint setup costs. We derive some basic properties of K-convex...

The teaching of economic history is in decline in our schools and universities. Yet much can be learned from the ananlysis of historical economic events. In this paper, the author combines an analyis of the economic history of the nineteenth century railways and ICT booms with an explanation of...

Measurement is a special type of evaluation more exact than opinion or estimation. Sawyer, Sankey and Lombardo (2013) characterized a measure as satisfying five invariance and continuity conditions. Those conditions are satisfied as the result of a process of convergence towards that measure....

iTruf.com, a community, content, and commerce site directed at Generation Y, saw its stock plummet before it merged with its former parent, the catalog and retail clothing store, dELIA*s. Despite the merger, the critical questions remained for iTurf of what business it was in, what business it...