this paper examines the historical development of operations research (or) and represents different or methods (methodologies) developed during its lifetime. then, considering thomas kuhn’s paradigm model of scientific development as a basis for our work, the former and current status of or are analyzed and the future trend is discussed.

This paper uncovers an increasing proportion of quoted UK companies omitting cash dividends. Using a large panel of quoted UK companies, we estimate models for the incidence of dividend omissions and cuts as functions of financial characteristics including cash flow, leverage, investment opportunities, investment and company size. These variables account for most of the increase in omission sin...