The Traveling Umpire Problem (TUP) is an optimization problem in which umpires have to be assigned to games in a double round robin tournament. The objective is to obtain a solution with minimum total travel distance over all umpires, while respecting hard constraints on assignments and sequences. Up till now, no general nor dedicated algorithm was able to solve all instances with 12 and 14 tea...

This paper describes operational research (OR) contributions in forestry over the past 50 years, based on scientific pathways along which authors have traveled. We draw our personal experiences and recall how use of OR has evolved from early linear programming Canadian forest products industry 1950s strategic management planning by U.S. Forest Service 1960s. describe widespread many aspects a 5...

Modern military operations are characterized by highly dynamic environments, complex strategic, operational, and tactical situations, a rich and evolving mix of allies and adversaries, inherent and sometimes massive uncertainty, and high risk. This combination of factors requires that military forces must continually transform and adjust to remain highly effective in extremely fluid environment...

An operational semantics is deened for the language of timed CSP, in terms of two relations: an evolution relation, which describes when a process becomes another simply by allowing time to pass; and a timed transition relation, which describes when a process may become another by performing an action at a particular time. It is shown how the timed behaviours used as the basis for the denotatio...

In recent years, Operational Business Intelligence has emerged as an important trend in the Business Intelligence (BI) market. While sharing some obvious features with “traditional” data warehouse based BI, some of the requirements for the operational flavor are strikingly different justifying the question how, or even whether, Operational BI fits into a DW environment. We describe an architect...