Operations Research Society of Eastern Africa (ORSEA) Journal, is a semi-annually refereed journal publishing original scholarly and practitioner material on operations research. It is open to, and indeed encourages a wide range of topical issues and emerging methods; conceptual approaches; and substantive problem areas within the domain of operations research. It is devoted to the improvement and further development of theories and practices of operations research and it is designed to appeal to academics, practitioners, and policy makers. Articles submitted for publication must conform to “ORSEA Authors’ Guidelines”.