Optimization models related to designing and operating complex systems are mainly
focused on some efficiency metrics such as response time, queue length, throughput, and …

In this paper, we consider multicommodity flow problems, with unsplittable flows and
piecewise linear routing costs. We first focus on the case where the piecewise linear routing …

Unsplittable flow problems cover a wide range of telecommunication and transportation
problems and their efficient resolution is key to a number of applications. In this work, we …

In this paper, a hybrid meta-heuristic is proposed which combines the GRASP with path
relinking method and Column Generation. The key idea of this method is to run a GRASP …

In this paper, we address a hop-constrained node survivable traffic engineering problem in
the context of packet switched networks with source based routing. Consider a …

The progress in web based DSS technologies in recent decades has given individuals many
opportunities to make their business environments and daily lives so easier that could never …

Rostering problems arise in a diversity of areas where, according to the business and labor
rules, distinct variants of the problem are obtained with different constraints and objectives …

Traffic bifurcation over multiple paths may be used to balance load on telecommunication
networks. This balancing of load not only improves resilience against link failures but also …

In this dissertation we study the routing problem for multi-commodity survivable network ows,
with splittable demands, and propose end-to-end path-based solutions where maximum link …