Tactical crew capacity planning problem in railways involves finding the minimum number of crews in a region required to operate a predetermined set of train duties satisfying the strict day-off requirement for crew. For the single-region problem, we develop two solution approaches based on a...

Turkish Abstract: Bu çalışmada, (Kamakura & Du,2012)’nun dinamik faktör analizi yaklaşımı tabanlı bir metot, Türkiye’de farklı alt-sektörlerde faaliyet gösteren çevrim içi perakende markalarının 2014 – 2017 yılları arasındaki haftalık, arama eğilimleri verileri...

In their paper, Avella et al. (2006) investigate a time-constrained routing problem. The core of the proposed solution approach is a large-scale linear program that grows both row- and column-wise when new variables are introduced. Thus, a column-and-row generation algorithm is proposed to solve...

This study investigates the periodic vehicle routing problem (PVRP) and its variant with time windows with a particular focus on alternative formulation approaches that can be solved by a state-of-the-art commercial solver. We propose a new vehicle flow formulation for the PVRP and strengthen it...