Outbound logistics is a crucial field of management. This study considers planning distribution for the poultry industry in Thailand. The goal to minimize transportation cost multi-depot vehicle-routing problem (MDVRP). A novel enhanced differential evolution algorithm (RI-DE) developed based on new re-initialization mutation formula and local search function. mixed-integer programming formulat...

Vehicle routing problems with pickup and delivery are of primary importance in distribution and logistics. Given a set of non-homogeneous vehicles, which are located at one central depot, the objective is to generate an optimal route plan ensuring that the demand for heterogeneous commodities can be satisfied by an arbitrary set of suppliers. Owing to their physical property, commodities have t...

The aims of this retrospective study were to evaluate the efficacy of different steroid formulations (depot vs oral) and if the continuous administration of steroids throughout and beyond a CHOP protocol might improve the survival time and rate of cats with mediastinal lymphoma. The medical records of client-owned cats diagnosed with mediastinal lymphoma were reviewed at two veterinary referral...

Kliewer et al. (2006b, 2011) proposed a time window implementation to the multi-depot vehicle (and crew) scheduling problem using a time-space network (TSN). Based on this approach, we developed a new methodology to implement time windows to the vehicle-type scheduling problem (VTSP), which solves the vehicle scheduling problem considering heterogeneous fleet. Our method presents as main advant...

The synthetic polypeptide depot-tetracosactrin (Synacthen-Depot) was given to nine steroid-treated asthmatic patients hypersensitive to animal corticotrophin. Eight had a satisfactory increase in plasma and urinary 17-hydroxycorticosteroids (17-OHCS). The remaining patient had been shown previously to have adrenal suppression. None of the patients developed allergic reactions to depot-tetracosa...

This paper presents a method for solving multi-depot vehicle routing problem (MDVRP). First, a virtual central depot is added to transfer MDVRP to the multi-depot vehicle routing problem with the virtual central depot (V-MDVRP), which is similar to a vehicle routing problem (VRP) with the virtual central depot as the origin. An improved ant colony optimization with coarse-grain parallel strateg...

This paper studies parsimonious, intuitive, and effective formulas to approximate the length of Traveling Salesman Problems (TSP) and Vehicle Routing Problems (VRP). Using intuition derived from continuous models and graph theory, a formula to approximate the length of vehicle routes is proposed. In instances with different patterns of customer spatial distribution, time windows, customer deman...

This paper addresses the capacitated vehicle routing problem with twodimensional loading constraints (2L-CVRP). The 2L-CVRP is a combination of the two most important problems in distribution logistics, which are loading of freight into vehicles, and the successive routing of the vehicles to satisfy customer demand. The objective is to minimize the transportation cost. All vehicles must start a...

In one-to-one Pickup and Delivery Problems (PDPs), the aim is to design a set of least cost vehicle routes starting and ending at a common depot in order to satisfy a set of pickup and delivery requests between location pairs, subject to side constraints. Each request originates at one location and is destined for one other location. These requests apply to the transportation of goods or people...

This article presents a mathematical model of the risk failures, depending on operating parameters, locomotive diesel engines. The purpose this study is to determine failures engines in maintenance. theory probability and logic reliability are used theoretical study. innovations main works first approaches calculating by hourly fuel consumption, which, under operational conditions, allows for e...