Making decisions about the structure of a future military fleet is challenging. Several issues need to be considered, including multiple competing objectives and the complexity of the operating environment. A particular challenge is posed by the various types of uncertainty that the future holds. It is uncertain what future events might be encountered and how fleet design decisions will influen...

We study real-time routing policies in smart transit systems, where the platform has a combination of cars and high-capacity vehicles (e.g., buses or shuttles) seeks to serve set incoming trip requests. The can use its fleet as feeder connect passengers fleet, which operates on fixed routes. Our goal is find optimal (bus) routes corresponding frequencies maximize social welfare system given tim...

To date, the research on agriculture vehicles in general and Agriculture Mobile Robots (AMRs) particular has focused a single vehicle (robot) its agriculture-specific capabilities. Very little work explored coordination of fleets such daily execution farming tasks. This is especially case when considering overall fleet performance, efficiency scalability context highly automated that perform ta...

BACKGROUND Workers onboard freezer-trawl (FT) and freezer-longline (FL) vessels in Alaska may be at high risk for fatal and non-fatal injuries. METHODS Traumatic occupational injuries onboard vessels in the FT and FL fleets were identified through two government data sources. RESULTS The annual risk of fatal injuries was 125 per 100,000 FTEs in the FT fleet, and 63 per 100,000 FTEs in the F...

Fleet is a middleware system implementing a distributed repository for persistent Java objects. Fleet is primarily targeted for supporting highly critical applications: in particular, the objects it stores maintain correct semantics despite the arbitrary failure (including hostile corruption) of a limited number of Fleet servers and, for some object types, of clients allowed to invoke methods o...

This report describes the results of research to develop and apply a comprehensive model to consider the influence of the mix of vehicle types on the total safety of the light passenger vehicle fleet in Australia. Key inputs to the model are estimates of the crashworthiness and aggressivity of light passenger vehicles in the key crash types representing the majority of crashes in which these ve...

A critical part of Automated Material Handling Systems (AMHS) is the task allocation and dispatching strategy employed. In order to better understand investigate this component, we here present an extensive experimental evaluation three different approaches with randomly generated, as well custom designed, environment configurations. While previous studies typically focused on use cases based h...

Large complex systems, such as power plants, ships and aircraft, are composed of multiple systems, subsystems and components. When they are considered as embedded in operating systems such as a fleet, mission readiness and maintenance management issues are raised. PHM (Prognostics and Health Management) plays a key role in controlling the performance level of such systems, at least on the basis...

The Vehicle Routing Problem (VRP) deals with the assignment of a set of transportation orders to a fleet of vehicles, and the sequencing of stops for each vehicle to minimize transportation costs. In this paper we study the Capacitated VRP (CVRP), which is mainly characterized by using vehicles of the same capacity. Taking a basic GA to solve the CVRP, we propose a new problem dependent recombi...

The transit network design problem (TNDP) aims to find a set of routes and corresponding frequencies for an urban public transportation system. We model the TNDP as a multi-objective combinatorial optimization problem whose resolution involves finding a Pareto front that represents different trade-off levels between opposite objectives, the travel and waiting times and the required fleet of bus...