نتایج جستجو برای: fleet of ships scheduling

تعداد نتایج: 21175771  

2016
Herman Mawengkang

Vehicle Routing Problem (VRP) is a key element of many transportation systems which involve routing of fleet of vehicles from a depot to a set of customers node. It is required that these vehicles return to the depot after serving customers’ demand. This paper investigates a relaxed version of VRP, in which the number of visits to the customer is not restricted to be at most one. The relaxed ve...

2017
Mathias Sirvent Martin Weibelzahl

In this paper we present a four-level market model that accounts for airport capacity extension, fleet investment, aircraft scheduling, and ticket trade. In particular, budget-constrained airports decide on the first level on their optimal runway capacity extension and on a corresponding airport charge. Airports anticipate optimal long-term fleet investment of airlines on the second level, opti...

1999
Vadim V. Bulitko David C. Wilkins

Many Artificial Intelligence decision-making systems operate in cycles. A typical problem-solving cycle might consist of deliberation, scheduling, and execution steps. At the deliberation step a number of feasible actions are generated. They are then evaluated by a scheduler at the scheduling step and the most suitable action is performed at the execution step. This paper presents a scheduling ...

2014
G. Nirmala D. Ramprasad

In this paper we present an optimization model for train scheduling. This model constitutes one of the three major components of a solution approach for solving the transit network design problem. The problem of scheduling can be defined in the following general terms. Given the origin destination matrix for the train trips for design period, the underlying train network characterized by the ov...

2010
Francisco Sylvester Hugh J. MacIsaac

The introduction of species to habitats to which they are nonindigenous is a principal form of global change (Lawler et al., 2006). Introduction of non-indigenous species (NIS) has increased in both terrestrial and aquatic environments worldwide commensurate with increased global trade and travel (see Ruiz & Carlton, 2003). Human populations are utterly dependent on ships for global commerce, w...

Journal: :BMC Gastroenterology 2006
Mark S Riddle Bonnie L Smoak Scott A Thornton Joseph S Bresee Dennis J Faix Shannon D Putnam

BACKGROUND Infectious gastrointestinal illness (IGI) outbreaks have been reported in U.S. Navy ships and could potentially have an adverse mission impact. Studies to date have been anecdotal. METHODS We conducted a retrospective analysis of weekly reported disease and non-battle injury health data collected in 2000-2001 from 44 U.S. Navy ships while sailing in the 5th Fleet (Persian Gulf and ...

2002
Mansour Rahimi Maged Dessouky Merrill Weidner

Many types of transportation systems, for example, public transit and commercial freight hauling and package delivery, may be categorized as being fleet operations. The environmental impacts of fleet operations such as these are affected by factors including the initial choice and selection of vehicles (types) comprising the fleet, vehicle age and maintenance, and the modal conditions under whi...

2008
Amir Kamil

I intend to use the streaming model as the basis for Admiral 2, particularly that of the StreamIt language [1]. In this model, a program consists of multiple independent filters, each of which consists of a steady-state function that computes a fixed number of outputs from a fixed number of inputs. These filters are composed hierarchically into a streaming graph, where edges correspond to the f...

Journal: :International maritime health 2006
Stephen E Roberts Peter B Marlow

BACKGROUND Over 2300 merchant seafarers are currently employed on board UK Royal Fleet Auxiliary (RFA) ships. However, little is known about work related mortality among these seafarers, and whether it is lower than among seafarers in merchant fleets. OBJECTIVES To establish the causes and circumstances of all work related deaths among seafarers who were employed in RFA ships from 1976 to 200...

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