With the current advances in aircraft design and Lithium-Ion batteries, electric are expected to serve as a replacement for conventional, short-range aircraft. This paper addresses main operational challenges flights operated with aircraft: determining investment needs fleet of aircraft, logistics charging stations swap batteries required support these flights. A mixed-integer linear program tw...

A study about the requirements and cargo transportation demand in Black Sea as part of a multimodal frame is performed, estimating potential need ship fleet multipurpose ships. The performs conceptual vessel design sizing using long-time experience statistics defining main dimensions her hull form, resistance propulsion, weights, stability, free-board, seakeeping manoeuvrability, capital, opera...

Designing an order picking system can be very complex, as several interrelated control variables are involved. We address the sizing of storage capacity bay, crew pickers, and AGV fleet, which most important from a tactical viewpoint in parts-to-pickers system. Although is widely explored topic literature, no analytical model that simultaneously deal with these currently available. To bridge th...

Abstract The transport sector is responsible for 25% of global CO 2 emissions. To reduce emissions in the EU, a shift from currently 745,000 operating public buses to electric (EBs) expected coming years. Large-scale deployments EBs and electrification bus depots will have considerable impact on local grid, potentially creating network congestion problems spikes energy load. In this work, we im...

Paper aims This study presents several business analytics tools that allow improving the tactical planning of collection process for a Colombian solid-waste management company. Originality The extant literature operations research/analytics applied to these systems focuses on facility location or vehicle routing. Tactical decisions are seldom studied in devoted waste systems. By contrast, focus...

Software companies exploit data about completed projects to estimate the development effort required for new projects. Software size is one of the most important information used to this end. However, different methods for sizing software exist and companies may require to migrate to a new method at a certain point. In this case, in order to exploit historical data they need to resize the past ...

The automotive sector operates under the just-in-time (JIT) approach, but variations in demand mean that first-tier suppliers generate an accumulation of stocks at second-tier suppliers. Second-tier have a limitation storage space, reason to limit their production size warehouse, always attending plan. A further supplier is number empty reusable containers delivers and are used package injected...

The fleet assignment problem (FAP) assigns the type of airplane at each flight segment. Since airplane is an expensive resource, poor fleet assignment can cause a great increase in costs of airlines. There are so many consideration which should be tackled in formulation of a FAP problem, especially the parameters regarding to the airplanes. This paper presents a novel, mixed integer programing ...

In the dynamic software field there are major challenges in adapting metrics and cost estimation methods to continuing changes. There is a need to assess emerging trends and re-interpret software size measures and estimation models for new processes. Future trends of software systems are overviewed with implications for software sizing and cost estimation capabilities. Methods are shown to hand...