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Great-circle navigation or orthodromic navigation (related to orthodromic course; from Ancient Greek ορθός (orthós) 'right angle', and δρόμος (drómos) 'path') is the practice of navigating a vessel (a ship or aircraft) along a great circle. Such routes yield the shortest distance between two points on the globe.
MapQuest Find Me let users automatically find their location, access maps and directions and locate nearby points of interest, including airports, hotels, restaurants, banks and ATMs.
The problem of finding the shortest path between two intersections on a road map may be modeled as a special case of the shortest path problem in graphs, where the vertices correspond to intersections and the edges correspond to road segments, each weighted by the length of the segment.
Dijkstra's algorithm finds the shortest path from a given source node to every other node. [7] : 196–206 It can also be used to find the shortest path to a specific destination node, by terminating the algorithm once the shortest path to the destination node is known. For example, if the nodes of the graph represent cities, and the costs of edges represent the average distances between pairs ...
The travelling salesman problem, also known as the travelling salesperson problem ( TSP ), asks the following question: "Given a list of cities and the distances between each pair of cities, what is the shortest possible route that visits each city exactly once and returns to the origin city?" It is an NP-hard problem in combinatorial optimization, important in theoretical computer science and ...
Amtrak service is divided into three categories of routes: Northeast Corridor routes, state-supported routes, and long distance routes. These types indicate how the service is funded. Northeast Corridor service is directly subsidized by federal appropriations. Federally-supported long distance services are subsidized by appropriations under a separate line item from the NEC in federal budgets ...
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