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A diverging diamond interchange (DDI), also called a double crossover diamond interchange (DCD), [1] [2] is a subset of diamond interchange in which the opposing directions of travel on the non-freeway road cross each other on either side of the interchange so that traffic crossing the freeway on the overpass or underpass is operating on the ...
Braess's paradox is the observation that adding one or more roads to a road network can slow down overall traffic flow through it. The paradox was first discovered by Arthur Pigou in 1920, [1] and later named after the German mathematician Dietrich Braess in 1968.
The Schengen Agreement (English: / ˈ ʃ ɛ ŋ ə n / SHENG-ən, Luxembourgish: [ˈʃæŋən] ⓘ) is a treaty which led to the creation of Europe's Schengen Area, in which internal border checks have largely been abolished.
Josef Melan studied civil engineering at TU Wien from 1869 to 1874 and thereafter was an assistant to Emil Winkler at the Chair of Railway Engineering and Bridge-Building. . Melan wrote his habilitation thesis on the theory of bridges and railways at the same university in 1880 and remained on the teaching staff there until
The three second rule is a time for the defensive driver to judge the minimum safe trailing distance to help avoid collisions under ideal driving conditions. The red car's driver picks a tree to judge a two-second safety buffer. The two-second rule is a rule of thumb by which a driver may maintain a safe trailing distance at any speed.
A trefoil knot, drawn with bridge number 2. In the mathematical field of knot theory, the bridge number, also called the bridge index, is an invariant of a knot defined as the minimal number of bridges required in all the possible bridge representations of a knot.
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ER = EPR is a conjecture in physics stating that two entangled particles (a so-called Einstein–Podolsky–Rosen or EPR pair) are connected by a wormhole (or Einstein–Rosen bridge) [1] [2] and is thought by some to be a basis for unifying general relativity and quantum mechanics into a theory of everything. [1]