What does reentrant mean in orienteering?
A reentrant appears on the map as a U or V shape in the contour lines, pointing back into a hillside rather than sticking out of the hill (as would a spur). So a reentrant is a small valley, the center of which would collect water and funnel it downhill (if it were raining hard).
What means re entrant?
Reentrants
noun. a reentering angle or part. a person or thing that reenters or returns: Reentrants to the engineering program must take the introductory course again.
What’s the difference between a valley and a re entrant?
As nouns the difference between valley and reentrant is that valley is an elongated depression between hills or mountains, often with a river flowing through it while reentrant is an angle or part that reenters itself.
What does the acronym dog mean in orienteering?
Dog-leg. A control setting in which the orienteer is likely to use the same route leaving a control as approaching it.
What does reentrant mean in C?
A re-entrant function is one that can be interrupted (typically during thread context-switching), and re-entered by another thread without any ill-effect. Functions that rely on a local variable are considered re-entrant due to the fact that their variables are safely encapsulated between threads.
What are controls in orienteering?
A control point (CP, also control and checkpoint) is a marked waypoint used in orienteering and related sports such as rogaining and adventure racing. The location of control points is kept secret from the competitors until the start of the competition when they receive the map.
What is reentrant kernel?
A re-entrant kernel enables processes (or, to be more precise, their corresponding kernel threads) to give away the CPU while in kernel mode. They do not hinder other processes from also entering kernel mode. A typical use case is IO wait. The process wants to read a file.
What is contouring in navigation?
Using a contour line to find a route This is called ‘contouring’. Contouring is used in hills or mountain areas helps you keep your pace up and make navigation easier. Once you reach a height that’s easy going (out of low-lying bogs and off windswept peaks) you walk along the slope, but keeping at the same altitude.