helper set

helper set

[′hel·pər ‚set]
(mining engineering)
A set of timbers to reinforce the normal set of timbers in a mine.
References in periodicals archive ?
For latter reference, let [H.sub.i,j] [not subset] N([v.sub.i]) denote the helper set nodes of a source node v; that cooperatively transmit packets to destination [v.sub.j].
Given nodes [v.sub.1], [v.sub.2], ..., [v.sub.m] and [u.sub.1], [u.sub.2], ..., [u.sub.n] residing at different blocks and connected to a common articulation point [v.sub.a], construct a CC-link satisfying (2) by selecting appropriate helper set [H.sub.v,u] [not subset] N([v.sub.i]) (1 [less than or equal to] i [less than or equal to] m) and [H.sub.u,v] [not subset] N([v.sup.j]) (1 [less than or equal to] j [less than or equal to] n) such that (4) is minimized.
According to (2), as the helper set grows, less individual energy is demanded to construct a CC-link.
First, a helper set selection heuristic is presented, which aims at selecting appropriate nodes to compose the helper set.
The link [mathematical expression not reproducible] is created cooperatively by [v.sub.i] and its helper set [H.sub.i,j] [not subset] N([v.sub.i]).
Hence, node [v.sub.i] selects the closest nodes to node [v.sub.a] to form the helper set [H.sub.i,j].
The HSS adds direct neighbors to the helper set until the estimated distance can be reached via a CC-link (while-loop, lines (2)-(10)).
Given a source node [v.sub.i], an articulation node [v.sub.a], and an estimated distance [d.sub.a,j] to a destination node [v.sub.j], the task of computing the helper set [H.sub.i,j] complying with (2) and (4) can be done in O([DELTA] (G) x log [DELTA] (G)) time.
Input: Source [v.sub.i], articulation node [v.sub.a], estimated distance [d.sub.a,j]; Output: A helper set [H.sub.i,j] complying with (2) and (4) or 0; Total transmission power [W.sub.CC]([H.sub.i,j]) or 0 if [H.sub.i,j] = 0.
In case HSS returns a nonempty helper set for a node v [member of] N([v.sub.a]), the required transmission power is informed to the articulation node.
DONNY'S LITTLE HELPER SET SOCKET It's just such a relief not with to mess about having any more when you the spanners set that makes have a socket You can easier.
As Santa Claus and his helper set off in his sleigh, will the Tweenies all get what they want for Christmas?