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Figure 1: Parallelogram construction for adding vectors. This construction has the same result as moving F 2 so its tail coincides with the head of F 1, and taking the net force as the vector joining the tail of F 1 to the head of F 2. This procedure can be repeated to add F 3 to the resultant F 1 + F 2, and so forth.
The resulting vector is sometimes called the resultant vector of a and b. The addition may be represented graphically by placing the tail of the arrow b at the head of the arrow a, and then drawing an arrow from the tail of a to the head of b. The new arrow drawn represents the vector a + b, as illustrated below: [7] The addition of two vectors ...
In computer science, a double-ended queue (abbreviated to deque, / d ɛ k / DEK [1]) is an abstract data type that generalizes a queue, for which elements can be added to or removed from either the front (head) or back (tail). [2] It is also often called a head-tail linked list, though properly this refers to a specific data structure ...
This discussion will be technical, so recall that, for a list, | | denotes its length, that NIL represents an empty list and (,) represents the list whose head is h and whose tail is t. The data structure used to implement our queues consists of three singly-linked lists ( f , r , s ) {\displaystyle (f,r,s)} where f is the front of the ...
Enone–alkene cycloadditions can produce two isomers, depending on the orientation of substituents on the alkene and the enone carbonyl group. When the enone carbonyl and substituent of highest priority are proximal, the isomer is termed "head-to-head." When the enone carbonyl and substituent are distal, the isomer is called "head-to-tail."
As the head/tail breaks method can be used iteratively to obtain head parts of a data set, this method actually captures the underlying hierarchy of the data set. For example, if we divide the array (19, 8, 7, 6, 2, 1, 1, 1, 0) with the head/tail breaks method, we can get two head parts, i.e., the first head part (19, 8, 7, 6) and the second ...
The vector representation (embedding) of the head plus the vector representation of the relation should be equal to the vector representation of the tail entity. TransE [ 9 ] : Uses a scoring function that forces the embeddings to satisfy a simple vector sum equation in each fact in which they appear: h + r = t {\displaystyle h+r=t} . [ 7 ]
For example, when this probability is 0.25 then the probability of finding: an isotactic triad is P m 2, or 0.0625; an heterotactic triad is 2P m (1–P m), or 0.375; a syndiotactic triad is (1–P m) 2, or 0.5625; with a total probability of 1. Similar relationships with diads exist for tetrads. [5]: 357