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The endogeneity problem is particularly relevant in the context of time series analysis of causal processes. It is common for some factors within a causal system to be dependent for their value in period t on the values of other factors in the causal system in period t − 1.
The Technium: Simultaneous Invention, Kevin Kelly, 9 May 2008 Apperceptual: The Heroic Theory of Scientific Development at the Wayback Machine (archived 12 May 2008), Peter Turney, 15 January 2007 A Survey of Russian Approaches to Perebor (Brute-Force Searches) Algorithms , by B.A. Trakhtenbrot, in the Annals of the History of Computing , 6(4 ...
In Western jurisprudence, concurrence (also contemporaneity or simultaneity) is the apparent need to prove the simultaneous occurrence of both actus reus ("guilty action") and mens rea ("guilty mind"), to constitute a crime; except in crimes of strict liability.
Note that y 2,t can have a contemporaneous effect on y 1,t if B 0;1,2 is not zero. This is different from the case when B 0 is the identity matrix (all off-diagonal elements are zero — the case in the initial definition), when y 2,t can impact directly y 1,t+1 and subsequent future values, but not y 1,t.
Suppose there are m regression equations = +, =, …,. Here i represents the equation number, r = 1, …, R is the individual observation, and we are taking the transpose of the column vector.
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Protandrous simultaneous hermaphroditism: Early pure male reproduction and later reproduction in both sexes. [12] Furthermore, there are also species that reproduce as both sexes throughout their lifespans (i.e simultaneous hermaphrodites), but shift their reproductive resources from male to female over time. [13]
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