In the United Kingdom, by contrast, local-authority spending is constrained by rules set by the central government.
This importance and broadness of institutions is also indicated by other literature in which institutions are considered as enabling and constraining factors-set by the broader prevailing social, economic, and political context-that determine how people select information, how they interact, and do or do not cooperate [ 5, 7, 36].
The international mobility of low-skilled workers is constrained by immigration restrictions set by rich countries, preventing extreme poverty from declining in the developing world.
In fact, the number of transcription factors present in the genome is constrained by the limits set by coding theory: unlimited increase of the number of transcription factors capable of recognizing specific nucleotide sequences would lead to the increase of misrecognition errors (Itzkovitz et al. 2006).
Multigroup SEM proceeds in hierarchical steps with increasingly restrictive models being tested by constraining sets of model parameters.
Branch lengths were first set by constraining the age of fossil terminal taxa in the analysis, and minimum age constraints for higher taxonomic units were also added where possible based largely on those genera/families reported from the Eocene deposits of Monte Bolca [ 39].
Branch lengths were first set by constraining the age of the terminal taxa in the analysis, as well as the first occurrence of Esocidae based on the review of [ 33]; however this violated assumptions of BM for some variables, though alternate evolutionary models were found to fit the data less well than BM (Additional file 1).
When Scarsdale, N.Y., and other affluent communities complain about state tests, they are arguing, in part, that they do not want to be constrained by a uniform standard set by the state.
"The 1972 Solaris is perhaps the only film to address the limits of science set by our constrained human perceptions, categories and tendency to anthropomorphise," says Gregory Benford, professor of physics at University of California, Irvine and author of Timescape.
But the Treasury itself is constrained by the debt ceiling set by Congress, and an independent central bank should not rely on the fiscal authority for one of its tools.A better solution would be for the Fed to issue its own bills, as other central banks do.
