The implementation of selective contracting in California in 1982 offers a unique natural experiment to study the response of hospitals to changes in the nature of competition.
Important changes in the nature of this research have included the change from even-aged monocultures to natural forests and multispecies, uneven-aged forest plantations and agroforestry systems.
Adding to the complexity are changes in the nature of retirement itself, Dr. Moen said.
The changes in the nature of the game are both subtle and striking.
It is also possible that the new data understates real changes in the nature of work.
For one thing, there have been extraordinary changes in the nature of jobs.
"Even subtle changes in the nature of a request can make all the difference," they write.
Changes in the nature of tax expenditures since 1985 present a challenge for today's tax reformers.
Rather, social changes in the nature of marriage seem to be driving the change.
Changes in the nature and intensity of selection impart genetic drift, reduce diversity, and increase the frequency of deleterious alleles.
The continual search for new organizational forms is driven by basic changes in the nature of competition and the economy.
