Because the study did not use a random sample, it is difficult to draw conclusions from it, Occidental administrators cautioned.
The E.P.A. administrator, Michael O. Leavitt, cautioned that the designations were preliminary.
Yet they also caution that focussing solely on depictions of race onstage may be myopic, given the overwhelming whiteness of opera's performers, composers, directors, and administrators.
In the process, however, some observers caution that the board members run the risk of becoming too detached from district operations if they rely too heavily on appointed administrators and midlevel managers to make all decisions.
So caution is appropriate.
"Out of an abundance of caution, administrators and police investigated and determined there was not a credible threat," the Independence School District wrote in a statement.
Paul Anastas, the agency's assistant administrator for research and development, cautioned that more testing was needed to study how toxic the dispersants are when mixed with oil.
NASA's associate administrator for space operations, William H. Gerstenmaier, cautioned that the job losses might appear worse than they would end up.
The framework is administration arranged and can be sent by portable administrators to send cautions to clients who have malware on their gadgets.
Andrew Natsios, who helped devise the new policy before resigning as administrator of the United States aid agency earlier this year, cautioned that malaria projects will need to provide much more than just nets and sprays.
