The previous director, Dominique Paini, left the post last spring.
She succeeded Robert Engel, the previous director, last month.
The agency's previous director, Dr. Jeffrey Koplan, left the job on March 31.
The previous director, Robert Fri, resigned in 2001, citing concerns about the institution's scientific endeavors.
The previous director general, Greg Dyke, resigned after the report, along with Mr. Davies.
The previous director, Mr. French, had left after completing his contract but before shooting was finished.
The museum's previous director, Timothy Rub, left to run the Philadelphia Museum of Art.
The academy's previous director, Annette Blaugrund, who had championed the sale of the building, resigned last December.
"The previous director general of the prison service used to preach what he called the 'decency agenda'.
The previous director had been ousted for socializing with an officer indicted on a charge of heroin trafficking.
But it has suffered since the previous director, Dr. Harold E. Varmus, stepped down two years ago.
