1.   A proposed accounting rule would stiffen the requirements on companies when they value derivative investments, and could deter banks from owning the instruments.

2.   It also plans to stiffen its requirements for all future drivers.

3.   The change offers flexibility, but continues to stiffen requirements.

4.   The city has also stiffened requirements for applicants to the force and developed stronger anti-corruption training.

5.   The National Collegiate Athletic Association has remedied the problem somewhat by stiffening entry requirements for college freshmen with athletic scholarships.

6.   Pitofsky said the commission has already begun stiffening the requirements placed on corporations that suggest spinning off assets and restructuring companies to meet antitrust concerns.