Five Carnegie Mellon University professors are among 76 people elected this year to the prestigious National Academy of Engineering.

Cristina H. Amon, a mechanical engineer who heads the Institute for Complex Engineered Systems, was recognized for her work on thermal design of portable electronics and for contributions to engineering education.

Egon Balas, professor of operations research at the Tepper School of Business, was elected for work related to the scheduling and planning of industrial facilities.

Computer scientist Manuel Blum was cited for his contributions to abstract complexity theory, cryptography and methods for checking software for defects.

Pradeep K. Khosla, dean of engineering, was elected for his work on robotic systems that assemble electronics and for contributions to engineering education.

Polymer chemist Krzysztof A. Matyjaszewski, director of the Center for Macromolecular Engineering, was selected for developing methods for precisely controlling the formation of polymers.