Definition

Total = Quality involves everyone & all activities in the company.
Quality = Conformance to Requirements (Meeting Customer Requirements).
Management = Quality can & must be managed.
TQM = A process for managing quality; it must be a continuous way of life; a philosophy of perpetual improvement in everything we do.

The Program Evaluation & Review Technique

Commonly abbreviated PERT is a model for project management invented by United States Department of Defense's US Navy Special Projects Office in 1958 as part of the Polaris mobile submarine launch project. This project was a direct response to the Sputnik crisis.
This project model was the first of its kind, a revival for scientific management, founded in fordism & taylorism. Though every company now have their own "project model" of some kind, they all resemble PERT in some respect. Only DuPont corporations critical path method was invented at roughly the same time as PERT.
The most famous part of PERT is the "PERT Networks", charts of timelines that interconnect. PERT is intended for very large-scale, one-time, complex, non-routine projects.