A way of expressing the first law of thermodynamics is that any change in the internal energy (âE) of a system is given by the sum of the heat (q) that flows across its boundaries and the work (w) done on the system by the surroundings:
Titles don't really mean much. Design Engineer or Associate Engineer mean something only in the confines of the company in which they are used. If you want a definition of different levels of engineers, use the definitions given by ASCE or one of the other professional societies.
The job series is the occupational family to which the advertised position belongs. For example, the Federal series code for the Archivist occupational family is 1420. The job grade represents the pay-level of the position, which is based on the level of difficulty and responsibility.