| Selective testing - | (Software Engineering) testing only a selected set of program paths and data inputs |
| Software - | (Software Engineering) programs, documents and data |
| State transition diagram (STD) - | (Software Engineering) a notation for behavioral modeling |
| Structured programming - | (Software Engineering) a design method that limited design constructs to only three basic forms and constrains program flow for better quality |
| Task set - | (Software Engineering) a collection fo software engineering tasks that are required to complete an activity or action that is part of a software process framework |
| UML (Unified Modeling Language) - | (Software Engineering) a comprehensive diagrammatic notation for the analysis and design of software |
| Unit testing - | (Software Engineering) part of the testing strategy that focuses on tests to individual program components |
| User-story - | (Software Engineering) a usage scenario that is used as part of Extreme programming |
| White box testing - | a test case design technique that makes use of a knowledge of the internal program logic |
| AAC - Autoclaved Aerated Concrete | (Concrete Engineering) Exceptionally lightweight precast concrete with high thermal qualities and fire resistence. Suitable for cutting with ordinary hand tools. Mix design is composed of portland cement, sand or siliceous material, lime, gypsum, finely powdered aluminum, and water. Initial mix is a combination of portland cement, sand, lime and gypsum to produce a slurry. Finely powdered aluminum mixed into a paste is added prior to placement into large, rail-like forms. The finely powdered aluminum reacts with the alkaline components of the cement and lime to produce hydrogen gas, which increases the volume approximately five times producing a uniformly, dispersed cellular structure. Units are cut to required shape. Units are placed in an autoclave, an enclosed pressurized chamber, and steam cured at 3500 F. Approximately 80% of the ultimate volume consists of air voids. |