Washington Metropolitan Area Transit Authority (WMATA) Metrorail has implemented improvements to its automatic train control and signals program, but “is not carrying out some key safety commitments,” ...

Mixed-signal designs combine the most powerful features and advantages of both analog and digital circuitry. One common mixed-signal architecture is a chain of analog signal blocks, each controlled by ...

Complete, unambiguous, and correct software requirements, including safety or security requirements. Correct and consistent design specifications without extraneous functionality. Compiler-produced ...

This study provides an important and biologically plausible account of how human perceptual judgments of heading direction are influenced by a specific pattern of motion in optic flow fields known as ...