Forty-two licensed drivers were tested in an experiment that required them to respond to an in-vehicle phone at the same time that they were faced with making a crucial stopping decision. Using test track facilities, we also examined the influence of driver gender and driver age on these dual-task response capacities. Each driver was given task practice and then performed a first block of 24 tr...

As 10 Gbit/s long-distance optical communication systems become more and more pervasive, requirements rise relating to increased levels of performance, as well as the miniaturization of key devices that configure such systems. Lithium niobate (LN) modulators are used primarily as optical modulators that change high-speed electrical signals at 10 Gbit/s to optical signals for long-distance commu...

We describe how a constructive PC-based driver assessment part-task trainer (PTT) can be integrated into driver training. The PTT, developed through research with law enforcement agencies, gathers data on drivers' scanning and divided-attention skills and also measures the tendency toward tunnel vision under stress. The user sits in front of a computer monitor and interacts with the system thro...

The research proposed a novel LED driver with the functions of power-factor correction (PFC) and current balancing. A flyback converter Class-D series resonant were integrated by sharing an active switch to form single-stage circuit topology. played role PFC circuit. component parameters designed make operate at discontinuous-conduction mode (DCM). In this way, input line can be sinusoidal, res...

We describe a pocket-sized ultrasound driver with an ultralow-output impedance amplifier circuit (less than 0.05 ohms) that can transfer more than 99% of the voltage from a power supply to the ultrasound transducer with minimal reflections. The device produces high-power acoustical energy waves while operating at lower voltages than conventional ultrasound driving systems because energy losses ...

FAST ELECTRONIC DRIVER FOR OPTICAL SWITCHES Electronically controlled optical switches are critical components in many optical systems, including pulsed lasers. Solid-state optical switches based upon the Pockels effect are widely utilized in research and industry, however Pockels cells require electronic drivers capable of switching several kilovolts quickly and cleanly. This thesis reviews Po...

This paper describes the circuit design of a programmable logic array chip using four-phase dynamic circuits, operating at a nominal cycle time of 230 nanoseconds. Bootstrap circuit techniques are used to obtain high function and performance by satisfying some special requirements of PLA designs. These include a simple means for two-bit partitioning of the data inputs, a noninverting buffer cir...