This paper examines the extent to which swings in stock prices can be related to variations in the discounted value of expected future dividends when investors face uncertainty about their future behavior. I develop an econometric model that accounts for the instability of U.S. dividend growth and discount rates during the past 120 years. Estimates of the model reveal that changing forecasts of...

A new crystal structure of a modified hammerhead ribozyme reveals an intermediate conformation that may explain discrepancies between previous structures and the required orientation of the labile bond in the ribozyme's active site.

Intrauterine contraception is the most widely used method of reversible fertility regulation in the world. Finally, IUC is undergoing a renaissance in the US and it's role will expand as new devices and systems are developed and as old biases among clinicians and women are erased. Successful fertility regulation is a defining factor of the overall health of a population; the expanded use of IUC...

Lifetime models of high-power Insulated Gate Bipolar Transistors modules express the number cycles to end life as a function stress parameters. These are normally developed based on experimental data from accelerated power-cycling tests performed at predefined temperature conditions as, for example, with swings above 60 °C. However, in real power converters applications, usually stressed not ex...

This thesis explores the design and analysis of Static Random Access Memories (SRAMs), focusing on optimizing delay and power. The SRAM access path is split into two portions: from address input to word line rise (the row decoder) and from word line rise to data output (the read data path). Techniques to optimize both of these paths are investigated. We determine the optimal decoder structure f...

To enhance the inertial response and damping capability during transient events this paper investigates an improved active power control for variable speed wind turbines. The optimized power point tracking (OPPT) controller, which swings the turbine operating point from the maximum power point tracking (MPPT) curve to the virtual inertia control (VIC) curves by the frequency deviation, is propo...

Previous placebo-controlled experimental studies have shown that a single dose of MDMA can increase emotional empathy in the multifaceted empathy test (MET) without affecting cognitive empathy. Although sufficiently powered to detect main effects of MDMA, these studies were generally underpowered to also validly assess contributions of additional parameters, such as sex, drug use history, trait...