This dissertation describes the relationship between the surface chemistry of colloidal semiconductor nanocrystals (quantum dots, QDs) and their optoelectronic properties, such as photoluminescence and degree of quantum confinement. We primarily focus our efforts on one particular subset of ligands known to couple strongly to the inorganic core of the QD...
Climate change may be one of the most important puzzles the world has attempted to solve and one of the greatest challenges in this area is to improve our understanding of how atmospheric aerosol particles impact climate processes. We seek to overcome this challenge by focusing on the chemistry and...
The over-a-decade quantitative study of the flexion synergy has provided concrete evidence that the stereotypical movement coupling of shoulder abduction with elbow flexion and wrist/finger flexion (i.e. flexion synergy) significantly affects the ability to perform functional upper extremity movements that are essential for activities of daily living (e.g. reach-to-grasp an...
Using cross-sectional and 90-day discharge follow-up data from child welfare residential treatment, this study investigates gender differences in characteristics, needs, and strengths at entry to residential treatment. Specifically, this analysis examines trauma experiences, trauma-related symptoms, internalizing and externalizing behaviors, and strengths, in relation to length of stay and discharge status...
The patent system seeks to strike the ideal balance between competition and the rate of innovation – not to maximize innovation unconditionally. Clearly there must be limits on the manner and degree to which patents are used to diminish competition. A critical complication, however, is that this boundary is often...
DNA methylation in repetitive elements (RE) suppresses their mobility and maintains genomic stability, and decreases in it are frequently observed in tumor and/or surrogate tissues. Averaging methylation across RE in the genome is widely used to quantify global methylation. Methylation of RE in humans is considered a surrogate for global...
The National Institute of Mental Health and the Agency for Healthcare Research and Quality convened an expert panel to identify the top research priorities in the field of behavioral intervention technology (BIT) research. The panel determined that if BIT research is to evolve in an effective way to reach and...
Background: The tripartite model (Clark & Watson, 1991) has been used to represent the substrates of general distress in both depression and anxiety (Negative affectivity [NA]), while also characterizing specific features of decreased positive affectivity (PA) in depression and increased physiological hyperarousal (PH) in anxiety. Core affect characterizes affect by...
While equal political participation is a fundamental democratic ideal, it is an ideal unrealized in the United States. Those with more—more education, more money, more time, more skills—participate more. Those who have less—especially the poor and minorities—participate less and may be absent from the process altogether. A similar statement could...
Depression in children and adolescents is a prevalent, recurrent, and frequently chronic disorder, representing a considerable public health burden (Birmaher, Ryan, Williamson, Brent, & Kaufman, 2005; Costello et al., 2002). Consequently, an understanding of the disorder is critical for future intervention and prevention efforts. Previous research attempting to clarify family...