The Cerenkov Maser radiation is examined using linear and nonlinear theory. Linear theories for the gain in the single particle and the collective limits have been given previously. In this work, we show the connections between these two operating...
Stark-geometry photorefractive multiple quantum well (PR-MQW) spatial light modulators (SLMs) show promise for several optoelectronic applications such as high-speed image correlation and real-time 3-D holographic imaging. Their performance is...
Quality of life -- Evaluation. ; Health status indicators. ; Psychiatric rating scales. ; Mental illness -- Treatment -- Evaluation. ; Mental illness -- Treatment -- Economic aspects. ; Mental illness -- Treatment -- Social aspects.
Background. It is not clear whether a generic quality-of-life instrument can appropriately represent severe mental illness in an economic evaluation. This problem is particularly salient for resource-allocation decisions where policymakers compare...
Today''s fastest microprocessors, logic chips, and even memory chips employ dynamic logic as the key part to achieving advanced performance. Dynamic logic only retains the correct data state briefly and is far less robust than previous technologies...
The chemistry of indole can be reversed and redirected by the addition of powerful electron-withdrawing groups. Incorporation of a nitro group at C-2 or C-3 renders the adjacent carbon susceptible to nucleophilic attack. Nitro, cyano, and...
Visual pigments. ; Cellular signal transduction. ; Rhodopsin. ; G proteins. ; Phosphorylation. ; Photoreceptors. ; Retinal degeneration.
Arrestins are regulatory proteins that participate in the termination of G protein-mediated signal transduction. The major arrestin in the Drosophila visual system, Arrestin 2 (Arr2), has been demonstrated to be essential for the termination of the...
We present new appearance editing algorithms that allow artists to perform complex editing operations on spatially-varying appearance datasets such as images and measured materials, in an intuitive and efficient manner. The goal is to develop...
Human epidemiological and animal studies have associated inhalation of nickel dusts with increased incidence of pulmonary fibrosis. The current studies examined the hypothesis that nickel promotes pulmonary fibrosis by inhibiting fibrinolysis and...
Hematopoietic stem cells (HSCs) balance self-renewal with the continuous production of the suitable numbers of lineage-restricted progenitor cells. In this work we demonstrate that the Mixed lineage leukemia 1 (Mll1) gene is essential for this...
Brain mapping via EEG activation is a useful tool of basic neuroscience, and has wide clinical applications as well. The mapping is achieved by means of Event Related Potentials (ERPs), task-related changes in EEG time series. The methodology of...
Space perception. ; Motion perception (Vision). ; Vestibular apparatus.
Head Direction (HD) cells are neurons located primarily in the limbic system that fire as a function of directional heading in the horizontal, or yaw, plane in the freely moving animal. Our hypothesis is that the HD signal is the result of two...
The iodothyronine deiodinases, D1, D2, and D3, play a crucial role in determining the circulating and intracellular levels of active and inactive thyroid hormone (TH), and thus have a major effect on TH action during development and adulthood. The...
Electroencephalography -- Data processing. ; Epilepsy -- Diagnosis. ; Signal processing -- Mathematics. ; Time-series analysis. ; Wavelets (Mathematics).
Visual interpretation of the EEG associated with an epileptic seizure (ictal EEG) can be cumbersome and sometimes misleading, due to rapid seizure spread, limited spatial resolution and the fact that signals of interest are often obscured by...
Community health services -- United States -- Evaluation. ; Health care reform -- United States. ; Medical care -- United States -- Evaluation. ; Evidence-based medicine.
Intracellular transport between the ER and Golgi is mediated by vesicles that bud from donor membranes and then fuse with acceptor membranes. Bi-directional vesicle transport maintains distinct organelle composition through a process known as...
Genetic and immunological tools have been used to study two protozoan parasites, Plasmodium falciparum and Toxoplasma gondii. Toxoplasma gondii provides an excellent model for the study of protozoan parasite biology. Plasmodium falciparum causes...
An important mode of stabilization of cations in biochemical reactions is interaction with the π systems-of aromatic residues. As part of an investigation of the interaction of carbocations with aromatic π systems, a study of various model...
In large and complex networks such as the Internet and road networks, traffic routing is typically decentralized. Users in the network choose their routes independently to minimize their own delay, leading to complicated and nonintuitive outcomes...
Outcome assessment (Medical care). ; Aortic valve -- Surgery -- Complications. ; Aortic valve -- Surgery -- New England. ; Cardiovascular instruments Implanted.
Aortic valve disease is a frequent and serious disorder. Although aortic valve replacement (AVR) is arguably the only effective treatment, important issues remain unresolved in the care of patients with this disease. Recent studies have focused...
Dipterocarpaceae -- Ecology -- Indonesia -- Kalimantan Barat. ; Rain forest ecology -- Indonesia -- Kalimantan Barat. ; Herbivores -- Ecology.
A decline in population growth as the abundance of a species increases can stabilize population size. In Western Borneo, I found evidence for such density dependence in juveniles of the genus Shorea (Dipterocarpaceae) that dominates southeast...
The oculomotor system needs up-to-date information about eye position in order to make accurate saccades to stimuli in the environment. This thesis investigated how well the oculomotor system uses information about eye position to make a variety of...
We provide a theoretical model for a design involving a dc voltage biased Josephson junction (JJ) that strongly drives a high quality factor microwave cavity via the ac Josephson effect. We explore the rich classical dynamics of the resultant...
Modern distributed systems scatter sensors, storage, and computation throughout the environment. Ideally these devices communicate and share resources, but there is seldom motivation for a device''s owner to yield control to another user. We...
Information resources management -- Mathematical models. ; Database management -- Methodology. ; Change. ; World Wide Web.
Many modern information management tasks consist of an observer that must maintain current knowledge of a collection of changing information. The goal of this observer is to maintain acceptably accurate state estimates given limited observation...