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Now showing items 2781-2790 of 2929
Reconfigurable Microstrip Bandpass Filters, Phase Shifters Using Piezoelectric Transducers, and Beam-scanning Leaky-wave Antennas
(2012-07-16)
In modern wireless communication and radar systems, filters play an important role in getting a high-quality signal while rejecting spurious and neighboring unwanted signals. The filters with reconfigurable features, such ...
Statistical Inference for Costs and Incremental Cost-Effectiveness Ratios with Censored Data
(2012-07-16)
Cost-effectiveness analysis is widely conducted in the economic evaluation of new treatment options. In many clinical and observational studies of costs, data are often censored. Censoring brings challenges to both medical ...
Custom Device for Low-Dose Gamma Irradiation of Biological Samples
(2012-02-14)
When astronauts travel in space, their primary health hazards are high-energy cosmic radiations from galactic cosmic rays (GCR). Most galactic cosmic rays have energies between 100 MeV and 10 GeV. For occupants inside of ...
Problems with Science Teaching and Learning for English Language Learners in One Diverse Elementary School
(2012-10-19)
This qualitative study centered on science instruction and learning that occurred in a Title I elementary school in a suburban district in southeast Texas. Twelve teachers were interviewed in order to understand their ...
Prediction of Parametric Roll of Ships in Regular and Irregular Sea
(2012-02-14)
This research was done to develop tools to predict parametric roll motion of ships in regular and irregular sea and provide guidelines to avoid parametric roll during initial design stage. A post Panamax hull form (modified ...
Inter-kingdom Recognition of Norepinephrine by E. Coli : Identification of the Receptors Involved in Chemotaxis
(2012-10-19)
There are approximately 10^14 bacteria belonging to nearly 1000 different species in the human gastrointestinal (GI) tract that co-exist with host cells. Within the GI tract, signaling molecules secreted by both eukaryotic ...
Angular Anisotropy of Correlated Neutrons in Lab Frame of Reference and Application to Detection and Verification
(2012-07-16)
It has been shown that neutrons emitted from the same 252Cf fission event are preferentially detected within small angles of each other and at angles around 180 degrees. The distribution of this angular anisotropy is ...
Development of Modeling Techniques for A Generation IV Gas Fast Reactor
(2012-10-19)
Worldwide, multiple countries are investing a great deal of time and energy towards developing a new class of technologically advanced nuclear reactors. These new reactors have come to be known as the Generation IV (Gen ...
Roaming in the Dark: Deciphering the Mystery of NO3 --> NO + O2 Photolysis
(2012-07-16)
The focus of this dissertation is to decipher the previously unknown reaction dynamics of NO3 photodissociation. Although the NO + O2 products are known to catalyze atmospheric ozone destruction, the mechanism by which ...
Exploring Volunteered Geographic Information (VGI) for Emergency Management: Toward a Wiki GIS Framework
(2011-10-21)
The past three years have witnessed unprecedented growth of user-generated
volunteered geographic information (VGI) on the Web. Although scholars, decision
makers, and citizens have recognized the potential value of VGI ...