Title of Document: BASELINE ADJUSTMENT FOR ORDINAL COVARIATES BY INDUCING A PARTIAL ORDERING IN RANDOMIZED CLINICAL TRIALS. Na An, Master of Arts, 2007 Directed By: Professor Paul J. Smith Department of Mathematics In two-armed randomized clinical trials (RCTs) designed to compare a new treatment with a control, a key endpoint is often measured and analyzed both at baseline and after treatment ...

Mobile phones running open operating systems such as Google Android will soon be the norm in cellular networks. These systems expose previously unavailable phone and network resources to application developers. However, with increased exposure comes increased risk. Poorly or maliciously designed applications can compromise the phone and network. While Android defines a base set of permissions t...

By applying inverse statistics to financial data it has recently been found from empirical studies that indices exhibit a pronounced gain-loss asymmetry [M.H. Jensen, Phys. Rev. Lett. 83 (1999) 76; I. Simonsen, M.H. Jensen, A. Johansen, Eur. Phys. J. B 27 (2002) 583; M.H. Jensen, A. Johansen, I. Simonsen, Physica A 324 (2003) 338]. This gain-loss asymmetry appears to have some similarities with...

We investigated the impact of viewing time and fixations on visual memory for briefly presented natural objects. Participants saw a display of eight natural objects arranged in a circle and used a partial report procedure to assign one object to the position it previously occupied during stimulus presentation. At the longest viewing time of 7,000 ms or 10 fixations, memory performance was signi...

Five sites (urban, suburban, new township, industrial, and rural) were selected and sampled for total suspended particulates (TSP) using high-volume samplers. The TSP were then analysed for their lead and cadmium content in 3 extraction fractions. While the most polluted sites for atmospheric lead and cadmium were different, namely the BBP (Pudu Fire Station) urban and UPM (Universiti Pertanian...

Although price dispersion remains a prominent feature of international and domestic markets, the development e-commerce has been increasingly promoting uniform pricing. Existing studies suggest that online competition, especially from Amazon, reduces within individual retailer's chains among stores in different chains. Amazon's effect on rivals have analyzed, little is known about its pricing a...