نتایج جستجو برای: deviation log
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BACKGROUND Though left ventricular mass (LVM) predicts cardiovascular events (CVD) and mortality in African Americans, limited data exists on factors contributing to change in LVM and its prognostic significance. We hypothesized that baseline blood pressure (BP) and body mass index (BMI) and change in these variables over time are associated with longitudinal increases in LVM and that such incr...
We present a deterministic algorithm running in space O log2 n= log log n solving the connectivity problem on strongly unambiguous graphs. In addition, we present an O(log n) time-bounded algorithm for this problem running on a parallel pointer machine.
The document is part of an R package that allows reproducible research as discussed in Gentleman (2005) and Gentleman and Temple Lang (2007). With this package, called hbim, a researcher can redo all the calculations done to produce the figures in the main paper. Further one can extract the R computer code used to create those Figures and modify it as desired. Here is an outline of this documen...
For iid samples from a normal, uniform, or exponential distribution, we give exact formulas for the correlation between the sample variance and the sample range for all fixed n. These exact formulas are then used to obtain asymptotic expansions for the correlations. It is seen that the correlation converges to zero at the rate log n √ n in the normal case, the 1 √ n rate in the uniform case, an...
To define the optimal blood collection parameters for plasma human immunodeficiency virus type 1 (HIV-1) viral load testing, plasma HIV-1 RNA levels were quantitated with the NASBA HIV-1 RNA QT System from blood specimens that were collected, processed, and stored under a variety of conditions that might have affected HIV-1 RNA stability. We determined that when whole blood was processed within...
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