ANCOVA: A global test based on a robust measure of location or quantiles when there is curvature

For two independent groups, let $M_j(x)$ be some conditional measure of location for the $j$th group associated with some random variable $Y$, given that some covariate $X=x$. When $M_j(x)$ is a robust measure of location, or even some conditional quantile of $Y$, given $X$, methods have been proposed and studied that are aimed at testing $H_0$: $M_1(x)=M_2(x)$ that deal with curvature in a flexible manner. In addition, methods have been studied where the goal is to control the probability of one or more Type I errors when testing $H_0$ for each $x \in \{x_1, \ldots, x_p\}$. This paper suggests a method for testing the global hypothesis $H_0$: $M_1(x)=M_2(x)$ for $\forall x \in \{x_1, \ldots, x_p\}$ when using a robust or quantile location estimator. An obvious advantage of testing $p$ hypotheses, rather than the global hypothesis, is that it can provide information about where regression lines differ and by how much. But the paper summarizes three general reasons to suspect that testing the global hypothesis can have more power. 2 Data from the Well Elderly 2 study illustrate that testing the global hypothesis can make a practical difference.Comment: 23 pp 2 Figure

Thin film strain transducer

A strain transducer system and process for making the same is disclosed. A beryllium copper ring having four strain gages is electrically connected in Wheatstone bridge fashion to the output instrumentation. Tabs are bonded to a balloon or like surface with strain on the surface causing bending of a ring which provides an electrical signal through the gages proportional to the surface strain. A photographic pattern of a one half ring segment as placed on a sheet of beryllium copper for chem-mill etch formation is illustrated

"Bravest of the brave": the making and re-making of 'the Gurkhas', 1857-2009

This paper explores the history of Gurkha recruiting from the mid-nineteenth century, charting the emergence and subsequent reworkings of a discourse of Nepalese 'martial aptitude.

High Tech Professionals Are Hard to Organize Too

[Excerpt] It is unlikely that any technical and professional employees will be organized in non-union high tech firms until more blue-collar production workers become union members. There are, however, some high technology companies which already have heavily unionized blue-collar workforces. Two industrial unions have recently tried to recruit new members among the engineering and computer personnel at such firms. The experiences of the Communications Workers of America (CWA) at AT&T Technologies and the International Union of Electronic, Electrical, Technical, Salaried, & Machine Workers (IUE) at Raytheon indicate that the obstacles facing unions in this type of high tech organizing are formidable

Hypervelocity impact effects Semiannual progress report

Effects of target strength on cratering process caused by impact of hypervelocity projectile