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spec: Here is an intriguing application of that idea that I found in the Post Versalog Slide Rule Instructions , Frederick Post Company , 1963 . The psychometric properties provide information regarding the reliability of the various groups of items , as well as a difficulty index ( percent of patients who scored this item correctly ) , and an item to group total correlation for each item . An ATO official told us that once an RCM process is implemented , staff will be able to expand the selection of maintenance approaches by incorporating those shown in table 1 . Huge curtains of green and red light flickered and danced across the northern skies , whilst the more stunning displays filled the whole sky , from horizon to horizon , with green and red beams forming a giant umbrella of light . Any of these acts , if it damages another 's land likely would give rise to a tort claim . The editor has two immediate benefits : ( 1 ) because it is Web-based , it is hardware independent and usable on any machine that can run standard Web browsers , thus permitting ready access by collaborators at the other InterMed sites , and ( 2 ) it shields developers from the syntactic details of the Ontolingua language , allowing editing of the vocabulary content without requiring knowledge of Ontolingua ( or even a local installation of Ontolingua ) . The ensemble cast and a multi-threaded plot ( signature elements of Brunner 's style ) weave together in a way that reinforces the novel 's thematic movement from isolation to unification . The Army alone estimates that almost 60,000 contractor employees currently support ongoing military operations in Southwest Asia and has spent about $ 15.4 billion on its single largest support contract - - the Logistics Civil Augmentation Program ( LOGCAP ) - - between 2001 and 2004 . This exemption from natural gas tax for hydrocarbons produced from a Texas experimental research and recovery well only applies to gas wells that have been accepted by the Texas Railroad Commission into the Texas Experimental Research and Recovery Activity ( TERRA ) . Zinc improves growth and enhances the body 's ability to respond to infection , and vitamin A plays an essential role in the immune response and is believed to be necessary for host resistance to malaria .