The accelerating trend toward Faster, Better, Cheaper (FEE) missions places increasing emphas is on the trade-offs between requirements and risk to reduce cost and development times, while still improving quality and reliability. The Risk/Requirenlents Trade-off Guidelines discussed in this paper are part of an integrated approach to address the main issues by focusing on the sum of prevention,...

A Holocene lake sediment record spanning the past 7300 years from Wishart Lake in the Turkey Lakes Watershed in the Hemi-Boreal of central Ontario, Canada, was used to evaluate the potential drivers of long-term change in diatom assemblages at this site. An analysis of diatom assemblages found that benthic and epiphytic taxa dominated the mid-Holocene (7300-4000 cal yr BP), indicating shallow, ...