|材料类型：||文献, 政府刊物, 国家级的政府刊物, 互联网资源|
|所有的著者/提供者：||United States. Government Accountability Office.|
|注意：||Title from title screen (viewed Mar. 5, 2009).
|描述：||iii, 72 p. : digital, PDF file.|
|详述：||System requirements: Adobe Acrobat Reader.; Mode of access: World Wide Web from GAO web site. Address as of 3/5/09: http://www.gao.gov/new.items/d09306sp.pdf; current access available via PURL.|
|其他题名：||National Aeronautics and Space Administration :
Assessments of selected large-scale projects
Assessments of selected projects
The National Aeronautics and Space Administration (NASA) plans to invest billions in the coming years in science and exploration space flight initiatives. The scientific and technical complexities inherent in NASA's mission create great challenges in managing its projects and controlling costs. In the past, NASA has had difficulty meeting cost, schedule, and performance objectives for some of its projects. The need to effectively manage projects will gain even more importance as NASA seeks to manage its wide-ranging portfolio in an increasingly constrained fiscal environment. Per congressional direction, this report provides an independent assessment of selected NASA projects. In conducting this work, GAO compared projects against best practice criteria for system development including attainment of knowledge on technologies and design as well as various aspects of program management. The projects assessed are considered major acquisitions by NASA, each with a life-cycle cost of over $250 million. No recommendations are provided.