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Now showing items 11-20 of 30
A stochastic techno-economic comparison of alternative jet fuel production pathways
(Massachusetts Institute of Technology, 2017)
This study quantifies and compares the costs of production for six alternative jet fuel pathways using consistent financial and technical assumptions. Uncertainty was propagated through the analysis using Monte Carlo ...
Systems-level analysis of On Demand Mobility for aviation
(Massachusetts Institute of Technology, 2017)
On Demand Mobility (ODM) is an emerging transportation concept that leverages pervasive telecommunication connectivity to enable the real-time matching of consumers with transportation service providers. Having experienced ...
Collaborative competition for crowdsourcing spaceflight software and STEM education using SPHERES Zero Robotics
(Massachusetts Institute of Technology, 2012)
Crowdsourcing is being researched as a technique to develop small-scale spaceflight software by issuing open calls for solutions to large crowds of people with the incentive of prizes. There is widespread investment of ...
Impact of alternative nuclear fuel cycle options on infrastructure and fuel requirements, actinide and waste inventories, and economics
(Massachusetts Institute of Technology, 2009)
The nuclear fuel once-through cycle (OTC) scheme currently practiced in the U.S. leads to accumulation of uranium, transuranic (TRU) and fission product inventories in the spent nuclear fuel. Various separation and recycling ...
A technical, financial, and policy analysis of the RAMSES RFID inventory management system for NASA's International Space Station: prospects for SBIR/STTR technology infusion
(Massachusetts Institute of Technology, 2010)
Engineering, management, and social science methodologies have been employed to analyze a new asset tracking and management system for human spaceflight applications. The Massachusetts Institute of Technology and Aurora ...
Astronaut Extravehicular Activity : safety, injury & countermeasures; &, Orbital collisions & space debris : incidence, impact & international policy
(Massachusetts Institute of Technology, 2010)
Extravehicular Activity (EVA) spacesuits are a key enabling technology which allow astronauts to survive and work in the harsh environment of space. Of the entire spacesuit, the gloves may perhaps be considered the most ...
Assessing and mitigating vulnerability chains in model-centric acquisition programs
(Massachusetts Institute of Technology, 2018)
Acquisition programs increasingly use model-centric approaches, generating and using digital assets throughout the lifecycle. Model-centric practices have matured, yet in spite of sound practices there are uncertainties ...
A cost model for testing unmanned and autonomous systems of systems
(Massachusetts Institute of Technology, 2011)
The evolutionary nature of Unmanned and Autonomous Systems of Systems (UASoS) acquisition needs to be matched by equally evolutionary test capabilities in the future. There is currently no standard method to determine what ...
Deployment related mental health care seeking behaviors in the U.S. military and the use of telehealth to mitigate their impacts on access to care
(Massachusetts Institute of Technology, 2012)
Interviewees report that groups of service members returning from Iraq and Afghanistan often require substantial amounts of mental health care, causing surges in demand at military hospitals. These hospitals have difficulty ...
Unique abilities of hopper spacecraft to enable national objectives for solar system exploration
(Massachusetts Institute of Technology, 2011)
In comparison with conventional and other conceived approaches, hopper spacecraft offer unique advantages in exploring Solar System objects beyond Earth. The present work began with a survey - based on documents from the ...