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Crushed rock thermal energy storage & nuclear technology : option space & economic impacts
(Massachusetts Institute of Technology, 2018)
Increasing amounts of intermittent renewables have led to zero and negative priced electricity at times of peak wind and solar production. The volatility added to the grid by renewables and low prices at peak production ...
Estimating hydrologic fluxes, crop water use, and agricultural land use in China from multiple data sources
(Massachusetts Institute of Technology, 2016)
Crop production has significantly altered the terrestrial environment by changing land use (Ramankutty et al., 2008) and by altering the water cycle through both co-opting rainfall and surface water withdrawals (Postel et ...
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 ...
Enhancing astronaut mobility through spacesuit kinematics and interactive space outreach
(Massachusetts Institute of Technology, 2016)
Human spaceflight programs are facing new challenges rising from the evolution of the exploration agenda, as well as the changing international panel of actors. Planetary exploration missions will require intensive ...
Transfer learning for predictive models in MOOCs
(Massachusetts Institute of Technology, 2016)
Predictive models are crucial in enabling the personalization of student experiences in Massive Open Online Courses. For successful real-time interventions, these models must be transferable - that is, they must perform ...
Effects of intermittent generation on the economics and operation of prospective baseload power plants
(Massachusetts Institute of Technology, 2017)
The electricity system is transitioning from a system comprised primarily of dispatchable generators to a system increasingly reliant on wind and solar power-intermittent sources of electricity with output dependent on ...
FairML : ToolBox for diagnosing bias in predictive modeling
(Massachusetts Institute of Technology, 2016)
Predictive models are increasingly deployed for the purpose of determining access to services such as credit, insurance, and employment. Despite societal gains in efficiency and productivity through deployment of these ...
The economics of cryptographic trust : understanding certificate authorities
(Massachusetts Institute of Technology, 2016)
Certificate Authorities (CAs) play a crucial role in HTTPS, the mechanism that secures all of the web's most important communication; if it has a log-in page, it must use HTTPS. However, recent history is littered with ...
Hydrophobicity of rare-earth oxide ceramics and their application in promoting sustained drop-wise condensation
(Massachusetts Institute of Technology, 2016)
Hydrophobic surfaces that are robust can have widespread applications in various industries including energy, hydropower, and transportation. In particular, hydrophobic materials promote dropwise condensation, which results ...
Emergence of second-generation low earth orbit satellite constellations : a prospective technical, economic, and policy analysis
(Massachusetts Institute of Technology, 2018)
Modern proposals for Low Earth Orbit (LEO) satellite constellations underscore the tremendous potential and versatility of distributed spacecraft missions (DSMs), but they have also begun to stress the limits of the existing ...