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Coastal ocean variability off the coast of Taiwan in response to typhoon Morakot : river forcing, atmospheric forcing, and cold dome dynamics
(Massachusetts Institute of Technology, 2014)
The ocean is a complex, constantly changing, highly dynamical system. Prediction capabilities are constantly being improved in order to better understand and forecast ocean properties for applications in science, industry, ...
Synchronization on nulticore architectures
(Massachusetts Institute of Technology, 2014)
The rise of multicore computing has made synchronization necessary to overcome the challenge of sharing data between multiple threads. Locks are critical synchronization primitives for maintaining data integrity and ...
Optimizing procurement and handling costs in a utility
(Massachusetts Institute of Technology, 2014)
We propose a novel method to quantify the cost of activities involved in the picking portion of order fulfillment. We adapt the general method of picking cost quantification to the specific situation of TP&G, a publicly ...
Tradespace exploration for space system architectures : a weighted graph framework
(Massachusetts Institute of Technology, 2014)
Many systems undergo significant architecture-level change during their lifecycles as a result of exogenous system disturbances (e.g. budget reduction or changes in stakeholder requirements), failure to develop critical ...
Simulation development and analysis of attitude-control system architectures for an astronaut mobility unit
(Massachusetts Institute of Technology, 2014)
Control-moment gyroscopes (CMGs) are spacecraft attitude-control actuators which control the spacecraft's orientation and pointing. CMGs operate on electrical power and therefore obey the the conservation of angular momentum. ...
Architecting space communication networks
(Massachusetts Institute of Technology, 2014)
Reliable communication and navigation services are critical to robotic and human space missions. NASA currently provides them through three independent and uncoordinated network that consist of both Earth-based and space-based ...
Ion implantation for figure correction of high-resolution x-ray telescope mirrors
(Massachusetts Institute of Technology, 2014)
Fabricating mirrors for future high-resolution, large-aperture x-ray telescopes continues to challenge the x-ray astronomy instrumentation community. Building a large-aperture telescope requires thin, lightweight mirrors; ...
Dynamic modeling and control strategies for a micro-CSP plant with thermal storage powered by the Organic Rankine cycle
(Massachusetts Institute of Technology, 2014)
Organic Rankine cycle (ORC) systems are gaining ground as a means of effectively providing sustainable energy. Coupling small-scale ORCs powered by scroll expander- generators with solar thermal collectors and storage can ...
Controlling CRUD vapor chimney formation in LWRs through surface modification
(Massachusetts Institute of Technology, 2014)
Fouling has been a persistent problem for fluid-solid interfaces, varying from heat exchangers to ship hulls. In nuclear power plants, buildup of CRUD can accelerate corrosion, increase pressure drops, cause axial power ...
Coupled fluid structure simulations for application to grid-to-rod fretting
(Massachusetts Institute of Technology, 2014)
Grid-to-rod fretting (GTRF) has been the major cause of fuel leakage in Pressurized Water Reactors (PWRs) for the past ten years. It is responsible for over 70% of the fuel leaking in PWRs in the United States. The Consortium ...