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Now showing items 81-90 of 173
Blade dynamics and flux measurements for model seagrass blades in waves and currents
(Massachusetts Institute of Technology, 2014)
Complex interactions between flow conditions, blade posture, and mass transport processes, represent a challenge to fully understanding the influence of hydrodynamic conditions on the flux of nutrients to the blade surface ...
Evaluation of probabilistic underspecification as a method for incorporating uncertainty into comparative life cycle assessments
(Massachusetts Institute of Technology, 2012)
Life cycle assessments are quickly becoming a crucial method through which the environmental impacts of products or processes are evaluated. A concern with current practice, however, is that the use of deterministic values ...
Development of a tool for forecasting a warehouse facility footprint and enabling rapid scenario analysis
(Massachusetts Institute of Technology, 2010)
Companies in every industry, including both manufacturers and service providers, must make decisions about their operational footprint -the amount of building space required for business needs such as storing inventory and ...
Implementing change through a supplier evaluation process
(Massachusetts Institute of Technology, 2010)
With increased global competition, companies find that they must adjust and adapt to a supply chain model that incorporates more strategic suppliers. Pratt & Whitney, a division of United Technology Corporation, is no ...
Investigation of the effect of a circular patch of vegetation on turbulence generation and sediment deposition using four case studies
(Massachusetts Institute of Technology, 2012)
This study describes the spatial distribution of sediment deposition in the wake of a circular patch of model vegetation and the effect of the patch on turbulence and mean flow. Two difference types pf vegetation were used ...
Dynamic range implications for the effectiveness of semi-active tuned mass dampers
(Massachusetts Institute of Technology, 2010)
The response of tall buildings subjected to dynamic wind loads has been widely studied. For excitations approaching the resonant frequencies of the structure, ensuring serviceability is a significant concern. One traditional ...
Transport in lattice fracture networks : concentration mean and variance
(Massachusetts Institute of Technology, 2010)
We study transport in fractured systems using a stochastic particle tracking approach. We represent a fractured system as a two-dimensional lattice network system where the transport velocity in each fracture is a random ...
Modeling transient flow in intermittent water supply System
(Massachusetts Institute of Technology, 2017)
Water distribution systems in cities throughout South Asia (and many other countries) only supply water on an intermittent basis (currently averaging less than 5hrs/day in most Indian cities). Intermittent Water Supply ...
Predicting corrosion on protected buried steel natural gas distribution pipelines
(Massachusetts Institute of Technology, 2015)
PG&E uses cathodic protection, which connects the pipeline to sacrificial anodes that corrode instead of the pipeline, to prevent corrosion on its buried steel natural gas pipelines. However, corrosion leaks still occur. ...
Detection of defects in FRP-reinforced concrete with the acoustic-laser vibrometry method
(Massachusetts Institute of Technology, 2013)
Fiber-reinforced polymer (FRP) strengthening and retrofitting of concrete structural elements has become increasingly popular for civil infrastructure systems. When defects occur in FRP-reinforced concrete elements at the ...