The Meaning of Patent Citations: Jaffe , Manuel Trajtenberg , Michael S.
Productivity, Innovation, and Entrepreneurship A survey of recent patentees was conducted to elicit their perceptions regarding the importance of their inventions, the extent of their communication with other inventors, and the relationship of both importance and communication to observed patent citations. Evidence from Patent Citations.
Development of the American Economy. Economic Fluctuations and Growth.
International Finance and Macroeconomics. International Trade and Investment.
The Women Working Longer Project. Illinois Workplace Wellness Study.
The need to predict scenarios of change led to the development of a new seamless, high-resolution digital elevation model DEM of the Bay — Delta that can be used by modelers attempting A high-resolution meter per pixel digital elevation model DEM was created for the Sacramento-San Joaquin Delta using both bathymetry and topography data. This DEM is the result of collaborative efforts of the U.
Washover deposits on Fire Island, New York, from Hurricane Sandy in were investigated a year after the storm to document the sedimentary characteristics of hurricane washover features. Sediment data collected in the field includes stratigraphic descriptions and photos from trenches, bulk sediment samples, U-channels, and gouge and push cores Morphodynamic equilibrium is a widely adopted yet elusive concept in the field of geomorphology of coasts, rivers and estuaries.
Based on the Exner equation, an expression of mass conservation of sediment, we distinguish three types of equilibrium defined as static and dynamic, of which two different types exist. Other expressions such as Estuarine tidal mudflats form unique habitats and maintain valuable ecosystems.
Erosion and deposition from tsunamis record information about tsunami hydrodynamics and size that can be interpreted to improve tsunami hazard assessment. We explore sources and methods for quantifying uncertainty in tsunami sediment transport modeling. Uncertainty varies with tsunami, study site, available input data, sediment grain size, and Suspension of sand in the surf zone is intermittent.
A blog from last November brought to light a memo, compiled by former Planned Parenthood vice president Fredrick Jaffe, that depicts rather. Harry Jaffe, a longtime chronicler of the people and politics of Washington, D.C., writes an opinion column for NBC Washington's First Read.
Especially striking in a time series of concentration are periods of intense suspension, suspension events, when the water column suspended sediment concentration is an order of magnitude greater than the mean concentration. The prevalence, timing, and contribution of suspension events to cross The Indian Ocean and Tohoku-oki disasters dramatically demonstrated the destructiveness and deadliness of tsunamis.
For the assessment of future risk posed by tsunamis it is necessary to understand past tsunami events. Recent work on tsunami deposits has provided new information on paleotsunami events, including their recurrence interval Skip to main content.
Science Publications Filter Total Items: Year Select Year Geological Survey Open-File Report , 24 p. Pacific Coastal and Marine Science Center.