The Liquid Droplet Radiator in Space: A Parametric Approach
This study is a parametric investigation of the performance and operating characteristics of a cylindrical Liquid Droplet Radiator (LDR) for use in space. The LDR system mass per heat...
The Human Element in Space: Lessons from Antarctica
The human ability to adapt and perform in an extreme environment during periods of prolonged isolation is influenced by a number of social, cultural, and psychological parameters. These...
Safety Spending: Usually Begrudged, Often Misallocated
The author reviews the engineering decisions and statistical and other measures of project success in the use of Federal and state funds for roadside safety work in the Federal-aid Hazard...
Computer Assisted Mistakes
The proliferation of computer usage by design engineers will continue to generate change in practice. It will affect the process and production of design. It will affect the relationships...
America's Changing Demographics: Impacts on Transportation Requirements
Present and future demographic changes in the United States will significantly impact future transportation requirements. These changes include a redistribution of the nation's...
Damage Statistics of the September 19, 1985 Earthquake
Grupo ICA has participated in all stages of the actions and analysis of the effects of this quake aimed at taking advantage of this disastrous experience and has prepared a complete study...
Wetlands Mapping in the Coastal Zone: Progress Towards a National Digital Data Base
To date approximately 90 percent of the coastal zone of the lower 48 states has been mapped by the National Wetlands Inventory (NWI). A number of Federal and State agencies have expressed...
Estuarine Quality Use and Public Perception
Coastal environmental quality is determined on the basis of a relatively small number of biochemical and physical parameters which may bear little relation to the intended use of the water....
Identifying DepositionalAreas in Puget Sound
Depositional areas where fine sediments accumulate have been located through low-cost sediment studies instead of more costly current meter and settling trap measurements. Over 200 samples...
Guidelines for Reporting of Environmental Contaminant Data
To evaluate long-term temporal and large scale spatial trends in the absence of long-term monitoring programs, it is necessary to use data composited from other surveys and research projects....
The Effect of Erosion Upon Coastal Property Values
The effect of long-term severe erosion upon coastal property values is tested at a site along the Pacific Coast of Washington State. Statistical analysis of mean sales values suggests...
New Concepts in Cooperative Fisheries Programs
Coordinated through the National Marine Fisheries Service, these programs serve eight coastal states, two commonwealths, three fishery management councils, two interstate commissions,...
Coastal Flood Control Facility Design Parameters
The development of design parameters for a storm runoff detention facility located on lowlands adjacent to an estuary and discharging into the tidal zone are discussed. The parameters...
Parametric Analysis of Concrete Gravity Dams using Finite Element Analysis
More sophisticated means of analyses have been investigated to determine the accuracy and applicability of conventional methods to a range of parameters affecting stability. This paper...
Flow Around Islands in Rupert Bay: An Investigation of the Bed Friction Effect
Aerial photographs of transverse shear flows around islands in Rupert Bay, a shallow and turbid estuary in northern Quebec, were studied for effect of bed friction. The island wake depends...
Techniques for Measuring Flow and Sediment Parameters Near the Bed in Estuaries
The collection of accurate and meaningful field data is often the key to successful description and prediction of natural processes. The U. S. Army Engineer Waterways Experiment Station...
Analysis of Scour Problems at Louisiana Bridges
An ongoing project to automate the monitoring of scour measurements at Louisiana bridge sites is discussed. The data at selected bridges is digitized and put into computer files for analysis....
Embankment-Dam Breach Parameters
The study used data from 43 embankment-dam failures to develop equations that predict breach formation model parameters. These data include the failure mode, embankment characteristics,...
Statistical Analysis of Embankment Dam Failures
Data on embankment dam failures in the State of Colorado were analyzed. The analyses included 1,900 dams and covered a time period from 1799 to 1985. The three basic categories of data...
Analysis of Storm Event Suspended Sediment Data From Tennessee
In order to provide an understanding of transport patterns, historical suspended sediment data collected by TVA in the late 1930s were computerized and entered onto WATSTORE. Frequent...
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