Megaproject Monitoring by Satellite ? InSAR-based Settlement-time History: Measuring Hundreds of Thousands of Points, Several Times a Month, Across an Entire City
Satellite-based interferometric synthetic aperture radar, or InSAR, has gained unequivocal importance as a routine and precise monitoring method for large and small areas alike. Historical datasets allow...
Probabilistic Analysis of Long-Term Aquifer Recharge
Long-term time series of aquifer recharge and other aquifer fluxes (aquifer discharge, groundwater extraction) are essential to monitor and understand aquifer processes. This paper presents...
Estimating the Return Period of Multiyear Droughts
Characterizing the return period of hydrologic events has been an important subject in water resources planning and management studies for many decades. The alternative approach has been...
September Eleventh, The Days After, The Days Ahead
Civil engineers assumed prominent roles in the aftermath of the terrorist attacks on the World Trade Center and the Pentagon and are leading the efforts to evaluate not only the performance...
Conditional Priority at Controlled Intersections to Improve Public Transport Punctuality
The market share of public transport depends highly on the travel time ratio to private transport. The public transport travel time includes among other elements waiting times at stops...
New York City's Socioeconomic Characteristics, Land Use and Travel Patterns
The dense land use of New York City is the defining characteristic of travel in New York City. The large number of people who live and work in a relatively small landmass reduces the need...
Third World Markets: Anticipating the Risks
The market for construction in lesser-developed nations is estimated at $750 billion. Clearly, these nations represent an important emerging market for engineering and construction firms,...
Safety in a Designer's Hands
Although contractors face safety issues every day, engineers and architects have traditionally not addressed construction site safety in project designs. But there are design practices...
Rapid Redecking
A contractor replaced nearly 7,000 m� of steel grid roadway deck filled with microsilica concrete on the Canadian crossing of the Thousand Islands bridge system more than one year ahead...
Looking for Evidence of Climatic Change in Streamflow Time Series
The principle of stationarity of a streamflow time series has been very commonly assumed in the analysis of hydrologic time series. Some common types of non-stationarity in time series,...
Runoff Forecasting Using a Local Approximation Method
Forecasting of hydrological events, particularly floods, is an important topic of concern for hydrologists. Flood hazards can be prevented or their effects minimized if prior warning of...
SAMS: Software for Simulating Streamflow Series
This paper introduces SAMS, a computer software developed for the analysis, modeling, and generation of hydrologic time series such as annual and monthly streamfiows. It is written in...
An Engineering Information System Application for Water Supply and Distribution Systems
Engineering information systems are characterized by both static infrastructure and dynamic time dependent data. Telemetered readings can often be relatively substantial over an extended...
Measuring and Modeling Time Dependent Soil Behavior
This proceedings presents a series of papers on both laboratory and field investigations, as well as constitutive modeling efforts, that all deal with the time dependence of soils and...
Behavior of RC Beams under Sustained Load
Experimental results of eight reinforced concrete beams under 3-month's sustained load, with the ratio of shear span to depth equal to 2.5, are reported. It is shown by tests that the...
Time-Dependent Load-Distribution Behavior of Parallel-Member Wood Systems
The effect of differential member creep on the load-distribution behavior of parallel-member wood systems is examined. Variability in the creep response of the individual component members...
Observations Related to the Use of the Sigma Coordinate Transformation for Estuarine and Coastal Modeling Studies
One of the common techniques used in application of time-dependent, three-dimensional models addressing estuarine and coastal environmental problems is the sigma coordinate transformation....
A Method for Locating Spikes in a Measured Time Series
Raw directional wave sample time series are frequently contaminated with spikes from various sources. The standard procedure in correctly editing these time series includes locating and...
Evolutionary Fourier Analysis of Wave Data
A new method is presented for analyzing nonstationary water level height time series. The usual assumption of pseudo-stationary intervals is avoided and the wave spectra can be changing...
Nighttime Cement Concrete Pavement Replacement Seattle-Tacoma International Airport
Several airfield improvement projects are currently underway at Seattle-Tacoma International Airport (Sea-Tac), many of which are being constructed using cement concrete pavement. Due...
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