Digitization and integration of strong motion accelerograms /

Final report, issued Aug. 1977.

CANDE system manual /

Mode of access: Internet.

Reports of the late John Smeaton. F. R. S., made on various occasions, in the course of his employment as a civil engineer...

The miscellancous papers of John Smeaton... Comprising his communications to the Royal society, printed in the philosophical transactions, forming a fourth volume to his Reports... London, Printed for Longman, Hurst, Rees, Orme, and Brown, 1814. viii, 203 p. 14 pl. 34 cm.

Annual report FY ... of the Secretary of the Army on civil works activities.

Description based on: 1986, v. 2; title from cover.

Reports of the late John Smeaton, F.R.S., made on various occasions, in the course of his employment as a civil engineer ...

Mode of access: Internet.

Properties of engineering materials /

Includes index.

Paratransit resource guide /

Mode of access: Internet.

End connections of pretensioned I-beam bridges.

Mode of access: Internet.

CANDE : a modern approach for the structural design and analysis of buried culverts /

Mode of access: Internet.

Individual and Organizational Factors Influencing Technology Adoption for Construction Safety

Thesis (Master's)--University of Washington, 2016-06

Demographic and Geographic Heterogeneity between Subgroups of Cyclists

Thesis (Master's)--University of Washington, 2016-06

A Novel Framework for Real-time Traffic Flow Parameter Estimation from Aerial Videos

Thesis (Master's)--University of Washington, 2016-06

Comparative evaluation of microscopic car-following behavior

Microscopic traffic-simulation tools are increasingly being applied to evaluate the impacts of a wide variety of intelligent transport, systems (ITS) applications and other dynamic problems that are difficult to solve using traditional analytical models. The accuracy of a traffic-simulation system depends highly on the quality of the traffic-flow model at its core, with the two main critical components being the car-following and lane-changing models. This paper presents findings from a comparative evaluation of car-following behavior in a number of traffic simulators [advanced interactive microscopic simulator for urban and nonurban networks (AIMSUN), parallel microscopic simulation (PARAMICS), and Verkehr in Statiten-simulation (VISSIM)]. The car-following algorithms used in these simulators have been developed from a variety of theoretical backgrounds and are reported to have been calibrated on a number of different data sets. Very few independent studies have attempted to evaluate the performance of the underlying algorithms based on the same data set. The results reported in this study are based on a car-following experiment that used instrumented vehicles to record the speed and relative distance between follower and leader vehicles on a one-lane road. The experiment was replicated in each tool and the simulated car-following behavior was compared to the field data using a number of error tests. The results showed lower error values for the Gipps-based models implemented in AIMSUN and similar error values for the psychophysical spacing models used in VISSIM and PARAMICS. A qualitative drift and goal-seeking behavior test, which essentially shows how the distance headway between leader and follower vehicles should oscillate around a stable distance, also confirmed the findings.

Regional-scale, fully coupled modelling of stream-aquifer interaction in a tropical catchment

The planning and management of water resources in the Pioneer Valley, north-eastern Australia requires a tool for assessing the impact of groundwater and stream abstractions on water supply reliabilities and environmental flows in Sandy Creek (the main surface water system studied). Consequently, a fully coupled stream-aquifer model has been constructed using the code MODHMS, calibrated to near-stream observations of watertable behaviour and multiple components of gauged stream flow. This model has been tested using other methods of estimation, including stream depletion analysis and radon isotope tracer sampling. The coarseness of spatial discretisation, which is required for practical reasons of computational efficiency, limits the model's capacity to simulate small-scale processes (e.g., near-stream groundwater pumping, bank storage effects), and alternative approaches are required to complement the model's range of applicability. Model predictions of groundwater influx to Sandy Creek are compared with baseflow estimates from three different hydrograph separation techniques, which were found to be unable to reflect the dynamics of Sandy Creek stream-aquifer interactions. The model was also used to infer changes in the water balance of the system caused by historical land use change. This led to constraints on the recharge distribution which can be implemented to improve model calibration performance. (c) 2006 Elsevier B.V. All rights reserved.