Series of tests are conducted on road construction aggregates, not only for selection of appropriate aggregate which meets related specifications, but also for estimation of the long-term performance of aggregates particularly for economic and safety reasons.
Then a typical specification for TBP cost estimation is analyzed to identify the construction information that are required in TBP cost estimation and a typical specification for the requirement on design detail fulfillment is analyzed to identify the construction information that can be obtained from the design result.
A Chinese national mandatory specification for TBP cost estimation is introduced as a representative specification and is interpreted into a computer-processable format.
We applied six different methods for estimation of time of concentration, another important design specification and took the arithmetic mean value of all methods.
Studies micro-econometric models, including large sample theory for estimation and hypothesis testing, generalized method of moments, estimation of censored and truncated specifications, quantile regression, structural estimation, nonparametric and semiparametric estimation, panel data, bootstrapping, and simulation methods.
Each panel in Table 8 reports the quantile regression estimation results for various specifications for 1994, 2004 and 2010.
That's a pretty high rate of failure for estimation.
This is based on profiling, specifications, or estimation.
The findings were robust to model specifications and estimation methods.
We assess the sensitivity of the results across a wide set of alternative datasets, estimation specifications, variable specifications, and estimation methods.
