Bridge inspection is a pathway to bridge condition rating assessment, and is an essential element of any bridge management system (BMS). The success of a BMS is highly dependent on the quality of bridge inspection outcomes and accurate estimation of future bridge condition ratings. However, existing visual bridge inspection methods suffer several limitations due to human subjective judgment. In...

Highway bridge infrastructure is a key aspect of the US transportation system. Efficient maintenance is important for preserving the integrity and improving the condition of aging national bridge infrastructure. Highway bridge condition is typically assessed using visual inspections and accompanying non-destructive field tests. This paper presents a solution that leverages low-cost Structural H...

Recent experimental research has shown that ordinary unbounded steel reinforced elastomeric bearings (SREBs) can be considered as an attractive cost-effective option for the seismic isolation of highway bridges. To further investigate its benefits, the current study is focused on the seismic risk assessment of an optimally designed highway bridge isolated by SREB system. A typical three-span hi...

Although there seems to be no (formal) way of proving the validity of an AI system, the authors present some ideas on developing a validity statement based on a Turing-test methodology with a set of "good" 1 test cases. The solution of these test cases will be rated by a panel of expert validators. The methodology is called the Turing-test, because a random process of distributing the test case...

The performance of a case-based diagnosis system should be validated before it can be applied in a critical operational environment. This paper proposes a framework for a validation process of case-based diagnosis systems. This framework is developed from existing work on expert system validation and on evaluation and improvement of the performance of casebased reasoning systems. First results ...

Over the past six years, there have been some interesting trends in expert system activity worldwide (Lee, Liebowitz, and Chae 1996; Liebowitz 1996, 1994a, 1994b, 1991; Liebowitz et al. 1996; CantuOrtiz 1991; Lee et al. 1991; Suen 1991; Zarri 1991). An excellent way to gain a global perspective on expert system technology, applications, and management is to examine the world congresses on exper...