The definition of sustainability includes three fundamental pillars: economic, environmental, and social. Studies the economic impact on civil engineering infrastructures have been focused cost reduction. It is not necessarily in line with due to lack other factors. Moreover, social pillar assessment has weakly developed compared environmental ones. essential focus evaluate clear indicators tha...

This paper describes the application of the ACFM technique for weld inspection and focuses on recent experience in both Europe and Central America in the use of the technique for the inspection of steel storage tanks. Inspection of the tank floor is usually conducted using magnetic flux leakage methods but it is recognised that this cannot be applied to the detection of cracking in the welds jo...

This paper reviews the theoretical principles of subspace system identification as applied to the problem of estimating black-box state-space models of support-excited structures (e.g., structures exposed to earthquakes). The work distinguishes itself from past studies by providing readers with a powerful geometric interpretation of subspace operations that relates directly to theoretical struc...

A computer controlled contaminant detection systems based on high-Tc Superconducting Quantum Interference Device (SQUID) for food and drink have been designed and constructed. The systems we have developed are the High-Tc SQUID based systems, which are covered with waterproof stainless steel plates and acceptable to HACCP (Hazard Analysis and Critical Control Point) program. One system is for f...

It was July 7, 1912, and Harry Houdini, ir the company of a bevy of dutiful report ers, was going to perform one of his greatest escapes, from a barge floating in the middle of the East River in New York. First he was shackled in leg irons two pairs of handcuffs, and elbow irons. Then he was crammed into a sturdy wooden crate, 40 inches x 22 inches x 24 inches, and the lid was nailed shut and r...