Propagation of guided waves in a solid rod surrounded by infinite media is an interesting research topic of practical importance. One important application is ultrasonic nondestructive evaluation (NDE) of rock bolts. Rock bolts are inserted into the mixture of rock and concrete to ensure the stability of the groundwork. For this research topic, it is important to study the propagation of guided...

We compared naturally baited trapping systems to synthetically baited funnel traps and fallen trap trees for suppressing preoutbreak spruce beetle, Dendroctonus rufipennis Kirby, populations. Lures for the traps were fresh spruce (Picea spp.) bolts or bark sections, augmented by adding female spruce beetles to create secondary attraction. In 2003, we compared a naturally baited system ("bolt tr...

Cloud providers routinely schedule multiple applications per physical host to increase cost efficiency. The resulting interference in shared resources leads to performance degradation and, more importantly, security vulnerabilities. Interference can leak important information ranging from the placement of a service to confidential data, like private keys. We present Bolt, a practical system tha...

Abstract The construction of shield tunnel often occurs in composite stratum, so it is great significance to study the law surface deformation under working condition stratum order ensure safety construction. Based on actual engineering, ground soil caused by upper sand and lower rock studied using method field measurement. results show that: width coefficient settlement trough basically remain...