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A method for detecting and recording seismic shear waves by means of angular accelerometers.
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This book constitutes the refereed proceedings of the 17th Australasian Conference on Information Security and Privacy, ACISP 2012, held in Wollongong, Australia, in July 2012. The 30 revised full papers presented together with 5 short papers were carefully reviewed and selected from 89 submissions. The papers are organized in topical sections on fundamentals; cryptanalysis; message authentication codes and hash functions; public key cryptography; digital signatures; identity-based and attribute-based cryptography; lattice-based cryptography; lightweight cryptography.
EMATs for Science and Industry comprises the physical principles of electromagnetic acoustic transducers (EMATs) and the applications to scientific and industrial ultrasonic measurements on materials. The text is arranged in four parts: -PART I is intended to be a self-contained description of the basic elements of coupling mechanism along with practical designing of EMATs for various purposes. There are several implementations to compensate for the low transfer efficiency of the EMATs. Useful tips to make an EMAT are also presented. -PART II describes the principle of electromagnetic acoustic resonance (EMAR), which makes the most of contactless nature of EMATs and is the most successful amplification mechanism for precise velocity and attenuation measurements. -PART III applies EMAR to studying the physical acoustics. New measurements emerged on three major subjects; in situ monitoring of dislocation behavior, determination of anisotropic elastic constants, and acoustic nonlinearity evolution. -PART IV deals with a variety of individual topics encountered in industrial applications, for which the EMATs are believed to the best solutions.