Modal analysis is a discipline that has developed considerably during the last 30 years.

Building Wireless Sensor Networks: Theoretical and Practical Perspectives presents the state of the art of wireless sensor networks (WSNs) from fundamental concepts to cutting-edge technologies.

Validity: Theoretical Development and Integrated Arguments provides a historical overview of validity, targeting developments in both the UK and the US. It explores theoretical notions of validity as well as pragmatic validation practices and expands the arguments that need to be attended to document quality.