In-situ monitoring of the dynamic contact force between catenary and pantograph is very important for the quality evaluation of pantograph catenary current collection.A Hot Cereals monitoring method based on strain response was proposed to invert the value and position of the dynamic contact force between catenary and pantograph.The measurement pri

Social justice as a concept is both widely used and widely misunderstood.It is also, increasingly, a term of derision.In this Think Piece I explain why it is important to have a clear sense of what we mean by social justice, but to do so without tying it to a precise definition.Rather Vacuum Pet Brush we need to work with broad understandings of so