Measurement of the penetration depth λ(T) as a function of temperature using millimeter wave transmission in the range 130-500GHz are reported for three YBa<Subscript>2</Subscript> (YBCO) laser ablated thin films. Two films, deposited on a LaAlO<Subscript>3</Subscript> substrate (T <Subscript> c </Subscript>=90.2 K), exhibit a narrow resistive transition (0.3...</subscript></subscript></subscript>

A major concern of business with respect to transport-charging interventions is the context of revenue-investment policy, particularly how the timing of improvements may alter the time lags between fewer car journeys and more public transport journeys, and the problems for business in the...

The aim of this paper is to review the emerging evidence on competition in the long distance passenger rail service. This draws on the three bodies of evidence. In section 2, we examine the ex-ante evidence from theoretical models based on Preston (2008a). In section 3, we examine the ex-post...