High energy spin waves in BCC iron

We have studied the dispersion relation of the spin wave excitations in bcc iron by neutron inelastic scattering at the spallation neutron source ISIS. Magnetic intensity was followed up to 550meV along the (100) direction. The general form of the dispersion curve is in qualitative agreement with that calculated from a spin-polarised band model, and in particular we have confirmed the prediction of propagating modes extending above 300meV. 7 refs., 3 figs

An evaluation of clients' needs and responsibilities in the construction process

The importance of clients' responsibilities in the construction process, as perceived by both clients and consultants, was assessed through a structured questionnaire survey. Using the relative index ranking technique, clients' fundamental needs and responsibilities in the construction process were analysed and ranked. Results indicate that the four most important needs are: functionality of the building, safety of the building, quality of the building, and completion time. The four most important clients' responsibilities identified by clients themselves are: planning/design, project finance, project implementation/management, and project definition/formulation. The four most important clients' responsibilities to project consultants are: project finance, project definition/formulation, planning/design, and project implementation/management. If both consultants and clients understand the fundamental needs of construction clients and if clients themselves are prepared to take an active role in the construction process, the chances of producing more successful projects will improve. © 1995 ©, MCB UP Limited. All rights reserved