Because of theinfluence of wind in creating current, there is a relationshipbetween this oceanic circulation and the general circulationof the atmosphere. The oceanic circulation is shown on thechart following this page (winter N. hemisphere), with thenames of the major ocean currents.
Radiological Dispersion Device. Terrorist use of a Radiological Dispersion Device (RDD) â often called âdirty nukeâ or âdirty bombâ â is considered far more likely than use of a nuclear explosive device. An RDD combines a conventional explosive device â such as a bomb â with radioactive material.
A data flow diagram (DFD) is a graphical representation of the flow of data through an information system, modelling its process aspects.A DFD is often used as a preliminary step to create an overview of the system, which can later be elaborated. data flow diagram (DFD) is a graphical representation of the flow of data through an information system, modelling its process aspects.