Prolog to planetary influences on electrical engineering (tutorial introduction to paper by Ronald N. Bracewell)

Article Abstract:

The history of electrical engineering is closely connected to the study of the Moon, Mars, Jupiter and Saturn, as well as other astronomical subjects. Nineteenth-century radio science was a significant forum for the development of electrical engineering concepts. The study of Jupiter's satellites led to Maxwell's theories of electromagnetic waves. In the 18th century, Laplace's work on the orbital motion of Jupiter was central to later analysis of transients in electric circuits. The Fourier transform methods for antenna patterns are the result of Huygens' discovery and study of the rings of Saturn. While these astronomical developments are not often studied by electrical engineering students, their knowledge would enhance the educational process.

Astronomy, History, Electrical engineering, Engineering Education

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Prolog to modular design principles for protocols with an application to the transport layer; a tutorial introduction to the paper by Shankar

Article Abstract:

A. Udaya Shankar proposes a network protocol theory that formalizes the ideas of service and protocol to provide a stepwise method of deriving a protocol from a service. Shankar's theory involves mathematical principles relating to state-transition systems that relate directly to distributed computing networks. The ideas proposed by Shankar include a new way of specifying what a service is. Shankar defines a service as a fundamental unit of interaction between the protocol above the service and the protocol below the service. Shankar also specifies a service as a state-transition system and by invariant and progress requirements.

Computer science, Communications protocols, Network architectures, Protocol, Analysis, Network Models, Network Architecture, Transport Layer Control

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Prolog to: Sensors and Systems to Enhance Aviation Safety Against Weather Hazards: a tutorial introduction to the paper by Mahapatra and Zrnic

Article Abstract:

An introduction to Pravas R. Mahapatra's and Dusan S. Zrnic's paper, 'Sensors and Systems to Enhance Aviation Safety Against Weather Hazards,' is presented. The paper describes three Doppler weather system currently under development that are designed chiefly to monitor and evaluate the motion of air masses. The systems include the Terminal Doppler Weather Radar (TDWR), the Airport surveillance Weather Radar and the next Generation Weather Radar System. Mahapatra's and Zrnic's paper describes the physics of adverse weather, Doppler engineering basics and a variety of advanced systems.

Aerodynamics, Radar, Information systems, Meteorology, Sensor, Scientific Research, Radar Systems

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