Bücher der Reihe Nato Science Series E:

Concurrent design, or co-design of hardware and software is extremely important for meeting design goals, such as high performance, that are the key to commercial competitiveness. Hardware/Software Co-Design covers many aspects of the subject, including methods and examples for designing: (1) general purpose and embedded computing systems based on instruction set processors; (2) telecommunication systems using general purpose digital signal processors as well as application specific instruction set processors; (3) embedded control systems and applications to automotive electronics. The book also surveys the areas of emulation and prototyping systems with field programmable gate array technologies, hardware/software synthesis and verification, and industrial design trends. Most contributions emphasize the design methodology, the requirements and state of the art of computer aided co-design tools, together with current design examples.

PHEMT devices and their incorporation into advanced monolithic integrated circuits is the enabling technology for modern microwave/millimeter wave system applications. Although still in its infancy, PHEMT MIMIC technology is already finding applications in both military and commercial systems, including radar, communication and automotive technologies. The successful team in a globally competitive market is one in which the solid-state scientist, circuit designer, system engineer and technical manager are cognizant of those considerations and requirements that influence each other's function. This book provides the reader with a comprehensive review of PHEMT technology, including materials, fabrication and processing, device physics, CAD tools and modelling, monolithic integrated circuit technology and applications. Readers with a broad range of specialities in one or more of the areas of materials, processing, device physics, circuit design, system design and marketing will be introduced quickly to important basic concepts and techniques. The specialist who has specific PHEMT experience will benefit from the broad range of topics covered and the open discussion of practical issues. Finally, the publication offers an additional benefit, in that it presents a broad scope to both the researcher and manager, both of whom must be aware and educated to remain relevant in an ever-expanding technology base.

vii Part 1. ULTIMATE PHYSICAL LIMITS IN ELEcrRONIC CCM1UNICATION Breaking the Recursive Bottleneck Professor David G. Messerschmitt 3 Optimum Scales and Limits of Integration Professor Daniel V. McCaughan . . ¿ . 21 On Ultimate Thermodynamic Limitations in Communication and canputation Professor Jerome Rothstein 43 Part 2. STATISTICAL, INFORMATIONAL, COMPUTATIONAL AND CRYPI'OGRAPHIC LIMITS On the Capacity of Peak Power Constrained Gaussian Channels Professor I. Bar-David ¿. . . . . . . . . . ¿¿¿. 61 Complexity Issues for Public Key Cryptography Professor Ian F. Blake, Dr. Paul C. van Oorschot and Dr. Scott A. Vanstone . . ¿. . . ¿. ¿. . . 75 Collaborative Coding for Optical Fibre Multi-User Channels Dr. P. Bridge . ¿¿. . ¿¿¿. . . . ¿. 99 What Happened with Knapsack Cryptographic Schemes? Professor Y. G. Desmedt . ¿¿. . . . ¿¿¿¿. 113 Optical Logic for Computers Dr. Robert W. Keyes . . . ¿ 135 Limitations of Queueing Models in Communication Networks 143 Professor Anthony Ephremides . ¿ ¿ . . ¿ ¿ ¿ ¿ ¿ . ¿ Limits to Network Reliability Dr. GUnter G. Weber . ¿. . . 155 Two Non-Standard Paradigms for Computation: Analog Machines and Cellular Automata Professor Kenneth Steiglitz ¿¿¿¿¿¿¿¿ 173 The Capacity Region of the Binary Multiplying Channel - A Converse Professor J. Pieter M. Schalkwijk . . . . . . . ¿. ¿ 193 Recent Developments in Cryptography Dr. Fred Piper . ¿ ¿ ¿ . ¿ ¿ ¿ 207 vi The Role of Feedback in Communication Professor Thomas M. Cover ¿ . ¿ . . ¿ 225 The Complexities of Information Transfer with Reference to a Genetic Code Model Mr. G. A. Karpel . . ¿. . . . . . . . .

Corrosion behaviour is one of the most poorly understood characteristics of ceramics. A balanced mixture of scientists from material science, metallurgy, physics, chemistry and mineralogy sum up the state of the art of measurement and modelling and reveal future research directions. The book reviews the theory of corrosion of ceramics, including the diffusion of gases and the predictions of thermodynamics; it discusses critically the kinetic models and representation tools for layer growths and material destruction. Corrosion of nitrides, carbides and oxides by simple and complex gases (O2, H2O, SO2, halides) and melts (ionic and metallic) reveal current measurement and modelling methods, advanced experimental techniques, such as laser diagnostics, TV holography, Raman spectroscopy and NDE surface methods. Frontier areas (e.g. the modelling of porous materials corrosion and protection) are revealed. For scientists and engineers in materials science, dealing with ceramics and their application. A valuable source for research students, solid state physicists and physical chemists.

In the ten years since the scientific rationale for the design, synthesis and application of inorganic and organometallic polymers (IOPs) was first conceptualised, we have witnessed the first tentative exploration of IOPs as precursors to new materials, with efforts focusing on the design and synthesis of novel ceramic precursors. Developing expertise led to precursor studies combined with the characterisation of the transformation processes that occur when IOPs are converted to ceramic materials. Now at maturity, the science presented in this volume reveals the polymer precursor approach to materials synthesis together with examples of processing ceramic shapes for a range of mechanical properties, the development of sophisticated, noninvasive analytical techniques, and IOP design rationales relying on well-defined processing-property relationships. The production of multifunctional IOPs is described, providing ion conductivity, gas sensing, bioactivity, magnetic properties, etc., combined with processability. The existence of well-defined IOPs and the exquisite control that can be exerted on sol-gel systems now provide access to such a variety of mixed organic-organometallic and/or inorganic hybrid systems that their exploitation is likely to develop into an entirely new field of materials chemistry. Future exciting avenues of research are also being opened up with the advent of buckyballs, Met-Cars, dopable preceramics, rigid-rod organometallics, and molecular tinkertoys.

Plasma Processing of Semiconductors contains 28 contributions from 18 experts and covers plasma etching, plasma deposition, plasma-surface interactions, numerical modelling, plasma diagnostics, less conventional processing applications of plasmas, and industrial applications. Audience: Coverage ranges from introductory to state of the art, thus the book is suitable for graduate-level students seeking an introduction to the field as well as established workers wishing to broaden or update their knowledge.