The application framework of the presented research work is stablished in the area of the low-power portable stand-alone devices. Considering as a paradigm application the implementation of future portable terminals for telecommunications, two opposed trends coexist that determine the need for an optimized energy management. An...

The constant and speedy progress made by humankind in the industrial revolution, and more recently in the information technology era can be directly attributed to sharing of knowledge between various disciplines, reuse of the knowledge as science and technology advanced, and inclusion of this knowledge in the curriculum. The phrases...

Natural language processing is often called an "Al-complete" task, in the sense that in order to truly process language (i.e. to comprehend, to translate, to generate) full understanding is required, which is itself the ultimate goal of Artificial Intelligence. For those who seek solutions to practical problems, this is not a...

The second, revised edition of this book covers all aspects of non-uniform rational B-splines necessary to design geometry in a computer-aided environment. Basic B-spline features, curve and surface algorithms, and state-of-the-art geometry tools are all discussed. Detailed code for design algorithms and computational tricks are covered, too,...

With the advent of LSI and subsequently VLSI, technology has never witnessed such an unprecedented growth in the use of electronic systems in a wide range of applications. Although the ability to integrate several hundreds of thousands of transistors into a monolithic integrated circuit offers many advantages, a major concern in the...

Computer vision seeks a process that starts with a noisy, ambiguous signal from a TV camera and ends with a high-level description of discrete objects located in 3-dimensional space and identified in a human classification. In this book we address this process at several levels. We first treat the low-level image-processing issues of...

Graph rewriting systems have come of age. In autumn 1994, the 25th anniversary of the first publication in this area was celebrated at the 5th Workshop on Graph Grammars and their Applications to Computer Science. In the interim, the subject has evolved. The current situation can be described by a three-stage model. At the very low...

Cognitive spatial concepts are qualitative in nature, i.e., they are based not so much on exact quantities but on comparisons between perceived magnitudes. We develop a qualitative model for the representation of spatial knowledge (in particular, of positional information about 2-dimensional projections) that is based only on locative...

The REX School/Symposium *A Decade of Concurrency - Reflections and Perspectives' was the final event of a ten year period of cooperation between three Dutch research groups working on the foundations of concurrency. Ever since its inception in 1983. the goal of the project has been'to contribute to the crossfertilization...

This Ph.D. dissertation presents the result of research carried out between 1985 and 1992, first at Leiden University as a scientific assistant researcher, and later at CWI (Centre for Mathematics and Computer Science), Amsterdam, as a researcher on the NFI IIICAD project, funded by NWO (Dutch Organization for Scientific Research)...

Polymericmaterials, both “inert” and degradable, constantly interact with the surroundings. Because of this interaction changes take place in the polymer matrix and small molecules are released to the environment. Reliable methods for testing biodegradability and environmental interaction of renewable resources and...

The substantial effort of parallel programming is only justified if the resulting codes are adequately efficient. In this sense, all types of performance tuning are extremely important to parallel software development. With parallel programs, performance improvements are much more difficult to achieve than with con ventional...