This thesis consists of studies of modelling and implementation issues for planning tool development. In particularly it emphasizes issues that are relevant for practical, industrial use of mathematical models and algorithms. Using a circuit design and a network planning tool as concrete examples the thesis analyses the practical issues of the development and maintenance of such systems and, es...

This work is about the implementation of a MPEG-4 decoder for subdivision surfaces, which are powerful 3D paradigms allowing to compactly represent piecewise smooth surfaces. This ‘study’ will take place in the framework of MPEG-4 AFX, the extension of the MPEG-4 standard including the subdivision surfaces. This document will introduce, with some details, the ‘theory’ of subdivision surfaces in...

Many international and national asthma guidelines are now available in large parts of the world, but they are not yet implemented appropriately. There is a gap between scientific evidence-based medicine and real clinical practice. Implementation of guidelines is highly complex. Special strategies are needed to encourage guideline-based, high-quality care. It is important to understand the conte...

The design community has to switch over from Register Transfer Level (RTL) to higher abstraction level to design a digital circuit since the design complexity of digital circuits and System on Chip (SoC) are swelling. This increasing complexity and recent advancement in on-chip circuit has paved the way for High Level Synthesis (HLS) improvement (precisely for FPGA). The commercial HLS in earli...

The aim of the research discussed here was to understand computer-aided software engineering (CASE) tool usage in Taiwan. Through a literature review, we developed two questionnaires ± one for general respondents, the other for teachers and CASE agents. After pre-testing, 786 questionnaires were mailed out and 226 effective responses were obtained after two follow-up letters. Factor analyses we...

In this Diabetes Information Technology & WebWatch column hurdles to the use of computerised decision-support tools in clinical diabetes care will be considered. The clinical background with respect to insulin-dependent (type 1) diabetes mellitus and the Diabetes Control and Complications Trial is reviewed, and an overview is given of various computer applications. The use of decision-support t...

The Post Implementation Review (PIR) is arguably the single most cost effective tool available for software process improvement. However to maximise the benefits, a methodology and supporting tools for the PIR are required. This paper examines the prerequisites for successful reviews and the key elements of the method. It then describes eight practical techniques (both qualitative and quantitat...

Although a number of tool boxes for compiler construction exist, the language implementation task can often be made easier by building specialised tools. A prototype Haskell system was implemented within a four month period using such an approach. The system is currently used as a front end for a transputer array, Haskell implementation. In this article we describe the tool building aspect of t...