The Inclusive City, What active ageing might mean for urban design

12 - 14 September 200

Morphology and design: reconciling intellect, intuition, and ethics in the reflective practice of architecture

This paper starts by exploring models of knowledge in order to place architectural knowledgein relation to the forms of knowledge that have been developed by other academic disciplineswithin the universities. In the light of suggestions that the low esteem in which architectureis held within the universities may be due to its basis in practice and its apparent lack of acoherent body of knowledge, the proposition is made that morphology has a special place inadvancing architectural knowledge because it is able to make the link between design and itssocial consequences. Understanding this relationship is vital if architecture is to defend itsposition as an art that is of general social relevance as opposed to being the domain of thesocially privileged. Kolb?s learning cycle is introduced as a device to track the forms of knowledgethat are essential to the reflective practice of a genuinely social architecture and to relatethese to the insights into morphology and design that have been provided by space syntaxover the past two decades. ?Sheltered? housing for older people is taken as an example of howa morphological approach can offer an enlightened critique of design guidance that articulatesthe authentic experiences of the inhabitants. The creative interplay of intellect and intuition isconsidered in relation to how morphology can help to clarify strategic design choices early onin the design process. The importance of briefing and evaluation are also stressed as essentialingredients that will enable space syntax to turn Kolb?s learning cycle into a dynamic learningprocess. The paper concludes by proposing an ethical framework for design. This paper starts by exploring models of knowledge in order to place architectural knowledgein relation to the forms of knowledge that have been developed by other academic disciplineswithin the universities. In the light of suggestions that the low esteem in which architectureis held within the universities may be due to its basis in practice and its apparent lack of acoherent body of knowledge, the proposition is made that morphology has a special place inadvancing architectural knowledge because it is able to make the link between design and itssocial consequences. Understanding this relationship is vital if architecture is to defend itsposition as an art that is of general social relevance as opposed to being the domain of thesocially privileged. Kolb?s learning cycle is introduced as a device to track the forms of knowledgethat are essential to the reflective practice of a genuinely social architecture and to relatethese to the insights into morphology and design that have been provided by space syntaxover the past two decades. ?Sheltered? housing for older people is taken as an example of howa morphological approach can offer an enlightened critique of design guidance that articulatesthe authentic experiences of the inhabitants. The creative interplay of intellect and intuition isconsidered in relation to how morphology can help to clarify strategic design choices early onin the design process. The importance of briefing and evaluation are also stressed as essentialingredients that will enable space syntax to turn Kolb?s learning cycle into a dynamic learningprocess. The paper concludes by proposing an ethical framework for design

Who Put the P in Policy? The reality of guidelines and legislation in the design of the accessible toilet.

2-4 April 200

The Quaternion-Based Spatial Coordinate and Orientation Frame Alignment Problems

We review the general problem of finding a global rotation that transforms a given set of points and/or coordinate frames (the "test" data) into the best possible alignment with a corresponding set (the "reference" data). For 3D point data, this "orthogonal Procrustes problem" is often phrased in terms of minimizing a root-mean-square deviation or RMSD corresponding to a Euclidean distance measure relating the two sets of matched coordinates. We focus on quaternion eigensystem methods that have been exploited to solve this problem for at least five decades in several different bodies of scientific literature where they were discovered independently. While numerical methods for the eigenvalue solutions dominate much of this literature, it has long been realized that the quaternion-based RMSD optimization problem can also be solved using exact algebraic expressions based on the form of the quartic equation solution published by Cardano in 1545; we focus on these exact solutions to expose the structure of the entire eigensystem for the traditional 3D spatial alignment problem. We then explore the structure of the less-studied orientation data context, investigating how quaternion methods can be extended to solve the corresponding 3D quaternion orientation frame alignment (QFA) problem, noting the interesting equivalence of this problem to the rotation-averaging problem, which also has been the subject of independent literature threads. We conclude with a brief discussion of the combined 3D translation-orientation data alignment problem. Appendices are devoted to a tutorial on quaternion frames, a related quaternion technique for extracting quaternions from rotation matrices, and a review of quaternion rotation-averaging methods relevant to the orientation-frame alignment problem. Supplementary Material covers extensions of quaternion methods to the 4D problem.Comment: This replaces an early draft that lacked a number of important references to previous work. There are also additional graphics elements. The extensions to 4D data and additional details are worked out in the Supplementary Material appended to the main tex