We propose an exploration model of design based on the extension of the space of design behaviours using analogy. The analogy is drawn on the basis of structure similarity or structure and behaviour similarity between source and target designs. New behaviours are introduced from the source design. This paper describes such a process and discusses its significance for creative design.

This paper is an investigation of positive elements in a Banach algebra. Under the firmness of the state space of a Banach algebra, it is shown that even powers of positive Hermitian elements are in fact positive.

We introduce an alternative concept to determine the solvability of two-player games with perfect information. This concept — based on games currently solved — claims that the applicable solving procedures have a significant influence on the solvability of games. This contrasts with current views that suggest that solvability is related to state-space and game-tree complexity. Twenty articles o...

In this paper we introduce some notions of stabilizability and detectability for discrete time-varying systems. These concepts are introduced by making state-space decompositions of the system. This allows an intuitive interpretation and shows the difficulties which occur if one tries to derive general stabilizability and detectability properties. Moreover, we show by means of a counterexample ...

Discrete time control systems are widely used in time and frequency applications. Control systems can be designed to reduce phase and frequency offsets to a given reference either more or less aggressively depending on overall system needs. There are many methods available to aid in designing control systems, including techniques based on state space system models. Several state space control d...

Abstract. In this paper we explore the influence of the state-space partitioning into specific regions, when designing switched fuzzy controllers, to the stability performance of the system. For examination purposes we have designed switched fuzzy model and appropriate switched fuzzy controller for a hovercraft vehicle, as a typical nonholonomic system. The design is made for four different way...