Rapid urbanization in the Third World is exacerbating problems of water supply, flooding, and water pollution, as well as rendering more difficult the provision of such basic services as sanitation. Although fundamental to human welfare, these water-related issues seldom play a major role in...

The paper is concerned with the effects of spatial externalities on urban development. With the Herbert-Stevens model of the housing market as the point of departure, equilibrium conditions are formulated. Similar to those of stationary points in quadratic programming, these conditions allow the...

In this paper an approach is presented to the modeling of highly structured decision processes, such as those resembling formal committee decisionmaking in which plans and designs are produced. Two such models are developed and compared here. First, the model proposed by van den Bogaard and...

In this paper the author presents a state-of-the-art review of information systems for regional development planning. Various aspects and tools of such information systems are discussed. Next, an international comparison of spatial planning-systems and spatial information-systems in six...

In this paper the author discusses the place of <I>rational method</I> as a mode of operation in the procedures and actual practices of British land-use policy in recent years. In the first part she examines <I>rational method</I> and <I>plan-based action</I> in relation to other modes of operation within the...</i></i></i>

Multifactorial data on risk originally collected by Fischoff et al and analysed using the method of factor analysis are reanalysed in this paper using Atkin's <I>Q</I>-analysis algorithm and Johnson's method of <I>Q</I>-discrimination analysis. These algorithms are presented as distinctive methods for...</i></i>

The simplicial complexes of a relation have a star structure which is richer than the usual <I>q</I>-connectivity structure of <I>Q</I>-analysis. A mathematical theory of stars is developed in which the star and hub mappings are analogous to a Galois pair. Parameters can be associated with the new structures...</i></i>

In this study the author assesses the effects of certain environmental factors on distance cognition and spatial behavior. Thirty-three university faculty members who had parked at one of two garages were asked to indicate their destination from the garage. When a destination was approximately...

An alternative representation of the binary relationship used in <I>Q</I>-analysis is presented. A unique decomposition is constructed without loss of information, and the elements of the decomposition are ordered in a Galois lattice. This lattice is an algebra identified with the intuitionistic logic...</i>

In singly-constrained entropy models, the observed response of the system represents trade-offs between macrospatial accessibility measures from zones to facilities and more microspatial and other intrinsic attributes of attractiveness within the facilities themselves. In this paper, a two-stage...