Read e-book online Commutative ring theory and applications : proceedings of PDF

By Sylvia Wiegand

ISBN-10: 0824708555

ISBN-13: 9780824708559

That includes displays from the Fourth foreign convention held in Fez, Morocco. Emphasizes cutting edge purposes and connections to algebraic quantity idea and geometry, and homological and computational algebra.

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Extra resources for Commutative ring theory and applications : proceedings of the fourth international conference

Example text

We used a traditional classical feedback control model above to demonstrate the principles of goal seeking and it seems possible to use this same type of popular model to explain Vickers' notion of regulation through relationshipmaintenance but with some important differences. In Figure 4 we use the components of Checkland and Casar's representation of an appreciative system and superimpose them onto a classical feedback control model. We can see how the self-regulative action of appreciation means that we need to re-think the boundaries of the 'system'.

The basic idea underpinning this approach is that any complex situation can be described in terms of elements and flows; flows being the relationships between the elements. The main focus of the methodology is the structure (elements) and processes (flows) between the elements. This description constitutes the dynamic behaviour of the system. Essentially, SO aims to predict the behaviour of a Mapping the Development of Management Sciences Methodologies in the UK 23 system, it relies heavily on the use of a model which aims to contain the intricacies of the complex structure and the multiple feedback loops that link each element of the structure.

For example, in the goal-seeking model, the 'reference level', or standards, are considered as being set from outside the system: even if they are altered as a result of the system's controller being unable to correct any deviant action, the 'goal' needs to be reset. By comparison, with relationship-maintenance the standards are within the system and are continually being reformed and adjusted in reaction to the past history, current experience and future expectations of the system itself. The controller, or regulator is clearly within the system boundary at all times (he/she does not stand outside the system to consider the systems performance objectively and reset the system's performance criteria), watching and judging its action.

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Commutative ring theory and applications : proceedings of the fourth international conference by Sylvia Wiegand

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