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Adaptive predictive control for software systems

Self-adaptive software systems are designed to support a number of alternative solutions for fulfilling their requirements. These define an adaptation space. During operation, a self-adaptive system monitors its performance and when it finds that its requirements are not fulfilled, searches its adaptation space to select a best adaptation. Two major problems need to be addressed during the selecti

A paradigmatic discourse in the logistics discipline

Today one could argue that most of the logistics research available has a strong connection to the positivistic paradigm where there is a great emphasis on simplicity in both the research conducted and in the solutions produced. The overall ability to design, plan and control is promoted by the researchers to a great extent. Consequently, firms invest money, time and resources in solutions, based

Development of adaptive kinetics for application in combustion systems

In this paper, an automatic method for reducing chemical mechanisms during run time based on the quasi-steady-state assumption (ASSA) is presented. The method uses a lifetime analysis of the chemical species which can be set to steady state according to a ranking procedure. Steady-state species concentrations are computed by algebraic rather than differential equations, thus yielding a significant

The Total Picture - A framework for control of IT investments

Evaluation of IT investments is a difficult and complicated issue. This chapter presents a framework for control of IT investments with the aim of providing decision-makers with a clear picture of individual IT investments as well as an aggregated level where all IT investments are combined into a total picture. The framework has been developed using an action–research approach.In a number of work

Social laws should be conceived as a special case of mechanisms : A reply to Daniel Little

I am grateful to Daniel Little for his insightful reply to my recent article in Social Epistemology (2012, 105-114) about what appears to be a flaw in Jon Elster’s conception of mechanisms. I agree with much of what Little says, but want to amplify a different underlying problem with Elster’s conception (fourth point below) than Little suggests in his reply (third point below). This underlying pro

Practical advantages of inverted decoupling

This paper presents a study of the main advantages of inverted decoupling in 2×2 processes. Two simulation examples and an experimental process are used to show these advantages in comparison with simplified decoupling. The study focuses on the following practical advantages: the apparent process is the same as that obtained if one loop changes to manual; bumpless transfer and anti-windup are achi