We present a cognitive model of opinion dynamics which studies the behavior of a population of interacting individuals in the context of risk of natural disaster. In particular, we investigate the response of the individuals to the information received by institutional sources about the correct behaviors for prevention and harm reduction. The results of our study show that alarmist opinions are...

The global land system is under intense pressure from human demands for a range of different services. Economic theory suggests that globalised free trade is the most efficient way of handling these demands, allowing maximum productivity and specialisation of supply. However, political responses are often protectionist in nature, designed to ensure continuity of land uses and the regional produ...

This paper presents a component-based product line for workflow management systems. The process followed to design the product line was based on the Catalysis method. Extensions were made to represent variability across the process. The domain of workflow management systems has been shown to be appropriate to the application of the product line approach as there are a standard architecture and ...

This paper compares population-based and agent-based modelling approaches for the dynamics of group Situation Awareness. These two models were applied to a case study in aviation. Numerous relevant simulations of the models were performed in order to investigate whether the behaviour of the population-based model can approximate the pattern produced by the agent-based model. It was demonstrated...

This paper presents a component-based product line for workflow management systems. The process followed to design the product line was based on the Catalysis method. Extensions were made to represent variability across the process. The domain of workflow management systems has been shown to be appropriate to the application of the product line approach as there are a standard architecture and ...

Electronic institutions (EIs) define the rules of the game in agent societies by fixing what agents are permitted and forbidden to do and under what circumstances. Autonomic Electronic Institutions (AEIs) adapt their regulations to comply with their goals despite coping with varying populations of self-interested external agents. This paper presents a self-adaptation model based on Case-Based R...

This article investigates the cyclical properties of an endogenous growth model. An explicit solution is derived which permits the full characterization of the cyclical as well as the long{run properties of the model. Using spectral, autocorrelation and impulse response functions, we show that introducing endogenous growth overcomes some of the main shortcomings of RBC models. In particular, th...

Hepatitis C virus (HCV) infection is endemic in people who inject drugs (PWID), with prevalence estimates above 60% for PWID in the United States. Previous modeling studies suggest that direct acting antiviral (DAA) treatment can lower overall prevalence in this population, but treatment is often delayed until the onset of advanced liver disease (fibrosis stage 3 or later) due to cost. Lower co...

x ∈ Σ∗ is a sequence from the alphabet Σ, xi is the ith symbol, where p(xi) is a distribution over Σ independent of i. (Actually, a full model of the empirical distribution would also have to include a model of the length distribution P (n). But let’s neglect that.) On his third level, he distinguished different p(xi) for different parts of the sequence. Distinguishing different p(xi) for every...

Many proven clinical interventions that have been tested in carefully controlled field settings have not been widely adopted. We study an agentbased model of innovation adoption. Traditional statistical models average out individual variation in a population. In contrast, agent-based models focus on individual behavior. Because of this difference in perspective, an agent based model can yield i...