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  • CoSMoS
    test our ideas about how sinusoidal networks could be modelled The blood vessels are coloured according to their chemokine levels with chemokines diffusing away from infected sections of vessel wall blue blobs are Kupffer cells that follow the chemokine gradient

    Original URL path: http://www.cosmos-research.org/case-granuloma.html (2016-02-16)
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  • CoSMoS
    that agents do not communicate directly with each other For example if we imagine that we are simulating agents communicating by sound in the real world then instead of saying that one agent communicates with another we observe that in reality one agent merely impresses its communication upon the environment and other agents take notice of that notion in the environment or not as they will In this way we decouple the notions of agent to agent communication to one of interaction between an agent and its environment agents place things in the environment and observe the consequences in the environment of other agents activities In this area of research we are investigating this notion as a way of structuring the interaction of agents in an agent based simulation of some complex system We are investigating the consequences of agents getting partial information from their environment and how they combine and fuse information from multiple environments whose characteristics vary For example visual and olfactory environments have wildly different characteristics but an agent might well use both to determine its future behaviour Environment Orientation An Architecture for Simulating Complex Systems PDF Tim Hoverd and Susan Stepney In Susan Stepney Peter H

    Original URL path: http://www.cosmos-research.org/case-environment.html (2016-02-16)
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  • CoSMoS
    meaning that evolutionary algorithm s search space is smaller Secondly there is theory 1 to suggest that doing so would make the swarm more stable Essentially if the robots know how and what information is being communicated between each other then they can rely on other robots to provide the information they need and expect Without pre determining the robot to robot communication they would not have this ability a detrimental change to the communication of one robot would cause faults in other robots that rely on the data it provides For our experiments we will be using sound as our communication medium and the robots will communicate by playing a series of tones each tone could consist of several different frequencies The simulation for this behaviour is being developed in parallel with the implementation on real robots Currently we have a simulation of phonotaxis movement towards a sound source being performed we are now developing a microphone array beamforming extension to the e puck so that they can detect what audio in their environment and discern its frequency and the direction the sound is coming from Our simulation is written using Player Stage and will eventually be implemented on

    Original URL path: http://www.cosmos-research.org/case-robotics.html (2016-02-16)
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  • CoSMoS
    run simulations and compare results with those from the original IBM Some emergent behaviours regarding phenotypic growth forms are observed in the devised ABM Success of the re conceptualisation in the sense of model equivalence can only be claimed if both the ABM is considered â equivalentâ to the IBM and the implementation accurately reflects the ABM As the occam p language is currently under development this project also evaluates

    Original URL path: http://www.cosmos-research.org/case-fungal.html (2016-02-16)
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  • CoSMoS
    ecology If the foundations are laid on computer science SCS is seen as a source of insight into the use of effective argumentation techniques CoSMoS has already criticised the often naive modelling efforts that fail to provide an adequate measure of their validity SCS provides a wide curriculum of techniques for constructing large scale tractable arguments and we believe simulation based research needs such capabilities As such we have been probing SCS for philosophical and pragmatic contributions We will also be evaluating the use of the HAZOP deviational analysis in better understanding research assumptions modelling and simulation assumptions Ecology is a domain that has not only employed computer models and simulations in its research but that has actively contributed to simulation science by proposing new modelling validation and documentation techniques For our purposes ecology is both a source of inspiration and a domain of applicability this work is grounded on a plant ecology case study For experimentation we are using four simulators implementing the plant ecology model the original one developed in C cplants an occam pi simulation occplants a NetLogo version nplants and finally a distributed version of the occam pi simulation occplants2 currently under development Scientific literature is prolific in terms of uncertainty robustness and sensitivity analysis techniques more recent efforts being directed towards analysing complex systems simulations Our work on using structured argumentation and analysing research assumptions is intended to complement and use such techniques 0 Beginnings Literature Review and Qualifying Dissertation Literature review slides Complexity Modelling and Plants Modelling Complexity in Plant Ecology Qualifying dissertation Towards Valid Models and Simulations of Complex Systems A Plant Ecology Case Study 1 A first use of structured argumentation in a scientific context arguing the equivalence of complex systems simulations Equivalence Arguments for Complex Systems Simulations A Case Study 2

    Original URL path: http://www.cosmos-research.org/case-validation.html (2016-02-16)
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  • CoSMoS
    flocks and navigate around obstacles as an emergent behaviour Occoids with food We extended the model to include food green squares which the birds are strongly attracted to and hawks red squares which frighten the birds and cause them to temporarily change their flocking behaviour Occoids with restricted view If the field of view of the birds is severely restricted they form long thin flocks that eventually settle down into

    Original URL path: http://www.cosmos-research.org/case-occoids.html (2016-02-16)
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  • CoSMoS
    algorithm The population consists of moving ants the red and green dots and various sizes of static eggs the white circles Ants can make aesthetic judgements about the placement of eggs When an ant encounters an egg that it feels to be poorly placed it picks it up and carries it until it finds a better location for it Using a simple aesthetic rule the ants can eventually sort the

    Original URL path: http://www.cosmos-research.org/case-annular.html (2016-02-16)
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  • CoSMoS
    Chemical diffusion Many simulations require a model of chemical diffusion Diffusion demonstrates diffusion of three differently coloured chemicals red green and blue across a grid of cells The user can place chemicals using the mouse In this simulation the chemicals

    Original URL path: http://www.cosmos-research.org/case-diffusion.html (2016-02-16)
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