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Information and Communication technology (ICT) pervades every aspect of our daily lives to support us solving tasks and providing information. However, we are facing an increasing complexity in ICT due to interconnectedness and coupling of large-scale distributed systems. One particular challenge in this context is openness, i.e. systems and components are free to join and leave at any time, including...
Due to innovations in software, robotics and 3D printing, self-organised construction is within reach. It bears great potential for the automatic generation of a wide variety of designs, their integration into the built environment, their structural and automatised optimisation, as well as their dynamic adaptation over long periods of time. In this paper, motivated by the latest empirical findings...
Open, distributed multi-agent systems with heterogeneousagent societies face the challenge to maintain anappropriate performance level in the presence of bad-behavingagents. An approach to counter the exploiting behaviour of suchagents is the use of trust mechanisms. Yet, it is still possible foragents with a more complex behaviour to manipulate and exploitthe trust mechanism. In this paper, we show...
Human-swarm interaction is a recent research topic on how human operators can support a swarm of semiautonomous agents fulfilling certain tasks, like foraging or combat missions. In this paper, a serious game simulating a swarm of 50-250 ant-like agents is presented which have to collect resources and fight enemies. Digital pheromones (virtual chemical signals that diffuse over time) are used for...
Mosquitoes are one of the deadliest animal families in the world. They occur in a huge variety with different traits. In a lot of genera, the female mosquitoes suck blood from hosts for being able to reproduce. As a result, mosquitoes are a major vector of infectious diseases. For tracking down their prey, mosquitoes are equipped with specialised senses.We present a serious game in which the player...
We introduce SkyNetz, a playful interactive robotics simulator for computer science students. Its focus lies on the visualization of a probabilistic robot localization algorithm considering noise in the sensors and actuators of the robot on the one hand, as well as an environment filled with obstacles which damage the robot on contact on the other hand. The goal of the simulation is training students...
Desktop Computing Grids provide a framework for joining in and sharing resources with others. The result is a self-organised system that typically consists of numerous distributed autonomous entities. Openness and heterogeneity postulate severe challenges to the overall system's stability and efficiency since uncooperative and even malicious participants are free to join. In this paper, we present...
Trust is becoming an increasingly important issue in large-scale distributed systems. Especially self-managed systems from the Autonomic and Organic Computing domains consisting of several cooperating entities have to rely on an automated estimation how reliable and trustworthy potential cooperation partners are. In this paper, we introduce a novel concept to represent trust among those entities....
We experience weather every day, yet many people do not know how different weather phenomena come about. In this work, we present "Cloud Computing", an educational game that instills a meaningful subset of the according relationships and mecha- nisms. In the game, weather phenomena are animated based on environmental parameters entered by the user. The user is engaged by "weather quests",...
In this paper, we present Drink & Drive, a serious game about the effects of alcohol in individual transport. Although there were a few projects in place, we were eager to offer a more attractive gaming experience compared to the preceding projects, especially as the effects of drunk driving should be communicated to a young audience. Drink & Drive implements a competitive third-person...
Self-integration in open, distributed technical systems needs a mechanism for establishing and evaluating trust relationships to work in a stable and efficient manner. Based on a case study concerned with a Trusted Desktop Grid, this paper investigates techniques to isolate malicious agents. Therefore, we introduce a novel distributed strategy to identify and accuse nonbenevolentagents. Since intentionally...
Grid Computing Systems are examples for open systems with heterogeneous and potentially malicious entities. Such systems can be controlled by system-wide intelligent control mechanisms working on trust relationships between these entities. Trust relationships are based on ratings among individual entities and represent system-wide information. In this paper, we propose to utilise a normative approach...
In an open Trusted Desktop Grid system, users can voluntarily participate in order to share resources. Thereby, computational trust is used to isolate malicious agents. Since a fully self-organised solution can suffer in emergent situations like the trust-breakdown scenario, we investigate an additional normative entity to guide the overall system behaviour by still keeping the autonomy of all agents...
Fully self-organised and open systems consisting of a variety of heterogeneous and autonomous entities can suffer due to malicious elements or attacks. One approach to cope with this challenge is to introduce trust. Thereby, trust relationships are based on ratings among individual entities and represent system-wide information. A Trusted Desktop Computing Grid is one example, where such a trust mechanism...
A Trusted Desktop Grid System (TDG) is a platform for autonomous agents to share their computing resources based on trust relationships. Thereby, agents that only use the system without a fair participation are considered as malicious. Typically, the effects of active malicious agents and high-load situations of the TDG are similar -- calling for appropriate approaches to distinguish them and, thus,...
Dynamic MANET On-demand (AODVv2) routing, formerly known as DYMO, is a routing protocol especially designed for wireless, multi hop networks. AODVv2 determines routes in a network in an on-demand fashion. In this paper we present a formal model of AODVv2, using the process algebra AWN. The benefit of this is two-fold: (a) the given specification is definitely free of ambiguities; (b) a formal and...
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