Abstract— A Sybil attacker is a malicious node which creates several false identities to itself. This attack is extremely harmfull to any voting or cooperation-based system, like a MANET. MANETs (Mobile Ad hoc Networks) are dynamically establiched, cooperation-based wireless networks, deployed without any infrastructure or centralized administration. Due to their dynamic environment, MANETs are...

Communication and collaboration in Online-Cooperation Virtual Environments (OCVE) are characterized by technical and organizational constraints. Based on well-established theory and research, necessary adjustments of pedagogical concepts for this scenario are presented here. Oriented towards practical use, considered topics include: (1) general features of communication, verbal and nonverbal be...

In this paper, we will present a method for generating conversations between human-like agents and this will be done by proposing specific parameters for inter-agents messages with an approximation of virtual sound propagation. We will then be able to simulate appropriate human-like behaviours automatically. For instance, we will demonstrate how to create proper reactions for agents that are no...

This paper presents a framework for GSI to integrate security components from the viewpoint of connection. To enhance security and security of virtual organization, A multi-homed architecture model is given, which employs a mechanism based on modified SOCKSv5 to support the resource utilization for GSI itself. The framework and the modified mechanism is independently. With the mechanism, the GS...

In this paper, we propose a novel telepresence technique that has the advantage of both model-based and imagebased approaches. In this technique, a virtual environment representing a remote place is presented by using projection texture mapping of live video images captured by a wearable camera onto the 3D geometry of the remote place. The 3D geometry is acquired in advance. The virtual environ...

The nodes of a wireless sensor network (WSN) collect the data of interest from the deployment area and cooperatively send it to sink in multiple hops. Recently, virtual multiple input multiple output (V-MIMO) technique has been introduced in which the node cooperation is extended to form a virtual antenna array and communication is accomplished using space time block coding. The present work ex...

This paper studies virtual organization (VO) creation through an application of mathematical programming. We present a mixed integer linear programming (MILP) model to support VO configuration in a virtual organization breeding environment (VBE). The model allows for multiple criteria, of which we give several examples: One objective is to minimize total fixed and variable costs. Another object...

In this paper, we present a new trajectory planning algorithm for virtual humans. Our approach focuses on implicit cooperation between multiple virtual agents in order to share the work of avoiding collisions with each other. Specifically, we extend recent work on multi-robot planning to better model how humans avoid collisions by introducing new parameters that model human traits, such as reac...

police registries were extremely rare. Fragmentation of this kind has seriously hindered cooperation in the recent past. The solution to regional fragmentation the Dutch police has been looking for can be considered as “virtual integration”. For more than a decade now, Dutch police management has tried to establish a joint communications system, and national criminal investigation registries. L...

This research focuses on the synergistic approach in coupling symbolic and behavioural AI in cooperative design agent development in an adaptive virtual world for design collaboration, based on the connotation of AIengined design agents as design collaborators. Recent agent development, such as adaptive hypermedia and adaptive web, cooperation algorithm, Python scripting and SQL database techno...