A5019660321- Energy Efficient Wireless Sensor Networks
- Computational Geometry and Mesh Generation
- Modular Robots and Swarm Intelligence
- IoT and Edge/Fog Computing
- Robotic Path Planning Algorithms
- Indoor and Outdoor Localization Technologies
- Robotics and Sensor-Based Localization
- Data Management and Algorithms
- Optimization and Search Problems
- Energy Harvesting in Wireless Networks
- Context-Aware Activity Recognition Systems
- Semantic Web and Ontologies
- Opportunistic and Delay-Tolerant Networks
- Mobile Ad Hoc Networks
- Advanced Graph Theory Research
- Molecular Communication and Nanonetworks
- Distributed Control Multi-Agent Systems
- Scientific Computing and Data Management
- Complexity and Algorithms in Graphs
- Optimization and Packing Problems
- Network Time Synchronization Technologies
- Service-Oriented Architecture and Web Services
- Advanced Numerical Analysis Techniques
- Transportation and Mobility Innovations
- Petri Nets in System Modeling
TomTom (Germany)
2021-2022
Technische Universität Braunschweig
2007-2016
The University of Texas at Dallas
2015
Zhejiang University
2015
University of Lübeck
2011
Penn Center for AIDS Research
2011
National Science Teachers Association
2011
Microsoft Research (United Kingdom)
2011
Ahlia University
2011
Association for Computing Machinery
2011
The developed world is awash with sensors. However, they are typically locked into unimodal closed systems. To unleash their full potential, access to sensors should be opened such that data and services can integrated available in other information systems, facilitating novel applications based on the state of real world. We describe our vision architecture a Semantic Web Things: service infrastructure makes deployment use semantic involving Internet-connected almost as easy building,...
We present a new framework for the crucial challenge of self-organization large sensor network. The basic scenario can be described as follows: Given swarm immobile nodes that have been scattered in polygonal region, such street Nodes no knowledge size or shape environment position other nodes. Moreover, they way measuring coordinates, geometric distances to nodes, their direction. Their only interacting with is send receive messages from any node within communication range. objective...
Virtual testbeds model them by seamlessly integrating physical, simulated, and emulated sensor nodes radios in real time.
We present a new framework for the crucial challenge of self-organization large sensor network. The basic scenario can be described as follows: Given swarm immobile nodes that have been scattered in polygonal region, such street Nodes no knowledge size or shape environment position other nodes. Moreover, they way measuring coordinates, geometric distances to nodes, their direction. Their only interacting with is send receive messages from any node within communication range. objective...
In this paper we present a modular and extensible visualization framework for wireless sensor networks. These networks have typically no means of visualizing their internal state, readings or computational results. Visualization is therefore key issue to develop operate these Data emitted by individual nodes collected gateway software running on machine in the network. It then passed via TCP/IP potentially remote machine. plug-ins can register different data types, visualize information...
We consider the simulation of wireless sensor networks (WSN) using a new approach. present Shawn, an open-source discrete-event simulator that has considerable differences to all other existing simulators. Shawn is very powerful in simulating large scale with abstract point view. It is, best our knowledge, first support generic high-level algorithms as well distributed protocols on exactly same underlying networks.
Shawn is a discrete event simulator for sensor networks. Due to its high customizability, it extremely fast but can be tuned any accuracy that required by the simulation or application.
Current surveys and forecast predict that the number of wireless devices is going to increase tremendously. These can be computers all kinds, notebooks, netbooks, Smartphones sensor nodes evolve into real-world scenarios forming a "Real-World-Internet" in future. In our work we focus on Future Internet with small battery driven "Internet Things". recent networking research, testbeds gain more attention, especially context networks (WSNs). This development stems from fact simulations even...
For the Internet of Things to finally become a reality, obstacles on different levels need be overcome. This is especially true for upcoming challenge leaving domain technical experts and scientists. Devices connect able offer services. They have announce describe these services in machine-understandable ways so that user-facing systems are find utilize them. learn about their physical surroundings, they can serve sensing or acting purposes without explicit configuration programming....
We present the platform-independent Wiselib RDF Provider for embedded IoT devices such as sensor nodes. It enables to act semantic data providers. They can describe themselves, including their services, sensors, and capabilities, by means of documents. Used in a protocol stack that provides Internet connectivity (6LowPAN) service layer (CoAP), autoconfigure itself, connect Internet, provide Linked Data without manual intervention. introduce Streaming HDT, lightweight serialization format...
The classical Art Gallery Problem asks for the minimum number of guards that achieve visibility coverage a given polygon. This problem is known to be NP-hard, even very restricted and discrete special cases. For case vertex simple orthogonal polygons, Cuoto et al. have recently developed an exact method based on set-cover approach. general (in which both set possible guard positions point guarded are uncountable), neither constant-factor approximation algorithms nor solution methods known....
We focus on the problem of computing tight deadline miss models for real-time systems, which bound number potential misses in a given sequence activations task. In practical applications, such guarantees are often sufficient because many systems fact not hard real-time. Our major contribution is general formulation that context where some tasks occasionally experience sporadic overload. Based this new formulation, we present an algorithm can take into account fine-grained effects overload at...
Electric vehicles are a central component of future mobility systems as they promise to reduce local noxious and fine dust emissions, well CO 2 if fed by clean energy sources. However, the adoption electric so far fell short expectations despite significant governmental incentives. One reason for this slow is drivers’ perceived range anxiety, especially individually owned vehicles. Here, bad user experiences (e.g., conventional cars blocking charging stations or inconsistent real-time...
In this video, we illustrate how one of the classical areas computational geometry has gained in practical relevance, which turn gives rise to new, fascinating geometric problems. particular, demonstrate robot platform IRMA3D can produce high-resolution, virtual 3D environments, based on a limited number laser scans. Computing an optimal set scans amounts solving instance Art Gallery Problem (AGP): Place minimum stationary guards polygonal region P, such that all points P are guarded.