Scientific Results

This catalogue is obtained by conducting a systematic literature review of scientific studies and reviews related to monitoring, forecasting, and simulating the inland water cycle. The analysis maps scientific expertise across research groups and classifies findings by the type of inland water studied, application focus, and geographical scope. A gap analysis will identify missing research areas and assess their relevance to policymaking.

ID â–² Type Year Authors Title Venue/Journal DOI Research type Water System Technical Focus Abstract Link with Projects Link with Tools Related policies ID
publications-841 CONFERENCE PROCEEDING 2012 Fragkiadakis A., Nikitaki S., Tsakalides P. Physical-layer intrusion detection for wireless networks using compressed sensing 10.1109/wimob.2012.6379174 Hydrological modeling Precipitation & Ecological Systems No abstract available 287613
publications-842 CONFERENCE PROCEEDING 2012 Nikitaki S., Tsakalides P. Decentralized indoor wireless localization using compressed sensing of signal-strength fingerprints 10.1145/2387191.2387198 Data Management & Analytics Precipitation & Ecological Systems No abstract available 287613
publications-843 ARTICLE 2013 Park P., Fischione C., Johansson K.H. Modeling and stability analysis of hybrid multiple access in the IEEE 802.15.4 protocol 10.1145/2422966.2422970 Predictive Analytics Precipitation & Ecological Systems To offer flexible quality of service to several classes of applications, the medium access control (MAC) protocol of IEEE 802.15.4 wireless sensor networks (WSNs) combines the advantages of a random access with contention with a time division multiple access (TDMA) without contention. Understanding reliability, delay, and throughput is essential to characterizing the fundamental limitations of the MAC and optimizing its parameters. Nevertheless, there is not yet a clear investigation of the achievable performance of hybrid MAC. In this article, an analytical framework for modeling the behavior of the hybrid MAC protocol of the IEEE 802.15.4 standard is proposed. The main challenge for an accurate analysis is the coexistence of the stochastic behavior of the random access and the deterministic behavior of the TDMA scheme. The analysis is done in three steps. First, the contention access scheme of the IEEE 802.15.4 exponential back-off process is modeled through an extended Markov chain that takes into account channel, retry limits, acknowledgements, unsaturated traffic, and superframe period. Second, the behavior of the TDMA access scheme is modeled by another Markov chain. Finally, the two chains are coupled to obtain a complete model of the hybrid MAC. By using this model, the network performance in terms of reliability, average packet delay, average queuing delay, and throughput is evaluated through both theoretical analysis and experiments. The protocol has been implemented and evaluated on a testbed with off-the-shelf wireless sensor devices to demonstrate the utility of the analysis in a practical setup. It is established that the probability density function of the number of received packets per superframe follows a Poisson distribution. It is determined under which conditions the guaranteed time slot allocation mechanism of IEEE 802.15.4 is stable. It is shown that the mutual effect between throughput of the random access and the TDMA scheme for a fixed superframe length is critical to maximizing the overall throughput of the hybrid MAC. In high traffic load, the throughput of the random access mechanism dominates over TDMA due to the constrained use of TDMA in the standard. Furthermore, it is shown that the effect of imperfect channels and carrier sensing on system performance heavily depends on the traffic load and limited range of the protocol parameters. Finally, it is argued that the traffic generation model established in this article may be used to design an activation timer mechanism in a modified version of the CSMA/CA algorithm that guarantees a stable network performance. 287613
publications-844 CONFERENCE PROCEEDING 2013 Boem, F. Distributed fault detection using sensor networks and Pareto estimation 10.23919/ecc.2013.6669439 Data Management & Analytics Precipitation & Ecological Systems No abstract available 287613
publications-845 CONFERENCE PROCEEDING No year available Nikitaki, S. Efficient training for fingerprint based positioning using matrix completion 10.5281/zenodo.43028 Uncategorized Uncategorized No abstract available 287613
publications-846 CONFERENCE PROCEEDING Asensio-Marco, C. Asymmetric average consensus under SINR-based interference Simulation & Modeling River Basins No abstract available 287613
publications-847 CONFERENCE PROCEEDING Alustiza, I. Bandwidth-reduction analog mappings for AWGN channels with side information Simulation & Modeling Hydropower Dams & reservoirs No abstract available 287613
publications-848 CONFERENCE PROCEEDING Hernández-Peñaloza, G. Distributed estimation of statistical correlation measures for spatial inference in WSNs Data Management & Analytics Precipitation & Ecological Systems No abstract available 287613
publications-849 CONFERENCE PROCEEDING No year available Alustiza, I. Multiple description analog joint source-channel coding for parallel channels with side information 10.5281/zenodo.42958 Data Management & Analytics Precipitation & Ecological Systems No abstract available 287613
publications-850 PEER REVIEWED ARTICLE Daniel E. Orenstein An ecosystem services inventory: Lessons from the northern Negev Long-Term Social Ecological Research (LTSER) platform AI & Machine Learning Hydropower Dams & reservoirs No abstract available 295271