A5101819568- Data Management and Algorithms
- Geographic Information Systems Studies
- Constraint Satisfaction and Optimization
- Advanced Database Systems and Queries
- Flexible and Reconfigurable Manufacturing Systems
- Digital Innovation in Industries
- Corporate Governance and Management
- Innovation, Technology, and Society
- 3D Modeling in Geospatial Applications
- Network Security and Intrusion Detection
- Internet Traffic Analysis and Secure E-voting
- Computational Geometry and Mesh Generation
- Mobile Agent-Based Network Management
- German Literature and Culture Studies
- Rough Sets and Fuzzy Logic
- Cryptography and Data Security
- Data Mining Algorithms and Applications
- Semantic Web and Ontologies
- Business Process Modeling and Analysis
- Open Education and E-Learning
- Advanced Malware Detection Techniques
- Public Administration and Political Analysis
- ICT Impact and Policies
- Advanced Authentication Protocols Security
- Energy Efficient Wireless Sensor Networks
ActionAid
2024-2025
German Research Centre for Artificial Intelligence
2024
University of Florida
2013-2023
University of Applied Sciences Ravensburg-Weingarten
2009-2023
Universität Ulm
2015-2023
University of Applied Sciences Landshut
2016-2023
Fraunhofer Institute for Secure Information Technology
2003-2021
Folkwang University of the Arts
2021
Universidade Tecnológica Federal do Paraná
2019
Vontobel (Switzerland)
2018
Spatio-temporal databases deal with geometries changing over time. The goal of our work is to provide a DBMS data model and query language capable handling such time-dependent geometries, including those continuously that describe moving objects . Two fundamental abstractions are point region , describing for which only the position, or position extent, respectively, interest. We propose present as attribute types suitable operations, is, an abstract type extension language. This paper...
We consider spatio-temporal databases supporting spatial objects with continuously changing position and extent, termed moving . formally define a data model for such that includes complex evolving structures as line networks or multi-component regions holes. The is given collection of types operations which can be plugged attribute into any DBMS (e.g. relational, object-oriented) to obtain complete query language. A particular novel concept the sliced representation represents temporal...
End-to-end encryption for wireless sensor networks is a challenging problem. To save the overall energy resources of network, it agreed that sensed data need to be consolidated and aggregated on their way final destination. We present an approach (1) conceals end-to-end, by (2) still providing efficient in-network aggregation. The aggregating intermediate nodes are not required operate plaintext data. apply particular class transformation exemplarily discuss basis two aggregation functions....
For a long time topological relationships between spatial objects have been focus of research in number disciplines like artificial intelligence, cognitive science, linguistics, robotics, and reasoning. Especially as predicates they support the design suitable query languages for data retrieval analysis databases geographical information systems (GIS). Unfortunately, so far only defined applicable to simplified abstractions single points, continuous lines, simple regions. With introduction...
Investigates temporal changes of topological relationships and thereby integrates two important research areas: first, 2D that have been investigated quite intensively, second, the change spatial information over time. We investigate spatio-temporal predicates, which describe developments well-known relationships. A framework is developed in predicates can be obtained by aggregation elementary sequential composition. compare our with other possible approaches: one based on observation...
Whereas earlier work on spatiotemporal databases generally focused geometries changing in discrete steps, the emerging area of moving objects supports continuously. Two important abstractions are point and region, modelling for which only time-dependent position, or also shape extent relevant, respectively. Examples first kind entity all kinds vehicles, aircraft, people animals; latter hurricanes, forest fires, growth oil spills sea. The goal is to develop data models query languages as well...
Much research suggests that political experts are more likely to structure attitudes toward different issues in an ideologically consistent fashion. Based on recent studies of motivational influences social cognition, we hypothesize only with a high need evaluate—a strong motivation establish evaluations objects—may “apply” ideology variety issues. Data from the 1998 NES Pilot and 2000 used examine this hypothesis. While do show ideological constraint, relationship appears be limited...
To study the similarity between moving object trajectories is important in many applications, e.g., to find clusters of objects which share same pattern, and infer future locations a from its similar trajectories. define challenging task, since not only their change but also speed semantic features vary. In this paper, we propose novel approach measure The defined based on both geographic movements. Our can be used detect trajectory objects.
The exponential increase in proteomics data presents critical challenges for conventional processing workflows. These pipelines often consist of fragmented software packages, glued together using complex in-house scripts or error-prone manual workflows running on local hardware, which are costly to maintain and scale. MSAID Platform offers a fully automated, managed pipeline, consolidating formerly disjointed functions into unified, API-driven services that cover the entire process from raw...
This placebo-controlled, randomized, double-blind trial was designed to evaluate the efficacy of three prophylactic antiemetic regimens on postoperative nausea and vomiting (PONV) during patient-controlled analgesia (PCA) with morphine. We studied 286 elective surgical patients for 36 h postoperatively. Group 1 saline control. In Groups 2 3, metoclopramide or droperidol administered as an intravenous (IV) bolus then added morphine in PCA device. 4, tropisetron, a long-acting investigational...
Article Free Access Share on Abstract and discrete modeling of spatio-temporal data types Authors: Martin Erwig Praktische Informatik IV, Femuniversität Hagen, D-58084 GERMANY GERMANYView Profile , Ralf Hartmut Güting Markus Schneider Michalis Vazirgiannis Dept Informatics, Athens Univ. Economics & Business, Patision 76, 10434, Athens, GREECE GREECEView Authors Info Claims GIS '98: Proceedings the 6th ACM international symposium Advances in geographic information systemsNovember 1998 Pages...
Integrating spatio-temporal data as abstract types into already existing models is a promising approach to creating query languages. In this context, an important new class of queries can be identified which concerned with developments spatial objects over time, that is, ask especially for changes in relationships. Based on definition the notion predicate we provide framework allows build more and complex predicates starting small set elementary ones. These well used characterize...