He studied how to build models and detect outliers in BL (l,l,l,l) models in time-domain framework. In the model building, the Box-Jenkins approach was closely followed. In the identification stage, time-domain based nonlinearity tests were considered to distinguish nonlinearity data set from linear time series data.
In general, identifying the order of bilinear model including BL(l,l,l,l) model is not possible yet due to the complexity of form taken by the moments of bilinear model. In the estimation stage, the nonlinear least squares method were used to estimate the parameters of BL(l,l,l,l) models. In the diagnostic stage, the residuals were examined to check the adequacy of model. In addition, the Akaike's information criteria, the Akaike's Bayesian information criteria and Schwarz's criterion were used for model companson purposes.Outliers exist due to many possibilities such as misrecording, disaster or
Further, the measures of outlier effect for AO, 10, LC and TC were derived using the least squares method. Their variances were obtained using bootstrap method. The detection of outliers was carried out by examining the maximum value of the standardized statistics of the outlier effects.
The outlier detection procedure for identifying the type of outlier at time point t was proposed. Simulation studies were carried out to study the performance of the procedure in BL (l,l,l,l) models. It was found out that, in general, the proposed procedure performed well in detecting outliers. As for illustration, the proposed procedure was applied on three hydrological data.
Data analysis optimizes cyber-physical systems in telecommunications and building automation
18.01.2017 | Fraunhofer-Institut für Algorithmen und Wissenschaftliches Rechnen SCAI
Brain-Computer Interface: What if computers could intuitively understand us
18.01.2017 | Technische Universität Berlin
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
10.01.2017 | Event News
09.01.2017 | Event News
05.01.2017 | Event News
18.01.2017 | Materials Sciences
18.01.2017 | Information Technology
18.01.2017 | Ecology, The Environment and Conservation