The growing number of ontologies on the web has emerged new research issues in the field of semantic web. It is now common to have more than one ontologies on the web for a specific domain. These ontologies may have various types of heterogeneities and therefore it is a challenging task for information retrieval systems to utilize the knowledge of all available ontologies. A number of ontology ...

Human Activity Recognition (HAR) has a growing research interest due to the widespread presence of motion sensors on user’s personal devices. The performance of HAR system deployed on large-scale is often significantly lower than reported due to the sensor-, device-, and person-specific heterogeneities. In this work, we develop a new approach for clustering such heterogeneous data, represented ...

1. Introduction For analyzing the mobility of diffusing molecules, single molecule experiments are well established. Experiments in ultra-thin liquid films revealed a heterogeneous behavior of diffusion [1], which could be explained by a layering of liquids at solid interfaces as reported in [2]. Consequently, a layer model with layer-dependent diffusion coefficient was developed. Layer transit...

Landslides in tropical and sub-tropical regions are generally associated with weathered rock profiles which often possess chemical and mineralogical heterogeneities at materialand mineral-scales. Such heterogeneities reach a climax by the occurrences of oxyhydroxideand clayrich zones. Weakness and low permeability of these zones makes them ideal for the development of slip zones along which lan...

The effects of plasticization of poly(methyl methacrylate) glass on the boson peaks observed by Raman and neutron scattering are compared. In plasti-cized glass the cohesion heterogeneities are responsible for the neutron boson peak and partially for the Raman one, which is enhanced by the composition heterogeneities. Because the composition heterogeneities have a size similar to that of the co...

We study the influence of heterogeneities located near a planar surface on the elastic response of a three-dimensional elastic medium. These heterogeneities can be either reinforcements, like steel reinforcements in concrete, or defects, like micro-cracks periodically distributed. We prove that their influence is of the second order from an energetic viewpoint. Then, we propose an “up to second...

Model transformations play a key role in the vision of ModelDriven Engineering. Thereby, the resolution of structural heterogeneities between metamodels (MMs) represents the key challenge. For this task, current approaches require the definition of partly tricky, low-level recurring transformation logic but neglect to offer reusable components. Moreover, little attention has been paid to hetero...

Translational diffusion of single perylene diimide molecules in 25 nm thin polymer films was investigated by single molecule widefield fluorescence microscopy. Spatial heterogeneities in single molecule motion were detected and analyzed by a new, quantitative method which draws a comparison of log-Gaussian fits of experimentally determined diffusion coefficient-distributions and diffusion coeff...

Although the formation of dynamic heterogeneities in glass-forming materials is believed to play an essential role in determining their properties as the glass transition is approached, direct imaging of these heterogeneities remains a challenge. Here, we report on a direct observation of nanoscale dynamic heterogeneities and their time evolution over ~10(3) s on the surface of a glassy polymer...

As the number of text retrieval systems (search engines) grows rapidly on the World Wide Web, there is an increasing need to build search brokers (metasearch engines) on top of them. Often, the task of building an eeective and eecient metasearch engine is hindered by the heterogeneities among the underlying local search engines. In this paper, we rst analyze the impact of various heterogeneitie...