Recent results on sparse coding and independent component analysis suggest that human vision first represents a visual image by a linear superposition of a relatively small number of localized, elongate, oriented image bases. With this representation, the sketch of an image consists of the locations, orientations, and elongations of the image bases, and the sketch can be visually illustrated by...

Many model transformation problems require different intermediate transformation steps. For example, platform-specific models (PSM) are often generated from platform-independent models (PIM) by chains of model transformations. This requires the presence of several intermediate meta-models between those of the PIM and the PSM. Thus, most of the effort is needed to define a transformation mechani...

In this paper, we define a model-driven design trajectory for contextaware services consisting of three levels of models with different degrees of abstraction and platform independence. The models at the highest level of platform independence describe the behaviour of a context-aware service and its environment from an integrated perspective. The models at the intermediateion and platform indep...

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Several recently developed model order reduction methods for fast simulation of large-scale dynamical systems with two or more parameters are reviewed. Besides, an alternative approach for linear parameter system model reduction as well as a more efficient method for nonlinear parameter system model reduction are proposed in this paper. Comparison between different methods from theoretical eleg...

Using a singular value decomposition of a beamline matrix, composed of many beam position measurements for a large number of pulses, together with the measurement of pulse-by-pulse beam properties or machine attributes, the contributions of each variable to the beam centroid motion can be identi ed with a greatly improved resolution. The eigenvalues above the noise oor determine the number of s...

The decay distribution of the kinematic variable ξu in inclusive charmless semileptonic decays of B mesons is unique. The novel method for a model-independent determination of |Vub| is described. To appear in Proceedings of the 3rd International Conference on B Physics and CP Violation Taipei, Taiwan, December 3-7, 1999 MODEL-INDEPENDENT DETERMINATION OF |Vub| CHANGHAO JIN School of Physics, Un...

Model transformation specifications are currently bound to a specific transformation execution engine, typically executed on desktop systems. This paper presents a novel approach to transform platform-independent model transformation specifications into platform-specific model transformation specifications, which can be executed for example by the runtime systems of process control systems empl...

Model transformation is one of the main issues and key elements in Model Driven Architecture (MDA). Computation Independent Model (CIM) to Platform Independent Model (PIM) transformation is the first transformation in MDA and it is very important in designing high quality software. Several CIM to PIM transformation approaches have emerged, they have not been objectively analysed yet. In this pa...