technology advancement improves the way we interact with computer systems. keyboard, mouse, and touchpad provide an easier and more natural way of interaction with a computer system. nowadays, by introducing low cost and high performance depth cameras like kinect and xtion, new opportunities are available for creating even more natural interfaces. in this paper, a new model was demonstrated for...

For a measure μ on R, the situation is more subtle. One can always orthogonalize the subspaces of polynomials of different total degree (so that one gets a family of pseudo-orthogonal polynomials). The most common approach is to work directly with these subspaces, without producing individual orthogonal polynomials; see, for example [DX01]. One can also further orthogonalize the polynomials of ...

A key feature of meta-level architectures is the strict separation between the application and the non-functional requirements. In a baselevel, the application behaviour is modelled. Other requirements are handled in a meta-program. This makes both application and metaprogram reusable. We introduce a mechanism based on high-level declarative policies to overcome the di culty of tailoring a meta...

Independent Component Analysis (ICA) is a powerful tool with applications in many areas of blind signal processing; however, its key assumption, i.e. the statistical independence of the source signals, can be somewhat restricting in some particular cases. For example, when considering several images, it is tempting to look on them as independent sources (the picture subjects are different), alt...

Explicit Semantic Analysis (ESA) utilizes the Wikipedia knowledge base to represent the semantics of a word by a vector where every dimension refers to an explicitly defined concept like a Wikipedia article. ESA inherently assumes that Wikipedia concepts are orthogonal to each other, therefore, it considers that two words are related only if they co-occur in the same articles. However, two word...

The two main cooperative protocols in WLANs are the orthogonal and non-orthogonal ones. We consider this two different cooperative protocols with the amplify-andforward (AF) and decode-and-forward (DF) strategies. In each case, we study the information theoretic performance. Simulation results show that the non-orthogonal cooperative protocol achieves an optimal performance than the orthogonal ...

A matrix-valued measure Θ reduces to measures of smaller size if there exists a constant invertible matrix M such that MΘM∗ is block diagonal. Equivalently, the real vector space A of all matrices T such that TΘ(X) = Θ(X)T ∗ for any Borel set X is nontrivial. If the subspace Ah of self-adjoints elements in the commutant algebra A of Θ is nontrivial, then Θ is reducible via a unitary matrix. In ...