1111001-8484 IJCEE-IJENS © February 2011 IJENS I J E N S  Abstract— Despite the recreational parks in Universiti Teknologi Malaysia (UTM), many students are still facing difficulties in accessing these recreational parks within the campus because their locations and distances are not favorable for the students to access them from their on campus residential areas. Moreover, despite the enactme...

Complete row and column symmetry breaking in constraint models using the lex leader method is generally prohibitively costly. Double lex, which is derived from lex leader, is commonly used in practice as an incomplete symmetrybreaking method for row and column symmetries. Double lex is based on a rowwise canonical variable ordering. However, this choice is arbitrary. We investigate other canoni...

We present a fast and reliable algorithm, based on iso-surface techniques, to extract diierential invariant features at increasing scales. We show that it automatically nds the connection order of singularities, hence it is easy to follow features across scales. As an example, we visualize the orbits of corner points, and compare some criterions to measure their signiicance.

This paper gives two necessary and sufficient conditions of invariants of an m-ary form and one necessary and sufficient condition of covariants of an m-ary form. By these criterions we compute some invariants and covariants of anm-ary form. At last, two examples of computing the syzygies of invairants by the characteristic set method are given.

This paper discusses the synchronization of fractional order complex valued neural networks (FOCVNN) at the presence of time delay. Synchronization criterions are achieved through the employment of a linear feedback control and comparison theorem of fractional order linear systems with delay. Feasibility and effectiveness of the proposed system are validated through numerical simulations.

A positive definite even Hermitian lattice is called even universal if it represents all even positive integers. We introduce a method to get all even universal binary Hermitian lattices over imaginary quadratic fields Q( √ −m) for all positive square-free integers m and we list optimal criterions on even universality of Hermitian lattices over Q( √ −m) which admits even universal binary Hermit...