Genetic algorithm behavior is determined by the exploration/exploitation balance kept throughout the run. When this balance is disproportionate, the premature convergence problem will probably appear, causing a drop in the genetic algorithm's eecacy. One approach presented for dealing with this problem is the distributed genetic algorithm model. Its basic idea is to keep, in parallel, several s...

Let $G$ be a locally compact group, $H$ be a compact subgroup of $G$ and $varpi$ be a representation of the homogeneous space $G/H$ on a Hilbert space $mathcal H$. For $psi in L^p(G/H), 1leq p leqinfty$, and an admissible wavelet $zeta$ for $varpi$, we define the localization operator $L_{psi,zeta} $ on $mathcal H$ and we show that it is a bounded operator. Moreover, we prove that the localizat...

This study investigates the mechanical and thermophysical performance of cement mortars incorporating microencapsulated phase change materials (mPCMs), which consist an aqueous dispersion 100% bio-based fine core–shell particles. A specific protocol was used to manufacture mortar samples, ensures a homogeneous particle distribution prevents microcapsule leakage. The addition mPCMs causes both d...

one of the necessary preconditions to the establishment and stability of optimal currency area is the homogeneity of the economic structure in member states. but place with eurozone currency crisis, the question arises whether the economic structure of the eurozone countries were homogeneous? accordingly, this study by using an econometrics model and estimating it by panel data method, has been...

task graph scheduling is a multi-objective optimization and np-hard problem. in this paper a new algorithm on homogeneous multiprocessors systems is proposed. basically, scheduling algorithms are targeted to balance the two parameters of time and energy consumption. these two parameters are up to a certain limit in contrast with each other and improvement of one causes reduction in the other on...

Exact solutions have always played a central role in the investigation of physical theories whose content is encoded in a complicated set of di erential equations. The theory of general relativity is indeed an example of this. A number of exact solutions of Einstein's eld equations have been of key importance in the discussion of physical problems. Solutions have been found which describe black...

The research area of nonlinear partial differential equations (NLPDEs) has been very active for the past few decades. The study of the exact solutions of a nonlinear evolution equation (NLEE) plays an important role to understand the nonlinear physical phenomena which are described by these equations. In recent years several powerful and efficient methods have been developed for finding analyti...

There are just five Fraı̈ssé classes of permutations (apart from the trivial class of permutations of a singleton set); these are the identity permutations, reversing permutations, composites (in either order) of these two classes, and all permutations. The paper also discusses infinite generalisations of permutations, and the connection with Fraı̈ssé’s theory of countable homogeneous structures,...

We consider the stabilization problem for three dimensional homogeneous polynomial systems, and derive an intrinsic suucient condition for stablizability. We show that this condition is satissed by an open set in the space of homogeneous systems of a xed degree.