in this paper, we introduce hybrid of block-pulse functions and bernstein polynomials and derive operational matrices of integration, dual, differentiation, product and delay of these hybrid functions by a general procedure that can be used for other polynomials or orthogonal functions. then, we utilize them to solvedelay differential equations and time-delay system. the method is based upon ex...

A numerical method for finding the solution of nonlinear VolterraHammerstein integral equations is proposed. The properties of the hybrid functions which consists of block-pulse functions plus rationalized Haar functions are presented. The hybrid functions together with the operational matrices of integration and product are then utilized to reduce the solution of nonlinear Volterra-Hammerstein...

A new numerical method for solving the nonlinear mixed Volterra-Fredholm integral equations is presented. This method is based upon hybrid functions approximation. The properties of hybrid functions consisting of block-pulse functions and Bernoulli polynomials are presented. The operational matrices of integration and product are given. These matrices are then utilized to reduce the nonlinear m...

This paper presents a methodology for implementing the feature recognition system for achieving the Computer Aided Design/ Computer Aided Manufacturing (CAD/CAM) integration goals. The Featurebased modeling is being used to model the solid models. The features being considered in this paper is hole form feature. The input of the feature recognition system is the Standard for the Exchange of Pro...

We investigate the algebraic structure of the Feynman propagator with a general timedependent quadratic Hamiltonian system. Using the Lie-algebraic technique we obtain a normal-ordered form of the time-evolution operator, and then the propagator is easily derived by a simple “Integration Within Ordered Product” (IWOP) technique.It is found that this propagator contains a classical generating fu...

One of the benefits of software product line approach is to improve time-to-market. The changes in market needs cause software requirements to be flexible in product lines. Whenever software requirements are changed, software architecture should be evolved to correspond with them. Therefore, domain architecture should be designed based on domain requirements. It is essential that there is trace...

This article investigates aspects in the context of the step-wise development of software product lines. Specifically, we propose the integration of aspects into AHEAD, an architectural model for feature-based product line development. We introduce the notion of aspect refinement based on Aspectual Mixin Layers, a technique for implementing features. Aspect refinement enables a programmer to ev...

This article investigates aspects in the context of the incremental software development, i.e. software product lines. Specifically, we propose the integration of aspects into AHEAD, an architectural model for feature-based product line development. We introduce the notion of aspect refinement based on Aspectual Mixin Layers, a novel technique for implementing features. Aspect refinement enable...