Abstract A modified collocation method for the numerical solving boundary value problems of mathematical physics is proposed. The irregular arrangement nodes in problem domain can sharply increase accuracy solution by improving quality linear algebraic equations system, to which solved leads. Various basis functions systems are considered. proposed allows one obtain an approximate a wide range ...

In electrical protection, there is a method of protection buildings against atmospheric discharges called the electro-geometric or rolling sphere method. So far, it possible to achieve implementation this graphically, that is, representing through plans and technical drawings, conditions analyzed structure obtaining from these graphic representations parameters with consequent errors caused by ...