Newton’s iteration method is widely used in numerical methods, but its convergence low. Though a higher order algorithm leads to fast convergence, it always complex. An optimal formulation much needed for both and simple calculation. Here, we develop two-step fourth-order iterative based on linear combination of two schemes nonlinear equations, explore the criteria proposed also demonstrate val...

The Precipitation nowcasting can provide high-resolution forecasts of rainfall and hydrometeors in 2 hours play an important role risk management for flash flood debris flow events, but it is a very challenge work. This study proposed new method which combine XGBoost the PPLK model precipitation (XGB-PPLK). was assessed four different types storms, experimental results show that XGB-PPLK improv...

Essential proteins are important participants in various life activities and play a vital role the survival reproduction of life. The network-based centrality methods common way to identify essential for protein interaction networks. Due differences between existing methods, it is feasible approach improve identification accuracy by combining methods. In this paper, we propose combination metho...

in this paper, a new spectral-iterative method is employed to give approximate solutions of fractional logistic differential equation. this approach is based on combination of two different methods, i.e. the iterative method cite{35} and the spectral method. the method reduces the differential equation to systems of linear algebraic equations and then the resulting systems are solved by a numer...

In recent years some multi-mode pushover procedures taking into account higher mode effects, have been proposed. The responses of considered modes are combined by the quadratic combination rules, while using the elastic modal combination rules in the inelastic phases is not valid. Here, an optimum weighted mode combination method for nonlinear static analysis is presented. Genetic algorithm is ...