We present new iterative methods based on refinement process for solving large sparse Sylvesterobserver equations applied in state estimation of a continuous-time system. These methods use projection methods to produce low-dimensional Sylvester-observer matrix equations that are solved by the direct methods. Moreover, the refinement process described in this paper has the capability of improvin...

Abstract The development of the Internet and big data has led to emergence graphs as an important representation structure in various real-world scenarios. However, size increases, computational complexity memory requirements pose significant challenges for graph embedding. To address this challenge, paper proposes a multilevel embedding refinement framework (MERIT) based on large-scale graphs,...

It is possible to extract valuable insights about the functional properties of a system by identifying and inspecting community structure in network that models system. Community detection aims these structures from networks. Many methods have been proposed consider problem different perspectives. However, with emergence very large complex networks variety domains, there has growing need for ca...

The Hermite collocation method of discretization can be used to determine highly accurate solutions to the steady state one-dimensional convection-diffusion equation (which can be used to model the transport of contaminants dissolved in groundwater). This accuracy is dependent upon sufficient refinement of the finite element mesh as well as applying upstream weighting to the convective term thr...

the aim of this research is to investigate the relationship between leader – member exchange and organizational citizenship behavior, and considering the mediating role of psychological empowerment and organizational commitment. the sample consisted of 250 employees of marun oil and gas producing company who were selected by simple random sampling method. the instruments which used in this rese...