نتایج جستجو برای: multipliers
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Many occupations in industry such as metal stamping workers, electronics parts assembly operators, automotive industry welders, and lathe operators require working in a standing posture for a long time. Prolonged standing can contribute to discomfort and muscle fatigue particularly in the back and legs. This study developed the prolonged standing strain index (PSSI) to quantify the risk levels ...
Let G be a locally compact σ-compact group. Motivated by an earlier notion for discrete groups due to Effros and Ruan, we introduce the multidimensional Fourier algebra A(G) of G. We characterise the completely bounded multidimensional multipliers associated with A(G) in several equivalent ways. In particular, we establish a completely isometric embedding of the space of all n-dimensional compl...
The problem to find a valid integer flow with flow multipliers on nodes or arcs is long known to be NP-complete [10]. We show that the problem is still hard when restricted to instances with a limited number of integral multipliers. To find an integer minimum cost maximal pseudoflow, respecting only the node balance constraints of the inner nodes, is also still a difficult task. Further, we dem...
The problem of representation and approximation of linear operators by means of modification in the time-frequency domain is considered. Before turning to the discrete and sub-sampled case, a complete characterization of linear operators by means of a twisted convolution in the continuous time-frequency domain is suggested. Subsequently, existing results on approximation by time-frequency multi...
A new approach to error analysis of hybridized mixed methods is proposed and applied to study a new hybridized variable degree Raviart-Thomas method for second order elliptic problems. The approach gives error estimates for the Lagrange multipliers without using error estimates for the other variables. Error estimates for the primal and flux variables then follow from those for the Lagrange mul...
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