Titlebook: Essential Perturbation Methods; C.Y. Wang Book 2023 The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer N

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2690-0300 to understand and apply perturbation methods to difficult problems with applications in mathematics, engineering, and biology.  Discussions on new perspectives, simpler presentations on convergence, and the expansion of integrals are included.  . . .    .978-3-031-26547-1978-3-031-26545-7Series ISSN 2690-0300 Series E-ISSN 2690-0327

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The Phase Plane,ependent variable does not explicitly appear in the equation. This is often true for most physical problems, where the governing equation is independent of location or time. A knowledge of the phase plane is helpful for choosing the proper perturbation method. For example, the perturbation method us

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Optimal Location of Concentrators in a Centralized Teleprocessing Network,rminals they can accommodate. The problem to solve consists of determining the optimal number and location of the concentrators and of linking the facilities in tree hierarchical structure at minimum cost, without exceeding line and concentrator capacities.

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The Use of SS7 and GSM to Support High Density Personal Communicationseater for cellular than for ISDN and 3–4 times greater for PCN than for cellular, depending on the Visitor Location Register placement. Our numerical results are very sensitive to assumptions on user mobility, cell size and location area size. This highlights the need for careful investigation of these parameters in specific applications.