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The analysis of node influence plays important role in product marketing, public opinion analysis, disease transmission and other fields. Researchers have proposed a variety of methods to measure node influence, with the rapid expansion of the scale of social networks, Degree Centrality algorithm attracts much attention for its lowest time complexity, however, its result is not sufficiently accurate...
In this paper, a mathematical model for handover performance indicators in LTE(long time evolution) wireless networks is proposed with the aim of predicting handover parameters and improving handover reliability and efficiency, considering the impact and interdependency of key handover settings (offset, TTT, UE velocity, distance). The best combination of key parameters can be easily achieved by finding...
A variant of primal-dual interior point method (PDIPM) based on continuous Newton's method is proposed. In the new algorithm, the Newton's method in PDIPM is replaced with continuous Newton's method. The solution of the nonlinear equations of KKT conditions is transformed to solve a set of autonomous ordinary differential equations. Furthermore, many numerical integration methods (e.g., Runge-Kutta...
It is very important to assess transient stability and critical clearing time in power system. Traditional trial and error heuristic methods are costly and inaccuracy. Using interpolation formula or curve fitting method and proposing a general criterion for transient stability judgment, a nonlinear programming module that can calculate CCT directly is presented. With the technique of equivalent transformation...
Supply chain risk is dynamic and conductivity. The process of supply chain risk conduction has the characteristic of self-organizing. The dissipation characteristic, cooperation characteristic and coupling characteristic in the process of supply chain risk conduction are discussed in detail based on the self-organization theory, which can help to take precautions against supply chain risk, improve...
In an environment of purchasing management, many manufacturing firms have given increasing attention to strategic supplier selection in the effort of reducing the number of suppliers to support the advanced manufacturing mode. Decision methods for supporting supplier (vendor) selection process are typically multicriteria decision making in nature. Based on the analysis of measuring criteria for supplier...
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