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Algebraic dynamical system and Logistic mapping system was studied in this paper. Through the establishment of nonlinear equations in bifurcation points, the solution of the bifurcation values problem is analyzed. A more precise period-doubling bifurcation point optimization is proposed. Based on Mathematica program process, the optimization results are given. The precise bifurcation values and the...
Based on the statistics data of cargo throughput and GDP of Nanjing from 1978 to 2009, this paper analyzes the relationship between river port logistics and urban economic growth by employing co-integration theory and Granger causality test. The empirical result denotes that there exists a long-term equilibrium relationship and unilateral Granger causality relationship between river port logistics...
A basic part of the logistic management of companies is the purchasing function, and the appropriate evaluation and selection of vendors among them is one of the prime responsibilities of this function. Many conceptual and analytical models have been developed to solve the vendor selection problems. In this paper, the gray system theory and methods are applied to establish the vendor evaluation model,...
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