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借鉴报酬激励的梯度效应,运用委托代理理论,研究了信息不对称条件第四方物流外包时对第三方物流的激励问题.研究结果表明:第三方物流获得高业绩的可能性越小即任务挑战性越强,第四方物流应该给予其的激励越多;激励梯度使激励契约与任务属性、第三方物流能力与效益以及第四方物流付出的代价密切关联;激励梯度的存在不影响第四方物流努力水平. 相似文献
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Bifurcation and chaos analysis of a nonlinear electromechanical coupling relative rotation system
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Hopf bifurcation and chaos of a nonlinear electromechanical coupling relative rotation system are studied in this paper. Considering the energy in air-gap field of AC motor, the dynamical equation of nonlinear electromechanical coupling relative rotation system is deduced by using the dissipation Lagrange equation. Choosing the electromagnetic stiffness as a bifurcation parameter, the necessary and sufficient conditions of Hopf bifurcation are given, and the bifurcation characteristics are studied. The mechanism and conditions of system parameters for chaotic motions are investigated rigorously based on the Silnikov method, and the homoclinic orbit is found by using the undetermined coefficient method. Therefore, Smale horseshoe chaos occurs when electromagnetic stiffness changes. Numerical simulations are also given, which confirm the analytical results. 相似文献
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