In this paper, we are concerned with the existence and multiplicity of no-node solutions of the Lazer-McKenna suspension bridge models by using the fixed point
It is shown that the measurement of only one component of the Wein’s spectrum of thermal radiation in range λT ≤ 3000 (°C μm) is sufficient to estimate
According to the characteristics and requirements of urban vegetable logistics and distribution, the optimization model is established to achieve the minimum di