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This study explores the channel preference of a platform and a green manufacturer in an online market. The platform offers both the agency channel and the reselling channel, while the manufacturer designs a green product to improve the green effort and sells it through the platform. We find that the manufacturer’s channel preference is determined by the interaction of the green investment, the commission rate, and the competition intensity. In contrast, the online platform prefers the hybrid channel when both the commission rate and green investment inefficiency are moderate but prefers the agency channel otherwise. Interestingly, the manufacturer can change its sales center between the reselling channel and the agency channel, thus resulting in a win–win outcome for the manufacturer and the platform by selecting the hybrid channel. This study reveals the benefits of green product selling in an online market and provides useful guidelines for green product manufacturers and platform managers in improving their strategic selling channel.

Longitudinal vibration, torsional vibration and their coupled vibration are the main vibration modes of the crankshaft-sliding bearing system. However, these vibrations of the propeller-crankshaft-sliding bearing system generated by the fluid exciting force on the propeller are much more complex. Currently, the torsional and longitudinal vibrations have been studied separately while the research on their coupled vibration is few, and the influence of the propeller structure to dynamic characteristics of a crankshaft has not been studied yet. In order to describe the dynamic properties of a crankshaft accurately, a nonlinear dynamic model is proposed taking the effect of torsional-longitudinal coupling and the variable inertia of propeller, connecting rod and piston into account. Numerical simulation cases are carried out to calculate the response data of the system in time and frequency domains under the working speed and over-speed, respectively. Results of vibration analysis of the propeller and crankshaft system coupled in torsional and longitudinal direction indicate that the system dynamic behaviors are relatively complicated especially in the components of the frequency response. For example, the 4 times of an exciting frequency acting on the propeller by fluid appears at 130 r/min, while not yield at 105 r/min. While the possible abnormal vibration at over-speed just needs to be vigilant. So when designing the propeller shafting used in marine diesel engines, strength calculation and vibration analysis based only on linear model may cause great errors and the proposed research provides some references to design diesel engine propeller shafting used in large marines.

This paper presents some properties and interrelationships of terminal reliability functions of probabilistic communication networks with distinct element reliabilities. Based on topological techniques a synthesis procedure as well as realizability conditions are given. In addition, a uniqueness theorem is proved.

This correspondence presents a method of realizing a set of open-circuit RC impedance functions z_{11}, z_{12}, ,, , z_{22} , z_{23} , ,, , z_{rr} ,,. A simple and systematic technique of determining the parameter matrices is developed by using linear transformations. A pertinent network is obtained through the realization of the conductance parameter matrix by a single-element-type network for the tree configuration, and the capacitance matrix is obtained by connecting unit capacitors to the appropriate nodes.