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Water jet propulsion is widely used in various military and civilian fields due to its advantages of simple structure and high propulsion efficiency. The process of mooring involves utilizing specially designed equipment to secure a ship at a designated berth. During the process of water jet propulsion, the single propeller operates within a complex and turbulent three-dimensional flow. Hence, studying the coupling between the water jet propeller and the hull is critical to comprehending the characteristics of the device and the distribution of the flow field in detail.

Firstly, we conducted computational fluid dynamics (CFD)-based self-propulsion calculations to evaluate the interaction between the hull and the propeller. We subsequently analyzed the propeller's performance and the forces acting on the hull to understand how the presence or absence of the hull influenced the water jet propeller. Finally, we performed calculations and analysis of the cavitation characteristics of the coupling between the hull and the water jet propeller, considering different rotational speeds and water depths at the bottom of the pool.

The study demonstrated that the presence of the hull boundary layer under the hull-propeller coupling condition led to reduced uniformity of propeller inlet flow and lower efficiency of the propulsion pump. However, it also increased the bias toward low-flow conditions. Additionally, increasing the impeller speed led to a gradual increase in the cavitation volume within the water jet propeller, resulting in a gradual decrease in the propeller's performance.

This research provides the technical support required for effective design and operation of water jet propulsion systems. This paper involves studying and analyzing the performance and flow field of the coupling between the hull and propeller under mooring conditions with a specified hull model.

The purpose of this study is to investigate the impact mechanism of green human resource management (GHRM) on employee organizational citizenship behavior for the environment (OCBE). The authors maintain that anticipated environmental pride and guilt serve as dual mediators on the relationship between GHRM and OCBE, while environmental value discrepancy between employees and coworkers of the employees serve as the moderator on this relationship.

For this study, 226 valid questionnaires were obtained from various industries (food, machinery, electronics, etc.) in China and a hierarchical regression analysis was performed.

The results revealed that GHRM exerts a direct influence on OCBE, as well as indirect effects through anticipated environmental emotions. Environmental value discrepancy moderates the relationship between GHRM and anticipated environmental emotions.

The contribution of this study is not only to investigate the emotional impact mechanism between GHRM and employee OCBE, but also to identify the boundary conditions for the effect of GHRM on employees’ anticipated environmental emotions. The authors' findings offer a new theoretical framework for future research on GHRM, as well as practical implications for researchers and managers in organizational environmental management.