l. yu

This study investigates the impact of demographic factors and skill enhancements on salary increments at Guangzhou Wangming Water Joy Design Co., Ltd., a leading Chinese company in the water park equipment sector using Light-Resin Transfer Molding technology. It aims to propose targeted strategies for boosting employee welfare and enhancing the company's competitive edge and organizational success. Employing a quantitative descriptive research approach, the study collected data through survey questionnaires from 224 employees, including 196 teachers and 28 supervisors. The analysis involved calculating percentages and frequencies to describe respondent demographics and using weighted means to assess factors influencing salary increments and employee welfare. Founded in 2006 and now operating in over 30 countries, the company demonstrates a significant global presence. Workforce analysis revealed a predominantly male demographic (63.33%) and a significant concentration of employees aged 36-45 years (83.33%), indicative of a mature and experienced employee base. Crucially, skill enhancement correlated strongly with salary progression, and structured professional development was linked to high employee satisfaction. Key measures included a mean satisfaction rating of 4.15 for work-life balance initiatives and a mean effectiveness rating of 4.20 for training programs. Based on the findings, it is recommended that the company integrate historical narratives into employee training programs to foster organizational pride and loyalty. Furthermore, expanding diversity and inclusion efforts, emphasizing continuous learning, enhancing welfare programs, and instituting adaptive feedback mechanisms are essential for addressing the complexities of employee demographics and improving salary increment practices. These strategies are vital for promoting employee welfare and reinforcing the company's competitive stance in the global market.

In this study, the flow characteristics of two-dimensional corrugated walls with perforation are investigated using particle image velocimetry (PIV) experiments. Analysis of the flow on perforated corrugated walls at perforation ratios φ = 1%, 2.5%, 5%, 10% and the same wavelength Reynolds number, Reλ, shows that the friction coefficient, Cf, decreases with increasing perforation ratio, φ, and the followability becomes more obvious, indicating that perforations on the corrugated wall can reduce the drag. Analysis of the dimensionless circulation, G+ Q, reveals that the perforation effectively controls separation on the corrugated wall, which is consistent with observations of the recirculation area. After elucidating the mechanism of action of the perforation on the corrugated wall, the turbulence characteristics at different Reynolds numbers are explored for φ = 2.5% by varying the velocity of the flow field. When Reλ = 8800, the free flow velocity is insufficient to achieve the inverse pressure gradient required to produce stable separation in the flow field. With an increase in Reλ, the recirculation region in the time-averaged flow field becomes incomplete due to the effect of the perforation, and the turbulent fluctuation is also weakened. The following behavior of the friction coefficient, Cf, with the oscillations of the wave crest and trough also differs from the behavior observed with increasing wavelength Reynolds number, Reλ.