优化一段文本中的语法和风格。
一段学术论文摘要，包含7个句子。
下面是对原始学术论文摘要进行的优化：

原始文本：
This study aims to investigate the impact of employee training on job performance in the context of the hospitality industry. A sample of 200 employees was selected from 10 five-star hotels in a major city in China, and a questionnaire survey was conducted to collect data on their job training and job performance. The results of regression analysis indicate that employee training has a significant positive impact on job performance, with a beta coefficient of 0.689 (t = 13.886, p <0.01). This study also revealed that the relationship between employee training and job performance is moderated by job tenure, such that the positive effect of training is stronger for employees with shorter job tenure. The findings of this study contribute to the literature on employee training and job performance, and provide practical implications for the hospitality industry in developing effective training programs.

优化后的文本：
本研究旨在探究在酒店行业背景下，员工培训对工作绩效的影响。在中国一个主要城市的10家五星级酒店中，选取200名员工进行问卷调查，以收集有关他们工作培训和工作绩效的数据。回归分析结果表明，员工培训对工作绩效有显著正面影响，β系数为0.689（t = 13.886，p <0.01）。该研究还发现，员工培训和工作绩效之间的关系受工作年限的调节，对于工龄较短的员工，培训的正面影响更强。本研究的发现对员工培训和工作绩效的文献做出了贡献，为酒店行业制定有效的培训计划提供了实用的启示。