福建省中青年教师教育科研项目No.JA15372;国家自然科学基金No.51208490;厦门理工学院高层次人才科技类项目No.E2015028 Supported by the Young Teacher Project of Fujian ProvinceNo.JA15372,the National Natural Science Foundation of ChinaNo.51208490 and the High Level Talent Program of Xiamen University of TechnologyNo.E2015028