1. School of Business Administration, Shandong University of Finance and Economics, Jinan 250014, China
2. Jinan Urban Planning and Design Institute, Jinan 250001, China
3. Shandong Institute of Geological Sciences, Jinan 250013, China
4. Key Laboratory of Gold Mineralization Processes and Resources Utilization, Key Laboratory of Metallogenic-Geologic Processes and Comprehensive Utilization of Minerals Resources in Shandong Province, Jinan 250013, China
5. School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China