这种数学模型的使用能使旅游学更具学科性，更能提高综合评判的信度和效度。而它的简单易行又使其颇具操作性，使学习这门古老经典的学科也为旅游学的发展又助上一臂之力。-This mathematical model enables the use of Tourism Studies of more disciplines, more comprehensive evaluation of the improve the reliability and validity. And it s easy t