在此背景下，本文以经济学效用概念的演化为主线展开研究，深入探讨经济人假设的合理性、局限性以及经济学的研究对象和研究方向。
Under the background, we focus on the deduction of the concept "utility" in economics and analyze the rationality and limitation of "economical man" and the research object and direction of economics.
本文以经济学的市场结构理论为基础，分析了国有地勘经济应该从某些行业退出的必要性以及退出的途径；阐述了国有地勘经济应该进入的行业和措施。
Based on the theory of market structure in the economics, the paper shows the necessity and way of which state-owned geological prospecting economy should retreat from some industries.
本文以聚集经济理论为基础，从经济学的视角探讨了导致城市聚集的社会动力结构及其实现机制。
This paper studies the social motive power structure and achievement mechanism of urban agglomeration by applying this theory from the economics perspective.
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