第三章在已有研究成果的基础上利用山东省统计年鉴提供的数据，首先建立回归模型，分析了消费对国民经济增长的巨大拉动作用；
In Part 3 on base of the research results we construct a regress model by the data of Shandong Statistic Year Book and illustrate the large drawing function of consumption to economics firstly.
发达国家经济学研究开始回归到其研究的最终目的——实现国民幸福的最大化，经济学由物质转向精神，快乐经济学应运而生。
The studies on economics in the developed countries began its return to the ultimate goal — the maximization of happiness of the people.
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