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Abstract：
Revenues from international trade and transactions are crucial for the economic growth and macroeconomic activity of a country. For that reason, taxes from international trade and transactions are used to proxy revenues. Moreover, industrial production index is considered to be proxied for the economic growth. In this study, these variables are used monthly for the period of January 2006 and February 2022 for Turkey. First, different kinds of Fourier based unit root tests including flexibility and fractionality have been used to analyze the data structure. Then, linear VAR and Fourier VAR models have been estimated to reach and analyze the differences of the results of impulse responses between linear and trigonometric models. Finally, linear and Fourier term included Granger Causality tests have been used to question if there would be a difference or not. When the estimations and tests having Fourier structure have been established, the tests considering it have given more different results than linear models. Briefly, it has been shown that policy makers should shift their decisions to an alternative direction.
摘要：
国际贸易和交易的收入对于一个国家的经济增长和宏观经济活动至关重要。出于这个原因,国际贸易和交易中的税收用于代理收入。此外，工业生产指数被认为是经济增长的代理。在这项研究中,这些变量在土耳其2006年1月和2022年2月期间每月使用.首先,不同类型的基于傅立叶的单位根测试，包括灵活性和分数已被用来分析数据结构。然后，估计线性VAR和傅立叶VAR模型可以达到并分析线性模型和三角模型之间脉冲响应结果的差异。最后,线性和傅立叶项包括格兰杰因果关系检验已被用来质疑是否会有差异。当具有傅立叶结构的估计和测试已经建立时，与线性模型相比，考虑它的测试给出了更多不同的结果。简而言之，事实证明，决策者应该将决策转向另一个方向。
