fuzzy regression model

Proper policies in the expansion of cultural and artistic commodities are one of the important components in accelerating economic development and can be a source of foreign exchange earnings for the country's economy. Given the importance of this study, the present study explores the factors affecting the trade of cultural and artistic goods, including the Internet in OPEC members during 2013-2019. Therefore, with the help of the fuzzy regression model, a different perspective is presented. Due to the capabilities of the fuzzy regression model, the intensity of the influence for each of the factors affecting the trade of cultural and artistic goods as centers, the right and left fuzzy width of the fuselage is calculated by countries. The results of fuzzy right width for Iran indicate that the impact of the Internet, GDP, the exchange rate and tariff on the trade and artistic goods of Iran, respectively 3.067e-13, 0.951, 0.783 and 2.4315e-13 It is attention. The role of the Internet in Iranian trade is insignificant compared to other countries. Therefore, it is recommended that appropriate policies be provided to expand the Internet to increase the trade of cultural goods.

The ultimate goal of any improvements that provide higher quality product or service is customer. The most common methodology, Six Sigma and Lean Six Sigma methodology is DMAIC. This methodology based on five phases: defining the problem, measure, analyze, improve and control is defined. In the meantime one of the most important phases, phase analysis because in this phase of the root causes of potential due to its effects on the quality of critical factors are identified and defined. The purpose of this study is to assess the impact of process variables on the length of time in Lean Six Sigma methodology using fuzzy regression model was. The results of the study showed that all five variables known to influence the length of time to process. The results also showed that three variables: inadequate staff skills, and lack of necessary equipment, tools, and equipment breakdowns and tools necessary to have the greatest impact on the independent variable Also among these three variables inadequate staff skills, influential independent variable on the dependent variable. According to the research data and the number of variables, fuzzy regression model detailed and correct analysis of the impact of independent variables on the dependent variable was provided.