Urmia University, Faculty of Economics and ManagementIranian Industrial Economics Studies2588-63122120181001An Evaluation of Monopoly Power of Manufacturing Sector in Iran11012090710.30466/iies.2020.51367.1012ENFarhad KhodadadkashiProfessor of Economics, Payam Noor University, Tehran ,IranSamaneh NoraniazadAssistant Professor of Economics, Payam Noor University ,Tehran ,Iran.Marziyeh Eshaghi GorjiPhD Student, Payam Noor, Tehran, IranJournal Article20180717This paper investigates the market structure in the manufacturing sector of Iran from 1995 to 2013. There are a number of competition measures that can be calculated. Due to the limited scope of this study, we employ a non-structural measure of competition, namely the Panzar-Rosse H-statistic. This is a widely used measure of competition which has a relatively modest data demand. As a complement, we have also calculated the value of two structural competitions indices: CR4 and HHI. The results obtained from the Panzar-Rosse test indicated a monopolistically competitive market structure for the manufacturing sector in Iran. On the other hand, the results obtained from HHI and CR4 showed a high level of concentration in Iranian industries with a decreasing trend and a high level of market concentration. Thus, half of the industries in Iran utilize effective monopoly structure. However, in general, the decline in concentration trend indicates that the monopoly reduced during the study.https://iies.urmia.ac.ir/article_120907_d5ac2919e6ecefa33d18c279247bd227.pdfUrmia University, Faculty of Economics and ManagementIranian Industrial Economics Studies2588-63122120181001The Effect of Islamic banking Contracts on Industry Sector's Value Added in Iran112112094210.30466/iies.2019.51844.1015ENSeyyed Ali Paytakhti OskooeDepartment of Economics, Tabriz Branch, Islamic Azad University, Tabriz, IranLaleh Tabaghchi AkbariYoung Researchers and Elite Club, Urmia Branch, Islamic Azad University, Urmia, IranJournal Article20190212The industrial sector has an undeniable role in the development process and is recognized as the engine of economic growth and capital accumulation. On the one hand, industrial sector expands the employing opportunities for the production factors, increasing the per capita income in society, and, on the other hand, accelerates the process of economic growth through the production and supply of the needs of other sectors of the economy. Islamic banking contracts are among the factors that are of great importance in the issues of production and creation of added value in Islamic economics and can have significant effects on the added value of the industrial sector in Islamic countries. In this study, the effect of Islamic banking contracts, in terms of Musharekat, exchange contracts and Qard-ul-hasanah contracts on value added of the industrial sector in Iran has been investigated during the years 1380 to 1395 (based on seasonal data). In order to estimate the effects of variables, the bounds testing and autoregressive distributed lag modeling (ARDL) approaches have been used. Regression results show that Islamic banking contracts in the short and long term have led to improvements in value added of the industrial sector in Iran,which these effects are equivalent to 0.2473, 0.2405 and 0.286, respectively.https://iies.urmia.ac.ir/article_120942_2823d44d4abd6255d145651747e59a4d.pdf