an ideal orthodontic force system should exert continuous light force. thus, many efforts have been made to improve the memory characteristics of elastomeric chains. the aim of this study was to compare elastomeric chains (ecs) claimed by their manufacturers to offer high memory with traditional ones according to their force-extension diagrams.in this in-vitro study, ecs were divided into six g...

T his study investigates the effects of extra-ECOWAS merchandise trade and investment flows on the transmission of business cycles in the selected ECOWAS between 1985 and 2014.  The study finds that total trade and foreign direct investment (FDI) significantly influence the transmission of business cycles with elasticities of 1.1 and 0.7, respectively in the long run. There are little vari...

In this paper we apply global value chain (GVC) analysis to recent trends in the global automotive industry, with special attention paid to the case of North America. We use the three main elements of the GVC framework — firm-level chain governance, power, and institutions — to highlight some of the defining characteristics of this important industry. First, national political institutions crea...

Supply chain management (SCM) has rapidly emerged as the central field of competition in many industries and has captivated the top executives of companies in the recent past. Electronic commerce (EC) technologies have the potential to revolutionize how firms coordinate and manage their supply chain activities. This paper focuses on the emerging paradigm of Internetenabled supply chain manageme...

the aim this research is the diagnosis of production chains in oil’s regions of iran. for this reason, by using, input-output table for oil’s regions of iran,linkages and production chains are identified. the results of research indicate that although oil and natural gas sectors contain 50 percent of region’s output, but it is not a leading sector. in contrast, manufacturing of species of machi...

The importance of supply chains in pharmacological industry is remarkable so that nowadays many pharmacological supply chains have an effective and critical role for supplying and distributing drugs in health area. So, this study studies a three-echelon pharmacological supply chain contained multi-distributor of raw materials, a pharmaceutical factory, and multi-drug distributors companies such...

information technology is a critical tool for companies to achieve the competitive advantage and organizational innovation. it capability provides an appropriate opportunity for retailers to improve their relationships with customers and progress firms’ performance. comes with advances in technology, retail industry by using information technology has changed its business process from tradition...