Market structure and investment in the mobile industry

Foreign exchange market Movements and investment risk in the petrochemical industry

In this investigation, by the time series data of exchange rate and petrochemical industry stock index in the Tehran Stock Market from March 2009 to April 2019, a new Hybrid Model (resulting from the use of Exponential Generalized Autoregressive Conditional Heteroscedasticity, EGARCH, Model and Markov Switching Regime Model) is used. The results of study, in addition to confirming the idea of ​...

Market Structure and Price Adjustment in the Iranian Tea Market

Endogenous R&D Investment and Market Structure: A Case Study of the Agricultural Biotechnology Industry

Over the past three decades, the agricultural biotechnology sector has been characterized by rapid innovation, market consolidation, and a more exhaustive definition of property rights. The industry attributes consistently identified by the literature and important to this analysis include: (i) endogenous sunk costs in the form of expenditures on R&D; (ii) seed and agricultural chemical technol...

Foreign Investment and Consolidation in the Brazilian Mobile Telecommunications Market

During the implementation of market-based reforms in mobile telecommunications, the Brazilian Government opted for dividing the country in ten regions, thus creating a highly fragmented market. Later on, through several mergers and acquisitions the market was consolidated by three main foreign groups. This paper analyses the rationale behind the Government’s decision to fragment the market and ...

the underlying structure of language proficiency and the proficiency level

هدف از انجام این تخقیق بررسی رابطه احتمالی بین سطح مهارت زبان خارجی (foreign language proficiency) و ساختار مهارت زبان خارجی بود. تعداد 314 زبان آموز مونث و مذکر که عمدتا دانشجویان رشته های زبان انگلیسی در سطوح کارشناسی و کارشناسی ارشد بودند در این تحقیق شرکت کردند. از لحاظ سطح مهارت زبان خارجی شرکت کنندگان بسیار با هم متفاوت بودند، (75 نفر سطح پیشرفته، 113 نفر سطح متوسط، 126 سطح مقدماتی). کلا ...