Abdolrahim Badamchizadeh
Volume 17, Issue 52 , October 2012, Pages 1-8
Abstract
In this paper, cost and profit analysis of a queueing system with k phases heterogeneous services and vacation is studied. The service times and vacation times have general distribution. It is assumed that the time between two successive arrivals has exponential distribution. Also we assume that service ...
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In this paper, cost and profit analysis of a queueing system with k phases heterogeneous services and vacation is studied. The service times and vacation times have general distribution. It is assumed that the time between two successive arrivals has exponential distribution. Also we assume that service times, vacation time and inter arrival time are independent. After completion of k phases of services, for same reasons, the server takes vacation with given probability and after completion of this period, the server waits idle for a client. Considering the importance of economic factors and optimization in queueing systems, in this model we define expected total cost for finding the optimum service rate. Also with expected total revenue, the total profit of system in analyzed in comparison to total cost of system. Finally in a case study, with special distributions and numerical methods the validity of system is studied with respect to its parameters.
Abdolmajid Jalaee; Amir Habibdoost
Volume 17, Issue 52 , October 2012, Pages 9-32
Abstract
In this paper we examine the relationship between exchange rate movements and stock return (Firm value), which is known as Exchange Rate Exposure, using a Time-Scale approach in different sectors of Tehran Stock Exchange (TSE). In this regard, we decompose the exchange rate percent ...
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In this paper we examine the relationship between exchange rate movements and stock return (Firm value), which is known as Exchange Rate Exposure, using a Time-Scale approach in different sectors of Tehran Stock Exchange (TSE). In this regard, we decompose the exchange rate percent changes and stock return over the period 1998-2008, as well as the period 2004-2008(according to data limitation), by applying MODWT method; moreover, we run wavelet base regression and analyze wavelet variance, covariance and correlation. Results reveals that exchange rate exposure not only differs from one sector to other sector but it also differs through time scales. Hence, this issue should be considered as a multi scales problem.
Masoud Derakhshan
Volume 17, Issue 52 , October 2012, Pages 33-71
Abstract
We first define and briefly examine the “imitative” and “indigenal” approaches in conventional economic theories from an Islamic Economic perspective. We then review briefly the concepts of “indigenous” and “indigenization” in the humanities and social ...
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We first define and briefly examine the “imitative” and “indigenal” approaches in conventional economic theories from an Islamic Economic perspective. We then review briefly the concepts of “indigenous” and “indigenization” in the humanities and social sciences from the points of view expressed by Imam Khomeini (ره) and the Supreme Leader. We have subdivided the “indigenal approach” into “comparative” and “foundational” approaches. It is shown that in the comparative approach, a critical analysis of the underlying assumptions in economic theories, and specifying the shortcomings of the logic of abstraction employed in economic theorization particularly in identification of economic players and their status in conventional economic theories, can be productive. However, this approach suffers from the lack of adequate potentialities for successful theorization in Islamic Economics, hence cannot be used as a basis for economic policy formations. The paper concludes by proposing the foundational approach as the only solution to indigenization of economics as well as the necessary condition in building Islamic-Iranian model of economic progress.
Seyyed Jalal Dehghani Firoozabadi; Mokhtar Salehi
Volume 17, Issue 52 , October 2012, Pages 73-114
Abstract
This paper intends to study the role and significance economic diplomacy in the era of globalization. It then examines the performance of Iranian foreign policy and its interaction with global economy. The main challenges are reviewed, and major areas of activities evaluated. Five basic indices of globalization ...
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This paper intends to study the role and significance economic diplomacy in the era of globalization. It then examines the performance of Iranian foreign policy and its interaction with global economy. The main challenges are reviewed, and major areas of activities evaluated. Five basic indices of globalization were taken to be applied to the case of Iran evaluation of its performance in the course of globalization. Subsequently, the nature of relationship between Iranian economic diplomacy and indices of globalization in the areas of economic globalization, privatization, competition, foreign investment and development of ICT was analyzed and demonstrated.
Hassan Sobhani; Majid Habibian Nagibi
Volume 17, Issue 52 , October 2012, Pages 115-141
Abstract
Risk and benefit are key concepts of capital market. This issue has been studied sufficiently in various models of the conventional literature, with all its advantages and disadvantages. Islamic capital market often faces with new instrument. Thus, risk management in its discussions suffers from noticeable ...
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Risk and benefit are key concepts of capital market. This issue has been studied sufficiently in various models of the conventional literature, with all its advantages and disadvantages. Islamic capital market often faces with new instrument. Thus, risk management in its discussions suffers from noticeable poverty. Sukuk Manfe'ah (benefit securities) is one of the latest instruments for Islamic capital market. This paper assumes the readers are familiar with the nature of sukuk manfe'ah (benefit securities), so it explains the risks in this market and the sides who take that. Then this paper tries to analysis the risk and the benefit of the sukuk manfe'ah (benefit securities) according to the capital asset pricing model (CAPM). Undoubtedly, the main role of this paper in knowkedge production, is to use the capital asset pricing model (CAPM) in Islamic capital market, which so far is unprecedented.
mohammad amin Kouhbor
Volume 17, Issue 52 , October 2012, Pages 143-168
Abstract
In this article Iranian expenditure for dairy is estimated using rural and urban income expenditure survey of 1388. The aim is to examine the factors affecting participation and consumption decision for dairy food on Iranian households. So, we applied box- cox double hurdle modeling adjusted for heteroscedasticity ...
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In this article Iranian expenditure for dairy is estimated using rural and urban income expenditure survey of 1388. The aim is to examine the factors affecting participation and consumption decision for dairy food on Iranian households. So, we applied box- cox double hurdle modeling adjusted for heteroscedasticity and non normality. Subsequently utilizing the estimated coefficients with STATA programming, expenditure elasticities were calculated at the mean and the margin. Results indicate the effects of demographic variables such as age, urban or rural, education, and household size on dairy expenditure. also, economic variables such as own price, household's income and dairy price index can be affect the dairy expenditure payed by each household.
Hossein Mohammadi; Aida Ariabod
Volume 17, Issue 52 , October 2012, Pages 169-181
Abstract
Exchange regimes at the international level, over many years have several ups and downs and they affect the economic structure of countries. Different exchange regimes show how to determine the exchange rate in the economy. The impact of exchange rate regimes on trade is one of the important issues that ...
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Exchange regimes at the international level, over many years have several ups and downs and they affect the economic structure of countries. Different exchange regimes show how to determine the exchange rate in the economy. The impact of exchange rate regimes on trade is one of the important issues that have been in many applied studies. Devaluation (i.e. increase in Real exchange rate), will cause examined the current account status to worsen and then after a short period, the situation may reverse and the current account state will improve. This change in the current account is called J-shaped curve. For current account in this paper, using a vector error correction model VECM and impulse response functions, Iran and South Korea's trade balance dynamics during the 1996 -2008 period was reviewed using quarterly data and J-shaped curve for current account tested. The results of tests did not confirm the hypothesis of the existence of a J-shaped curve between the trade balance and Real exchange rate over the studied period. The reaction of trade balance to an increase in exchange rate in the long term was found as negative and significant. In connection with the positive impact real income of South Korea on Iran's trade balance, results indicate this coefficient is significant. Also the reaction of trade balance with respect to Iran's real income is negative and significant.
Mohamad Naghi Nazarpoor; Ayoub Khazaei
Volume 17, Issue 52 , October 2012, Pages 183-209
Abstract
Along with other transitional developments Iranian capital market is also expected to expand and diversify in the course of country’s 20 year perspective development plan. Securities and exchange council has recently authorized several financial instruments in order to meet the needs of the market ...
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Along with other transitional developments Iranian capital market is also expected to expand and diversify in the course of country’s 20 year perspective development plan. Securities and exchange council has recently authorized several financial instruments in order to meet the needs of the market for financing various economic projects. One of these instruments is the “ISTISNA' Sukuk”. This paper introduces this new financial instruments and gives a clear description of it, and its various forms such as “debt purchase Sukuk”, “lease to own Sukuk”, and “mortgage based Sukuk”. Finally various features of the proposed sukuk are compared and analysed.
