فهرست مطالب shahriar nessabian

Agriculture is recognized as the driving force of economic growth, especially in developing economies. Attention to agriculture is extremely important, especially during economic sanctions owing to its critical roles such as income for rural people, food security, job creation, and foreign exchange earnings. On the other hand, foreign trade is vital to technology transfer to the country. The present study investigates the linear (nonlinear) relationship between agricultural import shocks and agricultural growth in Iran using annual data for the period 1978-2020 by application of the nonlinear autoregressive distributed lag model (NARDL). The results confirmed asymmetry in the impact of imports on growth. In other words, the superiority of the nonlinear model was in explaining the relationships between variables. To be specific, a positive and negative shock to agricultural imports affected sector growth by 0.18 and -0.05 percent, respectively in the long run. However, the latter was found statistically insignificant. Moreover, we found evidence of the asymmetry in the effect of other variables (except labor) on growth.

Economical profit is one of the important factors, persuading greenhouse owners to plant a specific crop. So, in addition to qualitative and quantitative land suitability evaluation, economical one can be carried out as well.

For this purpose, the present research was done for hydroponic greenhouse with various uses such as ornamental flowering branches and vegetables around Chaharmahal area. In this regards, economical land suitability evaluation was carried out, using various economical methods with ALES program.

The results showed that the economic suitability class for planting of rose branche, different types of ornamental flowers and cucumber, tomato and bell pepper in most methods is S1, S2 and N, respectively.

The plan for the construction of a greenhouse for the purpose of planting cucumber, tomato and bell pepper especially, planting of bell pepper with regard to the net income expected will be accompanied by bankruptcy. due to the costs and revenues, The most cost-effective type of greenhouses is the planting of rose branche flowers.

Knowledge is the source of economic growth and productivity growth, and its production and accumulation is at the top of the list of countries. Meanwhile, knowledge-based economics has become doubly important due to its emphasis on the knowledge component in economic issues. In this article, an attempt has been made; By theoretically explaining and designing a model and using econometric methods to investigate the impact of knowledge-based economy on the economic growth of Islamic countries (Barrow Salai Martin model test) so that the empirical effect of this relationship can be analyzed. . The statistical population of this study includes Islamic and multi-religious countries (a large part of the Muslim population). Based on the availability of information from the studied countries, including; Azerbaijan, Jordan, Uzbekistan, Indonesia, Iran, Pakistan, Tajikistan, Turkey, Tunisia, Sudan, Kyrgyzstan, Kazakhstan, Lebanon, Egypt, India. The scope of the research is from 2009 to 2019. To collect the required statistics and quantitative information, statistical tables and global databases and the International Monetary Fund and the economical model of structural autoregression panel have been used. Using Fisher test and Johansen co-integration test, static and long-run relationships of variables were examined. It was shown that all variables are at zero level and based on the results of effect statistics and maximum eigenvalue, there are five long-term relationships at 0.95 level between variables. Then, using shock analysis and analysis of variance, it was shown that the knowledge-based economy index affects the economic growth of Islamic countries.

Nowadays, paying attention to technology and its management is very important for companies so that they can achieve higher performance for themselves. The purpose of this study is to investigate the role of technology management on organizational performance based on the perspective of innovation and quality. The statistical population of the present study includes the employees of knowledge-based companies based in Tehran. According to Morgan table and simple random sampling method, 135 employees of these companies were selected as the sample size. Data collection was performed using standard questionnaires. Data analysis was performed using tests of significance coefficients and path coefficients in PLS software. The results indicate that technology management has a positive and significant effect on product quality, process innovation and product innovation.

Fluctuations of oil price and petroleum products have had different effects on great economic variables. One of these cases would be Dutch Disease in some countries. The aim of this paper is to study The effect of Oil Price Fluctuation on the Price of Agricultural Products.

In this paper we used the PVAR method. The statistical information of 14 oil-importing countries and 10 oil-exporting countries in the time period of 1990-2018 was used. The variables used in this study include corn price logarithm, rice price logarithm, soybeans price logarithm, wheat price logarithm, barley price logarithm, real currency rate logarithm, crude oil price logarithm, world oil production logarithm, world real economic activity logarithm and oil safety reserve logarithm.

The price reaction of these products to oil shocks, total demand and merchandise market are similar and meaningfully positive in both oil exporting and oil importing countries in terms of direction, intensity and pattern. The results indicate that the oil price shocks lead to an increase in the price of agricultural products.

It seems that to The results concluded out of price change estimations of agricultural products (corn and soybeans in particular) show that in addition to direct effect, oil shocks indirectly influence the price of agricultural products via total supply and demand shocks.

In this study, we investigated of contagion unanticipated shocks of oil price, exchange rate and gold price on the stock market in Iran using DFGM model, aiming to explain the dependence of financial markets in times of fluctuation financial markets in times of volatility. The data includes weekly Tehran Price Index, gold price, oil price and exchange rate from November 2008 to August 2019. The results show that about 99% of the exchange rate fluctuations and the total stock price index in the pre-crisis period are explained by the specific factor. But after the currency shock in January 2018, it was observed that at the end of the year 2018, 88 and 63 percent of the exchange rate fluctuations and the total price index of Tehran Stock, were explained by contagion factor, respectively. The results also show that the currency crisis (currency fluctuations), it has contagioned to the stock market. In addition, evidence of the impact of oil and gold price shocks on the Tehran Stock Total Price Index and the exchange rate was obtained.

The purpose of this paper is to investigate the long-term and short-term relationships between the behavior of gas and oil prices in regional markets and their impact on each other using the VECM correction method during the period 2000-2019. For this purpose, due to the wide range of variables in each region, proxy technique has been used to analyze the markets of gas and oil regions. The findings show that among the regional prices of the gas and oil market in Asia and Europe (unlike the US market), due to the relationship of aggregation, the influence of oil market fluctuations is very high. Due to the importance of the role of financial markets in facilitating oil and gas transactions, it is suggested that the major supply of oil and gas through the energy exchange be considered.

Understanding the price behavior of oil and gas for Iran as an influential member of OPEC has particular importance in macroeconomic and business decision-making. The present study aimed to investigate the long-term and short-term relationships of oil and gas price behavior in two major export markets of Iran and their effect on each otherBecause of the conditions in the gas sector, the price of Japanese imported gas can represent the Asian market, and in the EU market, the price of imported natural gas from Germany plays the same role, and in the oil sector, OPEC is also has major impact in the global oil market, this study examined the interaction of OPEC oil prices with Asian and European gas prices using the Vector Error Correction Method (VECM).The findings show that there is a significant cointegration and relationship between gas prices in the Asian and European markets and OPEC oil in the long run, and any deviation from the long-run equilibrium in the Asian and European markets at rates of 0.16, And 0.13 is respectively corrected. This in turn can be exploited in major gas export trends in the country.

The purpose of this paper is estimation of the effective factors on tea supply in Gilan province by using time series data during 1360-1390 in the form of nerlove model. According to the results, explanatory variables of the model could describe 97 percent of dependent variable (product supply) changes. The results show that the guaranteed price index of green tea leaf with elasticity 0/81 has more sensitive. In addition, tea supply with a lag and having elasticity 0/60, as well as, technology with elasticity 0/14 are the most effective factors on tea supply. Due to the elasticity coefficient of tea imports and the amount of rainfall, which are -0/024 and 0/029 respectively, these two variables did not affect the tea supply significantly.

Self-sufficiency is very important in the agricultural sector. The present paper seeks to study the effects of the World Trade Organization's establishment in 1995 on the wheat self-sufficiency production in five continents through the world. Whereas the production of quantitative analysis through the optimal value of agricultural production factors in a bid lead to self-sufficiency of comparative compared share of world grain production factors, before and after the establishment of the World Trade Organization is considered as the other verified goals in this case. In this regard in order to estimate the grain production function, functional Cobb-Douglas and Translog forms in the years 1995-1981 and 1996-2010 for the countries who are producing wheat, are evaluated by Panel data estimation method. The obtained results demonstrated during the 30 years period through 2010-1980, the process of self-sufficiency of wheat production in three continents as African, American and Asian, has enjoyed stability, while the establishment of the WTO led to the increase of grain self-sufficiency of the European continent and a reduction in grain self-sufficiency fluctuations in the Oceania continent. As well it will be determined also Cobb-Douglas function is considered as an optimal function to estimate. The consumed wheat's seed before World trade and the fertilizer after WTO have the most effects on the wheat yield. The share-placed labor force after World Trade has been decreased and the efficiency of this quality has been increased.

The present article studies role of Iran  export insurance fund on agricultural export sector by during 1385-1391.Since activity in agricultural sector is one of the most dangerous economical activities, and the most important problem of planners and politicians of agricultural development reducing risk of economic activities and increasing security coefficient for producers of agricultural sector is very important. Export credit and insurance institutions are established generally by governments for supporting counties export. In fact, many studies are based on insurance and economic growth variables; however, there is little attention to role of credit insurance institutions especially in agricultural sector by researches

Using Haskel theory, in this paper the main factors of change in wage ratios of agricultural and non-agricultural labor force are explored. Theoretically, the wage gap between these two sectors is explained by the gap between price and the one between TFP of these two sectors. In recent years, the wage gap between the two sectors has been decreasing in Iran. The international trade model (Haskel model) has been used in this paper and the results reveal that the major factor contributing to wage gap is the price one. The TFP is considered insignificant for wage gap. Mainly, the reason for increasing agricultural product index price, compared to that of non-agricultural index price has been government protection of agricultural products during these years.

Sugar is one of the main processed agricultural products whose consumption is increasing in the world. Currently a considerable share of total production and consumption belongs to rich countries such as EU members and U.S. These countries try to control the world market by using some support policies such as: export’s subsidy, low rate loans and high import tariffs. In this study the economic indicators of sugar world market are reviewed and economic situation of sugar industry in Iran is considered as well.

Locate Since the investment components of national production is therefore investments, should follow any particular methodology that the amount of capital and profits back to the point of maximum desire.In this article provinces of the indicators defined terms having the priority investment in agricultural activities and field ranked analysis of different areas of investment for national and regional programs running capital projects is provided.To do this technique factor analysis and numerical taxonomy analysis and cross section data from general agricultural census results in and population and housing 1385 used. Fars results showed that under most 1382 agricultural and boyer ahmad kohgiluyeh minimum capital formation has the ability.Reports by the ministry of commerce of buying wheat farmers in different provinces in recent years also confirm this result.

In this paper in order to evaluate the necessity of increasing job skills in ICT and also recognition of new job skills regarding changes of the structure of market labor after digital revolution, scientific change technology/ market labor change and indicators of ICT in Iran and other countries are analyzed. Results show that besides the possible of more effective investment made priory in ICT sector, it is also possible to provide an appropriate back ground for developing ICT infrastructure in economy, and creating new job for youth and graduates and also creating labor force productivity.

In order to allocate a good share in the process of globalization of economy to our country, and promote it, we have to identify our potential advantages to gain better advantages in the stage of world trade. This survey studied the existence or non-existence of the Comparative Advantage of Iran and fourteen date exporting countries such as Tunisia, United Arab Emirates, Saudi Arabia, Pakistan, Palestine, Algeria, Iraq, Oman, Egypt, France, Mexico, United States of America, Netherlands and Germany which were the supreme date exporting countries of the world respectively from 1995(coincident with the beginning of WTO's activities) to 2007.Additionally, the trend of variations of date exporting comparative advantage, the place and competitive grade (comparative advantage) of these fifteen countries in1995–2007are studied.Thus, by using F.A.O. data, in this survey RSCA, χ2indexes have been estimated. The results showed that inspite of the favorable situation of Iran in world palm production, a fluctuation has been observed in RSCA during the period of the present study, and it was stabled only in the last few years of this period. Attention should be paid to this issue and fundamental actions should be undertaken.

Forecasting employment and unemployment figures for Iran can help depict labor market condition on horizon of vision plan. Using ARIMAmodel, the author has aimed to forecast the share of economic sectors, namely agriculture, industry and mines and service sector, in Iran’s employment over the period of 6009-6062. The findings of this paper indicate that over the past 20years (6723-6003) employment trends have not been uniform for these sectors, i.e., it has been decreasing for agriculture and increasing at a slow rate for industry and mines. For service sectors it has been constantly increasing.The findings further provide the ground to argue that this pattern of developments in employment would be maintained on the horizon of vision plan in 6101(6062).