List of Articles C70

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  1 - Evaluation of changes in nitrogen, zinc and potassium sources on growth factors and physiological of Maize (Zea mays L.) Cultivar SC704
  tahereh tavan Mohammadali Rezaei mehrali mahmod janlou
  10.30495/iper.2021.1938805.1722
  In order to evaluate the changes obtained from nitrogen, zinc and potassium sources on the morphophysiology of hybrid Maize SC704 experimental in the form of complete randomized block design in four replications was conducted in spring and summer of 2018 in Golestan pro More

  In order to evaluate the changes obtained from nitrogen, zinc and potassium sources on the morphophysiology of hybrid Maize SC704 experimental in the form of complete randomized block design in four replications was conducted in spring and summer of 2018 in Golestan province in an area located in Mazraeh Katoul. The treatment included nitrogen fertilizer, potassium, zinc alone, nitrogen + potassium, nitrogen + zinc, zinc + potassium, combined use of nitrogen + potassium + zinc, versus control. The results of analysis of variance showed that the treatments on grain yield, plant dry weight, corn length, chlorophyll a, chlorophyll b, total chlorophyll, silk soluble sugars and silk protein were significant at a probability level of one percent. Application of these fertilizers increased corn length, plant dry weight and grain yield, as well as increased sugars and silk protein of corn and photosynthetic pigments of corn and the highest content of photosynthetic pigments was observed in the treatment of application of potassium fertilizer alone and combined application of fertilizers (Zn + K+ N). Manuscript profile
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  2 - Pricing Model of National Gas Exports via Pipeline on the Base of Game Theory
  Ali Akbar Naji Meidani Gholam Ali Rahimi
  One of the most important issues in the field of natural gas export via pipeline is the lack of pricing strategy, and providing an optimum pricing mechanism has always been one of the biggest challenges for gas export contracts. In this paper a pricing mechanism based o More

  One of the most important issues in the field of natural gas export via pipeline is the lack of pricing strategy, and providing an optimum pricing mechanism has always been one of the biggest challenges for gas export contracts. In this paper a pricing mechanism based on Game theory provided. The pricing mechanism has been developed based on cooperation among producing countries, consumers and gas transmitters that in the case of gas-exporting countries' commitment to it, the interests of these countries will be supplied. So, taking into account the realities of the market and according to the conditions of transmitter country, different scenarios have been compiled and according to it, the modeling is accomplished. The results of the different models in determining price, quantity and optimum tariff for two cooperative and non-cooperative games is that the interest of member countries in cooperative game is far greater than non-cooperative game. Manuscript profile
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  3 - Analysis of the Evolutionary Game Theory among Iran & Saudi Arabia in the Context of Genetic Algorithm
  samaneh khatami alireza shakibaee
  Evolutionary game theory has been known as the most suitable tool for modeling the dynamics of strategic interactions. In this regard, evolutionary algorithms present the new approach for learning and decision modeling of bounded rationality factors. The objective of th More

  Evolutionary game theory has been known as the most suitable tool for modeling the dynamics of strategic interactions. In this regard, evolutionary algorithms present the new approach for learning and decision modeling of bounded rationality factors. The objective of this study is providing the new model of searching for optimal strategies in iterated prisoner's dilemma (IPD) using genetic algorithm. For this purpose, by simulating competition between Iran and Saudi Arabia in OPEC oil Coalition, we used 12 strategy types over 20 runs of genetic algorithm for maximizing individual’s scores and also minimizing competitor fitness scores. Results show that “Tit for Tat” with the highest average fitness in both competitions known as the optimal strategy. The other strategis like; Soft Majority, Trigger & TF2T are next in ranking. The strategy “All D” is known as inefficient strategy in competition with the lowest productivity. Manuscript profile
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  4 - The Interaction of the Government and Central Bank Behavior in a Leader-Follower Game despite of the Risk Premium
  داود محمودی نیا اطهره زیدآبادی
  Coordination of monetary and fiscal policies is crucial for achieving economic growth in the context of price stability. Therefore, the monetary and fiscal authorities must have the necessary coordination and coordination in implementing their policies in order to achie More

  Coordination of monetary and fiscal policies is crucial for achieving economic growth in the context of price stability. Therefore, the monetary and fiscal authorities must have the necessary coordination and coordination in implementing their policies in order to achieve better results. On the other hand, the game theory is one of the concepts that has many applications in different sciences and fields. Game theory is of particular importance in economics, since it analyzes the interaction of individuals and their decisions. Thus, in the present study, the coordination of monetary and fiscal policies in the long run and its effect on macroeconomic variables are investigated according to a mathematical model. Accordingly, the interaction of monetary and fiscal policies are taken into consideration in the form of differential games with respect to the risk premium. On the other hand, the method of solving the game by Stackelberg game and the mathematical method is to solve the method of optimal control of Pontryagin's principle. In this regard, the results show that the interaction of monetary and fiscal authorities in the fiscal leadership creates better consequences in the society than the monetary leadership so that the fiscal leadership will decreases the government debts further and brings the debts closer to their desired level. On the other hand, if the policy makers consider the longer-term horizons for applying their policies and lead to the reduced risk premium, reduced target budget deficit and the real interest rates by proper policy-making, they can reduce the level of government debt and thereby the society will be in a better situation. Manuscript profile
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  5 - Study the Effect of Interval Irrigation and Nitrogen Fertilizer on Yield and Yield Components of Maize (Case study; Golestan Province)
  Yaser kordkatooli حسین عجم نوروزی Ebrahim Amiri Afshin  Soltani Mohamad Reza  Dadashi
  In order to investigate irrigation management and the effects of different amounts of nitrogen fertilizer on hybrid corn SC704 experimental in the form of crushed plots in the form of complete randomized block design in three replications during two crop years 2015 and More

  In order to investigate irrigation management and the effects of different amounts of nitrogen fertilizer on hybrid corn SC704 experimental in the form of crushed plots in the form of complete randomized block design in three replications during two crop years 2015 and 2016 in Golestan province, in Katul was done. The main factor of irrigation cycle by day in four levels including 7, 14, 21 and 28 days and the secondary factor of nitrogen fertilizer in four levels included 60, 120, 180 and 240 kg.ha-1. The results of analysis of variance showed a significant effect between irrigation cycle and nitrogen on Weigh of 1000 grains, grain yield, seed nitrogen and biomass yield. The results showed that 28 days of irrigation reduced grain yield, seed nitrogen, seed phosphate and seed potassium compared to 7 to 14 days of irrigation. The increase in nitrogen fertilizer to 180 and 240 kg.ha-1 increased the yield of the grain by affecting the biological yield and yield components seed nitrogen, seed phosphate and seed potassium. However, nitrogen consumption in higher amounts under stress conditions (21 to 28 day Interval Irrigation) not only did not have a positive effect on yield, but also reduced grain yield by 180 to 240 kg.ha-1. The highest grain yield was obtained in the combination of 7 and 14 day irrigation treatment and nitrogen level of 240 to 180 kg.ha-1 and 12209, 11416, 10147 kg.ha-1. The results of the average comparison between the two years showed that the highest number of grains per corn was 583, the Number of grains per row as 40.3 and the Weigh of 1000 grains was 138.9 grams and seed nitrogen 3.991 µg.g-1 DW in the second year. Manuscript profile