List of Articles supply and demand

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - Modeling the Spatial Characteristics of City Parks Based on Geographically Weighted Regression (GWR) Analysis Using Coefficients of General Performance of Park (GPP) and Area of Supply and Demand (ASD) (Case Study: First Region of Tehran)
  Seyed Hadi ghoddusifar Amir Mohammad Salehabadi Ali Mohammadpor
  10.30495/ijaud.2023.22567
  Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - Assessment Bio Capacity and Ecological Footprint of Urban Ecosystems (Case study: Hamedan)
  Parisa Farhadi Alireza Eldermi Mirmihardad Migranir
  10.30495/jest.2021.35500.4243
  Background and Purpose: Knowledge of the ecological conditions prevailing in the region is essential to achieve sustainable development and reduce the increasing degradation of natural resources and the environment. The ecological footprint index is of great interest as More

  Background and Purpose: Knowledge of the ecological conditions prevailing in the region is essential to achieve sustainable development and reduce the increasing degradation of natural resources and the environment. The ecological footprint index is of great interest as a way to measure levels of sustainability. In this study, using the ecological footprint index of Hamedan urban ecosystem in 2014, it was studied. Material and Methods: In this study, ecological traces of consumption in two parts of consumption and production of the city were evaluated. The ecological footprint of the consumption sector was estimated in each of the four urban areas and using SPSS software, a significant difference between the areas, was determined. Results: The results showed that per capita ecological footprints in the consumption sector, including housing, transportation services, goods and food, were 0.13 globalhectares. The most significant ecological footprints in this section was of transportation with 3980.499 (gh) and the least important Foot print in this regard was food with 3864.6 global hectare; therefore, the urban living capacity was determined 0.59 globl hectare. Conclusion: The results indicate that the ecological footprint of the consumption sector does not create the unsustainability of the urban ecosystem and, by creating an ecological surplus in this part, the city of Hamedan is introduced as a creditor of ecology. Which indicates in this sector that the demand is lower than the supply. Besides, there is no significant difference between the ecological effects of consumption in four urban areas. It was also concluded that there was an ecological deficiency in production sector which indicates of ecosystem bioaccumulation consumption and it could disturb the ecological stability of the ecosystem. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - Economic Modeling of Agricultural Water Resource Management in Tehran Province with Emphasis on the Role of Water Market
  Abolfazl Mahmoudi Abozar Parhizkari
  In present study the formation effects of local and regional water markets in Tehran province were investigated and the potential of water transfer under water scarcity conditions in this province were analyzed. For this purpose, an economic modeling including positive More

  In present study the formation effects of local and regional water markets in Tehran province were investigated and the potential of water transfer under water scarcity conditions in this province were analyzed. For this purpose, an economic modeling including positive mathematical programming (PMP) model and state wide agricultural production (SWAP) functions were used. The results showed that with establishment of the local and regional water markets in Tehran province; in addition to creation the balance between supply and demand of irrigation water and equilibrate the water trading between the studied regions, total irrigated lands 7/41% and total farmers’ gross profit 9/27% are increased. Finally, due to the supportive and constructive role of local and regional water markets, providing the required grounds to establishment and optimal use of this type of mechanism in Tehran province and other regions of the country where have shared water resources are suggested. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  4 - Cross-Border Gas Pipelines and Energy Security of Islamic Republic Of Iran
  Hojjat Salimi
  Abstract: Nowadays   the security of energy is one of the most important dimensions of national security and focus of attention of all states. Iran for the reason of having rich natural gas resources and special geopolitical location has great potential in int More

  Abstract: Nowadays   the security of energy is one of the most important dimensions of national security and focus of attention of all states. Iran for the reason of having rich natural gas resources and special geopolitical location has great potential in international gas trade through pipeline. The purpose of the present paper is to explain the challenges that Iran is facing for providing security of energy through cross border pipelines. The basic point is what are the most important challenges which Iran is facing in natural gas trade through cross border pipelines and what are the solution for managing these challenges? The descriptive-analytical examination of the issue shows that Iran is facing challenges in three sectors. These challenges are the security of supply, demand and transit, but the most important among these three is the security of demand. In the direction of maintaining demand and diversification of it, the suitable solution is the increase in attraction of foreign investment and transfer of technical know-how, readiness to increase supply in emergency situation when the demand suddenly increases and subsiding the international disputes in supply of natural gas. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  5 - Estimating the Export Supply Function of Flowers Case Study: The Dutch Rose of Fars Province in the Region of Persian Gulf
  Seyed Nematollah Mousavi
  The main purpose of this study was to determine the factors affecting the export of flowers in Iran. After data collection using by the index of Revealed Comparative Advantage (RCA), the condition of business of flowers in Iran was compared with a number of countries ex More

  The main purpose of this study was to determine the factors affecting the export of flowers in Iran. After data collection using by the index of Revealed Comparative Advantage (RCA), the condition of business of flowers in Iran was compared with a number of countries exporting the product. According to the results of study, the small elasticity of the exportation price in the function of export demand is negative and smaller than one, and it indicates that flowers are inelastic goods; moreover, the income from its export could be increased by in-creasing the price. It can be concluded that the domestic price increase will lead to a decrease in exports due to the high elasticity and negative of export supply in comparison with the domestic price. Partial elasticity obtained for the variable of the value of domestic production of flowers in the export supply function in this study indicates that uncontrolled increase production by increasing the acreage under cultivation makes the decrease of exportation price of flowers, and at the most it causes reducing of exportation income because of higher effect of low price in comparison with the effect of an increase in demand; thus, the income from the export of flowers can be increased by controlling the production and the value of export. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  6 - Socio-Economic Determinants of Supply and Demand for Convenience Foods (Okpa, Moimoi and Meat Pie) in Lafia Urban of Nasarawa State, Nigeria
  E.G. Onuk C.N. Shailong B.A Beshi E.A. Adgidzi
  The study specifically described the socio-economic status of the people involved in the production, distribution and consumption of convenience foods in Lafia urban of Nasarawa State. It identified the factors that influence the entry into convenience food enterprise, More

  The study specifically described the socio-economic status of the people involved in the production, distribution and consumption of convenience foods in Lafia urban of Nasarawa State. It identified the factors that influence the entry into convenience food enterprise, factors necessitating the demand and supply of the products and examined the costs and returns of three convenience foods. The data collected were analyzed using descriptive statistics, inferential statistics (multiple regression analysis), the four point’s likert type scale and the enterprise gross margin. The major findings indicated that female producers of convenience foods were more than male producers, the multiple regression result on the effects of socio-economic characteristics of consumers on the amount of money spent on consumer foods revealed that R value is 0.697. This implied that 69.7% of the total variation in output (Y) is explained by the combined influences of the independent variables in the model. The gross margin enterprise revealed that the sale of convenience foods in Lafia metropolis is profitable. The study concluded by advocating for provision of credit facilities amongst others to producers and distributors of convenience foods with limited income. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  7 - An Evaluation of Welfare Effects of Mechanization Policy in Sugar Beet Industry Production of Iran
  رضا رحیمی سعید یزدانی امیر محمدی نژاد
      Abstract Mechanization to overcome technical limitations and time constraints of climate on the one hand, it is possible to increase agricultural production. The sugar beet is one of the industrial products, which plays an important role in meeting the More

      Abstract Mechanization to overcome technical limitations and time constraints of climate on the one hand, it is possible to increase agricultural production. The sugar beet is one of the industrial products, which plays an important role in meeting the needs of the domestic sugar. In this study, to investigate the welfare effects of mechanization policy beet, sugar beet supply and demand functions using seemingly unrelated equations approach and is estimated using panel data. The results showed that the degree of mechanization has been increased from 1370 to 1390. In the implementation of this policy Producers gain more Welfare than consumers. Therefore, according to the development of mechanization would stimulate backward and forward linkages to other economic sectors will lead to greater accuracy policymakers.   Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  8 - A Simulation Study on Impact of Climate Factors on Production and Requirements of Rice in Bangladesh
  Md.AbuBakr Siddique Jun Furuya Shinataro Kobayashi M Abdus Salam
  Manuscript profile