درخت حوزه‌های تخصصی

Every year, approximately one-third of the total food produced for human consumption is lost or wasted due to various reasons. This level of wastage has substantial adverse impacts on the environment, economy, and society. Numerous studies have proposed various policies to address the issue of food waste, such as incorporating technology into existing supply chains. However, concerns about their effectiveness and unintended consequences have led researchers to emphasize market-based approaches for waste reduction. The present study was carried out to estimate waste and investigate the potential for developing different marketing channels as market-based approaches to reduce waste in the leafy vegetable supply chain in Kermanshah province. To achieve this purpose, a system dynamics modelling of the waste system in the leafy vegetable supply chain was developed by using the literature review and interviews with experts and stakeholders. The tool for collecting research data was a questionnaire. The statistical population of this study is two groups including 22 experts and 728 actors in the leafy vegetable supply chain. Based on the findings, around 31,000 tonnes (39%) of leafy vegetables are wasted annually across the supply chain. The research scenarios indicate that the establishment of processing industries will effectively decrease the overall waste of leafy vegetables from around 31,000 tons to approximately 20,000 tons annually. Therefore, government initiatives and policies in the field of leafy vegetable exchange in the study area must focus on supporting businesses associated with leafy vegetable processing industries and establishing infrastructure prerequisites for these industries.

Women entrepreneurs use virtual social networks in their professional relationships. These relationships with higher quality leads to better performance in their businesses. The present study aimed to analyze the effects of virtual social networks on improving rural women’s entrepreneurship. The statistical population of the study included all members of the Agricultural Development Specialized Holding Companies in Fars province in Iran. The study was conducted using survey and stratified random sampling methods with 269 individuals participated via questionnaires. The results indicated that virtual social networks had a favorable effect on rural women’s businesses. There was a significant difference between women in the different studied counties regarding the effects of virtual social networks on business. In addition, a significant difference was observed between women in various groups regarding the effect of virtual social networks on business. In addition, greater effect of virtual social networks on women’s businesses led to higher business resilience among the women entrepreneur and their businesses, which resulted in increasing the women’s information about business activities and their entrepreneurial activities in their businesses. Further, more use of social networks by the women led to more use of marketing methods and strategies. Therefore, it is suggested that Agricultural Development Specialized Holding Companies use the functions of virtual social networks in order to information transfer, networking and online training for members when necessary. Also provide the necessary training in the application of appropriate marketing methods and strategies to rural women entrepreneurs using these networks.

Considering the intermediary role of banks in the economy and their critical function in the propagation of economic shocks to the real sector, this study aims to investigate the role of bank capital in analyzing the relationship between banks' balance sheet characteristics and economic fluctuations using a Dynamic Stochastic General Equilibrium (DSGE) model. The results demonstrate that, in the model with a bank capital channel, positive shocks lead to more robust economic growth. This is attributed to the banks' ability to invest, enhancing the positive effects of shocks. Taking bank capital into account, variables such as consumption, and inflation exhibit better performance, with reduced fluctuations or quicker adjustments, leading to economic stability. Conversely, in an economic scenario without a bank capital channel, positive shocks have a lesser impact on economic variables. Consequently, the results can effectively inform decision-making regarding the necessity of adhering to bank capital adequacy ratios.

The purpose of this article is to simulate the behavior pattern of shareholders in the Iran’s capital market according to the monetary policies of the Central Bank of Iran. The research method in the first stage was qualitative (interview) and in the second part it was quantitative (statistical and inferential tests). According to the purpose of the research, the research method was of fundamental-applied type and based on the research method of survey type. The statistical population of the research consists of the shareholders of the Tehran Stock Exchange, whose number was about 650 stock companies until the end of the fiscal year 2023. Semi-structured interviews with experts of this market have been used to identify model indicators. Then, by coding the data obtained from the interviews, a research questionnaire was designed. Finally, to extract the model from the factor-based model (ABM) using the exploratory factor analysis method, Netlogo software was used for simulation. The investigated period can be divided into three periods without applying a targeted monetary policy to control the behavior of shareholders. The first period is the period when economic variables such as exchange rate, inflation rate and interest rate are constant. In this situation, the number of buyers in the capital market has increased and purchases have taken place in this market (in this purchase, the share of emotional buyers is higher). In the second period, when inflation decreases and the interest rate remains the same, the number of shareholders in the market is reduced, but purchases still occur, but the share of volatile buyers is higher in this period. In the third period, when the inflation rate and the interest rate both increase, with the greater effect of expansionary policies (increasing the volume of money) than the increase in the interest rate, the number of shareholders and the amount of purchases increase. The study of the behavior of shareholders and their buying and selling in this market indicates that the profit from the buying and selling of volatile shareholders in the period under review is more than that of emotional shareholders and shareholders who hold their shares for a while in order to gain profit with a long-term view. The results indicate that due to uncertainty, this market, which has the nature of long-term financing, has lost its function and the shareholders' view of this market is short-term profit.