majid shahriari

Dust is a disastrous weather problem that can cause serious environmental hazards and adverse consequences on agriculture, industry and people's daily life. The intensity of these winds is such that by creating the concentration of dust in the sky and the influx of quicksands on the surface of the earth, they deprive people of any activity and create disturbances in the general situation. To the extent that these strong winds today have covered the fields that were used as wheat storage for several millennia with sand dunes, and the drought has progressed to the extent that it has completely dried up an area of 4,000 square kilometers. Successive droughts caused the Hamon wetland to dry up and the bed of that spring became dusty. As a result of the 120-day winds of Sistan, fine dust particles spread for kilometers and create a basic problem for the residents of Sistan in Iran and parts of Afghanistan. The amount of water that enters the wetland through the Hirmand River every year, if it is spread on its bed, it can stabilize the soil particles to some extent and cause plants to grow in the Hamon bed, which is very effective in stabilizing the soil and preventing the spread of dust. However, the spread of floods in the Hamon bed is in conflict with the interests of some wetland beneficiaries such as nomads, fishermen, boatmen and farmers of the Hamon bed. Their interests will be secured if the small amount of water entered into the wetland is concentrated in some places and not spread over a wide area. for this reason The movement of quicksand caused by sandstorms in Sistan region irreparable damage to the economic life of cities and especially villages, including communication roads, agricultural fields, aqueducts and irrigation canals and houses. Therefore, the current research was conducted with the aim of estimating the economic losses of the effects of dust on the beneficiaries of the Hamon wetland.

The statistical population of this research is all the beneficiaries of the wetland (fishermen, boatmen, farmers of the wetland bed and nomads) and residents of Sistan region, of which 292 people were randomly selected. In this research, two library-documentary and field methods were used to collect information. To determine the model to measure the willingness to pay, it is assumed that the person accepts the proposed cost for the green and prosperous Hamon wetland based on maximizing his utility under conditions or rejects the proposed cost. The dual questionnaire form in cv survey has a dependent variable with a double choice, which requires a selective qualitative model. Usually, logit and probit models are used for qualitative selection methods, due to the abundant and common use of logit model in calculation, this model was used in this research. The average method of partial willingness to pay is better for calculating the amount of willingness to pay because this method preserves the stability and consistency of the limits with the theory, statistical efficiency and the ability to accumulate; Therefore, the average willingness to pay was used in this research. The parameters of the logit model are estimated using the maximum likelihood method, which is the only technique for estimating the logit model (Hanemann, 1984). Then, the expected value of the willingness to pay is calculated by numerical integration in the range of zero to the highest offer (A) in the form of the following equation. Research data was collected using designed questionnaires that were prepared separately for each department. Users were interviewed in person and in different parts of the lagoon. The willingness to pay method was used to calculate the average willingness to pay of Hamon lagoon users and it was used to calculate the expected value of willingness to pay by numerical integration in the range of zero to the maximum offer. Also, Excel software was used to analyze the variables and mathematical calculations, and SPSS software was used to estimate the parameters of the logit model.

The results of surveying the education level of the respondents showed that 28.1% of people had less than middle school literacy and 20.5% of them were illiterate. Examining the results of people's income status showed that 49.3 percent of users had monthly income between 1-3 million tomans, 26 percent of them had income less than 1 million tomans. The values of Cox and Nel and Nigel Kirk statistics are equal to 0.095 and 0.133, which means that six independent variables (gender, income, education, number of children and occupation) have been able to account for between 10 and 13 percent of the changes in the damage variable Explain the cause of dust. After estimating the parameters of the logit model using the maximum likelihood method, by means of numerical integration in the range of zero to the maximum damage amount (15000000 Rials), the expected value of WTP was calculated, and the average dust damage to the users was 11237600 Rials per year. According to the total population of users (11172 people) of Hamon lagoon, the total value of dust damage to users is 125546467200 rials per year. The average amount of users' willingness to pay is 286,950 rials per year. Considering the total population of users and tourists of Hamon Wetland, the total value of the proposed amount for the restoration of Hamon Wetland is 45,354,350,800 Rials per year, which can be used to preserve and restore natural resources or to invest in the direct values of the wetland in terms of tourism, etc. .

Since the recent droughts in the Sistan region have endangered the life of the Hamoun wetland and led to the employment of a large part of the residents of rural areas who used to earn a living in this way, it is necessary to develop effective strategies for the establishment of non-agricultural industries in order to create employment. We are the residents of the region that if this is not fulfilled, we will witness the depopulation of a huge part of the rural and border areas in the Sistan region.

Determining the relative advantage of agricultural products in different regions is one of the important dimensions of agricultural policy and planning, based on which the appropriate pattern of production and cultivation can be achieved in different regions according to the conditions in each region. The current research aims to prioritize the provinces that produce medicinal plants in the country based on the indicators of the physical advantage of production (advantage of scale, efficiency advantage and collective advantage) and their fluctuation coefficient during the period of 2011-2018 using the numerical taxonomy method. The results showed that during a period of 18 years, South Khorasan, Jiroft and Razavi Khorasan provinces had the highest average scale advantage index (SAI) and the highest average efficiency advantage (EAI) was also in Alborz, West Azarbaijan and Lorestan provinces with 13/67 respectively. , 6/47 and 6/19 were obtained. According to the results of collective advantage (AAI), the provinces of Hamadan, Semnan and Sistan and Baluchistan have the lowest fluctuation coefficient of collective index with 0.26, 0.28 and 0.33 and the provinces of Alborz, Jiroft and Sistan and Baluchistan with 31.40 respectively. 2.3 and 1.65 had the highest average collective advantage among all the provinces of the country. Finally, in order to summarize, using GIS software, a comprehensivemap of the country for medicinal plants was drawn based on the indicators of physical advantage.

Determining the relative advantage of producing agricultural products in different regions is one of the important aspects of agricultural policy and planning, based on which an appropriate pattern of production and cultivation can be achieved in different regions according to the existing conditions in each region. The present study aimed to prioritize the sugar beet producing provinces in the country based on the indices of physical advantage of production and their fluctuation coefficient within the period of 1983-2019 using numerical taxonomy method. Results showed that during a period of 36 years, the provinces of South Khorasan, Khorasan Razavi and West Azerbaijan had the highest average of scale advantage index (SAI), and the highest average of efficiency advantage index (EAI) was achieved in the provinces of Kurdistan, Kermanshah and Ardabil as 2.90, 2.20, and 1.80, respectively. Based on the results of collective advantage (AAI), the provinces of West Azerbaijan, Khorasan Razavi and Isfahan with 0.10, 0.22 and 0.33 had the lowest coefficient of fluctuation of the collective index and with 1.93, 14.14 and 1.74, respectively had the highest average of collective advantage among all the provinces of the country.

Water as one of the sources of life is one of the most important factors of growth and development in human societies. In the last two decades, especially in the late 20th century, water management has become a major international concern. Drought and dehydration in Iran are also a climatic fact, and due to the growing need for different parts of the water, the drought problem will become more acute in the coming years. Water productivity is one of the most important key indicators in large-scale planning related to the supply, allocation and consumption of water. The purpose of this study was to investigate the changes in water productivity in industrial and agricultural sectors by country's provinces during the implementation of subsidy targeting using Malmquist index. The results indicated that the provinces of Tehran, Kerman and Hormozgan have been inefficient in all three sectors, but overall, the total productivity index has increased in the country.

Public attention has been growingly given to healthy food products. Development of organic farming and enhancement of consuming such products in society require attending to consumers’ orientations and tendencies. Regarding this, the aim of the present study was to evaluate the viewpoints of experts and consumers about organic livestock products in Sistan and Baluchistan province, Iran.  For the purpose of the study, first, an open-ended question regarding the barriers to the expansion of organic livestock products was sent to the experts (n=33) through Delphi technique. After extracting the main indices from the experts’ responses, a questionnaire, consisting of 13 items, was designed to evaluate the consumers’ viewpoints (n=516) about the barriers to developing organic livestock products in Sistan and Baluchistan province.  From the experts’ points of view, the main factors accounting for the restriction of the extension and promotion of animal organic products consumption included the lack of consumer s’ confidence about organic products, consumers’ unawareness of the benefits of organic animal products, and inability to purchase the organic livestock products due to economic weakness. Moreover, the consumers reported the inefficient organic animal production technology, lack of appropriate conditions for organic animal production, and shortage and limitation of supplying organic livestock products in the market as the most important barriers to developing and promoting the organic animal products.  Enhancement of people’s acceptance of the novel products and approximation of the experts and consumers’ viewpoints could have a key role in the expansion of organic animal product consumption in Sistan and Baluchistan province.

Since the uncertainty in venture capital structure, there are so many challenges with banks and financial institute's decisions about their portfolio. According to literature, the most important challenges in this area are business management, supervision on facility expenditure and appropriate Islamic contract. It is clear that the proposing a new approach for venture decisions needs to consider these challenges in an acceptable method. This paper at first tries to specify the Iranian bank challenges in venture capital decisions and then introduces a novel comprehensive model to cover them. Finally the results of using this model in financial institutes are outlined at the end of the paper.

Venture capital is an interesting area in banks financial decisions and because of its uncertainty, brings lots of challenges. Despite the increasing tendency for banks in this kind of investments, there is not any certain method to analyze the risk and return of ventures; thus it is neccessary to develop an effective research in this area. Recently, development of the studies about ventures, has facilated conditions for investors and increase the proportion of venture capital in commercial banks portfolio. This paper as a novel study, at first, consider the literature review of financing VC projects and their instruments, and then try to find the usablity of these methods in Iranian commercial banks in a comparative approach.