درخت حوزه‌های تخصصی

Purpose- Employment and unemployment, which are very important issues in rural areas, can be solved in general through home-based businesses and their development. The issue of home-based businesses can be very influential in creating employment in rural areas The main purpose of this study is to provide a paradigmatic model of home business development in rural areas of Isfahan province based on basic theory. Design/Methodology/Approach- This study was conducted in 2020. The present research is among the basic and qualitative researches that have been done with the approach of the foundation data theory approach. The interview collection tool was structured. The interviews were conducted among experts and experts in the field of home-based jobs, and the opinions of the interviewees were theoretically saturated from the 29th interview. Findings - After the emergence of concepts (139 references) and open, central, and selective coding, led to the design of the conceptual framework of the research model and the presentation of the paradigm model. Based on the results of the Grounded Theory, the pattern of home-based businesses to achieve development in rural areas of Isfahan province has been drawn. This model includes causal conditions (including managerial factors and comprehensive policy system), intervening conditions (educational-promotional factors, motivational factors, and attitudinal factors), contextual conditions (infrastructure factors, marketing, skill factors, and promotion of financial and credit resources). This includes strategies (stakeholder participation, information system, and support factors) and social consequences (increasing the level of participation and sense of responsibility and cooperation among residents, reducing social harms, empowering local people, Reduce the migration of local people to the city, move towards sustainable development) and economic consequences (rural growth and development, reducing the dependence of local people on government credits and facilities and assistance such as subsidies, promoting economic welfare, improving local livelihoods) has it. Research limitations/implications- The limitations of the present study include the following: Research is time-consuming; some people are not cooperating to collect data, it is difficult to assess the relative importance of the components and factors of the proposed theory.

Air pollution in different cities of the world is a complex mixture of toxic components, including particulate matter (PM), mainly produced by combustion processes. A cross-sectional analytical study was conducted to investigate the relationship between air pollutants and mortality from cardiorespiratory diseases in Mashhad. To this end, the data on mortality from cardiorespiratory diseases in 2012-2013 were obtained from Razavi Khorasan Health Organization. The mean daily concentration of air pollutants, including carbon monoxide (CO), PM with a diameter of 10 micrometers or less (PM₁₀), and PM_2.5 was calculated. The results of data analysis showed that there was a relationship between PM₁₀ concentration and the rate of mortality from cardiovascular diseases in men. In addition, a significant relationship was observed between PM₁₀ concentration and the rate of mortality from respiratory diseases in both men and women. The results indicated that there was a significant relationship between PM_2.5 concentration and the rate of mortality from cardiorespiratory diseases in both men and women. There was also a significant relationship between CO concentration and the rate of mortality from respiratory diseases in women. The results demonstrated that PM_2.5 has the greatest effect on mortality from cardiorespiratory diseases. The study findings were reported within the context of environmental communication by using the media tools to raise public awareness of the adverse effects of pollutants.

today, with rapid advancement of industry and technology, many concerns about the adverse consequences threaten human life. The objective of this research is to investigate environmental education as an implement to reduce and evaluate the environmental consequences of petrochemical products based on the hierarchical analysis. The methodology was a survey of a statistical group involving 30 managers and experts in the petrochemical industry. The tool for the survey has consisted of a questionnaire with a pair scale-single response. In this model, the validity of the research was confirmed by the Delphi method and obtaining the opinion of experts in the field of occupational health and reliability of the questionnaire calculated by the inconsistency rate (less than 0.1). First, three criteria including environmental impact, destruction of the natural environment, impacts on individual health, and the most important harmful effects of each criterion were identified. Among the three main criteria, the most influential factor is the environmental impact criterion with a relative weight of 0.670. The criteria for the destruction of the natural environment and health effect of petrochemical workers with a relative weight of 0.260 and 0.699, respectively, are in the next priority. The water pollution parameter with a relative weight of 0.602 is the most important among the 5 sub-criteria. The parameter of effects on the biological environment with a relative weight of 0.373 among the 3 sub-criteria, and the parameter of the respiratory system with a relative weight of 0.417 among the 5 sub-criteria have the greatest effect, respectively