درخت حوزه‌های تخصصی

The purpose of this study is to design a strategic model for international marketing of Iranian handmade carpets - a combined approach. The present study, in terms of its basic applied purpose, in terms of nature, survey research and in terms of paradigm, combined-exploratory research, sampling in the qualitative part of the research was done purposefully and in the quantitative part was done by simple random sampling. In the qualitative stage with 12 experts, who were mainly academic experts in the field of international marketing and senior managers of companies exporting Iranian handmade carpets, the interviews continued until theoretical saturation was achieved, and the sample of the quantitative section consisted of 196 people selected according to the Cochran's formula and the research tool in the qualitative section has been identified using the exploratory method of strategic components of international marketing of Iranian handmade carpets and the factors affecting it and in a small part it was evaluated through descriptive-survey research. The sampling method in the qualitative part was purposeful and in the quantitative part was simple random. The research tool in the qualitative part of exploratory interview was semi-structured and in a small part, for the strategic evaluation of international marketing of Iranian handmade carpets, a researcher-made questionnaire was used, which was designed based on the themes obtained in the qualitative stage. In the qualitative part, the analysis of the interviews was performed using the content analysis method. The validity and reliability of the components were examined and Cronbach's alpha of all the above components was 0.7 and during it; the most important basic, organizing and comprehensive themes on the components of the factors affecting the international marketing strategy of Iranian handmade carpets were assessed. Quantitatively, through structural equation methods, the accuracy of the research model was confirmed and it turned out that the selection of concepts, dimensions and indicators had a high accuracy in the handmade carpet industry and it can provide a suitable framework for compiling a vision document for the handmade carpet industry.

Textiles as a forerunner in the industrialization of many current developed countries to the post-industrial stage has fundamental role. Due to the occurrence of many problems in the Iranian textile industry, this industry has faced many hardships. The objective of this article is to develop an evaluation model for sustainable technology in the textile industry. The present research method is applied, in terms of (quantitative-qualitative) mix method. The qualitative sector is consists of the statistical population of elite in the textile industry, which semi-structured interviews were carried out with 10 experts in the textile industry. Their ideas were refined in two stages using the Fuzzy Delphi method and according to the library studies and expert ideas, the evaluating components of technology were identified and a researcher-made questionnaire was developed in the Likert spectrum. Its validity was measured using confirmatory factor analysis and reliability with combined method. The quantitative sector is consist of the statistical population includes all engineers, managers and university professors of the textile industry, of which 200 people were randomly selected as the sample size. Based on the results of the qualitative and quantitative sectors, the technology evaluating model has been drawn including 10 dimensions of economic, cultural, environmental, marketing, legal, organizational, political, technical, managerial and marketing. Obstacles and influential factors in evaluating technology are stated here with their consequences.

The purpose of this research is to design a model for the development of optimization of gasoline production in the oil refinery. The research method is experimental, which uses nonlinear programming. The statistical population is the set of sections and pressures of steam, benzene, octane in four different time periods for the production of gasoline products in accordance with the standards of the National Petroleum Products Distribution Company. Version 24.1.2 resolved. The results of determining the amount of slices for mixing in two time periods, the amount of steam pressure, octane and benzene to produce the final gasoline product for each of the nine slices in each time period are shown.. An increase in the amount of benzene in the gasoline product than the standard level causes an increase in the amount of air pollution. On the other hand, reducing the octane number will increase the knocking of car engines and will lead to a decrease in engine efficiency. Exceeding the standard gasoline steam pressure reduces the volume of gasoline consumed by customers and as a result creates customer dissatisfaction.