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Manufacturing firms born like humans do and after some stages in their life, die in different ways. With this approach, death is inevitable and just can be delayed. One way to delay this event is having information about the factors influencing that. The purpose of this paper is to study the effects of some factors (like location, size and industrial group) in industrial firms' closure in Yazd province in the third development plan. Data used in this study is gathered from the Yazd Mining and Industry Department database. These are 1539 manufacturing firms that were started their work before 2000, the first year of the Third Development Plan. From these, 175 firms became closed during this period. To determine the effects of these factors, we use the probit regression technique. The results show that firm location (in or out of industrial zones) and firm size doesn't have any effect on closure probability. Moreover the closure probability of older firms is less than the younger counterparts.

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The present study was conducted to measure the level of job satisfaction among agricul-tural education teachers in Yazd Province of Iran. Agricultural education teachers from Yazd Province with a minimum of one year experience were included in the study. As a result so, the sample consisted of 60 agricultural education teachers. To study the job sat-isfaction level among respondents, the Brayfield and Rothe Job Satisfaction Index was used. A data form was used to collect information about demographic (independent) vari-ables and effective constraints reducing job satisfaction. The findings revealed that the majority of agricultural education teachers (56.7%) had a median level of job satisfaction, followed by 33.3 and 10 percent belonging to a low and high level of job satisfaction, re-spectively. According to regression analysis, "level of education", "number of students taught each year" and "class time (per day)" were found to have contributed to the in-crease in job satisfaction among agricultural education teachers. The effective constraints that had the most important impact on decreasing job satisfaction included an "absence of realistic expectations of teachers by society", "inadequate time for learning-by-doing programs" and an "inappropriate student-teacher ratio in class".

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Introduction:
In order to evaluate the socioeconomic development, various criteria are used to evaluate the livelihood, welfare, and social changes of human life. The economic progress is one of the important dimensions of development. The social dimension of development, which leads to the creation of justice for different members of a society, is another important aspect of development, and the realization of this goal requires planning. Land planning, which seeks to pay attention to regional potentials and differences, is a step in this direction. Ignoring these capabilities will lead to resources waste, intensifying regional dualities and negative consequences. For this purpose, the aim of the current research is to identify the key sectors of the economy of Yazd province based on the multi-regional input-output table. The innovation of the current research is to investigate all the economic activities of Yazd province and national economy and to identify the key parts of the two regions.

Methodology:
In the current research, we seek to identify and evaluate the key economic sectors of Yazd province and national economy using traditional methods, elasticity of final demand, data envelopment analysis (DEA) and finally a multi-ranked index using multi regional input-output table. In this article, the Central Bank's 2016 input-output table was used, which was the most up-to-date official statistical data table approved and available at the time of the research. Also, the regional input-output table of 2015 Yazd province and national economy has been extracted from the updated input output table of Central Bank and regional accounts of the same year by using specific Flegg location quotient (SFLQ) method. The input-output table of the Central Bank, according to the production and economic structure of the two regions, and using the ISIC classification method, has been aggregated into 20 sectors.

Results and Discussion:
The results of the present research show that in the traditional method, in total, the section "Manufacturing metal factory products except machinery and equipment" and three sections "Manufacturing paper and paper products and printing", "Manufacturing products from rubber and plastic" and "Manufacturing metals" "Basic" are respectively known as the key sectors of Yazd province and other national economies. In the final demand elasticity method of Yazd province, the sections "Manufacture of motor vehicles and other transportation equipment", "Manufacture of clothing, processing and dyeing of fur, tanning and polishing of leather and other leather products" and "Manufacture of unclassified machinery and equipment in Other" and for the rest of the national economy, the sectors "Manufacturing textiles", "Manufacturing basic metals" and "Manufacturing non-metallic mineral products" are ranked first to third. In the third method, known as data envelopment analysis method, in Yazd province, the "Manufacturing of motor vehicles and other transportation equipment" sector and in other national economies, the "Manufacturing of paper, paper products and printing" sector are known as key sectors.
In a general summary using a Multi Ranking Index (MRI), in Yazd province, "Textile manufacturing", "Clothing manufacturing, fur processing and dyeing, tanning and polishing of leather and other leather products", "Wood manufacturing and wooden products", "Coke manufacturing, Products from the refining of petroleum and nuclear fuels and the manufacture of chemical materials and products", "Manufacture of basic metals", "Manufacture of machinery and equipment not elsewhere classified", "Manufacture of motor vehicles and other transport equipment", "Manufacture of furniture and articles Not Elsewhere Classified", "Water, Electricity and Gas", "Construction", "Transportation" and at the level of other national economy sectors "Clothing manufacturing, processing and dyeing of fur, tanning and polishing of leather and other leather products" , "Making wood and wooden products", "Making paper, paper products and printing", "Making rubber and plastic products", "Making basic metals", "Manufacturing, repairing and installing subsidized, electronic and optical products, manufacturing, repairing and installation of electrical equipment”, “Manufacture of furniture and articles not elsewhere classified” are identified as key sectors.

Conclusion:
The findings of the present research indicate that the use of different criteria can show a different picture of the economic performance of the sectors. Using traditional methods, key sectors are industry-oriented. In the final demand elasticity method, the priority of the sectors is determined based on the importance of each sector, and in the data envelopment analysis method, the results are estimated based on the efficiency value of each sector. These results show the importance of paying attention to choose the right method in the evaluation of key sectors. Although the key sectors determined using different methods are different, the common point of all three methods is that the key sectors of Yazd province are industry-oriented. Therefore, according to the criteria used in the three methods, it can be seen that the province is well industrialized and the role of industry in the economic structure of the province is dominant.