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One of the basic functions of input-output analysis is to identify the economic structure of regions and countries. This research seeks to identify the key sectors of Iran's provinces and to compare them with national key sectors. The data is extracted from the national input-output table and regional accounts of the Statistical Center of Iran in 2011. The results show that based on the "total gross backward and forward linkages" criterion, there are 17 and 20 key sectors, respectively, with and without considering the "dispersion of the linkages", at national level. With same criterion, every province has at least one and two key sectors, respectively. However, some key sectors of provinces are not listed as national key sectors, and are not included in the central planning. On the contrary, a number of national key sectors are not categorized as key sectors in the provincial level. In addition, due to the larger usage of national resources in key sectors, the provinces with more common key sectors with national economy have higher GDP per capita. Thus, it seems due to inconsistency between some regional economic structure with national one, considering the provincial key sectors in national economic planning leads to optimal use of national resources through increasing the GDP per capita and decreasing the interregional disparities.

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To prevent gasoline smuggling to abroad and its excessive consumption in the country, the price of gasoline increased and gasoline was quoted in 2019. This policy has affected the consumption expenditures of different income groups of households. To compensate the expenditures increment, the government pays subsidies to some income groups of households. This paper investigates the effects of this policy on the consumption expenditures of different income deciles in urban and rural areas and compares them with gasoline subsidies. To this end, a developed version of implicit subsidy elimination model is employed. The input-output table of Iran for the year 2016 is used as database of the research. The results of the research indicate that the subsidy of the government will cover the consumption expenditure increment due to its gasoline price policy for all target income groups. However, this policy fails to compensate the increment of the consumption expenditure in the case in which the labour force and capital owners adjust their endowments and the exchange rate is changed with respect to domestic price inflation. 

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Aim and Introduction
In the conventional Input-Output model, all final demand components including household consumption, government expenditures, capital accumulation and exports are considered as exogenous variables. The basic limitation of the open Input-Output model is ignorance the relationship between the production sector and the household. In this way, if there is an increase in demand for the products of some industries, such an event will directly lead to an increase in the production level of these industries in the first place. On the other hand, the increase in production in turn leads to an increase in the level of production in related industries through previous connections. The increase in income resulting from higher levels of household economic activities leads to an increase in household consumption and as a result stimulates more activities in the production sector. Based on this, the production sector and the households are related to each other through the income-consumption relationship.In order to estimate the income-consumption relationship, household consumption should be included as an endogenous variable in the Input-Output model, while in the conventional (open) Input-Output model, household consumption is considered as an exogenous variable. To solve this limitation, Miyazawa (1976) presented a new Input-Output model in which he considered household consumption as an endogenous variable. Miyazawa's model is known in the relevant literature as a semi-closed Input-Output model with endogenous consumption. Despite this, Miyazawa's model, similar to Keynes' consumption theory, considers household consumption solely as a function of current income, while according to other theories of consumption behavior, household consumption depends on other factors such as past consumption levels and income. It also depends on the expectation. Accordingly, in this research, the semi-closed Input-Output model with semi-endogenous consumption, introduced by Chen et al (2016), was used because this new model adapts the Input-Output model to other consumption theories and corrects the failure of the previous model. In this framework, household consumption is divided into two endogenous and exogenous parts, so that the endogenous component is influenced by current income and the exogenous component is influenced by other factors affecting consumption. In fact, it is only endogenous consumption that enters the mediation matrix.
Methodology
In this research, the results of the new semi-closed Input-Output model with semi-endogenous consumption (Chen et al (2016) model) and the semi-closed Input-Output model with completely endogenous consumption (Miyazawa (1976) model) were compared. In this regard, first, endogenous consumption coefficients for 12 product groups were estimated using the Kalman filter model, and then, the estimated endogenous consumption coefficient of each category of goods was compared to the endogenous consumption coefficient of the data sections by means of the interface matrix. The receipt was converted.
In order to compare the performance of the two models of Miyazawa (1976) and the model of Chen et al (2016), the effect of government capital formation on the value added of different sectors was evaluated using the two mentioned models.
Findings
Failure to consider other factors affecting consumption will lead to upward deviation in GDP estimation. In this way, it can be concluded that the semi-endogenous model solves the insufficiency of the completely endogenous model and its results are closer to reality.
Discussion and Conclusion

the gross domestic product was obtained based on fully endogenous and semi-endogenous models (9601201) and (9329172), respectively. These findings show that Miyazawa model considers all household consumption as a function of current income, and also due to the lack of consideration of other factors affecting consumption such as expected income, consumption level. Also, in Chen et al.'s model, the calculated added value is smaller compared to Miyazawa's model, because by analyzing and separating exogenous consumption from total consumption, only endogenous consumption entered the table of intermediary exchanges.
 

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The first constitution written in Iran consisted of the "Nezam Nameh Asasi" and its supplement, drafted following the Constitutional Movement's victory, called "Mashruteh" in 1906 and 1907. This document, which marked a turning point in the constitutionalism movement in Iran, was influenced by the constitutions of countries such as Belgium, France, Bulgaria, Germany, and the Ottoman Empire. In this regard, the authors in another text have examined the extent and manner of this emulation.
This article analyzes constitutional laws using a comparative approach, examining their patterns and comparing them to the "Mashruteh" constitution. The model laws are evaluated using two criteria: rights and freedoms, and public powers. Then, the "Mashruteh" constitution's position regarding these laws is analyzed through a comparative study. As a result of this research, it becomes clear that the Iranian law, in the classification of types of constitutional laws, is placed in the category of semi-authoritarian laws similar to its model laws and among them, with a greater inclination towards democratic Regulations, follows countries such as Belgium and Bulgaria. Meanwhile, the influence of the specific conditions of Iran during the Qajar era and the necessity of paying attention to religious and Islamic issues have created many unique examples in this constitution that distinguish it from all of its models.