In this paper, financial services in the Iranian as a sector with a leontief production function, This sector buys inputs from other sectors for its productions and provides services to expedite the cash fellows and risk transformation to other sectors, The first relations are called backward LINKAGE and the later relations are called FORWARD LINKAGE, for quantification of the LINKAGE, employment and output elasticity of input-output table, The FORWARD index of value added and backward LINKAGE of final demand are used, Furthermore, direct and indirect effects of a hypothetical extraction of this sector on output and employment are countable, The results of research indicated that, by selection leontief method, if the backward and FORWARD LINKAGE effects of financial services sector are eliminate, decrease of employment will be 215, 814 person, whereas, by selection Gosh method, decrease of employment will be estimated 687, 037 person.

In this article, it has been tried to investigate and analyze enterprise input_output model, the relationship between the main products of Khuzestan Steel Company with the internal departments of this company and also with the national economy on both the supply and demand sides and in the form of Backward and FORWARD LINKAGE for the year 1400 by using the enterprise data model. Therefore, by compiling the enterprise input_output table of Khuzestan Steel Company, the production multiplier and the backward and FORWARD LINKAGEs of the four products of slabs, billets and blooms, Pelletizing and sponge iron were calculated in the company and the national economy.The results of this research show that backward and FORWARD LINKAGE of Khuzestan Steel Company with the national economy is 3.21 and 1.41 units, respectively. Among the company's production activities, the highest link was related to the pelletizing product with 1.0 units and , the lowest link was related to the slab product with 0.55 units. pelletizing and sponge iron have the highest and lowest previous LINKAGEs (0.02 and 0.78 units) with the national economy, respectively. At the national level, rebar receives a large share of its demand from the products of the Khuzestan Steel Company, and ironstone is considered the most important consumable of these 4 products of the company.

The study of the effect of transportation price on the price index of economic sectors and the place of transportation according to the FORWARD LINKAGE, backward LINKAGE, Power of Dispersion Index and Dispersion Sensitivity are considered as an important topic. In this way, this paper first examines the place of transportation in the Iranian economy and then examines the direct effects of increasing the price of transportation on the price of different economic sectors. To do this, using the Input-Output analysis and table 2011 of the Statistical Center of Iran. First, the symmetric table is calculated for the constant price and then merged under the various economic sectors and the input-output table is considered as 25 sectors. According to the results of this study, the highest impact of an increase 20%, 30% and 40% in transportation prices on commerce and hotel, petroleum products, chemical products, and mineral industries, agriculture and animal product price index.

In this paper by using the last input-output table in Iran (2001) that has aggregated to 4 sectors, importance of agriculture sector surveys among other sectors. For this reason it is used MVA method, backward and FORWARD LINKAGEs and input – output elasticity. The results indicate to eliminate industry sector, agriculture's output decrease 8.69% and by elimination agriculture sector, industry’s output decrease 8.93%. Hence there is a reciprocal relation between these two sectors, and agriculture and industry sectors don’t growth alone. By using FORWARD LINKAGE agriculture is key sector and by using backward LINKAGE this sector is in the second rank. Furthermore in (1988-2001) period LINKAGE between industry and oil sectors to agriculture has increased and depending to 3 other sectors has decreased.

Road Transportation is one of the most important economic sectors whose services are used as intermediate and final goods. The increase in the price of this sector, in addition to the impact it has on the dimensions of participation in travel decisions, including destination selection, travel time, method of transportation and traffic management, it also affects the prices of different economic sectors that has not been studied in previous studies. The purpose of this study is to fill this research gap that in addition to examining the position of transportation among economic sectors in Iran and calculating the total effects, direct effects and indirect effects of a 20% increase in road transport prices on the prices of different sectors and Changes in the price index of economic sectors. The method used in this research is input-output technique and all economic sectors of Iran in the input-output table of 1390, which includes 99 parts, in this research has been merged into 29 economic sectors. The results of the study show that road transportation rank is fifth among 29 economic sectors in terms of FORWARD LINKAGE. The highest impact of the 20% increase in road transport prices on changes in the price index of food industry sectors with 47. 75%, trade and hotel management with 44. 26%, agriculture, horticulture, agricultural services, animal husbandry and forestry with 17. 42%, petroleum products, Chemical products, non-metallic mineral industries with 15. 05% and housing with 10. 07%.

Background and purpose: Muscle spindle is responsible for the control of skeletal muscle fibers function at rest and movement cycle, and is known as servo agent for voluntary movement. Function of this kinetic neceptor is completely dependent on the γ- ring activity would bring activity of la fiber and group II spindle muscle afferent. Also, there is close functional of muscle relationship between α and γ motor fibers which are important in the regulation of redial fiber function. Aim of this research was to study the activity of γ-ring more accurately in one or two consecutive cord segments, and also determine the α-motor fiber activity considering α- γ -LINKAGE. Because more understanding of physiological mechanisms of γ-ring, and knowing the mode (mannar) of their environmental control, may be a way of underslanding the reason of peripheral factors involved in the onset of involuntary and distonic disorders, so, to be able to help more these group of patients. Materials and Methods: In this study, fifteen normal male. Sprague-Dawely rats with mean weight of 500 mg were selected. And urethane as an an aesthesia (30g/100ml) with dosage of 170 mg/100g body weight of rat was injected intraperoninally. For the study of the nerve fibers, laminctomy was done at the humbosacral regeon and surgery was performed at the first half regon of the tail. Results: Activity of γ-moto-neurons at on one cord segment due to external ear mechanical stimulation coused, the activity of γ-ring on one or two sequential cord segments, Ipselaterally, In a way that, increasing deporalization in la (such) fibers and skeletal of group II afferent fiber on coudal regeon was followed by increasing activity of one or more than one γ fiber. Also, la fibers always have more activity on the activity of homonymous moto neurons, comparing with group II afferent fibers, while the activity of group III afferent fibers, due to stimulation of caudal skin. Did not couse the activity of this group γ-moto neurons. Considering the function of potential range of α-γ-LINKAGE in motor α-fibers (in) during deep anaesthesia, was at the basal rhythem. Conclusion: Duo to external ear mechanical stimulation homonymous moto neurons on one or two sequential segments of cord, caused the more activity of la fiber Ipsilaterally, comparing with with the group II afferents in one or more than one skeletal spindle. But group III afferent fibers activated by caudal skin stimulation, did had no stimulation on homonymous moto neurons. Also, considering the α-γ-LINKAGE no activity was observed on motor fibers.

Location quotient is a non-statistical method which brakes technical coefficient and uses some especial treatment to adjust them for regional studies. This method has evolved during the time and its latest version is known as augmented AFLQ based on specialty sector. This article attempts to challenge this method by using the data of Tehran Province (2007) as a case study underlining the crucial cracks in it. This crucial crack is inability in truly adjusting backward LINKAGE of the demand of weak sectors which make regionally weak sectors wrongly being considered as the key sectors of the demand side. At last, a method will be presented much more accurate in converting national table to regional table in which this crucial crack has been resolved.