The internal network consists of communication substructures, governmental and nongovernmental developed data centers and software substructures that have been expanded across the nation. This network provides the required capacity for "maintenance and exchange of local information in the nation for electronic services development" and "access of internet" through nationwide bandwidth connecting bed for home users, businesses and executive administrations. This network integrates specialized, local and national networks in the country, consisting of two private and public sectors. The private sector is to connect and to exchange information and services between the executive administrations and private sector, providing the required services for general users. These two sectors join each other at such points as data centers. The problem of this research is the fact that since many national administrations have a number of access points and that all administrations must join this network within the next five years, and that identifying information technology indices such as existing points, connected to national headquarters and number of existing points, connected to provincial and city offices and number of existing and connected points of associated businesses for executive administrations of the nation is of great importance for materialization of an electronic government in the nation, in this research, we have been determined to prioritize the aforesaid factors and indices. The research method is of descriptive mathematical type and the technique used is TOPSIS. Moreover, the names of ministries have not been given herein this survey. Keywords: National Information Network, TOPSIS and Connection Points INTRODUCTIONInformation technology is more extensive (and complicated) than computer science. This term replaced the terms of data processing and management information systems in the 1990s, which was very common in the 19760s and 1970s. Information technology usually implies all technologies that are applied in five areas of collection, saving, processing, transfer and display of data. Information technology knowledge and computer are different from each other. They have many items in common. If computer science is considered similar to mechanical engineering, information technology is like transportation. In transportation industry, automobiles, railways, airplanes and ships are available. All of these items are put forth by mechanical engineers. Meanwhile, in transportation industry, the issues associated with navigation management, traffic management, determination of transportation strategy at the levels of company, city and country. It does not directly correspond to mechanical engineering. However, information technology and communication (ICT), which is said as FAVA in Persian, is the most important notation in this field. Seyed Hamed Khosravani Shariati propounds another definition of information technology. As he says, information technology engineering is a combined knowledge of software en...

Taxation is the most important tool of the government's fiscal policy, which speeds up the process of economic growth, and constitutes one of the most major and most stable sources of income for governments. Comparison this source with other sources suggests that, whatever the contribution of taxes is more in provision of government expenditures, economic adverse effects are reduced, significantly. Accordingly, it is necessary to taxation problems, be analyzed by estimating the throughput and efficiency of the tax system, and practice, in order to overcome them, and to identify new ways of taxing, to reduce exist tax gap between tax revenues and tax capacity, by adopting the methods and measures. In the present study, as the regional study, is trying to rank Affairs tax Office of East of Tehran, by examining six factors influencing the actual capacity of tax, as amount of tax collecting, number of tax employees, etc, and testing their effectiveness with TOPSIS method, based on information from 2011, to evaluate the inter-organizational factors influence the capacity of the tax. In this study, researcher collected research data, without any kind of tampering, and with the help of interviews with tax experts, and visiting the tax affairs offices of East of the state. The results of the entropy technique, showed that the amount of collected taxes, with weight 0.2444, has the most importance, and the ratio of the number of records, compared with number of employees, with the weight of 0.0412, has the lowest importance among six identified indicators. Finally, it was determined that, among the tax Affairs Offices of East of Tehran, tax affairs office of Boomehen, with C A ₂*=0.7099, is the first, and tax affairs office of Pardis, with the C A ₁* =0.2493, is on the last place.