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People in all ages and times have been faced with the problem of scared resources and facilities despite of the sciences and technologies they are still limited in resources. Therefore, organizations and institutions are forced to use their limited resources in the most efficient ways. In this study, the technical efficiencies of municipals in 30 provinces of Iran for the period of 2006-2008 is analyzed. The technical efficiency of each municipal is analyzed to subdivide the municipalities by efficiency. Holding the inputs total revenues, the number of personnel and area services constant the increase in the urban development costs is calculated applying a non-parametric method of DEA technical efficiency under fixed and variable returns to scale. The estimated results indicate that less than 50% of the municipals are surrounded with complete technical efficiencies and they may be used as a model for inefficient ones. Based on the method of variable returns to scale and the output- oriented the results also show that Ahvaz, Ilam, Kord, Qazvin, Tehran and Yasouj municipalities are a 100 percent efficient and they require no change in their inputs and outputs. On the other hand, Arak, Ardebil, Bandar Abbas, Bojnourd, Bushehr, Gorgan, Hamadan, Kerman, Khorram Abad, Qum, Rasht, Sanandaj, Sari, Shiraz, Urmia, Zahedan and Zanjan municipalities are all inefficient and they have never reached a complete efficiency.

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The main objective of this paper is to analyse street network structure of the deteriorated areas in order to resolve permeability problem and spatial isolation of these areas. Previous researches that investigated the problems of deteriorated areas concern about land use per capita indicated that low permeability of these areas is not about area of streets but, it is because of inadvertence towards the urban street network in developing new areas or regeneration of deteriorated areas. In both cases, insufficient network of streets and roads have been produced. The common solution to encounter shortage of permeability was widening existing streets or creating new streets. Previous research regarding resolving lake of access and isolation on deteriorated areas, have been failed because they did not carried a methodical approach toward identifying the structure problems of deteriorated areas. Regarding the above theoretical and technical shortcomings, this paper would answer to two fundamental questions: How could weaknesses of urban street structure on deteriorated areas can be round and can be resolved? Are there similar structural problems about permeability on all of the urban deteriorated areas? In order to answer to these questions, at first urban street structure of Mashhad has been analyzed utilizing Space Syntax method. This method identified the weaknesses and deficiencies of Mashhad's deteriorated structure. The results show that, there are significant differences between the structure of deteriorated areas and other parts of the city this differentiation helps to identify weaknesses in these areas. Also, analysis of urban street structure indicated that reasons of access weakness and permeability problems in various deteriorated areas are different, especially between central and suburban deteriorated areas. So, the problems of deteriorated areas cannot be resolved similarly.