As a source of drinking water, groundwater is very important in coastal aquifers. Groundwater vulnerability maps can be used in order to protect the quality of groundwater resources. Therefore, in this study, GALDIT model was applied to assess and determine vulnerable areas to seawater intrusion in Gharesoo-Gorgan Rood coastal aquifer. The GALDIT model is a type of rating models and needs to be calibrated for each study area. The novelty of this study was to use the Fuzzy Logic model to modify the GALDIT model. In addition, the weights of this model were modified by Analytical Hierarchy Process (AHP). The Pearson’ s correlation coefficient was used to validate the results. Correlation coefficient between Fuzzy-AHP and GALDIT-AHP models with TDS concentration was 0. 63 and 0. 51, respectively. As a result, Fuzzy-AHP model is the optimal model for the study area. The results of the vulnerability map indicated that areas in the northwest and west of aquifer are highly vulnerable to the seawater intrusion. The Fuzzy Logic model can be used as an effective way to modify the GALDIT model and ensure its results.

From 1961 till now different and in some parts destructive earthquakes have caused heavy damages and life losses in different parts of Iran. The absence of consideration to proper locating of cities, plan less urban growth and development, non renovation, rehabilitation and reconstruction of old urban fabrics and etc. have caused a lot of problems and difficulties in preservation of cities from natural disasters. Old fabric of Zanjan city coincides with cultural, historical and central cores of the city. Existence of urban historical and valuable elements such as traditional bazaar, Jame' mosque (sayed mosque), Imamzade seid Ebrahim mausoleum, Yokhary and Ashaghy cemetery, Daraii building, Zolfaghari house, Sabze Meidan (square), Khanom and Abasgholi khan and Mirzai mosque, Rakhtshoy khane, Sardar and Mir Bahaaldin and Haj Mamad bridge, Karvansaray Sangi, Hosinieh Aezam Zanjan are from most important elements of identity in cultural and historical part of the region. Nowadays this historical fabric have faced huge problems and difficulties such as : lack of some urban services and land uses per capita like parking and open urban space and public space, loss of appropriate hierarchy in communication network and impossibility of permeability inside organic fabric, existence of incompatible land uses, loss of sufficient green space, inefficiency of compressive and detailed plans urban development, old facades, low quality of buildings due to their age, use of inappropriate materials, separation system based on small lots, non existence of appropriate urban facilities and equipments, location of most urban fabrics in buffer zone of historical and cultural monuments and insufficient codes of construction . As a result, this old and valuable fabric has lost its population in interest of marginal regions and complexes in preparation stage. Nevertheless, it is still part of densest urban areas in Zanjan city. The experience of recent decades earthquakes (example bam) show that most human life losses and physical damages take place in old urban fabrics. Where crisis & emergency management faces fundamental problems ; accordingly preparation of detailed earthquake zoning plan, recognition of unsustainable zones in natural disasters (Earthquake, flood, storm …) and artificial disasters (fire, ditch, …), the location of centers of succor and rescue, recognition of obstructed streets, calculating the volume of collapse of building units after earthquake is of significant importance. In this article by choosing criteria like building structure, ratio of height of building to width of neighboring street, quality of building, area and separation, age, number of flats, width of street, distance from fire-prevention centers, medical centers and void lands recognition of unsustainable zones have taken place with geographical information system. Between different data modulation systems and decision-makings in urbanism like index overlay, Boolean Logic, hierarchal analysis process, neural networks, regression, correlation coefficient, factor analysis, Fuzzy Logic is one of the best models that is used in this research. The results of this research show that a great part of the region is unsustainable in natural disasters and the need for its renovation and rehabilitation is deeply necessary.

When hearing the term Fuzzy Logic, the first thing that the mind immediately goes to is the field of non-deterministic arguments, and if we want to use a term close to it to make its meaning a little clearer, we can say that Fuzzy Logic is the same as Armagon's Logic. It is an approximation that, ironically, the literal meaning of the word "argument" also refers to the clarification of something by the same thing (function input or armagon). Now the basic question is that while the educated mind of man has considered Logic as equivalent to the mechanism of definite perceptions and accurate results for more than a thousand years, how can we talk about the invention of a Logical method that is based on uncertainty? This question is doubly important from the aspect that our approximate arguments in the context of our lived life are more than our exact, definite and unambiguous arguments, that is, the same arguments that classical Logic, whether in its old or new language, He leaves it aside and does not pay attention to them, and of course he is forced to do this because he does not have the tools to analyze these arguments. This is where we unknowingly remind ourselves of Bacon's angry regret, who considers Aristotelian Logic to be a fantasy that causes waste and diversion of great talents over many centuries, a continuous and constant effort without helping a person to improve the quality of his life; A bunch of delusional nonsense, the result of which, perhaps in the most optimistic state, is Scott's adversary and the victory of futility in verbal disputes, of course, if we do not say only pointless boasting and scrutiny based on rhetoric, the fruit of which is the explanation of rational axioms. If Mr. Bacon knew about Fuzzy Logic, he would have corrected his view of Logic, and to be more precise, he would have separated Aristotle from Logic, not Logic from science. One of the most important advantages of Fuzzy Logic is that it can introduce a way to enter the knowledge and experiences of experts into intelligent systems that are based on sensitive and practical decisions and choices and develop the previous absolute correct and incorrect Logic. The basis of the analysis in the present research is to examine the components of two types of Logic, i.e. classical Logic and Fuzzy Logic, and clarify the understanding of the Logical concepts and philosophical foundations of classical Logic, as well as comparing it with the concepts of Fuzzy Logic. The research results indicate: these two types of Logic have fundamental differences from an epistemoLogical point of view; Aristotle's epistemoLogical foundation is based on the certainty-oriented duality of "either this/or that", while the Fuzzy epistemoLogical foundation is based on a multi-valued system and that both Logics are a contradictory understanding of what the mind and the external world are and the connection between They both give hands.

Today, with respect to the role and importance of urban green space in urban life and its physical stability and effectiveness of urban systems and benefits in different ecoLogical, social and economic, it is undeniable to use green space per capita in urban areas as one of the basic issues in planning and urban management. Urban green space, including land use and distribution that it is important in the Mashhad city, including the cities of the status of green space, is not appropriate; so that based on the findings, the average green space per capita in Mashhad is 5.51, m, while the standard MHUD is 12 square meters per capita . Therefore, it has suggested, there seems to exist a huge gap. However, its spatial distribution is very unbalanced and disproportionate. Green space areas such as Samen with 1.2, square meters and 21 square meters has per capita area of only seven. The method of this study was descriptive-analytic and theoretical-practical. The nature shows that, contrary to national and international standards for green space, the green space in the city is very low and its spatial distribution in twelve areas in Mashhad, is also facing a severe failure and is not balanced in this regard. In this study for analysis to determine the optimum location of green space model layers required Logic Fuzzy, AHP and means nearest neighbor were used for the operation of the software of ARC / GIS and Expert choice. Five spectra of very good, good, fair, poor and very poor were recognized. Then the act of prioritizing was rendered.