درخت حوزه‌های تخصصی

Human is a compatible creature with the ability to grow the modern knowledge and new patterns of activity. Social pressures and cultural norms could affect formation of behavioral patterns and attitudes of urban planners. However, the framework is not static and could be changed over the time and the urban planners are responsible for controlling, conducting and evaluating the reflection of these changes and playing role in their formation. It should be noted that with such speed of changes in the current cities, realization of a degree of flexibility if required and the future prospects could clear flexible and creative cities as the contexts for economic, social and cultural development of societies and urban spaces could be important sites to meet needs of citizens and formation of social activities. Now in this study, which is a descriptive-analytical research in terms of nature, the main objective is to recognize required components in formation of flexible urban space in Iran and to measure the perceptions and expectations of flexible urban spaces in Iran. It should be mentioned that achievement of these spaces with flexibility capabilities needs firstly some preconditions including accessibility, diversity and readability. In this regard, at the first, qualitative data are collected using library method and the literature is reviewed to identify the most important components involved in formation of flexible urban space and then, the data are measured in frame of Delphi Method. Then, to clear the differences between expectations and perceptions, a questionnaire is used for paired mean comparison of components. Due to the difference between the existing and expected conditions, this issue was confirmed. Finally, for better understanding of the difference and using the gap scatter plot, relevant factors of physical system and energy were placed in the part of balanced and fixed factors, factors related to spatial and functional system and meeting needs of citizens as the problem and relevant factors of formation process and role of citizens in growth balance were observed.

Score for exposure factor is the sum of scores for the five criteria of precipitation, temperature, wind, weather phenomena, and horizontal visibility. Hourly data on precipitation, temperature, relative humidity, weather condition codes, and horizontal visibility obtained at 23 synoptic stations in the Province, and from those located in an area within a radius of 100 kilometers from the borders of it, since the time they were established up to the end of 2012, was first received from Iran Meteorological Organization. Those stations were then selected that had data related to eight daily measurements in the interval 1990-2010. Based on this, data processing was carried out for nine stations (five in Kermanshah Province and four in neighboring Provinces) within MATLAB environment. The scores for exposure factors for climate change in two five-year intervals were calculated to assess climate vulnerability of Kermanshah Province. In the next stage, the study period was divided into three intervals: the base interval (from 23, 9, 1990 to 21, 9, 2000), the first interval (from 22, 9, 2000 to 22, 9, 2005), and the second interval (from 23, 9, 2005 to 22, 9, 2010). Following that, exposure criteria and markers were determined. It was then necessary to define and measure a broad range of markers because of the temporal-spatial non-uniformity in the climate of Kermanshah Province that results from land location and variety in this Province. In the present research, climatic data was processed in the framework of five criteria that included 29 markers. In general, it was found that Kermanshah Province is faced with increased hazards resulting from current changes in climate.