درخت حوزه‌های تخصصی

Everyone acknowledges the fact that good management is one of the necessary and sufficient conditions for urban development programs. The theoretical pattern of urban governance that is in Endeavour to configure the best ways of urban management refers to a process that decisions and power enforcement take shape in it and is a place that the government, citizens and the private organizations interact with each other. Since the city of Tehran has different classes (affluent and poor), so it is expected that urban governance indicators be executed by the same way in the management of neighborhoods. In this respect, this paper examines the state of neighborhood management in three neighborhoods such as affluent (Velenjak), medium (Alestom), poor (Ismail Abad) neighborhoods in Tehran, to be good indicators of eight urban governance. The type of this research is descriptive- analytical and assessment and questioning tools from the group of experts. The sample size is equal to 60 questionnaires (three groups of 20 people in affluent, average and poor neighborhoods).the method of Sampling was also simple random sampling. The derived data were analyzed in SPSS software using MANOVA statistical tests, One-way ANOVA analysis within groups, post hoc LSD test and single-sample T-test. The results show that the factor of class is not affecting the good urban governance and we haven&rsquot found any significant difference among different classes of neighborhoods. The results also show that Alestom neighborhood in respect of good governance indicators is in rather medium condition, in the Velenjak neighborhood, participation, fairness and transparency indicators are low and the other indicators has been reported as moderate and, ultimately, in Ismail Abad neighborhood, all indicators except indicator of consensus (consensus) are low.

Salmas plain is located at the west of Uremia lake and at the 75 km of north of Uremia city. The main river of the plain, called Zulachai, is drained into Uremia Lake. Salmas aquifer is one of the coastal aquifers of Uremia Lake and has hydraulic connection with the lake. The recent draught occurrences and increased water consumption in agriculture and drinking sections water have not only caused regression of lake water, but also effected on coastal aquifer, such as Salmas plain aquifer. Over the long-term, average groundwater level in the Salmas aquifer has dropped sharply to 18/05 meters (averaging about 0/44 meters per year) and there has been 241 million cubic meters of reservoir capacity reduction. Salmas plain has two confined and unconfined Aquifers. Salmas annual depletion of groundwater resources in the study area during the water years of 2014-15 has been equal to 146 million cubic meters. The effects of land subsidence have been observed in some output areas (Kalshan and Qareh Qeshlaq areas).

The 21st century Nanotechnology has the potential to make a huge impact on sustainability; but to achieve this potential, Nanotechnology is all about getting more function on less space. In other hand, Nanotechnology is one of the most extremely important components in sustainable development. It has the potential to reduce the environmental impact and energy intensity of structures, as well as improve safety and decrease costs associated with civil infrastructure. So, nanotechnology it can one of the most extremely important component for sustainable architecture. In this research we would like to answer below questions: Can nanotechnology be developed in a sustainable manner? How nanotechnology be developed in a sustainable manner? In this Paper, first we brief describe about sustainable architecture and nanotechnology, then we shows nanotechnology it can achieving the goals of sustainable architecture. We propose a new strategy of nanotechnology to achieve sustainable development. Finally, we present a new model for nanotechnology to achieve sustainable development. This work, presents the theory of analytical methods and the analytical approach has explanatory.

Security as one of the basic human needs has a special place in relaxation, comfort and spiritual needs provision. For this reason, security is always of managers, planners, architects and urban designers' interest. Solutions and strategies of security provision have been fundamentally changed following prevailing change of housing architecture patterns from homes to residential complexes and high-rise buildings. Principles, concepts and patterns of residential complexes form are also more originated from its resources and ideas shaping namely Western culture rather than Iranian-Islamic foundations. Individual and social security is emphasized as one of effective aspects in housing design and residential complexes in Islam. The present study was done aimed to explain a conceptual framework for Iranian-Islamic design of residential complexes. The method is a qualitative type and using documents and Islamic texts and also a few examples of residential complexes and validation by experts. The results of the study show that two main principles are dignity and privacy and subsidiary principles are contentment, clarity, nature, evolution from diversity to unity, classification and spatial hierarchy and proximity of the main structure of conceptual framework of individual and social security in residential complexes.