درخت حوزه‌های تخصصی

In last decades, the skillful planning of land resources has become a major issue for rural development. The development of cultivated areas becomes gradually impossible due to ever increasing population growth and urban development. Fuzzy logic is preferred to Boolean logic for land evaluation, because fuzzy techniques lead to estimate for land use suitability on a continuous scale and can therefore, be more informative than the Boolean technique. The objective of this study is to apply fuzzy set methodology in the context of a decision making process known as the Analytic Hierarchy Process (AHP) to land evaluation for irrigated wheat. The results revealed that the results obtained with fuzzy AHP method are in better agreement (R2=0.911) with the observed yield as compared to those obtained with parametric method (R2=0.804). Although, the fuzzy AHP provided more efficient and accurate results than parametric method, the choice of membership functions, width of the transition zones and weight values are determinant to achieve its realistic results in land suitability assessment.

The political and social system involved in the limbo between tradition and modernity of the Qajar Era caused widespread and quick developments in Iranian culture, art, and architecture as well as a challenge between tradition and modernity. Relatively numerous palaces built in this era were signs of greatness and distinction-seeking of the Qajar kings and aristocrats, who embraced all transformations of architecture in their era and played a significant role in changing Iranian architectural values. Therefore the purpose of the present study is to investigate developments in architecture of the Qajar Era and their effects on the evolution of palaces in this era. Using case studies methodology and referring to historical sources, contemporary studies on Qajar architecture and field studies conducted on outstanding palaces of this era, it can be concluded that the continuation of Safavid architecture early in this period, Qajar kings' tendency to Iranian ancient architecture, and the culmination of the architectural influence of the West in the Nasserid Era were the main factors effective on the formation of Qajar palaces. Moreover, the evolution of these buildings has occurred in three pre, early and late Nasserid Eras with various traditional, eclectic and European characteristics regarding the construction period and the effects of the above factors on the evolution of plans and circulation systems, facades and sections, materials, decorations, and architectural elements. In addition to shedding more light on common features of architecture and decoration of Qajar palaces, the study tried to determine their general and specific differences.

Paper undertakes software based numerical simulations in two different traditional houses in cold-dry climate of Tabriz and hot-arid climate of Yazd, The Eco Test software chosen for BIM simulations. Case study on real houses instead of hypothetical models can give more tangible results and choosing traditional houses can provide a good opportunity to compare both physical and thermal conditions, in which zones have more dense walls than contemporary typical building wall. With high thermal mass and more surface to volume ratio, investigating the effect of U-value on interior conditions are more accurate. Comparative case studies in two different climatic zones of Iran can give researchers the opportunity to compare the importance of total U-value in two severe climates in Iran. In addition, it can give the designers the insight that what design priorities must be considered in each climate. Results show that the U-value in a hot arid climate of Yazd has a more direct effect in controlling interior comfort conditions, like fluctuations of temperature and variations of summer and winter temperatures, as well as variations of temperature in a single day and total energy need and consumption in both hot months and cold months of the year.