The purpose of this research is to analyze anemometer data to study the wind regime in Kashan and to investigate the role of different land uses in sand storms. Therefore, anemometer data obtained from synoptic station of Kashan were analyzed during a 40-year period (1966-2005) using different methods. Seasonal and annual wind roses and storm roses for different lands were created using WRPlot ...

The main purpose of this study is to provide three simulation-based risk management models for optimal placement of wind turbines in Khodabandeh city (located in the south of Zanjan province) taking into account the wake effect and uncertainty in wind speed and direction. For this purpose, wind speed and direction data were collected, then wind speed and direction uncertainty was modeled by Mon...

One of the main tasks of the control systems in the wind turbines is to maintain the power of the wind when its wind speed proceed its nominal value. Because the failure to maintain the power in its nominal value in the region of the turbine curve damages the turbine and increases the mechanical stress. This object is obtained by controlling the pitch angle in the third region of the turbine cu...

today, information technology and computers are indispensable tools of any profession and translation technologies have become an indispensable part of translator’s workstation. with the increasing demands for high productivity and speed as well as consistency and with the rise of new demands for translation and localization, it is necessary for translators to be familiar with market demands an...

the significance of the study of deixis was then mentioned. the purpose of the present study from the outset was to provide a comprehensive overview of all kinds of deixis in persian, describing and defining each in true while considering them structurally and semantically. chapter two consisted of two main parts. a review of the english studies in this respect, besides presenting persian liter...

This research aims to study the impact of temperature and wind in the southern low-pressure system and its associated precipitation in the southern regions of Iran. As The southern low pressure system moves eastward, it crosses the southern regions of Iran, causing medium and heavy rainfall in these areas. In this study, two southern low-pressure systems that caused heavy rainfall on March 11, ...

Nowadays, optimal placement of wind turbines in a wind farm is one of the major concerns of the wind farm designers. This paper concentrates on the optimal placement of wind turbines in a wind farm. The optimal placement of wind turbines has been carried out to maximize the output energy and minimize the investment cost of cable, road and wind turbines. For this purpose, Firstly, it should be d...