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تعداد نتایج: 3138694 فیلتر نتایج به سال:
In this article a new method is introduced for geolocating of signal emitters which is based on evolutionary computation (EC) concept. In the proposed method two well-known members of EC techniques including Bees Algorithm (BA) and Genetic Algorithm (GA), are utilized to estimate the positions of emitters by optimizing the hyperbola equations which have been resulted from Time Difference of Arr...
Abstract The purpose of this study was to determine the effectiveness of group counseling based on sources of self- knowledge on increasing self esteem of high school girl students. Therefore 24 students were selected and assigned to two groups. Experimental (12 students) and control (12 students) groups. The experimental group received group counseling in 14 sessions. Measurement tool was POP...
Introduction: The Power plants are as the major industries that have a large number of workers, providing they health is important. Exposure to occupational noise is the pervasive physical agent in industries like power plants and may impact health and for safety status for people. Determination of the sources of noise in workplaces is important step in noise control plans. This study aimed to ...
introductionrural administration as an executive arm of councils is of important institutions in iran which are constantly facing difficulties providing finance for their commitments based on institutions. these difficulties chakllahnge their abilities in providing services to rural societies since the capacity of rural economy is lilmited in making income and the average incomeof rural familie...
background and purpose: water is the most important limiting factor of sustainable development. poor quality of water sources and lack of appropriate management in some regions are the main reasons of water crises in the country. this study was conducted to assess water sources quality and the trend of their change in rural area of sabzevar county in a five year period. materials and methods: i...
his impact on Rumi’s relations with princes, Sufi masters and disciples are of great important in the recognition of Rumi. Unfortunately except Walad Nāma’s introduction written by Homāei, nowhere the personality, thoughts and works of Soltānwalad have been examined. In the present paper an attempt has been made to survey and analizeIn the present paper an attempt has been made to survey an...
Dust is one of the common processes of arid and semiarid regions that its occurrence frequencies has increased in recent years in Iran. The proper identification of sand and dust storms (SDS) is particular importance due to its impact on the environment and human health. So far, several methods for identifying these sources have been proposed such as methods based on field studies and geomorpho...
The current CIE colour rendering index (CRI) has been widely used to test the quality of light sources over 30 years. However, this method is outdated and problematic, especially for evaluating white light emitting diode (LED) sources. A psychophysical experiment was conducted to evaluate the quality of three D65 simulators. The results were also compared with the CRI and the other method, know...
This paper presents a conceptual analysis of inequalities in healthcare associated with the discussion of dimensions, indicators and data sources that are crucial for understanding major trends within the Brazilian context. From this standpoint, the text emphasizes the importance of in-depth discussions of social inequalities, identifying changes in healthcare conditions using the concept of di...
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