نتایج جستجو برای: Constant current
تعداد نتایج: 976235 فیلتر نتایج به سال:
the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...
آموزش واژه با بهره گیری از یادگیری تلفیقی و نرم افزارهای چند رسانه ای در کلاس های آموزش زبان انگلیسی
the purpose of this study was to investigate the impact of blended learning and multimedia softwares on iranian efl students vocabulary learning. in addition, the present study tried to examine the extent to which multimedia softwares can be applied into efl classes in iran. it also attempted to find out students attitudes toward using these softwares. to this end, 87 iranian efl learners at el...
Because the power systemload the randomness of the nature, power transmission of AC induction system has the low efficiency. In order to improve the transmission efficiency,the transmission efficiency influenced factors of the system is analyzed. Based on the current source power transfer system, DC/DC circuit for dynamic adjustment method is proposed. The method ensures that the transmission e...
Threshold voltage shift ( Vth) characteristics of amorphous InGaZnO thin-film transistors under positive gate bias stress are investigated and the monitoring Vth from constant current induced drain voltage is proposed. The extracted Vth characteristics are then analyzed using the stretched exponential model and the characteristics of the subgap density of states.
................................................................................................................................ i Acknowledgement ............................................................................................................... ii List of Table ........................................................................................................................ ...
An advanced current measure probe is described for biological applications. Singular points on the body skin emit a semi-constant current that could be potentially useful for a medical diagnosis of the body organs to which any singular point is connected. In order to achieve an accurate and reliable analysis of the emitted current, all the error sources have been studied in order to design a re...
Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China. *Email: [email protected] ABSTRACT: The soil electrical conductivity (EC) refers to the capability for soil to conduct current. It is a comprehensive reflection of soil salinity and moisture. Therefore, acquiring soil EC rapidly and accurately ca...
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