نتایج جستجو برای: switching techniques

تعداد نتایج: 695833  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان - دانشکده علوم انسانی و اجتماعی 1392

most specialists in the field of foreign language teachingconsiderreading skill as an interactive process between the reader’s prior knowledge and the text.accordingly, the activation of prior knowledge for an effective comprehension is very important. it is generally agreed that the pre-reading phase is the stage where this type of interaction and activation may be enhanced throughcertain stra...

2002
Xiaoyan Sun Feng Wu Shipeng Li Wen Gao Ya-Qin Zhang

In this paper, we first describe a seamless switching scheme for scalable video bitstreams that fully takes advantage of both the high coding efficiency of non-scalable bitstreams and the flexibility of scalable bitstreams. Small bandwidth fluctuations are absorbed by the scalability of the bitstreams, while large bandwidth fluctuations are tolerated by switching between scalable bitstreams. Fl...

Journal: :International Journal of Energy and Power Engineering 2013

1993
Yechiam Yemini Danilo Florissi

Traditional switching techniques need hundredor thousand-MIPS processing power within switches to support Gbit/s transmission rates available today. These techniques anchor their decision-making on control information within transmitted frames and thus must resolve routes at the speed in which frames are being pumped into switches. Isochronets can potentially switch at any transmission rate by ...

Hassan Taghizadeh Mehrdad Tarafdar Hagh

This paper presents a new method to find the optimum switching angles in voltage source multilevel converters in order to minimize specific higher order harmonics and decrease the total harmonic distortion (THD) of their output voltage waveform. The output voltage waveform of inverter can either be in the form of staircase or PWM. In order to increase the degrees of freedom and elimination of m...

Journal: :International Journal of Computing and Digital Systems 2015

, A. R. Bakhshai, H. R. Saligheh Rad and M. Saeedifard,

Pulse Width Modulation (PWM) techniques are commonly used to control the output voltage and current of DC to AC converters. Space Vector Modulation (SVM), of all PWM methods, has attracted attention because of its simplicity and desired properties in digital control of Three-Phase inverters. The main drawback of this PWM technique is &#10its complex and time-consuming computations in real-time ...

, A. R. Bakhshai, H. R. Saligheh Rad and M. Saeedifard,

Pulse Width Modulation (PWM) techniques are commonly used to control the output voltage and current of DC to AC converters. Space Vector Modulation (SVM), of all PWM methods, has attracted attention because of its simplicity and desired properties in digital control of Three-Phase inverters. The main drawback of this PWM technique is its complex and time-consuming computations in real-time im...

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