نتایج جستجو برای: frequency response function

تعداد نتایج: 2450971  

Journal: :journal of nanostructures 2013
n. manavizadeh f. raissi e. asl-soleimani

the performance of nanoscale field effect diodes as a function of the spacer length between two gates is investigated. our numerical results show that the ion/ioff ratio which is a significant parameter in digital application can be varied from 101 to 104 for s-fed as the spacer length between two gates increases whereas this ratio is approximately constant for m-fed. the high-frequency perform...

A. Ghannadiasl S. Khodapanah Ajirlou

Cracks cause to change dynamic response of beams and make discontinuity in slope of the deflection of the beams. The dynamic analysis of the Euler-Bernoulli cracked beam on the elastic foundation subjected to the concentrated load is presented in this paper. The stiffness of the elastic foundation and elastic supports influence on vibrational characteristics of the cracked beam. The Dynamic Gre...

Nanoemulsion is an alternative and promising approach to overcome insolubility and bioavailability problems of bioactive compounds. In this study, the sonication parameter for preparing nanoemulsions with high α- tocopherol and linolenic acid content were optimized by using response surface methodology and their stability were evaluated during 2 months’ storage. The response surface analysis re...

2013
Congzhi HUANG Qing ZHENG

In this paper, the design of linear active disturbance rejection control (LADRC) for high order systems is presented and the frequency response is analyzed. First, the LADRC for minimum-phase processes is introduced, and the parameterization of tuning paramters, which reduces the tuning parameters to controller bandwidth and observer bandwidth, is given. With the transfer function of the LADRC,...

1975
BARBARA J. ROSE MICHAEL H. BIRNBAUM

Each subject performed two tasks, dividing a line segment so that either (a) the ratio of subjective lengths corresponded to the ratio of the magnitudes of two numerals or (b) the difference in length was proportional to the numerical difference. Had subjects actually performed two operations on the same scale, the responses would have been nonmonotonically related. Instead, data for the two ta...

Journal: :Automatica 1996
Mituhiko Araki Yoshimichi Ito Tomomichi Hagiwara

This paper introduces the concept of frequency response for sampled-data systems, and explores some basic properties as well as its computational procedures. It is shown that i) by making use of the lifting technique the notion of frequency response can be naturally introduced to sampled-data systems in spite of their time-varying characteristics, ii) it represents a frequency domain steady sta...

2013
Suman HALDER

In this paper the author proposed a model that depicts not only the basic features of liquid catheter sensor but also improvement of those features. The optimum performance of the 2nd order liquid catheter sensor system depends on parameters namely natural frequency of oscillation and damping ratio and two basic features namely high frequency response and flat frequency response. As the system ...

2008
Patrick Guillaume Rik Pintelon

The statistical properties of a logarithmic leastsquares frequency-domain estimator are analyzed in an "error in-variables" framework. It is shown that, contrary to most frequency-domain estimators, the logarithmic least-squares estimator remaim "practically" "&tent when the variEsnces of the frequency-ddn data are not U priori known. If available, the variance at each spectral b e of the logar...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی 1391

the present dissertation aims to investigate four-word lexical bundles in applied linguistics research articles by iranian and internationally-published writers. the aims of this study are two-fold: first of all, attempts have been made to create a comprehensive list of the most commonly used four-word lexical bundles categorized by their type and token frequency, their structural characteristi...

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