نتایج جستجو برای: spectral performance

تعداد نتایج: 1196317  

In many applications of color technology such as spectral color reproduction it is of interest to represent the spectral data with lower dimensions than spectral space’s dimensions. It is more than half of a century that Principal Component Analysis PCA method has been applied to find the number of independent basis vectors of spectral dataset and representing spectral reflectance with lower di...

2003
Serge Bernard Mariane Comte Florence Azaïs Yves Bertrand Michel Renovell

Testing of Analog-to-Digital Converters is classically composed of two successive and independent phases: the histogram-based test technique evaluating static specifications and the spectral analysis technique evaluating the dynamic performances. Consequently, the fundamental objective here is to investigate the feasibility of an alternative test flow involving exclusively spectral analysis to ...

Journal: :J. Electronic Testing 2004
Serge Bernard Mariane Comte Florence Azaïs Yves Bertrand Michel Renovell

Testing of Analog-to-Digital Converters is classically composed of two successive and independent phases: the histogram-based test technique evaluating static specifications and the spectral analysis technique evaluating the dynamic performances. Consequently, the fundamental objective here is to investigate the feasibility of an alternative test flow involving exclusively spectral analysis to ...

Abdollah Moossavi, Enayatollah Bakhshi, Seyed Basir Hashemi Younes Lotfi Zahra Jeddi

Background: Variability in speech performance is a major concern for children with cochlear implants (CIs). Spectral resolution is an important acoustic component in speech perception. Considerable variability and limitations of spectral resolution in children with CIs may lead to individual differences in speech performance. The aim of this study was to assess the correlation between auditory ...

Journal: :IJICTE 2010
Nwachukwu Prince Ololube Andrew Egba Ubogu Daniel Elemchukwu Egbezor Ugbomah Nwachukwu

The effective ways of teaching research methods to students is a process closely connected to socializing students towards writing an effective research project before graduation and determines how successful and effective they are in conducting individualized research. Several factors apart from setting up a successful learning community are essential, but competencies determine faculty effect...

سادات حسنی, حدیثه, صمدزادگان, فرهاد,

Hyper spectral remote sensing imagery, due to its rich source of spectral information provides an efficient tool for ground classifications in complex geographical areas with similar classes. Referring to robustness of Support Vector Machines (SVMs) in high dimensional space, they are efficient tool for classification of hyper spectral imagery. However, there are two optimization issues which s...

2003
M. BULLO M. AOYAGI Y. KODAIRA Y. TOMIKAWA T. TAKANO

The motor/guide contact evaluation is one of the most important processes to get high performances of the linear ultrasonic motor. In this paper, displacement power spectrum is proposed and investigated to evaluate the motor/guide contact of rectangular plate linear ultrasonic motor. First, the effect

Journal: :زمین شناسی اقتصادی 0
بهرام بهرام بیگی حجت اله رنجبر جمشید شهاب پور

hyperion hyperspectral data contains a very rich source of information from the earth surface that collects 242 narrow contiguous spectral bands. achieving this source of rich information is subject to the performance of suitable image processing methods on raw satellite data. satellite image processing methods can be classified into two categories of statistical-based and spectral-based. in th...

Journal: :CoRR 2015
Xiao Li Robert W. Heath Kevin Linehan Ray Butler

positive impact metro cell antennas with narrow vertical beamwidth and electrical downtilt can have on heterogeneous cellular networks. Using a model of random cell placement based on Poisson distribution, along with an innovative 3D building model that quantifies blockage due to shadowing, it is demonstrated that network spectral efficiency and average user throughput both increase as vertical...

J. Zhou, L. Bai L. Bai, W. Zhang, X. Ke, Y. Wen, Y. Xie, Y. Zhang, Z. Zhang,

Background: To retrospectively evaluate whether quantitative information derived from spectral imaging can improve the differential diagnosis of pancreatic cystic masses including pancreatic solid pseudopapillary epithelial neoplasms (SPENs), mucin- producing cysts and pseudocysts. Materials and Methods: From June 2015 to October 2017, 56 patients (22 pseudocysts, 18 mucin-producing cysts and 1...

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