检索结果-南通市图书馆

EEG signal artefact removal using flower pollination fractional calculus optimisation

International Journal of Intelligent Computing and Cybernetics 2022年第2期15卷 262-276页

作者： jayalaxmi anem G.Sateeshkumar R.Madhu E.C.E Aditya Institute of Technology and ManagementSrikakulamIndia E.C.E JNTUKKakinadaIndia

Purpose-The main aim of this paper is to design a technique for improving the quality of EEG signal by removing artefacts which is obtained during ***,pre-processing is done on EEG signal for quality ***,by using wavelet transform(WT)feature extraction is *** artefacts present in the EEG are removed using deep *** deep convLSTM is trained by proposed fractional calculus based flower pollination optimisation ***/methodology/approach-Nowadays’EEG signals play vital role in the field of neurophysiologic *** activities of human can be analysed by using EEG *** signals are frequently affected by noise during acquisition and other external disturbances,which lead to degrade the signal *** of EEG signals is necessary for the effective usage of signals in any *** paper proposes a new technique named as flower pollination fractional calculus optimisation(FPFCO)algorithm for the removal of artefacts fromEEGsignal through deep learning *** the integration of flower pollination optimisation and fractional calculus which takes the advantages of both the flower pollination optimisation and fractional calculus which is used to train the deep *** existed FPO algorithm is used for solution update through global and local *** this case,the fractional calculus(FC)method attempts to include the past solution by including the second order *** a result,the suggested FPFCO algorithm approaches the best solution faster than the existing flower pollination optimization(FPO)***,5 EEGsignals are contaminated by artefacts such asEMG,EOG,EEGand *** contaminatedEEG signals are pre-processed to remove baseline and power line ***,feature extraction is done by using WTand extracted features are applied to deep convLSTM,which is trained by proposed fractional calculus based flower pollination optimisation a

关键词： Wavelet transform Deep convLSTM Flower pollination optimisation algorithm Fractional calculus EEG MSE RMSE SNR

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect of Ba2+ in BNT ceramics on dielectric and conductivity properties

引用

Natural Science 2010年第4期2卷 357-367页

作者： Konapala Sambasiva Rao Kuan China Varada Rajulu Bollepalli Tilak anem Swathi 不详

The polycrystalline (Na0.5Bi0.5)1-xBaxTiO3 (x = 0.026, 0.055 & 0.065) (BNBT) ceramics have been synthesized by conventional solid state sinter-ing technique. The tolerance (t) factor of the BNBT composition have been estimated and found to be 0.988, 0.990 and 0.991 for x = 0.026, 0.055 and 0.065 respectively, revealing system is stable perovskite type structure. The com-pound has a rhombohedral-tetragonal Morphtropic Phase Boun- dary (MPB) at x = 0.065. XRD re-sults indicated the crystalline structure of the investigated materials are of single phase with rhombohedral structure and the average parti-cle size of the calcined powder is found to lie between 45 nm - 60 nm. The effect of Ba2+ on dielectric and conductivity properties in Bis-muth Sodium Titanate (BNT) has been studied. The variation of dielectric constant with fre-quency (45 Hz-5 MHz) and temperature (35℃-590℃) has been performed. The value of Tm and Td are found to decrease with increase of concentration of Barium in BNT. The value of tan in the studied materials is found to be the order of 10-2 indicating low loss materials. The evaluated Curie constant in the composi-tion is found to be the order of 105 revealing the materials belong to oxygen octahedra ferro-electrics. The theoretical dielectric data of the studied composition have been fitted by us- ing Jonscher’s dielectric dispersion relation: . The pre-factor a(T), which indicates the strength of the po-larizability showed a maximum at transition temperature (Tm). The exponent n(T) which gives a large extent of interaction between the charge carriers and polarization is found to be minimum in the vicinity of Tm. The A.C. and d.c conductivity activation energies have been eva- luated;the difference in activation energies could be due to the grain boundary effect. The activation enthalpy energies, have been esti-mated and found to be Hm = 0.37 eV, 0.26 eV and 0.25 eV for BNBT-26, BNBT-55 and BNBT-65 re-spectively.

关键词： MPB Dielectric Perovskite Conductivity Tolerance Factor

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：