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Complexity and characteristic frequency studies in ECG signals of mice based on multiple scale factors

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Science China(Life Sciences) 2011年第6期54卷 544-552页

作者： YANG XiaoDong he aijun LIU Peng SUN TongFeng NING XinBao School of Computer Science and Technology China University of Mining and TechnologyXuzhou 221116China School of Electronic Science and Engineering Institute for Biomedical Electronic EngineeringNanjing UniversityNanjing 210093China

Existing methods of physiological signal analysis based on nonlinear dynamic theories only examine the complexity difference of the signals under a single sampling *** developed a technique to measure the multifractal characteristic parameter intimately associated with physiological activities through a frequency scale *** parameter is highly sensitive to physiological and pathological *** received various drugs to imitate different physiological and pathological conditions,and the distributions of mass exponent spectrum curvature with scale factors from the electrocardiogram (ECG) signals of healthy and drug injected mice were ***,we determined the characteristic frequency scope in which the signal was of the highest complexity and most sensitive to impaired cardiac function,and examined the relationships between heart rate,heartbeat dynamic complexity,and sensitive frequency scope of the ECG *** found that all animals exhibited a scale factor range in which the absolute magnitudes of ECG mass exponent spectrum curvature achieve the maximum,and this range (or frequency scope) is not changed with calculated data points or maximal coarse-grained scale ***,the heart rate of mice was not necessarily associated with the nonlinear complexity of cardiac dynamics,but closely related to the most sensitive ECG frequency scope determined by characterization of this complex dynamic features for certain heartbeat ***,we found that the health status of the hearts of mice was directly related to the heartbeat dynamic complexity,both of which were positively correlated within the scale factor around the extremum region of the multifractal *** increasing heart rate,the sensitive frequency scope increased to a relatively high *** conclusion,these data provide important theoretical and practical data for the early diagnosis of cardiac disorders.

关键词： ECG multifractality complexity frequency scale factor characteristic frequency

Location of micro-cracks in plates using time reversed nonlinear Lamb waves

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Chinese Physics B 2020年第5期29卷 311-317页

作者： Yaoxin Liu aijun he Jiehui Liu Yiwei Mao Xiaozhou Liu Key Laboratory of Modern Acoustics Institute of Acoustics and School of PhysicsNanjing UniversityNanjing 210093China Key Laboratory of Acoustics Institute of AcousticsChinese Academy of SciencesBeijing 100190China School of Electronic Science and Engineering Nanjing UniversityNanjing 210023China

A promising tool to detect micro-cracks in plate-like structures is used for generating higher harmonic Lamb *** this paper,a method combining nonlinear S0 mode Lamb waves with time reversal to locate micro-cracks is presented and verified by numerical *** different models,the contact acoustic nonlinearity(CAN)model and the Preisach-Mayergoyz(PM)model,are used to simulate a localized damage in a thin *** inversion method is employed to extract the second and fourth harmonics from the received *** reversal is performed to compensate the dispersion of S0 mode Lamb ***,the higher harmonics generated from the damaged area can be refocused on their *** investigating the spatial distribution of harmonic wave packets,the location of micro-cracks will be *** numerical simulations indicate that this method gives accurate locations of the damaged area in a ***,the PM model is proved to be a suitable model to simulate the micro-cracks in plates for generation of higher harmonics.

关键词： Lamb waves higher harmonics time reversal damage location

Acoustic radiation force on a multilayered sphere in a Gaussian standing field

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Chinese Physics B 2018年第3期27卷 299-305页

作者： Haibin Wang Xiaozhou Liu Sha Gao Jun Cui Jiehui Liu aijun he Gutian Zhang Key Laboratory of Modern Acoustics Institute of AcousticsNanjing UniversityNanjing 210093China State Key Laboratory of Acoustics Institute of AcousticsChinese Academy of SciencesBeijing 100190China School of Electronic Science and Engineering Nanjing UniversityNanjing 210023China Nanjing Drum Tower Hospital The Affiliated Hospital of Nanjing University Medical SchoolNanjing 210093China

We develop a model for calculating the radiation force on spherically symmetric multilayered particles based on the acoustic scattering *** expression is derived for the radiation force on a multilayered sphere centered on the axis of a Gaussian standing wave propagating in an ideal fluid,The effects of the sound absorption of the materials and sound wave on acoustic radiation force of a multilayered sphere immersed in water are analyzed,with particular emphasis on the shell thickness of every layer,and the width of the Gaussian *** results reveal that the existence of particle trapping behavior depends on the choice of the non-dimensional frequency ka,as well as the shell thickness of each *** study provides a theoretical basis for the development of acoustical tweezers in a Gaussian standing wave,which may benefit the improvement and development of acoustic control technology,such as trapping,sorting,and assembling a cell,and drug delivery applications.

关键词： acoustic radiation force Gaussian standing field multilayered sphere model sound scattering

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翻译地理学的名与实——贺爱军教授访谈录

中国外语研究 2020年第1期 70-74,123页

作者：孙今怡贺爱军宁波大学外国语学院浙江宁波315211 中国海洋大学外国语学院山东青岛266100

翻译地理学是在翻译文化转向的背景下兴起的一种新兴研究范式。它以翻译为本位,以地理学为方法,探究翻译现象的形成、移动、分布特征及其与自然和人文地理之间的关系,揭示译者、译场、翻译景观等翻译现象的地理基因及其发展变化规律。... 详细信息

翻译地理学是在翻译文化转向的背景下兴起的一种新兴研究范式。它以翻译为本位,以地理学为方法,探究翻译现象的形成、移动、分布特征及其与自然和人文地理之间的关系,揭示译者、译场、翻译景观等翻译现象的地理基因及其发展变化规律。在访谈中,贺爱军教授介绍了翻译地理学产生的学术背景、理论依据和研究现状,界定了翻译地理学的研究内容与研究对象,也对翻译地理学的发展前景做出了展望。

关键词：翻译地理学翻译区再地域化

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晚清至“五四”的译者形象变迁及其缘由探源

外国语 2015年第3期38卷 83-90页

作者：贺爱军宁波大学外语学院浙江宁波315211

本文梳理了晚清至"五四"期间的译者形象,并探究了译者形象形成及其转变的社会历史缘由。笔者认为译者形象既是一种具体的符号形式,也是一种社会心理表征,它折射出想象主体所处的历史语境以及主体文化对异质他者文化的想象和态度。译者... 详细信息

本文梳理了晚清至"五四"期间的译者形象,并探究了译者形象形成及其转变的社会历史缘由。笔者认为译者形象既是一种具体的符号形式,也是一种社会心理表征,它折射出想象主体所处的历史语境以及主体文化对异质他者文化的想象和态度。译者的形象建构与其说是对译者实际情况的客观反映,不如说是对中国特定历史语境的隐喻性表达。晚清至"五四"期间,在中国社会历史语境和社会风尚的双重变奏中,译者由"汉奸""假洋鬼子"的负面形象转变为"奶娘"和"盗火者"的正面形象。

关键词：译者形象通事假洋鬼子盗火者社会历史语境

Detection of healthy and pathological heartbeat dynamics in ECG signals using multivariate recurrence networks with multiple scale factors

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Chinese Physics B 2023年第10期32卷 273-282页

作者：马璐陈梅辉何爱军程德强杨小冬 School of Information and Control Engineering China University of Mining and TechnologyXuzhou 221116China Suzhou Vocational and Technical College Suzhou 234000China School of Computer Science and Technology China University of Mining and TechnologyXuzhou 221116China School of Electronic Science and Engineering Nanjing UniversityNanjing 210023China

The electrocardiogram(ECG)is one of the physiological signals applied in medical clinics to determine health *** physiological complexity of the cardiac system is related to age,disease,*** the investigation of the effects of age and cardiovascular disease on the cardiac system,we then construct multivariate recurrence networks with multiple scale factors from multivariate time *** propose a new concept of cross-clustering coefficient entropy to construct a weighted network,and calculate the average weighted path length and the graph energy of the weighted network to quantitatively probe the topological *** obtained results suggest that these two network measures show distinct changes between different *** is because,with aging or cardiovascular disease,a reduction in the conductivity or structural changes in the myocardium of the heart contributes to a reduction in the complexity of the cardiac ***,the complexity of the cardiac system is *** that,the support vector machine(SVM)classifier is adopted to evaluate the performance of the proposed *** of 94.1%and 95.58%between healthy and myocardial infarction is achieved on two ***,this method can be adopted for the development of a noninvasive and low-cost clinical prognostic system to identify heart-related diseases and detect hidden state changes in the cardiac system.

关键词： electrocardiogram signals multivariate recurrence networks cross-clustering coefficient entropy multiscale analysis

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“e21”——湖北教育信息化之路

中国电化教育 2007年第10期 22-27页

作者：何爱军湖北省教育信息化发展中心湖北武汉430071

湖北教育信息网("e21网站")是湖北教育的门户网站,它建设的目的是整合湖北省的优质教育信息资源,实现全省的共享;建设五年多来,该网站对湖北省的教育信息化起到了重要的引领作用。本文介绍了该网站的工作思路、管理机制,并提出了未来的... 详细信息

湖北教育信息网("e21网站")是湖北教育的门户网站,它建设的目的是整合湖北省的优质教育信息资源,实现全省的共享;建设五年多来,该网站对湖北省的教育信息化起到了重要的引领作用。本文介绍了该网站的工作思路、管理机制,并提出了未来的发展设想。

关键词：教育信息化 e21 区域信息化

地理空间翻译重构的缘由探究——基于《德伯家的苔丝》张谷若译本的考察

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外语电化教学 2024年第2期 52-56页

作者：袁梅贺爱军中国海洋大学

翻译是一种跨地域、跨文化、跨语言的知识重构行为。地理空间的跨语际翻译转换涉及客体空间、作者空间、文本空间、译者空间、译本空间、传受空间六重空间。作者和译者通常处于相异的地理空间,因此会产生相异的文化认同。相异的文化认... 详细信息

翻译是一种跨地域、跨文化、跨语言的知识重构行为。地理空间的跨语际翻译转换涉及客体空间、作者空间、文本空间、译者空间、译本空间、传受空间六重空间。作者和译者通常处于相异的地理空间,因此会产生相异的文化认同。相异的文化认同会引发源语文本空间在翻译转换过程中的变形,生成相近或相异的译本空间。在《德伯家的苔丝》中,译者张谷若采用了多种翻译策略成功再现或重新构建原文地理空间。当原文读者和译文读者的地理认知大体相同时,译者就会采用再现原文地理空间的翻译策略,而当原文读者和译文读者的地理认知完全相异时,译者的空间重构行为会受到客体空间、作者空间、文本空间的共同影响,在传受空间中构建出与译文读者相适应的地理空间。

关键词：《德伯家的苔丝》翻译地理学地理空间

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翻译话语的演变与重铸

外语教学 2008年第6期29卷 87-89,93页

作者：贺爱军范谊宁波大学外语学院浙江宁波315211

我国翻译理论肇始于佛经翻译,通过借用传统哲学、美学范畴,形成了特色鲜明的话语言说理路。从"信美"之辩到"文质"之争直抵"圆满调和";从"信达雅"三位一体,到"重神轻形"、"入于化境",我国形成了与西方迥然不同的翻译话语。然而,"五四"以... 详细信息

我国翻译理论肇始于佛经翻译,通过借用传统哲学、美学范畴,形成了特色鲜明的话语言说理路。从"信美"之辩到"文质"之争直抵"圆满调和";从"信达雅"三位一体,到"重神轻形"、"入于化境",我国形成了与西方迥然不同的翻译话语。然而,"五四"以后兴起了"文化拔根运动",传统翻译话语从中心走向边缘,"他者"话语在理论和实践层面占据了中心。20世纪中叶以后,随着人类认识论范式的转换,中西方学术对话的地位发生了变化,传统学术话语拥有了更为主动的精神活力,翻译话语得以重铸。笔者通过梳理我国翻译话语的千年演变,提出了其演变模式:哲学美学渊源:中心话语——"他者"介入:边缘话语——"和而不同":重铸话语,并论述了"和而不同"的翻译话语原则。

关键词：翻译话语演变重铸和而不同