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An Exploration of Interpersonal Meanings in Advertising Discourse from Functional Grammar Perspective 被引量:1
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作者 刘瑜 樊燕龙 《Sino-US English Teaching》 2007年第1期40-45,共6页
Interpersonal function is one of the three metafunctions of language. This paper investigates the interpersonal meanings in Chinese cosmetic advertising discourse from mood, modality and appraise the three aspects. Ba... Interpersonal function is one of the three metafunctions of language. This paper investigates the interpersonal meanings in Chinese cosmetic advertising discourse from mood, modality and appraise the three aspects. Based on an exploratory study of data of six typical Chinese cosmetic advertising discourses, the paper claims that the distribution of mood and modality has close link with the interpersonal meaning in advertising. The Functional Grammar and Appraisal System help to reveal the interpersonal meanings of the discourse concerned. 展开更多
关键词 interpersonal meaning functional grammar appraisal system
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CONVERGENCE OF A CLASS OF MEANS OF H^p FUNCTIONS(0 被引量:1
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作者 Wang Jiwen Anhui University,China 《Analysis in Theory and Applications》 1993年第4期37-45,共9页
In this paper we study the convergence nf a class of means on H^p(G)(0<p<1),the means take the Bochner-Riesz means in[1],the generalized Bochner-Riesz means in[2],and the operators T^(Φ_r)in[3]as special cases.... In this paper we study the convergence nf a class of means on H^p(G)(0<p<1),the means take the Bochner-Riesz means in[1],the generalized Bochner-Riesz means in[2],and the operators T^(Φ_r)in[3]as special cases.We obtain weak-type estimates for the associated maximal operators and the maximal mean boundedness for the means. 展开更多
关键词 exp p<1)ON COMPACT LIE GROUPS CONVERGENCE OF A CLASS OF meanS OF H~p functionS
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On an Axiomatic about Functional Means
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作者 Mustapha Raissouli Mohamed Chergui Abdellah Alla 《Analysis in Theory and Applications》 CSCD 2018年第1期36-44,共9页
In this paper, we introduce an axiomatic approach about functional means. This includes that of operator means already introduced in the literature.
关键词 functional mean operator mean convex function.
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Application of Multiple Mean Generational Function Method to Typhoon Prediction over the Western North Pacific
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作者 Qing Chen Shuyun Yang +1 位作者 Yufang Liao Nengjin Chen 《Meteorological and Environmental Research》 CAS 2013年第4期26-28,共3页
[ Objective] The multiple mean generational function (MMGF) method was applied to forecast the annual number of typhoons (TYs) over the Western North Pacific (WNP). [Method]The method yields a number of predicto... [ Objective] The multiple mean generational function (MMGF) method was applied to forecast the annual number of typhoons (TYs) over the Western North Pacific (WNP). [Method]The method yields a number of predictors by mean generational function based on the rolling 50- year data of TYs frequency and sunspot number, and was repeated to generate forecasts year after year by optimal subset regression. [ Result] The results showed a reasonably high predictive ability dudng period 2000 -2010, with an average root mean square (RMSE) value of 1.92 and a mean absolute error (MAE) value of 1.64. [ Conclusion] Although the MMGF method needs further validation in the practical operation, it already has strong potential for the improvement of skill at forecasting annual frequency of TYs in the WNP. 展开更多
关键词 TYPHOONS Multiple mean generational function PREDICTION China
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Some Results on Areally Mean Valent Functions
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作者 魏寒柏 李万社 张良 《Chinese Quarterly Journal of Mathematics》 CSCD 1997年第4期1-15, ,共15页
Let M be the class of areally mean univalent function, f ∈M and In this paper, we estimate the arithmetical mean of coefficients Dn(λ) and the arithmetical mean of successive coefficients tn(λ) =||Dn+1(λ)|-|Dn(λ)... Let M be the class of areally mean univalent function, f ∈M and In this paper, we estimate the arithmetical mean of coefficients Dn(λ) and the arithmetical mean of successive coefficients tn(λ) =||Dn+1(λ)|-|Dn(λ)||. Our results are sharp. In addition, we also generalize Hayman's theorem on integral mean 展开更多
关键词 areally mean univalent functions maximal growth integral mean
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Generalized weighted functional proportional mean combining forecasting model and its method of parameter estimation
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作者 万玉成 盛昭潮 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2004年第1期7-11,18,共6页
A new kind of combining forecasting model based on the generalized weighted functional proportional mean is proposed and the parameter estimation method of its weighting coefficients by means of the algorithm of quadr... A new kind of combining forecasting model based on the generalized weighted functional proportional mean is proposed and the parameter estimation method of its weighting coefficients by means of the algorithm of quadratic programming is given. This model has extensive representation. It is a new kind of aggregative method of group forecasting. By taking the suitable combining form of the forecasting models and seeking the optimal parameter, the optimal combining form can be obtained and the forecasting accuracy can be improved. The effectiveness of this model is demonstrated by an example. 展开更多
关键词 combining forecasting generalized weighted functional proportional mean parameter estimation quadratic programming
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APPROXIMATION BY FABER-LAURENT RATIONAL FUNCTIONS IN THE MEAN OF FUNCTIONS OF CLASS LP(T) WITH 1
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作者 A. Cavus D. M. Israfilov 《Analysis in Theory and Applications》 1995年第1期105-118,共14页
Let Γ be a regular curve and Lp (Γ), 1<p<+∞. be the class of all complex - valued functions f de-fined on Γ which are such that |f|p is mtegrabie in sense of Lebesgue. In this work, we define the k th p-Fabc... Let Γ be a regular curve and Lp (Γ), 1<p<+∞. be the class of all complex - valued functions f de-fined on Γ which are such that |f|p is mtegrabie in sense of Lebesgue. In this work, we define the k th p-Fabcrpolynomial F k,p (z),the kth p-Faber principle part F k.p (1/z) for Γ , and defined the nth p-Fcber- Laurent rational function Rn.p (f, z) and p- generalized modulus of continuity Ωp(f, t) of a function f of Lp(Γ) We inves-tigate some properties of Fk,p (z) and Fk.p (1/z). And then we prove a direct theorem characterizing the degree of approximation with respect to Ω (. , t) in the mean of functions of Lp(Γ) by the rational junctions Rn.p (. . z). 展开更多
关键词 APPROXIMATION BY FABER-LAURENT RATIONAL functionS IN THE mean OF functionS OF CLASS LP WITH 1 Rational
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APPROXIMATION OF CONTINUOUS FUNCTIONS BY GENERALIZED KARAMATA MEANS
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作者 S.A.SETTU 《Analysis in Theory and Applications》 1994年第1期88-98,共11页
A sufficient condition for the order of approximation of a continuous 2π periodic function with a given majorant for the modulus of continuity by the [F, d_n] means of its Fourier serier to be of Jackson order is obt... A sufficient condition for the order of approximation of a continuous 2π periodic function with a given majorant for the modulus of continuity by the [F, d_n] means of its Fourier serier to be of Jackson order is obtained. This sufficient condition is shown to be not enough for the order of approximation by partial sums of their Fourier series to be of Jackson order. The error estimate is shown to be the best possible. 展开更多
关键词 exp APPROXIMATION OF CONTINUOUS functionS BY GENERALIZED KARAMATA meanS
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Some Lacunary Sequence Spaces of Invariant Means Defined by Musielak-Orlicz Functions on 2-Norm Space
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作者 Mohammad Aiyub 《Applied Mathematics》 2014年第16期2602-2611,共10页
The purpose of this paper is to introduce and study some sequence spaces which are defined by combining the concepts of sequences of Musielak-Orlicz functions, invariant means and lacunary convergence on 2-norm space.... The purpose of this paper is to introduce and study some sequence spaces which are defined by combining the concepts of sequences of Musielak-Orlicz functions, invariant means and lacunary convergence on 2-norm space. We establish some inclusion relations between these spaces under some conditions. 展开更多
关键词 INVARIANT means Musielak-Orlicz functionS 2-Norm SPACE Lacunary SEQUENCE
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Pragmatic Functions of Discourse Marker I mean—a case study
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作者 王瑞 《海外英语》 2014年第22期256-258,共3页
The present study examines the pragmatic functions of the discourse marker I mean based on a case study of an American soap opera Desperate Housewives.Four pragmatic functions of I mean are detected and discussed.Amon... The present study examines the pragmatic functions of the discourse marker I mean based on a case study of an American soap opera Desperate Housewives.Four pragmatic functions of I mean are detected and discussed.Among them,two functions are more frequently used including supplementary and explanatory function,reminding and emphasizing function. 展开更多
关键词 PRAGMATIC function DISCOURSE MARKER I mean
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Wear State Recognition of Drills Based on K-means Cluster and Radial Basis Function Neural Network 被引量:2
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作者 Xu Yang 《International Journal of Automation and computing》 EI 2010年第3期271-276,共6页
Drill wear not only affects the surface smoothness of the hole, but also influences the life of the drill. Drill wear state recognition is important in the manufacturing process, which consists of two steps: first, d... Drill wear not only affects the surface smoothness of the hole, but also influences the life of the drill. Drill wear state recognition is important in the manufacturing process, which consists of two steps: first, decomposing cutting torque components from the original signals by wavelet packet decomposition (WPD); second, extracting wavelet coefficients of different wear states (i.e., slight, normal, or severe wear) with signal features adapting to Welch spectrum. Finally, monitoring and recognition of the feature vectors of cutting torque signal are performed by using the K-means cluster and radial basis function neural network (RBFNN). The experiments on different tool wears of the multivariable features reveal that the results of monitoring and recognition are significant and effective. 展开更多
关键词 Drill wear state recognition cutting torque signals wavelet packet decomposition (WPD) Welch spectrum energy K-means cluster radial basis function neural network
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GAUSS-MEAN VALUE FORMULA FOR TRIHARMONIC FUNCTIONS AND ITS APPLICATIONS IN CLIFFORD ANALYSIS
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作者 谷龙飞 张忠祥 《Acta Mathematica Scientia》 SCIE CSCD 2013年第5期1419-1430,共12页
In this paper, the integral representation for some polyharmonic functions with values in a universal Clifford algebra Cl(Vn,n) is studied and Gauss-mean value formula for triharmonic functions with values in a Clif... In this paper, the integral representation for some polyharmonic functions with values in a universal Clifford algebra Cl(Vn,n) is studied and Gauss-mean value formula for triharmonic functions with values in a Clifford algebra Cl(Vn,n) are proved by using Stokes formula and higher order Cauchy-Pompeiu formula. As application some results about growth condition at infinity are obtained. 展开更多
关键词 triharmonic function Clifford algebra Gauss-mean value forrrmla
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Mean-square Almost Periodic Random Functions
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作者 江利娜 张传义 《Northeastern Mathematical Journal》 CSCD 2007年第3期215-225,共11页
In this paper, we present a basic theory of mean-square almost periodicity, apply the theory in random differential equation, and obtain mean-square almost periodic solution of some types stochastic differential equat... In this paper, we present a basic theory of mean-square almost periodicity, apply the theory in random differential equation, and obtain mean-square almost periodic solution of some types stochastic differential equation. 展开更多
关键词 mean-square convergence mean-square almost periodic random function Ito integration
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海岛恶劣环境对滨海特有的滨柃群落功能性状的影响
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作者 钟址非 王晓盈 +5 位作者 肖自新 朱琦琦 王彬彬 许艳蓉 李培杨 邓传远 《东北林业大学学报》 北大核心 2026年第1期68-74,101,共8页
为揭示盐雾、强风、土壤贫瘠等海岛恶劣环境对滨海特有滨柃群落功能性状的影响机制,以福建平潭7个海岛的102个滨柃群落样方为研究对象,采用群落加权平均值表征群落水平功能性状,结合相关性分析、最优模型筛选及结构方程模型,解析环境因... 为揭示盐雾、强风、土壤贫瘠等海岛恶劣环境对滨海特有滨柃群落功能性状的影响机制,以福建平潭7个海岛的102个滨柃群落样方为研究对象,采用群落加权平均值表征群落水平功能性状,结合相关性分析、最优模型筛选及结构方程模型,解析环境因子对功能性状的作用路径与贡献权重。结果表明:滨柃群落功能性状存在显著权衡,呈现保守型资源利用策略,树高与叶面积、比叶面积呈极显著负相关(p<0.01),与叶厚度、干材密度呈极显著正相关(p<0.01);在土壤因子中,全氮、有效磷及水溶性盐总量为关键因子,高pH促进树高但抑制叶面积,钾元素增加叶厚度与叶干物质质量分数;气候与地形因子通过直接与间接作用共同调控性状,海拔促进叶面积与比叶面积,样地离海岸线距离增加使叶干物质质量分数上升、种子质量下降,年均温与降水量增加使比叶面积升高。 展开更多
关键词 海岛 滨海特有物种 滨柃 群落加权平均值 功能性状
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快速运动目标的Mean shift跟踪算法 被引量:50
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作者 朱胜利 朱善安 李旭超 《光电工程》 EI CAS CSCD 北大核心 2006年第5期66-70,共5页
针对Meanshift本身的理论缺陷,提出Meanshift和卡尔曼滤波器相结合的快速目标跟踪算法。利用卡尔曼滤波器来获得每帧Meanshift算法的起始位置,然后再利用Meanshift算法得到跟踪位置。在目标出现大比例阻挡情况时,利用卡尔曼残差的计算... 针对Meanshift本身的理论缺陷,提出Meanshift和卡尔曼滤波器相结合的快速目标跟踪算法。利用卡尔曼滤波器来获得每帧Meanshift算法的起始位置,然后再利用Meanshift算法得到跟踪位置。在目标出现大比例阻挡情况时,利用卡尔曼残差的计算来关闭和打开卡尔曼滤波器,此时,目标位置的线性预测替代了卡尔曼的作用。试验证明,本算法可以实现对快速运动目标的跟踪,对阻挡也有很好的鲁棒性。 展开更多
关键词 mean SHIFT 核函数 卡尔曼滤波器 目标跟踪
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基于Mean shift的筛面物料颗粒目标运动轨迹跟踪 被引量:16
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作者 李耀明 赵湛 +1 位作者 张文斌 李洪昌 《农业工程学报》 EI CAS CSCD 北大核心 2009年第5期119-122,共4页
为了获取农业物料在风筛式清选筛面的实际运动规律,通过对多颗粒散体中的目标颗粒进行着色处理,提出采用基于颜色特征向量的Meanshift算法,实现对目标运动轨迹的跟踪。算法根据Bhattacharyya系数的大小判定跟踪目标是否被遮挡,并引入了K... 为了获取农业物料在风筛式清选筛面的实际运动规律,通过对多颗粒散体中的目标颗粒进行着色处理,提出采用基于颜色特征向量的Meanshift算法,实现对目标运动轨迹的跟踪。算法根据Bhattacharyya系数的大小判定跟踪目标是否被遮挡,并引入了Kalman滤波器设计。在正常跟踪过程中,利用Kalman滤波器预测每帧Mean shift算法的起始位置,然后利用Mean shift算法对目标进行精确定位,当目标被遮挡时,将其运动视为时不变系统,并通过Kalman滤波器估算目标近似位置。试验结果表明,该方法在复杂背景和光照变化条件下,实现了对快速运动目标的稳定持续跟踪,具有很好的鲁棒性,为散体颗粒运动规律的研究提供了一种图像检测方法。 展开更多
关键词 轨迹跟踪 KALMAN滤波器 图像处理 核函数 mean SHIFT BHATTACHARYYA系数
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核函数带宽自适应的Mean shift目标跟踪算法 被引量:18
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作者 朱胜利 朱善安 《光电工程》 EI CAS CSCD 北大核心 2006年第8期11-16,共6页
针对Meanshift核函数带宽不能实时改变的缺陷,提出一种仿射变换下的核函数带宽可变的Meanshift跟踪算法。以仿射变换来描述目标尺寸随时间的变化,分别利用Meanshift和连续两帧中匹配窗口的最大相关系数来得到仿射变换的参数。以比例参... 针对Meanshift核函数带宽不能实时改变的缺陷,提出一种仿射变换下的核函数带宽可变的Meanshift跟踪算法。以仿射变换来描述目标尺寸随时间的变化,分别利用Meanshift和连续两帧中匹配窗口的最大相关系数来得到仿射变换的参数。以比例参数计算出带宽的实时变化,其它参数可提供Meanshift更好的起始位置。这些工作改善了Meanshift算法在目标尺寸变化时的跟踪效果。实验证明,本算法能够有效地跟踪尺寸变化的目标,并且具有更好的实时性。 展开更多
关键词 mean SHIFT 核函数 目标跟踪 可变带宽
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Mean shift在目标跟踪中的应用 被引量:30
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作者 宋新 沈振康 +1 位作者 王平 王鲁平 《系统工程与电子技术》 EI CSCD 北大核心 2007年第9期1405-1409,共5页
首先总结了Mean shift的发展过程,并且分析了Mean shift算法的参数少,鲁棒性强,快速实现模式计算的特点,然后根据它在目标跟踪中的应用,总结了该算法核函数直方图对目标的特征描述比较弱,容易陷入局部最大值,不能适应目标多自由度变化... 首先总结了Mean shift的发展过程,并且分析了Mean shift算法的参数少,鲁棒性强,快速实现模式计算的特点,然后根据它在目标跟踪中的应用,总结了该算法核函数直方图对目标的特征描述比较弱,容易陷入局部最大值,不能适应目标多自由度变化的缺点,针对缺点提出的不同的改进方法进行了归纳,最后对未来的发展进行了预测。 展开更多
关键词 目标跟踪 mean shift综述 核函数 KALMAN滤波
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结合目标预估计与Mean Shift理论的运动目标跟踪算法 被引量:6
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作者 赵倩 袁健全 +1 位作者 鲁新平 李吉成 《红外与激光工程》 EI CSCD 北大核心 2010年第6期1152-1156,共5页
图像的运动包括目标、背景和平台的运动,复杂的运动关系增加了目标跟踪的难度。提出了一种有效的基于Mean Shift理论的运动目标跟踪算法。为提高算法的实时性,对Mean Shift算法的核函数进行了改进,使得加减运算替代乘方和浮点运算,大大... 图像的运动包括目标、背景和平台的运动,复杂的运动关系增加了目标跟踪的难度。提出了一种有效的基于Mean Shift理论的运动目标跟踪算法。为提高算法的实时性,对Mean Shift算法的核函数进行了改进,使得加减运算替代乘方和浮点运算,大大提高了运算效率;并通过对迭代权值的改进,强化了初始模板的主要信息,提高了算法跟踪与背景相似目标的能力;采用自动更新模板的策略,克服了目标特征分布发生改变的问题;在此基础上,引入了目标预检测,提出了综合背景差分检测的运动目标跟踪算法,实验表明:该算法在目标被遮挡情况下具有较强的适应性。 展开更多
关键词 运动目标跟踪 mean SHIFT 核函数 迭代权值 背景差分
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基于聚类准则函数的改进K-means算法 被引量:41
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作者 张雪凤 张桂珍 刘鹏 《计算机工程与应用》 CSCD 北大核心 2011年第11期123-127,共5页
K-means算法所使用的聚类准则函数是将数据集中各个簇的误差平方值直接相加而得到的,不能有效处理簇的密度不均且大小差异较大的数据集。为此,将K-means算法的聚类准则函数定义为加权的簇内标准差之和,权重为簇内数据对象数占总数目的... K-means算法所使用的聚类准则函数是将数据集中各个簇的误差平方值直接相加而得到的,不能有效处理簇的密度不均且大小差异较大的数据集。为此,将K-means算法的聚类准则函数定义为加权的簇内标准差之和,权重为簇内数据对象数占总数目的比例。同时,调整了传统K-means算法将数据对象重新分配给簇的方法,采用一个数据对象到中心点的加权距离代替传统K-means算法中的距离,将数据对象分配给使加权距离最小的中心点所在的簇。实验结果表明,针对模拟数据集的聚类,改进K-means算法可以明显减少大而稀的簇中数据对象被错误地分配到相邻的小而密簇的可能性,改善了聚类的质量;针对UCI数据集的聚类,改进算法使得各个簇更为紧凑,从而验证了改进K-means算法的有效性。 展开更多
关键词 K-meanS算法 聚类准则函数
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