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A Unified Approach to the Thermodynamics and Quantum Scaling Functions of One-Dimensional Strongly Attractive SU(w) Fermi Gases
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作者 余毅聪 管习文 《Chinese Physics Letters》 SCIE CAS CSCD 2017年第7期41-46,共6页
We present a unified derivation of the pressure equation of states, thermodynamics and scaling functions for the one-dimensional (1D) strongly attractive Fermi gases with SU(w) symmetry. These physical quantities ... We present a unified derivation of the pressure equation of states, thermodynamics and scaling functions for the one-dimensional (1D) strongly attractive Fermi gases with SU(w) symmetry. These physical quantities provide a rigorous understanding on a universality class of quantum criticality characterized by the critical exponents z = 2 and correlation length exponent v= 1/2. Such a universality class of quantum criticality can occur when the Fermi sea of one branch of charge bound states starts to fill or becomes gapped at zero temperature. The quantum critical cone can be determined by the double peaks in specific heat, which serve to mark two crossover temperatures fanning out from the critical point. Our method opens to further study on quantum phases and phase transitions in strongly interacting fermions with large SU ( w) and non-SU ( w ) symmetries in one dimension. 展开更多
关键词 A Unified Approach to the Thermodynamics and Quantum Scaling functions of One-Dimensional strongly Attractive SU
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On the dielectric response function and dispersion relation in strongly coupled magnetized dusty plasmas 被引量:1
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作者 M Shahmansouri N Khodabakhshi 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第10期465-470,共6页
Using the generalized viscoelastic fluid model, we derive the dielectric response function in a strongly coupled dusty magnetoplasma which reveals two different dust acoustic(DA) wave modes in the hydrodynamic and k... Using the generalized viscoelastic fluid model, we derive the dielectric response function in a strongly coupled dusty magnetoplasma which reveals two different dust acoustic(DA) wave modes in the hydrodynamic and kinetic limits. The effects of the strong interaction of dust grains and the external magnetic on these DA modes, as well as on the shear wave are examined. It is found that both the real and imaginary parts of DA waves are significantly modified in strongly coupled dusty magnetoplasmas. The implications of our results to space and laboratory dusty plasmas are briefly discussed. 展开更多
关键词 dusty plasma strongly coupled plasma MAGNETOPLASMA dielectric response function
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Strongly Generalized Convex Fuzzy-Valued Function and Its Application in Fuzzy Optimization
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作者 BAI Yu-juan LIU Kun ZHANG Chen 《Chinese Quarterly Journal of Mathematics》 2020年第4期370-387,共18页
Based on the ordering of fuzzy numbers proposed by Goetschel and Voxman,the representations and some properties of strongly preinvex fuzzy-valued function are defined and obtained, several new concepts of strongly mon... Based on the ordering of fuzzy numbers proposed by Goetschel and Voxman,the representations and some properties of strongly preinvex fuzzy-valued function are defined and obtained, several new concepts of strongly monotonicities fuzzy functions are introduced, the relationship among the strongly preinvex, strongly invex and monotonicities under some suitable and appropriate conditions is established and a necessary condition for strongly pseudoinvex functions is given. As an application, the conditions of local optimal solution and global optimal solution in the mathematical programming problem are discussed. 展开更多
关键词 Fuzzy-number-valued functions strongly generalized convexity Fuzzy optimization
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Strong Convergence of Partitioning Estimation for Nonparametric Regression Function under Dependence Samples 被引量:4
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作者 LING Neng-xiang DU Xue-qiao 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2005年第1期28-33,共6页
In this paper, we study the strong consistency for partitioning estimation of regression function under samples that axe φ-mixing sequences with identically distribution.Key words: nonparametric regression function; ... In this paper, we study the strong consistency for partitioning estimation of regression function under samples that axe φ-mixing sequences with identically distribution.Key words: nonparametric regression function; partitioning estimation; strong convergence;φ-mixing sequences. 展开更多
关键词 nonparametric regression function partitioning estimation strong convergence φ-mixing sequences
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Filling dependence of correlation exponents and metal-Mott insulator transition in strongly correlated electron systems
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作者 林明喜 祁胜文 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第12期484-488,共5页
Using a universal relation between electron filling factor and ground state energy, this paper studies the dependence of correlation exponents on the electron filling factor of one-dimensional extended Hubbard model i... Using a universal relation between electron filling factor and ground state energy, this paper studies the dependence of correlation exponents on the electron filling factor of one-dimensional extended Hubbard model in a strong coupling regime, and demonstrates that in contrast to the usual Hubbard model (gc = 1/2), the dimensionless coupling strength parameter gc heavily depends on the electron filling, and it has a "particle-hole" symmetry about electron quarter filling point. As increasing the nearest neighbouring repulsive interaction, the single particle spectral weight is transferred from low energy to high energy regimes. Moreover, at electron quarter filling, there is a metal-Mott insulator transition at the strong coupling point gc = 1/4, and this transition is a continuous phase transition. 展开更多
关键词 strong correlation correlation effect correlation exponent correlation function
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STRONG REPRESENTATIONS OF THE SURVIVAL FUNCTION ESTIMATOR ON INCREASING SETS FOR TRUNCATED AND CENSORED DATA
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作者 孙六全 郑忠国 《Acta Mathematica Scientia》 SCIE CSCD 1999年第3期251-260,共10页
In this paper, based on random left truncated and right censored data, the authors derive strong representations of the cumulative hazard function estimator and the product-limit estimator of the survival function. wh... In this paper, based on random left truncated and right censored data, the authors derive strong representations of the cumulative hazard function estimator and the product-limit estimator of the survival function. which are valid up to a given order statistic of the observations. A precise bound for the errors is obtained which only depends on the index of the last order statistic to be included. 展开更多
关键词 truncated and censored data cumulative hazard function product-limit estimator strong representations
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Applications of the Differential Operator to the Class of p-Valent Functions
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作者 ZHOU Cong-hui 《Chinese Quarterly Journal of Mathematics》 2018年第2期199-205,共7页
In this paper, we define some new subclasses of strongly close-to-star and strongly close-to-convex p-valent functions defined in the open unit disc by using a differential operator. Some inclusion results, convolutio... In this paper, we define some new subclasses of strongly close-to-star and strongly close-to-convex p-valent functions defined in the open unit disc by using a differential operator. Some inclusion results, convolution properties are studied. 展开更多
关键词 p-valent function strongly close-to-star function strongly close-to-convex function Inclusion results
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Local Polynomial Estimation of Distribution Functions
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作者 李永红 曾霞 《Journal of Southwest Jiaotong University(English Edition)》 2007年第1期65-69,共5页
Under the condition that the total distribution function is continuous and bounded on ( -∞,∞ ), we constructed estimations for distribution and hazard functions with local polynomial method, and obtained the rate ... Under the condition that the total distribution function is continuous and bounded on ( -∞,∞ ), we constructed estimations for distribution and hazard functions with local polynomial method, and obtained the rate of strong convergence of the estimations. 展开更多
关键词 Local polynomial method strong consistency Hazard function
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Charge self-consistent dynamical mean field theory calculations incombination with linear combination of numerical atomic orbitalsframework based density functional theory
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作者 Xin Qu Peng Xu +6 位作者 Zhiyong Liu Jintao Wang Fei Wang Wei Huang Zhongxin Li Weichang Xu Xinguo Ren 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第10期62-69,共8页
We present a formalism of charge self-consistent dynamical mean field theory(DMFT)in combination with densityfunctional theory(DFT)within the linear combination of numerical atomic orbitals(LCNAO)framework.We implemen... We present a formalism of charge self-consistent dynamical mean field theory(DMFT)in combination with densityfunctional theory(DFT)within the linear combination of numerical atomic orbitals(LCNAO)framework.We implementedthe charge self-consistent DFT+DMFT formalism by interfacing a full-potential all-electron DFT code with threehybridization expansion-based continuous-time quantum Monte Carlo impurity solvers.The benchmarks on several 3d,4fand 5f strongly correlated electron systems validated our formalism and implementation.Furthermore,within the LCANOframework,our formalism is general and the code architecture is extensible,so it can work as a bridge merging differentLCNAO DFT packages and impurity solvers to do charge self-consistent DFT+DMFT calculations. 展开更多
关键词 dynamical mean field theory density functional theory strongly correlated electrons
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基于代谢组学探究饮酒对大鼠血脂影响及机制
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作者 丁君平 宋艳 +3 位作者 黄张君 余松柏 刘蓉 曾南 《中国酿造》 北大核心 2025年第2期32-40,共9页
采用超高效液相色谱-四级杆静电场轨道阱高分辨率质谱(UPLC-Q/Orbitrap-HRMS)非靶向代谢组学方法,选择SD大鼠为研究对象,按照推荐成人最大饮酒量(25 g/d),分别给予低剂量(2.63 mL/kg)和高剂量(5.25 mL/kg)的某品牌52°浓香型白酒及... 采用超高效液相色谱-四级杆静电场轨道阱高分辨率质谱(UPLC-Q/Orbitrap-HRMS)非靶向代谢组学方法,选择SD大鼠为研究对象,按照推荐成人最大饮酒量(25 g/d),分别给予低剂量(2.63 mL/kg)和高剂量(5.25 mL/kg)的某品牌52°浓香型白酒及体积分数52%乙醇(5.25 mL/kg),持续30 d,探究不同给酒剂量对SD大鼠脂质代谢物以及脂质代谢相关通路变化的影响。结果表明,高剂量及低剂量连续给酒30 d,对大鼠体质量、肝脏指数、肝功能及血脂功能指标均无显著影响(P>0.05);体积分数52%乙醇灌胃30 d,可引起大鼠脂代谢紊乱,总胆固醇(TC)水平显著升高(P<0.05)。基于血清脂代谢组分的正交偏最小二乘-判别分析(OPLS-DA)能有效区分各实验组,共鉴定出814种脂质,以甘油三酯类和磷脂酰胆碱类物质为主。随着饮酒剂量的加大,大鼠发生变化的脂质代谢物数量越多。饮酒对脂质代谢相关通路主要富集于甘油磷脂代谢、亚油酸和α-亚麻酸代谢通路,乙醇组脂质代谢物还富集到胰岛素抵抗通路和脂质与动脉粥样硬化通路。 展开更多
关键词 浓香型白酒 合理饮酒 血脂 肝功能 脂质代谢组学
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MINIMAL WIDTHSS AND ORTHOGONALITY TYPES
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作者 Chan HE Horst MARTINI Senlin WU 《Acta Mathematica Scientia》 2025年第1期27-39,共13页
The minimal widths of three bounded subsets of the unit sphere associated to a unit vector in a normed linear space are studied,and three related geometric constants are introduced.New characterizations of inner produ... The minimal widths of three bounded subsets of the unit sphere associated to a unit vector in a normed linear space are studied,and three related geometric constants are introduced.New characterizations of inner product spaces are also presented.From the perspective of minimal width,strongε-symmetry of Birkhoff orthogonality is introduced,and its relation toε-symmetry of Birkhoff orthogonality is shown.Unlike most of the existing parameters of the underlying space,these new constants are full dimensional in nature. 展开更多
关键词 Birkhoff orthogonality isosceles orthogonality minimal width Singer orthogonality strong e-symmetry of Birkhoff orthogonality width function
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Strong Converse Inequalities for Certain Mixed Szász-Beta Operators 被引量:2
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作者 QI Qiu-lan ZHANG Yu-ping 《Chinese Quarterly Journal of Mathematics》 CSCD 2011年第1期152-158,共7页
In this paper,a strong converse inequality of type B in terms of a new Kfunctional Kλα f,t2(0 < α < 2,0 ≤λ≤ 1) for certain mixed Szász-Beta operators is given.By this inequality,the converse theorem c... In this paper,a strong converse inequality of type B in terms of a new Kfunctional Kλα f,t2(0 < α < 2,0 ≤λ≤ 1) for certain mixed Szász-Beta operators is given.By this inequality,the converse theorem can be obtained for the operators. 展开更多
关键词 Szász-Beta operators K-functionAL strong converse inequality Hlder inequality
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LOCAL MEDIAN ESTIMATION OF VARIANCE FUNCTION
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作者 杨瑛 W.C.Ip +1 位作者 Y.K.Kwan P.Y.K.Kwan 《Acta Mathematica Scientia》 SCIE CSCD 2004年第1期28-38,共11页
This paper considers local median estimation in fixed design regression problems. The proposed method is employed to estimate the median function and the variance function of a heteroscedastic regression model. Strong... This paper considers local median estimation in fixed design regression problems. The proposed method is employed to estimate the median function and the variance function of a heteroscedastic regression model. Strong convergence rates of the proposed estimators are obtained. Simulation results are given to show the performance of the proposed methods. 展开更多
关键词 HETEROSCEDASTICITY nonparametric median regression strong convergence rate variance function local median estimation
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SEMILINEAR HEMIVARIATIONAL INEQUALITIES WITH STRONG RESONANCE AT INFINITY
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作者 Michael Filippakis Leszek Gasi■ski Nikolaos S.Papageorgiou 《Acta Mathematica Scientia》 SCIE CSCD 2006年第1期59-73,共15页
A semilinear elliptic equation with strong resonance at infinity and with a nonsmooth potential is studied. Using nonsmooth critical point theory and developing some abstract minimax principles which complement and ex... A semilinear elliptic equation with strong resonance at infinity and with a nonsmooth potential is studied. Using nonsmooth critical point theory and developing some abstract minimax principles which complement and extend results in the literature, two results on existence are obtained. 展开更多
关键词 strong resonance hemivariational inequality LAPLACIAN principal eigenvalue locally Lipschitz function Clarke subdifferential nonsmooth criticalpoint theory
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A classical relativistic hydrodynamical model for strong EM wave-spin plasma interaction
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作者 Qianglin HU Wen HU 《Plasma Science and Technology》 SCIE EI CAS CSCD 2022年第3期14-18,共5页
Based on the covariant Lagrangian function and Euler-Lagrange equation,a set of classical fluid equations for strong EM wave-spin plasma interaction is derived.Analysis shows that the relativistic effects may affect t... Based on the covariant Lagrangian function and Euler-Lagrange equation,a set of classical fluid equations for strong EM wave-spin plasma interaction is derived.Analysis shows that the relativistic effects may affect the interaction processes by three factors:the relativistic factor,the time component of four-spin,and the velocity-field coupling.This set of equations can be used to discuss the collective spin effects of relativistic electrons in classical regime,such as astrophysics,high-energy laser-plasma systems and so on.As an example,the spin induced ponderomotive force in the interaction of strong EM wave and magnetized plasma is investigated.Results show that the time component of four-spin,which approaches to zero in nonrelativistic situations,can increase the spin-ponderomotive force obviously in relativistic situation. 展开更多
关键词 Lagrangian function strong EM wave spin plasma spin ponderomotive force
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Strong Consistency of Estimators of a Semiparametric Regression Model under Fixed Design
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作者 TIAN Ping XUE Liu-gen 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2006年第2期202-209,共8页
In this paper, we consider the following semipaxametric regression model under fixed design: yi = xi′β+g(xi)+ei. The estimators of β, g(·) and σ^2 axe obtained by using the least squares and usual nonp... In this paper, we consider the following semipaxametric regression model under fixed design: yi = xi′β+g(xi)+ei. The estimators of β, g(·) and σ^2 axe obtained by using the least squares and usual nonparametric weight function method and their strong consistency is proved under the suitable conditions. 展开更多
关键词 semiparametric regression model least square estimation weight function strong consistency
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Strong Convergence of Empirical Distribution for a Class of Random Matrices
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作者 LIANG Qing-wen MIAO Bai-qi WANG Da-peng 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2006年第1期28-32,共5页
Let {vij}, i, j = 1, 2, …, be i.i.d, random variables with Ev11 = 0, Ev11^2 = 1 and a1 = (ai1,…, aiM) be random vectors with {aij} being i.i.d, random variables. Define XN =(x1,…, xk) and SN =XNXN^T,where xi=ai... Let {vij}, i, j = 1, 2, …, be i.i.d, random variables with Ev11 = 0, Ev11^2 = 1 and a1 = (ai1,…, aiM) be random vectors with {aij} being i.i.d, random variables. Define XN =(x1,…, xk) and SN =XNXN^T,where xi=ai×si and si=1/√N(v1i,…, vN,i)^T. The spectral distribution of SN is proven to converge, with probability one, to a nonrandom distribution function under mild conditions. 展开更多
关键词 empirical spectral distribution function sample covariance matrix Stieltjes transform strong convergence
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基于边缘约束与范数比值的图像盲复原
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作者 赵小强 王涛 《兰州理工大学学报》 CAS 北大核心 2024年第1期76-83,共8页
针对现有的研究方法对运动所引起的模糊图像进行复原时效果欠佳的问题,提出一种基于边缘约束与范数比值的图像盲复原算法.该算法首先对退化图像的边缘进行约束,得到图像的强边缘结构,提高了点扩散函数估计的准确率;然后对要估计的清晰... 针对现有的研究方法对运动所引起的模糊图像进行复原时效果欠佳的问题,提出一种基于边缘约束与范数比值的图像盲复原算法.该算法首先对退化图像的边缘进行约束,得到图像的强边缘结构,提高了点扩散函数估计的准确率;然后对要估计的清晰图像构造范数比值的稀疏惩罚约束项,并将得到的强边缘信息与构造的范数比值惩罚约束项进行结合用于指引点扩散函数的复原;在对点扩散函数进行复原时,由粗到细多尺度交替迭代估计点扩散函数,使得迭代出的最大尺度更加精确;最后对图像进行非盲解卷积求解,使其复原.该算法将退化图像的边缘信息与构造的范数比值惩罚约束项进行结合指导点扩散函数的复原,可以抑制图像在复原过程中产生的大量伪迹.实验结果表明,该算法对恢复图像边缘细节具有很好的效果,可以得到优质的复原图像. 展开更多
关键词 图像盲复原 多尺度 范数比值 强边缘 点扩散函数
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从“实则阳明,虚则太阴”论治卵巢储备功能减退 被引量:1
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作者 龚思琦 王翠霞 《中医药临床杂志》 2024年第3期395-399,共5页
卵巢储备功能减退临床主要表现为月经过少、月经稀发、闭经或不孕等病症,现代医学对于此病的治疗尚存在一定的争论。目前已有大量研究表明中医治疗卵巢储备功能减退具有明显优势,中医传统医学多从肾、肝、脾、心等脏腑论治此病,清代医... 卵巢储备功能减退临床主要表现为月经过少、月经稀发、闭经或不孕等病症,现代医学对于此病的治疗尚存在一定的争论。目前已有大量研究表明中医治疗卵巢储备功能减退具有明显优势,中医传统医学多从肾、肝、脾、心等脏腑论治此病,清代医家柯韵柏在《内经》的基础上提出“实则阳明、虚则太阴”的经典论述,文章从这一理论角度出发分析此病的发病机制,力求探索临床应用中医药防治卵巢储备功能减退的有效治疗方法。文章将以“实则阳明、虚则太阴”思想为基础,对辨治卵巢储备功能减退的思路及应用做出详细阐述。 展开更多
关键词 卵巢储备功能减退 实则阳明 虚则太阴
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不同衰减函数的钢丝绳漏磁信号自适应降噪
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作者 吴东 黄升平 +3 位作者 周立峰 隋显俊 宋洪志 杨建华 《计量学报》 CSCD 北大核心 2024年第10期1549-1554,共6页
讨论了双曲线函数、指数函数、线性函数3种不同衰减函数对钢丝绳漏磁信号降噪效果的影响,对损伤含噪信号进行自适应移位平均降噪,并使用信噪比、互相关系数对降噪效果作了对比分析。结果表明,针对所用的2种漏磁信号,使用双曲线函数的降... 讨论了双曲线函数、指数函数、线性函数3种不同衰减函数对钢丝绳漏磁信号降噪效果的影响,对损伤含噪信号进行自适应移位平均降噪,并使用信噪比、互相关系数对降噪效果作了对比分析。结果表明,针对所用的2种漏磁信号,使用双曲线函数的降噪信号信噪比最大可达14.104 1 dB与10.834 9 dB,大于指数函数与线性函数所得的对应信噪比值,且得到的输出曲线平滑,具有更好的降噪效果。同时,随着噪声增大,使用双曲线函数的降噪信号互相关系数更快地接近1,具有更好的动态特性。 展开更多
关键词 漏磁检测 钢丝绳 强噪声 自适应降噪 双曲线函数 移位平均法 衰减函数
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