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Hermite-Hadamard Type Inequalities for Operator h-preinvex Functions

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Communications in Mathematical Research 2019年第2期35卷 180-192页

作者： lian tie-yan Tang Wei Ji You-qing College of Arts and Sciences Shaanxi University of Science and Technology Xi'an 710021 College of Electrical and Information Engineering Shaanxi University of Science and Technology Xi'an 710021 不详

Operator h-preinvex functions are introduced and a refinement of HermiteHadamard type inequalities for such functions is established. Results proved in this paper are more general and some known results are special ca... 详细信息

关键词： Hermite-Hadamard's integral inequality operator h-preinvex function operator beta-preinvex function

Hermite-Hadamard Type Fractional Integral Inequalities for Preinvex Functions

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Communications in Mathematical Research 2018年第4期34卷 351-362页

作者： lian tie-yan tang wei zhou rui ji you-qing Faculty of Light Industry&Energy Shaanxi University of Science&TechnologyXi'an710021 College of Electrical&Information Engineering Shaanxi University of Science&TechnologyXi'an710021 College of Arts and Sciences Shaanxi University of Science&TechnologyXi'an710021 不详

In this article, we extend some estimates of the right-hand side of the Hermite-Hadamard type inequality for preinvex functions with fractional *** notion of logarithmically s-Godunova-Levin-preinvex function in second sense is introduced and then a new Herrnite-Hadarnard inequality is derived for the class of logarithmically s-Godunova-Levin-preinvex function.

关键词： Hermite-Hadamard's integral inequality Riemann-Liouville fractional integral Holder's integral inequality

Bohr Inequality for Multiple Operators

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Chinese Quarterly Journal of Mathematics 2016年第1期31卷 39-43页

作者： lian tie-yan TANG Wei Faculty of Light Industry and Energy Shaanxi University of Science and Technology College of Electrical and Information Engineering Shaanxi University of Science and Technology

An absolute value equation is established for linear combinations of two *** the parameters take special values, the parallelogram law of operator type is given. In addition, the operator equation in literature [3] and its equivalent deformation are *** on the equivalent deformation of the operator equation and using the properties of conjugate number as well as the operator, an absolute value identity of multiple operators is given by means of mathematical induction. As Corollaries, Bohr inequalities are extended to multiple operators and some related inequalities are reduced to, such as inequalities in [2]and [3].

关键词： Bohr inequality absolute value operator adjoint operator mathematical induction

Determination of ice jam thickness—A new approach

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Journal of Hydrodynamics 2024年第3期36卷 570-581页

作者： Jun Wang lian-sheng Sang Fei-hu Song tie-jie Cheng Jueyi Sui School of Civil and Water Engineering Hefei University of TechnologyHefei230009China School of Engineering University of Northern British ColumbiaPrince GeorgeCanada

In winter,rivers in cold regions often experience flood disasters resulted from ice jams or ice *** of the variation of ice jam thickness and water level during an ice jammed period are not only a practical need for ice prevention to avoid disaster and plan water resource,but also essential for the development of any mathematical model for predicting the evolution of ice *** far,some equations based on the energy equation have been proposed to describe the relationship between ice jam thickness and water ***,in the derivation of these equations,the local head loss coefficient at the ice jam head and the riverbed slope factor were ***,those reported equations cannot be used to preciously describe the flow energy equation with ice jams and accurately calculate the ice jam thickness and water *** the present study,a more comprehensive theoretical model for hydraulic calculation of ice jam thickness has been derived by considering important and essential factors including riverbed slope and local head loss coefficient at the ice jam ***,based on the data collected from laboratory experiments of ice jam accumulation,the local head loss coefficient at the ice jam head has been calculated,and the empirical equation for calculating the local head loss coefficient has been established by considering flow Froude number and the ratio of ice discharge to flow *** results of this study not only provide a new reference for calculating ice jam thickness and water level,but also present a theoretical basis for accurate CFD simulation of ice jams.

关键词： Energy equation ice jam thickness local head loss coefficient ice jam head riverbed slope

关于算子｜A+B｜~2与｜A｜~2,｜B｜~2的不等式

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西南师范大学学报(自然科学版) 2013年第8期38卷 22-24页

作者：连铁艳陕西科技大学理学院

把对算子绝对值的研究转换成对2×2算子矩阵的研究.利用算子的Hadamard乘积的性质,得到了关于A*B+B*A,|A+B|和|A|,|B|的不等式,推广了算子绝对值等式,从而得到更广泛的Bohr不等式的形式.

关键词： Bohr不等式算子绝对值伴随算子算子矩阵

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广义导算子的奇异值不等式的推广

西南师范大学学报（自然科学版） 2011年第1期36卷 58-61页

作者：连铁艳杨勇陕西科技大学理学院西安710021

利用增生算子的性质及奇异值最大最小值原理研究了广义导算子的奇异值.给出一些奇异值不等式,推广了最近一些关于导算子的结果.

关键词：广义导算子增生算子正算子奇异值

Effects of impregnation sequence on the NH_(3)-SCR activity and hydrothermal stability of a Ce-Nb/SnO_(2) catalyst

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Journal of Environmental Sciences 2024年第4期138卷 450-457页

作者： Ying Zhu Wenpo Shan Zhihua lian Jingjing Liu yan Zhang Hong He Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo Urban Environment Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesNingbo 315800China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Hydrothermal stability is crucial for the practical application of deNO_(x)catalyst on diesel vehicles,for the selective catalytic reduction of NO_(x)with NH_(3)(NH_(3)-SCR).SnO_(2)-based materials possess superior hydrothermal stability,which is attractive for the development of NH_(3)-SCR *** this work,a series of Ce-Nb/SnO_(2)catalysts,with Ce and Nb loading on SnO_(2)support,were prepared by impregnation *** was found that,the NH_(3)-SCR activities and hydrothermal stabilities of the Ce-Nb/SnO_(2)catalysts significantly varied with the impregnation sequences,and the Ce-Nb(f)/SnO_(2) catalyst that firstly impregnated Nb and then impregnated Ce exhibited the best *** characterization results revealed that CeNb(f)/SnO_(2)possessed appropriate acidity and redox ***,the strong synergistic effect between Nb and Sn species stabilized the structure and maintained the dispersion of acid *** study may provide a new understanding for the effect of impregnation sequence on activity and hydrothermal stability and a new environmental-friendly NH_(3)-SCR catalyst with potential applications for NO_(x)removal from diesel and hydrogenfueled engines.

关键词： NO_(x)emission control NH_(3)-SCR Hydrothermal stability Ce-Nb/SnO_(2)catalyst Impregnation sequence

Generalizations of Hermite-Hadamard Type Inequalities Involving S-convex Functions

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Chinese Quarterly Journal of Mathematics 2018年第3期33卷 278-286页

作者： lian tie-yan TANG Wei College of Light Industry Science and Engineering Shaanxi University of Science & TechnologyXi'an 710021 P.R. China. College of Electrical &Information Engineering Shaanxi University of Science & TechnologyXi'an 710021 P.R. China

Some new Hermite-Hadamard type's integral equations and inequalities are established. The results in [3] and [6] which refined the upper bound of distance between the middle and left of the typical Hermite-Hadamard's ... 详细信息

关键词： Hermite-Hadamard's integral inequality s-convex function HSlder's integralinequality

Structural engineering of BaWO_(4)/CsPbX_(3)/CsPb_(2)X_(5)(X=Cl,Br,I)heterostructures towards ultrastable and tunable photoluminescence

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Nano Research 2024年第3期17卷 1636-1645页

作者： Peng Liu yan Xu Bohan Li Yuchi Zhang Hongzhou lian Jun Lin Department of Chemistry College of SciencesNortheastern UniversityShenyang 110819China State Key Laboratory of Rare Earth Resource Utilization Chang Chun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

Construction of lead halide perovskite nanocrystals(LHP NCs)heterostructures is essential to obtain highly stable photoluminescence and expand their ***,a novel self-assembly strategy combining with a solvent-free thermal-assisted synthesis and a water-triggered reaction is developed to subsequently grow BaWO_(4)/CsPbX_(3)/CsPb_(2)X_(5)(X=Cl,Br,I)heterostructures at low nucleation temperature with high *** as-obtained ternary BaWO_(4)/CsPbX_(3)/CsPb_(2)X_(5)(X=Cl,Br,I)heterostructures exhibit remarkably enhanced panchromatic emission and ultrastable luminescence ascribing to the low-defect growth based on lattice *** white light-emitting diodes(WLEDs)have been constructed with a high correlated color temperature(CCT)of 7225 K and luminous efficiency of 74.4 lm·***^(3+)-doped BaWO_(4)/CsPbX_(3)/CsPb_(2)X_(5)(Ln^(3+)=Eu^(3+),Tb^(3+),Dy^(3+),Sm^(3+),Yb^(3+)/Er^(3+))nanocomposites are further designed with excitation-dependent photoluminescence and thermochromic properties,making them excellent candidates for high-level anti-counterfeiting and *** work offers a green and universal approach in assembling CsPbX_(3)(X=Cl,Br,I)on lattice-matched tungstate with adjustable panchromatic emission for versatile optical applications.

关键词： inorganic lead halide perovskites solvent-free synthesis panchromatic emission anti-counterfeiting and encryption application