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A hyperbolic function approach to constructing exact solitary wave solutions of the Hybrid lattice and discrete mKdV lattice 被引量:12
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作者 扎其劳 斯仁道尔吉 《Chinese Physics B》 SCIE EI CAS CSCD 2006年第3期475-477,共3页
Some new exact solitary wave solutions of the Hybrid lattice and discrete mKdV lattice are obtained by using a hyperbolic function approach. This approach can also be applied to other nonlinear differential-difference... Some new exact solitary wave solutions of the Hybrid lattice and discrete mKdV lattice are obtained by using a hyperbolic function approach. This approach can also be applied to other nonlinear differential-difference equations. 展开更多
关键词 hyperbolic function approach nonlinear differential-difference equation exact solitary wave solution
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A DUAL-RELAX PENALTY FUNCTION APPROACH FOR SOLVING NONLINEAR BILEVEL PROGRAMMING WITH LINEAR LOWER LEVEL PROBLEM 被引量:7
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作者 万仲平 王广民 吕一兵 《Acta Mathematica Scientia》 SCIE CSCD 2011年第2期652-660,共9页
The penalty function method, presented many years ago, is an important nu- merical method for the mathematical programming problems. In this article, we propose a dual-relax penalty function approach, which is signifi... The penalty function method, presented many years ago, is an important nu- merical method for the mathematical programming problems. In this article, we propose a dual-relax penalty function approach, which is significantly different from penalty func- tion approach existing for solving the bilevel programming, to solve the nonlinear bilevel programming with linear lower level problem. Our algorithm will redound to the error analysis for computing an approximate solution to the bilevel programming. The error estimate is obtained among the optimal objective function value of the dual-relax penalty problem and of the original bilevel programming problem. An example is illustrated to show the feasibility of the proposed approach. 展开更多
关键词 Nonlinear bilevel programming penalty function approach dual-relax strategy
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Ideal Spin Hydrodynamics from the Wigner Function Approach 被引量:2
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作者 Hao-Hao Peng Jun-Jie Zhang +1 位作者 Xin-Li Sheng Qun Wang 《Chinese Physics Letters》 SCIE CAS CSCD 2021年第11期37-43,共7页
Based on the Wigner function in local equilibrium, we derive hydrodynamical quantities for a system of polarized spin-1/2 particles: the particle number current density, the energy-momentum tensor, the spin tensor, an... Based on the Wigner function in local equilibrium, we derive hydrodynamical quantities for a system of polarized spin-1/2 particles: the particle number current density, the energy-momentum tensor, the spin tensor, and the dipole moment tensor. Compared with ideal hydrodynamics without spin, additional terms at the first and second orders in the Knudsen number Κ_(n) and the average spin polarization Χ_(s) have been derived. The Wigner function can be expressed in terms of matrix-valued distributions, whose equilibrium forms are characterized by thermodynamical parameters in quantum statistics. The equations of motion for these parameters are derived by conservation laws at the leading and next-to-leading order Κ_(n) and Χ_(s). 展开更多
关键词 FRAME Ideal Spin Hydrodynamics from the Wigner function approach
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On limit cycle chattering in sliding mode control systems under the influence of sampling intervals based on describing function approach 被引量:1
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作者 Kang Hongbo Shen Yu 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2016年第1期55-59,共5页
In this paper, the influence of sampling intervals on the chattering in sliding mode (SM) control systems is considered. The describing function (DF) approach is employed to analyze the chattering characteristics ... In this paper, the influence of sampling intervals on the chattering in sliding mode (SM) control systems is considered. The describing function (DF) approach is employed to analyze the chattering characteristics in the sampling SM control. By the DF calculations and limit cycle existence conditions, an unstable limit cycle and two stable limit cycles are found in the SM control system. The frequencies and amplitudes of the two limit cycles can also be estimated by graphical calculations. The estimation accuracy of chattering parameters is evaluated by the simulations. The results of simulations show that the system could converge to a large and a small limit cycle from different initial conditions. 展开更多
关键词 sampling interval chattering parameters describing function approach multiple limit cycle analysis
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Jinzhai County Household Technical Change and Efficiency Change Analysis: Stochastic Frontier Production Function Approach
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作者 LIU CanChina National Forestry Economics and Development Research Center, Beiiing100714 《Chinese Forestry Science and Technology》 2003年第1期34-43,共10页
Stochastic frontier production function approach is adopted, 93 farmer samples have been collected, pure efficiency, technical efficiency, technical change and scale efficiency and the institutional contribution have ... Stochastic frontier production function approach is adopted, 93 farmer samples have been collected, pure efficiency, technical efficiency, technical change and scale efficiency and the institutional contribution have been calculated. The results indicated that increasing productivity is the sole measurement to reduce poverty, institution and technical change are the two key factors. Therefore, stable institution, improving technical changes are required. At present, it is urgent to make technical progre... 展开更多
关键词 PRODUCTIVITY poverty reduction stochastic frontier production function approach forestry economics
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Skopos:The Central Theory of Functional Approach
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作者 李永秀 《海外英语》 2012年第24期159-161,共3页
Skopos is the central theory of functional approach. In this article, firstly, it will discuss Katharina Reiss's Skopostheorie. Secondly, it will explain Has. J. Vermeer's Skopostheorie. Thirdly, it will analy... Skopos is the central theory of functional approach. In this article, firstly, it will discuss Katharina Reiss's Skopostheorie. Secondly, it will explain Has. J. Vermeer's Skopostheorie. Thirdly, it will analyze Justa Holz-Manttari and Chrisriane Nord's Skopostheorie. Finally, it will give some opinions the importance and practicality of Skopostheorie in the translating. 展开更多
关键词 Skopos CENTRAL THEORY functionAL approach translat
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The Development of Meta-functional Approaches in Translation Studies
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作者 李菁菁 《海外英语》 2012年第22期159-160,168,共3页
Functional linguistics has exerted an increasing impact on modern linguistic studies.Functional approaches,especially metafunctions have undergone a process of development and improvement.The affirmation of the metafu... Functional linguistics has exerted an increasing impact on modern linguistic studies.Functional approaches,especially metafunctions have undergone a process of development and improvement.The affirmation of the metafunctions of language has aroused more and more scholars'concern on the"functional"facet of language,especially in Translation studies.The formation and improvement of functional approaches are introduced separately. 展开更多
关键词 meta-functional approachES metafunction translatio
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Functional Approach to the C-E Translation of Tourist Material
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作者 李先玉 《海外英语》 2014年第24期131-133,共3页
Tourist material has its own text features.To translate tourist material is to achieve its purpose by transferring its pragmatic force,which is determined by text features and functions of tourist material.Which strat... Tourist material has its own text features.To translate tourist material is to achieve its purpose by transferring its pragmatic force,which is determined by text features and functions of tourist material.Which strategies exactly should be used in a certain circumstance is not important provided the pragmatic force is transmitted successfully. 展开更多
关键词 functionAL approach TOURIST MATERIAL TRANSLATION t
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The Application of Cognitive-Functional Approach in College English Teaching
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作者 王巧 《海外英语》 2018年第5期233-234,共2页
The Cognitive-Functional Approach combines the linguistic views of two major linguistic theories,formalism linguistics and functional linguistics.This approach fully exerts the innate language competence of foreign la... The Cognitive-Functional Approach combines the linguistic views of two major linguistic theories,formalism linguistics and functional linguistics.This approach fully exerts the innate language competence of foreign language learners,help learners to set the language parameter of the target language and explore the rules of target language actively.On the other hand,this approach also advocates the ability of foreign language learners to choose the proper language form in a specific language environment and to train learners'communicative competence. 展开更多
关键词 The Cognitive-functional approach College English teaching
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Mass predictions of the relativistic continuum Hartree-Bogoliubov model with radial basis function approach 被引量:1
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作者 Min Shi Zhong-Ming Niu Hao-Zhao Liang 《Chinese Physics C》 SCIE CAS CSCD 2019年第7期53-60,共8页
The radial basis function(RBF) approach is a powerful tool to improve nuclear mass predictions. By combining the RBF approach with the latest relativistic continuum Hartree-Bogoliubov(RCHB) model, the local systematic... The radial basis function(RBF) approach is a powerful tool to improve nuclear mass predictions. By combining the RBF approach with the latest relativistic continuum Hartree-Bogoliubov(RCHB) model, the local systematic deviations between the RCHB mass predictions and the experimental data are eliminated, and the root-meansquare(rms) mass deviation is significantly reduced from 7.923 MeV to 0.386 MeV. However, systematic deviations between the RBF improved mass predictions and the experimental data remain for nuclei with four different odd-even parities, i.e.(even Z, even N),(even Z, odd N),(odd Z, even N), and(odd Z, odd N). They can be reduced by separately training RBF for the four groups of nuclei, and the resulting rms deviation decreases to 0.229 MeV. It is found that the RBF approach can describe the deformation effects neglected in the present RCHB mass calculations, and also improves the description of the shell effect and the pairing effect. 展开更多
关键词 nuclear MASSES RADIAL basis function approach RELATIVISTIC CONTINUUM Hartree-Bogoliubov MODEL
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New Approach for China's Agricultural Modernization Practice from the Perspective of Multiplex Function 被引量:2
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作者 YUAN Li School of Tourism and Culture Industry,Chengdu University,Chengdu 610106,China 《Asian Agricultural Research》 2011年第8期11-14,共4页
This paper analyzes the multiplex composite function of agriculture comprehensively as follows.The first is political function:it can ensure the national food security;the second is economic function:it can promote ag... This paper analyzes the multiplex composite function of agriculture comprehensively as follows.The first is political function:it can ensure the national food security;the second is economic function:it can promote agricultural competitiveness and increase farmers' income;the third is social function:it can promote the construction of new socialist village;the fourth is ecological function:it can conserve the resources environment and guarantee sustainable development of agriculture.In terms of reference of international theory and the main innovative experience of domestic agricultural modernization practice,this paper points out the new approach for agricultural modernization practice in China,and puts forward institutional guarantee based on agricultural multiplex function as follows:we should gradually promote new land system taking land transfer as major content;we should establish rational transfer system of rural labour forces;we should establish virtuous circular agricultural financial credit system;we should hew to the innovation and promotion system of agricultural technology;we should establish strict the system of resources environment and ecological protection;we should establish the agricultural risk security system. 展开更多
关键词 AGRICULTURAL MODERNIZATION Multiplex function Appr
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A functional approach to improving non-English majors' writing proficiency 被引量:1
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作者 LI Sh un-ying 《Sino-US English Teaching》 2010年第3期34-37,共4页
Problems in generating and organizing ideas, in coherence and language competence are common in non-English majors' writings. To improve their writing proficiency, the writing course should have real-life purposes, b... Problems in generating and organizing ideas, in coherence and language competence are common in non-English majors' writings. To improve their writing proficiency, the writing course should have real-life purposes, balance between real and display writing, between product and process approaches, vary writing activities, train strategies in improving coherence, balance the content of feedback and use various forms of feedback. 展开更多
关键词 problems in non-English majors' writings a functional approach improving non-English majors' writing proficiency
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FUZZY APPROACHING SET AND FUZZYAPPROACHING FUNCTIONAL MAPPING
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作者 曹纯 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 1998年第11期0-0,0-0+0-0+0-0+0-0+0,共11页
By establishing the concepts of fuzzy approaching set and fuzzy approaching functional mapping and making research on them, a new method for time series prediction is introduced.
关键词 fuzzy approaching set fuzzy approaching functional mapping time series prediction
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Relaxed Stability Criteria for Time-Delay Systems:A Novel Quadratic Function Convex Approximation Approach
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作者 Shenquan Wang Wenchengyu Ji +2 位作者 Yulian Jiang Yanzheng Zhu Jian Sun 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2024年第4期996-1006,共11页
This paper develops a quadratic function convex approximation approach to deal with the negative definite problem of the quadratic function induced by stability analysis of linear systems with time-varying delays.By i... This paper develops a quadratic function convex approximation approach to deal with the negative definite problem of the quadratic function induced by stability analysis of linear systems with time-varying delays.By introducing two adjustable parameters and two free variables,a novel convex function greater than or equal to the quadratic function is constructed,regardless of the sign of the coefficient in the quadratic term.The developed lemma can also be degenerated into the existing quadratic function negative-determination(QFND)lemma and relaxed QFND lemma respectively,by setting two adjustable parameters and two free variables as some particular values.Moreover,for a linear system with time-varying delays,a relaxed stability criterion is established via our developed lemma,together with the quivalent reciprocal combination technique and the Bessel-Legendre inequality.As a result,the conservatism can be reduced via the proposed approach in the context of constructing Lyapunov-Krasovskii functionals for the stability analysis of linear time-varying delay systems.Finally,the superiority of our results is illustrated through three numerical examples. 展开更多
关键词 Equivalent reciprocal combination technique quadratic function convex approximation approach STABILITY timevarying delay
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The Functional Approach: Material and Methods
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作者 Huijuan Sui Ru Wang 《Sino-US English Teaching》 2005年第11期39-40,47,共3页
From 1970 onwards, Halliday worked on the functional aspect of grammar. He mentioned the language as a form of "doing" rather than a form of "knowing". He believes that language is what it is because it has to ser... From 1970 onwards, Halliday worked on the functional aspect of grammar. He mentioned the language as a form of "doing" rather than a form of "knowing". He believes that language is what it is because it has to serve certain function. In other words, social demands on language have helped to shape its structure. This theory distinguishes linguistic behavior potential from actual linguistic behavior. That means the speaker can do many things in certain language: making an invitation, expressing hope, inquiry, agreement, refuse and etc. Therefore EFL teaching is to develop the abilities to communicate with others, that is, listening, speaking, reading, writing and translating. This paper wants to discuss Halliday's theory about the functional approach and how to make good use of it to the language leaming and teaching. 展开更多
关键词 the functional approach EFL STUDENT-CENTERED
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A systemic functional approach to EFL writing assessment
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作者 LI Qing-feng 《Sino-US English Teaching》 2010年第8期5-9,共5页
The present study aims to describe theme choices in students' writing with a systemic functional approach. The analysis of a student's written work chosen at random shows the student writer can apply various theme t... The present study aims to describe theme choices in students' writing with a systemic functional approach. The analysis of a student's written work chosen at random shows the student writer can apply various theme types in writing after receiving instruction in reading class. The author hopes to propose the pedagogical implication of teaching functional linguistics knowledge to advanced learners, because it gives the view to the students to write cohesive and coherent texts. 展开更多
关键词 systemic functional approach theme choices writing assessment
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Approaches to Pendent Groups' Functionalization of Polyimide
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作者 FAN Hao-jun GU Yi 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2002年第1期95-102,共8页
Pendent groups' functionalization of polyimide is an optimum approach to improve its processability and achieve functionalized polyimide materials. There are two types of modification routes for pendent groups'... Pendent groups' functionalization of polyimide is an optimum approach to improve its processability and achieve functionalized polyimide materials. There are two types of modification routes for pendent groups' functionalization of polyimide: monomer route and macromolecular route. In this paper, various approaches for pendent groups' functionalization of polyimide are introduced. At the same time, a new method to achieve functional polyimide materials without decreasing its thermal stability and mechanical properties is mentioned. 展开更多
关键词 POLYIMIDE functional pendent group approach
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An Analysis of Lyrics Translation Based on Functional Approaches of Reiss——A case study of Qian Li Zhi Wai
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作者 杨敬妹 《海外英语》 2018年第20期51-52,共2页
As a bridge for cross-cultural communication, Chinese songs, which lay considerable emphasis on literary value of lyrics,play a critical role in promoting Chinese culture. High-qualitytWraanis lation of lyrics is of g... As a bridge for cross-cultural communication, Chinese songs, which lay considerable emphasis on literary value of lyrics,play a critical role in promoting Chinese culture. High-qualitytWraanis lation of lyrics is of great importance in cross-cultural process.By conducting a case study of lyrics translation of Qian Li Zhibased on Functional approaches of Reiss—Functional charac-teristics of text types and its links to translation methods, this paper explores practical methods and principles in lyrics translation. 展开更多
关键词 cross-cultural communication functional approaches of Reiss principles and methods in lyrics translation
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A Novel Approach for Evaluation of Food Functions and Safety Applied in RR GM Soybeans
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作者 Wei LONG Hao WANG +6 位作者 Weihong LI Xiu SHEN Jiali BAI Dezhi WANG Xiaoguang WANG Saijun FAN Zewei ZHOU 《Agricultural Biotechnology》 CAS 2013年第3期5-11,共7页
[Objective] This study aimed to evaluate tbe healthy risk of genetically modified ( GM ) soybeans by using a novel approach for functions and safety of food. [ Me^od] Different from traditional evaluation of substan... [Objective] This study aimed to evaluate tbe healthy risk of genetically modified ( GM ) soybeans by using a novel approach for functions and safety of food. [ Me^od] Different from traditional evaluation of substantial equivalence, three great innovations were performed in this study, involving in basic diet, evalu- ation approaches and principle, as well as the clarification of connotation differences between absolute and relative mass of organs. Hence a novel BDI-GS (Bendib Damage Index and General Score) evaluation approach was established and applied in comparative evaluation between RR GM and natural soybeans. Healthy male ICR mice during linear growth were selected; experimental mice were fed with 15% RR GM soybeans and 15% natural soybeans blending maize meal diets, and control mice were fed with single maize meal diet for 13 d; the mice were dissected after collecting blood samples and perfectly obtained nine organs or tissues to re- cord their masses and conduct statistical analyses. [Result] Plenty of matching information was obtained through simple design. The growth performance of treated mice was markedly of individual differences, some mice were thwarted due to regular intake of RR soybeans. Meanwhile, the functions and safety of RR soybeans were markedly lowered in overall nutritional and healthy effects than those of natural soybeans expressed in GS values, and presents some declines in nutrition and health of thymus, pancreas and spermary; especially, it can make thymus immune (P 〈0.05) in markedly lower level than that of natural soybeans. [ Conclusion] Therefore, major troubles and risks of RR soybeans intake are of personal risks in different degrees, in addition, it may increase sub-health and related chronic epi- demics risks, and herein it will presents certain safety issues. The creation of this novel evaluation system provides a simple and available evaluation approach for functions and potential risks revelation of food effects, and will yield far-reaching influences to safety evaluation and healthy development of GM foods, as well as public health. 展开更多
关键词 Genetically modified soybeans Animal model Food quality Evaluation approach function and safety
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Approach to Riemann Hypothesis by Combined Commensurable Step Function Approximation with Bonnet Method
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作者 Alfred Wünsche 《Advances in Pure Mathematics》 2020年第5期201-228,共28页
To the Riemann hypothesis, we investigate first the approximation by step-wise Omega functions Ω(u) with commensurable step lengths u0 concerning their zeros in corresponding Xi functions Ξ(z). They are periodically... To the Riemann hypothesis, we investigate first the approximation by step-wise Omega functions Ω(u) with commensurable step lengths u0 concerning their zeros in corresponding Xi functions Ξ(z). They are periodically on the y-axis with period proportional to inverse step length u0. It is found that they possess additional zeros off the imaginary y-axis and additionally on this axis and vanish in the limiting case u0 → 0 in complex infinity. There remain then only the “genuine” zeros for Xi functions to continuous Omega functions which we call “analytic zeros” and which lie on the imaginary axis. After a short repetition of the Second mean-value (or Bonnet) approach to the problem and the derivation of operational identities for Trigonometric functions we give in Section 8 a proof for the position of these genuine “analytic” zeros on the imaginary axis by construction of a contradiction for the case off the imaginary axis. In Section 10, we show by a few examples that monotonically decreasing of the Omega functions is only a sufficient condition for the mentioned property of the positions of zeros on the imaginary axis but not a necessary one. 展开更多
关键词 RIEMANN Zeta function RIEMANN Xi function Second Mean-Value approach (Bonnet Method) Chebyshev Polynomials BESSEL functions
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