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我国现代中小学语文课程教学问题史论纲 被引量:3
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作者 武玉鹏 韩雪屏 《中国教育科学(中英文)》 2015年第2期169-189 168 26,共24页
语文课程教学问题就是存在于语文课程教学领域,需要研究解决的矛盾或疑难。价值选择性是语文课程教学问题的本质属性。语文课程与教学问题具有易争论、易意识形态化和常在常新等特点。语文课程教学问题多而难解的原因:一是因为语文课程... 语文课程教学问题就是存在于语文课程教学领域,需要研究解决的矛盾或疑难。价值选择性是语文课程教学问题的本质属性。语文课程与教学问题具有易争论、易意识形态化和常在常新等特点。语文课程教学问题多而难解的原因:一是因为语文课程教学内部矛盾特殊而复杂;二是因为语文课程教学问题的价值选择性必然导致问题的多解性和难解性。现代语文课程与教学出现了几次较大的转型,不同的转型期会出现不同的问题;考察这些问题产生的源头和它们发展演变的脉络,就形成一个问题"谱系"。现代语文课程教学领域最为基本的问题有:语文课程定位问题;语文课程内容问题;语文课程教学的科学化问题;语文教师的专业发展问题等。 展开更多
关键词 语文课程与教学 问题 问题“谱系”
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New Integrable Couplings of Generalized Kaup-Newell Hierarchy and Its Hamiltonian Structures 被引量:3
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作者 夏铁成 张改莲 范恩贵 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第7期1-4,共4页
A new isospectral problem is firstly presented, then we derive integrable system of soliton hierarchy. Also we obtain new integrable couplings of the generalized Kaup-Newell soliton equations hierarchy and its Hamilto... A new isospectral problem is firstly presented, then we derive integrable system of soliton hierarchy. Also we obtain new integrable couplings of the generalized Kaup-Newell soliton equations hierarchy and its Hamiltonian structures by using Tu scheme and the quadratic-form identity. The method can be generalized to other soliton hierarchy. 展开更多
关键词 7the generalized Kaup-Newell hierarchy integrable couplings spectral problem
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ADJOINT SYMMETRY CONSTRAINTS OF MULTICOMPONENT AKNS EQUATIONS 被引量:14
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作者 MAWENXIU ZHOURUGUANG 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2002年第3期373-384,共12页
A soliton hierarchy of multicomponent AKNS equations is generated from an arbitraryorder matrix spectral problem, along with its bi-Hamiltonian formulation. Adjoint symmetry constraints are presented to manipulate bi... A soliton hierarchy of multicomponent AKNS equations is generated from an arbitraryorder matrix spectral problem, along with its bi-Hamiltonian formulation. Adjoint symmetry constraints are presented to manipulate binary nonlinearization for the associated arbitrary order matrix spectral problem. The resulting spatial and temporal constrained flows are shown to provide integrable decompositions of the multicomponent AKNS equations. 展开更多
关键词 Adjoint symmetry constraint Soliton equation AKNS equations Integrable decomposition Integrable Hamiltonian system
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