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分析力学中Santilli方法和Engels第一方法的意义和局限性
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作者 丁光涛 《力学与实践》 北大核心 2017年第2期180-184,共5页
讨论变分法逆问题理论中的两种构造拉格朗日函数的基本方法:Santilli方法和Engels第一方法.(1)指出Santilli方法的理论意义在于直接用构造法证明自伴随微分方程能够从变分原理导出,即表示为欧勒-拉格朗日方程形式.(2)提出利用Santilli... 讨论变分法逆问题理论中的两种构造拉格朗日函数的基本方法:Santilli方法和Engels第一方法.(1)指出Santilli方法的理论意义在于直接用构造法证明自伴随微分方程能够从变分原理导出,即表示为欧勒-拉格朗日方程形式.(2)提出利用Santilli方法构造的结果,不是唯一的拉格朗日函数,而是一规范等效的拉格朗日函数族,为此修正了该方法.(3)指出在实际应用中Santilli方法的局限性,特别是对某些力学系统,可能因对参变量的定积分发散,而不能有效构造拉格朗日函数.(4)分析Engels第一方法的意义和优越性,同时指出这种方法存在与Santilli方法相似的局限性.(5)以两个力学系统为例,说明上述讨论的结论. 展开更多
关键词 逆问题 拉格朗日函数 Santilli方法 engels第一方法
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Study on the Background,Scientific Connotation and Contemporary Value of Marx’s and Engels’s Peasant Thoughts
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作者 Han Zhihong 《学术界》 CSSCI 北大核心 2019年第4期205-214,共10页
In the process of leading the international communist movement,Marx and Engels faced the profound influence of social revolution and multi-social thoughts caused by the development of capitalism.They always stood at t... In the process of leading the international communist movement,Marx and Engels faced the profound influence of social revolution and multi-social thoughts caused by the development of capitalism.They always stood at the historical height and the forefront of the times with their attention attached to and study the peasant issues,on the basis of the need to provide scientific theoretical guidance for the workers’ movement and the revolutionary allied forces.Marx and Engels insisted on the connection between theory and practice,the unity of materialism and dialectics,the combination of principle and flexibility,the principle of complementing macro and micro analysis,and the features of peasantry class,personality characteristics,revolutionary nature,political attitudes and history of peasants and other in-depth analysis being accomplished and put forward practical and feasible joint measures to form a peasant thought with great scientific connotation.This idea is still of important value for the implementation of the rural revitalization strategy by our party in the new era and the proper resolution of the “three rural issues”. 展开更多
关键词 Marx engels PEASANT THINKING materialist DIALECTICS "Three Rural Issues"
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Human Intelligence,Human Nature and Humanism:Approaches &Strategic Implications of Engels' Three Major Human Thoughts
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作者 Kai Fang 《学术界》 CSSCI 北大核心 2018年第10期273-282,共10页
Based on the study of Engels' thought of Marxist humanism and combined with the current academic discussions on Marx's"all-round person","whole person"and"free person"and other re... Based on the study of Engels' thought of Marxist humanism and combined with the current academic discussions on Marx's"all-round person","whole person"and"free person"and other related discussions,this paper, from the perspectives of human educational knowledge,human fraternity and human realization,aims to establish Engels' path of"trinity"in the humanistic construction of"human intelligence,human nature and humanism." 展开更多
关键词 engels human THOUGHT construction path STRATEGIC IMPLICATION
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Realistic Meaning of Agricultural Crisis Theory of Marx and Engels
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作者 Jiefang ZHU 《Asian Agricultural Research》 2016年第12期57-59,65,共4页
Agricultural crisis theory of Marx and Engels is an indispensable important component in Marx economic crisis theory system. In the process of China market economy quickly developing,although comprehensive agricultura... Agricultural crisis theory of Marx and Engels is an indispensable important component in Marx economic crisis theory system. In the process of China market economy quickly developing,although comprehensive agricultural crisis does not appear,agricultural crisis sign has appeared. Therefore,it has very important theoretic value and actual significance to learn and study agricultural crisis theory of Marx and Engels. 展开更多
关键词 Marx and engels Agricultural crisis theory Realistic meaning
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An Overview of the Study of the Materialist Dialectics of Late Engels and the Marxist Dialectical Debate
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作者 Jianxin Li 《Journal of Contemporary Educational Research》 2020年第7期152-154,共3页
This year marks the 200th anniversary of the birth of the great proletarian revolutionary mentor Engels,and the theoretical community has once again started a wave of research on his thought.On the basis of Hegel’s d... This year marks the 200th anniversary of the birth of the great proletarian revolutionary mentor Engels,and the theoretical community has once again started a wave of research on his thought.On the basis of Hegel’s dialectic,Engels inherited and developed Marx’s dialectic,and founded the materialist dialectic,which he called“the best tool and the sharpest weapon”.However,the relationship between Engels’materialist dialectics and Marx’s dialectics has been debated for more than a hundred years in the theoretical circles both at home and abroad,and it is of great significance to correctly summarize and elaborate the domestic and international views in order to clarify the internal logic and truth of Engels’materialist dialectics. 展开更多
关键词 Late engels Marx Materialist dialectics Publication date:July 2020
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The Review and Prospect of Marx and Engels' Educational Thought Research in China
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作者 Xiaodan Wang Zhuoyuan Zhang 《Journal of Contemporary Educational Research》 2020年第12期56-59,共4页
The study of Marx and Engels'educational thought has experienced different stages in China,different stages show different characteristics,and has made some progress in the aspects of“human nature”,“all-round d... The study of Marx and Engels'educational thought has experienced different stages in China,different stages show different characteristics,and has made some progress in the aspects of“human nature”,“all-round development of human beings”,“the combination of education and productive labor”,“the relationship between education and various social phenomena”,and“the thought of moral education”.Looking forward to the future,the study of Marx and Engels'educational thought in China should be further carried out:the depth of text research,the strengthening of academic research,the emphasis of method research and the deepening of cross-research. 展开更多
关键词 Marx and engels Educational Thought China
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On the Terms "Common Ownership," "SocialOwnership," and "Individual Ownership" Used in the Writings of Marx and Engels
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作者 李光远 《Social Sciences in China》 1996年第2期48-53,192,共7页
关键词 Used in the Writings of Marx and engels Individual Ownership On the Terms SocialOwnership Common Ownership
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A Twofold Perspective on Research on Marx and Engels' Classic Texts
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作者 陈先达 Kang Xiaoni 《Social Sciences in China》 2015年第3期5-19,共15页
Study of the classic texts of Marx and Engels should employ two perspectives: Marxist philosophical history and Marxist philosophical principles. The two cannot be separated, still less contradictory. In dealing crea... Study of the classic texts of Marx and Engels should employ two perspectives: Marxist philosophical history and Marxist philosophical principles. The two cannot be separated, still less contradictory. In dealing creatively with these classic works, we must firmly uphold the methodology of historical materialism, read them in accordance with the authors' original intentions and approach them creatively. We need to oppose research styles that place undue emphasis on the researcher's own interpretations and constructions. Research on Marxist philosophy should develop on the basis of respect, study and correct understanding of Marx and Engels' classic works; different readings of these texts must not be allowed to construct a pluralist Marxism. This is of great importance for consolidating the leading position of Marxism in the sphere of ideology. 展开更多
关键词 classic works of Marx and engels history of Marxist philosophy principles of Marxist philosophy historical materialism
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关于变积的研究 被引量:1
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作者 陈海波 丁光涛 许雪艳 《动力学与控制学报》 2016年第6期492-495,共4页
研究变分法逆问题中变积概念及其计算方法.由变积直接构造的是与加速度相关的Lagrange函数,再通过规范变换可以得到位形空间中的Lagrange函数.这表明这种构造Lagrange函数的方法与Engels方法一致.
关键词 变分法 逆问题 LAGRANGE函数 变积 engels方法
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温柔的巨人 Bruce Engel访谈录
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作者 Bruce Engel 《室内设计与装修》 2025年第10期95-97,共3页
id+c:请介绍一下您的工作团队,以及BE_Design事务所的愿景。此外,您在卢旺达的一些学生后来也成了BE_Design的员工,请问,作为建筑师兼教育工作者,您如何看待这种师生关系在专业实践中的转化?这种经历对您的设计团队文化产生了什么影响?B... id+c:请介绍一下您的工作团队,以及BE_Design事务所的愿景。此外,您在卢旺达的一些学生后来也成了BE_Design的员工,请问,作为建筑师兼教育工作者,您如何看待这种师生关系在专业实践中的转化?这种经历对您的设计团队文化产生了什么影响?Bruce Engel:我是BE_Design的创始人兼负责人,公司在美国纽约和卢旺达基加利均设有办公室。我们的业务主要在东非和纽约地区,因为这些地方都跟我有着深厚的情感纽带。我在纽约出生、长大,之后,于2010—2016年旅居卢旺达,其间我参与了多个非盈利项目,并在当地一所大学任教。这段经历让卢旺达成了我的第二故乡,以至于即使回到美国,我仍然常常返回那里。而我团队的一些成员目前也常驻在那里,负责公司在当地的项目。 展开更多
关键词 BE_Design事务所 Bruce Engel
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Jordan李代数的分解与Frattini理论 被引量:5
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作者 温启军 钱玲 陈良云 《东北师大学报(自然科学版)》 CAS CSCD 北大核心 2010年第4期12-16,共5页
证明了中心为零的Jordan李代数能够分解成不可分解理想的直和,这种分解在不计理想次序的前提下是唯一的,并运用Jordan李代数的Engel定理,得到了Jordan李代数的Frattini子代数的若干性质和幂零Jordan李代数的几个判定方法.
关键词 Jordan李代数 Engel定理 分解唯一性 Frattini理论
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应用Engel模式审视住院患者失眠发生因素的研究进展 被引量:6
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作者 王丽娜 赵岳 周郁秋 《护士进修杂志》 北大核心 2010年第24期2238-2241,共4页
关键词 Engel模式 住院患者 失眠 影响因素
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Jordan李代数的Engel定理及其应用 被引量:4
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作者 钱玲 周佳 陈良云 《数学年刊(A辑)》 CSCD 北大核心 2012年第5期517-526,共10页
证明了有限维Jordan李代数的Engel定理,并应用它得到了Jordan李代数的Cartan子代数的若干性质.
关键词 Jordan李代数 Engel定理 CARTAN子代数 幂零性
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Engel定理及其应用 被引量:5
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作者 吴险峰 陈良云 《东北师大学报(自然科学版)》 CAS CSCD 北大核心 2009年第4期5-8,共4页
给出了李超代数Engel定理的一种证明,运用Engel定理,Fitting分解及Frattini理论等得到了幂零李超代数的5个充分必要条件.
关键词 幂零李超代数 Engel定理 Fitting分解 Frattini理论
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低温液相合成Engel复盐晶体研究 被引量:1
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作者 张文辉 张茜 +1 位作者 谷守玉 万亚珍 《人工晶体学报》 EI CAS CSCD 北大核心 2013年第4期567-571,共5页
Engel复盐晶体合成对于准确绘制Engel复盐相图及指导实际生产有重要意义。论文研究了低温条件下液相合成Engel复盐晶体的适宜条件,即碳酸氢钾饱和溶液中加入碱式碳酸镁,其重量比39.0 g/0.2 g,在40℃下水热反应10 min;然后反应溶液从40... Engel复盐晶体合成对于准确绘制Engel复盐相图及指导实际生产有重要意义。论文研究了低温条件下液相合成Engel复盐晶体的适宜条件,即碳酸氢钾饱和溶液中加入碱式碳酸镁,其重量比39.0 g/0.2 g,在40℃下水热反应10 min;然后反应溶液从40℃冷却降温到25℃进行析晶,析晶过程持续约7.0 h,制备出Engel复盐晶体;对产物进行了XRD及晶体形貌分析,其衍射峰与标准图谱一致,晶体形貌规则,结晶良好。 展开更多
关键词 Engel复盐晶体 低温液相合成 合成条件
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生物反馈训练与排便障碍性疾病 被引量:5
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作者 丁曙晴 丁义江 《中国临床医生杂志》 2008年第4期20-21,共2页
关键词 排便障碍性疾病 生物反馈训练 生物反馈疗法 肛门失禁 Engel 复治疗 行为医学 身心疾病
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一类广义李代数的Engel定理 被引量:2
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作者 王圣祥 董丽红 《东北师大学报(自然科学版)》 CAS CSCD 北大核心 2013年第4期36-40,共5页
研究了表示范畴H M中李代数(即广义R-李代数)的表示,证明了广义R-李代数的Engel定理:设L是一个广义R-李代数,如果L的每一个循环H-子模都是ad-幂零的,那么L是幂零的.
关键词 Engel定理 表示范畴 三角Hop{代数 广义R-李代数
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一类特殊的有限p-群 被引量:2
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作者 吕恒 陈贵云 《东北师大学报(自然科学版)》 CAS CSCD 北大核心 2007年第2期19-21,共3页
探讨了一类特殊的有限p-群,即对任意x,y∈G,如果[x,y]≠1,那么〈x,y〉—G.主要证明了:如果满足这样条件的有限p-群G=〈x1,x2,…,xn〉,其中对任意x∈G,〈x〉G是交换群或者内交换群.
关键词 局部幂零群 Engel群 内交换群
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金属价的确定方法 被引量:3
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作者 李小波 张平 《材料导报》 EI CAS CSCD 北大核心 2010年第3期102-107,共6页
按照"键中取价"的思路,综述了金属中各种键价理论的本质和方法。Pauling金属价键理论从综合性能来定价,建立了共价电子与键长的关系式;Engel-Brewer金属价键理论从键合能来确定价态;Hume-Rothery电子浓度理论从化合物的结构... 按照"键中取价"的思路,综述了金属中各种键价理论的本质和方法。Pauling金属价键理论从综合性能来定价,建立了共价电子与键长的关系式;Engel-Brewer金属价键理论从键合能来确定价态;Hume-Rothery电子浓度理论从化合物的结构来定价;余瑞璜的固体与分子经验电子理论从键距差来定价电子结构;谢佑卿的单原子理论从"能"和"形"来定价电子结构。每种理论从不同方面阐述对金属价的理解。 展开更多
关键词 键价理论Pauling Engel—Brewer Hume-Rothery固体与分子经验电子理论单原子理论
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Ultrastructural Study on Development of Needle Resin Ducts in Pinus elliottii Engel. 被引量:1
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作者 郭惠红 李凤兰 高述民 《Forestry Studies in China》 CAS 2002年第2期68-72,共5页
The development of needle resin ducts of Pinus elliottii was studied using electron microscope. The results indicate that the resin duct development encompasses at least three distinctive development stages: the s... The development of needle resin ducts of Pinus elliottii was studied using electron microscope. The results indicate that the resin duct development encompasses at least three distinctive development stages: the stage of initial cells, the stage of middle lamellae expansion and intercellular space appearance, and the stage of cavity enlargement and the resin duct formation. During the whole development stages, all kinds of organells in the duct cells show different ultrastructural features and regularity, among them the plastids' changing is the most striking one. On the basis of analysing the ultrastructural features of developing resin duct cells, the pattern of duct cavity formation, possible sites of resin synthesis, the manner and way of the resin elimination from the protoplast are discussed. 展开更多
关键词 Pinus elliottii Engel. resin duct DEVELOPMENT ULTRASTRUCTURE
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