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弗雷格·索绪尔·函式
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作者 徐劲松 《北方论丛》 北大核心 2007年第1期70-73,共4页
从弗雷格的函数思想和索绪尔的句段关系与联想关系出发,综合他们的论述并作进一步的思考就可以发现语言的纯函式结构。这种函式结构是语言的一个基本特征。它使对语言的理解进入到一个“无之用”深层境域。并且,它以一种具体的方式体现... 从弗雷格的函数思想和索绪尔的句段关系与联想关系出发,综合他们的论述并作进一步的思考就可以发现语言的纯函式结构。这种函式结构是语言的一个基本特征。它使对语言的理解进入到一个“无之用”深层境域。并且,它以一种具体的方式体现了“易”的精神。同时还在可能性与现实性、确定性与不确定性、一与多、同与异等多个方面达到了统一。 展开更多
关键词 弗雷格 索绪尔 语言 函式结构
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Implicit modeling of complex orebody with constraints of geological rules 被引量:14
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作者 De-yun ZHONG Li-guan WANG +1 位作者 Lin BI Ming-tao JIA 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2019年第11期2392-2399,共8页
To dynamically update the shape of orebody according to the knowledge of a structural geologist’s insight,an approach of orebody implicit modeling from raw drillhole data using the generalized radial basis function i... To dynamically update the shape of orebody according to the knowledge of a structural geologist’s insight,an approach of orebody implicit modeling from raw drillhole data using the generalized radial basis function interpolant was presented.A variety of constraint rules,including geology trend line,geology constraint line,geology trend surface,geology constraint surface and anisotropy,which can be converted into interpolation constraints,were developed to dynamically control the geology trends.Combined with the interactive tools of constraint rules,this method can avoid the shortcomings of the explicit modeling method based on the contour stitching,such as poor model quality,and is difficult to update dynamically,and simplify the modeling process of orebody.The results of numerical experiments show that the 3D ore body model can be reconstructed quickly,accurately and dynamically by the implicit modeling method. 展开更多
关键词 three-dimensional geomodeling implicit modeling radial basis function structural anisotropy geological rules
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A Method of Clustering Components into Modules Based on Products' Functional and Structural Analysis 被引量:1
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作者 孟祥慧 蒋祖华 郑迎飞 《Journal of Shanghai Jiaotong university(Science)》 EI 2006年第3期279-285,共7页
Modularity is the key to improving the cost-variety trade-off in product development. To achieve the functional independency and structural independency of modules, a method of clustering components to identify module... Modularity is the key to improving the cost-variety trade-off in product development. To achieve the functional independency and structural independency of modules, a method of clustering components to identify modules based on functional and structural analysis was presented. Two stages were included in the method. In the first stage the products’ function was analyzed to determine the primary level of modules. Then the objective function for modules identifying was formulated to achieve functional independency of modules. Finally the genetic algorithm was used to solve the combinatorial optimization problem in modules identifying to form the primary modules of products. In the second stage the cohesion degree of modules and the coupling degree between modules were analyzed. Based on this structural analysis the modular scheme was refined according to the thinking of structural independency. A case study on the gear reducer was conducted to illustrate the validity of the presented method. 展开更多
关键词 module identifying CLUSTERING functional independency structural independency genetic algorithm1
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Linux-based Platform for Open Architecture Controller and Its Modular Developing Method
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作者 迟永琳 王宇晗 +1 位作者 吴祖育 蔡建国 《Journal of Donghua University(English Edition)》 EI CAS 2003年第2期107-111,共5页
Linux-based Platform for Open Architecture Controller ( POAC ), a new open architecture controller and its modular developing method are discussed. POAC divides the application software of controller into the developi... Linux-based Platform for Open Architecture Controller ( POAC ), a new open architecture controller and its modular developing method are discussed. POAC divides the application software of controller into the developing system and the application system. In the developing system, PAOC abstracts a series of function modules with unified data interface and function interface. In the application system, POAC defines the model of the architecture module, realizing the interoperability and interchangeability between the architecture modules. The modular developing method entities the users to make up an application system with some architecture modules, which consist of a set of function modules. The modular developing method decreases the developing time from the standard of controller architecture to the product. 展开更多
关键词 Open architecture controller Function Module Architecture Modules Modular developing method
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Associations in the Two-Nucleon Transfer Reactions
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作者 Sajida G. Abdulvahabova Rasim A. Ahmedov Irada G. Afandiyeva 《Journal of Physical Science and Application》 2015年第2期158-162,共5页
On the basis of the association theory of nuclear structure, we have studied the (t, p) reaction. Study was carried out with the distorted plane waves of triton and of proton. It has been suggested that bineutron as... On the basis of the association theory of nuclear structure, we have studied the (t, p) reaction. Study was carried out with the distorted plane waves of triton and of proton. It has been suggested that bineutron association is acceptable if the time during which the association maintains its structure, is large compared with the time when neutrons are in a dissociated form, and there is no exchange of nucleons between fragments associations. The cross section is written as a product of two factors, one is the spectroscopic factor which reflects the nature of the nuclear structure concerned and the other describes the process in which the target nucleus captures two nucleons as a cluster into an orbit which is characterized by a form factor. In the argument, that the radial wave function of two neutrons which form association captured nuclei close to each other, this leads to the formation of bineutron association on the nuclei surface. In this approach, the proton is emitted at the same point, which is captured bineutron association. 展开更多
关键词 SCATTERING matrix element nucleon association two-nucleon transfers cross section.
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A hexahedron element formulation with a new multi-resolution analysis 被引量:1
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作者 XIA YiMing CHEN ShaoLin 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2015年第1期65-74,共10页
A multiresolution hexahedron element is presented with a new multiresolution analysis(MRA)framework.The MRA framework is formulated out of a mutually nesting displacement subspace sequence,whose basis functions are co... A multiresolution hexahedron element is presented with a new multiresolution analysis(MRA)framework.The MRA framework is formulated out of a mutually nesting displacement subspace sequence,whose basis functions are constructed of scaling and shifting on element domain of a basic node shape function.The basic node shape function is constructed from shifting to other seven quadrants around a specific node of a basic isoparametric element in one quadrant and joining the corresponding node shape functions of eight elements at the specific node.The MRA endows the proposed element with the resolution level(RL)to adjust structural analysis accuracy.As a result,the traditional 8-node hexahedron element is a monoresolution one and also a special case of the proposed element.The meshing for the monoresolution finite element model is based on the empiricism while the RL adjusting for the multiresolution is laid on the solid mathematical basis.The simplicity and clarity of shape function construction with the Kronecker delta property and the rational MRA enable the proposed element method to be more rational,easier and efficient in its implementation than the conventional mono-resolution solid element method or other MRA methods.The multiresolution hexahedron element method is more adapted to dealing with the accurate computation of structural problems. 展开更多
关键词 hexahedron element multiresolution analysis (MRA) resolution level (RL) basic node shape function mutually nesting displacement subspace sequence scaling and shifting
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