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1.
可拓学与可拓决策   总被引:3,自引:0,他引:3  
讨论了可拓学与可拓决策产生的实际背景,可拓集合与经典集合、模糊集合之间的区别和联系.研究了可拓集合的特点及其可拓决策应用的前景.  相似文献   

2.
大数据及其应用的矛盾问题与可拓学   总被引:1,自引:0,他引:1  
大数据应用面临众多机遇与挑战。本文分析了大数据研究与应用中的矛盾问题,介绍了处理矛盾问题的可拓学及基于可拓学的创新方法;以数据质量的矛盾问题分析为例,本文展示了可拓学处理矛盾问题的思路,探讨、展望了可拓学对大数据应用中矛盾问题处理的支持。  相似文献   

3.
可拓策划是从处理矛盾问题的角度,应用可拓学的方法而进行的策划。文章简介了可拓策划的基本思想、理论和方法,试图用形式化的方法告诉人们,在遇到矛盾问题时,如何生成策划创意,如何进行全面的资源分析、寻找可拓资源,以化不相容为相容,化对立为共存。在可拓策划的实务操作部分,介绍了资源整合的可拓策划、项目的可拓策划、市场开拓的可拓策划及危机防范与处理的可拓策划。  相似文献   

4.
可拓学     
可拓学AnalysisontheElementsofaThing唐旭清(巢湖师范专科学校,安徽巢湖238000)林伟初(解放军广州通信学院,广州510502)可拓学(原称物元分析)的开创性论文“可拓集合和不相容问题”[1]发表后,国内外不少学者参与了...  相似文献   

5.
可拓数学与科学方法论   总被引:1,自引:0,他引:1  
可拓数学是数学的一个新的而又重要的领域,它又是可拓学的理论基础之一,本文论述了可拓数学的科学方法论本质,概述了可拓数学的作用与任务,并基于社会、科学、可拓学自身发展的需求。提出了可拓数学研究应着重注意的若干方向。  相似文献   

6.
简要介绍近年可拓学研究在基础理论方面的新进展,包括可拓学的框架、基元理论、可拓集合理论和可拓逻辑等所取得的成果。  相似文献   

7.
检测技术是目前多种学科的关键技术,检测中有两个难题:一个是无法检测的问题,另一个是检测精度提高的问题。基于可拓学矛盾转化的思想方法,提出了一种与传统检测技术不同的新技术--可拓检测,这种检测技术利用可拓学的物元概念及相关方法,从矛盾转化去研究检测技术,以解决无法检测的物理量检测问题。文章给出了可拓检测的有关概念,基本原理及结构,并且提出了有关的实施方法和应用实例。  相似文献   

8.
多层多维物元系统可拓集及其性质   总被引:2,自引:1,他引:2  
为了研究多层多维复杂系统的矛盾问题,运用可拓学原理,在n维物元可拓集概念的基础上,提出了多层多维物元系统可拓集及其正域、负域、零界的概念,给出了多层多维物元系统可拓集的可拓域、稳定域的定义,讨论了多层多维物元系统可拓集的一些性质.最后研究了多层多维物元系统可拓集的交、并等运算.  相似文献   

9.
 可拓集合从变换的角度描述事物具有某种性质的程度及其变化, 并用关联函数定量化研究变化的分类和分类的变化以及矛盾问题的转化, 因此关联函数是可拓集合的核心内容和可拓学的重要理论基础。基于现实生活中人们对客观事物特征的量值存在满意区间、可接受区间和不可接受区间等区别, 在定义点与三区间套的位置值的概念基础上, 构造了正域为有限区间的三区间套一维关联函数公式并探讨其性质, 深化了一维关联函数的研究内容, 拓展了可拓学描述现实矛盾问题的范围。  相似文献   

10.
目的评述可拓学的基本理论、基本方法、广泛应用与可拓学的未来。方法以发展史为基础,利用历史的、分析与综合的方法进行了论述。结果可拓学是由可拓论、可拓方法和可拓工程组成的。结论可拓学是一门具有巨大价值的、原创性的交叉学科。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

13.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

14.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

15.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

16.
本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。  相似文献   

17.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

18.
19.
The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to  相似文献   

20.
Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with  相似文献   

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