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求一类非光滑规划全局极小点的改进的填充函数法   总被引:1,自引:0,他引:1  
考虑优化问题minx∈ΩF(x) ,针对F(x)为局部Lipschitz函数 ,本文引入了求解该优化问题的一类改进的单参数填充函数 ,给出了相应的算法和收敛估计 ,理论分析和数值结果表明该方法是行之有效的  相似文献
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二类油层高含水开发后期优化补孔措施挖潜剩余油研究   总被引:1,自引:1,他引:0  
根据大庆油田采油二厂提供的动、静态数据,用数值模拟方法,分析了其南八区西块二类油层的剩余油分布.针对其剩余油的挖潜设计了注水时机、注水强度、注水时机和注水强度优化三套30个补孔方案,优化结果是:注水强度9最好,注水时机含水93%最好,注水强度9和注水时机93%结合优化效果最好.  相似文献
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采用四自由度车辆模型,以Gauss平稳随机过程模拟路面的不平整度,编制程序得到不同路面等级下的不平整度序列;并将车辆和道路看作一个相互作用的整体系统,建立了车辆-道路耦合系统的动力平衡方程在对车辆施加随机激励时,为了简化分析过程,避开以往研究中使用随机振动理论求解动轮胎力的复杂性,将得到的路面不平整度序列,直接以向量的形式输入到所建立的动力平衡方程中.基于增量形式的Newmark-β法开发了一个MATLAB程序对该方程进行求解,并对所提出的理论模型进行了试验验证,证明了模型的可靠性.随后,通过一个实例,分析了车速变化、路面等级变化对车辆动荷载系数和车体垂向加速度的影响.最后,对不同路基刚度对车辆振动特性的影响规律进行了探讨.  相似文献
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In this paper,we study a class of soluble Lie algebras with variety relations that the commutator of m and n is zero.The aim of the paper is to consider the relationship between the Lie algebra L with ...  相似文献
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证明例1中的DG代数不仅是Koszul,同调光滑DG代数,而且还是一个Calabi-Yau DG代数.该例子说明一个Calabi-Yau DG代数的同调分次代数不一定具有Calabi-Yau性质,甚至可能不是同调光滑的;另外,该例子还说明一个Calabi-Yau DG代数忘掉微分后得到的分次代数不一定是分次Calabi-Yau代数.  相似文献
6.
Genetic evolutionary algorithms are effective and optimal test generation methods. However, the methods to select the algorithm parameters are often ad hoc, relying on empirical data. We used a Markov-based method to model the genetic evolutionary test generation process, parameterise the process characteristics, and derive analytical solutions for selecting the optimisation parameters. The method eliminates preliminary test generation calibration and experimentation effort needed to select these parameters, which are used in current practice.  相似文献
7.
In this paper,necessary and sufficient conditions concerning the orthogonality and the composition of a couple of generalized (θ,φ)-derivations on a nonzero ideal of a semiprime ring are presented.These results are generalizations of several results of Breˇsar and Vukman,which are related to a theorem of Posner on the product of two derivations on a prime ring.  相似文献
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This paper presents a distance invariant manifold that preserves the neighborhood relations among data patterns. All patterns have their corresponding cells in the manifold space. The constellation of neighborhood cells closely resembles that of patterns. The manifold is invariant under the translation, rotation and scale of the pattern coordinates. The neighborhood relations among cells are adjusted and improved in each iteration according to the reduction of the distance preservation energy.  相似文献
9.
In this paper,necessary and sufficient conditions concerning the orthogonality and the composition of a couple of generalized (θ,φ)-derivations on a nonzero ideal of a semiprime ring are presented.These results are generalizations of several results of Breˇsar and Vukman,which are related to a theorem of Posner on the product of two derivations on a prime ring.  相似文献
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