DNA介导的限制性发光猝灭模型及其演化计算

导出了普适性的ＤＮＡ介导的限制性发光猝灭方程：Ｉ０／Ｉ＝ａ／［１＋ｅｘｐ（ｂ－ＫＬＱＱ）］．提出了表观猝灭常数ＫＬＱ，最大猝灭量ａ和半猝灭量Ｑ１／２等概念．将高度智能化的演化计算技术引入了配合物与ＤＮＡ作用的研究中，并用ＬＱ方程对５个发光猝灭体系进行了演化优化．计算结果十分理想     

MATLAB在数值计算方法教学中的应用

结合教学实践,给出了MATLAB在计算方法教学中应用的实例,把图形演示、符号运算、工具箱等应用到计算方法课的教学中,在激发学生主动性和积极性的同时,有效地提高了课堂教学效果.     

对《用图解快速定限法确定卷积的积分限》的扩展讨论

对《用图解快速定限法确定卷积的积分限》在无限长有值函数卷积积分区间的图解分段中出现的±∞的取舍情况进行了分类和讨论,对无限长有值函数卷积的图解定限方法进行了总结,并举例说明了其使用方法.     

量子算法与量子计算实验

本文介绍了量子计算纠缠和量子比特的基本概念,系统阐述了几种主要的量子算法:Shor算法———大数质因子分解的量子算法;Grover搜索———无序数据库的搜索;Hogg搜索———高度结构化搜索。在对量子计算基本理论和量子算法有一定认识的基础上,进一步介绍了在量子计算实验方面起重要作用的二种体系:核磁共振、腔与原子体系。     

Nonlinear model predictive control with guaraneed stability based on pesudolinear neural networks

A nonlinear model predictive control problem based on pseudo-linear neural network (PNN) is discussed, in which the second order on-line optimization method is adopted. The recursive computation of Jacobian matrix is investigated. The stability of the closed loop model predictive control system is analyzed based on Lyapunov theory to obtain the sufficient condition for the asymptotical stability of the neural predictive control system. A simulation was carried out for an exothermic first-order reaction in a continuous stirred tank reactor. It is demonstrated that the proposed control strategy is applicable to some of nonlinear systems.     

聚能射流数值模拟中的几项关键技术

聚能射流形成的数值模拟,涉及到大变形、高应变率以及材料的破坏,传统的拉格朗日或欧拉方法在解决该问题均有很大的局限性,先后发展了网格重分、ALE、SPH等方法,以及界面处理技术,各有所长,但尚未完全解决,而在实际工作中,切合实际的药型罩介质本构关系则是聚能射流数值模拟的关键,高效并行计算与可视化则是聚能射流数值模拟的必由之路,并阐述了聚能射流数值模拟的发展趋势．     

A numerical analysis to the non-linear fin problem

In this paper a numerical analysis is carried out to obtain the temperature distribution within a single fin. It is assumed that the heat transfer coefficient depends on the temperature. The complete highly non-linear problem is solved numerically and the variations of both, dimensionless surface temperature and dimensionless surface temperature gradient as well as heat transfer characteristics with the governing non-dimensional parameters of the problem are graphed and tabulated.     

基于函数S-粗集的Bellman原理优化算法在知识测度的应用

应用函数双向S-粗集理论实现参考模式和测试模式的动态模式匹配．用Bellman原理的动态规划算法实现全局约束定义下的Levenstein距离的计算,以此确定出参考模式和测试模式的距离测度,有明显降低计算复杂度的效果,并以无纸考试系统非标准化试题的智能评分为例进行说明。     

Numerical simulation of a direct internal reforming solid oxide fuel cell using computational fluid dynamics method

A detailed mathematical model of a direct internal reforming solid oxide fuel cell （DIR-SOFC） incorporating with simulation of chemical and physical processes in the fuel cell is presented. The model is developed based on the reforming and electrochemical reaction mechanisms, mass and energy conservation, and heat transfer. A computational fluid dynamics （CFD） method is used for solving the complicated multiple partial differential equations （PDEs） to obtain the numerical approximations. The resulting distributions of chemical species concentrations, temperature and current density in a cross-flow DIR-SOFC are given and analyzed in detail. Further, the influence between distributions of chemical species concentrations, temperature and current density during the simulation is illustrated and discussed. The heat and mass transfer, and the kinetics of reforming and electrochemical reactions have significant effects on the parameter distributions within the cell. The results show the particular characteristics of the DIR-SOFC among fuel cells, and can aid in stack design and control.     

多拍卖物的无收据密封式电子拍卖协议

使用秘密分享的方法来构造多拍卖物的电子拍卖协议 ,并按照电子拍卖协议应该满足的各种性质对提出的协议进行了分析 .相对于适用于单拍卖物的电子拍卖协议 ,适用于多拍卖物的电子拍卖协议具有更广泛的用途 .提出的协议具有“无收据”的性质 ,可以更好地保护竞拍者的隐私 .