面向对象技术模式之Singleton及其应用

Singleton是面向对象技术中的模式之一,本文试图阐明Singleton模式的功能和用途,描述singleton模式的基本结构和协作关系,并给出实现程序示例,介绍使用此模式的注意点和可能的扩展,与相关模式的异同和与有关模式的配合使用等。

Attractor-Based Simultaneous Design of the Minimum Set of Control Nodes and Controllers in Boolean Networks

Design of control strategies for gene regulatory networks is a challenging and important topic in systems biology. In this paper, the problem of finding both a minimum set of control nodes (control inputs) and a controller is studied. A control node corresponds to a gene that expression can be controlled. Here, a Boolean network is used as a model of gene regulatory networks, and control specifications on attractors, which represent cell types or states of cells, are imposed. It is important to design a gene regulatory network that has desired attractors and has no undesired attractors. Using a matrix-based representation of BNs, this problem can be rewritten as an integer linear programming problem. Finally, the proposed method is demonstrated by a numerical example on a WNT5A network, which is related to melanoma.

谓语动词事件变量的允准研究

事件语义学研究中,学者们普遍认为谓语动词的事件变量受存在量化约束。文章对句子的语义和句子间的语义蕴含关系进行分析后发现:1)动词短语指称独元集时,谓语动词的事件变量实现为特定事件,不受存在量化约束;2)只有当动词短语指称多元集合时,谓语动词的事件变量才受存在量化约束。文章还考察了湘方言中湘阴话的助词'嘚'的存在量化意义,以及它对共现动词短语的语义限制,为上述发现提供了跨语言证据。

关于带有完全对称函数的广义c-数值域

对于c∈Cn和A∈Mn（C），记Hck（A）为A的带有完全对称函数的c－数值域．给出了在复平面上Hck（A）是线段的必要条件和是单点集的充分必要条件．

区间二型模糊逻辑系统非单点模糊化研究

针对传统模糊逻辑系统在描述事物的不确定性方面存在的缺陷,研究了区间二型模糊逻辑系统,详细讨论了区间二型模糊逻辑系统的模糊推理过程.以高斯-高斯函数为例,说明了在非单点模糊化的情况下,输出规则隶属度的计算方法,为区间二型模糊逻辑系统的建立奠定基础。