离散模糊报童问题的符号距离法及其在旅游时令产品中的应用

针对离散模糊数,基于LR型模糊数符号距离思想,给出了离散符号距离定义作为新的离散模糊数反模糊化手段,并具体描述了其表征方式。面对离散模糊市场需求的报童问题,构建了相应的模型,并以离散符号距离反模糊化法给出了其具体求解步骤。解析分析及数值分析均表明,该反模糊化方法是有效的。

CDMA符号离散扩频技术(英文)

提出了一种可以在多径环境下消除CDMA多址干扰的新扩频方案。在同步发射条件下 ,该方法在多径环境下保持了多用户码的正交性 ,因此完全消除了多址干扰。而各自用户的信息符号可通过解方程的方法从多径叠加信号中分离得到。仿真结果表明该方法可以在保持系统信息吞吐量不变的条件下 ,降低误码率。另外 ,还对带宽效率进行了讨论。

基于众源数据的铀矿地质知识建模研究

众源数据本质是指网络世界中存在大量、复杂、有潜力的“垃圾”数据,采用有效方法与技术将这类感兴趣数据进行收集并利用,是文章的研究中心。文章引入互联网前沿技术,运用知识图谱对众源数据的知识进行抽取。在知识图谱中,知识描述措施旨在利用一种低维稀疏的向量表示方法来高效地发现特殊实体、关系之间内在语义关系,这在知识问答、信息检索等应用场景有着重要实用意义。但是,现有为数不少的知识描述措施忽视了铀资源场景要素,如缺失随场景变更的铀矿知识。针对该领域的矛盾,文章创建了基于离散向量的众源数据建模方法。该方法将核电站场景信息以差异的水平融入到不同类型的实体向量中,而后挖掘每个实体相关的众源数据知识语义联系。文章描述了知识体现的原理知识,然后提出了利用传统的人工智能方法构建众源数据,接着采用了当前受到认可的语义网及开放知识建模方法来进一步论证众源数据的知识表达的可行性。最后利用全球铀矿地质知识建模案例测试显示,这种基于实体离散向量的表示措施可以显著满足知识图谱的铀资源场景补全和铀矿地质预测研究的需求。

The Trinity Triangle and the Homonymy of the Word ＂Is＂ in Natural Language

There are philosophers and logicians who do think that the Trinity-triangle makes up an evident formal-logic inconsistency demonstrating convincingly that Christian faith is illogical and hence irrational one. The present paper submits a systematic counter-argumentation against such thinking. According to the submitted counter-arguments, there is no formal-logic inconsistency in the Holy-Trinity-triangle： There is only a logic-linguistic illusion of such inconsistency which illusion is naturally produced by the ambiguity of the word ＂is＂ in natural language. The author has invented an effective remedy for that illusion, namely, a precise formulation of the generalized and thus modernized Guillotine of Hume by means of an artificial language of two-valued algebraic system of formal ethics of moral rigor. Systematical using the mathematized formulation of the generalized Hume＇s Guillotine cuts down the mentioned linguistic illusion of logical inconsistency. Thus, the paper essentially interconnects discrete mathematical representations of formal iogic of thinking and formal ethics of acting. In relation to contemporary symbolic logic, the author submits not a technical result solving some important particular problem concerning some specific system of symbolic logic but a significantly new result of conceptual work concerning logic in general and its interconnection with mathematical ethics. The old idea of logic as a moral science is transformed into a novel idea of symbolic logic as a brunch of mathematical ethics. In particular, two-valued algebra of classical formal logic is considered as a particular case of two-valued algebra of formal ethics of moral rigor. The submitted conception of logic is instantiated by applying it to the knotty logic-problem of Holy-Trinity-triangle.

Function Projective Synchronization of Discrete-Time Chaotic and Hyperchaotic Systems Using Backstepping Method

In this paper, a function projective synchronization scheme is developed to investigate the function projective synchronization between the discrete-time driven chaotic system and the discrete-time response chaotic system. With the aid of symbolic-numeric computation, we use the scheme to study the function projective synchronization between 2D Lorenz discrete-time system and Hdnon discrete-time system, as well as that between 3D discrete-time hyperchaotic system and Henon-like map via three scalar controllers, respectively. Moreover numerical simulations are used to verify the effectiveness of the proposed scheme.

New Families of Rational Form Variable Separation Solutions to(2+1)-Dimensional Dispersive Long Wave Equations

With the aid of symbolic computation system Maple, some families of new rational variable separation solutions of the （2＋1）-dimensional dispersive long wave equations are constructed by means of a function transformation, improved mapping approach, and variable separation approach, among which there are rational solitary wave solutions, periodic wave solutions and rational wave solutions.

地图易读性度量公式的改进

分析了原地图易读性度量公式在反映易读因素发生微小变化时的灵敏度不高的缺陷后,修改了点线符号差异函数式、面状域差异函数式和层面反差函数式的幂指数,使幂指数由1/3改为1/4,实现了提高公式反映地图易读因素微小变化灵敏度的目的。

MINIMAL INVERSION AND ITS ALGORITHMS OF DISCRETE-TIME NONLINEAR SYSTEMS

The left-inverse system with minimal order and its algorithms of discrete-time nonlinear systems are studied in a linear algebraic framework. The general structure of left-inverse system is described and computed in symbolic algorithm. Two algorithms are given for constructing left-inverse systems with minimal order.