All-ones problem on triangular grids and full binary trees

细胞自动机是一种离散动力系统,它包含了由细胞单元的状态构成的配制以及作用在配制上的传递规则.其数学刻画如下:假设在一个无向图的每个顶点上安装有一个指示灯和一个按钮.如果在该图中按下一个按钮,则它的所有相邻点上的灯将由暗到亮,反之亦然.开始时,所有灯都是暗的.问题是:是否有可能按下一系列的按钮使得最终所有的灯都亮了?该问题被称为全一问题,特别地,若图的每一个点都有一个自环,则它也被称为全一问题,起源于Sutner[29]引入的棋盘上的全一问题,后被Peled[20]称为点灯问题.近年来全一问题已经被广泛的研究,见文Sutner[30,31],Barua和Ramakrishnan[2]以及Dodi...A cellular automaton is discrete dynamical system that consist of an arrangement of basic components called cells together with a transition rule. This system can be mathematically modeled as the following problem: Consider an undirected graph equipped with an indicator light and a button in each of its vertices. If a button is pressed, then the light of all its edge-adjacent vertices will change ...学位：理学硕士院系专业：数学科学学院数学与应用数学系_应用数学学号：X200517001

Research and Implementation of OFDM Underwater Image Transmission System based on ARM and DSP

正交频分复用（OrthogonalFrequencyDivisionMultiplexing，OFDM）技术是一种多载波传输技术，它的基本思想是在频域内将给定信道划分成几个相互正交的子信道，每个子信道使用一个子载波进行调制，各子载波并行传输。该技术可以有效提高频谱利用率，能够对抗多径效应产生的频率选择性衰弱和载波间干扰，在时变、频变、多径干扰严重的水声信道中具有较强的优势。 随着计算机和多媒体通信技术的发展，嵌入式系统在各个领域的应用不断深入。其中，基于ARM技术知识产权（IP）核的微处理器依靠其高性能、低功耗和易扩展的特点，在工业控制、无线通信、消费电子等多个领域得到广泛的应用；随着嵌入式...Orthogonal Frequency Division Multiplexing is a special technology of multicarrier transmission, in which the channel is splitted into several orthogonal channels at different frequencies. The data stream is modulated over a number of sub-carriers and transmitted parallel. The benefits of OFDM are high spectral efficiency, low crosstalk between subcarriers and robustness against frequency selectiv...学位：工学硕士院系专业：信息科学与技术学院电子工程系_电路与系统学号：2005130238

乳酸菌由来DNAの腸管における抗炎症作用に関する研究

福岡大学201