DNA计算中编码问题的研究

编码是DNA计算的开始,对DNA计算尤为的重要。编码的好坏直接影响计算反应过程的质量。本文简要描述了DNA编码的理论,总结了编码的约束条件和几个模型的DNA序列的设计。最后,指出了编码问题的研究方向。     

DNA计算技术进展

论述DNA计算技术进展。先介绍DNA计算的基本原理,论述DNA计算的特点方法和存在的问题,接着介绍DNA计算的国内外研究现状,最后指出DNA计算研究中需要解决的问题。     

DNA计算的应用与展望

DNA 计算机是当前研究的热点问题，我国的研究刚刚起步，本文详细论述了DNA序列的概念及性质，DNA计算的原理，同时介绍了DNA计算的研究进展概况。     

基于DNA计算的图像模板匹配算法

针对已有的图像匹配算法都是在小规模基础上的统计识别方法,均是串行运算,对样本的训练和目标识别都须进行大量复杂的运算,难以适应大规模图像比对的问题,利用DNA计算强大的并行性,提出了一种基于DNA计算的图像模板匹配算法.首先,将二进制的图像信号编码为满足一系列约束并允许一定非特异性杂交的DNA序列;然后,通过DNA退火反应得到匹配问题的解;最后,利用这一算法得出的128个单链DNA编码进行了数字图像模板匹配的仿真实验.仿真结果表明DNA计算应用于大规模图像匹配问题是可行的.     

DNA计算问题的研究进展

DNA计算是近十年发展起来的一门新学科,目前的研究已经取得了很大的进展.本文首先介绍了DNA计算的机理,然后说明了DNA分子的结构及DNA计算的特点.最后分析了目前DNA计算所存在的问题,并展望了DNA计算的应用发展前景.     

DNA计算原理与发展

DNA计算是一种摸拟生物分子DNA的结构并借助分子生物技术进行计算的新方法,为NP完全问题的解决提供了一种全新的途径,具有广阔的应用前景。本文首先介绍了DNA计算的基本思想;然后综述了DNA算例及其模型;指出了DNA计算的应用及目前存在的问题;最后对DNA计算的发展前景进行展望。     

DNA计算研究现状

随着科学技术的飞速发展,人们对计算机性能提升的需求愈发迫切.然而,传统的基于硅的计算机性能几乎已经达到了极限,很难再实现大的提升.DNA计算凭借其出色的并行处理能力,巨大的数据存储量以及运行的低能耗在目前计算技术领域受到极高的关注,成为了研究的重点.文章介绍了 DNA计算近几年的最新研究成果,重点阐述了 DNA逻辑电路...     

DNA计算方法与应用

简要介绍DNA计算产生的历史背景,结合图论例子（邮递员路线图）叙述DNA计算的基本概念与计算模型等方面内容。     

A membrane evolutionary algorithm for DNA sequence design in DNA computing

DNA sequence design has a crucial role in successful DNA computation,which has been proved to be an NP-hard(non-deterministic polynomial-time hard) problem.In this paper,a membrane evolutionary algorithm is proposed for the DNA sequence design problem.The results of computer experiments are reported,in which the new algorithm is validated and out-performs certain known evolutionary algorithms for the DNA sequence design problem.     

Molecular logic computing model based on self-assembly of DNA nanoparticles

In this paper, a logic computing model was constructed using a DNA nanoparticle, combined with color change technology of DNA/Au nanoparticle conjugates, and DNA computing. Several important technologies are utilized in this molecular computing model: DNA self-assembly, DNA/Au nanoparticle conjugation, and the color change resulting from Au nanoparticle aggregation. The simple logic computing model was realized by a color change, resulting from changing of DNA self-assembly. Based on this computing model, a set of operations computing model was also established, by which a simple logic problem was solved. To enlarge the applications of this logic nanocomputing system, a molecular detection method was developed for H1N1 virus gene detection.     

DNA计算机

脱氧核糖核酸（简称DNA）是生物体内的一种具有双螺旋结构的遗传物质,用DNA可以进行运算,即构成的DNA计算机能很快地求解复杂的问题;以DNA编码为信息的载体,DNA计算机中的输入和输出设备都是DNA的,链用一系列二进制的数代表所求问题中的变量,用DNA中特有的寡核苷酸序列表示这些二进制的数,再将DNA利用分子生物和化学组装技术组装到芯片上,利用DNA杂交化学方法,排除各种代表不正确解的寡核苷酸序列,最后通过聚合酶链式反应（PCR）和各种检测技术读出保留在芯片上的DNA序列,读出的DNA序列所代表的二进制数即为所求问题的解,本文将从DNA运算过程入手,介绍DNA计算机的原理和DNA计算机的若干最新研究进展。     

DNA computing model based on lab-on-a-chip and its application on solving the timetabling problem

The essential characteristic of DNA computation is its massive parallelism in obtaining and managing information. With the develop- ment of molecular biology technique, the field of DNA computation has made a great progress. By using an advanced biochip technique, laboratory-on-a-chip, a new DNA computing model is presented in the paper to solve a simple timetabling problem, which is a special version of the optimization problems. It also plays an important role in education and other industries. With a simulated biological experiment, the result snggested that DNA comnutation with lab-on-a-chin has the notential to solve a real comtplex timetabling problem.     

DNA计算的粘贴模型及在组合优化中的应用

讨论了分子计算的一种新的模型——粘贴模型。它使用DNA串作为底物来进行信息表达,杂交分离作为控制机制。粘贴模型有一个可随机访问的存储空间,而不需要DNA串的延伸,也无需用酶,并且它的材料是可重复使用的。     

DNA computing model based on lab-on-a-chip and its application to solving the timetabling problem

The essential characteristic of DNA computation is its massive parallelism in obtaining and managing information.With the development of molecular biology technique,the field of DNA computation has made a great progress.By using an advanced biochip technique,laboratory-on-a-chip,a new DNA computing model is presented in the paper to solve a simple timetabling problem,which is a special version ofthe optimization problems.It also plays an important role in education and other industries.With a simulated biological experiment,the result suggested that DNA computation with lab-on-a-chip has the potential to solve a real complex timetabling problem.     

图的最小顶点覆盖问题的质粒DNA计算模型

给出了图的最小顶点覆盖问题的质粒DNA算模型及其实现算法．算法的时间复杂性是O(q),编码最小覆盖问题所需的核苷酸片段种类为n,其中n,q分别是图的规模和边数．在算法中,所用酶的种类也等于图的规模．而且,算法不需要复杂的单链DNA自身退火反应和PCR扩增．     

安全的基于网络的计算机系统

为了解决日益严重的局域网安全问题,提出了一种安全的基于网络的计算机系统模型。该模型以透明计算机系统为基础,利用透明计算技术对计算机内部的安全问题进行控制。针对网络内主机间的安全问题,采用星型拓扑结构,在网络的中心位置引入监控器设备,监控系统中各个部件之间的通信过程,以实现对主机与服务器之间、主机之间及主机与外网之间的通信数据过滤和动态物理隔离,提高了系统的安全性。理论分析表明:该系统可有效地解决网络安全问题,从而为局域网提供了可靠的安全保证。     

Development of Trusted Computing Research

0 IntroductionWiththe development of informationtechnology,infor-mation market gives all-ti me thriving appearance;theother side,the attack events increased, which have affectednational security and social stabilization. Under the situation,trusted computing (TC) is required.Current trusted computing is to adding the concept oftrust to information society. Through the current technolo-gies ,the trust society would be established and informationsecurity would bei mproved.In technical fields ,…