Remote Sensing Image Enhancement Based on Orthogonal Wavelet Transformation and Pseudo-color Image Processing

针对基于正交小波分析的图像增强技术一般只适用于黑白图像;而伪彩色处理技术不能够充分处理图像中某些细节信息的缺陷,提出了基于正交小波分析和伪彩色的遥感图像增强处理方法;实验结果表明,增强后的遥感图像无论在视觉效果上还是在噪声特性上都有了很大的改善;该方法简便易行且计算量小,在应用中有较大的灵活性;该方法还具有运算速度快和可操作性强等特点,在遥感图像增强研究方面具有广泛的应用前景。Image enhancement technique based on wavelet analysis is only applicable to black-and-white image,and pseudo-color image processing technology can not adequately deal with some of the details information of the image.In this paper,enhancement approach of remote sensing image based on orthogonal wavelet analysis and pseudo-color image processing is put forward.Enhanced remote sensing image have been greatly improved in both visual effects and noise characteristics.The method is simple to implement,and need less calculation,and its application is more flexible.This method also has the characteristics of faster computing speed and operating feasibly and so on.It has broad application prospects in research of remote sensing image enhancement.国家自然科学基金项目(60873179);广西教育厅科研项目(200707LX196

Classification of Panax Quinquefolium.L Samples by Cluster Analysis

建立西洋参药材分类方法;分别采用电感耦合等离子体质谱(ICP-MS)法、高效液相色谱(HPLC)法以及蒽酮-硫酸分光光度法,对12个西洋参样品中的15种无机元素、7种人参皂苷和多糖进行测定,用SPSS聚类分析法对12个西洋参样品进行聚类分析;结果表明:以4种不同的聚类变量进行聚类分析,其聚类分组结果并不一致,将几种有效成分综合为聚类变量,对西洋参进行分类更为科学合理;聚类分析法是西洋参分类分析的有效方法,对西洋参品种与质量的鉴定有一定的理论意义和实用价值。A classification method was developed for the quality assessment of Panax Quinquefolium.L.The contents of fifteen elements,seven ginsenosides and polysaccharide in twelve Panax Quinquefolium.L samples were determined by ICP-MS,HPLC and anthrone-sulfuric acid spectrophotometry,respectively.The cluster analysis was applied for the classification of 12 Panax Quinquefolium.L samples.The analysis results showed that the classified results were different with different cluster variables and it was found more reasonable to integrate several active components as cluster variables for the classification.The cluster analysis was useful for the classification of Panax Quinquefolium.L

Design of Carrier Synchronization Based on Costas Loop

介绍了平方变换法相干解调原理,从工程角度完善了载波提取的电路结构,消除了频移载波的误锁问题.提出用科斯塔斯环法来实现从2dPSk信号中提取相干载波,解决了提取的载波信号存在180度的相位含糊问题,为通信系统提高抗噪性能提供了条件.当载波频率很高时,工作频率较低的科斯塔斯环易于实现.并用SIMulInk设计出科斯塔斯环法提取载波的仿真电路图和进行相应的仿真实验.Theory of coherent demodulation based on method of square counterchange is introduced in this article.The structure of circuit for carrier recovery is perfected in engineering,and the problem of error-lock for frequency-shift carrier is eliminated.Costas Loop is put forward to achieve coherent carrier from 2DPSK signal in this article.The 180° phase's inexplicit problem which exist in carrier recovery is resolved.It improves the resisting noise property of communication system.When carrier frequency is higher,Costas loop is easy to implement carrier synchronization.Because the operating frequency of Costas loop is lower than square PLL.We scheme out emulational circuit diagram for carrier distilling with Costas loop by using simulink and process corresponding emulational experiment.国家自然科学基金项目(60873179);广西教育厅科研项目(200707LX196

Compressed Storage for C-Temporal Relation Data Model Based on Improved Genetic Algorithm

针对时态数据库中存在数据冗余、数据量快速增长等问题,结合现有压缩技术,提出基于改进遗传算法的C-TrdM压缩存储技术。将各个时刻的时态关系数据分解为最小粒度的数据并进行编码,采用改进的遗传算法来计算待压缩数据中的最优存储数据以提高压缩比。算法的快速收敛性使去除数据冗余的速度得到提高。There is data redundancy temporal database and the quantities of temporal database are increasing fleetly,aiming at these problems,this paper puts forward compressed storage tactics based on improved genetic algorithm for temporal data which combine compress technology in existence in order to settle data redundancy in the course of temporal data storage.Temporal relation data at any moment is decomposed into least granularity data and be coded meanwhile.Optimized storage data are figured out by using improved genetic algorithm,and the ratio of compression is enhanced.Celerity astringency of the algorithm can heighten speed of removing data redundancy largely.广西教育厅科研基金资助项目(200707LX196);广西工学院自然科学基金资助项目(院科自0704102

High efficient and secure group key management scheme based on optimized GDH

针对gdH(grOuP dIffIE-HEllMAn)方案中节点可能成为系统的瓶颈以及计算复杂度、通信代价和存储复杂度远高于某些集中式方案等缺陷,提出并实现了一种基于优化gdH协商的高效安全的动态群组密钥管理方案,并对其安全性进行了证明。通过对计算量和通信量进行分析比较表明,优化gdH协商协议具有很大的优势,并且能够快速产生或更新组密钥,具有很强的实用性。There are some defects in GDH(group diffie-hellman) scheme,such as the node that may become the bottleneck of the system,and the computational complexity,cost of communications and storage complexity that are much higher than some centralized group key management program.An efficient and secure dynamic group key management scheme based on optimized GDH is proposed and implemented and its security is proven.The optimized GDH consensus agreement has great advantage than GDH by comparing and analysing the volume of calculating and traffic.At the same time,the optimized GDH consensus agreement can quickly produce and update group key,and it owns highly practicability.国家自然科学基金资助项目(60873179);广西教育厅科研资助项目(200707LX196

A quickly-speed running watermarking algorithm based on quantum evolutionary algorithm

针对传统基于人类视觉系统特性的空间域与变换域相结合的水印算法中嵌入信息量小、嵌入位置定位及检测准确率低和算法运行速度慢等缺陷,提出并实现一种基于量子进化算法(QEA)的快速水印新算法。仿真实验结果表明,新算法不仅生成水印图像的速度快,而且对各种攻击具有良好的敏感性和鲁棒性。新算法在应用中有较大的灵活性,并且具有可嵌入信息容量大、运算速度快和可操作性强等特点。There are limitations such as smaller embedded information capacity,lower accurate rate for positioning embedded location and detection and slower running speed in traditional watermarking algorithm which combines spatial domain and transform domain based on characteristics of human visual system.A quickly-speed running watermarking algorithm based on quantum evolutionary algorithm is proposed and implemented.The simulation results show that the proposed algorithm owns not only faster watermark image generation,but also have good sensitivity and robustness for all kinds of attacks.The proposed algorithm is more flexible in application,and it can embed more information and improve the computing speed.The method can be easily operated.国家自然科学基金资助项目(60873179);广西教育厅科研资助项目(200707LX196

早期湿疹婴儿的气质特征研究

目的研究早期湿疹婴儿气质因子水平与分型特征，为湿疹婴儿的早期干预提供依据。方法采用1：2配比的回顾性病例对照研究，应用国内标化的小婴儿气质问卷（EITQ），对1月龄湿疹婴儿56例及112例正常婴儿进行气质因子水平及气质类型测评并比较。结果湿疹组与对照组气质类型总体分布比较，湿疹组男婴D型和I-D型明显高于对照组，E型和I-E型显著低于对照组（P＜0.001）；气质维度的单因素条件Logistic回归分析显示婴儿湿疹气质的影响因素有婴儿活动水平、节律性、适应性和反应强度四个维度（P＜0.05）；进一步气质维度的多因素条件Logistic回归分析（向后法）显示，适应性和反应强度两个维度为独立影响因素，湿疹组婴儿适应性较强、反应强度较弱。结论早期湿疹婴儿适应性较强、反应强度较弱，应根据其气质特征进行早期干预

文化「台」風意味著什麼？-「台客文化」的社會想像與認同形構

近年來，台灣社會當中掀起了一股「台客文化」熱潮，不但有越來越多人以「台客」自稱，亦有「台客」為名的書籍出版、以「台客」為名的活動舉辦，形成了一股文化「台」風，本文探究「台客文化」之社會想像的形成及其文化意義。 「台客」這個詞彙最早起自於50年代，外省人嘲笑講國語不標準的本省人是「台客」，近年來則又在青少年次文化場域中興起，指著穿著打扮很俗氣、不入流的人，多半帶有鄙視的意味。不過，2005年八月，歌手伍佰、陳昇等人舉辦「台客搖滾」演唱會，翻轉「台客」一詞原來的負面意涵，將「台客」視為一種「驕傲的認同」，聲言「在台灣，人人都是台客」、「台客就是台灣的文化」，帶動了社會中「以台客為榮」的「新台客」論述，以「台灣特色」形成「台客文化」的想像軸心，使得檳榔西施、歌手伍佰的搖滾樂、傳統的布袋戲……等均接合進入「台客文化」的想像中，形成了一股「台客文藝復興運動」。不同於當前「台客」的研究多半將「台客」的意義固定、本質化的處理，在觀察的取徑上，本文採用拉克勞與慕芙(Laclau&Mouffe)霸權／論述理論中的「空符徵」(empty signifier)概念作為切入此一現象的理論與方法，考察「台客」一詞意義流變的論述軌跡，如何從一個狹義的風格指稱，逐漸擴大成了一個促動關於「我們台灣」之文化共同體的想像的符號。 本文以為，使得「台客」擴大成為代表「我們台灣」的空符徵之所以可能，乃在於「新台客」論述將「台客」建構為一種得以與美、日、韓與之抗衡、代表我們台灣特色的文化想像，吸納了台灣社會流行文化語境當中長期以來始終處於哈韓、哈日、哈美而獨缺哈台的文化認同焦慮情緒以及隨之期望「哈台」的文化民族主義文化主體慾望，成為文化全球化衝擊之下，一種「本土化」力量的抗衡與反撲。另一方面，本文也發現，在「人人都是台客」、「台客就是台灣文化」這樣文化共同體的光明號召論述下，看似「眾聲喧嘩」的「台客文化」想像之中，仍有一個「主音」是被明顯合唱的——那麼便是將在過去國民黨語言政策下所壓制的遭到禁制的台語歌、布袋戲、歌仔戲，在這一波「新台客」論述中以「台客」之名重新被歡呼，一方面是針對「舊台客」論述當中的語言歧視問題藉著「新台客」的意義重整進行象徵鬥爭，另一方面亦顯露了「台客文化」的形構力量，除了相對於「全球化」的「本土化」意識之外，亦顯露了與「中國」相對的「本土化」力量，在兩種「本土化」的交錯張力之中，開啟了通俗文化場域當中「台灣性」(Taiwaness)的想像起點