大鳞副泥鳅7个群体遗传变异的微卫星分析

利用泥鳅(Misgurnus anguillicaudatus)的微卫星引物跨种扩增大鳞副泥鳅(Paramisgurnus dabryanus),通过家系扩增、PCR产物测序筛选出6个座位,用于大鳞副泥鳅7个野生群体的遗传结构分析。结果显示,群体的平均等位基因数在3.167～4.833,平均观测杂合度(Ho)在0.248～0.417,平均期望杂合度(He)在0.379～0.505,多个座位存在零等位基因、杂合子缺失现象,显示大鳞副泥鳅种群遗传多样性较低。采用UPGMA法对7个群体基于DA遗传距离进行聚类,可分为4类,位于长江中下游的沙市、澧县、武汉、鄱阳湖群体先聚为一类,后与石首群体聚类,最后与珠江水系的广州群体聚类,而位于长江上游的泸州群体则单独聚为一类。群体的F-统计量(Fst)为0.2987,表明群体间存在显著的遗传分化,主要由泸州群体与其它地区群体间的遗传分化引起

Study on the column of the "Dialogue"

2000年7月，中央电视台经济部（经济频道）开播了一档名为《对话》的栏目，它所展现的“智”的视界为我们呈现了一餐思想心灵交融的文化盛宴。《对话》发展到现在已有十年历史，它反映了时代精英、商界弄潮儿的人生经验和人性光辉，分享了经济建设的成就，思考了经济领域的前沿问题，体现了一个电视栏目对社会群体的人文关怀，值得同类栏目借鉴。 由此，本文试从节目的内容、形式进行分析，具体阐释《对话》节目这一谈话节目的各个要素的独特性。同时，分析《对话》节目对经济类谈话节目的探索与创新，目的在于从中提取有借鉴意义的经验和规律。 本文共用了五个部分对《对话》栏目进行了全方位的研究： 第一部分为绪论，主要介绍了本...July 2000, CCTV, Ministry of Economic Affairs (now the Economic Channel) launched the program named The Dialogue. The program shows cultural sharing which combine spiritual thinking and heart in its vision of “wisdom. It vowed to "give a flying thought the sky," so that the elite of the times that we appreciate the business and human beach-goers brilliant life experience, to share the achievements...学位：文学硕士院系专业：新闻传播学院新闻学系_新闻学学号：3062007115241

Visualization Research on Simulation Experiment System

本课题是计算机技术在化学上的应用,属于交叉型课题。它是针对某些特定化学实验以及现有模拟实验系统的缺陷提出来的。研究且实现了这些特定化学实验的网上模拟系统,并且可以与处在不同空间的人进行协作完成实验,实现远程合作功能,弥补了传统模拟实验的空间限制性。主要创新点是:在模拟化学实验的同时还要做到远程通信,使操作者不用局限在同一个空间内同样也能完成实验操作。开发过程用到几个关键技术:远程连接;数据通信及其同步处理;消息设定;图片的组合及其显示。It's an interdisciplinary subject between chemistry and computer technologies.It's raised for some special chemistry experiments and the drawback of existing simulation experiment systems.Here is a research on the simulation system of some special chemistry experiments in the internet,in which moreover people in different place can team up with each other to complete these experiments.That is,effecting this system with remote collaboration function too,which makes up the drawback of existing simulation experiment systems.It's main creative idea is: using computer to simulate chemistry experiments and more important to achieve long-distance communication.Some key technologies in the whole developing process are: remote linking;data communication and synchronization processing;message setting;image combining and showing.国家863计划项目(2006AA01Z129);国家重点基础研究发展计划(973计划)(2007CB311005);厦门大学985二期信息创新平台项

Numerical study on suspended sediment concentration in Jiulong Estuary-Xiamen Bay and sediment transport mechanism in tidal inlets with multi-fork

基于环境流体动力学模型(Environment Fluid Dynamic Code/EFDC)水动力和泥沙模块,该文针对九龙江口-厦门湾水域潮动力强、浅滩面积大的特点建立二维潮流泥沙数学模型并利用实测数据进行校验。模型精简适用,成功反演了该水域的水动力场和悬沙浓度场,并能正确反映浅水区域的水沙运动特征。结果表明:在潮流作用下,厦门湾水体中悬沙浓度由外向内递增,悬沙随着潮流的涨落在湾内外作中-长距离的往复运动。湾内特别是浅滩区,大潮期悬沙浓度大于小潮期且浓度随潮变化明显,小潮期悬沙场则较为稳定。采用抓斗式挖泥船(源强Q=7.5 t/h)在翔安东南侧浅滩疏浚作业对邻近保护区基本无影响,但翔安南部"五岔口"型潮汐汊道存在能远程输运近岸疏浚泥沙的"泥泵式"水动力场,促使形成环绕厦门岛东海域的带状悬沙分布,该文进一步揭示了形成该分布的水动力机制。增大疏浚强度可导致白海豚保护区被污染,悬沙带宽度增大,浓度上升。Based on hydrodynamic and sediment transport module of Environment Fluid Dynamic Code/EFDC, a 2-Dimensional mathematical model was applied to the simulation of tidal current and sediment transport in Jiulong Estuary-Xiamen Bay, which was set up with full consideration of the strong tide and large-area shoal in the study area. The model was calibrated and verified using observational data and the simulation results agreed with measured data well, which successfully re-acted the hydrodynamic field and suspended sediment transport in this area, including that of the shoal area. The research shows that, mainly controlled by tidal current, suspended sediment concentration(SSC) increases progressively from outside to inside of Xiamen Bay and suspended sediments move forth and back as tidal currents flow rectilinearly along channels. Inside the bay, especially in shoal area, SSC in spring season fluctuates tidally and is much higher than that in neap season which remains lower and more stable. Dredging in the shoal area positioned to the south east of Xiang'an using grab dredger with source strength of 7.5 t/h almost has no effect on the adjacent protection zone, however, the water area with five-forks positioned to the south of Xiang'an exists a dredge-pump-like hydrodynamic field, through which dredging-produced sediments can be transported in long distance. The special hydrodynamic field leads to the formation of ribbon-pattern distribution of suspended sediments located in the eastern waters of Xiamen island and the hydrodynamic mechanism of it is revealed. Amplifying dredging intensity can result in the pollution of White Dolphin Protection Zone, broadening of ribbon-pattern distribution and increasing of the SSC.国家自然科学基金项目(41406121)~

Scene Classification Based on Global Optimized Framework

提出一种基于全局优化策略的场景分类算法.该算法基于整幅图像提取全局场景特征——空间包络特征.从图像块中提取视觉单词,且定义隐变量表示该视觉单词语义,然后引入隐状态结构图描述整幅图像的视觉单词上下文;在场景分类策略上,构造由相容函数组成的目标函数,其中相容函数度量全局场景特征、隐变量与场景类别标记的相容度,通过求解目标函数的全局最优解推断图像的场景类别标记.在标准场景图像库上的对比实验表明该算法优于当前有代表性的场景分类算法.A scene classification algorithm based on global optimized framework is proposed.Firstly, the global scene feature named spatial envelop is obtained from the whole image, the visual word of each image block is extracted, and latent variable is defined to represent the semantic feature of the extracted visual word.Secondly, the structure graph of latent state is introduced to represent the context of visual words.In respect to scene classification strategy, objective function consisting of different potential functions is constructed in which potential functions are defined to measure the relevance of the variables including global scene feature, latent variables and scene category.Finally, the scene category of the image is determined when the global optimized solution of objective function is obtained.The experiments on the standard dataset demonstrate that the proposed algorithm achieves better results than the state-of-the-art algorithms.国家自然科学基金项目(No.41171341); 航空科学基金项目(No.20125168001); 教育部新世纪优秀人才支持计划项目(No.NCET-09-0126); 教育部博士点基金项目(No.20110121110020); 河南省科技创新人才杰出青年项目(No.114100510006); 福建省自然科学基金项目(No.2011J01365); 郑州市科技创新人才培育计划项目(No.10PTGG342-1)资

高校普通仪器网络化管理系统的开发与实践

厦门大学化学化工学院针对普通仪器设备开发了一套的仪器动态管理系统,实现了仪器设备相关数据的录入、维护、查询和统计等功能。该系统实现了网络化管理,并在各个实验室中的推广使用,运行状况良好,提高了实验室的服务水平和管理效率

Approach to Building Recognition

论文提出了一种在复杂场景图像中识别建筑物目标的方法。提取图像的短线段特征,将目标识别转化为最大后验概率估计问题,并利用贝叶斯理论将先验知识引入到识别过程中。利用概率分布表示模板特征在匹配过程的不确定性,反映了目标在被遮挡条件下,不匹配的模板特征分布聚集的现象。利用高斯分布表示图像特征的不确定性。最终给出一个评判分数判断图像中存在建筑物目标的区域。实验表明:给出的评判分数能在一定程度上排除图像中虚假目标,识别出真正目标。This paper presents a new approach to recognize object of building in complex scenes.It extracts a set of line segments,and turns object recognition into maximum a posteriori estimation.The prior knowledge can be incorporated into target identification process by using Bayesian theory.A distribution is proposed to model the uncertainty of model features,which captures phenomena such as the fact that the unmatched features due to partial occlusion are generally spatially correlated rather than independent.Fluctuations of matched image features are modeled by Gauss distribution.Finally,a score is proposed to evaluate the region of image,where buildings may exist.Experiments on the natural image sets demonstrated that the proposed score to a certain extent can differentiate between the true object and the false object in complex scenes.国家创新研究群体资助项目(60024301);; 国家自然科学基金资助项目(60175008);; 厦门大学985二期信息创新平台项目资

自然图像中建筑目标提取算法

提出了一种从复杂场景图像中提取建筑目标的算法.首先采用对手惩罚竞争学习方法改进基于图论超像素算法的分割粒度,得到分割效果较好的图像块;然后选择基于空间包络模式的支持向量机对图像块进行分类,区分出图像中的建筑图像块与非建筑图像块;最后通过建筑目标的结构特征验证图像中的候选建筑,提取出图像中建筑目标.在标准图像库进行的实验表明:本算法提取建筑目标的能力优于同类算法,并且满足一般应用的实时性要求

Approach to building extracti on based on two-way fusion mechanism

摘要: 模拟人类视觉中有意识主动寻找与无意识被动受吸引相交互的视觉过程,提出了一种基于双向融合机制的建筑目标检测方法。该方法综合了基于自底向上数据驱动的视觉显著性模式和自顶向下基于环境感知的目标搜索模式检测图像中的建筑目标区域。利用拍摄的自然图像进行实验表明:该方法能较好地检测出图像中的建筑目标,具有处理速度快、 准确性高的特点,能够满足处理复杂场景图像的实时性要求。 Abstract: This paper p roposed an app roach called two-way fusion mechanism, which detected the interested building in the image . it imitated the detecti on p rocess of human vision, in which searching subjectively and being attracted objectively happened at the same ti me . Thr ough the bottom-up methodswhich utilized visual salience model and the t op2 down methods based on envir onmental percep ti on technol ogy, the regions where building existweremarked in the image . Experiment on natural images validates that thismechanism has competitive accuracy in building detecti on in comp lex scene and favorable s peed, and satisfies the requirement of processing the natural image .基金项目: 国家创新研究群体资助项目( 60024301 ) ; 国家自然科学基金资助项目(60175008);厦门大学“985” 二期信息创新平台资助项

Super-resolution Image Reconstruction Algorithm Based on Sub-pixel Shift

针对多帧图像超分辨率重建问题,利用一阶泰勒展式,在亚像素级上对图像退化过程进行建模,并建立极小化能量函数,选择grAPH-CuT算法进行能量极小化求解.为了验证本文算法的有效性,采用模拟图像退化过程和直接用相机拍摄两种方式获得低分辨率图像序列.从4x4倍重建结果的比较来看,本文算法不仅对模拟退化过程产生的低分辨率图像序列有效,而且在提高真实低分辨率图像的分辨能力方面也有很好的效果.此外,实验结果表明本文算法对噪声有较好的抗干扰能力.This paper studies the problem of multi-frame image super-resolution reconstruction.The process of image degradation is modeled by using the first-order Taylor expansion based on sub-pixel.Then the energy minimization function is established and the graph-cut algorithm is chosen to solve the energy minimization.In order to confirm this algorithm, we obtain the low resolution images by two ways: simulating image degradation and taking photos.By comparing the 4 × 4 times reconstruction results, it is shown that this algorithm is valid not only for simulation of low resolution images but also for real images.Besides, experimental results show that this algorithm possesses good anti-interference ability of noise.国家自然科学基金(61373077); 国防基础科研计划(B0110155); 国防科技重点实验室基金(9140C30211ZS8); 高等学校博士学科点专项科研基金(20110121110020); 福建省自然科学基金(2011J01365); 福建省重点项目(2014H0034); 航空科学基金(20125168001); 黄慧贞集美大学学科建设基金(ZC2014010)资助~