A novel fuzzy clustering algorithm for the analysis of axillary lymph node tissue sections

Recently Fourier Transform Infrared (FTIR) spectroscopic imaging has been used as a tool to detect the changes in cellular composition that may reflect the onset of a disease. This approach has been investigated as a mean of monitoring the change of the biochemical composition of cells and providing a diagnostic tool for various human cancers and other diseases. The discrimination between different types of tissue based upon spectroscopic data is often achieved using various multivariate clustering techniques. However, the number of clusters is a common unknown feature for the clustering methods, such as hierarchical cluster analysis, k-means and fuzzy c-means. In this study, we apply a FCM based clustering algorithm to obtain the best number of clusters as given by the minimum validity index value. This often results in an excessive number of clusters being created due to the complexity of this biochemical system. A novel method to automatically merge clusters was developed to try to address this problem. Three lymph node tissue sections were examined to evaluate our new method. These results showed that this approach can merge the clusters which have similar biochemistry. Consequently, the overall algorithm automatically identifies clusters that accurately match the main tissue types that are independently determined by the clinician.     

卫星广播调度的鲁棒生长方法

本文提出基于果蝇刚毛分化自组织机理的卫星广播调度新方法，该方法生长出了这种问题的优化解。为增加自组织计算的鲁棒性引入了随机竞争排序技术，对不同大小问题的计算测试表明该方法能快速一致地产生有好的结果。     

一种实用的数值型伪Hash函数排序方法

本文给出一种具有实用价值的数值型伪Ｈａｓｈ函数排序方法。该方法通过尽量避免比较而直接计算定位的方式提高排序速度。测试结果表明：该算法的排序时间好于比较式排序的代表性算法Ｑｕｉｃｋｓｏｒｔ，Ｓｈｅｌｌｓｏｒｔ。与现有算法相比，该算法简洁，灵活，易于实现，适合于某些应用领域的特殊需求。     

Networks for sorting multitonic sequences

Lee and Batcher have designed networks that efficiently merge k separately provided sorted sequences of known lengths totalling n. We show that the design is still possible, and in fact easier to describe, if we do not make use of the lengths, or even the directions of monotonicity, of the individual sequences—the sequences can be provided in a single undelimited concatenation of length n. The depth of the simplest resulting network to sort sequences that are “k-tonic” and of length n is , generalizing Batcher's 1968 results for the extreme values of k (k=2 corresponding to merging, and k=n/2 corresponding to general sorting).The exposition is self-contained and can serve even as an introduction to sorting networks and Batcher's results.     

Image segmentation towards new image representation methods

Very low bit-rate video coding has recently become one of the most important areas of image communication and a large variety of applications have already been identified. Since conventional approaches are reaching a saturation point, in terms of coding efficiency, a new generation of video coding techniques, aiming at a deeper “understanding” of the image, is being studied. In this context, image analysis, particularly the identification of objects or regions in images (segmentation), is a very important step. This paper describes a segmentation algorithm based on split and merge. Images are first simplified using mathematical morphology operators, which eliminate perceptually less relevant details. The simplified image is then split according to a quad tree structure and the resulting regions are finally merged in three steps: merge, elimination of small regions and control of the number of regions.     

行为优化提升软件配置管理

软件配置管理包括对代码、文档、数据等的管理,其优劣受限于项目成员的实际操作。开发人员对于工作区如何使用;成员之间的代码是不是可以及时更新与同步;怎样使用分支,如何进行变更合并,才能减少物理空间浪费和事件延迟。这些问题在实际的项目开发中往往被忽视,亦或团队并没有对成员行为作细节的规范,因而许多软件项目出现了工期推迟或代码质量不高等问题。为此提出了一系列管理措施,通过优化软件配置管理规范项目各成员的行为,以保证高效的软件配置管理的实施。     

基于WiFi的无线语音接收终端设计

针对目前的语音调度系统存在实时性差、需要布设大量电缆等问题,设计了一种基于WiFi的无线语音接收终端。该语音接收终端工作时,无线收发模块GS1011接收来自无线网络的数据帧,STM32微控制器以中断方式将接收到的数据放入环形缓存区中,当环形缓存区数据大于播放阈值,STM32微控制器从环形缓存区中读取语音数据并通过音频编解码模块VS1053解码播放。同时,该语音接收终端采用RTP协议结合环形缓存及动态调整语音回放速率的措施来消除网络抖动现象。测试结果表明,该语音接收终端响应时间不到1s,语音信号稳定,消除了网络抖动带来的影响。     

用Word邮件合并功能套打固定格式的毕业证书

邮件合并是Word提供的一种非常重要的实用功能,如能巧妙应用将大大减轻工作量。本文通过毕业证书的套打,根据Word邮件合并功能和Excel函数域功能,以解决问题的思路为顺序,论述了毕业证书套打设计工作的方法和步骤,详细介绍了邮件合并的使用,对实现批量打印非常有用。     

基于分水岭和区域合并的图像分割算法*

提出一种应用分水岭与区域合并相结合的图像分割算法.本方法首先利用数学形态学分水岭算法对图像进行分割,然后对分割后的图像进行相似区域合并,以减少分水岭方法产生的过分割现象,从而得到较好的分割效果.     

文献搜索引擎中特征项及权重的应用

针对目前用户在使用搜索引擎过程中,检索结果冗余、效率低下等问题,本文在对文献垂直搜索系统中Lucene.Net的索引算法研究基础上,结合用户实际专业检索需求,改变其算法中的激励因子,实验结果证明该方法确能提高搜索结果的相关度.