摘要：由于周期性边界条件和cooper算法划分网格的需要,在GAMBIT中需要做面链接。为了在用户界面(GUI)中减少设计人员做面链接时的大量手工劳动和重复劳动,为了在文本界面(TUI)中实现面链接自动化,采用自上而下的软件设计方法和journalfile技术,设计了一个面链接自动化的模型。利用该模型对43个叶片的前向多翼离心风扇的面链接进行了测试。结果表明,在用户界面(GUI)中鼠标点击次数从187次减少到7次,大大地提高了设计效率;而在文本界面(TUI)中,实现了自动化面链接。该测试在GAMBIT2.3.16通过,测试结果表明该模型可行且有效。

摘要：With the convergence of high-performance computing(HPC),big data and artificial intelligence(AI),the HPC community is pushing for"triple use"systems to expedite scientific ***,supporting these converged applications on HPC systems presents formidable challenges in terms of storage and data management due to the explosive growth of scientific data and the fundamental differences in I/O characteristics among HPC,big data and AI *** this paper,we discuss the driving force behind the converging trend,highlight three data management challenges,and summarize our efforts in addressing these data management challenges on a typical HPC system at the parallel file system,data management middleware,and user application *** HPC systems are approaching the border of exascale computing,this paper sheds light on how to enable application-driven data management as a preliminary step toward the deep convergence of exascale computing ecosystems,big data,and AI.

摘要：In the era of Big Data, typical architecture of distributed real-time stream processing systems is the combination of Flume, Kafka, and Storm. As a kind of distributed message system, Kafka has the characteristics of horizontal scalability and high throughput, which is manly deployed in many areas in order to address the problem of speed mismatch between message producers and consumers. When using Kafka, we need to quickly receive data sent by producers. In addition, we need to send data to consumers quickly. Therefore, the performance of Kafka is of critical importance to the performance of the whole stream processing system. In this paper, we propose the improved design of real-time stream processing systems, and focus on improving the Kafka's data loading *** use Kafka cat to transfer data from the source to Kafka topic directly, which can reduce the network transmission. We also utilize the memory file system to accelerate the process of data loading, which can address the bottleneck and performance problems caused by disk I/O. Extensive experiments are conducted to evaluate the performance, which show the superiority of our improved design.

摘要：地理标记语言GML(Geography Markup Language)通过对空间数据进行规范化的编码和描述,使得不同平台下的所有用户可以无缝地获取、访问、浏览空间数据,从而实现异构平台之间地理空间信息的互操作与共享。Shapefile文件到GML文件的转化为目前在基层测绘单位大量存储的Shapefile文件实现数据共享提供了一种有效方法。

摘要：针对网格环境下导航地图数据的共享与管理问题,文章提出以多级分区空间索引目录结构为基础的对等导航服务网格体系结构:分析了对等导航服务网格平台实现的关键技术,并基于Globus Toolkit设计实现了对等导航应用服务网格实验平台,提供了全国范围的地图浏览、定位监控、路径分析等服务。实验结果表明该平台能为位置服务应用提供高效的服务。

摘要：1创建一个空白画布打开Photoshop，点选file（文件）菜单〉New（新建）〉Blank file（空白文件）。在对话窗中将文件命名为Canvas，将Width（宽度）设为30厘米，Height（高度）设为21厘米。为了获得较高的打印品质，将Resolution（分辨率）设为300pixels／inch（像素／英寸）。将BackgroundContents（背景）设为White（白色）。点击OK（确定）钮。

摘要：安装软件时,常常不知道软件到底在系统中做了些什么．是不是安装有后门？是不是有广告软件?它们混迹在系统中我们很难发现。但是有了file Monitor这款文件监控软件．一切都好办了。

摘要：专为个人用户所设计的HTTP档案系统——Http file Server，如果您觉得架设FTP Server太麻烦，那么这个软件可以提供您更方便的档案传输系统，下载后无须安装，只要解压缩后执行***，

摘要：最近百度完成了对HadoopHDFS元数据管理（Name Node）的分布式改造工作。在改进过程中，借鉴了很多Ceph的设计思想，所参考的论文是发布在OSD106上的《Ceph：AScalable，High-Performance Distributed file System》。本期以Ceph的分布式元数据管理实现作为引子，全面介绍了GFS、Lustre，HDFS在这方面的实现。