software and system design

应用背景Xpdf runs under the X Window System on UNIX, VMS, and OS/2. The non-X components (pdftops, pdftotext, etc.) also run on Win32 systems and should run on pretty much any system with a decent C++ compiler.关键技术Xpdf is an open source viewer for Portable Document Format (PDF) files. (These are also sometimes also called "Acrobat" files, from the name of Adobe"s PDF software.) The Xpdf project also includes a PDF text extractor, PDF-to-PostScript converter, and various other utilities.

这个一篇进行自动文本分类技术研究的好文章，很不错-text category

人牙髓来源的干细胞（hDPSCs）已经被认为是成体干的替代来源由于它们的潜在细胞分化成多种细胞谱系。神经节苷脂，其中唾液酸含酸鞘糖脂是大量表达于细胞膜并起着重要的在各种处理，如增殖和分化的作用。这项研究调查可能发挥的作用神经节苷脂多巴胺能神经元的分化。当hDPSCs正在多巴胺能神经培养分化的条件下，多巴胺能神经细胞标记物基因如TH，Pitx-3的表达，Nurr-1，和DAT进行检测。免疫荧光分析表明，神经节苷脂的生物合成是与hDPSCs的多巴胺能神经元分化有关。具体来说，GD3和GT1b人在多巴胺能神经元的分化表现。这些结果表明，神经节苷脂可以发挥作用在hDPSCs的多巴胺能神经分化过程。

GPS专业词语说明-GPS professional terms note

串口通信基本接线方法-basic wiring methods

本ppt介绍了多层C/S型数据库应用，多层数据库应用的结构，典型的三层C/S结构，B/S型数据库应用，典型的B/S结构（三层），结合三层C/S的B/S结构（四层），使用多层分布式应用结构的优势，高可靠性的多层分布式结构等方面的内容-ppt of the multi-storey C/S database application, the multilayer structure of the database application, the typical three-tier C/S, B/S database application, a typical B/S (three), the combination of the three-tier C/S B/S structure (four), the use of multi-storey structure of the distributed application advantages, high reliability distributed multi-storey structure of the content

计算机网络（清华版第四版）习题答案。全部详细答案-Computer Networks (fourth edition Tsinghua) Exercise the answer. Full details of the answer

来自COM经验的八个教训-COM experience from the eight lessons

这是国际标准化组织的defcon的CD分布均匀！美国 -This is the International Organization for Standardization defcon distribution of the CD! USA

计算机故障速查手册.pdf-64400 Check manual. Pdf