基于TCP和IP协议的网络数据报标识方案设计

介绍了当前几种基于TCP和IP协议的信息隐藏方法,并提出了新的信息隐藏的方法。介绍了NDIS中间层网络驱动程序的设计与实现方法。在此基础上设计并实现了一个基于TCP和IP协议字段的网络数据报标识方案。实验证明,方案正确、有效。     

WINDOWS设备驱动程序研究

阐述了Windows下WDM设备驱动程度的原理，并详细分析了在Windows环境下WDM设备驱动程度的设计方法。     

TA10绘图机AutoCAD驱动程序的开发

通过研究分析 Auto CAD所形成的 PLT文件的格式 ,并与 TA10绘图机的有关技术指标和绘图指令对照 ,建立二者相互转换的数学模型和程序框图 ,利用高级语言完成了程序设计 ,从而达到使 Auto CAD能够驱动 TA10绘图机绘图的目的。     

基于NDIS-HOOK技术的个人防火墙的研究与实现

介绍了NDIS系统结构以及在Windows 2000/NT下NDIS-HOOK的原理,并给出了一个基于NDIS-HOOK技术的个人防火墙驱动程序--Packet.sys.利用该驱动程序,可方便地实现基于Windows的个人防火墙.     

Deforestation Trends and Spatial Modelling of its Drivers in the Dry Temperate Forests of Northern Pakistan–A Case Study of Chitral

Deforestation is a major environmental challenge in the mountain areas of Pakistan. The study assessed trends in the forest cover in Chitral tehsil over the last two decades using supervised land cover classification of Landsat TM satellite images from 1992, 2000, and 2009, with a maximum likelihood algorithm. In 2009, the forest cover was 10.3% of the land area of Chitral(60,000 ha). The deforestation rate increased from 0.14% per annum in 1992–2000 to 0.54% per annum in 2000–2009, with 3,759 ha forest lost over the 17 years. The spatial drivers of deforestation were investigated using a cellular automaton modelling technique to project future forest conditions. Accessibility(elevation, slope), population density, distance to settlements, and distance to administrative boundary were strongly associated with neighbourhood deforestation. A model projection showed a further loss of 23% of existing forest in Chitral tehsil by 2030, and degradation of 8%, if deforestation continues at the present rate. Arandu Union Council, with 2212 households, will lose 85% of its forest. Local communities have limited income resources and high poverty and are heavily dependent on non-timber forest products for their livelihoods. Continued deforestation will further worsen their livelihood conditions, thus improved conservation efforts are essential.     

ISDN多媒体卡拨号上网的研究与设计

研究在已实现可视通信的ISDN多媒体卡上，通过芯片的功能复用，设计一个驱动程序模型，以实现ISDN多媒体卡的拨号上网功能。简要介绍了ISDN接入因特网的通信协议体系，详细探讨了ISDND信道的呼叫过程，分析了拨号上网原理有如何与Widnows系统的远程访问服务结构相结合。给出了一个基于NDIS标准的ISDN多媒体卡的小端口驱动程序的设计与实现方案。     

DYYZ-Ⅱ自动站故障3例

1电脑COM1故障自动站安装后,数据采集器面板显示,自动站数据与人工站观测数据差别细微,数据采集器数据正常,但数据无法导入自动站数据采集软件(软件信号灯SYN保持红色不变)。点击“我的电脑”,查硬件设备,COM1设备上显示黄色问号,重新安装COM1驱动程序,仍然如此。将信号线由COM     

利用Java JDBC进行数据库访问

Java现已成为开发Internet应用最热门的语言,而JDBC则是Java程序访问数据库最重要的技术,这里要介绍了是在WWW环境下,运用JavaJDBC连接数据库的技术,及JDBC的原理和例子。     

浅谈VisualC^＋＋中的ODBC编程技巧

介绍了ＯＤＢＣ相关背景知识,并结合多年来关于数据库及ＯＤＢＣ编程经验,讨论了ＶｉｓａｕｌＣ＾＋＝环境下编写ＯＤＢＣ应用程序的技巧。