The World Wide Web has been an environment with many security threats and lots of reported cases of security breaches. Various tools and techniques have been applied in trying to curb this problem, however new attacks...The World Wide Web has been an environment with many security threats and lots of reported cases of security breaches. Various tools and techniques have been applied in trying to curb this problem, however new attacks continue to plague the Internet. We discuss risks that affect web applications and explain how network-centric and host-centric techniques, as much as they are crucial in an enterprise, lack necessary depth to comprehensively analyze overall application security. The nature of web applications to span a number of servers introduces a new dimension of security requirement that calls for a holistic approach to protect the information asset regardless of its physical or logical separation of modules and tiers. We therefore classify security mechanisms as either infrastructure-centric or application-centric based on what asset is being secured. We then describe requirements for such application-centric security mechanisms.展开更多
该文介绍了一种应用于电机故障监测的振动信号采集系统。针对所用数据采集卡的配套软件使用复杂、功能不足等问题,在Windows系统Visual Studio 2019开发环境下,基于C#语言和采集卡的API函数,重新开发采集卡上位机软件,实现了对电机振动...该文介绍了一种应用于电机故障监测的振动信号采集系统。针对所用数据采集卡的配套软件使用复杂、功能不足等问题,在Windows系统Visual Studio 2019开发环境下,基于C#语言和采集卡的API函数,重新开发采集卡上位机软件,实现了对电机振动信号的采样、波形显示、数据存储,以及在高速采集模式下的信号异常报警功能。通过电机振动信号采集试验,对软件的相关功能进行测试,证明该软件功能正常,运行稳定,性能较好,满足电机故障监测的需求。展开更多
文摘The World Wide Web has been an environment with many security threats and lots of reported cases of security breaches. Various tools and techniques have been applied in trying to curb this problem, however new attacks continue to plague the Internet. We discuss risks that affect web applications and explain how network-centric and host-centric techniques, as much as they are crucial in an enterprise, lack necessary depth to comprehensively analyze overall application security. The nature of web applications to span a number of servers introduces a new dimension of security requirement that calls for a holistic approach to protect the information asset regardless of its physical or logical separation of modules and tiers. We therefore classify security mechanisms as either infrastructure-centric or application-centric based on what asset is being secured. We then describe requirements for such application-centric security mechanisms.
文摘该文介绍了一种应用于电机故障监测的振动信号采集系统。针对所用数据采集卡的配套软件使用复杂、功能不足等问题,在Windows系统Visual Studio 2019开发环境下,基于C#语言和采集卡的API函数,重新开发采集卡上位机软件,实现了对电机振动信号的采样、波形显示、数据存储,以及在高速采集模式下的信号异常报警功能。通过电机振动信号采集试验,对软件的相关功能进行测试,证明该软件功能正常,运行稳定,性能较好,满足电机故障监测的需求。
