Reusable Space Planes Challenges And Control Problems

Overcoming the Challenges of Cooperating Control Planes

There are many scenarios where dividing control of a networked system into multiple independent control planes is natural and desirable. For example, inter-domain routing should not require a single centralized control plane, but rather utilize independent control planes, allowing each autonomous system to define policies for their own network. This division of control propelled Internet adopti...

Space Robotics - Guidance, Navigation and Control Challenges

Infection control: old problems and new challenges.

Infection control faces radical changes at the beginning of the third millennium. The first part of this review focuses on problems not yet solved, such as 1) surveillance systems, which should be active and extremely flexible; 2) infection outbreaks in hospitals and strategies to avoid them; 3) hand washing and alternatives such as rapid hand antisepsis; 4) water and food in the hospital as po...

Reusable industrial control systems

Industrial control hardware may be reused for several purposes. The same industrial PC type may control the drives of a portal system, act as a programmable logic controller, or control any other device. Moreover the same piece of hardware may control different device types at the same time in concurrency. In this paper, we discuss four successive software engineering approaches to exploit the ...

Does monocular visual space contain planes?

The issue of the existence of planes-understood as the carriers of a nexus of straight lines-in the monocular visual space of a stationary human observer has never been addressed. The most recent empirical data apply to binocular visual space and date from the 1960s (Foley, 1964). This appears to be both the first and the last time this basic issue was addressed empirically. Yet the question is...