Fail-safe

Due to the hostile environmental conditions on Mars, human visitors to the planet would have to rely heavily on artificial environments in order to survive. Their habitats' life support equipment must therefore run 100% reliably. This article describes the principles of fail-safe engineering.

The basic premise of fail-safe behaviour is to ensure that if a system or subsystem fails, it should do so in a "safe" manner; that is, no single failure should be able to place those who use or maintain it in danger.

The following systems are considered:

• Life support systems (oxygen, temperature)
• Production and storage of food
• Production, distribution and storage of energy
• Telecommunication network
• buildings

Redundancy

Every system is built twice or more, where each can work independent from the other. The capacity of each system is big enough to support the full service in case of failure of one system. In normal operation both systems are running in parallel with half load. This principle provides the best reliability for the whole function.

Example: The number and size of solar panels is at least twice as big as actually needed for vital system operation. In normal operation mode the surplus energy can be used for additional convenience.

, it's looking that way) it must be shot in 3D with the new tlhncoeogy, not converted in post with some cheesy attempt to make extra money.-Personally I feel if it's done right 3D could add a since of realism and immersion that is sorely missing in so many movies. Remember the way we felt when we first stepped into the worlds created by Cyan? It was as if you were there. That's our biggest goal with the Myst Movie, to put you there, let you live in Anna's shoes, and feel the excitement you felt playing the games. If Myst is done in 3D, we will do everything within our power to use it as a tool to enhance your experience, not undermine it.-Of course if you want you, can buy the cheaper tickets and just see it in 2D. But keep this in mind if you buy the 3D tickets you will be helping to insure a sequel not to mention helping to support your dear friends here at Mysteria Film Group

Grid instead of chain

The whole system must be available independent from the failure location, even in catastrophic situations. The interconnection must allow normal functioning of the whole system even if one system part is completely destroyed. For the connection of more than two systems a grid is better than a chain.

The chain architecture (bad) bears the risk of a complete cut-off for system parts. The grid architecture (good) ensures a continuous interconnection of the remaining systems.

This applies for buildings, as well. In the case of chain architecture, a drop in air pressure in building Y separates the people in X and Z.

Example: The Internet is (partially) constructed in a grid architecture. Despite the fact that it is the most complex artificial thing men have ever constructed it has never failed as a whole.

Hi all! I started this blog manily as a way to document my own work on different private projects. I will try to be more attentative to your questions. Meanwhile, I must say that I do appreciate you all contributing and helping each other out. To Maria: I agree with Ravi that it sounds like a hardware issue.To Aparajith Guha: I assume you mean that the lock code has been changed from 12345 and you don't remember the new code. I haven't tested it but you may want to search the Internet for THE-NOKIA-UNLOCK. It sounds as if it could help you out.Good luck to you both!