What to Look for Inside your Steam Boiler?

Written by Thomas Yoon

Continued from page 1

Waterside boiler inspection is carried out for that purpose. If you arerepparttar person who entersrepparttar 133433 boiler manhole to makerepparttar 133434 inspection, make sure that all your pockets are empty, and that nothing can fall off. This is a good reason for this. Any object dropped intorepparttar 133435 waterside can interfere withrepparttar 133436 heat transfer process, and can also cause premature failure due to vibration and rubbing effects.

What would you look for?

The presence of scale, corrosion, and distortion. All these will cause problems later on.

But before you enterrepparttar 133437 boiler, please make sure that there is enough ventilation, enough oxygen for breathing, no presence of remaining steam, no chance of accidental entry of steam, and so on....

Think safety!

"A Picture Tells a Thousand Words" Safety Cartoons makes strong, lasting impression on People. Reduce your accidents and costs by Safety Cartoons. Very reasonable rates and customable to your industry at: Cartoons for Safety

Many years of working experience in Marine, Facilities, Construction has given the author material for writing e-books and articles related to engineering, and management. Subscribe to facworld ezine More information at Marine and M & E

The Fourth Law of Robotics - Part II

Written by Sam Vaknin

Continued from page 1

No one succeeded to prove that a function must be recursive in order to be effectively calculable. This is (as Post noted) a "working hypothesis" supported by overwhelming evidence. We don't know of any effectively calculable function which is not recursive, by designing new TMs from existing ones we can obtain new effectively calculable functions from existing ones and TM computability stars in every attempt to understand effective calculability (or these attempts are reducible or equivalent to TM computable functions).

The Turing Machine itself, though abstract, has many "real world" features. It is a blueprint for a computing device with one "ideal" exception: its unbounded memory (the tape is infinite). Despite its hardware appearance (a read/write head which scans a two-dimensional tape inscribed with ones and zeroes, etc.) it is really a software application, in today's terminology. It carries out instructions, reads and writes, counts and so on. It is an automaton designed to implement an effective or mechanical method of solving functions (determiningrepparttar truth value of propositions). Ifrepparttar 133432 transition from input to output is deterministic we have a classical automaton if it is determined by a table of probabilities we have a probabilistic automaton.

With time and hype,repparttar 133433 limitations of TMs were forgotten. No one can say thatrepparttar 133434 Mind is a TM because no one can prove that it is engaged in solving only recursive functions. We can say that TMs can do whatever digital computers are doing but not that digital computers are TMs by definition. Maybe they are maybe they are not. We do not know enough about them and about their future.

Moreover,repparttar 133435 demand that recursive functions be computable by an UNAIDED human seems to restrict possible equivalents. Inasmuch as computers emulate human computation (Turing did believe so when he helped constructrepparttar 133436 ACE, atrepparttar 133437 timerepparttar 133438 fastest computer inrepparttar 133439 world) they are TMs. Functions whose values are calculated by AIDED humans withrepparttar 133440 contribution of a computer are still recursive. It is when humans are aided by other kinds of instruments that we have a problem. If we use measuring devices to determinerepparttar 133441 values of a function it does not seem to conform torepparttar 133442 definition of a recursive function. So, we can generalize and say that functions whose values are calculated by an AIDED human could be recursive, depending onrepparttar 133443 apparatus used and onrepparttar 133444 lack of ingenuity or insight (the latter being, anyhow, a weak, non-rigorous requirement which cannot be formalized).

Sam Vaknin ( http://samvak.tripod.com ) is the author of Malignant Self Love - Narcissism Revisited and After the Rain - How the West Lost the East. He served as a columnist for Central Europe Review, PopMatters, and eBookWeb , and Bellaonline, and as a United Press International (UPI) Senior Business Correspondent. He is the the editor of mental health and Central East Europe categories in The Open Directory and Suite101.

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