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Medical Icons for Vista
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 Medical Icons for Vista

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Some number of products Nit is exposed to test and the moments are fixed Occurrence of refusals. Tests stop, as soon as will be established Laws of refusals.

The basic characteristics of reliability:

P (t) - probability of non-failure operation;

q (t) - probability of refusal q (t) = 1 - P (t);

b (t) - frequency of refusals;

? (t) - failure rate;

it. - average time of non-failure operation.

The probability of non-failure operation characterises probability of absence

Refusals at the set service conditions during the certain set Time interval:

P (t) = p (t1> tit.),


t1 - Time between failures time;

tit. - the set operating time.

Non-failure operation of technics and refusal occurrence - events incompatible and

The opposite.

Probability of non-failure operation - the decreasing function of time possessing

Properties: during the initial moment of time (at t = 0) it (0) = 1, and at t it (t)

Aspires to zero.

Frequency of refusal is defined under the formula:



n (t) - number of samples of the technics which have refused for a time unit;

Let's notice, what n (t) = N (t) - (Nt +? t),


Nt - quantity of the samples regularly working in the beginning of an interval? t and

Remained efficient in the end of this interval.

Failure rate:



n (t) - number of the samples who have refused for a time unit; - an average

Regularly working samples for the same time interval.

Average time of non-failure operation is defined as a population mean Continuous random variable - a technics operating time.

Quality management of new technics can be carried out and on a basis Expert estimations. Independent experts, most are for this purpose involved Technicians competent of a given kind.

Besides knowledge of technical characteristics and technology the expert should

To own a situation in the market of innovations, to prefer that

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Perfect Medical Icons If you need your software to appear professional and yet be intuitive and eye-catching, don't look too far. Perfect Medical Icons will bring you the best of two worlds.

Large People Icons Large People Icons will be a perfect addition to your project. This bright icon pacl illustrates all the different professional and social roles you can think of. The icons are crafted by experienced designers and offer the best possible quality.

Large Weather Icons Large Weather Icons represent different weather conditions typical in software, weather portals, and mobile gadgets. The icons are available in all resolutions standard to Windows, Mac OS, and mobile devices. The biggest versions are huge 512x512 pixel icons with vector sources in Adobe Illustrator (.ai) format easily affordable and ready to be printed or used in presentations in highest resolution.

Medical Toolbar Icons Develop great-looking applications for hospitals, medical and health care specialists with a set of Medical Toolbar Icons. The collection includes icons for Nurse, Doctor, Ampoule, Syringe and so on.

Multimedia Icons for Vista Refine your multimedia project for High Definition screens with pre-made Multimedia Icons for Vista. This set will cut down your project costs and speed up development.