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A proof test is a form of stress test to demonstrate the fitness of a load-bearing or impact-experiencing structure. An individual proof test may apply only to the unit tested, or to its design in general for mass-produced items. Such a structure is often subjected to loads above those expected in actual use, demonstrating safety and design margin.
They also gave the first zero-knowledge proof for a concrete problem, that of deciding quadratic nonresidues mod m. Together with a paper by László Babai and Shlomo Moran, this landmark paper invented interactive proof systems, for which all five authors won the first Gödel Prize in 1993. In their own words, Goldwasser, Micali, and Rackoff say:
Reviewers say they “love this little” machine, and that because of its leak proof design it keeps food “nice and hot.” The food storage container and inner liner are dishwasher safe, too ...
Water leak detection is an expression more commonly used for larger, integrated systems installed in modern buildings or those containing valuable artifacts, materials or other critical assets where early notification of a potentially damaging leak would be beneficial.
The locking lid and leak-proof seal provides easy transport around the kitchen or into the car for a potluck. ... simmer, or serve and the dishwasher-safe removable stoneware crock keeps cleanup ...
Reviewers say they “love this little” machine, and that because of its leak proof design it keeps food “nice and hot.” The food storage container and inner liner are dishwasher safe, too ...
This is called a "globe valve" in engineering and, while it gives a leak-proof seal and good fine adjustment of flow, both the rubber washer and the valve seat are subject to wear (and for the seat, also corrosion) over time, so that eventually no tight seal is formed in the closed position, resulting in a leaking tap. The washer can be ...
Copper is a good choice for gutters and downspouts because it makes strong leak-proof joints. Gutters and downspouts made with copper are expected to outlast other metal materials and plastics. Even in corrosion-prone seacoast environments or in areas with acid rain or smog, copper gutters and downspouts can provide 50 years or more of service ...