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  2. von Mises yield criterion - Wikipedia

    v. t. e. In continuum mechanics, the maximum distortion energy criterion (also von Mises yield criterion [1]) states that yielding of a ductile material begins when the second invariant of deviatoric stress reaches a critical value. [2] It is a part of plasticity theory that mostly applies to ductile materials, such as some metals.

  3. Sensitivity and specificity - Wikipedia

    Sensitivity (true positive rate) is the probability of a positive test result, conditioned on the individual truly being positive. Specificity (true negative rate) is the probability of a negative test result, conditioned on the individual truly being negative. If the true status of the condition cannot be known, sensitivity and specificity can ...

  4. Rheem Manufacturing Company - Wikipedia

    www .rheem .com. Rheem Manufacturing Company is an American privately held manufacturer that produces residential and commercial water heaters and boilers, as well as heating, ventilating and air conditioning (HVAC) equipment. The company also produces and sells products under the Ruud brand name.

  5. Hill yield criterion - Wikipedia

    Hill yield criterion. The Hill yield criterion developed by Rodney Hill, is one of several yield criteria for describing anisotropic plastic deformations. The earliest version was a straightforward extension of the von Mises yield criterion and had a quadratic form. This model was later generalized by allowing for an exponent m.

  6. Reynolds number - Wikipedia

    Osborne Reynolds popularised the concept. In fluid mechanics, the Reynolds number ( Re) is a dimensionless quantity that helps predict fluid flow patterns in different situations by measuring the ratio between inertial and viscous forces. At low Reynolds numbers, flows tend to be dominated by laminar (sheet-like) flow, while at high Reynolds ...

  7. Coefficient of determination - Wikipedia

    In statistics, the coefficient of determination, denoted R2 or r2 and pronounced "R squared", is the proportion of the variation in the dependent variable that is predictable from the independent variable (s). It is a statistic used in the context of statistical models whose main purpose is either the prediction of future outcomes or the ...

  8. Industrial furnace - Wikipedia

    An industrial chamber furnace, used to heat steel billets for open-die forging. An industrial furnace, also known as a direct heater or a direct fired heater, is a device used to provide heat for an industrial process, typically higher than 400 degrees Celsius. [1] They are used to provide heat for a process or can serve as reactor which ...

  9. Myers–Briggs Type Indicator - Wikipedia–Briggs_Type_Indicator

    The Briggs Myers Type Indicator Handbook, published in 1944, was re-published as "Myers–Briggs Type Indicator" in 1956. [24] Myers' work attracted the attention of Henry Chauncey, head of the Educational Testing Service, a private assessment-organization. Under these auspices, the first MBTI "manual" was published, in 1962.

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