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2. Delta ratio - Wikipedia

   en.wikipedia.org/wiki/Delta_Ratio

   Delta ratio. Delta ratio, or " delta-delta ", is a formula that can be used to assess elevated anion gap metabolic acidosis and to evaluate whether a mixed acid–base disorder ( metabolic acidosis) is present. The anion gap (AG) without potassium is calculated first and if a metabolic acidosis is present, results in either a high anion gap ...

3. Logarithmic decrement - Wikipedia

   en.wikipedia.org/wiki/Logarithmic_decrement

   The logarithmic decrement is defined as the natural log of the ratio of the amplitudes of any two successive peaks: where x ( t) is the overshoot (amplitude - final value) at time t and x(t + nT) is the overshoot of the peak n periods away, where n is any integer number of successive, positive peaks. The damping ratio is then found from the ...

4. Greeks (finance) - Wikipedia

   en.wikipedia.org/wiki/Greeks_(finance)

   Since the delta of underlying asset is always 1.0, the trader could delta-hedge his entire position in the underlying by buying or shorting the number of shares indicated by the total delta. For example, if the delta of a portfolio of options in XYZ (expressed as shares of the underlying) is +2.75, the trader would be able to delta-hedge the ...

5. Delta method - Wikipedia

   en.wikipedia.org/wiki/Delta_method

   Delta method. In statistics, the delta method is a method of deriving the asymptotic distribution of a random variable. It is applicable when the random variable being considered can be defined as a differentiable function of a random variable which is asymptotically Gaussian .

6. ΔT (timekeeping) - Wikipedia

   en.wikipedia.org/wiki/ΔT_(timekeeping)

   Δ. T. (timekeeping) In precise timekeeping, ΔT ( Delta T, delta-T, deltaT, or DT) is a measure of the cumulative effect of the departure of the Earth's rotation period from the fixed-length day of International Atomic Time (86,400 seconds). Formally, Δ T is the time difference ΔT = TT − UT between Universal Time (UT, defined by Earth's ...

7. Gibbs free energy - Wikipedia

   en.wikipedia.org/wiki/Gibbs_free_energy

   t. e. In thermodynamics, the Gibbs free energy (or Gibbs energy as the recommended name; symbol ) is a thermodynamic potential that can be used to calculate the maximum amount of work, other than pressure-volume work, that may be performed by a thermodynamically closed system at constant temperature and pressure.

8. Table of thermodynamic equations - Wikipedia

   en.wikipedia.org/wiki/Table_of_thermodynamic...

   Quantity (common name/s) (Common) symbol/s Defining equation SI units Dimension Temperature gradient: No standard symbol K m −1 [Θ][L] −1 Thermal conduction rate, thermal current, thermal/heat flux, thermal power transfer

9. Flow coefficient - Wikipedia

   en.wikipedia.org/wiki/Flow_coefficient

   Flow coefficient. The flow coefficient of a device is a relative measure of its efficiency at allowing fluid flow. It describes the relationship between the pressure drop across an orifice valve or other assembly and the corresponding flow rate . Mathematically the flow coefficient Cv (or flow-capacity rating of valve) can be expressed as. where.