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  2. Reaction rate constant - Wikipedia

    en.wikipedia.org/wiki/Reaction_rate_constant

    where A and B are reactants C is a product a, b, and c are stoichiometric coefficients,. the reaction rate is often found to have the form: = [] [] Here ⁠ ⁠ is the reaction rate constant that depends on temperature, and [A] and [B] are the molar concentrations of substances A and B in moles per unit volume of solution, assuming the reaction is taking place throughout the volume of the ...

  3. Direct material usage variance - Wikipedia

    en.wikipedia.org/wiki/Direct_material_usage_variance

    Let us assume that standard direct material cost of widget is as follows: 2 kg of unobtainium at € 60 per kg ( = € 120 per unit). Let us assume further that during given period, 100 widgets were manufactured, using 212 kg of unobtainium which cost € 13,144. Under those assumptions direct material usage variance can be calculated as:

  4. Failure rate - Wikipedia

    en.wikipedia.org/wiki/Failure_rate

    Failure rate is the frequency with which any system or component fails, expressed in failures per unit of time. It thus depends on the system conditions, time interval, and total number of systems under study. [ 1 ]

  5. Direct material total variance - Wikipedia

    en.wikipedia.org/wiki/Direct_material_total_variance

    Let us assume that standard direct material cost of widget is as follows: 2 kg of unobtainium at $ 60 per kg ( = $ 120 per unit). Let us assume further that during the given period, 100 widgets were manufactured, using 212 kg of unobtainium which cost $ 13,144. Under those assumptions direct material total variance can be calculated as:

  6. Price variance - Wikipedia

    en.wikipedia.org/wiki/Price_Variance

    Price variance (Vmp) is a term used in cost accounting which denotes the difference between the expected cost of an item (standard cost) and the actual cost at the time of purchase. [1] The price of an item is often affected by the quantity of items ordered, and this is taken into consideration.

  7. Continuous stirred-tank reactor - Wikipedia

    en.wikipedia.org/wiki/Continuous_stirred-tank...

    The rate constant can be determined using a known empirical reaction rate that is adjusted for temperature using the Arrhenius temperature dependence. [2] Generally, as the temperature increases so does the rate at which the reaction occurs. Equation 6 can be solved by integration after substituting the proper rate expression.

  8. Earned value management - Wikipedia

    en.wikipedia.org/wiki/Earned_value_management

    According to the PMBOK (7th edition) by the Project Management Institute (PMI), Cost variance (CV) is a "The amount of budget deficit or surplus at a given point in time, expressed as the difference between the earned value and the actual cost." [19] Cost variance compares the estimated cost of a deliverable with the actual cost. [20]

  9. Variable cost - Wikipedia

    en.wikipedia.org/wiki/Variable_cost

    Total Costs disaggregated as Fixed Costs plus Variable Costs. The quantity of output is measured on the horizontal axis. Variable costs are costs that change as the quantity of the good or service that a business produces changes. [1] Variable costs are the sum of marginal costs over all units produced. They can also be considered normal costs.