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Any non-linear differentiable function, (,), of two variables, and , can be expanded as + +. If we take the variance on both sides and use the formula [11] for the variance of a linear combination of variables (+) = + + (,), then we obtain | | + | | +, where is the standard deviation of the function , is the standard deviation of , is the standard deviation of and = is the ...
Resources, events, agents (REA) is a model of how an accounting system can be re-engineered for the computer age.REA was originally proposed in 1982 by William E. McCarthy as a generalized accounting model, [1] and contained the concepts of resources, events and agents (McCarthy 1982).
Sensitivity analysis is the study of how the uncertainty in the output of a mathematical model or system (numerical or otherwise) can be divided and allocated to different sources of uncertainty in its inputs. [1] [2] This involves estimating sensitivity indices that quantify the influence of an input or group of inputs on the output.
Econophysics is a non-orthodox (in economics) interdisciplinary research field, applying theories and methods originally developed by physicists in order to solve problems in economics, usually those including uncertainty or stochastic processes and nonlinear dynamics.
An accounting information system (AIS) is a system of collecting, storing and processing financial and accounting data that are used by decision makers.An accounting information system is generally a computer-based method for tracking accounting activity in conjunction with information technology resources.
IFRS 9 began as a joint project between IASB and the Financial Accounting Standards Board (FASB), which promulgates accounting standards in the United States. The boards published a joint discussion paper in March 2008 proposing an eventual goal of reporting all financial instruments at fair value, with all changes in fair value reported in net income (FASB) or profit and loss (IASB). [1]
Banking regulators have taken actions to limit discretion and reduce valuation uncertainties. A row of regulatory documents has been issued, providing detailed prudential requirements that have many points of contact with the accounting rules and have the indirect effect of limiting the discretion left to banks in valuating financial instruments.
Note that the mean (expected value) of z is not what would logically be expected, i.e., simply the square of the mean of x. Thus, even when using arguably the simplest nonlinear function, the square of a random variable, the process of finding the mean and variance of the derived quantity is difficult, and for more complicated functions it is ...