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Latent failures span the first three domains of failure in Reason's model. [ 9 ] In the early days of the Swiss cheese model, late 1980 to about 1992, attempts were made to combine two theories: James Reason's multi-layer defence model and Willem Albert Wagenaar's tripod theory of accident causation .
Other latent variables correspond to abstract concepts, like categories, behavioral or mental states, or data structures. The terms hypothetical variables or hypothetical constructs may be used in these situations. The use of latent variables can serve to reduce the dimensionality of data. Many observable variables can be aggregated in a model ...
He suggests compensating for this when building usable systems, thus allowing a higher percentage of users to complete tasks without errors: For example, suppose the goal of your program is to allow people to convert digital camera photos into a web photo album.
Linear errors-in-variables models were studied first, probably because linear models were so widely used and they are easier than non-linear ones. Unlike standard least squares regression (OLS), extending errors in variables regression (EiV) from the simple to the multivariable case is not straightforward, unless one treats all variables in the same way i.e. assume equal reliability.
Healthcare systems are complex in that they are diverse in both structure (e.g. nursing units, pharmacies, emergency departments, operating rooms) and professional mix (e.g. nurses, physicians, pharmacists, administrators, therapists) and made up of multiple interconnected elements with adaptive tendencies in that they have the capacity to change and learn from experience.
In construction contracting, a latent defect is defined as a defect which exists at the time of acceptance but cannot be discovered by a reasonable inspection. [2]In the 1864 US case of Dermott v Jones, the latent defect lay in the soil on which a property had been built, giving rise to problems which subsequently made the house "uninhabitable and dangerous".
Examples of latent errors may include; equipment design flaws that make the human-machine interface less than intuitive, or organizational flaws, such as staffing and training decisions made for fiscal reasons increasing the likelihood of errors. Latent errors are often unrecognized and have the capacity to result in multiple types of active ...