We choose a parametric Weibull hazard model formulation to account for the baseline trend of the upselling likelihood during the customer lifetime and to allow for a time-varying formulation of our focal variables, pre- and post-purchase interactions, service requests, and service complaints (Grewal et al. 2004; Kamakura et al. 2004).
Therefore, it is important to recognize likely zones of high activity during the problem formulation and hazard characterization stages of a risk assessment, and when using sampling to identify in situ exchange rates.
Twenty methods are reviewed for their goal and scope, developer, target application, required data, considered aspects and parameters, exposure assessment, hazard extent estimation, index formulation, and output data.
For a particular human health risk assessment of ARB, it would be important to select/expand on individual pathway scenarios (identifying critical environmental compartments to human contact) relevant to the antibiotic/resistance determinants identified in the problem formulation and hazard characterization stages.
In this commentary, we describe the shortcomings of the current procedures for assessing the hazards of pesticide formulations and demonstrate that inert ingredients can increase the toxicity of and potential exposure to pesticide formulations.
Independent assessment of the hazards of pesticide formulations is stymied by the lack of public access to product-specific information about inert ingredients.
It is derived from the early formulation of seismic hazard analysis by Cornell (1968) and Esteva (1968).
The formulation of the hazard index given in eq. 16 allows taking into account the non-linear effects from the interaction of mixture components if the necessary information is available, while simplifying down to a simple dose addition if no interaction data exist.
In such a case formulating the hazard as a function of all the covariates and further finding analytical formulations for their time-dependencies can be very challenging and time-consuming.
Thus, instead of explicitly formulating the hazard function, as suggested by van Dooren et al. [14], one can simply approximate it with a formulation that directly yields a known distribution for survival times (a table of distributions and their underlying hazard functions is given e.g. in [15]).
