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216     INTRODUCTION




                                                                                     Develop
                       U.S.             Characterize            Identify
                                                                                     model to
                   businesses            businesses            significant
                                                                                   quantify and
                       and              according to         variables that       evaluate solid
                   government              waste            influence waste           waste
                     agencies           composition           generation
                                                                                    generation

                      Waste
                    generators
                                     Hypothesis 1           Hypothesis 2          Hypothesis 3
                                     Similar businesses     Significant           Solid waste
                                     generate similar       variables can be      generation
                                     solid waste            determined            performance
                                     compositions                                 parameters can
                                                                                  be established

                   Figure 12.1      Model concepts and hypotheses.






                 12.3 Theoretical Structure of the


                 Model Concepts and Hypotheses



                 A theoretical structure for the proposed model was established based on the intended
                 model functions and theoretical concepts.  To acheive the goal, related hypotheses
                 were developed to build the evaluation model. Three concepts were interrelated to
                 develop the proposed model and hypotheses required to accomplish the research goal.
                 These concepts are listed below and can be seen in Fig. 12.1.


                 1 Group businesses that generate similar waste stream compositions.
                 2 Identify significant variables that aid in the prediction of the solid waste rates from
                    businesses and government agencies that generate similar compositions.
                 3 Develop and validate a model to evaluate solid waste generation.
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