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spec: Application of performance-based procedures requires : An understanding of the relation between performance and nonlinear modeling ; selection and manipulation of ground motions appropriate to design hazard levels ; selection of appropriate nonlinear models and analysis procedures ; interpretation of results to determine design quantities based on nonlinear dynamic analysis procedures ; careful attention to structural details ; and peer review by independent qualified experts to help assure the building official that the proposed materials and system are acceptable . That entire area should be rethought , because the experience lies with the contractors . The key message here is that it is in the developers interest to identify the problem as early as possible and well before planning aplications are drawn up . There is no technical or economic reason why electrical generation should continue to dominate either air pollution statistics or global climate concerns . An Authoritarian solution would simply posit a central power that controlled the allocation of fishing , perhaps setting up a strict regime of fishing times or maximum catch allowed . Currently , CT scans and x-rays of patients are taken and analyzed by physicians so that decisions about surgery or pharmacological intervention can be made . The Local Area Environment Committee functioned smoothly for a while and gathered data from more than one hundred companies . A decentralized model may make it more difficult to meet monthly , in which case a quarterly meeting might make more sense . Marvin Spevack ) . The proposed design procedure is demonstrated by a detailed example for the design of viscoelastic dampers in a nine-story moment-resisting steel frame .