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The combination of depth perception , look-around and walk-around capability , and realistic interactions of humans with a full scale representation of virtual prototypes provides an unrivaled instrument for the analysis of spatial arrangements as found in complex mechanical systems . The combination of depth perception , look-around and walk-around capability , and realistic interactions of humans with a full-scale representation of a virtual prototype provides an unrivaled instrument for the analysis of spatial arrangements as found in complex mechanical systems . Hence the idea arose of using the Web Services mechanisms systematically for the interactions between requesters and services within a Grid - thus allowing both service and resource descriptions , and actual interactions with services , to be expressed in a system-independent language , WSDL . At the most recent IACC meeting , topics included the progress being made on implementation of autism research centers programs by NIH and CDC ; efforts to comprehensively map the autism research field to analyze its strengths and any gaps ; information about each of the individual grants that collectively constitute the majority of the NIH autism research portfolio ; strategies to improve the coordination of gene and tissue banking , data sharing , and federal interactions with voluntary organizations ; and , strategic planning for the development of treatments and interventions for autism . Authors can quickly develop software demonstrations and simulations complete with text descriptions , editable mouse movements , and scored interactions with learner feedback .