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The hierarchical-component architecture was given to efficiently implement 3D rendering and 3D interaction in virtual spinal fixation surgery environment. It consisted in data layer, user logic layer and components layer, and each layer had definite functional division. The data layer provided data support and uniform access interface for the system; the user logic layer adopted singleton pattern...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.