Various adaptive mesh refinement techniques are often employed in numerical simulations for increasing spatial and temporal resolution beyond the limits imposed by available CPU time and memory space. Recently, an octree‐based adaptive mesh structure was successfully used in fluid animation to place more grid cells efficiently in visually interesting regions of fluids. In an attempt to optimize the use of computational resources further in fluid animation, this paper extends this adaptive technique by modifying the mesh refinement scheme so that the camera's viewing properties are dynamically exploited during the simulation. Based on a simple adaptive mesh structure, we show that the new meshing strategy can save a substantial amount of computation time and memory space by using a view‐dependent adaptive approach. The experimental results reveal that the proposed technique provides a good compromise between the computational effort and the simulation's fidelity, and may be used quite effectively in 3D animation production.
One of the most important requirements in the asset management system of infrastructure facilities is to manage the level of service. After the facilities were built, many parts of the replacement or repair items will be occurred by the requests of the users on the way of operation and management. Many advanced asset management agencies are setting and developing the target service level for managing the quality of service provided by themselves, and also establish annual repair and replacement plan and a long-term plan, based on their target aim. In this study, the complaints related with the sewage of S-area were analyzed, in which is progressed the domestic asset management development for the facilities and pipes related to wastewater. Based on these complaints data, the S-area's service performance of odor, damage and back flow, etc. were analyzed and compared with service level management strategies of advanced asset management agency. Through the steps, response times of complaints having the unclear standards or guidelines developed into the more clearly establishment making the target level of service. The establishment of target LOS will constitute a standard that allows to manage the future service level of S-area.
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