Dynamic data driven application system: Recent development and future perspective

Computational model, measurement infrastructure, and information technology are currently used to analyze and predict the characteristics and behaviors of complex systems. Most of the computational models used to date, however, only allow data inputs that are fixed when the simulations are launched. These simulation and measurement approaches are serialized and static but not synchronized and cooperative. The lack of capability to simultaneously inject measured data into simulation models limits the dynamic requirements for simulations in response to the real-time changing conditions and therefore is unable to catch the instantaneous reactions and occurrences in nature. Dynamic data driven application system (DDDAS) is a new paradigm in which simulations, measurements, and applications are dynamically integrated, creating new capabilities for a wide range of science and engineering applications. It is a symbiotic feedback control system, which can dynamically employ simulations to guide experimental measurements and to determine when, where, and how to gather additional data, and in reverse, can dynamically steer the simulations based on the experimental measurements, and thereby promising more accurate and precise analyses and predictions. This study presents an overview on recent development and future perspective of the DDDAS. The basic concept and examples of the DDDAS applied to general science, natural sciences, and engineering are given. Suggested areas on implementations of the DDDAS and its limitations are discussed. Synthesis of literature reveals that the DDDAS has great application potentials in many aspects of environmental, agricultural, and ecological practices. [Copyright &y& Elsevier]