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  • Jinan Duan
  • 2009
—How to effectively evolve enterprise application with the frequently changing requirement is a challenge to software engineering. Requirement is a noticeable cause of evolution of enterprise application, and requirement changes cannot be estimated precisely in many cases. Therefore, the main problem is how to capture requirements and changes, and propagate(More)
  • Jinan Duan
  • 2009
—The main problem of enterprise application evolution is how to capture requirements and then propagate requirement changes to application. Effectively evolving enterprise application with the frequently changing requirements is still a challenge to software engineering. Requirement is the root causes of evolution of enterprise applications in many cases.(More)
Effective prediction of ROP (Rate of Penetration) is a crucial part of successful well drilling process. Due to the penetration complexities and the formation heterogeneity, traditional way such as ROP equations and regression analysis are confined by their limitations in the drilling practices. With the accumulation of the geology data and drilling logs,(More)
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