The purpose of this paper is to discuss corporate failure issues in the context of the global financial crisis. After considering some key issues, the paper shows how relevant these issues are relevant in the present ...The purpose of this paper is to discuss corporate failure issues in the context of the global financial crisis. After considering some key issues, the paper shows how relevant these issues are relevant in the present financial fiasco. It is clear that corporate failure brings untold hardships to all stakeholders. Again the problem of predicting corporate failure in the midst of the financial contagion could be overcome with sound risk management structure in place. The discussion mainly focuses on corporate failure within the context of the global financial distress. To the best of our knowledge this study is the first of its kind, which provides conceptual insights on predicting corporate failure and the global financial distress.展开更多
A further development of exclusively inverse frequency domain method for leak detection in pipelines is presented and validated.The location and leakage can be determined by analyzing the difference of transient water...A further development of exclusively inverse frequency domain method for leak detection in pipelines is presented and validated.The location and leakage can be determined by analyzing the difference of transient water head response between the simulated and measured data in frequency domain.The transient signals are generated by portion sharp closure of a valve from the small constant opening and it needs only a few meters of water.The discrete boundary conditions and observation data are both transformed in frequency domain by Laplace transform.Example in numerical simulation is studied for demonstration of this approach.The application of the method to an experimental pipeline confirms the analysis and illustrates successful detection of the single pipeline leak.The precalibration approach is presented to minimize the effect of data and model error and it splits the method into two parts.One uses data from a known state to fit the parameters of the model and the other uses data from the current state for the fitting of leak parameters using the now calibrated model.Some important practical parameters such as wave speed,friction in steady and unsteady state and the adaptability of the method are discussed.It was found that the nonlinearity errors associated with valve boundary condition could be prevented by consideration of the induced flow perturbation curve shape.展开更多
文摘The purpose of this paper is to discuss corporate failure issues in the context of the global financial crisis. After considering some key issues, the paper shows how relevant these issues are relevant in the present financial fiasco. It is clear that corporate failure brings untold hardships to all stakeholders. Again the problem of predicting corporate failure in the midst of the financial contagion could be overcome with sound risk management structure in place. The discussion mainly focuses on corporate failure within the context of the global financial distress. To the best of our knowledge this study is the first of its kind, which provides conceptual insights on predicting corporate failure and the global financial distress.
基金supported by the National Natural Science Foundation of China (Grant Nos. 51109230, 50679085)the Special Funds of IWHR (Grant No. 0912)
文摘A further development of exclusively inverse frequency domain method for leak detection in pipelines is presented and validated.The location and leakage can be determined by analyzing the difference of transient water head response between the simulated and measured data in frequency domain.The transient signals are generated by portion sharp closure of a valve from the small constant opening and it needs only a few meters of water.The discrete boundary conditions and observation data are both transformed in frequency domain by Laplace transform.Example in numerical simulation is studied for demonstration of this approach.The application of the method to an experimental pipeline confirms the analysis and illustrates successful detection of the single pipeline leak.The precalibration approach is presented to minimize the effect of data and model error and it splits the method into two parts.One uses data from a known state to fit the parameters of the model and the other uses data from the current state for the fitting of leak parameters using the now calibrated model.Some important practical parameters such as wave speed,friction in steady and unsteady state and the adaptability of the method are discussed.It was found that the nonlinearity errors associated with valve boundary condition could be prevented by consideration of the induced flow perturbation curve shape.
