In order to respond the discredit on the design wave standard and to recommend new consideration on design wave parameters, based on the long-term distribution of statistic characteristics of waves and the short-term ...In order to respond the discredit on the design wave standard and to recommend new consideration on design wave parameters, based on the long-term distribution of statistic characteristics of waves and the short-term probability properties of sea state defined by giving the return period, the calculation of the return period, the height, the period, and the oceanic wave parameters of the design wave and the forecasting methods are discussed in this paper. To provide references for the operation reliability of floating structures in the extreme sea state, the method of determining the design wave parameters is resurveyed. A proposal is recommended that the design wave, which can be either significant wave with 500-year of the return period, or the maximum wave with 1/N of exceeding probability, 100-year of the return period, can be applied in the engineering design practice.展开更多
Introduction Gastric cancer is still a major health problem and a leading cause of cancer mortality despite the worldwide decline Jn incidence. Surgery Js the only potentially curative treatment for localized gastric...Introduction Gastric cancer is still a major health problem and a leading cause of cancer mortality despite the worldwide decline Jn incidence. Surgery Js the only potentially curative treatment for localized gastric cancer and radical gastrectomy with extended lymphadenectomy is now recognized as a reasonably safe procedure in experienced centers.展开更多
The typical industry practice for Tension Leg Platform （TLP） design focuses on a conventional short-term design recipe, which assumes that an N-year design environment leads to an N-year response. In the response-ba...The typical industry practice for Tension Leg Platform （TLP） design focuses on a conventional short-term design recipe, which assumes that an N-year design environment leads to an N-year response. In the response-based design method, the TLP is designed to withstand N-year responses rather than respond to N-year environmental conditions. In this paper, we present an overview and a general procedure for the response-based design method and use a case study to compare the critical TLP responses between the two methods. The results of our comparison show that the conventional short-term design method often contains an element of conservatism and that the response-based design method can reduce the design conditions and thereby achieve cost savings.展开更多
基金the National 863 Plan Foundation under Grant No.2006AA09A104
文摘In order to respond the discredit on the design wave standard and to recommend new consideration on design wave parameters, based on the long-term distribution of statistic characteristics of waves and the short-term probability properties of sea state defined by giving the return period, the calculation of the return period, the height, the period, and the oceanic wave parameters of the design wave and the forecasting methods are discussed in this paper. To provide references for the operation reliability of floating structures in the extreme sea state, the method of determining the design wave parameters is resurveyed. A proposal is recommended that the design wave, which can be either significant wave with 500-year of the return period, or the maximum wave with 1/N of exceeding probability, 100-year of the return period, can be applied in the engineering design practice.
文摘Introduction Gastric cancer is still a major health problem and a leading cause of cancer mortality despite the worldwide decline Jn incidence. Surgery Js the only potentially curative treatment for localized gastric cancer and radical gastrectomy with extended lymphadenectomy is now recognized as a reasonably safe procedure in experienced centers.
文摘The typical industry practice for Tension Leg Platform （TLP） design focuses on a conventional short-term design recipe, which assumes that an N-year design environment leads to an N-year response. In the response-based design method, the TLP is designed to withstand N-year responses rather than respond to N-year environmental conditions. In this paper, we present an overview and a general procedure for the response-based design method and use a case study to compare the critical TLP responses between the two methods. The results of our comparison show that the conventional short-term design method often contains an element of conservatism and that the response-based design method can reduce the design conditions and thereby achieve cost savings.
