Tide is a significant factor which interferes with the berthing and departing operations of vessels in tidal ports. It is a preferable way to incorporate this factor into the simultaneous berth allocation and quay cra...Tide is a significant factor which interferes with the berthing and departing operations of vessels in tidal ports. It is a preferable way to incorporate this factor into the simultaneous berth allocation and quay crane( QC) assignment problem( BACAP) in order to facilitate the realistic decision-making process at container terminal. For this purpose,an integrated optimization model is built with tidal time windows as forbidden intervals for berthing or departing. A hind-and-fore adjustment heuristic is proposed and applied under an iterative optimization framework. Numerical experiment shows the satisfying performance of the proposed algorithm.展开更多
为提高客船安全返港(Safe Return to Port,SRTP)系统的可靠性和安全性,确保船员和旅客的生命财产安全,对客船安全返港系统的设计要求和核查方法进行分析,并通过案例对设计和核查方法的有效性进行验证。研究表明:基于SRTP要求的客船安全...为提高客船安全返港(Safe Return to Port,SRTP)系统的可靠性和安全性,确保船员和旅客的生命财产安全,对客船安全返港系统的设计要求和核查方法进行分析,并通过案例对设计和核查方法的有效性进行验证。研究表明:基于SRTP要求的客船安全返港系统设计和核查方法具有实用性和可行性,能够有效提升客船安全返港系统的设计可靠性和安全性。研究成果可为SRTP系统设计及检验提供一定参考。展开更多
Background: Jadelle, a long acting reversible progesterone contraceptive, has been in use in our centre for over 10 years and has not been comprehensively evaluated. Objectives: To determine the acceptance, efficacy, ...Background: Jadelle, a long acting reversible progesterone contraceptive, has been in use in our centre for over 10 years and has not been comprehensively evaluated. Objectives: To determine the acceptance, efficacy, and safety profile associated with the use of Jadelle contraceptive implant in the University of Port Harcourt Teaching hospital, Port Harcourt. Methods: This is a 10-year retrospective study of clients who accepted and used Jadelle for contraception in the university of Port Harcourt Teaching Hospital (UPTH), Port Harcourt. The case files were retrieved and information on their socio demographic profile, source of information, side effects, failures and reason for removal were extracted using a proforma. Data were filled into a spread sheet, analyzed using SPSS version 21.0 and presented in tables of frequencies and percentages. Results: Within the period under review, March 2007 to February 2017, 569 clients used Jadelle out of the 3829 women who accepted and used modern contraceptive in the UPTH. The mean age of users was 33.7 ± 4.2, 536 (94.2%) were multipara with a mean parity of 4.5 ± 3.8 while 541 (95.1%) had secondary education and above. The major side effect was irregular vaginal bleeding 36 (60.9%) while the main reason for removal of the device was expiration of method 272 (53.9%). A pregnancy was recorded during this period giving a pearl index of 0.002. Conclusion: Jadelle is a popular and a very effective means of contraception with increasing acceptance among our clients. The safety profile is high.展开更多
基金National Natural Science Foundations of China(Nos.70771065,71171130,61473211,71502129)
文摘Tide is a significant factor which interferes with the berthing and departing operations of vessels in tidal ports. It is a preferable way to incorporate this factor into the simultaneous berth allocation and quay crane( QC) assignment problem( BACAP) in order to facilitate the realistic decision-making process at container terminal. For this purpose,an integrated optimization model is built with tidal time windows as forbidden intervals for berthing or departing. A hind-and-fore adjustment heuristic is proposed and applied under an iterative optimization framework. Numerical experiment shows the satisfying performance of the proposed algorithm.
文摘为提高客船安全返港(Safe Return to Port,SRTP)系统的可靠性和安全性,确保船员和旅客的生命财产安全,对客船安全返港系统的设计要求和核查方法进行分析,并通过案例对设计和核查方法的有效性进行验证。研究表明:基于SRTP要求的客船安全返港系统设计和核查方法具有实用性和可行性,能够有效提升客船安全返港系统的设计可靠性和安全性。研究成果可为SRTP系统设计及检验提供一定参考。
文摘Background: Jadelle, a long acting reversible progesterone contraceptive, has been in use in our centre for over 10 years and has not been comprehensively evaluated. Objectives: To determine the acceptance, efficacy, and safety profile associated with the use of Jadelle contraceptive implant in the University of Port Harcourt Teaching hospital, Port Harcourt. Methods: This is a 10-year retrospective study of clients who accepted and used Jadelle for contraception in the university of Port Harcourt Teaching Hospital (UPTH), Port Harcourt. The case files were retrieved and information on their socio demographic profile, source of information, side effects, failures and reason for removal were extracted using a proforma. Data were filled into a spread sheet, analyzed using SPSS version 21.0 and presented in tables of frequencies and percentages. Results: Within the period under review, March 2007 to February 2017, 569 clients used Jadelle out of the 3829 women who accepted and used modern contraceptive in the UPTH. The mean age of users was 33.7 ± 4.2, 536 (94.2%) were multipara with a mean parity of 4.5 ± 3.8 while 541 (95.1%) had secondary education and above. The major side effect was irregular vaginal bleeding 36 (60.9%) while the main reason for removal of the device was expiration of method 272 (53.9%). A pregnancy was recorded during this period giving a pearl index of 0.002. Conclusion: Jadelle is a popular and a very effective means of contraception with increasing acceptance among our clients. The safety profile is high.
