Comparing and analyzing the difference between automatic-observed and manual-observed wind speed based on the wind speed parallel observations in two methods, we find that many elements can influence the difference be...Comparing and analyzing the difference between automatic-observed and manual-observed wind speed based on the wind speed parallel observations in two methods, we find that many elements can influence the difference between automatic-observed and manual-observed wind speed, including the levels of speed wind, observation instruments and different regions. According to these elements, correction has been conducted, and find that the correction according to the level of wind speed has the best correction effect.展开更多
The creation of geometric model of a ship to determine the characteristics of hydrostatic and hydrodynamic, and also for structural design and equipments arrangement are so important in the ship design process. Planni...The creation of geometric model of a ship to determine the characteristics of hydrostatic and hydrodynamic, and also for structural design and equipments arrangement are so important in the ship design process. Planning tunnel high speed craft is one of the crafts in which, achievement to their top speed is more important. These crafts with the use of tunnel have the aero-hydrodynamics properties to diminish the resistance, good sea-keeping behavior, reduce slamming and avoid porpoising. Because of the existence of the tunnel, the hull form generation of these crafts is more complex and difficult. In this paper, it has attempted to provide a method based on geometry creation guidelines and with an entry of the least control and hull form adjustment parameters, to generate automatically the hull form of plarming tunnel craft. At first, the equations of mathematical model are described and subsequent, three different models generated based on present method are compared and analyzed. Obviously, the generated model has more application in the early stages of design.展开更多
Objective: to explore the effect of pain nursing combined with intravenous self-controlled analgesia pump on promoting the recovery speed of parturients after cesarean section. Methods: the subjects of this experiment...Objective: to explore the effect of pain nursing combined with intravenous self-controlled analgesia pump on promoting the recovery speed of parturients after cesarean section. Methods: the subjects of this experiment were 70 parturients who underwent cesarean section in Jiyang District People's Hospital of Ji’nan City, Shandong Province. The time interval was from April 2020 to March 2021. The cardinal number was assigned to the control group (routine care) and the even number was assigned to the observation group (pain care combined with intravenous automatic analgesia pump) with 35 cases in each group. The pain degree (VAS), incidence rate of pain side effects, physical rehabilitation speed, quality of life and nursing compliance of the two groups of parturients in different periods after operation were compared. Results: the VAS score of the observation group was lower than that of the control group (P<0.05), the incidence of pain and side effects of the observation group was lower than that of the control group (P0.05), the first time of exhausting air, removing urinary catheter, getting out of bed for the first time, the time of first lactation and the time of hospitalization of the observation group were shorter than that of the control group (P0.05), the quality of life of the observation group was higher than that of the control group (P0.05), and the compliance of the observation group in the implementation of clinical nursing work was higher than that of the control group (P0.05). Conclusion: pain nursing combined with intravenous self-controlled analgesia pump has good analgesic effect after cesarean section, and can promote the recovery rate of postpartum body, reduce the incidence of side effects, improve the nursing compliance of parturients and improve the quality of life of parturients. It is worthy of wide clinical application.展开更多
This paper study and solve the design and manufacture of baby care car, its unique function is the baby carriage can be used as a baby bed, when necessary, it can also become a nursing car, sensor in the vehicle can b...This paper study and solve the design and manufacture of baby care car, its unique function is the baby carriage can be used as a baby bed, when necessary, it can also become a nursing car, sensor in the vehicle can be real-time detected whether the baby bed wetting and induction time will give parents information feedback; the humidity sensing probe controlled by single chip microcomputer and with the bottle clamp flexible connecting rod, can realize the baby auxiliary nurse; remote wireless commtmication system can allow parents to monitor children＇ s state. The design of intelligent baby carriage, to enhance the technological content of products, promote the innovation of design China bassinet production, has the important practical significance to seize the smart baby car market.展开更多
With rapid development of the railway traffic, the moving block signaling system （MBS） method has become more and more important for increasing the track capacity by allowing trains to run in a shorter time-headway ...With rapid development of the railway traffic, the moving block signaling system （MBS） method has become more and more important for increasing the track capacity by allowing trains to run in a shorter time-headway while maintaining the required safety margins. In this framework, the tracking target point of the following train is moving forward with its leading train. This paper focuses on the energy saving tracking control of two successive trains in MBS. Nonlinear programming method is used to optimize the energy-saving speed trajectory of the following train. The real-time location of the leading train could be integrated into the optimization process. Due to simplicity, it can be used for online implementation. The feasibility and effectiveness are verified through simulation. The results show that the new method is efficient on energy saving even when disturbances present.展开更多
The automatic positioning control of mooring system for deepwater semi-submersible platform has become a key issue in the research and development field of deep-sea resources. The Dual- Stage Actuator (DSA) proposed i...The automatic positioning control of mooring system for deepwater semi-submersible platform has become a key issue in the research and development field of deep-sea resources. The Dual- Stage Actuator (DSA) proposed in this paper can replace the single actuator to achieve the high speed and high precision positioning by cooperative control. The relative model and control algorithm of motion trajectory (CAMT) are designed and validated, which proves that the method proposed in this paper is effective.展开更多
基金Supported by Meteorological Data Sharing Center Project (2005DKA31700-01,GX07-01-01)2009 Specific Research in Non-profit Sector (200906041-053)
文摘Comparing and analyzing the difference between automatic-observed and manual-observed wind speed based on the wind speed parallel observations in two methods, we find that many elements can influence the difference between automatic-observed and manual-observed wind speed, including the levels of speed wind, observation instruments and different regions. According to these elements, correction has been conducted, and find that the correction according to the level of wind speed has the best correction effect.
文摘The creation of geometric model of a ship to determine the characteristics of hydrostatic and hydrodynamic, and also for structural design and equipments arrangement are so important in the ship design process. Planning tunnel high speed craft is one of the crafts in which, achievement to their top speed is more important. These crafts with the use of tunnel have the aero-hydrodynamics properties to diminish the resistance, good sea-keeping behavior, reduce slamming and avoid porpoising. Because of the existence of the tunnel, the hull form generation of these crafts is more complex and difficult. In this paper, it has attempted to provide a method based on geometry creation guidelines and with an entry of the least control and hull form adjustment parameters, to generate automatically the hull form of plarming tunnel craft. At first, the equations of mathematical model are described and subsequent, three different models generated based on present method are compared and analyzed. Obviously, the generated model has more application in the early stages of design.
文摘Objective: to explore the effect of pain nursing combined with intravenous self-controlled analgesia pump on promoting the recovery speed of parturients after cesarean section. Methods: the subjects of this experiment were 70 parturients who underwent cesarean section in Jiyang District People's Hospital of Ji’nan City, Shandong Province. The time interval was from April 2020 to March 2021. The cardinal number was assigned to the control group (routine care) and the even number was assigned to the observation group (pain care combined with intravenous automatic analgesia pump) with 35 cases in each group. The pain degree (VAS), incidence rate of pain side effects, physical rehabilitation speed, quality of life and nursing compliance of the two groups of parturients in different periods after operation were compared. Results: the VAS score of the observation group was lower than that of the control group (P<0.05), the incidence of pain and side effects of the observation group was lower than that of the control group (P0.05), the first time of exhausting air, removing urinary catheter, getting out of bed for the first time, the time of first lactation and the time of hospitalization of the observation group were shorter than that of the control group (P0.05), the quality of life of the observation group was higher than that of the control group (P0.05), and the compliance of the observation group in the implementation of clinical nursing work was higher than that of the control group (P0.05). Conclusion: pain nursing combined with intravenous self-controlled analgesia pump has good analgesic effect after cesarean section, and can promote the recovery rate of postpartum body, reduce the incidence of side effects, improve the nursing compliance of parturients and improve the quality of life of parturients. It is worthy of wide clinical application.
文摘This paper study and solve the design and manufacture of baby care car, its unique function is the baby carriage can be used as a baby bed, when necessary, it can also become a nursing car, sensor in the vehicle can be real-time detected whether the baby bed wetting and induction time will give parents information feedback; the humidity sensing probe controlled by single chip microcomputer and with the bottle clamp flexible connecting rod, can realize the baby auxiliary nurse; remote wireless commtmication system can allow parents to monitor children＇ s state. The design of intelligent baby carriage, to enhance the technological content of products, promote the innovation of design China bassinet production, has the important practical significance to seize the smart baby car market.
文摘With rapid development of the railway traffic, the moving block signaling system （MBS） method has become more and more important for increasing the track capacity by allowing trains to run in a shorter time-headway while maintaining the required safety margins. In this framework, the tracking target point of the following train is moving forward with its leading train. This paper focuses on the energy saving tracking control of two successive trains in MBS. Nonlinear programming method is used to optimize the energy-saving speed trajectory of the following train. The real-time location of the leading train could be integrated into the optimization process. Due to simplicity, it can be used for online implementation. The feasibility and effectiveness are verified through simulation. The results show that the new method is efficient on energy saving even when disturbances present.
文摘The automatic positioning control of mooring system for deepwater semi-submersible platform has become a key issue in the research and development field of deep-sea resources. The Dual- Stage Actuator (DSA) proposed in this paper can replace the single actuator to achieve the high speed and high precision positioning by cooperative control. The relative model and control algorithm of motion trajectory (CAMT) are designed and validated, which proves that the method proposed in this paper is effective.
