This paper addresses the development and testing of a remotely controlled boat platform with an innovative air-ventilated hull. The application of air cavities on the underside of ship hulls is a promising means for r...This paper addresses the development and testing of a remotely controlled boat platform with an innovative air-ventilated hull. The application of air cavities on the underside of ship hulls is a promising means for reducing hydrodynamic drag and pollutant emissions and increasing marine transportation efficiency. Despite this concept＇s potential, design optimization and high-performance operation of novel air-cavity ships remain a challenging problem. Hull construction and sensor instrumentation of the model-scale air-cavity boat is described in the paper. The modular structure of the hull allows for easy modifications, and an electric propulsion unit enables self-propelled operation. The boat is controlled remotely via a radio transmission system. Results of initial tests are reported, including thrust, speed, and airflow rate in several loading conditions. The constructed platform can be used for optimizing air-cavity systems and testing other innovative hull designs. This system can be also developed into a high-performance unmanned boat.展开更多
In the development of robotic limbs, the side of members is of importance to define the shape of artificial limbs and the range of movements. It is mainly significant tbr biomedical applications concerning patients su...In the development of robotic limbs, the side of members is of importance to define the shape of artificial limbs and the range of movements. It is mainly significant tbr biomedical applications concerning patients suffering arms or legs injuries, fn this paper, the concept of an ambidextrous design lbr robot hands is introduced. The fingers can curl in one xvay or another, to imitate either a right hand or a left hand. The advantages and inconveniences of different models have been investigated to optimise the range and the maximum force applied by fingers. Besides, a remote control interthce is integrated to the system, allowing both to send comrnands through internet and to display a video streaming of the ambidextrous hand as feedback. Therefore, a robotic prosthesis could be used for the first time in telerehabilitation. The main application areas targeted are physiotherapy alter strokes or management of phantom pains/br amputees by/earning to control the ambidextrous hand. A client application is also accessible on Facehook social network, making the robotic limb easily reachable for the patients. Additionally the ambidextrous hand can be used tbr robotics research as well as artistic performances.展开更多
This paper introduces the high-speed electrical multiple unit （EMO） life cycle, including the design, manufacturing, testing, and maintenance stages. It also presents the train control and monitoring system （TCMS）...This paper introduces the high-speed electrical multiple unit （EMO） life cycle, including the design, manufacturing, testing, and maintenance stages. It also presents the train control and monitoring system （TCMS） software development platform, the TCMS testing and verification bench, the EMU driving simulation platform, and the EMU remote data transmittal and maintenance platform. All these platforms and benches combined together make up the EMU life cycle cost （LCC） system. Each platform facilitates EMU LCC management and is an important part of the system.展开更多
Background:Patient-ventilator asynchrony(PVA)is common in critically ill patients undergoing mechanical ventilation and may adversely affect clinical outcomes.Traditional bedside assessment methods are subjective and ...Background:Patient-ventilator asynchrony(PVA)is common in critically ill patients undergoing mechanical ventilation and may adversely affect clinical outcomes.Traditional bedside assessment methods are subjective and intermittent.We developed a real-time digital platform to continuously monitor ventilator waveforms and quantify overall asynchrony burden of severe pneumonia patients.Methods:The study retrospectively analyzed mechanically ventilated coronavirus disease 2019(COVID-19 patients admitted to the Department of Critical Care Medicine of Peking Union Medical College Hospital(PUMCH)from December 2022 to August 2023.Ventilator waveforms were continuously collected and processed using the remote ventilate view platform,which automatically identified eight PVA subtypes and calculated the Overall Asynchrony Index(OAI)across the full ventilation course.Respiratory mechanics were also extracted.Primary outcomes included intensive care unit(ICU)mortality and 28-day ventilator-free days(VFDs),while secondary outcomes included the length of ICU stay and duration of mechanical ventilation.The study used R,Jamovi,and Python for statistical analysis.Results:Twenty-three mechanically ventilated COVID-19 patients admitted to the ICU at Peking Union Medical College Hospital were included in this study.No correlation was found between the index and ventilatory parameters,compliance,and disease severity.Patients with an OAI≥10%were more likely to have fewer 28-day VFDs(1.3 days vs.11.4 days,P=0.027)and were demonstrated to have a higher ICU mortality(66.7%vs.18.2%,P=0.036).Among eight types of PVA,flow insufficiency was found to be associated with prognosis(P=0.012).OAI correlated with the prognosis of COVID-19 patients.Patients with an OAI≥10%were more likely to have fewer 28-day VFDs and higher ICU mortality.Conclusions:A higher OAI and increased flow insufficiency were associated with worse outcomes in COVID-19 patients receiving mechanical ventilation.This study demonstrates the feasibility and clinical potential of a real-time,platform-based approach for automated detection and longitudinal monitoring of PVA.展开更多
基金Foundation item： Supported by the National Science Foundation （CMMI-1026264 and EEC-1157094）.
文摘This paper addresses the development and testing of a remotely controlled boat platform with an innovative air-ventilated hull. The application of air cavities on the underside of ship hulls is a promising means for reducing hydrodynamic drag and pollutant emissions and increasing marine transportation efficiency. Despite this concept＇s potential, design optimization and high-performance operation of novel air-cavity ships remain a challenging problem. Hull construction and sensor instrumentation of the model-scale air-cavity boat is described in the paper. The modular structure of the hull allows for easy modifications, and an electric propulsion unit enables self-propelled operation. The boat is controlled remotely via a radio transmission system. Results of initial tests are reported, including thrust, speed, and airflow rate in several loading conditions. The constructed platform can be used for optimizing air-cavity systems and testing other innovative hull designs. This system can be also developed into a high-performance unmanned boat.
文摘In the development of robotic limbs, the side of members is of importance to define the shape of artificial limbs and the range of movements. It is mainly significant tbr biomedical applications concerning patients suffering arms or legs injuries, fn this paper, the concept of an ambidextrous design lbr robot hands is introduced. The fingers can curl in one xvay or another, to imitate either a right hand or a left hand. The advantages and inconveniences of different models have been investigated to optimise the range and the maximum force applied by fingers. Besides, a remote control interthce is integrated to the system, allowing both to send comrnands through internet and to display a video streaming of the ambidextrous hand as feedback. Therefore, a robotic prosthesis could be used for the first time in telerehabilitation. The main application areas targeted are physiotherapy alter strokes or management of phantom pains/br amputees by/earning to control the ambidextrous hand. A client application is also accessible on Facehook social network, making the robotic limb easily reachable for the patients. Additionally the ambidextrous hand can be used tbr robotics research as well as artistic performances.
文摘This paper introduces the high-speed electrical multiple unit （EMO） life cycle, including the design, manufacturing, testing, and maintenance stages. It also presents the train control and monitoring system （TCMS） software development platform, the TCMS testing and verification bench, the EMU driving simulation platform, and the EMU remote data transmittal and maintenance platform. All these platforms and benches combined together make up the EMU life cycle cost （LCC） system. Each platform facilitates EMU LCC management and is an important part of the system.
基金This work was supported by CAMS Innovation Fund for Medical Sciences(CIFMS)(Funding Number:2023-I2M-CT-B-031&2025-I2M-C&T-A-004)National High-Level Hospital Clinical Research Funding(Funding Number:2022-PUMCH-D-005,2025-PUMCH-C-036).
文摘Background:Patient-ventilator asynchrony(PVA)is common in critically ill patients undergoing mechanical ventilation and may adversely affect clinical outcomes.Traditional bedside assessment methods are subjective and intermittent.We developed a real-time digital platform to continuously monitor ventilator waveforms and quantify overall asynchrony burden of severe pneumonia patients.Methods:The study retrospectively analyzed mechanically ventilated coronavirus disease 2019(COVID-19 patients admitted to the Department of Critical Care Medicine of Peking Union Medical College Hospital(PUMCH)from December 2022 to August 2023.Ventilator waveforms were continuously collected and processed using the remote ventilate view platform,which automatically identified eight PVA subtypes and calculated the Overall Asynchrony Index(OAI)across the full ventilation course.Respiratory mechanics were also extracted.Primary outcomes included intensive care unit(ICU)mortality and 28-day ventilator-free days(VFDs),while secondary outcomes included the length of ICU stay and duration of mechanical ventilation.The study used R,Jamovi,and Python for statistical analysis.Results:Twenty-three mechanically ventilated COVID-19 patients admitted to the ICU at Peking Union Medical College Hospital were included in this study.No correlation was found between the index and ventilatory parameters,compliance,and disease severity.Patients with an OAI≥10%were more likely to have fewer 28-day VFDs(1.3 days vs.11.4 days,P=0.027)and were demonstrated to have a higher ICU mortality(66.7%vs.18.2%,P=0.036).Among eight types of PVA,flow insufficiency was found to be associated with prognosis(P=0.012).OAI correlated with the prognosis of COVID-19 patients.Patients with an OAI≥10%were more likely to have fewer 28-day VFDs and higher ICU mortality.Conclusions:A higher OAI and increased flow insufficiency were associated with worse outcomes in COVID-19 patients receiving mechanical ventilation.This study demonstrates the feasibility and clinical potential of a real-time,platform-based approach for automated detection and longitudinal monitoring of PVA.
