Objective:To explore the effects of problem-oriented nursing on self-efficacy and compliance behavior of patients undergoing coronary intervention.Methods:Seventy patients who underwent coronary intervention in a hosp...Objective:To explore the effects of problem-oriented nursing on self-efficacy and compliance behavior of patients undergoing coronary intervention.Methods:Seventy patients who underwent coronary intervention in a hospital from March 2024 to February 2025 were selected and divided into the control group(n=35)and the observation group(n=35)by using the randomized numeric table method.The control group implemented conventional clinical care,and the observation group was given problem-oriented nursing intervention on the basis of conventional care.The self-efficacy,negative psychological state,medical compliance behavior,and quality of life improvement of patients in the two groups were compared.Results:Before nursing intervention,the difference in the scores of patients’role function,symptom management,emotion management,nurse-patient communication and exchange and other dimensions between the control group and the observation group was not statistically significant(P>0.05).After nursing intervention,the scores of all indexes of the two groups were significantly higher,and the difference between the two groups was statistically significant(P<0.05).Before nursing intervention,the difference in the scores of patients’anxiety and depression status between the control group and the observation group was not statistical significance(P>0.05).However,after nursing intervention,the negative psychological state of the two groups improved significantly,and the difference between the groups was statistically significant(P<0.05).The total excellent rate of patients’compliance behavior in the observation group was 97.14%,which was significantly higher than that of the control group,which was 74.29%,with a statistically significant difference(P<0.05).The patients of the observation group had a higher psychological state,social function,physical condition,emotional condition and other dimension scores of patients in the observation group were significantly higher than those of the control group,and the difference was statistically significant(P<0.05).Conclusion:The implementation of problem-oriented nursing care for patients undergoing coronary intervention can not only significantly improve their self-efficacy and enhance their compliance behavior,but also positively improve their negative emotions of anxiety and depression,and improve their quality of life.展开更多
Problem-oriented teaching is a widely used teaching method in the process of nursing teaching so far, which is of great significance to nursing teaching. In this paper, four kinds of nursing intervention models, famil...Problem-oriented teaching is a widely used teaching method in the process of nursing teaching so far, which is of great significance to nursing teaching. In this paper, four kinds of nursing intervention models, family-centered nursing, evidence-based nursing, self-care and emotional nursing, were selected for classroom teaching in higher vocational colleges. The specific teaching significance of problem-oriented teaching in learning these four kinds of nursing intervention models was discussed respectively, so as to provide reference and guidance for clinical nursing. This article selected four common nursing interventions in clinical nursing: family-centered nursing and self-nursing, which are suitable for home relatives of discharged patients to take care of them or patients to take self-care after orthopedic replacement. Emotional nursing is suitable for psychological counseling of patients with benign and malignant tumors;Evidence-based nursing is suitable for clinical nursing intervention based on evidence, and is commonly used in TCM diagnosis and treatment.展开更多
With the development of fast communication technology between ego vehicle and other traffic participants,and automated driving technology,there is a big potential in the improvement of energy efficiency of hybrid elec...With the development of fast communication technology between ego vehicle and other traffic participants,and automated driving technology,there is a big potential in the improvement of energy efficiency of hybrid electric vehicles(HEVs).Moreover,the terrain along the driving route is a non-ignorable factor for energy efficiency of HEV running on the hilly streets.This paper proposes a look-ahead horizon-based optimal energy management strategy to jointly improve the efficiencies of powertrain and vehicle for connected and automated HEVs on the road with slope.Firstly,a rule-based framework is developed to guarantee the success of automated driving in the traffic scenario.Then a constrained optimal control problem is formulated to minimize the fuel consumption and the electricity consumption under the satisfaction of inter-vehicular distance constraint between ego vehicle and preceding vehicle.Both speed planning and torque split of hybrid powertrain are provided by the proposed approach.Moreover,the preceding vehicle speed in the look-ahead horizon is predicted by extreme learning machine with real-time data obtained from communication of vehicle-to-everything.The optimal solution is derived through the Pontryagin’s maximum principle.Finally,to verify the effectiveness of the proposed algorithm,a traffic-in-the-loop powertrain platform with data from real world traffic environment is built.It is found that the fuel economy for the proposed energy management strategy improves in average 17.0%in scenarios of different traffic densities,compared to the energy management strategy without prediction of preceding vehicle speed.展开更多
Jerched on the 18th parallel north-often called the“golden latitude”for its optimal climate and environment conditions,shared by renowned attractions like Bali in Indonesia,the Maldives,and Hawaii of the United Sta...Jerched on the 18th parallel north-often called the“golden latitude”for its optimal climate and environment conditions,shared by renowned attractions like Bali in Indonesia,the Maldives,and Hawaii of the United States—the southernmost Chinese island province of Hainan has,over the past few decades,garnered national acclaim for its thriving tourism,senior healthcare and cultural sectors.Recently,Hainan has also gained attention as a burgeoning hub for international education within China.展开更多
This article is based on remarks delivered by U Tin Maung Swe,Myanmar Ambassador to China,at the ASEAN-China(Beijing Municipal Administrative Center)Trade and Investment Promotion Conference,and has been edited for cl...This article is based on remarks delivered by U Tin Maung Swe,Myanmar Ambassador to China,at the ASEAN-China(Beijing Municipal Administrative Center)Trade and Investment Promotion Conference,and has been edited for clarity and readability.展开更多
Dear Editor,This letter studies the event-triggered adaptive horizon distributed model predictive control problem for discrete-time coupled nonlinear systems with additive disturbances.By constructing a new dualmodel ...Dear Editor,This letter studies the event-triggered adaptive horizon distributed model predictive control problem for discrete-time coupled nonlinear systems with additive disturbances.By constructing a new dualmodel optimal control problem,an event-triggered mechanism and an adaptive prediction horizon scheme are co-designed in the proposed scheme.Notably,the upper bound of the triggering interval remains independent of the dynamically shrinking prediction horizon.This enables the event-triggered mechanism to operate effectively even when the prediction horizon becomes zero,thus achieving cost savings throughout the control process.In addition,the sufficient conditions of the proposed scheme associated with the feasibility and stability are provided.The effectiveness is illustrated through a practical example.展开更多
Dialogue and fusion of horizons are two important concepts of Gadamer’s philosophical hermeneutics,which falls into the pedagogical category of teaching English News Listening Classes.The course of English News Liste...Dialogue and fusion of horizons are two important concepts of Gadamer’s philosophical hermeneutics,which falls into the pedagogical category of teaching English News Listening Classes.The course of English News Listening is one of the most fundamental and difficult courses in the curriculum for college students who are English majors.The simultaneous interpreting training method of shadowing is used in English News Listening Classes in helping students improve their language skill of listening and speaking.In fulfilling a teacher’s pedagogical performance of dialoguing and fusion of horizons,still one thing is important,i.e.,solidarity triggered between students and teacher,which is the good or the ethical choice between students and teacher.In English News Listening Classes,“道”or“the way(Dao)”is shadowing.In teaching English News Listening,a“dialogue”of shadowing could be achieved between students and teacher is even more significant than that of other courses.This paper intends to present the dialogic ethical triggering of fusion of horizons in class.In another word,students’knowing could be guided by teacher’s dialogic ethical triggering in English News classes.In voicing out the language,knowing in listening and speaking could help students have confidence in not only their language skills but in conquering their difficulties in their life.Teaching English News Listening at Northeastern University(NEU)in this way since 2013 has turned out to be good for students’growth and maturation in life.展开更多
Aiming at the missile avoidance problem of the unmanned aerial vehicle(UAV)in complex obstacle environments,this work proposes a collision-avoidance method based on receding horizon optimization.The proposed method ge...Aiming at the missile avoidance problem of the unmanned aerial vehicle(UAV)in complex obstacle environments,this work proposes a collision-avoidance method based on receding horizon optimization.The proposed method generated a specific trajectory for the UAV to effectively induce the proportional navigation missile to successfully intercept the obstacle,thereby accomplishing the evasive maneuver.The evasive maneuver was divided into two distinct stages,namely the collision-inducing phase and the fast departure phase.The obstacle potential field-based target selection algorithm was employed to identify the most appropriate target obstacle,while the induced trajectory was determined through a combination of receding horizon optimization and the hp-adaptive pseudo-spectral method.Simulation experiments were carried out under three different types of obstacle environments and one multiobstacle environment,and the simulation results show that the method proposed in this paper greatly improves the success rate of UAV evasive maneuvers,proving the effectiveness of this method.展开更多
This paper investigates an international optimal investmentCconsumption problem under a random time horizon.The investor may allocate wealth between a domestic bond and an international real project with production ou...This paper investigates an international optimal investmentCconsumption problem under a random time horizon.The investor may allocate wealth between a domestic bond and an international real project with production output,whose price may exhibit discontinuities.The model incorporates the effects of taxation and exchange rate dynamics,where the exchange rate follows a stochastic differential equation with jump-diffusion.The investor’s objective is to maximize the utility of consumption and terminal wealth over an uncertain investment horizon.It is worth noting that,under our framework,the exit time is not assumed to be a stopping time.In particular,for the case of constant relative risk aversion(CRRA),we derive the optimal investment and consumption strategies by applying the separation method to solve the associated HamiltonCJacobiCBellman(HJB)equation.Moreover,several numerical examples are provided to illustrate the practical applicability of the proposed results.展开更多
The reuse of liquid propellant rocket engines has increased the difficulty of their control and estimation.State and parameter Moving Horizon Estimation(MHE)is an optimization-based strategy that provides the necessar...The reuse of liquid propellant rocket engines has increased the difficulty of their control and estimation.State and parameter Moving Horizon Estimation(MHE)is an optimization-based strategy that provides the necessary information for model predictive control.Despite the many advantages of MHE,long computation time has limited its applications for system-level models of liquid propellant rocket engines.To address this issue,we propose an asynchronous MHE method called advanced-multi-step MHE with Noise Covariance Estimation(amsMHE-NCE).This method computes the MHE problem asynchronously to obtain the states and parameters and can be applied to multi-threaded computations.In the background,the state and covariance estimation optimization problems are computed using multiple sampling times.In real-time,sensitivity is used to quickly approximate state and parameter estimates.A covariance estimation method is developed using sensitivity to avoid redundant MHE problem calculations in case of sensor degradation during engine reuse.The amsMHE-NCE is validated through three cases based on the space shuttle main engine system-level model,and we demonstrate that it can provide more accurate real-time estimates of states and parameters compared to other commonly used estimation methods.展开更多
Obsessive-Compulsive Disorder(OCD)is a chronic and debilitating mental health condition that affects~2%to 3%of the global population[1],leading to significant functional impairment and reduced quality of life.Characte...Obsessive-Compulsive Disorder(OCD)is a chronic and debilitating mental health condition that affects~2%to 3%of the global population[1],leading to significant functional impairment and reduced quality of life.Characterized by intrusive thoughts and repetitive behaviors,OCD is typically managed with selective serotonin reuptake inhibitors(SSRIs)and cognitive-behavioral therapy,particularly exposure and response prevention.However,~25%to 40%of patients do not respond adequately to these firstline treatments,and many who do respond continue to experience residual symptoms[2].展开更多
Xi Jinping,general secretary of the Communist Party of China(CPC)Central Committee,delivered an important speech at the Commemoration of the 80th Anniversary of the Victory of the Chinese People’s War of Resistance A...Xi Jinping,general secretary of the Communist Party of China(CPC)Central Committee,delivered an important speech at the Commemoration of the 80th Anniversary of the Victory of the Chinese People’s War of Resistance Against Japanese Aggression(1931-1945)and the World Anti-Fascist War.展开更多
目前已有一些针对路径跟踪控制中信号时滞问题的研究工作,但这些工作大多针对某种特定的控制方法,而在路径跟踪控制方法中,非线性模型预测控制(Nonlinear model predictive control,NMPC)具有能够显式处理系统约束、便于实现多目标优化...目前已有一些针对路径跟踪控制中信号时滞问题的研究工作,但这些工作大多针对某种特定的控制方法,而在路径跟踪控制方法中,非线性模型预测控制(Nonlinear model predictive control,NMPC)具有能够显式处理系统约束、便于实现多目标优化、能够有效利用被控对象前方参考路径信息等优势,但是针对NMPC路径跟踪控制系统中时滞问题的研究较不成熟,制约了这种控制方法的实际应用.为解决上述问题,开展了以下研究工作.首先构建了能够较好地孤立出时滞影响的类车机器人路径跟踪控制系统.接着分析了信号时滞对NMPC路径跟踪控制系统的影响机理,即时滞会导致控制器产生的控制信号不能适应类车机器人在执行控制信号时所处的位置.然后提出了基于增长NMPC预测时域的时滞影响消减方法,即在迭代周期不变的情况下,在无时滞系统较优预测步数的基础上增加二倍时滞周期比以上的整数.最后通过计算机仿真和实验验证了提出方法的有效性.仿真和实验结果表明,信号时滞对NMPC路径跟踪控制系统存在影响,未考虑时滞的NMPC控制算法能够在无时滞系统中实现高精确性路径跟踪,而在有时滞系统中控制失效.通过增长预测时域可以有效消减信号时滞的影响,在信号时滞约为0.2 s的仿真与实验系统中,基于该方法的NMPC控制器可以保证路径跟踪控制的位移误差幅值不超过0.1258 m,航向误差幅值不超过0.0583 rad.展开更多
文摘Objective:To explore the effects of problem-oriented nursing on self-efficacy and compliance behavior of patients undergoing coronary intervention.Methods:Seventy patients who underwent coronary intervention in a hospital from March 2024 to February 2025 were selected and divided into the control group(n=35)and the observation group(n=35)by using the randomized numeric table method.The control group implemented conventional clinical care,and the observation group was given problem-oriented nursing intervention on the basis of conventional care.The self-efficacy,negative psychological state,medical compliance behavior,and quality of life improvement of patients in the two groups were compared.Results:Before nursing intervention,the difference in the scores of patients’role function,symptom management,emotion management,nurse-patient communication and exchange and other dimensions between the control group and the observation group was not statistically significant(P>0.05).After nursing intervention,the scores of all indexes of the two groups were significantly higher,and the difference between the two groups was statistically significant(P<0.05).Before nursing intervention,the difference in the scores of patients’anxiety and depression status between the control group and the observation group was not statistical significance(P>0.05).However,after nursing intervention,the negative psychological state of the two groups improved significantly,and the difference between the groups was statistically significant(P<0.05).The total excellent rate of patients’compliance behavior in the observation group was 97.14%,which was significantly higher than that of the control group,which was 74.29%,with a statistically significant difference(P<0.05).The patients of the observation group had a higher psychological state,social function,physical condition,emotional condition and other dimension scores of patients in the observation group were significantly higher than those of the control group,and the difference was statistically significant(P<0.05).Conclusion:The implementation of problem-oriented nursing care for patients undergoing coronary intervention can not only significantly improve their self-efficacy and enhance their compliance behavior,but also positively improve their negative emotions of anxiety and depression,and improve their quality of life.
文摘Problem-oriented teaching is a widely used teaching method in the process of nursing teaching so far, which is of great significance to nursing teaching. In this paper, four kinds of nursing intervention models, family-centered nursing, evidence-based nursing, self-care and emotional nursing, were selected for classroom teaching in higher vocational colleges. The specific teaching significance of problem-oriented teaching in learning these four kinds of nursing intervention models was discussed respectively, so as to provide reference and guidance for clinical nursing. This article selected four common nursing interventions in clinical nursing: family-centered nursing and self-nursing, which are suitable for home relatives of discharged patients to take care of them or patients to take self-care after orthopedic replacement. Emotional nursing is suitable for psychological counseling of patients with benign and malignant tumors;Evidence-based nursing is suitable for clinical nursing intervention based on evidence, and is commonly used in TCM diagnosis and treatment.
文摘With the development of fast communication technology between ego vehicle and other traffic participants,and automated driving technology,there is a big potential in the improvement of energy efficiency of hybrid electric vehicles(HEVs).Moreover,the terrain along the driving route is a non-ignorable factor for energy efficiency of HEV running on the hilly streets.This paper proposes a look-ahead horizon-based optimal energy management strategy to jointly improve the efficiencies of powertrain and vehicle for connected and automated HEVs on the road with slope.Firstly,a rule-based framework is developed to guarantee the success of automated driving in the traffic scenario.Then a constrained optimal control problem is formulated to minimize the fuel consumption and the electricity consumption under the satisfaction of inter-vehicular distance constraint between ego vehicle and preceding vehicle.Both speed planning and torque split of hybrid powertrain are provided by the proposed approach.Moreover,the preceding vehicle speed in the look-ahead horizon is predicted by extreme learning machine with real-time data obtained from communication of vehicle-to-everything.The optimal solution is derived through the Pontryagin’s maximum principle.Finally,to verify the effectiveness of the proposed algorithm,a traffic-in-the-loop powertrain platform with data from real world traffic environment is built.It is found that the fuel economy for the proposed energy management strategy improves in average 17.0%in scenarios of different traffic densities,compared to the energy management strategy without prediction of preceding vehicle speed.
文摘Jerched on the 18th parallel north-often called the“golden latitude”for its optimal climate and environment conditions,shared by renowned attractions like Bali in Indonesia,the Maldives,and Hawaii of the United States—the southernmost Chinese island province of Hainan has,over the past few decades,garnered national acclaim for its thriving tourism,senior healthcare and cultural sectors.Recently,Hainan has also gained attention as a burgeoning hub for international education within China.
文摘This article is based on remarks delivered by U Tin Maung Swe,Myanmar Ambassador to China,at the ASEAN-China(Beijing Municipal Administrative Center)Trade and Investment Promotion Conference,and has been edited for clarity and readability.
基金supported by the National Natural Science Foundation of China(62473265,62476176,12426311).
文摘Dear Editor,This letter studies the event-triggered adaptive horizon distributed model predictive control problem for discrete-time coupled nonlinear systems with additive disturbances.By constructing a new dualmodel optimal control problem,an event-triggered mechanism and an adaptive prediction horizon scheme are co-designed in the proposed scheme.Notably,the upper bound of the triggering interval remains independent of the dynamically shrinking prediction horizon.This enables the event-triggered mechanism to operate effectively even when the prediction horizon becomes zero,thus achieving cost savings throughout the control process.In addition,the sufficient conditions of the proposed scheme associated with the feasibility and stability are provided.The effectiveness is illustrated through a practical example.
基金Liaoning Province Education and Scientific Research Young and Middle-Aged Teachers Special Project:Innovative Research and Practice of Chunk-Based Interpreting Teaching for IP’s Curriculum(Fund No.:JG24QGA06).
文摘Dialogue and fusion of horizons are two important concepts of Gadamer’s philosophical hermeneutics,which falls into the pedagogical category of teaching English News Listening Classes.The course of English News Listening is one of the most fundamental and difficult courses in the curriculum for college students who are English majors.The simultaneous interpreting training method of shadowing is used in English News Listening Classes in helping students improve their language skill of listening and speaking.In fulfilling a teacher’s pedagogical performance of dialoguing and fusion of horizons,still one thing is important,i.e.,solidarity triggered between students and teacher,which is the good or the ethical choice between students and teacher.In English News Listening Classes,“道”or“the way(Dao)”is shadowing.In teaching English News Listening,a“dialogue”of shadowing could be achieved between students and teacher is even more significant than that of other courses.This paper intends to present the dialogic ethical triggering of fusion of horizons in class.In another word,students’knowing could be guided by teacher’s dialogic ethical triggering in English News classes.In voicing out the language,knowing in listening and speaking could help students have confidence in not only their language skills but in conquering their difficulties in their life.Teaching English News Listening at Northeastern University(NEU)in this way since 2013 has turned out to be good for students’growth and maturation in life.
基金Natural Science Foundation of Heilongjiang Province of China(Grant No.YQ2022F012)the Fundamental Research Funds for the Central Universities(Grant No.HIT.OCEF.2023010)to provide fund for conducting experiments.
文摘Aiming at the missile avoidance problem of the unmanned aerial vehicle(UAV)in complex obstacle environments,this work proposes a collision-avoidance method based on receding horizon optimization.The proposed method generated a specific trajectory for the UAV to effectively induce the proportional navigation missile to successfully intercept the obstacle,thereby accomplishing the evasive maneuver.The evasive maneuver was divided into two distinct stages,namely the collision-inducing phase and the fast departure phase.The obstacle potential field-based target selection algorithm was employed to identify the most appropriate target obstacle,while the induced trajectory was determined through a combination of receding horizon optimization and the hp-adaptive pseudo-spectral method.Simulation experiments were carried out under three different types of obstacle environments and one multiobstacle environment,and the simulation results show that the method proposed in this paper greatly improves the success rate of UAV evasive maneuvers,proving the effectiveness of this method.
基金Supported by the Shandong Provincial Natural Science Foundation(ZR2024MA095)Natural Science Foun-dation of China(12401583)Basic Research Program of Jiangsu(BK20240416).
文摘This paper investigates an international optimal investmentCconsumption problem under a random time horizon.The investor may allocate wealth between a domestic bond and an international real project with production output,whose price may exhibit discontinuities.The model incorporates the effects of taxation and exchange rate dynamics,where the exchange rate follows a stochastic differential equation with jump-diffusion.The investor’s objective is to maximize the utility of consumption and terminal wealth over an uncertain investment horizon.It is worth noting that,under our framework,the exit time is not assumed to be a stopping time.In particular,for the case of constant relative risk aversion(CRRA),we derive the optimal investment and consumption strategies by applying the separation method to solve the associated HamiltonCJacobiCBellman(HJB)equation.Moreover,several numerical examples are provided to illustrate the practical applicability of the proposed results.
基金supported by the National Natural Science Foundation of China(Nos.62120106003 and 62173301)。
文摘The reuse of liquid propellant rocket engines has increased the difficulty of their control and estimation.State and parameter Moving Horizon Estimation(MHE)is an optimization-based strategy that provides the necessary information for model predictive control.Despite the many advantages of MHE,long computation time has limited its applications for system-level models of liquid propellant rocket engines.To address this issue,we propose an asynchronous MHE method called advanced-multi-step MHE with Noise Covariance Estimation(amsMHE-NCE).This method computes the MHE problem asynchronously to obtain the states and parameters and can be applied to multi-threaded computations.In the background,the state and covariance estimation optimization problems are computed using multiple sampling times.In real-time,sensitivity is used to quickly approximate state and parameter estimates.A covariance estimation method is developed using sensitivity to avoid redundant MHE problem calculations in case of sensor degradation during engine reuse.The amsMHE-NCE is validated through three cases based on the space shuttle main engine system-level model,and we demonstrate that it can provide more accurate real-time estimates of states and parameters compared to other commonly used estimation methods.
基金supported by the STI2030-Major Projects(2021ZD0203000(2021ZD0203003))the Chinese Academy of Sciences(CAS)Pioneer Hundred Talents Program,and the Open Research Fund of the State Key Laboratory of Brain-Machine Intelligence,Zhejiang University(BMI2400014).
文摘Obsessive-Compulsive Disorder(OCD)is a chronic and debilitating mental health condition that affects~2%to 3%of the global population[1],leading to significant functional impairment and reduced quality of life.Characterized by intrusive thoughts and repetitive behaviors,OCD is typically managed with selective serotonin reuptake inhibitors(SSRIs)and cognitive-behavioral therapy,particularly exposure and response prevention.However,~25%to 40%of patients do not respond adequately to these firstline treatments,and many who do respond continue to experience residual symptoms[2].
文摘Xi Jinping,general secretary of the Communist Party of China(CPC)Central Committee,delivered an important speech at the Commemoration of the 80th Anniversary of the Victory of the Chinese People’s War of Resistance Against Japanese Aggression(1931-1945)and the World Anti-Fascist War.
