Background:Doctoral students have much higher risk of anxiety or depression than general population.Doctoral students worldwide are facing varying degrees of mental health risks.Method:Based on the survey data of 6,81...Background:Doctoral students have much higher risk of anxiety or depression than general population.Doctoral students worldwide are facing varying degrees of mental health risks.Method:Based on the survey data of 6,812 doctoral students worldwide in Nature in 2019,Probit and Logit models are used to explore the correlation between thefit of doctoral education and training process and the mental health of doctoral students.Results:(1)The training environmentfit of doctoral students has a significant positive impact on their mental health.(2)The academic professionfit of doctoral students has a significant positive impact on their mental health.(3)The orga-nizational culturefit of doctoral students has a significant positive impact on their mental health.(4)Thefinancial supportfit of doctoral students has a significant positive impact on their mental health.Conclusion:The higher the degree of doctoral students’training environmentfit,academic professionfit,organizational culturefit,andfinancial supportfit,the lower the possibility of anxiety or depression among doctoral students.The current research results can help reveal extensive factors that affect the mental health of doctoral students,facilitate the planning and development of effective intervention measures by universities,improve thefit of the doctoral education and training process,improve the mental health of doctoral students,and boost academic excellence.展开更多
The chemical oxygen demand (COD) is selected as the index in this paper. The system dynamics method is used to analyze the emission right price of medical sewage, the boundary of the emission right price system is det...The chemical oxygen demand (COD) is selected as the index in this paper. The system dynamics method is used to analyze the emission right price of medical sewage, the boundary of the emission right price system is determined, and the system dynamics model of the initial emission right of medical sewage is constructed, in which the system is divided into water resources subsystem, population subsystem, economic subsystem and social subsystem. It is expected to expand the theory of the system modeling of the initial discharge right of medical sewage, and to provide the basis for the relevant decision of the environmental management authorities.展开更多
文摘Background:Doctoral students have much higher risk of anxiety or depression than general population.Doctoral students worldwide are facing varying degrees of mental health risks.Method:Based on the survey data of 6,812 doctoral students worldwide in Nature in 2019,Probit and Logit models are used to explore the correlation between thefit of doctoral education and training process and the mental health of doctoral students.Results:(1)The training environmentfit of doctoral students has a significant positive impact on their mental health.(2)The academic professionfit of doctoral students has a significant positive impact on their mental health.(3)The orga-nizational culturefit of doctoral students has a significant positive impact on their mental health.(4)Thefinancial supportfit of doctoral students has a significant positive impact on their mental health.Conclusion:The higher the degree of doctoral students’training environmentfit,academic professionfit,organizational culturefit,andfinancial supportfit,the lower the possibility of anxiety or depression among doctoral students.The current research results can help reveal extensive factors that affect the mental health of doctoral students,facilitate the planning and development of effective intervention measures by universities,improve thefit of the doctoral education and training process,improve the mental health of doctoral students,and boost academic excellence.
文摘The chemical oxygen demand (COD) is selected as the index in this paper. The system dynamics method is used to analyze the emission right price of medical sewage, the boundary of the emission right price system is determined, and the system dynamics model of the initial emission right of medical sewage is constructed, in which the system is divided into water resources subsystem, population subsystem, economic subsystem and social subsystem. It is expected to expand the theory of the system modeling of the initial discharge right of medical sewage, and to provide the basis for the relevant decision of the environmental management authorities.