Despite the stigma that is associated with law enforcement officers receiving mental health resources and treatment to combat secondary traumatic stress,it is widely the most effective form for recovery and having a f...Despite the stigma that is associated with law enforcement officers receiving mental health resources and treatment to combat secondary traumatic stress,it is widely the most effective form for recovery and having a fulfilling career.Law enforcement officers are superheroes and,they are known for saving the day.That is why it is critical for mental health offerings to be normalized in law enforcement agencies and constant evaluation of the psychological and cognitive well-being of officers.Unfortunately,the stress of the profession will not go away,but having resources and incentives to address several factors that officers face will assist with their overall feeling about the important work they do.As such,it is recommended that law enforcement agencies adopt programs to treat secondary traumatic stress,such as Critical Incident Stress Debriefing,Peer-Support Program,and Crisis Intervention Team.While there is no perfect program,these programs are designed to reduce the risk of serious injury or death during an emergency interaction between citizens and law enforcement officers.Ultimately,it is the responsibility of those charged with protecting law enforcement officers to understand the stress and how it affects the mind and body of those officers in managing life,work,and citizens.展开更多
A split Hopkinson pressure bar(SHPB)device in two-by-two form,including the bar bundle form and the single cylindrical bar form,was designed in response to the demand for the dynamic mechanical experiments for brittle...A split Hopkinson pressure bar(SHPB)device in two-by-two form,including the bar bundle form and the single cylindrical bar form,was designed in response to the demand for the dynamic mechanical experiments for brittle materials such as concrete,rock,etc.The stress waveforms generated through a projectile impacting two different types of incident bars have been studied based on the one-dimensional stress wave theory and numerical simulation method.At last,based on the established two types of mesoscale concrete models with random convex polyhedral aggregates,we performed comparison analysis of SHPB numerical simulations for concrete materials with bar bundle and single cylindrical bar separately,so as to provide technical support for the manufacture and development of this experimental device.The results showed that the introduced two-by-two form SHPB device expanded the scope of practical application,and the wave dispersion effect existing in a large-diameter bar can be evidently reduced when we employed the bar bundle form,indicating its applicability to the dynamic mechanical experiments of concrete-like heterogeneous materials.展开更多
Public emergencies exert a significant impact on the mental health of the people,while psychological crisis intervention can efficiently improve the level of the mental health. The existing psychological crisis interv...Public emergencies exert a significant impact on the mental health of the people,while psychological crisis intervention can efficiently improve the level of the mental health. The existing psychological crisis intervention in China has weakness in organization system,budget input,human resources,social cognition,and other aspects. The psychological crisis intervention work in the future can be performed by actively perfecting the organization management system of psychological crisis intervention,increasing the budget input,strengthening the construction of psychological intervention teams,improving the level of social cognition,and so on.展开更多
文摘Despite the stigma that is associated with law enforcement officers receiving mental health resources and treatment to combat secondary traumatic stress,it is widely the most effective form for recovery and having a fulfilling career.Law enforcement officers are superheroes and,they are known for saving the day.That is why it is critical for mental health offerings to be normalized in law enforcement agencies and constant evaluation of the psychological and cognitive well-being of officers.Unfortunately,the stress of the profession will not go away,but having resources and incentives to address several factors that officers face will assist with their overall feeling about the important work they do.As such,it is recommended that law enforcement agencies adopt programs to treat secondary traumatic stress,such as Critical Incident Stress Debriefing,Peer-Support Program,and Crisis Intervention Team.While there is no perfect program,these programs are designed to reduce the risk of serious injury or death during an emergency interaction between citizens and law enforcement officers.Ultimately,it is the responsibility of those charged with protecting law enforcement officers to understand the stress and how it affects the mind and body of those officers in managing life,work,and citizens.
基金This work was supported by the National Natural Science Foundation of China(Grant Nos.51971188 and 51071134)the Science and Technology Major Project of Hunan Province(Grant No.2019GK1012)Huxiang High-Level Talent Gathering Program of Hunan Province-Innovative team(Grant No.2019RS1059).All these supports are acknowledged.
文摘A split Hopkinson pressure bar(SHPB)device in two-by-two form,including the bar bundle form and the single cylindrical bar form,was designed in response to the demand for the dynamic mechanical experiments for brittle materials such as concrete,rock,etc.The stress waveforms generated through a projectile impacting two different types of incident bars have been studied based on the one-dimensional stress wave theory and numerical simulation method.At last,based on the established two types of mesoscale concrete models with random convex polyhedral aggregates,we performed comparison analysis of SHPB numerical simulations for concrete materials with bar bundle and single cylindrical bar separately,so as to provide technical support for the manufacture and development of this experimental device.The results showed that the introduced two-by-two form SHPB device expanded the scope of practical application,and the wave dispersion effect existing in a large-diameter bar can be evidently reduced when we employed the bar bundle form,indicating its applicability to the dynamic mechanical experiments of concrete-like heterogeneous materials.
基金supported by Specialist construction program of Jiading District Mental Health Center(No.:JDYXZDZK-3)Hospital-level program of Jiading District Mental Health Center(No.:2013-04)
文摘Public emergencies exert a significant impact on the mental health of the people,while psychological crisis intervention can efficiently improve the level of the mental health. The existing psychological crisis intervention in China has weakness in organization system,budget input,human resources,social cognition,and other aspects. The psychological crisis intervention work in the future can be performed by actively perfecting the organization management system of psychological crisis intervention,increasing the budget input,strengthening the construction of psychological intervention teams,improving the level of social cognition,and so on.
