<strong>Objective:</strong> We assess the application effect of the “3 + 1” mode in the COVID-19 epidemic prevention and control at the infection ward of a designated comprehensive hospital for COVID-19 ...<strong>Objective:</strong> We assess the application effect of the “3 + 1” mode in the COVID-19 epidemic prevention and control at the infection ward of a designated comprehensive hospital for COVID-19 treatment.<strong> Method: </strong>Based on the features of the inpatients of the infection ward and their relatives, a “3 + 1” mode for the COVID-19 prevention and control is developed to conform to the demands for epidemic prevention and control and the overall prevention and control scheme of the whole hospital. Here, “3” stands for the epidemic prevention and control system, personnel management, and prevention and control measures;“1” stands for COVID-19 testing.<strong> Result: </strong>From March 1, 2020 to March 31, 2021, a total of 3056 patients were hospitalized in the three infection wards. Among them, 265 patients had a fever, and 113 patients had respiratory symptoms. None of them were infected with COVID-19. The participation rate of the test about the knowledge related to COVID-19 and the knowledge mastery rate were both 100% among the medical staff. None of the inpatients and their companions or the medical staff was diagnosed with COVID-19.<strong> Conclusion: </strong>Thus the “3 + 1” mode proves successful for avoiding nosocomial infection and the spread of the epidemic.展开更多
During epidemic,students in medium-risk or high-risk areas are unable to return to school on time.In response to this new challenge,there is an urgent need to create a new teaching mode to offer on-line courses to tho...During epidemic,students in medium-risk or high-risk areas are unable to return to school on time.In response to this new challenge,there is an urgent need to create a new teaching mode to offer on-line courses to those absent from the offline classes,and we propose a model integrating online and offline teaching.It is based on“dual-camera”method,which allows off-campus students to virtually build up a physical classroom scenario on campus through computers and mobile phones.Using this model,students can participate in class remotely.In order to enhance the engagement of off-campus online students,emphasis is placed on interactive teaching.Teachers are required to design their teaching in advance and to work in collaboration with multiple departments,then using information technology and suitable teaching methods to enable students to participate in physical classroom teaching.This model has been tested in practice and has been successful in meeting the challenges.Finally,4 areas for improvement and refinement are identified.展开更多
BACKGROUND Coronavirus disease 2019(COVID-19)is an emerging,rapidly evolving disease that spreads through the respiratory system and is highly contagious.In March 2020,the World Health Organization declared the COVID-...BACKGROUND Coronavirus disease 2019(COVID-19)is an emerging,rapidly evolving disease that spreads through the respiratory system and is highly contagious.In March 2020,the World Health Organization declared the COVID-19 outbreak a pandemic.In China,the pandemic was controlled after 2 mo through effective policies and containment measures.Describing the detailed policies and containment measures used to control the epidemic in Chongqing will provide a reference for the prevention and control of COVID-19 in other areas of the world.AIM To explore the effects of different policies and containment measures on the control of the COVID-19 epidemic in Chongqing.METHODS Epidemiological data on COVID-19 in Chongqing were prospectively collected from January 21 to March 15,2020.The policies and prevention measures implemented by the government during the epidemic period were also collected.Trend analysis was performed to explore the impact of the main policy measures on the effectiveness of the control of COVID-19 in Chongqing.As of March 15,the cumulative incidence of COVID-19 in Chongqing was 1.84/100000(576 cases)and the infection fatality rate was 1.04%(6/576).The spread of COVID-19 was controlled by effective policies that involved establishing a group for directing the COVID-19 epidemic control effort;strengthening guidance and supervision;ensuring the supply of daily necessities and medical supplies and equipment to residents;setting up designated hospitals;implementing legal measures;and enhancing health education.Medical techniques were implemented to improve the recovery rate and control the epidemic.Policies such as“the lockdown of Wuhan”,“initiating a first-level response to major public health emergencies”,and“implementing the closed management of residential communities”significantly curbed the spread of COVID-19.Optimizing the diagnosis process,shortening the diagnosis time,and constructing teams of clinical experts facilitated the provision of“one team of medical experts for each patient”treatment for severe patients,which significantly improved the recovery rate and reduced the infection fatality rate.CONCLUSION The prevention policies and containment measures implemented by the government and medical institutions are highly effective in controlling the spread of the epidemic and increasing the recovery rate of COVID-19 patients.展开更多
The outbreak of COVID-19 at the beginning of 2020 has a great impact on public health security at home and abroad.Community is the basic unit of urban epidemic prevention,and improving community resilience is of great...The outbreak of COVID-19 at the beginning of 2020 has a great impact on public health security at home and abroad.Community is the basic unit of urban epidemic prevention,and improving community resilience is of great significance for reducing the spread of the epidemic and maintaining the normal life of residents during the epidemic.Based on the concept of resilience,10 indicators were selected from four dimensions of urban space,including facilities,space,nature and society,to construct a community resilience evaluation indicator system for epidemic prevention,and 56 housing estates in Congtai District,Handan City,were selected for scientific evaluation.The results showed that the overall resilience of this region was relatively low and the resilience index decreased from southwest to northeast with the degree of urban development.The accessibility of urban open space,the proportion of redundant space area and the area of public space per capita had the lowest resilience index.Finally,policy suggestions were put forward to improve the resilience of housing estates in the region,so as to promote the steady progress of the city towards the agenda for sustainable development.展开更多
BACKGROUND During the coronavirus disease 2019(COVID-19)pandemic,traditional teaching methods were disrupted and online teaching became a new topic in education reform and informatization.In this context,it is importa...BACKGROUND During the coronavirus disease 2019(COVID-19)pandemic,traditional teaching methods were disrupted and online teaching became a new topic in education reform and informatization.In this context,it is important to investigate the necessity and effectiveness of online teaching methods for medical students.This study explored stomatology education in China to evaluate the development and challenges facing the field using massive open online courses(MOOCs)for oral medicine education during the pandemic.AIM To investigate the current situation and challenges facing stomatology education in China,and to assess the necessity and effectiveness of online teaching methods among medical students.METHODS Online courses were developed and offered on personal computers and mobile terminals.Behavioral analysis and formative assessments were conducted to evaluate the learning status of students.RESULTS The results showed that most learners had already completed MOOCs and achieved better results.Course behavior analysis and student surveys indicated that students enjoyed the learning experience.However,the development of oral MOOCs during the COVID-19 pandemic faced significant challenges.CONCLUSION This study provides insights into the potential of using MOOCs to support online professional learning and future teaching innovation,but emphasizes the need for careful design and positive feedback to ensure their success.展开更多
As a fundamental logistics service,the express delivery(ED)industry provides production and consumption activities to maintain efficient supply chain operations.It plays an important role in promoting industrial devel...As a fundamental logistics service,the express delivery(ED)industry provides production and consumption activities to maintain efficient supply chain operations.It plays an important role in promoting industrial development and maintaining daily life and consumption.This study examined the effects of COVID-19 on the ED industry using ED package delivery data from 31 provinces(autonomous regions and municipalities)in China.Using a difference-in-differences method,the COVID-19 outbreak was found to have a positive effect and epidemic prevention and control(EPC)policies were found to have negative effects on the development of the ED industry.In addition to EPC policies,the Chinese government has implemented other short-term economic interventions(SEI),such as the resumption of work and production(RWP),policies to balance economic growth,and epidemic prevention.This study divided the pandemic period into three stages to analyze the different impacts of EPC and SEI policy changes on the ED industry.The RWP policies adopted during the pandemic positively impacted the volume and income of packages delivered to the ED industry.The conclusions of this study are significant for the ED industry in addressing public health emergencies and for the Chinese government to formulate EPC and SEI policies during epidemic periods.展开更多
Information fusion is very effective and necessary to respond to a public epidemic outbreak such as COVID-19.Big data intelligent,as a product of information fusion,plays an important role in the prevention and contro...Information fusion is very effective and necessary to respond to a public epidemic outbreak such as COVID-19.Big data intelligent,as a product of information fusion,plays an important role in the prevention and control of COVID-19.The continuous mechanism of big data intelligent innovation(BDII)is fundamental to effectively prevent and control a public epidemic outbreak.In this study,the continuous mechanism of BDII was fused into a complex network,and a three-dimensional collaborative epidemic prevention model was constructed.Furthermore,adiabatic elimination principle was applied to explore the order parameter of the continuous mechanism.Finally,empirical analysis was conducted based on three-stage epidemic prevention strategies to reveal the effect of continuous epidemic prevention under different big data intelligent emergency management policy levels.The results of this study are as follows.Through the mutual influence and coupling of the subsystems,the continuous mechanism of BDII can be realized to manage a public epidemic outbreak emergency.The big data intelligent subsystem is integrated into the subsystems of public epidemic outbreak management and science and technology innovation.The big data intelligent emergency management policies play a positive role in the overall BDII for the continuous epidemic prevention of a public epidemic outbreak.The convention of BDII transformation is the continuous mechanism of BDII as the order parameter of a public epidemic outbreak.In the early stage of epidemic prevention,the convention is excessively pursued,while the neglect of BDII configuration is not conducive to the long-term collaborative governance of a public epidemic outbreak.The study provides practical guidelines for the formulation of fusion innovation policies,application of big data intelligent,and theoretical basis for the emergency management of a public epidemic outbreak in the medical field.展开更多
In a context of a virus that is transmissive by sputtering,wearing masks appear necessary to protect the wearer and to limit the propagation of the disease.Currently,we are facing the 2019-2020 coronavirus pandemic.Co...In a context of a virus that is transmissive by sputtering,wearing masks appear necessary to protect the wearer and to limit the propagation of the disease.Currently,we are facing the 2019-2020 coronavirus pandemic.Coronavirus disease 2019(COVID-19)is an infectious disease with first symptoms similar to the flu.The symptom of COVID-19 was reported first in China and very quickly spreads to the rest of the world.The COVID-19 contagiousness is known to be high by comparison with the flu.In this paper,we propose a design of a mobile application for permitting everyone having a smartphone and being able to take a picture to verify that his/her protection mask is correctly positioned on his/her face.Such application can be particularly useful for people using face protection mask for the first time and notably for children and old people.The designed method exploits Haar-like feature descriptors to detect key features of the face and a decision-making algorithm is applied.Experimental results show the potential of this method in the validation of the correct mask wearing.To the best of our knowledge,our work is the only one that currently proposes a mobile application design“CheckYourMask”for validating the correct wearing of protection mask.展开更多
The coronavirus disease 2019 was first reported in Wuhan in December 2019 and then spread rapidly throughout the world.On March 11,2020,the World Health Organization declared coronavirus disease 2019 a pandemic.In res...The coronavirus disease 2019 was first reported in Wuhan in December 2019 and then spread rapidly throughout the world.On March 11,2020,the World Health Organization declared coronavirus disease 2019 a pandemic.In response to the pandemic,the management division of West China Hospital oversaw the implementation of hospital-wide emergency measures.In accordance with these measures,the hospital's thoracic surgery ward implemented a new management system by reformulating staff training plans,patient admission procedures,and other systems for managing the ward and protecting perioperative patients.Overall,the ward was successful in restoring normal working order,protecting all staff from occupational exposures,and ensuring the safety of inpatients and their families.展开更多
Under the condition of normalized epidemic,how athletes train and compete well has been in the spotlight.This article reported the symptom,hospitalization and training situation of seven confirmed cases of coronavirus...Under the condition of normalized epidemic,how athletes train and compete well has been in the spotlight.This article reported the symptom,hospitalization and training situation of seven confirmed cases of coronavirusdisease-2019(COVID-19)among Chinese national teams.Moreover,the paper summarized the experience of Chinese national teams in terms of epidemic prevention and control,treatment of infection,and safe return to play.Through a scientific combination of medication and non-medical treatment,seven athletes were all discharged from the hospital.These discharged athletes underwent strict isolation and scientific training before returning to sports teams.Before returning to play,continuous monitoring of physical and mental condition was required.All seven athletes returned to play safely and performed excellently.As for hosting large-scale sporting events,the entire enclosed-loop management from immigration to competition was proposed in this paper.This study could serve as a standard of epidemic prevention and control,treatment for infection and safe return to play during competition and training around the world.展开更多
Spain is among the countries worst hit by the Covid-19 pandemic,with one of the highest rate of infections and deaths per million inhabitants.First positive was reported on late January 2020.Mid March,with 7,000 confi...Spain is among the countries worst hit by the Covid-19 pandemic,with one of the highest rate of infections and deaths per million inhabitants.First positive was reported on late January 2020.Mid March,with 7,000 confirmed cases,nationwide lockdown was imposed.Mid May the epidemic was stabilized and government eased measures.Here we model the dynamics of the epidemic in Spain over the whole span,and study the effectiveness of control measures.The model is also applied to Italy and Germany.We propose formulas to easily estimate the size of the outbreak and the benefit of early intervention.A susceptibleinfectious-recovered(SIR)model was used to simulate the epidemic.The growth and transmission rates,doubling time,and reproductive number were estimated by leastmean-square fitting of daily cases.Time-series data were obtained from official government reports.We forecasted the epidemic curve after lockdown under different effectiveness scenarios,and nowcasted the trend by moving average sliding window.Exponential growth expressions were derived.Outbreak progression remained under the early growth dynamics.The basic reproductive number in Spain was 2.5±0.1(95%CI 2.3 e2.7),and the doubling time was 2.8±0.1 days(95%CI 2.6e3.0).Slight variations in measures effectiveness produce a large divergence in the epidemic size.The effectiveness in Spain was 68%,above control threshold(60%).During lockdown the reproductive number dropped to an average of 0.81±0.02(95%CI 0.77e0.85).Estimated epidemic size is about 300,000 cases.A 7-days advance of measures yields a reduction to 38%.The dynamics in Spain is similar to other countries.Strong lockdown measures must be adopted if not compensated by rapid detection and isolation of patients,and even a slight relaxation would raise the reproductive number above 1.Simple calculations allow anticipating the size of the epidemic based on when measures are taken and their effectiveness.Spain acted late.Control measures must be implemented immediately in the face on an epidemic.展开更多
文摘<strong>Objective:</strong> We assess the application effect of the “3 + 1” mode in the COVID-19 epidemic prevention and control at the infection ward of a designated comprehensive hospital for COVID-19 treatment.<strong> Method: </strong>Based on the features of the inpatients of the infection ward and their relatives, a “3 + 1” mode for the COVID-19 prevention and control is developed to conform to the demands for epidemic prevention and control and the overall prevention and control scheme of the whole hospital. Here, “3” stands for the epidemic prevention and control system, personnel management, and prevention and control measures;“1” stands for COVID-19 testing.<strong> Result: </strong>From March 1, 2020 to March 31, 2021, a total of 3056 patients were hospitalized in the three infection wards. Among them, 265 patients had a fever, and 113 patients had respiratory symptoms. None of them were infected with COVID-19. The participation rate of the test about the knowledge related to COVID-19 and the knowledge mastery rate were both 100% among the medical staff. None of the inpatients and their companions or the medical staff was diagnosed with COVID-19.<strong> Conclusion: </strong>Thus the “3 + 1” mode proves successful for avoiding nosocomial infection and the spread of the epidemic.
基金funded by the 2021 Department of Higher Education of the Ministry of Education’s Teaching and Research Projects“Research on the Construction Guidelines,Standards and Norms of Online Open Courses and the Innovation of Teaching and Service Modes”(Grant No.2021)the 2020 Research and Practice Project on the Exploration and Application Promotion of Higher Education’s Teaching Mode Based on MOOC(Grant No.2020)+5 种基金the 2020 Shandong Undergraduate Teaching Reform Research and Cultivation Project“Research and Practice of Hybrid Teaching Mode under the Guidance of the Construction of MOOC Teaching Pilot Colleges”(Grant No.P2020007)2020 Shandong Provincial Undergraduate Teaching Reform Research Key Project“Research and Practice of Top-notch Innovative Talent Training Mode of Interdisciplinary and Professional Integration–Guided by the Construction of Future Technical Colleges”(Grant No.Z2020020)2020 Shandong Provincial Undergraduate Teaching Reform Research and Cultivation Project“Research and Practice of Innovation of New Engineering Agile Education Mode Towards Sustainable Competitiveness”(Grant No.P2020027)2020 Shandong Province Undergraduate Teaching Reform Major Sub Project“Research on the Construction of New Engineering Majors”(Grant No.T202011)2019 Harbin Institute of Technology(Weihai)“Curriculum Ideological and Political”Special Curriculum Construction Project(Grant No.2019)2021 Huawei’s“Smart Base”Project“Course Construction of Computer Composition Principles”(Grant No.IDEA104200302).
文摘During epidemic,students in medium-risk or high-risk areas are unable to return to school on time.In response to this new challenge,there is an urgent need to create a new teaching mode to offer on-line courses to those absent from the offline classes,and we propose a model integrating online and offline teaching.It is based on“dual-camera”method,which allows off-campus students to virtually build up a physical classroom scenario on campus through computers and mobile phones.Using this model,students can participate in class remotely.In order to enhance the engagement of off-campus online students,emphasis is placed on interactive teaching.Teachers are required to design their teaching in advance and to work in collaboration with multiple departments,then using information technology and suitable teaching methods to enable students to participate in physical classroom teaching.This model has been tested in practice and has been successful in meeting the challenges.Finally,4 areas for improvement and refinement are identified.
基金School Funded Project of COVID-19 of Chongqing Medical University,No.CQMUNCP0204Young Scientists Fund Program of the Education Commission of Chongqing,No.KJQN201900443+2 种基金National Key Research and Development Project of the Ministry of Science and Technology of the People's Republic of China,No.2017YFC0211705Young Scientists Fund Program of the National Natural Science Foundation of China,No.81502826and General Program of the China Postdoctoral Science Foundation,No.2014M562289.
文摘BACKGROUND Coronavirus disease 2019(COVID-19)is an emerging,rapidly evolving disease that spreads through the respiratory system and is highly contagious.In March 2020,the World Health Organization declared the COVID-19 outbreak a pandemic.In China,the pandemic was controlled after 2 mo through effective policies and containment measures.Describing the detailed policies and containment measures used to control the epidemic in Chongqing will provide a reference for the prevention and control of COVID-19 in other areas of the world.AIM To explore the effects of different policies and containment measures on the control of the COVID-19 epidemic in Chongqing.METHODS Epidemiological data on COVID-19 in Chongqing were prospectively collected from January 21 to March 15,2020.The policies and prevention measures implemented by the government during the epidemic period were also collected.Trend analysis was performed to explore the impact of the main policy measures on the effectiveness of the control of COVID-19 in Chongqing.As of March 15,the cumulative incidence of COVID-19 in Chongqing was 1.84/100000(576 cases)and the infection fatality rate was 1.04%(6/576).The spread of COVID-19 was controlled by effective policies that involved establishing a group for directing the COVID-19 epidemic control effort;strengthening guidance and supervision;ensuring the supply of daily necessities and medical supplies and equipment to residents;setting up designated hospitals;implementing legal measures;and enhancing health education.Medical techniques were implemented to improve the recovery rate and control the epidemic.Policies such as“the lockdown of Wuhan”,“initiating a first-level response to major public health emergencies”,and“implementing the closed management of residential communities”significantly curbed the spread of COVID-19.Optimizing the diagnosis process,shortening the diagnosis time,and constructing teams of clinical experts facilitated the provision of“one team of medical experts for each patient”treatment for severe patients,which significantly improved the recovery rate and reduced the infection fatality rate.CONCLUSION The prevention policies and containment measures implemented by the government and medical institutions are highly effective in controlling the spread of the epidemic and increasing the recovery rate of COVID-19 patients.
基金Sponsored by Social Science Foundation of Hebei Province (HB19YS039)。
文摘The outbreak of COVID-19 at the beginning of 2020 has a great impact on public health security at home and abroad.Community is the basic unit of urban epidemic prevention,and improving community resilience is of great significance for reducing the spread of the epidemic and maintaining the normal life of residents during the epidemic.Based on the concept of resilience,10 indicators were selected from four dimensions of urban space,including facilities,space,nature and society,to construct a community resilience evaluation indicator system for epidemic prevention,and 56 housing estates in Congtai District,Handan City,were selected for scientific evaluation.The results showed that the overall resilience of this region was relatively low and the resilience index decreased from southwest to northeast with the degree of urban development.The accessibility of urban open space,the proportion of redundant space area and the area of public space per capita had the lowest resilience index.Finally,policy suggestions were put forward to improve the resilience of housing estates in the region,so as to promote the steady progress of the city towards the agenda for sustainable development.
基金National Natural Science Foundation of China,No.31870971Zhejiang Medical and Health Science and Technology Plan,No.2023KY155.
文摘BACKGROUND During the coronavirus disease 2019(COVID-19)pandemic,traditional teaching methods were disrupted and online teaching became a new topic in education reform and informatization.In this context,it is important to investigate the necessity and effectiveness of online teaching methods for medical students.This study explored stomatology education in China to evaluate the development and challenges facing the field using massive open online courses(MOOCs)for oral medicine education during the pandemic.AIM To investigate the current situation and challenges facing stomatology education in China,and to assess the necessity and effectiveness of online teaching methods among medical students.METHODS Online courses were developed and offered on personal computers and mobile terminals.Behavioral analysis and formative assessments were conducted to evaluate the learning status of students.RESULTS The results showed that most learners had already completed MOOCs and achieved better results.Course behavior analysis and student surveys indicated that students enjoyed the learning experience.However,the development of oral MOOCs during the COVID-19 pandemic faced significant challenges.CONCLUSION This study provides insights into the potential of using MOOCs to support online professional learning and future teaching innovation,but emphasizes the need for careful design and positive feedback to ensure their success.
基金This work was partly supported by the National Natural Science Foundation of China,China(NSFC 71831003).
文摘As a fundamental logistics service,the express delivery(ED)industry provides production and consumption activities to maintain efficient supply chain operations.It plays an important role in promoting industrial development and maintaining daily life and consumption.This study examined the effects of COVID-19 on the ED industry using ED package delivery data from 31 provinces(autonomous regions and municipalities)in China.Using a difference-in-differences method,the COVID-19 outbreak was found to have a positive effect and epidemic prevention and control(EPC)policies were found to have negative effects on the development of the ED industry.In addition to EPC policies,the Chinese government has implemented other short-term economic interventions(SEI),such as the resumption of work and production(RWP),policies to balance economic growth,and epidemic prevention.This study divided the pandemic period into three stages to analyze the different impacts of EPC and SEI policy changes on the ED industry.The RWP policies adopted during the pandemic positively impacted the volume and income of packages delivered to the ED industry.The conclusions of this study are significant for the ED industry in addressing public health emergencies and for the Chinese government to formulate EPC and SEI policies during epidemic periods.
基金This research was funded by Soft Science Special Project of Hebei Innovation Capability Enhancement Program[Grant Number 21557635D]Top Young Talents Scientific Research Project of Higher Education in Hebei Province[grant number BJ2021084]+2 种基金Baoding Philosophy and Social Science Planning Project[grant number 2020047]Scientific Research Foundation for the Talents of Hebei Agricultural University[grant number YJ2020017]Teaching and Research Project of Hebei Agricultural University[grant number 2021C-39].
文摘Information fusion is very effective and necessary to respond to a public epidemic outbreak such as COVID-19.Big data intelligent,as a product of information fusion,plays an important role in the prevention and control of COVID-19.The continuous mechanism of big data intelligent innovation(BDII)is fundamental to effectively prevent and control a public epidemic outbreak.In this study,the continuous mechanism of BDII was fused into a complex network,and a three-dimensional collaborative epidemic prevention model was constructed.Furthermore,adiabatic elimination principle was applied to explore the order parameter of the continuous mechanism.Finally,empirical analysis was conducted based on three-stage epidemic prevention strategies to reveal the effect of continuous epidemic prevention under different big data intelligent emergency management policy levels.The results of this study are as follows.Through the mutual influence and coupling of the subsystems,the continuous mechanism of BDII can be realized to manage a public epidemic outbreak emergency.The big data intelligent subsystem is integrated into the subsystems of public epidemic outbreak management and science and technology innovation.The big data intelligent emergency management policies play a positive role in the overall BDII for the continuous epidemic prevention of a public epidemic outbreak.The convention of BDII transformation is the continuous mechanism of BDII as the order parameter of a public epidemic outbreak.In the early stage of epidemic prevention,the convention is excessively pursued,while the neglect of BDII configuration is not conducive to the long-term collaborative governance of a public epidemic outbreak.The study provides practical guidelines for the formulation of fusion innovation policies,application of big data intelligent,and theoretical basis for the emergency management of a public epidemic outbreak in the medical field.
文摘In a context of a virus that is transmissive by sputtering,wearing masks appear necessary to protect the wearer and to limit the propagation of the disease.Currently,we are facing the 2019-2020 coronavirus pandemic.Coronavirus disease 2019(COVID-19)is an infectious disease with first symptoms similar to the flu.The symptom of COVID-19 was reported first in China and very quickly spreads to the rest of the world.The COVID-19 contagiousness is known to be high by comparison with the flu.In this paper,we propose a design of a mobile application for permitting everyone having a smartphone and being able to take a picture to verify that his/her protection mask is correctly positioned on his/her face.Such application can be particularly useful for people using face protection mask for the first time and notably for children and old people.The designed method exploits Haar-like feature descriptors to detect key features of the face and a decision-making algorithm is applied.Experimental results show the potential of this method in the validation of the correct mask wearing.To the best of our knowledge,our work is the only one that currently proposes a mobile application design“CheckYourMask”for validating the correct wearing of protection mask.
文摘The coronavirus disease 2019 was first reported in Wuhan in December 2019 and then spread rapidly throughout the world.On March 11,2020,the World Health Organization declared coronavirus disease 2019 a pandemic.In response to the pandemic,the management division of West China Hospital oversaw the implementation of hospital-wide emergency measures.In accordance with these measures,the hospital's thoracic surgery ward implemented a new management system by reformulating staff training plans,patient admission procedures,and other systems for managing the ward and protecting perioperative patients.Overall,the ward was successful in restoring normal working order,protecting all staff from occupational exposures,and ensuring the safety of inpatients and their families.
基金supported by the China Association for Science and Technology(Project Number:2021ZZGJB070734)National Key Research and Development Program of China(Project Number:2018YFF0300604)National Key Research and Development Program of China(Project Number:2019YFF0301703).
文摘Under the condition of normalized epidemic,how athletes train and compete well has been in the spotlight.This article reported the symptom,hospitalization and training situation of seven confirmed cases of coronavirusdisease-2019(COVID-19)among Chinese national teams.Moreover,the paper summarized the experience of Chinese national teams in terms of epidemic prevention and control,treatment of infection,and safe return to play.Through a scientific combination of medication and non-medical treatment,seven athletes were all discharged from the hospital.These discharged athletes underwent strict isolation and scientific training before returning to sports teams.Before returning to play,continuous monitoring of physical and mental condition was required.All seven athletes returned to play safely and performed excellently.As for hosting large-scale sporting events,the entire enclosed-loop management from immigration to competition was proposed in this paper.This study could serve as a standard of epidemic prevention and control,treatment for infection and safe return to play during competition and training around the world.
文摘Spain is among the countries worst hit by the Covid-19 pandemic,with one of the highest rate of infections and deaths per million inhabitants.First positive was reported on late January 2020.Mid March,with 7,000 confirmed cases,nationwide lockdown was imposed.Mid May the epidemic was stabilized and government eased measures.Here we model the dynamics of the epidemic in Spain over the whole span,and study the effectiveness of control measures.The model is also applied to Italy and Germany.We propose formulas to easily estimate the size of the outbreak and the benefit of early intervention.A susceptibleinfectious-recovered(SIR)model was used to simulate the epidemic.The growth and transmission rates,doubling time,and reproductive number were estimated by leastmean-square fitting of daily cases.Time-series data were obtained from official government reports.We forecasted the epidemic curve after lockdown under different effectiveness scenarios,and nowcasted the trend by moving average sliding window.Exponential growth expressions were derived.Outbreak progression remained under the early growth dynamics.The basic reproductive number in Spain was 2.5±0.1(95%CI 2.3 e2.7),and the doubling time was 2.8±0.1 days(95%CI 2.6e3.0).Slight variations in measures effectiveness produce a large divergence in the epidemic size.The effectiveness in Spain was 68%,above control threshold(60%).During lockdown the reproductive number dropped to an average of 0.81±0.02(95%CI 0.77e0.85).Estimated epidemic size is about 300,000 cases.A 7-days advance of measures yields a reduction to 38%.The dynamics in Spain is similar to other countries.Strong lockdown measures must be adopted if not compensated by rapid detection and isolation of patients,and even a slight relaxation would raise the reproductive number above 1.Simple calculations allow anticipating the size of the epidemic based on when measures are taken and their effectiveness.Spain acted late.Control measures must be implemented immediately in the face on an epidemic.