Your browser doesn't support javascript.
Show: 20 | 50 | 100
Results 1 - 20 de 86
Filter
1.
Chinese Journal of Practical Nursing ; 39(7):491-497, 2023.
Article in Chinese | Scopus | ID: covidwho-20245402

ABSTRACT

Objective To explore the efforts of applying mindfulness stress reduction therapy in alleviating stress reactions and burnout among head nurses in the context of the Coronavirus disease 2019 (COVID-19). Methods This was a quasi experimental study. In June 2021, 109 head nurses with mild or above burnout measured by Maslach Burnout Inventory (MBI) from 12 hospitals in Zhangjiagang City were selected as the research objects to implement mindfulness-based stress reduction therapy for 8 weeks, and the scores of the Five Facet Mindfulness Question-naire (FFMQ), Stress Response Questionnaire (SRQ) and MBI of the head nurses were compared before and after the intervention. Results The five dimensions of observation, description, perceived action, non-judgment, and non-response and the total scores of the FFMQ were (26.28 ± 1.32), (26.94 ± 1.29), (25.49 ± 0.99), (25.45 ± 1.05), (23.48 ± 1.01), and (127.63 ± 3.78) of the post-intervention, which were higher than the pre-intervention scores of (25.04 ± 1.37), (25.04 ± 1.37), (25.37 ± 1.18), (24.15 ± 1.00), (24.09 ± 0.98), (22.26 ± 1.04), and (120.90 ± 4.06), with statistically significant differences (t values were -39.21- -15.36, all P<0.01). The three dimensions of emotional, somatic, and behavioral responses and total scores of the post-intervention SRQ were (27.70 ± 6.12), (20.75 ± 4.20), (15.19 ± 3.11), and (65.99 ± 12.43), respectively, lower than the pre-intervention scores of (29.19 ± 6.91), (21.86 ± 5.20), (16.48 ± 4.16), and (70.12 ± 15.97), with statistically significant differences (t values were 5.70-9.33, all P<0.01);the scores of dimensions of emotional exhaustion and depersonalization in post-intervention MBI were (26.24 ± 4.60) and (5.96 ± 1.25), lower than the pre-intervention scores of (29.66 ± 6.02) and (6.90 ± 1.59). The post-intervention scores of personal fulfillment (32.37 ± 5.02), higher than the pre-intervention scores of (28.60 ± 6.04), all with statistically significant differences (t=15.36, 13.50, - 9.65, all P<0.01). Conclusions The implementation of mindfulness stress reduction therapy for the head nurses can relieve their work pressure due to the prevention and control of the COVID-19 epidemic, reshape their healthy psychology, and reduce job burnout. © The Author(s) 2023.

2.
National Science Review ; 2023.
Article in English | Web of Science | ID: covidwho-2328396

ABSTRACT

The Natural Science Foundation of China (NSFC) held the 326th Shuangqing Forum on 22 February 2023. As the first forum of 2023 and one of the first in-person activities post-COVID, a topic of national and global significance was chosen: the challenges, for basic sciences, of reaching carbon neutrality in construction and architecture. National Science Review (NSR) attended this forum, as several presentations related to materials science and information science would appeal to the broad audience of NSR. In the plenary session, four members of the Chinese Academy of Engineering (CAE), Profs. Jiaping Liu, Jianguo Wang, Weimin Zhuang and Hongyuan Mei, provided an overview of the challenges facing construction and architecture industries in the run-up to carbon neutrality.

3.
National Science Review ; 2022.
Article in English | Web of Science | ID: covidwho-2328395

ABSTRACT

The Science Popularization and Education Committee of the Academic Divisions of the Chinese Academy of Sciences (CASAD) invited the CAS Institutes of Science and Development (CASISD) and National Science Review (NSR) to organize a roundtable discussion of viral infectious diseases on 11 October 2022. During this extensive discussion, experts introduced the history and background of virus and viral infectious diseases. They explained the function of human's immune system. In addition, they answered frequently asked questions by the public such as the efficacy and safety of COVID vaccines, the cost of disease treatment and the threat of latest monkey pox outbreak.

4.
COVID-19 and a World of Ad Hoc Geographies: Volume 1 ; 1:2179-2190, 2022.
Article in English | Scopus | ID: covidwho-2327436

ABSTRACT

Information and communication technologies (ICTs) have been making higher education confront great challenges globally, while COVID-19 has been speeding up the necessity to overcome them. Traditionally, geographical teaching in China involves indoor experiments, fieldtrips and other practical activities in addition to lectures in class. We asked what impacts or changes the COVID-19 epidemic would have on geographical education in universities of China. Based on the case of Beijing Normal University, this chapter aims to examine new learning patterns as a response to the outbreak and the real impacts in China. Questionnaire surveys and typical cases are used to examine the teaching arrangements and effects in three periods, viz., the early stage of the outbreak when it was necessary to prepare contingent teaching plans, the middle and late stage of the spring semester to examine the adaptations and feedback of online learning, and later when traditional teaching resumed in the autumn semester of 2020 to evaluate online learning. This research aims to seek some innovative measurements for reforming geographical education in Chinese universities in post COVID-19 pandemic times. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2022.

5.
Journal of Environmental and Occupational Medicine ; 38(9):1029-1032, 2021.
Article in Chinese | EMBASE | ID: covidwho-2323702

ABSTRACT

The removal and defense mechanisms of the respiratory system of patients with pneumoconiosis are impaired. Once patients with pneumoconiosis and other underlying lung diseases are infected with novel coronavirus, they are likely to progress to severe cases with COVID-19, a tough condition with a high mortality and poor prognosis. Herein we presented a case of pneumoconiosis and tuberculosis complicated with severe COVID-19. Active administration of anti-viral, anti-infection, phlegm-removing, anti-asthmatic, and high-flow oxygen therapies did not alleviate the patient's acute respiratory distress syndrome symptoms. Then tracheal intubation, ventilator assisted breathing, and lung protective ventilation were given but did not effectively treat the patient's respiratory failure. Finally, the patient died clinically despite use of extracorporeal membrane oxygenation (ECMO).Copyright © 2021, Shanghai Municipal Center for Disease Control and Prevention. All rights reserved.

6.
British Food Journal ; 2023.
Article in English | Web of Science | ID: covidwho-2327155

ABSTRACT

PurposeThis paper aims to examine how emotions affect consumers' food choices and food preparation activities during stressful periods, using the context of the coronavirus disease 2019 (COVID-19) outbreak in China.Design/methodology/approachThis study used an online survey, with a sample of 1,050 individuals from 32 regions in China. Multi-regression and mediation models were used to test the relationships among perceived knowledge, emotions and food behaviors.FindingsThe results show that positive emotions positively affect healthy food consumption and engagement in food preparations. In contrast, negative emotions contribute to an increase in indulgent food consumption and quick-and-easy meal preparations. Increased knowledge of the current situation can enhance positive emotions and thus promote healthy food behaviors. Lacking knowledge may result in unhealthy food behaviors through negative emotions.Originality/valueThis study contributes to the understanding of emotions and food behaviors by examining the effects of both negative and positive emotions in the general population, exploring a wider constellation of food behaviors and identifying perceived knowledge as an important antecedent to emotions' effects on food behaviors. Implications for consumers and public policy are offered.

7.
Medical Journal of Peking Union Medical College Hospital ; 12(1):13-17, 2021.
Article in Chinese | EMBASE | ID: covidwho-2320326

ABSTRACT

The pandemic of coronavirus disease 2019 (COVID-19) has spread worldwide and the mortality is high in severe COVID-19 patients. Clinical studies suggested that obesity is an independent risk factor for severe and dead cases of COVID-19. For COVID-19 patients with obesity, early evaluation of obesity-related comorbidities and aggressive treatments, including diet control, airway management, anticoagulant thromboprophylaxis, and management of comorbidities, are encouraged to improve their prognosis.Copyright © 2021, Peking Union Medical College Hospital. All rights reserved.

8.
Medical Journal of Peking Union Medical College Hospital ; 12(1):136-140, 2021.
Article in Chinese | EMBASE | ID: covidwho-2319257

ABSTRACT

Objective To investigate the impact of the outbreak of coronavirus disease 2019 (COVID-19) as an intervention factor on residency training at different stages, and look into the enhancement effect of post-graduation medical training program based on competency of residency training, so as to provide reference for the optimization of medical education at the postgraduate stage. Methods After the initial success of COVID-19 prevention and control, 169 clinical postdoctoral trainess(clinical postdocs) and 515 graduate students specializing in clinical medicine(professional postdocs) were surveyed by an anonymous online questionnaire. To analyze the differences of cognition and self- evaluation of core competence between the two groups. Results There were 141 valid questionnaires collected from clinical postdocs (83.43%, 141/169) and 264 valid questionnaires collected from professional postdocs (51.26%, 264/515). In both groups, more than 85% of the students agreed or strongly agreed that they had a deeper understanding of the profession of doctors during the epidemic. The results of competency self-evaluation showed that, except for the items of "self-improvement", the self-evaluation scores of clinical postdoctoral students on other items were significantly higher than those of professional postdoctoral students (all P <0.05). Conclusions COVID-19, as a factor of emergency intervention, can improve the competency cognition of residents. The core-competency based post-graduation medical education model can comprehensively improve the students' comprehensive ability, which is an effective training program for residents. It is suggested that the vocational planning education for residents should be paid attention to in the stage of college education, and a new mode of college education that is closely combined with the post-graduation education should be further explored.Copyright © 2021 Thomson Reuters and Contributors.

9.
Journal of Xi'an Jiaotong University (Medical Sciences) ; 44(2):177-184, 2023.
Article in Chinese | EMBASE | ID: covidwho-2315432

ABSTRACT

Objective To explore the effects of perceived risk of COVID-19 of college students on their anxiety and depression, as well as the roles of attention to negative information and perceived social support, so as to provide theoretical basis for colleges and universities to formulate corresponding intervention measures. Methods By the convenience sampling method, totally 1 404 college students from Shaanxi and Henan provinces were investigated online by using General Information Questionnaire, Perceived Risk of COVID-19 Pandemic Scale, Attention to Negative Information Scale, Patient Health Questionnaire, Generalized Anxiety Disorder and Perceived Social Support Scale. SPSS 20. 0 was used for data analysis, Pearson correlation method was used to explore the correlation between variables. The mediating effect of attention to negative information and the moderating effect of perceived social support were analyzed by PROCESS. Results The scores of anxiety and depression of the 1 404 college students included in the study were 4.03 +/- 4.48 and 6.21 +/- 5.41, respectively. The detection rate of anxiety symptom was 29.9%, and that of depression symptom was 44.4%. The risk perception of COVID-19 epidemic of the college students was positively correlated with attention to negative information (r = 0.373, P<0.001), anxiety (r = 0.227, P<0.001), and depression (r = 0.226, P<0.001). Anxiety (r = 0.553, P<0.001) and depression 0 = 0.497, P<0.001) were positively correlated with attention to negative information, while perceived social support was negatively correlated with the risk perception of the COVID-19 (r = - 0.154, P<0.001), attention to negative information (r= - 0.259, P<0.001), anxiety (r = - 0.321, P<0.001) and depression (r=- 0.278, P<0.001). The risk perception of COVID-19 affected the anxiety and depression of the students mainly through the mediating effect of attention to negative information. The total effect of risk perception of COVID-19 and anxiety was 0. 227, and the mediating effect accounted for 80. 18% of the total effect. The total effect of risk perception of COVID-19 and depression was 0. 228, and the mediating effect accounted for 90. 35% of the total effect. Perceived social support played a moderating role in the last half of this mediating model. Conclusion Risk perception of COVID-19 indirectly affects the occurrence of anxiety and depression in college students through attention to negative information, and perceived social support plays a moderating role in this mediating model. The findings suggest that when a risk event occurs, colleges and universities should pay attention to guiding students to adjust their attentional bias to external information, and give students enough care and support to improve their mental health.Copyright © 2023 Xi'an Medical University. All rights reserved.

10.
Medical Journal of Peking Union Medical College Hospital ; 12(1):54-58, 2021.
Article in Chinese | EMBASE | ID: covidwho-2314223

ABSTRACT

Objective The objective of this study was to investigate the basic needs of medical staff during the coronavirus disease 2019 pandemic in a fever clinic, so as to provide a reference for the global epidemic medical teams. Methods A semi-structured qualitative interview outline was designed, including: (1) work level: Working hours, working intensity, and safety guarantee in a fever clinic;(2)life level: Diet, sleep, and physical comfort;(3)psychological level: Emotion, pressure, coping style, and interpersonal resources. The basic needs of the first batch of the fever clinic in Peking Union Medical College Hospital was studied by open telephone interviews. Results A total of 37 medical staff were interviewed, including 8 males (21.6%) and 29 females (78.4%). Among them, there were 16 doctors (43.2%), 19 nurses (51.4%), and 2 medical technicians (5.4%). In terms of work settings, the ideal continuous working time was 4-6 hours per shift. There should be pro re nata positions during extremely high workload, and sufficient personal protective equipment was the key to safety. In terms of living conditions, providing meals according to different shifts was important for dietary needs, and sleeping pills were temporarily needed for sleep. In terms of psychological reactions, nervousness and worrying were relatively common. Family and colleagues were important resources of support. Sport could help relieve physical and psychological stress, and psychological support from psychologists was helpful in reducing their negative emotions. Conclusions The basic needs of medical staff should be respected so as to keep the efficacy of their work. We suggest that medical staff can rest after each 4-6 h working shift. Personal protective equipment should be sufficient. Psychological support should be noted in all of them and provided when necessary.Copyright © 2021, Peking Union Medical College Hospital. All rights reserved.

11.
Chinese Science Bulletin-Chinese ; 67(16):1783-1795, 2022.
Article in English | Web of Science | ID: covidwho-2307753

ABSTRACT

In response to the construction process of Healthy China. it is rather important to create a safe, healthy and energy-efficient indoor environment for public buildings. The public building space is often densely populated, with a large flow of people and many types of air pollution, which presents non-uniform dynamic distribution characteristics. This brings great challenges to the control of indoor air safety, especially during the pandemic period of COVID-19. Excessive ventilation may not only cause large energy waste. but also lead to cross-contamination and even a cluster of infection. In this paper, an operation and maintenance (O&M) control system for indoor air safety is developed based on the core concepts and basic methods of human ergonomics. In this system, one of the important human environmental variables is focused for control, i.e.. indoor air pollution level. Especially after the outbreak of COVID-19. droplets and droplet nuclei from respiration are the most significant air pollution categories required for mitigation. Towards the efficient control of air pollution in large public buildings. it should further take into account the interaction of human, equipment and machines (i.e., ventilation_ air purification and disinfection and intelligent control system) and building environment. Firstly, on the basis of the online monitoring of indoor air pollution concentration and personnel flow, the non-uniform dynamic distribution of indoor pollutants and personnel can be obtained by using the non-uniform and low-dimensional rapid prediction models and computer vision processing. Then, the optimal setting results of ventilation parameters (e.g., ventilation modes, supply air rate. etc.) can be outputted by the environmental control decision system. Finally, based on a combination of monitoring sensors, controllers and actuator hardware equipment (at the location of fans or dampers), the intelligent regulation and control of ventilation system can be realized, aimed at minimizing energy consumption and reducing pollutant concentration and exposure level. Meanwhile, the air purification and disinfection system (especially for the disinfection of virus particles) are operated under the condition of the ventilated environment, which can serve as a powerful auxiliary to the maintenance of indoor air safety. The workflow and effect of the O&M control system are demonstrated by an engineering application case of the front hall in the International Convention and Exhibition Center. The results indicate that the non-uniform and low-dimensional rapid prediction model for pollutant concentration is effective for the ventilation control with the average prediction difference of 11.9%. The implementation of the intelligent ventilation system can reduce the risk of human infection to less than 4%. and its energy-saving ratio for the ventilation can be as high as about 45%. Through optimizing the layout strategies of disinfection devices based on the intelligent ventilation control, the space accessibility of negative oxygen ions can be well accepted, to further increase the removal efficiency of air pollution. The calculated value of space disinfection rate is more than 99%, which can further reduce the risk of infection by 1-2 orders of magnitude. This study can provide an important reference for the promotion and upgrading of O&M control system for indoor air safety.

12.
Discrete and Continuous Dynamical Systems - Series S ; 16(3-4):602-626, 2023.
Article in English | Scopus | ID: covidwho-2304563

ABSTRACT

Facing the more contagious COVID-19 variant, Omicron, nonpharmaceutical interventions (NPIs) were still in place and booster doses were proposed to mitigate the epidemic. However, the uncertainty and stochasticity in individuals' behaviours toward the NPIs and booster dose increase, and how this randomness affects the transmission remains poorly understood. We present a model framework to incorporate demographic stochasticity and two kinds of environmental stochasticity (notably variations in adherence to NPIs and booster dose acceptance) to analyze the effects of different forms of stochasticity on transmission. The model is calibrated using the data from December 31, 2021, to March 8, 2022, on daily reported cases and hospitalizations, cumulative cases, deaths and vaccinations for booster doses in Toronto, Canada. An approximate Bayesian computational (ABC) method is used for calibration. We observe that demographic stochasticity could dramatically worsen the outbreak with more incidence compared with the results of the corresponding deterministic model. We found that large variations in adherence to NPIs increase infections. The randomness in booster dose acceptance will not affect the number of reported cases significantly and it is acceptable in the mitigation of COVID-19. The stochasticity in adherence to NPIs needs more attention compared to booster dose hesitancy. © 2023 American Institute of Mathematical Sciences. All rights reserved.

13.
Cailiao Daobao/Materials Reports ; 37(6), 2023.
Article in Chinese | Scopus | ID: covidwho-2298743

ABSTRACT

R apid, sensitive and specific detection of viruses is a key issue in the medical field. Since 2020, the global outbreak of COVID-19 requires more sensitive virus detection methods. With the development of new materials, especially nanomaterials, many materials have demonstrated great physical, chemical and mechanical properties, which present potential for virus detection. Nanomaterials can be divided into zero-dimensional materials, one-dimensional materials and two-dimensional materials by structure. In this paper, the classification and the latest progress of nanomaterials are reviewed, highlighting their applications in the field of virus detection. The future prospect of nanomaterials in virus detection is also presented and discussed. © 2023 Cailiao Daobaoshe/ Materials Review. All rights reserved.

14.
Journal of Xi'an Jiaotong University (Medical Sciences) ; 44(2):177-184, 2023.
Article in Chinese | Scopus | ID: covidwho-2296619

ABSTRACT

Objective To explore the effects of perceived risk of COVID-19 of college students on their anxiety and depression, as well as the roles of attention to negative information and perceived social support, so as to provide theoretical basis for colleges and universities to formulate corresponding intervention measures. Methods By the convenience sampling method, totally 1 404 college students from Shaanxi and Henan provinces were investigated online by using General Information Questionnaire, Perceived Risk of COVID-19 Pandemic Scale, Attention to Negative Information Scale, Patient Health Questionnaire, Generalized Anxiety Disorder and Perceived Social Support Scale. SPSS 20. 0 was used for data analysis, Pearson correlation method was used to explore the correlation between variables. The mediating effect of attention to negative information and the moderating effect of perceived social support were analyzed by PROCESS. Results The scores of anxiety and depression of the 1 404 college students included in the study were 4.03 ± 4.48 and 6.21 ± 5.41, respectively. The detection rate of anxiety symptom was 29.9%, and that of depression symptom was 44.4%. The risk perception of COVID-19 epidemic of the college students was positively correlated with attention to negative information (r = 0.373, P<0.001), anxiety (r = 0.227, P<0.001), and depression (r = 0.226, P<0.001). Anxiety (r = 0.553, P<0.001) and depression 0 = 0.497, P<0.001) were positively correlated with attention to negative information, while perceived social support was negatively correlated with the risk perception of the COVID-19 (r = - 0.154, P<0.001), attention to negative information (r= - 0.259, P<0.001), anxiety (r = - 0.321, P<0.001) and depression (r=- 0.278, P<0.001). The risk perception of COVID-19 affected the anxiety and depression of the students mainly through the mediating effect of attention to negative information. The total effect of risk perception of COVID-19 and anxiety was 0. 227, and the mediating effect accounted for 80. 18% of the total effect. The total effect of risk perception of COVID-19 and depression was 0. 228, and the mediating effect accounted for 90. 35% of the total effect. Perceived social support played a moderating role in the last half of this mediating model. Conclusion Risk perception of COVID-19 indirectly affects the occurrence of anxiety and depression in college students through attention to negative information, and perceived social support plays a moderating role in this mediating model. The findings suggest that when a risk event occurs, colleges and universities should pay attention to guiding students to adjust their attentional bias to external information, and give students enough care and support to improve their mental health. © 2023 Xi'an Medical University. All rights reserved.

15.
Chinese Medical Ethics ; 36(1):49-56, 2023.
Article in Chinese | Scopus | ID: covidwho-2263555

ABSTRACT

Objective: To understand the current situation of nurses' professional quality of life in China and its correlation with benefit findings, so as to provide reference for formulating targeted measures to improve nurses' professional quality of life in China. Methods: Questionnaire star was used to conduct a cross-sectional survey of 11 924 registered nurses in China from January 2022 to April 2022 using the General Information Questionnaire, the Professional Quality of Life Scale (ProQOL) and the General Benefit Discovery Scale (GBFS). SPSS 22.0 software was used for data analysis. Results: The scores of various dimensions of nurses' ProQOL scale were: Compassion satisfaction was (32.71±6.81) points, burnout was (27.38±5.20) points, secondary traumatic stress was (28.44±6.67) points, and the total score of GBFS was (100.90±18.04) points. The results of multiple linear stepwise regression showed that the main influencing factors of compassion satisfaction were marital status, position, work unit level and educational background (P <0.05). The main influencing factors of burnout were position, professional title, work unit level and whether there were children to be taken care of at home (P <0.05). The main influencing factors of secondary traumatic stress were education background, marital status, professional title, whether there was an old person to be taken care of at home, whether to take care of COVID-19 patients, whether to be an epidemic support staff and position (P <0.05). Benefit finding independently predicted the three dimensions of nurses' professional quality of life (P <0.001). Conclusions: Chinese nurses' professional quality of life was at a moderate level and it was significantly affected by benefit finding. Attention should be paid to factors such as marital status, work unit level, position, professional title, education background, whether there was an old person to be taken care of at home, whether to take care of COVID-19 patients, so as to improve the level of nurses' benefit finding, promote their personal growth, provide good job guarantee, and improve Chinese nurses' professional quality of life. © 2023, Editorial department of Chinese Medical Ethics. All rights reserved.

16.
Journal of Simulation ; 2023.
Article in English | Scopus | ID: covidwho-2289016

ABSTRACT

In this study, we present a hybrid agent-based model (ABM) and discrete event simulation (DES) framework where ABM captures the spread dynamics of COVID-19 via asymptomatic passengers and DES captures the impacts of environmental variables, such as service process capacity, on the results of different containment measures in a typical high-speed train station in China. The containment and control measures simulated include as-is (nothing changed) passenger flow control, enforcing social distancing, adherence level in face mask-wearing, and adding capacity to current service stations. These measures are evaluated individually and then jointly under a different initial number of asymptomatic passengers. The results show how some measures can consolidate the outcomes for each other, while combinations of certain measures could compromise the outcomes for one or the other due to unbalanced service process configurations. The hybrid ABM and DES models offer a useful multi-function simulation tool to help inform decision/policy makers of intervention designs and implementations for addressing issues like public health emergencies and emergency evacuations. Challenges still exist for the hybrid model due to the limited availability of simulation platforms, extensive consumption of computing resources, and difficulties in validation and optimisation. © 2023 The Operational Research Society.

17.
Dili Yanjiu ; 41(6):1684-1699, 2022.
Article in Chinese | Scopus | ID: covidwho-2288114

ABSTRACT

In the context of COVID-19 pandemic, schools from China and even in the world have carried out online teaching. Currently, online teaching has turned"future”into"reality” and created phenomenon of"taking home as school”. The existing geographical literature has paid little attention to the practices of home schooling and construction of learning space at home in the special context of the pandemic. Borrowing the concept of alternative education space from geography of education, and employing questionnaire survey and semi-structured depth interview as research methods, this paper aims to examine college students' practices and processes of place-making of home schooling during the pandemic. The tension and strategies of spatial negotiation during home schooling are unfolded. Furthermore, this paper explores students' perception of home and school after experiencing home schooling. The findings include: (1) Home schooling during the pandemic is a complex process of integration between educational space and home space, which produces rich social implication that enriches the spatial meaning of educating and learning at home. (2) Construction of space of home schooling involves reconciliation between study and livelihood-making, as well as study and ordinary family activities. Among them the area and quality of learning space are closely related to economic and social conditions of family and community. Once learning practice is embedded in family daily life and space, the boundary between learning space and family space becomes blurred, which brings disturbance to home learning. (3) Students have the initiative and autonomy to construct learning space at home, and flexibly use space, time and identity strategies to interpret the spatio-temporal relationship between home space and learning space and to coordinate the identity expression of "family” and "student”. Through learning practices, home space is endowed with new educational meanings. The findings of this study enrich the current research on home space in the context of COVID-19 pandemic, echo geographers' raising concern on the construction of multiple educational space, and has great significance for understanding the relationship between education, learning practice and everyday space, as well as reflecting and supporting the needs of home schooling of different groups. © 2022, Science Press. All rights reserved.

18.
CMES - Computer Modeling in Engineering and Sciences ; 136(3):2595-2616, 2023.
Article in English | Scopus | ID: covidwho-2286023

ABSTRACT

This paper presents a 6-layer customized convolutional neural network model (6L-CNN) to rapidly screen out patients with COVID-19 infection in chest CT images. This model can effectively detect whether the target CT image contains images of pneumonia lesions. In this method, 6L-CNN was trained as a binary classifier using the dataset containing CT images of the lung with and without pneumonia as a sample. The results show that the model improves the accuracy of screening out COVID-19 patients. Compared to other methods, the performance is better. In addition, the method can be extended to other similar clinical conditions. © 2023 Tech Science Press. All rights reserved.

19.
SIAM Journal on Applied Mathematics ; 83(1):276-301, 2023.
Article in English | Scopus | ID: covidwho-2258664

ABSTRACT

The ongoing coronavirus disease 2019 (COVID-19) pandemic poses a huge threat to global public health. Motivated by China's experience of using Fangcang shelter hospitals (FSHs) to successfully combat the epidemic in its initial stages, we present a two-stage delay model considering the average waiting time of patients' admission to study the impact of hospital beds and centralized quarantine on mitigating and controlling of the outbreak. We compute the basic reproduction number in terms of the hospital resources and perform a sensitivity analysis of the average waiting times of patients before admission to the hospitals. We conclude that, while designated hospitals save lives in severely infected individuals, the FSHs played a key role in mitigating and eventually curbing the epidemic. We also quantified some key epidemiological indicators, such as the final size of infections and deaths, the peak height and its timing, and the maximum occupation of beds in FSHs. Our study suggests that, for a jurisdiction (region or country) still struggling with COVID-19, when possible, it is essential to increase testing capacity and use a centralized quarantine to massively reduce the severity and magnitude of the epidemic that follows. © 2023 Society for Industrial and Applied Mathematics.

20.
Chinese Journal of Clinical Infectious Diseases ; 14(2):97-101, 2021.
Article in Chinese | EMBASE | ID: covidwho-2261426

ABSTRACT

COVID-19 has swept across the world, causing widespread epidemics and millions of life lost worldwide. After infected with 2019-nCoV, the body quickly mobilizes the innate immune response and produces type interferon (IFN-). IFN- plays an important role in virus clearance in the early stage of disease. This article reviews the innate immune recognition after virus infection and the interaction between 2019-nCoV and IFN-, which would be conductive to understanding the pathogenesis and antiviral treatment of COVID-19.Copyright © 2021 Chinese Medical Association

SELECTION OF CITATIONS
SEARCH DETAIL