Your browser doesn't support javascript.
Show: 20 | 50 | 100
Results 1 - 20 de 21
Filter
1.
37th International Conference on Computers and Their Applications, CATA 2022 ; 82:112-121, 2022.
Article in English | Scopus | ID: covidwho-1790243

ABSTRACT

Currently, many short texts are published online, especially on social media platforms. High impact events, for example, are highly commented on by users. Understanding the subjects and patterns hidden in online discussions is a very important task for contexts such as elections, natural disasters or major sporting events. However, many works of this nature use techniques that, despite showing satisfactory results, are not the most suitable when it comes to the short texts on social media and may suffer a loss in their results. Therefore, this paper presents a text mining method for messages published on social media, with a data pre-processing step and topic modeling for short texts. For this paper, we created a data set from real world tweets related to COVID-19 that is openly available1 for research purposes. © 2022, EasyChair. All rights reserved.

2.
Humanidades & Inovacao ; 8(63):152-169, 2021.
Article in Portuguese | Web of Science | ID: covidwho-1766579

ABSTRACT

This article presents the results of a research that addresses the impact of educational technologies and remote teaching in Bahia, such as the advent of the Covid-19 pandemic. However, despite the various aspects addressed in the research, the option of clipping the text was for Field Education. The methodology used was quanti-qualitative, whose subjects were teachers of basic education and higher education in the public and private networks. The data collection instrument was a questionnaire prepared by the Google Forms, and sent to the subjects through social networks and WhatsApp. As a result of the research, we observed that despite the standardization of remote education, teachers and students did not have objective and subjective conditions to successfully operate it due to the lack of adequate infrastructure, in addition to the lack of continued training and access to digital technologies.

3.
Revista Cientifica Da Faculdade De Educacao E Meio Ambiente ; 12:39-53, 2021.
Article in Portuguese | Web of Science | ID: covidwho-1743567

ABSTRACT

Violence against women has always been a dilemma in Brazil and around the world, and due to the COVID-19 pandemic, women began to have greater contact and coexistence with their aggressor. This article was based on the objectives of demonstrating the types of violence that victims suffer, the increase in cases of domestic violence during the COVID-19 pandemic, as well as legal provisions. The thematic approach was justified because the domestic violence in question occurs as a result of the condition of the female gender, as specified by a certain law and because it denotes an atypical period, in which the victim cannot leave the house and seek help. The research revealed that domestic violence in times of pandemic, despite making women more vulnerable, allowed new ways to denounce and identify the aggressors. It is expected that, with the existing legislation and the ease of interaction in social networks, these violent relationships will be broken, allowing the recovery of women's integrity and morals and an increase in complaints. A qualitative research methodology was used to understand this social phenomenon, with the basic purpose of developing greater knowledge about the types of violence and an increase in cases during the pandemic. Through the bibliographic procedure, through books and scientific articles, we sought to define concepts and information about violence, as well as the use of statisticians, in addition to the documental procedure for interpreting legislative norms. Through the descriptive method, data were obtained, using the largest amount of information to establish relationships with the other results. The hypothetical-deductive method occurred due to a problem already mentioned, seeking to identify and report to society the types of violence, protective measures and points of support for women. It is the historical method for drawing up a timeline of protection laws.

4.
Revista Brasileira de Medicina do Trabalho ; 19(3):342-350, 2021.
Article in English | Scopus | ID: covidwho-1701446

ABSTRACT

Introduction: Telework has been an alternative for companies to remain active in the market during the coronavirus disease 2019 (COVID-19) pandemic. Objectives: To analyze the mains scientific evidence on the association between musculoskeletal pain and home office work during the COVID-19 pandemic. Methods: This is an integrative review guided by the following question: can workers present musculoskeletal pain due to home office work during the COVID-19 pandemic? The searches were conducted on the bases de dados MEDLINE (via PubMed), Cochrane Library, Scopus (Elsevier), Web of Science, Taylor & Francis, Embase, LILACS and SciELO databases. The study included articles published from March 2020 until the time of data collection, which occurred on April 20th, 2021. Results: The main findings showed complaints of increased musculoskeletal pain, especially in the low back region, followed by neck, except for a study in which the participants increased the number of hours of physical activity during the pandemic. Increased sedentary lifestyle, poor posture, and increased physical load due to household chores seemed to promote the onset of musculoskeletal disorders. The point prevalence of neck pain was significantly related to age, sex, health status, job satisfaction, and length of employment. The findings provided evidence that the impact on work and leisure was substantial. Conclusions: The pandemic worsened the musculoskeletal health of workers in different areas whose work activities were kept at home in the remote mode. However, engagement in physical activity during confinement periods was beneficial for reducing the prevalence of musculoskeletal pain. © 2021 Associacao Nacional de Medicina do Trabalho. All rights reserved.

5.
10th Brazilian Conference on Intelligent Systems, BRACIS 2021 ; 13074 LNAI:121-132, 2021.
Article in English | Scopus | ID: covidwho-1599541

ABSTRACT

Early identification of patients with COVID-19 is essential to enable adequate treatment and to reduce the burden on the health system. The gold standard for COVID-19 detection is the use of RT-PCR tests. However, due to the high demand for tests, these can take days or even weeks in some regions of Brazil. Thus, an alternative for detecting COVID-19 is the analysis of Digital Chest X-rays (XR). Changes due to COVID-19 can be detected in XR, even in asymptomatic patients. In this context, models based on deep learning have great potential to be used as support systems for diagnosis or as screening tools. In this paper, we propose the evaluation of convolutional neural networks to identify pneumonia due to COVID-19 in XR. The proposed methodology consists of a preprocessing step of the XR, data augmentation, and classification by the convolutional architectures DenseNet121, InceptionResNetV2, InceptionV3, MovileNetV2, ResNet50, and VGG16 pre-trained with the ImageNet dataset. The obtained results for our methodology demonstrate that the VGG16 architecture presented a superior performance in the classification of XR, with an Accuracy of 85.11 %, Sensitivity of 85.25 %, Specificity of 85.16 %, F1-score of 85.03 %, and an AUC of 0.9758. © 2021, Springer Nature Switzerland AG.

6.
23rd International Conference on Human-Computer Interaction , HCII 2021 ; 13094 LNCS:326-341, 2021.
Article in English | Scopus | ID: covidwho-1565279

ABSTRACT

As the number of mobile devices has increased, software development teams have focused on releasing mobile applications, allowing users to carry out transactions, access information and improve their lifestyle more efficiently. Nevertheless, even when providing useful means for carrying out daily tasks, users report dissatisfaction or frustration when using these applications. For energy companies, mobile applications that fail to provide both usefulness and ease of use may reduce their adoption and an increase in the company’s workload, as users will require company workers to solve problems they could solve on their own. In this paper, we report how we applied exploratory testing and ad-hoc usability inspection to identify improvement opportunities during the development of a mobile application that would allow users to measure their power consumption, supporting social distancing in the context of the COVID-19 pandemic. After identified a set of functional and usability problems, the development team redesigned the application, which was perceived as both useful and easy to use from the point of view of the managers that requested it. Also, we report lessons learned that are useful for practitioners willing to replicate this experience. © 2021, Springer Nature Switzerland AG.

7.
European Heart Journal ; 42(SUPPL 1):2767, 2021.
Article in English | EMBASE | ID: covidwho-1554742

ABSTRACT

Introduction: Coronavirus disease 2019 (COVID-19) is a highly pathogenic coronavirus characterized by by systemic inflammatory response with endothelial damage and a dysregulated coagulation system. Despite most patients survive the acute setting of COVID-19, their longterm clinical sequelae are highly unclear. We have sought to identify the impact of post-COVID-19 syndrome on mid-term follow-up and gain some additional insights about the potential explanation for persistence of dyspnea. Methods: This is a 3-month prospective cohort study of previously hospitalised COVID-19 patients recruited from a single Spanish center, a small outpatient group without prior hospitalisation was also evaluated. Patients underwent serial testing with cardio-pulmonary exercise test (CPET), transthoracic echocardiogram, pulmonary lung test, six-minute walking test, serum biomarker analysis and quality of life questionaries. They were classify according to the presence of persistent dyspnea. Primary study outcome was predicted peak oxygen consumption (V02) according to CPET and predicted carbon monoxide diffusion capacity. Results: Our study included 41 (58.6%) patients with dyspnea and 29 (41.4%) asymptomatic. Symptomatic patients had a higher proportion of females (73.2% vs. 51.7%), but comparable age and prevalence of cardiovascular risk factors. We did not observe differences among the assessed variables in transthoracic echocardiogram and pulmonary function test. Patients who referred dyspnea had smaller predicted peak O2 consumption (77.8 [64-92.5] vs. 99 [88-105]: p<0.001), total distance in the 6-minute walking test (535 [467-600] vs. 611 [550-650] meters;p=0.001), and quality of life (KCCQ-23 60.1±18.6 vs. 82.8±11.3;p<0.001). Additionally, abnormalities in CPET were suggestive of a ventilation/perfusion misthmach or hyperventilatory syndrome characterized by impaired ventilatory efficiency with a greater VE/VCO2 slope (32 [28.1-37.4] vs. 29.4 [26.9- 31.4];p=0.022) and low PETCO2 (34 [32-39] vs. 38 [36-40];p=0.025). Interpretation: In this study >50% of COVID-19 survivors present a symptomatic functional impairment irrespective of age or prior hospitalization. Compared to asymptomatic patients, among those who referred dyspnea our findings suggest potential ventilatory inefficiency.

8.
International Journal of Burns & Trauma ; 11(5):412-417, 2021.
Article in English | MEDLINE | ID: covidwho-1548683

ABSTRACT

BACKGROUND: In December 2019, in Wuhan, China, several cases of viral pneumonia, caused by a new type of coronavirus (SARS-CoV-2, a disease that became known as COVID-19) emerged. Being an alarming situation, many resources were directed to fight this pandemic. However, other diseases and conditions, such as burn injuries, continued to occur in this period, thus creating multiple challenges. METHOD: Four patients with COVID-19 treated in a reference burn treatment centre from the Northeast region of Brazil, in the city of Fortaleza were analysed between April to June 2020. RESULTS: All patients were admitted in the service without signs of COVID-19 infection;however the symptoms appeared a few days after hospitalisation. The most common symptom was fever, especially when it occurred in only one spike. Patients who evolved to an unfavourable outcome had comorbidities prior to the infection and burn injury. In addition to this, these two patients had a worsening of their renal function, in contrast to the other two patients that received hospital discharge. CONCLUSION: The burned patient is a complex one that requires the health professional's attention and special care. This became even more evident during the period of the COVID-19 pandemic. Thus, the patients' changes and symptoms must be cautiously analysed, their diagnosis should not be delayed and it must be made under standardised protocols accordingly with the socio-economic and cultural realities of each service.

9.
Revista Cientifica Multidisciplinar RECIMA21 ; 2(8), 2021.
Article in Portuguese | CAB s | ID: covidwho-1548013

ABSTRACT

The social isolation instituted as a way of narrowing the transmission of Covid-19 is closely related to the increase in cases of domestic violence. The elaborated article aims to highlight factors that favor violent acts in the pandemic, with no intention of justifying any type of crime. The groups most affected by the context of confinement and violence are children, women and the elderly, as the existing fragility has gained elements susceptible to oppression, among them, the distance from the support network. The method included bibliographic searches in several databases, mainly in articles published from 2020 associated with Covid-19. In short, it highlights the need for information on actions capable of minimizing or extinguishing abusive acts in vulnerable populations.

10.
Research and Practice in Thrombosis and Haemostasis ; 5(SUPPL 2), 2021.
Article in English | EMBASE | ID: covidwho-1509161

ABSTRACT

Background: Hemostasis activation is a hallmark of COVID-19, and an integral part of a broader host response known as immunothrombosis. Microvesicles (MVs) are lipid-bilayer particles released from cells, and thought to be relevant mediators of immunothrombosis, due to their capacity to transfer proteins such as tissue factor (TF) and fibrinolytic mediators between different cells. Aims: To quantify platelet, endothelial cell (EC) and red blood cell (RBC) MVs in plasma from patients with COVID-19 and to explore their association with immunothrombosis mediators. Methods: Samples were obtained from patients admitted to a COVID-19 ward as part of a clinical trial. Samples were collected at admission, before any study intervention. MVs levels were measured in double centrifuged platelet poor plasma by flow cytometry. Coagulation, fibrinolysis and endothelial activation markers were measured by functional or immunological methods. The study was approved by the IRB and all participants provided written informed consent. Results: Data were obtained from 30 patients and 30 age and sexmatched healthy individuals. Mean time from symptoms onset and length of hospital stay (LOS) were 8.1 ± 2.3 days and 12.9 ± 9.8 days respectively. Twelve patients (40%) required intensive care (ICU), and 28/30 patients survived. Mean D-dimer was 3,609 ± 14,440 ng/mL. Platelet, EC and RBC MV counts are shown in Table 1. No association was observed between MV counts and clinical markers of disease severity such as LOS (total or in ICU), oximetry, and lung CT extension score. Associations between MV counts and biomarkers of coagulation, fibrinolysis and EC activation are shown in Table 2. Conclusions: Increased levels of MV from platelets and EC were observed in COVID-19. The association of these MVs with markers of coagulation and fibrinolytic activation, and with elements of the Tie2/Ang1 pathway warrant additional studies on the contribution of these pathways to the pathogenesis of COVID-19.

11.
ASAIO Journal ; 67(SUPPL 3):29, 2021.
Article in English | EMBASE | ID: covidwho-1481614

ABSTRACT

Background: Vancomycin is a hydrophilic antimicrobial is largely prescribed to gram-positive bacterial infections prophylaxis in patients receiving extracorporeal membrane oxygenation (ECMO). Otherwise, the use of ECMO may affect the vancomycin pharmacokinetics. Case Presentation Summary: A 3-days-old girl, 2865 g, 48.5 cm, term newborn, with a maternal respiratory coronavirus 2 (SARS-CoV-2) diagnosis. The patient remained hospitalized for transposition of large arteries, and received extracorporeal membrane oxygenation (ECMO) after surgery. Vancomycin therapy started with an empirical dose of 10 mg/kg every 12h for open chest prophylaxis. At the 12th hour a blood sample was collected with an undetectable value. The empirical dose was adjusted to 15 mg/Kg every 8h. Two steady-state blood samples were collected and the vancomycin area under the curve (AUC) estimated by the logarithmic trapezoidal rule was 419.1 mg/L.h, therefore the dose was maintained. After the ECMO therapy ended, another sample was collected at the 8th hour with 23 mg/L value, the vancomycin administration has stopped to decrease nephrotoxicity risk. The patient's chest was closed and stayed hospitalized for post-surgical observation and to ensure weight gain. Conclusion: Neonate patients receiving ECMO may require higher vancomycin doses than recommended by the data bases, mostly because of the increased volume distribution and the dose must be revaluate after the end of life support devices therapy. The vancomycin AUC-guided monitoring allows specific dose adjustments based on individual pharmacokinetic parameters in different critically ill patient's population and it can be implemented in clinical practice to maximize antimicrobial treatment.

13.
20a Conferencia da Associacao Portuguesa de Sistemas de Informacao, CAPSI 2020 - 20th Conference of the Portuguese Association for Information Systems, CAPSI 2020 ; 2020-October, 2020.
Article in Portuguese | Scopus | ID: covidwho-1399894

ABSTRACT

Due to the social isolation caused by the rapid expansion of COVID-19, several higher education institutions have replaced classroom classes with classes with synchronous communication. This investigation aims to identify the level of satisfaction related to the absorption of pedagogical content in online classes applied through synchronous communication. For that, we opted for the quantitative approach, using the data collection technique through the application of an online questionnaire. The investigation was carried out after the practice of the first two months, with students enrolled in face-to-face higher education, in the countries of Brazil and Portugal, who had their teaching changed to classes with synchronous communication, taught by videoconference, through digital platforms. The results showed that both in Brazil and in Portugal, there was greater student satisfaction regarding the absorption of teaching content in this period. © Atas da Conferencia da Associacao Portuguesa de Sistemas de Informacao 2020.

15.
European Psychiatry ; 64(S1):S279, 2021.
Article in English | ProQuest Central | ID: covidwho-1357199

ABSTRACT

IntroductionThe SARS-CoV-2 pandemic is affecting numerous dimensions of our society since the beginning of the outbreak. A significant increase in emotional distress was expected in the general population, particularly among the high-risk groups such as the oldest, chronic patients, healthcare professionals, and psychopathology vulnerable people. There was an urgent need to adapt and create solutions to promote mental health. Given the recommendations to minimize face-to-face interactions, several helplines were widely developed.ObjectivesIn this work, we aim to reflect on the experience of a university helpline, that integrated efforts with the regional mental health care services.MethodsA University helpline was created to give support to the regional community outside academia. The team was created on an online teamwork platform, to communicate through the chat, carry videoconference meetings, and store useful files. A Manchester screening decision tree was adopted, to define a set of guidelines to provide support to the callers, based mainly on the guidelines defined by the Order of Portuguese Psychologists. Liaison with the mental health care services, including other specific helplines, was established.ResultsNotwithstanding all the efforts, the number of received calls was scarce, similarly to helplines created by other national universities and by other entities.ConclusionsA new approach to psychological intervention in crisis is needed, maintaining integrated efforts, and taking advantage of the opportunity to foster personalized mental health care in the digital era. It is important to continuously assess the value of integrated efforts in patient care and to the healthcare system.

16.
HOLOS ; 37(1):1-11, 2021.
Article in Portuguese | ProQuest Central | ID: covidwho-1299740

ABSTRACT

ABSTRACT The present work of reflection on biological risk and biosafety in a hospital environment, based on safety and health measures for workers working in health services. The findings are presented in three categories: biological risk and biosafety in a hospital environment;working conditions and the safety of health professionals during the COVID-19 pandemic and the consequences of the pandemic on the health of these professionals. Given the current pandemic scenario, it is essential to provide adequate guidance for all workers, so that they are absolutely aware of the possibilities and risks in hospital environments, especially biological risk (coronavirus), and the institution should implement protective measures for COVID-19. Health Services, Containment of Biohazards, Health Personnel, Coronavirus Infections, Occupational Health. 1.INTRODUÇAO Dentre os vários tipos de ambientes de trabalho, os serviços de saúde oferecem riscos para seus profissionais, visto que, frequentemente, os expóem a condiçöes que podem resultar em acidentes e processos patológicos, quando medidas de proteçao individual e coletiva nao sao adotadas (Marziale et al., 2014).

17.
Strategic Design Research Journal ; 14(1):92-101, 2021.
Article in English | Scopus | ID: covidwho-1289115

ABSTRACT

This paper aims to reflect about opinions and reports about the Covid-19 impact on society and on the fashion industry from retail, luxury market professionals and consumer behaviour researchers. The pandemic impacts are analysed under the perspective of consumer behaviour and the demand for connection and affection from the isolation caused by the pandemic. Within these two dimensions, variables like biosafety, risk, time and technology were considered to formulate reflections on the future and to visualize opportunities, external threats and the impact on the internal strengths and weaknesses of different luxury, mass and differentiation business. The analysis was formulated based on books, research on websites in the digital sphere that encompass different opinions involved in the fashion world, as well as recent trend studies. To meet new consumer demands, a brand needs to be present in the digital environment and connect to its consumers on an emotional level through its purpose, values and communication, by means of virtual and physical channels in a fluid, direct and transparent way. Small businesses may have a greater capacity to adapt to the new post-Covid-19 moment, due to the agility of responding to adversities. © 2021 Universidade do Vale do Rio dos Sinos. All rights reserved.

18.
Topics in Antiviral Medicine ; 29(1):71, 2021.
Article in English | EMBASE | ID: covidwho-1250007

ABSTRACT

Background: SARS-CoV-2 is responsible for the development of COVID-19 in infected individuals, who can exhibit mild to severe symptoms including acute respiratory distress syndrome (ARDS). Critical patients developing ARDS are characterized by exacerbated inflammation and dysregulated adaptive immune responses. However, the differential association of specific myeloid subsets of dendritic cells (DC) and monocytes (Mo) to the induction of ARDS in these critical COVID-19 patients is poorly understood. Methods: A total of 64 COVID-19 patients qPCR positive for SARS-CoV were included in the study. Patients were stratified into 3 subgroups attending to non-severe (G1), severe (G2) and critical (G3) severity based on changes in respiratory frequency (RF), partial pressure arterial oxygen and fraction of inspired oxygen ratio (PaO2/FiO2) and respiratory failure values. PBMC were obtained from blood samples collected from all COVID-19 patient subgroups and with paired cell infiltrates from bronchial aspirates in the case of critical G3 patients requiring respiratory support. PBMC samples from n=22 non-COVID individuals were also included for comparison purposes. Expression of markers defining different DC and Mo subsets and their level of activation were analyzed by multicolor flow cytometry. Results: CD141+ conventional and CD123hi plasmacytoid DCs were similarly depleted from blood in COVID19 patients (p<0.0001;p<0.0001) from all severity subgroups but were absent in the lung infiltrates from critical individuals. In contrast, CD1c+ DC, inflammatory transitional and non-classical Mo were dramatically depleted from the blood and preferentially enriched in lung infiltrates in patients with critical G3 COVID-19 individuals (p<0.01;p<0.001;p<0.001). Remarkably, proportions of transitional Mo in the blood were increased in G1 COVID19 patients exhibiting non-severe progression. Importantly, myeloid subsets infiltrating the lung of critical G3 COVID19 patients were characterized by increased expression of the activation marker CD40. Moreover, activated CD38+ CXCR5+ and CD38+ CXCR5-CD8+ T cells were enriched in the lungs from critical COVID-19 patients (p<0.001;p<0.05). Finally, higher levels of CD40 on transitional Mo were positively associated with proportions of CD38+ CXCR5-CD8+ T cells in the lung. Conclusion: The study identified the recruitment of specific myeloid subsets from the blood to the lung in critical COVID-19 patient that could be targeted by future therapies.

19.
International Journal of Modern Physics C ; 32(3):6, 2021.
Article in English | Web of Science | ID: covidwho-1203988

ABSTRACT

We investigate the spreading of SARS-CoV-2 in the state of Alagoas, northeast of Brazil, via an adaptive susceptible-infected-removed (SIR) model featuring dynamic recuperation and propagation rates. Input parameters are defined based on data made available by Alagoas Secretary of Health from April 19, 2020 on. We provide with the evolution of the basic reproduction number R-0 and reproduce the historical series of the number of confirmed cases with less than 10% error. We offer predictions, from November 16 forward, over the epidemic situation in the near future and show that it will keep decelerating. Furthermore, the same model can be used to study the epidemic dynamics in other countries with great easiness and accuracy.

20.
Physica A ; 569: 125773, 2021 May 01.
Article in English | MEDLINE | ID: covidwho-1065530

ABSTRACT

We study the spreading of SARS-CoV-2 in Brazil based on official data available since March 22, 2020. Calculations are done via an adaptive susceptible-infected-removed (SIR) model featuring dynamical recuperation and propagation rates. We are able reproduce the number of confirmed cases over time with less than 5% error and also provide with short- and long-term predictions. The model can also be used to account for the epidemic dynamics in other countries with great accuracy.

SELECTION OF CITATIONS
SEARCH DETAIL