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1.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 5700-5704, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33019269

RESUMO

Passive health monitoring has been introduced as a solution for continuous diagnosis and tracking of subjects' condition with minimal effort. This is partially achieved by the technology of passive audio recording although it poses major audio privacy issues for subjects. Existing methods are limited to controlled recording environments and their prediction is significantly influenced by background noises. Meanwhile, they are too compute-intensive to be continuously running on smart phones. In this paper, we implement an efficient and robust audio privacy preserving method that profiles the background audio to focus only on audio activities detected during recording for performance improvement, and to adapt to the noise for more accurate speech segmentation. We analyze the performance of our method using audio data collected by a smart watch in lab noisy settings. Our obfuscation results show a low false positive rate of 20% with a 92% true positive rate by adapting to the recording noise level. We also reduced model memory footprint and execution time of the method on a smart phone by 75% and 62% to enable continuous speech obfuscation.


Assuntos
Meios de Comunicação , Smartphone , Percepção da Fala , Ruído/efeitos adversos , Fala
2.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 4381-4384, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33018966

RESUMO

Increased concentrations of lactate levels in blood are often seen in patients with life-threatening cellular hypoperfusion or infections. State-of-the-art techniques used in clinical practice for measuring serum lactate concentrations rely on intermittent blood sampling and do not permit continuous monitoring of this all important parameter in critical care environments.In recent years, Near Infrared (NIR) Spectroscopy has been established as a possible alternative to existing methods that can mitigate these constraints and be used for non-invasive continuous monitoring of lactate. Nevertheless, the dominant absorption of -OH overtone bands of water in the NIR presents a challenge and complicates the accurate detection of other absorbers such as lactate. For this reason, comprehensive analysis of the -OH overtone bands with systematic lactate concentration changes is essential. This paper reports on the analysis of NIR spectra of two aqueous systems of varying concentrations of lactate in saline and whole blood using the principles of Aquaphotomics.The results show distinctive conformational and structural differences in lactate-water binding, which arise due to the molecular interactions of bonds present in respective solvents.


Assuntos
Meios de Comunicação , Ácido Láctico , Humanos , Solução Salina , Solventes , Água
3.
Artigo em Inglês | MEDLINE | ID: mdl-33017934

RESUMO

Cardiovascular disease is one of the leading factors for death cause of human beings. In the past decade, heart sound classification has been increasingly studied for its feasibility to develop a non-invasive approach to monitor a subject's health status. Particularly, relevant studies have benefited from the fast development of wearable devices and machine learning techniques. Nevertheless, finding and designing efficient acoustic properties from heart sounds is an expensive and time-consuming task. It is known that transfer learning methods can help extract higher representations automatically from the heart sounds without any human domain knowledge. However, most existing studies are based on models pre-trained on images, which may not fully represent the characteristics inherited from audio. To this end, we propose a novel transfer learning model pre-trained on large scale audio data for a heart sound classification task. In this study, the PhysioNet CinC Challenge Dataset is used for evaluation. Experimental results demonstrate that, our proposed pre-trained audio models can outperform other popular models pre-trained by images by achieving the highest unweighted average recall at 89.7 %.


Assuntos
Meios de Comunicação , Ruídos Cardíacos , Dispositivos Eletrônicos Vestíveis , Acústica , Humanos , Aprendizado de Máquina
4.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 2129-2132, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33018427

RESUMO

Cardiovascular diseases are the biggest threat to human being's health all over the world, and carotid atherosclerotic plaque is the leading cause of ischemic cardiovascular diseases. To determine the location and shape of the plaque, it is of great significance to detect the intima-media (IM). In this paper, a new IM detection method based on convolution neural network (IMD-CNN) is proposed for the detection of IM of blood vessels in longitudinal ultrasonic images. In IMD-CNN, firstly the region of interest (ROI) is automatically extracted by morphological processing, then the patch-wise training data are constructed, and finally a simple CNN is trained to detect the IM. The experimental results obtained on 23 images show that the test accuracy of IMD-CNN is over 86% and the performance of IMD-CNN is also visually proved to be effective.


Assuntos
Meios de Comunicação , Placa Aterosclerótica , Espessura Intima-Media Carotídea , Humanos , Redes Neurais de Computação , Placa Aterosclerótica/diagnóstico por imagem , Ultrassonografia
5.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 2147-2150, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33018431

RESUMO

Preterm newborns are prone to late-onset sepsis, leading to a high risk of mortality. Video-based analysis of motion is a promising non-invasive approach because the behavior of the newborn is related to his physiological state. But it is needed to analyze only images where the newborn is solely present in incubator. In this context, we propose a method for video-based detection of newborn presence. We use deep transfer learning: bottleneck features are extracted from a pre-trained deep neural network and then a classifier is trained with these features on our database. Moreover, we propose a strategy that allows to take advantage of temporal consistency. On a database of 11 newborns with 56 days of video recordings, the results show a balanced accuracy of 80%.


Assuntos
Meios de Comunicação , Redes Neurais de Computação , Bases de Dados Factuais , Humanos , Incubadoras , Recém-Nascido , Aprendizado de Máquina
6.
Rev. esp. geriatr. gerontol. (Ed. impr.) ; 55(5): 266-271, sept.-oct. 2020. tab
Artigo em Espanhol | IBECS | ID: ibc-192479

RESUMO

ANTECEDENTES Y OBJETIVO: La pandemia de la COVID-19 afecta de manera diferencial a distintos grupos etarios, concentrándose la mayor parte de fallecimiento entre las personas más mayores y con afecciones de salud previas. Esto ha implicado una mayor presencia de los mayores en la agenda informativa de todos los medios de comunicación. Este artículo pretende analizar esos discursos y representaciones relacionados con los mayores tal y como se presentan en los titulares de publicaciones difundidas en 2diarios de alcance nacional (ABC y El País) durante la fase más crítica de la pandemia en España. MATERIALES Y MÉTODOS: Se analizaron 501 titulares relacionados con los mayores y la pandemia COVID-19 (380 del ABC y 121 de El País) desde la perspectiva de los Estudios Críticos del Discurso (van Dijk, 2003) y llevándose a cabo un análisis de contenido. RESULTADOS: El 71,4% de los titulares representaban de manera desfavorable a los mayores, presentándolos como un grupo homogéneo y asociándolos a fallecimientos, deficiencias en la atención residencial o vulnerabilidad extrema. La presencia de ciertos términos potencialmente peyorativos o impropios (ancianos, abuelos) estaba en coherencia con esa representación negativa. CONCLUSIONES: A la luz de esos resultados, se discute en qué medida la pandemia de la COVID-19 puede reforzar una narrativa edadista de los mayores, basada en la fragilidad, el declive y la dependencia, que pueda justificar prácticas discriminatorias dirigidas a este sector de la población


BACKGROUND AND OBJECTIVE: The COVID-19 pandemic affects various age groups differently, with most deaths concentrated among the older population and those with previous health conditions. This has led to a greater presence of older people in the agenda setting of all the media. This article aims to analyse these discourses and representations related to older people as presented in the headlines of publications disseminated in 2national newspapers (ABC and El País) during the most critical phase of the pandemic in Spain. MATERIALS AND METHODS: An analysis was made of 501 headlines related to older people and the COVID-19 pandemic (380 from ABC, and 121 from El País) from the perspective of the Critical Discourse Studies (Van Dijk, 2003), as well as carrying out a content analysis. RESULTS: 71.4% of the headlines represented the Older adults were represented unfavourably in 71.4% of the headlines, with them being presented as a homogeneous group and associating them with deaths, deficiencies in residential care, or extreme vulnerability. The presence of certain potentially derogatory or improper terms (elderly, grandparents) was consistent with this negative representation. CONCLUSIONS: In light of these results, it is discussed to what extent the COVID-19 pandemic may reinforce an ageist narrative of the older people, based on frailty, decline, and dependency, which may justify discriminatory practices directed at this sector of the population


Assuntos
Humanos , Idoso , Ageismo/estatística & dados numéricos , Infecções por Coronavirus/epidemiologia , Idoso/estatística & dados numéricos , Jornais como Assunto/estatística & dados numéricos , Pandemias , Espanha/epidemiologia , Meios de Comunicação/estatística & dados numéricos
7.
Washington, D.C.; OPS; 2020-10-26. (OPS/CMU/PA/COVID-19/20-003).
em Espanhol | PAHO-IRIS | ID: phr-52934

RESUMO

Con la propagación de la enfermedad por el coronavirus del 2019 (COVID-19) entre la mayoría de los países del mundo, y ante la falta de una cura o vacuna, la información es una herramienta vital para que las personas adopten las medidas de prevención existentes para protegerse y salvar vidas. En este contexto, los medios de comunicación tienen un papel esencial a la hora de informar sobre la COVID-19, con responsabilidad ética ya que las personas probablemente escucharán sus consejos. En este documento se procura brindar herramientas para que los periodistas puedan realizar una cobertura responsable de la pandemia y brindar información basada en la evidencia. También se proponen enfoques para la cobertura y se incentiva a que el periodismo aporte consejos y soluciones que contribuyan a reducir los riesgos para la salud y salvar vidas.


Assuntos
Infecções por Coronavirus , Coronavirus , Infecções por Coronavirus , Saúde Pública , Epidemias , Meios de Comunicação de Massa , Meios de Comunicação , Mídias Sociais , Comunicação
8.
Math Biosci Eng ; 17(4): 3147-3159, 2020 04 17.
Artigo em Inglês | MEDLINE | ID: mdl-32987521

RESUMO

Awareness of prevention is enhanced to reduce the rate of infection by media coverage, which plays an important role in preventing and controlling infectious diseases. Based on epidemic situation of the Corona Virus Disease 2019 (COVID-19) in Hubei, an SIHRS epidemic model with media coverage was proposed. Firstly, by the basic reproduction number R0, the globally asymptotically stable of the disease-free equilibrium and the endemic equilibrium were proved. Then, based on the reported epidemic data of Hubei Province from January 26 to February 13, numerical simulations are used to verify the analysis results, and the impact of peak time and the scale of disease transmission were mainly considered with different information implementation rate and the contact rate. It was shown that with the decrease of information implementation rate, the peak of confirmed cases would be delayed to reach, and would increase significantly. Therefore, in order to do a better prevention measures after resumption of work, it is very necessary to maintain the amount of information and implementation rate of media coverage.


Assuntos
Betacoronavirus , Meios de Comunicação , Infecções por Coronavirus/epidemiologia , Pandemias , Pneumonia Viral/epidemiologia , Número Básico de Reprodução/estatística & dados numéricos , China/epidemiologia , Simulação por Computador , Infecções por Coronavirus/prevenção & controle , Infecções por Coronavirus/transmissão , Epidemias/prevenção & controle , Epidemias/estatística & dados numéricos , Humanos , Conceitos Matemáticos , Modelos Biológicos , Pandemias/prevenção & controle , Pandemias/estatística & dados numéricos , Pneumonia Viral/prevenção & controle , Pneumonia Viral/transmissão , Quarentena/estatística & dados numéricos , Mídias Sociais
9.
Math Biosci Eng ; 17(4): 3618-3636, 2020 05 13.
Artigo em Inglês | MEDLINE | ID: mdl-32987547

RESUMO

A new COVID-19 epidemic model with media coverage and quarantine is constructed. The model allows for the susceptibles to the unconscious and conscious susceptible compartment. First, mathematical analyses establish that the global dynamics of the spread of the COVID-19 infectious disease are completely determined by the basic reproduction number R0. If R0 ≤ 1, then the disease free equilibrium is globally asymptotically stable. If R0 > 1, the endemic equilibrium is globally asymptotically stable. Second, the unknown parameters of model are estimated by the MCMC algorithm on the basis of the total confirmed new cases from February 1, 2020 to March 23, 2020 in the UK. We also estimate that the basic reproduction number is R0 = 4.2816(95%CI: (3.8882, 4.6750)). Without the most restrictive measures, we forecast that the COVID-19 epidemic will peak on June 2 (95%CI: (May 23, June 13)) (Figure 3a) and the number of infected individuals is more than 70% of UK population. In order to determine the key parameters of the model, sensitivity analysis are also explored. Finally, our results show reducing contact is effective against the spread of the disease. We suggest that the stringent containment strategies should be adopted in the UK.


Assuntos
Betacoronavirus , Meios de Comunicação , Infecções por Coronavirus/epidemiologia , Pandemias , Pneumonia Viral/epidemiologia , Quarentena , Algoritmos , Número Básico de Reprodução/estatística & dados numéricos , Infecções por Coronavirus/prevenção & controle , Infecções por Coronavirus/transmissão , Humanos , Cadeias de Markov , Conceitos Matemáticos , Modelos Biológicos , Método de Monte Carlo , Pandemias/prevenção & controle , Pandemias/estatística & dados numéricos , Pneumonia Viral/prevenção & controle , Pneumonia Viral/transmissão , Fatores de Tempo , Reino Unido/epidemiologia
11.
RECIIS (Online) ; 14(3): 633-643, jul.-set. 2020.
Artigo em Português | LILACS | ID: biblio-1121788

RESUMO

O fenômeno do efeito contágio na mídia não é novo, mas muito atual. No Brasil a mídia é a terceira maior causa de suicídio em jovens de 15 a 29 anos, e um grave problema de saúde pública. Nesse ensaio desvelamos por meio de uma revisão bibliográfica as evidências que suportam o efeito epidêmico de suicídio na mídia e seus modos de operação por meio de teorias como a de Albert Bandura e sua Teoria da Aprendizagem Social. Tal relação é aqui prestigiada em função dos mais recentes sucessos como 13 Reasons Why e Euphoria, que descrevem o suicídio e comportamentos autodestrutivos de forma curiosamente descuidada. Apontamos como urgente a necessidade de normatização legal da produção e distribuição dessas mensagens nos meios de comunicação social brasileiros, que venha a contemplar os diversos gêneros audiovisuais e, sobretudo, os novos suportes de veiculação caracterizados por seu modelo assincrônico de distribuição de conteúdo.


The phenomenon of the contagion effect in the media is not new, but very current. In Brazil, the media is the third leading cause of suicide in young people aged 15 to 29, and a serious public health problem. In this text, we unveiled through a bibliographic review the evidence that supports the epidemic effect of suicide in the media and its modes of operation through theories such as that of Albert Bandura and his Theory of Social Learning. This relationship is prestigious here due to the most recent hits such as 13 Reasons Why and Euphoria, which describe suicide and self-destructive behaviors in a curiously careless way. We point out as urgent the need for legal regulation of the production and distribution of these messages in the Brazilian media, which will include the various audiovisual genres and, above all, the new media that are characterized by their asynchronous model of content distribution.


El fenómeno del efecto contagio en los medios no es nuevo, sino muy actual. En Brasil, los medios son la tercera causa principal de suicidio en jóvenes de 15 a 29 años y un grave problema de salud pública. En este texto, revelamos a través de una revisión bibliográfica la evidencia que respalda el efecto epidémico del suicidio en los medios y sus modos de operación a través de teorías como la de Albert Bandura y su Teoría del aprendizaje social. Esta relación es prestigiosa aquí debido a los éxitos más recientes, como 13 Razones Por Qué y Euforia, que describen el suicidio y los comportamientos autodestructivos de una manera curiosamente descuidada. Señalamos como urgente la necesidad de una regulación legal de la producción y distribución de estos mensajes en los medios brasileños, que incluirán los diversos géneros audiovisuales y, sobre todo, los nuevos medios que se caracterizan por su modelo asíncrono de distribución de contenido.


Assuntos
Humanos , Adolescente , Recursos Audiovisuais , Suicídio , Brasil , Comportamento Autodestrutivo , Meios de Comunicação , Comunicação Social , Rede Social , Mídias Sociais
14.
Artigo em Inglês | MEDLINE | ID: mdl-32781727

RESUMO

COVID-19 is lasting longer than expected, which has a huge impact on the economy and on personal life. Each country has a different response method, and the damage scale is also distinct. This study aims to find out how COVID-19-related news was handled in the domestic media to seek ways to minimize the pandemic. The paper focuses on the number of news features by period and by disaster and analyzes related words based on big data. The results of the analysis are as follows. First, in the initial response phase, keywords to identify accurate sources of actual broadcast contents, fake news, social networking service (SNS), etc. were also ranked in the top 20. Second, in the active response phase, when the number of confirmed persons and the government's countermeasures were announced, more than 100 COVID-19-related articles were issued, and the related words increased rapidly from the initial response stage. Therefore, the fact that COVID-19 has been expressed as a keyword indicates that our society is watching with great interest in the government's response to the disease.


Assuntos
Big Data , Meios de Comunicação/estatística & dados numéricos , Infecções por Coronavirus/epidemiologia , Pneumonia Viral/epidemiologia , Betacoronavirus , Governo , Humanos , Meios de Comunicação de Massa/estatística & dados numéricos , Pandemias , Mídias Sociais/estatística & dados numéricos
15.
Artigo em Inglês | MEDLINE | ID: mdl-32806772

RESUMO

During the Covid-19 pandemic, risk communication has often been ineffective, and from this perspective "fake news" has found fertile ground, both as a cause and a consequence of it. The aim of this study is to measure how much "fake news" and corresponding verified news have circulated in Italy in the period between 31 December 2019 and 30 April 2020, and to estimate the quality of informal and formal communication. We used the BuzzSumo application to gather the most shared links on the Internet related to the pandemic in Italy, using keywords chosen according to the most frequent "fake news" during that period. For each research we noted the numbers of "fake news" articles and science-based news articles, as well as the number of engagements. We reviewed 2102 articles. Links that contained fake news were shared 2,352,585 times, accounting for 23.1% of the total shares of all the articles reviewed. Our study throws light on the "fake news" phenomenon in the SARS-CoV-2 pandemic. A quantitative assessment is fundamental in order to understand the impact of false information and to define political and technical interventions in health communication. Starting from this evaluation, health literacy should be improved by means of specific interventions in order to improve informal and formal communication.


Assuntos
Meios de Comunicação/estatística & dados numéricos , Meios de Comunicação/normas , Infecções por Coronavirus/epidemiologia , Comunicação em Saúde/normas , Pneumonia Viral/epidemiologia , Betacoronavirus , Letramento em Saúde , Humanos , Itália/epidemiologia , Pandemias
17.
PLoS One ; 15(8): e0236953, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32764830

RESUMO

Collective emotion is the synchronous convergence of an effective response across individuals toward a specific event or object. Previous studies have focused on the transmission of cyber collective emotion; however, little attention has been paid to the transmission of collective emotion in face-to-face interactions. Using an experimental design, we examined how emotions are transmitted from some members to the whole group in face-to-face situations. We used a news report of a social event as an emotion stimulus to induce anger and disgust in 158 middle school students aged 12 to 15, with an average age of 13.20 years (SD = 0.651) We randomly assigned one-third of the participants to be "transmitters," while the others were "receivers." Transmitters shared their feelings with receivers; then, receivers communicated with other group members. The results indicated that negative collective emotions were transmitted from high- to low-intensity members, which converged through the effect of emotional contagion. It accumulated through the effect of an emotional circle, during which the feedback reinforced emotion intensity. The collective emotion transmission model comprised emotion diffusion, contagion, and accumulation. This model elucidates the intrinsic features of collective emotion transmission, enriches the research on collective emotion, and provides theoretical references for monitoring and managing future public events.


Assuntos
Emoções , Relações Interpessoais , Modelos Psicológicos , Adolescente , Criança , China , Meios de Comunicação , Expressão Facial , Feminino , Humanos , Masculino
18.
Artigo em Inglês | MEDLINE | ID: mdl-32708231

RESUMO

An increased use of social networks is one of the most far-reaching consequences of the COVID-19 pandemic. Aside from the traditional media, as the main drivers of social communication in crisis situations, individual profiles have emerged supported by social networks, which have had a similar impact to the more specialized communication media. This is the hypothesis of the research presented, which is focused on health communication and based on a virtual ethnography methodology with the use of social metrics. The aim is to understand the relationship established between the population in general and digital media in particular through the measurement of engagement. In this regard, a comparative study was carried out that describes this phenomenon over a period of six months on three social networks: YouTube, Twitter and Instagram, with a sample composed of specialized health media versus healthcare professionals. The results point to a new communications model that opens up a new space for agents whose content has a degree of engagement comparable to and even exceeding that of digital media specialized in health communication. The conclusions show that the crisis of the pandemic has accelerated the transformation of the communication sector, creating new challenges for the communication industry, media professionals, and higher education institutions related to market demands.


Assuntos
Betacoronavirus/isolamento & purificação , Meios de Comunicação , Infecções por Coronavirus/epidemiologia , Pessoal de Saúde , Pandemias , Pneumonia Viral/epidemiologia , Rede Social , Infecções por Coronavirus/virologia , Humanos , Internet , Pneumonia Viral/virologia , Espanha/epidemiologia
19.
Artigo em Inglês | MEDLINE | ID: mdl-32727042

RESUMO

The use of telemedicine has greatly increased, largely derived from the COVID-19 pandemic, which has created the need for a guide aimed towards the adequate management of a modality of health care: the video consultation. A Delphi study composed of three rounds was conducted with 16 experts in holding video consultations and managing non-technical skills from different specialties and nationalities to conceive a consensus on the criteria needed for properly managing video consultations by healthcare professionals. The consensus criteria were defined by three dimensions (preparation of video consultation, video consultation process, and post-video consultation) and their corresponding items. Excellent consensus data was obtained; therefore, use is recommended by any healthcare professional who is going to utilize a video consultation, in order to manage it effectively.


Assuntos
Telemedicina/normas , Adulto , Betacoronavirus , Meios de Comunicação , Infecções por Coronavirus , Assistência à Saúde , Técnica Delfos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pandemias , Pneumonia Viral , Encaminhamento e Consulta , Telemedicina/métodos
20.
Clin Ter ; 171(4): e321-e327, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32614366

RESUMO

The context in which people consume health information has changed with the diffusion of the mobile media. The interactive health communication influences the health care system with its information dissemination, health promotion and support for health services. The object of this study is to analyze the relationships between mobile media and the credibility of health sources. The health sources include health professionals, mass media, and family/friends. Mobile media have been conceptualized at two levels. The individual-level analysis sees mobile media as a medium through which users receive information, and examines how the individual use of mobile media affects users' perceived credibility of health sources. The country-level analysis sees mobile media as a context in which trust in health sources is constructed, and examines how mobile contexts affect perceived credibility of health sources. The individual-level data came from a large cross-national survey conducted by the European Barometer in May, 2016, which aims to investigate people's opinions about antibiotics. The country-level data have been obtained from the United Nations and the European Social Survey. All the data have been combined into the final sample, consisting of 25,896 respondents in 26 European countries. For the main effects, the mobile phone penetration is negatively related to health professionals but positively related to media and family or friends. The wireless broadband penetration is positively related to health professionals but negatively related to family or friends. The health performance is positively related to health professionals but negatively related to family or friends. The post-materialistic culture is negatively related to media.


Assuntos
Telefone Celular , Meios de Comunicação , Comunicação em Saúde , Confiança , Atitude , Meios de Comunicação/normas , Europa (Continente) , Feminino , Comunicação em Saúde/normas , Humanos , Masculino , Aplicativos Móveis
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