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1.
J Biomed Opt ; 25(10)2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-33089674

RESUMO

SIGNIFICANCE: The COVID-19 pandemic is changing the landscape of healthcare delivery in many countries, with a new shift toward remote patient monitoring (RPM). AIM: The goal of this perspective is to highlight the existing and future role of wearable and RPM optical technologies in an increasingly at-home healthcare and research environment. APPROACH: First, the specific changes occurring during the COVID-19 pandemic in healthcare delivery, regulations, and technological innovations related to RPM technologies are reviewed. Then, a review of the current state and potential future impact of optical physiological monitoring in portable and wearable formats is outlined. RESULTS: New efforts from academia, industry, and regulatory agencies are advancing and encouraging at-home, portable, and wearable physiological monitors as a growing part of healthcare delivery. It is hoped that these shifts will assist with disease diagnosis, treatment, management, recovery, and rehabilitation with minimal in-person contact. Some of these trends are likely to persist for years to come. Optical technologies already account for a large portion of RPM platforms, with a good potential for future growth. CONCLUSIONS: The biomedical optics community has a potentially large role to play in developing, testing, and commercializing new wearable and RPM technologies to meet the changing healthcare and research landscape in the COVID-19 era and beyond.


Assuntos
Infecções por Coronavirus , Pandemias , Pneumonia Viral , Telemedicina , Dispositivos Eletrônicos Vestíveis , Betacoronavirus , Redes de Comunicação de Computadores , Humanos , Tecnologia de Sensoriamento Remoto
2.
Artigo em Inglês | MEDLINE | ID: mdl-32872667

RESUMO

AIM: In this study we have investigated the problem of cost effective wireless heart health monitoring from a service design perspective. SUBJECT AND METHODS: There is a great medical and economic need to support the diagnosis of a wide range of debilitating and indeed fatal non-communicable diseases, like Cardiovascular Disease (CVD), Atrial Fibrillation (AF), diabetes, and sleep disorders. To address this need, we put forward the idea that the combination of Heart Rate (HR) measurements, Internet of Things (IoT), and advanced Artificial Intelligence (AI), forms a Heart Health Monitoring Service Platform (HHMSP). This service platform can be used for multi-disease monitoring, where a distinct service meets the needs of patients having a specific disease. The service functionality is realized by combining common and distinct modules. This forms the technological basis which facilitates a hybrid diagnosis process where machines and practitioners work cooperatively to improve outcomes for patients. RESULTS: Human checks and balances on independent machine decisions maintain safety and reliability of the diagnosis. Cost efficiency comes from efficient signal processing and replacing manual analysis with AI based machine classification. To show the practicality of the proposed service platform, we have implemented an AF monitoring service. CONCLUSION: Having common modules allows us to harvest the economies of scale. That is an advantage, because the fixed cost for the infrastructure is shared among a large group of customers. Distinct modules define which AI models are used and how the communication with practitioners, caregivers and patients is handled. That makes the proposed HHMSP agile enough to address safety, reliability and functionality needs from healthcare providers.


Assuntos
Inteligência Artificial , Fibrilação Atrial , Redes de Comunicação de Computadores , Frequência Cardíaca , Monitorização Ambulatorial , Monitorização Fisiológica/economia , Fibrilação Atrial/complicações , Fibrilação Atrial/diagnóstico , Fibrilação Atrial/economia , Fibrilação Atrial/fisiopatologia , Eficiência Organizacional/economia , Humanos , Sistemas de Informação , Monitorização Ambulatorial/economia , Monitorização Ambulatorial/métodos , Monitorização Fisiológica/métodos , Reprodutibilidade dos Testes , Processamento de Sinais Assistido por Computador
3.
Edumecentro ; 12(3): 261-276, jul.-set. 2020.
Artigo em Espanhol | LILACS | ID: biblio-1124714

RESUMO

RESUMEN Introducción: la educación superior asume estudiantes influenciados por las redes sociales digitales cuyo poder de compartir, crear e informar se convierte en un elemento esencial en sus vidas, por ello demandan de los docentes incorporar nuevas formas de enseñanza. Objetivo: describir la posibilidad de uso de las redes sociales en la docencia y la asistencia médicas. Métodos: se realizó una revisión de fuentes bibliográficas en SciELO, Google Académico e Infomed entre 2015-2019, a partir de las palabras clave: redes sociales digitales, aprendizaje, estudiantes, herramientas web. Se seleccionaron 24 documentos por su pertinencia en el estudio. Resultados: se constató a través de la revisión que las redes sociales han supuesto una revolución en internet, por lo que han sido adoptadas por algunos profesionales de la salud como un medio para la gestión de conocimientos, difundir información y fortalecer la asistencia y la docencia. Los subtemas revisados se relacionan con algunas precisiones teóricas sobre ellas, su uso en la enseñanza médica y el vínculo establecido por pacientes con los mismos intereses o enfermedades; y se comparten opiniones sobre la confiabilidad científica de su información sobre salud. Conclusiones: las redes sociales pueden ser utilizadas en la docencia y la asistencia médicas, siempre bajo la dirección de profesionales de la salud que garanticen la cientificidad de la información que se comparte.


ABSTRACT Introduction: higher education involves students influenced by digital social networks whose power to share, create and communicate becomes an essential element in their lives, so it demands from teachers to incorporate new ways of teaching. Objective: to describe the possibility of using social networks in teaching and health care. Methods: a review of bibliographic sources in SciELO, Google Academic and Infomed was carried out from 2015 to 2019, based on the key words: digital social networks, learning, students, web tools. Twenty-four documents were chosen for their relevance to the study. Results: through the review it was found that social networks have been a revolution on the Internet, so it has been adopted by some health professionals as a means to manage knowledge, disseminate information and strengthen care and teaching. The subtopics reviewed are related to some theoretical precisions about them, their use in medical education and the link established by patients with the same interests or diseases; and opinions about the scientific reliability of its information related to health, are shared. Conclusions: social networks can be used in medical teaching and care, always with the guidance of health professionals who guarantee the scientific reliability of the information to be shared.


Assuntos
Estudantes de Medicina , Redes de Comunicação de Computadores , Aplicações da Informática Médica , Educação Médica
4.
PLoS One ; 15(8): e0238073, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32845901

RESUMO

Transmission opportunity (TXOP) is a key factor to enable efficient channel bandwidth utilization over wireless campus networks (WCN) for interactive multimedia (IMM) applications. It facilitates in resource allocation for the similar categories of multiple packets transmission until the allocated time is expired. The static TXOP limits are defined for various categories of IMM traffics in the IEEE802.11e standard. Due to the variation of traffic load in WCN, the static TXOP limits are not sufficient enough to guarantee the quality of service (QoS) for IMM traffic flows. In order to address this issue, several existing works allocate the TXOP limits dynamically to ensure QoS for IMM traffics based on the current associated queue size and pre-setting threshold values. However, existing works do not take into account all the medium access control (MAC) overheads while estimating the current queue size which in turn is required for dynamic TXOP limits allocation. Hence, not considering MAC overhead appropriately results in inaccurate queue size estimation, thereby leading to inappropriate allocation of dynamic TXOP limits. In this article, an enhanced dynamic TXOP (EDTXOP) scheme is proposed that takes into account all the MAC overheads while estimating current queue size, thereby allocating appropriate dynamic TXOP limits within the pre-setting threshold values. In addition, the article presents an analytical estimation of the EDTXOP scheme to compute the dynamic TXOP limits for the current high priority traffic queues. Simulation results were carried out by varying traffic load in terms of packet size and packet arrival rate. The results show that the proposed EDTXOP scheme achieves the overall performance gains in the range of 4.41%-8.16%, 8.72%-11.15%, 14.43%-32% and 26.21%-50.85% for throughput, PDR, average ETE delay and average jitter, respectively when compared to the existing work. Hence, offering a better TXOP limit allocation solution than the rest.


Assuntos
Redes de Comunicação de Computadores , Tecnologia sem Fio , Algoritmos
5.
PLoS One ; 15(8): e0237154, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32797055

RESUMO

Data prioritization of heterogeneous data in wireless sensor networks gives meaning to mission-critical data that are time-sensitive as this may be a matter of life and death. However, the standard IEEE 802.15.4 does not consider the prioritization of data. Prioritization schemes proffered in the literature have not adequately addressed this issue as proposed schemes either uses a single or complex backoff algorithm to estimate backoff time-slots for prioritized data. Subsequently, the carrier sense multiple access with collision avoidance scheme exhibits an exponentially increasing range of backoff times. These approaches are not only inefficient but result in high latency and increased power consumption. In this article, the concept of class of service (CS) was adopted to prioritize heterogeneous data (real-time and non-real-time), resulting in an optimized prioritized backoff MAC scheme called Class of Service Traffic Priority-based Medium Access Control (CSTP-MAC). This scheme classifies data into high priority data (HPD) and low priority data (LPD) by computing backoff times with expressions peculiar to the data priority class. The improved scheme grants nodes the opportunity to access the shared medium in a timely and power-efficient manner. Benchmarked against contemporary schemes, CSTP-MAC attained a 99% packet delivery ratio with improved power saving capability, which translates to a longer operational lifetime.


Assuntos
Redes de Comunicação de Computadores , Processamento Eletrônico de Dados/métodos , Tecnologia sem Fio , Algoritmos , Modelos Teóricos , Rádio , Design de Software
6.
Recurso na Internet em Português | LIS - Localizador de Informação em Saúde | ID: lis-47723

RESUMO

Site do Hospital das clinicas com o objetivo de apresentar informações institucionais relacionadas às ações do Hospital sobre o combate à COVID-19. criou um site com varias informações sobre COVID-19, na pagina inicial você pode acessar, HC em numeros, perguntas frequentes, com vários temas apresentados, fato ou fake, humanização no HC orientações para profissionais de saúde, como cuidar e muitas outras informações atualizadas sobre o COVID-19


Assuntos
Betacoronavirus , Infecções por Coronavirus , Redes de Comunicação de Computadores
7.
Recurso na Internet em Inglês, Espanhol | LIS - Localizador de Informação em Saúde | ID: lis-47678

RESUMO

La Organización Panamericana de la Salud (OPS) está buscando movilizar más recursos para su trabajo en la emergencia de COVID-19 en las Américas, a través de un nuevo portal en línea donde se pueden hacer donaciones directamente para el Fondo de Respuesta a COVID-19 de la OPS.


Assuntos
Infecções por Coronavirus , América/epidemiologia , Redes de Comunicação de Computadores , Betacoronavirus
8.
Artigo em Inglês | MEDLINE | ID: mdl-32512935

RESUMO

Various simulation studies for wireless body area networks (WBANs) based on the IEEE 802.15.6 standard have recently been carried out. However, most of these studies have applied a simplified model without using any major components specific to IEEE 802.15.6, such as connection-oriented link allocations, inter-WBAN interference mitigation, or a two-hop star topology extension. Thus, such deficiencies can lead to an inaccurate performance analysis. To solve these problems, in this study, we conducted a comprehensive review of the major components of the IEEE 802.15.6 standard and herein present modeling strategies for implementing IEEE 802.15.6 MAC on an NS-3 simulator. In addition, we configured realistic network scenarios for a performance evaluation in terms of throughput, average delay, and power consumption. The simulation results prove that our simulation system provides acceptable levels of performance for various types of medical applications, and can support the latest research topics regarding the dynamic resource allocation, inter-WBAN interference mitigation, and intra-WBAN routing.


Assuntos
Redes de Comunicação de Computadores , Tecnologia sem Fio , Alocação de Recursos
9.
Artigo em Inglês | MEDLINE | ID: mdl-32532029

RESUMO

Amid the novel coronavirus pandemic, a variety of public health strategies have been implemented by governments worldwide. However, the fact that strict government mandates focus on physical distancing does not mean that social connectedness for voluntary risk communication among citizens should be sacrificed. Furthermore, we lack an understanding of citizens' behaviors regarding the voluntary adoption of public health measures and the control of mental wellbeing in the age of physical distancing. Key variables in the response to the global pandemic are the emergence of risk deliberation networks, voluntary compliance with government guidelines, and the restoration of citizens' subjective health. However, little is known about how citizens' health-related behaviors coevolve with social connections for sharing information and discussing urgent pandemic issues. The findings show that selection and social influence mechanisms coexist by affecting each citizen's health-related behaviors and community-led risk discourses in the face of the urgent health crisis.


Assuntos
Redes de Comunicação de Computadores/tendências , Infecções por Coronavirus/epidemiologia , Sistemas de Informação/tendências , Pandemias , Pneumonia Viral/epidemiologia , Comunicação , Participação da Comunidade , Infecções por Coronavirus/psicologia , Comportamentos Relacionados com a Saúde , Humanos , Comportamento de Busca de Informação , Pneumonia Viral/psicologia , Saúde Pública
10.
J Am Med Inform Assoc ; 27(6): 934-938, 2020 06 01.
Artigo em Inglês | MEDLINE | ID: covidwho-596564

RESUMO

The epidemic of coronavirus disease 2019 (COVID-19) broke out in Wuhan, China, in early 2020. In an effort to curb the spread of the epidemic, the government has requisitioned a variety of venues and plant buildings and built more than 20 cabin hospitals to receive patients with mild symptoms within 48 hours. Under this circumstance, we worked out a 5G all-wireless solution to divide the overall network system of the cabin hospital into multiple network units by function. While ensuring good signal coverage of the local unit, each network unit was independently connected to the host hospital's data center over a virtual private network (VPN) tunnel built on the 5G wireless network. Our successful experience with the application of this 5G + VPN all-wireless network system well points to the bright prospect of 5G wireless network. In addition, the 5G + VPN solution can also be used for multihospital network interconnection and rapid network recovery during the failure of wired network.


Assuntos
Betacoronavirus , Telefone Celular , Redes de Comunicação de Computadores , Infecções por Coronavirus/epidemiologia , Sistemas de Informação Hospitalar , Pneumonia Viral/epidemiologia , Telemedicina , Tecnologia sem Fio , China/epidemiologia , Registros Eletrônicos de Saúde , Epidemias/prevenção & controle , Humanos , Unidades Móveis de Saúde , Estudos de Casos Organizacionais , Pandemias
11.
J Am Med Inform Assoc ; 27(6): 934-938, 2020 06 01.
Artigo em Inglês | MEDLINE | ID: covidwho-342977

RESUMO

The epidemic of coronavirus disease 2019 (COVID-19) broke out in Wuhan, China, in early 2020. In an effort to curb the spread of the epidemic, the government has requisitioned a variety of venues and plant buildings and built more than 20 cabin hospitals to receive patients with mild symptoms within 48 hours. Under this circumstance, we worked out a 5G all-wireless solution to divide the overall network system of the cabin hospital into multiple network units by function. While ensuring good signal coverage of the local unit, each network unit was independently connected to the host hospital's data center over a virtual private network (VPN) tunnel built on the 5G wireless network. Our successful experience with the application of this 5G + VPN all-wireless network system well points to the bright prospect of 5G wireless network. In addition, the 5G + VPN solution can also be used for multihospital network interconnection and rapid network recovery during the failure of wired network.


Assuntos
Betacoronavirus , Telefone Celular , Redes de Comunicação de Computadores , Infecções por Coronavirus/epidemiologia , Sistemas de Informação Hospitalar , Pneumonia Viral/epidemiologia , Telemedicina , Tecnologia sem Fio , China/epidemiologia , Registros Eletrônicos de Saúde , Epidemias/prevenção & controle , Humanos , Unidades Móveis de Saúde , Estudos de Casos Organizacionais , Pandemias
13.
PLoS One ; 15(5): e0232574, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32392261

RESUMO

OpenFlow makes a network highly flexible and fast-evolving by separating control and data planes. The control plane thus becomes responsive to changes in topology and load balancing requirements. OpenFlow also offers a new approach to handle security threats accurately and responsively. Therefore, it is used as an innovative firewall that acts as a first-hop security to protect networks against malicious users. However, the firewall provided by OpenFlow suffers from Internet protocol version 6 (IPv6) fragmentation, which can be used to bypass the OpenFlow firewall. The OpenFlow firewall cannot identify the message payload unless the switch implements IPv6 fragment reassembly. This study tests the IPv6 fragmented packets that can evade the OpenFlow firewall, and proposes a new mechanism to guard against attacks carried out by malicious users to exploit IPv6 fragmentation loophole in OpenFlow networks. The proposed mechanism is evaluated in a simulated environment by using six scenarios, and results exhibit that the proposed mechanism effectively fixes the loophole and successfully prevents the abuse of IPv6 fragmentation in OpenFlow networks.


Assuntos
Segurança Computacional , Internet , Algoritmos , Redes de Comunicação de Computadores , Software
15.
PLoS One ; 15(5): e0232405, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32357170

RESUMO

Industrial networks are currently the only communication means designed for real-time systems used in industry. Networked control systems (NCS) are still important and commonly used type of such systems operating on shop floor. As a computerized node of NCS, a programmable logic controller (PLC) is usually used. In most cases, contemporary devices of such kind are equipped with more than one network interface of various types. Typically, only one interface is activated in NCS. Sometimes, the other is used for communication between NCS and supervisory systems. Occasionally, it is additionally involved in the data transmission in the factory IT systems. In general, however, using a single network interface is a more common solution. In this paper, the mutual utilization of more than one interface is discussed in order to back up the NCS network and to manage the node-related traffic within the scope of higher level services. The question of dependability of such a system from the electromagnetic compatibility point of view is discussed. The example is provided based on Profinet via wired and wireless connection.


Assuntos
Redes de Comunicação de Computadores , Tecnologia sem Fio , Automação/instrumentação , Redes de Comunicação de Computadores/instrumentação , Sistemas Computacionais , Instalação Elétrica , Fenômenos Eletromagnéticos , Indústrias/instrumentação , Tecnologia sem Fio/instrumentação
16.
J Am Med Inform Assoc ; 27(6): 934-938, 2020 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-32447373

RESUMO

The epidemic of coronavirus disease 2019 (COVID-19) broke out in Wuhan, China, in early 2020. In an effort to curb the spread of the epidemic, the government has requisitioned a variety of venues and plant buildings and built more than 20 cabin hospitals to receive patients with mild symptoms within 48 hours. Under this circumstance, we worked out a 5G all-wireless solution to divide the overall network system of the cabin hospital into multiple network units by function. While ensuring good signal coverage of the local unit, each network unit was independently connected to the host hospital's data center over a virtual private network (VPN) tunnel built on the 5G wireless network. Our successful experience with the application of this 5G + VPN all-wireless network system well points to the bright prospect of 5G wireless network. In addition, the 5G + VPN solution can also be used for multihospital network interconnection and rapid network recovery during the failure of wired network.


Assuntos
Betacoronavirus , Telefone Celular , Redes de Comunicação de Computadores , Infecções por Coronavirus/epidemiologia , Sistemas de Informação Hospitalar , Pneumonia Viral/epidemiologia , Telemedicina , Tecnologia sem Fio , China/epidemiologia , Registros Eletrônicos de Saúde , Epidemias/prevenção & controle , Humanos , Unidades Móveis de Saúde , Estudos de Casos Organizacionais , Pandemias
17.
PLoS One ; 15(4): e0231585, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32302326

RESUMO

The digital divide in Europe has not yet been bridged and thus more contributions towards understanding the factors affecting the different dimensions involved are required. This research offers some insights into the topic by analyzing the e-Government adoption or practical use of e-Government across Europe (26 EU countries). Based on the data provided by the statistical office of the European Union (Eurostat), we defined two indexes, the E-Government Use Index (EGUI) and an extreme version of it taking into account only null or complete use (EGUI+), and characterized the use/non use of e-Government tools using supervised learning procedures in a selection of countries with different e-Government adoption levels. These procedures achieved an average accuracy of 73% and determined the main factors related to the practical use of e-Government in each of the countries, e.g. the frequency of buying goods over the Internet or the education level. In addition, we compared the proposed indexes to other indexes measuring the level of e-readiness of a country such as the E-Government Development Index (EGDI) its Online Service Index (OSI) component, the Networked Readiness Index (NRI) and its Government usage component (GU). The ranking comparison found that EGUI+ is correlated with the four indexes mentioned at 0.05 significance level, as the majority of countries were ranked in similar positions. The outcomes contribute to gaining understanding about the factors influencing the use of e-Government in Europe and the different adoption levels.


Assuntos
Redes de Comunicação de Computadores , União Europeia/organização & administração , Governo , Tecnologia da Informação
18.
J Med Internet Res ; 22(4): e13188, 2020 04 21.
Artigo em Inglês | MEDLINE | ID: mdl-32314968

RESUMO

BACKGROUND: A large quantity of data is collected during the delivery of cancer care. However, once collected, these data are difficult for health professionals to access to support clinical decision making and performance review. There is a need for innovative tools that make clinical data more accessible to support health professionals in these activities. One approach for providing health professionals with access to clinical data is to create the infrastructure and interface for a clinical dashboard to make data accessible in a timely and relevant manner. OBJECTIVE: This study aimed to develop and evaluate 2 prototype dashboards for displaying data on the identification and management of lymphedema. METHODS: The study used a co-design framework to develop 2 prototype dashboards for use by health professionals delivering breast cancer care. The key feature of these dashboards was an approach for visualizing lymphedema patient cohort and individual patient data. This project began with 2 focus group sessions conducted with members of a breast cancer multidisciplinary team (n=33) and a breast cancer consumer (n=1) to establish clinically relevant and appropriate data for presentation and the visualization requirements for a dashboard. A series of fortnightly meetings over 6 months with an Advisory Committee (n=10) occurred to inform and refine the development of a static mock-up dashboard. This mock-up was then presented to representatives of the multidisciplinary team (n=3) to get preliminary feedback about the design and use of such dashboards. Feedback from these presentations was reviewed and used to inform the development of the interactive prototypes. A structured evaluation was conducted on the prototypes, using Think Aloud Protocol and semistructured interviews with representatives of the multidisciplinary team (n=5). RESULTS: Lymphedema was selected as a clinically relevant area for the prototype dashboards. A qualitative evaluation is reported for 5 health professionals. These participants were selected from 3 specialties: surgery (n=1), radiation oncology (n=2), and occupational therapy (n=2). Participants were able to complete the majority of tasks on the dashboard. Semistructured interview themes were categorized into engagement or enthusiasm for the dashboard, user experience, and data quality and completeness. CONCLUSIONS: Findings from this study constitute the first report of a co-design process for creating a lymphedema dashboard for breast cancer health professionals. Health professionals are interested in the use of data visualization tools to make routinely collected clinical data more accessible. To be used effectively, dashboards need to be reliable and sourced from accurate and comprehensive data sets. While the co-design process used to develop the visualization tool proved effective for designing an individual patient dashboard, the complexity and accessibility of the data required for a cohort dashboard remained a challenge.


Assuntos
Neoplasias da Mama/complicações , Redes de Comunicação de Computadores/normas , Apresentação de Dados/normas , Linfedema/etiologia , Neoplasias da Mama/patologia , Feminino , Grupos Focais , Humanos , Projetos de Pesquisa
19.
BMC Health Serv Res ; 20(1): 163, 2020 Mar 04.
Artigo em Inglês | MEDLINE | ID: mdl-32131815

RESUMO

BACKGROUND: Traditional nurse call systems used in residential care facilities rely on patients to summon assistance for routine or emergency needs. Wireless nurse call systems (WNCS) offer new affordances for persons unable to actively or consciously engage with the system, allowing detection of hazardous situations, prevention and timely treatment, as well as enhanced nurse workflows. This study aimed to explore facilitators and barriers of implementation of WNCSs in residential care facilities. METHODS: The study had a cross-sectional descriptive design. We collected data from care providers (n = 98) based on the Measurement Instrument for Determinants of Innovation (MIDI) framework in five Norwegian residential care facilities during the first year of WNCS implementation. The self-reporting MIDI questionnaire was adapted to the contexts. Descriptive statistics were used to explore participant characteristics and MIDI item and determinant scores. MIDI items to which ≥20% of participants disagreed/totally disagreed were regarded as barriers and items to which ≥80% of participants agreed/totally agreed were regarded as facilitators for implementation. RESULTS: More facilitators (n = 22) than barriers (n = 6) were identified. The greatest facilitators, reported by 98% of the care providers, were the expected outcomes: the importance and probability of achieving prompt call responses and increased safety, and the normative belief of unit managers. During the implementation process, 87% became familiar with the systems, and 86 and 90%, respectively regarded themselves and their colleagues as competent users of the WNCS. The most salient barriers, reported by 37%, were their lack of prior knowledge and that they found the WNCS difficult to learn. No features of the technology were identified as barriers. CONCLUSIONS: Overall, the care providers gave a positive evaluation of the WNCS implementation. The barriers to implementation were addressed by training and practicing technological skills, facilitated by the influence and support by the manager and the colleagues within the residential care unit. WNCSs offer a range of advanced applications and services, and further research is needed as more WNCS functionalities are implemented into residential care services.


Assuntos
Moradias Assistidas , Atitude do Pessoal de Saúde , Redes de Comunicação de Computadores/organização & administração , Recursos Humanos de Enfermagem/psicologia , Tecnologia sem Fio/organização & administração , Adulto , Idoso , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Noruega , Recursos Humanos de Enfermagem/estatística & dados numéricos , Inquéritos e Questionários , Adulto Jovem
20.
PLoS One ; 15(3): e0228844, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32155156

RESUMO

The data layer devices in the Software Defined Network (SDN) play an important role in packet forwarding. However, whether the forwarding task can be efficiently completed by the node has not attracted enough attention. A method called TrustBlock is proposed in this paper, which introduces trust as a security attribute in SDN routing planning. Besides, in order to enhance the integrity and controllability of trust evaluation, the double-layer blockchain architecture is established. In the first layer, the behavior data of the node is recorded, and then the trust calculation is performed in the second layer. In the evaluation model, nodes' trust is calculated from three aspects: direct trust, indirect trust and historical trust. Firstly, from the perspective of security, blockchain is used to achieve identity authentication of nodes, after that, from the perspective of reliability, the forwarding status is used to calculate the trust value. Secondly, consensus algorithm is used to filter malicious recommendation trust value and prevent colluding attacks. Finally, the adaptive historical trust weight is designed to prevent the periodic attack. In this paper, the entropy method is used to determine the weight of each evaluation attribute, which can avoid the problem that the subjective judgment method is not adaptable to the weight setting. Simulation results show that the detection rate of the TrustBlock is up to 98.89%, which means this model can effectively identify the abnormal nodes in SDN. Moreover, it is attractive in terms of integrity and controllability.


Assuntos
Redes de Comunicação de Computadores/instrumentação , Tecnologia de Sensoriamento Remoto/métodos , Algoritmos , Blockchain , Modelos Teóricos , Tecnologia de Sensoriamento Remoto/instrumentação , Projetos de Pesquisa , Software
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