RESUMO
The Internet of Things (IoT) will bring about the next industrial revolution in Industry 4.0. The communication aspect of IoT devices is one of the most critical factors in choosing the device that is suitable for use. Thus far, the IoT physical layer communication challenges have been met with various communications protocols that provide varying strengths and weaknesses. This paper summarizes the network architectures of some of the most popular IoT wireless communications protocols. It also presents a comparative analysis of some of the critical features, including power consumption, coverage, data rate, security, cost, and quality of service (QoS). This comparative study shows that low-power wide area network (LPWAN)-based IoT protocols (LoRa, Sigfox, NB-IoT, LTE-M) are more suitable for future industrial applications because of their energy efficiency, high coverage, and cost efficiency. In addition, the study also presents an Industrial Internet of Things (IIoT) application perspective on the suitability of LPWAN protocols in a particular scenario and addresses some open issues that need to be researched. Thus, this study can assist in deciding the most suitable IoT communication protocol for an industrial and production field.
RESUMO
BACKGROUND: A proper rehabilitation program may prevent post-stroke neurological, structural, and functional disabilities. We aimed to evaluate the efficacy of caregiver training in the rehabilitation of stroke survivors and compare rehabilitation interventions done by the therapist. METHODS: This quasi-experimental study was conducted among 67 stroke survivors divided into group A (home-based exercise by family caregivers; n=33) and group B (hospital-based supervised exercise by a physiotherapist; n=34). Family caregivers were trained according to "The London Stroke Carers Training Course." The functional independence measure (FIM) evaluated all patients after three months of physiotherapy. Results: The mean age of the participants in group A and group B were 56.85 ± 11.49 and 58.65 ± 16.92 years, respectively, where most of the patients in both groups were male. In group A, 17 (51.5%) participants had left-sided involvement, while in group B, 17 (50.0%) participants had left-sided involvement. There was no significant statistical difference in FIM between groups A and B at baseline (p=0.532). At three months, the mean FIM of the participants in group A (98.54 ± 11.85) was significantly higher than in group B (89.85 ± 8.15) (p=0.001). A quasi-significant difference was observed between the right (18.41 ± 9.37) and the left (23.42 ± 11.68) hemisphere involvement regarding mean improvement of FIM (p=0.057). CONCLUSION: Therapeutic approach provided by trained caregivers was found to be more effective and efficient than that done by a physiotherapist.
RESUMO
PURPOSE: The purpose of this study is to report the prevalence of having a dental visit and/or a topical fluoride treatment at the dental visit from birth to age 36 months from an observational, longitudinal study of a cohort of children followed since birth. METHODS: Multiple questionnaires were sent to the families of children enrolled in a study of fluoride ingestion to ask parents if their child had had a dental (or dental hygiene) appointment and/or a fluoride treatment during the time interval since the previous mailed survey. Data were analyzed to determine the percentages of children who had at least one dental visit or at least one fluoride treatment by one, two or three years of age. RESULTS: Three hundred and forty parents completed all eleven questionnaires during the 36-month study period. Of these, 2% reported having taken their child for a dental visit by one year of age, 11% by two years of age and 31% by three years of age. Of those with a visit by three years of age, 19% received at least one fluoride treatment. CONCLUSIONS: Despite recommendations for early dental visits, only 31% of the children in this cohort had been seen by a dentist by the time they reached their third birthday and 19% of these had received a professional fluoride treatment.