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1.
J. Health Biol. Sci. (Online) ; 10(1): 1-5, 01/jan./2022. ilus
Article in English | LILACS | ID: biblio-1370898

ABSTRACT

Introduction: The use of computers, tablets, and cell phones with the Internet by people with quadriplegia from spinal cord injuries is much lower when compared to the general population. The quality of life of these people can be substantially improved through access to these technologies, which would allow a quadriplegic to take advantage of the rapid evolution of information and communication. Many of these individuals have the function of preserved neck and mouth muscles, and it is possible to manipulate intraoral devices as an adaptation tool. Case Report: We report an intraoral device installation in a patient with quadriplegia, a victim of a firearm accident, who had a great desire to reuse the tablet for internet access. A device made of acrylic resin, similar to a myorelaxant plate, was designed to allow the use of a computer that was comfortable and at the same time, the patient could talk and not harm the dental structures. The person responsible agreed to participate in the research and signed the consent form. In addition, the work was submitted to an ethics committee. Considerations: The ideal intra-oral device for patient rehabilitation should be inexpensive, easy to adapt and promote muscle relaxation besides allowing the patient to expand their abilities and digitally increase their autonomy for society.


Introdução: O uso de computadores, tablets e celulares com internet por pessoas com tetraplegia por lesão medular é muito menor quando comparado à população geral. A qualidade de vida dessas pessoas pode ser, substancialmente, melhorada por meio do acesso a essas tecnologias, o que permitiria aos tetraplégicos aproveitar a rápida evolução da informação e da comunicação. Muitos desses indivíduos têm a função de músculos cervicais e bucais preservados, sendo possível a manipulação de dispositivos intraorais como ferramenta de adaptação. Relato de Caso: Relatamos a instalação de um dispositivo intraoral em um paciente com tetraplegia, vítima de acidente com arma de fogo, que tinha grande desejo de reutilizar o tablet para acesso à internet. Um dispositivo feito de resina acrílica, semelhante a uma placa miorrelaxante, foi projetado para permitir o uso de um computador que fosse confortável e, ao mesmo tempo, o paciente pudesse falar e não prejudicar as estruturas dentárias. O responsável concordou em participar da pesquisa e assinou o termo de consentimento. Além disso, o trabalho foi submetido a um comitê de ética. Considerações: O dispositivo intraoral ideal para a reabilitação do paciente deve ser barato, de fácil adaptação e promover o relaxamento muscular, além de permitir que o paciente amplie suas habilidades e aumente sua autonomia pessoal, digitalmente para a sociedade.


Subject(s)
Digital Inclusion , Social Inclusion , Quadriplegia , Computers , Disabled Persons , Communication , Adaptation , Personal Autonomy
2.
Rev. bras. oftalmol ; 81: e0007, 2022. tab
Article in Portuguese | LILACS | ID: biblio-1360922

ABSTRACT

RESUMO Objetivo: Avaliar sintomas astenópicos e fatores sociodemográficos, hábitos comportamentais e clínicos nos docentes universitários durante a pandemia da COVID-19. Métodos: Trata-se de estudo transversal que avaliou a ocorrência de astenopia em 104 docentes. Questionários de sintomatologia visual validados foram adaptados para a coleta de dados. Houve comparação dos docentes quanto à ocorrência ou não de sintomas astenópicos, bem como foi aplicada regressão logística binária, para aferir a associação com variáveis independentes (p<0,05). Resultados: Houve maior aparecimento de sintomas astenópicos durante o período pandêmico, em que o tempo de exposição a telas parece ter sido o fator mais determinante. Além disso, os indivíduos com tempo de tela superior a 5 horas diárias, que faziam uso de telas para o lazer e usavam colírio/lubrificantes apresentaram significativamente maior chance de estar no grupo com sintomas astenópicos. Conclusão: Foi identificada associação significativa entre a ocorrência de sintomas astenópicos e o uso de telas durante o período pandêmico, principalmente nos grupos com maior duração do tempo de tela. O estudo chama atenção para a saúde ocular de docentes universitários em ensino remoto, além de suscitar novos estudos para investigação desse quadro em distintos ambientes escolares.


ABSTRACT Objective: To assess asthenopic symptoms and sociodemographic factors, behavioral and clinical aspects in college lecturers during the COVID-19 pandemic. Methods: This is a cross-sectional study evaluating asthenopia in 104 lecturers. Some validated visual symptom questionnaires were adapted for data collection. Lecturers were compared regarding the occurrence or not of asthenopic symptoms, and binary logistic regression was applied to measure the association with independent variables (p<0.05). Results: Asthenopic symptoms occurred more often during the pandemic, when exposure to screens was a determinant factor. The individuals with screen time longer than five hours a day, who used screens for leisure, and who used eye drops/lubricants were significantly more likely to be in the group with asthenopic symptoms. Conclusion: A significant association was identified in occurrence of asthenopic symptoms and screen use during the pandemic period, especially in groups with longer screen time. The study draws attention to the eye health of college lecturers in distance learning, and the need for further research on this situation in different school environments.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Asthenopia/epidemiology , Education, Distance/methods , Faculty , Universities , Computers , Xerophthalmia/epidemiology , Cross-Sectional Studies , Surveys and Questionnaires , Retrospective Studies , Internet , Diplopia/epidemiology , Eye Manifestations , Pandemics , Occupational Stress , COVID-19
3.
J. Hum. Growth Dev. (Impr.) ; 31(1): 66-75, Jan.-Apr. 2021. graf, tab
Article in English | LILACS, INDEXPSI | ID: biblio-1250154

ABSTRACT

INTRODUCTION: In studies directed to children and adolescents, the sedentary behavior has been usually represented by exposure to screen, which comprise the total or separate measured time exposed to television, videogame, tablets, mobile devices, and computer. OBJECTIVE: To analyze the prevalence and factors associated with screen time in children and adolescents. METHODS: A cross-sectional school-based study was carried out with 1,471 students from Elementary School, aged between 7 to 18 years (51.3% male), enrolled at public schools (55.6%) in Porto Velho, Rondônia (RO) state, Brazil. Excess screen time was defined as watching television, using the computer, and playing video games for more than two hours per day. Poisson regression was used to obtain crude and adjusted prevalence ratios and their respective 95% CI. RESULTS: Overall prevalence of screen time exposure over two hours per day was 65.9%. After adjustments, risk of screen time exposure was higher in males, PR = 1.51 (95% CI: 1.08 - 1.92), under or equal to 14 years old, PR = 1.69 (95% CI: 1.48 - 1.92), in the 5th grade, PR = 1.41 (95% CI: 1.02 - 1.89), in the 6th grade, PR = 1.44 (95% CI: 1.06 - 1.97) and in the 7th grade, PR = 1.52 (95% CI: 1.09 - 2.13), attending two weekly PE classes or fewer, PR = 1.25 (95% CI: 1.07 - 1.53) ), consuming more than 3 daily meals, PR = 2.69 (95% CI: 2.14 - 3.37) and overweight, PR = 1.51 (95% CI: 1.13 - 2.03). CONCLUSION: The findings showed that the exposure equal to or more than two hours of daily screen time was high. The students more exposed to this outcome had the next characteristics: male sex, age less than or equal to 14 years, from the fifth, sixth, and seventh grade of elementary education, practice physical education classes less than or equal to two hours per week, consume more than three meals daily and have excess body fat (G%).


INTRODUÇÃO: Em estudos direcionados a crianças e adolescentes, o comportamento sedentário tem sido usualmente representado pela exposição aos comportamentos de tela, que compreendem as medidas (unificadas ou distintas) do tempo de televisão, videogame, tablets, aparelhos celulares e computador. OBJETIVO: Investigar a prevalência e os fatores associados ao tempo de tela em crianças e adolescentes. MÉTODO: Estudo transversal de base escolar, com 1471 escolares de 9 a 18 anos, sendo 51,3% do sexo masculino pertencentes às escolas públicas (55,6%) do ensino fundamental de Porto Velho, Rondônia. O tempo excessivo de tela foi definido como assistir televisão, usar o computador e jogar videogames por mais de duas horas diárias. Análise utilizada foi regressão de Poisson para obtenção das razões de prevalências brutas e ajustadas e seus respectivos IC95%. RESULTADOS: A prevalência geral de exposição de tempo de tela maior que duas horas diárias foi de 65,9%. Após ajustes, o risco à exposição de tempo de tela foi maior no sexo masculino RP = 1,51 (IC95%: 1,08 - 1,92), idade menor ou igual a 14 anos RP = 1,69 (IC95%: 1,48 - 1,92), graus de ensino 5ª ano RP=1,41 (IC95%: 1,02 - 1,89), 6ª ano RP=1,44 (IC95%: 1,06 - 1,97) e 7ª ano RP = 1,52 (IC95%: 1,09 - 2,13), frequentar as aulas de educação física menos ou igual a duas aulas semanais RP = 1,25 (IC95%:1,07 - 1,53), consumir refeições diárias mais de três por dia RP = 2,69 (IC95%:2,14 - 3,37) e ter excesso de gordura RP = 1,51 (IC95%: 1,13 - 2,03. CONCLUSÃO: Os resultados mostraram que a exposição igual ou superior a duas horas de tela diária era alta. Os estudantes mais expostos a este desfecho tiveram as seguintes características: sexo masculino, idade menor ou igual a 14 anos, de quinta, sexta e sétima série do ensino fundamental, praticar aulas de educação física menor ou igual a duas horas semanais, consumir mais de três refeições diárias e estar com excesso de gordura corporal (G%).


Subject(s)
Physical Education and Training , Television , Computers , Child , Adolescent , Video Games , Computers, Handheld , Overweight , Sedentary Behavior , Screen Time
4.
Dement. neuropsychol ; 15(1): 28-40, Jan.-Mar. 2021. tab, graf
Article in English | LILACS | ID: biblio-1286181

ABSTRACT

ABSTRACT. Many studies have found that non-pharmacological interventions, such as cognitive stimulation (CS), can benefit people with dementia (PWD) or with mild cognitive impairment (MCI). The use of the computerized cognitive stimulation (CCS) had proven to be an ally to those who want to detect and mitigate this disease. Objective: The purpose of this paper was to analyze the scientific production in CCS in PWD or with MCI in journals indexed in Clarivate Analytics' Web of Science and Elsevier's Scopus since 2000. Methods: Data collected from Web of Science and Scopus during 2000-2019. Results: The data show that dementia research is exponentially developing following the evolution of widespread use of computer science. As such, this article was of enormous importance doing a bibliometric analysis of what has been done in the area since the beginning of this century. The search terms identified 61 papers related to the use of computers applied to CS in PWD or MCI, and the International Journal of Geriatric Psychiatry and Journal of Alzheimer's Disease had the largest number of publications. The most cited article was the Faucounau et colleagues. Major research' countries are United Kingdom, Spain and United States. Conclusions: The findings in these papers were analysed to find recommendations for future work in this area. The CCS has been increasingly used as an intervention tool for PWD or MCI, and there still seems to be a possibility for evolution in good quality publications.


RESUMO. Muitos estudos têm demonstrado que as intervenções não farmacológicas, como a estimulação cognitiva (EC), podem beneficiar pessoas com demência (PCD) ou com declínio cognitivo ligeiro (DCL). O uso da estimulação cognitiva computadorizada (ECC) tem mostrado ser um meio para detetar e mitigar essa doença. Objetivo: O objetivo do presente artigo foi analisar a produção científica em ECC em PCD ou com DCL publicada em revistas indexadas na Web of Science da Clarivate Analytics e na Scopus da Elsevier desde 2000. Métodos: Os dados foram coletados na Web of Science e Scopus relativamente aos anos 2000-2019. Resultados: Os dados mostram que a pesquisa em demência está se desenvolvendo exponencialmente, acompanhando a evolução do uso generalizado da ciência da computação. Dessa forma, o estudo foi de enorme importância para uma análise bibliométrica do que tem sido feito na área desde o início deste século. Os termos de pesquisa identificaram 61 artigos relacionados ao uso de computadores aplicados à EC em PCD ou DCL, e ambos os periódicos International Journal of Geriatric Psychiatry e Journal of Alzheimer's Disease tiveram o maior número de publicações. O artigo mais citado foi o de Faucounau et al. Os principais países de pesquisa foram Reino Unido, Espanha e Estados Unidos. Conclusões: Os resultados desses artigos foram analisados de forma a possibilitar encontrar recomendações para trabalhos futuros nessa área. A ECC tem sido cada vez mais utilizada como ferramenta nas intervenções para PCD e DCL, e ainda parece haver possibilidade de evolução em publicações de boa qualidade.


Subject(s)
Humans , Dementia , Computers , Bibliometrics , Deep Brain Stimulation , Data Analysis
5.
Rev. cub. inf. cienc. salud ; 32(1): e1648, tab, fig
Article in Spanish | LILACS, CUMED | ID: biblio-1280206

ABSTRACT

La elaboración y la gestión de las referencias bibliográficas en el proceso de investigación es una tarea de alta importancia. Esta actividad continúa siendo una dificultad para muchos investigadores, a pesar del desarrollo informático vinculado a ella. El acceso y el uso de la información mediante Internet es una constante premisa en la investigación actual que requiere, con inmediatez para los investigadores, del avance de sus habilidades para la gestión bibliográfica, acorde con los nuevos adelantos técnicos. Los gestores bibliográficos son herramientas informáticas que ofrecen servicios automatizados para la organización bibliográfica, las cuales son conocidas a partir de otras publicaciones. Uno de los gestores más difundidos y utilizados es el EndNote, que se retomó nuevamente en esta investigación con una población de 23 doctorandos de la Universidad de las Ciencias Informáticas (UCI), con el objetivo de revelar los resultados obtenidos en la implementación de un entrenamiento de los doctorandos para el desarrollo de las habilidades de nivel avanzado. Como resultado se propusieron tres niveles de acciones para el dominio de esta herramienta que respondían al nivel de complejidad de las funcionalidades del software: básico, avanzado y experto. En el grupo de doctorandos del grupo UCI se evidencia un saber y un saber hacer en las acciones y operaciones del EndNote, superiores al diagnóstico inicial, que evidencia el desarrollo de un nivel básico a un nivel avanzado(AU)


Development and management of bibliographic references is a very important task in the research process. This activity continues to be a challenge for many researchers, despite the progress achieved in the field in terms of computer support. Access to and use of Internet-based information is a permanent premise in current research requiring immediacy in the enhancement of researchers' reference management skills, in keeping with recent technical advances. Reference managers are computer tools offering automated services for the bibliographic organization of references obtained from other publications. One of the most widely disseminated and commonly used managers is EndNote, which was revisited in the present study with a population of 23 aspiring PhDs from the Information Sciences University (UCI), with the purpose of revealing the results obtained by the implementation of a training program for the development of advanced skills intended for aspiring PhDs. As a result, three levels of actions aimed at the command of this tool were proposed: basic, advanced and expert, reflecting the degree of complexity exhibited by the functions performed by the software. The aspiring PhDs in the UCI group showed better knowledge and know-how about EndNote actions and operations than in their initial diagnosis. This was evidence of their progress from a basic to an advanced level(AU)


Subject(s)
Humans , Organization and Administration , Computers , Information Science , Education
6.
Article in Chinese | WPRIM | ID: wpr-922046

ABSTRACT

In order to reduce the working intensity of medical staff in inspecting patients during traditional infusion, a remote monitoring system for intravenous infusion is designed for solving the problem of delay in handling treatment during infusion process and to reduce the incidence of medical accidents. The system uses Visual Basic.NET language to develop the upper computer platform for infusion monitoring. It uses the Arduino control board and infrared photoelectric sensor to form a monitoring device to detect relevant information. At the same time, it uses Zigbee wireless sensing technology to transmit data and upload it to the software platform. The results show that the system can receive data from multiple monitoring terminal devices in the upper computer platform application interface at the same time. It can display the data in the nurse station in a graphical way, and perform alarm warning and information storage during the infusion process. The infusion monitoring system can observe the monitoring situation in real time, reduce the workload of medical staff, and further improve the operating efficiency and safety of the hospital.


Subject(s)
Computers , Electrocardiography , Equipment Design , Humans , Monitoring, Physiologic , Wireless Technology
7.
Article in English | WPRIM | ID: wpr-921871

ABSTRACT

Objective We developed a universal lesion detector (ULDor) which showed good performance in in-lab experiments. The study aims to evaluate the performance and its ability to generalize in clinical setting via both external and internal validation. Methods The ULDor system consists of a convolutional neural network (CNN) trained on around 80K lesion annotations from about 12K CT studies in the DeepLesion dataset and 5 other public organ-specific datasets. During the validation process, the test sets include two parts: the external validation dataset which was comprised of 164 sets of non-contrasted chest and upper abdomen CT scans from a comprehensive hospital, and the internal validation dataset which was comprised of 187 sets of low-dose helical CT scans from the National Lung Screening Trial (NLST). We ran the model on the two test sets to output lesion detection. Three board-certified radiologists read the CT scans and verified the detection results of ULDor. We used positive predictive value (PPV) and sensitivity to evaluate the performance of the model in detecting space-occupying lesions at all extra-pulmonary organs visualized on CT images, including liver, kidney, pancreas, adrenal, spleen, esophagus, thyroid, lymph nodes, body wall, thoracic spine,


Subject(s)
Computer Simulation , Computers , Neural Networks, Computer , Tomography, X-Ray Computed
8.
Journal of Biomedical Engineering ; (6): 1054-1061, 2021.
Article in Chinese | WPRIM | ID: wpr-921845

ABSTRACT

Otitis media is one of the common ear diseases, and its accurate diagnosis can prevent the deterioration of conductive hearing loss and avoid the overuse of antibiotics. At present, the diagnosis of otitis media mainly relies on the doctor's visual inspection based on the images fed back by the otoscope equipment. Due to the quality of otoscope equipment pictures and the doctor's diagnosis experience, this subjective examination has a relatively high rate of misdiagnosis. In response to this problem, this paper proposes the use of faster region convolutional neural networks to analyze clinically collected digital otoscope pictures. First, through image data enhancement and preprocessing, the number of samples in the clinical otoscope dataset was expanded. Then, according to the characteristics of the otoscope picture, the convolutional neural network was selected for feature extraction, and the feature pyramid network was added for multi-scale feature extraction to enhance the detection ability. Finally, a faster region convolutional neural network with anchor size optimization and hyperparameter adjustment was used for identification, and the effectiveness of the method was tested through a randomly selected test set. The results showed that the overall recognition accuracy of otoscope pictures in the test samples reached 91.43%. The above studies show that the proposed method effectively improves the accuracy of otoscope picture classification, and is expected to assist clinical diagnosis.


Subject(s)
Computers , Diagnosis, Computer-Assisted , Humans , Neural Networks, Computer , Otitis Media/diagnosis
9.
Chinese Medical Journal ; (24): 2597-2602, 2021.
Article in English | WPRIM | ID: wpr-921209

ABSTRACT

BACKGROUND@#Computed tomography (CT) and magnetic resonance imaging (MRI) data can be fused to identify the tumor boundaries. This enables surgeons to set close but tumor-free surgical margins and excise the tumor more precisely. This study aimed to report our experience in performing computer navigation-aided joint-preserving resection and custom-made endoprosthesis reconstruction to treat bone sarcoma in the diaphysis and metaphysis of the femur and tibia.@*METHODS@#Between September 2008 and December 2015, 24 patients with bone sarcomas underwent surgical resection and joint-sparing reconstruction under image-guided computer navigation. The cohort comprised 16 males and eight females with a median age of 19.5 years (range: 12-48 years). The tumor location was the femoral diaphysis in three patients, distal femur in 19, and proximal tibia in two. The tumors were osteosarcoma (n = 15), chondrosarcoma (n = 3), Ewing sarcoma (n = 3), and other sarcomas (n = 3). We created a pre-operative plan for each patient using navigation system software and performed navigation-aided resection before reconstructing the defect with a custom-made prosthesis with extracortical plate fixation.@*RESULTS@#Pathological examination verified that all resected specimens had appropriate surgical margins. The median distance from the tumor resection margin to the joint was 30 mm (range: 13-80 mm). The median follow-up duration was 62.5 months (range: 24-134 months). Of the 24 patients, 21 remain disease free, one is alive with disease, and two died of the disease. One patient developed local recurrence. Complications requiring additional surgical procedures occurred in six patients, including one with wound hematoma, one with delayed wound healing, one with superficial infection, one with deep infection, and two with mechanical failure of the prosthesis. The mean Musculoskeletal Tumor Society score at the final follow-up was 91% (range: 80%-100%). The 5- and 10-year implant survival rates were 91.3% and 79.9%, respectively.@*CONCLUSIONS@#Computer navigation-aided joint-preserving resection and custom-made endoprosthesis reconstruction with extracortical plate fixation is a reliable surgical treatment option for bone sarcoma in the diaphysis and metaphysis of the femur and tibia.


Subject(s)
Adolescent , Adult , Child , Computers , Female , Humans , Male , Middle Aged , Neoplasm Recurrence, Local , Osteosarcoma , Prostheses and Implants , Sarcoma , Young Adult
10.
Article in Chinese | WPRIM | ID: wpr-888204

ABSTRACT

Brain-computer interface (BCI) has great potential to replace lost upper limb function. Thus, there has been great interest in the development of BCI-controlled robotic arm. However, few studies have attempted to use noninvasive electroencephalography (EEG)-based BCI to achieve high-level control of a robotic arm. In this paper, a high-level control architecture combining augmented reality (AR) BCI and computer vision was designed to control a robotic arm for performing a pick and place task. A steady-state visual evoked potential (SSVEP)-based BCI paradigm was adopted to realize the BCI system. Microsoft's HoloLens was used to build an AR environment and served as the visual stimulator for eliciting SSVEPs. The proposed AR-BCI was used to select the objects that need to be operated by the robotic arm. The computer vision was responsible for providing the location, color and shape information of the objects. According to the outputs of the AR-BCI and computer vision, the robotic arm could autonomously pick the object and place it to specific location. Online results of 11 healthy subjects showed that the average classification accuracy of the proposed system was 91.41%. These results verified the feasibility of combing AR, BCI and computer vision to control a robotic arm, and are expected to provide new ideas for innovative robotic arm control approaches.


Subject(s)
Augmented Reality , Brain-Computer Interfaces , Computers , Electroencephalography , Evoked Potentials, Visual , Humans , Photic Stimulation , Robotic Surgical Procedures
11.
Acta Medica Philippina ; : 333-340, 2021.
Article in English | WPRIM | ID: wpr-886407

ABSTRACT

@#OBJECTIVE: The main objective of this study was to evaluate clinical and radiographic outcomes of computer minimally invasive transforaminal lumbar interbody fusion (CNMIS TLIF). METHODS: Blood loss, operating time, complications, and hospital stay were identified through chart review. Numeric rating scale (NRS) scores for pain were taken during recent follow-ups, and these were compared to the pre-operative scores. Three different examiners assessed the pre-operative lumbosacral spine radiographs. At a 2-years follow-up, the patients were evaluated with NRS and the radiographs reassessed by three other examiners. RESULTS: Seventy-four patients with a mean age of 54 years underwent CNMIS TLIF. Average blood loss was 300 mL, operative time was 4.5 hours, and the average length of hospital stay was 8.5 days. A total of four complications were noted in our study. There was an improvement of mean local lordosis and regional lordosis. The paired-sample t-test showed that the anterior, middle, and posterior disc heights at the cage level were significantly increased compared to the pre-operative values. CONCLUSION: CNMIS TLIF is a safe and efficient method to achieve spinal fusion. There was a significant improvement in clinical outcomes in terms of pain relief. Radiologic parameters such as local lordosis, regional lordosis, and anterior, middle, and posterior disc heights showed significant improvements at 2-years follow-up.


Subject(s)
Spinal Fusion , Minimally Invasive Surgical Procedures , Computers
12.
Article in Chinese | WPRIM | ID: wpr-880443

ABSTRACT

Aiming at the low efficiency and low quality detection level of the manual infusion set, a gas detection system for infusion set based on STM32 single-chip microcomputer was designed. The detection system includes hardware system design and software system design. The hardware system is based on the STM32F103 single-chip microcomputer. It mainly designs the gas pressure sensor acquisition circuit and the multi-way solenoid valve control circuit. The software system uses a C ++ real-time operating system to ensure system monitoring's real-time performance and validity. Test data is transmitted to the upper computer and displayed via USB serial communication. The experiment proves that the infusion set gas detection system can perform gas detection on the infusion set. The system has the characteristics of stability and high accuracy. The relative error of the experimental measurement is within ±5%, and the detection efficiency is better than manual detection.


Subject(s)
Computers , Equipment Design , Microcomputers , Software
13.
Article in Chinese | WPRIM | ID: wpr-880437

ABSTRACT

Aiming at the current situation of high cost, huge volume, complex operation and difficulty in real application of pulse analyzer, this study designs and implements a portable pulse detection system based on IoT. The design utilizes Raspberry Pi 3B+, STM32 series MCU and cloud server to collect, store, display and recognize pulse signals at CUN, GUAN and CHI. The system is small in size and low in cost, which can be connected with cloud server through network to make full use of resources. The experimental results show that the recognition accuracy of the main feature points of the pulse signal by the portable pulse analyzer is higher than 97%, which has a broad prospect of development and application.


Subject(s)
Computers , Heart Rate
14.
Article in Chinese | WPRIM | ID: wpr-879246

ABSTRACT

Both feature representation and classifier performance are important factors that determine the performance of computer-aided diagnosis (CAD) systems. In order to improve the performance of ultrasound-based CAD for breast cancers, a novel multiple empirical kernel mapping (MEKM) exclusivity regularized machine (ERM) ensemble classifier algorithm based on self-paced learning (SPL) is proposed, which simultaneously promotes the performance of both feature representation and the classifier. The proposed algorithm first generates multiple groups of features by MEKM to enhance the ability of feature representation, which also work as the kernel transform in multiple support vector machines embedded in ERM. The SPL strategy is then adopted to adaptively select samples from easy to hard so as to gradually train the ERM classifier model with improved performance. This algorithm is verified on a B-mode ultrasound dataset and an elastography ultrasound dataset, respectively. The results show that the classification accuracy, sensitivity and specificity on B-mode ultrasound are (86.36±6.45)%, (88.15±7.12)%, and (84.52±9.38)%, respectively, and the classification accuracy, sensitivity and specificity on elastography ultrasound are (85.97±3.75)%, (85.93±6.09)%, and (86.03±5.88)%, respectively. It indicates that the proposed algorithm can effectively improve the performance of ultrasound-based CAD for breast cancers with the potential for application.


Subject(s)
Algorithms , Breast Neoplasms/diagnostic imaging , Computers , Diagnosis, Computer-Assisted , Humans , Support Vector Machine , Ultrasonography
15.
Article in Chinese | WPRIM | ID: wpr-888636

ABSTRACT

Thermal ablation surgery can effectively eliminate bone tumors in the spine and meanwhile reduce damage to the human body. To realize the computer modeling and simulation of spine thermal ablation surgery, it is necessary to ensure the accuracy of both spine modeling and simulation temperature. This review summarizes the research progress of this field and analyzes the prospects from two aspects: computer modeling based on spine segmentation from medical images and simulation calculation of temperature field in ablation surgery. The research on spine segmentation has made great progress, but there are still some problems that prevent it from being applied in clinical simulation. Related research has been trying to solve the problems. For the ablation surgery of the spine, some researchers have tried ablation simulation and obtained simulation results that are relatively consistent with the actual temperature value.


Subject(s)
Catheter Ablation , Computer Simulation , Computers , Humans , Hyperthermia, Induced , Spine/surgery
16.
Rev. méd. Minas Gerais ; 31: 31113, 2021.
Article in Portuguese | LILACS | ID: biblio-1354583

ABSTRACT

Introdução: "Tecnologia Educacional" é o conjunto de procedimentos que visa criar um diálogo entre ciência e o processo de ensino-aprendizagem a partir da utilização de tecnologias digitais de informação e comunicação (TDICs) com acesso à internet e das ferramentas digitais para aprendizagem oferecidos por meio da mesma. O presente estudo tem como objetivo investigar quais equipamentos eletrônicos e que tipos de ferramentas digitais são mais utilizadas pelos estudantes da graduação médica no Brasil. Método: Pesquisa transversal, descritiva e quantitativa, com aplicação de questionários pela internet a 1.215 acadêmicos do primeiro ao último período de cursos de medicina das cinco regiões geográficas brasileiras. Resultados: Do total de entrevistados, 94,6% e 98,9% responderam ter acesso a infocentro na instituição de ensino e dispor de internet na própria residência, respectivamente. Os equipamentos mais utilizados são os computadores/notebooks (97,8%) e os smartphones (98,4%). O uso de tablets foi verificado em apenas 33,1% dos alunos. Ferramentas digitais de aprendizagem são utilizadas por 83,0% (n=1008) dos participantes, destes, 91,2% perceberam melhora em seu conhecimento teórico ou prático ao iniciar o uso, sendo a videoaula a mais utilizada (93,2%). Conclusões: O uso das TDICs já está consolidado entre os estudantes de medicina do Brasil e as ferramentas digitais para aprendizagem são utilizadas em larga escala de forma complementar ao ensino médico a fim de otimizar os estudos no dia a dia. A maior parte dos recursos utilizados são gratuitos, apesar de o uso de ferramentas pagas não estar relacionado à renda familiar dos estudantes.


Introduction: "Educational Technology" is the set of procedures that aim to create a dialogue between science and teaching-learning process and is based on the use of Digital Information and Communications Technologies (DICT) by access to the internet and learning digital tools offered through it. The objective of this study is to investigate which types of electronic devices and digital tools are most used by medical students in Brazil. Methods: In this descriptive cross-sectional quantitative research, online questionnaires were applied to 1215 students who attended any medical school year from all five geopolitical Brazilian regions. Results: Out of the total respondents, 94.6% were granted computer laboratories at their educational institution and 98.9% had internet access at home. The most used devices are computers/notebooks (97.8%) and smartphones (98.4%). Tablets use was verified in only 33.1% of the students. Digital learning tools are used by 83.0% (n=1008) of the participants, out of which 91.2% reported improvement in theoretical or practical knowledge after using it. The most used tool is the video lesson (93.2%). Conclusions: DICT have already been consolidated among medical students in Brazil as learning digital tools are widely adopted as complementary educational method. The majority of resources are gratuitous, even though the use of charged tools is not related to students' family income.


Subject(s)
Female , Adolescent , Adult , Middle Aged , Educational Technology , Education, Medical, Undergraduate , Computers , Internet , Information Technology , Smartphone , Learning
17.
J. Phys. Educ. (Maringá) ; 32: e3280, 2021. tab
Article in Portuguese | LILACS | ID: biblio-1360523

ABSTRACT

RESUMO O estudo investigou mudanças na prevalência de obesidade, comportamento sedentário (CS) e inatividade física (IF) em adolescentes. Analisou-se dois estudos transversais, realizados em 2010 e 2017, com amostras probabilísticas de estudantes (328 e 366, respectivamente) em 12 escolas municipais de Niterói, RJ. A obesidade foi classificada com base em valores de Z escore ≥ +2 do índice de massa corporal (IMC = peso/estatura2), segundo critério da Organização Mundial de Saúde; o CS para aqueles com algum comportamento de tela (televisão, vídeo game) por ≥ 2 horas/dia e IF aqueles que realizaram < 300 min/semana de atividade física moderada a intensa. A comparação entre os estudos foi feita com base no teste qui-quadrado (variáveis categóricas) e no teste t de Student (variáveis contínuas). A prevalência de obesidade aumentou nos meninos (6,2% para 15,6% p< 0,001) e diminuiu nas meninas (8,4% para 6,9% p= 0,035). A frequência de CS diminuiu de (90,7% para 67,7% p < 0,001) nos meninos e de (90,3 para 52,8% p < 0,001) nas meninas e a IF não se alterou nos meninos e aumentou nas meninas (84,6% para 89,9% p< 0,001). As mudanças observadas foram dependentes do sexo, com os meninos mais vulneráveis ao aumento de obesidade, as meninas mais IF e ambos os sexos menos CS no período investigado.


ABSTRACT The study investigated changes in the prevalence of obesity, sedentary behavior (SB) and physical inactivity (PI) in adolescents. Two cross-sectional studies were analyzed, 2010 and 2017, with probabilistic samples from students (328 and 366, respectively) in 12 municipal schools in Niterói, RJ. Obesity was classified based on body mass index (BMI = weight / height2) Z score values ≥ +2, according to the World Health Organization criteria. The weight classification was made with body mass index (BMI = weight/height2), the SB for those with some screen behavior (television, video game) for ≥ 2 hours/day and IF those who performed <300 min / week moderate to intense physical activity. The comparison between the studies was based on the chi-square test (categorical variables) and Student's t test (continuous variables). The prevalence of obesity increased in boys (6.2% to 15.6% p <0.001) and decreased in girls (8.4% to 6.9% p = 0.035). The frequency of SB decreased from (90.7% to 67.7% p <0.001) in boys and from (90.3 to 52.8% p <0.001) in girls and the PI did not change in boys and increased in girls (84.6% to 89.9% p <0.001). The changes observed were sex-dependent, with boys more vulnerable to increased obesity, girls more PI and both sexes less SB in the investigated period.


Subject(s)
Humans , Male , Female , Child , Adolescent , Exercise , Adolescent , Sedentary Behavior , Obesity , Schools , Students , Television , Computers , Body Mass Index , Anthropometry , Adolescent Behavior , Video Games , Cell Phone , Overweight
18.
Dental press j. orthod. (Impr.) ; 26(5): e2120218, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1345935

ABSTRACT

ABSTRACT Objective: This study evaluated the effectiveness of preventive strategies on caries risk reduction in patients undergoing orthodontic treatment, using the Cariogram program. Methods: In this quasi-experimental study, samples were selected using a convenience quota sampling technique, in a public dental school. At first, caries risk profile was determined for each subject using the Cariogram before brackets bonding. The sample size consisted of 36 patients. The intervention group (n = 18) received preventive programs, and the control group (n = 18) was trained based on the routine oral health education by means of pamphlets. Then, Cariogram parameters were calculated for patients in both groups after six months. Results: The age range of participants was from 12 to 29 years. The mean percentage of the "Actual chance of avoiding new cavities" section in the intervention group increased from 45.72 ± 21.64 to 62.50 ± 17.64. However, the mean percentage of other parameters - such as "Diet", "Bacteria" and "Susceptibility" - decreased after six months (p< 0.001). Besides, the differences in the mean percentage between intervention and control group at the end of the study period (T1) related to the Cariogram parameters were statistically significant (p< 0.001). Accordingly, the mean percentage of 'Actual chance of avoiding new cavities'' parameter in the intervention group (62.50) was statistically higher than in the control group (42.44) (p< 0.001). Conclusion: Implementing different preventive approaches is able to reduce the caries risk in patients undergoing fixed orthodontic treatment, which can be clearly demonstrated using Cariogram program.


RESUMO Objetivo: O presente estudo usou o software Cariogram para avaliar a eficácia de estratégias preventivas para redução do risco de cáries em pacientes sob tratamento ortodôntico. Métodos: Nesse estudo quase-experimental, as amostras foram selecionadas por meio de uma técnica de amostragem por cota de conveniência, em uma faculdade pública de Odontologia. Inicialmente, o perfil de risco de cárie foi determinado para cada indivíduo usando o Cariogram antes da colagem dos braquetes. A amostra consistiu de 36 pacientes: o grupo experimental (n = 18) recebeu programas preventivos, e o grupo controle (n = 18) recebeu orientações sobre a saúde bucal por meio de folhetos. Após seis meses, os parâmetros obtidos por meio do Cariogram foram calculados novamente para os pacientes de ambos os grupos. Resultados: A faixa etária dos participantes foi de 12 a 29 anos. A porcentagem média da seção "Probabilidade real de prevenir novas cáries" no grupo experimental aumentou de 45,72 ± 21,64 para 62,50 ± 17,64. Por outro lado, a porcentagem média de outros parâmetros - como "Dieta", "Bactérias" e "Suscetibilidade" - diminuiu após seis meses (p< 0,001). Além disso, as diferenças nas porcentagens médias entre o grupo experimental e o grupo controle ao fim do estudo (T1), relacionadas aos parâmetros do Cariogram, foram estatisticamente significativas (p< 0,001). Assim, a porcentagem média do parâmetro "Probabilidade real de prevenir novas cáries" no grupo experimental (62,50) foi estatisticamente maior do que no grupo controle (42,44) (p< 0,001). Conclusão: A implementação de diferentes abordagens preventivas pode reduzir o risco de cárie em pacientes sob tratamento ortodôntico com aparelhos fixos, o que pode ser observado claramente por meio do software Cariogram.


Subject(s)
Humans , Child , Adolescent , Adult , Young Adult , Dental Caries/prevention & control , Dental Caries Susceptibility , Preventive Health Services , Computers , Risk Assessment/methods , Risk Reduction Behavior
19.
Rev. bras. oftalmol ; 80(5): e0046, 2021. graf
Article in English | LILACS | ID: biblio-1347262

ABSTRACT

ABSTRACT Objective To investigate relations between electronic screen use and eye health in a representative sample of the Brazilian population. Methods Data were collected online and analyzed at a private Brazilian hospital (Provisão Hospital, Maringá, Brazil). Male and female individuals aged 12 to 35 years participated in the study. A population-based cross-sectional survey based on a questionnaire developed using the Google Forms interface was carried out. The questionnaire was answered anonymously in order to ensure the confidentiality of data and the privacy of participants. Data were collected between October 13, 2020, and January 30, 2021. Results A total of 200 questionnaires were completed. Most responders were young people aged 18 to 27 years. Daily electronic device use time reported by responders ranged from more than 5 hours (150; 75.5%) to 3 to 5 hours/day (28; 14%) or 2 to 3 hours/day (16; 8%). Only a small proportion of responders (2.5%) used these devices less than 1 hour per day. Most participants had myopia (164; 84%) and/or astigmatism (151; 75.5%), whereas keratoconus was less prevalent (34; 17%). However, 92 participants were unable to say whether they had these diseases or not. Most participants reported eye symptoms after screen use (red eyes, fatigue, dry and gritty eyes and blurred vision). Mental issues such as smartphone dependence and difficulties to communicate while using electronic devices were also addressed. Most responders reported dependence and communication problems. Conclusions Most young people in this sample had sings of eye disease, including keratoconus. Smartphone dependence and addition was also observed. Findings presented may inform future studies and help health authorities to properly guide public health strategies aimed at eye disease prevention.


RESUMO Objetivo Investigar o uso de telas na saúde ocular em uma amostra populacional brasileira. Métodos Os dados foram adquiridos on-line, e as análises foram realizadas em uma clínica privada na Região Sul do Brasil. Os participantes foram indivíduos de 12 a 35 anos, de ambos os sexos. Foi realizada pesquisa transversal de base populacional por meio de questionário elaborado na plataforma Google Forms. O questionário foi respondido de forma anônima, mantendo o sigilo dos dados coletados e a privacidade dos participantes. A coleta de dados teve início em 13 de outubro de 2020 e término em 30 de janeiro de 2021. Resultados Foram respondidos 200 questionários. A maioria foi de jovens entre 18 e 27 anos. O tempo de uso de dispositivos eletrônicos durante o dia foi de mais de 5 horas para 150 (75,5%) entrevistados, 28 (14%) gastavam de 3 a 5 horas por dia, 16 (8%) de 2 a 3 horas por dia e uma pequena parte dos entrevistados (2,5%) usava menos de 1 hora por dia. A maioria dos participantes tinha miopia (164; 84%) e/ou astigmatismo (151; 75,5%). Ceratocone foi menos prevalente (34; 17%), entretanto 92 pessoas não sabiam a resposta. A maioria dos participantes teve problemas nos olhos após o uso da tela, como olhos vermelhos, cansados e secos, além de visão turva. Questões mentais, como dependência de smartphones e dificuldade de comunicação durante o uso do dispositivo, também foram abordadas. A maioria dos entrevistados demonstrou dependência e problemas de comunicação. Conclusões A maior parte dos jovens apresentou quadro de doenças oculares, incluindo ceratocone. Dependência e adição de smartphone também foram observados. Esses resultados apoiam a identificação de fatores associados à patologia ocular, servindo de base para estudos futuros, e podem auxiliar às autoridades de saúde no direcionamento adequado das atividades de prevenção e controle em saúde pública.


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Television/statistics & numerical data , Vision Disorders/epidemiology , Computers/statistics & numerical data , Cell Phone/statistics & numerical data , Eye Diseases/epidemiology , Screen Time , Mental Disorders/epidemiology , Mental Health/statistics & numerical data , Surveys and Questionnaires , Cohort Studies , Video Games/statistics & numerical data , Computers, Handheld/statistics & numerical data , Social Media/statistics & numerical data , Smartphone/statistics & numerical data , Internet Addiction Disorder/epidemiology
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