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1.
Motriz rev. educ. fís. (Impr.) ; 21(1): 23-33, Jan-Mar/2015. tab, graf
Article in English | LILACS | ID: lil-744483

ABSTRACT

The level of variability in psychomotor behavior and the use of several distinct sets of equipments in Reaction Time (RT) assessments might jeopardize the validity and reliability of such measures. This study presents the development and verification of Emboici Robot-a robot capable of performing accurate RT assessments consisting of response to a visual stimulus by pressing a button-whose purpose is to measure the accuracy of RT assessments. We evaluated the accuracy and precision on four different days, each providing 300 measurements. These assessments generated a RT of 46.95ms (+6.04). No significant effects were found in the RTs obtained and, as a result, there is evidence that the Emboici Robot is stable, reliable, and precise. The robot can be a viable solution for verifying precision and accuracy of any given software with simple RT assessments with visual stimulus requiring as response the pressing of a button or key.


A variabilidade do comportamento psicomotor e o uso de diferentes equipamentos para medidas de Tempo de Reação (TR) podem comprometer a validade e fidedignidade destas medidas. Este estudo desenvolve e valida o Emboici Robot-um robô capaz de responder a estímulos visuais com o pressionamento de um botão-para medir a precisão e acurácia das medidas de TR visual. Avaliou-se as medidas de TR em quatro ocasiões, com 300 medidas em cada uma. Estas medidas geraram um TR de 46,95ms (+6,04). Não foram encontradas diferenças significativas nos TRs obtidos pelo Emboici Robot, e os resultados demonstram evidências de que o Emboici Robot é estável, fidedigno e preciso para a obtenção de medidas de TR, podendo ser uma solução viável para verificar a precisão e acurácia de qualquer software com testes de TR simples com estímulo visual que requeira o pressionamento de um botão ou tecla para a resposta.


La variabilidad de comportamiento psicomotor y el uso de diferentes equipos para medidas de tiempo de reacción (TR) pueden poner en peligro la validez y fiabilidad de estas medidas. Este estudio desarrolla y valida Emboici Robot-capaz de responder con precisión a los estímulos visuales con sólo pulsar un botón-para medir la precisión y la exactitud de las medidas de TR visuales. Se evaluaron las medidas de TR en cuatro ocasiones, con 300 pasos cada uno. Estas medidas generaron un TR de 46,95ms (+6,04). No se encontraron diferencias significativas en los TR obtenidos por Emboici Robot. Los resultados mostraron que Emboici robot es estable, confiable y preciso para la obtención de mediciones de TR, y puede ser una solución viable para verificar la exactitud y la precisión de cualquier software con pruebas de TR con estímulo visual simple que requieren presionar un botón o clave para la respuesta.


Subject(s)
Humans , Robotics , Software , Reaction Time/physiology , Computer Peripherals , Photic Stimulation/instrumentation
2.
Clinics ; 64(10): 975-981, 2009. ilus
Article in English | LILACS | ID: lil-529540

ABSTRACT

OBJECTIVES: The objectives of this study were to develop a pointing device controlled by head movement that had the same functions as a conventional mouse and to evaluate the performance of the proposed device when operated by quadriplegic users. METHODS: Ten individuals with cervical spinal cord injury participated in functional evaluations of the developed pointing device. The device consisted of a video camera, computer software, and a target attached to the front part of a cap, which was placed on the user's head. The software captured images of the target coming from the video camera and processed them with the aim of determining the displacement from the center of the target and correlating this with the movement of the computer cursor. Evaluation of the interaction between each user and the proposed device was carried out using 24 multidirectional tests with two degrees of difficulty. RESULTS: According to the parameters of mean throughput and movement time, no statistically significant differences were observed between the repetitions of the tests for either of the studied levels of difficulty. CONCLUSIONS: The developed pointing device adequately emulates the movement functions of the computer cursor. It is easy to use and can be learned quickly when operated by quadriplegic individuals.


Subject(s)
Adult , Female , Humans , Male , Middle Aged , Computer Peripherals , Communication Aids for Disabled/standards , Head Movements/physiology , Quadriplegia/physiopathology , User-Computer Interface , Analysis of Variance , Software
3.
S. Afr. j. infect. dis. (Online) ; 24(2): 22-26, 2009. ilus
Article in English | AIM | ID: biblio-1270611

ABSTRACT

Nosocomial infections result in severe health and financial difficulties for patients and healthcare facilities. The objective of the study was to determine the presence of Staphylococcus aureus on computer mice and keyboards in the intensive care units (ICUs) of Universitas Academic Hospital; Bloemfontein; and ICU staff's knowledge regarding cleaning of computer mice and keyboards and their potential hazard as reservoirs for pathogens. Swab specimens from computer mice and keyboards (14 each) were investigated for S. aureus. Swabbing was repeated six months later. Standard microbiology laboratory methods were used to culture and identify organisms. An anonymous questionnaire completed by the ICU staff determined their awareness of computer mice and keyboards as potential sources of nosocomial infections. In addition to various environmental microorganisms and normal human flora; S. aureus was initially isolated from one computer mouse; and from two keyboards and five mice six months later. The questionnaire response rate was 85.6. Seventy-one percent of respondents stated that they regarded keyboards and mice as an important source of nosocomial infections. Nevertheless; 62of doctors and 40.3of nurses indicated that they never washed their hands before or after using the computer. Ninety-seven percent of respondents were not aware of an official cleaning policy for computer equipment. In order to prevent nosocomial infections resulting from microbial transmission between equipment; staff and patients; proper cleaning policies should be implemented


Subject(s)
Computer Peripherals , Critical Care , Cross Infection , Staphylococcus aureus
4.
Journal of Korean Academy of Nursing ; : 781-787, 2009.
Article in Korean | WPRIM | ID: wpr-199485

ABSTRACT

PURPOSE: The purpose of this study was to evaluate a computerized touch-screen version of the asthma-specific quality-of-life (cA-QOL) questionnaire against the conventional paper-and-pencil version (pA-QOL) for equivalence, time for completion, user preference, and ease of use. METHODS: A total of 261 patients were recruited. A randomized cross-over design was used. Patients in group A completed the cA-QOL first while waiting to see a physician, and completed the pA-QOL version after seeing the physician. Patients allocated in group B completed these questionnaires in the reverse order. The patients were asked questions about user preference and ease of use of the cA-QOL. The time taken to complete both versions of the questionnaire was measured. RESULTS: Weighted kappa coefficients of all items showed almost perfect agreement. The time required to complete the pA-QOL is faster than the time for cA-QOL. The patients who preferred the cA-QOL were 37.5%, while those who preferred the pA-QOL were 29.9%. Most patients reported that the cA-QOL was "easy" or "very easy" to complete. CONCLUSION: The cA-QOL is the computerized equivalent of the pA-QOL. The findings herein demonstrate that the cA-QOL can be helpful to nurses in busy practices for assessing, collecting, and evaluating their patients' health related quality of life.


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Asthma/psychology , Computer Peripherals , Demography , Patient Preference , Quality of Life , Surveys and Questionnaires , Time Factors , User-Computer Interface
5.
J. bras. med ; 90(3): 28-37, mar. 2006. tab
Article in Portuguese | LILACS | ID: lil-446422

ABSTRACT

Os computadores hospitalares são fômites novos e desconhecidos e sua introdução nos quartos dos pacientes já é uma realidade em alguns hospitais modernos. Cinqüenta amostras de teclados de computadores desktop hospitalares foram examinadas no período de agosto a outubro de 2005. Microrganismos mesófilos aeróbios foram detectados em 82 por cento (41/50) dos teclados examinados; fungos em 84 por cento (42/50); enterococos em 24 por cento (12/50) e estafilococos em 28 por cento (14/50) dos teclados. O nível de contaminação nos teclados foi compatível com o encontrado em diversas superfícies. Porém, Staphylococcus sp. coagulase-positivos (8 por cento) e Enterococcus sp. (25 por cento), com perfis de resistência monitorados pelos sistemas internacionais de vigilância, foram encontrados, caracterizando-os como fontes potenciais na disseminação de patógenos hospitalares. O uso de uma cobertura protetora, a desinfecção periódica e uma política de uso que dificulte a disseminação de patógenos são recomendados.


Subject(s)
Humans , Computer Peripherals , Equipment Contamination/prevention & control , Disease Reservoirs , Cross Infection/transmission , Infection Control/trends , Hygiene , Bacterial Infections/etiology , Bacterial Infections/prevention & control , Bacterial Infections/transmission , Hand Disinfection/standards
6.
Acta fisiátrica ; 11(3): 111-116, dez. 2004. ilus, tab
Article in Portuguese | LILACS | ID: lil-413582

ABSTRACT

O mouse é um periférico muito usado em informática, todavia seu uso por tempo prolongado pode levar a sobrecarga da musculatura do antebraço resultados em quadros dolorosos. Este estudo teve como objetivo verificar se um novo mouse, com desenho que respeita leis biomecânicas da mão e punho, estaria associado a menor sobrecarga muscular que um modelo convencional. Vinte usuários habituais de computador sadios participaram de um estudo do tipo cross-over, no qual a atividade muscular dos músculos trapézio, extensor do carpo e flexor do polegar foi captada por meio de eletroneuromiografia de superfície durante a realização de atividades simples como jogar paciência por 10 minutos e deslocar-se numa planilha.Também foram aplicados questionários sobre aparecimento de sintomas em membros superiores após o uso de cada mouse. Por meio da integração do sinal elétrico nos períodos de tempo da captação, o esforço muscular pode ser quantificado para processamento estatístico. Apenas em extensores do carpo foi observada redução estatisticamente significante da solicitação muscular, mesmo assim, apenas ao jogar Paciência. O posicionamento do punho proporcionado pelo mouse em teste facilitou a manutenção dessa articulação em posição de preparo para o acionamento dos botões do mouse reduzindo a atividade muscular. Seu uso rotineiro pode ser uma estratégia para a prevenção de dores em membros superiores de usuários de computadores e para o controle sintomático naqueles que já apresentam alguma lesão local.


Subject(s)
Computer Peripherals , Computer Peripherals , Biomechanical Phenomena , Electromyography , Ergonomics/instrumentation , Ergonomics , Physical Exertion , Recruitment, Neurophysiological
7.
Acta sci ; 22(1): 195-8, mar. 2000. ilus
Article in Portuguese | LILACS | ID: lil-272684

ABSTRACT

Foram desenvolvidos dois protótipos com o objetivo de facilitar a utilizaçäo do computador a pessoas portadoras d deficiência de coordenaçäo motora. Os produtos foram desenvolvidos em funçäo das dificuldades observadas no pessoal atendido pelo Centro de Valorizaçäo da Vida Independente- CVI, de Maringá. As pessoas que colaboraram testando esses protótipos possuem deficiências distintas, ocasionadas por paralisia cerebral, lesäo medular e má formaçäo fetal.


Subject(s)
Humans , Adaptation to Disasters , Computer Peripherals , Movement Disorders/etiology , Cerebral Palsy/complications , Fetus/abnormalities , Bone Marrow/injuries
9.
Bauru; Universidade de Säo Paulo. Faculdade de Odontologia de Baurú; 1994. 61 p. ilus, tab, graf.
Monography in Portuguese | LILACS, BBO | ID: lil-250582
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