Hand Eye Control
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Comparison of methods to assess severity of common rust caused by Puccinia sorghi in maize
Disease severity evaluation is an important decision support for adoption of strategies and tactics for disease control. The most commonly used method to assess disease severity is visual, but the problem is repeatability, due to subjectivity and imprecision of estimates. For Puccinia sorghi, a threshold of action of 1% severity was determined, so high preci
Tropical Plant Pathology. Publicado em: 2011-08
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2. Avaliação da Visão Funcional (AVIF) para crianças de dois a seis anos com baixa visão: exame de confiabilidade e de validade
The AVIF-2 to 6 years is a method of Functional Vision Assessment for children with low vision. It was developed by a Physical Therapist and an Occupational Therapist from the Childrens Low Vision Clinic at the São Geraldo Hospital (Clinics Hospital, at UFMG - Federal University of Minas Gerais). In this study, the psychometric characteristics (reliability
Publicado em: 2010
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3. COMPARAÇÃO ENTRE CONTROLES LOOK-AND-MOVE E SERVO-VISUAL UTILIZANDO TRANSFORMADAS SIFT EM MANIPULADORES DO TIPO EYE-IN-HAND / COMPARISON BETWEEN LOOK-AND-MOVE AND VISUAL SERVO CONTROL USING SIFT TRANSFORMS IN EYE-IN-HAND MANIPULATOR SYSTEMS
Computer vision can be used to calibrate and self-localize robots. There are many applications in self-localization and control applied to industrial manipulators and mobile robots. In particular, visual control can be useful in submarine interventions, where a robotic manipulator is mounted on a Remote Operated Vehicle (ROV) to execute tasks at high depths,
Publicado em: 2009
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4. Avaliação neuropsicológica de pacientes expostos ao vapor de mercúrio e de pacientes diabéticos do tipo 2 / Neuropsychological assessments of patients exposed to mercury vapor and of type 2 diabetic patients
Neuropsychological function is known to be affected by exposure to toxic substances and metabolic disorders. Two descriptive studies were performed. The aim was to examine possible neuropsychological dysfunction in individuals with history of occupational exposure to mercury vapor, and in type 2 diabetic patients without retinopathy, in comparison with contr
Publicado em: 2005
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5. Desenvolvimento de esquema de controle com realimentação visual para um robô manipulador
Este trabalho propõe um esquema de controle cinemático, utilizando realimentação visual para um braço robótico com cinco graus de liberdade. Foi desenvolvido um método que utiliza técnicas de visão computacional, para a determinação da posição e orientação cartesiana tridimensional (pose) do braço robótico a partir da imagem do mesmo forneci
Publicado em: 2005
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6. Assessment of the permissible exposure level to manganese in workers exposed to manganese dioxide dust.
The prevalence of neuropsychological and respiratory symptoms, lung ventilatory parameters, neurofunctional performances (visual reaction time, eye-hand coordination, hand steadiness, audioverbal short term memory), and several biological parameters (calcium, iron, luteinising hormone (LH), follicle stimulating hormone (FSH), and prolactin concentrations in
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7. Predictive responses in Parkinson's disease: manual keypresses and saccadic eye movements to regular stimulus events.
In a coincidence timing task, Parkinsonian patients and a control group were instructed to synchronize a keypress with the onset of a visual signal which had been preceded by a regular train of warning signals. Although the Parkinsonian group had previously exhibited slower reactions in a conventional simple reaction-time task, they were able to generate pre
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8. Heightened Resistance of Athymic, Nude (nu/nu) Mice to Experimental Pseudomonas aeruginosa Ocular Infection
BALB/c-derived athymic, nude (nu/nu) mice exhibited a heightened natural resistance to experimental corneal infection with Pseudomonas aeruginosa when compared with their heterozygote (nu/+) littermates. Stereomicroscopic examination of the eyes of nu/nu mice 24 h after corneal trauma and topical bacterial application revealed slightly cloudy corneas (iris v
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9. Indoleamine-mediated reciprocal modulation of on-centre and off-centre ganglion cell activity in the retina of the cat.
The effects of applying the indoleamines serotonin (5-hydroxytryptamine) and 5-methoxy-N,N-dimethyltryptamine (MDT) ionophoretically onto cat retinal ganglion cells were studied in the optically intact eye of the cat. Serotonin suppressed both the spontaneous activity and light-evoked discharge of on-centre ganglion cells, regardless of the visual stimulus u
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10. Acute neurobehavioural effects of toluene.
An acute inhalation chamber study of 42 college students was performed to investigate the relation between exposure to 0, 75, and 150 ppm of toluene and changes in central nervous system function and symptoms. Paid subjects were exposed for seven hours over three days. Verbal and visual short term memory (Sternberg, digit span, Benton, pattern memory); perce
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11. Acute behavioural comparisons of toluene and ethanol in human subjects.
A comparison of toluene and ethanol (EtOH) induced changes in central nervous system (CNS) function and symptoms were evaluated in two studies, and when possible the effects of toluene were expressed in EtOH equivalent units. The toluene concentrations were 0, 75, and 150 ppm, bracketing the American Conference of Governmental Industrial Hygienists threshold