A comparative study on the performance of neural networks in visual guidance and feedback applications

Vision-based systems increase the flexibility of industrial automation applications by providing non-touching sensory information for processing and feedback. Artificial neural networks (ANNs) help such conformities through prediction in overcoming nonlinear computational spaces. They transform multiple possibilities of outcomes or regions of uncertainty posed by the system components towards solution spaces. Trained networks impart a certain level of intelligence to robotic systems. This paper discusses two applications of machine vision. The 3 degrees of freedom (DOF) robotic assembly provides an accurate cutting of soft materials with visual guidance using pixel elimination. The 6-DOF robot combines visual guidance from a supervisory camera and visual feedback from an attached camera. Using a switching approach in the control strategy, pick and place applications are carried out. With the inclusion of ANN to make the strategies intelligent, both the systems performed better with regard to computational time and convergence. The networks make use of the extracted image features from the scene for different applications. Simulation and experimental results validate the proposed schemes and show the effectiveness of ANN in machine vision applications

Distribution of luminescent Vibrio harveyi and their bacteriophages in a commercial shrimp hatchery in South India

Luminescent Vibrio harveyi is a natural microflora of marine and coastal water bodies and is associated with mortality of larval shrimp in penaeid shrimp hatcheries. It is also known that the bacteriophages occur virtually in all places where their hosts exist. In this study, distribution of luminescent V. harveyi and the bacteriophages affecting these hosts was examined in a commercial Penaeus monodon hatchery during three shrimp larval production cycles, including a cycle affected by luminescent bacterial (LB) disease outbreak

Two instances of gonadal abnormalities in Indian mackerel

The Indian mackerel Rastrelliger kanagurta is known to be dioecious with male and female gonads in separate individuals. However, gonadal abnormalities such as hermaphroditism and other aberrations have been observed in a few instances. Gonadal abnormalities in mackerel observed during regular biological sampling from fish samples collected from the landing centre is reported here. For the histological analysis, the gonads were fixed in 10% neutral buffered formalin, dehydrated in ethanol series and the cleared samples were embedded in paraffin wax and made into blocks

Microplastics in the gut of anchovies caught from the mud bank area of Alappuzha, Kerala

Marine litter or the non-degradable wastes generated due to anthropogenic activities, has been recognized as one of the major threats to coastal marine ecosystem in the 21st century. These originate mainly from land and enter the aquatic ecosystem through land runoff and also when they are discarded by human beings directly into the coastal waters

Experimental Analysis of Vehicle Operation Parameters Affecting Emission Behavior of Public Transport Buses with Alternative Diesel Fuels

Key results are presented from an exhaust emission study conducted on more than 105 buses in idling condition and selected sample buses from seven fleets in real-world operating conditions in Toledo, Ohio, of the effects of varying vehicular operation parameters on public transport bus emissions. It was observed that for the same amount of time in operation, vehicles in idling mode produced higher average concentrations of carbon monoxide, nitric oxide, nitrogen dioxide, and sulfur dioxide than those in on-road operation. Operating the vehicles in normal engine idling mode and with higher engine temperatures was found to reduce vehicular emissions by up to 30% to 42% as compared with fast idling and lower or colder engine temperatures. Performing regular preventive maintenance reduced emission concentrations by 15% to 20%. The results also highlight that a combination of multiple influencing factors including engine technology, vehicle age, vehicular maintenance, fuel, and past and present operating conditions should be evaluated to better understand and predict vehicular emission behavior

Top-down evaluation of statewide CH4 emissions in California using satellite data

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Not AvailableLuminescent Vibrio harveyi is a natural microflora of marine and coastal water bodies and is associated with mortality of larval shrimp in penaeid shrimp hatcheries. It is also known that the bacteriophages occur virtually in all places where their hosts exist. In this study, distribution of luminescent V. harveyi and the bacteriophages affecting these hosts was examined in a commercial Penaeus monodon hatchery during three shrimp larval production cycles, including a cycle affected by luminescent bacterial (LB) disease outbreak.Not Availabl

An assessment of quality of life among stroke survivors at tertiary care teaching hospital in South India: A randomized clinical trial

Abstract The study's primary aim was to examine how a stroke affects health‐related quality of life (QoL), and a secondary aim was to link this event with clinical and sociodemographic factors. Stroke patients were included in the study. First, 94 patients underwent a quantitative analytical cross‐sectional study 3 months after starting medication. Using multivariable linear regression, relationships between the severity of the initial stroke were investigated. From the raw data, we determined the standard deviation and the standard error of the mean. If the p‐value is less than .05, it is considered significant, and if it's less than .0001, it is extremely significant. The majority 94.68% were diagnosed with ischemic stroke, and only 5.32% were hemorrhagic stroke; 56.32% of the patients were male, and 43.68% were female; one‐third of the patients were found to be smokers and alcoholics; 9.57% of the patients had a family history of stroke; and 9.5% of the patients had a history of stroke. Patients with stroke comorbidities, including high blood pressure 88.19%, diabetes 51.06%, high cholesterol 22.34%, coronary artery disease 23.40%, smoking 30.85%, and alcoholism 24.46%. Significant dangers were posed by both hypertension and smoking. There was a statistically significant improvement in quality of life between the two groups, with the intervention group showing a mean difference of 112. The p‐value for this improvement was less than .0001. The quality of life of stroke survivors can be improved through direct screening, monitoring of the patient, planned therapy, and management

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Not AvailableThe Indian mackerel Rastrelliger kanagurta is known to be dioecious with male and female gonads in separate individuals. However, gonadal abnormalities such as hermaphroditism and other aberrations have been observed in a few instances. Gonadal abnormalities in mackerel observed during regular biological sampling from fish samples collected from the landing centre is reported here. For the histological analysis, the gonads were fixed in 10% neutral buffered formalin, dehydrated in ethanol series and the cleared samples were embedded in paraffin wax and made into blocks.Not Availabl