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According to researchers in Mechanical Engineering at Penn State University, hummingbirds have extreme aerial agility and flight forms, which is why many drones and other aerial vehicles are designed to mimic hummingbird movement. Using a novel modeling method, Professor Bo Cheng and his team of researchers gained new insights into how hummingbirds produce wing movement, which could lead to design improvements in flying robots.
“We essentially reverse-engineered the inner working of the wing musculoskeletal system — how the muscles and skeleton work in hummingbirds to flap the wings,” said first author and Penn State mechanical engineering graduate student Suyash Agrawal. “The traditional methods have mostly focused on measuring activity of a bird or insect when they are in natural flight or in an artificial environment where flight-like conditions are simulated. But most insects and, among birds specifically, hummingbirds are very small. The data that we can get from those measurements are limited.”
Penn State researchers used muscle anatomy literature, computational fluid dynamics simulation data and wing-skeletal movement information captured using micro-CT and X-ray methods to inform their model. They also used an optimization algorithm based on evolutionary strategies, known as the genetic algorithm, to calibrate the parameters of the model. According to the researchers, their approach is the first to integrate these disparate parts for biological fliers.
With this model, the researchers uncovered previously unknown principles of hummingbird wing actuation. While Cheng emphasized that the results from the optimized model are predictions that will need validation, he said that it has implications for technological development of aerial vehicles.
Internet: <www.labmanager.com> (adapted).
Judge the following item according to the previous text.
Traditional measuring techniques offered restricted input
about the flight of insects.
According to researchers in Mechanical Engineering at Penn State University, hummingbirds have extreme aerial agility and flight forms, which is why many drones and other aerial vehicles are designed to mimic hummingbird movement. Using a novel modeling method, Professor Bo Cheng and his team of researchers gained new insights into how hummingbirds produce wing movement, which could lead to design improvements in flying robots.
“We essentially reverse-engineered the inner working of the wing musculoskeletal system — how the muscles and skeleton work in hummingbirds to flap the wings,” said first author and Penn State mechanical engineering graduate student Suyash Agrawal. “The traditional methods have mostly focused on measuring activity of a bird or insect when they are in natural flight or in an artificial environment where flight-like conditions are simulated. But most insects and, among birds specifically, hummingbirds are very small. The data that we can get from those measurements are limited.”
Penn State researchers used muscle anatomy literature, computational fluid dynamics simulation data and wing-skeletal movement information captured using micro-CT and X-ray methods to inform their model. They also used an optimization algorithm based on evolutionary strategies, known as the genetic algorithm, to calibrate the parameters of the model. According to the researchers, their approach is the first to integrate these disparate parts for biological fliers.
With this model, the researchers uncovered previously unknown principles of hummingbird wing actuation. While Cheng emphasized that the results from the optimized model are predictions that will need validation, he said that it has implications for technological development of aerial vehicles.
Internet: <www.labmanager.com> (adapted).
Judge the following item according to the previous text.
Professor Cheng and his team have acquired fresh
perspective on the mechanics of wing motion in
hummingbirds.
According to researchers in Mechanical Engineering at Penn State University, hummingbirds have extreme aerial agility and flight forms, which is why many drones and other aerial vehicles are designed to mimic hummingbird movement. Using a novel modeling method, Professor Bo Cheng and his team of researchers gained new insights into how hummingbirds produce wing movement, which could lead to design improvements in flying robots.
“We essentially reverse-engineered the inner working of the wing musculoskeletal system — how the muscles and skeleton work in hummingbirds to flap the wings,” said first author and Penn State mechanical engineering graduate student Suyash Agrawal. “The traditional methods have mostly focused on measuring activity of a bird or insect when they are in natural flight or in an artificial environment where flight-like conditions are simulated. But most insects and, among birds specifically, hummingbirds are very small. The data that we can get from those measurements are limited.”
Penn State researchers used muscle anatomy literature, computational fluid dynamics simulation data and wing-skeletal movement information captured using micro-CT and X-ray methods to inform their model. They also used an optimization algorithm based on evolutionary strategies, known as the genetic algorithm, to calibrate the parameters of the model. According to the researchers, their approach is the first to integrate these disparate parts for biological fliers.
With this model, the researchers uncovered previously unknown principles of hummingbird wing actuation. While Cheng emphasized that the results from the optimized model are predictions that will need validation, he said that it has implications for technological development of aerial vehicles.
Internet: <www.labmanager.com> (adapted).
Judge the following item according to the previous text.
The research findings presented in the text have yielded
numerous advancements for the aerospace industry.
According to researchers in Mechanical Engineering at Penn State University, hummingbirds have extreme aerial agility and flight forms, which is why many drones and other aerial vehicles are designed to mimic hummingbird movement. Using a novel modeling method, Professor Bo Cheng and his team of researchers gained new insights into how hummingbirds produce wing movement, which could lead to design improvements in flying robots.
“We essentially reverse-engineered the inner working of the wing musculoskeletal system — how the muscles and skeleton work in hummingbirds to flap the wings,” said first author and Penn State mechanical engineering graduate student Suyash Agrawal. “The traditional methods have mostly focused on measuring activity of a bird or insect when they are in natural flight or in an artificial environment where flight-like conditions are simulated. But most insects and, among birds specifically, hummingbirds are very small. The data that we can get from those measurements are limited.”
Penn State researchers used muscle anatomy literature, computational fluid dynamics simulation data and wing-skeletal movement information captured using micro-CT and X-ray methods to inform their model. They also used an optimization algorithm based on evolutionary strategies, known as the genetic algorithm, to calibrate the parameters of the model. According to the researchers, their approach is the first to integrate these disparate parts for biological fliers.
With this model, the researchers uncovered previously unknown principles of hummingbird wing actuation. While Cheng emphasized that the results from the optimized model are predictions that will need validation, he said that it has implications for technological development of aerial vehicles.
Internet: <www.labmanager.com> (adapted).
In the text, the term ‘reverse-engineered’ (first sentence of the second paragraph) is not referring to an industrial product, which represents a variation of its conventional meaning.
Com pertinência à treliça plana esquematizada na figura acima, em que P corresponde a um esforço, assinale a opção correta.
Nesse mesmo período, o estoque de mercadorias disponíveis para venda da empresa somou R$ 48 mil.
Na situação hipotética precedente, a liquidez corrente e a liquidez seca da empresa foram, respectivamente, de
I Marcadores que evoluem muito rápido não são utilizados para o estudo de indivíduos, famílias e populações.
II A técnica RAPD (random amplified polymorphic DNA) produz uma quantidade muito grande de variação observável no que diz respeito à taxa de mudança para uma dada região da molécula. Por isso, a técnica é evitada para estudos de paternidade, modos de reprodução ou organismos clonais.
III Microssatélites são indicados para estudos de populações endocruzadas, típicas em sistemas de cultivo em massa (agricultura, aquacultura, entre outros).
Assinale a opção correta.
Fonte: <https://books.scielo.org> (com adaptações).
Tendo como referência os desenhos ilustrados na figura precedente e considerando os aspectos relacionados aos métodos de conservação e organização de coleções entomológicas, assinale a opção correta.
I Apesar de os microplásticos poluírem o meio ambiente, seu tamanho reduzido não exerce efeitos nocivos à saúde dos seres vivos.
II A divulgação nas redes sociais de imagens de seres humanos interagindo com animais silvestres em casa, no trabalho e em outros ambientes é a melhor maneira de combater a biopirataria.
III A sociedade deve se abster de participar politicamente dos problemas ligados à biodiversidade, visto que este é um assunto restrito aos políticos e aos especialistas.
Assinale a opção correta.
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