题型:阅读理解 题类: 难易度:普通
广东省梅州市部分学校2023-2024学年高二下学期4月期中英语试题
With a brain the size of a pinhead, insects perform fantastic navigational (导航的)abilities. They avoid obstacles and move through small openings. How do they do this, with their limited brain power? Understanding the inner workings of an insect's brain can help us in our search towards energy-efficient computing, physicist Elisabetta Chicca of the University of Groningen demonstrates with her most recent result: A robot that acts like an insect.
In search of the neural(神经的) mechanism that drives insect behaviour, PhD student Thorben Schoepe developed a model of its neuronal activity and a small robot that uses this model to navigate. Schoepe's model is based on one main principle: always steer towards the area with the least apparent motion.
He had his robot drive through a long "corridor"—consisting of two walls with a random print on it—and the robot centred in the middle of the corridor, as insects tend to do. In other virtual environments, such as a space with obstacles or small openings, Schoepe's model also showed similar behaviour to insects.
"The model is so good," Chicca concludes, "that once you set it up, it will perform in all kinds of environments. That's the beauty of this result."
The fact that a robot can navigate in a realistic environment is not new. Rather, the model gives insight into how insects do the job, and how they manage to do things so efficiently.
Chicca explains, "Much of robotics is not concerned with efficiency. We humans tend to learn new tasks as we grow up and within robotics. This is reflected in the current trend of machine learning. But insects are able to fly immediately from birth. An efficient way of doing that is hardwired in their brains. In a similar way, you could make computers more efficient."
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