A robotic game of cat and mouse in a lab shows us the possibilities of future robots carrying out search-and-rescue missions or wildlife protection without too much human guidance.

The Tianjicat robot developed by researchers at Tsinghua University in China uses a brain-inspired computing chip called TianjicX.The so-called neuromorphic(神经形态)chip can use a variety of Al technologies at the same time in an energy-saving way. It is one example of experiments with neuromorphic systems that could allow small robots to make decisions using limited computing resources and power.

The researchers asked the Tianjicat robot to catch up with another robot that was set to move freely in a room full of barriers. This required Tianjicat to track the mouse robot by using both sight and sound detection,and to find the best way to hunt its pretend prey(猎物)without knocking anything. The team said that the TianjicX chip reduced the amount of power for the robot cat to make decisions.

Performing a cat-and-mouse chase would be more difficult for most other robots, because they usually follow very predictable routines in warehouses or factories, Many robots that interact with more complex and unpredictable environments rely on remote control by human operators, or else must keep wireless connections with distant data centres. Neuromorphic systems haven’t yet been used on a large scale, but their relatively small size, weight and power requirements could provide practical advantages.

The Tianjicat robot is worldwide acknowledged. “For robotics, this is very important because it allows the system to run longer in hard-to-reach environments,” says Jeffrey L.Krichmar at the University of California, Irvine.

Festivals are celebrated all around the world. They have a wide range of origins, such as the seasons of the year, religions, famous figures, and important events. Every festival has its different customs and unique charms. However, no matter how different they may seem, all over the world, the spirit of sharing joy, gratitude, love, or peace is common in all festivals.

Of all the traditional festivals, the harvest festival can be found in almost every culture. This important agricultural festival takes place after all the crops have been gathered in. People celebrate to show that they are grateful for the year’s supply of food. In ancient Egypt, the harvest festival was celebrated during the springtime — the Egyptian harvest season. It featured a parade and a great feast with music, dancing, and sports. Today, in some European countries, people decorate churches and town halls with flowers and fruit, and get together to celebrate over a meal. During the Mid-Autumn Festival in China, families gather to admire the shining moon and enjoy delicious moon cakes.

Customs play a significant role in festivals, but sometimes they can change over time. With the development of modern society and the spread of new ideas, some traditions may fade away and others may be established. One example is the typical Chinese Spring Festival custom of lighting firecrackers to drive away the evil spirits and celebrate the new year. Nowadays, many big cities have given up this custom in order to avoid air pollution. Another example is Halloween, which slowly became an exciting festival for children, in spite of its religious origins.

Festivals are becoming more and more commercial, with businesses taking advantage of the celebrations. Online shopping websites and social media apps have made it much easier for the public to spend more on gifts for their loved ones. Some believe festivals should not be commercialized, while others believe the increase in spending is good for the economy and public happiness.

Festivals are an important part of society. They reflect people’s wishes, beliefs, faiths, and attitudes towards life. They are occasions that allow us to relax and enjoy life, and forget about our work for a little while. They help us understand where we came from, who we are, and what to appreciate. And if you study festivals carefully, you may be surprised to find that different cultures actually have a lot in common after all.

It seems that no one can live a happy life without friendship. While a great number of people expect others to be their friends, they don’t give friendship back. That is why some friendships don’t last long. To have a friend, you must learn to be one. You must learn to treat your friend the way you want your friend to treat you. Learning to be a good friend means learning three rules: be honest; be generous; be understanding.

Honesty is where a good friendship starts. Friends must be able to trust one another. If you do not tell the truth, people usually find out. If a friend finds out that you haven’t been honest, you may lose your friend’s trust. Good friends always depend on one another to speak and act honestly.

Generosity means sharing and sharing makes a friendship grow. You do not have to give your lunch money or your clothes. Naturally you will want to share your ideas and feelings. These can be very valuable to a friend. They tell your friend what is important to you. By sharing them, you help your friend know better.

Sooner or later everyone needs understanding and help with each other. Something may go wrong at school. Talking about the problem can make it easier to solve. Turning to a friend can be a first step in solving the problem. So to be a friend you must listen and understand. You must try to put yourself in your friend’s place so that you can understand the problem better.

No two friendships are exactly alike. But all true friendships have three things in common. If you plan to keep your friends, you must practice honesty, generosity and understanding.