For all the experiments, we generate augmentations in the same way as in MoCo v2 [1] for pretraining. The learning rate is set tolr = 0.1 and is gradually annealed following a cosine decay schedule [3]. For linear classification, all models are trained for 100 epochs with alearning rate oflr = 10.0. For each image, we randomly generate 32 augmented images and feed these images into the pre-trained network toextract features. The feature vectors are`2 normalized before computing similarities and variances.

On a hot late-summer day in 2005, I sat in a packed, agreeably air-conditioned auditorium and listened to a university administrator welcome the class of 2009. As the popular saying goes, 'The rich go to Peking U, the poor go to Tsinghua, and the ones willing to work themselves to death come to USTC.'" If Peking University is China's Harvard, and Tsinghua is China's MIT, the University of Science and Technology of China, or USTC, is known as "the Caltech of China" for its small size and intense focus on science and engineering. I was proud to be there. But my pride shifted to awkwardness after the speech, when we stood to sing the university anthem, which ends with an exhortation: "Always learn from the people, and learn from the great leader Mao Zedong!" Hearing Mao's name left a bitter taste. It reminded me of career paths my country had denied me. Without the rule of law, I could not become a lawyer. Without a free press, I could not become a journalist. Without democratic elections, I could not become a politician. Instead I did what was expected of Chinese students without political connections or financial resources but with impeccable grades: I came to USTC to study science. The lyrics of the anthem brought up a question my classmates and I would often ponder: Must scientific research be in service of one's country--or can the pursuit of knowledge transcend nationalism? Generations of scientists at USTC have sought to answer this question. The university gave birth to both China's first satellite, launched in 1970, and the world's first quantum-communication satellite, launched in 2016. It is home to China's first synchrotron particle accelerator, and it will soon host a new multibillion-dollar quantum-science center. Over the years, faculty and students have, at times, wielded the university's scientific prestige as a shield to protect academic freedom and political independence. But if the university's rising trajectory in recent years is any indication, science in China thrives most when it serves the state. Today I live and work in the United States. I spoke to many old schoolmates and current USTC researchers to report this article. The story of USTC that emerges reveals the limits of science's ability to transcend China's authoritarian politics. It is also the story of my family across three generations. USTC was founded in Beijing in 1958, to train scientists for China's fledgling nuclear and space programs. Members of the faculty were drawn from China's scientific elite. Fang Lizhi, one of the first, came to teach physics after being deemed too politically outspoken to work on the bomb. "He was actually happy about it!

The University of Science and Technology of China on Friday officially launched the robot "Jiajia" it invented for interactive experience. HEFEI, April 15 (Xinhua) -- A new interactive robot, named Jia Jia, was unveiled Friday by the University of Science and Technology of China (USTC) in Hefei, capital of east China's Anhui Province. Welcome!" the eye-catching robot said as it greeted the audience at the university's multi-media center. "Don't come too close to me when you are taking a picture. It will make my face look fat," Jia Jia said. Jia Jia was developed by a robot research and development team at the USTC, which also developed the model service robot "Kejia." It took the team three years to research and develop this new-generation interactive robot, which can speak, show micro-expressions, move its lips, and move its body, according to team director Chen Xiaoping. Compared to previous interactive robots, Jia Jia's eyeballs roll naturally and its speech is in sync with its lip movements, in addition to her human-like form, Chen said. Jia Jia can not cry or laugh and these are areas to be developed, Chen added. "We hope to develop the robot so it has deep learning abilities.