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中国科学家为何要把算力“打”上天？,中国科学家为何要把算力“打”上天？_我的网站

A |     　　人造卫星通常在通信、导航、遥感、科学探测等领域发挥作用，如今，中国科学家正尝试让卫星多一颗“大脑”——把算力也送上太空。那么，为何一定要把算力“打”上天？　　太空计算星座就像把“电脑”打上天　　2025年5月，我国将全球首个太空计算卫星星座“星算”送入太空。    

    Newly released wartime records from the Hailar branch of Japan's notorious Unit 731. Photo: Xinhua
Newly released wartime records from the Hailar branch of Japan's notorious Unit 731 reveal how the Japanese military disguised biological warfare personnel as conventional infantry troops to conceal secret operations, including human experimentation. 
The Exhibition Hall of Evidences of Crime Committed by Unit 731 of the Japanese Imperial Army released on Wednesday a 185-page archive of "personal background declaration" from the Hailar branch of Unit 731, also known as "Manchuria Unit 543". The documents show that the Japanese military concealed its biological warfare operations under the guise of conventional infantry units and shed new light on the Soviet Union's continued efforts after World War II to investigate and prosecute Japanese biological warfare crimes. 
Unit 731 was a top-secret biological and chemical warfare research base established as the nerve center for Japanese biological warfare in China and Southeast Asia during WWII. At least 3,000 people were used in human experiments conducted by Unit 731, and more than 300,000 people in China were killed by Japan's biological weapons, according to the Xinhua News Agency.
The Japanese Kwantung Army established five branches of Unit 731 in Northeast China - in Hailar, Sunwu, Mudanjiang, Linkou and Dalian. Located in the northeastern part of the Inner Mongolia Autonomous Region, near China's borders with Mongolia and the Soviet Union, the Hailar branch served as a frontline base of the Japanese imperialist army for potential biological warfare operations against the Soviet Union.
The newly released 185-page archive contains key information on 156 members of the Hailar branch of Unit 731, including their names, military ranks, dates of enlistment, duties, transfers and postwar whereabouts. Researchers said the documents constitute first-hand official records for studying the branch's personnel structure and operations. 
Jin Shicheng, a researcher at the Exhibition Hall, said the study produced two major findings. First, the documents reveal that the Japanese military recruited personnel under the cover of ordinary infantry units to conceal biological warfare activities. Some personnel, for example, were recruited under the names of conventional units such as Manchuria Unit 97, Unit 177 and Unit 201. They were then sent to Unit 731 headquarters for three months of training before being assigned to the Hailar branch. The deceptive recruitment system was intended to conceal the crimes committed by Unit 731, including human experimentation.
Moreover, the archive provides evidence of continued postwar investigations into Japanese biological warfare crimes. Of the 156 personnel listed in the documents, 145 were captured by Soviet forces after the war and detained in the Soviet Union. Four were tried in Khabarovsk between April and September 1950. The researcher said the records show that Soviet investigations and judicial efforts concerning Japanese biological warfare crimes continued after the trial held in 1949.
    A photo published by Xinhua showed a record on medic Tanizaki Hitoshi in the "personal background declaration" records of Unit 731's Hailar branch. Photo: Xinhua
A photo published by Xinhua showed a record on medic Tanizaki Hitoshi in the "personal background declaration" records of Unit 731's Hailar branch. Tanizaki, originally named Ozaki Hitoshi, is documented in historical records that, together with his oral testimony, form a chain of evidence further substantiating the crimes committed by Unit 731.
Experts said the new revelation of the Hailar branch deepens research into Unit 731 and, together with previously obtained oral testimony from former members, form a broader chain of evidence. The official records exposed the efforts by the Japanese military to disguise their crimes against humanity and provided further evidence of the state-organized system behind Japan's biological warfare program, while adding important material to research on Unit 731 and postwar prosecutions.
Global Times 
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B | 该星座首发12颗卫星，每颗卫星均搭载了星载智算系统、星间通信系统，具备太空计算、太空互联能力。　　那么，什么是“计算卫星”？对此，中国科学院微小卫星创新研究院研究员郑文在中国科学院《科学公开课》中介绍，这就像是把人们常用的笔记本电脑“打”到天上去了，使得原来要在地上处理的数据，可以在天上得到及时处理。　　未来，郑文透露，可能通过星簇或星群组网形成统一的算力供给，最终希望在太空直接建造一个超大型算力中心：“我们可能会在太空中间建一个边长4000米×4000米的一个航天器，来提供无限算力。真正在太空中间建立起一个计算的基础设施，给每一个人提供算力服务。”　　为何一定要把算力“打”上天？　　把算力中心搬上太空有着一定的现实优势，例如，能源——太阳一直在，太阳能源持续可得。

C | 此外，空间中背日面温度比较低，在散热、热管理方面有一定优势。　　但是，郑文也指出，这样的优势背后并存的是极端环境的严峻挑战：“这也是至今未能大规模实现太空计算的核心原因。第一个难题是散热，第二个难题是高能粒子辐射。”　　太空中没有空气，散热只能靠辐射散热，因此，太空算力中心就需要巨大的辐射散热面积。　　此外，计算机底层依赖电子“0”和“1”的开关状态，而高能粒子一旦穿透芯片，会把电子打翻。郑文解释称：“原本是‘0’的地方可能就变成‘1’了，原来的‘开’就变成了‘关’，这样一来，输出的信息就会变成乱码”。因此，这两大极端条件正是建设太空计算设施的瓶颈。　　把算力送上太空并非最终目标　　中国科学院微小卫星创新研究院研究员郑文表示，将算力送上天是实现自主智能的关键一步。例如，让中国空间站的机械臂拥有能够计算的“大脑”，从而实现代替航天员执行舱外操作的目标。　　除了自主操作外，科学家们还希望卫星能够更智能地去完成一些任务。郑文透露，中国科学院微小卫星创新研究院正在设计一款未来航天器——“哪吒(NEZHA)”。从它的名字中可以大致推断出它的形态，郑文介绍，它有“三头六臂”，能变形，还能在太空中自主飞行：“它多了两个手臂，可以自主执行维修任务，例如，有一些卫星坏了或者没有能源了，就可以把这些小‘哪吒’派出去，进行维修、修复。”　　郑文表示，只有把人工智能、算力与卫星深度结合，一同送上太空，未来才能真正建造属于人类的太空基地。　　(中央广播电视总台中国之声)。

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