astronomy

Li Sanli

Li Sanli is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Li Sanli rather than just read about it. In short: Li Sanli (Chinese: 李三立; pinyin: Lǐ Sānlì; 24 August 1935 – 23 April 2022) was a Chinese computer scientist and also an academician of the Chinese Academy of Engineering (CAE), professor of Tsinghua University, dean and professor of School of Computer Engineering and Science in Shanghai University. Biography Li was born into a highly educated family in Shanghai, on 24 August 1935.

Key takeaways

Li Sanli belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Li Sanli to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Li Sanli from memory before moving on to harder problems.

Reference excerpt

Li Sanli (Chinese: 李三立; pinyin: Lǐ Sānlì; 24 August 1935 – 23 April 2022) was a Chinese computer scientist and also an academician of the Chinese Academy of Engineering (CAE), professor of Tsinghua University, dean and professor of School of Computer Engineering and Science in Shanghai University.

Biography Li was born into a highly educated family in Shanghai, on 24 August 1935. His name "Sanli" (三立) comes from Zuo Zhuan (左传) and means "three Immortalities of speech, morality and meritorious service". In 1951, he entered Tsinghua University, majoring in the Radio Electronics Department. After graduation, he stayed at the university and worked at there. He began graduate work at Soviet Academy of Sciences in 1956 and earned his vice-doctorate under the advisement of C. A. Lebedev in 1960. He returned to China in 1960 and continued to teach at Tsinghua University. In 1961, he became leader of the Operation Control Group of Tsinghua University for developing electronic tube computer 911. In 1972, he was responsible for developing a 724 computer system with small and medium-sized integrated circuits as the main components. In 1988, he concurrently served as dean of the School of Computer Engineering and Science, Shanghai University. In 2000, he was responsible for the successful development of the cluster system "Ziqiang 2000" with 220 processors in Shanghai University. In August 2003, he developed a "Shenchao 21C" supercomputer with 256 CPUs and a peak speed of 1.5 trillion times for Shenzhen University. In 2004, his research team cooperated with Hewlett-Packard to complete a supercomputer "Shangda Ziqiang 3000" with a total of 352 CPUs and a peak speed of more than 2 trillion times in Shanghai University. On 23 April 2022, he died of an illness in Beijing, at the age of 86.

Contributions Li was one of China's pioneers in computer science and engineering. He has won many domestic awards for research in the fields of computer architecture and organization. The achievement of "cluster- based high performance computer Ziqian2000," which was organized by Li at Shanghai University, won the First Grade Award from the government of Shanghai in 2001. In addition, the president of Hong Kong Polytechnic University offered him the university's Outstanding Scholar Award in 1995. Li has published 12 books and more than 100 papers in key journals and at international conferences. Of these, his book "RISC-Single and Multiple Issuing Architecture" won the Special Grade Award for Excellent Academic Books conferred by State Education Commission. Li was also a deputy director of the Information Technology Consultant Committee of Shanghai Municipal Government and executive director of the Chinese Computer Federation. He was the chief scientist on the High Performance Computing project of the State Climbing Program from 1995 to 2000 and has served as co-chairperson in Computer Disciplines of the Academic Degree Committee of the China State Council. He was elected vice-president and president of the IEEE Mainland Section separately in 1993/1994 and 1995/1996. He was also elected seven times to serve on the board of directors of EUROMICRO, a well-known European computer association, from 1984 to 1997.

Honours and awards 1995 Member of the Chinese Academy of Engineering (CAE)

References

Worked examples

Example 1 — a first encounter with Li Sanli

Start with the simplest possible case. Write down what Li Sanli claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Li Sanli before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Li Sanli ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Li Sanli

In research: Li Sanli appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Li Sanli in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Li Sanli is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1935 births, 2022 deaths, Academic staff of Shanghai University, so understanding it makes those chapters shorter.
In everyday life: Look for Li Sanli outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Li Sanli in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Li Sanli means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Li Sanli out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Li Sanli in simple terms?

Why does Li Sanli matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Li Sanli?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Li Sanli.