engineering

Liu Yuanzhang

Liu Yuanzhang is a engineering 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 Liu Yuanzhang rather than just read about it. In short: Liu Yuanzhang (simplified Chinese: 刘源张; traditional Chinese: 劉源張; pinyin: Liú Yuánzhāng; January, 1925 – 3 April 2014 ) was an academician of the Chinese Academy of Engineering (CAE), and professor of quality management engineering at Shanghai University. References

Key takeaways

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

Reference excerpt

Liu Yuanzhang (simplified Chinese: 刘源张; traditional Chinese: 劉源張; pinyin: Liú Yuánzhāng; January, 1925 – 3 April 2014 ) was an academician of the Chinese Academy of Engineering (CAE), and professor of quality management engineering at Shanghai University.

References

Worked examples

Example 1 — a first encounter with Liu Yuanzhang

Start with the simplest possible case. Write down what Liu Yuanzhang claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, 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 Liu Yuanzhang 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 Liu Yuanzhang 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 Liu Yuanzhang

In research: Liu Yuanzhang appears in engineering 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 Liu Yuanzhang 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: Liu Yuanzhang is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1925 births, 2014 deaths, 20th-century Chinese engineers, so understanding it makes those chapters shorter.
In everyday life: Look for Liu Yuanzhang 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Liu Yuanzhang” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Liu Yuanzhang in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Liu Yuanzhang 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 Liu Yuanzhang out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Liu Yuanzhang in simple terms?

Why does Liu Yuanzhang matter?

Because it connects several engineering 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 Liu Yuanzhang?

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 Liu Yuanzhang.