computer science

Shari Trewin

Shari Trewin is a computer science 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 Shari Trewin rather than just read about it. In short: Shari Trewin is a computer scientist specializing in human–computer interaction, and known for her research on accessibility and on algorithmic bias against people with disabilities. Educated in Scotland, she works in the US for the Google accessibility team.

Key takeaways

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

Reference excerpt

Shari Trewin is a computer scientist specializing in human–computer interaction, and known for her research on accessibility and on algorithmic bias against people with disabilities. Educated in Scotland, she works in the US for the Google accessibility team. Trewin has a 1998 Ph.D. from the University of Edinburgh, on the use of computer user interfaces by people with disabilities, supervised by Helen Pain. She joined IBM Research in 2000, becoming program director for IBM Accessibility before moving to Google. She chaired SIGACCESS, the special interest group on accessible computing of the Association for Computing Machinery (ACM), from 2015 until 2021. Trewin was named as a distinguished member of the ACM in 2011.

References

External links Shari Trewin publications indexed by Google Scholar

Worked examples

Example 1 — a first encounter with Shari Trewin

Start with the simplest possible case. Write down what Shari Trewin claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, 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 Shari Trewin 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 Shari Trewin 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 Shari Trewin

In research: Shari Trewin appears in computer science 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 Shari Trewin 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: Shari Trewin is common in secondary-school and first-year university syllabi. It links to neighbouring topics Alumni of the University of Edinburgh, American computer scientists, American women computer scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Shari Trewin 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 Shari Trewin in 20 minutes

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

Frequently asked questions

What is Shari Trewin in simple terms?

Why does Shari Trewin matter?

Because it connects several computer science 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 Shari Trewin?

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 Shari Trewin.