science

Jurn

Jurn is a 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 Jurn rather than just read about it. In short: Jurn is a free online search tool for the finding and downloading of free full-text scholarly works. It was established by David Haden in a public online open beta version in February 2009, initially for finding open access electronic journal articles in the arts and humanities.

Key takeaways

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

Reference excerpt

Jurn is a free online search tool for the finding and downloading of free full-text scholarly works. It was established by David Haden in a public online open beta version in February 2009, initially for finding open access electronic journal articles in the arts and humanities. An additional public directory of web links to the indexed journals was placed online in mid 2009. The Jurn search service and directory has since been continually updated and cleaned. In March 2014 Jurn expanded to index topics in science, biomedicine, business and economics, plus selected university repository services for open access deposit papers and full-text theses. Jurn is powered by a Google Custom Search Engine (CSE) and is run without any adverts. LiLi Li of Georgia Southern University described Jurn as a "recognised academic search engine" in his 2014 book Scholarly Information Discovery in the Networked Academic Learning Environment, and included a paragraph describing the Jurn service. Jurn also has a descriptive entry in Marcus P. Zillman's annotated White Paper "Academic and Scholar Search Engines and Sources". In 2015 University of Maryland librarian Matthew Testa tested JURN alongside Google Scholar and he concluded that... "JURN can be an effective way to find OA [open access] content from a variety of sources". At 2016 Jurn is web linked by a number of academic and government libraries, including the Central Library of the European Commission, Jesus College, University of Cambridge, University of California and Princeton University Library. GRAFT (Global Repository Access Full-Text), powered by a Google Custom Search Engine (CSE), searches across full-text and records alike, in 4,765 repositories.

See also List of academic databases and search engines

References

External links Web site

Worked examples

Example 1 — a first encounter with Jurn

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

In research: Jurn appears in 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 Jurn 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: Jurn is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bibliographic databases and indexes, British websites, Full-text scholarly online databases, so understanding it makes those chapters shorter.
In everyday life: Look for Jurn 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 Jurn in 20 minutes

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

Frequently asked questions

What is Jurn in simple terms?

Why does Jurn matter?

Because it connects several 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 Jurn?

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 Jurn.