astronomy

Jens Rasmussen (human factors expert)

Jens Rasmussen (human factors expert) 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 Jens Rasmussen (human factors expert) rather than just read about it. In short: Jens Rasmussen (11 May 1926 – 5 February 2018) was a system safety, human factors and cognitive systems engineering researcher at the Risø National Laboratory in Risø, Denmark. He was highly influential within the field of safety science, human error and accident research.

Key takeaways

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

Reference excerpt

Jens Rasmussen (11 May 1926 – 5 February 2018) was a system safety, human factors and cognitive systems engineering researcher at the Risø National Laboratory in Risø, Denmark. He was highly influential within the field of safety science, human error and accident research. His contributions include the skills, rules, knowledge (SRK) framework, risk management framework, dynamic safety model, AcciMap Approach, and others.

Biography Rasmussen was born in Ribe, Denmark. In 1950, he earned an M.Sc. degree in electronic engineering, with a background in control engineering. After completing his degree, he worked for several years at the Radio Receiver Research Laboratory. In 1956, Rasmussen was recruited to work at the Danish Atomic Energy Commission. After several years, he was named the head of the Electronics Department at the Atomic Research Establishment Risø (eventually renamed Risø National Laboratory). In 1981, Rasmussen was appointed Research Professor at both the Technical University of Denmark and at Risø National Laboratory.

Contributions

Dynamic safety model Rasmussen proposed a state-based model of a socio-technical system as a system that moves within a region of a state space. The region is surrounded by three boundaries:

economic failure unacceptable work load functionality acceptable performance Incentives push the system towards the boundary of acceptable performance: accidents happen when the boundary is exceeded.

Risk management framework Rasmussen proposed a multi-layer view of socio-technical systems, with hazardous processes and work at the lowest level, and government at the highest level. The different levels involve different research disciplines (e.g., mechanical, chemical, and electrical engineering at the lowest level, political science, law, economics, and sociology at the highest level, and other domains in-between) and different environmental stressors (e.g., changing political climate at the top level, fast pace of technological change at the lowest level)

Skills, rules, knowledge (SRK) framework See Skills, Rules, Knowledge (SRK) framework.

Abstraction hierarchy See the abstraction hierarchy.

Ecological interface design See Ecological interface design.

AcciMaps See AcciMap approach.

Selected publications

Books Jens Rasmussen, Annelise M. Pejtersen, L.P.Goodstein (1994). Cognitive Systems Engineering. John Wiley & Sons. ISBN 0471011983.{{cite book}}: CS1 maint: multiple names: authors list (link) Jens Rasmussen (1986). Information processing and human-machine interaction: an approach to cognitive engineering. North-Holland. ISBN 9780444009876. Jens Rasmussen (2000). Proactive Risk Management in a Dynamic Society. Swedish Rescue Services Agency. ISBN 9172530847.

Papers Rasmussen, Jens; Jensen, A (1974). "Mental procedures in real-life tasks: a case study of electronic trouble shooting". Ergonomics. 17 (3): 293–307. doi:10.1080/00140137408931355. PMID 4442376. Rasmussen, Jens (May–June 1983). "Skills, rules, and knowledge; signals, signs, and symbols, and other distinctions in human performance models". IEEE Transactions on Systems, Man, and Cybernetics. SMC-13 (3): 257–266. doi:10.1109/TSMC.1983.6313160. S2CID 1525146 – via IEEE Xplore. Cook, Richard; Rasmussen, Jens (2005). ""Going solid": a model of system dynamics and consequences for patient safety". BMJ Quality & Safety. 14 (2): 130–134. doi:10.1136/qshc.2003.009530. PMC 1743994. PMID 15805459.

References

The Legacy of Jens Rasmussen, special issue of Applied Ergonomics, Volume 59, Part, B, Pages 471-656 (March 2017) The Legacy of Jens Rasmussen, Adjunct ODAM 2014 Symposium

Worked examples

Example 1 — a first encounter with Jens Rasmussen (human factors expert)

Start with the simplest possible case. Write down what Jens Rasmussen (human factors expert) 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 Jens Rasmussen (human factors expert) 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 Jens Rasmussen (human factors expert) 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 Jens Rasmussen (human factors expert)

In research: Jens Rasmussen (human factors expert) 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 Jens Rasmussen (human factors expert) 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: Jens Rasmussen (human factors expert) is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1926 births, 2018 deaths, Academic staff of the Technical University of Denmark, so understanding it makes those chapters shorter.
In everyday life: Look for Jens Rasmussen (human factors expert) 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 “Jens Rasmussen (human factors expert)” →

Affiliate

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

How to study Jens Rasmussen (human factors expert) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Jens Rasmussen (human factors expert) 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 Jens Rasmussen (human factors expert) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jens Rasmussen (human factors expert) in simple terms?

Why does Jens Rasmussen (human factors expert) 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 Jens Rasmussen (human factors expert)?

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 Jens Rasmussen (human factors expert).