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810 articles found
Food & nutrition
Vitamins are essential nutrients for maintaining our health and normal bodily functions. They come in various forms, have different functions, and play important roles in many phys
Earth science
Why does a layer of air form that gets warmer, not colder, with height? This article explains how temperature inversions form and their types, their effects on fine dust, fog, and
Library & information science
This time, I would like to put together material on budgets in public libraries. Public library budget preparation is the process of developing, analyzing, and finalizing plans for
Robotics
Inverse kinematics finds the joint angles that place a robot’s end effector at a desired pose. This piece covers forward versus inverse kinematics, multiple or missing solutions an
Information technology
What an API (application programming interface) is, how Korean services such as Naver, Kakao, and the Public Data Portal use APIs, how to get an API key and connect to an API, and
Tourism studies
A duty-free shop sells goods to travelers leaving the country without customs duties or value-added tax. This article covers how duty-free shops began, why they can drop taxes, the
Library & information science
Co-citation analysis judges two documents to be closer in subject the more often other documents cite them together. Learn how it emerged, how co-citation strength is counted, how
Statistics
This article explains the concept and definition of variables in statistics, the difference between independent and dependent variables with examples from various fields, the disti
Journalism & communication
A pseudo-event is an event planned and staged so that it will be reported and widely publicized, rather than one that happens on its own. This article covers the concept introduced
Logistics
The Economic Order Quantity (EOQ), presented by Ford W. Harris in 1913, is the order size that minimizes the sum of fixed ordering costs and inventory holding costs when demand is
General knowledge
This time, I would like to put together material on the process through which research in the social sciences is conducted. Unlike natural science research, which studies matter th
Earth science
A volcanic winter is a drop in global temperatures lasting several years after a huge, sulfur-rich eruption spreads tiny sulfuric acid droplets through the stratosphere and blocks
