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776 articles found
Tourism studies
Rural tourism in Korea has become an important social and economic activity that offers time for rest and healing to people weary of urban life. This resource examines the definiti
Journalism & communication
Why does a friend’s recommendation often sway us more than an ad? This article explains Lazarsfeld’s two-step flow theory—how media messages reach opinion leaders first and then sp
Chemistry
A supercritical fluid is a substance pushed past its critical point, where the line between liquid and gas disappears. This article explains what the critical point means, the flui
General knowledge
This time, I would like to prepare material on eye movements during reading and speed reading. Here, eye movements during reading refer to the movements the eyes make as they follo
Information technology
Kerckhoffs's Principle holds that a cryptographic system should stay secure even if everything except the key is known. This piece covers Auguste Kerckhoffs's 1883 “La Cryptographi
Education
In traditional education, we always see the same scene. The teacher explains diligently at the blackboard, while students sit at their desks, busy taking notes. When class ends, th
Information technology
Considered one of the innovations of modern technology, 3D printers are bringing major changes to industries ranging from manufacturing to medicine, education, and art. 3D printers
General knowledge
Major accidents rarely happen “suddenly”; they are usually preceded by many small warning signs. This article explains Heinrich’s Law (the 1:29:300 rule), its domino theory, later
