You are browsing the English interface. Articles without a published translation are clearly marked and open in Korean.
810 articles found
General knowledge
CCL (Creative Commons License) lets creators state in advance how their work may be used, so others can use it without asking for permission each time. This article explains the co
Social welfare
The National Pension system has firmly established itself as an important social security system that provides security in old age in modern society. It provides people with an eco
Statistics
Standard deviation plays an important role in describing data variability and is an essential concept used in a wide range of practical situations. In data analysis and decision-ma
Food & nutrition
Rancidity is the process in which the fats in food break down by reacting with oxygen, water, or enzymes, producing unpleasant smells and flavors and lowering quality. We look at i
Food & nutrition
Carbohydrates are one of the indispensable nutrients in our daily diet and are a major source of energy. Carbohydrates are divided into simple and complex carbohydrates, each of wh
Statistics
The Will Rogers phenomenon is when moving some members from one group to another raises the averages of both groups. This article covers where the name came from and how it works,
Chemistry
A few drops of lemon juice make water sour, so why does the pH of blood stay the same? This article explains buffer solutions, whose pH barely changes even when acid or base is add
Earth science
Why does solid ground turn soft and flow like water during an earthquake? This article explains soil liquefaction, in which water-saturated sandy ground behaves like a liquid, cove
Film & media
How are the emotions and immersion we experience when watching films or video content created? They may come from an actor shedding tears on screen or from majestic music. Yet the
Journalism & communication
Parasocial interaction is the one-sided sense of face-to-face closeness we feel with media figures who don’t know us. This piece covers Horton and Wohl’s 1956 concept, the differen
Psychology
Why do unfinished tasks linger in our minds longer than completed ones? This article explains the Zeigarnik Effect: its origins, how memory and psychological tension work together,
Economics
Engel's law is the empirical rule that as income rises, the share of total spending that goes to food steadily falls. This piece covers the basic concept, the Engel coefficient and
