Economics
Same Product, Different Price: Price Discrimination
Price discrimination is the strategy of selling the same product or service at different prices to different groups of consumers. This article covers the concept, the first-, secon
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Information technology
Less Power as They Shrank: Dennard Scaling
Dennard scaling is the semiconductor scaling rule that if transistors are made smaller while voltage is lowered by the same ratio, the power used by a given area of a chip stays th
Education
The Secret of Learning That Lasts: Desirable Difficulty
Why is what we learn easily so easily forgotten? This article explains desirable difficulty, as described by Robert Bjork, covering its meaning and origins, learning methods such a
Education
Words and Pictures Stay Together: Dual Coding Theory
Dual Coding Theory holds that the mind has separate verbal and nonverbal systems, and that linking words with pictures helps us understand better and remember longer. This piece co
Social welfare
The Four Faces of “Need”: Bradshaw’s Taxonomy of Social Need
When we say someone has a “need,” we can mean four different things. This article walks through Bradshaw’s Taxonomy of Social Need: normative, felt, expressed and comparative need,
Economics
Market Equilibrium and Price Changes: The Core Principles of Supply and Demand
The basic concepts of supply and demand, how market equilibrium and the equilibrium price form, how price changes affect quantity demanded and supplied, what shifts the demand and
Library & information science
A Complete Guide to the Korean Decimal Classification (KDC): How Do Libraries Classify Books?
A handy reference to the Korean Decimal Classification (KDC, 6th edition) used in Korean public and school libraries: how main classes, divisions, sections, and subdivisions work,
General knowledge
Left Brain vs. Right Brain: Functions and Traits Compared (Left-Brained and Right-Brained People)
What does it mean to be “left-brained” or “right-brained”? This article explains how the two hemispheres divide their roles, explains their cooperation, and discusses the limits of
Psychology
The Science of Focus: Exploring Ways to Improve Concentration Through Psychology
In everyday life, we face countless tasks and challenges that require concentration. Concentration plays a very important role in learning, work, and achieving personal goals. In m
Physics
Plasma Technology: Boundless Innovation and Possibilities
Plasma is the 4th state of matter, following solids, liquids, and gases, and is a unique state with electrical and high-temperature characteristics. These characteristics give plas
Psychology
A Balance the Mind Creates on Its Own: Cognitive Dissonance
Cognitive dissonance is the psychological discomfort that arises when contradictory beliefs, attitudes, or behaviors exist at the same time, together with the automatic process of
Design
Core Elements and Essential Principles of Graphic Design
Graphic design goes beyond simply creating visually appealing images: it plays an important role in communicating clear, powerful messages and maximizing brand value. Today's desig