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780 articles found
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
Social welfare
Case management is a social work practice that coordinates resources through assessment, planning, linking, monitoring, and evaluation so that people with complex needs can receive
Business administration
An introduction to the blue ocean and red ocean, two basic concepts for understanding market environments, plus the purple ocean that combines them, explained through examples from
Earth science
The phenomenon in which an asphalt road you walk along every day or a yard in a quiet residential neighborhood suddenly collapses into an enormous hole is called a sinkhole. You ha
Film & media
Video technology has advanced noticeably over time, and screen scanning (Scanning) technology in particular has greatly improved video resolution and quality. Screen scanning refer
Library & information science
Information foraging theory, developed by Peter Pirolli and Stuart Card at Xerox PARC, explains how people search for information the way animals hunt for food. This article covers
Education
Transfer of learning is the way earlier knowledge or skills affect learning and problem solving in new situations. This piece covers the concept and its origins, the main types of
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
Journalism & communication
A filter bubble forms when the personalization algorithms of search engines and social media show us only the information we are likely to like, trapping us in a bubble of content
Economics
The winner’s curse is when the person who most overestimates an item’s uncertain value wins the auction and overpays. This piece covers its origin in Capen, Clapp and Campbell’s 19
Chemistry
Why does salted cabbage release its water overnight? This article covers what osmosis is, the three factors that drive it, everyday examples, and reverse osmosis, the technology th
Earth science
Snowball Earth is the hypothesis that Earth’s surface was once almost entirely covered in ice during the Cryogenian Period. This article explains how the idea arose, the ice-albedo
