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810 articles found
Business administration
The principal-agent problem is the conflict that arises when the interests of the person who hands over a job and the person who takes it on diverge. We look at why it happens, how
Library & information science
This time, we will discuss digital collections, which can be considered a component of the broader concept of a digital library. Digital collections are the core of a digital libra
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
Robotics
Grey Walter’s Tortoises were small robots built in the late 1940s by British neurophysiologist William Grey Walter that explored their surroundings on their own using just two vacu
Social welfare
What community welfare is, why it matters, its three types (preventive, supportive, and developmental), and five examples of community welfare services from regions across Korea.
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
Statistics
Reliability and validity always come up when studying surveys in statistics, marketing, or opinion polling. This guide uses two illustrated examples, shooting and makeup, to make t
Journalism & communication
Inoculation theory holds that people who meet weak counterarguments in advance and practice refuting them resist stronger persuasion later. This piece covers William J. McGuire’s 1
Psychology
Depression is emerging as an important issue in society, and many people suffer from this condition. Depression is a serious illness that goes beyond a simple low mood, involves ps
Logistics
The hub-and-spoke model gathers cargo from many origins at a central hub, sorts it by destination, and sends it back out to each region. This piece covers how it compares with poin
Statistics
Public opinion polls are powerful tools for collecting and analyzing our thoughts and opinions in modern society. They play an important role across politics, the economy, and soci
Robotics
A collaborative robot, or cobot, is a robot designed to share a workspace with people and to reduce its own force and speed when it comes close or makes contact, so no one gets hur
