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810 articles found
Logistics
What is the secret that lets us buy cosmetics from overseas with a single click online and put imported bananas on our breakfast tables? It is all thanks to a vast logistics system
General knowledge
Amara's Law says we tend to overestimate the effect of a new technology in the short run and underestimate it in the long run. This article covers where the saying came from, why t
Business administration
This time, I would like to put together material on marketing 4C, a marketing concept in business administration. The existing marketing mix, known as 4P, had the traditional 4 sta
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
Statistics
In this session, I would like to prepare material on how to create a questionnaire and the precautions to take. Generally, a questionnaire is a set of questions that a researcher u
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
Robotics
Why can computers beat chess champions yet struggle to pick up a cup? This article covers the origins of Moravec's paradox, its evolutionary explanation, examples from robotics, an
Social welfare
A conditional cash transfer gives money to poor households only if they meet set conditions, such as keeping children in school or getting regular health checkups. This article cov
Information technology
How did the early internet keep working despite small differences between implementations? This article covers where Postel's Law (the Robustness Principle) came from, why it matte
Physics
Why does a drop of water skate across a very hot pan and last longer than on a merely warm one? This article explains the Leidenfrost effect, from the vapor cushion that lifts the
Statistics
Many statistical techniques are used in data analysis, and the t-test is a prominent method frequently used in data analysis and research to test differences between two groups. 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
