Business administration
The PDCA Cycle for Achieving Goals
This time, I would like to prepare material on the PDCA cycle for achieving goals and improving organizations. PDCA (plan–do–check–act) is a method for managing production, quality
Articles to explore
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810 articles found
Robotics
Reducing Error on the Way to the Goal: Proportional-Integral-Derivative Control
How do robot arms and drones stop right at their target? This article covers the history of PID control starting with Minorsky, the roles of the proportional, integral and derivati
Chemistry
A Solid That Vanishes Without Melting: Sublimation
Sublimation is the process in which a solid turns directly into a gas without passing through the liquid state. This article covers the principle and conditions behind it, everyday
Statistics
The Illusion That Next Time Will Be Different: The Gambler's Fallacy
If a coin lands heads five times in a row, will the next toss be tails? This article explains the gambler's fallacy, the belief that past results change what comes next, along with
Statistics
Understanding Probability Distributions and Practical Methods of Analysis
Probability distributions are a core concept in statistics and data science. This article covers their basic concepts and history, the main types and their characteristics, their m
Earth science
An Invisible Lid Over the Sky: Temperature Inversion
Why does a layer of air form that gets warmer, not colder, with height? This article explains how temperature inversions form and their types, their effects on fine dust, fog, and
Statistics
Confidence Level and Confidence Interval: A Key Guide to Statistical Interpretation
What confidence levels and confidence intervals mean and how they differ, how a confidence interval is calculated from the sample mean, standard error, and critical value, how they
Business administration
Marketing Strategies Through the Lens of the Product Life Cycle
This time, I would like to prepare material on the product life cycle, which describes a product's life from its launch through growth and decline. Understanding it can help busine
Social welfare
Introduction to the National Basic Livelihood Security System: Recipient Eligibility and Benefits
South Korea operates the National Basic Livelihood Security System to ensure that all citizens can live with dignity. The National Basic Livelihood Security System is a social safe
Library & information science
Why Are Prolific Authors So Rare? Lotka's Law of Scientific Productivity
Why do a small number of researchers write so many papers? This article covers the inverse square law Lotka identified in 1926, its uses in bibliometrics, and its limits, such as e
Information technology
Slowing Down Faster Than Hardware Speeds Up: Wirth’s Law
Wirth’s Law is the rule of thumb that software gets slower faster than hardware gets faster. This piece covers where it came from, why software keeps getting heavier, examples arou
Robotics
From Fingertip Goals Back to Joint Angles: Inverse Kinematics
Inverse kinematics finds the joint angles that place a robot’s end effector at a desired pose. This piece covers forward versus inverse kinematics, multiple or missing solutions an