PufferBot: A flying robot with an expandable body

Researchers at University of Colorado Boulder's ATLAS Institute and University of Calgary have recently developed an actuated, expandable structure that can be used to fabricate shape-changing aerial robots. In a paper set ...

Energy & Green Tech

Reducing windpower's bad vibes

Windpower has come to the fore as a major source of renewable energy, with "turbine farms" springing up across the land and across the oceans. Of course, any new technology has its problems and its detractors, but technological ...

Machine learning & AI

Computers excel in chemistry class

Machine learning models can rapidly and accurately estimate key chemical parameters related to molecular reactivity.


A biomimetic robotic finger created using 3-D printing

Humans are innately capable of performing complex movements with their hands via the articulation of their endoskeletal structure. These movements are made possible by ligaments and tendons that are elastically connected ...

Machine learning & AI

How AI systems use Mad Libs to teach themselves grammar

Imagine you're training a computer with a solid vocabulary and a basic knowledge about parts of speech. How would it understand this sentence: "The chef who ran to the store was out of food."

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Structure is a fundamental and sometimes intangible notion covering the recognition, observation, nature, and stability of patterns and relationships of entities. From a child's verbal description of a snowflake, to the detailed scientific analysis of the properties of magnetic fields, the concept of structure is an essential foundation of nearly every mode of inquiry and discovery in science, philosophy, and art.

A structure defines what a system is made of. It is a configuration of items. It is a collection of inter-related components or services. The structure may be a hierarchy (a cascade of one-to-many relationships) or a network featuring many-to-many relationships.

This text uses material from Wikipedia, licensed under CC BY-SA