Reference Terms
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Random variable
A random variable is a mathematical function that maps outcomes of random experiments to numbers.
Note: The above text is excerpted from the Wikipedia article "Random variable", which has been released under the GNU Free Documentation License.
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April 1, 2025
Mar. 27, 2025 — Most haptic devices only deliver feedback as simple vibrations. New device applies dynamic forces in any direction to simulate a more realistic sense of touch. Small, lightweight device can enhance virtual reality, help individuals with visual ...
Mar. 25, 2025 — This a robot can walk, without electronics, and only with the addition of a cartridge of compressed gas, right off the 3D-printer. It can also be printed in one go, from one ...
Mar. 19, 2025 — A leaping robot could have application in search and rescue, construction, even forest monitoring. But how do you design a robot to stick a landing on a branch or pipe? Biologists worked with robot designers to discover how squirrels do it, and used ...
Mar. 12, 2025 — Researchers have announced the creation of the first operating system designed for quantum networks: QNodeOS. The research marks a major step forward in transforming quantum networking from a theoretical concept to a practical technology that could ...
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Apr. 1, 2025 — Self-healing coatings are advanced materials that can repair damage, such as scratches and cracks on their own. Researchers have developed an efficient method for preparing self-healing films ...
Mar. 31, 2025 — AI mental health apps may offer a cheap and accessible way to fill the gaps in the overstretched U.S. mental health care system, but ethics experts warn that we need to be thoughtful about how we use ...
Mar. 31, 2025 — Bioelectronic devices, neural interfaces, biosensors and AI hardware are now easier to make thanks to a streamlined method for fabricating a key ...
Mar. 31, 2025 — Researchers have developed new AI models that can vastly improve accuracy and discovery within protein science. Potentially, the models will assist the medical sciences in overcoming present ...
Mar. 30, 2025 — Be it sensors, cameras, or displays: Metasurfaces have the potential to fundamentally improve optical systems in our everyday lives. By controlling light more precisely, they drive compact, ...
Mar. 28, 2025 — Scientists have long sought to unravel the mysteries of strange metals -- materials that defy conventional rules of electricity and magnetism. Now, a team of physicists has made a breakthrough in ...
Mar. 27, 2025 — Researchers have conducted groundbreaking research on memristor-based brain-computer interfaces (BCIs). This research presents an innovative approach for implementing energy-efficient adaptive ...
Mar. 27, 2025 — People with dementia can enjoy productive and rewarding working lives in the digital era, contrary to the widespread stereotype that dementia is incompatible with the use of modern technology, ...
Mar. 27, 2025 — A new method significantly advances 3D imaging of reflective surfaces. The approach integrates techniques known from high-precision optical 3D ...
Mar. 27, 2025 — Researchers conducted the first clinical trial of an AI-powered therapy chatbot and found that, on average, people with diagnosed mental disorders experienced clinically significant improvements in ...