Menu

Blog

Archive for the ‘mapping’ category

Nov 9, 2024

Study shows bats have acoustic cognitive maps

Posted by in categories: habitats, mapping, neuroscience

This finding, published in Science, was demonstrated by researchers from the Max Planck Institute of Animal Behavior, the Cluster of Excellence Center for the Advanced Study of Collective Behavior at the University of Konstanz, Germany, Tel Aviv University, and the Hebrew University of Jerusalem, Israel.

Would you be able to instantly recognize your location and find your way home from any random point within a three-kilometer radius, in complete darkness, with only a flashlight to guide you?

Continue reading “Study shows bats have acoustic cognitive maps” »

Nov 9, 2024

‘Giant Arc’ Stretching 3.3 Billion Light-years Across The Cosmos Shouldn’t Exist

Posted by in categories: cosmology, mapping

A newly discovered crescent of galaxies spanning 3.3 billion light-years is one of the world’s largest known structures, challenging some of astronomers’ most fundamental assumptions about the universe.

The epic arrangement known as the Giant Arc is made up of galaxies, galaxy clusters, and a lot of gas and dust. It is located 9.2 billion light-years away and stretches across roughly a 15th of the observable universe.

Its discovery was “serendipitous,” according to Alexia Lopez, a doctoral candidate in cosmology at the University of Central Lancashire (UCLan) in the United Kingdom. Lopez was creating maps of things in the night sky using light from approximately 120,000 quasars, which are distant brilliant cores of galaxies where supermassive black holes consume material and produce energy.

Nov 6, 2024

A cellular basis for mapping behavioural structure

Posted by in categories: mapping, neuroscience

A published today https://nature.com/articles/s41586-024-08145-x reveals brain cells can form a coordinate system for our behaviours.


Mice generalize complex task structures by using neurons in the medial frontal cortex that encode progress to task goals and embed behavioural sequences.

Nov 2, 2024

California’s Salton Sea receding at greater rate according to balloon mapping study

Posted by in categories: food, mapping, policy

The Salton Sea, California’s largest lake by surface area, is experiencing an increasing rate of shoreline retreat following a policy change that shifted more water from the Colorado River to San Diego, according to a newly published study. The resulting dried lakebed is creating more polluted dust from dried agricultural runoff that affects nearby communities, researchers said.

Oct 27, 2024

Lunar Mission Data Analysis Finds Widespread Evidence of Ice Deposits

Posted by in categories: energy, mapping

Deposits of ice in lunar dust and rock (regolith) are more extensive than previously thought, according to a new analysis of data from NASA’s LRO (Lunar Reconnaissance Orbiter) mission. Ice would be a valuable resource for future lunar expeditions. Water could be used for radiation protection and supporting human explorers, or broken into its hydrogen and oxygen components to make rocket fuel, energy, and breathable air.

Prior studies found signs of ice in the larger permanently shadowed regions (PSRs) near the lunar South Pole, including areas within Cabeus, Haworth, Shoemaker and Faustini craters. In the new work, “We find that there is widespread evidence of water ice within PSRs outside the South Pole, towards at least 77 degrees south latitude,” said Dr. Timothy P. McClanahan of NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and lead author of a paper on this research published October 2 in The Planetary Science Journal.

The study further aids lunar mission planners by providing maps and identifying the surface characteristics that show where ice is likely and less likely to be found, with evidence for why that should be. “Our model and analysis show that greatest ice concentrations are expected to occur near the PSRs’ coldest locations below 75 Kelvin (−198°C or −325°F) and near the base of the PSRs’ poleward-facing slopes,” said McClanahan.

Oct 24, 2024

Euclid telescope reveals 1st section of largest-ever 3D map of the universe — and there’s still 99% to go

Posted by in categories: mapping, space

The first piece of the Euclid space telescope’s map of the universe is crammed with 14 million galaxies and 100 million sources of light. The mapping project is now 1% done.

Oct 22, 2024

Charoen Thani Hotel, Khon Kaen. · 260 Sri Chant Rd, Nai Mueang, Mueang Khon Kaen District, Khon Kaen 40000, Thailand

Posted by in categories: business, lifeboat, mapping

The name of the conference will be lifeboat foundation conference for polymaths futuristics and visionaries.

The place will be this hotel.

https://maps.app.goo.gl/sdG14SRcrJEJGYGH6

Continue reading “Charoen Thani Hotel, Khon Kaen. · 260 Sri Chant Rd, Nai Mueang, Mueang Khon Kaen District, Khon Kaen 40000, Thailand” »

Oct 22, 2024

Octopus arm anatomy, molecular makeup revealed in new maps

Posted by in categories: mapping, neuroscience

Octopus arms may literally have a mind of their own. Each limb contains its own version of a spinal cord, called an axial nerve cord, and these cords collectively harbor most of the animal’s neurons.


The datasets provide “a very nice reference” for future functional studies.

Oct 21, 2024

JoshEngels/SAE-Dark-Matter: Code for our paper “Decomposing The Dark Matter of Sparse Autoencoders”

Posted by in categories: cosmology, mapping, robotics/AI

Decomposing the dark matter of sparse autoencoders.

Joshua Engels, Logan Riggs, Max Tegmark MIT 2024 https://arxiv.org/abs/2410.

On mapping concepts in artificial neural networks with sparse autoencoders: we find that map errors exhibit…

Continue reading “JoshEngels/SAE-Dark-Matter: Code for our paper ‘Decomposing The Dark Matter of Sparse Autoencoders’” »

Oct 8, 2024

Magnetic Gyrations Are Excited by Strain

Posted by in categories: computing, mapping, particle physics

Imposing time-dependent strain on a magnetic disk induces vortex dynamics and offers a path toward energy-efficient spintronic devices.

Nanoscopic magnetic vortices made from electron spins could be used in spintronic computers (see Research News: 3D Magnetism Maps Reveal Exotic Topologies). To this end, researchers need an energy-efficient way to excite these vortices into a so-called gyrotropic mode—an orbital motion of the vortex core around the central point. The direction of this orbital motion would determine which of two binary states the vortex represents. Vadym Iurchuk at the Helmholtz-Zentrum Dresden-Rossendorf, Germany, and his colleagues have now demonstrated such a method by imposing a time-varying strain on a magnetic material [1].

The excitation of gyration dynamics by an oscillating strain was suggested by a separate team in 2015 [2]. The idea involves depositing a magnetic film, in which magnetic vortices form spontaneously, on a piezoelectric substrate. Applying an alternating voltage to the substrate transfers a time-varying mechanical strain to the film, dynamically perturbing its magnetic texture. This perturbation displaces a vortex core from its equilibrium position, thereby exciting the gyrotropic mode.

Page 1 of 5412345678Last