Lifeboat Foundation

The specific type of TCP attack used in the recent spate of DDoS efforts were TCP SYN-ACK reflection attacks.

“The catastrophic weather conditions mean that things can change very quickly,” she told reporters in Sydney.

Catastrophic fire danger has been declared for Sydney and the Hunter Valley region to the north today with severe and extreme danger across vast tracts of the rest of the state.

The week-long declaration of a state of emergency gives the Rural Fire Service sweeping powers.

This week’s cover shows Nature’s publication record over 150 years. Explore the growing web of collaboration and science in an interactive graphic here: https://go.nature.com/32wf2SB

https://youtube.com/watch?v=VKEY8ZKIw2E

Gateway Foundation is working on creating orbital assembly line and block construction systems. They would want to create a 244 meter long and 71 meter wide Mars Colonial Transport.

An important aspect of human memory is our ability to conjure specific moments from the vast array of experiences that have occurred in any given setting. For example, if asked to recommend a tourist itinerary for a city you have visited many times, your brain somehow enables you to selectively recall and distinguish specific memories from your different trips to provide an answer.

Studies have shown that declarative memory—the kind of memory you can consciously recall like your home address or your mother’s name—relies on healthy medial temporal lobe structures in the brain, including the hippocampus and entorhinal cortex (EC). These regions are also important for spatial cognition, demonstrated by the Nobel-Prize-winning discovery of “place cells” and “grid cells” in these regions—neurons that activate to represent specific locations in the environment during navigation (akin to a GPS). However, it has not been clear if or how this “spatial map” in the brain relates to a person’s memory of events at those locations, and how neuronal activity in these regions enables us to target a particular memory for retrieval among related experiences.

A team led by neuroengineers at Columbia Engineering has found the first evidence that individual neurons in the human brain target specific memories during recall. They studied recordings in neurosurgical patients who had electrodes implanted in their brains and examined how the patients’ brain signals corresponded to their behavior while performing a virtual-reality (VR) object-location memory task. The researchers identified “memory-trace cells” whose activity was spatially tuned to the location where subjects remembered encountering specific objects. The study is published today in Nature Neuroscience.

Spaceflight company SpaceX is set to launch 60 communications satellites into orbit today as the basis for a web of spacecraft designed to provide global Internet access. But many astronomers worry that such ‘megaconstellations’ — which are also planned by other companies that could launch tens of thousands of satellites in the coming years — might interfere with crucial observations of the Universe. They fear that megaconstellations could disrupt radio frequencies used for astronomical observation, create bright streaks in the night sky and increase congestion in orbit, raising the risk of collisions.

Researchers fear that plans to send tens of thousands of communications satellites into orbit will disrupt scientific observations of the Universe.

Q: What did Mercury say when it was asked to line up between Earth and the Sun?

A: I’ll pass! 😎

We were in for a rare treat during today’s #MercuryTransit, which only happens about 13 times a century! Revel in the views captured our NASA Sun Science-observing satellite in a variety of a variety of wavelengths of light in the extreme ultraviolet: https://go.nasa.gov/2NF6tQQ

The U.S. military is preparing for the age of AI and algorithmic warfare, and it’s getting help from tech giants like Facebook, Google, and Microsoft.

Here we hypothesize that observing the visual stimuli of different categories trigger distinct brain states that can be decoded from noninvasive EEG recordings. We introduce an effective closed-loop BCI system that reconstructs the observed or imagined stimuli images from the co-occurring brain wave parameters. The reconstructed images are presented to the subject as a visual feedback. The developed system is applicable to training BCI-naïve subjects because of the user-friendly and intuitive way the visual patterns are employed to modify the brain states.

Currently, the usage of EEG-based BCIs in assistive and rehabilitation devices mostly comes down to the following scenarios: