Tag

Compression

All articles tagged with #compression

technology1 year ago

"Google Photos to Bring Storage-Saving Web Tool to Mobile Devices"

An APK teardown of the latest version of Google Photos suggests that Android users may soon be able to compress already-stored media, saving it in a permanently reduced size to free up storage space. This feature, previously only available on the web, would allow users to compress full-resolution photos and videos once per day, with no option to restore them to their original quality.

science-and-technology1 year ago

"Squeezing Diamonds to Create Super-Hard 'Super-Diamonds': A Breakthrough in Material Science"

Physicists have used quantum-accurate molecular-dynamics simulations to discover a way to transform diamonds into an even harder material, known as the eight-atom body-centred cubic (BC8) phase, which is 30% more resistant to compression than diamonds. This unusual structure has only been observed in silicon and germanium on Earth, but it is believed to exist in highly-pressurized environments inside exoplanets. However, attempts to synthesize the BC8 phase have been unsuccessful due to the narrow high-pressure, high-temperature conditions required for its formation.

science-and-technology1 year ago

"Super-Diamonds: The Next Hardest Material in the Universe?"

Physicists have used quantum-accurate molecular-dynamics simulations to discover a way to transform diamonds into an even harder material, known as the eight-atom body-centred cubic (BC8) phase, which is 30% more resistant to compression than diamonds. This unusual structure has only been observed in silicon and germanium on Earth, but it is believed to exist in the highly-pressurized environments inside exoplanets. However, attempts to synthesize it have been unsuccessful due to the narrow high-pressure, high-temperature conditions required.

science-and-technology1 year ago

"Supercomputer Simulates Creation of Tougher 'Super Diamonds' Than Natural Diamonds"

Physicists have used quantum-accurate molecular-dynamics simulations to discover a way to transform diamonds into an even harder material, known as the eight-atom body-centred cubic (BC8) phase, which is 30% more resistant to compression than diamonds. This unusual structure has only been observed in silicon and germanium on Earth, but it is believed to exist in highly-pressurized environments inside exoplanets. However, attempts to synthesize it have been unsuccessful due to the narrow high-pressure, high-temperature conditions required.

science-and-technology1 year ago

"Creating Super-Diamonds: Unveiling the Synthesis Process"

Physicists have used simulations to discover a way to compress diamonds into an even harder material, known as the eight-atom body-centred cubic (BC8) phase, which is 30% more resistant to compression than diamonds. This structure, observed in silicon and germanium, has potential applications in highly-pressurized environments, such as inside exoplanets. However, synthesizing the BC8 phase has proven challenging due to the narrow range of temperature and pressure under which it can occur.

science-and-technology1 year ago

"Creating Super Diamonds: Unveiling the Path to Even Harder Materials"

Physicists from the US and Sweden have simulated a way to transform diamonds into an even harder material, known as the eight-atom body-centred cubic (BC8) phase, which is believed to be 30% more resistant to compression than diamonds. This unusual structure has only been observed in silicon and germanium on Earth, but it is theorized to exist in highly-pressurized environments inside exoplanets. However, attempts to synthesize this material have been unsuccessful due to the narrow range of temperature and pressure under which the BC8 phase can occur.

science-and-technology1 year ago

"Unveiling the Secrets of Creating Super Diamonds with Supercomputers"

Physicists have used quantum-accurate molecular-dynamics simulations to discover a way to transform diamonds into an even harder material, known as the eight-atom body-centred cubic (BC8) phase, which is 30% more resistant to compression than diamonds. This unusual structure has only been observed in silicon and germanium on Earth, but it is believed to exist in the highly-pressurized environments inside exoplanets. However, attempts to synthesize this material have been unsuccessful due to the narrow high-pressure, high-temperature conditions required for its formation.

technology2 years ago

"Enhancing Wireless VR Latency: The Impact of Wi-Fi 7 on Bandwidth Efficiency and Device Compatibility"

Despite the recent release of Wi-Fi 7 and its promises of near-zero latency for wireless VR, the actual cause of latency in popular wireless VR is the heavy compression of frames by the GPU's video encoder and the time it takes for the decoder in the headset's chipset to decompress them. While Wi-Fi 7 may bring marginal improvements to the wireless VR experience, its theoretical maximum bandwidth is not likely to be achieved in the real world, making it insufficient for handling raw frames for high-resolution headsets. Meaningful reductions in wireless VR latency will come from improved encoders and decoders, rather than Wi-Fi 7.

artificial-intelligence2 years ago

Study Finds AI Language Models Surpass PNG and FLAC in Lossless Compression

A research paper by DeepMind reveals that their large language model (LLM) called Chinchilla 70B can achieve better lossless compression than traditional algorithms designed for image and audio compression. The LLM compressed image patches from the ImageNet database to 43.4% of their original size, surpassing the PNG algorithm at 58.5%. For audio, Chinchilla compressed samples from the LibriSpeech dataset to 16.4% of their raw size, outperforming FLAC compression at 30.3%. The study suggests that language models like Chinchilla can be effective tools for compressing various types of data, opening up new possibilities for machine learning models beyond text prediction and writing. The relationship between compression and intelligence is an ongoing area of research and debate.

mobile-security-malware2 years ago

Android Malware Apps Evade Detection with Stealthy APK Compression

Threat actors are using Android Package (APK) files with unsupported compression methods to evade malware analysis. Over 3,300 artifacts have been found using this technique, with 71 samples able to be loaded onto the operating system without issues. These apps were likely distributed through untrusted app stores or social engineering tactics. The use of unsupported compression methods limits decompilation and analysis, making it difficult to detect and analyze the malware. Additionally, malware authors are deliberately corrupting APK files to trigger crashes on analysis tools. This discovery follows Google's recent revelation about threat actors using versioning to bypass malware detection on the Play Store.

physics2 years ago

The Emergence of Order in Flexible Beam Clusters.

A study on the behavior of compressed elastic beams shows that the emergence of order is determined by geometry, not complex forces. The researchers fixed flexible plastic beams vertically between two horizontal plates and squeezed them together, causing the beams to bend and come into contact with one another. The order increased with compression and depended mainly on the ratio of the uncompressed beam height to the compressed beam height. The researchers also observed a set of phenomena that seemed to govern the emergence of order, including "clump-hole annihilation." The results could be useful for designing flexible materials and understanding interactions among flexible structures in nature.