科學 訊息

The Crystal Palace was built so quickly thanks to first use of a standard screw thread, researchers find
2024-09-16 18:11:55
New research has answered the mystery of how the Crystal Palace in London, which at the time was the world's largest building, was constructed in only 190 days.
Shared carbon capture networks would cut costs, reduce disruptions to local communities
2024-09-16 18:11:54
Sharing infrastructure for transporting and storing captured carbon dioxide (CO2) emissions across multiple industrial facilities could cut costs by more than 60% and reduce pipeline buildout by more than 75% in Louisiana, according to new research led by engineers at the Andlinger Center for Energy and the Environment.
The 'Arrow of Time' effect: LLMs are better at predicting what comes next than what came before
2024-09-16 18:11:54
Researchers have found that AI large language models, like GPT-4, are better at predicting what comes next than what came before in a sentence. This "Arrow of Time" effect could reshape our understanding of the structure of natural language, and the way these models understand it.
More rooftop solar in cities would help solve NZ's energy crisis—and build disaster resilience
2024-09-16 18:11:54
New Zealand's current electricity supply crisis requires immediate solutions.
Deep learning drives dynamic autofocus in grayscale images
2024-09-16 18:11:53
Researchers from the Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences have developed a novel autofocus method that harnesses the power of deep learning to dynamically select regions of interest in grayscale images. The study was published in the journal Sensors.
AI is 'accelerating the climate crisis,' expert warns
2024-09-15 09:05:26
If you care about the environment, think twice about using AI. Generative artificial intelligence uses 30 times more energy than a traditional search engine, warns researcher Sasha Luccioni, on a mission to raise awareness about the environmental impact of the hot new technology.
New research could make weird AI images a thing of the past
2024-09-15 09:05:25
Generative artificial intelligence (AI) has notoriously struggled to create consistent images, often getting details like fingers and facial symmetry wrong. Moreover, these models can completely fail when prompted to generate images at different image sizes and resolutions.
熱帶風暴伊萊安娜在加州灣南部移動時帶來暴雨,淹沒道路
2024-09-15 04:14:37
熱帶風暴伊萊安娜在墨西哥錫那羅亞海岸登陸。
Record-setting Polaris Dawn crew aims for early Sunday splashdown in Gulf of Mexico
2024-09-14 22:48:03
Splashdown northwest of Key West, Florida, will close out a mission highlighted by the first non-government civilian spacewalk.
研究人員開發出可擴展的方法來整合超快 2D 快閃記憶體
2024-09-14 15:20:54
旨在處理大量資料的人工智慧 (AI) 工具的廣泛使用增加了對性能更好的儲存設備的需求。有助於滿足人工智慧運算需求的資料儲存解決方案包括所謂的高頻寬內存,這些技術可以增加電腦處理器的內存頻寬,加速資料傳輸並降低功耗。
Harnessing the power of porosity: Advancing aqueous zinc-ion batteries and large-scale energy storage
2024-09-14 00:28:24
As the global demand for energy storage solutions grows, the limitations of current lithium-ion batteries, such as safety concerns and high costs, have driven the exploration of alternative technologies. Aqueous zinc-ion batteries (AZIBs) have emerged as a promising candidate due to their inherent safety, cost-effectiveness, and environmental sustainability. However, challenges like zinc dendrite growth continue to hinder their widespread adoption. Due to these challenges, there is a pressing need to delve deeper into innovative solutions to improve AZIB performance.
Housing could help us improve our well-being and reach net zero by 2040, scientist says
2024-09-14 00:28:24
EPFL scientist Sascha Nick has outlined a completely new scenario for what housing and neighborhoods might look like in Switzerland in the coming decades. His recommendations would put the country on track to meet its net-zero target while supporting the well-being of residents and communities.
Enhancing AI model U-Net for ocean remote sensing
2024-09-13 22:43:28
U-Net, a convolutional neural network (CNN) originally intended for medical use, can potentially make waves in the ocean remote sensing field
Urban heating and cooling to play substantial role in future energy demand under climate change
2024-09-13 22:43:28
Existing global energy projections underestimate the impact of climate change on urban heating and cooling systems by roughly 50% by 2099 if greenhouse gas emissions remain high, researchers report. This disparity could profoundly affect critical sustainable energy planning for the future.
New method could decrease number of satellites needed for global coverage
2024-09-13 18:54:39
Low-orbit satellites could soon offer millions of people worldwide access to high-speed communications, but the satellites' potential has been stymied by a technological limitation—their antenna arrays can only manage one user at a time.
Producing future low-cost, aqueous zinc-ion batteries for sustainable, large-scale energy storage
2024-09-13 15:28:50
With global demand for lithium-ion batteries fast depleting reserves of raw materials, experts are seeking safe, affordable and reliable alternatives for rechargeable batteries.
Folded or cut, researchers design a lithium-sulfur battery that keeps going
2024-09-13 14:02:09
Most rechargeable batteries that power portable devices, such as toys, handheld vacuums and e-bikes, use lithium-ion technology. But these batteries can have short lifetimes and may catch fire when damaged.
Transparent solar cells can directly supply energy from glass surfaces
2024-09-13 13:33:18
A technology that can directly charge a battery from a smartphone screen has emerged. A research team affiliated with UNIST has unveiled a method of supplying energy directly from glass of buildings, cars, and mobile devices through transparent solar cells. The study is published in PNAS.
Dielectric protocol leads to high energy density in Li-metal pouch cells
2024-09-13 11:36:23
The interface between electrodes and electrolytes largely contributes to the efficiency with which batteries convert energy. In recent years, many efforts aimed at developing better performing batteries have focused on tailoring the electrode/electrolyte interface to boost the energy density of rechargeable batteries, particularly lithium-metal batteries (LMBs).
Astronaut Nicole Stott Says Billionaire Spacewalk Is Good For Humanity, Don't Be Cynical
2024-09-13 01:29:12
Astronaut Nicole Stott says billionaire doing a spacewalk is a good thing for humankind in the long run, helps us get to Mars.

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