科学 新闻

Forty percent of UK greenhouse gas emissions come from households, so the sustainable construction and everyday running of our homes could play a major role in achieving a low-carbon society.

全世界有超过 20 亿人无法获得安全、未受污染的饮用水。其中约 4.18 亿人生活在非洲国家。

When you ask a rideshare app to find you a car, the company's computers get to work. They know you want to reach your destination quickly. They know you're not the only user who needs a ride. And they know drivers want to minimize idle time by picking up someone nearby. The computer's job, says Cold Spring Harbor Laboratory Associate Professor Saket Navlakha, is to pair drivers with riders in a way that maximizes everyone's happiness.

Tunable diode laser absorption spectroscopy (TDLAS) technology holds significant potential for greenhouse gas detection, due to its advantages of non-contact, real-time measurements. However, the technical bottleneck of cross-interference in gas absorption spectra has significantly constrained the development and application of this technique in simultaneous measurement of multi-component gases.

Research conducted by UCL researchers reveals and explains the links between vapor depression shape and spatter dynamics during LPBF under various industry-relevant processing conditions.

Artificial intelligence is a key technology for self-driving vehicles. It is used for decision-making, sensing, predictive modeling and other tasks. But how vulnerable are these AI systems to an attack?

A new study has found that intelligence, in the form of general cognitive abilities such as perception, thinking and remembering, is more important than hitherto thought at predicting a person's ability to complete common tasks with a PC. The study was published in the International Journal of Human-Computer Studies in August 2024.

Researchers at the University of Toronto have found that using virtual and augmented reality (VR and AR) can temporarily change the way people perceive and interact with the real world—with potential implications for the growing number of industries that use these technologies for training purposes.

在过去的二十年里，城市基础设施的技术飞跃推动了网约车和货物配送等服务业的便利性和产业的爆炸式增长。在过去的二十年里，城市基础设施的技术飞跃推动了网约车和货物配送等服务业的便利性和产业的爆炸式增长。

A team of Alberta Machine Intelligence Institute (Amii) researchers has revealed more about a mysterious problem in machine learning—a discovery that might be a major step towards building advanced AI that can function effectively in the real world.

到 2050 年，光伏发电预计将满足瑞士 40% 以上的电力需求。但太阳能并不总是在需要时可用：夏季太阳能太多，而冬季太阳能太少，此时阳光照射较少，热泵也无法使用。全速奔跑。根据瑞士联邦政府的能源战略，瑞士希望通过进口、风能和水力发电以及高山太阳能发电厂和燃气发电厂的结合来缩小冬季电力缺口。

Reasoning, the process through which human beings mentally process information to draw specific conclusions or solve problems, can be divided into two main categories. The first type of reasoning, known as deductive reasoning, entails starting from a general rule or premise and then using this rule to draw conclusions about specific cases.

乍一看，视错觉、量子力学和神经网络似乎是完全不相关的主题。然而，在 APL 机器学习上发表的新研究中，我使用了一种称为“量子隧道”的现象来设计一个神经网络，它可以像人类一样“看到”视错觉。

A team of engineers at Huazhong University of Science and Technology in China has designed, built and independently tested an all-perovskite tandem solar cell with record efficiency. Their paper is published in the journal Nature Communications.

Scientists say they have developed a structure that can absorb and reduce vibrations of engineering and mechanical gadgets more effectively than conventional systems hitherto used to contain the trembling of machines and devices across various industries.

Solar cells based on perovskites, a versatile class of materials with promising optoelectronic properties, are gradually making their way toward commercialization. While these solar cells can have notable advantages over existing solar cell designs, including higher power conversion efficiencies and lower fabrication costs, their performance has been found to be significantly impaired in reverse bias conditions.

Taking inspiration from nature, researchers from Princeton Engineering have improved crack resistance in concrete components by coupling architected designs with additive manufacturing processes and industrial robots that can precisely control materials deposition.

Most urban transit systems have a brief window of time in the wee hours of the morning to perform maintenance work without disrupting passenger service.

南非正处于能源转型的关键时刻：努力实现经济脱碳（摆脱煤炭）并确保每个人都能获得可靠且负担得起的能源。可再生能源的储存对于这一转变非常重要。太阳能和风能并不是一直可用的。为了保持国家电网稳定，可再生能源必须储存在某个地方并可靠地供应。

Rice University researchers have developed a smart material that adjusts its transparency with changes in temperature, outperforming similar materials in terms of durability, transparency and responsiveness. The new polymer blend could significantly enhance energy efficiency for indoor space cooling, according to a new study published in Joule.