Scientists and engineers, inspired by bees and wasps, have developed a swarm of drones equipped with 3D printers capable of constructing complete buildings. These drones are specially designed to print a cement-like material with sufficient precision to create towering structures. When these printing drones work in unison, they can complete tasks more rapidly. The research … Read more
Editor’s Note The development of talent is a major national issue. General Secretary Xi Jinping emphasized at the Central Talent Work Conference the need to deeply implement the strategy of strengthening the country with talent in the new era, accelerating the construction of a world-class talent center and innovation highland, and outlining a grand blueprint … Read more
On the morning of April 26, the ninth meeting of the Standing Committee of the 14th National People’s Congress concluded at the Great Hall of the People in Beijing. After the closing meeting, the Standing Committee of the 14th National People’s Congress held a special lecture, presided over by Chairman Zhao Leji. Academician Sun Ninghui … Read more
Zhan Zehui, Huo Liming, Yao Jiajing, Dai Shasha * This article is a research result of the Youth Pearl River Scholar Program of Guangdong Province (Yue Teacher Letter [2017] No. 79), the Major Project of Basic Research of the Guangdong Provincial Department of Education, and the Major Project of Applied Research “Design and Application of … Read more
Peng Liangguang, Lin Jinzhao, Pang Yu, Li Zhangyong, Li Guoquan, Zhou Qianneng (Chongqing University of Posts and Telecommunications, Key Laboratory of Optoelectronic Information Sensing and Transmission Technology, Chongqing 400065) Abstract: To detect the electrocardiogram (ECG) signals of high-risk occupational groups such as police and firefighters, a wearable wireless ECG detection system is designed using a … Read more
(Source: Yole) The mobile phone market rebounded in 2021 following the decline caused by the Covid-19 pandemic in 2020. However, due to chip supply shortages, it has not yet reached pre-Covid-19 levels. In 2022, the global macroeconomic downturn and geopolitical tensions such as the Russia-Ukraine war led to a sluggish market and high inflation, severely … Read more
Introduction ²Ant Column Ant Financial Launches “Wealth Account” and Opens AI Capabilities for the First Time Ant Financial Further Opens Huabei Installment Capabilities, Covering Approximately 4 Million Merchants Sesame Credit 700 Points Japan 5-Year Visa Service Suspended ²Policy Updates Five Departments Release “Financial Industry Standardization System Construction Development Plan (2016-2020)” Provincial Price Bureau Issues Notice … Read more
Intel officially launched the Core Ultra 200V series yesterday, which is the Lunar Lake processor aimed at thin and light laptops, and it will be shipped by the end of this month. In the increasingly fierce competition in the PC processor market, does Lunar Lake have any advantages?The smoke of the PC processor industry has … Read more
Source: This article is from Wang Fuchang’s blog on ScienceNet, Author: Wang Fuchang. Fitting measurement data has wide applications in scientific research and engineering. Below are several commonly used fitting methods and how to implement them in the MATLAB environment. In MATLAB, there are commands for fitting such as polyfit, lsqcurvefit, nlinfit, and the curve … Read more
1. Choose the appropriate megger: If the rated operating voltage of the motor being tested is 380 volts, then we can select a 500V megger. 2. Place the megger flat, perform a short circuit test by shorting the two probes, and if the pointer approaches 0 while cranking the handle, it indicates good condition. 3. … Read more