I'm not even sure what are potent closed source DBMS today. Oracle? Snowflake?
News on China's scientific and technological development.
- Thread starter Quickie
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this guys too, they are also in the process of developing e-beam lithography tools according to a patent I read from them.
you know, this is the basic problem of these so called experts, they always been outdated. largely unaware of China's recent development and progress. China also conquered heavy duty gas turbines. E and F fully indigenous. H is in final phase of development.
Breaking - For the first time in China, an interventional brain-computer interface has been implemented in the sheep brain.
On June 25, the first domestic interventional brain-computer interface independently developed by China successfully completed animal testing in Beijing. The interventional brain-computer interface of this experiment was led by the research team of Duan Feng, a professor at the School of Artificial Intelligence of Nankai University, and jointly developed with Shanghai Xinwei Medical Technology Co., Ltd.
On June 25, the first domestic interventional brain-computer interface independently developed by China successfully completed animal testing in Beijing. The interventional brain-computer interface of this experiment was led by the research team of Duan Feng, a professor at the School of Artificial Intelligence of Nankai University, and jointly developed with Shanghai Xinwei Medical Technology Co., Ltd.
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It's not even outdated... They just outright don't have the ability to learn this stuff nor the interest. This is because it would otherwise portray China in a 0.1% positive light and they never do that unless forced to by circumstances and then it's but at what cost.
Kyky has been making electron microscopes since the 1958. Literal Cold War era state owned enterprise. They had 60+ years to learn about it. They refused to do so. But that is their problem not China's.
C
China only approved gene editing within a species (modifications of its natural genes). Still opposes mixing of genes of different species ( introduction of foreign genes from completely different species).
- Completion of all test flights by 2025 will allow the development of a passenger aircraft that can travel more than 6,000km at Mach 6: researchers
- Challenges for the project include devising a way to slow and land during an emergency as well as commercial viability
The Nanqiang No 1 unmanned aircraft weighs just 500kg (1,100 pounds) but it can reach five times the speed of sound, or faster, according to the team.
The researchers have squeezed into its small body three different types of power systems, a design some experts thought would never work.
The drone can take off and land on a runway like an ordinary plane.
The completion of all test flights by 2025 will pave the way for the development of a full-sized hypersonic aircraft that can transport 10 passengers more than 6,000km (3,700 miles) at Mach 6, according to the research team.
“The breakthrough of this technology will greatly shorten the round-the-world flight time,” lead project scientist Yin Zeyong wrote in a paper published last week in Acta Aeronautica et Astronautica Sinica, a peer-reviewed journal run by the China Society of Aeronautics and Astronautics.
“It can change human civilisation,” said Yin, director of science and technology with the Aero Engine Corporation of China.
Hypersonic flight technology could cut global travel time to anywhere to under two hours, according to Yin’s team.
But the technology and its application has so far remained mostly in the hands of the military. A hypersonic missile, for instance, can hit a high-value target before most missile defence systems can react.
Many countries are engaged in a heated race on hypersonic technology. China, now in a leading position, plans to build a small fleet of manned hypersonic aircraft that can arrive anywhere on the planet within an hour or two by 2035.
Nearly all Chinese hypersonic aircraft programmes remain classified. The paper by Yin and his collaborators at Xiamen University in southeastern Fujian province offered a rare peek into the technical route and progress in this sensitive sector.
Nanqiang No 1 used a state-of-the-art combined cycle engine design known as multi-ducted twin-turbines ejector-ramjet/scramjet, or MUTTER.
The unique power system includes a pair of turbine engines, a small rocket and two air-breathing ramjet or scramjet engines.
This scheme is more complex than most hypersonic flight vehicles proposed before. Some experts opposed the idea because adding the rocket, for instance, could make the aircraft too heavy for a long distance flight.
Yin’s team stuck to the MUTTER design, with a number of innovations to improve flight efficiency, such as forcing three different types of engines to share a single air inlet.
While it had not been done before, computer modelling, ground testing and early test flights suggested the idea worked.
When taking off from a runway, the two turbines could provide a high thrust at speed below Mach 2, according to the researchers. The rocket engine, although relatively small, would accelerate the aircraft to Mach 4. Then the sub-ramjet above and the main-ramjet below the aircraft would ignite and take the plane to a cruising speed at Mach 6.
According to a report by Science and Technology Daily in 2020, during the first stage of the test flights, which started in 2019, Yin’s team kept the plane below the speed of sound.
By the time they wrote the paper, the work had moved to the second stage, pushing the speed to Mach 4, according to the researchers.
The construction of a full-sized passenger plane with a total weight reaching 72 tonnes would likely begin before the end of the six-year programme.
The project faces many technical challenges.
It is not clear whether the small rocket engine can be reused after being put to work in an extreme environment.
A hypersonic airliner would carry 10 adult passengers, making up only about 2 per cent of its weight. But Yin said the technology must be more efficient if it is to be commercially attractive.
The researchers must also devise an effective plan to slow down and land the aircraft quickly in an emergency.
“China wants to use a dozen or two dozen years to complete what others have done in over 100 years,” said Yin, then 73 years old, in an interview with China Youth Daily in 2018.
“We have to make up for lots of missed lessons.”
picture - Air inlet and exhaust of the MUTTER hypersonic engine design that uses three different types of power systems
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