Cradle of the New Generation Aircraft! JF-22 Ultra High Speed Wind Tunnel has passed acceptance and can reproduce flight conditions at 30 times sound speed
In the development process of various types of aircraft, a large number of simulation flight experiments are required, but it is impossible to actually frequently test fly the aircraft in the sky. Therefore, wind tunnels have emerged, which is equivalent to artificially building a "flying sky" on the ground and is an essential large-scale aerodynamic experimental device for developing aircraft...
New generation Java garbage collection tool: ZGC
JavaZGCZGC ZGCThe Z Garbage CollectorTBZGC JDK 11 JDK 15 Production ReadyZGC"Z"ZZGC ZFSZFSZFS Zettabyte File SystemJeff Bonwick Oracle ZGCZGC2018Oracle ZGC TB GC 10ms G1 15%202211Oracle ZGClive-set root-set TB 8MB-16TB ZGCZGC 10ms 2018 ZGCConcurrentTracing: CompactingSingle generation: Region-basedRegionNUMA-awareNUMANon-Uniform Memory AccessLoad barriersColored pointers2022 ZGCConcurrentRegion-basedRegionCompactingNUMA-awareNUMANon-Uniform Memory AccessUsing colored pointersUsing load barriers 2018 2022 ZGC Single generation G1G1 Region-based RegionRegionZGC G1ZGC Region-basedRegion-basedZGC G1ZGC Region :Small Region Region 2M 256KMedium Region Region 32M 256K 4MLarge Region Region: 2M 4MBCompactingCompacting ZGC CMSG1"-"NUMANUMANon-Uniform Memory Access CPU CPU CPUUniform Memory Access UMA CPU CPUNUMAUMANUMA ZGC NUMAColored pointersColored pointersJVMGC CMSG1 GC ZGC GC 64 JDK zGlobals_x86.cpp ZGC 31[0 ~ 41] 42-bits 4TB Java[42-45] 4-bits Metadata Bits Marked0Marked1RemappedFinalizable [46-63] 18-bits02[0 ~ 42] 43-bits 8TB Java[43-46] 4-bits Metadata Bits Marked0Marked1RemappedFinalizable [47-63] 17-bits03[0 ~ 43] 44-bits 16TB Java[44-47] 4-bits Metadata Bits Marked0Marked1RemappedFinalizable [48-63] 16-bits0 3 4-bits Marked0Marked1RemappedFinalizable 4Marked01-bitMarked11-bitRemapped1-bitFinalizable1-bitfinalizer Marked0Marked1RemappedZGC Marked0Marked1 RemappedZGC""GCGCLoad barriersLoad barriers JIT just-in-time compilation JVMjavaString n = person...
The biggest drawback of past generations of iPhones
...
Human tooth regeneration is not a dream? The world's first "tooth regeneration" drug will undergo clinical trials
For humans, teeth are a very precious organ. In nature, fierce animals like big sharks constantly change their teeth throughout their lives, while humans only have two opportunities to grow teeth in their lifetime, one is deciduous and the other is permanent...
Huang Qifan: The new generation of "five major pieces" will become the main battlefield of global industrial competition!
Looking back at economic history, each era's trend has given rise to several durable consumer goods worldwide. From bicycles, sewing machines, radios, to televisions, refrigerators, washing machines, to computers, LCD TVs, mobile phones, etc...
"Nepal and AI welcome the future together" | Seventy five generations of Confucius splashed ink on the scene to wish the World Internet Conference digital civilization Nishan dialogue a complete success
On the morning of June 19, when the delegation visited the Confucius Mansion, Kong Xiangsheng, the grandson of the seventy-five generation of Confucius, splashed ink on the spot and wrote two calligraphy works, "World Internet Conference" and "Nishan Dialogue on Digital Civilization"."First of all, I wish the World Internet Conference Nishan Dialogue on Digital Civilization a complete success...
Accelerating the Development of the New Generation of Artificial Intelligence (People's Current Review)
Understand questions and provide quick answers; Train your voice and cover classic songs; According to the description, create interesting paintings....
HTC Huang Zhaoying: The Metaverse is the Next Generation of Internet B-end Applications Starting to Grow
On May 30th, at the recently held Zhongguancun Forum, HTC Global Vice President Huang Zhaoying, Global Sales and Marketing Director, stated: The metaverse is the next generation of the internet, which will bring more applications and generate greater economic value than the current internet. We must use technologies such as AR, VR, 5G, artificial intelligence, and blockchain as the underlying foundation to construct a metaverse ecosystem that includes software, hardware, content, and platforms, further enhancing users' immersive experience, and promoting industrial upgrading in various industries in the metaverseAt this exhibition, HTC showcased the latest XR all-in-one machine - the VIVEXR Elite Set, which features a lightweight and compact body, flexible and variable forms, rich MR functions, diverse content ecology, and the latest standards such as Wi Fi 6E, allowing consumers to embrace the XR experience in multiple settings such as learning, work, and entertainment...
Focusing on major application directions and accelerating the development of third-generation semiconductors
Recently, at the 2023 Zhongguancun Forum "Beijing (International) Third Generation Semiconductor Innovation and Development Forum", Xiang Libin, a member of the Party Group and Vice Minister of the Ministry of Science and Technology, stated that third-generation semiconductors represented by silicon carbide and gallium nitride have excellent performance and have a huge market in fields such as new energy vehicles, information communication, and smart grids.Building an Industrial EcologyXiang Libin stated that the "13th Five Year Plan" period has basically solved the "availability" problem of China's third-generation semiconductor products and related equipment, and the "14th Five Year Plan" period will focus on solving the problems of "usability, usability" and sustainable innovation ability...