资讯

This is the reason why we can’t see what happened at the very beginning of the universe. There is no free path for light to get from the Big Bang to our telescopes. We simply cannot see beyond the ...
On July 24, 2025, President Trump signed an executive order aimed at reducing homelessness and crime on U.S. streets. How ...
Lunar resources, military advantage and scientific discoveries are at stake as America retreats from its admirable legacy of lunar exploration.
Software, like any strategic asset, doesn’t exist to be finished. It exists to perform—and to keep performing in alignment ...
The film, which is based on the novel of the same name by Panos Karnezis, also stars Vic Carmen Sonne and Joe Cole.
Researchers have developed a novel laser-assisted synthesis method to fabricate platinum (Pt) colloidosomes (Cs) with ...
AbbVie seeks FDA approval for a groundbreaking oral treatment combining venetoclax and acalabrutinib, promising a new era in ...
In this article, we focus on the issue of adaptive fuzzy finite-time tracking control for a class of uncertain fractional-order nonlinear systems with external disturbance. A new finite-time ...
When it comes to ultra-scarce parallels of modern NBA legends, the 2023 Select LeBron James Black Finite 1/1 PSA 10 is certainly up there with some of the rarest cards of the biggest names and ...
Does the human brain have a set, finite storage capacity, or is this where the metaphor starts to break down? How many memories are too many?
This paper investigates a finite-time prescribed performance adaptive control (FTPPAC) scheme for a class of full-state dependent switched uncertain nonlinear systems in the non-strict feedback form.