Математическое моделирование помогло наладить производство российских ультразвуковых ножей, необходимых для резки и раскроя сотовых панелей.
Панели из алюминия и кевлара с сотовым наполнением используют при строительстве спутников и космических кораблей. Они обладают высокой прочностью при низком весе, но придать им заданную форму можно только специальным инструментом — ультразвуковым ножом.
Специалисты ЛЭТИ разработали метод проектирования этих ножей на основе математического описания их геометрии и резонанса. Эксперимент подтвердил правильность расчётов: ультразвуковые ножи, сделанные по новой технологии, уже успешно используются на производстве.
Математическое моделирование помогло наладить производство российских ультразвуковых ножей, необходимых для резки и раскроя сотовых панелей.
Панели из алюминия и кевлара с сотовым наполнением используют при строительстве спутников и космических кораблей. Они обладают высокой прочностью при низком весе, но придать им заданную форму можно только специальным инструментом — ультразвуковым ножом.
Специалисты ЛЭТИ разработали метод проектирования этих ножей на основе математического описания их геометрии и резонанса. Эксперимент подтвердил правильность расчётов: ультразвуковые ножи, сделанные по новой технологии, уже успешно используются на производстве.
If you initiate a Secret Chat, however, then these communications are end-to-end encrypted and are tied to the device you are using. That means it’s less convenient to access them across multiple platforms, but you are at far less risk of snooping. Back in the day, Secret Chats received some praise from the EFF, but the fact that its standard system isn’t as secure earned it some criticism. If you’re looking for something that is considered more reliable by privacy advocates, then Signal is the EFF’s preferred platform, although that too is not without some caveats. Official government accounts have also spread fake fact checks. An official Twitter account for the Russia diplomatic mission in Geneva shared a fake debunking video claiming without evidence that "Western and Ukrainian media are creating thousands of fake news on Russia every day." The video, which has amassed almost 30,000 views, offered a "how-to" spot misinformation. And while money initially moved into stocks in the morning, capital moved out of safe-haven assets. The price of the 10-year Treasury note fell Friday, sending its yield up to 2% from a March closing low of 1.73%. Either way, Durov says that he withdrew his resignation but that he was ousted from his company anyway. Subsequently, control of the company was reportedly handed to oligarchs Alisher Usmanov and Igor Sechin, both allegedly close associates of Russian leader Vladimir Putin. The company maintains that it cannot act against individual or group chats, which are “private amongst their participants,” but it will respond to requests in relation to sticker sets, channels and bots which are publicly available. During the invasion of Ukraine, Pavel Durov has wrestled with this issue a lot more prominently than he has before. Channels like Donbass Insider and Bellum Acta, as reported by Foreign Policy, started pumping out pro-Russian propaganda as the invasion began. So much so that the Ukrainian National Security and Defense Council issued a statement labeling which accounts are Russian-backed. Ukrainian officials, in potential violation of the Geneva Convention, have shared imagery of dead and captured Russian soldiers on the platform.
from hk
