Большинство мобильных роботов используют колёса, которые хорошо работают на ровных поверхностях, но бесполезны на неровной местности. Пассивно трансформируемое колесо PaTS-Wheel способно адаптироваться к препятствиям, меняя свою геометрию. Напечатанный механизм сочетает энергоэффективность и плавность хода с возможностью преодоления препятствий без использования датчиков или сложных механизмов.
Большинство мобильных роботов используют колёса, которые хорошо работают на ровных поверхностях, но бесполезны на неровной местности. Пассивно трансформируемое колесо PaTS-Wheel способно адаптироваться к препятствиям, меняя свою геометрию. Напечатанный механизм сочетает энергоэффективность и плавность хода с возможностью преодоления препятствий без использования датчиков или сложных механизмов.
"The result is on this photo: fiery 'greetings' to the invaders," the Security Service of Ukraine wrote alongside a photo showing several military vehicles among plumes of black smoke. "This time we received the coordinates of enemy vehicles marked 'V' in Kyiv region," it added. 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. As the war in Ukraine rages, the messaging app Telegram has emerged as the go-to place for unfiltered live war updates for both Ukrainian refugees and increasingly isolated Russians alike. "There are a lot of things that Telegram could have been doing this whole time. And they know exactly what they are and they've chosen not to do them. That's why I don't trust them," she said.
from hk
