全球移动通信系统-铁路(GSM-R)是一种经过验证的铁路列车地面通信系统，已广泛使用超过20年。然而，其4MHz的带宽限制了其服务能力，使其不适合大型火车站、枢纽和铁路交汇处。更糟糕的是，同频和邻频干扰使网络规划更加复杂。预计到2030年左右，设备供 ...

Welcome to the Department of History of Art and Architecture, located in the heart of Dublin, surrounded by the national and city museums and galleries, on a campus renowned for its outstanding ...

Support for measurement units in R vectors, matrices and arrays: automatic propagation, conversion, derivation and simplification of units; raising errors in case of unit incompatibility. Compatible ...

The OnePlus 13 made its global debut today, and brought along the more affordable OnePlus 13R. Make sure you don't miss our in-depth review of the former and stay tuned for our review of the ...

Is there a point anymore in explaining what makes the r-word offensive? Everybody knows why it’s ugly and vicious. Today’s trolls use it because it crosses a contested boundary, as a ...

Last year Huawei stunned the world with the Mate XT, a "tri-fold" smartphone (it folds twice, not three times, by the way). And ever since its introduction we've been wondering when another ...