Abstract: In this paper, a low-cost K-band phased array antenna is designed for LEO satellite communication. The design reduces the number of T/R components by allowing multiple elements to share a ...

When you pick up this cordless circular saw for the first time, you will quickly notice how compact it is, as it only weighs about 8 pounds. But make no mistake about it: It also packs plenty of power ...

Sam Altman, the chief executive of OpenAI, says that technological revolutions are driven by more than just technology. They are also driven, he argues, by new ways of paying for them. “There is ...

A reliable circular saw is essential for everything from framing and decking to DIY home projects. When it’s cordless, powerful, and built by a trusted brand, it’s even better. It doesn’t matter if ...

Letter of Intent: Circular Health Limited to Enhance ECG Smart Ring with AI-Powered Signal Clarity with multi‑year, per‑user SaaS license targeting commercial launch by September 2025. Global growth ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

给定一个长度为 n 的环形整数数组 nums ，返回 nums 的非空 子数组 的最大可能和 。 环形数组 意味着数组的末端将会与开头相连呈环状。形式上， nums[i] 的下一个元素是 nums[(i + 1) % n] ， nums[i] 的前一个元素是 nums[(i - 1 + n) % n] 。 子数组 最多只能包含固定 ...

Abstract: A novel method of direction-of-arrival (DOA) estimation based on subarray beamforming for uniform circular arrays is proposed. In this method, the beamform manifold of uniform circular ...