State Key Laboratory of Heavy Ion Science and Technology, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China School of Materials & Energy, Lanzhou University, ...

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 ...

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# Given an array of integers arr, return the number of subarrays with an odd sum. # Since the answer can be very large, return it modulo 109 + 7.

Avista has been granted a patent for a device with a modem and dual-polarized sub-arrays that generate a collective beamwidth larger than individual beamwidths. This innovation enhances communication ...

In Java, arrays are useful data structures that store elements of the same data type sequentially in memory. Frequently, developers need to determine the size of an array for various reasons like ...

Abstract: This paper presents an antenna array which is based on a novel sub-array architecture. Each sub-array is a linear array of open-ended waveguides. The central element of the sub-array is ...

Abstract: This paper describes the design and realization of a Massive MIMO array antenna which incorporates 16 filtering sub-arrays (i.e., array of 1-by-2 elements). The sub-arrays operates at 3.55 ...