A spacewalk, often called extra-vehicular activity in space industry parlance, refers to any activity an astronaut undertakes outside of a space station or spacecraft. The upcoming spacewalk is the ...

Abstract: This paper presents a two-dimensional (2D) wide-angle scanning phased array based on a pattern reconfigurable two-element subarray. The two-element subarray design method enables flexible 1D ...

A multi-institute team led by Professors Ling Qiu, Baofu Ding and Hui-Ming Cheng has unveiled a two-dimensional titanium-dioxide sunscreen platform that erases the century-old trade-off between safety ...

With the incessant down-scaling of electronics, traditional semiconductors like Si are encountered with insurmountable hurdles to maintain performance increase without bringing about additional issues ...

Researchers from the University of Hong Kong studying the structure of electrons in 2D materials have predicted new types of phase transitions that have yet to be seen in experiments Illustration of ...

Abstract: Two-dimensional (2-D) array sets with good 2-D correlation properties have received considerable attention in wireless communication systems. This paper focuses on 2-D Z-complementary array ...

A Thai woman somehow survived a terrifying encounter with a huge python after the 16-foot snake wrapped itself around her waist as she was doing dishes — and then squeezed her tightly for two hours.

Arrom Arunroj was cleaning the dishes at her home in Thailand when she was bitten by what she first assumed was a cockroach. But as she looked down, she realized that she had been attacked not by an ...