Abstract: This paper investigates a grant-free non-orthogonal multiple access (GF-NOMA ... Both schemes utilize a short common pilot and the eigenvalues of the sample covariance matrix of the received ...

We found that these Thbs4-positive astrocytes modulate the dense extracellular matrix at the lesion border by both synthesizing and degrading hyaluronan. We also show that while the accumulation of ...

In a dark coincidence, the researchers point to California's current catastrophe as a timely example of their recently published findings. "In that publication, fairly incredibly, we use the example ...

NASA's beleaguered Mars Sample Return program currently faces extreme costs of up to $11 billion and a timeline that could reach 2040. The year 2025 isn't even a week old and NASA is already ...

The goal of the Mars Sample Return Program, which is being planned jointly with the European Space Agency (ESA), is to retrieve samples of rock, gas and loose surface material that were collected ...