4 papers
NIAC project report: Solar system-scale VLBI to dramatically improve cosmological distance measurements
Matthew McQuinn, Miguel Morales, Casey McGrath +7
We investigate the feasibility and scientific potential of the Cosmic Positioning System (CPS), a space mission concept enabling purely geometric distance measurements to sources a…
Dynamical Heating from Dark Compact Objects and Axion Minihalos: Implications for the 21-cm Signal
Badal Bhalla, Aurora Ireland, Hongwan Liu +2
The temperature of baryons at the end of the cosmic dark ages can be inferred from observations of the 21-cm hyperfine transition in neutral hydrogen. Any energy injection from the…
SFusion: Energy and Coding Fusion for Ultra-Robust Low-SNR LoRa Networks
Weiwei Chen, Huaxuan Xiao, Jiefeng Zhang +4
LoRa has become a cornerstone for city-wide IoT applications due to its long-range, low-power communication. It achieves extended transmission by spreading symbols over multiple sa…
Lassoed Boosting and Linear Prediction in the Equities Market
Xiao Huang
We consider a two-stage estimation method for linear regression. First, it uses the lasso in Tibshirani (1996) to screen variables and, second, re-estimates the coefficients using…