If you’re looking for the Connections answer for Friday, January 2, 2026, read on—I’ll share some clues, tips, and strategies, and finally the solutions to all four categories.

Abstract: In this paper, we apply the recently developed generalized parameter estimation-based observer design technique for state-affine systems to the practically important case of linear ...

Over the last decade, the growing disparity between declining professional fee CPT reimbursements and hospital-based ...

Ask a beginner retail investor what they think best predicts whether a fund will outperform, and the answers tend to vary. Some point to the long-running dominance of U.S.-focused funds as evidence ...

Classic '80s Toyotas include the 4Runner, the Celica Supra, the classic Pickup (often referred to as the Hilux), and the iconic AE86 Sprinter Trueno.

Learn what active risk is and how to calculate it. Understand the methods to evaluate active risk in portfolios and explore examples of funds outperforming benchmarks.

CD rates are still competitive despite recent drops, but where they head in 2026 will depend on numerous factors.

Discover how reference rates like the SOFR and prime rate serve as benchmarks for setting interest rates, and explore their impact on mortgages and financial contracts.

Recently, there has been a surge in LLM evaluation research to comprehend LLM capabilities and limitations. However, much of this research has been confined to English, leaving LLM building and ...

Abstract: A novel disturbance rejection solution for a benchmark mass-spring-damper (MSD) system is presented. The proposed design, adaptive mixing control (AMC,) is a deterministic multiple model ...