Abstract: This paper is concerned with the problem of policy evaluation with linear function approximation in discounted infinite horizon Markov decision processes ...

Greystone Capital’s 2025 letter: +2.8% net return, key stock-picking lessons, core holdings, and why Shift4 Payments is a new ...

US Dollar Japanese Yen, Gold Spot US Dollar, Silver Spot US Dollar, S&P 500. Read 's Market Analysis on Investing.com ...

There’s a saying that goes “Those who can’t do, teach.” But many could also claim: “Those who can’t do, critique.” Criticism, ...

The world today is marked by paradox. Never before has humanity possessed such extraordinary scientific knowledge, ...

I was on a long-distance bus when two young women sat behind my seat. As usual they started talking about their children. One ...

Despite priding himself on understanding how to thrive as a middle-aged cyclist, Phil Cavell was perilously unaware of the ...

Designed for demanding industry and research applications of scanning, measuring, imaging, and alignment. Ultra-precise linear motor stage, with 1µm straightness/flatness and 1nm absolute encoder, ...

Background: The relationship between lung function and depression in middle-aged and older adults remains poorly understood. To address this knowledge gap, we conducted cross-sectional and ...

For tasks requiring sub-micrometer precision — such as alignment, adjustment, or fine positioning — PI’s M-235, L-220, and M-230 series linear actuators deliver reliable, high-performance motion.

Word problems try and tell students a story about the math problem in front of them. They are a useful way to connect abstract numbers to concrete situations, so students can learn early on to apply ...

Working memory is like a mental chalkboard we use to store temporary information while executing other tasks. Scientists worked with more than 200 elementary students to test their working memory, ...