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A checking account is a basic financial tool that allows users to safely make purchases, pay bills, withdraw cash and deposit funds. But maintaining one can be expensive: In 2024, Americans paid ...

Abstract: For measuring complex relative permittivity of more than 300 GHz in the THz region, time-domain spectroscopy (TDS) is usually used. On the other hand, a free-space method using a vector ...

Abstract: In this letter, we propose an Acceleration Measurement-Free Dissipative Disturbance Observer (AFDDO) for robotic manipulators, designed to estimate external disturbances robustly without ...

Can you chip in? As an independent nonprofit, the Internet Archive is fighting for universal access to quality information. We build and maintain all our own systems, but we don’t charge for access, ...

SolidGeo is the first large-scale benchmark specifically designed to evaluate the performance of MLLMs on mathematical reasoning tasks in solid geometry. SolidGeo consists of 3,113 real-world K–12 and ...

Thank you so much for helping us close out our 2025 fundraiser. With your support, we'll accomplish even more in 2026. Have a wonderful New Year, and enjoy the archive! By submitting, you agree to ...

Do you dream of seeing the world but don’t have a fat travel fund to do it? Today, there are more opportunities than ever to travel the world on the cheap — or even for free. My wife and I visit an ...

Thinking about numbers using frames of 10 can be a helpful way to learn basic number facts. The four games that can be played with this applet help to develop counting and addition skills. (This ...