Teaching General Problem-Solving Skills Is Not a Substitute for Teaching Math [pdf]
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First anode-free sodium solid-state battery
UChicago Professor Shirley Meng’s Laboratory for Energy Storage and Conversion has developed the world’s first anode-free sodium solid-state battery, marking a significant advancement in creating affordable, environmentally friendly, and fast-charging batteries. This innovation uses abundant sodium instead of lithium and a novel aluminum powder current collector, addressing key issues in battery efficiency and sustainability. The breakthrough, detailed in a paper published in Nature Energy, paves the way for scaling up battery production to support the transition to renewable energy sources.
He might have been the first jazz star
Ford Dabney, an African American composer born in 1883, missed becoming a jazz star because jazz emerged after his prime, despite his significant contributions to ragtime and early jazz-influenced recordings. Dabney\'s career was marked by unfortunate timing and wrong bets, including a period in Haiti and involvement in now-obscure vaudeville and minstrel conventions. Recently, his music has resurfaced through a reissue that may finally secure his rightful place in American music history.
Properly testing concurrent data structures
The article discusses methods for thoroughly testing concurrent data structures in Rust, focusing on the use of property-based testing (PBT) and a toy implementation inspired by the loom library to highlight non-deterministic bugs. A detailed example of a buggy concurrent counter is provided, along with the development of a managed thread API to control and minimize thread interleavings, enabling deterministic and reproducible bug identification. The author demonstrates how this approach can find and minimize concurrency issues effectively, emphasizing its potential over traditional testing methods.
Writing GUI applications on the Raspberry Pi without a desktop environment (2019)
The article details how the author set up a lightweight graphical application on a Raspberry Pi without a desktop environment, utilizing direct framebuffer access and the Raylib library for rendering. It discusses configuring framebuffers, mirroring graphics to different displays, and calibrating a touchscreen for input. The author emphasizes the benefits of using Raylib for its multiple platform support and hardware acceleration, while also addressing the necessity of handling permissions and optimizing CPU usage.
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