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50,000 illegal shark fins found inside fake car part boxes

Popular Science

The poached ingredients worth $1.3 million were seized in a nationwide hunt. More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results. Shark fins remain a prized delicacy despite conservation efforts and education. Breakthroughs, discoveries, and DIY tips sent six days a week. The United States Fish and Wildlife Service (FWS) recently exposed a major international smuggling operation orchestrated across at least three cities around the country.





I swapped my 1,000 desktop for a 300 mini PC and regret nothing

PCWorld

When you purchase through links in our articles, we may earn a small commission. You might not need as much computer as you think. I didn't expect it to change my entire computing setup. But here I am now, using the $319 Beelink SER5 Mini PC as my daily workhorse, powering an ultrawide 1440p 100Hz monitor and smoothly handling any productivity task I've thrown at it. This little computer has been so delightful to use that I've relegated my full-sized desktop tower PC to the basement television, where it's now serving exclusively as a gaming rig.


Roku's adding AI search and (hopefully) better recommendations

PCWorld

When you purchase through links in our articles, we may earn a small commission. There's also a big Bluetooth upgrade for Roku's newest streaming dongles. Roku is jumping onto the AI bandwagon with its next batch of software updates. In the months ahead, the company will add AI-powered voice search for its smart TVs and streaming players. While Roku's existing voice search can find specific programs, actors, or genres, the upgrade will allow for more conversational queries, such as "What's the Barbie movie about?" or "How scary is The Shining."


Robust Near-Optimal Nonlinear Target Enclosing Guidance

arXiv.org Artificial Intelligence

This paper proposes a nonlinear optimal guidance law that enables a pursuer to enclose a target within arbitrary geometric patterns, which extends beyond conventional circular encirclement. The design operates using only relative state measurements and formulates a target enclosing guidance law in which the vehicle's lateral acceleration serves as the steering control, making it well-suited for aerial vehicles with turning constraints. Our approach generalizes and extends existing guidance strategies that are limited to target encirclement and provides a degree of optimality. At the same time, the exact information of the target's maneuver is unnecessary during the design. The guidance law is developed within the framework of a state-dependent Riccati equation (SDRE), thereby providing a systematic way to handle nonlinear dynamics through a pseudo-linear representation to design locally optimal feedback guidance commands through state-dependent weighting matrices. While SDRE ensures near-optimal performance in the absence of strong disturbances, we further augment the design to incorporate an integral sliding mode manifold to compensate when disturbances push the system away from the nominal trajectory, and demonstrate that the design provides flexibility in the sense that the (possibly time-varying) stand-off curvature could also be treated as unknown. Simulations demonstrate the efficacy of the proposed approach.




Understanding Gradient Clipping in Private SGD: A Geometric Perspective

Neural Information Processing Systems

Deep learning models are increasingly popular in many machine learning applications where the training data may contain sensitive information. To provide formal and rigorous privacy guarantee, many learning systems now incorporate differential privacy by training their models with (differentially) private SGD .